diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/uar.c')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/uar.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/uar.c b/drivers/net/ethernet/mellanox/mlx5/core/uar.c index fcc0270ea72f..07b273cccc26 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/uar.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/uar.c @@ -67,120 +67,6 @@ int mlx5_cmd_free_uar(struct mlx5_core_dev *dev, u32 uarn) } EXPORT_SYMBOL(mlx5_cmd_free_uar); -static int need_bfreg_lock(int bfregn) -{ - int tot_bfregs = NUM_DRIVER_UARS * MLX5_BFREGS_PER_UAR; - - if (bfregn == 0 || tot_bfregs - NUM_LOW_LAT_BFREGS) - return 0; - - return 1; -} - -int mlx5_alloc_bfregs(struct mlx5_core_dev *dev, struct mlx5_bfreg_info *bfregi) -{ - int tot_bfregs = NUM_DRIVER_UARS * MLX5_BFREGS_PER_UAR; - struct mlx5_bf *bf; - phys_addr_t addr; - int err; - int i; - - bfregi->num_uars = NUM_DRIVER_UARS; - bfregi->num_low_latency_bfregs = NUM_LOW_LAT_BFREGS; - - mutex_init(&bfregi->lock); - bfregi->uars = kcalloc(bfregi->num_uars, sizeof(*bfregi->uars), GFP_KERNEL); - if (!bfregi->uars) - return -ENOMEM; - - bfregi->bfs = kcalloc(tot_bfregs, sizeof(*bfregi->bfs), GFP_KERNEL); - if (!bfregi->bfs) { - err = -ENOMEM; - goto out_uars; - } - - bfregi->bitmap = kcalloc(BITS_TO_LONGS(tot_bfregs), sizeof(*bfregi->bitmap), - GFP_KERNEL); - if (!bfregi->bitmap) { - err = -ENOMEM; - goto out_bfs; - } - - bfregi->count = kcalloc(tot_bfregs, sizeof(*bfregi->count), GFP_KERNEL); - if (!bfregi->count) { - err = -ENOMEM; - goto out_bitmap; - } - - for (i = 0; i < bfregi->num_uars; i++) { - err = mlx5_cmd_alloc_uar(dev, &bfregi->uars[i].index); - if (err) - goto out_count; - - addr = dev->iseg_base + ((phys_addr_t)(bfregi->uars[i].index) << PAGE_SHIFT); - bfregi->uars[i].map = ioremap(addr, PAGE_SIZE); - if (!bfregi->uars[i].map) { - mlx5_cmd_free_uar(dev, bfregi->uars[i].index); - err = -ENOMEM; - goto out_count; - } - mlx5_core_dbg(dev, "allocated uar index 0x%x, mmaped at %p\n", - bfregi->uars[i].index, bfregi->uars[i].map); - } - - for (i = 0; i < tot_bfregs; i++) { - bf = &bfregi->bfs[i]; - - bf->buf_size = (1 << MLX5_CAP_GEN(dev, log_bf_reg_size)) / 2; - bf->uar = &bfregi->uars[i / MLX5_BFREGS_PER_UAR]; - bf->regreg = bfregi->uars[i / MLX5_BFREGS_PER_UAR].map; - bf->reg = NULL; /* Add WC support */ - bf->offset = (i % MLX5_BFREGS_PER_UAR) * - (1 << MLX5_CAP_GEN(dev, log_bf_reg_size)) + - MLX5_BF_OFFSET; - bf->need_lock = need_bfreg_lock(i); - spin_lock_init(&bf->lock); - spin_lock_init(&bf->lock32); - bf->bfregn = i; - } - - return 0; - -out_count: - for (i--; i >= 0; i--) { - iounmap(bfregi->uars[i].map); - mlx5_cmd_free_uar(dev, bfregi->uars[i].index); - } - kfree(bfregi->count); - -out_bitmap: - kfree(bfregi->bitmap); - -out_bfs: - kfree(bfregi->bfs); - -out_uars: - kfree(bfregi->uars); - return err; -} - -int mlx5_free_bfregs(struct mlx5_core_dev *dev, struct mlx5_bfreg_info *bfregi) -{ - int i = bfregi->num_uars; - - for (i--; i >= 0; i--) { - iounmap(bfregi->uars[i].map); - mlx5_cmd_free_uar(dev, bfregi->uars[i].index); - } - - kfree(bfregi->count); - kfree(bfregi->bitmap); - kfree(bfregi->bfs); - kfree(bfregi->uars); - - return 0; -} - int mlx5_alloc_map_uar(struct mlx5_core_dev *mdev, struct mlx5_uar *uar, bool map_wc) { |