diff options
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_hem.c | 9 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_mr.c | 56 |
2 files changed, 40 insertions, 25 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_hem.c b/drivers/infiniband/hw/hns/hns_roce_hem.c index edc9d6b98d95..cfd2e1b60c7f 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hem.c +++ b/drivers/infiniband/hw/hns/hns_roce_hem.c @@ -1075,9 +1075,8 @@ static struct roce_hem_item *hem_list_alloc_item(struct hns_roce_dev *hr_dev, return NULL; if (exist_bt) { - hem->addr = dma_alloc_coherent(hr_dev->dev, - count * BA_BYTE_LEN, - &hem->dma_addr, GFP_KERNEL); + hem->addr = dma_alloc_coherent(hr_dev->dev, count * BA_BYTE_LEN, + &hem->dma_addr, GFP_KERNEL); if (!hem->addr) { kfree(hem); return NULL; @@ -1336,6 +1335,10 @@ static int hem_list_alloc_root_bt(struct hns_roce_dev *hr_dev, if (ba_num < 1) return -ENOMEM; + if (ba_num > unit) + return -ENOBUFS; + + ba_num = min_t(int, ba_num, unit); INIT_LIST_HEAD(&temp_root); offset = r->offset; /* indicate to last region */ diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c index 5a2a557c37b8..79b3c3023fe7 100644 --- a/drivers/infiniband/hw/hns/hns_roce_mr.c +++ b/drivers/infiniband/hw/hns/hns_roce_mr.c @@ -596,30 +596,26 @@ int hns_roce_dealloc_mw(struct ib_mw *ibmw) } static int mtr_map_region(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, - dma_addr_t *pages, struct hns_roce_buf_region *region) + struct hns_roce_buf_region *region, dma_addr_t *pages, + int max_count) { + int count, npage; + int offset, end; __le64 *mtts; - int offset; - int count; - int npage; u64 addr; - int end; int i; - /* if hopnum is 0, buffer cannot store BAs, so skip write mtt */ - if (!region->hopnum) - return 0; - offset = region->offset; end = offset + region->count; npage = 0; - while (offset < end) { + while (offset < end && npage < max_count) { + count = 0; mtts = hns_roce_hem_list_find_mtt(hr_dev, &mtr->hem_list, offset, &count, NULL); if (!mtts) return -ENOBUFS; - for (i = 0; i < count; i++) { + for (i = 0; i < count && npage < max_count; i++) { if (hr_dev->hw_rev == HNS_ROCE_HW_VER1) addr = to_hr_hw_page_addr(pages[npage]); else @@ -631,7 +627,7 @@ static int mtr_map_region(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, offset += count; } - return 0; + return npage; } static inline bool mtr_has_mtt(struct hns_roce_buf_attr *attr) @@ -779,8 +775,8 @@ int hns_roce_mtr_map(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, { struct ib_device *ibdev = &hr_dev->ib_dev; struct hns_roce_buf_region *r; - unsigned int i; - int err; + unsigned int i, mapped_cnt; + int ret; /* * Only use the first page address as root ba when hopnum is 0, this @@ -791,26 +787,42 @@ int hns_roce_mtr_map(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, return 0; } - for (i = 0; i < mtr->hem_cfg.region_count; i++) { + for (i = 0, mapped_cnt = 0; i < mtr->hem_cfg.region_count && + mapped_cnt < page_cnt; i++) { r = &mtr->hem_cfg.region[i]; + /* if hopnum is 0, no need to map pages in this region */ + if (!r->hopnum) { + mapped_cnt += r->count; + continue; + } + if (r->offset + r->count > page_cnt) { - err = -EINVAL; + ret = -EINVAL; ibdev_err(ibdev, "failed to check mtr%u end %u + %u, max %u.\n", i, r->offset, r->count, page_cnt); - return err; + return ret; } - err = mtr_map_region(hr_dev, mtr, &pages[r->offset], r); - if (err) { + ret = mtr_map_region(hr_dev, mtr, r, &pages[r->offset], + page_cnt - mapped_cnt); + if (ret < 0) { ibdev_err(ibdev, "failed to map mtr%u offset %u, ret = %d.\n", - i, r->offset, err); - return err; + i, r->offset, ret); + return ret; } + mapped_cnt += ret; + ret = 0; } - return 0; + if (mapped_cnt < page_cnt) { + ret = -ENOBUFS; + ibdev_err(ibdev, "failed to map mtr pages count: %u < %u.\n", + mapped_cnt, page_cnt); + } + + return ret; } int hns_roce_mtr_find(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, |