diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-14 13:53:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-14 13:53:22 -0700 |
| commit | cf5046323ea254be72535648a9d090b18b8510f3 (patch) | |
| tree | d44894722bd965b2f28a54c4dc4157f22b618c34 /drivers/infiniband/hw/mthca/mthca_main.c | |
| parent | ae937debe178b4327fd67d604ee83a20f22aa0de (diff) | |
| parent | 8d34ff34016959d464fd5582ea6a8226fe57ab0e (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
mlx4_core: Don't double-free IRQs when falling back from MSI-X to INTx
IB/mthca: Don't double-free IRQs when falling back from MSI-X to INTx
IB/mlx4: Add strong ordering to local inval and fast reg work requests
IB/ehca: Remove superfluous bitmasks from QP control block
RDMA/cxgb3: Limit fast register size based on T3 limitations
RDMA/cxgb3: Report correct port state and MTU
mlx4_core: Add module parameter for number of MTTs per segment
IB/mthca: Add module parameter for number of MTTs per segment
RDMA/nes: Fix off-by-one bugs in reset_adapter_ne020() and init_serdes()
infiniband: Remove void casts
IB/ehca: Increment version number
IB/ehca: Remove unnecessary memory operations for userspace queue pairs
IB/ehca: Fall back to vmalloc() for big allocations
IB/ehca: Replace vmalloc() with kmalloc() for queue allocation
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_main.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_main.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c index 1d83cf7caf3..13da9f1d24c 100644 --- a/drivers/infiniband/hw/mthca/mthca_main.c +++ b/drivers/infiniband/hw/mthca/mthca_main.c @@ -125,6 +125,10 @@ module_param_named(fmr_reserved_mtts, hca_profile.fmr_reserved_mtts, int, 0444); MODULE_PARM_DESC(fmr_reserved_mtts, "number of memory translation table segments reserved for FMR"); +static int log_mtts_per_seg = ilog2(MTHCA_MTT_SEG_SIZE / 8); +module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444); +MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-5)"); + static char mthca_version[] __devinitdata = DRV_NAME ": Mellanox InfiniBand HCA driver v" DRV_VERSION " (" DRV_RELDATE ")\n"; @@ -162,6 +166,7 @@ static int mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim) int err; u8 status; + mdev->limits.mtt_seg_size = (1 << log_mtts_per_seg) * 8; err = mthca_QUERY_DEV_LIM(mdev, dev_lim, &status); if (err) { mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n"); @@ -460,11 +465,11 @@ static int mthca_init_icm(struct mthca_dev *mdev, } /* CPU writes to non-reserved MTTs, while HCA might DMA to reserved mtts */ - mdev->limits.reserved_mtts = ALIGN(mdev->limits.reserved_mtts * MTHCA_MTT_SEG_SIZE, - dma_get_cache_alignment()) / MTHCA_MTT_SEG_SIZE; + mdev->limits.reserved_mtts = ALIGN(mdev->limits.reserved_mtts * mdev->limits.mtt_seg_size, + dma_get_cache_alignment()) / mdev->limits.mtt_seg_size; mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base, - MTHCA_MTT_SEG_SIZE, + mdev->limits.mtt_seg_size, mdev->limits.num_mtt_segs, mdev->limits.reserved_mtts, 1, 0); @@ -1315,6 +1320,12 @@ static void __init mthca_validate_profile(void) printk(KERN_WARNING PFX "Corrected fmr_reserved_mtts to %d.\n", hca_profile.fmr_reserved_mtts); } + + if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 5)) { + printk(KERN_WARNING PFX "bad log_mtts_per_seg (%d). Using default - %d\n", + log_mtts_per_seg, ilog2(MTHCA_MTT_SEG_SIZE / 8)); + log_mtts_per_seg = ilog2(MTHCA_MTT_SEG_SIZE / 8); + } } static int __init mthca_init(void) |