net/mlx5: FW tracer, register log buffer memory key
Create a memory key and protection domain for the tracer log buffer. Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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48967ffdeb
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@ -169,6 +169,48 @@ static void mlx5_fw_tracer_destroy_log_buf(struct mlx5_fw_tracer *tracer)
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free_pages((unsigned long)tracer->buff.log_buf, get_order(tracer->buff.size));
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}
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static int mlx5_fw_tracer_create_mkey(struct mlx5_fw_tracer *tracer)
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{
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struct mlx5_core_dev *dev = tracer->dev;
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int err, inlen, i;
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__be64 *mtt;
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void *mkc;
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u32 *in;
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inlen = MLX5_ST_SZ_BYTES(create_mkey_in) +
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sizeof(*mtt) * round_up(TRACER_BUFFER_PAGE_NUM, 2);
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in = kvzalloc(inlen, GFP_KERNEL);
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if (!in)
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return -ENOMEM;
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MLX5_SET(create_mkey_in, in, translations_octword_actual_size,
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DIV_ROUND_UP(TRACER_BUFFER_PAGE_NUM, 2));
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mtt = (u64 *)MLX5_ADDR_OF(create_mkey_in, in, klm_pas_mtt);
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for (i = 0 ; i < TRACER_BUFFER_PAGE_NUM ; i++)
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mtt[i] = cpu_to_be64(tracer->buff.dma + i * PAGE_SIZE);
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mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
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MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_MTT);
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MLX5_SET(mkc, mkc, lr, 1);
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MLX5_SET(mkc, mkc, lw, 1);
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MLX5_SET(mkc, mkc, pd, tracer->buff.pdn);
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MLX5_SET(mkc, mkc, bsf_octword_size, 0);
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MLX5_SET(mkc, mkc, qpn, 0xffffff);
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MLX5_SET(mkc, mkc, log_page_size, PAGE_SHIFT);
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MLX5_SET(mkc, mkc, translations_octword_size,
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DIV_ROUND_UP(TRACER_BUFFER_PAGE_NUM, 2));
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MLX5_SET64(mkc, mkc, start_addr, tracer->buff.dma);
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MLX5_SET64(mkc, mkc, len, tracer->buff.size);
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err = mlx5_core_create_mkey(dev, &tracer->buff.mkey, in, inlen);
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if (err)
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mlx5_core_warn(dev, "FWTracer: Failed to create mkey, %d\n", err);
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kvfree(in);
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return err;
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}
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static void mlx5_fw_tracer_free_strings_db(struct mlx5_fw_tracer *tracer)
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{
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u32 num_string_db = tracer->str_db.num_string_db;
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@ -363,13 +405,26 @@ int mlx5_fw_tracer_init(struct mlx5_fw_tracer *tracer)
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if (!tracer->str_db.loaded)
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queue_work(tracer->work_queue, &tracer->read_fw_strings_work);
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err = mlx5_fw_tracer_ownership_acquire(tracer);
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err = mlx5_core_alloc_pd(dev, &tracer->buff.pdn);
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if (err) {
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mlx5_core_dbg(dev, "FWTracer: Ownership was not granted %d\n", err);
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return 0; /* return 0 since ownership can be acquired on a later FW event */
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mlx5_core_warn(dev, "FWTracer: Failed to allocate PD %d\n", err);
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return err;
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}
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err = mlx5_fw_tracer_create_mkey(tracer);
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if (err) {
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mlx5_core_warn(dev, "FWTracer: Failed to create mkey %d\n", err);
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goto err_dealloc_pd;
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}
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err = mlx5_fw_tracer_ownership_acquire(tracer);
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if (err) /* Don't fail since ownership can be acquired on a later FW event */
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mlx5_core_dbg(dev, "FWTracer: Ownership was not granted %d\n", err);
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return 0;
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err_dealloc_pd:
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mlx5_core_dealloc_pd(dev, tracer->buff.pdn);
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return err;
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}
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void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer)
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@ -381,6 +436,9 @@ void mlx5_fw_tracer_cleanup(struct mlx5_fw_tracer *tracer)
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if (tracer->owner)
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mlx5_fw_tracer_ownership_release(tracer);
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mlx5_core_destroy_mkey(tracer->dev, &tracer->buff.mkey);
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mlx5_core_dealloc_pd(tracer->dev, tracer->buff.pdn);
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}
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void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer)
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