[PATCH] drm/amdgpu: Add stolen reserved memory for MI25 SRIOV.

[Yongqiang Sun]

MI25 SRIOV guest driver loading failed due to allocate
memory overlaps with private memory area.
Add below change to fix the issue:
1. Allocate stolen reserved memory for MI25 SRIOV specifically to avoid
the memory overlap.
2. Move allocate reserve allocation to vbios allocation since both the
two functions are doing similar asic type check and no need to have
separate functions.

Signed-off-by: Yongqiang Sun <yongqiang.sun at amd.com>
Change-Id: I142127513047a3e81573eb983c510d763b548a24
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 38 ++++++++++++-------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h |  1 -
 drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c  |  1 -
 3 files changed, 19 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index 7c2a9555b7cc..7e4d298e8df8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -626,6 +626,13 @@ void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev)
 {
 	unsigned size;
 
+	/*
+	 * Some ASICs need to reserve a region of video memory to avoid access
+	 * from driver
+	 */
+	adev->mman.stolen_reserved_offset = 0;
+	adev->mman.stolen_reserved_size = 0;
+
 	/*
 	 * TODO:
 	 * Currently there is a bug where some memory client outside
@@ -636,10 +643,22 @@ void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev)
 	 */
 	switch (adev->asic_type) {
 	case CHIP_VEGA10:
+		adev->mman.keep_stolen_vga_memory = true;
+		if (amdgpu_sriov_vf(adev)) {
+			adev->mman.stolen_reserved_offset = 0x100000;
+			adev->mman.stolen_reserved_size = 0x600000;
+		}
+		break;
 	case CHIP_RAVEN:
 	case CHIP_RENOIR:
 		adev->mman.keep_stolen_vga_memory = true;
 		break;
+	case CHIP_YELLOW_CARP:
+		if (amdgpu_discovery == 0) {
+			adev->mman.stolen_reserved_offset = 0x1ffb0000;
+			adev->mman.stolen_reserved_size = 64 * PAGE_SIZE;
+		}
+		break;
 	default:
 		adev->mman.keep_stolen_vga_memory = false;
 		break;
@@ -760,25 +779,6 @@ uint64_t amdgpu_gmc_vram_cpu_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo
 	return amdgpu_bo_gpu_offset(bo) - adev->gmc.vram_start + adev->gmc.aper_base;
 }
 
-void amdgpu_gmc_get_reserved_allocation(struct amdgpu_device *adev)
-{
-	/* Some ASICs need to reserve a region of video memory to avoid access
-	 * from driver */
-	adev->mman.stolen_reserved_offset = 0;
-	adev->mman.stolen_reserved_size = 0;
-
-	switch (adev->asic_type) {
-	case CHIP_YELLOW_CARP:
-		if (amdgpu_discovery == 0) {
-			adev->mman.stolen_reserved_offset = 0x1ffb0000;
-			adev->mman.stolen_reserved_size = 64 * PAGE_SIZE;
-		}
-		break;
-	default:
-		break;
-	}
-}
-
 int amdgpu_gmc_vram_checking(struct amdgpu_device *adev)
 {
 	struct amdgpu_bo *vram_bo = NULL;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
index 93505bb0a36c..032b0313f277 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
@@ -331,7 +331,6 @@ amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type,
 			      bool enable);
 
 void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev);
-void amdgpu_gmc_get_reserved_allocation(struct amdgpu_device *adev);
 
 void amdgpu_gmc_init_pdb0(struct amdgpu_device *adev);
 uint64_t amdgpu_gmc_vram_mc2pa(struct amdgpu_device *adev, uint64_t mc_addr);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index f60b7bd4dbf5..3c1d440824a7 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -948,7 +948,6 @@ static int gmc_v10_0_sw_init(void *handle)
 		return r;
 
 	amdgpu_gmc_get_vbios_allocations(adev);
-	amdgpu_gmc_get_reserved_allocation(adev);
 
 	/* Memory manager */
 	r = amdgpu_bo_init(adev);
-- 
2.25.1