cxgb4: collect firmware mbox and device log dump

Collect firmware mbox and device logs before collecting the rest of
the hardware dumps to snap the firmware state before the mailbox logs
are updated by other hardware dumps.
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h

@@ -26,4 +26,10 @@ struct card_mem {
 	u16 size_edc1;
 	u16 mem_flag;
 };
+
+struct cudbg_mbox_log {
+	struct mbox_cmd entry;
+	u32 hi[MBOX_LEN / 8];
+	u32 lo[MBOX_LEN / 8];
+};
 #endif /* __CUDBG_ENTITY_H__ */

drivers/net/ethernet/chelsio/cxgb4/cudbg_if.h

@@ -28,8 +28,10 @@
 
 enum cudbg_dbg_entity_type {
 	CUDBG_REG_DUMP = 1,
+	CUDBG_DEV_LOG = 2,
 	CUDBG_EDC0 = 18,
 	CUDBG_EDC1 = 19,
+	CUDBG_MBOX_LOG = 66,
 	CUDBG_MAX_ENTITY = 70,
 };
 

drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c

@@ -90,6 +90,45 @@ int cudbg_collect_reg_dump(struct cudbg_init *pdbg_init,
 	return rc;
 }
 
+int cudbg_collect_fw_devlog(struct cudbg_init *pdbg_init,
+			    struct cudbg_buffer *dbg_buff,
+			    struct cudbg_error *cudbg_err)
+{
+	struct adapter *padap = pdbg_init->adap;
+	struct cudbg_buffer temp_buff = { 0 };
+	struct devlog_params *dparams;
+	int rc = 0;
+
+	rc = t4_init_devlog_params(padap);
+	if (rc < 0) {
+		cudbg_err->sys_err = rc;
+		return rc;
+	}
+
+	dparams = &padap->params.devlog;
+	rc = cudbg_get_buff(dbg_buff, dparams->size, &temp_buff);
+	if (rc)
+		return rc;
+
+	/* Collect FW devlog */
+	if (dparams->start != 0) {
+		spin_lock(&padap->win0_lock);
+		rc = t4_memory_rw(padap, padap->params.drv_memwin,
+				  dparams->memtype, dparams->start,
+				  dparams->size,
+				  (__be32 *)(char *)temp_buff.data,
+				  1);
+		spin_unlock(&padap->win0_lock);
+		if (rc) {
+			cudbg_err->sys_err = rc;
+			cudbg_put_buff(&temp_buff, dbg_buff);
+			return rc;
+		}
+	}
+	cudbg_write_and_release_buff(&temp_buff, dbg_buff);
+	return rc;
+}
+
 static int cudbg_read_fw_mem(struct cudbg_init *pdbg_init,
 			     struct cudbg_buffer *dbg_buff, u8 mem_type,
 			     unsigned long tot_len,
@@ -213,3 +252,48 @@ int cudbg_collect_edc1_meminfo(struct cudbg_init *pdbg_init,
 	return cudbg_collect_mem_region(pdbg_init, dbg_buff, cudbg_err,
 					MEM_EDC1);
 }
+
+int cudbg_collect_mbox_log(struct cudbg_init *pdbg_init,
+			   struct cudbg_buffer *dbg_buff,
+			   struct cudbg_error *cudbg_err)
+{
+	struct adapter *padap = pdbg_init->adap;
+	struct cudbg_mbox_log *mboxlog = NULL;
+	struct cudbg_buffer temp_buff = { 0 };
+	struct mbox_cmd_log *log = NULL;
+	struct mbox_cmd *entry;
+	unsigned int entry_idx;
+	u16 mbox_cmds;
+	int i, k, rc;
+	u64 flit;
+	u32 size;
+
+	log = padap->mbox_log;
+	mbox_cmds = padap->mbox_log->size;
+	size = sizeof(struct cudbg_mbox_log) * mbox_cmds;
+	rc = cudbg_get_buff(dbg_buff, size, &temp_buff);
+	if (rc)
+		return rc;
+
+	mboxlog = (struct cudbg_mbox_log *)temp_buff.data;
+	for (k = 0; k < mbox_cmds; k++) {
+		entry_idx = log->cursor + k;
+		if (entry_idx >= log->size)
+			entry_idx -= log->size;
+
+		entry = mbox_cmd_log_entry(log, entry_idx);
+		/* skip over unused entries */
+		if (entry->timestamp == 0)
+			continue;
+
+		memcpy(&mboxlog->entry, entry, sizeof(struct mbox_cmd));
+		for (i = 0; i < MBOX_LEN / 8; i++) {
+			flit = entry->cmd[i];
+			mboxlog->hi[i] = (u32)(flit >> 32);
+			mboxlog->lo[i] = (u32)flit;
+		}
+		mboxlog++;
+	}
+	cudbg_write_and_release_buff(&temp_buff, dbg_buff);
+	return rc;
+}

drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.h

@@ -21,12 +21,18 @@
 int cudbg_collect_reg_dump(struct cudbg_init *pdbg_init,
 			   struct cudbg_buffer *dbg_buff,
 			   struct cudbg_error *cudbg_err);
+int cudbg_collect_fw_devlog(struct cudbg_init *pdbg_init,
+			    struct cudbg_buffer *dbg_buff,
+			    struct cudbg_error *cudbg_err);
 int cudbg_collect_edc0_meminfo(struct cudbg_init *pdbg_init,
 			       struct cudbg_buffer *dbg_buff,
 			       struct cudbg_error *cudbg_err);
 int cudbg_collect_edc1_meminfo(struct cudbg_init *pdbg_init,
 			       struct cudbg_buffer *dbg_buff,
 			       struct cudbg_error *cudbg_err);
+int cudbg_collect_mbox_log(struct cudbg_init *pdbg_init,
+			   struct cudbg_buffer *dbg_buff,
+			   struct cudbg_error *cudbg_err);
 
 struct cudbg_entity_hdr *cudbg_get_entity_hdr(void *outbuf, int i);
 void cudbg_align_debug_buffer(struct cudbg_buffer *dbg_buff,

drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c

@@ -18,6 +18,7 @@
 #include "t4_regs.h"
 #include "cxgb4.h"
 #include "cxgb4_cudbg.h"
+#include "cudbg_entity.h"
 
 static const struct cxgb4_collect_entity cxgb4_collect_mem_dump[] = {
 	{ CUDBG_EDC0, cudbg_collect_edc0_meminfo },
@@ -25,6 +26,8 @@ static const struct cxgb4_collect_entity cxgb4_collect_mem_dump[] = {
 };
 
 static const struct cxgb4_collect_entity cxgb4_collect_hw_dump[] = {
+	{ CUDBG_MBOX_LOG, cudbg_collect_mbox_log },
+	{ CUDBG_DEV_LOG, cudbg_collect_fw_devlog },
 	{ CUDBG_REG_DUMP, cudbg_collect_reg_dump },
 };
 
@@ -46,6 +49,9 @@ static u32 cxgb4_get_entity_length(struct adapter *adap, u32 entity)
 			break;
 		}
 		break;
+	case CUDBG_DEV_LOG:
+		len = adap->params.devlog.size;
+		break;
 	case CUDBG_EDC0:
 		value = t4_read_reg(adap, MA_TARGET_MEM_ENABLE_A);
 		if (value & EDRAM0_ENABLE_F) {
@@ -62,6 +68,9 @@ static u32 cxgb4_get_entity_length(struct adapter *adap, u32 entity)
 		}
 		len = cudbg_mbytes_to_bytes(len);
 		break;
+	case CUDBG_MBOX_LOG:
+		len = sizeof(struct cudbg_mbox_log) * adap->mbox_log->size;
+		break;
 	default:
 		break;
 	}