[PATCH 21/21] drm/amdgpu: add PASID mapping for GFX v8

[zhoucm1@xxxxxxx (Chunming Zhou)]

patch #19, #20, #21 are Reviewed-by: Chunming Zhou <david1.zhou at amd.com>


On 2018å¹´01æ??17æ?¥ 03:40, Christian König wrote:
> This way we can see the PASID in VM faults.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 12 +++++++++++-
>   1 file changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index f7bcfa53eff0..2efbecf486c5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -33,6 +33,7 @@
>   #include "vega10_enum.h"
>   #include "mmhub/mmhub_1_0_offset.h"
>   #include "athub/athub_1_0_offset.h"
> +#include "oss/osssys_4_0_offset.h"
>   
>   #include "soc15.h"
>   #include "soc15_common.h"
> @@ -369,10 +370,12 @@ static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
>   					    unsigned vmid, unsigned pasid,
>   					    uint64_t pd_addr)
>   {
> -	struct amdgpu_vmhub *hub = &ring->adev->vmhub[ring->funcs->vmhub];
> +	struct amdgpu_device *adev = ring->adev;
> +	struct amdgpu_vmhub *hub = &adev->vmhub[ring->funcs->vmhub];
>   	uint32_t req = gmc_v9_0_get_invalidate_req(vmid);
>   	uint64_t flags = AMDGPU_PTE_VALID;
>   	unsigned eng = ring->vm_inv_eng;
> +	uint32_t reg;
>   
>   	amdgpu_gmc_get_vm_pde(ring->adev, -1, &pd_addr, &flags);
>   	pd_addr |= flags;
> @@ -383,6 +386,13 @@ static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
>   	amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_hi32 + (2 * vmid),
>   			      upper_32_bits(pd_addr));
>   
> +	if (ring->funcs->vmhub == AMDGPU_GFXHUB)
> +		reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_VMID_0_LUT) + vmid;
> +	else
> +		reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_VMID_0_LUT_MM) + vmid;
> +
> +	amdgpu_ring_emit_wreg(ring, reg, pasid);
> +
>   	amdgpu_ring_emit_wreg(ring, hub->vm_inv_eng0_req + eng, req);
>   
>   	return pd_addr;