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drm/amdgpu/sriov: skip programing some regs with new L1 policy

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With new L1 policy, some regs are blocked at guest and they are
programed at host side. So skip programing the regs under sriov.

the regs are:
GCMC_VM_FB_LOCATION_TOP
GCMC_VM_FB_LOCATION_BASE
MMMC_VM_FB_LOCATION_TOP
MMMC_VM_FB_LOCATION_BASE
GCMC_VM_SYSTEM_APERTURE_HIGH_ADDR
GCMC_VM_SYSTEM_APERTURE_LOW_ADDR
MMMC_VM_SYSTEM_APERTURE_HIGH_ADDR
MMMC_VM_SYSTEM_APERTURE_LOW_ADDR
HDP_NONSURFACE_BASE
HDP_NONSURFACE_BASE_HI
GCMC_VM_AGP_TOP
GCMC_VM_AGP_BOT
GCMC_VM_AGP_BASE

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Tiecheng Zhou <Tiecheng.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tiecheng Zhou
2020-03-02 14:50:03 +08:00
committed by Alex Deucher
parent bcc5042a22
commit 8a43cf88b7
2 changed files with 35 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c
View File

@@ -81,6 +81,12 @@ static void gfxhub_v2_0_init_system_aperture_regs(struct amdgpu_device *adev)
{ {
uint64_t value; uint64_t value;
if (!amdgpu_sriov_vf(adev)) {
/*
* the new L1 policy will block SRIOV guest from writing
* these regs, and they will be programed at host.
* so skip programing these regs.
*/
/* Disable AGP. */ /* Disable AGP. */
WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_BASE, 0); WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_BASE, 0);
WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_TOP, 0); WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_TOP, 0);
@@ -99,6 +105,7 @@ static void gfxhub_v2_0_init_system_aperture_regs(struct amdgpu_device *adev)
(u32)(value >> 12)); (u32)(value >> 12));
WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB, WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB,
(u32)(value >> 44)); (u32)(value >> 44));
}
/* Program "protection fault". */ /* Program "protection fault". */
WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32, WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32,
@@ -260,18 +267,6 @@ static void gfxhub_v2_0_program_invalidation(struct amdgpu_device *adev)
int gfxhub_v2_0_gart_enable(struct amdgpu_device *adev) int gfxhub_v2_0_gart_enable(struct amdgpu_device *adev)
{ {
if (amdgpu_sriov_vf(adev)) {
/*
* GCMC_VM_FB_LOCATION_BASE/TOP is NULL for VF, becuase they are
* VF copy registers so vbios post doesn't program them, for
* SRIOV driver need to program them
*/
WREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_BASE,
adev->gmc.vram_start >> 24);
WREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_TOP,
adev->gmc.vram_end >> 24);
}
/* GART Enable. */ /* GART Enable. */
gfxhub_v2_0_init_gart_aperture_regs(adev); gfxhub_v2_0_init_gart_aperture_regs(adev);
gfxhub_v2_0_init_system_aperture_regs(adev); gfxhub_v2_0_init_system_aperture_regs(adev);

19
drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c
View File

@@ -72,11 +72,18 @@ static void mmhub_v2_0_init_system_aperture_regs(struct amdgpu_device *adev)
WREG32_SOC15(MMHUB, 0, mmMMMC_VM_AGP_TOP, 0); WREG32_SOC15(MMHUB, 0, mmMMMC_VM_AGP_TOP, 0);
WREG32_SOC15(MMHUB, 0, mmMMMC_VM_AGP_BOT, 0x00FFFFFF); WREG32_SOC15(MMHUB, 0, mmMMMC_VM_AGP_BOT, 0x00FFFFFF);
if (!amdgpu_sriov_vf(adev)) {
/*
* the new L1 policy will block SRIOV guest from writing
* these regs, and they will be programed at host.
* so skip programing these regs.
*/
/* Program the system aperture low logical page number. */ /* Program the system aperture low logical page number. */
WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_LOW_ADDR, WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_LOW_ADDR,
adev->gmc.vram_start >> 18); adev->gmc.vram_start >> 18);
WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_HIGH_ADDR, WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
adev->gmc.vram_end >> 18); adev->gmc.vram_end >> 18);
}
/* Set default page address. */ /* Set default page address. */
value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start + value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start +
@@ -247,18 +254,6 @@ static void mmhub_v2_0_program_invalidation(struct amdgpu_device *adev)
int mmhub_v2_0_gart_enable(struct amdgpu_device *adev) int mmhub_v2_0_gart_enable(struct amdgpu_device *adev)
{ {
if (amdgpu_sriov_vf(adev)) {
/*
* MMMC_VM_FB_LOCATION_BASE/TOP is NULL for VF, becuase they are
* VF copy registers so vbios post doesn't program them, for
* SRIOV driver need to program them
*/
WREG32_SOC15(MMHUB, 0, mmMMMC_VM_FB_LOCATION_BASE,
adev->gmc.vram_start >> 24);
WREG32_SOC15(MMHUB, 0, mmMMMC_VM_FB_LOCATION_TOP,
adev->gmc.vram_end >> 24);
}
/* GART Enable. */ /* GART Enable. */
mmhub_v2_0_init_gart_aperture_regs(adev); mmhub_v2_0_init_gart_aperture_regs(adev);
mmhub_v2_0_init_system_aperture_regs(adev); mmhub_v2_0_init_system_aperture_regs(adev);