Re: [PATCH 4/5] accel/ivpu: Rename and cleanup MMU600 page tables

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 5/18/2023 7:16 AM, Stanislaw Gruszka wrote:
From: Karol Wachowski <karol.wachowski@xxxxxxxxxxxxxxx>

Simplify and unify naming convention in MMU600 page tables
configuration.

All DMA addresses in page tables directly accessed by VPU are called
with _dma sufix and all CPU pointers to those page tables have _ptr
sufix.

Base pointers used to do a page walk on the CPU have corresponding
names:

  pud_ptrs (pointers used to get access to PUD DMA)
  pmd_ptrs (pointers used to get access to PMD DMA)
  pte_ptrs (pointers used to get access to PTE DMA)

with the following convention:

  u64 *pud_dma_ptr = pud_ptrs[pgd_idx];
  *pud_dma_ptr = pud_dma;

  u64 *pmd_dma_ptr = pmd_ptrs[pgd_idx][pud_idx];
  *pmd_dma_ptr = pmd_dma;

  u64 *pte_dma_ptr = pte_ptrs[pgd_idx][pud_idx][pmd_idx];
  *pte_dma_ptr = pte_dma;

On the way change to coherent dma allocation, _wc is only valid on ARM
and was used by mistake.

Signed-off-by: Karol Wachowski <karol.wachowski@xxxxxxxxxxxxxxx>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@xxxxxxxxxxxxxxx>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@xxxxxxxxxxxxxxx>

Reviewed-by: Jeffrey Hugo <quic_jhugo@xxxxxxxxxxx>



[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux