brcmfmac: expose sdio internal counters in debugfs

The structure brcmf_sdio contains a number of counters that are useful
for debugging. These were not available in user-space. This patch
exposes them in debugfs under the filename 'counters'.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h
index 0efb226030a4..b784920532d3 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h
@@ -76,6 +76,40 @@ do {									\
 
 extern int brcmf_msg_level;
 
+/*
+ * hold counter variables used in brcmfmac sdio driver.
+ */
+struct brcmf_sdio_count {
+        uint intrcount;         /* Count of device interrupt callbacks */
+        uint lastintrs;         /* Count as of last watchdog timer */
+        uint pollcnt;           /* Count of active polls */
+        uint regfails;          /* Count of R_REG failures */
+        uint tx_sderrs;         /* Count of tx attempts with sd errors */
+        uint fcqueued;          /* Tx packets that got queued */
+        uint rxrtx;             /* Count of rtx requests (NAK to dongle) */
+        uint rx_toolong;        /* Receive frames too long to receive */
+        uint rxc_errors;        /* SDIO errors when reading control frames */
+        uint rx_hdrfail;        /* SDIO errors on header reads */
+        uint rx_badhdr;         /* Bad received headers (roosync?) */
+        uint rx_badseq;         /* Mismatched rx sequence number */
+        uint fc_rcvd;           /* Number of flow-control events received */
+        uint fc_xoff;           /* Number which turned on flow-control */
+        uint fc_xon;            /* Number which turned off flow-control */
+        uint rxglomfail;        /* Failed deglom attempts */
+        uint rxglomframes;      /* Number of glom frames (superframes) */
+        uint rxglompkts;        /* Number of packets from glom frames */
+        uint f2rxhdrs;          /* Number of header reads */
+        uint f2rxdata;          /* Number of frame data reads */
+        uint f2txdata;          /* Number of f2 frame writes */
+        uint f1regdata;         /* Number of f1 register accesses */
+        uint tickcnt;           /* Number of watchdog been schedule */
+        ulong tx_ctlerrs;       /* Err of sending ctrl frames */
+        ulong tx_ctlpkts;       /* Ctrl frames sent to dongle */
+        ulong rx_ctlerrs;       /* Err of processing rx ctrl frames */
+        ulong rx_ctlpkts;       /* Ctrl frames processed from dongle */
+        ulong rx_readahead_cnt; /* packets where header read-ahead was used */
+};
+
 struct brcmf_pub;
 #ifdef DEBUG
 void brcmf_debugfs_init(void);
@@ -83,6 +117,8 @@ void brcmf_debugfs_exit(void);
 int brcmf_debugfs_attach(struct brcmf_pub *drvr);
 void brcmf_debugfs_detach(struct brcmf_pub *drvr);
 struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr);
+void brcmf_debugfs_create_sdio_count(struct brcmf_pub *drvr,
+                                     struct brcmf_sdio_count *sdcnt);
 #else
 static inline void brcmf_debugfs_init(void)
 {