diff options
| author |   Jack Morgenstein <jackm@dev.mellanox.co.il> | 2007-08-01 12:28:53 +0300 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2007-10-09 19:59:16 -0700 |
| commit | d7bb58fb1c0e7264a7261c7d0304121ef9402e94 (patch) | |
| tree | aefbae7ee4b4b84022a7646372ddfcdb0a99e72f /drivers/infiniband/hw/mlx4 | |
| parent | mlx4_core: Fix meaning of dev->caps.reserved_mtts (diff) | |
| download | linux-dev-d7bb58fb1c0e7264a7261c7d0304121ef9402e94.tar.xz linux-dev-d7bb58fb1c0e7264a7261c7d0304121ef9402e94.zip | |
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 <jackm@dev.mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/mr.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c index 85ae906f1d12..734ec2bd15cd 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) |