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PCI: rockchip: dw_ep: mmap normal_wc for bar2 mapped memory

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Bar2 mapped memory resource do not have outbound configured and
can be used as general memory, using write buffer to improve data
transform rate.

Change-Id: I0b1e86ec47432e1cd13ee10db4895eca071db45d
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
This commit is contained in:
Jon Lin
2023-04-13 11:10:30 +08:00
committed by Tao Huang
parent 3155b043cf
commit 0334628275
1 changed files with 5 additions and 1 deletions
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drivers/pci/controller/dwc/pcie-dw-ep-rockchip.c
+5 -1
View File
@@ -1056,7 +1056,11 @@ static int pcie_ep_mmap(struct file *file, struct vm_area_struct *vma)
vma->vm_flags |= VM_IO;
vma->vm_flags |= (VM_DONTEXPAND | VM_DONTDUMP);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
if (rockchip->cur_mmap_res == PCIE_EP_MMAP_RESOURCE_BAR2)
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
else
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
err = remap_pfn_range(vma, vma->vm_start,
__phys_to_pfn(addr),