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authorVladimir Sokolovsky <vlad@dev.mellanox.co.il>2008-04-16 21:09:33 -0700
committerRoland Dreier <rolandd@cisco.com>2008-04-16 21:09:33 -0700
commitbbf8eed1a0f8949f7385146624f736f829992a70 (patch)
tree5cf6a5c76ca4c038d3ca0f53abc5f2976872696b /drivers/net/mlx4
parent3fdcb97f0b8d8a29117dc36acd0b15965d2a2160 (diff)
downloadop-kernel-dev-bbf8eed1a0f8949f7385146624f736f829992a70.zip
op-kernel-dev-bbf8eed1a0f8949f7385146624f736f829992a70.tar.gz
IB/mlx4: Add support for resizing CQs
Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/net/mlx4')
-rw-r--r--drivers/net/mlx4/cq.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/net/mlx4/cq.c b/drivers/net/mlx4/cq.c
index 8c31434..caa5bcf 100644
--- a/drivers/net/mlx4/cq.c
+++ b/drivers/net/mlx4/cq.c
@@ -159,6 +159,34 @@ int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
}
EXPORT_SYMBOL_GPL(mlx4_cq_modify);
+int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq,
+ int entries, struct mlx4_mtt *mtt)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ struct mlx4_cq_context *cq_context;
+ u64 mtt_addr;
+ int err;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ cq_context = mailbox->buf;
+ memset(cq_context, 0, sizeof *cq_context);
+
+ cq_context->logsize_usrpage = cpu_to_be32(ilog2(entries) << 24);
+ cq_context->log_page_size = mtt->page_shift - 12;
+ mtt_addr = mlx4_mtt_addr(dev, mtt);
+ cq_context->mtt_base_addr_h = mtt_addr >> 32;
+ cq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);
+
+ err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, 1);
+
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_cq_resize);
+
int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt,
struct mlx4_uar *uar, u64 db_rec, struct mlx4_cq *cq)
{
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