diff options
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/resource.c')
-rw-r--r-- | drivers/infiniband/hw/cxgb4/resource.c | 51 |
1 files changed, 48 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/cxgb4/resource.c b/drivers/infiniband/hw/cxgb4/resource.c index 0ef25ae05e6f..57ed26b3cc21 100644 --- a/drivers/infiniband/hw/cxgb4/resource.c +++ b/drivers/infiniband/hw/cxgb4/resource.c @@ -53,7 +53,8 @@ static int c4iw_init_qid_table(struct c4iw_rdev *rdev) } /* nr_* must be power of 2 */ -int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, u32 nr_pdid) +int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, + u32 nr_pdid, u32 nr_srqt) { int err = 0; err = c4iw_id_table_alloc(&rdev->resource.tpt_table, 0, nr_tpt, 1, @@ -67,7 +68,17 @@ int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, u32 nr_pdid) nr_pdid, 1, 0); if (err) goto pdid_err; + if (!nr_srqt) + err = c4iw_id_table_alloc(&rdev->resource.srq_table, 0, + 1, 1, 0); + else + err = c4iw_id_table_alloc(&rdev->resource.srq_table, 0, + nr_srqt, 0, 0); + if (err) + goto srq_err; return 0; + srq_err: + c4iw_id_table_free(&rdev->resource.pdid_table); pdid_err: c4iw_id_table_free(&rdev->resource.qid_table); qid_err: @@ -371,13 +382,21 @@ void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size) int c4iw_rqtpool_create(struct c4iw_rdev *rdev) { unsigned rqt_start, rqt_chunk, rqt_top; + int skip = 0; rdev->rqt_pool = gen_pool_create(MIN_RQT_SHIFT, -1); if (!rdev->rqt_pool) return -ENOMEM; - rqt_start = rdev->lldi.vr->rq.start; - rqt_chunk = rdev->lldi.vr->rq.size; + /* + * If SRQs are supported, then never use the first RQE from + * the RQT region. This is because HW uses RQT index 0 as NULL. + */ + if (rdev->lldi.vr->srq.size) + skip = T4_RQT_ENTRY_SIZE; + + rqt_start = rdev->lldi.vr->rq.start + skip; + rqt_chunk = rdev->lldi.vr->rq.size - skip; rqt_top = rqt_start + rqt_chunk; while (rqt_start < rqt_top) { @@ -405,6 +424,32 @@ void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev) kref_put(&rdev->rqt_kref, destroy_rqtpool); } +int c4iw_alloc_srq_idx(struct c4iw_rdev *rdev) +{ + int idx; + + idx = c4iw_id_alloc(&rdev->resource.srq_table); + mutex_lock(&rdev->stats.lock); + if (idx == -1) { + rdev->stats.srqt.fail++; + mutex_unlock(&rdev->stats.lock); + return -ENOMEM; + } + rdev->stats.srqt.cur++; + if (rdev->stats.srqt.cur > rdev->stats.srqt.max) + rdev->stats.srqt.max = rdev->stats.srqt.cur; + mutex_unlock(&rdev->stats.lock); + return idx; +} + +void c4iw_free_srq_idx(struct c4iw_rdev *rdev, int idx) +{ + c4iw_id_free(&rdev->resource.srq_table, idx); + mutex_lock(&rdev->stats.lock); + rdev->stats.srqt.cur--; + mutex_unlock(&rdev->stats.lock); +} + /* * On-Chip QP Memory. */ |