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path: root/drivers/infiniband/hw/mlx5/main.c
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Diffstat (limited to 'drivers/infiniband/hw/mlx5/main.c')
-rw-r--r--drivers/infiniband/hw/mlx5/main.c135
1 files changed, 88 insertions, 47 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 5ac24bce6e77..97f32a03e456 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -2264,58 +2264,90 @@ static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vm
return 0;
}
-struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev,
- struct ib_ucontext *context,
- struct ib_dm_alloc_attr *attr,
- struct uverbs_attr_bundle *attrs)
+static int handle_alloc_dm_memic(struct ib_ucontext *ctx,
+ struct mlx5_ib_dm *dm,
+ struct ib_dm_alloc_attr *attr,
+ struct uverbs_attr_bundle *attrs)
{
- u64 act_size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE);
- struct mlx5_memic *memic = &to_mdev(ibdev)->memic;
- phys_addr_t memic_addr;
- struct mlx5_ib_dm *dm;
+ struct mlx5_dm *dm_db = &to_mdev(ctx->device)->dm;
u64 start_offset;
u32 page_idx;
int err;
- dm = kzalloc(sizeof(*dm), GFP_KERNEL);
- if (!dm)
- return ERR_PTR(-ENOMEM);
-
- mlx5_ib_dbg(to_mdev(ibdev), "alloc_memic req: user_length=0x%llx act_length=0x%llx log_alignment=%d\n",
- attr->length, act_size, attr->alignment);
+ dm->size = roundup(attr->length, MLX5_MEMIC_BASE_SIZE);
- err = mlx5_cmd_alloc_memic(memic, &memic_addr,
- act_size, attr->alignment);
+ err = mlx5_cmd_alloc_memic(dm_db, &dm->dev_addr,
+ dm->size, attr->alignment);
if (err)
- goto err_free;
+ return err;
- start_offset = memic_addr & ~PAGE_MASK;
- page_idx = (memic_addr - memic->dev->bar_addr -
- MLX5_CAP64_DEV_MEM(memic->dev, memic_bar_start_addr)) >>
+ page_idx = (dm->dev_addr - pci_resource_start(dm_db->dev->pdev, 0) -
+ MLX5_CAP64_DEV_MEM(dm_db->dev, memic_bar_start_addr)) >>
PAGE_SHIFT;
err = uverbs_copy_to(attrs,
- MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET,
- &start_offset, sizeof(start_offset));
+ MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX,
+ &page_idx, sizeof(page_idx));
if (err)
goto err_dealloc;
+ start_offset = dm->dev_addr & ~PAGE_MASK;
err = uverbs_copy_to(attrs,
- MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX,
- &page_idx, sizeof(page_idx));
+ MLX5_IB_ATTR_ALLOC_DM_RESP_START_OFFSET,
+ &start_offset, sizeof(start_offset));
if (err)
goto err_dealloc;
- bitmap_set(to_mucontext(context)->dm_pages, page_idx,
- DIV_ROUND_UP(act_size, PAGE_SIZE));
+ bitmap_set(to_mucontext(ctx)->dm_pages, page_idx,
+ DIV_ROUND_UP(dm->size, PAGE_SIZE));
+
+ return 0;
+
+err_dealloc:
+ mlx5_cmd_dealloc_memic(dm_db, dm->dev_addr, dm->size);
+
+ return err;
+}
+
+struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_dm_alloc_attr *attr,
+ struct uverbs_attr_bundle *attrs)
+{
+ struct mlx5_ib_dm *dm;
+ enum mlx5_ib_uapi_dm_type type;
+ int err;
+
+ err = uverbs_get_const_default(&type, attrs,
+ MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE,
+ MLX5_IB_UAPI_DM_TYPE_MEMIC);
+ if (err)
+ return ERR_PTR(err);
+
+ mlx5_ib_dbg(to_mdev(ibdev), "alloc_dm req: dm_type=%d user_length=0x%llx log_alignment=%d\n",
+ type, attr->length, attr->alignment);
+
+ dm = kzalloc(sizeof(*dm), GFP_KERNEL);
+ if (!dm)
+ return ERR_PTR(-ENOMEM);
+
+ dm->type = type;
+
+ switch (type) {
+ case MLX5_IB_UAPI_DM_TYPE_MEMIC:
+ err = handle_alloc_dm_memic(context, dm,
+ attr,
+ attrs);
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ }
- dm->dev_addr = memic_addr;
+ if (err)
+ goto err_free;
return &dm->ibdm;
-err_dealloc:
- mlx5_cmd_dealloc_memic(memic, memic_addr,
- act_size);
err_free:
kfree(dm);
return ERR_PTR(err);
@@ -2323,25 +2355,31 @@ err_free:
int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs)
{
- struct mlx5_memic *memic = &to_mdev(ibdm->device)->memic;
+ struct mlx5_dm *dm_db = &to_mdev(ibdm->device)->dm;
struct mlx5_ib_dm *dm = to_mdm(ibdm);
- u64 act_size = roundup(dm->ibdm.length, MLX5_MEMIC_BASE_SIZE);
u32 page_idx;
int ret;
- ret = mlx5_cmd_dealloc_memic(memic, dm->dev_addr, act_size);
- if (ret)
- return ret;
+ switch (dm->type) {
+ case MLX5_IB_UAPI_DM_TYPE_MEMIC:
+ ret = mlx5_cmd_dealloc_memic(dm_db, dm->dev_addr, dm->size);
+ if (ret)
+ return ret;
- page_idx = (dm->dev_addr - memic->dev->bar_addr -
- MLX5_CAP64_DEV_MEM(memic->dev, memic_bar_start_addr)) >>
- PAGE_SHIFT;
- bitmap_clear(rdma_udata_to_drv_context(
- &attrs->driver_udata,
- struct mlx5_ib_ucontext,
- ibucontext)->dm_pages,
- page_idx,
- DIV_ROUND_UP(act_size, PAGE_SIZE));
+ page_idx = (dm->dev_addr -
+ pci_resource_start(dm_db->dev->pdev, 0) -
+ MLX5_CAP64_DEV_MEM(dm_db->dev,
+ memic_bar_start_addr)) >>
+ PAGE_SHIFT;
+ bitmap_clear(rdma_udata_to_drv_context(&attrs->driver_udata,
+ struct mlx5_ib_ucontext,
+ ibucontext)
+ ->dm_pages,
+ page_idx, DIV_ROUND_UP(dm->size, PAGE_SIZE));
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
kfree(dm);
@@ -5768,7 +5806,10 @@ ADD_UVERBS_ATTRIBUTES_SIMPLE(
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_ALLOC_DM_RESP_PAGE_INDEX,
UVERBS_ATTR_TYPE(u16),
- UA_MANDATORY));
+ UA_OPTIONAL),
+ UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_ALLOC_DM_REQ_TYPE,
+ enum mlx5_ib_uapi_dm_type,
+ UA_OPTIONAL));
ADD_UVERBS_ATTRIBUTES_SIMPLE(
mlx5_ib_flow_action,
@@ -5916,8 +5957,8 @@ static int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
INIT_LIST_HEAD(&dev->qp_list);
spin_lock_init(&dev->reset_flow_resource_lock);
- spin_lock_init(&dev->memic.memic_lock);
- dev->memic.dev = mdev;
+ spin_lock_init(&dev->dm.lock);
+ dev->dm.dev = mdev;
if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) {
err = init_srcu_struct(&dev->mr_srcu);
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-02 22:44:01 +0000