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amdgpu: phytium: update phytium amdgpu controller driver support to 6.6.0.4 #1666

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amdgpu: phytium: update phytium amdgpu controller driver support to 6.6.0.4 #1666

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2f6336a
amd-gem: Add VM_ALLOW_ANY_UNCACHED flag to mmap
zhangfuxiang123 May 7, 2026
c670e70
amd-ttm: amd gpu memory visibility for vm guest
zhangfuxiang123 May 7, 2026
9082eda
Merge branch 'linux-6.6.y' into amdgpu-6.6.y
opsiff May 12, 2026
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9 changes: 9 additions & 0 deletions drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,10 @@
#include "amdgpu_hmm.h"
#include "amdgpu_xgmi.h"

#ifdef CONFIG_ARCH_PHYTIUM
#include <asm/phytium_cputype.h>
#endif

static const struct drm_gem_object_funcs amdgpu_gem_object_funcs;

static vm_fault_t amdgpu_gem_fault(struct vm_fault *vmf)
Expand Down Expand Up @@ -258,6 +262,11 @@ static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_str
!(vma->vm_flags & VM_ACCESS_FLAGS))
vm_flags_clear(vma, VM_MAYWRITE);

#ifdef CONFIG_ARCH_PHYTIUM
/*lt: workaround for bad address error with d3d11 api remoting*/
if (is_phytium_soc())
vm_flags_set(vma, VM_ALLOW_ANY_UNCACHED);
#endif
return drm_gem_ttm_mmap(obj, vma);
}

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8 changes: 6 additions & 2 deletions drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1148,8 +1148,10 @@ static int amdgpu_ttm_tt_populate(struct ttm_device *bdev,
if (ret)
return ret;

for (i = 0; i < ttm->num_pages; ++i)
for (i = 0; i < ttm->num_pages; ++i) {
ttm->pages[i]->mapping = bdev->dev_mapping;
page_ref_inc(ttm->pages[i]);
}

return 0;
}
Expand Down Expand Up @@ -1180,8 +1182,10 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_device *bdev,
if (ttm->page_flags & TTM_TT_FLAG_EXTERNAL)
return;

for (i = 0; i < ttm->num_pages; ++i)
for (i = 0; i < ttm->num_pages; ++i) {
ttm->pages[i]->mapping = NULL;
page_ref_dec(ttm->pages[i]);
}

adev = amdgpu_ttm_adev(bdev);

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