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authorMichael S. Tsirkin <mst@mellanox.co.il>2005-04-16 15:26:30 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:26:30 -0700
commite0f5fdca1ca9d1659b920827e5cf6dbad20e5391 (patch)
tree71e6410e14c4c285ce128e99070a38ded75a14f7 /drivers/infiniband/hw/mthca/mthca_main.c
parentd0a9d25cdcd511dd523357bc902979220dc72a2e (diff)
[PATCH] IB/mthca: add fast memory region implementation
Implement fast memory regions (FMRs), where the driver writes directly into the HCA's translation tables rather than requiring a firmware command. For Tavor, MTTs for FMR are separate from regular MTTs, and are reserved at driver initialization. This is done to limit the amount of virtual memory needed to map the MTTs. For Arbel, there's no such limitation, and all MTTs and MPTs may be used for FMR or for regular MR. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <roland@topspin.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_main.c')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_main.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index 7912b262a4c..fdfc2b788e6 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -73,14 +73,15 @@ static const char mthca_version[] __devinitdata =
DRV_VERSION " (" DRV_RELDATE ")\n";
static struct mthca_profile default_profile = {
- .num_qp = 1 << 16,
- .rdb_per_qp = 4,
- .num_cq = 1 << 16,
- .num_mcg = 1 << 13,
- .num_mpt = 1 << 17,
- .num_mtt = 1 << 20,
- .num_udav = 1 << 15, /* Tavor only */
- .uarc_size = 1 << 18, /* Arbel only */
+ .num_qp = 1 << 16,
+ .rdb_per_qp = 4,
+ .num_cq = 1 << 16,
+ .num_mcg = 1 << 13,
+ .num_mpt = 1 << 17,
+ .num_mtt = 1 << 20,
+ .num_udav = 1 << 15, /* Tavor only */
+ .fmr_reserved_mtts = 1 << 18, /* Tavor only */
+ .uarc_size = 1 << 18, /* Arbel only */
};
static int __devinit mthca_tune_pci(struct mthca_dev *mdev)