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linux_dsm_epyc7002/drivers/net/wireless/ath/ath6kl/init.c
Vasanthakumar Thiagarajan f32036e823 ath6kl: Fix race in heart beat polling 
Make sure to cancel heart beat timer before
freeing wmi to avoid potential NULL pointer
dereference.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-08-07 10:53:36 +03:00

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/*
* Copyright (c) 2011 Atheros Communications Inc.
* Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/moduleparam.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/of.h>
#include <linux/mmc/sdio_func.h>
#include <linux/vmalloc.h>
#include "core.h"
#include "cfg80211.h"
#include "target.h"
#include "debug.h"
#include "hif-ops.h"
#include "htc-ops.h"
static const struct ath6kl_hw hw_list[] = {
{
.id = AR6003_HW_2_0_VERSION,
.name = "ar6003 hw 2.0",
.dataset_patch_addr = 0x57e884,
.app_load_addr = 0x543180,
.board_ext_data_addr = 0x57e500,
.reserved_ram_size = 6912,
.refclk_hz = 26000000,
.uarttx_pin = 8,
.flags = ATH6KL_HW_SDIO_CRC_ERROR_WAR,
/* hw2.0 needs override address hardcoded */
.app_start_override_addr = 0x944C00,
.fw = {
.dir = AR6003_HW_2_0_FW_DIR,
.otp = AR6003_HW_2_0_OTP_FILE,
.fw = AR6003_HW_2_0_FIRMWARE_FILE,
.tcmd = AR6003_HW_2_0_TCMD_FIRMWARE_FILE,
.patch = AR6003_HW_2_0_PATCH_FILE,
},
.fw_board = AR6003_HW_2_0_BOARD_DATA_FILE,
.fw_default_board = AR6003_HW_2_0_DEFAULT_BOARD_DATA_FILE,
},
{
.id = AR6003_HW_2_1_1_VERSION,
.name = "ar6003 hw 2.1.1",
.dataset_patch_addr = 0x57ff74,
.app_load_addr = 0x1234,
.board_ext_data_addr = 0x542330,
.reserved_ram_size = 512,
.refclk_hz = 26000000,
.uarttx_pin = 8,
.testscript_addr = 0x57ef74,
.flags = ATH6KL_HW_SDIO_CRC_ERROR_WAR,
.fw = {
.dir = AR6003_HW_2_1_1_FW_DIR,
.otp = AR6003_HW_2_1_1_OTP_FILE,
.fw = AR6003_HW_2_1_1_FIRMWARE_FILE,
.tcmd = AR6003_HW_2_1_1_TCMD_FIRMWARE_FILE,
.patch = AR6003_HW_2_1_1_PATCH_FILE,
.utf = AR6003_HW_2_1_1_UTF_FIRMWARE_FILE,
.testscript = AR6003_HW_2_1_1_TESTSCRIPT_FILE,
},
.fw_board = AR6003_HW_2_1_1_BOARD_DATA_FILE,
.fw_default_board = AR6003_HW_2_1_1_DEFAULT_BOARD_DATA_FILE,
},
{
.id = AR6004_HW_1_0_VERSION,
.name = "ar6004 hw 1.0",
.dataset_patch_addr = 0x57e884,
.app_load_addr = 0x1234,
.board_ext_data_addr = 0x437000,
.reserved_ram_size = 19456,
.board_addr = 0x433900,
.refclk_hz = 26000000,
.uarttx_pin = 11,
.flags = ATH6KL_HW_64BIT_RATES |
ATH6KL_HW_AP_INACTIVITY_MINS,
.fw = {
.dir = AR6004_HW_1_0_FW_DIR,
.fw = AR6004_HW_1_0_FIRMWARE_FILE,
},
.fw_board = AR6004_HW_1_0_BOARD_DATA_FILE,
.fw_default_board = AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE,
},
{
.id = AR6004_HW_1_1_VERSION,
.name = "ar6004 hw 1.1",
.dataset_patch_addr = 0x57e884,
.app_load_addr = 0x1234,
.board_ext_data_addr = 0x437000,
.reserved_ram_size = 11264,
.board_addr = 0x43d400,
.refclk_hz = 40000000,
.uarttx_pin = 11,
.flags = ATH6KL_HW_64BIT_RATES |
ATH6KL_HW_AP_INACTIVITY_MINS,
.fw = {
.dir = AR6004_HW_1_1_FW_DIR,
.fw = AR6004_HW_1_1_FIRMWARE_FILE,
},
.fw_board = AR6004_HW_1_1_BOARD_DATA_FILE,
.fw_default_board = AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE,
},
{
.id = AR6004_HW_1_2_VERSION,
.name = "ar6004 hw 1.2",
.dataset_patch_addr = 0x436ecc,
.app_load_addr = 0x1234,
.board_ext_data_addr = 0x437000,
.reserved_ram_size = 9216,
.board_addr = 0x435c00,
.refclk_hz = 40000000,
.uarttx_pin = 11,
.flags = ATH6KL_HW_64BIT_RATES |
ATH6KL_HW_AP_INACTIVITY_MINS,
.fw = {
.dir = AR6004_HW_1_2_FW_DIR,
.fw = AR6004_HW_1_2_FIRMWARE_FILE,
},
.fw_board = AR6004_HW_1_2_BOARD_DATA_FILE,
.fw_default_board = AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE,
},
{
.id = AR6004_HW_1_3_VERSION,
.name = "ar6004 hw 1.3",
.dataset_patch_addr = 0x437860,
.app_load_addr = 0x1234,
.board_ext_data_addr = 0x437000,
.reserved_ram_size = 7168,
.board_addr = 0x436400,
.refclk_hz = 40000000,
.uarttx_pin = 11,
.flags = ATH6KL_HW_64BIT_RATES |
ATH6KL_HW_AP_INACTIVITY_MINS |
ATH6KL_HW_MAP_LP_ENDPOINT,
.fw = {
.dir = AR6004_HW_1_3_FW_DIR,
.fw = AR6004_HW_1_3_FIRMWARE_FILE,
},
.fw_board = AR6004_HW_1_3_BOARD_DATA_FILE,
.fw_default_board = AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE,
},
};
/*
* Include definitions here that can be used to tune the WLAN module
* behavior. Different customers can tune the behavior as per their needs,
* here.
*/
/*
* This configuration item enable/disable keepalive support.
* Keepalive support: In the absence of any data traffic to AP, null
* frames will be sent to the AP at periodic interval, to keep the association
* active. This configuration item defines the periodic interval.
* Use value of zero to disable keepalive support
* Default: 60 seconds
*/
#define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60
/*
* This configuration item sets the value of disconnect timeout
* Firmware delays sending the disconnec event to the host for this
* timeout after is gets disconnected from the current AP.
* If the firmware successly roams within the disconnect timeout
* it sends a new connect event
*/
#define WLAN_CONFIG_DISCONNECT_TIMEOUT 10
#define ATH6KL_DATA_OFFSET 64
struct sk_buff *ath6kl_buf_alloc(int size)
{
struct sk_buff *skb;
u16 reserved;
/* Add chacheline space at front and back of buffer */
reserved = roundup((2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET +
sizeof(struct htc_packet) + ATH6KL_HTC_ALIGN_BYTES, 4);
skb = dev_alloc_skb(size + reserved);
if (skb)
skb_reserve(skb, reserved - L1_CACHE_BYTES);
return skb;
}
void ath6kl_init_profile_info(struct ath6kl_vif *vif)
{
vif->ssid_len = 0;
memset(vif->ssid, 0, sizeof(vif->ssid));
vif->dot11_auth_mode = OPEN_AUTH;
vif->auth_mode = NONE_AUTH;
vif->prwise_crypto = NONE_CRYPT;
vif->prwise_crypto_len = 0;
vif->grp_crypto = NONE_CRYPT;
vif->grp_crypto_len = 0;
memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
memset(vif->bssid, 0, sizeof(vif->bssid));
vif->bss_ch = 0;
}
static int ath6kl_set_host_app_area(struct ath6kl *ar)
{
u32 address, data;
struct host_app_area host_app_area;
/* Fetch the address of the host_app_area_s
* instance in the host interest area */
address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest));
address = TARG_VTOP(ar->target_type, address);
if (ath6kl_diag_read32(ar, address, &data))
return -EIO;
address = TARG_VTOP(ar->target_type, data);
host_app_area.wmi_protocol_ver = cpu_to_le32(WMI_PROTOCOL_VERSION);
if (ath6kl_diag_write(ar, address, (u8 *) &host_app_area,
sizeof(struct host_app_area)))
return -EIO;
return 0;
}
static inline void set_ac2_ep_map(struct ath6kl *ar,
u8 ac,
enum htc_endpoint_id ep)
{
ar->ac2ep_map[ac] = ep;
ar->ep2ac_map[ep] = ac;
}
/* connect to a service */
static int ath6kl_connectservice(struct ath6kl *ar,
struct htc_service_connect_req *con_req,
char *desc)
{
int status;
struct htc_service_connect_resp response;
memset(&response, 0, sizeof(response));
status = ath6kl_htc_conn_service(ar->htc_target, con_req, &response);
if (status) {
ath6kl_err("failed to connect to %s service status:%d\n",
desc, status);
return status;
}
switch (con_req->svc_id) {
case WMI_CONTROL_SVC:
if (test_bit(WMI_ENABLED, &ar->flag))
ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint);
ar->ctrl_ep = response.endpoint;
break;
case WMI_DATA_BE_SVC:
set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint);
break;
case WMI_DATA_BK_SVC:
set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint);
break;
case WMI_DATA_VI_SVC:
set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint);
break;
case WMI_DATA_VO_SVC:
set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint);
break;
default:
ath6kl_err("service id is not mapped %d\n", con_req->svc_id);
return -EINVAL;
}
return 0;
}
static int ath6kl_init_service_ep(struct ath6kl *ar)
{
struct htc_service_connect_req connect;
memset(&connect, 0, sizeof(connect));
/* these fields are the same for all service endpoints */
connect.ep_cb.tx_comp_multi = ath6kl_tx_complete;
connect.ep_cb.rx = ath6kl_rx;
connect.ep_cb.rx_refill = ath6kl_rx_refill;
connect.ep_cb.tx_full = ath6kl_tx_queue_full;
/*
* Set the max queue depth so that our ath6kl_tx_queue_full handler
* gets called.
*/
connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH;
connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4;
if (!connect.ep_cb.rx_refill_thresh)
connect.ep_cb.rx_refill_thresh++;
/* connect to control service */
connect.svc_id = WMI_CONTROL_SVC;
if (ath6kl_connectservice(ar, &connect, "WMI CONTROL"))
return -EIO;
connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN;
/*
* Limit the HTC message size on the send path, although e can
* receive A-MSDU frames of 4K, we will only send ethernet-sized
* (802.3) frames on the send path.
*/
connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH;
/*
* To reduce the amount of committed memory for larger A_MSDU
* frames, use the recv-alloc threshold mechanism for larger
* packets.
*/
connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE;
connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf;
/*
* For the remaining data services set the connection flag to
* reduce dribbling, if configured to do so.
*/
connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB;
connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK;
connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF;
connect.svc_id = WMI_DATA_BE_SVC;
if (ath6kl_connectservice(ar, &connect, "WMI DATA BE"))
return -EIO;
/* connect to back-ground map this to WMI LOW_PRI */
connect.svc_id = WMI_DATA_BK_SVC;
if (ath6kl_connectservice(ar, &connect, "WMI DATA BK"))
return -EIO;
/* connect to Video service, map this to HI PRI */
connect.svc_id = WMI_DATA_VI_SVC;
if (ath6kl_connectservice(ar, &connect, "WMI DATA VI"))
return -EIO;
/*
* Connect to VO service, this is currently not mapped to a WMI
* priority stream due to historical reasons. WMI originally
* defined 3 priorities over 3 mailboxes We can change this when
* WMI is reworked so that priorities are not dependent on
* mailboxes.
*/
connect.svc_id = WMI_DATA_VO_SVC;
if (ath6kl_connectservice(ar, &connect, "WMI DATA VO"))
return -EIO;
return 0;
}
void ath6kl_init_control_info(struct ath6kl_vif *vif)
{
ath6kl_init_profile_info(vif);
vif->def_txkey_index = 0;
memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
vif->ch_hint = 0;
}
/*
* Set HTC/Mbox operational parameters, this can only be called when the
* target is in the BMI phase.
*/
static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val,
u8 htc_ctrl_buf)
{
int status;
u32 blk_size;
blk_size = ar->mbox_info.block_size;
if (htc_ctrl_buf)
blk_size |= ((u32)htc_ctrl_buf) << 16;
/* set the host interest area for the block size */
status = ath6kl_bmi_write_hi32(ar, hi_mbox_io_block_sz, blk_size);
if (status) {
ath6kl_err("bmi_write_memory for IO block size failed\n");
goto out;
}
ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n",
blk_size,
ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz)));
if (mbox_isr_yield_val) {
/* set the host interest area for the mbox ISR yield limit */
status = ath6kl_bmi_write_hi32(ar, hi_mbox_isr_yield_limit,
mbox_isr_yield_val);
if (status) {
ath6kl_err("bmi_write_memory for yield limit failed\n");
goto out;
}
}
out:
return status;
}
static int ath6kl_target_config_wlan_params(struct ath6kl *ar, int idx)
{
int ret;
/*
* Configure the device for rx dot11 header rules. "0,0" are the
* default values. Required if checksum offload is needed. Set
* RxMetaVersion to 2.
*/
ret = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, idx,
ar->rx_meta_ver, 0, 0);
if (ret) {
ath6kl_err("unable to set the rx frame format: %d\n", ret);
return ret;
}
if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN) {
ret = ath6kl_wmi_pmparams_cmd(ar->wmi, idx, 0, 1, 0, 0, 1,
IGNORE_PS_FAIL_DURING_SCAN);
if (ret) {
ath6kl_err("unable to set power save fail event policy: %d\n",
ret);
return ret;
}
}
if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER)) {
ret = ath6kl_wmi_set_lpreamble_cmd(ar->wmi, idx, 0,
WMI_FOLLOW_BARKER_IN_ERP);
if (ret) {
ath6kl_err("unable to set barker preamble policy: %d\n",
ret);
return ret;
}
}
ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, idx,
WLAN_CONFIG_KEEP_ALIVE_INTERVAL);
if (ret) {
ath6kl_err("unable to set keep alive interval: %d\n", ret);
return ret;
}
ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, idx,
WLAN_CONFIG_DISCONNECT_TIMEOUT);
if (ret) {
ath6kl_err("unable to set disconnect timeout: %d\n", ret);
return ret;
}
if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST)) {
ret = ath6kl_wmi_set_wmm_txop(ar->wmi, idx, WMI_TXOP_DISABLED);
if (ret) {
ath6kl_err("unable to set txop bursting: %d\n", ret);
return ret;
}
}
if (ar->p2p && (ar->vif_max == 1 || idx)) {
ret = ath6kl_wmi_info_req_cmd(ar->wmi, idx,
P2P_FLAG_CAPABILITIES_REQ |
P2P_FLAG_MACADDR_REQ |
P2P_FLAG_HMODEL_REQ);
if (ret) {
ath6kl_dbg(ATH6KL_DBG_TRC,
"failed to request P2P capabilities (%d) - assuming P2P not supported\n",
ret);
ar->p2p = false;
}
}
if (ar->p2p && (ar->vif_max == 1 || idx)) {
/* Enable Probe Request reporting for P2P */
ret = ath6kl_wmi_probe_report_req_cmd(ar->wmi, idx, true);
if (ret) {
ath6kl_dbg(ATH6KL_DBG_TRC,
"failed to enable Probe Request reporting (%d)\n",
ret);
}
}
return ret;
}
int ath6kl_configure_target(struct ath6kl *ar)
{
u32 param, ram_reserved_size;
u8 fw_iftype, fw_mode = 0, fw_submode = 0;
int i, status;
param = !!(ar->conf_flags & ATH6KL_CONF_UART_DEBUG);
if (ath6kl_bmi_write_hi32(ar, hi_serial_enable, param)) {
ath6kl_err("bmi_write_memory for uart debug failed\n");
return -EIO;
}
/*
* Note: Even though the firmware interface type is
* chosen as BSS_STA for all three interfaces, can
* be configured to IBSS/AP as long as the fw submode
* remains normal mode (0 - AP, STA and IBSS). But
* due to an target assert in firmware only one interface is
* configured for now.
*/
fw_iftype = HI_OPTION_FW_MODE_BSS_STA;
for (i = 0; i < ar->vif_max; i++)
fw_mode |= fw_iftype << (i * HI_OPTION_FW_MODE_BITS);
/*
* Submodes when fw does not support dynamic interface
* switching:
* vif[0] - AP/STA/IBSS
* vif[1] - "P2P dev"/"P2P GO"/"P2P Client"
* vif[2] - "P2P dev"/"P2P GO"/"P2P Client"
* Otherwise, All the interface are initialized to p2p dev.
*/
if (test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
ar->fw_capabilities)) {
for (i = 0; i < ar->vif_max; i++)
fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
(i * HI_OPTION_FW_SUBMODE_BITS);
} else {
for (i = 0; i < ar->max_norm_iface; i++)
fw_submode |= HI_OPTION_FW_SUBMODE_NONE <<
(i * HI_OPTION_FW_SUBMODE_BITS);
for (i = ar->max_norm_iface; i < ar->vif_max; i++)
fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
(i * HI_OPTION_FW_SUBMODE_BITS);
if (ar->p2p && ar->vif_max == 1)
fw_submode = HI_OPTION_FW_SUBMODE_P2PDEV;
}
if (ath6kl_bmi_write_hi32(ar, hi_app_host_interest,
HTC_PROTOCOL_VERSION) != 0) {
ath6kl_err("bmi_write_memory for htc version failed\n");
return -EIO;
}
/* set the firmware mode to STA/IBSS/AP */
param = 0;
if (ath6kl_bmi_read_hi32(ar, hi_option_flag, &param) != 0) {
ath6kl_err("bmi_read_memory for setting fwmode failed\n");
return -EIO;
}
param |= (ar->vif_max << HI_OPTION_NUM_DEV_SHIFT);
param |= fw_mode << HI_OPTION_FW_MODE_SHIFT;
param |= fw_submode << HI_OPTION_FW_SUBMODE_SHIFT;
param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
if (ath6kl_bmi_write_hi32(ar, hi_option_flag, param) != 0) {
ath6kl_err("bmi_write_memory for setting fwmode failed\n");
return -EIO;
}
ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n");
/*
* Hardcode the address use for the extended board data
* Ideally this should be pre-allocate by the OS at boot time
* But since it is a new feature and board data is loaded
* at init time, we have to workaround this from host.
* It is difficult to patch the firmware boot code,
* but possible in theory.
*/
if (ar->target_type == TARGET_TYPE_AR6003) {
param = ar->hw.board_ext_data_addr;
ram_reserved_size = ar->hw.reserved_ram_size;
if (ath6kl_bmi_write_hi32(ar, hi_board_ext_data, param) != 0) {
ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n");
return -EIO;
}
if (ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz,
ram_reserved_size) != 0) {
ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n");
return -EIO;
}
}
/* set the block size for the target */
if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0))
/* use default number of control buffers */
return -EIO;
/* Configure GPIO AR600x UART */
status = ath6kl_bmi_write_hi32(ar, hi_dbg_uart_txpin,
ar->hw.uarttx_pin);
if (status)
return status;
/* Configure target refclk_hz */
status = ath6kl_bmi_write_hi32(ar, hi_refclk_hz, ar->hw.refclk_hz);
if (status)
return status;
return 0;
}
/* firmware upload */
static int ath6kl_get_fw(struct ath6kl *ar, const char *filename,
u8 **fw, size_t *fw_len)
{
const struct firmware *fw_entry;
int ret;
ret = request_firmware(&fw_entry, filename, ar->dev);
if (ret)
return ret;
*fw_len = fw_entry->size;
*fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
if (*fw == NULL)
ret = -ENOMEM;
release_firmware(fw_entry);
return ret;
}
#ifdef CONFIG_OF
/*
* Check the device tree for a board-id and use it to construct
* the pathname to the firmware file. Used (for now) to find a
* fallback to the "bdata.bin" file--typically a symlink to the
* appropriate board-specific file.
*/
static bool check_device_tree(struct ath6kl *ar)
{
static const char *board_id_prop = "atheros,board-id";
struct device_node *node;
char board_filename[64];
const char *board_id;
int ret;
for_each_compatible_node(node, NULL, "atheros,ath6kl") {
board_id = of_get_property(node, board_id_prop, NULL);
if (board_id == NULL) {
ath6kl_warn("No \"%s\" property on %s node.\n",
board_id_prop, node->name);
continue;
}
snprintf(board_filename, sizeof(board_filename),
"%s/bdata.%s.bin", ar->hw.fw.dir, board_id);
ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board,
&ar->fw_board_len);
if (ret) {
ath6kl_err("Failed to get DT board file %s: %d\n",
board_filename, ret);
continue;
}
return true;
}
return false;
}
#else
static bool check_device_tree(struct ath6kl *ar)
{
return false;
}
#endif /* CONFIG_OF */
static int ath6kl_fetch_board_file(struct ath6kl *ar)
{
const char *filename;
int ret;
if (ar->fw_board != NULL)
return 0;
if (WARN_ON(ar->hw.fw_board == NULL))
return -EINVAL;
filename = ar->hw.fw_board;
ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
&ar->fw_board_len);
if (ret == 0) {
/* managed to get proper board file */
return 0;
}
if (check_device_tree(ar)) {
/* got board file from device tree */
return 0;
}
/* there was no proper board file, try to use default instead */
ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n",
filename, ret);
filename = ar->hw.fw_default_board;
ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
&ar->fw_board_len);
if (ret) {
ath6kl_err("Failed to get default board file %s: %d\n",
filename, ret);
return ret;
}
ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n");
ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n");
return 0;
}
static int ath6kl_fetch_otp_file(struct ath6kl *ar)
{
char filename[100];
int ret;
if (ar->fw_otp != NULL)
return 0;
if (ar->hw.fw.otp == NULL) {
ath6kl_dbg(ATH6KL_DBG_BOOT,
"no OTP file configured for this hw\n");
return 0;
}
snprintf(filename, sizeof(filename), "%s/%s",
ar->hw.fw.dir, ar->hw.fw.otp);
ret = ath6kl_get_fw(ar, filename, &ar->fw_otp,
&ar->fw_otp_len);
if (ret) {
ath6kl_err("Failed to get OTP file %s: %d\n",
filename, ret);
return ret;
}
return 0;
}
static int ath6kl_fetch_testmode_file(struct ath6kl *ar)
{
char filename[100];
int ret;
if (ar->testmode == 0)
return 0;
ath6kl_dbg(ATH6KL_DBG_BOOT, "testmode %d\n", ar->testmode);
if (ar->testmode == 2) {
if (ar->hw.fw.utf == NULL) {
ath6kl_warn("testmode 2 not supported\n");
return -EOPNOTSUPP;
}
snprintf(filename, sizeof(filename), "%s/%s",
ar->hw.fw.dir, ar->hw.fw.utf);
} else {
if (ar->hw.fw.tcmd == NULL) {
ath6kl_warn("testmode 1 not supported\n");
return -EOPNOTSUPP;
}
snprintf(filename, sizeof(filename), "%s/%s",
ar->hw.fw.dir, ar->hw.fw.tcmd);
}
set_bit(TESTMODE, &ar->flag);
ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
if (ret) {
ath6kl_err("Failed to get testmode %d firmware file %s: %d\n",
ar->testmode, filename, ret);
return ret;
}
return 0;
}
static int ath6kl_fetch_fw_file(struct ath6kl *ar)
{
char filename[100];
int ret;
if (ar->fw != NULL)
return 0;
/* FIXME: remove WARN_ON() as we won't support FW API 1 for long */
if (WARN_ON(ar->hw.fw.fw == NULL))
return -EINVAL;
snprintf(filename, sizeof(filename), "%s/%s",
ar->hw.fw.dir, ar->hw.fw.fw);
ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
if (ret) {
ath6kl_err("Failed to get firmware file %s: %d\n",
filename, ret);
return ret;
}
return 0;
}
static int ath6kl_fetch_patch_file(struct ath6kl *ar)
{
char filename[100];
int ret;
if (ar->fw_patch != NULL)
return 0;
if (ar->hw.fw.patch == NULL)
return 0;
snprintf(filename, sizeof(filename), "%s/%s",
ar->hw.fw.dir, ar->hw.fw.patch);
ret = ath6kl_get_fw(ar, filename, &ar->fw_patch,
&ar->fw_patch_len);
if (ret) {
ath6kl_err("Failed to get patch file %s: %d\n",
filename, ret);
return ret;
}
return 0;
}
static int ath6kl_fetch_testscript_file(struct ath6kl *ar)
{
char filename[100];
int ret;
if (ar->testmode != 2)
return 0;
if (ar->fw_testscript != NULL)
return 0;
if (ar->hw.fw.testscript == NULL)
return 0;
snprintf(filename, sizeof(filename), "%s/%s",
ar->hw.fw.dir, ar->hw.fw.testscript);
ret = ath6kl_get_fw(ar, filename, &ar->fw_testscript,
&ar->fw_testscript_len);
if (ret) {
ath6kl_err("Failed to get testscript file %s: %d\n",
filename, ret);
return ret;
}
return 0;
}
static int ath6kl_fetch_fw_api1(struct ath6kl *ar)
{
int ret;
ret = ath6kl_fetch_otp_file(ar);
if (ret)
return ret;
ret = ath6kl_fetch_fw_file(ar);
if (ret)
return ret;
ret = ath6kl_fetch_patch_file(ar);
if (ret)
return ret;
ret = ath6kl_fetch_testscript_file(ar);
if (ret)
return ret;
return 0;
}
static int ath6kl_fetch_fw_apin(struct ath6kl *ar, const char *name)
{
size_t magic_len, len, ie_len;
const struct firmware *fw;
struct ath6kl_fw_ie *hdr;
char filename[100];
const u8 *data;
int ret, ie_id, i, index, bit;
__le32 *val;
snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, name);
ret = request_firmware(&fw, filename, ar->dev);
if (ret)
return ret;
data = fw->data;
len = fw->size;
/* magic also includes the null byte, check that as well */
magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1;
if (len < magic_len) {
ret = -EINVAL;
goto out;
}
if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) {
ret = -EINVAL;
goto out;
}
len -= magic_len;
data += magic_len;
/* loop elements */
while (len > sizeof(struct ath6kl_fw_ie)) {
/* hdr is unaligned! */
hdr = (struct ath6kl_fw_ie *) data;
ie_id = le32_to_cpup(&hdr->id);
ie_len = le32_to_cpup(&hdr->len);
len -= sizeof(*hdr);
data += sizeof(*hdr);
if (len < ie_len) {
ret = -EINVAL;
goto out;
}
switch (ie_id) {
case ATH6KL_FW_IE_FW_VERSION:
strlcpy(ar->wiphy->fw_version, data,
sizeof(ar->wiphy->fw_version));
ath6kl_dbg(ATH6KL_DBG_BOOT,
"found fw version %s\n",
ar->wiphy->fw_version);
break;
case ATH6KL_FW_IE_OTP_IMAGE:
ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n",
ie_len);
ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL);
if (ar->fw_otp == NULL) {
ret = -ENOMEM;
goto out;
}
ar->fw_otp_len = ie_len;
break;
case ATH6KL_FW_IE_FW_IMAGE:
ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n",
ie_len);
/* in testmode we already might have a fw file */
if (ar->fw != NULL)
break;
ar->fw = vmalloc(ie_len);
if (ar->fw == NULL) {
ret = -ENOMEM;
goto out;
}
memcpy(ar->fw, data, ie_len);
ar->fw_len = ie_len;
break;
case ATH6KL_FW_IE_PATCH_IMAGE:
ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n",
ie_len);
ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL);
if (ar->fw_patch == NULL) {
ret = -ENOMEM;
goto out;
}
ar->fw_patch_len = ie_len;
break;
case ATH6KL_FW_IE_RESERVED_RAM_SIZE:
val = (__le32 *) data;
ar->hw.reserved_ram_size = le32_to_cpup(val);
ath6kl_dbg(ATH6KL_DBG_BOOT,
"found reserved ram size ie 0x%d\n",
ar->hw.reserved_ram_size);
break;
case ATH6KL_FW_IE_CAPABILITIES:
ath6kl_dbg(ATH6KL_DBG_BOOT,
"found firmware capabilities ie (%zd B)\n",
ie_len);
for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
index = i / 8;
bit = i % 8;
if (index == ie_len)
break;
if (data[index] & (1 << bit))
__set_bit(i, ar->fw_capabilities);
}
ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "",
ar->fw_capabilities,
sizeof(ar->fw_capabilities));
break;
case ATH6KL_FW_IE_PATCH_ADDR:
if (ie_len != sizeof(*val))
break;
val = (__le32 *) data;
ar->hw.dataset_patch_addr = le32_to_cpup(val);
ath6kl_dbg(ATH6KL_DBG_BOOT,
"found patch address ie 0x%x\n",
ar->hw.dataset_patch_addr);
break;
case ATH6KL_FW_IE_BOARD_ADDR:
if (ie_len != sizeof(*val))
break;
val = (__le32 *) data;
ar->hw.board_addr = le32_to_cpup(val);
ath6kl_dbg(ATH6KL_DBG_BOOT,
"found board address ie 0x%x\n",
ar->hw.board_addr);
break;
case ATH6KL_FW_IE_VIF_MAX:
if (ie_len != sizeof(*val))
break;
val = (__le32 *) data;
ar->vif_max = min_t(unsigned int, le32_to_cpup(val),
ATH6KL_VIF_MAX);
if (ar->vif_max > 1 && !ar->p2p)
ar->max_norm_iface = 2;
ath6kl_dbg(ATH6KL_DBG_BOOT,
"found vif max ie %d\n", ar->vif_max);
break;
default:
ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n",
le32_to_cpup(&hdr->id));
break;
}
len -= ie_len;
data += ie_len;
};
ret = 0;
out:
release_firmware(fw);
return ret;
}
int ath6kl_init_fetch_firmwares(struct ath6kl *ar)
{
int ret;
ret = ath6kl_fetch_board_file(ar);
if (ret)
return ret;
ret = ath6kl_fetch_testmode_file(ar);
if (ret)
return ret;
ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API4_FILE);
if (ret == 0) {
ar->fw_api = 4;
goto out;
}
ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API3_FILE);
if (ret == 0) {
ar->fw_api = 3;
goto out;
}
ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API2_FILE);
if (ret == 0) {
ar->fw_api = 2;
goto out;
}
ret = ath6kl_fetch_fw_api1(ar);
if (ret)
return ret;
ar->fw_api = 1;
out:
ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api %d\n", ar->fw_api);
return 0;
}
static int ath6kl_upload_board_file(struct ath6kl *ar)
{
u32 board_address, board_ext_address, param;
u32 board_data_size, board_ext_data_size;
int ret;
if (WARN_ON(ar->fw_board == NULL))
return -ENOENT;
/*
* Determine where in Target RAM to write Board Data.
* For AR6004, host determine Target RAM address for
* writing board data.
*/
if (ar->hw.board_addr != 0) {
board_address = ar->hw.board_addr;
ath6kl_bmi_write_hi32(ar, hi_board_data,
board_address);
} else {
ath6kl_bmi_read_hi32(ar, hi_board_data, &board_address);
}
/* determine where in target ram to write extended board data */
ath6kl_bmi_read_hi32(ar, hi_board_ext_data, &board_ext_address);
if (ar->target_type == TARGET_TYPE_AR6003 &&
board_ext_address == 0) {
ath6kl_err("Failed to get board file target address.\n");
return -EINVAL;
}
switch (ar->target_type) {
case TARGET_TYPE_AR6003:
board_data_size = AR6003_BOARD_DATA_SZ;
board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ;
if (ar->fw_board_len > (board_data_size + board_ext_data_size))
board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ_V2;
break;
case TARGET_TYPE_AR6004:
board_data_size = AR6004_BOARD_DATA_SZ;
board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ;
break;
default:
WARN_ON(1);
return -EINVAL;
break;
}
if (board_ext_address &&
ar->fw_board_len == (board_data_size + board_ext_data_size)) {
/* write extended board data */
ath6kl_dbg(ATH6KL_DBG_BOOT,
"writing extended board data to 0x%x (%d B)\n",
board_ext_address, board_ext_data_size);
ret = ath6kl_bmi_write(ar, board_ext_address,
ar->fw_board + board_data_size,
board_ext_data_size);
if (ret) {
ath6kl_err("Failed to write extended board data: %d\n",
ret);
return ret;
}
/* record that extended board data is initialized */
param = (board_ext_data_size << 16) | 1;
ath6kl_bmi_write_hi32(ar, hi_board_ext_data_config, param);
}
if (ar->fw_board_len < board_data_size) {
ath6kl_err("Too small board file: %zu\n", ar->fw_board_len);
ret = -EINVAL;
return ret;
}
ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n",
board_address, board_data_size);
ret = ath6kl_bmi_write(ar, board_address, ar->fw_board,
board_data_size);
if (ret) {
ath6kl_err("Board file bmi write failed: %d\n", ret);
return ret;
}
/* record the fact that Board Data IS initialized */
ath6kl_bmi_write_hi32(ar, hi_board_data_initialized, 1);
return ret;
}
static int ath6kl_upload_otp(struct ath6kl *ar)
{
u32 address, param;
bool from_hw = false;
int ret;
if (ar->fw_otp == NULL)
return 0;
address = ar->hw.app_load_addr;
ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address,
ar->fw_otp_len);
ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp,
ar->fw_otp_len);
if (ret) {
ath6kl_err("Failed to upload OTP file: %d\n", ret);
return ret;
}
/* read firmware start address */
ret = ath6kl_bmi_read_hi32(ar, hi_app_start, &address);
if (ret) {
ath6kl_err("Failed to read hi_app_start: %d\n", ret);
return ret;
}
if (ar->hw.app_start_override_addr == 0) {
ar->hw.app_start_override_addr = address;
from_hw = true;
}
ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n",
from_hw ? " (from hw)" : "",
ar->hw.app_start_override_addr);
/* execute the OTP code */
ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n",
ar->hw.app_start_override_addr);
param = 0;
ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, &param);
return ret;
}
static int ath6kl_upload_firmware(struct ath6kl *ar)
{
u32 address;
int ret;
if (WARN_ON(ar->fw == NULL))
return 0;
address = ar->hw.app_load_addr;
ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n",
address, ar->fw_len);
ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len);
if (ret) {
ath6kl_err("Failed to write firmware: %d\n", ret);
return ret;
}
/*
* Set starting address for firmware
* Don't need to setup app_start override addr on AR6004
*/
if (ar->target_type != TARGET_TYPE_AR6004) {
address = ar->hw.app_start_override_addr;
ath6kl_bmi_set_app_start(ar, address);
}
return ret;
}
static int ath6kl_upload_patch(struct ath6kl *ar)
{
u32 address;
int ret;
if (ar->fw_patch == NULL)
return 0;
address = ar->hw.dataset_patch_addr;
ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n",
address, ar->fw_patch_len);
ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len);
if (ret) {
ath6kl_err("Failed to write patch file: %d\n", ret);
return ret;
}
ath6kl_bmi_write_hi32(ar, hi_dset_list_head, address);
return 0;
}
static int ath6kl_upload_testscript(struct ath6kl *ar)
{
u32 address;
int ret;
if (ar->testmode != 2)
return 0;
if (ar->fw_testscript == NULL)
return 0;
address = ar->hw.testscript_addr;
ath6kl_dbg(ATH6KL_DBG_BOOT, "writing testscript to 0x%x (%zd B)\n",
address, ar->fw_testscript_len);
ret = ath6kl_bmi_write(ar, address, ar->fw_testscript,
ar->fw_testscript_len);
if (ret) {
ath6kl_err("Failed to write testscript file: %d\n", ret);
return ret;
}
ath6kl_bmi_write_hi32(ar, hi_ota_testscript, address);
ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz, 4096);
ath6kl_bmi_write_hi32(ar, hi_test_apps_related, 1);
return 0;
}
static int ath6kl_init_upload(struct ath6kl *ar)
{
u32 param, options, sleep, address;
int status = 0;
if (ar->target_type != TARGET_TYPE_AR6003 &&
ar->target_type != TARGET_TYPE_AR6004)
return -EINVAL;
/* temporarily disable system sleep */
address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
status = ath6kl_bmi_reg_read(ar, address, &param);
if (status)
return status;
options = param;
param |= ATH6KL_OPTION_SLEEP_DISABLE;
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
status = ath6kl_bmi_reg_read(ar, address, &param);
if (status)
return status;
sleep = param;
param |= SM(SYSTEM_SLEEP_DISABLE, 1);
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n",
options, sleep);
/* program analog PLL register */
/* no need to control 40/44MHz clock on AR6004 */
if (ar->target_type != TARGET_TYPE_AR6004) {
status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER,
0xF9104001);
if (status)
return status;
/* Run at 80/88MHz by default */
param = SM(CPU_CLOCK_STANDARD, 1);
address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS;
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
}
param = 0;
address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS;
param = SM(LPO_CAL_ENABLE, 1);
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
/* WAR to avoid SDIO CRC err */
if (ar->hw.flags & ATH6KL_HW_SDIO_CRC_ERROR_WAR) {
ath6kl_err("temporary war to avoid sdio crc error\n");
param = 0x28;
address = GPIO_BASE_ADDRESS + GPIO_PIN9_ADDRESS;
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
param = 0x20;
address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS;
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS;
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS;
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS;
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
}
/* write EEPROM data to Target RAM */
status = ath6kl_upload_board_file(ar);
if (status)
return status;
/* transfer One time Programmable data */
status = ath6kl_upload_otp(ar);
if (status)
return status;
/* Download Target firmware */
status = ath6kl_upload_firmware(ar);
if (status)
return status;
status = ath6kl_upload_patch(ar);
if (status)
return status;
/* Download the test script */
status = ath6kl_upload_testscript(ar);
if (status)
return status;
/* Restore system sleep */
address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
status = ath6kl_bmi_reg_write(ar, address, sleep);
if (status)
return status;
address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
param = options | 0x20;
status = ath6kl_bmi_reg_write(ar, address, param);
if (status)
return status;
return status;
}
int ath6kl_init_hw_params(struct ath6kl *ar)
{
const struct ath6kl_hw *uninitialized_var(hw);
int i;
for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
hw = &hw_list[i];
if (hw->id == ar->version.target_ver)
break;
}
if (i == ARRAY_SIZE(hw_list)) {
ath6kl_err("Unsupported hardware version: 0x%x\n",
ar->version.target_ver);
return -EINVAL;
}
ar->hw = *hw;
ath6kl_dbg(ATH6KL_DBG_BOOT,
"target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n",
ar->version.target_ver, ar->target_type,
ar->hw.dataset_patch_addr, ar->hw.app_load_addr);
ath6kl_dbg(ATH6KL_DBG_BOOT,
"app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x",
ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr,
ar->hw.reserved_ram_size);
ath6kl_dbg(ATH6KL_DBG_BOOT,
"refclk_hz %d uarttx_pin %d",
ar->hw.refclk_hz, ar->hw.uarttx_pin);
return 0;
}
static const char *ath6kl_init_get_hif_name(enum ath6kl_hif_type type)
{
switch (type) {
case ATH6KL_HIF_TYPE_SDIO:
return "sdio";
case ATH6KL_HIF_TYPE_USB:
return "usb";
}
return NULL;
}
static const struct fw_capa_str_map {
int id;
const char *name;
} fw_capa_map[] = {
{ ATH6KL_FW_CAPABILITY_HOST_P2P, "host-p2p" },
{ ATH6KL_FW_CAPABILITY_SCHED_SCAN, "sched-scan" },
{ ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, "sta-p2pdev-duplex" },
{ ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT, "inactivity-timeout" },
{ ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, "rsn-cap-override" },
{ ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, "wow-mc-filter" },
{ ATH6KL_FW_CAPABILITY_BMISS_ENHANCE, "bmiss-enhance" },
{ ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST, "sscan-match-list" },
{ ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD, "rssi-scan-thold" },
{ ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR, "custom-mac-addr" },
{ ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, "tx-err-notify" },
{ ATH6KL_FW_CAPABILITY_REGDOMAIN, "regdomain" },
{ ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, "sched-scan-v2" },
{ ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL, "hb-poll" },
};
static const char *ath6kl_init_get_fw_capa_name(unsigned int id)
{
int i;
for (i = 0; i < ARRAY_SIZE(fw_capa_map); i++) {
if (fw_capa_map[i].id == id)
return fw_capa_map[i].name;
}
return "<unknown>";
}
static void ath6kl_init_get_fwcaps(struct ath6kl *ar, char *buf, size_t buf_len)
{
u8 *data = (u8 *) ar->fw_capabilities;
size_t trunc_len, len = 0;
int i, index, bit;
char *trunc = "...";
for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
index = i / 8;
bit = i % 8;
if (index >= sizeof(ar->fw_capabilities) * 4)
break;
if (buf_len - len < 4) {
ath6kl_warn("firmware capability buffer too small!\n");
/* add "..." to the end of string */
trunc_len = strlen(trunc) + 1;
strncpy(buf + buf_len - trunc_len, trunc, trunc_len);
return;
}
if (data[index] & (1 << bit)) {
len += scnprintf(buf + len, buf_len - len, "%s,",
ath6kl_init_get_fw_capa_name(i));
}
}
/* overwrite the last comma */
if (len > 0)
len--;
buf[len] = '\0';
}
static int ath6kl_init_hw_reset(struct ath6kl *ar)
{
ath6kl_dbg(ATH6KL_DBG_BOOT, "cold resetting the device");
return ath6kl_diag_write32(ar, RESET_CONTROL_ADDRESS,
cpu_to_le32(RESET_CONTROL_COLD_RST));
}
static int __ath6kl_init_hw_start(struct ath6kl *ar)
{
long timeleft;
int ret, i;
char buf[200];
ath6kl_dbg(ATH6KL_DBG_BOOT, "hw start\n");
ret = ath6kl_hif_power_on(ar);
if (ret)
return ret;
ret = ath6kl_configure_target(ar);
if (ret)
goto err_power_off;
ret = ath6kl_init_upload(ar);
if (ret)
goto err_power_off;
/* Do we need to finish the BMI phase */
ret = ath6kl_bmi_done(ar);
if (ret)
goto err_power_off;
/*
* The reason we have to wait for the target here is that the
* driver layer has to init BMI in order to set the host block
* size.
*/
ret = ath6kl_htc_wait_target(ar->htc_target);
if (ret == -ETIMEDOUT) {
/*
* Most likely USB target is in odd state after reboot and
* needs a reset. A cold reset makes the whole device
* disappear from USB bus and initialisation starts from
* beginning.
*/
ath6kl_warn("htc wait target timed out, resetting device\n");
ath6kl_init_hw_reset(ar);
goto err_power_off;
} else if (ret) {
ath6kl_err("htc wait target failed: %d\n", ret);
goto err_power_off;
}
ret = ath6kl_init_service_ep(ar);
if (ret) {
ath6kl_err("Endpoint service initilisation failed: %d\n", ret);
goto err_cleanup_scatter;
}
/* setup credit distribution */
ath6kl_htc_credit_setup(ar->htc_target, &ar->credit_state_info);
/* start HTC */
ret = ath6kl_htc_start(ar->htc_target);
if (ret) {
/* FIXME: call this */
ath6kl_cookie_cleanup(ar);
goto err_cleanup_scatter;
}
/* Wait for Wmi event to be ready */
timeleft = wait_event_interruptible_timeout(ar->event_wq,
test_bit(WMI_READY,
&ar->flag),
WMI_TIMEOUT);
if (timeleft <= 0) {
clear_bit(WMI_READY, &ar->flag);
ath6kl_err("wmi is not ready or wait was interrupted: %ld\n",
timeleft);
ret = -EIO;
goto err_htc_stop;
}
ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n");
if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) {
ath6kl_info("%s %s fw %s api %d%s\n",
ar->hw.name,
ath6kl_init_get_hif_name(ar->hif_type),
ar->wiphy->fw_version,
ar->fw_api,
test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
ath6kl_init_get_fwcaps(ar, buf, sizeof(buf));
ath6kl_info("firmware supports: %s\n", buf);
}
if (ar->version.abi_ver != ATH6KL_ABI_VERSION) {
ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n",
ATH6KL_ABI_VERSION, ar->version.abi_ver);
ret = -EIO;
goto err_htc_stop;
}
ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__);
/* communicate the wmi protocol verision to the target */
/* FIXME: return error */
if ((ath6kl_set_host_app_area(ar)) != 0)
ath6kl_err("unable to set the host app area\n");
for (i = 0; i < ar->vif_max; i++) {
ret = ath6kl_target_config_wlan_params(ar, i);
if (ret)
goto err_htc_stop;
}
return 0;
err_htc_stop:
ath6kl_htc_stop(ar->htc_target);
err_cleanup_scatter:
ath6kl_hif_cleanup_scatter(ar);
err_power_off:
ath6kl_hif_power_off(ar);
return ret;
}
int ath6kl_init_hw_start(struct ath6kl *ar)
{
int err;
err = __ath6kl_init_hw_start(ar);
if (err)
return err;
ar->state = ATH6KL_STATE_ON;
return 0;
}
static int __ath6kl_init_hw_stop(struct ath6kl *ar)
{
int ret;
ath6kl_dbg(ATH6KL_DBG_BOOT, "hw stop\n");
ath6kl_htc_stop(ar->htc_target);
ath6kl_hif_stop(ar);
ath6kl_bmi_reset(ar);
ret = ath6kl_hif_power_off(ar);
if (ret)
ath6kl_warn("failed to power off hif: %d\n", ret);
return 0;
}
int ath6kl_init_hw_stop(struct ath6kl *ar)
{
int err;
err = __ath6kl_init_hw_stop(ar);
if (err)
return err;
ar->state = ATH6KL_STATE_OFF;
return 0;
}
void ath6kl_init_hw_restart(struct ath6kl *ar)
{
clear_bit(WMI_READY, &ar->flag);
ath6kl_cfg80211_stop_all(ar);
if (__ath6kl_init_hw_stop(ar)) {
ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to stop during fw error recovery\n");
return;
}
if (__ath6kl_init_hw_start(ar)) {
ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to restart during fw error recovery\n");
return;
}
}
void ath6kl_stop_txrx(struct ath6kl *ar)
{
struct ath6kl_vif *vif, *tmp_vif;
int i;
set_bit(DESTROY_IN_PROGRESS, &ar->flag);
if (down_interruptible(&ar->sem)) {
ath6kl_err("down_interruptible failed\n");
return;
}
for (i = 0; i < AP_MAX_NUM_STA; i++)
aggr_reset_state(ar->sta_list[i].aggr_conn);
spin_lock_bh(&ar->list_lock);
list_for_each_entry_safe(vif, tmp_vif, &ar->vif_list, list) {
list_del(&vif->list);
spin_unlock_bh(&ar->list_lock);
ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
rtnl_lock();
ath6kl_cfg80211_vif_cleanup(vif);
rtnl_unlock();
spin_lock_bh(&ar->list_lock);
}
spin_unlock_bh(&ar->list_lock);
clear_bit(WMI_READY, &ar->flag);
if (ar->fw_recovery.enable)
del_timer_sync(&ar->fw_recovery.hb_timer);
/*
* After wmi_shudown all WMI events will be dropped. We
* need to cleanup the buffers allocated in AP mode and
* give disconnect notification to stack, which usually
* happens in the disconnect_event. Simulate the disconnect
* event by calling the function directly. Sometimes
* disconnect_event will be received when the debug logs
* are collected.
*/
ath6kl_wmi_shutdown(ar->wmi);
clear_bit(WMI_ENABLED, &ar->flag);
if (ar->htc_target) {
ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
ath6kl_htc_stop(ar->htc_target);
}
/*
* Try to reset the device if we can. The driver may have been
* configure NOT to reset the target during a debug session.
*/
ath6kl_init_hw_reset(ar);
up(&ar->sem);
}
EXPORT_SYMBOL(ath6kl_stop_txrx);
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