From d7bb58fb1c0e7264a7261c7d0304121ef9402e94 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Wed, 1 Aug 2007 12:28:53 +0300 Subject: mlx4_core: Write MTTs from CPU instead with of WRITE_MTT FW command Write MTT entries directly to ICM from the driver (eliminating use of WRITE_MTT command). This reduces the number of FW commands needed to register an MR by at least a factor of 2 and speeds up memory registration significantly. This code will also be used to implement FMRs. Signed-off-by: Jack Morgenstein Signed-off-by: Michael S. Tsirkin Signed-off-by: Roland Dreier --- drivers/infiniband/hw/mlx4/mr.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/infiniband/hw/mlx4/mr.c') diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c index 85ae906f1d1..734ec2bd15c 100644 --- a/drivers/infiniband/hw/mlx4/mr.c +++ b/drivers/infiniband/hw/mlx4/mr.c @@ -96,11 +96,10 @@ int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, pages[i++] = sg_dma_address(&chunk->page_list[j]) + umem->page_size * k; /* - * Be friendly to WRITE_MTT firmware - * command, and pass it chunks of - * appropriate size. + * Be friendly to mlx4_write_mtt() and + * pass it chunks of appropriate size. */ - if (i == PAGE_SIZE / sizeof (u64) - 2) { + if (i == PAGE_SIZE / sizeof (u64)) { err = mlx4_write_mtt(dev->dev, mtt, n, i, pages); if (err) -- cgit v1.2.3