@@ -819,6 +819,7 @@ repoll:
break;
case MLX4_OPCODE_FMR:
wc->opcode = IB_WC_FAST_REG_MR;
+ /* TODO: wc->opcode = IB_WC_REG_MR; */
break;
case MLX4_OPCODE_LOCAL_INVAL:
wc->opcode = IB_WC_LOCAL_INV;
@@ -2247,6 +2247,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr;
ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
ibdev->ib_dev.alloc_mr = mlx4_ib_alloc_mr;
+ ibdev->ib_dev.map_mr_sg = mlx4_ib_map_mr_sg;
ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
@@ -131,6 +131,10 @@ struct mlx4_ib_cq {
struct mlx4_ib_mr {
struct ib_mr ibmr;
+ __be64 *pages;
+ dma_addr_t page_map;
+ u32 npages;
+ u32 max_pages;
struct mlx4_mr mmr;
struct ib_umem *umem;
};
@@ -706,6 +710,9 @@ int mlx4_ib_dealloc_mw(struct ib_mw *mw);
struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
+int mlx4_ib_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ unsigned int sg_nents);
struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
int page_list_len);
void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
@@ -59,7 +59,7 @@ struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc)
struct mlx4_ib_mr *mr;
int err;
- mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
if (!mr)
return ERR_PTR(-ENOMEM);
@@ -140,7 +140,7 @@ struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
int err;
int n;
- mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
if (!mr)
return ERR_PTR(-ENOMEM);
@@ -271,11 +271,53 @@ release_mpt_entry:
return err;
}
+static int
+mlx4_alloc_priv_pages(struct ib_device *device,
+ struct mlx4_ib_mr *mr,
+ int max_pages)
+{
+ int size = max_pages * sizeof(u64);
+ int ret;
+
+ mr->pages = kzalloc(size, GFP_KERNEL);
+ if (!mr->pages)
+ return -ENOMEM;
+
+ mr->page_map = dma_map_single(device->dma_device, mr->pages,
+ size, DMA_TO_DEVICE);
+
+ if (dma_mapping_error(device->dma_device, mr->page_map)) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ return 0;
+err:
+ kfree(mr->pages);
+ return ret;
+}
+
+static void
+mlx4_free_priv_pages(struct mlx4_ib_mr *mr)
+{
+ struct ib_device *device = mr->ibmr.device;
+ int size = mr->max_pages * sizeof(u64);
+
+ if (mr->pages) {
+ dma_unmap_single(device->dma_device, mr->page_map,
+ size, DMA_TO_DEVICE);
+ kfree(mr->pages);
+ mr->pages = NULL;
+ }
+}
+
int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
{
struct mlx4_ib_mr *mr = to_mmr(ibmr);
int ret;
+ mlx4_free_priv_pages(mr);
+
ret = mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr);
if (ret)
return ret;
@@ -362,7 +404,7 @@ struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd,
max_num_sg > MLX4_MAX_FAST_REG_PAGES)
return ERR_PTR(-EINVAL);
- mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
if (!mr)
return ERR_PTR(-ENOMEM);
@@ -371,18 +413,25 @@ struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd,
if (err)
goto err_free;
+ err = mlx4_alloc_priv_pages(pd->device, mr, max_num_sg);
+ if (err)
+ goto err_free_mr;
+
+ mr->max_pages = max_num_sg;
+
err = mlx4_mr_enable(dev->dev, &mr->mmr);
if (err)
- goto err_mr;
+ goto err_free_pl;
mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
mr->umem = NULL;
return &mr->ibmr;
-err_mr:
+err_free_pl:
+ mlx4_free_priv_pages(mr);
+err_free_mr:
(void) mlx4_mr_free(dev->dev, &mr->mmr);
-
err_free:
kfree(mr);
return ERR_PTR(err);
@@ -528,3 +577,37 @@ int mlx4_ib_fmr_dealloc(struct ib_fmr *ibfmr)
return err;
}
+
+static int mlx4_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct mlx4_ib_mr *mr = to_mmr(ibmr);
+
+ if (unlikely(mr->npages == mr->max_pages))
+ return -ENOMEM;
+
+ mr->pages[mr->npages++] = cpu_to_be64(addr | MLX4_MTT_FLAG_PRESENT);
+
+ return 0;
+}
+
+int mlx4_ib_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ unsigned int sg_nents)
+{
+ struct mlx4_ib_mr *mr = to_mmr(ibmr);
+ int rc;
+
+ mr->npages = 0;
+
+ ib_dma_sync_single_for_cpu(ibmr->device, mr->page_map,
+ sizeof(u64) * mr->max_pages,
+ DMA_TO_DEVICE);
+
+ rc = ib_sg_to_pages(ibmr, sg, sg_nents, mlx4_set_page);
+
+ ib_dma_sync_single_for_device(ibmr->device, mr->page_map,
+ sizeof(u64) * mr->max_pages,
+ DMA_TO_DEVICE);
+
+ return rc;
+}
@@ -112,6 +112,7 @@ static const __be32 mlx4_ib_opcode[] = {
[IB_WR_SEND_WITH_INV] = cpu_to_be32(MLX4_OPCODE_SEND_INVAL),
[IB_WR_LOCAL_INV] = cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL),
[IB_WR_FAST_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR),
+ [IB_WR_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR),
[IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_CS),
[IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_FA),
[IB_WR_BIND_MW] = cpu_to_be32(MLX4_OPCODE_BIND_MW),
@@ -2405,6 +2406,22 @@ static __be32 convert_access(int acc)
cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_READ);
}
+static void set_reg_seg(struct mlx4_wqe_fmr_seg *fseg,
+ struct ib_reg_wr *wr)
+{
+ struct mlx4_ib_mr *mr = to_mmr(wr->mr);
+
+ fseg->flags = convert_access(wr->access);
+ fseg->mem_key = cpu_to_be32(wr->key);
+ fseg->buf_list = cpu_to_be64(mr->page_map);
+ fseg->start_addr = cpu_to_be64(mr->ibmr.iova);
+ fseg->reg_len = cpu_to_be64(mr->ibmr.length);
+ fseg->offset = 0; /* XXX -- is this just for ZBVA? */
+ fseg->page_size = cpu_to_be32(ilog2(mr->ibmr.page_size));
+ fseg->reserved[0] = 0;
+ fseg->reserved[1] = 0;
+}
+
static void set_fmr_seg(struct mlx4_wqe_fmr_seg *fseg,
struct ib_fast_reg_wr *wr)
{
@@ -2766,6 +2783,14 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
size += sizeof (struct mlx4_wqe_fmr_seg) / 16;
break;
+ case IB_WR_REG_MR:
+ ctrl->srcrb_flags |=
+ cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
+ set_reg_seg(wqe, reg_wr(wr));
+ wqe += sizeof(struct mlx4_wqe_fmr_seg);
+ size += sizeof(struct mlx4_wqe_fmr_seg) / 16;
+ break;
+
case IB_WR_BIND_MW:
ctrl->srcrb_flags |=
cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);