[PATCH 02/10] drm/amdgpu:cleanup GMC & gart garbage function

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Am 14.11.2017 um 10:07 schrieb Monk Liu:
> for gart_ram_alloc/free, they are never used in driver thus
> ripe them out totally.
>
> for gart_vram_pin/unpin, they are not needed becuase we can
> use bo_creat_kernel/free to replace the original manual way
> in the gart_vram_alloc/free, thus gart_vram_pin/unpin can
> also be riped out.
>
> Change-Id: Ic60949b59d8b363e5199f6c11d9ea4a15ec57519
> Signed-off-by: Monk Liu <Monk.Liu at amd.com>

Nice, wanted to do this for a long time as well.

Patch is Reviewed-by: Christian König <christian.koenig at amd.com>

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 136 ++-----------------------------
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h |   4 -
>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c  |   2 -
>   drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c    |   7 +-
>   drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c    |   7 +-
>   drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c    |   7 +-
>   drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c    |   6 +-
>   7 files changed, 13 insertions(+), 156 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
> index e195e3c..4b5ec15 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
> @@ -59,63 +59,6 @@
>    */
>   
>   /**
> - * amdgpu_gart_table_ram_alloc - allocate system ram for gart page table
> - *
> - * @adev: amdgpu_device pointer
> - *
> - * Allocate system memory for GART page table
> - * (r1xx-r3xx, non-pcie r4xx, rs400).  These asics require the
> - * gart table to be in system memory.
> - * Returns 0 for success, -ENOMEM for failure.
> - */
> -int amdgpu_gart_table_ram_alloc(struct amdgpu_device *adev)
> -{
> -	void *ptr;
> -
> -	ptr = pci_alloc_consistent(adev->pdev, adev->gart.table_size,
> -				   &adev->gart.table_addr);
> -	if (ptr == NULL) {
> -		return -ENOMEM;
> -	}
> -#ifdef CONFIG_X86
> -	if (0) {
> -		set_memory_uc((unsigned long)ptr,
> -			      adev->gart.table_size >> PAGE_SHIFT);
> -	}
> -#endif
> -	adev->gart.ptr = ptr;
> -	memset((void *)adev->gart.ptr, 0, adev->gart.table_size);
> -	return 0;
> -}
> -
> -/**
> - * amdgpu_gart_table_ram_free - free system ram for gart page table
> - *
> - * @adev: amdgpu_device pointer
> - *
> - * Free system memory for GART page table
> - * (r1xx-r3xx, non-pcie r4xx, rs400).  These asics require the
> - * gart table to be in system memory.
> - */
> -void amdgpu_gart_table_ram_free(struct amdgpu_device *adev)
> -{
> -	if (adev->gart.ptr == NULL) {
> -		return;
> -	}
> -#ifdef CONFIG_X86
> -	if (0) {
> -		set_memory_wb((unsigned long)adev->gart.ptr,
> -			      adev->gart.table_size >> PAGE_SHIFT);
> -	}
> -#endif
> -	pci_free_consistent(adev->pdev, adev->gart.table_size,
> -			    (void *)adev->gart.ptr,
> -			    adev->gart.table_addr);
> -	adev->gart.ptr = NULL;
> -	adev->gart.table_addr = 0;
> -}
> -
> -/**
>    * amdgpu_gart_table_vram_alloc - allocate vram for gart page table
>    *
>    * @adev: amdgpu_device pointer
> @@ -127,75 +70,9 @@ void amdgpu_gart_table_ram_free(struct amdgpu_device *adev)
>    */
>   int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev)
>   {
> -	int r;
> -
> -	if (adev->gart.robj == NULL) {
> -		r = amdgpu_bo_create(adev, adev->gart.table_size,
> -				     PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM,
> -				     AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
> -				     AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,
> -				     NULL, NULL, 0, &adev->gart.robj);
> -		if (r) {
> -			return r;
> -		}
> -	}
> -	return 0;
> -}
> -
> -/**
> - * amdgpu_gart_table_vram_pin - pin gart page table in vram
> - *
> - * @adev: amdgpu_device pointer
> - *
> - * Pin the GART page table in vram so it will not be moved
> - * by the memory manager (pcie r4xx, r5xx+).  These asics require the
> - * gart table to be in video memory.
> - * Returns 0 for success, error for failure.
> - */
> -int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev)
> -{
> -	uint64_t gpu_addr;
> -	int r;
> -
> -	r = amdgpu_bo_reserve(adev->gart.robj, false);
> -	if (unlikely(r != 0))
> -		return r;
> -	r = amdgpu_bo_pin(adev->gart.robj,
> -				AMDGPU_GEM_DOMAIN_VRAM, &gpu_addr);
> -	if (r) {
> -		amdgpu_bo_unreserve(adev->gart.robj);
> -		return r;
> -	}
> -	r = amdgpu_bo_kmap(adev->gart.robj, &adev->gart.ptr);
> -	if (r)
> -		amdgpu_bo_unpin(adev->gart.robj);
> -	amdgpu_bo_unreserve(adev->gart.robj);
> -	adev->gart.table_addr = gpu_addr;
> -	return r;
> -}
> -
> -/**
> - * amdgpu_gart_table_vram_unpin - unpin gart page table in vram
> - *
> - * @adev: amdgpu_device pointer
> - *
> - * Unpin the GART page table in vram (pcie r4xx, r5xx+).
> - * These asics require the gart table to be in video memory.
> - */
> -void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev)
> -{
> -	int r;
> -
> -	if (adev->gart.robj == NULL) {
> -		return;
> -	}
> -	r = amdgpu_bo_reserve(adev->gart.robj, true);
> -	if (likely(r == 0)) {
> -		amdgpu_bo_kunmap(adev->gart.robj);
> -		amdgpu_bo_unpin(adev->gart.robj);
> -		amdgpu_bo_unreserve(adev->gart.robj);
> -		adev->gart.ptr = NULL;
> -	}
> +	return amdgpu_bo_create_kernel(adev, adev->gart.table_size, PAGE_SIZE,
> +					AMDGPU_GEM_DOMAIN_VRAM, &adev->gart.robj,
> +					&adev->gart.table_addr, &adev->gart.ptr);
>   }
>   
>   /**
> @@ -209,10 +86,9 @@ void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev)
>    */
>   void amdgpu_gart_table_vram_free(struct amdgpu_device *adev)
>   {
> -	if (adev->gart.robj == NULL) {
> -		return;
> -	}
> -	amdgpu_bo_unref(&adev->gart.robj);
> +	amdgpu_bo_free_kernel(&adev->gart.robj,
> +				&adev->gart.table_addr,
> +				&adev->gart.ptr);
>   }
>   
>   /*
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
> index afbe803..f15e319 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
> @@ -56,12 +56,8 @@ struct amdgpu_gart {
>   	const struct amdgpu_gart_funcs *gart_funcs;
>   };
>   
> -int amdgpu_gart_table_ram_alloc(struct amdgpu_device *adev);
> -void amdgpu_gart_table_ram_free(struct amdgpu_device *adev);
>   int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev);
>   void amdgpu_gart_table_vram_free(struct amdgpu_device *adev);
> -int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev);
> -void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev);
>   int amdgpu_gart_init(struct amdgpu_device *adev);
>   void amdgpu_gart_fini(struct amdgpu_device *adev);
>   int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index cf21b38..e8401a9 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -1634,8 +1634,6 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
>   
>   void amdgpu_ttm_fini(struct amdgpu_device *adev)
>   {
> -	int r;
> -
>   	if (!adev->mman.initialized)
>   		return;
>   	amdgpu_ttm_debugfs_fini(adev);
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
> index f4603a7..aac493b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
> @@ -477,16 +477,14 @@ static void gmc_v6_0_set_prt(struct amdgpu_device *adev, bool enable)
>   
>   static int gmc_v6_0_gart_enable(struct amdgpu_device *adev)
>   {
> -	int r, i;
> +	int i;
>   	u32 field;
>   
>   	if (adev->gart.robj == NULL) {
>   		dev_err(adev->dev, "No VRAM object for PCIE GART.\n");
>   		return -EINVAL;
>   	}
> -	r = amdgpu_gart_table_vram_pin(adev);
> -	if (r)
> -		return r;
> +
>   	/* Setup TLB control */
>   	WREG32(mmMC_VM_MX_L1_TLB_CNTL,
>   	       (0xA << 7) |
> @@ -613,7 +611,6 @@ static void gmc_v6_0_gart_disable(struct amdgpu_device *adev)
>   	WREG32(mmVM_L2_CNTL3,
>   	       VM_L2_CNTL3__L2_CACHE_BIGK_ASSOCIATIVITY_MASK |
>   	       (0UL << VM_L2_CNTL3__L2_CACHE_BIGK_FRAGMENT_SIZE__SHIFT));
> -	amdgpu_gart_table_vram_unpin(adev);
>   }
>   
>   static void gmc_v6_0_gart_fini(struct amdgpu_device *adev)
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> index 322edfe..dede91a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> @@ -582,16 +582,14 @@ static void gmc_v7_0_set_prt(struct amdgpu_device *adev, bool enable)
>    */
>   static int gmc_v7_0_gart_enable(struct amdgpu_device *adev)
>   {
> -	int r, i;
> +	int i;
>   	u32 tmp, field;
>   
>   	if (adev->gart.robj == NULL) {
>   		dev_err(adev->dev, "No VRAM object for PCIE GART.\n");
>   		return -EINVAL;
>   	}
> -	r = amdgpu_gart_table_vram_pin(adev);
> -	if (r)
> -		return r;
> +
>   	/* Setup TLB control */
>   	tmp = RREG32(mmMC_VM_MX_L1_TLB_CNTL);
>   	tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1);
> @@ -724,7 +722,6 @@ static void gmc_v7_0_gart_disable(struct amdgpu_device *adev)
>   	tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_CACHE, 0);
>   	WREG32(mmVM_L2_CNTL, tmp);
>   	WREG32(mmVM_L2_CNTL2, 0);
> -	amdgpu_gart_table_vram_unpin(adev);
>   }
>   
>   /**
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
> index ed6b88f..847c046 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
> @@ -785,16 +785,14 @@ static void gmc_v8_0_set_prt(struct amdgpu_device *adev, bool enable)
>    */
>   static int gmc_v8_0_gart_enable(struct amdgpu_device *adev)
>   {
> -	int r, i;
> +	int i;
>   	u32 tmp, field;
>   
>   	if (adev->gart.robj == NULL) {
>   		dev_err(adev->dev, "No VRAM object for PCIE GART.\n");
>   		return -EINVAL;
>   	}
> -	r = amdgpu_gart_table_vram_pin(adev);
> -	if (r)
> -		return r;
> +
>   	/* Setup TLB control */
>   	tmp = RREG32(mmMC_VM_MX_L1_TLB_CNTL);
>   	tmp = REG_SET_FIELD(tmp, MC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1);
> @@ -944,7 +942,6 @@ static void gmc_v8_0_gart_disable(struct amdgpu_device *adev)
>   	tmp = REG_SET_FIELD(tmp, VM_L2_CNTL, ENABLE_L2_CACHE, 0);
>   	WREG32(mmVM_L2_CNTL, tmp);
>   	WREG32(mmVM_L2_CNTL2, 0);
> -	amdgpu_gart_table_vram_unpin(adev);
>   }
>   
>   /**
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index 3a855e0..d0acf26 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -651,7 +651,7 @@ static int gmc_v9_0_sw_init(void *handle)
>   }
>   
>   /**
> - * gmc_v8_0_gart_fini - vm fini callback
> + * gmc_v9_0_gart_fini - vm fini callback
>    *
>    * @adev: amdgpu_device pointer
>    *
> @@ -715,9 +715,6 @@ static int gmc_v9_0_gart_enable(struct amdgpu_device *adev)
>   		dev_err(adev->dev, "No VRAM object for PCIE GART.\n");
>   		return -EINVAL;
>   	}
> -	r = amdgpu_gart_table_vram_pin(adev);
> -	if (r)
> -		return r;
>   
>   	switch (adev->asic_type) {
>   	case CHIP_RAVEN:
> @@ -795,7 +792,6 @@ static void gmc_v9_0_gart_disable(struct amdgpu_device *adev)
>   {
>   	gfxhub_v1_0_gart_disable(adev);
>   	mmhub_v1_0_gart_disable(adev);
> -	amdgpu_gart_table_vram_unpin(adev);
>   }
>   
>   static int gmc_v9_0_hw_fini(void *handle)




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