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| author |   Michael S. Tsirkin <mst@mellanox.co.il> | 2005-04-16 15:26:30 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:26:30 -0700 |
| commit | e0f5fdca1ca9d1659b920827e5cf6dbad20e5391 (patch) | |
| tree | 71e6410e14c4c285ce128e99070a38ded75a14f7 /drivers/infiniband/hw/mthca/mthca_dev.h | |
| parent | [PATCH] IB/mthca: split MR key munging routines (diff) | |
| download | linux-dev-e0f5fdca1ca9d1659b920827e5cf6dbad20e5391.tar.xz linux-dev-e0f5fdca1ca9d1659b920827e5cf6dbad20e5391.zip | |
[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_dev.h')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_dev.h | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h index 1faaf542a4e1..cca3ca7196a3 100644 --- a/drivers/infiniband/hw/mthca/mthca_dev.h +++ b/drivers/infiniband/hw/mthca/mthca_dev.h @@ -61,7 +61,8 @@ enum { MTHCA_FLAG_SRQ = 1 << 2, MTHCA_FLAG_MSI = 1 << 3, MTHCA_FLAG_MSI_X = 1 << 4, - MTHCA_FLAG_NO_LAM = 1 << 5 + MTHCA_FLAG_NO_LAM = 1 << 5, + MTHCA_FLAG_FMR = 1 << 6 }; enum { @@ -134,6 +135,7 @@ struct mthca_limits { int reserved_eqs; int num_mpts; int num_mtt_segs; + int fmr_reserved_mtts; int reserved_mtts; int reserved_mrws; int reserved_uars; @@ -178,10 +180,17 @@ struct mthca_buddy { struct mthca_mr_table { struct mthca_alloc mpt_alloc; - struct mthca_buddy mtt_buddy; + struct mthca_buddy mtt_buddy; + struct mthca_buddy *fmr_mtt_buddy; u64 mtt_base; + u64 mpt_base; struct mthca_icm_table *mtt_table; struct mthca_icm_table *mpt_table; + struct { + void __iomem *mpt_base; + void __iomem *mtt_base; + struct mthca_buddy mtt_buddy; + } tavor_fmr; }; struct mthca_eq_table { @@ -380,7 +389,17 @@ int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd, u64 *buffer_list, int buffer_size_shift, int list_len, u64 iova, u64 total_size, u32 access, struct mthca_mr *mr); -void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr); +void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr); + +int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd, + u32 access, struct mthca_fmr *fmr); +int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, + int list_len, u64 iova); +void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr); +int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, + int list_len, u64 iova); +void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr); +int mthca_free_fmr(struct mthca_dev *dev, struct mthca_fmr *fmr); int mthca_map_eq_icm(struct mthca_dev *dev, u64 icm_virt); void mthca_unmap_eq_icm(struct mthca_dev *dev); |