Commit 34dd5feb authored by Zhu Yi's avatar Zhu Yi Committed by John W. Linville

iwmc3200wifi: add ftrace event tracing support

Add event tracer for iwmc3200wifi driver. When enabled, all the
commands and responses between the driver and firmware (also
including Tx/Rx frames) will be recorded in the ftrace ring buffer.
Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 04d1c227
......@@ -17,7 +17,7 @@ config IWM
config IWM_DEBUG
bool "Enable full debugging output in iwmc3200wifi"
depends on IWM && DEBUG_FS
---help---
help
This option will enable debug tracing and setting for iwm
You can set the debug level and module through debugfs. By
......@@ -30,3 +30,10 @@ config IWM_DEBUG
Or, if you want the full debug, for all modules:
echo 0xff > /sys/kernel/debug/iwm/phyN/debug/level
echo 0xff > /sys/kernel/debug/iwm/phyN/debug/modules
config IWM_TRACING
bool "Enable event tracing for iwmc3200wifi"
depends on IWM && EVENT_TRACING
help
Say Y here to trace all the commands and responses between
the driver and firmware (including TX/RX frames) with ftrace.
......@@ -3,3 +3,6 @@ iwmc3200wifi-objs += main.o netdev.o rx.o tx.o sdio.o hal.o fw.o
iwmc3200wifi-objs += commands.o cfg80211.o eeprom.o
iwmc3200wifi-$(CONFIG_IWM_DEBUG) += debugfs.o
iwmc3200wifi-$(CONFIG_IWM_TRACING) += trace.o
CFLAGS_trace.o := -I$(src)
......@@ -104,6 +104,7 @@
#include "hal.h"
#include "umac.h"
#include "debug.h"
#include "trace.h"
static int iwm_nonwifi_cmd_init(struct iwm_priv *iwm,
struct iwm_nonwifi_cmd *cmd,
......@@ -276,6 +277,7 @@ static int iwm_send_udma_nonwifi_cmd(struct iwm_priv *iwm,
udma_cmd->handle_by_hw, cmd->seq_num, udma_cmd->addr,
udma_cmd->op1_sz, udma_cmd->op2);
trace_iwm_tx_nonwifi_cmd(iwm, udma_hdr);
return iwm_bus_send_chunk(iwm, buf->start, buf->len);
}
......@@ -362,6 +364,7 @@ static int iwm_send_udma_wifi_cmd(struct iwm_priv *iwm,
return ret;
}
trace_iwm_tx_wifi_cmd(iwm, umac_hdr);
return iwm_bus_send_chunk(iwm, buf->start, buf->len);
}
......
......@@ -75,7 +75,8 @@ do { \
/* UDMA IN OP CODE -- cmd bits [3:0] */
#define UDMA_IN_OPCODE_MASK 0xF
#define UDMA_HDI_IN_NW_CMD_OPCODE_POS 0
#define UDMA_HDI_IN_NW_CMD_OPCODE_SEED 0xF
#define UDMA_IN_OPCODE_GENERAL_RESP 0x0
#define UDMA_IN_OPCODE_READ_RESP 0x1
......
......@@ -48,6 +48,7 @@
#include "umac.h"
#include "lmac.h"
#include "eeprom.h"
#include "trace.h"
#define IWM_COPYRIGHT "Copyright(c) 2009 Intel Corporation"
#define IWM_AUTHOR "<ilw@linux.intel.com>"
......
......@@ -1235,18 +1235,24 @@ static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
u8 source, cmd_id;
u16 seq_num;
u32 count;
u8 resp;
wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
if (source >= IWM_SRC_NUM) {
IWM_CRIT(iwm, "invalid source %d\n", source);
return -EINVAL;
}
count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
if (cmd_id == REPLY_RX_MPDU_CMD)
trace_iwm_rx_packet(iwm, buf, buf_size);
else if ((cmd_id == UMAC_NOTIFY_OPCODE_RX_TICKET) &&
(source == UMAC_HDI_IN_SOURCE_FW))
trace_iwm_rx_ticket(iwm, buf, buf_size);
else
trace_iwm_rx_wifi_cmd(iwm, wifi_hdr);
count = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT);
count += sizeof(struct iwm_umac_wifi_in_hdr) -
sizeof(struct iwm_dev_cmd_hdr);
if (count > buf_size) {
......@@ -1254,8 +1260,6 @@ static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
return -EINVAL;
}
resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
......@@ -1330,6 +1334,7 @@ static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
struct iwm_nonwifi_cmd *cmd;
trace_iwm_rx_nonwifi_cmd(iwm, buf, buf_size);
seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
/*
......
#include "iwm.h"
#define CREATE_TRACE_POINTS
#include "trace.h"
#if !defined(__IWM_TRACE_H__) || defined(TRACE_HEADER_MULTI_READ)
#define __IWM_TRACE_H__
#include <linux/tracepoint.h>
#if !defined(CONFIG_IWM_TRACING)
#undef TRACE_EVENT
#define TRACE_EVENT(name, proto, ...) \
static inline void trace_ ## name(proto) {}
#endif
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwm
#define IWM_ENTRY __array(char, ndev_name, 16)
#define IWM_ASSIGN strlcpy(__entry->ndev_name, iwm_to_ndev(iwm)->name, 16)
#define IWM_PR_FMT "%s"
#define IWM_PR_ARG __entry->ndev_name
TRACE_EVENT(iwm_tx_nonwifi_cmd,
TP_PROTO(struct iwm_priv *iwm, struct iwm_udma_out_nonwifi_hdr *hdr),
TP_ARGS(iwm, hdr),
TP_STRUCT__entry(
IWM_ENTRY
__field(u8, opcode)
__field(u8, resp)
__field(u8, eot)
__field(u8, hw)
__field(u16, seq)
__field(u32, addr)
__field(u32, op1)
__field(u32, op2)
),
TP_fast_assign(
IWM_ASSIGN;
__entry->opcode = GET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_OPCODE);
__entry->resp = GET_VAL32(hdr->cmd, UDMA_HDI_OUT_NW_CMD_RESP);
__entry->eot = GET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_EOT);
__entry->hw = GET_VAL32(hdr->cmd, UDMA_HDI_OUT_NW_CMD_HANDLE_BY_HW);
__entry->seq = GET_VAL32(hdr->cmd, UDMA_HDI_OUT_CMD_NON_WIFI_HW_SEQ_NUM);
__entry->addr = le32_to_cpu(hdr->addr);
__entry->op1 = le32_to_cpu(hdr->op1_sz);
__entry->op2 = le32_to_cpu(hdr->op2);
),
TP_printk(
IWM_PR_FMT " Tx TARGET CMD: opcode 0x%x, resp %d, eot %d, "
"hw %d, seq 0x%x, addr 0x%x, op1 0x%x, op2 0x%x",
IWM_PR_ARG, __entry->opcode, __entry->resp, __entry->eot,
__entry->hw, __entry->seq, __entry->addr, __entry->op1,
__entry->op2
)
);
TRACE_EVENT(iwm_tx_wifi_cmd,
TP_PROTO(struct iwm_priv *iwm, struct iwm_umac_wifi_out_hdr *hdr),
TP_ARGS(iwm, hdr),
TP_STRUCT__entry(
IWM_ENTRY
__field(u8, opcode)
__field(u8, lmac)
__field(u8, resp)
__field(u8, eot)
__field(u8, ra_tid)
__field(u8, credit_group)
__field(u8, color)
__field(u16, seq)
),
TP_fast_assign(
IWM_ASSIGN;
__entry->opcode = hdr->sw_hdr.cmd.cmd;
__entry->lmac = 0;
__entry->seq = hdr->sw_hdr.cmd.seq_num;
__entry->resp = GET_VAL8(hdr->sw_hdr.cmd.flags, UMAC_DEV_CMD_FLAGS_RESP_REQ);
__entry->color = GET_VAL32(hdr->sw_hdr.meta_data, UMAC_FW_CMD_TX_STA_COLOR);
__entry->eot = GET_VAL32(hdr->hw_hdr.cmd, UMAC_HDI_OUT_CMD_EOT);
__entry->ra_tid = GET_VAL32(hdr->hw_hdr.meta_data, UMAC_HDI_OUT_RATID);
__entry->credit_group = GET_VAL32(hdr->hw_hdr.meta_data, UMAC_HDI_OUT_CREDIT_GRP);
if (__entry->opcode == UMAC_CMD_OPCODE_WIFI_PASS_THROUGH ||
__entry->opcode == UMAC_CMD_OPCODE_WIFI_IF_WRAPPER) {
__entry->lmac = 1;
__entry->opcode = ((struct iwm_lmac_hdr *)(hdr + 1))->id;
}
),
TP_printk(
IWM_PR_FMT " Tx %cMAC CMD: opcode 0x%x, resp %d, eot %d, "
"seq 0x%x, sta_color 0x%x, ra_tid 0x%x, credit_group 0x%x",
IWM_PR_ARG, __entry->lmac ? 'L' : 'U', __entry->opcode,
__entry->resp, __entry->eot, __entry->seq, __entry->color,
__entry->ra_tid, __entry->credit_group
)
);
TRACE_EVENT(iwm_tx_packets,
TP_PROTO(struct iwm_priv *iwm, u8 *buf, int len),
TP_ARGS(iwm, buf, len),
TP_STRUCT__entry(
IWM_ENTRY
__field(u8, eot)
__field(u8, ra_tid)
__field(u8, credit_group)
__field(u8, color)
__field(u16, seq)
__field(u8, npkt)
__field(u32, bytes)
),
TP_fast_assign(
struct iwm_umac_wifi_out_hdr *hdr =
(struct iwm_umac_wifi_out_hdr *)buf;
IWM_ASSIGN;
__entry->eot = GET_VAL32(hdr->hw_hdr.cmd, UMAC_HDI_OUT_CMD_EOT);
__entry->ra_tid = GET_VAL32(hdr->hw_hdr.meta_data, UMAC_HDI_OUT_RATID);
__entry->credit_group = GET_VAL32(hdr->hw_hdr.meta_data, UMAC_HDI_OUT_CREDIT_GRP);
__entry->color = GET_VAL32(hdr->sw_hdr.meta_data, UMAC_FW_CMD_TX_STA_COLOR);
__entry->seq = hdr->sw_hdr.cmd.seq_num;
__entry->npkt = 1;
__entry->bytes = len;
if (!__entry->eot) {
int count;
u8 *ptr = buf;
__entry->npkt = 0;
while (ptr < buf + len) {
count = GET_VAL32(hdr->sw_hdr.meta_data,
UMAC_FW_CMD_BYTE_COUNT);
ptr += ALIGN(sizeof(*hdr) + count, 16);
hdr = (struct iwm_umac_wifi_out_hdr *)ptr;
__entry->npkt++;
}
}
),
TP_printk(
IWM_PR_FMT " Tx %spacket: eot %d, seq 0x%x, sta_color 0x%x, "
"ra_tid 0x%x, credit_group 0x%x, embeded_packets %d, %d bytes",
IWM_PR_ARG, !__entry->eot ? "concatenated " : "",
__entry->eot, __entry->seq, __entry->color, __entry->ra_tid,
__entry->credit_group, __entry->npkt, __entry->bytes
)
);
TRACE_EVENT(iwm_rx_nonwifi_cmd,
TP_PROTO(struct iwm_priv *iwm, void *buf, int len),
TP_ARGS(iwm, buf, len),
TP_STRUCT__entry(
IWM_ENTRY
__field(u8, opcode)
__field(u16, seq)
__field(u32, len)
),
TP_fast_assign(
struct iwm_udma_in_hdr *hdr = buf;
IWM_ASSIGN;
__entry->opcode = GET_VAL32(hdr->cmd, UDMA_HDI_IN_NW_CMD_OPCODE);
__entry->seq = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
__entry->len = len;
),
TP_printk(
IWM_PR_FMT " Rx TARGET RESP: opcode 0x%x, seq 0x%x, len 0x%x",
IWM_PR_ARG, __entry->opcode, __entry->seq, __entry->len
)
);
TRACE_EVENT(iwm_rx_wifi_cmd,
TP_PROTO(struct iwm_priv *iwm, struct iwm_umac_wifi_in_hdr *hdr),
TP_ARGS(iwm, hdr),
TP_STRUCT__entry(
IWM_ENTRY
__field(u8, cmd)
__field(u8, source)
__field(u16, seq)
__field(u32, count)
),
TP_fast_assign(
IWM_ASSIGN;
__entry->cmd = hdr->sw_hdr.cmd.cmd;
__entry->source = GET_VAL32(hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
__entry->count = GET_VAL32(hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT);
__entry->seq = le16_to_cpu(hdr->sw_hdr.cmd.seq_num);
),
TP_printk(
IWM_PR_FMT " Rx %s RESP: cmd 0x%x, seq 0x%x, count 0x%x",
IWM_PR_ARG, __entry->source == UMAC_HDI_IN_SOURCE_FHRX ? "LMAC" :
__entry->source == UMAC_HDI_IN_SOURCE_FW ? "UMAC" : "UDMA",
__entry->cmd, __entry->seq, __entry->count
)
);
#define iwm_ticket_action_symbol \
{ IWM_RX_TICKET_DROP, "DROP" }, \
{ IWM_RX_TICKET_RELEASE, "RELEASE" }, \
{ IWM_RX_TICKET_SNIFFER, "SNIFFER" }, \
{ IWM_RX_TICKET_ENQUEUE, "ENQUEUE" }
TRACE_EVENT(iwm_rx_ticket,
TP_PROTO(struct iwm_priv *iwm, void *buf, int len),
TP_ARGS(iwm, buf, len),
TP_STRUCT__entry(
IWM_ENTRY
__field(u8, action)
__field(u8, reason)
__field(u16, id)
__field(u16, flags)
),
TP_fast_assign(
struct iwm_rx_ticket *ticket =
((struct iwm_umac_notif_rx_ticket *)buf)->tickets;
IWM_ASSIGN;
__entry->id = le16_to_cpu(ticket->id);
__entry->action = le16_to_cpu(ticket->action);
__entry->flags = le16_to_cpu(ticket->flags);
__entry->reason = (__entry->flags & IWM_RX_TICKET_DROP_REASON_MSK) >> IWM_RX_TICKET_DROP_REASON_POS;
),
TP_printk(
IWM_PR_FMT " Rx ticket: id 0x%x, action %s, %s 0x%x%s",
IWM_PR_ARG, __entry->id,
__print_symbolic(__entry->action, iwm_ticket_action_symbol),
__entry->reason ? "reason" : "flags",
__entry->reason ? __entry->reason : __entry->flags,
__entry->flags & IWM_RX_TICKET_AMSDU_MSK ? ", AMSDU frame" : ""
)
);
TRACE_EVENT(iwm_rx_packet,
TP_PROTO(struct iwm_priv *iwm, void *buf, int len),
TP_ARGS(iwm, buf, len),
TP_STRUCT__entry(
IWM_ENTRY
__field(u8, source)
__field(u16, id)
__field(u32, len)
),
TP_fast_assign(
struct iwm_umac_wifi_in_hdr *hdr = buf;
IWM_ASSIGN;
__entry->source = GET_VAL32(hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
__entry->id = le16_to_cpu(hdr->sw_hdr.cmd.seq_num);
__entry->len = len - sizeof(*hdr);
),
TP_printk(
IWM_PR_FMT " Rx %s packet: id 0x%x, %d bytes",
IWM_PR_ARG, __entry->source == UMAC_HDI_IN_SOURCE_FHRX ?
"LMAC" : "UMAC", __entry->id, __entry->len
)
);
#endif
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>
......@@ -346,6 +346,7 @@ static int iwm_tx_send_concat_packets(struct iwm_priv *iwm,
/* mark EOP for the last packet */
iwm_udma_wifi_hdr_set_eop(iwm, txq->concat_ptr, 1);
trace_iwm_tx_packets(iwm, txq->concat_buf, txq->concat_count);
ret = iwm_bus_send_chunk(iwm, txq->concat_buf, txq->concat_count);
txq->concat_count = 0;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment