diff options
| author | Hoang-Nam Nguyen <hnguyen@de.ibm.com> | 2007-07-20 18:01:51 +0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-07-21 08:19:43 +0400 |
| commit | 5bb7d9290cd23a55906e4fe7a7fedecf29468c81 (patch) | |
| tree | a22071c38078848296c554281f3c0d6acdfa2bf3 /drivers/infiniband/hw/ehca/hcp_if.c | |
| parent | 23f1b38481596ad77e5f51562977b12c8418eee3 (diff) | |
| download | linux-5bb7d9290cd23a55906e4fe7a7fedecf29468c81.tar.xz | |
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/hcp_if.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/hcp_if.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ehca/hcp_if.c b/drivers/infiniband/hw/ehca/hcp_if.c index 3394e05f4b4f..358796ccf008 100644 --- a/drivers/infiniband/hw/ehca/hcp_if.c +++ b/drivers/infiniband/hw/ehca/hcp_if.c @@ -427,7 +427,8 @@ u64 hipz_h_register_rpage(const struct ipz_adapter_handle adapter_handle, { return ehca_plpar_hcall_norets(H_REGISTER_RPAGES, adapter_handle.handle, /* r4 */ - queue_type | pagesize << 8, /* r5 */ + (u64)queue_type | ((u64)pagesize) << 8, + /* r5 */ resource_handle, /* r6 */ logical_address_of_page, /* r7 */ count, /* r8 */ @@ -724,6 +725,9 @@ u64 hipz_h_alloc_resource_mr(const struct ipz_adapter_handle adapter_handle, u64 ret; u64 outs[PLPAR_HCALL9_BUFSIZE]; + ehca_gen_dbg("kernel PAGE_SIZE=%x access_ctrl=%016x " + "vaddr=%lx length=%lx", + (u32)PAGE_SIZE, access_ctrl, vaddr, length); ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs, adapter_handle.handle, /* r4 */ 5, /* r5 */ @@ -746,8 +750,22 @@ u64 hipz_h_register_rpage_mr(const struct ipz_adapter_handle adapter_handle, const u64 logical_address_of_page, const u64 count) { + extern int ehca_debug_level; u64 ret; + if (unlikely(ehca_debug_level >= 2)) { + if (count > 1) { + u64 *kpage; + int i; + kpage = (u64 *)abs_to_virt(logical_address_of_page); + for (i = 0; i < count; i++) + ehca_gen_dbg("kpage[%d]=%p", + i, (void *)kpage[i]); + } else + ehca_gen_dbg("kpage=%p", + (void *)logical_address_of_page); + } + if ((count > 1) && (logical_address_of_page & (EHCA_PAGESIZE-1))) { ehca_gen_err("logical_address_of_page not on a 4k boundary " "adapter_handle=%lx mr=%p mr_handle=%lx " |