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wl18xx: add support to clear FW statistics 

This patch calls ACX_CLEAR_STATISTICS to clear the firmware
statistics.  The trigger is a new debugfs file called
clear_fw_statistics in the fw_stats directory.

Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Luciano Coelho 2012-06-07 23:39:22 +03:00
parent 3e8d69352b
commit f74ea74b82
3 changed files with 63 additions and 0 deletions
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24
drivers/net/wireless/ti/wl18xx/acx.c
View File

@ -85,3 +85,27 @@ out:
kfree(acx);
return ret;
}
int wl18xx_acx_clear_statistics(struct wl1271 *wl)
{
struct wl18xx_acx_clear_statistics *acx;
int ret = 0;
wl1271_debug(DEBUG_ACX, "acx clear statistics");
acx = kzalloc(sizeof(*acx), GFP_KERNEL);
if (!acx) {
ret = -ENOMEM;
goto out;
}
ret = wl1271_cmd_configure(wl, ACX_CLEAR_STATISTICS, acx, sizeof(*acx));
if (ret < 0) {
wl1271_warning("failed to clear firmware statistics: %d", ret);
goto out;
}
out:
kfree(acx);
return ret;
}

9
drivers/net/wireless/ti/wl18xx/acx.h
View File

@ -25,6 +25,10 @@
#include "../wlcore/wlcore.h"
#include "../wlcore/acx.h"
enum {
ACX_CLEAR_STATISTICS = 0x0047,
};
/* numbers of bits the length field takes (add 1 for the actual number) */
#define WL18XX_HOST_IF_LEN_SIZE_FIELD 15
@ -253,9 +257,14 @@ struct wl18xx_acx_statistics {
struct wl18xx_acx_mem_stats mem;
} __packed;
struct wl18xx_acx_clear_statistics {
struct acx_header header;
};
int wl18xx_acx_host_if_cfg_bitmap(struct wl1271 *wl, u32 host_cfg_bitmap,
u32 sdio_blk_size, u32 extra_mem_blks,
u32 len_field_size);
int wl18xx_acx_set_checksum_state(struct wl1271 *wl);
int wl18xx_acx_clear_statistics(struct wl1271 *wl);
#endif /* __WL18XX_ACX_H__ */

30
drivers/net/wireless/ti/wl18xx/debugfs.c
View File

@ -158,6 +158,34 @@ WL18XX_DEBUGFS_FWSTATS_FILE(mem, tx_free_mem_blks, "%u");
WL18XX_DEBUGFS_FWSTATS_FILE(mem, fwlog_free_mem_blks, "%u");
WL18XX_DEBUGFS_FWSTATS_FILE(mem, fw_gen_free_mem_blks, "%u");
static ssize_t clear_fw_stats_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wl1271 *wl = file->private_data;
int ret;
mutex_lock(&wl->mutex);
if (wl->state == WL1271_STATE_OFF)
goto out;
ret = wl18xx_acx_clear_statistics(wl);
if (ret < 0) {
count = ret;
goto out;
}
out:
mutex_unlock(&wl->mutex);
return count;
}
static const struct file_operations clear_fw_stats_ops = {
.write = clear_fw_stats_write,
.open = simple_open,
.llseek = default_llseek,
};
int wl18xx_debugfs_add_files(struct wl1271 *wl,
struct dentry *rootdir)
{
@ -176,6 +204,8 @@ int wl18xx_debugfs_add_files(struct wl1271 *wl,
goto err;
}
DEBUGFS_ADD(clear_fw_stats, stats);
DEBUGFS_FWSTATS_ADD(debug, debug1);
DEBUGFS_FWSTATS_ADD(debug, debug2);
DEBUGFS_FWSTATS_ADD(debug, debug3);