common/mlx5: move doorbell record from net driver

[dpdk.git] / drivers / net / mlx5 / mlx5.c

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 6b85133..ddbe29d 100644 (file)
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -1684,126 +1684,6 @@ mlx5_set_metadata_mask(struct rte_eth_dev *dev)
        DRV_LOG(DEBUG, "metadata reg_c0 mask %08X", sh->dv_regc0_mask);
 }
 
-/**
- * Allocate page of door-bells and register it using DevX API.
- *
- * @param [in] dev
- *   Pointer to Ethernet device.
- *
- * @return
- *   Pointer to new page on success, NULL otherwise.
- */
-static struct mlx5_devx_dbr_page *
-mlx5_alloc_dbr_page(struct rte_eth_dev *dev)
-{
-       struct mlx5_priv *priv = dev->data->dev_private;
-       struct mlx5_devx_dbr_page *page;
-
-       /* Allocate space for door-bell page and management data. */
-       page = rte_calloc_socket(__func__, 1, sizeof(struct mlx5_devx_dbr_page),
-                                RTE_CACHE_LINE_SIZE, dev->device->numa_node);
-       if (!page) {
-               DRV_LOG(ERR, "port %u cannot allocate dbr page",
-                       dev->data->port_id);
-               return NULL;
-       }
-       /* Register allocated memory. */
-       page->umem = mlx5_glue->devx_umem_reg(priv->sh->ctx, page->dbrs,
-                                             MLX5_DBR_PAGE_SIZE, 0);
-       if (!page->umem) {
-               DRV_LOG(ERR, "port %u cannot umem reg dbr page",
-                       dev->data->port_id);
-               rte_free(page);
-               return NULL;
-       }
-       return page;
-}
-
-/**
- * Find the next available door-bell, allocate new page if needed.
- *
- * @param [in] dev
- *   Pointer to Ethernet device.
- * @param [out] dbr_page
- *   Door-bell page containing the page data.
- *
- * @return
- *   Door-bell address offset on success, a negative error value otherwise.
- */
-int64_t
-mlx5_get_dbr(struct rte_eth_dev *dev, struct mlx5_devx_dbr_page **dbr_page)
-{
-       struct mlx5_priv *priv = dev->data->dev_private;
-       struct mlx5_devx_dbr_page *page = NULL;
-       uint32_t i, j;
-
-       LIST_FOREACH(page, &priv->dbrpgs, next)
-               if (page->dbr_count < MLX5_DBR_PER_PAGE)
-                       break;
-       if (!page) { /* No page with free door-bell exists. */
-               page = mlx5_alloc_dbr_page(dev);
-               if (!page) /* Failed to allocate new page. */
-                       return (-1);
-               LIST_INSERT_HEAD(&priv->dbrpgs, page, next);
-       }
-       /* Loop to find bitmap part with clear bit. */
-       for (i = 0;
-            i < MLX5_DBR_BITMAP_SIZE && page->dbr_bitmap[i] == UINT64_MAX;
-            i++)
-               ; /* Empty. */
-       /* Find the first clear bit. */
-       MLX5_ASSERT(i < MLX5_DBR_BITMAP_SIZE);
-       j = rte_bsf64(~page->dbr_bitmap[i]);
-       page->dbr_bitmap[i] |= (UINT64_C(1) << j);
-       page->dbr_count++;
-       *dbr_page = page;
-       return (((i * 64) + j) * sizeof(uint64_t));
-}
-
-/**
- * Release a door-bell record.
- *
- * @param [in] dev
- *   Pointer to Ethernet device.
- * @param [in] umem_id
- *   UMEM ID of page containing the door-bell record to release.
- * @param [in] offset
- *   Offset of door-bell record in page.
- *
- * @return
- *   0 on success, a negative error value otherwise.
- */
-int32_t
-mlx5_release_dbr(struct rte_eth_dev *dev, uint32_t umem_id, uint64_t offset)
-{
-       struct mlx5_priv *priv = dev->data->dev_private;
-       struct mlx5_devx_dbr_page *page = NULL;
-       int ret = 0;
-
-       LIST_FOREACH(page, &priv->dbrpgs, next)
-               /* Find the page this address belongs to. */
-               if (mlx5_os_get_umem_id(page->umem) == umem_id)
-                       break;
-       if (!page)
-               return -EINVAL;
-       page->dbr_count--;
-       if (!page->dbr_count) {
-               /* Page not used, free it and remove from list. */
-               LIST_REMOVE(page, next);
-               if (page->umem)
-                       ret = -mlx5_glue->devx_umem_dereg(page->umem);
-               rte_free(page);
-       } else {
-               /* Mark in bitmap that this door-bell is not in use. */
-               offset /= MLX5_DBR_SIZE;
-               int i = offset / 64;
-               int j = offset % 64;
-
-               page->dbr_bitmap[i] &= ~(UINT64_C(1) << j);
-       }
-       return ret;
-}
-
 int
 rte_pmd_mlx5_get_dyn_flag_names(char *names[], unsigned int n)
 {