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drm/amdgpu/gmc9: Adjust GART and AGP location with xgmi offset (v2) 

On hives with xgmi enabled, the fb_location aperture is a size
which defines the total framebuffer size of all nodes in the
hive.  Each GPU in the hive has the same view via the fb_location
aperture.  GPU0 starts at offset (0 * segment size),
GPU1 starts at offset (1 * segment size), etc.

For access to local vram on each GPU, we need to take this offset into
account. This including on setting up GPUVM page table and GART table

v2: squash in "drm/amdgpu: Init correct fb region for none XGMI configuration"

Acked-by: Huang Rui <ray.huang@amd.com>
Acked-by: Slava Abramov <slava.abramov@amd.com>
Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
This commit is contained in:
Alex Deucher 2018-06-19 16:11:56 -05:00
parent bf0a60b78b
commit 6fdd68b14a
5 changed files with 39 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
View File

@ -121,6 +121,11 @@ void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
if (limit && limit < mc->real_vram_size)
mc->real_vram_size = limit;
if (mc->xgmi.num_physical_nodes == 0) {
mc->fb_start = mc->vram_start;
mc->fb_end = mc->vram_end;
}
dev_info(adev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
mc->mc_vram_size >> 20, mc->vram_start,
mc->vram_end, mc->real_vram_size >> 20);
@ -147,8 +152,8 @@ void amdgpu_gmc_gart_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc)
/* VCE doesn't like it when BOs cross a 4GB segment, so align
* the GART base on a 4GB boundary as well.
*/
size_bf = mc->vram_start;
size_af = adev->gmc.mc_mask + 1 - ALIGN(mc->vram_end + 1, four_gb);
size_bf = mc->fb_start;
size_af = adev->gmc.mc_mask + 1 - ALIGN(mc->fb_end + 1, four_gb);
if (mc->gart_size > max(size_bf, size_af)) {
dev_warn(adev->dev, "limiting GART\n");
@ -184,23 +189,23 @@ void amdgpu_gmc_agp_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc)
const uint64_t sixteen_gb_mask = ~(sixteen_gb - 1);
u64 size_af, size_bf;
if (mc->vram_start > mc->gart_start) {
size_bf = (mc->vram_start & sixteen_gb_mask) -
if (mc->fb_start > mc->gart_start) {
size_bf = (mc->fb_start & sixteen_gb_mask) -
ALIGN(mc->gart_end + 1, sixteen_gb);
size_af = mc->mc_mask + 1 - ALIGN(mc->vram_end + 1, sixteen_gb);
size_af = mc->mc_mask + 1 - ALIGN(mc->fb_end + 1, sixteen_gb);
} else {
size_bf = mc->vram_start & sixteen_gb_mask;
size_bf = mc->fb_start & sixteen_gb_mask;
size_af = (mc->gart_start & sixteen_gb_mask) -
ALIGN(mc->vram_end + 1, sixteen_gb);
ALIGN(mc->fb_end + 1, sixteen_gb);
}
if (size_bf > size_af) {
mc->agp_start = mc->vram_start > mc->gart_start ?
mc->agp_start = mc->fb_start > mc->gart_start ?
mc->gart_end + 1 : 0;
mc->agp_size = size_bf;
} else {
mc->agp_start = (mc->vram_start > mc->gart_start ?
mc->vram_end : mc->gart_end) + 1,
mc->agp_start = (mc->fb_start > mc->gart_start ?
mc->fb_end : mc->gart_end) + 1,
mc->agp_size = size_af;
}

8
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
View File

@ -114,6 +114,14 @@ struct amdgpu_gmc {
u64 gart_end;
u64 vram_start;
u64 vram_end;
/* FB region , it's same as local vram region in single GPU, in XGMI
* configuration, this region covers all GPUs in the same hive ,
* each GPU in the hive has the same view of this FB region .
* GPU0's vram starts at offset (0 * segment size) ,
* GPU1 starts at offset (1 * segment size), etc.
*/
u64 fb_start;
u64 fb_end;
unsigned vram_width;
u64 real_vram_size;
int vram_mtrr;

3
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.c
View File

@ -44,6 +44,9 @@ int gfxhub_v1_1_get_xgmi_info(struct amdgpu_device *adev)
REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, PF_LFB_REGION);
if (adev->gmc.xgmi.physical_node_id > 3)
return -EINVAL;
adev->gmc.xgmi.node_segment_size = REG_GET_FIELD(
RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_SIZE),
MC_VM_XGMI_LFB_SIZE, PF_LFB_SIZE) << 24;
}
return 0;

6
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
View File

@ -771,12 +771,18 @@ static void gmc_v9_0_vram_gtt_location(struct amdgpu_device *adev,
u64 base = 0;
if (!amdgpu_sriov_vf(adev))
base = mmhub_v1_0_get_fb_location(adev);
/* add the xgmi offset of the physical node */
base += adev->gmc.xgmi.physical_node_id * adev->gmc.xgmi.node_segment_size;
amdgpu_gmc_vram_location(adev, &adev->gmc, base);
amdgpu_gmc_gart_location(adev, mc);
if (!amdgpu_sriov_vf(adev))
amdgpu_gmc_agp_location(adev, mc);
/* base offset of vram pages */
adev->vm_manager.vram_base_offset = gfxhub_v1_0_get_mc_fb_offset(adev);
/* XXX: add the xgmi offset of the physical node? */
adev->vm_manager.vram_base_offset +=
adev->gmc.xgmi.physical_node_id * adev->gmc.xgmi.node_segment_size;
}
/**

7
drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
View File

@ -38,10 +38,17 @@
u64 mmhub_v1_0_get_fb_location(struct amdgpu_device *adev)
{
u64 base = RREG32_SOC15(MMHUB, 0, mmMC_VM_FB_LOCATION_BASE);
u64 top = RREG32_SOC15(MMHUB, 0, mmMC_VM_FB_LOCATION_TOP);
base &= MC_VM_FB_LOCATION_BASE__FB_BASE_MASK;
base <<= 24;
top &= MC_VM_FB_LOCATION_TOP__FB_TOP_MASK;
top <<= 24;
adev->gmc.fb_start = base;
adev->gmc.fb_end = top;
return base;
}