wlcore: fwlog dynamic mem_block control

number of fwlog mem_blocks can be configured using module param.
this is a fw debug feature: in case a large fw log data is busrted during
a short period of time, the memory get filled and data is lost.
this allows us to dynamicly set the fw log mem_block usage, although
configuring more mem_block for logger comes at the expense of TP.

Signed-off-by: Yair Shapira <yair.shapira@ti.com>
Signed-off-by: Ido Reis <idor@ti.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>

2 files changed, 20 insertions, 1 deletions

diff --git a/drivers/net/wireless/ti/wlcore/conf.h b/drivers/net/wireless/ti/wlcore/conf.h
index 2b96ff821341..40995c42bef8 100644
--- a/drivers/net/wireless/ti/wlcore/conf.h
+++ b/drivers/net/wireless/ti/wlcore/conf.h
@@ -1274,6 +1274,9 @@ struct conf_rx_streaming_settings {
         u8 always;
 } __packed;
 
+#define CONF_FWLOG_MIN_MEM_BLOCKS       2
+#define CONF_FWLOG_MAX_MEM_BLOCKS       16
+
 struct conf_fwlog {
         /* Continuous or on-demand */
         u8 mode;
@@ -1281,7 +1284,7 @@ struct conf_fwlog {
         /*
          * Number of memory blocks dedicated for the FW logger
          *
-         * Range: 1-3, or 0 to disable the FW logger
+         * Range: 2-16, or 0 to disable the FW logger
          */
         u8 mem_blocks;
 
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 31476656ac81..9a07f4f67885 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -44,6 +44,7 @@
 #define WL1271_BOOT_RETRIES 3
 
 static char *fwlog_param;
+static int fwlog_mem_blocks = -1;
 static int bug_on_recovery = -1;
 static int no_recovery     = -1;
 
@@ -291,6 +292,18 @@ static void wlcore_adjust_conf(struct wl1271 *wl)
 {
         /* Adjust settings according to optional module parameters */
 
+        /* Firmware Logger params */
+        if (fwlog_mem_blocks != -1) {
+                if (fwlog_mem_blocks >= CONF_FWLOG_MIN_MEM_BLOCKS &&
+                    fwlog_mem_blocks <= CONF_FWLOG_MAX_MEM_BLOCKS) {
+                        wl->conf.fwlog.mem_blocks = fwlog_mem_blocks;
+                } else {
+                        wl1271_error(
+                                "Illegal fwlog_mem_blocks=%d using default %d",
+                                fwlog_mem_blocks, wl->conf.fwlog.mem_blocks);
+                }
+        }
+
         if (fwlog_param) {
                 if (!strcmp(fwlog_param, "continuous")) {
                         wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
@@ -6158,6 +6171,9 @@ module_param_named(fwlog, fwlog_param, charp, 0);
 MODULE_PARM_DESC(fwlog,
                  "FW logger options: continuous, ondemand, dbgpins or disable");
 
+module_param(fwlog_mem_blocks, int, S_IRUSR | S_IWUSR);
+MODULE_PARM_DESC(fwlog_mem_blocks, "fwlog mem_blocks");
+
 module_param(bug_on_recovery, int, S_IRUSR | S_IWUSR);
 MODULE_PARM_DESC(bug_on_recovery, "BUG() on fw recovery");