Debugfs file location: ath9k/<wiphy>/dma
Contains values in DMA debug registers.
Signed-off-by: Sujith <Sujith.Manoharan@xxxxxxxxxxx>
---
drivers/net/wireless/ath9k/ath9k.h | 1 -
drivers/net/wireless/ath9k/beacon.c | 1 -
drivers/net/wireless/ath9k/core.h | 1 +
drivers/net/wireless/ath9k/debug.c | 100 +++++++++++++++++++++++++++++++++++
drivers/net/wireless/ath9k/mac.c | 72 -------------------------
drivers/net/wireless/ath9k/main.c | 1 +
6 files changed, 102 insertions(+), 74 deletions(-)
diff --git a/drivers/net/wireless/ath9k/ath9k.h b/drivers/net/wireless/ath9k/ath9k.h
index 5b9bc54..9eaa3fc 100644
--- a/drivers/net/wireless/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath9k/ath9k.h
@@ -1009,7 +1009,6 @@ enum ath9k_int ath9k_hw_set_interrupts(struct ath_hal *ah, enum ath9k_int ints);
/* MAC (PCU/QCU) */
-void ath9k_hw_dmaRegDump(struct ath_hal *ah);
u32 ath9k_hw_gettxbuf(struct ath_hal *ah, u32 q);
bool ath9k_hw_puttxbuf(struct ath_hal *ah, u32 q, u32 txdp);
bool ath9k_hw_txstart(struct ath_hal *ah, u32 q);
diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c
index 88fbfe5..ca5782f 100644
--- a/drivers/net/wireless/ath9k/beacon.c
+++ b/drivers/net/wireless/ath9k/beacon.c
@@ -492,7 +492,6 @@ void ath9k_beacon_tasklet(unsigned long data)
DPRINTF(sc, ATH_DBG_BEACON,
"beacon is officially "
"stuck\n");
- ath9k_hw_dmaRegDump(ah);
}
} else {
DPRINTF(sc, ATH_DBG_BEACON,
diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index 5b75558..8c11c0f 100644
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -92,6 +92,7 @@ struct ath9k_debug {
int debug_mask;
struct dentry *debugfs_root;
struct dentry *debugfs_phy;
+ struct dentry *debugfs_dma;
};
void DPRINTF(struct ath_softc *sc, int dbg_mask, const char *fmt, ...);
diff --git a/drivers/net/wireless/ath9k/debug.c b/drivers/net/wireless/ath9k/debug.c
index c146e48..da52812 100644
--- a/drivers/net/wireless/ath9k/debug.c
+++ b/drivers/net/wireless/ath9k/debug.c
@@ -15,6 +15,8 @@
*/
#include "core.h"
+#include "reg.h"
+#include "hw.h"
static unsigned int ath9k_debug = DBG_DEFAULT;
module_param_named(debug, ath9k_debug, uint, 0);
@@ -34,6 +36,98 @@ void DPRINTF(struct ath_softc *sc, int dbg_mask, const char *fmt, ...)
}
}
+static int ath9k_debugfs_open(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+static ssize_t read_file_dma(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_hal *ah = sc->sc_ah;
+ char buf[1024];
+ unsigned int len = 0;
+ u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
+ int i, qcuOffset = 0, dcuOffset = 0;
+ u32 *qcuBase = &val[0], *dcuBase = &val[4];
+
+ REG_WRITE(ah, AR_MACMISC,
+ ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
+ (AR_MACMISC_MISC_OBS_BUS_1 <<
+ AR_MACMISC_MISC_OBS_BUS_MSB_S)));
+
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "Raw DMA Debug values:\n");
+
+ for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
+ if (i % 4 == 0)
+ len += snprintf(buf + len, sizeof(buf) - len, "\n");
+
+ val[i] = REG_READ(ah, AR_DMADBG_0 + (i * sizeof(u32)));
+ len += snprintf(buf + len, sizeof(buf) - len, "%d: %08x ",
+ i, val[i]);
+ }
+
+ len += snprintf(buf + len, sizeof(buf) - len, "\n\n");
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
+
+ for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
+ if (i == 8) {
+ qcuOffset = 0;
+ qcuBase++;
+ }
+
+ if (i == 6) {
+ dcuOffset = 0;
+ dcuBase++;
+ }
+
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%2d %2x %1x %2x %2x\n",
+ i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
+ (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
+ val[2] & (0x7 << (i * 3)) >> (i * 3),
+ (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
+ }
+
+ len += snprintf(buf + len, sizeof(buf) - len, "\n");
+
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "qcu_stitch state: %2x qcu_fetch state: %2x\n",
+ (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "qcu_complete state: %2x dcu_complete state: %2x\n",
+ (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "dcu_arb state: %2x dcu_fp state: %2x\n",
+ (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n",
+ (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "txfifo_valid_0: %1d txfifo_valid_1: %1d\n",
+ (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n",
+ (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
+
+ len += snprintf(buf + len, sizeof(buf) - len, "pcu observe: 0x%x \n",
+ REG_READ(ah, AR_OBS_BUS_1));
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "AR_CR: 0x%x \n", REG_READ(ah, AR_CR));
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_dma = {
+ .read = read_file_dma,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
+
int ath9k_init_debug(struct ath_softc *sc)
{
sc->sc_debug.debug_mask = ath9k_debug;
@@ -47,6 +141,11 @@ int ath9k_init_debug(struct ath_softc *sc)
if (!sc->sc_debug.debugfs_phy)
goto err;
+ sc->sc_debug.debugfs_dma = debugfs_create_file("dma", S_IRUGO,
+ sc->sc_debug.debugfs_phy, sc, &fops_dma);
+ if (!sc->sc_debug.debugfs_dma)
+ goto err;
+
return 0;
err:
ath9k_exit_debug(sc);
@@ -55,6 +154,7 @@ err:
void ath9k_exit_debug(struct ath_softc *sc)
{
+ debugfs_remove(sc->sc_debug.debugfs_dma);
debugfs_remove(sc->sc_debug.debugfs_phy);
debugfs_remove(sc->sc_debug.debugfs_root);
}
diff --git a/drivers/net/wireless/ath9k/mac.c b/drivers/net/wireless/ath9k/mac.c
index 8d2b139..a4e9898 100644
--- a/drivers/net/wireless/ath9k/mac.c
+++ b/drivers/net/wireless/ath9k/mac.c
@@ -40,78 +40,6 @@ static void ath9k_hw_set_txq_interrupts(struct ath_hal *ah,
AR_IMR_S2_QCU_TXURN, ahp->ah_txUrnInterruptMask);
}
-void ath9k_hw_dmaRegDump(struct ath_hal *ah)
-{
- u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
- int qcuOffset = 0, dcuOffset = 0;
- u32 *qcuBase = &val[0], *dcuBase = &val[4];
- int i;
-
- REG_WRITE(ah, AR_MACMISC,
- ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
- (AR_MACMISC_MISC_OBS_BUS_1 <<
- AR_MACMISC_MISC_OBS_BUS_MSB_S)));
-
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO, "Raw DMA Debug values:\n");
-
- for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
- if (i % 4 == 0)
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO, "\n");
-
- val[i] = REG_READ(ah, AR_DMADBG_0 + (i * sizeof(u32)));
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO, "%d: %08x ", i, val[i]);
- }
-
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO, "\n\n");
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
-
- for (i = 0; i < ATH9K_NUM_QUEUES;
- i++, qcuOffset += 4, dcuOffset += 5) {
- if (i == 8) {
- qcuOffset = 0;
- qcuBase++;
- }
-
- if (i == 6) {
- dcuOffset = 0;
- dcuBase++;
- }
-
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "%2d %2x %1x %2x %2x\n",
- i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
- (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
- val[2] & (0x7 << (i * 3)) >> (i * 3),
- (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
- }
-
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO, "\n");
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "qcu_stitch state: %2x qcu_fetch state: %2x\n",
- (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "qcu_complete state: %2x dcu_complete state: %2x\n",
- (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "dcu_arb state: %2x dcu_fp state: %2x\n",
- (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n",
- (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "txfifo_valid_0: %1d txfifo_valid_1: %1d\n",
- (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n",
- (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
-
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO, "pcu observe 0x%x \n",
- REG_READ(ah, AR_OBS_BUS_1));
- DPRINTF(ah->ah_sc, ATH_DBG_REG_IO,
- "AR_CR 0x%x \n", REG_READ(ah, AR_CR));
-}
-
u32 ath9k_hw_gettxbuf(struct ath_hal *ah, u32 q)
{
return REG_READ(ah, AR_QTXDP(q));
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index aca7848..c590e9d 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -17,6 +17,7 @@
#include <linux/nl80211.h>
#include "core.h"
#include "reg.h"
+#include "hw.h"
#define ATH_PCI_VERSION "0.1"
--
1.6.0.3
--
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