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bnxt_en: Manage the FW trace context memory 

The FW trace memory pages will be added to the ethtool -w coredump
in later patches.  In addition to the raw data, the driver has to
add a header to provide the head and tail information on each FW
trace log segment when creating the coredump.  The FW sends an async
message to the driver after DMAing a chunk of logs to the context
memory to indicate the last offset containing the tail of the logs.
The driver needs to keep track of that.

Reviewed-by: Hongguang Gao <hongguang.gao@broadcom.com>
Signed-off-by: Shruti Parab <shruti.parab@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20241115151438.550106-7-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
pull/1083/head
Shruti Parab 2024-11-15 07:14:32 -08:00 committed by Jakub Kicinski
parent 24d694aec1
commit 84fcd9449f
2 changed files with 89 additions and 0 deletions
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67
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -245,6 +245,21 @@ static const u16 bnxt_async_events_arr[] = {
ASYNC_EVENT_CMPL_EVENT_ID_PPS_TIMESTAMP,
ASYNC_EVENT_CMPL_EVENT_ID_ERROR_REPORT,
ASYNC_EVENT_CMPL_EVENT_ID_PHC_UPDATE,
ASYNC_EVENT_CMPL_EVENT_ID_DBG_BUF_PRODUCER,
};
const u16 bnxt_bstore_to_trace[] = {
[BNXT_CTX_SRT] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_SRT_TRACE,
[BNXT_CTX_SRT2] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_SRT2_TRACE,
[BNXT_CTX_CRT] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_CRT_TRACE,
[BNXT_CTX_CRT2] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_CRT2_TRACE,
[BNXT_CTX_RIGP0] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_RIGP0_TRACE,
[BNXT_CTX_L2HWRM] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_L2_HWRM_TRACE,
[BNXT_CTX_REHWRM] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_ROCE_HWRM_TRACE,
[BNXT_CTX_CA0] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_CA0_TRACE,
[BNXT_CTX_CA1] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_CA1_TRACE,
[BNXT_CTX_CA2] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_CA2_TRACE,
[BNXT_CTX_RIGP1] = DBG_LOG_BUFFER_FLUSH_REQ_TYPE_RIGP1_TRACE,
};
static struct workqueue_struct *bnxt_pf_wq;
@ -2470,6 +2485,50 @@ bool bnxt_bs_trace_avail(struct bnxt *bp, u16 type)
(flags & BNXT_CTX_MEM_FW_BIN_TRACE));
}
static void bnxt_bs_trace_init(struct bnxt *bp, struct bnxt_ctx_mem_type *ctxm)
{
u32 mem_size, pages, rem_bytes, magic_byte_offset;
u16 trace_type = bnxt_bstore_to_trace[ctxm->type];
struct bnxt_ctx_pg_info *ctx_pg = ctxm->pg_info;
struct bnxt_ring_mem_info *rmem, *rmem_pg_tbl;
struct bnxt_bs_trace_info *bs_trace;
int last_pg;
if (ctxm->instance_bmap && ctxm->instance_bmap > 1)
return;
mem_size = ctxm->max_entries * ctxm->entry_size;
rem_bytes = mem_size % BNXT_PAGE_SIZE;
pages = DIV_ROUND_UP(mem_size, BNXT_PAGE_SIZE);
last_pg = (pages - 1) & (MAX_CTX_PAGES - 1);
magic_byte_offset = (rem_bytes ? rem_bytes : BNXT_PAGE_SIZE) - 1;
rmem = &ctx_pg[0].ring_mem;
bs_trace = &bp->bs_trace[trace_type];
bs_trace->ctx_type = ctxm->type;
bs_trace->trace_type = trace_type;
if (pages > MAX_CTX_PAGES) {
int last_pg_dir = rmem->nr_pages - 1;
rmem_pg_tbl = &ctx_pg[0].ctx_pg_tbl[last_pg_dir]->ring_mem;
bs_trace->magic_byte = rmem_pg_tbl->pg_arr[last_pg];
} else {
bs_trace->magic_byte = rmem->pg_arr[last_pg];
}
bs_trace->magic_byte += magic_byte_offset;
*bs_trace->magic_byte = BNXT_TRACE_BUF_MAGIC_BYTE;
}
#define BNXT_EVENT_BUF_PRODUCER_TYPE(data1) \
(((data1) & ASYNC_EVENT_CMPL_DBG_BUF_PRODUCER_EVENT_DATA1_TYPE_MASK) >>\
ASYNC_EVENT_CMPL_DBG_BUF_PRODUCER_EVENT_DATA1_TYPE_SFT)
#define BNXT_EVENT_BUF_PRODUCER_OFFSET(data2) \
(((data2) & \
ASYNC_EVENT_CMPL_DBG_BUF_PRODUCER_EVENT_DATA2_CURR_OFF_MASK) >>\
ASYNC_EVENT_CMPL_DBG_BUF_PRODUCER_EVENT_DATA2_CURR_OFF_SFT)
#define BNXT_EVENT_THERMAL_CURRENT_TEMP(data2) \
((data2) & \
ASYNC_EVENT_CMPL_ERROR_REPORT_THERMAL_EVENT_DATA2_CURRENT_TEMP_MASK)
@ -2786,6 +2845,13 @@ static int bnxt_async_event_process(struct bnxt *bp,
hwrm_update_token(bp, seq_id, BNXT_HWRM_DEFERRED);
goto async_event_process_exit;
}
case ASYNC_EVENT_CMPL_EVENT_ID_DBG_BUF_PRODUCER: {
u16 type = (u16)BNXT_EVENT_BUF_PRODUCER_TYPE(data1);
u32 offset = BNXT_EVENT_BUF_PRODUCER_OFFSET(data2);
bnxt_bs_trace_check_wrap(&bp->bs_trace[type], offset);
goto async_event_process_exit;
}
default:
goto async_event_process_exit;
}
@ -8769,6 +8835,7 @@ static int bnxt_backing_store_cfg_v2(struct bnxt *bp, u32 ena)
type);
continue;
}
bnxt_bs_trace_init(bp, ctxm);
last_type = type;
}
}

22
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -2112,6 +2112,26 @@ enum board_idx {
NETXTREME_E_P7_VF,
};
#define BNXT_TRACE_BUF_MAGIC_BYTE ((u8)0xbc)
#define BNXT_TRACE_MAX 11
struct bnxt_bs_trace_info {
u8 *magic_byte;
u32 last_offset;
u8 wrapped:1;
u16 ctx_type;
u16 trace_type;
};
static inline void bnxt_bs_trace_check_wrap(struct bnxt_bs_trace_info *bs_trace,
u32 offset)
{
if (!bs_trace->wrapped &&
*bs_trace->magic_byte != BNXT_TRACE_BUF_MAGIC_BYTE)
bs_trace->wrapped = 1;
bs_trace->last_offset = offset;
}
struct bnxt {
void __iomem *bar0;
void __iomem *bar1;
@ -2668,6 +2688,7 @@ struct bnxt {
struct bnxt_ctx_pg_info *fw_crash_mem;
u32 fw_crash_len;
struct bnxt_bs_trace_info bs_trace[BNXT_TRACE_MAX];
};
#define BNXT_NUM_RX_RING_STATS 8
@ -2803,6 +2824,7 @@ static inline bool bnxt_sriov_cfg(struct bnxt *bp)
#endif
}
extern const u16 bnxt_bstore_to_trace[];
extern const u16 bnxt_lhint_arr[];
int bnxt_alloc_rx_data(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,