Commit aec773a1 authored by Srinivasan Shanmugam's avatar Srinivasan Shanmugam Committed by Alex Deucher
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drm/amdgpu: Add infrastructure for Cleaner Shader feature 



The cleaner shader is used by the CP firmware to clean LDS and GPRs
between processes on the CUs.

This adds an internal API for GFX IP code to allocate and initialize the
cleaner shader.

Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarSrinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Suggested-by: default avatarChristian König <christian.koenig@amd.com>
parent f49280ff

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c

+35 −0
Original line number Diff line number Diff line
@@ -1416,3 +1416,38 @@ void amdgpu_gfx_sysfs_fini(struct amdgpu_device *adev) 
	device_remove_file(adev->dev, &dev_attr_current_compute_partition);

	device_remove_file(adev->dev, &dev_attr_available_compute_partition);

}



int amdgpu_gfx_cleaner_shader_sw_init(struct amdgpu_device *adev,

				      unsigned int cleaner_shader_size)

{

	if (!adev->gfx.enable_cleaner_shader)

		return -EOPNOTSUPP;



	return amdgpu_bo_create_kernel(adev, cleaner_shader_size, PAGE_SIZE,

				       AMDGPU_GEM_DOMAIN_VRAM | AMDGPU_GEM_DOMAIN_GTT,

				       &adev->gfx.cleaner_shader_obj,

				       &adev->gfx.cleaner_shader_gpu_addr,

				       (void **)&adev->gfx.cleaner_shader_cpu_ptr);

}



void amdgpu_gfx_cleaner_shader_sw_fini(struct amdgpu_device *adev)

{

	if (!adev->gfx.enable_cleaner_shader)

		return;



	amdgpu_bo_free_kernel(&adev->gfx.cleaner_shader_obj,

			      &adev->gfx.cleaner_shader_gpu_addr,

			      (void **)&adev->gfx.cleaner_shader_cpu_ptr);

}



void amdgpu_gfx_cleaner_shader_init(struct amdgpu_device *adev,

				    unsigned int cleaner_shader_size,

				    const void *cleaner_shader_ptr)

{

	if (!adev->gfx.enable_cleaner_shader)

		return;



	if (adev->gfx.cleaner_shader_cpu_ptr && cleaner_shader_ptr)

		memcpy_toio(adev->gfx.cleaner_shader_cpu_ptr, cleaner_shader_ptr,

			    cleaner_shader_size);

}

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h

+14 −0
Original line number Diff line number Diff line
@@ -446,6 +446,14 @@ struct amdgpu_gfx { 
	uint32_t			*ip_dump_gfx_queues;



	struct mutex			reset_sem_mutex;



	/* cleaner shader */

	struct amdgpu_bo		*cleaner_shader_obj;

	unsigned int                    cleaner_shader_size;

	u64				cleaner_shader_gpu_addr;

	void				*cleaner_shader_cpu_ptr;

	const void			*cleaner_shader_ptr;

	bool				enable_cleaner_shader;

};



struct amdgpu_gfx_ras_reg_entry {
@@ -547,6 +555,12 @@ void amdgpu_gfx_ras_error_func(struct amdgpu_device *adev, 
		void *ras_error_status,

		void (*func)(struct amdgpu_device *adev, void *ras_error_status,

				int xcc_id));

int amdgpu_gfx_cleaner_shader_sw_init(struct amdgpu_device *adev,

				      unsigned int cleaner_shader_size);

void amdgpu_gfx_cleaner_shader_sw_fini(struct amdgpu_device *adev);

void amdgpu_gfx_cleaner_shader_init(struct amdgpu_device *adev,

				    unsigned int cleaner_shader_size,

				    const void *cleaner_shader_ptr);



static inline const char *amdgpu_gfx_compute_mode_desc(int mode)

{