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linux_dsm_epyc7002/drivers/usb/dwc3/debugfs.c
Greg Kroah-Hartman b5ea47570b USB: dwc3: Remove redundant license text 
Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner.  So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.  And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-07 15:45:01 +01:00

809 lines
20 KiB
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// SPDX-License-Identifier: GPL-2.0
/**
* debugfs.c - DesignWare USB3 DRD Controller DebugFS file
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/ptrace.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/delay.h>
#include <linux/uaccess.h>
#include <linux/usb/ch9.h>
#include "core.h"
#include "gadget.h"
#include "io.h"
#include "debug.h"
#define dump_register(nm) \
{ \
.name = __stringify(nm), \
.offset = DWC3_ ##nm, \
}
#define dump_ep_register_set(n) \
{ \
.name = "DEPCMDPAR2("__stringify(n)")", \
.offset = DWC3_DEP_BASE(n) + \
DWC3_DEPCMDPAR2, \
}, \
{ \
.name = "DEPCMDPAR1("__stringify(n)")", \
.offset = DWC3_DEP_BASE(n) + \
DWC3_DEPCMDPAR1, \
}, \
{ \
.name = "DEPCMDPAR0("__stringify(n)")", \
.offset = DWC3_DEP_BASE(n) + \
DWC3_DEPCMDPAR0, \
}, \
{ \
.name = "DEPCMD("__stringify(n)")", \
.offset = DWC3_DEP_BASE(n) + \
DWC3_DEPCMD, \
}
static const struct debugfs_reg32 dwc3_regs[] = {
dump_register(GSBUSCFG0),
dump_register(GSBUSCFG1),
dump_register(GTXTHRCFG),
dump_register(GRXTHRCFG),
dump_register(GCTL),
dump_register(GEVTEN),
dump_register(GSTS),
dump_register(GUCTL1),
dump_register(GSNPSID),
dump_register(GGPIO),
dump_register(GUID),
dump_register(GUCTL),
dump_register(GBUSERRADDR0),
dump_register(GBUSERRADDR1),
dump_register(GPRTBIMAP0),
dump_register(GPRTBIMAP1),
dump_register(GHWPARAMS0),
dump_register(GHWPARAMS1),
dump_register(GHWPARAMS2),
dump_register(GHWPARAMS3),
dump_register(GHWPARAMS4),
dump_register(GHWPARAMS5),
dump_register(GHWPARAMS6),
dump_register(GHWPARAMS7),
dump_register(GDBGFIFOSPACE),
dump_register(GDBGLTSSM),
dump_register(GPRTBIMAP_HS0),
dump_register(GPRTBIMAP_HS1),
dump_register(GPRTBIMAP_FS0),
dump_register(GPRTBIMAP_FS1),
dump_register(GUSB2PHYCFG(0)),
dump_register(GUSB2PHYCFG(1)),
dump_register(GUSB2PHYCFG(2)),
dump_register(GUSB2PHYCFG(3)),
dump_register(GUSB2PHYCFG(4)),
dump_register(GUSB2PHYCFG(5)),
dump_register(GUSB2PHYCFG(6)),
dump_register(GUSB2PHYCFG(7)),
dump_register(GUSB2PHYCFG(8)),
dump_register(GUSB2PHYCFG(9)),
dump_register(GUSB2PHYCFG(10)),
dump_register(GUSB2PHYCFG(11)),
dump_register(GUSB2PHYCFG(12)),
dump_register(GUSB2PHYCFG(13)),
dump_register(GUSB2PHYCFG(14)),
dump_register(GUSB2PHYCFG(15)),
dump_register(GUSB2I2CCTL(0)),
dump_register(GUSB2I2CCTL(1)),
dump_register(GUSB2I2CCTL(2)),
dump_register(GUSB2I2CCTL(3)),
dump_register(GUSB2I2CCTL(4)),
dump_register(GUSB2I2CCTL(5)),
dump_register(GUSB2I2CCTL(6)),
dump_register(GUSB2I2CCTL(7)),
dump_register(GUSB2I2CCTL(8)),
dump_register(GUSB2I2CCTL(9)),
dump_register(GUSB2I2CCTL(10)),
dump_register(GUSB2I2CCTL(11)),
dump_register(GUSB2I2CCTL(12)),
dump_register(GUSB2I2CCTL(13)),
dump_register(GUSB2I2CCTL(14)),
dump_register(GUSB2I2CCTL(15)),
dump_register(GUSB2PHYACC(0)),
dump_register(GUSB2PHYACC(1)),
dump_register(GUSB2PHYACC(2)),
dump_register(GUSB2PHYACC(3)),
dump_register(GUSB2PHYACC(4)),
dump_register(GUSB2PHYACC(5)),
dump_register(GUSB2PHYACC(6)),
dump_register(GUSB2PHYACC(7)),
dump_register(GUSB2PHYACC(8)),
dump_register(GUSB2PHYACC(9)),
dump_register(GUSB2PHYACC(10)),
dump_register(GUSB2PHYACC(11)),
dump_register(GUSB2PHYACC(12)),
dump_register(GUSB2PHYACC(13)),
dump_register(GUSB2PHYACC(14)),
dump_register(GUSB2PHYACC(15)),
dump_register(GUSB3PIPECTL(0)),
dump_register(GUSB3PIPECTL(1)),
dump_register(GUSB3PIPECTL(2)),
dump_register(GUSB3PIPECTL(3)),
dump_register(GUSB3PIPECTL(4)),
dump_register(GUSB3PIPECTL(5)),
dump_register(GUSB3PIPECTL(6)),
dump_register(GUSB3PIPECTL(7)),
dump_register(GUSB3PIPECTL(8)),
dump_register(GUSB3PIPECTL(9)),
dump_register(GUSB3PIPECTL(10)),
dump_register(GUSB3PIPECTL(11)),
dump_register(GUSB3PIPECTL(12)),
dump_register(GUSB3PIPECTL(13)),
dump_register(GUSB3PIPECTL(14)),
dump_register(GUSB3PIPECTL(15)),
dump_register(GTXFIFOSIZ(0)),
dump_register(GTXFIFOSIZ(1)),
dump_register(GTXFIFOSIZ(2)),
dump_register(GTXFIFOSIZ(3)),
dump_register(GTXFIFOSIZ(4)),
dump_register(GTXFIFOSIZ(5)),
dump_register(GTXFIFOSIZ(6)),
dump_register(GTXFIFOSIZ(7)),
dump_register(GTXFIFOSIZ(8)),
dump_register(GTXFIFOSIZ(9)),
dump_register(GTXFIFOSIZ(10)),
dump_register(GTXFIFOSIZ(11)),
dump_register(GTXFIFOSIZ(12)),
dump_register(GTXFIFOSIZ(13)),
dump_register(GTXFIFOSIZ(14)),
dump_register(GTXFIFOSIZ(15)),
dump_register(GTXFIFOSIZ(16)),
dump_register(GTXFIFOSIZ(17)),
dump_register(GTXFIFOSIZ(18)),
dump_register(GTXFIFOSIZ(19)),
dump_register(GTXFIFOSIZ(20)),
dump_register(GTXFIFOSIZ(21)),
dump_register(GTXFIFOSIZ(22)),
dump_register(GTXFIFOSIZ(23)),
dump_register(GTXFIFOSIZ(24)),
dump_register(GTXFIFOSIZ(25)),
dump_register(GTXFIFOSIZ(26)),
dump_register(GTXFIFOSIZ(27)),
dump_register(GTXFIFOSIZ(28)),
dump_register(GTXFIFOSIZ(29)),
dump_register(GTXFIFOSIZ(30)),
dump_register(GTXFIFOSIZ(31)),
dump_register(GRXFIFOSIZ(0)),
dump_register(GRXFIFOSIZ(1)),
dump_register(GRXFIFOSIZ(2)),
dump_register(GRXFIFOSIZ(3)),
dump_register(GRXFIFOSIZ(4)),
dump_register(GRXFIFOSIZ(5)),
dump_register(GRXFIFOSIZ(6)),
dump_register(GRXFIFOSIZ(7)),
dump_register(GRXFIFOSIZ(8)),
dump_register(GRXFIFOSIZ(9)),
dump_register(GRXFIFOSIZ(10)),
dump_register(GRXFIFOSIZ(11)),
dump_register(GRXFIFOSIZ(12)),
dump_register(GRXFIFOSIZ(13)),
dump_register(GRXFIFOSIZ(14)),
dump_register(GRXFIFOSIZ(15)),
dump_register(GRXFIFOSIZ(16)),
dump_register(GRXFIFOSIZ(17)),
dump_register(GRXFIFOSIZ(18)),
dump_register(GRXFIFOSIZ(19)),
dump_register(GRXFIFOSIZ(20)),
dump_register(GRXFIFOSIZ(21)),
dump_register(GRXFIFOSIZ(22)),
dump_register(GRXFIFOSIZ(23)),
dump_register(GRXFIFOSIZ(24)),
dump_register(GRXFIFOSIZ(25)),
dump_register(GRXFIFOSIZ(26)),
dump_register(GRXFIFOSIZ(27)),
dump_register(GRXFIFOSIZ(28)),
dump_register(GRXFIFOSIZ(29)),
dump_register(GRXFIFOSIZ(30)),
dump_register(GRXFIFOSIZ(31)),
dump_register(GEVNTADRLO(0)),
dump_register(GEVNTADRHI(0)),
dump_register(GEVNTSIZ(0)),
dump_register(GEVNTCOUNT(0)),
dump_register(GHWPARAMS8),
dump_register(DCFG),
dump_register(DCTL),
dump_register(DEVTEN),
dump_register(DSTS),
dump_register(DGCMDPAR),
dump_register(DGCMD),
dump_register(DALEPENA),
dump_ep_register_set(0),
dump_ep_register_set(1),
dump_ep_register_set(2),
dump_ep_register_set(3),
dump_ep_register_set(4),
dump_ep_register_set(5),
dump_ep_register_set(6),
dump_ep_register_set(7),
dump_ep_register_set(8),
dump_ep_register_set(9),
dump_ep_register_set(10),
dump_ep_register_set(11),
dump_ep_register_set(12),
dump_ep_register_set(13),
dump_ep_register_set(14),
dump_ep_register_set(15),
dump_ep_register_set(16),
dump_ep_register_set(17),
dump_ep_register_set(18),
dump_ep_register_set(19),
dump_ep_register_set(20),
dump_ep_register_set(21),
dump_ep_register_set(22),
dump_ep_register_set(23),
dump_ep_register_set(24),
dump_ep_register_set(25),
dump_ep_register_set(26),
dump_ep_register_set(27),
dump_ep_register_set(28),
dump_ep_register_set(29),
dump_ep_register_set(30),
dump_ep_register_set(31),
dump_register(OCFG),
dump_register(OCTL),
dump_register(OEVT),
dump_register(OEVTEN),
dump_register(OSTS),
};
static int dwc3_mode_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
unsigned long flags;
u32 reg;
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
spin_unlock_irqrestore(&dwc->lock, flags);
switch (DWC3_GCTL_PRTCAP(reg)) {
case DWC3_GCTL_PRTCAP_HOST:
seq_printf(s, "host\n");
break;
case DWC3_GCTL_PRTCAP_DEVICE:
seq_printf(s, "device\n");
break;
case DWC3_GCTL_PRTCAP_OTG:
seq_printf(s, "otg\n");
break;
default:
seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
}
return 0;
}
static int dwc3_mode_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_mode_show, inode->i_private);
}
static ssize_t dwc3_mode_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc3 *dwc = s->private;
u32 mode = 0;
char buf[32];
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
if (!strncmp(buf, "host", 4))
mode = DWC3_GCTL_PRTCAP_HOST;
if (!strncmp(buf, "device", 6))
mode = DWC3_GCTL_PRTCAP_DEVICE;
if (!strncmp(buf, "otg", 3))
mode = DWC3_GCTL_PRTCAP_OTG;
dwc3_set_mode(dwc, mode);
return count;
}
static const struct file_operations dwc3_mode_fops = {
.open = dwc3_mode_open,
.write = dwc3_mode_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dwc3_testmode_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
unsigned long flags;
u32 reg;
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= DWC3_DCTL_TSTCTRL_MASK;
reg >>= 1;
spin_unlock_irqrestore(&dwc->lock, flags);
switch (reg) {
case 0:
seq_printf(s, "no test\n");
break;
case TEST_J:
seq_printf(s, "test_j\n");
break;
case TEST_K:
seq_printf(s, "test_k\n");
break;
case TEST_SE0_NAK:
seq_printf(s, "test_se0_nak\n");
break;
case TEST_PACKET:
seq_printf(s, "test_packet\n");
break;
case TEST_FORCE_EN:
seq_printf(s, "test_force_enable\n");
break;
default:
seq_printf(s, "UNKNOWN %d\n", reg);
}
return 0;
}
static int dwc3_testmode_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_testmode_show, inode->i_private);
}
static ssize_t dwc3_testmode_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc3 *dwc = s->private;
unsigned long flags;
u32 testmode = 0;
char buf[32];
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
if (!strncmp(buf, "test_j", 6))
testmode = TEST_J;
else if (!strncmp(buf, "test_k", 6))
testmode = TEST_K;
else if (!strncmp(buf, "test_se0_nak", 12))
testmode = TEST_SE0_NAK;
else if (!strncmp(buf, "test_packet", 11))
testmode = TEST_PACKET;
else if (!strncmp(buf, "test_force_enable", 17))
testmode = TEST_FORCE_EN;
else
testmode = 0;
spin_lock_irqsave(&dwc->lock, flags);
dwc3_gadget_set_test_mode(dwc, testmode);
spin_unlock_irqrestore(&dwc->lock, flags);
return count;
}
static const struct file_operations dwc3_testmode_fops = {
.open = dwc3_testmode_open,
.write = dwc3_testmode_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dwc3_link_state_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
unsigned long flags;
enum dwc3_link_state state;
u32 reg;
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_DSTS);
state = DWC3_DSTS_USBLNKST(reg);
spin_unlock_irqrestore(&dwc->lock, flags);
seq_printf(s, "%s\n", dwc3_gadget_link_string(state));
return 0;
}
static int dwc3_link_state_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_link_state_show, inode->i_private);
}
static ssize_t dwc3_link_state_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc3 *dwc = s->private;
unsigned long flags;
enum dwc3_link_state state = 0;
char buf[32];
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
if (!strncmp(buf, "SS.Disabled", 11))
state = DWC3_LINK_STATE_SS_DIS;
else if (!strncmp(buf, "Rx.Detect", 9))
state = DWC3_LINK_STATE_RX_DET;
else if (!strncmp(buf, "SS.Inactive", 11))
state = DWC3_LINK_STATE_SS_INACT;
else if (!strncmp(buf, "Recovery", 8))
state = DWC3_LINK_STATE_RECOV;
else if (!strncmp(buf, "Compliance", 10))
state = DWC3_LINK_STATE_CMPLY;
else if (!strncmp(buf, "Loopback", 8))
state = DWC3_LINK_STATE_LPBK;
else
return -EINVAL;
spin_lock_irqsave(&dwc->lock, flags);
dwc3_gadget_set_link_state(dwc, state);
spin_unlock_irqrestore(&dwc->lock, flags);
return count;
}
static const struct file_operations dwc3_link_state_fops = {
.open = dwc3_link_state_open,
.write = dwc3_link_state_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
struct dwc3_ep_file_map {
char name[25];
int (*show)(struct seq_file *s, void *unused);
};
static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_RXREQQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_event_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_EVENTQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
spin_lock_irqsave(&dwc->lock, flags);
if (!(dep->flags & DWC3_EP_ENABLED) ||
!dep->endpoint.desc) {
seq_printf(s, "--\n");
goto out;
}
switch (usb_endpoint_type(dep->endpoint.desc)) {
case USB_ENDPOINT_XFER_CONTROL:
seq_printf(s, "control\n");
break;
case USB_ENDPOINT_XFER_ISOC:
seq_printf(s, "isochronous\n");
break;
case USB_ENDPOINT_XFER_BULK:
seq_printf(s, "bulk\n");
break;
case USB_ENDPOINT_XFER_INT:
seq_printf(s, "interrupt\n");
break;
default:
seq_printf(s, "--\n");
}
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
int i;
spin_lock_irqsave(&dwc->lock, flags);
if (dep->number <= 1) {
seq_printf(s, "--\n");
goto out;
}
seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
for (i = 0; i < DWC3_TRB_NUM; i++) {
struct dwc3_trb *trb = &dep->trb_pool[i];
unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl);
seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n",
trb->bph, trb->bpl, trb->size,
dwc3_trb_type_string(type),
!!(trb->ctrl & DWC3_TRB_CTRL_IOC),
!!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI),
!!(trb->ctrl & DWC3_TRB_CTRL_CSP),
!!(trb->ctrl & DWC3_TRB_CTRL_CHN),
!!(trb->ctrl & DWC3_TRB_CTRL_LST),
!!(trb->ctrl & DWC3_TRB_CTRL_HWO),
dep->trb_enqueue == i ? 'E' : ' ',
dep->trb_dequeue == i ? 'D' : ' ');
}
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static struct dwc3_ep_file_map map[] = {
{ "tx_fifo_queue", dwc3_tx_fifo_queue_show, },
{ "rx_fifo_queue", dwc3_rx_fifo_queue_show, },
{ "tx_request_queue", dwc3_tx_request_queue_show, },
{ "rx_request_queue", dwc3_rx_request_queue_show, },
{ "rx_info_queue", dwc3_rx_info_queue_show, },
{ "descriptor_fetch_queue", dwc3_descriptor_fetch_queue_show, },
{ "event_queue", dwc3_event_queue_show, },
{ "transfer_type", dwc3_ep_transfer_type_show, },
{ "trb_ring", dwc3_ep_trb_ring_show, },
};
static int dwc3_endpoint_open(struct inode *inode, struct file *file)
{
const char *file_name = file_dentry(file)->d_iname;
struct dwc3_ep_file_map *f_map;
int i;
for (i = 0; i < ARRAY_SIZE(map); i++) {
f_map = &map[i];
if (strcmp(f_map->name, file_name) == 0)
break;
}
return single_open(file, f_map->show, inode->i_private);
}
static const struct file_operations dwc3_endpoint_fops = {
.open = dwc3_endpoint_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void dwc3_debugfs_create_endpoint_file(struct dwc3_ep *dep,
struct dentry *parent, int type)
{
struct dentry *file;
struct dwc3_ep_file_map *ep_file = &map[type];
file = debugfs_create_file(ep_file->name, S_IRUGO, parent, dep,
&dwc3_endpoint_fops);
}
static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep,
struct dentry *parent)
{
int i;
for (i = 0; i < ARRAY_SIZE(map); i++)
dwc3_debugfs_create_endpoint_file(dep, parent, i);
}
static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep,
struct dentry *parent)
{
struct dentry *dir;
dir = debugfs_create_dir(dep->name, parent);
if (IS_ERR_OR_NULL(dir))
return;
dwc3_debugfs_create_endpoint_files(dep, dir);
}
static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc,
struct dentry *parent)
{
int i;
for (i = 0; i < dwc->num_eps; i++) {
struct dwc3_ep *dep = dwc->eps[i];
if (!dep)
continue;
dwc3_debugfs_create_endpoint_dir(dep, parent);
}
}
void dwc3_debugfs_init(struct dwc3 *dwc)
{
struct dentry *root;
struct dentry *file;
root = debugfs_create_dir(dev_name(dwc->dev), NULL);
if (IS_ERR_OR_NULL(root)) {
if (!root)
dev_err(dwc->dev, "Can't create debugfs root\n");
return;
}
dwc->root = root;
dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
if (!dwc->regset) {
debugfs_remove_recursive(root);
return;
}
dwc->regset->regs = dwc3_regs;
dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
if (!file)
dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_mode_fops);
if (!file)
dev_dbg(dwc->dev, "Can't create debugfs mode\n");
}
if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_testmode_fops);
if (!file)
dev_dbg(dwc->dev, "Can't create debugfs testmode\n");
file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR,
root, dwc, &dwc3_link_state_fops);
if (!file)
dev_dbg(dwc->dev, "Can't create debugfs link_state\n");
dwc3_debugfs_create_endpoint_dirs(dwc, root);
}
}
void dwc3_debugfs_exit(struct dwc3 *dwc)
{
debugfs_remove_recursive(dwc->root);
kfree(dwc->regset);
}
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