diff options
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 44 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 10 | ||||
| -rw-r--r-- | include/uapi/rdma/mlx5-abi.h | 18 |
3 files changed, 59 insertions, 13 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 91e6b42798e5..f282e281eff2 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -1579,6 +1579,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_ib_alloc_ucontext_req_v2 req = {}; struct mlx5_ib_alloc_ucontext_resp resp = {}; + struct mlx5_core_dev *mdev = dev->mdev; struct mlx5_ib_ucontext *context; struct mlx5_bfreg_info *bfregi; int ver; @@ -1706,6 +1707,12 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, resp.response_length += sizeof(resp.eth_min_inline); } + if (field_avail(typeof(resp), clock_info_versions, udata->outlen)) { + if (mdev->clock_info) + resp.clock_info_versions = BIT(MLX5_IB_CLOCK_INFO_V1); + resp.response_length += sizeof(resp.clock_info_versions); + } + /* * We don't want to expose information from the PCI bar that is located * after 4096 bytes, so if the arch only supports larger pages, let's @@ -1719,8 +1726,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, resp.hca_core_clock_offset = offsetof(struct mlx5_init_seg, internal_timer_h) % PAGE_SIZE; } - resp.response_length += sizeof(resp.hca_core_clock_offset) + - sizeof(resp.reserved2); + resp.response_length += sizeof(resp.hca_core_clock_offset); } if (field_avail(typeof(resp), log_uar_size, udata->outlen)) @@ -1959,6 +1965,38 @@ static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd) } } +static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev, + struct vm_area_struct *vma, + struct mlx5_ib_ucontext *context) +{ + phys_addr_t pfn; + int err; + + if (vma->vm_end - vma->vm_start != PAGE_SIZE) + return -EINVAL; + + if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1) + return -EOPNOTSUPP; + + if (vma->vm_flags & VM_WRITE) + return -EPERM; + + if (!dev->mdev->clock_info_page) + return -EOPNOTSUPP; + + pfn = page_to_pfn(dev->mdev->clock_info_page); + err = remap_pfn_range(vma, vma->vm_start, pfn, PAGE_SIZE, + vma->vm_page_prot); + if (err) + return err; + + mlx5_ib_dbg(dev, "mapped clock info at 0x%lx, PA 0x%llx\n", + vma->vm_start, + (unsigned long long)pfn << PAGE_SHIFT); + + return mlx5_ib_set_vma_data(vma, context); +} + static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, struct vm_area_struct *vma, struct mlx5_ib_ucontext *context) @@ -2121,6 +2159,8 @@ static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vm vma->vm_start, (unsigned long long)pfn << PAGE_SHIFT); break; + case MLX5_IB_MMAP_CLOCK_INFO: + return mlx5_ib_mmap_clock_info_page(dev, vma, context); default: return -EINVAL; diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 51228dfcfbe7..69a80f7512f0 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -70,16 +70,6 @@ enum { MLX5_IB_MMAP_CMD_MASK = 0xff, }; -enum mlx5_ib_mmap_cmd { - MLX5_IB_MMAP_REGULAR_PAGE = 0, - MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES = 1, - MLX5_IB_MMAP_WC_PAGE = 2, - MLX5_IB_MMAP_NC_PAGE = 3, - /* 5 is chosen in order to be compatible with old versions of libmlx5 */ - MLX5_IB_MMAP_CORE_CLOCK = 5, - MLX5_IB_MMAP_ALLOC_WC = 6, -}; - enum { MLX5_RES_SCAT_DATA32_CQE = 0x1, MLX5_RES_SCAT_DATA64_CQE = 0x2, diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h index 0299deed71a2..1111aa4e7c1e 100644 --- a/include/uapi/rdma/mlx5-abi.h +++ b/include/uapi/rdma/mlx5-abi.h @@ -124,7 +124,7 @@ struct mlx5_ib_alloc_ucontext_resp { __u8 cqe_version; __u8 cmds_supp_uhw; __u8 eth_min_inline; - __u8 reserved2; + __u8 clock_info_versions; __u64 hca_core_clock_offset; __u32 log_uar_size; __u32 num_uars_per_page; @@ -394,7 +394,23 @@ struct mlx5_ib_clock_info { __u64 overflow_period; }; +enum mlx5_ib_mmap_cmd { + MLX5_IB_MMAP_REGULAR_PAGE = 0, + MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES = 1, + MLX5_IB_MMAP_WC_PAGE = 2, + MLX5_IB_MMAP_NC_PAGE = 3, + /* 5 is chosen in order to be compatible with old versions of libmlx5 */ + MLX5_IB_MMAP_CORE_CLOCK = 5, + MLX5_IB_MMAP_ALLOC_WC = 6, + MLX5_IB_MMAP_CLOCK_INFO = 7, +}; + enum { MLX5_IB_CLOCK_INFO_KERNEL_UPDATING = 1, }; + +/* Bit indexes for the mlx5_alloc_ucontext_resp.clock_info_versions bitmap */ +enum { + MLX5_IB_CLOCK_INFO_V1 = 0, +}; #endif /* MLX5_ABI_USER_H */ |