diff options
Diffstat (limited to 'drivers/infiniband/hw/i40iw/i40iw_uk.c')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_uk.c | 76 |
1 files changed, 62 insertions, 14 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_uk.c b/drivers/infiniband/hw/i40iw/i40iw_uk.c index 0aadb7a0d1aa..3ec5389a81a1 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_uk.c +++ b/drivers/infiniband/hw/i40iw/i40iw_uk.c @@ -821,6 +821,18 @@ static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq, I40IW_RING_SET_TAIL(qp->rq_ring, array_idx + 1); pring = &qp->rq_ring; } else { + if (qp->first_sq_wq) { + qp->first_sq_wq = false; + if (!wqe_idx && (qp->sq_ring.head == qp->sq_ring.tail)) { + I40IW_RING_MOVE_HEAD_NOCHECK(cq->cq_ring); + I40IW_RING_MOVE_TAIL(cq->cq_ring); + set_64bit_val(cq->shadow_area, 0, + I40IW_RING_GETCURRENT_HEAD(cq->cq_ring)); + memset(info, 0, sizeof(struct i40iw_cq_poll_info)); + return i40iw_cq_poll_completion(cq, info); + } + } + if (info->comp_status != I40IW_COMPL_STATUS_FLUSHED) { info->wr_id = qp->sq_wrtrk_array[wqe_idx].wrid; info->bytes_xfered = qp->sq_wrtrk_array[wqe_idx].wr_len; @@ -882,8 +894,21 @@ exit: } /** + * i40iw_qp_roundup - return round up QP WQ depth + * @wqdepth: WQ depth in quantas to round up + */ +static int i40iw_qp_round_up(u32 wqdepth) +{ + int scount = 1; + + for (wqdepth--; scount <= 16; scount *= 2) + wqdepth |= wqdepth >> scount; + + return ++wqdepth; +} + +/** * i40iw_get_wqe_shift - get shift count for maximum wqe size - * @wqdepth: depth of wq required. * @sge: Maximum Scatter Gather Elements wqe * @inline_data: Maximum inline data size * @shift: Returns the shift needed based on sge @@ -893,22 +918,48 @@ exit: * For 2 or 3 SGEs or inline data <= 48, shift = 1 (wqe size of 64 bytes). * Shift of 2 otherwise (wqe size of 128 bytes). */ -enum i40iw_status_code i40iw_get_wqe_shift(u32 wqdepth, u32 sge, u32 inline_data, u8 *shift) +void i40iw_get_wqe_shift(u32 sge, u32 inline_data, u8 *shift) { - u32 size; - *shift = 0; if (sge > 1 || inline_data > 16) *shift = (sge < 4 && inline_data <= 48) ? 1 : 2; +} - /* check if wqdepth is multiple of 2 or not */ +/* + * i40iw_get_sqdepth - get SQ depth (quantas) + * @sq_size: SQ size + * @shift: shift which determines size of WQE + * @sqdepth: depth of SQ + * + */ +enum i40iw_status_code i40iw_get_sqdepth(u32 sq_size, u8 shift, u32 *sqdepth) +{ + *sqdepth = i40iw_qp_round_up((sq_size << shift) + I40IW_SQ_RSVD); - if ((wqdepth < I40IWQP_SW_MIN_WQSIZE) || (wqdepth & (wqdepth - 1))) + if (*sqdepth < (I40IW_QP_SW_MIN_WQSIZE << shift)) + *sqdepth = I40IW_QP_SW_MIN_WQSIZE << shift; + else if (*sqdepth > I40IW_QP_SW_MAX_SQ_QUANTAS) return I40IW_ERR_INVALID_SIZE; - size = wqdepth << *shift; /* multiple of 32 bytes count */ - if (size > I40IWQP_SW_MAX_WQSIZE) + return 0; +} + +/* + * i40iw_get_rq_depth - get RQ depth (quantas) + * @rq_size: RQ size + * @shift: shift which determines size of WQE + * @rqdepth: depth of RQ + * + */ +enum i40iw_status_code i40iw_get_rqdepth(u32 rq_size, u8 shift, u32 *rqdepth) +{ + *rqdepth = i40iw_qp_round_up((rq_size << shift) + I40IW_RQ_RSVD); + + if (*rqdepth < (I40IW_QP_SW_MIN_WQSIZE << shift)) + *rqdepth = I40IW_QP_SW_MIN_WQSIZE << shift; + else if (*rqdepth > I40IW_QP_SW_MAX_RQ_QUANTAS) return I40IW_ERR_INVALID_SIZE; + return 0; } @@ -962,9 +1013,7 @@ enum i40iw_status_code i40iw_qp_uk_init(struct i40iw_qp_uk *qp, if (info->max_rq_frag_cnt > I40IW_MAX_WQ_FRAGMENT_COUNT) return I40IW_ERR_INVALID_FRAG_COUNT; - ret_code = i40iw_get_wqe_shift(info->sq_size, info->max_sq_frag_cnt, info->max_inline_data, &sqshift); - if (ret_code) - return ret_code; + i40iw_get_wqe_shift(info->max_sq_frag_cnt, info->max_inline_data, &sqshift); qp->sq_base = info->sq; qp->rq_base = info->rq; @@ -988,6 +1037,7 @@ enum i40iw_status_code i40iw_qp_uk_init(struct i40iw_qp_uk *qp, I40IW_RING_MOVE_TAIL(qp->sq_ring); I40IW_RING_MOVE_HEAD(qp->initial_ring, ret_code); qp->swqe_polarity = 1; + qp->first_sq_wq = true; qp->swqe_polarity_deferred = 1; qp->rwqe_polarity = 0; @@ -997,9 +1047,7 @@ enum i40iw_status_code i40iw_qp_uk_init(struct i40iw_qp_uk *qp, I40IW_RING_INIT(qp->rq_ring, qp->rq_size); switch (info->abi_ver) { case 4: - ret_code = i40iw_get_wqe_shift(info->rq_size, info->max_rq_frag_cnt, 0, &rqshift); - if (ret_code) - return ret_code; + i40iw_get_wqe_shift(info->max_rq_frag_cnt, 0, &rqshift); break; case 5: /* fallthrough until next ABI version */ default: |