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From ee27748f1527d1968dba0e6526e0213cf19228ed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Tue, 22 Jan 2019 15:44:54 -0500
Subject: [PATCH 1180/2940] drm/amdgpu: clean up memory/GDS/GWS/OA alignment
code
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
- move all adjustments into one place
- specify GDS/GWS/OA alignment in basic units of the heaps
- it looks like GDS alignment was 1 instead of 4
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Chaudhary Amit Kumar <Chaudharyamit.Kumar@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 7 -------
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 16 ++++++++++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 6 +++---
3 files changed, 15 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 270ca7438f34..254a7c6c5724 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -62,10 +62,6 @@ int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
memset(&bp, 0, sizeof(bp));
*obj = NULL;
- /* At least align on page size */
- if (alignment < PAGE_SIZE) {
- alignment = PAGE_SIZE;
- }
if ((initial_domain & AMDGPU_GEM_DOMAIN_DGMA) ||
(initial_domain & AMDGPU_GEM_DOMAIN_DGMA_IMPORT)) {
@@ -275,9 +271,6 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
return -EINVAL;
}
flags |= AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
- /* GDS allocations must be DW aligned */
- if (args->in.domains & AMDGPU_GEM_DOMAIN_GDS)
- size = ALIGN(size, 4);
}
if (flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index b308751d9e16..b55e5d3d6198 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -447,12 +447,20 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
size_t acc_size;
int r;
- page_align = roundup(bp->byte_align, PAGE_SIZE) >> PAGE_SHIFT;
- if (bp->domain & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS |
- AMDGPU_GEM_DOMAIN_OA))
+ /* Note that GDS/GWS/OA allocates 1 page per byte/resource. */
+ if (bp->domain & (AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
+ /* GWS and OA don't need any alignment. */
+ page_align = bp->byte_align;
size <<= PAGE_SHIFT;
- else
+ } else if (bp->domain & AMDGPU_GEM_DOMAIN_GDS) {
+ /* Both size and alignment must be a multiple of 4. */
+ page_align = ALIGN(bp->byte_align, 4);
+ size = ALIGN(size, 4) << PAGE_SHIFT;
+ } else {
+ /* Memory should be aligned at least to a page size. */
+ page_align = ALIGN(bp->byte_align, PAGE_SIZE) >> PAGE_SHIFT;
size = ALIGN(size, PAGE_SIZE);
+ }
if (!amdgpu_bo_validate_size(adev, size, bp->domain))
return -ENOMEM;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 9f7d91b69ccb..fe853624e293 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -2068,7 +2068,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
}
r = amdgpu_bo_create_kernel(adev, adev->gds.mem.gfx_partition_size,
- PAGE_SIZE, AMDGPU_GEM_DOMAIN_GDS,
+ 4, AMDGPU_GEM_DOMAIN_GDS,
&adev->gds.gds_gfx_bo, NULL, NULL);
if (r)
return r;
@@ -2081,7 +2081,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
}
r = amdgpu_bo_create_kernel(adev, adev->gds.gws.gfx_partition_size,
- PAGE_SIZE, AMDGPU_GEM_DOMAIN_GWS,
+ 1, AMDGPU_GEM_DOMAIN_GWS,
&adev->gds.gws_gfx_bo, NULL, NULL);
if (r)
return r;
@@ -2094,7 +2094,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
}
r = amdgpu_bo_create_kernel(adev, adev->gds.oa.gfx_partition_size,
- PAGE_SIZE, AMDGPU_GEM_DOMAIN_OA,
+ 1, AMDGPU_GEM_DOMAIN_OA,
&adev->gds.oa_gfx_bo, NULL, NULL);
if (r)
return r;
--
2.17.1
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