diff options
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c | 268 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h | 71 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/eq.c | 11 | ||||
| -rw-r--r-- | include/linux/mlx5/device.h | 7 |
4 files changed, 347 insertions, 10 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c index d6cc27b0ff34..bd887d1d3396 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c @@ -318,25 +318,244 @@ out: return; } -static void mlx5_fw_tracer_ownership_change(struct work_struct *work) +static void mlx5_fw_tracer_arm(struct mlx5_core_dev *dev) { - struct mlx5_fw_tracer *tracer = container_of(work, struct mlx5_fw_tracer, - ownership_change_work); - struct mlx5_core_dev *dev = tracer->dev; + u32 out[MLX5_ST_SZ_DW(mtrc_ctrl)] = {0}; + u32 in[MLX5_ST_SZ_DW(mtrc_ctrl)] = {0}; int err; - if (tracer->owner) { - mlx5_fw_tracer_ownership_release(tracer); + MLX5_SET(mtrc_ctrl, in, arm_event, 1); + + err = mlx5_core_access_reg(dev, in, sizeof(in), out, sizeof(out), + MLX5_REG_MTRC_CTRL, 0, 1); + if (err) + mlx5_core_warn(dev, "FWTracer: Failed to arm tracer event %d\n", err); +} + +static void poll_trace(struct mlx5_fw_tracer *tracer, + struct tracer_event *tracer_event, u64 *trace) +{ + u32 timestamp_low, timestamp_mid, timestamp_high, urts; + + tracer_event->event_id = MLX5_GET(tracer_event, trace, event_id); + tracer_event->lost_event = MLX5_GET(tracer_event, trace, lost); + + switch (tracer_event->event_id) { + case TRACER_EVENT_TYPE_TIMESTAMP: + tracer_event->type = TRACER_EVENT_TYPE_TIMESTAMP; + urts = MLX5_GET(tracer_timestamp_event, trace, urts); + if (tracer->trc_ver == 0) + tracer_event->timestamp_event.unreliable = !!(urts >> 2); + else + tracer_event->timestamp_event.unreliable = !!(urts & 1); + + timestamp_low = MLX5_GET(tracer_timestamp_event, + trace, timestamp7_0); + timestamp_mid = MLX5_GET(tracer_timestamp_event, + trace, timestamp39_8); + timestamp_high = MLX5_GET(tracer_timestamp_event, + trace, timestamp52_40); + + tracer_event->timestamp_event.timestamp = + ((u64)timestamp_high << 40) | + ((u64)timestamp_mid << 8) | + (u64)timestamp_low; + break; + default: + if (tracer_event->event_id >= tracer->str_db.first_string_trace || + tracer_event->event_id <= tracer->str_db.first_string_trace + + tracer->str_db.num_string_trace) { + tracer_event->type = TRACER_EVENT_TYPE_STRING; + tracer_event->string_event.timestamp = + MLX5_GET(tracer_string_event, trace, timestamp); + tracer_event->string_event.string_param = + MLX5_GET(tracer_string_event, trace, string_param); + tracer_event->string_event.tmsn = + MLX5_GET(tracer_string_event, trace, tmsn); + tracer_event->string_event.tdsn = + MLX5_GET(tracer_string_event, trace, tdsn); + } else { + tracer_event->type = TRACER_EVENT_TYPE_UNRECOGNIZED; + } + break; + } +} + +static u64 get_block_timestamp(struct mlx5_fw_tracer *tracer, u64 *ts_event) +{ + struct tracer_event tracer_event; + u8 event_id; + + event_id = MLX5_GET(tracer_event, ts_event, event_id); + + if (event_id == TRACER_EVENT_TYPE_TIMESTAMP) + poll_trace(tracer, &tracer_event, ts_event); + else + tracer_event.timestamp_event.timestamp = 0; + + return tracer_event.timestamp_event.timestamp; +} + +static void mlx5_fw_tracer_handle_traces(struct work_struct *work) +{ + struct mlx5_fw_tracer *tracer = + container_of(work, struct mlx5_fw_tracer, handle_traces_work); + u64 block_timestamp, last_block_timestamp, tmp_trace_block[TRACES_PER_BLOCK]; + u32 block_count, start_offset, prev_start_offset, prev_consumer_index; + u32 trace_event_size = MLX5_ST_SZ_BYTES(tracer_event); + struct tracer_event tracer_event; + struct mlx5_core_dev *dev; + int i; + + if (!tracer->owner) return; + + dev = tracer->dev; + block_count = tracer->buff.size / TRACER_BLOCK_SIZE_BYTE; + start_offset = tracer->buff.consumer_index * TRACER_BLOCK_SIZE_BYTE; + + /* Copy the block to local buffer to avoid HW override while being processed*/ + memcpy(tmp_trace_block, tracer->buff.log_buf + start_offset, + TRACER_BLOCK_SIZE_BYTE); + + block_timestamp = + get_block_timestamp(tracer, &tmp_trace_block[TRACES_PER_BLOCK - 1]); + + while (block_timestamp > tracer->last_timestamp) { + /* Check block override if its not the first block */ + if (!tracer->last_timestamp) { + u64 *ts_event; + /* To avoid block override be the HW in case of buffer + * wraparound, the time stamp of the previous block + * should be compared to the last timestamp handled + * by the driver. + */ + prev_consumer_index = + (tracer->buff.consumer_index - 1) & (block_count - 1); + prev_start_offset = prev_consumer_index * TRACER_BLOCK_SIZE_BYTE; + + ts_event = tracer->buff.log_buf + prev_start_offset + + (TRACES_PER_BLOCK - 1) * trace_event_size; + last_block_timestamp = get_block_timestamp(tracer, ts_event); + /* If previous timestamp different from last stored + * timestamp then there is a good chance that the + * current buffer is overwritten and therefore should + * not be parsed. + */ + if (tracer->last_timestamp != last_block_timestamp) { + mlx5_core_warn(dev, "FWTracer: Events were lost\n"); + tracer->last_timestamp = block_timestamp; + tracer->buff.consumer_index = + (tracer->buff.consumer_index + 1) & (block_count - 1); + break; + } + } + + /* Parse events */ + for (i = 0; i < TRACES_PER_BLOCK ; i++) + poll_trace(tracer, &tracer_event, &tmp_trace_block[i]); + + tracer->buff.consumer_index = + (tracer->buff.consumer_index + 1) & (block_count - 1); + + tracer->last_timestamp = block_timestamp; + start_offset = tracer->buff.consumer_index * TRACER_BLOCK_SIZE_BYTE; + memcpy(tmp_trace_block, tracer->buff.log_buf + start_offset, + TRACER_BLOCK_SIZE_BYTE); + block_timestamp = get_block_timestamp(tracer, + &tmp_trace_block[TRACES_PER_BLOCK - 1]); } + mlx5_fw_tracer_arm(dev); +} + +static int mlx5_fw_tracer_set_mtrc_conf(struct mlx5_fw_tracer *tracer) +{ + struct mlx5_core_dev *dev = tracer->dev; + u32 out[MLX5_ST_SZ_DW(mtrc_conf)] = {0}; + u32 in[MLX5_ST_SZ_DW(mtrc_conf)] = {0}; + int err; + + MLX5_SET(mtrc_conf, in, trace_mode, TRACE_TO_MEMORY); + MLX5_SET(mtrc_conf, in, log_trace_buffer_size, + ilog2(TRACER_BUFFER_PAGE_NUM)); + MLX5_SET(mtrc_conf, in, trace_mkey, tracer->buff.mkey.key); + + err = mlx5_core_access_reg(dev, in, sizeof(in), out, sizeof(out), + MLX5_REG_MTRC_CONF, 0, 1); + if (err) + mlx5_core_warn(dev, "FWTracer: Failed to set tracer configurations %d\n", err); + + return err; +} + +static int mlx5_fw_tracer_set_mtrc_ctrl(struct mlx5_fw_tracer *tracer, u8 status, u8 arm) +{ + struct mlx5_core_dev *dev = tracer->dev; + u32 out[MLX5_ST_SZ_DW(mtrc_ctrl)] = {0}; + u32 in[MLX5_ST_SZ_DW(mtrc_ctrl)] = {0}; + int err; + + MLX5_SET(mtrc_ctrl, in, modify_field_select, TRACE_STATUS); + MLX5_SET(mtrc_ctrl, in, trace_status, status); + MLX5_SET(mtrc_ctrl, in, arm_event, arm); + + err = mlx5_core_access_reg(dev, in, sizeof(in), out, sizeof(out), + MLX5_REG_MTRC_CTRL, 0, 1); + + if (!err && status) + tracer->last_timestamp = 0; + + return err; +} + +static int mlx5_fw_tracer_start(struct mlx5_fw_tracer *tracer) +{ + struct mlx5_core_dev *dev = tracer->dev; + int err; + err = mlx5_fw_tracer_ownership_acquire(tracer); if (err) { mlx5_core_dbg(dev, "FWTracer: Ownership was not granted %d\n", err); + /* Don't fail since ownership can be acquired on a later FW event */ + return 0; + } + + err = mlx5_fw_tracer_set_mtrc_conf(tracer); + if (err) { + mlx5_core_warn(dev, "FWTracer: Failed to set tracer configuration %d\n", err); + goto release_ownership; + } + + /* enable tracer & trace events */ + err = mlx5_fw_tracer_set_mtrc_ctrl(tracer, 1, 1); + if (err) { + mlx5_core_warn(dev, "FWTracer: Failed to enable tracer %d\n", err); + goto release_ownership; + } + + return 0; + +release_ownership: + mlx5_fw_tracer_ownership_release(tracer); + return err; +} + +static void mlx5_fw_tracer_ownership_change(struct work_struct *work) +{ + struct mlx5_fw_tracer *tracer = + container_of(work, struct mlx5_fw_tracer, ownership_change_work); + + if (tracer->owner) { + tracer->owner = false; + tracer->buff.consumer_index = 0; return; } + + mlx5_fw_tracer_start(tracer); } +/* Create software resources (Buffers, etc ..) */ struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev) { struct mlx5_fw_tracer *tracer = NULL; @@ -361,6 +580,8 @@ struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev) INIT_WORK(&tracer->ownership_change_work, mlx5_fw_tracer_ownership_change); INIT_WORK(&tracer->read_fw_strings_work, mlx5_tracer_read_strings_db); + INIT_WORK(&tracer->handle_traces_work, mlx5_fw_tracer_handle_traces); + err = mlx5_query_mtrc_caps(tracer); if (err) { @@ -392,6 +613,9 @@ free_tracer: return ERR_PTR(err); } +/* Create HW resources + start tracer + * must be called before Async EQ is created + */ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer) { struct mlx5_core_dev *dev; @@ -417,22 +641,25 @@ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer) goto err_dealloc_pd; } - err = mlx5_fw_tracer_ownership_acquire(tracer); - if (err) /* Don't fail since ownership can be acquired on a later FW event */ - mlx5_core_dbg(dev, "FWTracer: Ownership was not granted %d\n", err); + mlx5_fw_tracer_start(tracer); return 0; + err_dealloc_pd: mlx5_core_dealloc_pd(dev, tracer->buff.pdn); return err; } +/* Stop tracer + Cleanup HW resources + * must be called after Async EQ is destroyed + */ void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer) { if (IS_ERR_OR_NULL(tracer)) return; cancel_work_sync(&tracer->ownership_change_work); + cancel_work_sync(&tracer->handle_traces_work); if (tracer->owner) mlx5_fw_tracer_ownership_release(tracer); @@ -441,6 +668,7 @@ void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer) mlx5_core_dealloc_pd(tracer->dev, tracer->buff.pdn); } +/* Free software resources (Buffers, etc ..) */ void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer) { if (IS_ERR_OR_NULL(tracer)) @@ -454,4 +682,26 @@ void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer) kfree(tracer); } +void mlx5_fw_tracer_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe) +{ + struct mlx5_fw_tracer *tracer = dev->tracer; + + if (!tracer) + return; + + switch (eqe->sub_type) { + case MLX5_TRACER_SUBTYPE_OWNERSHIP_CHANGE: + if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) + queue_work(tracer->work_queue, &tracer->ownership_change_work); + break; + case MLX5_TRACER_SUBTYPE_TRACES_AVAILABLE: + if (likely(tracer->str_db.loaded)) + queue_work(tracer->work_queue, &tracer->handle_traces_work); + break; + default: + mlx5_core_dbg(dev, "FWTracer: Event with unrecognized subtype: sub_type %d\n", + eqe->sub_type); + } +} + EXPORT_TRACEPOINT_SYMBOL(mlx5_fw); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h index 66cb7e7ada28..3915e91486b2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h @@ -43,6 +43,9 @@ #define TRACER_BUFFER_CHUNK 4096 #define TRACE_BUFFER_SIZE_BYTE (TRACER_BUFFER_PAGE_NUM * TRACER_BUFFER_CHUNK) +#define TRACER_BLOCK_SIZE_BYTE 256 +#define TRACES_PER_BLOCK 32 + struct mlx5_fw_tracer { struct mlx5_core_dev *dev; bool owner; @@ -69,8 +72,11 @@ struct mlx5_fw_tracer { dma_addr_t dma; u32 size; struct mlx5_core_mkey mkey; - + u32 consumer_index; } buff; + + u64 last_timestamp; + struct work_struct handle_traces_work; }; enum mlx5_fw_tracer_ownership_state { @@ -78,7 +84,70 @@ enum mlx5_fw_tracer_ownership_state { MLX5_FW_TRACER_ACQUIRE_OWNERSHIP, }; +enum tracer_ctrl_fields_select { + TRACE_STATUS = 1 << 0, +}; + +enum tracer_event_type { + TRACER_EVENT_TYPE_STRING, + TRACER_EVENT_TYPE_TIMESTAMP = 0xFF, + TRACER_EVENT_TYPE_UNRECOGNIZED, +}; + +enum tracing_mode { + TRACE_TO_MEMORY = 1 << 0, +}; + +struct tracer_timestamp_event { + u64 timestamp; + u8 unreliable; +}; + +struct tracer_string_event { + u32 timestamp; + u32 tmsn; + u32 tdsn; + u32 string_param; +}; + +struct tracer_event { + bool lost_event; + u32 type; + u8 event_id; + union { + struct tracer_string_event string_event; + struct tracer_timestamp_event timestamp_event; + }; +}; + +struct mlx5_ifc_tracer_event_bits { + u8 lost[0x1]; + u8 timestamp[0x7]; + u8 event_id[0x8]; + u8 event_data[0x30]; +}; + +struct mlx5_ifc_tracer_string_event_bits { + u8 lost[0x1]; + u8 timestamp[0x7]; + u8 event_id[0x8]; + u8 tmsn[0xd]; + u8 tdsn[0x3]; + u8 string_param[0x20]; +}; + +struct mlx5_ifc_tracer_timestamp_event_bits { + u8 timestamp7_0[0x8]; + u8 event_id[0x8]; + u8 urts[0x3]; + u8 timestamp52_40[0xd]; + u8 timestamp39_8[0x20]; +}; + struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev); +int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer); +void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer); void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer); +void mlx5_fw_tracer_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe) { return; } #endif diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c index 406c23862f5f..7669b4380779 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c @@ -40,6 +40,7 @@ #include "mlx5_core.h" #include "fpga/core.h" #include "eswitch.h" +#include "diag/fw_tracer.h" enum { MLX5_EQE_SIZE = sizeof(struct mlx5_eqe), @@ -168,6 +169,8 @@ static const char *eqe_type_str(u8 type) return "MLX5_EVENT_TYPE_FPGA_QP_ERROR"; case MLX5_EVENT_TYPE_GENERAL_EVENT: return "MLX5_EVENT_TYPE_GENERAL_EVENT"; + case MLX5_EVENT_TYPE_DEVICE_TRACER: + return "MLX5_EVENT_TYPE_DEVICE_TRACER"; default: return "Unrecognized event"; } @@ -576,6 +579,11 @@ static irqreturn_t mlx5_eq_int(int irq, void *eq_ptr) case MLX5_EVENT_TYPE_GENERAL_EVENT: general_event_handler(dev, eqe); break; + + case MLX5_EVENT_TYPE_DEVICE_TRACER: + mlx5_fw_tracer_event(dev, eqe); + break; + default: mlx5_core_warn(dev, "Unhandled event 0x%x on EQ 0x%x\n", eqe->type, eq->eqn); @@ -853,6 +861,9 @@ int mlx5_start_eqs(struct mlx5_core_dev *dev) if (MLX5_CAP_GEN(dev, temp_warn_event)) async_event_mask |= (1ull << MLX5_EVENT_TYPE_TEMP_WARN_EVENT); + if (MLX5_CAP_MCAM_REG(dev, tracer_registers)) + async_event_mask |= (1ull << MLX5_EVENT_TYPE_DEVICE_TRACER); + err = mlx5_create_map_eq(dev, &table->cmd_eq, MLX5_EQ_VEC_CMD, MLX5_NUM_CMD_EQE, 1ull << MLX5_EVENT_TYPE_CMD, "mlx5_cmd_eq", MLX5_EQ_TYPE_ASYNC); diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h index 0566c6a94805..d489494b0a84 100644 --- a/include/linux/mlx5/device.h +++ b/include/linux/mlx5/device.h @@ -332,6 +332,13 @@ enum mlx5_event { MLX5_EVENT_TYPE_FPGA_ERROR = 0x20, MLX5_EVENT_TYPE_FPGA_QP_ERROR = 0x21, + + MLX5_EVENT_TYPE_DEVICE_TRACER = 0x26, +}; + +enum { + MLX5_TRACER_SUBTYPE_OWNERSHIP_CHANGE = 0x0, + MLX5_TRACER_SUBTYPE_TRACES_AVAILABLE = 0x1, }; enum { |