diff options
| author | Selvin Xavier <selvin.xavier@broadcom.com> | 2024-08-18 21:47:23 -0700 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2024-08-27 10:15:57 -0300 |
| commit | de1d364c3815f9360a0945097ca2731950e914fa (patch) | |
| tree | 5b3bc1650119f6875eb1bfda77c93563be156bfd /drivers/infiniband/hw/bnxt_re/qplib_fp.h | |
| parent | 5be63fc19fcaa4c236b307420483578a56986a37 (diff) | |
RDMA/bnxt_re: Add support for Variable WQE in Genp7 adapters
Variable size WQE means that each send Work Queue Entry to HW can use
different WQE sizes as opposed to the static WQE size on the current
devices. Set variable WQE mode for Gen P7 devices. Depth of the Queue will
be a multiple of slot which is 16 bytes. The number of slots should be a
multiple of 256 as per the HW requirement.
Initialize the Software shadow queue to hold requests equal to the number
of slots. Also, do not expose the variable size WQE capability until the
last patch in the series.
Link: https://patch.msgid.link/r/1724042847-1481-2-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Hongguang Gao <hongguang.gao@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/bnxt_re/qplib_fp.h')
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/qplib_fp.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.h b/drivers/infiniband/hw/bnxt_re/qplib_fp.h index 56538b90d6c5..f54d7a0c7dad 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h @@ -251,6 +251,7 @@ struct bnxt_qplib_q { struct bnxt_qplib_db_info dbinfo; struct bnxt_qplib_sg_info sg_info; u32 max_wqe; + u32 max_sw_wqe; u16 wqe_size; u16 q_full_delta; u16 max_sge; @@ -586,15 +587,22 @@ static inline void bnxt_qplib_swq_mod_start(struct bnxt_qplib_q *que, u32 idx) que->swq_start = que->swq[idx].next_idx; } -static inline u32 bnxt_qplib_get_depth(struct bnxt_qplib_q *que) +static inline u32 bnxt_qplib_get_depth(struct bnxt_qplib_q *que, u8 wqe_mode, bool is_sq) { - return (que->wqe_size * que->max_wqe) / sizeof(struct sq_sge); + u32 slots; + + /* Queue depth is the number of slots. */ + slots = (que->wqe_size * que->max_wqe) / sizeof(struct sq_sge); + /* For variable WQE mode, need to align the slots to 256 */ + if (wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE && is_sq) + slots = ALIGN(slots, BNXT_VAR_MAX_SLOT_ALIGN); + return slots; } static inline u32 bnxt_qplib_set_sq_size(struct bnxt_qplib_q *que, u8 wqe_mode) { return (wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ? - que->max_wqe : bnxt_qplib_get_depth(que); + que->max_wqe : bnxt_qplib_get_depth(que, wqe_mode, true); } static inline u32 bnxt_qplib_set_sq_max_slot(u8 wqe_mode) |