On Thu, Oct 28, 2021 at 06:56:40PM +0800, Wenpeng Liang wrote:
> From: Chengchang Tang <tangchengchang@xxxxxxxxxx>
>
> Add a new implementation for mmap by using the new mmap entry API.
>
> Signed-off-by: Chengchang Tang <tangchengchang@xxxxxxxxxx>
> Signed-off-by: Yixing Liu <liuyixing1@xxxxxxxxxx>
> Signed-off-by: Wenpeng Liang <liangwenpeng@xxxxxxxxxx>
> ---
> drivers/infiniband/hw/hns/hns_roce_device.h | 23 ++++
> drivers/infiniband/hw/hns/hns_roce_main.c | 142 ++++++++++++++++----
> include/rdma/ib_verbs.h | 8 ++
> 3 files changed, 146 insertions(+), 27 deletions(-)
Applied to for-next, thanks
> +static int hns_roce_mmap(struct ib_ucontext *uctx, struct vm_area_struct *vma)
> {
> - struct hns_roce_dev *hr_dev = to_hr_dev(context->device);
> -
> - switch (vma->vm_pgoff) {
> - case 0:
> - return rdma_user_mmap_io(context, vma,
> - to_hr_ucontext(context)->uar.pfn,
> - PAGE_SIZE,
> - pgprot_noncached(vma->vm_page_prot),
> - NULL);
> -
> - /* vm_pgoff: 1 -- TPTR */
> - case 1:
> - if (!hr_dev->tptr_dma_addr || !hr_dev->tptr_size)
> - return -EINVAL;
> - /*
> - * FIXME: using io_remap_pfn_range on the dma address returned
> - * by dma_alloc_coherent is totally wrong.
> - */
> - return rdma_user_mmap_io(context, vma,
> - hr_dev->tptr_dma_addr >> PAGE_SHIFT,
> - hr_dev->tptr_size,
> - vma->vm_page_prot,
> - NULL);
> + struct hns_roce_dev *hr_dev = to_hr_dev(uctx->device);
> + struct ib_device *ibdev = &hr_dev->ib_dev;
These two variables are unused, I deleted them
Jason
