diff options
| author | Chandramohan Akula <[email protected]> | 2024-08-29 15:34:05 +0000 |
|---|---|---|
| committer | Leon Romanovsky <[email protected]> | 2024-09-02 07:10:36 +0000 |
| commit | 181028a0d84cdcc7ac86d05cc49eaa416ce85c8b (patch) | |
| tree | 4b545197838197067cef61b8ed097162ae341fb3 /drivers/infiniband/hw/bnxt_re/main.c | |
| parent | RDMA/bnxt_re: Refactor the BNXT_RE_METHOD_GET_TOGGLE_MEM method (diff) | |
| download | kernel-181028a0d84cdcc7ac86d05cc49eaa416ce85c8b.tar.gz kernel-181028a0d84cdcc7ac86d05cc49eaa416ce85c8b.zip | |
RDMA/bnxt_re: Share a page to expose per SRQ info with userspace
Gen P7 adapters needs to share a toggle bits information received
in kernel driver with the user space. User space needs this
info to arm the SRQ.
User space application can get this page using the
UAPI routines. Library will mmap this page and get the
toggle bits to be used in the next ARM Doorbell.
Uses a hash list to map the SRQ structure from the SRQ ID.
SRQ structure is retrieved from the hash list while the
library calls the UAPI routine to get the toggle page
mapping. Currently the full page is mapped per SRQ. This
can be optimized to enable multiple SRQs from the same
application share the same page and different offsets
in the page
Signed-off-by: Chandramohan Akula <[email protected]>
Signed-off-by: Selvin Xavier <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Leon Romanovsky <[email protected]>
Diffstat (limited to 'drivers/infiniband/hw/bnxt_re/main.c')
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/main.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c index 31ba89cffe9d..16a84ca1ce48 100644 --- a/drivers/infiniband/hw/bnxt_re/main.c +++ b/drivers/infiniband/hw/bnxt_re/main.c @@ -139,8 +139,10 @@ static void bnxt_re_set_drv_mode(struct bnxt_re_dev *rdev) if (bnxt_re_hwrm_qcaps(rdev)) dev_err(rdev_to_dev(rdev), "Failed to query hwrm qcaps\n"); - if (bnxt_qplib_is_chip_gen_p7(rdev->chip_ctx)) + if (bnxt_qplib_is_chip_gen_p7(rdev->chip_ctx)) { cctx->modes.toggle_bits |= BNXT_QPLIB_CQ_TOGGLE_BIT; + cctx->modes.toggle_bits |= BNXT_QPLIB_SRQ_TOGGLE_BIT; + } } static void bnxt_re_destroy_chip_ctx(struct bnxt_re_dev *rdev) @@ -1771,6 +1773,8 @@ static int bnxt_re_dev_init(struct bnxt_re_dev *rdev) bnxt_re_vf_res_config(rdev); } hash_init(rdev->cq_hash); + if (rdev->chip_ctx->modes.toggle_bits & BNXT_QPLIB_SRQ_TOGGLE_BIT) + hash_init(rdev->srq_hash); return 0; free_sctx: |