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: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwmc3200wifi/trace.h b/drivers/net/wireless/iwmc3200wifi/trace.h
new file mode 100644
index 0000000..320e54f
--- /dev/null
+++ b/drivers/net/wireless/iwmc3200wifi/trace.h
@@ -0,0 +1,283 @@
+#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>