blob: 7879b5314285492dc0ccbffd61098bf5d909af65 [file] [log] [blame]
/*
* Copyright (c) 2004-2011 Atheros Communications 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.
*/
#include "core.h"
#include <linux/circ_buf.h>
#include <linux/fs.h>
#include <linux/vmalloc.h>
#include <linux/export.h>
#include "debug.h"
#include "target.h"
struct ath6kl_fwlog_slot {
__le32 timestamp;
__le32 length;
/* max ATH6KL_FWLOG_PAYLOAD_SIZE bytes */
u8 payload[0];
};
#define ATH6KL_FWLOG_SIZE 32768
#define ATH6KL_FWLOG_SLOT_SIZE (sizeof(struct ath6kl_fwlog_slot) + \
ATH6KL_FWLOG_PAYLOAD_SIZE)
#define ATH6KL_FWLOG_VALID_MASK 0x1ffff
int ath6kl_printk(const char *level, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
int rtn;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
rtn = printk("%sath6kl: %pV", level, &vaf);
va_end(args);
return rtn;
}
#ifdef CONFIG_ATH6KL_DEBUG
#define REG_OUTPUT_LEN_PER_LINE 25
#define REGTYPE_STR_LEN 100
struct ath6kl_diag_reg_info {
u32 reg_start;
u32 reg_end;
const char *reg_info;
};
static const struct ath6kl_diag_reg_info diag_reg[] = {
{ 0x20000, 0x200fc, "General DMA and Rx registers" },
{ 0x28000, 0x28900, "MAC PCU register & keycache" },
{ 0x20800, 0x20a40, "QCU" },
{ 0x21000, 0x212f0, "DCU" },
{ 0x4000, 0x42e4, "RTC" },
{ 0x540000, 0x540000 + (256 * 1024), "RAM" },
{ 0x29800, 0x2B210, "Base Band" },
{ 0x1C000, 0x1C748, "Analog" },
};
void ath6kl_dump_registers(struct ath6kl_device *dev,
struct ath6kl_irq_proc_registers *irq_proc_reg,
struct ath6kl_irq_enable_reg *irq_enable_reg)
{
ath6kl_dbg(ATH6KL_DBG_ANY, ("<------- Register Table -------->\n"));
if (irq_proc_reg != NULL) {
ath6kl_dbg(ATH6KL_DBG_ANY,
"Host Int status: 0x%x\n",
irq_proc_reg->host_int_status);
ath6kl_dbg(ATH6KL_DBG_ANY,
"CPU Int status: 0x%x\n",
irq_proc_reg->cpu_int_status);
ath6kl_dbg(ATH6KL_DBG_ANY,
"Error Int status: 0x%x\n",
irq_proc_reg->error_int_status);
ath6kl_dbg(ATH6KL_DBG_ANY,
"Counter Int status: 0x%x\n",
irq_proc_reg->counter_int_status);
ath6kl_dbg(ATH6KL_DBG_ANY,
"Mbox Frame: 0x%x\n",
irq_proc_reg->mbox_frame);
ath6kl_dbg(ATH6KL_DBG_ANY,
"Rx Lookahead Valid: 0x%x\n",
irq_proc_reg->rx_lkahd_valid);
ath6kl_dbg(ATH6KL_DBG_ANY,
"Rx Lookahead 0: 0x%x\n",
irq_proc_reg->rx_lkahd[0]);
ath6kl_dbg(ATH6KL_DBG_ANY,
"Rx Lookahead 1: 0x%x\n",
irq_proc_reg->rx_lkahd[1]);
if (dev->ar->mbox_info.gmbox_addr != 0) {
/*
* If the target supports GMBOX hardware, dump some
* additional state.
*/
ath6kl_dbg(ATH6KL_DBG_ANY,
"GMBOX Host Int status 2: 0x%x\n",
irq_proc_reg->host_int_status2);
ath6kl_dbg(ATH6KL_DBG_ANY,
"GMBOX RX Avail: 0x%x\n",
irq_proc_reg->gmbox_rx_avail);
ath6kl_dbg(ATH6KL_DBG_ANY,
"GMBOX lookahead alias 0: 0x%x\n",
irq_proc_reg->rx_gmbox_lkahd_alias[0]);
ath6kl_dbg(ATH6KL_DBG_ANY,
"GMBOX lookahead alias 1: 0x%x\n",
irq_proc_reg->rx_gmbox_lkahd_alias[1]);
}
}
if (irq_enable_reg != NULL) {
ath6kl_dbg(ATH6KL_DBG_ANY,
"Int status Enable: 0x%x\n",
irq_enable_reg->int_status_en);
ath6kl_dbg(ATH6KL_DBG_ANY, "Counter Int status Enable: 0x%x\n",
irq_enable_reg->cntr_int_status_en);
}
ath6kl_dbg(ATH6KL_DBG_ANY, "<------------------------------->\n");
}
static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist)
{
ath6kl_dbg(ATH6KL_DBG_ANY,
"--- endpoint: %d svc_id: 0x%X ---\n",
ep_dist->endpoint, ep_dist->svc_id);
ath6kl_dbg(ATH6KL_DBG_ANY, " dist_flags : 0x%X\n",
ep_dist->dist_flags);
ath6kl_dbg(ATH6KL_DBG_ANY, " cred_norm : %d\n",
ep_dist->cred_norm);
ath6kl_dbg(ATH6KL_DBG_ANY, " cred_min : %d\n",
ep_dist->cred_min);
ath6kl_dbg(ATH6KL_DBG_ANY, " credits : %d\n",
ep_dist->credits);
ath6kl_dbg(ATH6KL_DBG_ANY, " cred_assngd : %d\n",
ep_dist->cred_assngd);
ath6kl_dbg(ATH6KL_DBG_ANY, " seek_cred : %d\n",
ep_dist->seek_cred);
ath6kl_dbg(ATH6KL_DBG_ANY, " cred_sz : %d\n",
ep_dist->cred_sz);
ath6kl_dbg(ATH6KL_DBG_ANY, " cred_per_msg : %d\n",
ep_dist->cred_per_msg);
ath6kl_dbg(ATH6KL_DBG_ANY, " cred_to_dist : %d\n",
ep_dist->cred_to_dist);
ath6kl_dbg(ATH6KL_DBG_ANY, " txq_depth : %d\n",
get_queue_depth(&((struct htc_endpoint *)
ep_dist->htc_rsvd)->txq));
ath6kl_dbg(ATH6KL_DBG_ANY,
"----------------------------------\n");
}
void dump_cred_dist_stats(struct htc_target *target)
{
struct htc_endpoint_credit_dist *ep_list;
if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_TRC))
return;
list_for_each_entry(ep_list, &target->cred_dist_list, list)
dump_cred_dist(ep_list);
ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:%p dist:%p\n",
target->cred_dist_cntxt, NULL);
ath6kl_dbg(ATH6KL_DBG_TRC, "credit distribution, total : %d, free : %d\n",
target->cred_dist_cntxt->total_avail_credits,
target->cred_dist_cntxt->cur_free_credits);
}
static int ath6kl_debugfs_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war)
{
switch (war) {
case ATH6KL_WAR_INVALID_RATE:
ar->debug.war_stats.invalid_rate++;
break;
}
}
static ssize_t read_file_war_stats(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
char *buf;
unsigned int len = 0, buf_len = 1500;
ssize_t ret_cnt;
buf = kzalloc(buf_len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%25s\n",
"Workaround stats");
len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
"=================");
len += scnprintf(buf + len, buf_len - len, "%20s %10u\n",
"Invalid rates", ar->debug.war_stats.invalid_rate);
if (WARN_ON(len > buf_len))
len = buf_len;
ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return ret_cnt;
}
static const struct file_operations fops_war_stats = {
.read = read_file_war_stats,
.open = ath6kl_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static void ath6kl_debug_fwlog_add(struct ath6kl *ar, const void *buf,
size_t buf_len)
{
struct circ_buf *fwlog = &ar->debug.fwlog_buf;
size_t space;
int i;
/* entries must all be equal size */
if (WARN_ON(buf_len != ATH6KL_FWLOG_SLOT_SIZE))
return;
space = CIRC_SPACE(fwlog->head, fwlog->tail, ATH6KL_FWLOG_SIZE);
if (space < buf_len)
/* discard oldest slot */
fwlog->tail = (fwlog->tail + ATH6KL_FWLOG_SLOT_SIZE) &
(ATH6KL_FWLOG_SIZE - 1);
for (i = 0; i < buf_len; i += space) {
space = CIRC_SPACE_TO_END(fwlog->head, fwlog->tail,
ATH6KL_FWLOG_SIZE);
if ((size_t) space > buf_len - i)
space = buf_len - i;
memcpy(&fwlog->buf[fwlog->head], buf, space);
fwlog->head = (fwlog->head + space) & (ATH6KL_FWLOG_SIZE - 1);
}
}
void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len)
{
struct ath6kl_fwlog_slot *slot = ar->debug.fwlog_tmp;
size_t slot_len;
if (WARN_ON(len > ATH6KL_FWLOG_PAYLOAD_SIZE))
return;
spin_lock_bh(&ar->debug.fwlog_lock);
slot->timestamp = cpu_to_le32(jiffies);
slot->length = cpu_to_le32(len);
memcpy(slot->payload, buf, len);
slot_len = sizeof(*slot) + len;
if (slot_len < ATH6KL_FWLOG_SLOT_SIZE)
memset(slot->payload + len, 0,
ATH6KL_FWLOG_SLOT_SIZE - slot_len);
ath6kl_debug_fwlog_add(ar, slot, ATH6KL_FWLOG_SLOT_SIZE);
spin_unlock_bh(&ar->debug.fwlog_lock);
}
static bool ath6kl_debug_fwlog_empty(struct ath6kl *ar)
{
return CIRC_CNT(ar->debug.fwlog_buf.head,
ar->debug.fwlog_buf.tail,
ATH6KL_FWLOG_SLOT_SIZE) == 0;
}
static ssize_t ath6kl_fwlog_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
struct circ_buf *fwlog = &ar->debug.fwlog_buf;
size_t len = 0, buf_len = count;
ssize_t ret_cnt;
char *buf;
int ccnt;
buf = vmalloc(buf_len);
if (!buf)
return -ENOMEM;
/* read undelivered logs from firmware */
ath6kl_read_fwlogs(ar);
spin_lock_bh(&ar->debug.fwlog_lock);
while (len < buf_len && !ath6kl_debug_fwlog_empty(ar)) {
ccnt = CIRC_CNT_TO_END(fwlog->head, fwlog->tail,
ATH6KL_FWLOG_SIZE);
if ((size_t) ccnt > buf_len - len)
ccnt = buf_len - len;
memcpy(buf + len, &fwlog->buf[fwlog->tail], ccnt);
len += ccnt;
fwlog->tail = (fwlog->tail + ccnt) &
(ATH6KL_FWLOG_SIZE - 1);
}
spin_unlock_bh(&ar->debug.fwlog_lock);
if (WARN_ON(len > buf_len))
len = buf_len;
ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
vfree(buf);
return ret_cnt;
}
static const struct file_operations fops_fwlog = {
.open = ath6kl_debugfs_open,
.read = ath6kl_fwlog_read,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath6kl_fwlog_mask_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
char buf[16];
int len;
len = snprintf(buf, sizeof(buf), "0x%x\n", ar->debug.fwlog_mask);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t ath6kl_fwlog_mask_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
int ret;
ret = kstrtou32_from_user(user_buf, count, 0, &ar->debug.fwlog_mask);
if (ret)
return ret;
ret = ath6kl_wmi_config_debug_module_cmd(ar->wmi,
ATH6KL_FWLOG_VALID_MASK,
ar->debug.fwlog_mask);
if (ret)
return ret;
return count;
}
static const struct file_operations fops_fwlog_mask = {
.open = ath6kl_debugfs_open,
.read = ath6kl_fwlog_mask_read,
.write = ath6kl_fwlog_mask_write,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
struct target_stats *tgt_stats = &ar->target_stats;
char *buf;
unsigned int len = 0, buf_len = 1500;
int i;
long left;
ssize_t ret_cnt;
buf = kzalloc(buf_len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (down_interruptible(&ar->sem)) {
kfree(buf);
return -EBUSY;
}
set_bit(STATS_UPDATE_PEND, &ar->flag);
if (ath6kl_wmi_get_stats_cmd(ar->wmi)) {
up(&ar->sem);
kfree(buf);
return -EIO;
}
left = wait_event_interruptible_timeout(ar->event_wq,
!test_bit(STATS_UPDATE_PEND,
&ar->flag), WMI_TIMEOUT);
up(&ar->sem);
if (left <= 0) {
kfree(buf);
return -ETIMEDOUT;
}
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%25s\n",
"Target Tx stats");
len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
"=================");
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Ucast packets", tgt_stats->tx_ucast_pkt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Bcast packets", tgt_stats->tx_bcast_pkt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Ucast byte", tgt_stats->tx_ucast_byte);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Bcast byte", tgt_stats->tx_bcast_byte);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Rts success cnt", tgt_stats->tx_rts_success_cnt);
for (i = 0; i < 4; i++)
len += scnprintf(buf + len, buf_len - len,
"%18s %d %10llu\n", "PER on ac",
i, tgt_stats->tx_pkt_per_ac[i]);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Error", tgt_stats->tx_err);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Fail count", tgt_stats->tx_fail_cnt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Retry count", tgt_stats->tx_retry_cnt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Multi retry cnt", tgt_stats->tx_mult_retry_cnt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Rts fail cnt", tgt_stats->tx_rts_fail_cnt);
len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n",
"TKIP counter measure used",
tgt_stats->tkip_cnter_measures_invoked);
len += scnprintf(buf + len, buf_len - len, "%25s\n",
"Target Rx stats");
len += scnprintf(buf + len, buf_len - len, "%25s\n",
"=================");
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Ucast packets", tgt_stats->rx_ucast_pkt);
len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
"Ucast Rate", tgt_stats->rx_ucast_rate);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Bcast packets", tgt_stats->rx_bcast_pkt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Ucast byte", tgt_stats->rx_ucast_byte);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Bcast byte", tgt_stats->rx_bcast_byte);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Fragmented pkt", tgt_stats->rx_frgment_pkt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Error", tgt_stats->rx_err);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"CRC Err", tgt_stats->rx_crc_err);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Key chache miss", tgt_stats->rx_key_cache_miss);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Decrypt Err", tgt_stats->rx_decrypt_err);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Duplicate frame", tgt_stats->rx_dupl_frame);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Tkip Mic failure", tgt_stats->tkip_local_mic_fail);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"TKIP format err", tgt_stats->tkip_fmt_err);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"CCMP format Err", tgt_stats->ccmp_fmt_err);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n",
"CCMP Replay Err", tgt_stats->ccmp_replays);
len += scnprintf(buf + len, buf_len - len, "%25s\n",
"Misc Target stats");
len += scnprintf(buf + len, buf_len - len, "%25s\n",
"=================");
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Beacon Miss count", tgt_stats->cs_bmiss_cnt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Num Connects", tgt_stats->cs_connect_cnt);
len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
"Num disconnects", tgt_stats->cs_discon_cnt);
len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
"Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi);
if (len > buf_len)
len = buf_len;
ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return ret_cnt;
}
static const struct file_operations fops_tgt_stats = {
.read = read_file_tgt_stats,
.open = ath6kl_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
#define print_credit_info(fmt_str, ep_list_field) \
(len += scnprintf(buf + len, buf_len - len, fmt_str, \
ep_list->ep_list_field))
#define CREDIT_INFO_DISPLAY_STRING_LEN 200
#define CREDIT_INFO_LEN 128
static ssize_t read_file_credit_dist_stats(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
struct htc_target *target = ar->htc_target;
struct htc_endpoint_credit_dist *ep_list;
char *buf;
unsigned int buf_len, len = 0;
ssize_t ret_cnt;
buf_len = CREDIT_INFO_DISPLAY_STRING_LEN +
get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN;
buf = kzalloc(buf_len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
"Total Avail Credits: ",
target->cred_dist_cntxt->total_avail_credits);
len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
"Free credits :",
target->cred_dist_cntxt->cur_free_credits);
len += scnprintf(buf + len, buf_len - len,
" Epid Flags Cred_norm Cred_min Credits Cred_assngd"
" Seek_cred Cred_sz Cred_per_msg Cred_to_dist"
" qdepth\n");
list_for_each_entry(ep_list, &target->cred_dist_list, list) {
print_credit_info(" %2d", endpoint);
print_credit_info("%10x", dist_flags);
print_credit_info("%8d", cred_norm);
print_credit_info("%9d", cred_min);
print_credit_info("%9d", credits);
print_credit_info("%10d", cred_assngd);
print_credit_info("%13d", seek_cred);
print_credit_info("%12d", cred_sz);
print_credit_info("%9d", cred_per_msg);
print_credit_info("%14d", cred_to_dist);
len += scnprintf(buf + len, buf_len - len, "%12d\n",
get_queue_depth(&((struct htc_endpoint *)
ep_list->htc_rsvd)->txq));
}
if (len > buf_len)
len = buf_len;
ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return ret_cnt;
}
static const struct file_operations fops_credit_dist_stats = {
.read = read_file_credit_dist_stats,
.open = ath6kl_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static unsigned long ath6kl_get_num_reg(void)
{
int i;
unsigned long n_reg = 0;
for (i = 0; i < ARRAY_SIZE(diag_reg); i++)
n_reg = n_reg +
(diag_reg[i].reg_end - diag_reg[i].reg_start) / 4 + 1;
return n_reg;
}
static bool ath6kl_dbg_is_diag_reg_valid(u32 reg_addr)
{
int i;
for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
if (reg_addr >= diag_reg[i].reg_start &&
reg_addr <= diag_reg[i].reg_end)
return true;
}
return false;
}
static ssize_t ath6kl_regread_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
u8 buf[50];
unsigned int len = 0;
if (ar->debug.dbgfs_diag_reg)
len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n",
ar->debug.dbgfs_diag_reg);
else
len += scnprintf(buf + len, sizeof(buf) - len,
"All diag registers\n");
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t ath6kl_regread_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
u8 buf[50];
unsigned int len;
unsigned long reg_addr;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (strict_strtoul(buf, 0, &reg_addr))
return -EINVAL;
if ((reg_addr % 4) != 0)
return -EINVAL;
if (reg_addr && !ath6kl_dbg_is_diag_reg_valid(reg_addr))
return -EINVAL;
ar->debug.dbgfs_diag_reg = reg_addr;
return count;
}
static const struct file_operations fops_diag_reg_read = {
.read = ath6kl_regread_read,
.write = ath6kl_regread_write,
.open = ath6kl_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static int ath6kl_regdump_open(struct inode *inode, struct file *file)
{
struct ath6kl *ar = inode->i_private;
u8 *buf;
unsigned long int reg_len;
unsigned int len = 0, n_reg;
u32 addr;
__le32 reg_val;
int i, status;
/* Dump all the registers if no register is specified */
if (!ar->debug.dbgfs_diag_reg)
n_reg = ath6kl_get_num_reg();
else
n_reg = 1;
reg_len = n_reg * REG_OUTPUT_LEN_PER_LINE;
if (n_reg > 1)
reg_len += REGTYPE_STR_LEN;
buf = vmalloc(reg_len);
if (!buf)
return -ENOMEM;
if (n_reg == 1) {
addr = ar->debug.dbgfs_diag_reg;
status = ath6kl_diag_read32(ar,
TARG_VTOP(ar->target_type, addr),
(u32 *)&reg_val);
if (status)
goto fail_reg_read;
len += scnprintf(buf + len, reg_len - len,
"0x%06x 0x%08x\n", addr, le32_to_cpu(reg_val));
goto done;
}
for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
len += scnprintf(buf + len, reg_len - len,
"%s\n", diag_reg[i].reg_info);
for (addr = diag_reg[i].reg_start;
addr <= diag_reg[i].reg_end; addr += 4) {
status = ath6kl_diag_read32(ar,
TARG_VTOP(ar->target_type, addr),
(u32 *)&reg_val);
if (status)
goto fail_reg_read;
len += scnprintf(buf + len, reg_len - len,
"0x%06x 0x%08x\n",
addr, le32_to_cpu(reg_val));
}
}
done:
file->private_data = buf;
return 0;
fail_reg_read:
ath6kl_warn("Unable to read memory:%u\n", addr);
vfree(buf);
return -EIO;
}
static ssize_t ath6kl_regdump_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
u8 *buf = file->private_data;
return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
}
static int ath6kl_regdump_release(struct inode *inode, struct file *file)
{
vfree(file->private_data);
return 0;
}
static const struct file_operations fops_reg_dump = {
.open = ath6kl_regdump_open,
.read = ath6kl_regdump_read,
.release = ath6kl_regdump_release,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath6kl_lrssi_roam_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
unsigned long lrssi_roam_threshold;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (strict_strtoul(buf, 0, &lrssi_roam_threshold))
return -EINVAL;
ar->lrssi_roam_threshold = lrssi_roam_threshold;
ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
return count;
}
static ssize_t ath6kl_lrssi_roam_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
char buf[32];
unsigned int len;
len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_lrssi_roam_threshold = {
.read = ath6kl_lrssi_roam_read,
.write = ath6kl_lrssi_roam_write,
.open = ath6kl_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath6kl_regwrite_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
u8 buf[32];
unsigned int len = 0;
len = scnprintf(buf, sizeof(buf), "Addr: 0x%x Val: 0x%x\n",
ar->debug.diag_reg_addr_wr, ar->debug.diag_reg_val_wr);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t ath6kl_regwrite_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
char buf[32];
char *sptr, *token;
unsigned int len = 0;
u32 reg_addr, reg_val;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
sptr = buf;
token = strsep(&sptr, "=");
if (!token)
return -EINVAL;
if (kstrtou32(token, 0, &reg_addr))
return -EINVAL;
if (!ath6kl_dbg_is_diag_reg_valid(reg_addr))
return -EINVAL;
if (kstrtou32(sptr, 0, &reg_val))
return -EINVAL;
ar->debug.diag_reg_addr_wr = reg_addr;
ar->debug.diag_reg_val_wr = reg_val;
if (ath6kl_diag_write32(ar, ar->debug.diag_reg_addr_wr,
cpu_to_le32(ar->debug.diag_reg_val_wr)))
return -EIO;
return count;
}
static const struct file_operations fops_diag_reg_write = {
.read = ath6kl_regwrite_read,
.write = ath6kl_regwrite_write,
.open = ath6kl_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
int ath6kl_debug_init(struct ath6kl *ar)
{
ar->debug.fwlog_buf.buf = vmalloc(ATH6KL_FWLOG_SIZE);
if (ar->debug.fwlog_buf.buf == NULL)
return -ENOMEM;
ar->debug.fwlog_tmp = kmalloc(ATH6KL_FWLOG_SLOT_SIZE, GFP_KERNEL);
if (ar->debug.fwlog_tmp == NULL) {
vfree(ar->debug.fwlog_buf.buf);
return -ENOMEM;
}
spin_lock_init(&ar->debug.fwlog_lock);
/*
* Actually we are lying here but don't know how to read the mask
* value from the firmware.
*/
ar->debug.fwlog_mask = 0;
ar->debugfs_phy = debugfs_create_dir("ath6kl",
ar->wdev->wiphy->debugfsdir);
if (!ar->debugfs_phy) {
vfree(ar->debug.fwlog_buf.buf);
kfree(ar->debug.fwlog_tmp);
return -ENOMEM;
}
debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar,
&fops_tgt_stats);
debugfs_create_file("credit_dist_stats", S_IRUSR, ar->debugfs_phy, ar,
&fops_credit_dist_stats);
debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar,
&fops_fwlog);
debugfs_create_file("fwlog_mask", S_IRUSR | S_IWUSR, ar->debugfs_phy,
ar, &fops_fwlog_mask);
debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
&fops_diag_reg_read);
debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar,
&fops_reg_dump);
debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR,
ar->debugfs_phy, ar, &fops_lrssi_roam_threshold);
debugfs_create_file("reg_write", S_IRUSR | S_IWUSR,
ar->debugfs_phy, ar, &fops_diag_reg_write);
debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar,
&fops_war_stats);
return 0;
}
void ath6kl_debug_cleanup(struct ath6kl *ar)
{
vfree(ar->debug.fwlog_buf.buf);
kfree(ar->debug.fwlog_tmp);
}
#endif