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| author | Hoang-Nam Nguyen <hnguyen@de.ibm.com> | 2007-07-20 16:01:51 +0200 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-07-20 21:19:43 -0700 |
| commit | 5bb7d9290cd23a55906e4fe7a7fedecf29468c81 (patch) | |
| tree | a22071c38078848296c554281f3c0d6acdfa2bf3 /drivers/infiniband/hw/ehca/ehca_classes.h | |
| parent | 23f1b38481596ad77e5f51562977b12c8418eee3 (diff) | |
| download | linux-5bb7d9290cd23a55906e4fe7a7fedecf29468c81.tar.gz linux-5bb7d9290cd23a55906e4fe7a7fedecf29468c81.tar.bz2 linux-5bb7d9290cd23a55906e4fe7a7fedecf29468c81.zip | |
IB/ehca: Support large page MRs
Add support for MR pages larger than 4K on eHCA2. This reduces
firmware memory consumption. If enabled via the mr_largepage module
parameter, the MR page size will be determined based on the MR length
and the hardware capabilities -- if the MR is >= 16M, 16M pages are
used, for example.
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_classes.h')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_classes.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h index 043e4fb23fb0..63b8b9f7c4fc 100644 --- a/drivers/infiniband/hw/ehca/ehca_classes.h +++ b/drivers/infiniband/hw/ehca/ehca_classes.h @@ -100,6 +100,11 @@ struct ehca_sport { struct ehca_sma_attr saved_attr; }; +#define HCA_CAP_MR_PGSIZE_4K 1 +#define HCA_CAP_MR_PGSIZE_64K 2 +#define HCA_CAP_MR_PGSIZE_1M 4 +#define HCA_CAP_MR_PGSIZE_16M 8 + struct ehca_shca { struct ib_device ib_device; struct ibmebus_dev *ibmebus_dev; @@ -115,6 +120,8 @@ struct ehca_shca { struct h_galpas galpas; struct mutex modify_mutex; u64 hca_cap; + /* MR pgsize: bit 0-3 means 4K, 64K, 1M, 16M respectively */ + u32 hca_cap_mr_pgsize; int max_mtu; }; @@ -206,6 +213,7 @@ struct ehca_mr { enum ehca_mr_flag flags; u32 num_kpages; /* number of kernel pages */ u32 num_hwpages; /* number of hw pages to form MR */ + u64 hwpage_size; /* hw page size used for this MR */ int acl; /* ACL (stored here for usage in reregister) */ u64 *start; /* virtual start address (stored here for */ /* usage in reregister) */ @@ -240,6 +248,7 @@ struct ehca_mr_pginfo { enum ehca_mr_pgi_type type; u64 num_kpages; u64 kpage_cnt; + u64 hwpage_size; /* hw page size used for this MR */ u64 num_hwpages; /* number of hw pages */ u64 hwpage_cnt; /* counter for hw pages */ u64 next_hwpage; /* next hw page in buffer/chunk/listelem */ |