From 38ae6a535470b959df67ded6798fc542bb212e19 Mon Sep 17 00:00:00 2001 From: Yevgeny Petrilin Date: Fri, 25 Apr 2008 14:27:08 -0700 Subject: mlx4_core: Add HW queues allocation helpers Wrap doorbell, buffer and MTT allocation in helper functions for ethernet and FC modules to use. Signed-off-by: Yevgeny Petrilin Signed-off-by: Roland Dreier --- drivers/net/mlx4/alloc.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) (limited to 'drivers') diff --git a/drivers/net/mlx4/alloc.c b/drivers/net/mlx4/alloc.c index 43c6d04bb88..f9d6b4dca18 100644 --- a/drivers/net/mlx4/alloc.c +++ b/drivers/net/mlx4/alloc.c @@ -307,3 +307,49 @@ void mlx4_db_free(struct mlx4_dev *dev, struct mlx4_db *db) mutex_unlock(&priv->pgdir_mutex); } EXPORT_SYMBOL_GPL(mlx4_db_free); + +int mlx4_alloc_hwq_res(struct mlx4_dev *dev, struct mlx4_hwq_resources *wqres, + int size, int max_direct) +{ + int err; + + err = mlx4_db_alloc(dev, &wqres->db, 1); + if (err) + return err; + + *wqres->db.db = 0; + + err = mlx4_buf_alloc(dev, size, max_direct, &wqres->buf); + if (err) + goto err_db; + + err = mlx4_mtt_init(dev, wqres->buf.npages, wqres->buf.page_shift, + &wqres->mtt); + if (err) + goto err_buf; + + err = mlx4_buf_write_mtt(dev, &wqres->mtt, &wqres->buf); + if (err) + goto err_mtt; + + return 0; + +err_mtt: + mlx4_mtt_cleanup(dev, &wqres->mtt); +err_buf: + mlx4_buf_free(dev, size, &wqres->buf); +err_db: + mlx4_db_free(dev, &wqres->db); + + return err; +} +EXPORT_SYMBOL_GPL(mlx4_alloc_hwq_res); + +void mlx4_free_hwq_res(struct mlx4_dev *dev, struct mlx4_hwq_resources *wqres, + int size) +{ + mlx4_mtt_cleanup(dev, &wqres->mtt); + mlx4_buf_free(dev, size, &wqres->buf); + mlx4_db_free(dev, &wqres->db); +} +EXPORT_SYMBOL_GPL(mlx4_free_hwq_res); -- cgit v1.2.3