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Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb

Browse Source 
* 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: (31 commits)
  uwb: remove beacon cache entry after calling uwb_notify()
  uwb: remove unused include/linux/uwb/debug.h
  uwb: use print_hex_dump()
  uwb: use dev_dbg() for debug messages
  uwb: fix memory leak in uwb_rc_notif()
  wusb: fix oops when terminating a non-existant reservation
  uwb: fix oops when terminating an already terminated reservation
  uwb: improved MAS allocator and reservation conflict handling
  wusb: add debug files for ASL, PZL and DI to the whci-hcd driver
  uwb: fix oops in debug PAL's reservation callback
  uwb: clean up whci_wait_for() timeout error message
  wusb: whci-hcd shouldn't do ASL/PZL updates while channel is inactive
  uwb: remove unused beacon group join/leave events
  wlp: start/stop radio on network interface up/down
  uwb: add basic radio manager
  uwb: add pal parameter to new reservation callback
  uwb: fix races between events and neh timers
  uwb: don't unbind the radio controller driver when resetting
  uwb: per-radio controller event thread and beacon cache
  uwb: add commands to add/remove IEs to the debug interface
  ...
This commit is contained in:
Linus Torvalds 2009-01-02 10:31:04 -08:00
commit 80618fa83a
75 changed files with 3252 additions and 2837 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
Documentation/ABI/testing/sysfs-class-uwb_rc
View File

@ -32,14 +32,16 @@ Contact: linux-usb@vger.kernel.org
Description:
Write:
<channel> [<bpst offset>]
<channel>
to start beaconing on a specific channel, or stop
beaconing if <channel> is -1. Valid channels depends
on the radio controller's supported band groups.
to force a specific channel to be used when beaconing,
or, if <channel> is -1, to prohibit beaconing. If
<channel> is 0, then the default channel selection
algorithm will be used. Valid channels depends on the
radio controller's supported band groups.
<bpst offset> may be used to try and join a specific
beacon group if more than one was found during a scan.
Reading returns the currently active channel, or -1 if
the radio controller is not beaconing.
What: /sys/class/uwb_rc/uwbN/scan
Date: July 2008

9
Documentation/usb/wusb-cbaf
View File

@ -80,12 +80,6 @@ case $1 in
start)
for dev in ${2:-$hdevs}
do
uwb_rc=$(readlink -f $dev/uwb_rc)
if cat $uwb_rc/beacon | grep -q -- "-1"
then
echo 13 0 > $uwb_rc/beacon
echo I: started beaconing on ch 13 on $(basename $uwb_rc) >&2
fi
echo $host_CHID > $dev/wusb_chid
echo I: started host $(basename $dev) >&2
done
@ -95,9 +89,6 @@ case $1 in
do
echo 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > $dev/wusb_chid
echo I: stopped host $(basename $dev) >&2
uwb_rc=$(readlink -f $dev/uwb_rc)
echo -1 | cat > $uwb_rc/beacon
echo I: stopped beaconing on $(basename $uwb_rc) >&2
done
;;
set-chid)

159
drivers/usb/host/hwa-hc.c
View File

@ -54,7 +54,6 @@
* DWA).
*/
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/workqueue.h>
@ -63,16 +62,12 @@
#include "../wusbcore/wa-hc.h"
#include "../wusbcore/wusbhc.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
struct hwahc {
struct wusbhc wusbhc; /* has to be 1st */
struct wahc wa;
u8 buffer[16]; /* for misc usb transactions */
};
/**
/*
* FIXME should be wusbhc
*
* NOTE: we need to cache the Cluster ID because later...there is no
@ -126,7 +121,6 @@ static int hwahc_op_reset(struct usb_hcd *usb_hcd)
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
struct device *dev = &hwahc->wa.usb_iface->dev;
d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
mutex_lock(&wusbhc->mutex);
wa_nep_disarm(&hwahc->wa);
result = __wa_set_feature(&hwahc->wa, WA_RESET);
@ -134,7 +128,6 @@ static int hwahc_op_reset(struct usb_hcd *usb_hcd)
dev_err(dev, "error commanding HC to reset: %d\n", result);
goto error_unlock;
}
d_printf(3, dev, "reset: waiting for device to change state\n");
result = __wa_wait_status(&hwahc->wa, WA_STATUS_RESETTING, 0);
if (result < 0) {
dev_err(dev, "error waiting for HC to reset: %d\n", result);
@ -142,7 +135,6 @@ static int hwahc_op_reset(struct usb_hcd *usb_hcd)
}
error_unlock:
mutex_unlock(&wusbhc->mutex);
d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
return result;
}
@ -155,15 +147,9 @@ static int hwahc_op_start(struct usb_hcd *usb_hcd)
int result;
struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
struct device *dev = &hwahc->wa.usb_iface->dev;
/* Set up a Host Info WUSB Information Element */
d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
result = -ENOSPC;
mutex_lock(&wusbhc->mutex);
/* Start the numbering from the top so that the bottom
* range of the unauth addr space is used for devices,
* the top for HCs; use 0xfe - RC# */
addr = wusb_cluster_id_get();
if (addr == 0)
goto error_cluster_id_get;
@ -171,22 +157,14 @@ static int hwahc_op_start(struct usb_hcd *usb_hcd)
if (result < 0)
goto error_set_cluster_id;
result = wa_nep_arm(&hwahc->wa, GFP_KERNEL);
if (result < 0) {
dev_err(dev, "cannot listen to notifications: %d\n", result);
goto error_stop;
}
usb_hcd->uses_new_polling = 1;
usb_hcd->poll_rh = 1;
usb_hcd->state = HC_STATE_RUNNING;
result = 0;
out:
mutex_unlock(&wusbhc->mutex);
d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
return result;
error_stop:
__wa_stop(&hwahc->wa);
error_set_cluster_id:
wusb_cluster_id_put(wusbhc->cluster_id);
error_cluster_id_get:
@ -194,39 +172,6 @@ static int hwahc_op_start(struct usb_hcd *usb_hcd)
}
/*
* FIXME: break this function up
*/
static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc)
{
int result;
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
struct device *dev = &hwahc->wa.usb_iface->dev;
/* Set up a Host Info WUSB Information Element */
d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
result = -ENOSPC;
result = __wa_set_feature(&hwahc->wa, WA_ENABLE);
if (result < 0) {
dev_err(dev, "error commanding HC to start: %d\n", result);
goto error_stop;
}
result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE);
if (result < 0) {
dev_err(dev, "error waiting for HC to start: %d\n", result);
goto error_stop;
}
result = 0;
out:
d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
return result;
error_stop:
result = __wa_clear_feature(&hwahc->wa, WA_ENABLE);
goto out;
}
static int hwahc_op_suspend(struct usb_hcd *usb_hcd, pm_message_t msg)
{
struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
@ -246,18 +191,6 @@ static int hwahc_op_resume(struct usb_hcd *usb_hcd)
return -ENOSYS;
}
static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc)
{
int result;
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
struct device *dev = &hwahc->wa.usb_iface->dev;
d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
/* Nothing for now */
d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
return;
}
/*
* No need to abort pipes, as when this is called, all the children
* has been disconnected and that has done it [through
@ -266,21 +199,11 @@ static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc)
*/
static void hwahc_op_stop(struct usb_hcd *usb_hcd)
{
int result;
struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
struct wahc *wa = &hwahc->wa;
struct device *dev = &wa->usb_iface->dev;
d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
mutex_lock(&wusbhc->mutex);
wusbhc_stop(wusbhc);
wa_nep_disarm(&hwahc->wa);
result = __wa_stop(&hwahc->wa);
wusb_cluster_id_put(wusbhc->cluster_id);
mutex_unlock(&wusbhc->mutex);
d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
return;
}
static int hwahc_op_get_frame_number(struct usb_hcd *usb_hcd)
@ -325,6 +248,54 @@ static void hwahc_op_endpoint_disable(struct usb_hcd *usb_hcd,
rpipe_ep_disable(&hwahc->wa, ep);
}
static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc)
{
int result;
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
struct device *dev = &hwahc->wa.usb_iface->dev;
result = __wa_set_feature(&hwahc->wa, WA_ENABLE);
if (result < 0) {
dev_err(dev, "error commanding HC to start: %d\n", result);
goto error_stop;
}
result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE);
if (result < 0) {
dev_err(dev, "error waiting for HC to start: %d\n", result);
goto error_stop;
}
result = wa_nep_arm(&hwahc->wa, GFP_KERNEL);
if (result < 0) {
dev_err(dev, "cannot listen to notifications: %d\n", result);
goto error_stop;
}
return result;
error_stop:
__wa_clear_feature(&hwahc->wa, WA_ENABLE);
return result;
}
static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc, int delay)
{
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
struct wahc *wa = &hwahc->wa;
u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
int ret;
ret = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
WUSB_REQ_CHAN_STOP,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
delay * 1000,
iface_no,
NULL, 0, 1000 /* FIXME: arbitrary */);
if (ret == 0)
msleep(delay);
wa_nep_disarm(&hwahc->wa);
__wa_stop(&hwahc->wa);
}
/*
* Set the UWB MAS allocation for the WUSB cluster
*
@ -581,11 +552,11 @@ static int wa_fill_descr(struct wahc *wa)
itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
while (itr_size >= sizeof(*hdr)) {
hdr = (struct usb_descriptor_header *) itr;
d_printf(3, dev, "Extra device descriptor: "
"type %02x/%u bytes @ %zu (%zu left)\n",
hdr->bDescriptorType, hdr->bLength,
(itr - usb_dev->rawdescriptors[actconfig_idx]),
itr_size);
dev_dbg(dev, "Extra device descriptor: "
"type %02x/%u bytes @ %zu (%zu left)\n",
hdr->bDescriptorType, hdr->bLength,
(itr - usb_dev->rawdescriptors[actconfig_idx]),
itr_size);
if (hdr->bDescriptorType == USB_DT_WIRE_ADAPTER)
goto found;
itr += hdr->bLength;
@ -794,7 +765,6 @@ static void hwahc_destroy(struct hwahc *hwahc)
{
struct wusbhc *wusbhc = &hwahc->wusbhc;
d_fnstart(1, NULL, "(hwahc %p)\n", hwahc);
mutex_lock(&wusbhc->mutex);
__wa_destroy(&hwahc->wa);
wusbhc_destroy(&hwahc->wusbhc);
@ -804,7 +774,6 @@ static void hwahc_destroy(struct hwahc *hwahc)
usb_put_intf(hwahc->wa.usb_iface);
usb_put_dev(hwahc->wa.usb_dev);
mutex_unlock(&wusbhc->mutex);
d_fnend(1, NULL, "(hwahc %p) = void\n", hwahc);
}
static void hwahc_init(struct hwahc *hwahc)
@ -821,7 +790,6 @@ static int hwahc_probe(struct usb_interface *usb_iface,
struct hwahc *hwahc;
struct device *dev = &usb_iface->dev;
d_fnstart(4, dev, "(%p, %p)\n", usb_iface, id);
result = -ENOMEM;
usb_hcd = usb_create_hcd(&hwahc_hc_driver, &usb_iface->dev, "wusb-hwa");
if (usb_hcd == NULL) {
@ -848,7 +816,6 @@ static int hwahc_probe(struct usb_interface *usb_iface,
dev_err(dev, "Cannot setup phase B of WUSBHC: %d\n", result);
goto error_wusbhc_b_create;
}
d_fnend(4, dev, "(%p, %p) = 0\n", usb_iface, id);
return 0;
error_wusbhc_b_create:
@ -858,7 +825,6 @@ static int hwahc_probe(struct usb_interface *usb_iface,
error_hwahc_create:
usb_put_hcd(usb_hcd);
error_alloc:
d_fnend(4, dev, "(%p, %p) = %d\n", usb_iface, id, result);
return result;
}
@ -872,16 +838,12 @@ static void hwahc_disconnect(struct usb_interface *usb_iface)
wusbhc = usb_hcd_to_wusbhc(usb_hcd);
hwahc = container_of(wusbhc, struct hwahc, wusbhc);
d_fnstart(1, NULL, "(hwahc %p [usb_iface %p])\n", hwahc, usb_iface);
wusbhc_b_destroy(&hwahc->wusbhc);
usb_remove_hcd(usb_hcd);
hwahc_destroy(hwahc);
usb_put_hcd(usb_hcd);
d_fnend(1, NULL, "(hwahc %p [usb_iface %p]) = void\n", hwahc,
usb_iface);
}
/** USB device ID's that we handle */
static struct usb_device_id hwahc_id_table[] = {
/* FIXME: use class labels for this */
{ USB_INTERFACE_INFO(0xe0, 0x02, 0x01), },
@ -898,18 +860,7 @@ static struct usb_driver hwahc_driver = {
static int __init hwahc_driver_init(void)
{
int result;
result = usb_register(&hwahc_driver);
if (result < 0) {
printk(KERN_ERR "WA-CDS: Cannot register USB driver: %d\n",
result);
goto error_usb_register;
}
return 0;
error_usb_register:
return result;
return usb_register(&hwahc_driver);
}
module_init(hwahc_driver_init);

1
drivers/usb/host/whci/Kbuild
View File

@ -2,6 +2,7 @@ obj-$(CONFIG_USB_WHCI_HCD) += whci-hcd.o
whci-hcd-y := \
asl.o \
debug.o \
hcd.o \
hw.o \
init.o \

46
drivers/usb/host/whci/asl.c
View File

@ -19,32 +19,11 @@
#include <linux/dma-mapping.h>
#include <linux/uwb/umc.h>
#include <linux/usb.h>
#define D_LOCAL 0
#include <linux/uwb/debug.h>
#include "../../wusbcore/wusbhc.h"
#include "whcd.h"
#if D_LOCAL >= 4
static void dump_asl(struct whc *whc, const char *tag)
{
struct device *dev = &whc->umc->dev;
struct whc_qset *qset;
d_printf(4, dev, "ASL %s\n", tag);
list_for_each_entry(qset, &whc->async_list, list_node) {
dump_qset(qset, dev);
}
}
#else
static inline void dump_asl(struct whc *whc, const char *tag)
{
}
#endif
static void qset_get_next_prev(struct whc *whc, struct whc_qset *qset,
struct whc_qset **next, struct whc_qset **prev)
{
@ -179,11 +158,26 @@ void asl_stop(struct whc *whc)
1000, "stop ASL");
}
/**
* asl_update - request an ASL update and wait for the hardware to be synced
* @whc: the WHCI HC
* @wusbcmd: WUSBCMD value to start the update.
*
* If the WUSB HC is inactive (i.e., the ASL is stopped) then the
* update must be skipped as the hardware may not respond to update
* requests.
*/
void asl_update(struct whc *whc, uint32_t wusbcmd)
{
whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
wait_event(whc->async_list_wq,
(le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0);
struct wusbhc *wusbhc = &whc->wusbhc;
mutex_lock(&wusbhc->mutex);
if (wusbhc->active) {
whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
wait_event(whc->async_list_wq,
(le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0);
}
mutex_unlock(&wusbhc->mutex);
}
/**
@ -202,8 +196,6 @@ void scan_async_work(struct work_struct *work)
spin_lock_irq(&whc->lock);
dump_asl(whc, "before processing");
/*
* Transerve the software list backwards so new qsets can be
* safely inserted into the ASL without making it non-circular.
@ -217,8 +209,6 @@ void scan_async_work(struct work_struct *work)
update |= process_qset(whc, qset);
}
dump_asl(whc, "after processing");
spin_unlock_irq(&whc->lock);
if (update) {

189
drivers/usb/host/whci/debug.c Normal file
View File

@ -0,0 +1,189 @@
/*
* Wireless Host Controller (WHC) debug.
*
* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kernel.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include "../../wusbcore/wusbhc.h"
#include "whcd.h"
struct whc_dbg {
struct dentry *di_f;
struct dentry *asl_f;
struct dentry *pzl_f;
};
void qset_print(struct seq_file *s, struct whc_qset *qset)
{
struct whc_std *std;
struct urb *urb = NULL;
int i;
seq_printf(s, "qset %08x\n", (u32)qset->qset_dma);
seq_printf(s, " -> %08x\n", (u32)qset->qh.link);
seq_printf(s, " info: %08x %08x %08x\n",
qset->qh.info1, qset->qh.info2, qset->qh.info3);
seq_printf(s, " sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count);
seq_printf(s, " TD: sts: %08x opts: %08x\n",
qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
seq_printf(s, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
i == qset->td_start ? 'S' : ' ',
i == qset->td_end ? 'E' : ' ',
i, qset->qtd[i].status, qset->qtd[i].options,
(u32)qset->qtd[i].page_list_ptr);
}
seq_printf(s, " ntds: %d\n", qset->ntds);
list_for_each_entry(std, &qset->stds, list_node) {
if (urb != std->urb) {
urb = std->urb;
seq_printf(s, " urb %p transferred: %d bytes\n", urb,
urb->actual_length);
}
if (std->qtd)
seq_printf(s, " sTD[%td]: %zu bytes @ %08x\n",
std->qtd - &qset->qtd[0],
std->len, std->num_pointers ?
(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
else
seq_printf(s, " sTD[-]: %zd bytes @ %08x\n",
std->len, std->num_pointers ?
(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
}
}
static int di_print(struct seq_file *s, void *p)
{
struct whc *whc = s->private;
char buf[72];
int d;
for (d = 0; d < whc->n_devices; d++) {
struct di_buf_entry *di = &whc->di_buf[d];
bitmap_scnprintf(buf, sizeof(buf),
(unsigned long *)di->availability_info, UWB_NUM_MAS);
seq_printf(s, "DI[%d]\n", d);
seq_printf(s, " availability: %s\n", buf);
seq_printf(s, " %c%c key idx: %d dev addr: %d\n",
(di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
(di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
(di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
(di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
}
return 0;
}
static int asl_print(struct seq_file *s, void *p)
{
struct whc *whc = s->private;
struct whc_qset *qset;
list_for_each_entry(qset, &whc->async_list, list_node) {
qset_print(s, qset);
}
return 0;
}
static int pzl_print(struct seq_file *s, void *p)
{
struct whc *whc = s->private;
struct whc_qset *qset;
int period;
for (period = 0; period < 5; period++) {
seq_printf(s, "Period %d\n", period);
list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
qset_print(s, qset);
}
}
return 0;
}
static int di_open(struct inode *inode, struct file *file)
{
return single_open(file, di_print, inode->i_private);
}
static int asl_open(struct inode *inode, struct file *file)
{
return single_open(file, asl_print, inode->i_private);
}
static int pzl_open(struct inode *inode, struct file *file)
{
return single_open(file, pzl_print, inode->i_private);
}
static struct file_operations di_fops = {
.open = di_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static struct file_operations asl_fops = {
.open = asl_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
static struct file_operations pzl_fops = {
.open = pzl_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.owner = THIS_MODULE,
};
void whc_dbg_init(struct whc *whc)
{
if (whc->wusbhc.pal.debugfs_dir == NULL)
return;
whc->dbg = kzalloc(sizeof(struct whc_dbg), GFP_KERNEL);
if (whc->dbg == NULL)
return;
whc->dbg->di_f = debugfs_create_file("di", 0444,
whc->wusbhc.pal.debugfs_dir, whc,
&di_fops);
whc->dbg->asl_f = debugfs_create_file("asl", 0444,
whc->wusbhc.pal.debugfs_dir, whc,
&asl_fops);
whc->dbg->pzl_f = debugfs_create_file("pzl", 0444,
whc->wusbhc.pal.debugfs_dir, whc,
&pzl_fops);
}
void whc_dbg_clean_up(struct whc *whc)
{
if (whc->dbg) {
debugfs_remove(whc->dbg->pzl_f);
debugfs_remove(whc->dbg->asl_f);
debugfs_remove(whc->dbg->di_f);
kfree(whc->dbg);
}
}

6
drivers/usb/host/whci/hcd.c
View File

@ -15,7 +15,6 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/uwb/umc.h>
@ -92,8 +91,6 @@ static void whc_stop(struct usb_hcd *usb_hcd)
mutex_lock(&wusbhc->mutex);
wusbhc_stop(wusbhc);
/* stop HC */
le_writel(0, whc->base + WUSBINTR);
whc_write_wusbcmd(whc, WUSBCMD_RUN, 0);
@ -276,6 +273,8 @@ static int whc_probe(struct umc_dev *umc)
goto error_wusbhc_b_create;
}
whc_dbg_init(whc);
return 0;
error_wusbhc_b_create:
@ -299,6 +298,7 @@ static void whc_remove(struct umc_dev *umc)
struct whc *whc = wusbhc_to_whc(wusbhc);
if (usb_hcd) {
whc_dbg_clean_up(whc);
wusbhc_b_destroy(wusbhc);
usb_remove_hcd(usb_hcd);
wusbhc_destroy(wusbhc);

8
drivers/usb/host/whci/hw.c
View File

@ -50,6 +50,7 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
unsigned long flags;
dma_addr_t dma_addr;
int t;
int ret = 0;
mutex_lock(&whc->mutex);
@ -61,7 +62,8 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
dev_err(&whc->umc->dev, "generic command timeout (%04x/%04x)\n",
le_readl(whc->base + WUSBGENCMDSTS),
le_readl(whc->base + WUSBGENCMDPARAMS));
return -ETIMEDOUT;
ret = -ETIMEDOUT;
goto out;
}
if (addr) {
@ -80,8 +82,8 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
whc->base + WUSBGENCMDSTS);
spin_unlock_irqrestore(&whc->lock, flags);
out:
mutex_unlock(&whc->mutex);
return 0;
return ret;
}

1
drivers/usb/host/whci/int.c
View File

@ -15,7 +15,6 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/uwb/umc.h>

49
drivers/usb/host/whci/pzl.c
View File

@ -19,35 +19,11 @@
#include <linux/dma-mapping.h>
#include <linux/uwb/umc.h>
#include <linux/usb.h>
#define D_LOCAL 0
#include <linux/uwb/debug.h>
#include "../../wusbcore/wusbhc.h"
#include "whcd.h"
#if D_LOCAL >= 4
static void dump_pzl(struct whc *whc, const char *tag)
{
struct device *dev = &whc->umc->dev;
struct whc_qset *qset;
int period = 0;
d_printf(4, dev, "PZL %s\n", tag);
for (period = 0; period < 5; period++) {
d_printf(4, dev, "Period %d\n", period);
list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
dump_qset(qset, dev);
}
}
}
#else
static inline void dump_pzl(struct whc *whc, const char *tag)
{
}
#endif
static void update_pzl_pointers(struct whc *whc, int period, u64 addr)
{
switch (period) {
@ -195,11 +171,26 @@ void pzl_stop(struct whc *whc)
1000, "stop PZL");
}
/**
* pzl_update - request a PZL update and wait for the hardware to be synced
* @whc: the WHCI HC
* @wusbcmd: WUSBCMD value to start the update.
*
* If the WUSB HC is inactive (i.e., the PZL is stopped) then the
* update must be skipped as the hardware may not respond to update
* requests.
*/
void pzl_update(struct whc *whc, uint32_t wusbcmd)
{
whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
wait_event(whc->periodic_list_wq,
(le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0);
struct wusbhc *wusbhc = &whc->wusbhc;
mutex_lock(&wusbhc->mutex);
if (wusbhc->active) {
whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
wait_event(whc->periodic_list_wq,
(le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0);
}
mutex_unlock(&wusbhc->mutex);
}
static void update_pzl_hw_view(struct whc *whc)
@ -235,8 +226,6 @@ void scan_periodic_work(struct work_struct *work)
spin_lock_irq(&whc->lock);
dump_pzl(whc, "before processing");
for (period = 4; period >= 0; period--) {
list_for_each_entry_safe(qset, t, &whc->periodic_list[period], list_node) {
if (!qset->in_hw_list)
@ -248,8 +237,6 @@ void scan_periodic_work(struct work_struct *work)
if (update & (WHC_UPDATE_ADDED | WHC_UPDATE_REMOVED))
update_pzl_hw_view(whc);
dump_pzl(whc, "after processing");
spin_unlock_irq(&whc->lock);
if (update) {

40
drivers/usb/host/whci/qset.c
View File

@ -24,46 +24,6 @@
#include "whcd.h"
void dump_qset(struct whc_qset *qset, struct device *dev)
{
struct whc_std *std;
struct urb *urb = NULL;
int i;
dev_dbg(dev, "qset %08x\n", (u32)qset->qset_dma);
dev_dbg(dev, " -> %08x\n", (u32)qset->qh.link);
dev_dbg(dev, " info: %08x %08x %08x\n",
qset->qh.info1, qset->qh.info2, qset->qh.info3);
dev_dbg(dev, " sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count);
dev_dbg(dev, " TD: sts: %08x opts: %08x\n",
qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
dev_dbg(dev, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
i == qset->td_start ? 'S' : ' ',
i == qset->td_end ? 'E' : ' ',
i, qset->qtd[i].status, qset->qtd[i].options,
(u32)qset->qtd[i].page_list_ptr);
}
dev_dbg(dev, " ntds: %d\n", qset->ntds);
list_for_each_entry(std, &qset->stds, list_node) {
if (urb != std->urb) {
urb = std->urb;
dev_dbg(dev, " urb %p transferred: %d bytes\n", urb,
urb->actual_length);
}
if (std->qtd)
dev_dbg(dev, " sTD[%td]: %zu bytes @ %08x\n",
std->qtd - &qset->qtd[0],
std->len, std->num_pointers ?
(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
else
dev_dbg(dev, " sTD[-]: %zd bytes @ %08x\n",
std->len, std->num_pointers ?
(u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
}
}
struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags)
{
struct whc_qset *qset;

11
drivers/usb/host/whci/whcd.h
View File

@ -21,6 +21,7 @@
#define __WHCD_H
#include <linux/uwb/whci.h>
#include <linux/uwb/umc.h>
#include <linux/workqueue.h>
#include "whci-hc.h"
@ -28,6 +29,7 @@
/* Generic command timeout. */
#define WHC_GENCMD_TIMEOUT_MS 100
struct whc_dbg;
struct whc {
struct wusbhc wusbhc;
@ -69,6 +71,8 @@ struct whc {
struct list_head periodic_removed_list;
wait_queue_head_t periodic_list_wq;
struct work_struct periodic_work;
struct whc_dbg *dbg;
};
#define wusbhc_to_whc(w) (container_of((w), struct whc, wusbhc))
@ -136,7 +140,7 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len);
/* wusb.c */
int whc_wusbhc_start(struct wusbhc *wusbhc);
void whc_wusbhc_stop(struct wusbhc *wusbhc);
void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay);
int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
u8 handle, struct wuie_hdr *wuie);
int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle);
@ -190,8 +194,11 @@ void process_inactive_qtd(struct whc *whc, struct whc_qset *qset,
struct whc_qtd *qtd);
enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset);
void qset_remove_complete(struct whc *whc, struct whc_qset *qset);
void dump_qset(struct whc_qset *qset, struct device *dev);
void pzl_update(struct whc *whc, uint32_t wusbcmd);
void asl_update(struct whc *whc, uint32_t wusbcmd);
/* debug.c */
void whc_dbg_init(struct whc *whc);
void whc_dbg_clean_up(struct whc *whc);
#endif /* #ifndef __WHCD_H */

2
drivers/usb/host/whci/whci-hc.h
View File

@ -410,6 +410,8 @@ struct dn_buf_entry {
# define WUSBDNTSCTRL_SLOTS(s) ((s) << 0)
#define WUSBTIME 0x68
# define WUSBTIME_CHANNEL_TIME_MASK 0x00ffffff
#define WUSBBPST 0x6c
#define WUSBDIBUPDATED 0x70

43
drivers/usb/host/whci/wusb.c
View File

@ -15,47 +15,19 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/uwb/umc.h>
#define D_LOCAL 1
#include <linux/uwb/debug.h>
#include "../../wusbcore/wusbhc.h"
#include "whcd.h"
#if D_LOCAL >= 1
static void dump_di(struct whc *whc, int idx)
{
struct di_buf_entry *di = &whc->di_buf[idx];
struct device *dev = &whc->umc->dev;
char buf[128];
bitmap_scnprintf(buf, sizeof(buf), (unsigned long *)di->availability_info, UWB_NUM_MAS);
d_printf(1, dev, "DI[%d]\n", idx);
d_printf(1, dev, " availability: %s\n", buf);
d_printf(1, dev, " %c%c key idx: %d dev addr: %d\n",
(di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
(di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
(di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
(di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
}
#else
static inline void dump_di(struct whc *whc, int idx)
{
}
#endif
static int whc_update_di(struct whc *whc, int idx)
{
int offset = idx / 32;
u32 bit = 1 << (idx % 32);
dump_di(whc, idx);
le_writel(bit, whc->base + WUSBDIBUPDATED + offset);
return whci_wait_for(&whc->umc->dev,
@ -64,8 +36,9 @@ static int whc_update_di(struct whc *whc, int idx)
}
/*
* WHCI starts and stops MMCs based on there being a valid GTK so
* these need only start/stop the asynchronous and periodic schedules.
* WHCI starts MMCs based on there being a valid GTK so these need
* only start/stop the asynchronous and periodic schedules and send a
* channel stop command.
*/
int whc_wusbhc_start(struct wusbhc *wusbhc)
@ -78,12 +51,20 @@ int whc_wusbhc_start(struct wusbhc *wusbhc)
return 0;
}
void whc_wusbhc_stop(struct wusbhc *wusbhc)
void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay)
{
struct whc *whc = wusbhc_to_whc(wusbhc);
u32 stop_time, now_time;
int ret;
pzl_stop(whc);
asl_stop(whc);
now_time = le_readl(whc->base + WUSBTIME) & WUSBTIME_CHANNEL_TIME_MASK;
stop_time = (now_time + ((delay * 8) << 7)) & 0x00ffffff;
ret = whc_do_gencmd(whc, WUSBGENCMDSTS_CHAN_STOP, stop_time, NULL, 0);
if (ret == 0)
msleep(delay);
}
int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,

1
drivers/usb/wusbcore/cbaf.c
View File

@ -88,7 +88,6 @@
*/
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/version.h>
#include <linux/usb.h>
#include <linux/interrupt.h>
#include <linux/delay.h>

79
drivers/usb/wusbcore/crypto.c
View File

@ -51,9 +51,17 @@
#include <linux/uwb.h>
#include <linux/usb/wusb.h>
#include <linux/scatterlist.h>
#define D_LOCAL 0
#include <linux/uwb/debug.h>
static int debug_crypto_verify = 0;
module_param(debug_crypto_verify, int, 0);
MODULE_PARM_DESC(debug_crypto_verify, "verify the key generation algorithms");
static void wusb_key_dump(const void *buf, size_t len)
{
print_hex_dump(KERN_ERR, " ", DUMP_PREFIX_OFFSET, 16, 1,
buf, len, 0);
}
/*
* Block of data, as understood by AES-CCM
@ -203,9 +211,6 @@ static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc,
const u8 bzero[16] = { 0 };
size_t zero_padding;
d_fnstart(3, NULL, "(tfm_cbc %p, tfm_aes %p, mic %p, "
"n %p, a %p, b %p, blen %zu)\n",
tfm_cbc, tfm_aes, mic, n, a, b, blen);
/*
* These checks should be compile time optimized out
* ensure @a fills b1's mac_header and following fields
@ -247,16 +252,6 @@ static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc,
b1.la = cpu_to_be16(blen + 14);
memcpy(&b1.mac_header, a, sizeof(*a));
d_printf(4, NULL, "I: B0 (%zu bytes)\n", sizeof(b0));
d_dump(4, NULL, &b0, sizeof(b0));
d_printf(4, NULL, "I: B1 (%zu bytes)\n", sizeof(b1));
d_dump(4, NULL, &b1, sizeof(b1));
d_printf(4, NULL, "I: B (%zu bytes)\n", blen);
d_dump(4, NULL, b, blen);
d_printf(4, NULL, "I: B 0-padding (%zu bytes)\n", zero_padding);
d_printf(4, NULL, "D: IV before crypto (%zu)\n", ivsize);
d_dump(4, NULL, iv, ivsize);
sg_init_table(sg, ARRAY_SIZE(sg));
sg_set_buf(&sg[0], &b0, sizeof(b0));
sg_set_buf(&sg[1], &b1, sizeof(b1));
@ -273,8 +268,6 @@ static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc,
result);
goto error_cbc_crypt;
}
d_printf(4, NULL, "D: MIC tag\n");
d_dump(4, NULL, iv, ivsize);
/* Now we crypt the MIC Tag (*iv) with Ax -- values per WUSB1.0[6.5]
* The procedure is to AES crypt the A0 block and XOR the MIC
@ -289,17 +282,10 @@ static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc,
ax.counter = 0;
crypto_cipher_encrypt_one(tfm_aes, (void *)&ax, (void *)&ax);
bytewise_xor(mic, &ax, iv, 8);
d_printf(4, NULL, "D: CTR[MIC]\n");
d_dump(4, NULL, &ax, 8);
d_printf(4, NULL, "D: CCM-MIC tag\n");
d_dump(4, NULL, mic, 8);
result = 8;
error_cbc_crypt:
kfree(dst_buf);
error_dst_buf:
d_fnend(3, NULL, "(tfm_cbc %p, tfm_aes %p, mic %p, "
"n %p, a %p, b %p, blen %zu)\n",
tfm_cbc, tfm_aes, mic, n, a, b, blen);
return result;
}
@ -321,10 +307,6 @@ ssize_t wusb_prf(void *out, size_t out_size,
u64 sfn = 0;
__le64 sfn_le;
d_fnstart(3, NULL, "(out %p, out_size %zu, key %p, _n %p, "
"a %p, b %p, blen %zu, len %zu)\n", out, out_size,
key, _n, a, b, blen, len);
tfm_cbc = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm_cbc)) {
result = PTR_ERR(tfm_cbc);
@ -366,9 +348,6 @@ ssize_t wusb_prf(void *out, size_t out_size,
error_setkey_cbc:
crypto_free_blkcipher(tfm_cbc);
error_alloc_cbc:
d_fnend(3, NULL, "(out %p, out_size %zu, key %p, _n %p, "
"a %p, b %p, blen %zu, len %zu) = %d\n", out, out_size,
key, _n, a, b, blen, len, (int)bytes);
return result;
}
@ -422,14 +401,14 @@ static int wusb_oob_mic_verify(void)
"mismatch between MIC result and WUSB1.0[A2]\n");
hs_size = sizeof(stv_hsmic_hs) - sizeof(stv_hsmic_hs.MIC);
printk(KERN_ERR "E: Handshake2 in: (%zu bytes)\n", hs_size);
dump_bytes(NULL, &stv_hsmic_hs, hs_size);
wusb_key_dump(&stv_hsmic_hs, hs_size);
printk(KERN_ERR "E: CCM Nonce in: (%zu bytes)\n",
sizeof(stv_hsmic_n));
dump_bytes(NULL, &stv_hsmic_n, sizeof(stv_hsmic_n));
wusb_key_dump(&stv_hsmic_n, sizeof(stv_hsmic_n));
printk(KERN_ERR "E: MIC out:\n");
dump_bytes(NULL, mic, sizeof(mic));
wusb_key_dump(mic, sizeof(mic));
printk(KERN_ERR "E: MIC out (from WUSB1.0[A.2]):\n");
dump_bytes(NULL, stv_hsmic_hs.MIC, sizeof(stv_hsmic_hs.MIC));
wusb_key_dump(stv_hsmic_hs.MIC, sizeof(stv_hsmic_hs.MIC));
result = -EINVAL;
} else
result = 0;
@ -497,19 +476,16 @@ static int wusb_key_derive_verify(void)
printk(KERN_ERR "E: WUSB key derivation test: "
"mismatch between key derivation result "
"and WUSB1.0[A1] Errata 2006/12\n");
printk(KERN_ERR "E: keydvt in: key (%zu bytes)\n",
sizeof(stv_key_a1));
dump_bytes(NULL, stv_key_a1, sizeof(stv_key_a1));
printk(KERN_ERR "E: keydvt in: nonce (%zu bytes)\n",
sizeof(stv_keydvt_n_a1));
dump_bytes(NULL, &stv_keydvt_n_a1, sizeof(stv_keydvt_n_a1));
printk(KERN_ERR "E: keydvt in: hnonce & dnonce (%zu bytes)\n",
sizeof(stv_keydvt_in_a1));
dump_bytes(NULL, &stv_keydvt_in_a1, sizeof(stv_keydvt_in_a1));
printk(KERN_ERR "E: keydvt in: key\n");
wusb_key_dump(stv_key_a1, sizeof(stv_key_a1));
printk(KERN_ERR "E: keydvt in: nonce\n");
wusb_key_dump( &stv_keydvt_n_a1, sizeof(stv_keydvt_n_a1));
printk(KERN_ERR "E: keydvt in: hnonce & dnonce\n");
wusb_key_dump(&stv_keydvt_in_a1, sizeof(stv_keydvt_in_a1));
printk(KERN_ERR "E: keydvt out: KCK\n");
dump_bytes(NULL, &keydvt_out.kck, sizeof(keydvt_out.kck));
wusb_key_dump(&keydvt_out.kck, sizeof(keydvt_out.kck));
printk(KERN_ERR "E: keydvt out: PTK\n");
dump_bytes(NULL, &keydvt_out.ptk, sizeof(keydvt_out.ptk));
wusb_key_dump(&keydvt_out.ptk, sizeof(keydvt_out.ptk));
result = -EINVAL;
} else
result = 0;
@ -526,10 +502,13 @@ int wusb_crypto_init(void)
{
int result;
result = wusb_key_derive_verify();
if (result < 0)
return result;
return wusb_oob_mic_verify();
if (debug_crypto_verify) {
result = wusb_key_derive_verify();
if (result < 0)
return result;
return wusb_oob_mic_verify();
}
return 0;
}
void wusb_crypto_exit(void)

4
drivers/usb/wusbcore/dev-sysfs.c
View File

@ -28,10 +28,6 @@
#include <linux/workqueue.h>
#include "wusbhc.h"
#undef D_LOCAL
#define D_LOCAL 4
#include <linux/uwb/debug.h>
static ssize_t wusb_disconnect_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)

231
drivers/usb/wusbcore/devconnect.c
View File

@ -57,9 +57,6 @@
* Called by notif.c:wusb_handle_dn_connect()
* when a DN_Connect is received.
*
* wusbhc_devconnect_auth() Called by rh.c:wusbhc_rh_port_reset() when
* doing the device connect sequence.
*
* wusb_devconnect_acked() Ack done, release resources.
*
* wusb_handle_dn_alive() Called by notif.c:wusb_handle_dn()
@ -69,9 +66,6 @@
* process a disconenct request from a
* device.
*
* wusb_dev_reset() Called by rh.c:wusbhc_rh_port_reset() when
* resetting a device.
*
* __wusb_dev_disable() Called by rh.c:wusbhc_rh_clear_port_feat() when
* disabling a port.
*
@ -97,10 +91,6 @@
#include <linux/workqueue.h>
#include "wusbhc.h"
#undef D_LOCAL
#define D_LOCAL 1
#include <linux/uwb/debug.h>
static void wusbhc_devconnect_acked_work(struct work_struct *work);
static void wusb_dev_free(struct wusb_dev *wusb_dev)
@ -240,6 +230,7 @@ static struct wusb_dev *wusbhc_cack_add(struct wusbhc *wusbhc,
list_add_tail(&wusb_dev->cack_node, &wusbhc->cack_list);
wusbhc->cack_count++;
wusbhc_fill_cack_ie(wusbhc);
return wusb_dev;
}
@ -250,12 +241,9 @@ static struct wusb_dev *wusbhc_cack_add(struct wusbhc *wusbhc,
*/
static void wusbhc_cack_rm(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
{
struct device *dev = wusbhc->dev;
d_fnstart(3, dev, "(wusbhc %p wusb_dev %p)\n", wusbhc, wusb_dev);
list_del_init(&wusb_dev->cack_node);
wusbhc->cack_count--;
wusbhc_fill_cack_ie(wusbhc);
d_fnend(3, dev, "(wusbhc %p wusb_dev %p) = void\n", wusbhc, wusb_dev);
}
/*
@ -263,14 +251,11 @@ static void wusbhc_cack_rm(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
static
void wusbhc_devconnect_acked(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
{
struct device *dev = wusbhc->dev;
d_fnstart(3, dev, "(wusbhc %p wusb_dev %p)\n", wusbhc, wusb_dev);
wusbhc_cack_rm(wusbhc, wusb_dev);
if (wusbhc->cack_count)
wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->cack_ie.hdr);
else
wusbhc_mmcie_rm(wusbhc, &wusbhc->cack_ie.hdr);
d_fnend(3, dev, "(wusbhc %p wusb_dev %p) = void\n", wusbhc, wusb_dev);
}
static void wusbhc_devconnect_acked_work(struct work_struct *work)
@ -320,7 +305,6 @@ void wusbhc_devconnect_ack(struct wusbhc *wusbhc, struct wusb_dn_connect *dnc,
struct wusb_port *port;
unsigned idx, devnum;
d_fnstart(3, dev, "(%p, %p, %s)\n", wusbhc, dnc, pr_cdid);
mutex_lock(&wusbhc->mutex);
/* Check we are not handling it already */
@ -366,16 +350,13 @@ void wusbhc_devconnect_ack(struct wusbhc *wusbhc, struct wusb_dn_connect *dnc,
port->wusb_dev = wusb_dev;
port->status |= USB_PORT_STAT_CONNECTION;
port->change |= USB_PORT_STAT_C_CONNECTION;
port->reset_count = 0;
/* Now the port status changed to connected; khubd will
* pick the change up and try to reset the port to bring it to
* the enabled state--so this process returns up to the stack
* and it calls back into wusbhc_rh_port_reset() who will call
* devconnect_auth().
* and it calls back into wusbhc_rh_port_reset().
*/
error_unlock:
mutex_unlock(&wusbhc->mutex);
d_fnend(3, dev, "(%p, %p, %s) = void\n", wusbhc, dnc, pr_cdid);
return;
}
@ -398,10 +379,8 @@ void wusbhc_devconnect_ack(struct wusbhc *wusbhc, struct wusb_dn_connect *dnc,
static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc,
struct wusb_port *port)
{
struct device *dev = wusbhc->dev;
struct wusb_dev *wusb_dev = port->wusb_dev;
d_fnstart(3, dev, "(wusbhc %p, port %p)\n", wusbhc, port);
port->status &= ~(USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE
| USB_PORT_STAT_SUSPEND | USB_PORT_STAT_RESET
| USB_PORT_STAT_LOW_SPEED | USB_PORT_STAT_HIGH_SPEED);
@ -413,54 +392,17 @@ static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc,
wusb_dev_put(wusb_dev);
}
port->wusb_dev = NULL;
/* don't reset the reset_count to zero or wusbhc_rh_port_reset will get
* confused! We only reset to zero when we connect a new device.
*/
/* After a device disconnects, change the GTK (see [WUSB]
* section 6.2.11.2). */
wusbhc_gtk_rekey(wusbhc);
d_fnend(3, dev, "(wusbhc %p, port %p) = void\n", wusbhc, port);
/* The Wireless USB part has forgotten about the device already; now
* khubd's timer will pick up the disconnection and remove the USB
* device from the system
*/
}
/*
* Authenticate a device into the WUSB Cluster
*
* Called from the Root Hub code (rh.c:wusbhc_rh_port_reset()) when
* asking for a reset on a port that is not enabled (ie: first connect
* on the port).
*
* Performs the 4way handshake to allow the device to comunicate w/ the
* WUSB Cluster securely; once done, issue a request to the device for
* it to change to address 0.
*
* This mimics the reset step of Wired USB that once resetting a
* device, leaves the port in enabled state and the dev with the
* default address (0).
*
* WUSB1.0[7.1.2]
*
* @port_idx: port where the change happened--This is the index into
* the wusbhc port array, not the USB port number.
*/
int wusbhc_devconnect_auth(struct wusbhc *wusbhc, u8 port_idx)
{
struct device *dev = wusbhc->dev;
struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
port->status &= ~USB_PORT_STAT_RESET;
port->status |= USB_PORT_STAT_ENABLE;
port->change |= USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_ENABLE;
d_fnend(3, dev, "(%p, %u) = 0\n", wusbhc, port_idx);
return 0;
}
/*
* Refresh the list of keep alives to emit in the MMC
*
@ -528,21 +470,15 @@ static void __wusbhc_keep_alive(struct wusbhc *wusbhc)
*/
static void wusbhc_keep_alive_run(struct work_struct *ws)
{
struct delayed_work *dw =
container_of(ws, struct delayed_work, work);
struct wusbhc *wusbhc =
container_of(dw, struct wusbhc, keep_alive_timer);
struct delayed_work *dw = container_of(ws, struct delayed_work, work);
struct wusbhc *wusbhc = container_of(dw, struct wusbhc, keep_alive_timer);
d_fnstart(5, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
if (wusbhc->active) {
mutex_lock(&wusbhc->mutex);
__wusbhc_keep_alive(wusbhc);
mutex_unlock(&wusbhc->mutex);
queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
(wusbhc->trust_timeout * CONFIG_HZ)/1000/2);
}
d_fnend(5, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
return;
mutex_lock(&wusbhc->mutex);
__wusbhc_keep_alive(wusbhc);
mutex_unlock(&wusbhc->mutex);
queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
msecs_to_jiffies(wusbhc->trust_timeout / 2));
}
/*
@ -585,10 +521,6 @@ static struct wusb_dev *wusbhc_find_dev_by_addr(struct wusbhc *wusbhc, u8 addr)
*/
static void wusbhc_handle_dn_alive(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
{
struct device *dev = wusbhc->dev;
d_printf(2, dev, "DN ALIVE: device 0x%02x pong\n", wusb_dev->addr);
mutex_lock(&wusbhc->mutex);
wusb_dev->entry_ts = jiffies;
__wusbhc_keep_alive(wusbhc);
@ -621,11 +553,10 @@ static void wusbhc_handle_dn_connect(struct wusbhc *wusbhc,
"no-beacon"
};
d_fnstart(3, dev, "(%p, %p, %zu)\n", wusbhc, dn_hdr, size);
if (size < sizeof(*dnc)) {
dev_err(dev, "DN CONNECT: short notification (%zu < %zu)\n",
size, sizeof(*dnc));
goto out;
return;
}
dnc = container_of(dn_hdr, struct wusb_dn_connect, hdr);
@ -637,10 +568,6 @@ static void wusbhc_handle_dn_connect(struct wusbhc *wusbhc,
wusb_dn_connect_new_connection(dnc) ? "connect" : "reconnect");
/* ACK the connect */
wusbhc_devconnect_ack(wusbhc, dnc, pr_cdid);
out:
d_fnend(3, dev, "(%p, %p, %zu) = void\n",
wusbhc, dn_hdr, size);
return;
}
/*
@ -661,60 +588,6 @@ static void wusbhc_handle_dn_disconnect(struct wusbhc *wusbhc, struct wusb_dev *
mutex_unlock(&wusbhc->mutex);
}
/*
* Reset a WUSB device on a HWA
*
* @wusbhc
* @port_idx Index of the port where the device is
*
* In Wireless USB, a reset is more or less equivalent to a full
* disconnect; so we just do a full disconnect and send the device a
* Device Reset IE (WUSB1.0[7.5.11]) giving it a few millisecs (6 MMCs).
*
* @wusbhc should be refcounted and unlocked
*/
int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port_idx)
{
int result;
struct device *dev = wusbhc->dev;
struct wusb_dev *wusb_dev;
struct wuie_reset *ie;
d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
mutex_lock(&wusbhc->mutex);
result = 0;
wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
if (wusb_dev == NULL) {
/* reset no device? ignore */
dev_dbg(dev, "RESET: no device at port %u, ignoring\n",
port_idx);
goto error_unlock;
}
result = -ENOMEM;
ie = kzalloc(sizeof(*ie), GFP_KERNEL);
if (ie == NULL)
goto error_unlock;
ie->hdr.bLength = sizeof(ie->hdr) + sizeof(ie->CDID);
ie->hdr.bIEIdentifier = WUIE_ID_RESET_DEVICE;
ie->CDID = wusb_dev->cdid;
result = wusbhc_mmcie_set(wusbhc, 0xff, 6, &ie->hdr);
if (result < 0) {
dev_err(dev, "RESET: cant's set MMC: %d\n", result);
goto error_kfree;
}
__wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
/* 120ms, hopefully 6 MMCs (FIXME) */
msleep(120);
wusbhc_mmcie_rm(wusbhc, &ie->hdr);
error_kfree:
kfree(ie);
error_unlock:
mutex_unlock(&wusbhc->mutex);
d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result);
return result;
}
/*
* Handle a Device Notification coming a host
*
@ -735,19 +608,17 @@ void wusbhc_handle_dn(struct wusbhc *wusbhc, u8 srcaddr,
struct device *dev = wusbhc->dev;
struct wusb_dev *wusb_dev;
d_fnstart(3, dev, "(%p, %p)\n", wusbhc, dn_hdr);
if (size < sizeof(struct wusb_dn_hdr)) {
dev_err(dev, "DN data shorter than DN header (%d < %d)\n",
(int)size, (int)sizeof(struct wusb_dn_hdr));
goto out;
return;
}
wusb_dev = wusbhc_find_dev_by_addr(wusbhc, srcaddr);
if (wusb_dev == NULL && dn_hdr->bType != WUSB_DN_CONNECT) {
dev_dbg(dev, "ignoring DN %d from unconnected device %02x\n",
dn_hdr->bType, srcaddr);
goto out;
return;
}
switch (dn_hdr->bType) {
@ -772,9 +643,6 @@ void wusbhc_handle_dn(struct wusbhc *wusbhc, u8 srcaddr,
dev_warn(dev, "unknown DN %u (%d octets) from %u\n",
dn_hdr->bType, (int)size, srcaddr);
}
out:
d_fnend(3, dev, "(%p, %p) = void\n", wusbhc, dn_hdr);
return;
}
EXPORT_SYMBOL_GPL(wusbhc_handle_dn);
@ -804,59 +672,30 @@ void __wusbhc_dev_disable(struct wusbhc *wusbhc, u8 port_idx)
struct wusb_dev *wusb_dev;
struct wuie_disconnect *ie;
d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
result = 0;
wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
if (wusb_dev == NULL) {
/* reset no device? ignore */
dev_dbg(dev, "DISCONNECT: no device at port %u, ignoring\n",
port_idx);
goto error;
return;
}
__wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
result = -ENOMEM;
ie = kzalloc(sizeof(*ie), GFP_KERNEL);
if (ie == NULL)
goto error;
return;
ie->hdr.bLength = sizeof(*ie);
ie->hdr.bIEIdentifier = WUIE_ID_DEVICE_DISCONNECT;
ie->bDeviceAddress = wusb_dev->addr;
result = wusbhc_mmcie_set(wusbhc, 0, 0, &ie->hdr);
if (result < 0) {
if (result < 0)
dev_err(dev, "DISCONNECT: can't set MMC: %d\n", result);
goto error_kfree;
else {
/* At least 6 MMCs, assuming at least 1 MMC per zone. */
msleep(7*4);
wusbhc_mmcie_rm(wusbhc, &ie->hdr);
}
/* 120ms, hopefully 6 MMCs */
msleep(100);
wusbhc_mmcie_rm(wusbhc, &ie->hdr);
error_kfree:
kfree(ie);
error:
d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result);
return;
}
static void wusb_cap_descr_printf(const unsigned level, struct device *dev,
const struct usb_wireless_cap_descriptor *wcd)
{
d_printf(level, dev,
"WUSB Capability Descriptor\n"
" bDevCapabilityType 0x%02x\n"
" bmAttributes 0x%02x\n"
" wPhyRates 0x%04x\n"
" bmTFITXPowerInfo 0x%02x\n"
" bmFFITXPowerInfo 0x%02x\n"
" bmBandGroup 0x%04x\n"
" bReserved 0x%02x\n",
wcd->bDevCapabilityType,
wcd->bmAttributes,
le16_to_cpu(wcd->wPHYRates),
wcd->bmTFITXPowerInfo,
wcd->bmFFITXPowerInfo,
wcd->bmBandGroup,
wcd->bReserved);
}
/*
@ -899,8 +738,6 @@ static int wusb_dev_bos_grok(struct usb_device *usb_dev,
}
cap_size = cap_hdr->bLength;
cap_type = cap_hdr->bDevCapabilityType;
d_printf(4, dev, "BOS Capability: 0x%02x (%zu bytes)\n",
cap_type, cap_size);
if (cap_size == 0)
break;
if (cap_size > top - itr) {
@ -912,7 +749,6 @@ static int wusb_dev_bos_grok(struct usb_device *usb_dev,
result = -EBADF;
goto error_bad_cap;
}
d_dump(3, dev, itr, cap_size);
switch (cap_type) {
case USB_CAP_TYPE_WIRELESS_USB:
if (cap_size != sizeof(*wusb_dev->wusb_cap_descr))
@ -920,10 +756,8 @@ static int wusb_dev_bos_grok(struct usb_device *usb_dev,
"descriptor is %zu bytes vs %zu "
"needed\n", cap_size,
sizeof(*wusb_dev->wusb_cap_descr));
else {
else
wusb_dev->wusb_cap_descr = itr;
wusb_cap_descr_printf(3, dev, itr);
}
break;
default:
dev_err(dev, "BUG? Unknown BOS capability 0x%02x "
@ -988,9 +822,7 @@ static int wusb_dev_bos_add(struct usb_device *usb_dev,
"%zu bytes): %zd\n", desc_size, result);
goto error_get_descriptor;
}
d_printf(2, dev, "Got BOS descriptor %zd bytes, %u capabilities\n",
result, bos->bNumDeviceCaps);
d_dump(2, dev, bos, result);
result = wusb_dev_bos_grok(usb_dev, wusb_dev, bos, result);
if (result < 0)
goto error_bad_bos;
@ -1056,8 +888,6 @@ static void wusb_dev_add_ncb(struct usb_device *usb_dev)
if (usb_dev->wusb == 0 || usb_dev->devnum == 1)
return; /* skip non wusb and wusb RHs */
d_fnstart(3, dev, "(usb_dev %p)\n", usb_dev);
wusbhc = wusbhc_get_by_usb_dev(usb_dev);
if (wusbhc == NULL)
goto error_nodev;
@ -1087,7 +917,6 @@ static void wusb_dev_add_ncb(struct usb_device *usb_dev)
wusb_dev_put(wusb_dev);
wusbhc_put(wusbhc);
error_nodev:
d_fnend(3, dev, "(usb_dev %p) = void\n", usb_dev);
return;
wusb_dev_sysfs_rm(wusb_dev);
@ -1174,11 +1003,10 @@ EXPORT_SYMBOL_GPL(__wusb_dev_get_by_usb_dev);
void wusb_dev_destroy(struct kref *_wusb_dev)
{
struct wusb_dev *wusb_dev
= container_of(_wusb_dev, struct wusb_dev, refcnt);
struct wusb_dev *wusb_dev = container_of(_wusb_dev, struct wusb_dev, refcnt);
list_del_init(&wusb_dev->cack_node);
wusb_dev_free(wusb_dev);
d_fnend(1, NULL, "%s (wusb_dev %p) = void\n", __func__, wusb_dev);
}
EXPORT_SYMBOL_GPL(wusb_dev_destroy);
@ -1190,8 +1018,6 @@ EXPORT_SYMBOL_GPL(wusb_dev_destroy);
*/
int wusbhc_devconnect_create(struct wusbhc *wusbhc)
{
d_fnstart(3, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
wusbhc->keep_alive_ie.hdr.bIEIdentifier = WUIE_ID_KEEP_ALIVE;
wusbhc->keep_alive_ie.hdr.bLength = sizeof(wusbhc->keep_alive_ie.hdr);
INIT_DELAYED_WORK(&wusbhc->keep_alive_timer, wusbhc_keep_alive_run);
@ -1200,7 +1026,6 @@ int wusbhc_devconnect_create(struct wusbhc *wusbhc)
wusbhc->cack_ie.hdr.bLength = sizeof(wusbhc->cack_ie.hdr);
INIT_LIST_HEAD(&wusbhc->cack_list);
d_fnend(3, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
return 0;
}
@ -1209,8 +1034,7 @@ int wusbhc_devconnect_create(struct wusbhc *wusbhc)
*/
void wusbhc_devconnect_destroy(struct wusbhc *wusbhc)
{
d_fnstart(3, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
d_fnend(3, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
/* no op */
}
/*
@ -1222,8 +1046,7 @@ void wusbhc_devconnect_destroy(struct wusbhc *wusbhc)
* FIXME: This also enables the keep alives but this is not necessary
* until there are connected and authenticated devices.
*/
int wusbhc_devconnect_start(struct wusbhc *wusbhc,
const struct wusb_ckhdid *chid)
int wusbhc_devconnect_start(struct wusbhc *wusbhc)
{
struct device *dev = wusbhc->dev;
struct wuie_host_info *hi;
@ -1236,7 +1059,7 @@ int wusbhc_devconnect_start(struct wusbhc *wusbhc,
hi->hdr.bLength = sizeof(*hi);
hi->hdr.bIEIdentifier = WUIE_ID_HOST_INFO;
hi->attributes = cpu_to_le16((wusbhc->rsv->stream << 3) | WUIE_HI_CAP_ALL);
hi->CHID = *chid;
hi->CHID = wusbhc->chid;
result = wusbhc_mmcie_set(wusbhc, 0, 0, &hi->hdr);
if (result < 0) {
dev_err(dev, "Cannot add Host Info MMCIE: %d\n", result);

118
drivers/usb/wusbcore/mmc.c
View File

@ -159,15 +159,35 @@ void wusbhc_mmcie_rm(struct wusbhc *wusbhc, struct wuie_hdr *wuie)
}
EXPORT_SYMBOL_GPL(wusbhc_mmcie_rm);
static int wusbhc_mmc_start(struct wusbhc *wusbhc)
{
int ret;
mutex_lock(&wusbhc->mutex);
ret = wusbhc->start(wusbhc);
if (ret >= 0)
wusbhc->active = 1;
mutex_unlock(&wusbhc->mutex);
return ret;
}
static void wusbhc_mmc_stop(struct wusbhc *wusbhc)
{
mutex_lock(&wusbhc->mutex);
wusbhc->active = 0;
wusbhc->stop(wusbhc, WUSB_CHANNEL_STOP_DELAY_MS);
mutex_unlock(&wusbhc->mutex);
}
/*
* wusbhc_start - start transmitting MMCs and accepting connections
* @wusbhc: the HC to start
* @chid: the CHID to use for this host
*
* Establishes a cluster reservation, enables device connections, and
* starts MMCs with appropriate DNTS parameters.
*/
int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
int wusbhc_start(struct wusbhc *wusbhc)
{
int result;
struct device *dev = wusbhc->dev;
@ -181,7 +201,7 @@ int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
goto error_rsv_establish;
}
result = wusbhc_devconnect_start(wusbhc, chid);
result = wusbhc_devconnect_start(wusbhc);
if (result < 0) {
dev_err(dev, "error enabling device connections: %d\n", result);
goto error_devconnect_start;
@ -199,12 +219,12 @@ int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
dev_err(dev, "Cannot set DNTS parameters: %d\n", result);
goto error_set_num_dnts;
}
result = wusbhc->start(wusbhc);
result = wusbhc_mmc_start(wusbhc);
if (result < 0) {
dev_err(dev, "error starting wusbch: %d\n", result);
goto error_wusbhc_start;
}
wusbhc->active = 1;
return 0;
error_wusbhc_start:
@ -218,77 +238,18 @@ int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
return result;
}
/*
* Disconnect all from the WUSB Channel
*
* Send a Host Disconnect IE in the MMC, wait, don't send it any more
*/
static int __wusbhc_host_disconnect_ie(struct wusbhc *wusbhc)
{
int result = -ENOMEM;
struct wuie_host_disconnect *host_disconnect_ie;
might_sleep();
host_disconnect_ie = kmalloc(sizeof(*host_disconnect_ie), GFP_KERNEL);
if (host_disconnect_ie == NULL)
goto error_alloc;
host_disconnect_ie->hdr.bLength = sizeof(*host_disconnect_ie);
host_disconnect_ie->hdr.bIEIdentifier = WUIE_ID_HOST_DISCONNECT;
result = wusbhc_mmcie_set(wusbhc, 0, 0, &host_disconnect_ie->hdr);
if (result < 0)
goto error_mmcie_set;
/* WUSB1.0[8.5.3.1 & 7.5.2] */
msleep(100);
wusbhc_mmcie_rm(wusbhc, &host_disconnect_ie->hdr);
error_mmcie_set:
kfree(host_disconnect_ie);
error_alloc:
return result;
}
/*
* wusbhc_stop - stop transmitting MMCs
* @wusbhc: the HC to stop
*
* Send a Host Disconnect IE, wait, remove all the MMCs (stop sending MMCs).
*
* If we can't allocate a Host Stop IE, screw it, we don't notify the
* devices we are disconnecting...
* Stops the WUSB channel and removes the cluster reservation.
*/
void wusbhc_stop(struct wusbhc *wusbhc)
{
if (wusbhc->active) {
wusbhc->active = 0;
wusbhc->stop(wusbhc);
wusbhc_sec_stop(wusbhc);
__wusbhc_host_disconnect_ie(wusbhc);
wusbhc_devconnect_stop(wusbhc);
wusbhc_rsv_terminate(wusbhc);
}
}
EXPORT_SYMBOL_GPL(wusbhc_stop);
/*
* Change the CHID in a WUSB Channel
*
* If it is just a new CHID, send a Host Disconnect IE and then change
* the CHID IE.
*/
static int __wusbhc_chid_change(struct wusbhc *wusbhc,
const struct wusb_ckhdid *chid)
{
int result = -ENOSYS;
struct device *dev = wusbhc->dev;
dev_err(dev, "%s() not implemented yet\n", __func__);
return result;
BUG_ON(wusbhc->wuie_host_info == NULL);
__wusbhc_host_disconnect_ie(wusbhc);
wusbhc->wuie_host_info->CHID = *chid;
result = wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->wuie_host_info->hdr);
if (result < 0)
dev_err(dev, "Can't update Host Info WUSB IE: %d\n", result);
return result;
wusbhc_mmc_stop(wusbhc);
wusbhc_sec_stop(wusbhc);
wusbhc_devconnect_stop(wusbhc);
wusbhc_rsv_terminate(wusbhc);
}
/*
@ -306,16 +267,19 @@ int wusbhc_chid_set(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
chid = NULL;
mutex_lock(&wusbhc->mutex);
if (wusbhc->active) {
if (chid)
result = __wusbhc_chid_change(wusbhc, chid);
else
wusbhc_stop(wusbhc);
} else {
if (chid)
wusbhc_start(wusbhc, chid);
if (chid) {
if (wusbhc->active) {
mutex_unlock(&wusbhc->mutex);
return -EBUSY;
}
wusbhc->chid = *chid;
}
mutex_unlock(&wusbhc->mutex);
if (chid)
result = uwb_radio_start(&wusbhc->pal);
else
uwb_radio_stop(&wusbhc->pal);
return result;
}
EXPORT_SYMBOL_GPL(wusbhc_chid_set);

16
drivers/usb/wusbcore/pal.c
View File

@ -18,6 +18,16 @@
*/
#include "wusbhc.h"
static void wusbhc_channel_changed(struct uwb_pal *pal, int channel)
{
struct wusbhc *wusbhc = container_of(pal, struct wusbhc, pal);
if (channel < 0)
wusbhc_stop(wusbhc);
else
wusbhc_start(wusbhc);
}
/**
* wusbhc_pal_register - register the WUSB HC as a UWB PAL
* @wusbhc: the WUSB HC
@ -28,8 +38,10 @@ int wusbhc_pal_register(struct wusbhc *wusbhc)
wusbhc->pal.name = "wusbhc";
wusbhc->pal.device = wusbhc->usb_hcd.self.controller;
wusbhc->pal.rc = wusbhc->uwb_rc;
wusbhc->pal.channel_changed = wusbhc_channel_changed;
return uwb_pal_register(wusbhc->uwb_rc, &wusbhc->pal);
return uwb_pal_register(&wusbhc->pal);
}
/**
@ -38,5 +50,5 @@ int wusbhc_pal_register(struct wusbhc *wusbhc)
*/
void wusbhc_pal_unregister(struct wusbhc *wusbhc)
{
uwb_pal_unregister(wusbhc->uwb_rc, &wusbhc->pal);
uwb_pal_unregister(&wusbhc->pal);
}

21
drivers/usb/wusbcore/reservation.c
View File

@ -48,18 +48,19 @@ static void wusbhc_rsv_complete_cb(struct uwb_rsv *rsv)
{
struct wusbhc *wusbhc = rsv->pal_priv;
struct device *dev = wusbhc->dev;
struct uwb_mas_bm mas;
char buf[72];
switch (rsv->state) {
case UWB_RSV_STATE_O_ESTABLISHED:
bitmap_scnprintf(buf, sizeof(buf), rsv->mas.bm, UWB_NUM_MAS);
uwb_rsv_get_usable_mas(rsv, &mas);
bitmap_scnprintf(buf, sizeof(buf), mas.bm, UWB_NUM_MAS);
dev_dbg(dev, "established reservation: %s\n", buf);
wusbhc_bwa_set(wusbhc, rsv->stream, &rsv->mas);
wusbhc_bwa_set(wusbhc, rsv->stream, &mas);
break;
case UWB_RSV_STATE_NONE:
dev_dbg(dev, "removed reservation\n");
wusbhc_bwa_set(wusbhc, 0, NULL);
wusbhc->rsv = NULL;
break;
default:
dev_dbg(dev, "unexpected reservation state: %d\n", rsv->state);
@ -86,13 +87,12 @@ int wusbhc_rsv_establish(struct wusbhc *wusbhc)
bcid.data[0] = wusbhc->cluster_id;
bcid.data[1] = 0;
rsv->owner = &rc->uwb_dev;
rsv->target.type = UWB_RSV_TARGET_DEVADDR;
rsv->target.devaddr = bcid;
rsv->type = UWB_DRP_TYPE_PRIVATE;
rsv->max_mas = 256;
rsv->min_mas = 16; /* one MAS per zone? */
rsv->sparsity = 16; /* at least one MAS in each zone? */
rsv->max_mas = 256; /* try to get as much as possible */
rsv->min_mas = 15; /* one MAS per zone */
rsv->max_interval = 1; /* max latency is one zone */
rsv->is_multicast = true;
ret = uwb_rsv_establish(rsv);
@ -105,11 +105,14 @@ int wusbhc_rsv_establish(struct wusbhc *wusbhc)
/**
* wusbhc_rsv_terminate - terminate any cluster reservation
* wusbhc_rsv_terminate - terminate the cluster reservation
* @wusbhc: the WUSB host whose reservation is to be terminated
*/
void wusbhc_rsv_terminate(struct wusbhc *wusbhc)
{
if (wusbhc->rsv)
if (wusbhc->rsv) {
uwb_rsv_terminate(wusbhc->rsv);
uwb_rsv_destroy(wusbhc->rsv);
wusbhc->rsv = NULL;
}
}

104
drivers/usb/wusbcore/rh.c
View File

@ -71,19 +71,20 @@
*/
#include "wusbhc.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/*
* Reset a fake port
*
* This can be called to reset a port from any other state or to reset
* it when connecting. In Wireless USB they are different; when doing
* a new connect that involves going over the authentication. When
* just reseting, its a different story.
* Using a Reset Device IE is too heavyweight as it causes the device
* to enter the UnConnected state and leave the cluster, this can mean
* that when the device reconnects it is connected to a different fake
* port.
*
* The Linux USB stack resets a port twice before it considers it
* enabled, so we have to detect and ignore that.
* Instead, reset authenticated devices with a SetAddress(0), followed
* by a SetAddresss(AuthAddr).
*
* For unauthenticated devices just pretend to reset but do nothing.
* If the device initialization continues to fail it will eventually
* time out after TrustTimeout and enter the UnConnected state.
*
* @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
*
@ -97,20 +98,20 @@ static int wusbhc_rh_port_reset(struct wusbhc *wusbhc, u8 port_idx)
{
int result = 0;
struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
struct wusb_dev *wusb_dev = port->wusb_dev;
d_fnstart(3, wusbhc->dev, "(wusbhc %p port_idx %u)\n",
wusbhc, port_idx);
if (port->reset_count == 0) {
wusbhc_devconnect_auth(wusbhc, port_idx);
port->reset_count++;
} else if (port->reset_count == 1)
/* see header */
d_printf(2, wusbhc->dev, "Ignoring second reset on port_idx "
"%u\n", port_idx);
port->status |= USB_PORT_STAT_RESET;
port->change |= USB_PORT_STAT_C_RESET;
if (wusb_dev->addr & WUSB_DEV_ADDR_UNAUTH)
result = 0;
else
result = wusbhc_dev_reset(wusbhc, port_idx);
d_fnend(3, wusbhc->dev, "(wusbhc %p port_idx %u) = %d\n",
wusbhc, port_idx, result);
result = wusb_dev_update_address(wusbhc, wusb_dev);
port->status &= ~USB_PORT_STAT_RESET;
port->status |= USB_PORT_STAT_ENABLE;
port->change |= USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_ENABLE;
return result;
}
@ -138,7 +139,6 @@ int wusbhc_rh_status_data(struct usb_hcd *usb_hcd, char *_buf)
size_t cnt, size;
unsigned long *buf = (unsigned long *) _buf;
d_fnstart(1, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
/* WE DON'T LOCK, see comment */
size = wusbhc->ports_max + 1 /* hub bit */;
size = (size + 8 - 1) / 8; /* round to bytes */
@ -147,8 +147,6 @@ int wusbhc_rh_status_data(struct usb_hcd *usb_hcd, char *_buf)
set_bit(cnt + 1, buf);
else
clear_bit(cnt + 1, buf);
d_fnend(1, wusbhc->dev, "(wusbhc %p) %u, buffer:\n", wusbhc, (int)size);
d_dump(1, wusbhc->dev, _buf, size);
return size;
}
EXPORT_SYMBOL_GPL(wusbhc_rh_status_data);
@ -197,9 +195,7 @@ static int wusbhc_rh_get_hub_descr(struct wusbhc *wusbhc, u16 wValue,
static int wusbhc_rh_clear_hub_feat(struct wusbhc *wusbhc, u16 feature)
{
int result;
struct device *dev = wusbhc->dev;
d_fnstart(4, dev, "(%p, feature 0x%04u)\n", wusbhc, feature);
switch (feature) {
case C_HUB_LOCAL_POWER:
/* FIXME: maybe plug bit 0 to the power input status,
@ -211,7 +207,6 @@ static int wusbhc_rh_clear_hub_feat(struct wusbhc *wusbhc, u16 feature)
default:
result = -EPIPE;
}
d_fnend(4, dev, "(%p, feature 0x%04u), %d\n", wusbhc, feature, result);
return result;
}
@ -238,14 +233,10 @@ static int wusbhc_rh_get_hub_status(struct wusbhc *wusbhc, u32 *buf,
static int wusbhc_rh_set_port_feat(struct wusbhc *wusbhc, u16 feature,
u8 selector, u8 port_idx)
{
int result = -EINVAL;
struct device *dev = wusbhc->dev;
d_fnstart(4, dev, "(feat 0x%04u, selector 0x%u, port_idx %d)\n",
feature, selector, port_idx);
if (port_idx > wusbhc->ports_max)
goto error;
return -EINVAL;
switch (feature) {
/* According to USB2.0[11.24.2.13]p2, these features
@ -255,35 +246,27 @@ static int wusbhc_rh_set_port_feat(struct wusbhc *wusbhc, u16 feature,
case USB_PORT_FEAT_C_SUSPEND:
case USB_PORT_FEAT_C_CONNECTION:
case USB_PORT_FEAT_C_RESET:
result = 0;
break;
return 0;
case USB_PORT_FEAT_POWER:
/* No such thing, but we fake it works */
mutex_lock(&wusbhc->mutex);
wusb_port_by_idx(wusbhc, port_idx)->status |= USB_PORT_STAT_POWER;
mutex_unlock(&wusbhc->mutex);
result = 0;
break;
return 0;
case USB_PORT_FEAT_RESET:
result = wusbhc_rh_port_reset(wusbhc, port_idx);
break;
return wusbhc_rh_port_reset(wusbhc, port_idx);
case USB_PORT_FEAT_ENABLE:
case USB_PORT_FEAT_SUSPEND:
dev_err(dev, "(port_idx %d) set feat %d/%d UNIMPLEMENTED\n",
port_idx, feature, selector);
result = -ENOSYS;
break;
return -ENOSYS;
default:
dev_err(dev, "(port_idx %d) set feat %d/%d UNKNOWN\n",
port_idx, feature, selector);
result = -EPIPE;
break;
return -EPIPE;
}
error:
d_fnend(4, dev, "(feat 0x%04u, selector 0x%u, port_idx %d) = %d\n",
feature, selector, port_idx, result);
return result;
return 0;
}
/*
@ -294,17 +277,13 @@ static int wusbhc_rh_set_port_feat(struct wusbhc *wusbhc, u16 feature,
static int wusbhc_rh_clear_port_feat(struct wusbhc *wusbhc, u16 feature,
u8 selector, u8 port_idx)
{
int result = -EINVAL;
int result = 0;
struct device *dev = wusbhc->dev;
d_fnstart(4, dev, "(wusbhc %p feat 0x%04x selector %d port_idx %d)\n",
wusbhc, feature, selector, port_idx);
if (port_idx > wusbhc->ports_max)
goto error;
return -EINVAL;
mutex_lock(&wusbhc->mutex);
result = 0;
switch (feature) {
case USB_PORT_FEAT_POWER: /* fake port always on */
/* According to USB2.0[11.24.2.7.1.4], no need to implement? */
@ -324,10 +303,8 @@ static int wusbhc_rh_clear_port_feat(struct wusbhc *wusbhc, u16 feature,
break;
case USB_PORT_FEAT_SUSPEND:
case USB_PORT_FEAT_C_SUSPEND:
case 0xffff: /* ??? FIXME */
dev_err(dev, "(port_idx %d) Clear feat %d/%d UNIMPLEMENTED\n",
port_idx, feature, selector);
/* dump_stack(); */
result = -ENOSYS;
break;
default:
@ -337,9 +314,7 @@ static int wusbhc_rh_clear_port_feat(struct wusbhc *wusbhc, u16 feature,
break;
}
mutex_unlock(&wusbhc->mutex);
error:
d_fnend(4, dev, "(wusbhc %p feat 0x%04x selector %d port_idx %d) = "
"%d\n", wusbhc, feature, selector, port_idx, result);
return result;
}
@ -351,22 +326,17 @@ static int wusbhc_rh_clear_port_feat(struct wusbhc *wusbhc, u16 feature,
static int wusbhc_rh_get_port_status(struct wusbhc *wusbhc, u16 port_idx,
u32 *_buf, u16 wLength)
{
int result = -EINVAL;
u16 *buf = (u16 *) _buf;
d_fnstart(1, wusbhc->dev, "(wusbhc %p port_idx %u wLength %u)\n",
wusbhc, port_idx, wLength);
if (port_idx > wusbhc->ports_max)
goto error;
return -EINVAL;
mutex_lock(&wusbhc->mutex);
buf[0] = cpu_to_le16(wusb_port_by_idx(wusbhc, port_idx)->status);
buf[1] = cpu_to_le16(wusb_port_by_idx(wusbhc, port_idx)->change);
result = 0;
mutex_unlock(&wusbhc->mutex);
error:
d_fnend(1, wusbhc->dev, "(wusbhc %p) = %d, buffer:\n", wusbhc, result);
d_dump(1, wusbhc->dev, _buf, wLength);
return result;
return 0;
}
/*

78
drivers/usb/wusbcore/security.c
View File

@ -27,19 +27,6 @@
#include <linux/random.h>
#include "wusbhc.h"
/*
* DEBUG & SECURITY WARNING!!!!
*
* If you enable this past 1, the debug code will weaken the
* cryptographic safety of the system (on purpose, for debugging).
*
* Weaken means:
* we print secret keys and intermediate values all the way,
*/
#undef D_LOCAL
#define D_LOCAL 2
#include <linux/uwb/debug.h>
static void wusbhc_set_gtk_callback(struct urb *urb);
static void wusbhc_gtk_rekey_done_work(struct work_struct *work);
@ -219,7 +206,6 @@ int wusb_dev_sec_add(struct wusbhc *wusbhc,
const void *itr, *top;
char buf[64];
d_fnstart(3, dev, "(usb_dev %p, wusb_dev %p)\n", usb_dev, wusb_dev);
result = usb_get_descriptor(usb_dev, USB_DT_SECURITY,
0, &secd, sizeof(secd));
if (result < sizeof(secd)) {
@ -228,8 +214,6 @@ int wusb_dev_sec_add(struct wusbhc *wusbhc,
goto error_secd;
}
secd_size = le16_to_cpu(secd.wTotalLength);
d_printf(5, dev, "got %d bytes of sec descriptor, total is %d\n",
result, secd_size);
secd_buf = kmalloc(secd_size, GFP_KERNEL);
if (secd_buf == NULL) {
dev_err(dev, "Can't allocate space for security descriptors\n");
@ -242,7 +226,6 @@ int wusb_dev_sec_add(struct wusbhc *wusbhc,
"not enough data: %d\n", result);
goto error_secd_all;
}
d_printf(5, dev, "got %d bytes of sec descriptors\n", result);
bytes = 0;
itr = secd_buf + sizeof(secd);
top = secd_buf + result;
@ -279,14 +262,12 @@ int wusb_dev_sec_add(struct wusbhc *wusbhc,
goto error_no_ccm1;
}
wusb_dev->ccm1_etd = *ccm1_etd;
dev_info(dev, "supported encryption: %s; using %s (0x%02x/%02x)\n",
buf, wusb_et_name(ccm1_etd->bEncryptionType),
ccm1_etd->bEncryptionValue, ccm1_etd->bAuthKeyIndex);
dev_dbg(dev, "supported encryption: %s; using %s (0x%02x/%02x)\n",
buf, wusb_et_name(ccm1_etd->bEncryptionType),
ccm1_etd->bEncryptionValue, ccm1_etd->bAuthKeyIndex);
result = 0;
kfree(secd_buf);
out:
d_fnend(3, dev, "(usb_dev %p, wusb_dev %p) = %d\n",
usb_dev, wusb_dev, result);
return result;
@ -303,32 +284,6 @@ void wusb_dev_sec_rm(struct wusb_dev *wusb_dev)
/* Nothing so far */
}
static void hs_printk(unsigned level, struct device *dev,
struct usb_handshake *hs)
{
d_printf(level, dev,
" bMessageNumber: %u\n"
" bStatus: %u\n"
" tTKID: %02x %02x %02x\n"
" CDID: %02x %02x %02x %02x %02x %02x %02x %02x\n"
" %02x %02x %02x %02x %02x %02x %02x %02x\n"
" nonce: %02x %02x %02x %02x %02x %02x %02x %02x\n"
" %02x %02x %02x %02x %02x %02x %02x %02x\n"
" MIC: %02x %02x %02x %02x %02x %02x %02x %02x\n",
hs->bMessageNumber, hs->bStatus,
hs->tTKID[2], hs->tTKID[1], hs->tTKID[0],
hs->CDID[0], hs->CDID[1], hs->CDID[2], hs->CDID[3],
hs->CDID[4], hs->CDID[5], hs->CDID[6], hs->CDID[7],
hs->CDID[8], hs->CDID[9], hs->CDID[10], hs->CDID[11],
hs->CDID[12], hs->CDID[13], hs->CDID[14], hs->CDID[15],
hs->nonce[0], hs->nonce[1], hs->nonce[2], hs->nonce[3],
hs->nonce[4], hs->nonce[5], hs->nonce[6], hs->nonce[7],
hs->nonce[8], hs->nonce[9], hs->nonce[10], hs->nonce[11],
hs->nonce[12], hs->nonce[13], hs->nonce[14], hs->nonce[15],
hs->MIC[0], hs->MIC[1], hs->MIC[2], hs->MIC[3],
hs->MIC[4], hs->MIC[5], hs->MIC[6], hs->MIC[7]);
}
/**
* Update the address of an unauthenticated WUSB device
*
@ -338,8 +293,7 @@ static void hs_printk(unsigned level, struct device *dev,
* Before the device's address (as known by it) was usb_dev->devnum |
* 0x80 (unauthenticated address). With this we update it to usb_dev->devnum.
*/
static int wusb_dev_update_address(struct wusbhc *wusbhc,
struct wusb_dev *wusb_dev)
int wusb_dev_update_address(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
{
int result = -ENOMEM;
struct usb_device *usb_dev = wusb_dev->usb_dev;
@ -422,9 +376,6 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
get_random_bytes(&hs[0].nonce, sizeof(hs[0].nonce));
memset(hs[0].MIC, 0, sizeof(hs[0].MIC)); /* Per WUSB1.0[T7-22] */
d_printf(1, dev, "I: sending hs1:\n");
hs_printk(2, dev, &hs[0]);
result = usb_control_msg(
usb_dev, usb_sndctrlpipe(usb_dev, 0),
USB_REQ_SET_HANDSHAKE,
@ -445,8 +396,6 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
dev_err(dev, "Handshake2: request failed: %d\n", result);
goto error_hs2;
}
d_printf(1, dev, "got HS2:\n");
hs_printk(2, dev, &hs[1]);
result = -EINVAL;
if (hs[1].bMessageNumber != 2) {
@ -487,10 +436,6 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
result);
goto error_hs2;
}
d_printf(2, dev, "KCK:\n");
d_dump(2, dev, keydvt_out.kck, sizeof(keydvt_out.kck));
d_printf(2, dev, "PTK:\n");
d_dump(2, dev, keydvt_out.ptk, sizeof(keydvt_out.ptk));
/* Compute MIC and verify it */
result = wusb_oob_mic(mic, keydvt_out.kck, &ccm_n, &hs[1]);
@ -500,8 +445,6 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
goto error_hs2;
}
d_printf(2, dev, "MIC:\n");
d_dump(2, dev, mic, sizeof(mic));
if (memcmp(hs[1].MIC, mic, sizeof(hs[1].MIC))) {
dev_err(dev, "Handshake2 failed: MIC mismatch\n");
goto error_hs2;
@ -521,9 +464,6 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
goto error_hs2;
}
d_printf(1, dev, "I: sending hs3:\n");
hs_printk(2, dev, &hs[2]);
result = usb_control_msg(
usb_dev, usb_sndctrlpipe(usb_dev, 0),
USB_REQ_SET_HANDSHAKE,
@ -534,14 +474,11 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
goto error_hs3;
}
d_printf(1, dev, "I: turning on encryption on host for device\n");
d_dump(2, dev, keydvt_out.ptk, sizeof(keydvt_out.ptk));
result = wusbhc->set_ptk(wusbhc, wusb_dev->port_idx, tkid,
keydvt_out.ptk, sizeof(keydvt_out.ptk));
if (result < 0)
goto error_wusbhc_set_ptk;
d_printf(1, dev, "I: setting a GTK\n");
result = wusb_dev_set_gtk(wusbhc, wusb_dev);
if (result < 0) {
dev_err(dev, "Set GTK for device: request failed: %d\n",
@ -551,13 +488,12 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
/* Update the device's address from unauth to auth */
if (usb_dev->authenticated == 0) {
d_printf(1, dev, "I: updating addres to auth from non-auth\n");
result = wusb_dev_update_address(wusbhc, wusb_dev);
if (result < 0)
goto error_dev_update_address;
}
result = 0;
d_printf(1, dev, "I: 4way handshke done, device authenticated\n");
dev_info(dev, "device authenticated\n");
error_dev_update_address:
error_wusbhc_set_gtk:
@ -570,10 +506,8 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
memset(&keydvt_in, 0, sizeof(keydvt_in));
memset(&ccm_n, 0, sizeof(ccm_n));
memset(mic, 0, sizeof(mic));
if (result < 0) {
/* error path */
if (result < 0)
wusb_dev_set_encryption(usb_dev, 0);
}
error_dev_set_encryption:
kfree(hs);
error_kzalloc:

16
drivers/usb/wusbcore/wa-nep.c
View File

@ -51,7 +51,7 @@
*/
#include <linux/workqueue.h>
#include <linux/ctype.h>
#include <linux/uwb/debug.h>
#include "wa-hc.h"
#include "wusbhc.h"
@ -139,13 +139,10 @@ static void wa_notif_dispatch(struct work_struct *ws)
/* FIXME: unimplemented WA NOTIFs */
/* fallthru */
default:
if (printk_ratelimit()) {
dev_err(dev, "HWA: unknown notification 0x%x, "
"%zu bytes; discarding\n",
notif_hdr->bNotifyType,
(size_t)notif_hdr->bLength);
dump_bytes(dev, notif_hdr, 16);
}
dev_err(dev, "HWA: unknown notification 0x%x, "
"%zu bytes; discarding\n",
notif_hdr->bNotifyType,
(size_t)notif_hdr->bLength);
break;
}
}
@ -160,12 +157,9 @@ static void wa_notif_dispatch(struct work_struct *ws)
* discard the data, as this should not happen.
*/
exhausted_buffer:
if (!printk_ratelimit())
goto out;
dev_warn(dev, "HWA: device sent short notification, "
"%d bytes missing; discarding %d bytes.\n",
missing, (int)size);
dump_bytes(dev, itr, size);
goto out;
}

68
drivers/usb/wusbcore/wa-rpipe.c
View File

@ -60,13 +60,10 @@
#include <linux/init.h>
#include <asm/atomic.h>
#include <linux/bitmap.h>
#include "wusbhc.h"
#include "wa-hc.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
static int __rpipe_get_descr(struct wahc *wa,
struct usb_rpipe_descriptor *descr, u16 index)
{
@ -76,7 +73,6 @@ static int __rpipe_get_descr(struct wahc *wa,
/* Get the RPIPE descriptor -- we cannot use the usb_get_descriptor()
* function because the arguments are different.
*/
d_printf(1, dev, "rpipe %u: get descr\n", index);
result = usb_control_msg(
wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
USB_REQ_GET_DESCRIPTOR,
@ -115,7 +111,6 @@ static int __rpipe_set_descr(struct wahc *wa,
/* we cannot use the usb_get_descriptor() function because the
* arguments are different.
*/
d_printf(1, dev, "rpipe %u: set descr\n", index);
result = usb_control_msg(
wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
USB_REQ_SET_DESCRIPTOR,
@ -174,13 +169,12 @@ void rpipe_destroy(struct kref *_rpipe)
{
struct wa_rpipe *rpipe = container_of(_rpipe, struct wa_rpipe, refcnt);
u8 index = le16_to_cpu(rpipe->descr.wRPipeIndex);
d_fnstart(1, NULL, "(rpipe %p %u)\n", rpipe, index);
if (rpipe->ep)
rpipe->ep->hcpriv = NULL;
rpipe_put_idx(rpipe->wa, index);
wa_put(rpipe->wa);
kfree(rpipe);
d_fnend(1, NULL, "(rpipe %p %u)\n", rpipe, index);
}
EXPORT_SYMBOL_GPL(rpipe_destroy);
@ -202,7 +196,6 @@ static int rpipe_get_idle(struct wa_rpipe **prpipe, struct wahc *wa, u8 crs,
struct wa_rpipe *rpipe;
struct device *dev = &wa->usb_iface->dev;
d_fnstart(3, dev, "(wa %p crs 0x%02x)\n", wa, crs);
rpipe = kzalloc(sizeof(*rpipe), gfp);
if (rpipe == NULL)
return -ENOMEM;
@ -223,14 +216,12 @@ static int rpipe_get_idle(struct wa_rpipe **prpipe, struct wahc *wa, u8 crs,
}
*prpipe = NULL;
kfree(rpipe);
d_fnend(3, dev, "(wa %p crs 0x%02x) = -ENXIO\n", wa, crs);
return -ENXIO;
found:
set_bit(rpipe_idx, wa->rpipe_bm);
rpipe->wa = wa_get(wa);
*prpipe = rpipe;
d_fnstart(3, dev, "(wa %p crs 0x%02x) = 0\n", wa, crs);
return 0;
}
@ -239,7 +230,6 @@ static int __rpipe_reset(struct wahc *wa, unsigned index)
int result;
struct device *dev = &wa->usb_iface->dev;
d_printf(1, dev, "rpipe %u: reset\n", index);
result = usb_control_msg(
wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
USB_REQ_RPIPE_RESET,
@ -276,7 +266,6 @@ static struct usb_wireless_ep_comp_descriptor *rpipe_epc_find(
struct usb_descriptor_header *hdr;
struct usb_wireless_ep_comp_descriptor *epcd;
d_fnstart(3, dev, "(ep %p)\n", ep);
if (ep->desc.bEndpointAddress == 0) {
epcd = &epc0;
goto out;
@ -310,7 +299,6 @@ static struct usb_wireless_ep_comp_descriptor *rpipe_epc_find(
itr_size -= hdr->bDescriptorType;
}
out:
d_fnend(3, dev, "(ep %p) = %p\n", ep, epcd);
return epcd;
}
@ -329,8 +317,6 @@ static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa,
struct usb_wireless_ep_comp_descriptor *epcd;
u8 unauth;
d_fnstart(3, dev, "(rpipe %p wa %p ep %p, urb %p)\n",
rpipe, wa, ep, urb);
epcd = rpipe_epc_find(dev, ep);
if (epcd == NULL) {
dev_err(dev, "ep 0x%02x: can't find companion descriptor\n",
@ -350,10 +336,12 @@ static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa,
/* FIXME: use maximum speed as supported or recommended by device */
rpipe->descr.bSpeed = usb_pipeendpoint(urb->pipe) == 0 ?
UWB_PHY_RATE_53 : UWB_PHY_RATE_200;
d_printf(2, dev, "addr %u (0x%02x) rpipe #%u ep# %u speed %d\n",
urb->dev->devnum, urb->dev->devnum | unauth,
le16_to_cpu(rpipe->descr.wRPipeIndex),
usb_pipeendpoint(urb->pipe), rpipe->descr.bSpeed);
dev_dbg(dev, "addr %u (0x%02x) rpipe #%u ep# %u speed %d\n",
urb->dev->devnum, urb->dev->devnum | unauth,
le16_to_cpu(rpipe->descr.wRPipeIndex),
usb_pipeendpoint(urb->pipe), rpipe->descr.bSpeed);
/* see security.c:wusb_update_address() */
if (unlikely(urb->dev->devnum == 0x80))
rpipe->descr.bDeviceAddress = 0;
@ -384,8 +372,6 @@ static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa,
}
result = 0;
error:
d_fnend(3, dev, "(rpipe %p wa %p ep %p urb %p) = %d\n",
rpipe, wa, ep, urb, result);
return result;
}
@ -405,8 +391,6 @@ static int rpipe_check_aim(const struct wa_rpipe *rpipe, const struct wahc *wa,
u8 unauth = (usb_dev->wusb && !usb_dev->authenticated) ? 0x80 : 0;
u8 portnum = wusb_port_no_to_idx(urb->dev->portnum);
d_fnstart(3, dev, "(rpipe %p wa %p ep %p, urb %p)\n",
rpipe, wa, ep, urb);
#define AIM_CHECK(rdf, val, text) \
do { \
if (rpipe->descr.rdf != (val)) { \
@ -451,8 +435,6 @@ int rpipe_get_by_ep(struct wahc *wa, struct usb_host_endpoint *ep,
struct wa_rpipe *rpipe;
u8 eptype;
d_fnstart(3, dev, "(wa %p ep %p urb %p gfp 0x%08x)\n", wa, ep, urb,
gfp);
mutex_lock(&wa->rpipe_mutex);
rpipe = ep->hcpriv;
if (rpipe != NULL) {
@ -462,9 +444,9 @@ int rpipe_get_by_ep(struct wahc *wa, struct usb_host_endpoint *ep,
goto error;
}
__rpipe_get(rpipe);
d_printf(2, dev, "ep 0x%02x: reusing rpipe %u\n",
ep->desc.bEndpointAddress,
le16_to_cpu(rpipe->descr.wRPipeIndex));
dev_dbg(dev, "ep 0x%02x: reusing rpipe %u\n",
ep->desc.bEndpointAddress,
le16_to_cpu(rpipe->descr.wRPipeIndex));
} else {
/* hmm, assign idle rpipe, aim it */
result = -ENOBUFS;
@ -480,14 +462,12 @@ int rpipe_get_by_ep(struct wahc *wa, struct usb_host_endpoint *ep,
ep->hcpriv = rpipe;
rpipe->ep = ep;
__rpipe_get(rpipe); /* for caching into ep->hcpriv */
d_printf(2, dev, "ep 0x%02x: using rpipe %u\n",
ep->desc.bEndpointAddress,
le16_to_cpu(rpipe->descr.wRPipeIndex));
dev_dbg(dev, "ep 0x%02x: using rpipe %u\n",
ep->desc.bEndpointAddress,
le16_to_cpu(rpipe->descr.wRPipeIndex));
}
d_dump(4, dev, &rpipe->descr, sizeof(rpipe->descr));
error:
mutex_unlock(&wa->rpipe_mutex);
d_fnend(3, dev, "(wa %p ep %p urb %p gfp 0x%08x)\n", wa, ep, urb, gfp);
return result;
}
@ -507,7 +487,7 @@ int wa_rpipes_create(struct wahc *wa)
void wa_rpipes_destroy(struct wahc *wa)
{
struct device *dev = &wa->usb_iface->dev;
d_fnstart(3, dev, "(wa %p)\n", wa);
if (!bitmap_empty(wa->rpipe_bm, wa->rpipes)) {
char buf[256];
WARN_ON(1);
@ -515,7 +495,6 @@ void wa_rpipes_destroy(struct wahc *wa)
dev_err(dev, "BUG: pipes not released on exit: %s\n", buf);
}
kfree(wa->rpipe_bm);
d_fnend(3, dev, "(wa %p)\n", wa);
}
/*
@ -530,33 +509,20 @@ void wa_rpipes_destroy(struct wahc *wa)
*/
void rpipe_ep_disable(struct wahc *wa, struct usb_host_endpoint *ep)
{
struct device *dev = &wa->usb_iface->dev;
struct wa_rpipe *rpipe;
d_fnstart(2, dev, "(wa %p ep %p)\n", wa, ep);
mutex_lock(&wa->rpipe_mutex);
rpipe = ep->hcpriv;
if (rpipe != NULL) {
unsigned rc = atomic_read(&rpipe->refcnt.refcount);
int result;
u16 index = le16_to_cpu(rpipe->descr.wRPipeIndex);
if (rc != 1)
d_printf(1, dev, "(wa %p ep %p) rpipe %p refcnt %u\n",
wa, ep, rpipe, rc);
d_printf(1, dev, "rpipe %u: abort\n", index);
result = usb_control_msg(
usb_control_msg(
wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
USB_REQ_RPIPE_ABORT,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE,
0, index, NULL, 0, 1000 /* FIXME: arbitrary */);
if (result < 0 && result != -ENODEV /* dev is gone */)
d_printf(1, dev, "(wa %p rpipe %u): abort failed: %d\n",
wa, index, result);
rpipe_put(rpipe);
}
mutex_unlock(&wa->rpipe_mutex);
d_fnend(2, dev, "(wa %p ep %p)\n", wa, ep);
return;
}
EXPORT_SYMBOL_GPL(rpipe_ep_disable);

180
drivers/usb/wusbcore/wa-xfer.c
View File

@ -82,13 +82,10 @@
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/hash.h>
#include "wa-hc.h"
#include "wusbhc.h"
#undef D_LOCAL
#define D_LOCAL 0 /* 0 disabled, > 0 different levels... */
#include <linux/uwb/debug.h>
enum {
WA_SEGS_MAX = 255,
};
@ -180,7 +177,6 @@ static void wa_xfer_destroy(struct kref *_xfer)
}
}
kfree(xfer);
d_printf(2, NULL, "xfer %p destroyed\n", xfer);
}
static void wa_xfer_get(struct wa_xfer *xfer)
@ -190,10 +186,7 @@ static void wa_xfer_get(struct wa_xfer *xfer)
static void wa_xfer_put(struct wa_xfer *xfer)
{
d_fnstart(3, NULL, "(xfer %p) -- ref count bef put %d\n",
xfer, atomic_read(&xfer->refcnt.refcount));
kref_put(&xfer->refcnt, wa_xfer_destroy);
d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
}
/*
@ -209,7 +202,7 @@ static void wa_xfer_put(struct wa_xfer *xfer)
static void wa_xfer_giveback(struct wa_xfer *xfer)
{
unsigned long flags;
d_fnstart(3, NULL, "(xfer %p)\n", xfer);
spin_lock_irqsave(&xfer->wa->xfer_list_lock, flags);
list_del_init(&xfer->list_node);
spin_unlock_irqrestore(&xfer->wa->xfer_list_lock, flags);
@ -217,7 +210,6 @@ static void wa_xfer_giveback(struct wa_xfer *xfer)
wusbhc_giveback_urb(xfer->wa->wusb, xfer->urb, xfer->result);
wa_put(xfer->wa);
wa_xfer_put(xfer);
d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
}
/*
@ -227,13 +219,10 @@ static void wa_xfer_giveback(struct wa_xfer *xfer)
*/
static void wa_xfer_completion(struct wa_xfer *xfer)
{
d_fnstart(3, NULL, "(xfer %p)\n", xfer);
if (xfer->wusb_dev)
wusb_dev_put(xfer->wusb_dev);
rpipe_put(xfer->ep->hcpriv);
wa_xfer_giveback(xfer);
d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
return;
}
/*
@ -243,12 +232,12 @@ static void wa_xfer_completion(struct wa_xfer *xfer)
*/
static unsigned __wa_xfer_is_done(struct wa_xfer *xfer)
{
struct device *dev = &xfer->wa->usb_iface->dev;
unsigned result, cnt;
struct wa_seg *seg;
struct urb *urb = xfer->urb;
unsigned found_short = 0;
d_fnstart(3, NULL, "(xfer %p)\n", xfer);
result = xfer->segs_done == xfer->segs_submitted;
if (result == 0)
goto out;
@ -258,10 +247,8 @@ static unsigned __wa_xfer_is_done(struct wa_xfer *xfer)
switch (seg->status) {
case WA_SEG_DONE:
if (found_short && seg->result > 0) {
if (printk_ratelimit())
printk(KERN_ERR "xfer %p#%u: bad short "
"segments (%zu)\n", xfer, cnt,
seg->result);
dev_dbg(dev, "xfer %p#%u: bad short segments (%zu)\n",
xfer, cnt, seg->result);
urb->status = -EINVAL;
goto out;
}
@ -269,36 +256,30 @@ static unsigned __wa_xfer_is_done(struct wa_xfer *xfer)
if (seg->result < xfer->seg_size
&& cnt != xfer->segs-1)
found_short = 1;
d_printf(2, NULL, "xfer %p#%u: DONE short %d "
"result %zu urb->actual_length %d\n",
xfer, seg->index, found_short, seg->result,
urb->actual_length);
dev_dbg(dev, "xfer %p#%u: DONE short %d "
"result %zu urb->actual_length %d\n",
xfer, seg->index, found_short, seg->result,
urb->actual_length);
break;
case WA_SEG_ERROR:
xfer->result = seg->result;
d_printf(2, NULL, "xfer %p#%u: ERROR result %zu\n",
xfer, seg->index, seg->result);
dev_dbg(dev, "xfer %p#%u: ERROR result %zu\n",
xfer, seg->index, seg->result);
goto out;
case WA_SEG_ABORTED:
WARN_ON(urb->status != -ECONNRESET
&& urb->status != -ENOENT);
d_printf(2, NULL, "xfer %p#%u ABORTED: result %d\n",
xfer, seg->index, urb->status);
dev_dbg(dev, "xfer %p#%u ABORTED: result %d\n",
xfer, seg->index, urb->status);
xfer->result = urb->status;
goto out;
default:
/* if (printk_ratelimit()) */
printk(KERN_ERR "xfer %p#%u: "
"is_done bad state %d\n",
xfer, cnt, seg->status);
dev_warn(dev, "xfer %p#%u: is_done bad state %d\n",
xfer, cnt, seg->status);
xfer->result = -EINVAL;
WARN_ON(1);
goto out;
}
}
xfer->result = 0;
out:
d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
return result;
}
@ -424,8 +405,6 @@ static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer,
struct urb *urb = xfer->urb;
struct wa_rpipe *rpipe = xfer->ep->hcpriv;
d_fnstart(3, dev, "(xfer %p [rpipe %p] urb %p)\n",
xfer, rpipe, urb);
switch (rpipe->descr.bmAttribute & 0x3) {
case USB_ENDPOINT_XFER_CONTROL:
*pxfer_type = WA_XFER_TYPE_CTL;
@ -472,12 +451,10 @@ static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer,
if (xfer->segs == 0 && *pxfer_type == WA_XFER_TYPE_CTL)
xfer->segs = 1;
error:
d_fnend(3, dev, "(xfer %p [rpipe %p] urb %p) = %d\n",
xfer, rpipe, urb, (int)result);
return result;
}
/** Fill in the common request header and xfer-type specific data. */
/* Fill in the common request header and xfer-type specific data. */
static void __wa_xfer_setup_hdr0(struct wa_xfer *xfer,
struct wa_xfer_hdr *xfer_hdr0,
enum wa_xfer_type xfer_type,
@ -534,14 +511,13 @@ static void wa_seg_dto_cb(struct urb *urb)
unsigned rpipe_ready = 0;
u8 done = 0;
d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
switch (urb->status) {
case 0:
spin_lock_irqsave(&xfer->lock, flags);
wa = xfer->wa;
dev = &wa->usb_iface->dev;
d_printf(2, dev, "xfer %p#%u: data out done (%d bytes)\n",
xfer, seg->index, urb->actual_length);
dev_dbg(dev, "xfer %p#%u: data out done (%d bytes)\n",
xfer, seg->index, urb->actual_length);
if (seg->status < WA_SEG_PENDING)
seg->status = WA_SEG_PENDING;
seg->result = urb->actual_length;
@ -555,9 +531,8 @@ static void wa_seg_dto_cb(struct urb *urb)
wa = xfer->wa;
dev = &wa->usb_iface->dev;
rpipe = xfer->ep->hcpriv;
if (printk_ratelimit())
dev_err(dev, "xfer %p#%u: data out error %d\n",
xfer, seg->index, urb->status);
dev_dbg(dev, "xfer %p#%u: data out error %d\n",
xfer, seg->index, urb->status);
if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
EDC_ERROR_TIMEFRAME)){
dev_err(dev, "DTO: URB max acceptable errors "
@ -578,7 +553,6 @@ static void wa_seg_dto_cb(struct urb *urb)
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
}
/*
@ -610,14 +584,12 @@ static void wa_seg_cb(struct urb *urb)
unsigned rpipe_ready;
u8 done = 0;
d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
switch (urb->status) {
case 0:
spin_lock_irqsave(&xfer->lock, flags);
wa = xfer->wa;
dev = &wa->usb_iface->dev;
d_printf(2, dev, "xfer %p#%u: request done\n",
xfer, seg->index);
dev_dbg(dev, "xfer %p#%u: request done\n", xfer, seg->index);
if (xfer->is_inbound && seg->status < WA_SEG_PENDING)
seg->status = WA_SEG_PENDING;
spin_unlock_irqrestore(&xfer->lock, flags);
@ -652,7 +624,6 @@ static void wa_seg_cb(struct urb *urb)
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
}
/*
@ -750,9 +721,6 @@ static int __wa_xfer_setup(struct wa_xfer *xfer, struct urb *urb)
size_t xfer_hdr_size, cnt, transfer_size;
struct wa_xfer_hdr *xfer_hdr0, *xfer_hdr;
d_fnstart(3, dev, "(xfer %p [rpipe %p] urb %p)\n",
xfer, xfer->ep->hcpriv, urb);
result = __wa_xfer_setup_sizes(xfer, &xfer_type);
if (result < 0)
goto error_setup_sizes;
@ -788,8 +756,6 @@ static int __wa_xfer_setup(struct wa_xfer *xfer, struct urb *urb)
result = 0;
error_setup_segs:
error_setup_sizes:
d_fnend(3, dev, "(xfer %p [rpipe %p] urb %p) = %d\n",
xfer, xfer->ep->hcpriv, urb, result);
return result;
}
@ -843,9 +809,6 @@ static void wa_xfer_delayed_run(struct wa_rpipe *rpipe)
struct wa_xfer *xfer;
unsigned long flags;
d_fnstart(1, dev, "(rpipe #%d) %d segments available\n",
le16_to_cpu(rpipe->descr.wRPipeIndex),
atomic_read(&rpipe->segs_available));
spin_lock_irqsave(&rpipe->seg_lock, flags);
while (atomic_read(&rpipe->segs_available) > 0
&& !list_empty(&rpipe->seg_list)) {
@ -854,10 +817,8 @@ static void wa_xfer_delayed_run(struct wa_rpipe *rpipe)
list_del(&seg->list_node);
xfer = seg->xfer;
result = __wa_seg_submit(rpipe, xfer, seg);
d_printf(1, dev, "xfer %p#%u submitted from delayed "
"[%d segments available] %d\n",
xfer, seg->index,
atomic_read(&rpipe->segs_available), result);
dev_dbg(dev, "xfer %p#%u submitted from delayed [%d segments available] %d\n",
xfer, seg->index, atomic_read(&rpipe->segs_available), result);
if (unlikely(result < 0)) {
spin_unlock_irqrestore(&rpipe->seg_lock, flags);
spin_lock_irqsave(&xfer->lock, flags);
@ -868,10 +829,6 @@ static void wa_xfer_delayed_run(struct wa_rpipe *rpipe)
}
}
spin_unlock_irqrestore(&rpipe->seg_lock, flags);
d_fnend(1, dev, "(rpipe #%d) = void, %d segments available\n",
le16_to_cpu(rpipe->descr.wRPipeIndex),
atomic_read(&rpipe->segs_available));
}
/*
@ -894,9 +851,6 @@ static int __wa_xfer_submit(struct wa_xfer *xfer)
u8 available;
u8 empty;
d_fnstart(3, dev, "(xfer %p [rpipe %p])\n",
xfer, xfer->ep->hcpriv);
spin_lock_irqsave(&wa->xfer_list_lock, flags);
list_add_tail(&xfer->list_node, &wa->xfer_list);
spin_unlock_irqrestore(&wa->xfer_list_lock, flags);
@ -908,30 +862,24 @@ static int __wa_xfer_submit(struct wa_xfer *xfer)
available = atomic_read(&rpipe->segs_available);
empty = list_empty(&rpipe->seg_list);
seg = xfer->seg[cnt];
d_printf(2, dev, "xfer %p#%u: available %u empty %u (%s)\n",
xfer, cnt, available, empty,
available == 0 || !empty ? "delayed" : "submitted");
dev_dbg(dev, "xfer %p#%u: available %u empty %u (%s)\n",
xfer, cnt, available, empty,
available == 0 || !empty ? "delayed" : "submitted");
if (available == 0 || !empty) {
d_printf(1, dev, "xfer %p#%u: delayed\n", xfer, cnt);
dev_dbg(dev, "xfer %p#%u: delayed\n", xfer, cnt);
seg->status = WA_SEG_DELAYED;
list_add_tail(&seg->list_node, &rpipe->seg_list);
} else {
result = __wa_seg_submit(rpipe, xfer, seg);
if (result < 0)
if (result < 0) {
__wa_xfer_abort(xfer);
goto error_seg_submit;
}
}
xfer->segs_submitted++;
}
spin_unlock_irqrestore(&rpipe->seg_lock, flags);
d_fnend(3, dev, "(xfer %p [rpipe %p]) = void\n", xfer,
xfer->ep->hcpriv);
return result;
error_seg_submit:
__wa_xfer_abort(xfer);
spin_unlock_irqrestore(&rpipe->seg_lock, flags);
d_fnend(3, dev, "(xfer %p [rpipe %p]) = void\n", xfer,
xfer->ep->hcpriv);
return result;
}
@ -964,11 +912,9 @@ static void wa_urb_enqueue_b(struct wa_xfer *xfer)
struct urb *urb = xfer->urb;
struct wahc *wa = xfer->wa;
struct wusbhc *wusbhc = wa->wusb;
struct device *dev = &wa->usb_iface->dev;
struct wusb_dev *wusb_dev;
unsigned done;
d_fnstart(3, dev, "(wa %p urb %p)\n", wa, urb);
result = rpipe_get_by_ep(wa, xfer->ep, urb, xfer->gfp);
if (result < 0)
goto error_rpipe_get;
@ -997,7 +943,6 @@ static void wa_urb_enqueue_b(struct wa_xfer *xfer)
if (result < 0)
goto error_xfer_submit;
spin_unlock_irqrestore(&xfer->lock, flags);
d_fnend(3, dev, "(wa %p urb %p) = void\n", wa, urb);
return;
/* this is basically wa_xfer_completion() broken up wa_xfer_giveback()
@ -1015,7 +960,6 @@ static void wa_urb_enqueue_b(struct wa_xfer *xfer)
error_rpipe_get:
xfer->result = result;
wa_xfer_giveback(xfer);
d_fnend(3, dev, "(wa %p urb %p) = (void) %d\n", wa, urb, result);
return;
error_xfer_submit:
@ -1024,8 +968,6 @@ static void wa_urb_enqueue_b(struct wa_xfer *xfer)
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
wa_xfer_completion(xfer);
d_fnend(3, dev, "(wa %p urb %p) = (void) %d\n", wa, urb, result);
return;
}
/*
@ -1041,11 +983,9 @@ static void wa_urb_enqueue_b(struct wa_xfer *xfer)
void wa_urb_enqueue_run(struct work_struct *ws)
{
struct wahc *wa = container_of(ws, struct wahc, xfer_work);
struct device *dev = &wa->usb_iface->dev;
struct wa_xfer *xfer, *next;
struct urb *urb;
d_fnstart(3, dev, "(wa %p)\n", wa);
spin_lock_irq(&wa->xfer_list_lock);
list_for_each_entry_safe(xfer, next, &wa->xfer_delayed_list,
list_node) {
@ -1059,7 +999,6 @@ void wa_urb_enqueue_run(struct work_struct *ws)
spin_lock_irq(&wa->xfer_list_lock);
}
spin_unlock_irq(&wa->xfer_list_lock);
d_fnend(3, dev, "(wa %p) = void\n", wa);
}
EXPORT_SYMBOL_GPL(wa_urb_enqueue_run);
@ -1084,9 +1023,6 @@ int wa_urb_enqueue(struct wahc *wa, struct usb_host_endpoint *ep,
unsigned long my_flags;
unsigned cant_sleep = irqs_disabled() | in_atomic();
d_fnstart(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x)\n",
wa, ep, urb, urb->transfer_buffer_length, gfp);
if (urb->transfer_buffer == NULL
&& !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
&& urb->transfer_buffer_length != 0) {
@ -1108,11 +1044,13 @@ int wa_urb_enqueue(struct wahc *wa, struct usb_host_endpoint *ep,
xfer->gfp = gfp;
xfer->ep = ep;
urb->hcpriv = xfer;
d_printf(2, dev, "xfer %p urb %p pipe 0x%02x [%d bytes] %s %s %s\n",
xfer, urb, urb->pipe, urb->transfer_buffer_length,
urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? "dma" : "nodma",
urb->pipe & USB_DIR_IN ? "inbound" : "outbound",
cant_sleep ? "deferred" : "inline");
dev_dbg(dev, "xfer %p urb %p pipe 0x%02x [%d bytes] %s %s %s\n",
xfer, urb, urb->pipe, urb->transfer_buffer_length,
urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? "dma" : "nodma",
urb->pipe & USB_DIR_IN ? "inbound" : "outbound",
cant_sleep ? "deferred" : "inline");
if (cant_sleep) {
usb_get_urb(urb);
spin_lock_irqsave(&wa->xfer_list_lock, my_flags);
@ -1122,15 +1060,11 @@ int wa_urb_enqueue(struct wahc *wa, struct usb_host_endpoint *ep,
} else {
wa_urb_enqueue_b(xfer);
}
d_fnend(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x) = 0\n",
wa, ep, urb, urb->transfer_buffer_length, gfp);
return 0;
error_dequeued:
kfree(xfer);
error_kmalloc:
d_fnend(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x) = %d\n",
wa, ep, urb, urb->transfer_buffer_length, gfp, result);
return result;
}
EXPORT_SYMBOL_GPL(wa_urb_enqueue);
@ -1155,7 +1089,6 @@ EXPORT_SYMBOL_GPL(wa_urb_enqueue);
*/
int wa_urb_dequeue(struct wahc *wa, struct urb *urb)
{
struct device *dev = &wa->usb_iface->dev;
unsigned long flags, flags2;
struct wa_xfer *xfer;
struct wa_seg *seg;
@ -1163,9 +1096,6 @@ int wa_urb_dequeue(struct wahc *wa, struct urb *urb)
unsigned cnt;
unsigned rpipe_ready = 0;
d_fnstart(3, dev, "(wa %p, urb %p)\n", wa, urb);
d_printf(1, dev, "xfer %p urb %p: aborting\n", urb->hcpriv, urb);
xfer = urb->hcpriv;
if (xfer == NULL) {
/* NOthing setup yet enqueue will see urb->status !=
@ -1234,13 +1164,11 @@ int wa_urb_dequeue(struct wahc *wa, struct urb *urb)
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
return 0;
out_unlock:
spin_unlock_irqrestore(&xfer->lock, flags);
out:
d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
return 0;
dequeue_delayed:
@ -1250,7 +1178,6 @@ int wa_urb_dequeue(struct wahc *wa, struct urb *urb)
spin_unlock_irqrestore(&xfer->lock, flags);
wa_xfer_giveback(xfer);
usb_put_urb(urb); /* we got a ref in enqueue() */
d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
return 0;
}
EXPORT_SYMBOL_GPL(wa_urb_dequeue);
@ -1326,7 +1253,6 @@ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer)
u8 usb_status;
unsigned rpipe_ready = 0;
d_fnstart(3, dev, "(wa %p xfer %p)\n", wa, xfer);
spin_lock_irqsave(&xfer->lock, flags);
seg_idx = xfer_result->bTransferSegment & 0x7f;
if (unlikely(seg_idx >= xfer->segs))
@ -1334,8 +1260,8 @@ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer)
seg = xfer->seg[seg_idx];
rpipe = xfer->ep->hcpriv;
usb_status = xfer_result->bTransferStatus;
d_printf(2, dev, "xfer %p#%u: bTransferStatus 0x%02x (seg %u)\n",
xfer, seg_idx, usb_status, seg->status);
dev_dbg(dev, "xfer %p#%u: bTransferStatus 0x%02x (seg %u)\n",
xfer, seg_idx, usb_status, seg->status);
if (seg->status == WA_SEG_ABORTED
|| seg->status == WA_SEG_ERROR) /* already handled */
goto segment_aborted;
@ -1391,10 +1317,8 @@ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer)
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
d_fnend(3, dev, "(wa %p xfer %p) = void\n", wa, xfer);
return;
error_submit_buf_in:
if (edc_inc(&wa->dti_edc, EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) {
dev_err(dev, "DTI: URB max acceptable errors "
@ -1416,11 +1340,8 @@ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer)
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
d_fnend(3, dev, "(wa %p xfer %p) = void [segment/DTI-submit error]\n",
wa, xfer);
return;
error_bad_seg:
spin_unlock_irqrestore(&xfer->lock, flags);
wa_urb_dequeue(wa, xfer->urb);
@ -1431,17 +1352,11 @@ static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer)
"exceeded, resetting device\n");
wa_reset_all(wa);
}
d_fnend(3, dev, "(wa %p xfer %p) = void [bad seg]\n", wa, xfer);
return;
segment_aborted:
/* nothing to do, as the aborter did the completion */
spin_unlock_irqrestore(&xfer->lock, flags);
d_fnend(3, dev, "(wa %p xfer %p) = void [segment aborted]\n",
wa, xfer);
return;
}
/*
@ -1465,15 +1380,14 @@ static void wa_buf_in_cb(struct urb *urb)
unsigned long flags;
u8 done = 0;
d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
switch (urb->status) {
case 0:
spin_lock_irqsave(&xfer->lock, flags);
wa = xfer->wa;
dev = &wa->usb_iface->dev;
rpipe = xfer->ep->hcpriv;
d_printf(2, dev, "xfer %p#%u: data in done (%zu bytes)\n",
xfer, seg->index, (size_t)urb->actual_length);
dev_dbg(dev, "xfer %p#%u: data in done (%zu bytes)\n",
xfer, seg->index, (size_t)urb->actual_length);
seg->status = WA_SEG_DONE;
seg->result = urb->actual_length;
xfer->segs_done++;
@ -1514,7 +1428,6 @@ static void wa_buf_in_cb(struct urb *urb)
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
}
/*
@ -1553,14 +1466,12 @@ static void wa_xfer_result_cb(struct urb *urb)
struct wa_xfer *xfer;
u8 usb_status;
d_fnstart(3, dev, "(%p)\n", wa);
BUG_ON(wa->dti_urb != urb);
switch (wa->dti_urb->status) {
case 0:
/* We have a xfer result buffer; check it */
d_printf(2, dev, "DTI: xfer result %d bytes at %p\n",
urb->actual_length, urb->transfer_buffer);
d_dump(3, dev, urb->transfer_buffer, urb->actual_length);
dev_dbg(dev, "DTI: xfer result %d bytes at %p\n",
urb->actual_length, urb->transfer_buffer);
if (wa->dti_urb->actual_length != sizeof(*xfer_result)) {
dev_err(dev, "DTI Error: xfer result--bad size "
"xfer result (%d bytes vs %zu needed)\n",
@ -1622,7 +1533,6 @@ static void wa_xfer_result_cb(struct urb *urb)
wa_reset_all(wa);
}
out:
d_fnend(3, dev, "(%p) = void\n", wa);
return;
}
@ -1653,7 +1563,6 @@ void wa_handle_notif_xfer(struct wahc *wa, struct wa_notif_hdr *notif_hdr)
struct wa_notif_xfer *notif_xfer;
const struct usb_endpoint_descriptor *dti_epd = wa->dti_epd;
d_fnstart(4, dev, "(%p, %p)\n", wa, notif_hdr);
notif_xfer = container_of(notif_hdr, struct wa_notif_xfer, hdr);
BUG_ON(notif_hdr->bNotifyType != WA_NOTIF_TRANSFER);
@ -1693,7 +1602,6 @@ void wa_handle_notif_xfer(struct wahc *wa, struct wa_notif_hdr *notif_hdr)
goto error_dti_urb_submit;
}
out:
d_fnend(4, dev, "(%p, %p) = void\n", wa, notif_hdr);
return;
error_dti_urb_submit:
@ -1704,6 +1612,4 @@ void wa_handle_notif_xfer(struct wahc *wa, struct wa_notif_hdr *notif_hdr)
error_dti_urb_alloc:
error:
wa_reset_all(wa);
d_fnend(4, dev, "(%p, %p) = void\n", wa, notif_hdr);
return;
}

36
drivers/usb/wusbcore/wusbhc.h
View File

@ -64,6 +64,13 @@
#include <linux/uwb.h>
#include <linux/usb/wusb.h>
/*
* Time from a WUSB channel stop request to the last transmitted MMC.
*
* This needs to be > 4.096 ms in case no MMCs can be transmitted in
* zone 0.
*/
#define WUSB_CHANNEL_STOP_DELAY_MS 8
/**
* Wireless USB device
@ -147,7 +154,6 @@ struct wusb_port {
u16 status;
u16 change;
struct wusb_dev *wusb_dev; /* connected device's info */
unsigned reset_count;
u32 ptk_tkid;
};
@ -198,21 +204,18 @@ struct wusb_port {
* @mmcies_max Max number of Information Elements this HC can send
* in its MMC. Read-only.
*
* @start Start the WUSB channel.
*
* @stop Stop the WUSB channel after the specified number of
* milliseconds. Channel Stop IEs should be transmitted
* as required by [WUSB] 4.16.2.1.
*
* @mmcie_add HC specific operation (WHCI or HWA) for adding an
* MMCIE.
*
* @mmcie_rm HC specific operation (WHCI or HWA) for removing an
* MMCIE.
*
* @enc_types Array which describes the encryptions methods
* supported by the host as described in WUSB1.0 --
* one entry per supported method. As of WUSB1.0 there
* is only four methods, we make space for eight just in
* case they decide to add some more (and pray they do
* it in sequential order). if 'enc_types[enc_method]
* != 0', then it is supported by the host. enc_method
* is USB_ENC_TYPE*.
*
* @set_ptk: Set the PTK and enable encryption for a device. Or, if
* the supplied key is NULL, disable encryption for that
* device.
@ -249,7 +252,8 @@ struct wusbhc {
struct uwb_pal pal;
unsigned trust_timeout; /* in jiffies */
struct wuie_host_info *wuie_host_info; /* Includes CHID */
struct wusb_ckhdid chid;
struct wuie_host_info *wuie_host_info;
struct mutex mutex; /* locks everything else */
u16 cluster_id; /* Wireless USB Cluster ID */
@ -269,7 +273,7 @@ struct wusbhc {
u8 mmcies_max;
/* FIXME: make wusbhc_ops? */
int (*start)(struct wusbhc *wusbhc);
void (*stop)(struct wusbhc *wusbhc);
void (*stop)(struct wusbhc *wusbhc, int delay);
int (*mmcie_add)(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
u8 handle, struct wuie_hdr *wuie);
int (*mmcie_rm)(struct wusbhc *wusbhc, u8 handle);
@ -373,20 +377,17 @@ static inline void wusbhc_put(struct wusbhc *wusbhc)
usb_put_hcd(&wusbhc->usb_hcd);
}
int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid);
int wusbhc_start(struct wusbhc *wusbhc);
void wusbhc_stop(struct wusbhc *wusbhc);
extern int wusbhc_chid_set(struct wusbhc *, const struct wusb_ckhdid *);
/* Device connect handling */
extern int wusbhc_devconnect_create(struct wusbhc *);
extern void wusbhc_devconnect_destroy(struct wusbhc *);
extern int wusbhc_devconnect_start(struct wusbhc *wusbhc,
const struct wusb_ckhdid *chid);
extern int wusbhc_devconnect_start(struct wusbhc *wusbhc);
extern void wusbhc_devconnect_stop(struct wusbhc *wusbhc);
extern int wusbhc_devconnect_auth(struct wusbhc *, u8);
extern void wusbhc_handle_dn(struct wusbhc *, u8 srcaddr,
struct wusb_dn_hdr *dn_hdr, size_t size);
extern int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port);
extern void __wusbhc_dev_disable(struct wusbhc *wusbhc, u8 port);
extern int wusb_usb_ncb(struct notifier_block *nb, unsigned long val,
void *priv);
@ -432,6 +433,7 @@ extern void wusb_dev_sec_rm(struct wusb_dev *) ;
extern int wusb_dev_4way_handshake(struct wusbhc *, struct wusb_dev *,
struct wusb_ckhdid *ck);
void wusbhc_gtk_rekey(struct wusbhc *wusbhc);
int wusb_dev_update_address(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev);
/* WUSB Cluster ID handling */

3
drivers/uwb/Makefile
View File

@ -6,6 +6,7 @@ obj-$(CONFIG_UWB_I1480U) += i1480/
uwb-objs := \
address.o \
allocator.o \
beacon.o \
driver.o \
drp.o \
@ -13,10 +14,12 @@ uwb-objs := \
drp-ie.o \
est.o \
ie.o \
ie-rcv.o \
lc-dev.o \
lc-rc.o \
neh.o \
pal.o \
radio.o \
reset.o \
rsv.o \
scan.o \

2
drivers/uwb/address.c
View File

@ -28,7 +28,7 @@
#include <linux/device.h>
#include <linux/random.h>
#include <linux/etherdevice.h>
#include <linux/uwb/debug.h>
#include "uwb-internal.h"

386
drivers/uwb/allocator.c Normal file
View File

@ -0,0 +1,386 @@
/*
* UWB reservation management.
*
* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/uwb.h>
#include "uwb-internal.h"
static void uwb_rsv_fill_column_alloc(struct uwb_rsv_alloc_info *ai)
{
int col, mas, safe_mas, unsafe_mas;
unsigned char *bm = ai->bm;
struct uwb_rsv_col_info *ci = ai->ci;
unsigned char c;
for (col = ci->csi.start_col; col < UWB_NUM_ZONES; col += ci->csi.interval) {
safe_mas = ci->csi.safe_mas_per_col;
unsafe_mas = ci->csi.unsafe_mas_per_col;
for (mas = 0; mas < UWB_MAS_PER_ZONE; mas++ ) {
if (bm[col * UWB_MAS_PER_ZONE + mas] == 0) {
if (safe_mas > 0) {
safe_mas--;
c = UWB_RSV_MAS_SAFE;
} else if (unsafe_mas > 0) {
unsafe_mas--;
c = UWB_RSV_MAS_UNSAFE;
} else {
break;
}
bm[col * UWB_MAS_PER_ZONE + mas] = c;
}
}
}
}
static void uwb_rsv_fill_row_alloc(struct uwb_rsv_alloc_info *ai)
{
int mas, col, rows;
unsigned char *bm = ai->bm;
struct uwb_rsv_row_info *ri = &ai->ri;
unsigned char c;
rows = 1;
c = UWB_RSV_MAS_SAFE;
for (mas = UWB_MAS_PER_ZONE - 1; mas >= 0; mas--) {
if (ri->avail[mas] == 1) {
if (rows > ri->used_rows) {
break;
} else if (rows > 7) {
c = UWB_RSV_MAS_UNSAFE;
}
for (col = 0; col < UWB_NUM_ZONES; col++) {
if (bm[col * UWB_NUM_ZONES + mas] != UWB_RSV_MAS_NOT_AVAIL) {
bm[col * UWB_NUM_ZONES + mas] = c;
if(c == UWB_RSV_MAS_SAFE)
ai->safe_allocated_mases++;
else
ai->unsafe_allocated_mases++;
}
}
rows++;
}
}
ai->total_allocated_mases = ai->safe_allocated_mases + ai->unsafe_allocated_mases;
}
/*
* Find the best column set for a given availability, interval, num safe mas and
* num unsafe mas.
*
* The different sets are tried in order as shown below, depending on the interval.
*
* interval = 16
* deep = 0
* set 1 -> { 8 }
* deep = 1
* set 1 -> { 4 }
* set 2 -> { 12 }
* deep = 2
* set 1 -> { 2 }
* set 2 -> { 6 }
* set 3 -> { 10 }
* set 4 -> { 14 }
* deep = 3
* set 1 -> { 1 }
* set 2 -> { 3 }
* set 3 -> { 5 }
* set 4 -> { 7 }
* set 5 -> { 9 }
* set 6 -> { 11 }
* set 7 -> { 13 }
* set 8 -> { 15 }
*
* interval = 8
* deep = 0
* set 1 -> { 4 12 }
* deep = 1
* set 1 -> { 2 10 }
* set 2 -> { 6 14 }
* deep = 2
* set 1 -> { 1 9 }
* set 2 -> { 3 11 }
* set 3 -> { 5 13 }
* set 4 -> { 7 15 }
*
* interval = 4
* deep = 0
* set 1 -> { 2 6 10 14 }
* deep = 1
* set 1 -> { 1 5 9 13 }
* set 2 -> { 3 7 11 15 }
*
* interval = 2
* deep = 0
* set 1 -> { 1 3 5 7 9 11 13 15 }
*/
static int uwb_rsv_find_best_column_set(struct uwb_rsv_alloc_info *ai, int interval,
int num_safe_mas, int num_unsafe_mas)
{
struct uwb_rsv_col_info *ci = ai->ci;
struct uwb_rsv_col_set_info *csi = &ci->csi;
struct uwb_rsv_col_set_info tmp_csi;
int deep, set, col, start_col_deep, col_start_set;
int start_col, max_mas_in_set, lowest_max_mas_in_deep;
int n_mas;
int found = UWB_RSV_ALLOC_NOT_FOUND;
tmp_csi.start_col = 0;
start_col_deep = interval;
n_mas = num_unsafe_mas + num_safe_mas;
for (deep = 0; ((interval >> deep) & 0x1) == 0; deep++) {
start_col_deep /= 2;
col_start_set = 0;
lowest_max_mas_in_deep = UWB_MAS_PER_ZONE;
for (set = 1; set <= (1 << deep); set++) {
max_mas_in_set = 0;
start_col = start_col_deep + col_start_set;
for (col = start_col; col < UWB_NUM_ZONES; col += interval) {
if (ci[col].max_avail_safe >= num_safe_mas &&
ci[col].max_avail_unsafe >= n_mas) {
if (ci[col].highest_mas[n_mas] > max_mas_in_set)
max_mas_in_set = ci[col].highest_mas[n_mas];
} else {
max_mas_in_set = 0;
break;
}
}
if ((lowest_max_mas_in_deep > max_mas_in_set) && max_mas_in_set) {
lowest_max_mas_in_deep = max_mas_in_set;
tmp_csi.start_col = start_col;
}
col_start_set += (interval >> deep);
}
if (lowest_max_mas_in_deep < 8) {
csi->start_col = tmp_csi.start_col;
found = UWB_RSV_ALLOC_FOUND;
break;
} else if ((lowest_max_mas_in_deep > 8) &&
(lowest_max_mas_in_deep != UWB_MAS_PER_ZONE) &&
(found == UWB_RSV_ALLOC_NOT_FOUND)) {
csi->start_col = tmp_csi.start_col;
found = UWB_RSV_ALLOC_FOUND;
}
}
if (found == UWB_RSV_ALLOC_FOUND) {
csi->interval = interval;
csi->safe_mas_per_col = num_safe_mas;
csi->unsafe_mas_per_col = num_unsafe_mas;
ai->safe_allocated_mases = (UWB_NUM_ZONES / interval) * num_safe_mas;
ai->unsafe_allocated_mases = (UWB_NUM_ZONES / interval) * num_unsafe_mas;
ai->total_allocated_mases = ai->safe_allocated_mases + ai->unsafe_allocated_mases;
ai->interval = interval;
}
return found;
}
static void get_row_descriptors(struct uwb_rsv_alloc_info *ai)
{
unsigned char *bm = ai->bm;
struct uwb_rsv_row_info *ri = &ai->ri;
int col, mas;
ri->free_rows = 16;
for (mas = 0; mas < UWB_MAS_PER_ZONE; mas ++) {
ri->avail[mas] = 1;
for (col = 1; col < UWB_NUM_ZONES; col++) {
if (bm[col * UWB_NUM_ZONES + mas] == UWB_RSV_MAS_NOT_AVAIL) {
ri->free_rows--;
ri->avail[mas]=0;
break;
}
}
}
}
static void uwb_rsv_fill_column_info(unsigned char *bm, int column, struct uwb_rsv_col_info *rci)
{
int mas;
int block_count = 0, start_block = 0;
int previous_avail = 0;
int available = 0;
int safe_mas_in_row[UWB_MAS_PER_ZONE] = {
8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1,
};
rci->max_avail_safe = 0;
for (mas = 0; mas < UWB_MAS_PER_ZONE; mas ++) {
if (!bm[column * UWB_NUM_ZONES + mas]) {
available++;
rci->max_avail_unsafe = available;
rci->highest_mas[available] = mas;
if (previous_avail) {
block_count++;
if ((block_count > safe_mas_in_row[start_block]) &&
(!rci->max_avail_safe))
rci->max_avail_safe = available - 1;
} else {
previous_avail = 1;
start_block = mas;
block_count = 1;
}
} else {
previous_avail = 0;
}
}
if (!rci->max_avail_safe)
rci->max_avail_safe = rci->max_avail_unsafe;
}
static void get_column_descriptors(struct uwb_rsv_alloc_info *ai)
{
unsigned char *bm = ai->bm;
struct uwb_rsv_col_info *ci = ai->ci;
int col;
for (col = 1; col < UWB_NUM_ZONES; col++) {
uwb_rsv_fill_column_info(bm, col, &ci[col]);
}
}
static int uwb_rsv_find_best_row_alloc(struct uwb_rsv_alloc_info *ai)
{
int n_rows;
int max_rows = ai->max_mas / UWB_USABLE_MAS_PER_ROW;
int min_rows = ai->min_mas / UWB_USABLE_MAS_PER_ROW;
if (ai->min_mas % UWB_USABLE_MAS_PER_ROW)
min_rows++;
for (n_rows = max_rows; n_rows >= min_rows; n_rows--) {
if (n_rows <= ai->ri.free_rows) {
ai->ri.used_rows = n_rows;
ai->interval = 1; /* row reservation */
uwb_rsv_fill_row_alloc(ai);
return UWB_RSV_ALLOC_FOUND;
}
}
return UWB_RSV_ALLOC_NOT_FOUND;
}
static int uwb_rsv_find_best_col_alloc(struct uwb_rsv_alloc_info *ai, int interval)
{
int n_safe, n_unsafe, n_mas;
int n_column = UWB_NUM_ZONES / interval;
int max_per_zone = ai->max_mas / n_column;
int min_per_zone = ai->min_mas / n_column;
if (ai->min_mas % n_column)
min_per_zone++;
if (min_per_zone > UWB_MAS_PER_ZONE) {
return UWB_RSV_ALLOC_NOT_FOUND;
}
if (max_per_zone > UWB_MAS_PER_ZONE) {
max_per_zone = UWB_MAS_PER_ZONE;
}
for (n_mas = max_per_zone; n_mas >= min_per_zone; n_mas--) {
if (uwb_rsv_find_best_column_set(ai, interval, 0, n_mas) == UWB_RSV_ALLOC_NOT_FOUND)
continue;
for (n_safe = n_mas; n_safe >= 0; n_safe--) {
n_unsafe = n_mas - n_safe;
if (uwb_rsv_find_best_column_set(ai, interval, n_safe, n_unsafe) == UWB_RSV_ALLOC_FOUND) {
uwb_rsv_fill_column_alloc(ai);
return UWB_RSV_ALLOC_FOUND;
}
}
}
return UWB_RSV_ALLOC_NOT_FOUND;
}
int uwb_rsv_find_best_allocation(struct uwb_rsv *rsv, struct uwb_mas_bm *available,
struct uwb_mas_bm *result)
{
struct uwb_rsv_alloc_info *ai;
int interval;
int bit_index;
ai = kzalloc(sizeof(struct uwb_rsv_alloc_info), GFP_KERNEL);
ai->min_mas = rsv->min_mas;
ai->max_mas = rsv->max_mas;
ai->max_interval = rsv->max_interval;
/* fill the not available vector from the available bm */
for (bit_index = 0; bit_index < UWB_NUM_MAS; bit_index++) {
if (!test_bit(bit_index, available->bm))
ai->bm[bit_index] = UWB_RSV_MAS_NOT_AVAIL;
}
if (ai->max_interval == 1) {
get_row_descriptors(ai);
if (uwb_rsv_find_best_row_alloc(ai) == UWB_RSV_ALLOC_FOUND)
goto alloc_found;
else
goto alloc_not_found;
}
get_column_descriptors(ai);
for (interval = 16; interval >= 2; interval>>=1) {
if (interval > ai->max_interval)
continue;
if (uwb_rsv_find_best_col_alloc(ai, interval) == UWB_RSV_ALLOC_FOUND)
goto alloc_found;
}
/* try row reservation if no column is found */
get_row_descriptors(ai);
if (uwb_rsv_find_best_row_alloc(ai) == UWB_RSV_ALLOC_FOUND)
goto alloc_found;
else
goto alloc_not_found;
alloc_found:
bitmap_zero(result->bm, UWB_NUM_MAS);
bitmap_zero(result->unsafe_bm, UWB_NUM_MAS);
/* fill the safe and unsafe bitmaps */
for (bit_index = 0; bit_index < UWB_NUM_MAS; bit_index++) {
if (ai->bm[bit_index] == UWB_RSV_MAS_SAFE)
set_bit(bit_index, result->bm);
else if (ai->bm[bit_index] == UWB_RSV_MAS_UNSAFE)
set_bit(bit_index, result->unsafe_bm);
}
bitmap_or(result->bm, result->bm, result->unsafe_bm, UWB_NUM_MAS);
result->safe = ai->safe_allocated_mases;
result->unsafe = ai->unsafe_allocated_mases;
kfree(ai);
return UWB_RSV_ALLOC_FOUND;
alloc_not_found:
kfree(ai);
return UWB_RSV_ALLOC_NOT_FOUND;
}

134
drivers/uwb/beacon.c
View File

@ -22,19 +22,16 @@
*
* FIXME: docs
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/kdev_t.h>
#include "uwb-internal.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/** Start Beaconing command structure */
/* Start Beaconing command structure */
struct uwb_rc_cmd_start_beacon {
struct uwb_rccb rccb;
__le16 wBPSTOffset;
@ -119,7 +116,6 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset)
int result;
struct device *dev = &rc->uwb_dev.dev;
mutex_lock(&rc->uwb_dev.mutex);
if (channel < 0)
channel = -1;
if (channel == -1)
@ -128,7 +124,7 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset)
/* channel >= 0...dah */
result = uwb_rc_start_beacon(rc, bpst_offset, channel);
if (result < 0)
goto out_up;
return result;
if (le16_to_cpu(rc->ies->wIELength) > 0) {
result = uwb_rc_set_ie(rc, rc->ies);
if (result < 0) {
@ -137,19 +133,12 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset)
result = uwb_rc_stop_beacon(rc);
channel = -1;
bpst_offset = 0;
} else
result = 0;
}
}
}
if (result < 0)
goto out_up;
rc->beaconing = channel;
uwb_notify(rc, NULL, uwb_bg_joined(rc) ? UWB_NOTIF_BG_JOIN : UWB_NOTIF_BG_LEAVE);
out_up:
mutex_unlock(&rc->uwb_dev.mutex);
if (result >= 0)
rc->beaconing = channel;
return result;
}
@ -168,12 +157,6 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset)
* FIXME: use something faster for search than a list
*/
struct uwb_beca uwb_beca = {
.list = LIST_HEAD_INIT(uwb_beca.list),
.mutex = __MUTEX_INITIALIZER(uwb_beca.mutex)
};
void uwb_bce_kfree(struct kref *_bce)
{
struct uwb_beca_e *bce = container_of(_bce, struct uwb_beca_e, refcnt);
@ -185,13 +168,11 @@ void uwb_bce_kfree(struct kref *_bce)
/* Find a beacon by dev addr in the cache */
static
struct uwb_beca_e *__uwb_beca_find_bydev(const struct uwb_dev_addr *dev_addr)
struct uwb_beca_e *__uwb_beca_find_bydev(struct uwb_rc *rc,
const struct uwb_dev_addr *dev_addr)
{
struct uwb_beca_e *bce, *next;
list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
d_printf(6, NULL, "looking for addr %02x:%02x in %02x:%02x\n",
dev_addr->data[0], dev_addr->data[1],
bce->dev_addr.data[0], bce->dev_addr.data[1]);
list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) {
if (!memcmp(&bce->dev_addr, dev_addr, sizeof(bce->dev_addr)))
goto out;
}
@ -202,10 +183,11 @@ struct uwb_beca_e *__uwb_beca_find_bydev(const struct uwb_dev_addr *dev_addr)
/* Find a beacon by dev addr in the cache */
static
struct uwb_beca_e *__uwb_beca_find_bymac(const struct uwb_mac_addr *mac_addr)
struct uwb_beca_e *__uwb_beca_find_bymac(struct uwb_rc *rc,
const struct uwb_mac_addr *mac_addr)
{
struct uwb_beca_e *bce, *next;
list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) {
if (!memcmp(bce->mac_addr, mac_addr->data,
sizeof(struct uwb_mac_addr)))
goto out;
@ -229,11 +211,11 @@ struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
struct uwb_dev *found = NULL;
struct uwb_beca_e *bce;
mutex_lock(&uwb_beca.mutex);
bce = __uwb_beca_find_bydev(devaddr);
mutex_lock(&rc->uwb_beca.mutex);
bce = __uwb_beca_find_bydev(rc, devaddr);
if (bce)
found = uwb_dev_try_get(rc, bce->uwb_dev);
mutex_unlock(&uwb_beca.mutex);
mutex_unlock(&rc->uwb_beca.mutex);
return found;
}
@ -249,11 +231,11 @@ struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc,
struct uwb_dev *found = NULL;
struct uwb_beca_e *bce;
mutex_lock(&uwb_beca.mutex);
bce = __uwb_beca_find_bymac(macaddr);
mutex_lock(&rc->uwb_beca.mutex);
bce = __uwb_beca_find_bymac(rc, macaddr);
if (bce)
found = uwb_dev_try_get(rc, bce->uwb_dev);
mutex_unlock(&uwb_beca.mutex);
mutex_unlock(&rc->uwb_beca.mutex);
return found;
}
@ -274,7 +256,9 @@ static void uwb_beca_e_init(struct uwb_beca_e *bce)
* @bf: Beacon frame (part of b, really)
* @ts_jiffies: Timestamp (in jiffies) when the beacon was received
*/
struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be,
static
struct uwb_beca_e *__uwb_beca_add(struct uwb_rc *rc,
struct uwb_rc_evt_beacon *be,
struct uwb_beacon_frame *bf,
unsigned long ts_jiffies)
{
@ -286,7 +270,7 @@ struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be,
uwb_beca_e_init(bce);
bce->ts_jiffies = ts_jiffies;
bce->uwb_dev = NULL;
list_add(&bce->node, &uwb_beca.list);
list_add(&bce->node, &rc->uwb_beca.list);
return bce;
}
@ -295,33 +279,32 @@ struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be,
*
* Remove associated devicest too.
*/
void uwb_beca_purge(void)
void uwb_beca_purge(struct uwb_rc *rc)
{
struct uwb_beca_e *bce, *next;
unsigned long expires;
mutex_lock(&uwb_beca.mutex);
list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
mutex_lock(&rc->uwb_beca.mutex);
list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) {
expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms);
if (time_after(jiffies, expires)) {
uwbd_dev_offair(bce);
list_del(&bce->node);
uwb_bce_put(bce);
}
}
mutex_unlock(&uwb_beca.mutex);
mutex_unlock(&rc->uwb_beca.mutex);
}
/* Clean up the whole beacon cache. Called on shutdown */
void uwb_beca_release(void)
void uwb_beca_release(struct uwb_rc *rc)
{
struct uwb_beca_e *bce, *next;
mutex_lock(&uwb_beca.mutex);
list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
mutex_lock(&rc->uwb_beca.mutex);
list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) {
list_del(&bce->node);
uwb_bce_put(bce);
}
mutex_unlock(&uwb_beca.mutex);
mutex_unlock(&rc->uwb_beca.mutex);
}
static void uwb_beacon_print(struct uwb_rc *rc, struct uwb_rc_evt_beacon *be,
@ -349,22 +332,22 @@ ssize_t uwb_bce_print_IEs(struct uwb_dev *uwb_dev, struct uwb_beca_e *bce,
ssize_t result = 0;
struct uwb_rc_evt_beacon *be;
struct uwb_beacon_frame *bf;
struct uwb_buf_ctx ctx = {
.buf = buf,
.bytes = 0,
.size = size
};
int ies_len;
struct uwb_ie_hdr *ies;
mutex_lock(&bce->mutex);
be = bce->be;
if (be == NULL)
goto out;
bf = (void *) be->BeaconInfo;
uwb_ie_for_each(uwb_dev, uwb_ie_dump_hex, &ctx,
bf->IEData, be->wBeaconInfoLength - sizeof(*bf));
result = ctx.bytes;
out:
if (be) {
bf = (struct uwb_beacon_frame *)bce->be->BeaconInfo;
ies_len = be->wBeaconInfoLength - sizeof(struct uwb_beacon_frame);
ies = (struct uwb_ie_hdr *)bf->IEData;
result = uwb_ie_dump_hex(ies, ies_len, buf, size);
}
mutex_unlock(&bce->mutex);
return result;
}
@ -437,18 +420,18 @@ int uwbd_evt_handle_rc_beacon(struct uwb_event *evt)
if (uwb_mac_addr_bcast(&bf->Device_Identifier))
return 0;
mutex_lock(&uwb_beca.mutex);
bce = __uwb_beca_find_bymac(&bf->Device_Identifier);
mutex_lock(&rc->uwb_beca.mutex);
bce = __uwb_beca_find_bymac(rc, &bf->Device_Identifier);
if (bce == NULL) {
/* Not in there, a new device is pinging */
uwb_beacon_print(evt->rc, be, bf);
bce = __uwb_beca_add(be, bf, evt->ts_jiffies);
bce = __uwb_beca_add(rc, be, bf, evt->ts_jiffies);
if (bce == NULL) {
mutex_unlock(&uwb_beca.mutex);
mutex_unlock(&rc->uwb_beca.mutex);
return -ENOMEM;
}
}
mutex_unlock(&uwb_beca.mutex);
mutex_unlock(&rc->uwb_beca.mutex);
mutex_lock(&bce->mutex);
/* purge old beacon data */
@ -588,19 +571,6 @@ int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *evt)
return result;
}
/**
* uwb_bg_joined - is the RC in a beacon group?
* @rc: the radio controller
*
* Returns true if the radio controller is in a beacon group (even if
* it's the sole member).
*/
int uwb_bg_joined(struct uwb_rc *rc)
{
return rc->beaconing != -1;
}
EXPORT_SYMBOL_GPL(uwb_bg_joined);
/*
* Print beaconing state.
*/
@ -619,9 +589,6 @@ static ssize_t uwb_rc_beacon_show(struct device *dev,
/*
* Start beaconing on the specified channel, or stop beaconing.
*
* The BPST offset of when to start searching for a beacon group to
* join may be specified.
*/
static ssize_t uwb_rc_beacon_store(struct device *dev,
struct device_attribute *attr,
@ -630,12 +597,11 @@ static ssize_t uwb_rc_beacon_store(struct device *dev,
struct uwb_dev *uwb_dev = to_uwb_dev(dev);
struct uwb_rc *rc = uwb_dev->rc;
int channel;
unsigned bpst_offset = 0;
ssize_t result = -EINVAL;
result = sscanf(buf, "%d %u\n", &channel, &bpst_offset);
result = sscanf(buf, "%d", &channel);
if (result >= 1)
result = uwb_rc_beacon(rc, channel, bpst_offset);
result = uwb_radio_force_channel(rc, channel);
return result < 0 ? result : size;
}

4
drivers/uwb/driver.c
View File

@ -53,7 +53,7 @@
#include <linux/err.h>
#include <linux/kdev_t.h>
#include <linux/random.h>
#include <linux/uwb/debug.h>
#include "uwb-internal.h"
@ -118,7 +118,6 @@ static int __init uwb_subsys_init(void)
result = class_register(&uwb_rc_class);
if (result < 0)
goto error_uwb_rc_class_register;
uwbd_start();
uwb_dbg_init();
return 0;
@ -132,7 +131,6 @@ module_init(uwb_subsys_init);
static void __exit uwb_subsys_exit(void)
{
uwb_dbg_exit();
uwbd_stop();
class_unregister(&uwb_rc_class);
uwb_est_destroy();
return;

4
drivers/uwb/drp-avail.c
View File

@ -58,7 +58,7 @@ void uwb_drp_avail_init(struct uwb_rc *rc)
*
* avail = global & local & pending
*/
static void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail)
void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail)
{
bitmap_and(avail->bm, rc->drp_avail.global, rc->drp_avail.local, UWB_NUM_MAS);
bitmap_and(avail->bm, avail->bm, rc->drp_avail.pending, UWB_NUM_MAS);
@ -105,6 +105,7 @@ void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas)
bitmap_or(rc->drp_avail.local, rc->drp_avail.local, mas->bm, UWB_NUM_MAS);
bitmap_or(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
rc->drp_avail.ie_valid = false;
uwb_rsv_handle_drp_avail_change(rc);
}
/**
@ -280,6 +281,7 @@ int uwbd_evt_handle_rc_drp_avail(struct uwb_event *evt)
mutex_lock(&rc->rsvs_mutex);
bitmap_copy(rc->drp_avail.global, bmp, UWB_NUM_MAS);
rc->drp_avail.ie_valid = false;
uwb_rsv_handle_drp_avail_change(rc);
mutex_unlock(&rc->rsvs_mutex);
uwb_rsv_sched_update(rc);

161
drivers/uwb/drp-ie.c
View File

@ -16,13 +16,102 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/random.h>
#include <linux/uwb.h>
#include "uwb-internal.h"
/*
* Return the reason code for a reservations's DRP IE.
*/
int uwb_rsv_reason_code(struct uwb_rsv *rsv)
{
static const int reason_codes[] = {
[UWB_RSV_STATE_O_INITIATED] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_O_PENDING] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_O_MODIFIED] = UWB_DRP_REASON_MODIFIED,
[UWB_RSV_STATE_O_ESTABLISHED] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_O_TO_BE_MOVED] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_O_MOVE_COMBINING] = UWB_DRP_REASON_MODIFIED,
[UWB_RSV_STATE_O_MOVE_REDUCING] = UWB_DRP_REASON_MODIFIED,
[UWB_RSV_STATE_O_MOVE_EXPANDING] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_T_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_T_CONFLICT] = UWB_DRP_REASON_CONFLICT,
[UWB_RSV_STATE_T_PENDING] = UWB_DRP_REASON_PENDING,
[UWB_RSV_STATE_T_DENIED] = UWB_DRP_REASON_DENIED,
[UWB_RSV_STATE_T_RESIZED] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT,
[UWB_RSV_STATE_T_EXPANDING_PENDING] = UWB_DRP_REASON_PENDING,
[UWB_RSV_STATE_T_EXPANDING_DENIED] = UWB_DRP_REASON_DENIED,
};
return reason_codes[rsv->state];
}
/*
* Return the reason code for a reservations's companion DRP IE .
*/
int uwb_rsv_companion_reason_code(struct uwb_rsv *rsv)
{
static const int companion_reason_codes[] = {
[UWB_RSV_STATE_O_MOVE_EXPANDING] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
[UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT,
[UWB_RSV_STATE_T_EXPANDING_PENDING] = UWB_DRP_REASON_PENDING,
[UWB_RSV_STATE_T_EXPANDING_DENIED] = UWB_DRP_REASON_DENIED,
};
return companion_reason_codes[rsv->state];
}
/*
* Return the status bit for a reservations's DRP IE.
*/
int uwb_rsv_status(struct uwb_rsv *rsv)
{
static const int statuses[] = {
[UWB_RSV_STATE_O_INITIATED] = 0,
[UWB_RSV_STATE_O_PENDING] = 0,
[UWB_RSV_STATE_O_MODIFIED] = 1,
[UWB_RSV_STATE_O_ESTABLISHED] = 1,
[UWB_RSV_STATE_O_TO_BE_MOVED] = 0,
[UWB_RSV_STATE_O_MOVE_COMBINING] = 1,
[UWB_RSV_STATE_O_MOVE_REDUCING] = 1,
[UWB_RSV_STATE_O_MOVE_EXPANDING] = 1,
[UWB_RSV_STATE_T_ACCEPTED] = 1,
[UWB_RSV_STATE_T_CONFLICT] = 0,
[UWB_RSV_STATE_T_PENDING] = 0,
[UWB_RSV_STATE_T_DENIED] = 0,
[UWB_RSV_STATE_T_RESIZED] = 1,
[UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1,
[UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 1,
[UWB_RSV_STATE_T_EXPANDING_PENDING] = 1,
[UWB_RSV_STATE_T_EXPANDING_DENIED] = 1,
};
return statuses[rsv->state];
}
/*
* Return the status bit for a reservations's companion DRP IE .
*/
int uwb_rsv_companion_status(struct uwb_rsv *rsv)
{
static const int companion_statuses[] = {
[UWB_RSV_STATE_O_MOVE_EXPANDING] = 0,
[UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1,
[UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 0,
[UWB_RSV_STATE_T_EXPANDING_PENDING] = 0,
[UWB_RSV_STATE_T_EXPANDING_DENIED] = 0,
};
return companion_statuses[rsv->state];
}
/*
* Allocate a DRP IE.
*
@ -34,16 +123,12 @@
static struct uwb_ie_drp *uwb_drp_ie_alloc(void)
{
struct uwb_ie_drp *drp_ie;
unsigned tiebreaker;
drp_ie = kzalloc(sizeof(struct uwb_ie_drp) +
UWB_NUM_ZONES * sizeof(struct uwb_drp_alloc),
GFP_KERNEL);
if (drp_ie) {
drp_ie->hdr.element_id = UWB_IE_DRP;
get_random_bytes(&tiebreaker, sizeof(unsigned));
uwb_ie_drp_set_tiebreaker(drp_ie, tiebreaker & 1);
}
return drp_ie;
}
@ -104,43 +189,17 @@ static void uwb_drp_ie_from_bm(struct uwb_ie_drp *drp_ie,
*/
int uwb_drp_ie_update(struct uwb_rsv *rsv)
{
struct device *dev = &rsv->rc->uwb_dev.dev;
struct uwb_ie_drp *drp_ie;
int reason_code, status;
struct uwb_rsv_move *mv;
int unsafe;
switch (rsv->state) {
case UWB_RSV_STATE_NONE:
if (rsv->state == UWB_RSV_STATE_NONE) {
kfree(rsv->drp_ie);
rsv->drp_ie = NULL;
return 0;
case UWB_RSV_STATE_O_INITIATED:
reason_code = UWB_DRP_REASON_ACCEPTED;
status = 0;
break;
case UWB_RSV_STATE_O_PENDING:
reason_code = UWB_DRP_REASON_ACCEPTED;
status = 0;
break;
case UWB_RSV_STATE_O_MODIFIED:
reason_code = UWB_DRP_REASON_MODIFIED;
status = 1;
break;
case UWB_RSV_STATE_O_ESTABLISHED:
reason_code = UWB_DRP_REASON_ACCEPTED;
status = 1;
break;
case UWB_RSV_STATE_T_ACCEPTED:
reason_code = UWB_DRP_REASON_ACCEPTED;
status = 1;
break;
case UWB_RSV_STATE_T_DENIED:
reason_code = UWB_DRP_REASON_DENIED;
status = 0;
break;
default:
dev_dbg(dev, "rsv with unhandled state (%d)\n", rsv->state);
return -EINVAL;
}
unsafe = rsv->mas.unsafe ? 1 : 0;
if (rsv->drp_ie == NULL) {
rsv->drp_ie = uwb_drp_ie_alloc();
@ -149,9 +208,11 @@ int uwb_drp_ie_update(struct uwb_rsv *rsv)
}
drp_ie = rsv->drp_ie;
uwb_ie_drp_set_unsafe(drp_ie, unsafe);
uwb_ie_drp_set_tiebreaker(drp_ie, rsv->tiebreaker);
uwb_ie_drp_set_owner(drp_ie, uwb_rsv_is_owner(rsv));
uwb_ie_drp_set_status(drp_ie, status);
uwb_ie_drp_set_reason_code(drp_ie, reason_code);
uwb_ie_drp_set_status(drp_ie, uwb_rsv_status(rsv));
uwb_ie_drp_set_reason_code(drp_ie, uwb_rsv_reason_code(rsv));
uwb_ie_drp_set_stream_index(drp_ie, rsv->stream);
uwb_ie_drp_set_type(drp_ie, rsv->type);
@ -169,6 +230,27 @@ int uwb_drp_ie_update(struct uwb_rsv *rsv)
uwb_drp_ie_from_bm(drp_ie, &rsv->mas);
if (uwb_rsv_has_two_drp_ies(rsv)) {
mv = &rsv->mv;
if (mv->companion_drp_ie == NULL) {
mv->companion_drp_ie = uwb_drp_ie_alloc();
if (mv->companion_drp_ie == NULL)
return -ENOMEM;
}
drp_ie = mv->companion_drp_ie;
/* keep all the same configuration of the main drp_ie */
memcpy(drp_ie, rsv->drp_ie, sizeof(struct uwb_ie_drp));
/* FIXME: handle properly the unsafe bit */
uwb_ie_drp_set_unsafe(drp_ie, 1);
uwb_ie_drp_set_status(drp_ie, uwb_rsv_companion_status(rsv));
uwb_ie_drp_set_reason_code(drp_ie, uwb_rsv_companion_reason_code(rsv));
uwb_drp_ie_from_bm(drp_ie, &mv->companion_mas);
}
rsv->ie_valid = true;
return 0;
}
@ -219,6 +301,8 @@ void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie)
u8 zone;
u16 zone_mask;
bitmap_zero(bm->bm, UWB_NUM_MAS);
for (cnt = 0; cnt < numallocs; cnt++) {
alloc = &drp_ie->allocs[cnt];
zone_bm = le16_to_cpu(alloc->zone_bm);
@ -230,3 +314,4 @@ void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie)
}
}
}

707
drivers/uwb/drp.c
View File

@ -23,6 +23,59 @@
#include <linux/delay.h>
#include "uwb-internal.h"
/* DRP Conflict Actions ([ECMA-368 2nd Edition] 17.4.6) */
enum uwb_drp_conflict_action {
/* Reservation is mantained, no action needed */
UWB_DRP_CONFLICT_MANTAIN = 0,
/* the device shall not transmit frames in conflicting MASs in
* the following superframe. If the device is the reservation
* target, it shall also set the Reason Code in its DRP IE to
* Conflict in its beacon in the following superframe.
*/
UWB_DRP_CONFLICT_ACT1,
/* the device shall not set the Reservation Status bit to ONE
* and shall not transmit frames in conflicting MASs. If the
* device is the reservation target, it shall also set the
* Reason Code in its DRP IE to Conflict.
*/
UWB_DRP_CONFLICT_ACT2,
/* the device shall not transmit frames in conflicting MASs in
* the following superframe. It shall remove the conflicting
* MASs from the reservation or set the Reservation Status to
* ZERO in its beacon in the following superframe. If the
* device is the reservation target, it shall also set the
* Reason Code in its DRP IE to Conflict.
*/
UWB_DRP_CONFLICT_ACT3,
};
static void uwb_rc_set_drp_cmd_done(struct uwb_rc *rc, void *arg,
struct uwb_rceb *reply, ssize_t reply_size)
{
struct uwb_rc_evt_set_drp_ie *r = (struct uwb_rc_evt_set_drp_ie *)reply;
if (r != NULL) {
if (r->bResultCode != UWB_RC_RES_SUCCESS)
dev_err(&rc->uwb_dev.dev, "SET-DRP-IE failed: %s (%d)\n",
uwb_rc_strerror(r->bResultCode), r->bResultCode);
} else
dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: timeout\n");
spin_lock(&rc->rsvs_lock);
if (rc->set_drp_ie_pending > 1) {
rc->set_drp_ie_pending = 0;
uwb_rsv_queue_update(rc);
} else {
rc->set_drp_ie_pending = 0;
}
spin_unlock(&rc->rsvs_lock);
}
/**
* Construct and send the SET DRP IE
*
@ -37,28 +90,32 @@
*
* A DRP Availability IE is appended.
*
* rc->uwb_dev.mutex is held
* rc->rsvs_mutex is held
*
* FIXME We currently ignore the returned value indicating the remaining space
* in beacon. This could be used to deny reservation requests earlier if
* determined that they would cause the beacon space to be exceeded.
*/
static
int uwb_rc_gen_send_drp_ie(struct uwb_rc *rc)
int uwb_rc_send_all_drp_ie(struct uwb_rc *rc)
{
int result;
struct device *dev = &rc->uwb_dev.dev;
struct uwb_rc_cmd_set_drp_ie *cmd;
struct uwb_rc_evt_set_drp_ie reply;
struct uwb_rsv *rsv;
struct uwb_rsv_move *mv;
int num_bytes = 0;
u8 *IEDataptr;
result = -ENOMEM;
/* First traverse all reservations to determine memory needed. */
list_for_each_entry(rsv, &rc->reservations, rc_node) {
if (rsv->drp_ie != NULL)
if (rsv->drp_ie != NULL) {
num_bytes += rsv->drp_ie->hdr.length + 2;
if (uwb_rsv_has_two_drp_ies(rsv) &&
(rsv->mv.companion_drp_ie != NULL)) {
mv = &rsv->mv;
num_bytes += mv->companion_drp_ie->hdr.length + 2;
}
}
}
num_bytes += sizeof(rc->drp_avail.ie);
cmd = kzalloc(sizeof(*cmd) + num_bytes, GFP_KERNEL);
@ -69,128 +126,322 @@ int uwb_rc_gen_send_drp_ie(struct uwb_rc *rc)
cmd->wIELength = num_bytes;
IEDataptr = (u8 *)&cmd->IEData[0];
/* FIXME: DRV avail IE is not always needed */
/* put DRP avail IE first */
memcpy(IEDataptr, &rc->drp_avail.ie, sizeof(rc->drp_avail.ie));
IEDataptr += sizeof(struct uwb_ie_drp_avail);
/* Next traverse all reservations to place IEs in allocated memory. */
list_for_each_entry(rsv, &rc->reservations, rc_node) {
if (rsv->drp_ie != NULL) {
memcpy(IEDataptr, rsv->drp_ie,
rsv->drp_ie->hdr.length + 2);
IEDataptr += rsv->drp_ie->hdr.length + 2;
if (uwb_rsv_has_two_drp_ies(rsv) &&
(rsv->mv.companion_drp_ie != NULL)) {
mv = &rsv->mv;
memcpy(IEDataptr, mv->companion_drp_ie,
mv->companion_drp_ie->hdr.length + 2);
IEDataptr += mv->companion_drp_ie->hdr.length + 2;
}
}
}
memcpy(IEDataptr, &rc->drp_avail.ie, sizeof(rc->drp_avail.ie));
reply.rceb.bEventType = UWB_RC_CET_GENERAL;
reply.rceb.wEvent = UWB_RC_CMD_SET_DRP_IE;
result = uwb_rc_cmd(rc, "SET-DRP-IE", &cmd->rccb,
sizeof(*cmd) + num_bytes, &reply.rceb,
sizeof(reply));
if (result < 0)
goto error_cmd;
result = le16_to_cpu(reply.wRemainingSpace);
if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: command execution "
"failed: %s (%d). RemainingSpace in beacon "
"= %d\n", uwb_rc_strerror(reply.bResultCode),
reply.bResultCode, result);
result = -EIO;
} else {
dev_dbg(dev, "SET-DRP-IE sent. RemainingSpace in beacon "
"= %d.\n", result);
result = 0;
}
error_cmd:
result = uwb_rc_cmd_async(rc, "SET-DRP-IE", &cmd->rccb, sizeof(*cmd) + num_bytes,
UWB_RC_CET_GENERAL, UWB_RC_CMD_SET_DRP_IE,
uwb_rc_set_drp_cmd_done, NULL);
rc->set_drp_ie_pending = 1;
kfree(cmd);
error:
return result;
}
/**
* Send all DRP IEs associated with this host
/*
* Evaluate the action to perform using conflict resolution rules
*
* @returns: >= 0 number of bytes still available in the beacon
* < 0 errno code on error.
*
* As per the protocol we obtain the host controller device lock to access
* bandwidth structures.
* Return a uwb_drp_conflict_action.
*/
int uwb_rc_send_all_drp_ie(struct uwb_rc *rc)
static int evaluate_conflict_action(struct uwb_ie_drp *ext_drp_ie, int ext_beacon_slot,
struct uwb_rsv *rsv, int our_status)
{
int result;
int our_tie_breaker = rsv->tiebreaker;
int our_type = rsv->type;
int our_beacon_slot = rsv->rc->uwb_dev.beacon_slot;
mutex_lock(&rc->uwb_dev.mutex);
result = uwb_rc_gen_send_drp_ie(rc);
mutex_unlock(&rc->uwb_dev.mutex);
return result;
}
void uwb_drp_handle_timeout(struct uwb_rsv *rsv)
{
struct device *dev = &rsv->rc->uwb_dev.dev;
dev_dbg(dev, "reservation timeout in state %s (%d)\n",
uwb_rsv_state_str(rsv->state), rsv->state);
switch (rsv->state) {
case UWB_RSV_STATE_O_INITIATED:
if (rsv->is_multicast) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
return;
}
break;
case UWB_RSV_STATE_O_ESTABLISHED:
if (rsv->is_multicast)
return;
break;
default:
break;
int ext_tie_breaker = uwb_ie_drp_tiebreaker(ext_drp_ie);
int ext_status = uwb_ie_drp_status(ext_drp_ie);
int ext_type = uwb_ie_drp_type(ext_drp_ie);
/* [ECMA-368 2nd Edition] 17.4.6 */
if (ext_type == UWB_DRP_TYPE_PCA && our_type == UWB_DRP_TYPE_PCA) {
return UWB_DRP_CONFLICT_MANTAIN;
}
uwb_rsv_remove(rsv);
/* [ECMA-368 2nd Edition] 17.4.6-1 */
if (our_type == UWB_DRP_TYPE_ALIEN_BP) {
return UWB_DRP_CONFLICT_MANTAIN;
}
/* [ECMA-368 2nd Edition] 17.4.6-2 */
if (ext_type == UWB_DRP_TYPE_ALIEN_BP) {
/* here we know our_type != UWB_DRP_TYPE_ALIEN_BP */
return UWB_DRP_CONFLICT_ACT1;
}
/* [ECMA-368 2nd Edition] 17.4.6-3 */
if (our_status == 0 && ext_status == 1) {
return UWB_DRP_CONFLICT_ACT2;
}
/* [ECMA-368 2nd Edition] 17.4.6-4 */
if (our_status == 1 && ext_status == 0) {
return UWB_DRP_CONFLICT_MANTAIN;
}
/* [ECMA-368 2nd Edition] 17.4.6-5a */
if (our_tie_breaker == ext_tie_breaker &&
our_beacon_slot < ext_beacon_slot) {
return UWB_DRP_CONFLICT_MANTAIN;
}
/* [ECMA-368 2nd Edition] 17.4.6-5b */
if (our_tie_breaker != ext_tie_breaker &&
our_beacon_slot > ext_beacon_slot) {
return UWB_DRP_CONFLICT_MANTAIN;
}
if (our_status == 0) {
if (our_tie_breaker == ext_tie_breaker) {
/* [ECMA-368 2nd Edition] 17.4.6-6a */
if (our_beacon_slot > ext_beacon_slot) {
return UWB_DRP_CONFLICT_ACT2;
}
} else {
/* [ECMA-368 2nd Edition] 17.4.6-6b */
if (our_beacon_slot < ext_beacon_slot) {
return UWB_DRP_CONFLICT_ACT2;
}
}
} else {
if (our_tie_breaker == ext_tie_breaker) {
/* [ECMA-368 2nd Edition] 17.4.6-7a */
if (our_beacon_slot > ext_beacon_slot) {
return UWB_DRP_CONFLICT_ACT3;
}
} else {
/* [ECMA-368 2nd Edition] 17.4.6-7b */
if (our_beacon_slot < ext_beacon_slot) {
return UWB_DRP_CONFLICT_ACT3;
}
}
}
return UWB_DRP_CONFLICT_MANTAIN;
}
static void handle_conflict_normal(struct uwb_ie_drp *drp_ie,
int ext_beacon_slot,
struct uwb_rsv *rsv,
struct uwb_mas_bm *conflicting_mas)
{
struct uwb_rc *rc = rsv->rc;
struct uwb_rsv_move *mv = &rsv->mv;
struct uwb_drp_backoff_win *bow = &rc->bow;
int action;
action = evaluate_conflict_action(drp_ie, ext_beacon_slot, rsv, uwb_rsv_status(rsv));
if (uwb_rsv_is_owner(rsv)) {
switch(action) {
case UWB_DRP_CONFLICT_ACT2:
/* try move */
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_TO_BE_MOVED);
if (bow->can_reserve_extra_mases == false)
uwb_rsv_backoff_win_increment(rc);
break;
case UWB_DRP_CONFLICT_ACT3:
uwb_rsv_backoff_win_increment(rc);
/* drop some mases with reason modified */
/* put in the companion the mases to be dropped */
bitmap_and(mv->companion_mas.bm, rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS);
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED);
default:
break;
}
} else {
switch(action) {
case UWB_DRP_CONFLICT_ACT2:
case UWB_DRP_CONFLICT_ACT3:
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT);
default:
break;
}
}
}
static void handle_conflict_expanding(struct uwb_ie_drp *drp_ie, int ext_beacon_slot,
struct uwb_rsv *rsv, bool companion_only,
struct uwb_mas_bm *conflicting_mas)
{
struct uwb_rc *rc = rsv->rc;
struct uwb_drp_backoff_win *bow = &rc->bow;
struct uwb_rsv_move *mv = &rsv->mv;
int action;
if (companion_only) {
/* status of companion is 0 at this point */
action = evaluate_conflict_action(drp_ie, ext_beacon_slot, rsv, 0);
if (uwb_rsv_is_owner(rsv)) {
switch(action) {
case UWB_DRP_CONFLICT_ACT2:
case UWB_DRP_CONFLICT_ACT3:
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
rsv->needs_release_companion_mas = false;
if (bow->can_reserve_extra_mases == false)
uwb_rsv_backoff_win_increment(rc);
uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas);
}
} else { /* rsv is target */
switch(action) {
case UWB_DRP_CONFLICT_ACT2:
case UWB_DRP_CONFLICT_ACT3:
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_CONFLICT);
/* send_drp_avail_ie = true; */
}
}
} else { /* also base part of the reservation is conflicting */
if (uwb_rsv_is_owner(rsv)) {
uwb_rsv_backoff_win_increment(rc);
/* remove companion part */
uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas);
/* drop some mases with reason modified */
/* put in the companion the mases to be dropped */
bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS);
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED);
} else { /* it is a target rsv */
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT);
/* send_drp_avail_ie = true; */
}
}
}
static void uwb_drp_handle_conflict_rsv(struct uwb_rc *rc, struct uwb_rsv *rsv,
struct uwb_rc_evt_drp *drp_evt,
struct uwb_ie_drp *drp_ie,
struct uwb_mas_bm *conflicting_mas)
{
struct uwb_rsv_move *mv;
/* check if the conflicting reservation has two drp_ies */
if (uwb_rsv_has_two_drp_ies(rsv)) {
mv = &rsv->mv;
if (bitmap_intersects(rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) {
handle_conflict_expanding(drp_ie, drp_evt->beacon_slot_number,
rsv, false, conflicting_mas);
} else {
if (bitmap_intersects(mv->companion_mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) {
handle_conflict_expanding(drp_ie, drp_evt->beacon_slot_number,
rsv, true, conflicting_mas);
}
}
} else if (bitmap_intersects(rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) {
handle_conflict_normal(drp_ie, drp_evt->beacon_slot_number, rsv, conflicting_mas);
}
}
static void uwb_drp_handle_all_conflict_rsv(struct uwb_rc *rc,
struct uwb_rc_evt_drp *drp_evt,
struct uwb_ie_drp *drp_ie,
struct uwb_mas_bm *conflicting_mas)
{
struct uwb_rsv *rsv;
list_for_each_entry(rsv, &rc->reservations, rc_node) {
uwb_drp_handle_conflict_rsv(rc, rsv, drp_evt, drp_ie, conflicting_mas);
}
}
/*
* Based on the DRP IE, transition a target reservation to a new
* state.
*/
static void uwb_drp_process_target(struct uwb_rc *rc, struct uwb_rsv *rsv,
struct uwb_ie_drp *drp_ie)
struct uwb_ie_drp *drp_ie, struct uwb_rc_evt_drp *drp_evt)
{
struct device *dev = &rc->uwb_dev.dev;
struct uwb_rsv_move *mv = &rsv->mv;
int status;
enum uwb_drp_reason reason_code;
struct uwb_mas_bm mas;
status = uwb_ie_drp_status(drp_ie);
reason_code = uwb_ie_drp_reason_code(drp_ie);
uwb_drp_ie_to_bm(&mas, drp_ie);
if (status) {
switch (reason_code) {
case UWB_DRP_REASON_ACCEPTED:
switch (reason_code) {
case UWB_DRP_REASON_ACCEPTED:
if (rsv->state == UWB_RSV_STATE_T_CONFLICT) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT);
break;
}
if (rsv->state == UWB_RSV_STATE_T_EXPANDING_ACCEPTED) {
/* drp_ie is companion */
if (!bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS))
/* stroke companion */
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED);
} else {
if (!bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS)) {
if (uwb_drp_avail_reserve_pending(rc, &mas) == -EBUSY) {
/* FIXME: there is a conflict, find
* the conflicting reservations and
* take a sensible action. Consider
* that in drp_ie there is the
* "neighbour" */
uwb_drp_handle_all_conflict_rsv(rc, drp_evt, drp_ie, &mas);
} else {
/* accept the extra reservation */
bitmap_copy(mv->companion_mas.bm, mas.bm, UWB_NUM_MAS);
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED);
}
} else {
if (status) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED);
}
}
}
break;
case UWB_DRP_REASON_MODIFIED:
/* check to see if we have already modified the reservation */
if (bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS)) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED);
break;
case UWB_DRP_REASON_MODIFIED:
dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
reason_code, status);
break;
default:
dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
reason_code, status);
}
} else {
switch (reason_code) {
case UWB_DRP_REASON_ACCEPTED:
/* New reservations are handled in uwb_rsv_find(). */
break;
case UWB_DRP_REASON_DENIED:
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
break;
case UWB_DRP_REASON_CONFLICT:
case UWB_DRP_REASON_MODIFIED:
dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
reason_code, status);
break;
default:
dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
reason_code, status);
/* find if the owner wants to expand or reduce */
if (bitmap_subset(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) {
/* owner is reducing */
bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, mas.bm, UWB_NUM_MAS);
uwb_drp_avail_release(rsv->rc, &mv->companion_mas);
}
bitmap_copy(rsv->mas.bm, mas.bm, UWB_NUM_MAS);
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_RESIZED);
break;
default:
dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
reason_code, status);
}
}
@ -199,23 +450,60 @@ static void uwb_drp_process_target(struct uwb_rc *rc, struct uwb_rsv *rsv,
* state.
*/
static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv,
struct uwb_ie_drp *drp_ie)
struct uwb_dev *src, struct uwb_ie_drp *drp_ie,
struct uwb_rc_evt_drp *drp_evt)
{
struct device *dev = &rc->uwb_dev.dev;
struct uwb_rsv_move *mv = &rsv->mv;
int status;
enum uwb_drp_reason reason_code;
struct uwb_mas_bm mas;
status = uwb_ie_drp_status(drp_ie);
reason_code = uwb_ie_drp_reason_code(drp_ie);
uwb_drp_ie_to_bm(&mas, drp_ie);
if (status) {
switch (reason_code) {
case UWB_DRP_REASON_ACCEPTED:
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
break;
case UWB_DRP_REASON_MODIFIED:
dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
reason_code, status);
switch (rsv->state) {
case UWB_RSV_STATE_O_PENDING:
case UWB_RSV_STATE_O_INITIATED:
case UWB_RSV_STATE_O_ESTABLISHED:
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
break;
case UWB_RSV_STATE_O_MODIFIED:
if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
} else {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED);
}
break;
case UWB_RSV_STATE_O_MOVE_REDUCING: /* shouldn' t be a problem */
if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
} else {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING);
}
break;
case UWB_RSV_STATE_O_MOVE_EXPANDING:
if (bitmap_equal(mas.bm, mv->companion_mas.bm, UWB_NUM_MAS)) {
/* Companion reservation accepted */
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING);
} else {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING);
}
break;
case UWB_RSV_STATE_O_MOVE_COMBINING:
if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS))
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING);
else
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING);
break;
default:
break;
}
break;
default:
dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
@ -230,9 +518,10 @@ static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv,
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
break;
case UWB_DRP_REASON_CONFLICT:
case UWB_DRP_REASON_MODIFIED:
dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
reason_code, status);
/* resolve the conflict */
bitmap_complement(mas.bm, src->last_availability_bm,
UWB_NUM_MAS);
uwb_drp_handle_conflict_rsv(rc, rsv, drp_evt, drp_ie, &mas);
break;
default:
dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
@ -241,12 +530,110 @@ static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv,
}
}
static void uwb_cnflt_alien_stroke_timer(struct uwb_cnflt_alien *cnflt)
{
unsigned timeout_us = UWB_MAX_LOST_BEACONS * UWB_SUPERFRAME_LENGTH_US;
mod_timer(&cnflt->timer, jiffies + usecs_to_jiffies(timeout_us));
}
static void uwb_cnflt_update_work(struct work_struct *work)
{
struct uwb_cnflt_alien *cnflt = container_of(work,
struct uwb_cnflt_alien,
cnflt_update_work);
struct uwb_cnflt_alien *c;
struct uwb_rc *rc = cnflt->rc;
unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE;
mutex_lock(&rc->rsvs_mutex);
list_del(&cnflt->rc_node);
/* update rc global conflicting alien bitmap */
bitmap_zero(rc->cnflt_alien_bitmap.bm, UWB_NUM_MAS);
list_for_each_entry(c, &rc->cnflt_alien_list, rc_node) {
bitmap_or(rc->cnflt_alien_bitmap.bm, rc->cnflt_alien_bitmap.bm, c->mas.bm, UWB_NUM_MAS);
}
queue_delayed_work(rc->rsv_workq, &rc->rsv_alien_bp_work, usecs_to_jiffies(delay_us));
kfree(cnflt);
mutex_unlock(&rc->rsvs_mutex);
}
static void uwb_cnflt_timer(unsigned long arg)
{
struct uwb_cnflt_alien *cnflt = (struct uwb_cnflt_alien *)arg;
queue_work(cnflt->rc->rsv_workq, &cnflt->cnflt_update_work);
}
/*
* Process a received DRP IE, it's either for a reservation owned by
* the RC or targeted at it (or it's for a WUSB cluster reservation).
* We have received an DRP_IE of type Alien BP and we need to make
* sure we do not transmit in conflicting MASs.
*/
static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src,
struct uwb_ie_drp *drp_ie)
static void uwb_drp_handle_alien_drp(struct uwb_rc *rc, struct uwb_ie_drp *drp_ie)
{
struct device *dev = &rc->uwb_dev.dev;
struct uwb_mas_bm mas;
struct uwb_cnflt_alien *cnflt;
char buf[72];
unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE;
uwb_drp_ie_to_bm(&mas, drp_ie);
bitmap_scnprintf(buf, sizeof(buf), mas.bm, UWB_NUM_MAS);
list_for_each_entry(cnflt, &rc->cnflt_alien_list, rc_node) {
if (bitmap_equal(cnflt->mas.bm, mas.bm, UWB_NUM_MAS)) {
/* Existing alien BP reservation conflicting
* bitmap, just reset the timer */
uwb_cnflt_alien_stroke_timer(cnflt);
return;
}
}
/* New alien BP reservation conflicting bitmap */
/* alloc and initialize new uwb_cnflt_alien */
cnflt = kzalloc(sizeof(struct uwb_cnflt_alien), GFP_KERNEL);
if (!cnflt)
dev_err(dev, "failed to alloc uwb_cnflt_alien struct\n");
INIT_LIST_HEAD(&cnflt->rc_node);
init_timer(&cnflt->timer);
cnflt->timer.function = uwb_cnflt_timer;
cnflt->timer.data = (unsigned long)cnflt;
cnflt->rc = rc;
INIT_WORK(&cnflt->cnflt_update_work, uwb_cnflt_update_work);
bitmap_copy(cnflt->mas.bm, mas.bm, UWB_NUM_MAS);
list_add_tail(&cnflt->rc_node, &rc->cnflt_alien_list);
/* update rc global conflicting alien bitmap */
bitmap_or(rc->cnflt_alien_bitmap.bm, rc->cnflt_alien_bitmap.bm, mas.bm, UWB_NUM_MAS);
queue_delayed_work(rc->rsv_workq, &rc->rsv_alien_bp_work, usecs_to_jiffies(delay_us));
/* start the timer */
uwb_cnflt_alien_stroke_timer(cnflt);
}
static void uwb_drp_process_not_involved(struct uwb_rc *rc,
struct uwb_rc_evt_drp *drp_evt,
struct uwb_ie_drp *drp_ie)
{
struct uwb_mas_bm mas;
uwb_drp_ie_to_bm(&mas, drp_ie);
uwb_drp_handle_all_conflict_rsv(rc, drp_evt, drp_ie, &mas);
}
static void uwb_drp_process_involved(struct uwb_rc *rc, struct uwb_dev *src,
struct uwb_rc_evt_drp *drp_evt,
struct uwb_ie_drp *drp_ie)
{
struct uwb_rsv *rsv;
@ -259,7 +646,7 @@ static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src,
*/
return;
}
/*
* Do nothing with DRP IEs for reservations that have been
* terminated.
@ -268,14 +655,44 @@ static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src,
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
return;
}
if (uwb_ie_drp_owner(drp_ie))
uwb_drp_process_target(rc, rsv, drp_ie);
uwb_drp_process_target(rc, rsv, drp_ie, drp_evt);
else
uwb_drp_process_owner(rc, rsv, drp_ie);
uwb_drp_process_owner(rc, rsv, src, drp_ie, drp_evt);
}
static bool uwb_drp_involves_us(struct uwb_rc *rc, struct uwb_ie_drp *drp_ie)
{
return uwb_dev_addr_cmp(&rc->uwb_dev.dev_addr, &drp_ie->dev_addr) == 0;
}
/*
* Process a received DRP IE.
*/
static void uwb_drp_process(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
struct uwb_dev *src, struct uwb_ie_drp *drp_ie)
{
if (uwb_ie_drp_type(drp_ie) == UWB_DRP_TYPE_ALIEN_BP)
uwb_drp_handle_alien_drp(rc, drp_ie);
else if (uwb_drp_involves_us(rc, drp_ie))
uwb_drp_process_involved(rc, src, drp_evt, drp_ie);
else
uwb_drp_process_not_involved(rc, drp_evt, drp_ie);
}
/*
* Process a received DRP Availability IE
*/
static void uwb_drp_availability_process(struct uwb_rc *rc, struct uwb_dev *src,
struct uwb_ie_drp_avail *drp_availability_ie)
{
bitmap_copy(src->last_availability_bm,
drp_availability_ie->bmp, UWB_NUM_MAS);
}
/*
* Process all the DRP IEs (both DRP IEs and the DRP Availability IE)
* from a device.
@ -296,10 +713,10 @@ void uwb_drp_process_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
switch (ie_hdr->element_id) {
case UWB_IE_DRP_AVAILABILITY:
/* FIXME: does something need to be done with this? */
uwb_drp_availability_process(rc, src_dev, (struct uwb_ie_drp_avail *)ie_hdr);
break;
case UWB_IE_DRP:
uwb_drp_process(rc, src_dev, (struct uwb_ie_drp *)ie_hdr);
uwb_drp_process(rc, drp_evt, src_dev, (struct uwb_ie_drp *)ie_hdr);
break;
default:
dev_warn(dev, "unexpected IE in DRP notification\n");
@ -312,55 +729,6 @@ void uwb_drp_process_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
(int)ielen);
}
/*
* Go through all the DRP IEs and find the ones that conflict with our
* reservations.
*
* FIXME: must resolve the conflict according the the rules in
* [ECMA-368].
*/
static
void uwb_drp_process_conflict_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
size_t ielen, struct uwb_dev *src_dev)
{
struct device *dev = &rc->uwb_dev.dev;
struct uwb_ie_hdr *ie_hdr;
struct uwb_ie_drp *drp_ie;
void *ptr;
ptr = drp_evt->ie_data;
for (;;) {
ie_hdr = uwb_ie_next(&ptr, &ielen);
if (!ie_hdr)
break;
drp_ie = container_of(ie_hdr, struct uwb_ie_drp, hdr);
/* FIXME: check if this DRP IE conflicts. */
}
if (ielen > 0)
dev_warn(dev, "%d octets remaining in DRP notification\n",
(int)ielen);
}
/*
* Terminate all reservations owned by, or targeted at, 'uwb_dev'.
*/
static void uwb_drp_terminate_all(struct uwb_rc *rc, struct uwb_dev *uwb_dev)
{
struct uwb_rsv *rsv;
list_for_each_entry(rsv, &rc->reservations, rc_node) {
if (rsv->owner == uwb_dev
|| (rsv->target.type == UWB_RSV_TARGET_DEV && rsv->target.dev == uwb_dev))
uwb_rsv_remove(rsv);
}
}
/**
* uwbd_evt_handle_rc_drp - handle a DRP_IE event
* @evt: the DRP_IE event from the radio controller
@ -401,7 +769,6 @@ int uwbd_evt_handle_rc_drp(struct uwb_event *evt)
size_t ielength, bytes_left;
struct uwb_dev_addr src_addr;
struct uwb_dev *src_dev;
int reason;
/* Is there enough data to decode the event (and any IEs in
its payload)? */
@ -437,22 +804,8 @@ int uwbd_evt_handle_rc_drp(struct uwb_event *evt)
mutex_lock(&rc->rsvs_mutex);
reason = uwb_rc_evt_drp_reason(drp_evt);
switch (reason) {
case UWB_DRP_NOTIF_DRP_IE_RCVD:
uwb_drp_process_all(rc, drp_evt, ielength, src_dev);
break;
case UWB_DRP_NOTIF_CONFLICT:
uwb_drp_process_conflict_all(rc, drp_evt, ielength, src_dev);
break;
case UWB_DRP_NOTIF_TERMINATE:
uwb_drp_terminate_all(rc, src_dev);
break;
default:
dev_warn(dev, "ignored DRP event with reason code: %d\n", reason);
break;
}
/* We do not distinguish from the reason */
uwb_drp_process_all(rc, drp_evt, ielength, src_dev);
mutex_unlock(&rc->rsvs_mutex);

14
drivers/uwb/est.c
View File

@ -40,10 +40,8 @@
* uwb_est_get_size()
*/
#include <linux/spinlock.h>
#define D_LOCAL 0
#include <linux/uwb/debug.h>
#include "uwb-internal.h"
#include "uwb-internal.h"
struct uwb_est {
u16 type_event_high;
@ -52,7 +50,6 @@ struct uwb_est {
const struct uwb_est_entry *entry;
};
static struct uwb_est *uwb_est;
static u8 uwb_est_size;
static u8 uwb_est_used;
@ -440,21 +437,12 @@ ssize_t uwb_est_find_size(struct uwb_rc *rc, const struct uwb_rceb *rceb,
u8 *ptr = (u8 *) rceb;
read_lock_irqsave(&uwb_est_lock, flags);
d_printf(2, dev, "Size query for event 0x%02x/%04x/%02x,"
" buffer size %ld\n",
(unsigned) rceb->bEventType,
(unsigned) le16_to_cpu(rceb->wEvent),
(unsigned) rceb->bEventContext,
(long) rceb_size);
size = -ENOSPC;
if (rceb_size < sizeof(*rceb))
goto out;
event = le16_to_cpu(rceb->wEvent);
type_event_high = rceb->bEventType << 8 | (event & 0xff00) >> 8;
for (itr = 0; itr < uwb_est_used; itr++) {
d_printf(3, dev, "Checking EST 0x%04x/%04x/%04x\n",
uwb_est[itr].type_event_high, uwb_est[itr].vendor,
uwb_est[itr].product);
if (uwb_est[itr].type_event_high != type_event_high)
continue;
size = uwb_est_get_size(rc, &uwb_est[itr],

53
drivers/uwb/hwa-rc.c
View File

@ -51,16 +51,14 @@
*
*
*/
#include <linux/version.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/wusb.h>
#include <linux/usb/wusb-wa.h>
#include <linux/uwb.h>
#include "uwb-internal.h"
#define D_LOCAL 1
#include <linux/uwb/debug.h>
/* The device uses commands and events from the WHCI specification, although
* reporting itself as WUSB compliant. */
@ -631,17 +629,13 @@ void hwarc_neep_cb(struct urb *urb)
switch (result = urb->status) {
case 0:
d_printf(3, dev, "NEEP: receive stat %d, %zu bytes\n",
urb->status, (size_t)urb->actual_length);
uwb_rc_neh_grok(hwarc->uwb_rc, urb->transfer_buffer,
urb->actual_length);
break;
case -ECONNRESET: /* Not an error, but a controlled situation; */
case -ENOENT: /* (we killed the URB)...so, no broadcast */
d_printf(2, dev, "NEEP: URB reset/noent %d\n", urb->status);
goto out;
case -ESHUTDOWN: /* going away! */
d_printf(2, dev, "NEEP: URB down %d\n", urb->status);
goto out;
default: /* On general errors, retry unless it gets ugly */
if (edc_inc(&hwarc->neep_edc, EDC_MAX_ERRORS,
@ -650,7 +644,6 @@ void hwarc_neep_cb(struct urb *urb)
dev_err(dev, "NEEP: URB error %d\n", urb->status);
}
result = usb_submit_urb(urb, GFP_ATOMIC);
d_printf(3, dev, "NEEP: submit %d\n", result);
if (result < 0) {
dev_err(dev, "NEEP: Can't resubmit URB (%d) resetting device\n",
result);
@ -759,11 +752,11 @@ static int hwarc_get_version(struct uwb_rc *rc)
itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
while (itr_size >= sizeof(*hdr)) {
hdr = (struct usb_descriptor_header *) itr;
d_printf(3, dev, "Extra device descriptor: "
"type %02x/%u bytes @ %zu (%zu left)\n",
hdr->bDescriptorType, hdr->bLength,
(itr - usb_dev->rawdescriptors[actconfig_idx]),
itr_size);
dev_dbg(dev, "Extra device descriptor: "
"type %02x/%u bytes @ %zu (%zu left)\n",
hdr->bDescriptorType, hdr->bLength,
(itr - usb_dev->rawdescriptors[actconfig_idx]),
itr_size);
if (hdr->bDescriptorType == USB_DT_CS_RADIO_CONTROL)
goto found;
itr += hdr->bLength;
@ -795,8 +788,7 @@ static int hwarc_get_version(struct uwb_rc *rc)
goto error;
}
rc->version = version;
d_printf(3, dev, "Device supports WUSB protocol version 0x%04x \n",
rc->version);
dev_dbg(dev, "Device supports WUSB protocol version 0x%04x \n", rc->version);
result = 0;
error:
return result;
@ -877,11 +869,28 @@ static void hwarc_disconnect(struct usb_interface *iface)
uwb_rc_rm(uwb_rc);
usb_put_intf(hwarc->usb_iface);
usb_put_dev(hwarc->usb_dev);
d_printf(1, &hwarc->usb_iface->dev, "freed hwarc %p\n", hwarc);
kfree(hwarc);
uwb_rc_put(uwb_rc); /* when creating the device, refcount = 1 */
}
static int hwarc_pre_reset(struct usb_interface *iface)
{
struct hwarc *hwarc = usb_get_intfdata(iface);
struct uwb_rc *uwb_rc = hwarc->uwb_rc;
uwb_rc_pre_reset(uwb_rc);
return 0;
}
static int hwarc_post_reset(struct usb_interface *iface)
{
struct hwarc *hwarc = usb_get_intfdata(iface);
struct uwb_rc *uwb_rc = hwarc->uwb_rc;
uwb_rc_post_reset(uwb_rc);
return 0;
}
/** USB device ID's that we handle */
static struct usb_device_id hwarc_id_table[] = {
/* D-Link DUB-1210 */
@ -898,20 +907,16 @@ MODULE_DEVICE_TABLE(usb, hwarc_id_table);
static struct usb_driver hwarc_driver = {
.name = "hwa-rc",
.id_table = hwarc_id_table,
.probe = hwarc_probe,
.disconnect = hwarc_disconnect,
.id_table = hwarc_id_table,
.pre_reset = hwarc_pre_reset,
.post_reset = hwarc_post_reset,
};
static int __init hwarc_driver_init(void)
{
int result;
result = usb_register(&hwarc_driver);
if (result < 0)
printk(KERN_ERR "HWA-RC: Cannot register USB driver: %d\n",
result);
return result;
return usb_register(&hwarc_driver);
}
module_init(hwarc_driver_init);

10
drivers/uwb/i1480/dfu/dfu.c
View File

@ -34,10 +34,7 @@
#include <linux/uwb.h>
#include <linux/random.h>
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/**
/*
* i1480_rceb_check - Check RCEB for expected field values
* @i1480: pointer to device for which RCEB is being checked
* @rceb: RCEB being checked
@ -83,7 +80,7 @@ int i1480_rceb_check(const struct i1480 *i1480, const struct uwb_rceb *rceb,
EXPORT_SYMBOL_GPL(i1480_rceb_check);
/**
/*
* Execute a Radio Control Command
*
* Command data has to be in i1480->cmd_buf.
@ -101,7 +98,6 @@ ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size,
u8 expected_type = reply->bEventType;
u8 context;
d_fnstart(3, i1480->dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
init_completion(&i1480->evt_complete);
i1480->evt_result = -EINPROGRESS;
do {
@ -150,8 +146,6 @@ ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size,
result = i1480_rceb_check(i1480, i1480->evt_buf, cmd_name, context,
expected_type, expected_event);
error:
d_fnend(3, i1480->dev, "(%p, %s, %zu) = %zd\n",
i1480, cmd_name, cmd_size, result);
return result;
}
EXPORT_SYMBOL_GPL(i1480_cmd);

18
drivers/uwb/i1480/dfu/mac.c
View File

@ -31,9 +31,6 @@
#include <linux/uwb.h>
#include "i1480-dfu.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/*
* Descriptor for a continuous segment of MAC fw data
*/
@ -184,10 +181,6 @@ ssize_t i1480_fw_cmp(struct i1480 *i1480, struct fw_hdr *hdr)
}
if (memcmp(i1480->cmd_buf, bin + src_itr, result)) {
u8 *buf = i1480->cmd_buf;
d_printf(2, i1480->dev,
"original data @ %p + %u, %zu bytes\n",
bin, src_itr, result);
d_dump(4, i1480->dev, bin + src_itr, result);
for (cnt = 0; cnt < result; cnt++)
if (bin[src_itr + cnt] != buf[cnt]) {
dev_err(i1480->dev, "byte failed at "
@ -224,7 +217,6 @@ int mac_fw_hdrs_push(struct i1480 *i1480, struct fw_hdr *hdr,
struct fw_hdr *hdr_itr;
int verif_retry_count;
d_fnstart(3, dev, "(%p, %p)\n", i1480, hdr);
/* Now, header by header, push them to the hw */
for (hdr_itr = hdr; hdr_itr != NULL; hdr_itr = hdr_itr->next) {
verif_retry_count = 0;
@ -264,7 +256,6 @@ int mac_fw_hdrs_push(struct i1480 *i1480, struct fw_hdr *hdr,
break;
}
}
d_fnend(3, dev, "(%zd)\n", result);
return result;
}
@ -337,11 +328,9 @@ int __mac_fw_upload(struct i1480 *i1480, const char *fw_name,
const struct firmware *fw;
struct fw_hdr *fw_hdrs;
d_fnstart(3, i1480->dev, "(%p, %s, %s)\n", i1480, fw_name, fw_tag);
result = request_firmware(&fw, fw_name, i1480->dev);
if (result < 0) /* Up to caller to complain on -ENOENT */
goto out;
d_printf(3, i1480->dev, "%s fw '%s': uploading\n", fw_tag, fw_name);
result = fw_hdrs_load(i1480, &fw_hdrs, fw->data, fw->size);
if (result < 0) {
dev_err(i1480->dev, "%s fw '%s': failed to parse firmware "
@ -363,8 +352,6 @@ int __mac_fw_upload(struct i1480 *i1480, const char *fw_name,
out_release:
release_firmware(fw);
out:
d_fnend(3, i1480->dev, "(%p, %s, %s) = %d\n", i1480, fw_name, fw_tag,
result);
return result;
}
@ -433,7 +420,6 @@ int i1480_fw_is_running_q(struct i1480 *i1480)
int result;
u32 *val = (u32 *) i1480->cmd_buf;
d_fnstart(3, i1480->dev, "(i1480 %p)\n", i1480);
for (cnt = 0; cnt < 10; cnt++) {
msleep(100);
result = i1480->read(i1480, 0x80080000, 4);
@ -447,7 +433,6 @@ int i1480_fw_is_running_q(struct i1480 *i1480)
dev_err(i1480->dev, "Timed out waiting for fw to start\n");
result = -ETIMEDOUT;
out:
d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
return result;
}
@ -467,7 +452,6 @@ int i1480_mac_fw_upload(struct i1480 *i1480)
int result = 0, deprecated_name = 0;
struct i1480_rceb *rcebe = (void *) i1480->evt_buf;
d_fnstart(3, i1480->dev, "(%p)\n", i1480);
result = __mac_fw_upload(i1480, i1480->mac_fw_name, "MAC");
if (result == -ENOENT) {
result = __mac_fw_upload(i1480, i1480->mac_fw_name_deprecate,
@ -501,7 +485,6 @@ int i1480_mac_fw_upload(struct i1480 *i1480)
dev_err(i1480->dev, "MAC fw '%s': initialization event returns "
"wrong size (%zu bytes vs %zu needed)\n",
i1480->mac_fw_name, i1480->evt_result, sizeof(*rcebe));
dump_bytes(i1480->dev, rcebe, min(i1480->evt_result, (ssize_t)32));
goto error_size;
}
result = -EIO;
@ -522,6 +505,5 @@ int i1480_mac_fw_upload(struct i1480 *i1480)
error_init_timeout:
error_size:
error_setup:
d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
return result;
}

27
drivers/uwb/i1480/dfu/usb.c
View File

@ -35,7 +35,6 @@
* the functions are i1480_usb_NAME().
*/
#include <linux/module.h>
#include <linux/version.h>
#include <linux/usb.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
@ -44,10 +43,6 @@
#include <linux/usb/wusb-wa.h>
#include "i1480-dfu.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
struct i1480_usb {
struct i1480 i1480;
struct usb_device *usb_dev;
@ -118,8 +113,6 @@ int i1480_usb_write(struct i1480 *i1480, u32 memory_address,
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
size_t buffer_size, itr = 0;
d_fnstart(3, i1480->dev, "(%p, 0x%08x, %p, %zu)\n",
i1480, memory_address, buffer, size);
BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
while (size > 0) {
buffer_size = size < i1480->buf_size ? size : i1480->buf_size;
@ -132,16 +125,10 @@ int i1480_usb_write(struct i1480 *i1480, u32 memory_address,
i1480->cmd_buf, buffer_size, 100 /* FIXME: arbitrary */);
if (result < 0)
break;
d_printf(3, i1480->dev,
"wrote @ 0x%08x %u bytes (of %zu bytes requested)\n",
memory_address, result, buffer_size);
d_dump(4, i1480->dev, i1480->cmd_buf, result);
itr += result;
memory_address += result;
size -= result;
}
d_fnend(3, i1480->dev, "(%p, 0x%08x, %p, %zu) = %d\n",
i1480, memory_address, buffer, size, result);
return result;
}
@ -166,8 +153,6 @@ int i1480_usb_read(struct i1480 *i1480, u32 addr, size_t size)
size_t itr, read_size = i1480->buf_size;
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
d_fnstart(3, i1480->dev, "(%p, 0x%08x, %zu)\n",
i1480, addr, size);
BUG_ON(size > i1480->buf_size);
BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
BUG_ON(read_size > 512);
@ -201,10 +186,6 @@ int i1480_usb_read(struct i1480 *i1480, u32 addr, size_t size)
}
result = bytes;
out:
d_fnend(3, i1480->dev, "(%p, 0x%08x, %zu) = %zd\n",
i1480, addr, size, result);
if (result > 0)
d_dump(4, i1480->dev, i1480->cmd_buf, result);
return result;
}
@ -260,7 +241,6 @@ int i1480_usb_wait_init_done(struct i1480 *i1480)
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
struct usb_endpoint_descriptor *epd;
d_fnstart(3, dev, "(%p)\n", i1480);
init_completion(&i1480->evt_complete);
i1480->evt_result = -EINPROGRESS;
epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
@ -282,14 +262,12 @@ int i1480_usb_wait_init_done(struct i1480 *i1480)
goto error_wait;
}
usb_kill_urb(i1480_usb->neep_urb);
d_fnend(3, dev, "(%p) = 0\n", i1480);
return 0;
error_wait:
usb_kill_urb(i1480_usb->neep_urb);
error_submit:
i1480->evt_result = result;
d_fnend(3, dev, "(%p) = %d\n", i1480, result);
return result;
}
@ -320,7 +298,6 @@ int i1480_usb_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size)
struct uwb_rccb *cmd = i1480->cmd_buf;
u8 iface_no;
d_fnstart(3, dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
/* Post a read on the notification & event endpoint */
iface_no = i1480_usb->usb_iface->cur_altsetting->desc.bInterfaceNumber;
epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
@ -348,15 +325,11 @@ int i1480_usb_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size)
cmd_name, result);
goto error_submit_ep0;
}
d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
i1480, cmd_name, cmd_size, result);
return result;
error_submit_ep0:
usb_kill_urb(i1480_usb->neep_urb);
error_submit_ep1:
d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
i1480, cmd_name, cmd_size, result);
return result;
}

5
drivers/uwb/i1480/i1480u-wlp/lc.c
View File

@ -55,10 +55,9 @@
* is being removed.
* i1480u_rm()
*/
#include <linux/version.h>
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <linux/uwb/debug.h>
#include "i1480u-wlp.h"
@ -207,7 +206,7 @@ int i1480u_add(struct i1480u *i1480u, struct usb_interface *iface)
wlp->fill_device_info = i1480u_fill_device_info;
wlp->stop_queue = i1480u_stop_queue;
wlp->start_queue = i1480u_start_queue;
result = wlp_setup(wlp, rc);
result = wlp_setup(wlp, rc, net_dev);
if (result < 0) {
dev_err(&iface->dev, "Cannot setup WLP\n");
goto error_wlp_setup;

53
drivers/uwb/i1480/i1480u-wlp/netdev.c
View File

@ -41,7 +41,7 @@
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <linux/uwb/debug.h>
#include "i1480u-wlp.h"
struct i1480u_cmd_set_ip_mas {
@ -207,6 +207,11 @@ int i1480u_open(struct net_device *net_dev)
result = i1480u_rx_setup(i1480u); /* Alloc RX stuff */
if (result < 0)
goto error_rx_setup;
result = uwb_radio_start(&wlp->pal);
if (result < 0)
goto error_radio_start;
netif_wake_queue(net_dev);
#ifdef i1480u_FLOW_CONTROL
result = usb_submit_urb(i1480u->notif_urb, GFP_KERNEL);;
@ -215,25 +220,20 @@ int i1480u_open(struct net_device *net_dev)
goto error_notif_urb_submit;
}
#endif
i1480u->uwb_notifs_handler.cb = i1480u_uwb_notifs_cb;
i1480u->uwb_notifs_handler.data = i1480u;
if (uwb_bg_joined(rc))
netif_carrier_on(net_dev);
else
netif_carrier_off(net_dev);
uwb_notifs_register(rc, &i1480u->uwb_notifs_handler);
/* Interface is up with an address, now we can create WSS */
result = wlp_wss_setup(net_dev, &wlp->wss);
if (result < 0) {
dev_err(dev, "Can't create WSS: %d. \n", result);
goto error_notif_deregister;
goto error_wss_setup;
}
return 0;
error_notif_deregister:
uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler);
error_wss_setup:
#ifdef i1480u_FLOW_CONTROL
usb_kill_urb(i1480u->notif_urb);
error_notif_urb_submit:
#endif
uwb_radio_stop(&wlp->pal);
error_radio_start:
netif_stop_queue(net_dev);
i1480u_rx_release(i1480u);
error_rx_setup:
@ -248,16 +248,15 @@ int i1480u_stop(struct net_device *net_dev)
{
struct i1480u *i1480u = netdev_priv(net_dev);
struct wlp *wlp = &i1480u->wlp;
struct uwb_rc *rc = wlp->rc;
BUG_ON(wlp->rc == NULL);
wlp_wss_remove(&wlp->wss);
uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler);
netif_carrier_off(net_dev);
#ifdef i1480u_FLOW_CONTROL
usb_kill_urb(i1480u->notif_urb);
#endif
netif_stop_queue(net_dev);
uwb_radio_stop(&wlp->pal);
i1480u_rx_release(i1480u);
i1480u_tx_release(i1480u);
return 0;
@ -303,34 +302,6 @@ int i1480u_change_mtu(struct net_device *net_dev, int mtu)
return 0;
}
/**
* Callback function to handle events from UWB
* When we see other devices we know the carrier is ok,
* if we are the only device in the beacon group we set the carrier
* state to off.
* */
void i1480u_uwb_notifs_cb(void *data, struct uwb_dev *uwb_dev,
enum uwb_notifs event)
{
struct i1480u *i1480u = data;
struct net_device *net_dev = i1480u->net_dev;
struct device *dev = &i1480u->usb_iface->dev;
switch (event) {
case UWB_NOTIF_BG_JOIN:
netif_carrier_on(net_dev);
dev_info(dev, "Link is up\n");
break;
case UWB_NOTIF_BG_LEAVE:
netif_carrier_off(net_dev);
dev_info(dev, "Link is down\n");
break;
default:
dev_err(dev, "don't know how to handle event %d from uwb\n",
event);
}
}
/**
* Stop the network queue
*

25
drivers/uwb/i1480/i1480u-wlp/rx.c
View File

@ -68,11 +68,7 @@
#include <linux/etherdevice.h>
#include "i1480u-wlp.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/**
/*
* Setup the RX context
*
* Each URB is provided with a transfer_buffer that is the data field
@ -129,7 +125,7 @@ int i1480u_rx_setup(struct i1480u *i1480u)
}
/** Release resources associated to the rx context */
/* Release resources associated to the rx context */
void i1480u_rx_release(struct i1480u *i1480u)
{
int cnt;
@ -155,7 +151,7 @@ void i1480u_rx_unlink_urbs(struct i1480u *i1480u)
}
}
/** Fix an out-of-sequence packet */
/* Fix an out-of-sequence packet */
#define i1480u_fix(i1480u, msg...) \
do { \
if (printk_ratelimit()) \
@ -166,7 +162,7 @@ do { \
} while (0)
/** Drop an out-of-sequence packet */
/* Drop an out-of-sequence packet */
#define i1480u_drop(i1480u, msg...) \
do { \
if (printk_ratelimit()) \
@ -177,7 +173,7 @@ do { \
/** Finalizes setting up the SKB and delivers it
/* Finalizes setting up the SKB and delivers it
*
* We first pass the incoming frame to WLP substack for verification. It
* may also be a WLP association frame in which case WLP will take over the
@ -192,18 +188,11 @@ void i1480u_skb_deliver(struct i1480u *i1480u)
struct net_device *net_dev = i1480u->net_dev;
struct device *dev = &i1480u->usb_iface->dev;
d_printf(6, dev, "RX delivered pre skb(%p), %u bytes\n",
i1480u->rx_skb, i1480u->rx_skb->len);
d_dump(7, dev, i1480u->rx_skb->data, i1480u->rx_skb->len);
should_parse = wlp_receive_frame(dev, &i1480u->wlp, i1480u->rx_skb,
&i1480u->rx_srcaddr);
if (!should_parse)
goto out;
i1480u->rx_skb->protocol = eth_type_trans(i1480u->rx_skb, net_dev);
d_printf(5, dev, "RX delivered skb(%p), %u bytes\n",
i1480u->rx_skb, i1480u->rx_skb->len);
d_dump(7, dev, i1480u->rx_skb->data,
i1480u->rx_skb->len > 72 ? 72 : i1480u->rx_skb->len);
i1480u->stats.rx_packets++;
i1480u->stats.rx_bytes += i1480u->rx_untd_pkt_size;
net_dev->last_rx = jiffies;
@ -216,7 +205,7 @@ void i1480u_skb_deliver(struct i1480u *i1480u)
}
/**
/*
* Process a buffer of data received from the USB RX endpoint
*
* First fragment arrives with next or last fragment. All other fragments
@ -404,7 +393,7 @@ void i1480u_rx_buffer(struct i1480u_rx_buf *rx_buf)
}
/**
/*
* Called when an RX URB has finished receiving or has found some kind
* of error condition.
*

3
drivers/uwb/i1480/i1480u-wlp/sysfs.c
View File

@ -25,8 +25,8 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/uwb/debug.h>
#include <linux/device.h>
#include "i1480u-wlp.h"
@ -226,7 +226,6 @@ ssize_t wlp_tx_inflight_store(struct i1480u_tx_inflight *inflight,
* (CLASS_DEVICE_ATTR or DEVICE_ATTR) and i1480u_ATTR_NAME produces a
* class_device_attr_NAME or device_attr_NAME (for group registration).
*/
#include <linux/version.h>
#define i1480u_SHOW(name, fn, param) \
static ssize_t i1480u_show_##name(struct device *dev, \

66
drivers/uwb/i1480/i1480u-wlp/tx.c
View File

@ -55,8 +55,6 @@
*/
#include "i1480u-wlp.h"
#define D_LOCAL 5
#include <linux/uwb/debug.h>
enum {
/* This is only for Next and Last TX packets */
@ -64,7 +62,7 @@ enum {
- sizeof(struct untd_hdr_rst),
};
/** Free resources allocated to a i1480u tx context. */
/* Free resources allocated to a i1480u tx context. */
static
void i1480u_tx_free(struct i1480u_tx *wtx)
{
@ -99,7 +97,7 @@ void i1480u_tx_unlink_urbs(struct i1480u *i1480u)
}
/**
/*
* Callback for a completed tx USB URB.
*
* TODO:
@ -149,8 +147,6 @@ void i1480u_tx_cb(struct urb *urb)
<= i1480u->tx_inflight.threshold
&& netif_queue_stopped(net_dev)
&& i1480u->tx_inflight.threshold != 0) {
if (d_test(2) && printk_ratelimit())
d_printf(2, dev, "Restart queue. \n");
netif_start_queue(net_dev);
atomic_inc(&i1480u->tx_inflight.restart_count);
}
@ -158,7 +154,7 @@ void i1480u_tx_cb(struct urb *urb)
}
/**
/*
* Given a buffer that doesn't fit in a single fragment, create an
* scatter/gather structure for delivery to the USB pipe.
*
@ -253,15 +249,11 @@ int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb,
/* Now do each remaining fragment */
result = -EINVAL;
while (pl_size_left > 0) {
d_printf(5, NULL, "ITR HDR: pl_size_left %zu buf_itr %zu\n",
pl_size_left, buf_itr - wtx->buf);
if (buf_itr + sizeof(*untd_hdr_rst) - wtx->buf
> wtx->buf_size) {
printk(KERN_ERR "BUG: no space for header\n");
goto error_bug;
}
d_printf(5, NULL, "ITR HDR 2: pl_size_left %zu buf_itr %zu\n",
pl_size_left, buf_itr - wtx->buf);
untd_hdr_rst = buf_itr;
buf_itr += sizeof(*untd_hdr_rst);
if (pl_size_left > i1480u_MAX_PL_SIZE) {
@ -271,9 +263,6 @@ int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb,
frg_pl_size = pl_size_left;
untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_LST);
}
d_printf(5, NULL,
"ITR PL: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n",
pl_size_left, buf_itr - wtx->buf, frg_pl_size);
untd_hdr_set_rx_tx(&untd_hdr_rst->hdr, 0);
untd_hdr_rst->hdr.len = cpu_to_le16(frg_pl_size);
untd_hdr_rst->padding = 0;
@ -286,9 +275,6 @@ int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb,
buf_itr += frg_pl_size;
pl_itr += frg_pl_size;
pl_size_left -= frg_pl_size;
d_printf(5, NULL,
"ITR PL 2: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n",
pl_size_left, buf_itr - wtx->buf, frg_pl_size);
}
dev_kfree_skb_irq(skb);
return 0;
@ -308,7 +294,7 @@ int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb,
}
/**
/*
* Given a buffer that fits in a single fragment, fill out a @wtx
* struct for transmitting it down the USB pipe.
*
@ -346,7 +332,7 @@ int i1480u_tx_create_1(struct i1480u_tx *wtx, struct sk_buff *skb,
}
/**
/*
* Given a skb to transmit, massage it to become palatable for the TX pipe
*
* This will break the buffer in chunks smaller than
@ -425,7 +411,7 @@ struct i1480u_tx *i1480u_tx_create(struct i1480u *i1480u,
return NULL;
}
/**
/*
* Actual fragmentation and transmission of frame
*
* @wlp: WLP substack data structure
@ -447,20 +433,12 @@ int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb,
struct i1480u_tx *wtx;
struct wlp_tx_hdr *wlp_tx_hdr;
static unsigned char dev_bcast[2] = { 0xff, 0xff };
#if 0
int lockup = 50;
#endif
d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len,
net_dev);
BUG_ON(i1480u->wlp.rc == NULL);
if ((net_dev->flags & IFF_UP) == 0)
goto out;
result = -EBUSY;
if (atomic_read(&i1480u->tx_inflight.count) >= i1480u->tx_inflight.max) {
if (d_test(2) && printk_ratelimit())
d_printf(2, dev, "Max frames in flight "
"stopping queue.\n");
netif_stop_queue(net_dev);
goto error_max_inflight;
}
@ -489,21 +467,6 @@ int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb,
wlp_tx_hdr_set_delivery_id_type(wlp_tx_hdr, i1480u->options.pca_base_priority);
}
#if 0
dev_info(dev, "TX delivering skb -> USB, %zu bytes\n", skb->len);
dump_bytes(dev, skb->data, skb->len > 72 ? 72 : skb->len);
#endif
#if 0
/* simulates a device lockup after every lockup# packets */
if (lockup && ((i1480u->stats.tx_packets + 1) % lockup) == 0) {
/* Simulate a dropped transmit interrupt */
net_dev->trans_start = jiffies;
netif_stop_queue(net_dev);
dev_err(dev, "Simulate lockup at %ld\n", jiffies);
return result;
}
#endif
result = usb_submit_urb(wtx->urb, GFP_ATOMIC); /* Go baby */
if (result < 0) {
dev_err(dev, "TX: cannot submit URB: %d\n", result);
@ -513,8 +476,6 @@ int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb,
}
atomic_inc(&i1480u->tx_inflight.count);
net_dev->trans_start = jiffies;
d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
net_dev, result);
return result;
error_tx_urb_submit:
@ -522,13 +483,11 @@ int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb,
error_wtx_alloc:
error_max_inflight:
out:
d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
net_dev, result);
return result;
}
/**
/*
* Transmit an skb Called when an skbuf has to be transmitted
*
* The skb is first passed to WLP substack to ensure this is a valid
@ -551,9 +510,6 @@ int i1480u_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
struct device *dev = &i1480u->usb_iface->dev;
struct uwb_dev_addr dst;
d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len,
net_dev);
BUG_ON(i1480u->wlp.rc == NULL);
if ((net_dev->flags & IFF_UP) == 0)
goto error;
result = wlp_prepare_tx_frame(dev, &i1480u->wlp, skb, &dst);
@ -562,31 +518,25 @@ int i1480u_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
"Dropping packet.\n", result);
goto error;
} else if (result == 1) {
d_printf(6, dev, "WLP will transmit frame. \n");
/* trans_start time will be set when WLP actually transmits
* the frame */
goto out;
}
d_printf(6, dev, "Transmitting frame. \n");
result = i1480u_xmit_frame(&i1480u->wlp, skb, &dst);
if (result < 0) {
dev_err(dev, "Frame TX failed (%d).\n", result);
goto error;
}
d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
net_dev, result);
return NETDEV_TX_OK;
error:
dev_kfree_skb_any(skb);
i1480u->stats.tx_dropped++;
out:
d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
net_dev, result);
return NETDEV_TX_OK;
}
/**
/*
* Called when a pkt transmission doesn't complete in a reasonable period
* Device reset may sleep - do it outside of interrupt context (delayed)
*/

55
drivers/uwb/ie-rcv.c Normal file
View File

@ -0,0 +1,55 @@
/*
* Ultra Wide Band
* IE Received notification handling.
*
* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/bitmap.h>
#include "uwb-internal.h"
/*
* Process an incoming IE Received notification.
*/
int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt)
{
int result = -EINVAL;
struct device *dev = &evt->rc->uwb_dev.dev;
struct uwb_rc_evt_ie_rcv *iercv;
size_t iesize;
/* Is there enough data to decode it? */
if (evt->notif.size < sizeof(*iercv)) {
dev_err(dev, "IE Received notification: Not enough data to "
"decode (%zu vs %zu bytes needed)\n",
evt->notif.size, sizeof(*iercv));
goto error;
}
iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb);
iesize = le16_to_cpu(iercv->wIELength);
dev_dbg(dev, "IE received, element ID=%d\n", iercv->IEData[0]);
if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) {
dev_warn(dev, "unhandled Relinquish Request IE\n");
}
return 0;
error:
return result;
}

457
drivers/uwb/ie.c
View File

@ -25,8 +25,6 @@
*/
#include "uwb-internal.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/**
* uwb_ie_next - get the next IE in a buffer
@ -60,6 +58,42 @@ struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len)
}
EXPORT_SYMBOL_GPL(uwb_ie_next);
/**
* uwb_ie_dump_hex - print IEs to a character buffer
* @ies: the IEs to print.
* @len: length of all the IEs.
* @buf: the destination buffer.
* @size: size of @buf.
*
* Returns the number of characters written.
*/
int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len,
char *buf, size_t size)
{
void *ptr;
const struct uwb_ie_hdr *ie;
int r = 0;
u8 *d;
ptr = (void *)ies;
for (;;) {
ie = uwb_ie_next(&ptr, &len);
if (!ie)
break;
r += scnprintf(buf + r, size - r, "%02x %02x",
(unsigned)ie->element_id,
(unsigned)ie->length);
d = (uint8_t *)ie + sizeof(struct uwb_ie_hdr);
while (d != ptr && r < size)
r += scnprintf(buf + r, size - r, " %02x", (unsigned)*d++);
if (r < size)
buf[r++] = '\n';
};
return r;
}
/**
* Get the IEs that a radio controller is sending in its beacon
*
@ -70,6 +104,7 @@ EXPORT_SYMBOL_GPL(uwb_ie_next);
* anything. Once done with the iedata buffer, call
* uwb_rc_ie_release(iedata). Don't call kfree on it.
*/
static
ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie)
{
ssize_t result;
@ -78,148 +113,35 @@ ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie)
struct uwb_rceb *reply = NULL;
struct uwb_rc_evt_get_ie *get_ie;
d_fnstart(3, dev, "(%p, %p)\n", uwb_rc, pget_ie);
result = -ENOMEM;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
goto error_kzalloc;
return -ENOMEM;
cmd->bCommandType = UWB_RC_CET_GENERAL;
cmd->wCommand = cpu_to_le16(UWB_RC_CMD_GET_IE);
result = uwb_rc_vcmd(uwb_rc, "GET_IE", cmd, sizeof(*cmd),
UWB_RC_CET_GENERAL, UWB_RC_CMD_GET_IE,
&reply);
kfree(cmd);
if (result < 0)
goto error_cmd;
return result;
get_ie = container_of(reply, struct uwb_rc_evt_get_ie, rceb);
if (result < sizeof(*get_ie)) {
dev_err(dev, "not enough data returned for decoding GET IE "
"(%zu bytes received vs %zu needed)\n",
result, sizeof(*get_ie));
result = -EINVAL;
return -EINVAL;
} else if (result < sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)) {
dev_err(dev, "not enough data returned for decoding GET IE "
"payload (%zu bytes received vs %zu needed)\n", result,
sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength));
result = -EINVAL;
} else
*pget_ie = get_ie;
error_cmd:
kfree(cmd);
error_kzalloc:
d_fnend(3, dev, "(%p, %p) = %d\n", uwb_rc, pget_ie, (int)result);
return result;
}
EXPORT_SYMBOL_GPL(uwb_rc_get_ie);
/*
* Given a pointer to an IE, print it in ASCII/hex followed by a new line
*
* @ie_hdr: pointer to the IE header. Length is in there, and it is
* guaranteed that the ie_hdr->length bytes following it are
* safely accesible.
*
* @_data: context data passed from uwb_ie_for_each(), an struct output_ctx
*/
int uwb_ie_dump_hex(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
size_t offset, void *_ctx)
{
struct uwb_buf_ctx *ctx = _ctx;
const u8 *pl = (void *)(ie_hdr + 1);
u8 pl_itr;
ctx->bytes += scnprintf(ctx->buf + ctx->bytes, ctx->size - ctx->bytes,
"%02x %02x ", (unsigned) ie_hdr->element_id,
(unsigned) ie_hdr->length);
pl_itr = 0;
while (pl_itr < ie_hdr->length && ctx->bytes < ctx->size)
ctx->bytes += scnprintf(ctx->buf + ctx->bytes,
ctx->size - ctx->bytes,
"%02x ", (unsigned) pl[pl_itr++]);
if (ctx->bytes < ctx->size)
ctx->buf[ctx->bytes++] = '\n';
return 0;
}
EXPORT_SYMBOL_GPL(uwb_ie_dump_hex);
/**
* Verify that a pointer in a buffer points to valid IE
*
* @start: pointer to start of buffer in which IE appears
* @itr: pointer to IE inside buffer that will be verified
* @top: pointer to end of buffer
*
* @returns: 0 if IE is valid, <0 otherwise
*
* Verification involves checking that the buffer can contain a
* header and the amount of data reported in the IE header can be found in
* the buffer.
*/
static
int uwb_rc_ie_verify(struct uwb_dev *uwb_dev, const void *start,
const void *itr, const void *top)
{
struct device *dev = &uwb_dev->dev;
const struct uwb_ie_hdr *ie_hdr;
if (top - itr < sizeof(*ie_hdr)) {
dev_err(dev, "Bad IE: no data to decode header "
"(%zu bytes left vs %zu needed) at offset %zu\n",
top - itr, sizeof(*ie_hdr), itr - start);
return -EINVAL;
}
ie_hdr = itr;
itr += sizeof(*ie_hdr);
if (top - itr < ie_hdr->length) {
dev_err(dev, "Bad IE: not enough data for payload "
"(%zu bytes left vs %zu needed) at offset %zu\n",
top - itr, (size_t)ie_hdr->length,
(void *)ie_hdr - start);
return -EINVAL;
}
return 0;
}
/**
* Walk a buffer filled with consecutive IE's a buffer
*
* @uwb_dev: UWB device this IEs belong to (for err messages mainly)
*
* @fn: function to call with each IE; if it returns 0, we keep
* traversing the buffer. If it returns !0, we'll stop and return
* that value.
*
* @data: pointer passed to @fn
*
* @buf: buffer where the consecutive IEs are located
*
* @size: size of @buf
*
* Each IE is checked for basic correctness (there is space left for
* the header and the payload). If that test is failed, we stop
* processing. For every good IE, @fn is called.
*/
ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
const void *buf, size_t size)
{
ssize_t result = 0;
const struct uwb_ie_hdr *ie_hdr;
const void *itr = buf, *top = itr + size;
while (itr < top) {
if (uwb_rc_ie_verify(uwb_dev, buf, itr, top) != 0)
break;
ie_hdr = itr;
itr += sizeof(*ie_hdr) + ie_hdr->length;
result = fn(uwb_dev, ie_hdr, itr - buf, data);
if (result != 0)
break;
}
*pget_ie = get_ie;
return result;
}
EXPORT_SYMBOL_GPL(uwb_ie_for_each);
/**
@ -256,70 +178,6 @@ int uwb_rc_set_ie(struct uwb_rc *rc, struct uwb_rc_cmd_set_ie *cmd)
return result;
}
/**
* Determine by IE id if IE is host settable
* WUSB 1.0 [8.6.2.8 Table 8.85]
*
* EXCEPTION:
* All but UWB_IE_WLP appears in Table 8.85 from WUSB 1.0. Setting this IE
* is required for the WLP substack to perform association with its WSS so
* we hope that the WUSB spec will be changed to reflect this.
*/
static
int uwb_rc_ie_is_host_settable(enum uwb_ie element_id)
{
if (element_id == UWB_PCA_AVAILABILITY ||
element_id == UWB_BP_SWITCH_IE ||
element_id == UWB_MAC_CAPABILITIES_IE ||
element_id == UWB_PHY_CAPABILITIES_IE ||
element_id == UWB_APP_SPEC_PROBE_IE ||
element_id == UWB_IDENTIFICATION_IE ||
element_id == UWB_MASTER_KEY_ID_IE ||
element_id == UWB_IE_WLP ||
element_id == UWB_APP_SPEC_IE)
return 1;
return 0;
}
/**
* Extract Host Settable IEs from IE
*
* @ie_data: pointer to buffer containing all IEs
* @size: size of buffer
*
* @returns: length of buffer that only includes host settable IEs
*
* Given a buffer of IEs we move all Host Settable IEs to front of buffer
* by overwriting the IEs that are not Host Settable.
* Buffer length is adjusted accordingly.
*/
static
ssize_t uwb_rc_parse_host_settable_ie(struct uwb_dev *uwb_dev,
void *ie_data, size_t size)
{
size_t new_len = size;
struct uwb_ie_hdr *ie_hdr;
size_t ie_length;
void *itr = ie_data, *top = itr + size;
while (itr < top) {
if (uwb_rc_ie_verify(uwb_dev, ie_data, itr, top) != 0)
break;
ie_hdr = itr;
ie_length = sizeof(*ie_hdr) + ie_hdr->length;
if (uwb_rc_ie_is_host_settable(ie_hdr->element_id)) {
itr += ie_length;
} else {
memmove(itr, itr + ie_length, top - (itr + ie_length));
new_len -= ie_length;
top -= ie_length;
}
}
return new_len;
}
/* Cleanup the whole IE management subsystem */
void uwb_rc_ie_init(struct uwb_rc *uwb_rc)
{
@ -328,49 +186,34 @@ void uwb_rc_ie_init(struct uwb_rc *uwb_rc)
/**
* Set up cache for host settable IEs currently being transmitted
* uwb_rc_ie_setup - setup a radio controller's IE manager
* @uwb_rc: the radio controller.
*
* First we just call GET-IE to get the current IEs being transmitted
* (or we workaround and pretend we did) and (because the format is
* the same) reuse that as the IE cache (with the command prefix, as
* explained in 'struct uwb_rc').
* The current set of IEs are obtained from the hardware with a GET-IE
* command (since the radio controller is not yet beaconing this will
* be just the hardware's MAC and PHY Capability IEs).
*
* @returns: size of cache created
* Returns 0 on success; -ve on an error.
*/
ssize_t uwb_rc_ie_setup(struct uwb_rc *uwb_rc)
int uwb_rc_ie_setup(struct uwb_rc *uwb_rc)
{
struct device *dev = &uwb_rc->uwb_dev.dev;
ssize_t result;
size_t capacity;
struct uwb_rc_evt_get_ie *ie_info;
struct uwb_rc_evt_get_ie *ie_info = NULL;
int capacity;
capacity = uwb_rc_get_ie(uwb_rc, &ie_info);
if (capacity < 0)
return capacity;
d_fnstart(3, dev, "(%p)\n", uwb_rc);
mutex_lock(&uwb_rc->ies_mutex);
result = uwb_rc_get_ie(uwb_rc, &ie_info);
if (result < 0)
goto error_get_ie;
capacity = result;
d_printf(5, dev, "Got IEs %zu bytes (%zu long at %p)\n", result,
(size_t)le16_to_cpu(ie_info->wIELength), ie_info);
/* Remove IEs that host should not set. */
result = uwb_rc_parse_host_settable_ie(&uwb_rc->uwb_dev,
ie_info->IEData, le16_to_cpu(ie_info->wIELength));
if (result < 0)
goto error_parse;
d_printf(5, dev, "purged non-settable IEs to %zu bytes\n", result);
uwb_rc->ies = (void *) ie_info;
uwb_rc->ies = (struct uwb_rc_cmd_set_ie *)ie_info;
uwb_rc->ies->rccb.bCommandType = UWB_RC_CET_GENERAL;
uwb_rc->ies->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_IE);
uwb_rc->ies_capacity = capacity;
d_printf(5, dev, "IE cache at %p %zu bytes, %zu capacity\n",
ie_info, result, capacity);
result = 0;
error_parse:
error_get_ie:
mutex_unlock(&uwb_rc->ies_mutex);
d_fnend(3, dev, "(%p) = %zu\n", uwb_rc, result);
return result;
return 0;
}
@ -383,26 +226,47 @@ void uwb_rc_ie_release(struct uwb_rc *uwb_rc)
}
static
int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
size_t offset, void *_ctx)
static int uwb_rc_ie_add_one(struct uwb_rc *rc, const struct uwb_ie_hdr *new_ie)
{
size_t *acc_size = _ctx;
*acc_size += sizeof(*ie_hdr) + ie_hdr->length;
d_printf(6, &uwb_dev->dev, "new acc size %zu\n", *acc_size);
struct uwb_rc_cmd_set_ie *new_ies;
void *ptr, *prev_ie;
struct uwb_ie_hdr *ie;
size_t length, new_ie_len, new_capacity, size, prev_size;
length = le16_to_cpu(rc->ies->wIELength);
new_ie_len = sizeof(struct uwb_ie_hdr) + new_ie->length;
new_capacity = sizeof(struct uwb_rc_cmd_set_ie) + length + new_ie_len;
if (new_capacity > rc->ies_capacity) {
new_ies = krealloc(rc->ies, new_capacity, GFP_KERNEL);
if (!new_ies)
return -ENOMEM;
rc->ies = new_ies;
}
ptr = rc->ies->IEData;
size = length;
for (;;) {
prev_ie = ptr;
prev_size = size;
ie = uwb_ie_next(&ptr, &size);
if (!ie || ie->element_id > new_ie->element_id)
break;
}
memmove(prev_ie + new_ie_len, prev_ie, prev_size);
memcpy(prev_ie, new_ie, new_ie_len);
rc->ies->wIELength = cpu_to_le16(length + new_ie_len);
return 0;
}
/**
* Add a new IE to IEs currently being transmitted by device
*
* uwb_rc_ie_add - add new IEs to the radio controller's beacon
* @uwb_rc: the radio controller.
* @ies: the buffer containing the new IE or IEs to be added to
* the device's beacon. The buffer will be verified for
* consistence (meaning the headers should be right) and
* consistent with the buffer size.
* @size: size of @ies (in bytes, total buffer size)
* @returns: 0 if ok, <0 errno code on error
* the device's beacon.
* @size: length of all the IEs.
*
* According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB
* after the device sent the first beacon that includes the IEs specified
@ -411,66 +275,40 @@ int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
* we start beaconing.
*
* Setting an IE on the device will overwrite all current IEs in device. So
* we take the current IEs being transmitted by the device, append the
* we take the current IEs being transmitted by the device, insert the
* new one, and call SET IE with all the IEs needed.
*
* The local IE cache will only be updated with the new IE if SET IE
* completed successfully.
* Returns 0 on success; or -ENOMEM.
*/
int uwb_rc_ie_add(struct uwb_rc *uwb_rc,
const struct uwb_ie_hdr *ies, size_t size)
{
int result = 0;
struct device *dev = &uwb_rc->uwb_dev.dev;
struct uwb_rc_cmd_set_ie *new_ies;
size_t ies_size, total_size, acc_size = 0;
void *ptr;
const struct uwb_ie_hdr *ie;
if (uwb_rc->ies == NULL)
return -ESHUTDOWN;
uwb_ie_for_each(&uwb_rc->uwb_dev, __acc_size, &acc_size, ies, size);
if (acc_size != size) {
dev_err(dev, "BUG: bad IEs, misconstructed headers "
"[%zu bytes reported vs %zu calculated]\n",
size, acc_size);
WARN_ON(1);
return -EINVAL;
}
mutex_lock(&uwb_rc->ies_mutex);
ies_size = le16_to_cpu(uwb_rc->ies->wIELength);
total_size = sizeof(*uwb_rc->ies) + ies_size;
if (total_size + size > uwb_rc->ies_capacity) {
d_printf(4, dev, "Reallocating IE cache from %p capacity %zu "
"to capacity %zu\n", uwb_rc->ies, uwb_rc->ies_capacity,
total_size + size);
new_ies = kzalloc(total_size + size, GFP_KERNEL);
if (new_ies == NULL) {
dev_err(dev, "No memory for adding new IE\n");
result = -ENOMEM;
goto error_alloc;
}
memcpy(new_ies, uwb_rc->ies, total_size);
uwb_rc->ies_capacity = total_size + size;
kfree(uwb_rc->ies);
uwb_rc->ies = new_ies;
d_printf(4, dev, "New IE cache at %p capacity %zu\n",
uwb_rc->ies, uwb_rc->ies_capacity);
ptr = (void *)ies;
for (;;) {
ie = uwb_ie_next(&ptr, &size);
if (!ie)
break;
result = uwb_rc_ie_add_one(uwb_rc, ie);
if (result < 0)
break;
}
memcpy((void *)uwb_rc->ies + total_size, ies, size);
uwb_rc->ies->wIELength = cpu_to_le16(ies_size + size);
if (uwb_rc->beaconing != -1) {
result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
if (result < 0) {
dev_err(dev, "Cannot set new IE on device: %d\n",
result);
uwb_rc->ies->wIELength = cpu_to_le16(ies_size);
if (result >= 0) {
if (size == 0) {
if (uwb_rc->beaconing != -1)
result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
} else
result = 0;
result = -EINVAL;
}
d_printf(4, dev, "IEs now occupy %hu bytes of %zu capacity at %p\n",
le16_to_cpu(uwb_rc->ies->wIELength), uwb_rc->ies_capacity,
uwb_rc->ies);
error_alloc:
mutex_unlock(&uwb_rc->ies_mutex);
return result;
}
EXPORT_SYMBOL_GPL(uwb_rc_ie_add);
@ -489,53 +327,52 @@ EXPORT_SYMBOL_GPL(uwb_rc_ie_add);
* beacon. We don't reallocate, we just mark the size smaller.
*/
static
int uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove)
void uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove)
{
struct uwb_ie_hdr *ie_hdr;
size_t new_len = le16_to_cpu(uwb_rc->ies->wIELength);
void *itr = uwb_rc->ies->IEData;
void *top = itr + new_len;
struct uwb_ie_hdr *ie;
size_t len = le16_to_cpu(uwb_rc->ies->wIELength);
void *ptr;
size_t size;
while (itr < top) {
ie_hdr = itr;
if (ie_hdr->element_id != to_remove) {
itr += sizeof(*ie_hdr) + ie_hdr->length;
} else {
int ie_length;
ie_length = sizeof(*ie_hdr) + ie_hdr->length;
if (top - itr != ie_length)
memmove(itr, itr + ie_length, top - itr + ie_length);
top -= ie_length;
new_len -= ie_length;
ptr = uwb_rc->ies->IEData;
size = len;
for (;;) {
ie = uwb_ie_next(&ptr, &size);
if (!ie)
break;
if (ie->element_id == to_remove) {
len -= sizeof(struct uwb_ie_hdr) + ie->length;
memmove(ie, ptr, size);
ptr = ie;
}
}
uwb_rc->ies->wIELength = cpu_to_le16(new_len);
return 0;
uwb_rc->ies->wIELength = cpu_to_le16(len);
}
/**
* Remove an IE currently being transmitted by device
* uwb_rc_ie_rm - remove an IE from the radio controller's beacon
* @uwb_rc: the radio controller.
* @element_id: the element ID of the IE to remove.
*
* @element_id: id of IE to be removed from device's beacon
* Only IEs previously added with uwb_rc_ie_add() may be removed.
*
* Returns 0 on success; or -ve the SET-IE command to the radio
* controller failed.
*/
int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id)
{
struct device *dev = &uwb_rc->uwb_dev.dev;
int result;
int result = 0;
if (uwb_rc->ies == NULL)
return -ESHUTDOWN;
mutex_lock(&uwb_rc->ies_mutex);
result = uwb_rc_ie_cache_rm(uwb_rc, element_id);
if (result < 0)
dev_err(dev, "Cannot remove IE from cache.\n");
if (uwb_rc->beaconing != -1) {
uwb_rc_ie_cache_rm(uwb_rc, element_id);
if (uwb_rc->beaconing != -1)
result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
if (result < 0)
dev_err(dev, "Cannot set new IE on device.\n");
}
mutex_unlock(&uwb_rc->ies_mutex);
return result;
}
EXPORT_SYMBOL_GPL(uwb_rc_ie_rm);

23
drivers/uwb/lc-dev.c
View File

@ -22,7 +22,6 @@
*
* FIXME: docs
*/
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/err.h>
@ -30,10 +29,6 @@
#include <linux/random.h>
#include "uwb-internal.h"
#define D_LOCAL 1
#include <linux/uwb/debug.h>
/* We initialize addresses to 0xff (invalid, as it is bcast) */
static inline void uwb_dev_addr_init(struct uwb_dev_addr *addr)
{
@ -104,12 +99,9 @@ static void uwb_dev_sys_release(struct device *dev)
{
struct uwb_dev *uwb_dev = to_uwb_dev(dev);
d_fnstart(4, NULL, "(dev %p uwb_dev %p)\n", dev, uwb_dev);
uwb_bce_put(uwb_dev->bce);
d_printf(0, &uwb_dev->dev, "uwb_dev %p freed\n", uwb_dev);
memset(uwb_dev, 0x69, sizeof(*uwb_dev));
kfree(uwb_dev);
d_fnend(4, NULL, "(dev %p uwb_dev %p) = void\n", dev, uwb_dev);
}
/*
@ -275,12 +267,8 @@ static struct attribute_group *groups[] = {
*/
static int __uwb_dev_sys_add(struct uwb_dev *uwb_dev, struct device *parent_dev)
{
int result;
struct device *dev;
d_fnstart(4, NULL, "(uwb_dev %p parent_dev %p)\n", uwb_dev, parent_dev);
BUG_ON(parent_dev == NULL);
dev = &uwb_dev->dev;
/* Device sysfs files are only useful for neighbor devices not
local radio controllers. */
@ -289,18 +277,14 @@ static int __uwb_dev_sys_add(struct uwb_dev *uwb_dev, struct device *parent_dev)
dev->parent = parent_dev;
dev_set_drvdata(dev, uwb_dev);
result = device_add(dev);
d_fnend(4, NULL, "(uwb_dev %p parent_dev %p) = %d\n", uwb_dev, parent_dev, result);
return result;
return device_add(dev);
}
static void __uwb_dev_sys_rm(struct uwb_dev *uwb_dev)
{
d_fnstart(4, NULL, "(uwb_dev %p)\n", uwb_dev);
dev_set_drvdata(&uwb_dev->dev, NULL);
device_del(&uwb_dev->dev);
d_fnend(4, NULL, "(uwb_dev %p) = void\n", uwb_dev);
}
@ -384,7 +368,6 @@ int __uwb_dev_offair(struct uwb_dev *uwb_dev, struct uwb_rc *rc)
struct device *dev = &uwb_dev->dev;
char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
d_fnstart(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p)\n", dev, uwb_dev, rc);
uwb_mac_addr_print(macbuf, sizeof(macbuf), &uwb_dev->mac_addr);
uwb_dev_addr_print(devbuf, sizeof(devbuf), &uwb_dev->dev_addr);
dev_info(dev, "uwb device (mac %s dev %s) disconnected from %s %s\n",
@ -392,8 +375,10 @@ int __uwb_dev_offair(struct uwb_dev *uwb_dev, struct uwb_rc *rc)
rc ? rc->uwb_dev.dev.parent->bus->name : "n/a",
rc ? dev_name(rc->uwb_dev.dev.parent) : "");
uwb_dev_rm(uwb_dev);
list_del(&uwb_dev->bce->node);
uwb_bce_put(uwb_dev->bce);
uwb_dev_put(uwb_dev); /* for the creation in _onair() */
d_fnend(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p) = 0\n", dev, uwb_dev, rc);
return 0;
}

62
drivers/uwb/lc-rc.c
View File

@ -36,8 +36,6 @@
#include <linux/etherdevice.h>
#include <linux/usb.h>
#define D_LOCAL 1
#include <linux/uwb/debug.h>
#include "uwb-internal.h"
static int uwb_rc_index_match(struct device *dev, void *data)
@ -81,9 +79,7 @@ static void uwb_rc_sys_release(struct device *dev)
struct uwb_dev *uwb_dev = container_of(dev, struct uwb_dev, dev);
struct uwb_rc *rc = container_of(uwb_dev, struct uwb_rc, uwb_dev);
uwb_rc_neh_destroy(rc);
uwb_rc_ie_release(rc);
d_printf(1, dev, "freed uwb_rc %p\n", rc);
kfree(rc);
}
@ -100,6 +96,8 @@ void uwb_rc_init(struct uwb_rc *rc)
rc->scan_type = UWB_SCAN_DISABLED;
INIT_LIST_HEAD(&rc->notifs_chain.list);
mutex_init(&rc->notifs_chain.mutex);
INIT_LIST_HEAD(&rc->uwb_beca.list);
mutex_init(&rc->uwb_beca.mutex);
uwb_drp_avail_init(rc);
uwb_rc_ie_init(rc);
uwb_rsv_init(rc);
@ -191,9 +189,9 @@ static int uwb_rc_setup(struct uwb_rc *rc)
int result;
struct device *dev = &rc->uwb_dev.dev;
result = uwb_rc_reset(rc);
result = uwb_radio_setup(rc);
if (result < 0) {
dev_err(dev, "cannot reset UWB radio: %d\n", result);
dev_err(dev, "cannot setup UWB radio: %d\n", result);
goto error;
}
result = uwb_rc_mac_addr_setup(rc);
@ -250,6 +248,12 @@ int uwb_rc_add(struct uwb_rc *rc, struct device *parent_dev, void *priv)
rc->priv = priv;
init_waitqueue_head(&rc->uwbd.wq);
INIT_LIST_HEAD(&rc->uwbd.event_list);
spin_lock_init(&rc->uwbd.event_list_lock);
uwbd_start(rc);
result = rc->start(rc);
if (result < 0)
goto error_rc_start;
@ -284,7 +288,7 @@ int uwb_rc_add(struct uwb_rc *rc, struct device *parent_dev, void *priv)
error_dev_add:
error_rc_setup:
rc->stop(rc);
uwbd_flush(rc);
uwbd_stop(rc);
error_rc_start:
return result;
}
@ -306,25 +310,24 @@ void uwb_rc_rm(struct uwb_rc *rc)
rc->ready = 0;
uwb_dbg_del_rc(rc);
uwb_rsv_cleanup(rc);
uwb_rc_ie_rm(rc, UWB_IDENTIFICATION_IE);
if (rc->beaconing >= 0)
uwb_rc_beacon(rc, -1, 0);
if (rc->scan_type != UWB_SCAN_DISABLED)
uwb_rc_scan(rc, rc->scanning, UWB_SCAN_DISABLED, 0);
uwb_rc_reset(rc);
uwb_rsv_remove_all(rc);
uwb_radio_shutdown(rc);
rc->stop(rc);
uwbd_flush(rc);
uwbd_stop(rc);
uwb_rc_neh_destroy(rc);
uwb_dev_lock(&rc->uwb_dev);
rc->priv = NULL;
rc->cmd = NULL;
uwb_dev_unlock(&rc->uwb_dev);
mutex_lock(&uwb_beca.mutex);
mutex_lock(&rc->uwb_beca.mutex);
uwb_dev_for_each(rc, uwb_dev_offair_helper, NULL);
__uwb_rc_sys_rm(rc);
mutex_unlock(&uwb_beca.mutex);
mutex_unlock(&rc->uwb_beca.mutex);
uwb_rsv_cleanup(rc);
uwb_beca_release(rc);
uwb_dev_rm(&rc->uwb_dev);
}
EXPORT_SYMBOL_GPL(uwb_rc_rm);
@ -468,28 +471,3 @@ void uwb_rc_put(struct uwb_rc *rc)
__uwb_rc_put(rc);
}
EXPORT_SYMBOL_GPL(uwb_rc_put);
/*
*
*
*/
ssize_t uwb_rc_print_IEs(struct uwb_rc *uwb_rc, char *buf, size_t size)
{
ssize_t result;
struct uwb_rc_evt_get_ie *ie_info;
struct uwb_buf_ctx ctx;
result = uwb_rc_get_ie(uwb_rc, &ie_info);
if (result < 0)
goto error_get_ie;
ctx.buf = buf;
ctx.size = size;
ctx.bytes = 0;
uwb_ie_for_each(&uwb_rc->uwb_dev, uwb_ie_dump_hex, &ctx,
ie_info->IEData, result - sizeof(*ie_info));
result = ctx.bytes;
kfree(ie_info);
error_get_ie:
return result;
}

72
drivers/uwb/neh.c
View File

@ -86,8 +86,6 @@
#include <linux/err.h>
#include "uwb-internal.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/*
* UWB Radio Controller Notification/Event Handle
@ -254,7 +252,6 @@ struct uwb_rc_neh *uwb_rc_neh_add(struct uwb_rc *rc, struct uwb_rccb *cmd,
static void __uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
{
del_timer(&neh->timer);
__uwb_rc_ctx_put(rc, neh);
list_del(&neh->list_node);
}
@ -275,6 +272,7 @@ void uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
__uwb_rc_neh_rm(rc, neh);
spin_unlock_irqrestore(&rc->neh_lock, flags);
del_timer_sync(&neh->timer);
uwb_rc_neh_put(neh);
}
@ -349,7 +347,7 @@ struct uwb_rc_neh *uwb_rc_neh_lookup(struct uwb_rc *rc,
}
/**
/*
* Process notifications coming from the radio control interface
*
* @rc: UWB Radio Control Interface descriptor
@ -401,23 +399,6 @@ void uwb_rc_notif(struct uwb_rc *rc, struct uwb_rceb *rceb, ssize_t size)
uwb_evt->notif.size = size;
uwb_evt->notif.rceb = rceb;
switch (le16_to_cpu(rceb->wEvent)) {
/* Trap some vendor specific events
*
* FIXME: move this to handling in ptc-est, where we
* register a NULL event handler for these two guys
* using the Intel IDs.
*/
case 0x0103:
dev_info(dev, "FIXME: DEVICE ADD\n");
return;
case 0x0104:
dev_info(dev, "FIXME: DEVICE RM\n");
return;
default:
break;
}
uwbd_event_queue(uwb_evt);
}
@ -438,9 +419,10 @@ static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size
rceb->bEventContext, size);
} else {
neh = uwb_rc_neh_lookup(rc, rceb);
if (neh)
if (neh) {
del_timer_sync(&neh->timer);
uwb_rc_neh_cb(neh, rceb, size);
else
} else
dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n",
rceb->bEventType, le16_to_cpu(rceb->wEvent),
rceb->bEventContext, size);
@ -495,8 +477,6 @@ void uwb_rc_neh_grok(struct uwb_rc *rc, void *buf, size_t buf_size)
size_t size, real_size, event_size;
int needtofree;
d_fnstart(3, dev, "(rc %p buf %p %zu buf_size)\n", rc, buf, buf_size);
d_printf(2, dev, "groking event block: %zu bytes\n", buf_size);
itr = buf;
size = buf_size;
while (size > 0) {
@ -544,10 +524,7 @@ void uwb_rc_neh_grok(struct uwb_rc *rc, void *buf, size_t buf_size)
itr += real_size;
size -= real_size;
d_printf(2, dev, "consumed %zd bytes, %zu left\n",
event_size, size);
}
d_fnend(3, dev, "(rc %p buf %p %zu buf_size) = void\n", rc, buf, buf_size);
}
EXPORT_SYMBOL_GPL(uwb_rc_neh_grok);
@ -562,16 +539,22 @@ EXPORT_SYMBOL_GPL(uwb_rc_neh_grok);
*/
void uwb_rc_neh_error(struct uwb_rc *rc, int error)
{
struct uwb_rc_neh *neh, *next;
struct uwb_rc_neh *neh;
unsigned long flags;
BUG_ON(error >= 0);
spin_lock_irqsave(&rc->neh_lock, flags);
list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
for (;;) {
spin_lock_irqsave(&rc->neh_lock, flags);
if (list_empty(&rc->neh_list)) {
spin_unlock_irqrestore(&rc->neh_lock, flags);
break;
}
neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node);
__uwb_rc_neh_rm(rc, neh);
spin_unlock_irqrestore(&rc->neh_lock, flags);
del_timer_sync(&neh->timer);
uwb_rc_neh_cb(neh, NULL, error);
}
spin_unlock_irqrestore(&rc->neh_lock, flags);
}
EXPORT_SYMBOL_GPL(uwb_rc_neh_error);
@ -583,10 +566,14 @@ static void uwb_rc_neh_timer(unsigned long arg)
unsigned long flags;
spin_lock_irqsave(&rc->neh_lock, flags);
__uwb_rc_neh_rm(rc, neh);
if (neh->context)
__uwb_rc_neh_rm(rc, neh);
else
neh = NULL;
spin_unlock_irqrestore(&rc->neh_lock, flags);
uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT);
if (neh)
uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT);
}
/** Initializes the @rc's neh subsystem
@ -605,12 +592,19 @@ void uwb_rc_neh_create(struct uwb_rc *rc)
void uwb_rc_neh_destroy(struct uwb_rc *rc)
{
unsigned long flags;
struct uwb_rc_neh *neh, *next;
struct uwb_rc_neh *neh;
spin_lock_irqsave(&rc->neh_lock, flags);
list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
for (;;) {
spin_lock_irqsave(&rc->neh_lock, flags);
if (list_empty(&rc->neh_list)) {
spin_unlock_irqrestore(&rc->neh_lock, flags);
break;
}
neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node);
__uwb_rc_neh_rm(rc, neh);
spin_unlock_irqrestore(&rc->neh_lock, flags);
del_timer_sync(&neh->timer);
uwb_rc_neh_put(neh);
}
spin_unlock_irqrestore(&rc->neh_lock, flags);
}

25
drivers/uwb/pal.c
View File

@ -16,6 +16,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kernel.h>
#include <linux/debugfs.h>
#include <linux/uwb.h>
#include "uwb-internal.h"
@ -32,13 +33,13 @@ EXPORT_SYMBOL_GPL(uwb_pal_init);
/**
* uwb_pal_register - register a UWB PAL
* @rc: the radio controller the PAL will be using
* @pal: the PAL
*
* The PAL must be initialized with uwb_pal_init().
*/
int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal)
int uwb_pal_register(struct uwb_pal *pal)
{
struct uwb_rc *rc = pal->rc;
int ret;
if (pal->device) {
@ -54,9 +55,11 @@ int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal)
}
}
spin_lock(&rc->pal_lock);
pal->debugfs_dir = uwb_dbg_create_pal_dir(pal);
mutex_lock(&rc->uwb_dev.mutex);
list_add(&pal->node, &rc->pals);
spin_unlock(&rc->pal_lock);
mutex_unlock(&rc->uwb_dev.mutex);
return 0;
}
@ -64,14 +67,19 @@ EXPORT_SYMBOL_GPL(uwb_pal_register);
/**
* uwb_pal_register - unregister a UWB PAL
* @rc: the radio controller the PAL was using
* @pal: the PAL
*/
void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal)
void uwb_pal_unregister(struct uwb_pal *pal)
{
spin_lock(&rc->pal_lock);
struct uwb_rc *rc = pal->rc;
uwb_radio_stop(pal);
mutex_lock(&rc->uwb_dev.mutex);
list_del(&pal->node);
spin_unlock(&rc->pal_lock);
mutex_unlock(&rc->uwb_dev.mutex);
debugfs_remove(pal->debugfs_dir);
if (pal->device) {
sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name);
@ -86,6 +94,5 @@ EXPORT_SYMBOL_GPL(uwb_pal_unregister);
*/
void uwb_rc_pal_init(struct uwb_rc *rc)
{
spin_lock_init(&rc->pal_lock);
INIT_LIST_HEAD(&rc->pals);
}

202
drivers/uwb/radio.c Normal file
View File

@ -0,0 +1,202 @@
/*
* UWB radio (channel) management.
*
* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kernel.h>
#include <linux/uwb.h>
#include "uwb-internal.h"
static int uwb_radio_select_channel(struct uwb_rc *rc)
{
/*
* Default to channel 9 (BG1, TFC1) unless the user has
* selected a specific channel or there are no active PALs.
*/
if (rc->active_pals == 0)
return -1;
if (rc->beaconing_forced)
return rc->beaconing_forced;
return 9;
}
/*
* Notify all active PALs that the channel has changed.
*/
static void uwb_radio_channel_changed(struct uwb_rc *rc, int channel)
{
struct uwb_pal *pal;
list_for_each_entry(pal, &rc->pals, node) {
if (pal->channel && channel != pal->channel) {
pal->channel = channel;
if (pal->channel_changed)
pal->channel_changed(pal, pal->channel);
}
}
}
/*
* Change to a new channel and notify any active PALs of the new
* channel.
*
* When stopping the radio, PALs need to be notified first so they can
* terminate any active reservations.
*/
static int uwb_radio_change_channel(struct uwb_rc *rc, int channel)
{
int ret = 0;
if (channel == -1)
uwb_radio_channel_changed(rc, channel);
if (channel != rc->beaconing) {
if (rc->beaconing != -1 && channel != -1) {
/*
* FIXME: should signal the channel change
* with a Channel Change IE.
*/
ret = uwb_radio_change_channel(rc, -1);
if (ret < 0)
return ret;
}
ret = uwb_rc_beacon(rc, channel, 0);
}
if (channel != -1)
uwb_radio_channel_changed(rc, rc->beaconing);
return ret;
}
/**
* uwb_radio_start - request that the radio be started
* @pal: the PAL making the request.
*
* If the radio is not already active, aa suitable channel is selected
* and beacons are started.
*/
int uwb_radio_start(struct uwb_pal *pal)
{
struct uwb_rc *rc = pal->rc;
int ret = 0;
mutex_lock(&rc->uwb_dev.mutex);
if (!pal->channel) {
pal->channel = -1;
rc->active_pals++;
ret = uwb_radio_change_channel(rc, uwb_radio_select_channel(rc));
}
mutex_unlock(&rc->uwb_dev.mutex);
return ret;
}
EXPORT_SYMBOL_GPL(uwb_radio_start);
/**
* uwb_radio_stop - request tha the radio be stopped.
* @pal: the PAL making the request.
*
* Stops the radio if no other PAL is making use of it.
*/
void uwb_radio_stop(struct uwb_pal *pal)
{
struct uwb_rc *rc = pal->rc;
mutex_lock(&rc->uwb_dev.mutex);
if (pal->channel) {
rc->active_pals--;
uwb_radio_change_channel(rc, uwb_radio_select_channel(rc));
pal->channel = 0;
}
mutex_unlock(&rc->uwb_dev.mutex);
}
EXPORT_SYMBOL_GPL(uwb_radio_stop);
/*
* uwb_radio_force_channel - force a specific channel to be used
* @rc: the radio controller.
* @channel: the channel to use; -1 to force the radio to stop; 0 to
* use the default channel selection algorithm.
*/
int uwb_radio_force_channel(struct uwb_rc *rc, int channel)
{
int ret = 0;
mutex_lock(&rc->uwb_dev.mutex);
rc->beaconing_forced = channel;
ret = uwb_radio_change_channel(rc, uwb_radio_select_channel(rc));
mutex_unlock(&rc->uwb_dev.mutex);
return ret;
}
/*
* uwb_radio_setup - setup the radio manager
* @rc: the radio controller.
*
* The radio controller is reset to ensure it's in a known state
* before it's used.
*/
int uwb_radio_setup(struct uwb_rc *rc)
{
return uwb_rc_reset(rc);
}
/*
* uwb_radio_reset_state - reset any radio manager state
* @rc: the radio controller.
*
* All internal radio manager state is reset to values corresponding
* to a reset radio controller.
*/
void uwb_radio_reset_state(struct uwb_rc *rc)
{
struct uwb_pal *pal;
mutex_lock(&rc->uwb_dev.mutex);
list_for_each_entry(pal, &rc->pals, node) {
if (pal->channel) {
pal->channel = -1;
if (pal->channel_changed)
pal->channel_changed(pal, -1);
}
}
rc->beaconing = -1;
rc->scanning = -1;
mutex_unlock(&rc->uwb_dev.mutex);
}
/*
* uwb_radio_shutdown - shutdown the radio manager
* @rc: the radio controller.
*
* The radio controller is reset.
*/
void uwb_radio_shutdown(struct uwb_rc *rc)
{
uwb_radio_reset_state(rc);
uwb_rc_reset(rc);
}

47
drivers/uwb/reset.c
View File

@ -32,8 +32,6 @@
#include <linux/err.h>
#include "uwb-internal.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/**
* Command result codes (WUSB1.0[T8-69])
@ -323,17 +321,16 @@ int uwbd_msg_handle_reset(struct uwb_event *evt)
struct uwb_rc *rc = evt->rc;
int ret;
/* Need to prevent the RC hardware module going away while in
the rc->reset() call. */
if (!try_module_get(rc->owner))
return 0;
dev_info(&rc->uwb_dev.dev, "resetting radio controller\n");
ret = rc->reset(rc);
if (ret)
if (ret) {
dev_err(&rc->uwb_dev.dev, "failed to reset hardware: %d\n", ret);
module_put(rc->owner);
goto error;
}
return 0;
error:
/* Nothing can be done except try the reset again. */
uwb_rc_reset_all(rc);
return ret;
}
@ -360,3 +357,33 @@ void uwb_rc_reset_all(struct uwb_rc *rc)
uwbd_event_queue(evt);
}
EXPORT_SYMBOL_GPL(uwb_rc_reset_all);
void uwb_rc_pre_reset(struct uwb_rc *rc)
{
rc->stop(rc);
uwbd_flush(rc);
uwb_radio_reset_state(rc);
uwb_rsv_remove_all(rc);
}
EXPORT_SYMBOL_GPL(uwb_rc_pre_reset);
void uwb_rc_post_reset(struct uwb_rc *rc)
{
int ret;
ret = rc->start(rc);
if (ret)
goto error;
ret = uwb_rc_mac_addr_set(rc, &rc->uwb_dev.mac_addr);
if (ret)
goto error;
ret = uwb_rc_dev_addr_set(rc, &rc->uwb_dev.dev_addr);
if (ret)
goto error;
return;
error:
/* Nothing can be done except try the reset again. */
uwb_rc_reset_all(rc);
}
EXPORT_SYMBOL_GPL(uwb_rc_post_reset);

563
drivers/uwb/rsv.c
View File

@ -15,23 +15,33 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/uwb.h>
#include <linux/random.h>
#include "uwb-internal.h"
static void uwb_rsv_timer(unsigned long arg);
static const char *rsv_states[] = {
[UWB_RSV_STATE_NONE] = "none",
[UWB_RSV_STATE_O_INITIATED] = "initiated",
[UWB_RSV_STATE_O_PENDING] = "pending",
[UWB_RSV_STATE_O_MODIFIED] = "modified",
[UWB_RSV_STATE_O_ESTABLISHED] = "established",
[UWB_RSV_STATE_T_ACCEPTED] = "accepted",
[UWB_RSV_STATE_T_DENIED] = "denied",
[UWB_RSV_STATE_T_PENDING] = "pending",
[UWB_RSV_STATE_NONE] = "none ",
[UWB_RSV_STATE_O_INITIATED] = "o initiated ",
[UWB_RSV_STATE_O_PENDING] = "o pending ",
[UWB_RSV_STATE_O_MODIFIED] = "o modified ",
[UWB_RSV_STATE_O_ESTABLISHED] = "o established ",
[UWB_RSV_STATE_O_TO_BE_MOVED] = "o to be moved ",
[UWB_RSV_STATE_O_MOVE_EXPANDING] = "o move expanding",
[UWB_RSV_STATE_O_MOVE_COMBINING] = "o move combining",
[UWB_RSV_STATE_O_MOVE_REDUCING] = "o move reducing ",
[UWB_RSV_STATE_T_ACCEPTED] = "t accepted ",
[UWB_RSV_STATE_T_CONFLICT] = "t conflict ",
[UWB_RSV_STATE_T_PENDING] = "t pending ",
[UWB_RSV_STATE_T_DENIED] = "t denied ",
[UWB_RSV_STATE_T_RESIZED] = "t resized ",
[UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = "t expanding acc ",
[UWB_RSV_STATE_T_EXPANDING_CONFLICT] = "t expanding conf",
[UWB_RSV_STATE_T_EXPANDING_PENDING] = "t expanding pend",
[UWB_RSV_STATE_T_EXPANDING_DENIED] = "t expanding den ",
};
static const char *rsv_types[] = {
@ -42,6 +52,31 @@ static const char *rsv_types[] = {
[UWB_DRP_TYPE_PCA] = "pca",
};
bool uwb_rsv_has_two_drp_ies(struct uwb_rsv *rsv)
{
static const bool has_two_drp_ies[] = {
[UWB_RSV_STATE_O_INITIATED] = false,
[UWB_RSV_STATE_O_PENDING] = false,
[UWB_RSV_STATE_O_MODIFIED] = false,
[UWB_RSV_STATE_O_ESTABLISHED] = false,
[UWB_RSV_STATE_O_TO_BE_MOVED] = false,
[UWB_RSV_STATE_O_MOVE_COMBINING] = false,
[UWB_RSV_STATE_O_MOVE_REDUCING] = false,
[UWB_RSV_STATE_O_MOVE_EXPANDING] = true,
[UWB_RSV_STATE_T_ACCEPTED] = false,
[UWB_RSV_STATE_T_CONFLICT] = false,
[UWB_RSV_STATE_T_PENDING] = false,
[UWB_RSV_STATE_T_DENIED] = false,
[UWB_RSV_STATE_T_RESIZED] = false,
[UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = true,
[UWB_RSV_STATE_T_EXPANDING_CONFLICT] = true,
[UWB_RSV_STATE_T_EXPANDING_PENDING] = true,
[UWB_RSV_STATE_T_EXPANDING_DENIED] = true,
};
return has_two_drp_ies[rsv->state];
}
/**
* uwb_rsv_state_str - return a string for a reservation state
* @state: the reservation state.
@ -66,7 +101,7 @@ const char *uwb_rsv_type_str(enum uwb_drp_type type)
}
EXPORT_SYMBOL_GPL(uwb_rsv_type_str);
static void uwb_rsv_dump(struct uwb_rsv *rsv)
void uwb_rsv_dump(char *text, struct uwb_rsv *rsv)
{
struct device *dev = &rsv->rc->uwb_dev.dev;
struct uwb_dev_addr devaddr;
@ -82,6 +117,23 @@ static void uwb_rsv_dump(struct uwb_rsv *rsv)
dev_dbg(dev, "rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state));
}
static void uwb_rsv_release(struct kref *kref)
{
struct uwb_rsv *rsv = container_of(kref, struct uwb_rsv, kref);
kfree(rsv);
}
void uwb_rsv_get(struct uwb_rsv *rsv)
{
kref_get(&rsv->kref);
}
void uwb_rsv_put(struct uwb_rsv *rsv)
{
kref_put(&rsv->kref, uwb_rsv_release);
}
/*
* Get a free stream index for a reservation.
*
@ -92,6 +144,7 @@ static void uwb_rsv_dump(struct uwb_rsv *rsv)
static int uwb_rsv_get_stream(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
struct device *dev = &rc->uwb_dev.dev;
unsigned long *streams_bm;
int stream;
@ -113,12 +166,15 @@ static int uwb_rsv_get_stream(struct uwb_rsv *rsv)
rsv->stream = stream;
set_bit(stream, streams_bm);
dev_dbg(dev, "get stream %d\n", rsv->stream);
return 0;
}
static void uwb_rsv_put_stream(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
struct device *dev = &rc->uwb_dev.dev;
unsigned long *streams_bm;
switch (rsv->target.type) {
@ -133,86 +189,52 @@ static void uwb_rsv_put_stream(struct uwb_rsv *rsv)
}
clear_bit(rsv->stream, streams_bm);
dev_dbg(dev, "put stream %d\n", rsv->stream);
}
/*
* Generate a MAS allocation with a single row component.
*/
static void uwb_rsv_gen_alloc_row(struct uwb_mas_bm *mas,
int first_mas, int mas_per_zone,
int zs, int ze)
void uwb_rsv_backoff_win_timer(unsigned long arg)
{
struct uwb_mas_bm col;
int z;
struct uwb_drp_backoff_win *bow = (struct uwb_drp_backoff_win *)arg;
struct uwb_rc *rc = container_of(bow, struct uwb_rc, bow);
struct device *dev = &rc->uwb_dev.dev;
bitmap_zero(mas->bm, UWB_NUM_MAS);
bitmap_zero(col.bm, UWB_NUM_MAS);
bitmap_fill(col.bm, mas_per_zone);
bitmap_shift_left(col.bm, col.bm, first_mas + zs * UWB_MAS_PER_ZONE, UWB_NUM_MAS);
for (z = zs; z <= ze; z++) {
bitmap_or(mas->bm, mas->bm, col.bm, UWB_NUM_MAS);
bitmap_shift_left(col.bm, col.bm, UWB_MAS_PER_ZONE, UWB_NUM_MAS);
bow->can_reserve_extra_mases = true;
if (bow->total_expired <= 4) {
bow->total_expired++;
} else {
/* after 4 backoff window has expired we can exit from
* the backoff procedure */
bow->total_expired = 0;
bow->window = UWB_DRP_BACKOFF_WIN_MIN >> 1;
}
dev_dbg(dev, "backoff_win_timer total_expired=%d, n=%d\n: ", bow->total_expired, bow->n);
/* try to relocate all the "to be moved" relocations */
uwb_rsv_handle_drp_avail_change(rc);
}
/*
* Allocate some MAS for this reservation based on current local
* availability, the reservation parameters (max_mas, min_mas,
* sparsity), and the WiMedia rules for MAS allocations.
*
* Returns -EBUSY is insufficient free MAS are available.
*
* FIXME: to simplify this, only safe reservations with a single row
* component in zones 1 to 15 are tried (zone 0 is skipped to avoid
* problems with the MAS reserved for the BP).
*
* [ECMA-368] section B.2.
*/
static int uwb_rsv_alloc_mas(struct uwb_rsv *rsv)
void uwb_rsv_backoff_win_increment(struct uwb_rc *rc)
{
static const int safe_mas_in_row[UWB_NUM_ZONES] = {
8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1,
};
int n, r;
struct uwb_mas_bm mas;
bool found = false;
struct uwb_drp_backoff_win *bow = &rc->bow;
struct device *dev = &rc->uwb_dev.dev;
unsigned timeout_us;
/*
* Search all valid safe allocations until either: too few MAS
* are available; or the smallest allocation with sufficient
* MAS is found.
*
* The top of the zones are preferred, so space for larger
* allocations is available in the bottom of the zone (e.g., a
* 15 MAS allocation should start in row 14 leaving space for
* a 120 MAS allocation at row 0).
*/
for (n = safe_mas_in_row[0]; n >= 1; n--) {
int num_mas;
dev_dbg(dev, "backoff_win_increment: window=%d\n", bow->window);
num_mas = n * (UWB_NUM_ZONES - 1);
if (num_mas < rsv->min_mas)
break;
if (found && num_mas < rsv->max_mas)
break;
bow->can_reserve_extra_mases = false;
for (r = UWB_MAS_PER_ZONE-1; r >= 0; r--) {
if (safe_mas_in_row[r] < n)
continue;
uwb_rsv_gen_alloc_row(&mas, r, n, 1, UWB_NUM_ZONES);
if (uwb_drp_avail_reserve_pending(rsv->rc, &mas) == 0) {
found = true;
break;
}
}
}
if((bow->window << 1) == UWB_DRP_BACKOFF_WIN_MAX)
return;
if (!found)
return -EBUSY;
bow->window <<= 1;
bow->n = random32() & (bow->window - 1);
dev_dbg(dev, "new_window=%d, n=%d\n: ", bow->window, bow->n);
bitmap_copy(rsv->mas.bm, mas.bm, UWB_NUM_MAS);
return 0;
/* reset the timer associated variables */
timeout_us = bow->n * UWB_SUPERFRAME_LENGTH_US;
bow->total_expired = 0;
mod_timer(&bow->timer, jiffies + usecs_to_jiffies(timeout_us));
}
static void uwb_rsv_stroke_timer(struct uwb_rsv *rsv)
@ -225,13 +247,16 @@ static void uwb_rsv_stroke_timer(struct uwb_rsv *rsv)
* received.
*/
if (rsv->is_multicast) {
if (rsv->state == UWB_RSV_STATE_O_INITIATED)
if (rsv->state == UWB_RSV_STATE_O_INITIATED
|| rsv->state == UWB_RSV_STATE_O_MOVE_EXPANDING
|| rsv->state == UWB_RSV_STATE_O_MOVE_COMBINING
|| rsv->state == UWB_RSV_STATE_O_MOVE_REDUCING)
sframes = 1;
if (rsv->state == UWB_RSV_STATE_O_ESTABLISHED)
sframes = 0;
}
rsv->expired = false;
if (sframes > 0) {
/*
* Add an additional 2 superframes to account for the
@ -253,7 +278,7 @@ static void uwb_rsv_state_update(struct uwb_rsv *rsv,
rsv->state = new_state;
rsv->ie_valid = false;
uwb_rsv_dump(rsv);
uwb_rsv_dump("SU", rsv);
uwb_rsv_stroke_timer(rsv);
uwb_rsv_sched_update(rsv->rc);
@ -267,10 +292,17 @@ static void uwb_rsv_callback(struct uwb_rsv *rsv)
void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state)
{
struct uwb_rsv_move *mv = &rsv->mv;
if (rsv->state == new_state) {
switch (rsv->state) {
case UWB_RSV_STATE_O_ESTABLISHED:
case UWB_RSV_STATE_O_MOVE_EXPANDING:
case UWB_RSV_STATE_O_MOVE_COMBINING:
case UWB_RSV_STATE_O_MOVE_REDUCING:
case UWB_RSV_STATE_T_ACCEPTED:
case UWB_RSV_STATE_T_EXPANDING_ACCEPTED:
case UWB_RSV_STATE_T_RESIZED:
case UWB_RSV_STATE_NONE:
uwb_rsv_stroke_timer(rsv);
break;
@ -282,10 +314,10 @@ void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state)
return;
}
uwb_rsv_dump("SC", rsv);
switch (new_state) {
case UWB_RSV_STATE_NONE:
uwb_drp_avail_release(rsv->rc, &rsv->mas);
uwb_rsv_put_stream(rsv);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_NONE);
uwb_rsv_callback(rsv);
break;
@ -295,12 +327,45 @@ void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state)
case UWB_RSV_STATE_O_PENDING:
uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_PENDING);
break;
case UWB_RSV_STATE_O_MODIFIED:
/* in the companion there are the MASes to drop */
bitmap_andnot(rsv->mas.bm, rsv->mas.bm, mv->companion_mas.bm, UWB_NUM_MAS);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MODIFIED);
break;
case UWB_RSV_STATE_O_ESTABLISHED:
if (rsv->state == UWB_RSV_STATE_O_MODIFIED
|| rsv->state == UWB_RSV_STATE_O_MOVE_REDUCING) {
uwb_drp_avail_release(rsv->rc, &mv->companion_mas);
rsv->needs_release_companion_mas = false;
}
uwb_drp_avail_reserve(rsv->rc, &rsv->mas);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_ESTABLISHED);
uwb_rsv_callback(rsv);
break;
case UWB_RSV_STATE_O_MOVE_EXPANDING:
rsv->needs_release_companion_mas = true;
uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING);
break;
case UWB_RSV_STATE_O_MOVE_COMBINING:
rsv->needs_release_companion_mas = false;
uwb_drp_avail_reserve(rsv->rc, &mv->companion_mas);
bitmap_or(rsv->mas.bm, rsv->mas.bm, mv->companion_mas.bm, UWB_NUM_MAS);
rsv->mas.safe += mv->companion_mas.safe;
rsv->mas.unsafe += mv->companion_mas.unsafe;
uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_COMBINING);
break;
case UWB_RSV_STATE_O_MOVE_REDUCING:
bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS);
rsv->needs_release_companion_mas = true;
rsv->mas.safe = mv->final_mas.safe;
rsv->mas.unsafe = mv->final_mas.unsafe;
bitmap_copy(rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS);
bitmap_copy(rsv->mas.unsafe_bm, mv->final_mas.unsafe_bm, UWB_NUM_MAS);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_REDUCING);
break;
case UWB_RSV_STATE_T_ACCEPTED:
case UWB_RSV_STATE_T_RESIZED:
rsv->needs_release_companion_mas = false;
uwb_drp_avail_reserve(rsv->rc, &rsv->mas);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_ACCEPTED);
uwb_rsv_callback(rsv);
@ -308,12 +373,82 @@ void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state)
case UWB_RSV_STATE_T_DENIED:
uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_DENIED);
break;
case UWB_RSV_STATE_T_CONFLICT:
uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_CONFLICT);
break;
case UWB_RSV_STATE_T_PENDING:
uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_PENDING);
break;
case UWB_RSV_STATE_T_EXPANDING_ACCEPTED:
rsv->needs_release_companion_mas = true;
uwb_drp_avail_reserve(rsv->rc, &mv->companion_mas);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED);
break;
default:
dev_err(&rsv->rc->uwb_dev.dev, "unhandled state: %s (%d)\n",
uwb_rsv_state_str(new_state), new_state);
}
}
static void uwb_rsv_handle_timeout_work(struct work_struct *work)
{
struct uwb_rsv *rsv = container_of(work, struct uwb_rsv,
handle_timeout_work);
struct uwb_rc *rc = rsv->rc;
mutex_lock(&rc->rsvs_mutex);
uwb_rsv_dump("TO", rsv);
switch (rsv->state) {
case UWB_RSV_STATE_O_INITIATED:
if (rsv->is_multicast) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
goto unlock;
}
break;
case UWB_RSV_STATE_O_MOVE_EXPANDING:
if (rsv->is_multicast) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING);
goto unlock;
}
break;
case UWB_RSV_STATE_O_MOVE_COMBINING:
if (rsv->is_multicast) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING);
goto unlock;
}
break;
case UWB_RSV_STATE_O_MOVE_REDUCING:
if (rsv->is_multicast) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
goto unlock;
}
break;
case UWB_RSV_STATE_O_ESTABLISHED:
if (rsv->is_multicast)
goto unlock;
break;
case UWB_RSV_STATE_T_EXPANDING_ACCEPTED:
/*
* The time out could be for the main or of the
* companion DRP, assume it's for the companion and
* drop that first. A further time out is required to
* drop the main.
*/
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED);
uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas);
goto unlock;
default:
break;
}
uwb_rsv_remove(rsv);
unlock:
mutex_unlock(&rc->rsvs_mutex);
}
static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc)
{
struct uwb_rsv *rsv;
@ -324,23 +459,17 @@ static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc)
INIT_LIST_HEAD(&rsv->rc_node);
INIT_LIST_HEAD(&rsv->pal_node);
kref_init(&rsv->kref);
init_timer(&rsv->timer);
rsv->timer.function = uwb_rsv_timer;
rsv->timer.data = (unsigned long)rsv;
rsv->rc = rc;
INIT_WORK(&rsv->handle_timeout_work, uwb_rsv_handle_timeout_work);
return rsv;
}
static void uwb_rsv_free(struct uwb_rsv *rsv)
{
uwb_dev_put(rsv->owner);
if (rsv->target.type == UWB_RSV_TARGET_DEV)
uwb_dev_put(rsv->target.dev);
kfree(rsv);
}
/**
* uwb_rsv_create - allocate and initialize a UWB reservation structure
* @rc: the radio controller
@ -371,26 +500,36 @@ EXPORT_SYMBOL_GPL(uwb_rsv_create);
void uwb_rsv_remove(struct uwb_rsv *rsv)
{
uwb_rsv_dump("RM", rsv);
if (rsv->state != UWB_RSV_STATE_NONE)
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
if (rsv->needs_release_companion_mas)
uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas);
uwb_drp_avail_release(rsv->rc, &rsv->mas);
if (uwb_rsv_is_owner(rsv))
uwb_rsv_put_stream(rsv);
del_timer_sync(&rsv->timer);
list_del(&rsv->rc_node);
uwb_rsv_free(rsv);
uwb_dev_put(rsv->owner);
if (rsv->target.type == UWB_RSV_TARGET_DEV)
uwb_dev_put(rsv->target.dev);
list_del_init(&rsv->rc_node);
uwb_rsv_put(rsv);
}
/**
* uwb_rsv_destroy - free a UWB reservation structure
* @rsv: the reservation to free
*
* The reservation will be terminated if it is pending or established.
* The reservation must already be terminated.
*/
void uwb_rsv_destroy(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
mutex_lock(&rc->rsvs_mutex);
uwb_rsv_remove(rsv);
mutex_unlock(&rc->rsvs_mutex);
uwb_rsv_put(rsv);
}
EXPORT_SYMBOL_GPL(uwb_rsv_destroy);
@ -399,7 +538,7 @@ EXPORT_SYMBOL_GPL(uwb_rsv_destroy);
* @rsv: the reservation
*
* The PAL should fill in @rsv's owner, target, type, max_mas,
* min_mas, sparsity and is_multicast fields. If the target is a
* min_mas, max_interval and is_multicast fields. If the target is a
* uwb_dev it must be referenced.
*
* The reservation's callback will be called when the reservation is
@ -408,20 +547,32 @@ EXPORT_SYMBOL_GPL(uwb_rsv_destroy);
int uwb_rsv_establish(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
struct uwb_mas_bm available;
int ret;
mutex_lock(&rc->rsvs_mutex);
ret = uwb_rsv_get_stream(rsv);
if (ret)
goto out;
ret = uwb_rsv_alloc_mas(rsv);
if (ret) {
rsv->tiebreaker = random32() & 1;
/* get available mas bitmap */
uwb_drp_available(rc, &available);
ret = uwb_rsv_find_best_allocation(rsv, &available, &rsv->mas);
if (ret == UWB_RSV_ALLOC_NOT_FOUND) {
ret = -EBUSY;
uwb_rsv_put_stream(rsv);
goto out;
}
ret = uwb_drp_avail_reserve_pending(rc, &rsv->mas);
if (ret != 0) {
uwb_rsv_put_stream(rsv);
goto out;
}
uwb_rsv_get(rsv);
list_add_tail(&rsv->rc_node, &rc->reservations);
rsv->owner = &rc->uwb_dev;
uwb_dev_get(rsv->owner);
@ -437,16 +588,71 @@ EXPORT_SYMBOL_GPL(uwb_rsv_establish);
* @rsv: the reservation to modify
* @max_mas: new maximum MAS to reserve
* @min_mas: new minimum MAS to reserve
* @sparsity: new sparsity to use
* @max_interval: new max_interval to use
*
* FIXME: implement this once there are PALs that use it.
*/
int uwb_rsv_modify(struct uwb_rsv *rsv, int max_mas, int min_mas, int sparsity)
int uwb_rsv_modify(struct uwb_rsv *rsv, int max_mas, int min_mas, int max_interval)
{
return -ENOSYS;
}
EXPORT_SYMBOL_GPL(uwb_rsv_modify);
/*
* move an already established reservation (rc->rsvs_mutex must to be
* taken when tis function is called)
*/
int uwb_rsv_try_move(struct uwb_rsv *rsv, struct uwb_mas_bm *available)
{
struct uwb_rc *rc = rsv->rc;
struct uwb_drp_backoff_win *bow = &rc->bow;
struct device *dev = &rc->uwb_dev.dev;
struct uwb_rsv_move *mv;
int ret = 0;
if (bow->can_reserve_extra_mases == false)
return -EBUSY;
mv = &rsv->mv;
if (uwb_rsv_find_best_allocation(rsv, available, &mv->final_mas) == UWB_RSV_ALLOC_FOUND) {
if (!bitmap_equal(rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS)) {
/* We want to move the reservation */
bitmap_andnot(mv->companion_mas.bm, mv->final_mas.bm, rsv->mas.bm, UWB_NUM_MAS);
uwb_drp_avail_reserve_pending(rc, &mv->companion_mas);
uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING);
}
} else {
dev_dbg(dev, "new allocation not found\n");
}
return ret;
}
/* It will try to move every reservation in state O_ESTABLISHED giving
* to the MAS allocator algorithm an availability that is the real one
* plus the allocation already established from the reservation. */
void uwb_rsv_handle_drp_avail_change(struct uwb_rc *rc)
{
struct uwb_drp_backoff_win *bow = &rc->bow;
struct uwb_rsv *rsv;
struct uwb_mas_bm mas;
if (bow->can_reserve_extra_mases == false)
return;
list_for_each_entry(rsv, &rc->reservations, rc_node) {
if (rsv->state == UWB_RSV_STATE_O_ESTABLISHED ||
rsv->state == UWB_RSV_STATE_O_TO_BE_MOVED) {
uwb_drp_available(rc, &mas);
bitmap_or(mas.bm, mas.bm, rsv->mas.bm, UWB_NUM_MAS);
uwb_rsv_try_move(rsv, &mas);
}
}
}
/**
* uwb_rsv_terminate - terminate an established reservation
* @rsv: the reservation to terminate
@ -463,7 +669,8 @@ void uwb_rsv_terminate(struct uwb_rsv *rsv)
mutex_lock(&rc->rsvs_mutex);
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
if (rsv->state != UWB_RSV_STATE_NONE)
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
mutex_unlock(&rc->rsvs_mutex);
}
@ -477,9 +684,14 @@ EXPORT_SYMBOL_GPL(uwb_rsv_terminate);
*
* Reservation requests from peers are denied unless a PAL accepts it
* by calling this function.
*
* The PAL call uwb_rsv_destroy() for all accepted reservations before
* calling uwb_pal_unregister().
*/
void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv)
{
uwb_rsv_get(rsv);
rsv->callback = cb;
rsv->pal_priv = pal_priv;
rsv->state = UWB_RSV_STATE_T_ACCEPTED;
@ -530,9 +742,9 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc,
uwb_dev_get(rsv->owner);
rsv->target.type = UWB_RSV_TARGET_DEV;
rsv->target.dev = &rc->uwb_dev;
uwb_dev_get(&rc->uwb_dev);
rsv->type = uwb_ie_drp_type(drp_ie);
rsv->stream = uwb_ie_drp_stream_index(drp_ie);
set_bit(rsv->stream, rsv->owner->streams);
uwb_drp_ie_to_bm(&rsv->mas, drp_ie);
/*
@ -540,23 +752,45 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc,
* deny the request.
*/
rsv->state = UWB_RSV_STATE_T_DENIED;
spin_lock(&rc->pal_lock);
mutex_lock(&rc->uwb_dev.mutex);
list_for_each_entry(pal, &rc->pals, node) {
if (pal->new_rsv)
pal->new_rsv(rsv);
pal->new_rsv(pal, rsv);
if (rsv->state == UWB_RSV_STATE_T_ACCEPTED)
break;
}
spin_unlock(&rc->pal_lock);
mutex_unlock(&rc->uwb_dev.mutex);
list_add_tail(&rsv->rc_node, &rc->reservations);
state = rsv->state;
rsv->state = UWB_RSV_STATE_NONE;
uwb_rsv_set_state(rsv, state);
/* FIXME: do something sensible here */
if (state == UWB_RSV_STATE_T_ACCEPTED
&& uwb_drp_avail_reserve_pending(rc, &rsv->mas) == -EBUSY) {
/* FIXME: do something sensible here */
} else {
uwb_rsv_set_state(rsv, state);
}
return rsv;
}
/**
* uwb_rsv_get_usable_mas - get the bitmap of the usable MAS of a reservations
* @rsv: the reservation.
* @mas: returns the available MAS.
*
* The usable MAS of a reservation may be less than the negotiated MAS
* if alien BPs are present.
*/
void uwb_rsv_get_usable_mas(struct uwb_rsv *rsv, struct uwb_mas_bm *mas)
{
bitmap_zero(mas->bm, UWB_NUM_MAS);
bitmap_andnot(mas->bm, rsv->mas.bm, rsv->rc->cnflt_alien_bitmap.bm, UWB_NUM_MAS);
}
EXPORT_SYMBOL_GPL(uwb_rsv_get_usable_mas);
/**
* uwb_rsv_find - find a reservation for a received DRP IE.
* @rc: the radio controller
@ -596,8 +830,6 @@ static bool uwb_rsv_update_all(struct uwb_rc *rc)
bool ie_updated = false;
list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
if (rsv->expired)
uwb_drp_handle_timeout(rsv);
if (!rsv->ie_valid) {
uwb_drp_ie_update(rsv);
ie_updated = true;
@ -607,9 +839,47 @@ static bool uwb_rsv_update_all(struct uwb_rc *rc)
return ie_updated;
}
void uwb_rsv_queue_update(struct uwb_rc *rc)
{
unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE;
queue_delayed_work(rc->rsv_workq, &rc->rsv_update_work, usecs_to_jiffies(delay_us));
}
/**
* uwb_rsv_sched_update - schedule an update of the DRP IEs
* @rc: the radio controller.
*
* To improve performance and ensure correctness with [ECMA-368] the
* number of SET-DRP-IE commands that are done are limited.
*
* DRP IEs update come from two sources: DRP events from the hardware
* which all occur at the beginning of the superframe ('syncronous'
* events) and reservation establishment/termination requests from
* PALs or timers ('asynchronous' events).
*
* A delayed work ensures that all the synchronous events result in
* one SET-DRP-IE command.
*
* Additional logic (the set_drp_ie_pending and rsv_updated_postponed
* flags) will prevent an asynchrous event starting a SET-DRP-IE
* command if one is currently awaiting a response.
*
* FIXME: this does leave a window where an asynchrous event can delay
* the SET-DRP-IE for a synchronous event by one superframe.
*/
void uwb_rsv_sched_update(struct uwb_rc *rc)
{
queue_work(rc->rsv_workq, &rc->rsv_update_work);
spin_lock(&rc->rsvs_lock);
if (!delayed_work_pending(&rc->rsv_update_work)) {
if (rc->set_drp_ie_pending > 0) {
rc->set_drp_ie_pending++;
goto unlock;
}
uwb_rsv_queue_update(rc);
}
unlock:
spin_unlock(&rc->rsvs_lock);
}
/*
@ -618,7 +888,8 @@ void uwb_rsv_sched_update(struct uwb_rc *rc)
*/
static void uwb_rsv_update_work(struct work_struct *work)
{
struct uwb_rc *rc = container_of(work, struct uwb_rc, rsv_update_work);
struct uwb_rc *rc = container_of(work, struct uwb_rc,
rsv_update_work.work);
bool ie_updated;
mutex_lock(&rc->rsvs_mutex);
@ -630,25 +901,71 @@ static void uwb_rsv_update_work(struct work_struct *work)
ie_updated = true;
}
if (ie_updated)
if (ie_updated && (rc->set_drp_ie_pending == 0))
uwb_rc_send_all_drp_ie(rc);
mutex_unlock(&rc->rsvs_mutex);
}
static void uwb_rsv_alien_bp_work(struct work_struct *work)
{
struct uwb_rc *rc = container_of(work, struct uwb_rc,
rsv_alien_bp_work.work);
struct uwb_rsv *rsv;
mutex_lock(&rc->rsvs_mutex);
list_for_each_entry(rsv, &rc->reservations, rc_node) {
if (rsv->type != UWB_DRP_TYPE_ALIEN_BP) {
rsv->callback(rsv);
}
}
mutex_unlock(&rc->rsvs_mutex);
}
static void uwb_rsv_timer(unsigned long arg)
{
struct uwb_rsv *rsv = (struct uwb_rsv *)arg;
rsv->expired = true;
uwb_rsv_sched_update(rsv->rc);
queue_work(rsv->rc->rsv_workq, &rsv->handle_timeout_work);
}
/**
* uwb_rsv_remove_all - remove all reservations
* @rc: the radio controller
*
* A DRP IE update is not done.
*/
void uwb_rsv_remove_all(struct uwb_rc *rc)
{
struct uwb_rsv *rsv, *t;
mutex_lock(&rc->rsvs_mutex);
list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
uwb_rsv_remove(rsv);
}
/* Cancel any postponed update. */
rc->set_drp_ie_pending = 0;
mutex_unlock(&rc->rsvs_mutex);
cancel_delayed_work_sync(&rc->rsv_update_work);
}
void uwb_rsv_init(struct uwb_rc *rc)
{
INIT_LIST_HEAD(&rc->reservations);
INIT_LIST_HEAD(&rc->cnflt_alien_list);
mutex_init(&rc->rsvs_mutex);
INIT_WORK(&rc->rsv_update_work, uwb_rsv_update_work);
spin_lock_init(&rc->rsvs_lock);
INIT_DELAYED_WORK(&rc->rsv_update_work, uwb_rsv_update_work);
INIT_DELAYED_WORK(&rc->rsv_alien_bp_work, uwb_rsv_alien_bp_work);
rc->bow.can_reserve_extra_mases = true;
rc->bow.total_expired = 0;
rc->bow.window = UWB_DRP_BACKOFF_WIN_MIN >> 1;
init_timer(&rc->bow.timer);
rc->bow.timer.function = uwb_rsv_backoff_win_timer;
rc->bow.timer.data = (unsigned long)&rc->bow;
bitmap_complement(rc->uwb_dev.streams, rc->uwb_dev.streams, UWB_NUM_STREAMS);
}
@ -667,14 +984,6 @@ int uwb_rsv_setup(struct uwb_rc *rc)
void uwb_rsv_cleanup(struct uwb_rc *rc)
{
struct uwb_rsv *rsv, *t;
mutex_lock(&rc->rsvs_mutex);
list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
uwb_rsv_remove(rsv);
}
mutex_unlock(&rc->rsvs_mutex);
cancel_work_sync(&rc->rsv_update_work);
uwb_rsv_remove_all(rc);
destroy_workqueue(rc->rsv_workq);
}

62
drivers/uwb/umc-bus.c
View File

@ -11,23 +11,48 @@
#include <linux/uwb/umc.h>
#include <linux/pci.h>
static int umc_bus_unbind_helper(struct device *dev, void *data)
static int umc_bus_pre_reset_helper(struct device *dev, void *data)
{
struct device *parent = data;
int ret = 0;
if (dev->parent == parent && dev->driver)
device_release_driver(dev);
return 0;
if (dev->driver) {
struct umc_dev *umc = to_umc_dev(dev);
struct umc_driver *umc_drv = to_umc_driver(dev->driver);
if (umc_drv->pre_reset)
ret = umc_drv->pre_reset(umc);
else
device_release_driver(dev);
}
return ret;
}
static int umc_bus_post_reset_helper(struct device *dev, void *data)
{
int ret = 0;
if (dev->driver) {
struct umc_dev *umc = to_umc_dev(dev);
struct umc_driver *umc_drv = to_umc_driver(dev->driver);
if (umc_drv->post_reset)
ret = umc_drv->post_reset(umc);
} else
ret = device_attach(dev);
return ret;
}
/**
* umc_controller_reset - reset the whole UMC controller
* @umc: the UMC device for the radio controller.
*
* Drivers will be unbound from all UMC devices belonging to the
* controller and then the radio controller will be rebound. The
* radio controller is expected to do a full hardware reset when it is
* probed.
* Drivers or all capabilities of the controller will have their
* pre_reset methods called or be unbound from their device. Then all
* post_reset methods will be called or the drivers will be rebound.
*
* Radio controllers must provide pre_reset and post_reset methods and
* reset the hardware in their start method.
*
* If this is called while a probe() or remove() is in progress it
* will return -EAGAIN and not perform the reset.
@ -35,14 +60,13 @@ static int umc_bus_unbind_helper(struct device *dev, void *data)
int umc_controller_reset(struct umc_dev *umc)
{
struct device *parent = umc->dev.parent;
int ret;
int ret = 0;
if (down_trylock(&parent->sem))
if(down_trylock(&parent->sem))
return -EAGAIN;
bus_for_each_dev(&umc_bus_type, NULL, parent, umc_bus_unbind_helper);
ret = device_attach(&umc->dev);
if (ret == 1)
ret = 0;
ret = device_for_each_child(parent, parent, umc_bus_pre_reset_helper);
if (ret >= 0)
device_for_each_child(parent, parent, umc_bus_post_reset_helper);
up(&parent->sem);
return ret;
@ -75,10 +99,10 @@ static int umc_bus_rescan_helper(struct device *dev, void *data)
if (!dev->driver)
ret = device_attach(dev);
return ret < 0 ? ret : 0;
return ret;
}
static void umc_bus_rescan(void)
static void umc_bus_rescan(struct device *parent)
{
int err;
@ -86,7 +110,7 @@ static void umc_bus_rescan(void)
* We can't use bus_rescan_devices() here as it deadlocks when
* it tries to retake the dev->parent semaphore.
*/
err = bus_for_each_dev(&umc_bus_type, NULL, NULL, umc_bus_rescan_helper);
err = device_for_each_child(parent, NULL, umc_bus_rescan_helper);
if (err < 0)
printk(KERN_WARNING "%s: rescan of bus failed: %d\n",
KBUILD_MODNAME, err);
@ -120,7 +144,7 @@ static int umc_device_probe(struct device *dev)
if (err)
put_device(dev);
else
umc_bus_rescan();
umc_bus_rescan(dev->parent);
return err;
}

11
drivers/uwb/umc-dev.c
View File

@ -7,8 +7,6 @@
*/
#include <linux/kernel.h>
#include <linux/uwb/umc.h>
#define D_LOCAL 0
#include <linux/uwb/debug.h>
static void umc_device_release(struct device *dev)
{
@ -31,8 +29,7 @@ struct umc_dev *umc_device_create(struct device *parent, int n)
umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL);
if (umc) {
snprintf(umc->dev.bus_id, sizeof(umc->dev.bus_id), "%s-%d",
parent->bus_id, n);
dev_set_name(&umc->dev, "%s-%d", dev_name(parent), n);
umc->dev.parent = parent;
umc->dev.bus = &umc_bus_type;
umc->dev.release = umc_device_release;
@ -54,8 +51,6 @@ int umc_device_register(struct umc_dev *umc)
{
int err;
d_fnstart(3, &umc->dev, "(umc_dev %p)\n", umc);
err = request_resource(umc->resource.parent, &umc->resource);
if (err < 0) {
dev_err(&umc->dev, "can't allocate resource range "
@ -69,13 +64,11 @@ int umc_device_register(struct umc_dev *umc)
err = device_register(&umc->dev);
if (err < 0)
goto error_device_register;
d_fnend(3, &umc->dev, "(umc_dev %p) = 0\n", umc);
return 0;
error_device_register:
release_resource(&umc->resource);
error_request_resource:
d_fnend(3, &umc->dev, "(umc_dev %p) = %d\n", umc, err);
return err;
}
EXPORT_SYMBOL_GPL(umc_device_register);
@ -95,10 +88,8 @@ void umc_device_unregister(struct umc_dev *umc)
if (!umc)
return;
dev = get_device(&umc->dev);
d_fnstart(3, dev, "(umc_dev %p)\n", umc);
device_unregister(&umc->dev);
release_resource(&umc->resource);
d_fnend(3, dev, "(umc_dev %p) = void\n", umc);
put_device(dev);
}
EXPORT_SYMBOL_GPL(umc_device_unregister);

149
drivers/uwb/uwb-debug.c
View File

@ -4,6 +4,7 @@
*
* Copyright (C) 2005-2006 Intel Corporation
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
* Copyright (C) 2008 Cambridge Silicon Radio Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
@ -33,31 +34,9 @@
#include <linux/seq_file.h>
#include <linux/uwb/debug-cmd.h>
#define D_LOCAL 0
#include <linux/uwb/debug.h>
#include "uwb-internal.h"
void dump_bytes(struct device *dev, const void *_buf, size_t rsize)
{
const char *buf = _buf;
char line[32];
size_t offset = 0;
int cnt, cnt2;
for (cnt = 0; cnt < rsize; cnt += 8) {
size_t rtop = rsize - cnt < 8 ? rsize - cnt : 8;
for (offset = cnt2 = 0; cnt2 < rtop; cnt2++) {
offset += scnprintf(line + offset, sizeof(line) - offset,
"%02x ", buf[cnt + cnt2] & 0xff);
}
if (dev)
dev_info(dev, "%s\n", line);
else
printk(KERN_INFO "%s\n", line);
}
}
EXPORT_SYMBOL_GPL(dump_bytes);
/*
* Debug interface
*
@ -84,26 +63,23 @@ struct uwb_dbg {
struct dentry *reservations_f;
struct dentry *accept_f;
struct dentry *drp_avail_f;
spinlock_t list_lock;
};
static struct dentry *root_dir;
static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
struct device *dev = &rc->uwb_dev.dev;
struct uwb_dev_addr devaddr;
char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
struct uwb_dbg *dbg = rsv->pal_priv;
uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
if (rsv->target.type == UWB_RSV_TARGET_DEV)
devaddr = rsv->target.dev->dev_addr;
else
devaddr = rsv->target.devaddr;
uwb_dev_addr_print(target, sizeof(target), &devaddr);
uwb_rsv_dump("debug", rsv);
dev_dbg(dev, "debug: rsv %s -> %s: %s\n",
owner, target, uwb_rsv_state_str(rsv->state));
if (rsv->state == UWB_RSV_STATE_NONE) {
spin_lock(&dbg->list_lock);
list_del(&rsv->pal_node);
spin_unlock(&dbg->list_lock);
uwb_rsv_destroy(rsv);
}
}
static int cmd_rsv_establish(struct uwb_rc *rc,
@ -119,26 +95,27 @@ static int cmd_rsv_establish(struct uwb_rc *rc,
if (target == NULL)
return -ENODEV;
rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, NULL);
rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, rc->dbg);
if (rsv == NULL) {
uwb_dev_put(target);
return -ENOMEM;
}
rsv->owner = &rc->uwb_dev;
rsv->target.type = UWB_RSV_TARGET_DEV;
rsv->target.dev = target;
rsv->type = cmd->type;
rsv->max_mas = cmd->max_mas;
rsv->min_mas = cmd->min_mas;
rsv->sparsity = cmd->sparsity;
rsv->target.type = UWB_RSV_TARGET_DEV;
rsv->target.dev = target;
rsv->type = cmd->type;
rsv->max_mas = cmd->max_mas;
rsv->min_mas = cmd->min_mas;
rsv->max_interval = cmd->max_interval;
ret = uwb_rsv_establish(rsv);
if (ret)
uwb_rsv_destroy(rsv);
else
else {
spin_lock(&(rc->dbg)->list_lock);
list_add_tail(&rsv->pal_node, &rc->dbg->rsvs);
spin_unlock(&(rc->dbg)->list_lock);
}
return ret;
}
@ -148,21 +125,40 @@ static int cmd_rsv_terminate(struct uwb_rc *rc,
struct uwb_rsv *rsv, *found = NULL;
int i = 0;
spin_lock(&(rc->dbg)->list_lock);
list_for_each_entry(rsv, &rc->dbg->rsvs, pal_node) {
if (i == cmd->index) {
found = rsv;
uwb_rsv_get(found);
break;
}
i++;
}
spin_unlock(&(rc->dbg)->list_lock);
if (!found)
return -EINVAL;
list_del(&found->pal_node);
uwb_rsv_terminate(found);
uwb_rsv_put(found);
return 0;
}
static int cmd_ie_add(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_add)
{
return uwb_rc_ie_add(rc,
(const struct uwb_ie_hdr *) ie_to_add->data,
ie_to_add->len);
}
static int cmd_ie_rm(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_rm)
{
return uwb_rc_ie_rm(rc, ie_to_rm->data[0]);
}
static int command_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
@ -175,8 +171,8 @@ static ssize_t command_write(struct file *file, const char __user *buf,
{
struct uwb_rc *rc = file->private_data;
struct uwb_dbg_cmd cmd;
int ret;
int ret = 0;
if (len != sizeof(struct uwb_dbg_cmd))
return -EINVAL;
@ -190,6 +186,18 @@ static ssize_t command_write(struct file *file, const char __user *buf,
case UWB_DBG_CMD_RSV_TERMINATE:
ret = cmd_rsv_terminate(rc, &cmd.rsv_terminate);
break;
case UWB_DBG_CMD_IE_ADD:
ret = cmd_ie_add(rc, &cmd.ie_add);
break;
case UWB_DBG_CMD_IE_RM:
ret = cmd_ie_rm(rc, &cmd.ie_rm);
break;
case UWB_DBG_CMD_RADIO_START:
ret = uwb_radio_start(&rc->dbg->pal);
break;
case UWB_DBG_CMD_RADIO_STOP:
uwb_radio_stop(&rc->dbg->pal);
break;
default:
return -EINVAL;
}
@ -283,12 +291,26 @@ static struct file_operations drp_avail_fops = {
.owner = THIS_MODULE,
};
static void uwb_dbg_new_rsv(struct uwb_rsv *rsv)
static void uwb_dbg_channel_changed(struct uwb_pal *pal, int channel)
{
struct uwb_rc *rc = rsv->rc;
struct device *dev = &pal->rc->uwb_dev.dev;
if (rc->dbg->accept)
uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, NULL);
if (channel > 0)
dev_info(dev, "debug: channel %d started\n", channel);
else
dev_info(dev, "debug: channel stopped\n");
}
static void uwb_dbg_new_rsv(struct uwb_pal *pal, struct uwb_rsv *rsv)
{
struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal);
if (dbg->accept) {
spin_lock(&dbg->list_lock);
list_add_tail(&rsv->pal_node, &dbg->rsvs);
spin_unlock(&dbg->list_lock);
uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, dbg);
}
}
/**
@ -302,10 +324,14 @@ void uwb_dbg_add_rc(struct uwb_rc *rc)
return;
INIT_LIST_HEAD(&rc->dbg->rsvs);
spin_lock_init(&(rc->dbg)->list_lock);
uwb_pal_init(&rc->dbg->pal);
rc->dbg->pal.rc = rc;
rc->dbg->pal.channel_changed = uwb_dbg_channel_changed;
rc->dbg->pal.new_rsv = uwb_dbg_new_rsv;
uwb_pal_register(rc, &rc->dbg->pal);
uwb_pal_register(&rc->dbg->pal);
if (root_dir) {
rc->dbg->root_d = debugfs_create_dir(dev_name(&rc->uwb_dev.dev),
root_dir);
@ -325,7 +351,7 @@ void uwb_dbg_add_rc(struct uwb_rc *rc)
}
/**
* uwb_dbg_add_rc - remove a radio controller's debug interface
* uwb_dbg_del_rc - remove a radio controller's debug interface
* @rc: the radio controller
*/
void uwb_dbg_del_rc(struct uwb_rc *rc)
@ -336,10 +362,10 @@ void uwb_dbg_del_rc(struct uwb_rc *rc)
return;
list_for_each_entry_safe(rsv, t, &rc->dbg->rsvs, pal_node) {
uwb_rsv_destroy(rsv);
uwb_rsv_terminate(rsv);
}
uwb_pal_unregister(rc, &rc->dbg->pal);
uwb_pal_unregister(&rc->dbg->pal);
if (root_dir) {
debugfs_remove(rc->dbg->drp_avail_f);
@ -365,3 +391,16 @@ void uwb_dbg_exit(void)
{
debugfs_remove(root_dir);
}
/**
* uwb_dbg_create_pal_dir - create a debugfs directory for a PAL
* @pal: The PAL.
*/
struct dentry *uwb_dbg_create_pal_dir(struct uwb_pal *pal)
{
struct uwb_rc *rc = pal->rc;
if (root_dir && rc->dbg && rc->dbg->root_d && pal->name)
return debugfs_create_dir(pal->name, rc->dbg->root_d);
return NULL;
}

126
drivers/uwb/uwb-internal.h
View File

@ -66,14 +66,14 @@ extern int uwb_rc_scan(struct uwb_rc *rc,
unsigned channel, enum uwb_scan_type type,
unsigned bpst_offset);
extern int uwb_rc_send_all_drp_ie(struct uwb_rc *rc);
extern ssize_t uwb_rc_print_IEs(struct uwb_rc *rc, char *, size_t);
extern void uwb_rc_ie_init(struct uwb_rc *);
extern void uwb_rc_ie_init(struct uwb_rc *);
extern ssize_t uwb_rc_ie_setup(struct uwb_rc *);
extern void uwb_rc_ie_release(struct uwb_rc *);
extern int uwb_rc_ie_add(struct uwb_rc *,
const struct uwb_ie_hdr *, size_t);
extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie);
void uwb_rc_ie_init(struct uwb_rc *);
int uwb_rc_ie_setup(struct uwb_rc *);
void uwb_rc_ie_release(struct uwb_rc *);
int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len,
char *buf, size_t size);
int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *);
extern const char *uwb_rc_strerror(unsigned code);
@ -92,6 +92,12 @@ extern const char *uwb_rc_strerror(unsigned code);
struct uwb_rc_neh;
extern int uwb_rc_cmd_async(struct uwb_rc *rc, const char *cmd_name,
struct uwb_rccb *cmd, size_t cmd_size,
u8 expected_type, u16 expected_event,
uwb_rc_cmd_cb_f cb, void *arg);
void uwb_rc_neh_create(struct uwb_rc *rc);
void uwb_rc_neh_destroy(struct uwb_rc *rc);
@ -106,7 +112,69 @@ void uwb_rc_neh_put(struct uwb_rc_neh *neh);
extern int uwb_est_create(void);
extern void uwb_est_destroy(void);
/*
* UWB conflicting alien reservations
*/
struct uwb_cnflt_alien {
struct uwb_rc *rc;
struct list_head rc_node;
struct uwb_mas_bm mas;
struct timer_list timer;
struct work_struct cnflt_update_work;
};
enum uwb_uwb_rsv_alloc_result {
UWB_RSV_ALLOC_FOUND = 0,
UWB_RSV_ALLOC_NOT_FOUND,
};
enum uwb_rsv_mas_status {
UWB_RSV_MAS_NOT_AVAIL = 1,
UWB_RSV_MAS_SAFE,
UWB_RSV_MAS_UNSAFE,
};
struct uwb_rsv_col_set_info {
unsigned char start_col;
unsigned char interval;
unsigned char safe_mas_per_col;
unsigned char unsafe_mas_per_col;
};
struct uwb_rsv_col_info {
unsigned char max_avail_safe;
unsigned char max_avail_unsafe;
unsigned char highest_mas[UWB_MAS_PER_ZONE];
struct uwb_rsv_col_set_info csi;
};
struct uwb_rsv_row_info {
unsigned char avail[UWB_MAS_PER_ZONE];
unsigned char free_rows;
unsigned char used_rows;
};
/*
* UWB find allocation
*/
struct uwb_rsv_alloc_info {
unsigned char bm[UWB_MAS_PER_ZONE * UWB_NUM_ZONES];
struct uwb_rsv_col_info ci[UWB_NUM_ZONES];
struct uwb_rsv_row_info ri;
struct uwb_mas_bm *not_available;
struct uwb_mas_bm *result;
int min_mas;
int max_mas;
int max_interval;
int total_allocated_mases;
int safe_allocated_mases;
int unsafe_allocated_mases;
int interval;
};
int uwb_rsv_find_best_allocation(struct uwb_rsv *rsv, struct uwb_mas_bm *available,
struct uwb_mas_bm *result);
void uwb_rsv_handle_drp_avail_change(struct uwb_rc *rc);
/*
* UWB Events & management daemon
*/
@ -160,13 +228,14 @@ struct uwb_event {
};
};
extern void uwbd_start(void);
extern void uwbd_stop(void);
extern void uwbd_start(struct uwb_rc *rc);
extern void uwbd_stop(struct uwb_rc *rc);
extern struct uwb_event *uwb_event_alloc(size_t, gfp_t gfp_mask);
extern void uwbd_event_queue(struct uwb_event *);
void uwbd_flush(struct uwb_rc *rc);
/* UWB event handlers */
extern int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *);
extern int uwbd_evt_handle_rc_beacon(struct uwb_event *);
extern int uwbd_evt_handle_rc_beacon_size(struct uwb_event *);
extern int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *);
@ -193,15 +262,6 @@ int uwbd_evt_handle_rc_dev_addr_conflict(struct uwb_event *evt);
extern unsigned long beacon_timeout_ms;
/** Beacon cache list */
struct uwb_beca {
struct list_head list;
size_t entries;
struct mutex mutex;
};
extern struct uwb_beca uwb_beca;
/**
* Beacon cache entry
*
@ -228,9 +288,6 @@ struct uwb_beca_e {
struct uwb_beacon_frame;
extern ssize_t uwb_bce_print_IEs(struct uwb_dev *, struct uwb_beca_e *,
char *, size_t);
extern struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *,
struct uwb_beacon_frame *,
unsigned long);
extern void uwb_bce_kfree(struct kref *_bce);
static inline void uwb_bce_get(struct uwb_beca_e *bce)
@ -241,14 +298,19 @@ static inline void uwb_bce_put(struct uwb_beca_e *bce)
{
kref_put(&bce->refcnt, uwb_bce_kfree);
}
extern void uwb_beca_purge(void);
extern void uwb_beca_release(void);
extern void uwb_beca_purge(struct uwb_rc *rc);
extern void uwb_beca_release(struct uwb_rc *rc);
struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
const struct uwb_dev_addr *devaddr);
struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc,
const struct uwb_mac_addr *macaddr);
int uwb_radio_setup(struct uwb_rc *rc);
void uwb_radio_reset_state(struct uwb_rc *rc);
void uwb_radio_shutdown(struct uwb_rc *rc);
int uwb_radio_force_channel(struct uwb_rc *rc, int channel);
/* -- UWB Sysfs representation */
extern struct class uwb_rc_class;
extern struct device_attribute dev_attr_mac_address;
@ -259,18 +321,29 @@ extern struct device_attribute dev_attr_scan;
void uwb_rsv_init(struct uwb_rc *rc);
int uwb_rsv_setup(struct uwb_rc *rc);
void uwb_rsv_cleanup(struct uwb_rc *rc);
void uwb_rsv_remove_all(struct uwb_rc *rc);
void uwb_rsv_get(struct uwb_rsv *rsv);
void uwb_rsv_put(struct uwb_rsv *rsv);
bool uwb_rsv_has_two_drp_ies(struct uwb_rsv *rsv);
void uwb_rsv_dump(char *text, struct uwb_rsv *rsv);
int uwb_rsv_try_move(struct uwb_rsv *rsv, struct uwb_mas_bm *available);
void uwb_rsv_backoff_win_timer(unsigned long arg);
void uwb_rsv_backoff_win_increment(struct uwb_rc *rc);
int uwb_rsv_status(struct uwb_rsv *rsv);
int uwb_rsv_companion_status(struct uwb_rsv *rsv);
void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state);
void uwb_rsv_remove(struct uwb_rsv *rsv);
struct uwb_rsv *uwb_rsv_find(struct uwb_rc *rc, struct uwb_dev *src,
struct uwb_ie_drp *drp_ie);
void uwb_rsv_sched_update(struct uwb_rc *rc);
void uwb_rsv_queue_update(struct uwb_rc *rc);
void uwb_drp_handle_timeout(struct uwb_rsv *rsv);
int uwb_drp_ie_update(struct uwb_rsv *rsv);
void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie);
void uwb_drp_avail_init(struct uwb_rc *rc);
void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail);
int uwb_drp_avail_reserve_pending(struct uwb_rc *rc, struct uwb_mas_bm *mas);
void uwb_drp_avail_reserve(struct uwb_rc *rc, struct uwb_mas_bm *mas);
void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas);
@ -289,8 +362,7 @@ void uwb_dbg_init(void);
void uwb_dbg_exit(void);
void uwb_dbg_add_rc(struct uwb_rc *rc);
void uwb_dbg_del_rc(struct uwb_rc *rc);
/* Workarounds for version specific stuff */
struct dentry *uwb_dbg_create_pal_dir(struct uwb_pal *pal);
static inline void uwb_dev_lock(struct uwb_dev *uwb_dev)
{

176
drivers/uwb/uwbd.c
View File

@ -68,17 +68,13 @@
*
* Handler functions are called normally uwbd_evt_handle_*().
*/
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/freezer.h>
#include "uwb-internal.h"
#define D_LOCAL 1
#include <linux/uwb/debug.h>
/**
/*
* UWBD Event handler function signature
*
* Return !0 if the event needs not to be freed (ie the handler
@ -101,9 +97,12 @@ struct uwbd_event {
const char *name;
};
/** Table of handlers for and properties of the UWBD Radio Control Events */
static
struct uwbd_event uwbd_events[] = {
/* Table of handlers for and properties of the UWBD Radio Control Events */
static struct uwbd_event uwbd_urc_events[] = {
[UWB_RC_EVT_IE_RCV] = {
.handler = uwbd_evt_handle_rc_ie_rcv,
.name = "IE_RECEIVED"
},
[UWB_RC_EVT_BEACON] = {
.handler = uwbd_evt_handle_rc_beacon,
.name = "BEACON_RECEIVED"
@ -142,23 +141,15 @@ struct uwbd_evt_type_handler {
size_t size;
};
#define UWBD_EVT_TYPE_HANDLER(n,a) { \
.name = (n), \
.uwbd_events = (a), \
.size = sizeof(a)/sizeof((a)[0]) \
}
/** Table of handlers for each UWBD Event type. */
static
struct uwbd_evt_type_handler uwbd_evt_type_handlers[] = {
[UWB_RC_CET_GENERAL] = UWBD_EVT_TYPE_HANDLER("RC", uwbd_events)
/* Table of handlers for each UWBD Event type. */
static struct uwbd_evt_type_handler uwbd_urc_evt_type_handlers[] = {
[UWB_RC_CET_GENERAL] = {
.name = "URC",
.uwbd_events = uwbd_urc_events,
.size = ARRAY_SIZE(uwbd_urc_events),
},
};
static const
size_t uwbd_evt_type_handlers_len =
sizeof(uwbd_evt_type_handlers) / sizeof(uwbd_evt_type_handlers[0]);
static const struct uwbd_event uwbd_message_handlers[] = {
[UWB_EVT_MSG_RESET] = {
.handler = uwbd_msg_handle_reset,
@ -166,9 +157,7 @@ static const struct uwbd_event uwbd_message_handlers[] = {
},
};
static DEFINE_MUTEX(uwbd_event_mutex);
/**
/*
* Handle an URC event passed to the UWB Daemon
*
* @evt: the event to handle
@ -188,6 +177,7 @@ static DEFINE_MUTEX(uwbd_event_mutex);
static
int uwbd_event_handle_urc(struct uwb_event *evt)
{
int result = -EINVAL;
struct uwbd_evt_type_handler *type_table;
uwbd_evt_handler_f handler;
u8 type, context;
@ -197,26 +187,24 @@ int uwbd_event_handle_urc(struct uwb_event *evt)
event = le16_to_cpu(evt->notif.rceb->wEvent);
context = evt->notif.rceb->bEventContext;
if (type > uwbd_evt_type_handlers_len) {
printk(KERN_ERR "UWBD: event type %u: unknown (too high)\n", type);
return -EINVAL;
}
type_table = &uwbd_evt_type_handlers[type];
if (type_table->uwbd_events == NULL) {
printk(KERN_ERR "UWBD: event type %u: unknown\n", type);
return -EINVAL;
}
if (event > type_table->size) {
printk(KERN_ERR "UWBD: event %s[%u]: unknown (too high)\n",
type_table->name, event);
return -EINVAL;
}
if (type > ARRAY_SIZE(uwbd_urc_evt_type_handlers))
goto out;
type_table = &uwbd_urc_evt_type_handlers[type];
if (type_table->uwbd_events == NULL)
goto out;
if (event > type_table->size)
goto out;
handler = type_table->uwbd_events[event].handler;
if (handler == NULL) {
printk(KERN_ERR "UWBD: event %s[%u]: unknown\n", type_table->name, event);
return -EINVAL;
}
return (*handler)(evt);
if (handler == NULL)
goto out;
result = (*handler)(evt);
out:
if (result < 0)
dev_err(&evt->rc->uwb_dev.dev,
"UWBD: event 0x%02x/%04x/%02x, handling failed: %d\n",
type, event, context, result);
return result;
}
static void uwbd_event_handle_message(struct uwb_event *evt)
@ -231,19 +219,10 @@ static void uwbd_event_handle_message(struct uwb_event *evt)
return;
}
/* If this is a reset event we need to drop the
* uwbd_event_mutex or it deadlocks when the reset handler
* attempts to flush the uwbd events. */
if (evt->message == UWB_EVT_MSG_RESET)
mutex_unlock(&uwbd_event_mutex);
result = uwbd_message_handlers[evt->message].handler(evt);
if (result < 0)
dev_err(&rc->uwb_dev.dev, "UWBD: '%s' message failed: %d\n",
uwbd_message_handlers[evt->message].name, result);
if (evt->message == UWB_EVT_MSG_RESET)
mutex_lock(&uwbd_event_mutex);
}
static void uwbd_event_handle(struct uwb_event *evt)
@ -271,20 +250,6 @@ static void uwbd_event_handle(struct uwb_event *evt)
__uwb_rc_put(rc); /* for the __uwb_rc_get() in uwb_rc_notif_cb() */
}
/* The UWB Daemon */
/** Daemon's PID: used to decide if we can queue or not */
static int uwbd_pid;
/** Daemon's task struct for managing the kthread */
static struct task_struct *uwbd_task;
/** Daemon's waitqueue for waiting for new events */
static DECLARE_WAIT_QUEUE_HEAD(uwbd_wq);
/** Daemon's list of events; we queue/dequeue here */
static struct list_head uwbd_event_list = LIST_HEAD_INIT(uwbd_event_list);
/** Daemon's list lock to protect concurent access */
static DEFINE_SPINLOCK(uwbd_event_list_lock);
/**
* UWB Daemon
@ -298,65 +263,58 @@ static DEFINE_SPINLOCK(uwbd_event_list_lock);
* FIXME: should change so we don't have a 1HZ timer all the time, but
* only if there are devices.
*/
static int uwbd(void *unused)
static int uwbd(void *param)
{
struct uwb_rc *rc = param;
unsigned long flags;
struct list_head list = LIST_HEAD_INIT(list);
struct uwb_event *evt, *nxt;
struct uwb_event *evt;
int should_stop = 0;
while (1) {
wait_event_interruptible_timeout(
uwbd_wq,
!list_empty(&uwbd_event_list)
rc->uwbd.wq,
!list_empty(&rc->uwbd.event_list)
|| (should_stop = kthread_should_stop()),
HZ);
if (should_stop)
break;
try_to_freeze();
mutex_lock(&uwbd_event_mutex);
spin_lock_irqsave(&uwbd_event_list_lock, flags);
list_splice_init(&uwbd_event_list, &list);
spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
list_for_each_entry_safe(evt, nxt, &list, list_node) {
spin_lock_irqsave(&rc->uwbd.event_list_lock, flags);
if (!list_empty(&rc->uwbd.event_list)) {
evt = list_first_entry(&rc->uwbd.event_list, struct uwb_event, list_node);
list_del(&evt->list_node);
} else
evt = NULL;
spin_unlock_irqrestore(&rc->uwbd.event_list_lock, flags);
if (evt) {
uwbd_event_handle(evt);
kfree(evt);
}
mutex_unlock(&uwbd_event_mutex);
uwb_beca_purge(); /* Purge devices that left */
uwb_beca_purge(rc); /* Purge devices that left */
}
return 0;
}
/** Start the UWB daemon */
void uwbd_start(void)
void uwbd_start(struct uwb_rc *rc)
{
uwbd_task = kthread_run(uwbd, NULL, "uwbd");
if (uwbd_task == NULL)
rc->uwbd.task = kthread_run(uwbd, rc, "uwbd");
if (rc->uwbd.task == NULL)
printk(KERN_ERR "UWB: Cannot start management daemon; "
"UWB won't work\n");
else
uwbd_pid = uwbd_task->pid;
rc->uwbd.pid = rc->uwbd.task->pid;
}
/* Stop the UWB daemon and free any unprocessed events */
void uwbd_stop(void)
void uwbd_stop(struct uwb_rc *rc)
{
unsigned long flags;
struct uwb_event *evt, *nxt;
kthread_stop(uwbd_task);
spin_lock_irqsave(&uwbd_event_list_lock, flags);
uwbd_pid = 0;
list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) {
if (evt->type == UWB_EVT_TYPE_NOTIF)
kfree(evt->notif.rceb);
kfree(evt);
}
spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
uwb_beca_release();
kthread_stop(rc->uwbd.task);
uwbd_flush(rc);
}
/*
@ -373,18 +331,20 @@ void uwbd_stop(void)
*/
void uwbd_event_queue(struct uwb_event *evt)
{
struct uwb_rc *rc = evt->rc;
unsigned long flags;
spin_lock_irqsave(&uwbd_event_list_lock, flags);
if (uwbd_pid != 0) {
list_add(&evt->list_node, &uwbd_event_list);
wake_up_all(&uwbd_wq);
spin_lock_irqsave(&rc->uwbd.event_list_lock, flags);
if (rc->uwbd.pid != 0) {
list_add(&evt->list_node, &rc->uwbd.event_list);
wake_up_all(&rc->uwbd.wq);
} else {
__uwb_rc_put(evt->rc);
if (evt->type == UWB_EVT_TYPE_NOTIF)
kfree(evt->notif.rceb);
kfree(evt);
}
spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
spin_unlock_irqrestore(&rc->uwbd.event_list_lock, flags);
return;
}
@ -392,10 +352,8 @@ void uwbd_flush(struct uwb_rc *rc)
{
struct uwb_event *evt, *nxt;
mutex_lock(&uwbd_event_mutex);
spin_lock_irq(&uwbd_event_list_lock);
list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) {
spin_lock_irq(&rc->uwbd.event_list_lock);
list_for_each_entry_safe(evt, nxt, &rc->uwbd.event_list, list_node) {
if (evt->rc == rc) {
__uwb_rc_put(rc);
list_del(&evt->list_node);
@ -404,7 +362,5 @@ void uwbd_flush(struct uwb_rc *rc)
kfree(evt);
}
}
spin_unlock_irq(&uwbd_event_list_lock);
mutex_unlock(&uwbd_event_mutex);
spin_unlock_irq(&rc->uwbd.event_list_lock);
}

118
drivers/uwb/whc-rc.c
View File

@ -39,7 +39,6 @@
* them to the hw and transfer the replies/notifications back to the
* UWB stack through the UWB daemon (UWBD).
*/
#include <linux/version.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/pci.h>
@ -49,10 +48,8 @@
#include <linux/uwb.h>
#include <linux/uwb/whci.h>
#include <linux/uwb/umc.h>
#include "uwb-internal.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
#include "uwb-internal.h"
/**
* Descriptor for an instance of the UWB Radio Control Driver that
@ -98,13 +95,8 @@ static int whcrc_cmd(struct uwb_rc *uwb_rc,
struct device *dev = &whcrc->umc_dev->dev;
u32 urccmd;
d_fnstart(3, dev, "(%p, %p, %zu)\n", uwb_rc, cmd, cmd_size);
might_sleep();
if (cmd_size >= 4096) {
result = -E2BIG;
goto error;
}
if (cmd_size >= 4096)
return -EINVAL;
/*
* If the URC is halted, then the hardware has reset itself.
@ -115,16 +107,14 @@ static int whcrc_cmd(struct uwb_rc *uwb_rc,
if (le_readl(whcrc->rc_base + URCSTS) & URCSTS_HALTED) {
dev_err(dev, "requesting reset of halted radio controller\n");
uwb_rc_reset_all(uwb_rc);
result = -EIO;
goto error;
return -EIO;
}
result = wait_event_timeout(whcrc->cmd_wq,
!(le_readl(whcrc->rc_base + URCCMD) & URCCMD_ACTIVE), HZ/2);
if (result == 0) {
dev_err(dev, "device is not ready to execute commands\n");
result = -ETIMEDOUT;
goto error;
return -ETIMEDOUT;
}
memmove(whcrc->cmd_buf, cmd, cmd_size);
@ -137,10 +127,7 @@ static int whcrc_cmd(struct uwb_rc *uwb_rc,
whcrc->rc_base + URCCMD);
spin_unlock(&whcrc->irq_lock);
error:
d_fnend(3, dev, "(%p, %p, %zu) = %d\n",
uwb_rc, cmd, cmd_size, result);
return result;
return 0;
}
static int whcrc_reset(struct uwb_rc *rc)
@ -167,34 +154,25 @@ static int whcrc_reset(struct uwb_rc *rc)
static
void whcrc_enable_events(struct whcrc *whcrc)
{
struct device *dev = &whcrc->umc_dev->dev;
u32 urccmd;
d_fnstart(4, dev, "(whcrc %p)\n", whcrc);
le_writeq(whcrc->evt_dma_buf, whcrc->rc_base + URCEVTADDR);
spin_lock(&whcrc->irq_lock);
urccmd = le_readl(whcrc->rc_base + URCCMD) & ~URCCMD_ACTIVE;
le_writel(urccmd | URCCMD_EARV, whcrc->rc_base + URCCMD);
spin_unlock(&whcrc->irq_lock);
d_fnend(4, dev, "(whcrc %p) = void\n", whcrc);
}
static void whcrc_event_work(struct work_struct *work)
{
struct whcrc *whcrc = container_of(work, struct whcrc, event_work);
struct device *dev = &whcrc->umc_dev->dev;
size_t size;
u64 urcevtaddr;
urcevtaddr = le_readq(whcrc->rc_base + URCEVTADDR);
size = urcevtaddr & URCEVTADDR_OFFSET_MASK;
d_printf(3, dev, "received %zu octet event\n", size);
d_dump(4, dev, whcrc->evt_buf, size > 32 ? 32 : size);
uwb_rc_neh_grok(whcrc->uwb_rc, whcrc->evt_buf, size);
whcrc_enable_events(whcrc);
}
@ -217,22 +195,15 @@ irqreturn_t whcrc_irq_cb(int irq, void *_whcrc)
return IRQ_NONE;
le_writel(urcsts & URCSTS_INT_MASK, whcrc->rc_base + URCSTS);
d_printf(4, dev, "acked 0x%08x, urcsts 0x%08x\n",
le_readl(whcrc->rc_base + URCSTS), urcsts);
if (urcsts & URCSTS_HSE) {
dev_err(dev, "host system error -- hardware halted\n");
/* FIXME: do something sensible here */
goto out;
}
if (urcsts & URCSTS_ER) {
d_printf(3, dev, "ER: event ready\n");
if (urcsts & URCSTS_ER)
schedule_work(&whcrc->event_work);
}
if (urcsts & URCSTS_RCI) {
d_printf(3, dev, "RCI: ready to execute another command\n");
if (urcsts & URCSTS_RCI)
wake_up_all(&whcrc->cmd_wq);
}
out:
return IRQ_HANDLED;
}
@ -251,8 +222,7 @@ int whcrc_setup_rc_umc(struct whcrc *whcrc)
whcrc->area = umc_dev->resource.start;
whcrc->rc_len = umc_dev->resource.end - umc_dev->resource.start + 1;
result = -EBUSY;
if (request_mem_region(whcrc->area, whcrc->rc_len, KBUILD_MODNAME)
== NULL) {
if (request_mem_region(whcrc->area, whcrc->rc_len, KBUILD_MODNAME) == NULL) {
dev_err(dev, "can't request URC region (%zu bytes @ 0x%lx): %d\n",
whcrc->rc_len, whcrc->area, result);
goto error_request_region;
@ -287,8 +257,6 @@ int whcrc_setup_rc_umc(struct whcrc *whcrc)
dev_err(dev, "Can't allocate evt transfer buffer\n");
goto error_evt_buffer;
}
d_printf(3, dev, "UWB RC Interface: %zu bytes at 0x%p, irq %u\n",
whcrc->rc_len, whcrc->rc_base, umc_dev->irq);
return 0;
error_evt_buffer:
@ -333,47 +301,23 @@ void whcrc_release_rc_umc(struct whcrc *whcrc)
static int whcrc_start_rc(struct uwb_rc *rc)
{
struct whcrc *whcrc = rc->priv;
int result = 0;
struct device *dev = &whcrc->umc_dev->dev;
unsigned long start, duration;
/* Reset the thing */
le_writel(URCCMD_RESET, whcrc->rc_base + URCCMD);
if (d_test(3))
start = jiffies;
if (whci_wait_for(dev, whcrc->rc_base + URCCMD, URCCMD_RESET, 0,
5000, "device to reset at init") < 0) {
result = -EBUSY;
goto error;
} else if (d_test(3)) {
duration = jiffies - start;
if (duration > msecs_to_jiffies(40))
dev_err(dev, "Device took %ums to "
"reset. MAX expected: 40ms\n",
jiffies_to_msecs(duration));
}
5000, "hardware reset") < 0)
return -EBUSY;
/* Set the event buffer, start the controller (enable IRQs later) */
le_writel(0, whcrc->rc_base + URCINTR);
le_writel(URCCMD_RS, whcrc->rc_base + URCCMD);
result = -ETIMEDOUT;
if (d_test(3))
start = jiffies;
if (whci_wait_for(dev, whcrc->rc_base + URCSTS, URCSTS_HALTED, 0,
5000, "device to start") < 0)
goto error;
if (d_test(3)) {
duration = jiffies - start;
if (duration > msecs_to_jiffies(40))
dev_err(dev, "Device took %ums to start. "
"MAX expected: 40ms\n",
jiffies_to_msecs(duration));
}
5000, "radio controller start") < 0)
return -ETIMEDOUT;
whcrc_enable_events(whcrc);
result = 0;
le_writel(URCINTR_EN_ALL, whcrc->rc_base + URCINTR);
error:
return result;
return 0;
}
@ -395,7 +339,7 @@ void whcrc_stop_rc(struct uwb_rc *rc)
le_writel(0, whcrc->rc_base + URCCMD);
whci_wait_for(&umc_dev->dev, whcrc->rc_base + URCSTS,
URCSTS_HALTED, 0, 40, "URCSTS.HALTED");
URCSTS_HALTED, URCSTS_HALTED, 100, "radio controller stop");
}
static void whcrc_init(struct whcrc *whcrc)
@ -421,7 +365,6 @@ int whcrc_probe(struct umc_dev *umc_dev)
struct whcrc *whcrc;
struct device *dev = &umc_dev->dev;
d_fnstart(3, dev, "(umc_dev %p)\n", umc_dev);
result = -ENOMEM;
uwb_rc = uwb_rc_alloc();
if (uwb_rc == NULL) {
@ -453,7 +396,6 @@ int whcrc_probe(struct umc_dev *umc_dev)
if (result < 0)
goto error_rc_add;
umc_set_drvdata(umc_dev, whcrc);
d_fnend(3, dev, "(umc_dev %p) = 0\n", umc_dev);
return 0;
error_rc_add:
@ -463,7 +405,6 @@ int whcrc_probe(struct umc_dev *umc_dev)
error_alloc:
uwb_rc_put(uwb_rc);
error_rc_alloc:
d_fnend(3, dev, "(umc_dev %p) = %d\n", umc_dev, result);
return result;
}
@ -486,7 +427,24 @@ static void whcrc_remove(struct umc_dev *umc_dev)
whcrc_release_rc_umc(whcrc);
kfree(whcrc);
uwb_rc_put(uwb_rc);
d_printf(1, &umc_dev->dev, "freed whcrc %p\n", whcrc);
}
static int whcrc_pre_reset(struct umc_dev *umc)
{
struct whcrc *whcrc = umc_get_drvdata(umc);
struct uwb_rc *uwb_rc = whcrc->uwb_rc;
uwb_rc_pre_reset(uwb_rc);
return 0;
}
static int whcrc_post_reset(struct umc_dev *umc)
{
struct whcrc *whcrc = umc_get_drvdata(umc);
struct uwb_rc *uwb_rc = whcrc->uwb_rc;
uwb_rc_post_reset(uwb_rc);
return 0;
}
/* PCI device ID's that we handle [so it gets loaded] */
@ -497,10 +455,12 @@ static struct pci_device_id whcrc_id_table[] = {
MODULE_DEVICE_TABLE(pci, whcrc_id_table);
static struct umc_driver whcrc_driver = {
.name = "whc-rc",
.cap_id = UMC_CAP_ID_WHCI_RC,
.probe = whcrc_probe,
.remove = whcrc_remove,
.name = "whc-rc",
.cap_id = UMC_CAP_ID_WHCI_RC,
.probe = whcrc_probe,
.remove = whcrc_remove,
.pre_reset = whcrc_pre_reset,
.post_reset = whcrc_post_reset,
};
static int __init whcrc_driver_init(void)

6
drivers/uwb/whci.c
View File

@ -67,11 +67,11 @@ int whci_wait_for(struct device *dev, u32 __iomem *reg, u32 mask, u32 result,
val = le_readl(reg);
if ((val & mask) == result)
break;
msleep(10);
if (t >= max_ms) {
dev_err(dev, "timed out waiting for %s ", tag);
dev_err(dev, "%s timed out\n", tag);
return -ETIMEDOUT;
}
msleep(10);
t += 10;
}
return 0;
@ -111,7 +111,7 @@ static int whci_add_cap(struct whci_card *card, int n)
+ UWBCAPDATA_TO_OFFSET(capdata);
umc->resource.end = umc->resource.start
+ (n == 0 ? 0x20 : UWBCAPDATA_TO_SIZE(capdata)) - 1;
umc->resource.name = umc->dev.bus_id;
umc->resource.name = dev_name(&umc->dev);
umc->resource.flags = card->pci->resource[bar].flags;
umc->resource.parent = &card->pci->resource[bar];
umc->irq = card->pci->irq;

19
drivers/uwb/wlp/eda.c
View File

@ -51,9 +51,7 @@
* the tag and address of the transmitting neighbor.
*/
#define D_LOCAL 5
#include <linux/netdevice.h>
#include <linux/uwb/debug.h>
#include <linux/etherdevice.h>
#include <linux/wlp.h>
#include "wlp-internal.h"
@ -304,7 +302,6 @@ int wlp_eda_for_virtual(struct wlp_eda *eda,
{
int result = 0;
struct wlp *wlp = container_of(eda, struct wlp, eda);
struct device *dev = &wlp->rc->uwb_dev.dev;
struct wlp_eda_node *itr;
unsigned long flags;
int found = 0;
@ -313,26 +310,14 @@ int wlp_eda_for_virtual(struct wlp_eda *eda,
list_for_each_entry(itr, &eda->cache, list_node) {
if (!memcmp(itr->virt_addr, virt_addr,
sizeof(itr->virt_addr))) {
d_printf(6, dev, "EDA: looking for %pM hit %02x:%02x "
"wss %p tag 0x%02x state %u\n",
virt_addr,
itr->dev_addr.data[1],
itr->dev_addr.data[0], itr->wss,
itr->tag, itr->state);
result = (*function)(wlp, itr, priv);
*dev_addr = itr->dev_addr;
found = 1;
break;
} else
d_printf(6, dev, "EDA: looking for %pM against %pM miss\n",
virt_addr, itr->virt_addr);
}
}
if (!found) {
if (printk_ratelimit())
dev_err(dev, "EDA: Eth addr %pM not found.\n",
virt_addr);
if (!found)
result = -ENODEV;
}
spin_unlock_irqrestore(&eda->lock, flags);
return result;
}

181
drivers/uwb/wlp/messages.c
View File

@ -24,8 +24,7 @@
*/
#include <linux/wlp.h>
#define D_LOCAL 6
#include <linux/uwb/debug.h>
#include "wlp-internal.h"
static
@ -105,24 +104,18 @@ static inline void wlp_set_attr_hdr(struct wlp_attr_hdr *hdr, unsigned type,
#define wlp_set(type, type_code, name) \
static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
{ \
d_fnstart(6, NULL, "(attribute %p)\n", attr); \
wlp_set_attr_hdr(&attr->hdr, type_code, \
sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \
attr->name = value; \
d_dump(6, NULL, attr, sizeof(*attr)); \
d_fnend(6, NULL, "(attribute %p)\n", attr); \
return sizeof(*attr); \
}
#define wlp_pset(type, type_code, name) \
static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
{ \
d_fnstart(6, NULL, "(attribute %p)\n", attr); \
wlp_set_attr_hdr(&attr->hdr, type_code, \
sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \
attr->name = *value; \
d_dump(6, NULL, attr, sizeof(*attr)); \
d_fnend(6, NULL, "(attribute %p)\n", attr); \
return sizeof(*attr); \
}
@ -139,11 +132,8 @@ static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value, \
size_t len) \
{ \
d_fnstart(6, NULL, "(attribute %p)\n", attr); \
wlp_set_attr_hdr(&attr->hdr, type_code, len); \
memcpy(attr->name, value, len); \
d_dump(6, NULL, attr, sizeof(*attr) + len); \
d_fnend(6, NULL, "(attribute %p)\n", attr); \
return sizeof(*attr) + len; \
}
@ -182,7 +172,7 @@ static size_t wlp_set_wss_info(struct wlp_attr_wss_info *attr,
size_t datalen;
void *ptr = attr->wss_info;
size_t used = sizeof(*attr);
d_fnstart(6, NULL, "(attribute %p)\n", attr);
datalen = sizeof(struct wlp_wss_info) + strlen(wss->name);
wlp_set_attr_hdr(&attr->hdr, WLP_ATTR_WSS_INFO, datalen);
used = wlp_set_wssid(ptr, &wss->wssid);
@ -190,9 +180,6 @@ static size_t wlp_set_wss_info(struct wlp_attr_wss_info *attr,
used += wlp_set_accept_enrl(ptr + used, wss->accept_enroll);
used += wlp_set_wss_sec_status(ptr + used, wss->secure_status);
used += wlp_set_wss_bcast(ptr + used, &wss->bcast);
d_dump(6, NULL, attr, sizeof(*attr) + datalen);
d_fnend(6, NULL, "(attribute %p, used %d)\n",
attr, (int)(sizeof(*attr) + used));
return sizeof(*attr) + used;
}
@ -414,7 +401,6 @@ static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp,
size_t used = 0;
ssize_t result = -EINVAL;
d_printf(6, dev, "WLP: WSS info: Retrieving WSS name\n");
result = wlp_get_wss_name(wlp, ptr, info->name, buflen);
if (result < 0) {
dev_err(dev, "WLP: unable to obtain WSS name from "
@ -422,7 +408,7 @@ static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp,
goto error_parse;
}
used += result;
d_printf(6, dev, "WLP: WSS info: Retrieving accept enroll\n");
result = wlp_get_accept_enrl(wlp, ptr + used, &info->accept_enroll,
buflen - used);
if (result < 0) {
@ -437,7 +423,7 @@ static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp,
goto error_parse;
}
used += result;
d_printf(6, dev, "WLP: WSS info: Retrieving secure status\n");
result = wlp_get_wss_sec_status(wlp, ptr + used, &info->sec_status,
buflen - used);
if (result < 0) {
@ -452,7 +438,7 @@ static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp,
goto error_parse;
}
used += result;
d_printf(6, dev, "WLP: WSS info: Retrieving broadcast\n");
result = wlp_get_wss_bcast(wlp, ptr + used, &info->bcast,
buflen - used);
if (result < 0) {
@ -530,7 +516,7 @@ static ssize_t wlp_get_wss_info(struct wlp *wlp, struct wlp_attr_wss_info *attr,
len = result;
used = sizeof(*attr);
ptr = attr;
d_printf(6, dev, "WLP: WSS info: Retrieving WSSID\n");
result = wlp_get_wssid(wlp, ptr + used, wssid, buflen - used);
if (result < 0) {
dev_err(dev, "WLP: unable to obtain WSSID from WSS info.\n");
@ -553,8 +539,6 @@ static ssize_t wlp_get_wss_info(struct wlp *wlp, struct wlp_attr_wss_info *attr,
goto out;
}
result = used;
d_printf(6, dev, "WLP: Successfully parsed WLP information "
"attribute. used %zu bytes\n", used);
out:
return result;
}
@ -598,8 +582,6 @@ static ssize_t wlp_get_all_wss_info(struct wlp *wlp,
struct wlp_wssid_e *wssid_e;
char buf[WLP_WSS_UUID_STRSIZE];
d_fnstart(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d \n",
wlp, attr, neighbor, wss, (int)buflen);
if (buflen < 0)
goto out;
@ -638,8 +620,7 @@ static ssize_t wlp_get_all_wss_info(struct wlp *wlp,
wss->accept_enroll = wss_info.accept_enroll;
wss->state = WLP_WSS_STATE_PART_ENROLLED;
wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
d_printf(2, dev, "WLP: Found WSS %s. Enrolling.\n",
buf);
dev_dbg(dev, "WLP: Found WSS %s. Enrolling.\n", buf);
} else {
wssid_e = wlp_create_wssid_e(wlp, neighbor);
if (wssid_e == NULL) {
@ -660,9 +641,6 @@ static ssize_t wlp_get_all_wss_info(struct wlp *wlp,
if (result < 0 && !enroll) /* this was a discovery */
wlp_remove_neighbor_tmp_info(neighbor);
out:
d_fnend(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d, "
"result %d \n", wlp, attr, neighbor, wss, (int)buflen,
(int)result);
return result;
}
@ -718,7 +696,6 @@ static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss,
struct sk_buff *_skb;
void *d1_itr;
d_fnstart(6, dev, "wlp %p\n", wlp);
if (wlp->dev_info == NULL) {
result = __wlp_setup_device_info(wlp);
if (result < 0) {
@ -728,24 +705,6 @@ static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss,
}
}
info = wlp->dev_info;
d_printf(6, dev, "Local properties:\n"
"Device name (%d bytes): %s\n"
"Model name (%d bytes): %s\n"
"Manufacturer (%d bytes): %s\n"
"Model number (%d bytes): %s\n"
"Serial number (%d bytes): %s\n"
"Primary device type: \n"
" Category: %d \n"
" OUI: %02x:%02x:%02x \n"
" OUI Subdivision: %u \n",
(int)strlen(info->name), info->name,
(int)strlen(info->model_name), info->model_name,
(int)strlen(info->manufacturer), info->manufacturer,
(int)strlen(info->model_nr), info->model_nr,
(int)strlen(info->serial), info->serial,
info->prim_dev_type.category,
info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1],
info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv);
_skb = dev_alloc_skb(sizeof(*_d1)
+ sizeof(struct wlp_attr_uuid_e)
+ sizeof(struct wlp_attr_wss_sel_mthd)
@ -768,7 +727,6 @@ static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss,
goto error;
}
_d1 = (void *) _skb->data;
d_printf(6, dev, "D1 starts at %p \n", _d1);
_d1->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
_d1->hdr.type = WLP_FRAME_ASSOCIATION;
_d1->type = WLP_ASSOC_D1;
@ -791,25 +749,8 @@ static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss,
used += wlp_set_prim_dev_type(d1_itr + used, &info->prim_dev_type);
used += wlp_set_wlp_assc_err(d1_itr + used, WLP_ASSOC_ERROR_NONE);
skb_put(_skb, sizeof(*_d1) + used);
d_printf(6, dev, "D1 message:\n");
d_dump(6, dev, _d1, sizeof(*_d1)
+ sizeof(struct wlp_attr_uuid_e)
+ sizeof(struct wlp_attr_wss_sel_mthd)
+ sizeof(struct wlp_attr_dev_name)
+ strlen(info->name)
+ sizeof(struct wlp_attr_manufacturer)
+ strlen(info->manufacturer)
+ sizeof(struct wlp_attr_model_name)
+ strlen(info->model_name)
+ sizeof(struct wlp_attr_model_nr)
+ strlen(info->model_nr)
+ sizeof(struct wlp_attr_serial)
+ strlen(info->serial)
+ sizeof(struct wlp_attr_prim_dev_type)
+ sizeof(struct wlp_attr_wlp_assc_err));
*skb = _skb;
error:
d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
return result;
}
@ -837,7 +778,6 @@ int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss,
void *d2_itr;
size_t mem_needed;
d_fnstart(6, dev, "wlp %p\n", wlp);
if (wlp->dev_info == NULL) {
result = __wlp_setup_device_info(wlp);
if (result < 0) {
@ -847,24 +787,6 @@ int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss,
}
}
info = wlp->dev_info;
d_printf(6, dev, "Local properties:\n"
"Device name (%d bytes): %s\n"
"Model name (%d bytes): %s\n"
"Manufacturer (%d bytes): %s\n"
"Model number (%d bytes): %s\n"
"Serial number (%d bytes): %s\n"
"Primary device type: \n"
" Category: %d \n"
" OUI: %02x:%02x:%02x \n"
" OUI Subdivision: %u \n",
(int)strlen(info->name), info->name,
(int)strlen(info->model_name), info->model_name,
(int)strlen(info->manufacturer), info->manufacturer,
(int)strlen(info->model_nr), info->model_nr,
(int)strlen(info->serial), info->serial,
info->prim_dev_type.category,
info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1],
info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv);
mem_needed = sizeof(*_d2)
+ sizeof(struct wlp_attr_uuid_e)
+ sizeof(struct wlp_attr_uuid_r)
@ -892,7 +814,6 @@ int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss,
goto error;
}
_d2 = (void *) _skb->data;
d_printf(6, dev, "D2 starts at %p \n", _d2);
_d2->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
_d2->hdr.type = WLP_FRAME_ASSOCIATION;
_d2->type = WLP_ASSOC_D2;
@ -917,11 +838,8 @@ int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss,
used += wlp_set_prim_dev_type(d2_itr + used, &info->prim_dev_type);
used += wlp_set_wlp_assc_err(d2_itr + used, WLP_ASSOC_ERROR_NONE);
skb_put(_skb, sizeof(*_d2) + used);
d_printf(6, dev, "D2 message:\n");
d_dump(6, dev, _d2, mem_needed);
*skb = _skb;
error:
d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
return result;
}
@ -947,7 +865,6 @@ int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb,
struct sk_buff *_skb;
struct wlp_nonce tmp;
d_fnstart(6, dev, "wlp %p\n", wlp);
_skb = dev_alloc_skb(sizeof(*f0));
if (_skb == NULL) {
dev_err(dev, "WLP: Unable to allocate memory for F0 "
@ -955,7 +872,6 @@ int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb,
goto error_alloc;
}
f0 = (void *) _skb->data;
d_printf(6, dev, "F0 starts at %p \n", f0);
f0->f0_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
f0->f0_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
f0->f0_hdr.type = WLP_ASSOC_F0;
@ -969,7 +885,6 @@ int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb,
*skb = _skb;
result = 0;
error_alloc:
d_fnend(6, dev, "wlp %p, result %d \n", wlp, result);
return result;
}
@ -1242,12 +1157,9 @@ void wlp_handle_d1_frame(struct work_struct *ws)
enum wlp_wss_sel_mthd sel_mthd = 0;
struct wlp_device_info dev_info;
enum wlp_assc_error assc_err;
char uuid[WLP_WSS_UUID_STRSIZE];
struct sk_buff *resp = NULL;
/* Parse D1 frame */
d_fnstart(6, dev, "WLP: handle D1 frame. wlp = %p, skb = %p\n",
wlp, skb);
mutex_lock(&wss->mutex);
mutex_lock(&wlp->mutex); /* to access wlp->uuid */
memset(&dev_info, 0, sizeof(dev_info));
@ -1258,30 +1170,6 @@ void wlp_handle_d1_frame(struct work_struct *ws)
kfree_skb(skb);
goto out;
}
wlp_wss_uuid_print(uuid, sizeof(uuid), &uuid_e);
d_printf(6, dev, "From D1 frame:\n"
"UUID-E: %s\n"
"Selection method: %d\n"
"Device name (%d bytes): %s\n"
"Model name (%d bytes): %s\n"
"Manufacturer (%d bytes): %s\n"
"Model number (%d bytes): %s\n"
"Serial number (%d bytes): %s\n"
"Primary device type: \n"
" Category: %d \n"
" OUI: %02x:%02x:%02x \n"
" OUI Subdivision: %u \n",
uuid, sel_mthd,
(int)strlen(dev_info.name), dev_info.name,
(int)strlen(dev_info.model_name), dev_info.model_name,
(int)strlen(dev_info.manufacturer), dev_info.manufacturer,
(int)strlen(dev_info.model_nr), dev_info.model_nr,
(int)strlen(dev_info.serial), dev_info.serial,
dev_info.prim_dev_type.category,
dev_info.prim_dev_type.OUI[0],
dev_info.prim_dev_type.OUI[1],
dev_info.prim_dev_type.OUI[2],
dev_info.prim_dev_type.OUIsubdiv);
kfree_skb(skb);
if (!wlp_uuid_is_set(&wlp->uuid)) {
@ -1316,7 +1204,6 @@ void wlp_handle_d1_frame(struct work_struct *ws)
kfree(frame_ctx);
mutex_unlock(&wlp->mutex);
mutex_unlock(&wss->mutex);
d_fnend(6, dev, "WLP: handle D1 frame. wlp = %p\n", wlp);
}
/**
@ -1546,10 +1433,8 @@ int wlp_parse_c3c4_frame(struct wlp *wlp, struct sk_buff *skb,
void *ptr = skb->data;
size_t len = skb->len;
size_t used;
char buf[WLP_WSS_UUID_STRSIZE];
struct wlp_frame_assoc *assoc = ptr;
d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb);
used = sizeof(*assoc);
result = wlp_get_wssid(wlp, ptr + used, wssid, len - used);
if (result < 0) {
@ -1572,14 +1457,7 @@ int wlp_parse_c3c4_frame(struct wlp *wlp, struct sk_buff *skb,
wlp_assoc_frame_str(assoc->type));
goto error_parse;
}
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
d_printf(6, dev, "WLP: parsed: WSSID %s, tag 0x%02x, virt "
"%02x:%02x:%02x:%02x:%02x:%02x \n", buf, *tag,
virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]);
error_parse:
d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result);
return result;
}
@ -1600,7 +1478,6 @@ int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss,
} *c;
struct sk_buff *_skb;
d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss);
_skb = dev_alloc_skb(sizeof(*c));
if (_skb == NULL) {
dev_err(dev, "WLP: Unable to allocate memory for C1/C2 "
@ -1608,7 +1485,6 @@ int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss,
goto error_alloc;
}
c = (void *) _skb->data;
d_printf(6, dev, "C1/C2 starts at %p \n", c);
c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
c->c_hdr.type = type;
@ -1616,12 +1492,9 @@ int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss,
wlp_set_msg_type(&c->c_hdr.msg_type, type);
wlp_set_wssid(&c->wssid, &wss->wssid);
skb_put(_skb, sizeof(*c));
d_printf(6, dev, "C1/C2 message:\n");
d_dump(6, dev, c, sizeof(*c));
*skb = _skb;
result = 0;
error_alloc:
d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result);
return result;
}
@ -1660,7 +1533,6 @@ int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss,
} *c;
struct sk_buff *_skb;
d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss);
_skb = dev_alloc_skb(sizeof(*c));
if (_skb == NULL) {
dev_err(dev, "WLP: Unable to allocate memory for C3/C4 "
@ -1668,7 +1540,6 @@ int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss,
goto error_alloc;
}
c = (void *) _skb->data;
d_printf(6, dev, "C3/C4 starts at %p \n", c);
c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
c->c_hdr.type = type;
@ -1678,12 +1549,9 @@ int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss,
wlp_set_wss_tag(&c->wss_tag, wss->tag);
wlp_set_wss_virt(&c->wss_virt, &wss->virtual_addr);
skb_put(_skb, sizeof(*c));
d_printf(6, dev, "C3/C4 message:\n");
d_dump(6, dev, c, sizeof(*c));
*skb = _skb;
result = 0;
error_alloc:
d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result);
return result;
}
@ -1709,10 +1577,7 @@ static int wlp_send_assoc_##type(struct wlp *wlp, struct wlp_wss *wss, \
struct device *dev = &wlp->rc->uwb_dev.dev; \
int result; \
struct sk_buff *skb = NULL; \
d_fnstart(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n", \
wlp, wss, dev_addr->data[1], dev_addr->data[0]); \
d_printf(6, dev, "WLP: Constructing %s frame. \n", \
wlp_assoc_frame_str(id)); \
\
/* Build the frame */ \
result = wlp_build_assoc_##type(wlp, wss, &skb); \
if (result < 0) { \
@ -1721,9 +1586,6 @@ static int wlp_send_assoc_##type(struct wlp *wlp, struct wlp_wss *wss, \
goto error_build_assoc; \
} \
/* Send the frame */ \
d_printf(6, dev, "Transmitting %s frame to %02x:%02x \n", \
wlp_assoc_frame_str(id), \
dev_addr->data[1], dev_addr->data[0]); \
BUG_ON(wlp->xmit_frame == NULL); \
result = wlp->xmit_frame(wlp, skb, dev_addr); \
if (result < 0) { \
@ -1740,8 +1602,6 @@ error_xmit: \
/* We could try again ... */ \
dev_kfree_skb_any(skb);/*we need to free if tx fails*/ \
error_build_assoc: \
d_fnend(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n", \
wlp, wss, dev_addr->data[1], dev_addr->data[0]); \
return result; \
}
@ -1794,12 +1654,9 @@ void wlp_handle_c1_frame(struct work_struct *ws)
struct uwb_dev_addr *src = &frame_ctx->src;
int result;
struct wlp_uuid wssid;
char buf[WLP_WSS_UUID_STRSIZE];
struct sk_buff *resp = NULL;
/* Parse C1 frame */
d_fnstart(6, dev, "WLP: handle C1 frame. wlp = %p, c1 = %p\n",
wlp, c1);
mutex_lock(&wss->mutex);
result = wlp_get_wssid(wlp, (void *)c1 + sizeof(*c1), &wssid,
len - sizeof(*c1));
@ -1807,12 +1664,8 @@ void wlp_handle_c1_frame(struct work_struct *ws)
dev_err(dev, "WLP: unable to obtain WSSID from C1 frame.\n");
goto out;
}
wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
d_printf(6, dev, "Received C1 frame with WSSID %s \n", buf);
if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
&& wss->state == WLP_WSS_STATE_ACTIVE) {
d_printf(6, dev, "WSSID from C1 frame is known locally "
"and is active\n");
/* Construct C2 frame */
result = wlp_build_assoc_c2(wlp, wss, &resp);
if (result < 0) {
@ -1820,8 +1673,6 @@ void wlp_handle_c1_frame(struct work_struct *ws)
goto out;
}
} else {
d_printf(6, dev, "WSSID from C1 frame is not known locally "
"or is not active\n");
/* Construct F0 frame */
result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
if (result < 0) {
@ -1830,8 +1681,6 @@ void wlp_handle_c1_frame(struct work_struct *ws)
}
}
/* Send C2 frame */
d_printf(6, dev, "Transmitting response (C2/F0) frame to %02x:%02x \n",
src->data[1], src->data[0]);
BUG_ON(wlp->xmit_frame == NULL);
result = wlp->xmit_frame(wlp, resp, src);
if (result < 0) {
@ -1846,7 +1695,6 @@ void wlp_handle_c1_frame(struct work_struct *ws)
kfree_skb(frame_ctx->skb);
kfree(frame_ctx);
mutex_unlock(&wss->mutex);
d_fnend(6, dev, "WLP: handle C1 frame. wlp = %p\n", wlp);
}
/**
@ -1868,27 +1716,20 @@ void wlp_handle_c3_frame(struct work_struct *ws)
struct sk_buff *skb = frame_ctx->skb;
struct uwb_dev_addr *src = &frame_ctx->src;
int result;
char buf[WLP_WSS_UUID_STRSIZE];
struct sk_buff *resp = NULL;
struct wlp_uuid wssid;
u8 tag;
struct uwb_mac_addr virt_addr;
/* Parse C3 frame */
d_fnstart(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n",
wlp, skb);
mutex_lock(&wss->mutex);
result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr);
if (result < 0) {
dev_err(dev, "WLP: unable to obtain values from C3 frame.\n");
goto out;
}
wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
d_printf(6, dev, "Received C3 frame with WSSID %s \n", buf);
if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
&& wss->state >= WLP_WSS_STATE_ACTIVE) {
d_printf(6, dev, "WSSID from C3 frame is known locally "
"and is active\n");
result = wlp_eda_update_node(&wlp->eda, src, wss,
(void *) virt_addr.data, tag,
WLP_WSS_CONNECTED);
@ -1913,8 +1754,6 @@ void wlp_handle_c3_frame(struct work_struct *ws)
}
}
} else {
d_printf(6, dev, "WSSID from C3 frame is not known locally "
"or is not active\n");
/* Construct F0 frame */
result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
if (result < 0) {
@ -1923,8 +1762,6 @@ void wlp_handle_c3_frame(struct work_struct *ws)
}
}
/* Send C4 frame */
d_printf(6, dev, "Transmitting response (C4/F0) frame to %02x:%02x \n",
src->data[1], src->data[0]);
BUG_ON(wlp->xmit_frame == NULL);
result = wlp->xmit_frame(wlp, resp, src);
if (result < 0) {
@ -1939,8 +1776,6 @@ void wlp_handle_c3_frame(struct work_struct *ws)
kfree_skb(frame_ctx->skb);
kfree(frame_ctx);
mutex_unlock(&wss->mutex);
d_fnend(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n",
wlp, skb);
}

2
drivers/uwb/wlp/sysfs.c
View File

@ -23,8 +23,8 @@
* FIXME: Docs
*
*/
#include <linux/wlp.h>
#include "wlp-internal.h"
static

37
drivers/uwb/wlp/txrx.c
View File

@ -26,12 +26,10 @@
#include <linux/etherdevice.h>
#include <linux/wlp.h>
#define D_LOCAL 5
#include <linux/uwb/debug.h>
#include "wlp-internal.h"
/**
/*
* Direct incoming association msg to correct parsing routine
*
* We only expect D1, E1, C1, C3 messages as new. All other incoming
@ -48,35 +46,31 @@ void wlp_direct_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
struct device *dev = &wlp->rc->uwb_dev.dev;
struct wlp_frame_assoc *assoc = (void *) skb->data;
struct wlp_assoc_frame_ctx *frame_ctx;
d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb);
frame_ctx = kmalloc(sizeof(*frame_ctx), GFP_ATOMIC);
if (frame_ctx == NULL) {
dev_err(dev, "WLP: Unable to allocate memory for association "
"frame handling.\n");
kfree_skb(skb);
goto out;
return;
}
frame_ctx->wlp = wlp;
frame_ctx->skb = skb;
frame_ctx->src = *src;
switch (assoc->type) {
case WLP_ASSOC_D1:
d_printf(5, dev, "Received a D1 frame.\n");
INIT_WORK(&frame_ctx->ws, wlp_handle_d1_frame);
schedule_work(&frame_ctx->ws);
break;
case WLP_ASSOC_E1:
d_printf(5, dev, "Received a E1 frame. FIXME?\n");
kfree_skb(skb); /* Temporary until we handle it */
kfree(frame_ctx); /* Temporary until we handle it */
break;
case WLP_ASSOC_C1:
d_printf(5, dev, "Received a C1 frame.\n");
INIT_WORK(&frame_ctx->ws, wlp_handle_c1_frame);
schedule_work(&frame_ctx->ws);
break;
case WLP_ASSOC_C3:
d_printf(5, dev, "Received a C3 frame.\n");
INIT_WORK(&frame_ctx->ws, wlp_handle_c3_frame);
schedule_work(&frame_ctx->ws);
break;
@ -87,11 +81,9 @@ void wlp_direct_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
kfree(frame_ctx);
break;
}
out:
d_fnend(5, dev, "wlp %p\n", wlp);
}
/**
/*
* Process incoming association frame
*
* Although it could be possible to deal with some incoming association
@ -112,7 +104,6 @@ void wlp_receive_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
struct wlp_frame_assoc *assoc = (void *) skb->data;
struct wlp_session *session = wlp->session;
u8 version;
d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb);
if (wlp_get_version(wlp, &assoc->version, &version,
sizeof(assoc->version)) < 0)
@ -150,14 +141,12 @@ void wlp_receive_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
} else {
wlp_direct_assoc_frame(wlp, skb, src);
}
d_fnend(5, dev, "wlp %p\n", wlp);
return;
error:
kfree_skb(skb);
d_fnend(5, dev, "wlp %p\n", wlp);
}
/**
/*
* Verify incoming frame is from connected neighbor, prep to pass to WLP client
*
* Verification proceeds according to WLP 0.99 [7.3.1]. The source address
@ -176,7 +165,6 @@ int wlp_verify_prep_rx_frame(struct wlp *wlp, struct sk_buff *skb,
struct wlp_eda_node eda_entry;
struct wlp_frame_std_abbrv_hdr *hdr = (void *) skb->data;
d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb);
/*verify*/
result = wlp_copy_eda_node(&wlp->eda, src, &eda_entry);
if (result < 0) {
@ -207,11 +195,10 @@ int wlp_verify_prep_rx_frame(struct wlp *wlp, struct sk_buff *skb,
/*prep*/
skb_pull(skb, sizeof(*hdr));
out:
d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result);
return result;
}
/**
/*
* Receive a WLP frame from device
*
* @returns: 1 if calling function should free the skb
@ -226,14 +213,12 @@ int wlp_receive_frame(struct device *dev, struct wlp *wlp, struct sk_buff *skb,
struct wlp_frame_hdr *hdr;
int result = 0;
d_fnstart(6, dev, "skb (%p), len (%u)\n", skb, len);
if (len < sizeof(*hdr)) {
dev_err(dev, "Not enough data to parse WLP header.\n");
result = -EINVAL;
goto out;
}
hdr = ptr;
d_dump(6, dev, hdr, sizeof(*hdr));
if (le16_to_cpu(hdr->mux_hdr) != WLP_PROTOCOL_ID) {
dev_err(dev, "Not a WLP frame type.\n");
result = -EINVAL;
@ -270,7 +255,6 @@ int wlp_receive_frame(struct device *dev, struct wlp *wlp, struct sk_buff *skb,
"WLP header.\n");
goto out;
}
d_printf(5, dev, "Association frame received.\n");
wlp_receive_assoc_frame(wlp, skb, src);
break;
default:
@ -283,13 +267,12 @@ int wlp_receive_frame(struct device *dev, struct wlp *wlp, struct sk_buff *skb,
kfree_skb(skb);
result = 0;
}
d_fnend(6, dev, "skb (%p)\n", skb);
return result;
}
EXPORT_SYMBOL_GPL(wlp_receive_frame);
/**
/*
* Verify frame from network stack, prepare for further transmission
*
* @skb: the socket buffer that needs to be prepared for transmission (it
@ -343,9 +326,7 @@ int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp,
int result = -EINVAL;
struct ethhdr *eth_hdr = (void *) skb->data;
d_fnstart(6, dev, "wlp (%p), skb (%p) \n", wlp, skb);
if (is_broadcast_ether_addr(eth_hdr->h_dest)) {
d_printf(6, dev, "WLP: handling broadcast frame. \n");
result = wlp_eda_for_each(&wlp->eda, wlp_wss_send_copy, skb);
if (result < 0) {
if (printk_ratelimit())
@ -357,7 +338,6 @@ int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp,
result = 1;
/* Frame will be transmitted by WLP. */
} else {
d_printf(6, dev, "WLP: handling unicast frame. \n");
result = wlp_eda_for_virtual(&wlp->eda, eth_hdr->h_dest, dst,
wlp_wss_prep_hdr, skb);
if (unlikely(result < 0)) {
@ -368,7 +348,6 @@ int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp,
}
}
out:
d_fnend(6, dev, "wlp (%p), skb (%p). result = %d \n", wlp, skb, result);
return result;
}
EXPORT_SYMBOL_GPL(wlp_prepare_tx_frame);

4
drivers/uwb/wlp/wlp-internal.h
View File

@ -42,10 +42,6 @@ enum wlp_wss_connect {
extern struct kobj_type wss_ktype;
extern struct attribute_group wss_attr_group;
extern int uwb_rc_ie_add(struct uwb_rc *, const struct uwb_ie_hdr *, size_t);
extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie);
/* This should be changed to a dynamic array where entries are sorted
* by eth_addr and search is done in a binary form
*

80
drivers/uwb/wlp/wlp-lc.c
View File

@ -21,12 +21,9 @@
*
* FIXME: docs
*/
#include <linux/wlp.h>
#define D_LOCAL 6
#include <linux/uwb/debug.h>
#include "wlp-internal.h"
#include "wlp-internal.h"
static
void wlp_neighbor_init(struct wlp_neighbor_e *neighbor)
@ -61,11 +58,6 @@ int __wlp_alloc_device_info(struct wlp *wlp)
static
void __wlp_fill_device_info(struct wlp *wlp)
{
struct device *dev = &wlp->rc->uwb_dev.dev;
BUG_ON(wlp->fill_device_info == NULL);
d_printf(6, dev, "Retrieving device information "
"from device driver.\n");
wlp->fill_device_info(wlp, wlp->dev_info);
}
@ -127,7 +119,7 @@ void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *neighbor)
}
}
/**
/*
* Populate WLP neighborhood cache with neighbor information
*
* A new neighbor is found. If it is discoverable then we add it to the
@ -141,10 +133,7 @@ int wlp_add_neighbor(struct wlp *wlp, struct uwb_dev *dev)
int discoverable;
struct wlp_neighbor_e *neighbor;
d_fnstart(6, &dev->dev, "uwb %p \n", dev);
d_printf(6, &dev->dev, "Found neighbor device %02x:%02x \n",
dev->dev_addr.data[1], dev->dev_addr.data[0]);
/**
/*
* FIXME:
* Use contents of WLP IE found in beacon cache to determine if
* neighbor is discoverable.
@ -167,7 +156,6 @@ int wlp_add_neighbor(struct wlp *wlp, struct uwb_dev *dev)
list_add(&neighbor->node, &wlp->neighbors);
}
error_no_mem:
d_fnend(6, &dev->dev, "uwb %p, result = %d \n", dev, result);
return result;
}
@ -255,8 +243,6 @@ int wlp_d1d2_exchange(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
dev_err(dev, "Unable to send D1 frame to neighbor "
"%02x:%02x (%d)\n", dev_addr->data[1],
dev_addr->data[0], result);
d_printf(6, dev, "Add placeholders into buffer next to "
"neighbor information we have (dev address).\n");
goto out;
}
/* Create session, wait for response */
@ -284,8 +270,6 @@ int wlp_d1d2_exchange(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
/* Parse message in session->data: it will be either D2 or F0 */
skb = session.data;
resp = (void *) skb->data;
d_printf(6, dev, "Received response to D1 frame. \n");
d_dump(6, dev, skb->data, skb->len > 72 ? 72 : skb->len);
if (resp->type == WLP_ASSOC_F0) {
result = wlp_parse_f0(wlp, skb);
@ -337,10 +321,9 @@ int wlp_enroll_neighbor(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
struct device *dev = &wlp->rc->uwb_dev.dev;
char buf[WLP_WSS_UUID_STRSIZE];
struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr;
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
d_fnstart(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n",
wlp, neighbor, wss, wssid, buf);
d_printf(6, dev, "Complete me.\n");
result = wlp_d1d2_exchange(wlp, neighbor, wss, wssid);
if (result < 0) {
dev_err(dev, "WLP: D1/D2 message exchange for enrollment "
@ -360,13 +343,10 @@ int wlp_enroll_neighbor(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
goto error;
} else {
wss->state = WLP_WSS_STATE_ENROLLED;
d_printf(2, dev, "WLP: Success Enrollment into unsecure WSS "
"%s using neighbor %02x:%02x. \n", buf,
dev_addr->data[1], dev_addr->data[0]);
dev_dbg(dev, "WLP: Success Enrollment into unsecure WSS "
"%s using neighbor %02x:%02x. \n",
buf, dev_addr->data[1], dev_addr->data[0]);
}
d_fnend(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n",
wlp, neighbor, wss, wssid, buf);
out:
return result;
error:
@ -449,7 +429,6 @@ ssize_t wlp_discover(struct wlp *wlp)
int result = 0;
struct device *dev = &wlp->rc->uwb_dev.dev;
d_fnstart(6, dev, "wlp %p \n", wlp);
mutex_lock(&wlp->nbmutex);
/* Clear current neighborhood cache. */
__wlp_neighbors_release(wlp);
@ -469,7 +448,6 @@ ssize_t wlp_discover(struct wlp *wlp)
}
error_dev_for_each:
mutex_unlock(&wlp->nbmutex);
d_fnend(6, dev, "wlp %p \n", wlp);
return result;
}
@ -492,9 +470,6 @@ void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev,
int result;
switch (event) {
case UWB_NOTIF_ONAIR:
d_printf(6, dev, "UWB device %02x:%02x is onair\n",
uwb_dev->dev_addr.data[1],
uwb_dev->dev_addr.data[0]);
result = wlp_eda_create_node(&wlp->eda,
uwb_dev->mac_addr.data,
&uwb_dev->dev_addr);
@ -505,18 +480,11 @@ void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev,
uwb_dev->dev_addr.data[0]);
break;
case UWB_NOTIF_OFFAIR:
d_printf(6, dev, "UWB device %02x:%02x is offair\n",
uwb_dev->dev_addr.data[1],
uwb_dev->dev_addr.data[0]);
wlp_eda_rm_node(&wlp->eda, &uwb_dev->dev_addr);
mutex_lock(&wlp->nbmutex);
list_for_each_entry_safe(neighbor, next, &wlp->neighbors,
node) {
if (neighbor->uwb_dev == uwb_dev) {
d_printf(6, dev, "Removing device from "
"neighborhood.\n");
list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
if (neighbor->uwb_dev == uwb_dev)
__wlp_neighbor_release(neighbor);
}
}
mutex_unlock(&wlp->nbmutex);
break;
@ -526,38 +494,47 @@ void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev,
}
}
int wlp_setup(struct wlp *wlp, struct uwb_rc *rc)
static void wlp_channel_changed(struct uwb_pal *pal, int channel)
{
struct wlp *wlp = container_of(pal, struct wlp, pal);
if (channel < 0)
netif_carrier_off(wlp->ndev);
else
netif_carrier_on(wlp->ndev);
}
int wlp_setup(struct wlp *wlp, struct uwb_rc *rc, struct net_device *ndev)
{
struct device *dev = &rc->uwb_dev.dev;
int result;
d_fnstart(6, dev, "wlp %p\n", wlp);
BUG_ON(wlp->fill_device_info == NULL);
BUG_ON(wlp->xmit_frame == NULL);
BUG_ON(wlp->stop_queue == NULL);
BUG_ON(wlp->start_queue == NULL);
wlp->rc = rc;
wlp->ndev = ndev;
wlp_eda_init(&wlp->eda);/* Set up address cache */
wlp->uwb_notifs_handler.cb = wlp_uwb_notifs_cb;
wlp->uwb_notifs_handler.data = wlp;
uwb_notifs_register(rc, &wlp->uwb_notifs_handler);
uwb_pal_init(&wlp->pal);
result = uwb_pal_register(rc, &wlp->pal);
wlp->pal.rc = rc;
wlp->pal.channel_changed = wlp_channel_changed;
result = uwb_pal_register(&wlp->pal);
if (result < 0)
uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
return result;
}
EXPORT_SYMBOL_GPL(wlp_setup);
void wlp_remove(struct wlp *wlp)
{
struct device *dev = &wlp->rc->uwb_dev.dev;
d_fnstart(6, dev, "wlp %p\n", wlp);
wlp_neighbors_release(wlp);
uwb_pal_unregister(wlp->rc, &wlp->pal);
uwb_pal_unregister(&wlp->pal);
uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
wlp_eda_release(&wlp->eda);
mutex_lock(&wlp->mutex);
@ -565,9 +542,6 @@ void wlp_remove(struct wlp *wlp)
kfree(wlp->dev_info);
mutex_unlock(&wlp->mutex);
wlp->rc = NULL;
/* We have to use NULL here because this function can be called
* when the device disappeared. */
d_fnend(6, NULL, "wlp %p\n", wlp);
}
EXPORT_SYMBOL_GPL(wlp_remove);

130
drivers/uwb/wlp/wss-lc.c
View File

@ -43,14 +43,11 @@
* wlp_wss_release()
* wlp_wss_reset()
*/
#include <linux/etherdevice.h> /* for is_valid_ether_addr */
#include <linux/skbuff.h>
#include <linux/wlp.h>
#define D_LOCAL 5
#include <linux/uwb/debug.h>
#include "wlp-internal.h"
#include "wlp-internal.h"
size_t wlp_wss_key_print(char *buf, size_t bufsize, u8 *key)
{
@ -116,9 +113,6 @@ struct uwb_mac_addr wlp_wss_sel_bcast_addr(struct wlp_wss *wss)
*/
void wlp_wss_reset(struct wlp_wss *wss)
{
struct wlp *wlp = container_of(wss, struct wlp, wss);
struct device *dev = &wlp->rc->uwb_dev.dev;
d_fnstart(5, dev, "wss (%p) \n", wss);
memset(&wss->wssid, 0, sizeof(wss->wssid));
wss->hash = 0;
memset(&wss->name[0], 0, sizeof(wss->name));
@ -127,7 +121,6 @@ void wlp_wss_reset(struct wlp_wss *wss)
memset(&wss->master_key[0], 0, sizeof(wss->master_key));
wss->tag = 0;
wss->state = WLP_WSS_STATE_NONE;
d_fnend(5, dev, "wss (%p) \n", wss);
}
/**
@ -145,7 +138,6 @@ int wlp_wss_sysfs_add(struct wlp_wss *wss, char *wssid_str)
struct device *dev = &wlp->rc->uwb_dev.dev;
int result;
d_fnstart(5, dev, "wss (%p), wssid: %s\n", wss, wssid_str);
result = kobject_set_name(&wss->kobj, "wss-%s", wssid_str);
if (result < 0)
return result;
@ -162,7 +154,6 @@ int wlp_wss_sysfs_add(struct wlp_wss *wss, char *wssid_str)
result);
goto error_sysfs_create_group;
}
d_fnend(5, dev, "Completed. result = %d \n", result);
return 0;
error_sysfs_create_group:
@ -214,22 +205,14 @@ int wlp_wss_enroll_target(struct wlp_wss *wss, struct wlp_uuid *wssid,
struct wlp *wlp = container_of(wss, struct wlp, wss);
struct device *dev = &wlp->rc->uwb_dev.dev;
struct wlp_neighbor_e *neighbor;
char buf[WLP_WSS_UUID_STRSIZE];
int result = -ENXIO;
struct uwb_dev_addr *dev_addr;
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
d_fnstart(5, dev, "wss %p, wssid %s, registrar %02x:%02x \n",
wss, buf, dest->data[1], dest->data[0]);
mutex_lock(&wlp->nbmutex);
list_for_each_entry(neighbor, &wlp->neighbors, node) {
dev_addr = &neighbor->uwb_dev->dev_addr;
if (!memcmp(dest, dev_addr, sizeof(*dest))) {
d_printf(5, dev, "Neighbor %02x:%02x is valid, "
"enrolling. \n",
dev_addr->data[1], dev_addr->data[0]);
result = wlp_enroll_neighbor(wlp, neighbor, wss,
wssid);
result = wlp_enroll_neighbor(wlp, neighbor, wss, wssid);
break;
}
}
@ -237,8 +220,6 @@ int wlp_wss_enroll_target(struct wlp_wss *wss, struct wlp_uuid *wssid,
dev_err(dev, "WLP: Cannot find neighbor %02x:%02x. \n",
dest->data[1], dest->data[0]);
mutex_unlock(&wlp->nbmutex);
d_fnend(5, dev, "wss %p, wssid %s, registrar %02x:%02x, result %d \n",
wss, buf, dest->data[1], dest->data[0], result);
return result;
}
@ -260,16 +241,11 @@ int wlp_wss_enroll_discovered(struct wlp_wss *wss, struct wlp_uuid *wssid)
char buf[WLP_WSS_UUID_STRSIZE];
int result = -ENXIO;
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
d_fnstart(5, dev, "wss %p, wssid %s \n", wss, buf);
mutex_lock(&wlp->nbmutex);
list_for_each_entry(neighbor, &wlp->neighbors, node) {
list_for_each_entry(wssid_e, &neighbor->wssid, node) {
if (!memcmp(wssid, &wssid_e->wssid, sizeof(*wssid))) {
d_printf(5, dev, "Found WSSID %s in neighbor "
"%02x:%02x cache. \n", buf,
neighbor->uwb_dev->dev_addr.data[1],
neighbor->uwb_dev->dev_addr.data[0]);
result = wlp_enroll_neighbor(wlp, neighbor,
wss, wssid);
if (result == 0) /* enrollment success */
@ -279,10 +255,11 @@ int wlp_wss_enroll_discovered(struct wlp_wss *wss, struct wlp_uuid *wssid)
}
}
out:
if (result == -ENXIO)
if (result == -ENXIO) {
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
dev_err(dev, "WLP: Cannot find WSSID %s in cache. \n", buf);
}
mutex_unlock(&wlp->nbmutex);
d_fnend(5, dev, "wss %p, wssid %s, result %d \n", wss, buf, result);
return result;
}
@ -307,27 +284,22 @@ int wlp_wss_enroll(struct wlp_wss *wss, struct wlp_uuid *wssid,
struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
if (wss->state != WLP_WSS_STATE_NONE) {
dev_err(dev, "WLP: Already enrolled in WSS %s.\n", buf);
result = -EEXIST;
goto error;
}
if (!memcmp(&bcast, devaddr, sizeof(bcast))) {
d_printf(5, dev, "Request to enroll in discovered WSS "
"with WSSID %s \n", buf);
if (!memcmp(&bcast, devaddr, sizeof(bcast)))
result = wlp_wss_enroll_discovered(wss, wssid);
} else {
d_printf(5, dev, "Request to enroll in WSSID %s with "
"registrar %02x:%02x\n", buf, devaddr->data[1],
devaddr->data[0]);
else
result = wlp_wss_enroll_target(wss, wssid, devaddr);
}
if (result < 0) {
dev_err(dev, "WLP: Unable to enroll into WSS %s, result %d \n",
buf, result);
goto error;
}
d_printf(2, dev, "Successfully enrolled into WSS %s \n", buf);
dev_dbg(dev, "Successfully enrolled into WSS %s \n", buf);
result = wlp_wss_sysfs_add(wss, buf);
if (result < 0) {
dev_err(dev, "WLP: Unable to set up sysfs for WSS kobject.\n");
@ -363,7 +335,6 @@ int wlp_wss_activate(struct wlp_wss *wss)
u8 hash; /* only include one hash */
} ie_data;
d_fnstart(5, dev, "Activating WSS %p. \n", wss);
BUG_ON(wss->state != WLP_WSS_STATE_ENROLLED);
wss->hash = wlp_wss_comp_wssid_hash(&wss->wssid);
wss->tag = wss->hash;
@ -382,7 +353,6 @@ int wlp_wss_activate(struct wlp_wss *wss)
wss->state = WLP_WSS_STATE_ACTIVE;
result = 0;
error_wlp_ie:
d_fnend(5, dev, "Activating WSS %p, result = %d \n", wss, result);
return result;
}
@ -405,7 +375,6 @@ int wlp_wss_enroll_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
int result = 0;
char buf[WLP_WSS_UUID_STRSIZE];
d_fnstart(5, dev, "Enrollment and activation requested. \n");
mutex_lock(&wss->mutex);
result = wlp_wss_enroll(wss, wssid, devaddr);
if (result < 0) {
@ -424,7 +393,6 @@ int wlp_wss_enroll_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
error_activate:
error_enroll:
mutex_unlock(&wss->mutex);
d_fnend(5, dev, "Completed. result = %d \n", result);
return result;
}
@ -447,11 +415,9 @@ int wlp_wss_create_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
struct device *dev = &wlp->rc->uwb_dev.dev;
int result = 0;
char buf[WLP_WSS_UUID_STRSIZE];
d_fnstart(5, dev, "Request to create new WSS.\n");
result = wlp_wss_uuid_print(buf, sizeof(buf), wssid);
d_printf(5, dev, "Request to create WSS: WSSID=%s, name=%s, "
"sec_status=%u, accepting enrollment=%u \n",
buf, name, sec_status, accept);
if (!mutex_trylock(&wss->mutex)) {
dev_err(dev, "WLP: WLP association session in progress.\n");
return -EBUSY;
@ -498,7 +464,6 @@ int wlp_wss_create_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
result = 0;
out:
mutex_unlock(&wss->mutex);
d_fnend(5, dev, "Completed. result = %d \n", result);
return result;
}
@ -520,16 +485,12 @@ int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss,
{
int result = 0;
struct device *dev = &wlp->rc->uwb_dev.dev;
char buf[WLP_WSS_UUID_STRSIZE];
DECLARE_COMPLETION_ONSTACK(completion);
struct wlp_session session;
struct sk_buff *skb;
struct wlp_frame_assoc *resp;
struct wlp_uuid wssid;
wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
mutex_lock(&wlp->mutex);
/* Send C1 association frame */
result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C1);
@ -565,8 +526,6 @@ int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss,
/* Parse message in session->data: it will be either C2 or F0 */
skb = session.data;
resp = (void *) skb->data;
d_printf(5, dev, "Received response to C1 frame. \n");
d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len);
if (resp->type == WLP_ASSOC_F0) {
result = wlp_parse_f0(wlp, skb);
if (result < 0)
@ -584,11 +543,9 @@ int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss,
result = 0;
goto error_resp_parse;
}
if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))) {
d_printf(5, dev, "WSSID in C2 frame matches local "
"active WSS.\n");
if (!memcmp(&wssid, &wss->wssid, sizeof(wssid)))
result = 1;
} else {
else {
dev_err(dev, "WLP: Received a C2 frame without matching "
"WSSID.\n");
result = 0;
@ -598,8 +555,6 @@ int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss,
out:
wlp->session = NULL;
mutex_unlock(&wlp->mutex);
d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
return result;
}
@ -620,16 +575,8 @@ int wlp_wss_activate_connection(struct wlp *wlp, struct wlp_wss *wss,
{
struct device *dev = &wlp->rc->uwb_dev.dev;
int result = 0;
char buf[WLP_WSS_UUID_STRSIZE];
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
d_fnstart(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual "
"%02x:%02x:%02x:%02x:%02x:%02x \n", wlp, wss, buf, *tag,
virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]);
if (!memcmp(wssid, &wss->wssid, sizeof(*wssid))) {
d_printf(5, dev, "WSSID from neighbor frame matches local "
"active WSS.\n");
/* Update EDA cache */
result = wlp_eda_update_node(&wlp->eda, dev_addr, wss,
(void *) virt_addr->data, *tag,
@ -638,18 +585,9 @@ int wlp_wss_activate_connection(struct wlp *wlp, struct wlp_wss *wss,
dev_err(dev, "WLP: Unable to update EDA cache "
"with new connected neighbor information.\n");
} else {
dev_err(dev, "WLP: Neighbor does not have matching "
"WSSID.\n");
dev_err(dev, "WLP: Neighbor does not have matching WSSID.\n");
result = -EINVAL;
}
d_fnend(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual "
"%02x:%02x:%02x:%02x:%02x:%02x, result = %d \n",
wlp, wss, buf, *tag,
virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
virt_addr->data[3], virt_addr->data[4], virt_addr->data[5],
result);
return result;
}
@ -665,7 +603,6 @@ int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss,
{
int result;
struct device *dev = &wlp->rc->uwb_dev.dev;
char buf[WLP_WSS_UUID_STRSIZE];
struct wlp_uuid wssid;
u8 tag;
struct uwb_mac_addr virt_addr;
@ -674,9 +611,6 @@ int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss,
struct wlp_frame_assoc *resp;
struct sk_buff *skb;
wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
mutex_lock(&wlp->mutex);
/* Send C3 association frame */
result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C3);
@ -711,8 +645,6 @@ int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss,
/* Parse message in session->data: it will be either C4 or F0 */
skb = session.data;
resp = (void *) skb->data;
d_printf(5, dev, "Received response to C3 frame. \n");
d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len);
if (resp->type == WLP_ASSOC_F0) {
result = wlp_parse_f0(wlp, skb);
if (result < 0)
@ -744,8 +676,6 @@ int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss,
WLP_WSS_CONNECT_FAILED);
wlp->session = NULL;
mutex_unlock(&wlp->mutex);
d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
return result;
}
@ -780,12 +710,8 @@ void wlp_wss_connect_send(struct work_struct *ws)
struct wlp_wss *wss = &wlp->wss;
int result;
struct device *dev = &wlp->rc->uwb_dev.dev;
char buf[WLP_WSS_UUID_STRSIZE];
mutex_lock(&wss->mutex);
wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
if (wss->state < WLP_WSS_STATE_ACTIVE) {
if (printk_ratelimit())
dev_err(dev, "WLP: Attempting to connect with "
@ -836,7 +762,6 @@ void wlp_wss_connect_send(struct work_struct *ws)
BUG_ON(wlp->start_queue == NULL);
wlp->start_queue(wlp);
mutex_unlock(&wss->mutex);
d_fnend(5, dev, "wlp %p, wss %p (wssid %s)\n", wlp, wss, buf);
}
/**
@ -855,7 +780,6 @@ int wlp_wss_prep_hdr(struct wlp *wlp, struct wlp_eda_node *eda_entry,
struct sk_buff *skb = _skb;
struct wlp_frame_std_abbrv_hdr *std_hdr;
d_fnstart(6, dev, "wlp %p \n", wlp);
if (eda_entry->state == WLP_WSS_CONNECTED) {
/* Add WLP header */
BUG_ON(skb_headroom(skb) < sizeof(*std_hdr));
@ -873,7 +797,6 @@ int wlp_wss_prep_hdr(struct wlp *wlp, struct wlp_eda_node *eda_entry,
dev_addr->data[0]);
result = -EINVAL;
}
d_fnend(6, dev, "wlp %p \n", wlp);
return result;
}
@ -893,16 +816,9 @@ int wlp_wss_connect_prep(struct wlp *wlp, struct wlp_eda_node *eda_entry,
{
int result = 0;
struct device *dev = &wlp->rc->uwb_dev.dev;
struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
unsigned char *eth_addr = eda_entry->eth_addr;
struct sk_buff *skb = _skb;
struct wlp_assoc_conn_ctx *conn_ctx;
d_fnstart(5, dev, "wlp %p\n", wlp);
d_printf(5, dev, "To neighbor %02x:%02x with eth "
"%02x:%02x:%02x:%02x:%02x:%02x\n", dev_addr->data[1],
dev_addr->data[0], eth_addr[0], eth_addr[1], eth_addr[2],
eth_addr[3], eth_addr[4], eth_addr[5]);
if (eda_entry->state == WLP_WSS_UNCONNECTED) {
/* We don't want any more packets while we set up connection */
BUG_ON(wlp->stop_queue == NULL);
@ -929,12 +845,9 @@ int wlp_wss_connect_prep(struct wlp *wlp, struct wlp_eda_node *eda_entry,
"previously. Not retrying. \n");
result = -ENONET;
goto out;
} else { /* eda_entry->state == WLP_WSS_CONNECTED */
d_printf(5, dev, "Neighbor is connected, preparing frame.\n");
} else /* eda_entry->state == WLP_WSS_CONNECTED */
result = wlp_wss_prep_hdr(wlp, eda_entry, skb);
}
out:
d_fnend(5, dev, "wlp %p, result = %d \n", wlp, result);
return result;
}
@ -957,8 +870,6 @@ int wlp_wss_send_copy(struct wlp *wlp, struct wlp_eda_node *eda_entry,
struct sk_buff *copy;
struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
d_fnstart(5, dev, "to neighbor %02x:%02x, skb (%p) \n",
dev_addr->data[1], dev_addr->data[0], skb);
copy = skb_copy(skb, GFP_ATOMIC);
if (copy == NULL) {
if (printk_ratelimit())
@ -988,8 +899,6 @@ int wlp_wss_send_copy(struct wlp *wlp, struct wlp_eda_node *eda_entry,
dev_kfree_skb_irq(copy);/*we need to free if tx fails */
}
out:
d_fnend(5, dev, "to neighbor %02x:%02x \n", dev_addr->data[1],
dev_addr->data[0]);
return result;
}
@ -1005,7 +914,7 @@ int wlp_wss_setup(struct net_device *net_dev, struct wlp_wss *wss)
struct wlp *wlp = container_of(wss, struct wlp, wss);
struct device *dev = &wlp->rc->uwb_dev.dev;
int result = 0;
d_fnstart(5, dev, "wss (%p) \n", wss);
mutex_lock(&wss->mutex);
wss->kobj.parent = &net_dev->dev.kobj;
if (!is_valid_ether_addr(net_dev->dev_addr)) {
@ -1018,7 +927,6 @@ int wlp_wss_setup(struct net_device *net_dev, struct wlp_wss *wss)
sizeof(wss->virtual_addr.data));
out:
mutex_unlock(&wss->mutex);
d_fnend(5, dev, "wss (%p) \n", wss);
return result;
}
EXPORT_SYMBOL_GPL(wlp_wss_setup);
@ -1035,8 +943,7 @@ EXPORT_SYMBOL_GPL(wlp_wss_setup);
void wlp_wss_remove(struct wlp_wss *wss)
{
struct wlp *wlp = container_of(wss, struct wlp, wss);
struct device *dev = &wlp->rc->uwb_dev.dev;
d_fnstart(5, dev, "wss (%p) \n", wss);
mutex_lock(&wss->mutex);
if (wss->state == WLP_WSS_STATE_ACTIVE)
uwb_rc_ie_rm(wlp->rc, UWB_IE_WLP);
@ -1050,6 +957,5 @@ void wlp_wss_remove(struct wlp_wss *wss)
wlp_eda_release(&wlp->eda);
wlp_eda_init(&wlp->eda);
mutex_unlock(&wss->mutex);
d_fnend(5, dev, "wss (%p) \n", wss);
}
EXPORT_SYMBOL_GPL(wlp_wss_remove);

1
include/linux/usb/wusb-wa.h
View File

@ -51,6 +51,7 @@ enum {
WUSB_REQ_GET_TIME = 25,
WUSB_REQ_SET_STREAM_IDX = 26,
WUSB_REQ_SET_WUSB_MAS = 27,
WUSB_REQ_CHAN_STOP = 28,
};

123
include/linux/uwb.h
View File

@ -30,6 +30,7 @@
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
#include <linux/uwb/spec.h>
@ -66,6 +67,7 @@ struct uwb_dev {
struct uwb_dev_addr dev_addr;
int beacon_slot;
DECLARE_BITMAP(streams, UWB_NUM_STREAMS);
DECLARE_BITMAP(last_availability_bm, UWB_NUM_MAS);
};
#define to_uwb_dev(d) container_of(d, struct uwb_dev, dev)
@ -86,12 +88,31 @@ struct uwb_notifs_chain {
struct mutex mutex;
};
/* Beacon cache list */
struct uwb_beca {
struct list_head list;
size_t entries;
struct mutex mutex;
};
/* Event handling thread. */
struct uwbd {
int pid;
struct task_struct *task;
wait_queue_head_t wq;
struct list_head event_list;
spinlock_t event_list_lock;
};
/**
* struct uwb_mas_bm - a bitmap of all MAS in a superframe
* @bm: a bitmap of length #UWB_NUM_MAS
*/
struct uwb_mas_bm {
DECLARE_BITMAP(bm, UWB_NUM_MAS);
DECLARE_BITMAP(unsafe_bm, UWB_NUM_MAS);
int safe;
int unsafe;
};
/**
@ -117,14 +138,24 @@ struct uwb_mas_bm {
* FIXME: further target states TBD.
*/
enum uwb_rsv_state {
UWB_RSV_STATE_NONE,
UWB_RSV_STATE_NONE = 0,
UWB_RSV_STATE_O_INITIATED,
UWB_RSV_STATE_O_PENDING,
UWB_RSV_STATE_O_MODIFIED,
UWB_RSV_STATE_O_ESTABLISHED,
UWB_RSV_STATE_O_TO_BE_MOVED,
UWB_RSV_STATE_O_MOVE_EXPANDING,
UWB_RSV_STATE_O_MOVE_COMBINING,
UWB_RSV_STATE_O_MOVE_REDUCING,
UWB_RSV_STATE_T_ACCEPTED,
UWB_RSV_STATE_T_DENIED,
UWB_RSV_STATE_T_CONFLICT,
UWB_RSV_STATE_T_PENDING,
UWB_RSV_STATE_T_EXPANDING_ACCEPTED,
UWB_RSV_STATE_T_EXPANDING_CONFLICT,
UWB_RSV_STATE_T_EXPANDING_PENDING,
UWB_RSV_STATE_T_EXPANDING_DENIED,
UWB_RSV_STATE_T_RESIZED,
UWB_RSV_STATE_LAST,
};
@ -149,6 +180,12 @@ struct uwb_rsv_target {
};
};
struct uwb_rsv_move {
struct uwb_mas_bm final_mas;
struct uwb_ie_drp *companion_drp_ie;
struct uwb_mas_bm companion_mas;
};
/*
* Number of streams reserved for reservations targeted at DevAddrs.
*/
@ -186,6 +223,7 @@ typedef void (*uwb_rsv_cb_f)(struct uwb_rsv *rsv);
*
* @status: negotiation status
* @stream: stream index allocated for this reservation
* @tiebreaker: conflict tiebreaker for this reservation
* @mas: reserved MAS
* @drp_ie: the DRP IE
* @ie_valid: true iff the DRP IE matches the reservation parameters
@ -201,25 +239,29 @@ struct uwb_rsv {
struct uwb_rc *rc;
struct list_head rc_node;
struct list_head pal_node;
struct kref kref;
struct uwb_dev *owner;
struct uwb_rsv_target target;
enum uwb_drp_type type;
int max_mas;
int min_mas;
int sparsity;
int max_interval;
bool is_multicast;
uwb_rsv_cb_f callback;
void *pal_priv;
enum uwb_rsv_state state;
bool needs_release_companion_mas;
u8 stream;
u8 tiebreaker;
struct uwb_mas_bm mas;
struct uwb_ie_drp *drp_ie;
struct uwb_rsv_move mv;
bool ie_valid;
struct timer_list timer;
bool expired;
struct work_struct handle_timeout_work;
};
static const
@ -261,6 +303,13 @@ struct uwb_drp_avail {
bool ie_valid;
};
struct uwb_drp_backoff_win {
u8 window;
u8 n;
int total_expired;
struct timer_list timer;
bool can_reserve_extra_mases;
};
const char *uwb_rsv_state_str(enum uwb_rsv_state state);
const char *uwb_rsv_type_str(enum uwb_drp_type type);
@ -276,6 +325,8 @@ void uwb_rsv_terminate(struct uwb_rsv *rsv);
void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv);
void uwb_rsv_get_usable_mas(struct uwb_rsv *orig_rsv, struct uwb_mas_bm *mas);
/**
* Radio Control Interface instance
*
@ -337,23 +388,33 @@ struct uwb_rc {
u8 ctx_roll;
int beaconing; /* Beaconing state [channel number] */
int beaconing_forced;
int scanning;
enum uwb_scan_type scan_type:3;
unsigned ready:1;
struct uwb_notifs_chain notifs_chain;
struct uwb_beca uwb_beca;
struct uwbd uwbd;
struct uwb_drp_backoff_win bow;
struct uwb_drp_avail drp_avail;
struct list_head reservations;
struct list_head cnflt_alien_list;
struct uwb_mas_bm cnflt_alien_bitmap;
struct mutex rsvs_mutex;
spinlock_t rsvs_lock;
struct workqueue_struct *rsv_workq;
struct work_struct rsv_update_work;
struct delayed_work rsv_update_work;
struct delayed_work rsv_alien_bp_work;
int set_drp_ie_pending;
struct mutex ies_mutex;
struct uwb_rc_cmd_set_ie *ies;
size_t ies_capacity;
spinlock_t pal_lock;
struct list_head pals;
int active_pals;
struct uwb_dbg *dbg;
};
@ -361,11 +422,19 @@ struct uwb_rc {
/**
* struct uwb_pal - a UWB PAL
* @name: descriptive name for this PAL (wushc, wlp, etc.).
* @name: descriptive name for this PAL (wusbhc, wlp, etc.).
* @device: a device for the PAL. Used to link the PAL and the radio
* controller in sysfs.
* @rc: the radio controller the PAL uses.
* @channel_changed: called when the channel used by the radio changes.
* A channel of -1 means the channel has been stopped.
* @new_rsv: called when a peer requests a reservation (may be NULL if
* the PAL cannot accept reservation requests).
* @channel: channel being used by the PAL; 0 if the PAL isn't using
* the radio; -1 if the PAL wishes to use the radio but
* cannot.
* @debugfs_dir: a debugfs directory which the PAL can use for its own
* debugfs files.
*
* A Protocol Adaptation Layer (PAL) is a user of the WiMedia UWB
* radio platform (e.g., WUSB, WLP or Bluetooth UWB AMP).
@ -384,12 +453,21 @@ struct uwb_pal {
struct list_head node;
const char *name;
struct device *device;
void (*new_rsv)(struct uwb_rsv *rsv);
struct uwb_rc *rc;
void (*channel_changed)(struct uwb_pal *pal, int channel);
void (*new_rsv)(struct uwb_pal *pal, struct uwb_rsv *rsv);
int channel;
struct dentry *debugfs_dir;
};
void uwb_pal_init(struct uwb_pal *pal);
int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal);
void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal);
int uwb_pal_register(struct uwb_pal *pal);
void uwb_pal_unregister(struct uwb_pal *pal);
int uwb_radio_start(struct uwb_pal *pal);
void uwb_radio_stop(struct uwb_pal *pal);
/*
* General public API
@ -443,8 +521,6 @@ ssize_t uwb_rc_vcmd(struct uwb_rc *rc, const char *cmd_name,
struct uwb_rccb *cmd, size_t cmd_size,
u8 expected_type, u16 expected_event,
struct uwb_rceb **preply);
ssize_t uwb_rc_get_ie(struct uwb_rc *, struct uwb_rc_evt_get_ie **);
int uwb_bg_joined(struct uwb_rc *rc);
size_t __uwb_addr_print(char *, size_t, const unsigned char *, int);
@ -520,6 +596,8 @@ void uwb_rc_rm(struct uwb_rc *);
void uwb_rc_neh_grok(struct uwb_rc *, void *, size_t);
void uwb_rc_neh_error(struct uwb_rc *, int);
void uwb_rc_reset_all(struct uwb_rc *rc);
void uwb_rc_pre_reset(struct uwb_rc *rc);
void uwb_rc_post_reset(struct uwb_rc *rc);
/**
* uwb_rsv_is_owner - is the owner of this reservation the RC?
@ -531,7 +609,9 @@ static inline bool uwb_rsv_is_owner(struct uwb_rsv *rsv)
}
/**
* Events generated by UWB that can be passed to any listeners
* enum uwb_notifs - UWB events that can be passed to any listeners
* @UWB_NOTIF_ONAIR: a new neighbour has joined the beacon group.
* @UWB_NOTIF_OFFAIR: a neighbour has left the beacon group.
*
* Higher layers can register callback functions with the radio
* controller using uwb_notifs_register(). The radio controller
@ -539,8 +619,6 @@ static inline bool uwb_rsv_is_owner(struct uwb_rsv *rsv)
* nodes when an event occurs.
*/
enum uwb_notifs {
UWB_NOTIF_BG_JOIN = 0, /* radio controller joined a beacon group */
UWB_NOTIF_BG_LEAVE = 1, /* radio controller left a beacon group */
UWB_NOTIF_ONAIR,
UWB_NOTIF_OFFAIR,
};
@ -652,22 +730,9 @@ static inline int edc_inc(struct edc *err_hist, u16 max_err, u16 timeframe)
/* Information Element handling */
/* For representing the state of writing to a buffer when iterating */
struct uwb_buf_ctx {
char *buf;
size_t bytes, size;
};
typedef int (*uwb_ie_f)(struct uwb_dev *, const struct uwb_ie_hdr *,
size_t, void *);
struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
const void *buf, size_t size);
int uwb_ie_dump_hex(struct uwb_dev *, const struct uwb_ie_hdr *,
size_t, void *);
int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *);
struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
int uwb_rc_ie_add(struct uwb_rc *uwb_rc, const struct uwb_ie_hdr *ies, size_t size);
int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id);
/*
* Transmission statistics

13
include/linux/uwb/debug-cmd.h
View File

@ -32,6 +32,10 @@
enum uwb_dbg_cmd_type {
UWB_DBG_CMD_RSV_ESTABLISH = 1,
UWB_DBG_CMD_RSV_TERMINATE = 2,
UWB_DBG_CMD_IE_ADD = 3,
UWB_DBG_CMD_IE_RM = 4,
UWB_DBG_CMD_RADIO_START = 5,
UWB_DBG_CMD_RADIO_STOP = 6,
};
struct uwb_dbg_cmd_rsv_establish {
@ -39,18 +43,25 @@ struct uwb_dbg_cmd_rsv_establish {
__u8 type;
__u16 max_mas;
__u16 min_mas;
__u8 sparsity;
__u8 max_interval;
};
struct uwb_dbg_cmd_rsv_terminate {
int index;
};
struct uwb_dbg_cmd_ie {
__u8 data[128];
int len;
};
struct uwb_dbg_cmd {
__u32 type;
union {
struct uwb_dbg_cmd_rsv_establish rsv_establish;
struct uwb_dbg_cmd_rsv_terminate rsv_terminate;
struct uwb_dbg_cmd_ie ie_add;
struct uwb_dbg_cmd_ie ie_rm;
};
};

82
include/linux/uwb/debug.h
View File

@ -1,82 +0,0 @@
/*
* Ultra Wide Band
* Debug Support
*
* Copyright (C) 2005-2006 Intel Corporation
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*
* FIXME: doc
* Invoke like:
*
* #define D_LOCAL 4
* #include <linux/uwb/debug.h>
*
* At the end of your include files.
*/
#include <linux/types.h>
struct device;
extern void dump_bytes(struct device *dev, const void *_buf, size_t rsize);
/* Master debug switch; !0 enables, 0 disables */
#define D_MASTER (!0)
/* Local (per-file) debug switch; #define before #including */
#ifndef D_LOCAL
#define D_LOCAL 0
#endif
#undef __d_printf
#undef d_fnstart
#undef d_fnend
#undef d_printf
#undef d_dump
#define __d_printf(l, _tag, _dev, f, a...) \
do { \
struct device *__dev = (_dev); \
if (D_MASTER && D_LOCAL >= (l)) { \
char __head[64] = ""; \
if (_dev != NULL) { \
if ((unsigned long)__dev < 4096) \
printk(KERN_ERR "E: Corrupt dev %p\n", \
__dev); \
else \
snprintf(__head, sizeof(__head), \
"%s %s: ", \
dev_driver_string(__dev), \
__dev->bus_id); \
} \
printk(KERN_ERR "%s%s" _tag ": " f, __head, \
__func__, ## a); \
} \
} while (0 && _dev)
#define d_fnstart(l, _dev, f, a...) \
__d_printf(l, " FNSTART", _dev, f, ## a)
#define d_fnend(l, _dev, f, a...) \
__d_printf(l, " FNEND", _dev, f, ## a)
#define d_printf(l, _dev, f, a...) \
__d_printf(l, "", _dev, f, ## a)
#define d_dump(l, _dev, ptr, size) \
do { \
struct device *__dev = _dev; \
if (D_MASTER && D_LOCAL >= (l)) \
dump_bytes(__dev, ptr, size); \
} while (0 && _dev)
#define d_test(l) (D_MASTER && D_LOCAL >= (l))

53
include/linux/uwb/spec.h
View File

@ -58,6 +58,11 @@ enum { UWB_NUM_ZONES = 16 };
*/
#define UWB_MAS_PER_ZONE (UWB_NUM_MAS / UWB_NUM_ZONES)
/*
* Number of MAS required before a row can be considered available.
*/
#define UWB_USABLE_MAS_PER_ROW (UWB_NUM_ZONES - 1)
/*
* Number of streams per DRP reservation between a pair of devices.
*
@ -93,6 +98,26 @@ enum { UWB_BEACON_SLOT_LENGTH_US = 85 };
*/
enum { UWB_MAX_LOST_BEACONS = 3 };
/*
* mDRPBackOffWinMin
*
* The minimum number of superframes to wait before trying to reserve
* extra MAS.
*
* [ECMA-368] section 17.16
*/
enum { UWB_DRP_BACKOFF_WIN_MIN = 2 };
/*
* mDRPBackOffWinMax
*
* The maximum number of superframes to wait before trying to reserve
* extra MAS.
*
* [ECMA-368] section 17.16
*/
enum { UWB_DRP_BACKOFF_WIN_MAX = 16 };
/*
* Length of a superframe in microseconds.
*/
@ -200,6 +225,12 @@ enum uwb_drp_reason {
UWB_DRP_REASON_MODIFIED,
};
/** Relinquish Request Reason Codes ([ECMA-368] table 113) */
enum uwb_relinquish_req_reason {
UWB_RELINQUISH_REQ_REASON_NON_SPECIFIC = 0,
UWB_RELINQUISH_REQ_REASON_OVER_ALLOCATION,
};
/**
* DRP Notification Reason Codes (WHCI 0.95 [3.1.4.9])
*/
@ -252,6 +283,7 @@ enum uwb_ie {
UWB_APP_SPEC_PROBE_IE = 15,
UWB_IDENTIFICATION_IE = 19,
UWB_MASTER_KEY_ID_IE = 20,
UWB_RELINQUISH_REQUEST_IE = 21,
UWB_IE_WLP = 250, /* WiMedia Logical Link Control Protocol WLP 0.99 */
UWB_APP_SPEC_IE = 255,
};
@ -365,6 +397,27 @@ struct uwb_ie_drp_avail {
DECLARE_BITMAP(bmp, UWB_NUM_MAS);
} __attribute__((packed));
/* Relinqish Request IE ([ECMA-368] section 16.8.19). */
struct uwb_relinquish_request_ie {
struct uwb_ie_hdr hdr;
__le16 relinquish_req_control;
struct uwb_dev_addr dev_addr;
struct uwb_drp_alloc allocs[];
} __attribute__((packed));
static inline int uwb_ie_relinquish_req_reason_code(struct uwb_relinquish_request_ie *ie)
{
return (le16_to_cpu(ie->relinquish_req_control) >> 0) & 0xf;
}
static inline void uwb_ie_relinquish_req_set_reason_code(struct uwb_relinquish_request_ie *ie,
int reason_code)
{
u16 ctrl = le16_to_cpu(ie->relinquish_req_control);
ctrl = (ctrl & ~(0xf << 0)) | (reason_code << 0);
ie->relinquish_req_control = cpu_to_le16(ctrl);
}
/**
* The Vendor ID is set to an OUI that indicates the vendor of the device.
* ECMA-368 [16.8.10]

2
include/linux/uwb/umc.h
View File

@ -89,6 +89,8 @@ struct umc_driver {
void (*remove)(struct umc_dev *);
int (*suspend)(struct umc_dev *, pm_message_t state);
int (*resume)(struct umc_dev *);
int (*pre_reset)(struct umc_dev *);
int (*post_reset)(struct umc_dev *);
struct device_driver driver;
};

3
include/linux/wlp.h
View File

@ -646,6 +646,7 @@ struct wlp_wss {
struct wlp {
struct mutex mutex;
struct uwb_rc *rc; /* UWB radio controller */
struct net_device *ndev;
struct uwb_pal pal;
struct wlp_eda eda;
struct wlp_uuid uuid;
@ -675,7 +676,7 @@ struct wlp_wss_attribute {
static struct wlp_wss_attribute wss_attr_##_name = __ATTR(_name, _mode, \
_show, _store)
extern int wlp_setup(struct wlp *, struct uwb_rc *);
extern int wlp_setup(struct wlp *, struct uwb_rc *, struct net_device *ndev);
extern void wlp_remove(struct wlp *);
extern ssize_t wlp_neighborhood_show(struct wlp *, char *);
extern int wlp_wss_setup(struct net_device *, struct wlp_wss *);