<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> [AMD Public Use] <div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> Acked-by: Alex Deucher <alexander.deucher@amd.com> </div> <div id="appendonsend"></div> <div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> </div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="divRplyFwdMsg" dir="ltr">From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Zhou, Tiecheng <Tiecheng.Zhou@amd.com> Sent: Tuesday, March 3, 2020 6:04 AM To: Zhou, Tiecheng <Tiecheng.Zhou@amd.com>; amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org> Subject: RE: [PATCH] drm/amdgpu/sriov: skip programing some regs with new L1 policy <div> </div> </div> <div class="BodyFragment"> <div class="PlainText">[AMD Official Use Only - Internal Distribution Only] Ping -----Original Message----- From: Tiecheng Zhou <Tiecheng.Zhou@amd.com> Sent: Monday, March 2, 2020 3:08 PM To: amd-gfx@lists.freedesktop.org Cc: Zhou, Tiecheng <Tiecheng.Zhou@amd.com> Subject: [PATCH] drm/amdgpu/sriov: skip programing some regs with new L1 policy 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 Signed-off-by: Tiecheng Zhou <Tiecheng.Zhou@amd.com> --- drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c | 55 +++++++++++------------- drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c | 29 ++++++------- 2 files changed, 37 insertions(+), 47 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c index e0654a216ab5..cc866c367939 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c @@ -81,24 +81,31 @@ static void gfxhub_v2_0_init_system_aperture_regs(struct amdgpu_device *adev) { uint64_t value; - /* Disable AGP. */ - 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_BOT, 0x00FFFFFF); - - /* Program the system aperture low logical page number. */ - WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_LOW_ADDR, - adev->gmc.vram_start >> 18); - WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_HIGH_ADDR, - adev->gmc.vram_end >> 18); - - /* Set default page address. */ - value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start - + adev->vm_manager.vram_base_offset; - WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB, - (u32)(value >> 12)); - WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB, - (u32)(value >> 44)); + 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. */ + 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_BOT, 0x00FFFFFF); + + /* Program the system aperture low logical page number. */ + WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_LOW_ADDR, + adev->gmc.vram_start >> 18); + WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_HIGH_ADDR, + adev->gmc.vram_end >> 18); + + /* Set default page address. */ + value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start + + adev->vm_manager.vram_base_offset; + WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB, + (u32)(value >> 12)); + WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB, + (u32)(value >> 44)); + } /* Program "protection fault". */ 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) { - 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. */ gfxhub_v2_0_init_gart_aperture_regs(adev); gfxhub_v2_0_init_system_aperture_regs(adev); diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c index bde189680521..fb3f228458e5 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c @@ -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_BOT, 0x00FFFFFF); - /* Program the system aperture low logical page number. */ - WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_LOW_ADDR, - adev->gmc.vram_start >> 18); - WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_HIGH_ADDR, - adev->gmc.vram_end >> 18); + 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. */ + WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_LOW_ADDR, + adev->gmc.vram_start >> 18); + WREG32_SOC15(MMHUB, 0, mmMMMC_VM_SYSTEM_APERTURE_HIGH_ADDR, + adev->gmc.vram_end >> 18); + } /* Set default page address. */ 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) { - 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. */ mmhub_v2_0_init_gart_aperture_regs(adev); mmhub_v2_0_init_system_aperture_regs(adev); -- 2.17.1 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org <a href="https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=02%7C01%7Calexander.deucher%40amd.com%7C5c67ab87ec474567746608d7bf62b5ce%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637188303458046365&sdata=xQ%2Fx7i5LhvDFFZ%2BOJzhJYPr0TbHLpUW4NrbBxvcvyaE%3D&reserved=0">https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=02%7C01%7Calexander.deucher%40amd.com%7C5c67ab87ec474567746608d7bf62b5ce%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637188303458046365&sdata=xQ%2Fx7i5LhvDFFZ%2BOJzhJYPr0TbHLpUW4NrbBxvcvyaE%3D&reserved=0</a> </div> </div> </div> </body> </html>