drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_1.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_1.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_1.c
Extension
.c
Size
32661 bytes
Lines
1112
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (!amdgpu_sriov_vf(adev)) {
				ring->doorbell_index =
					(adev->doorbell_index.vcn.vcn_ring0_1 << 1) +
					1 + j + 11 * jpeg_inst;
			} else {
				ring->doorbell_index =
					(adev->doorbell_index.vcn.vcn_ring0_1 << 1) +
					2 + j + 32 * jpeg_inst;
			}
			sprintf(ring->name, "jpeg_dec_%d.%d", adev->jpeg.inst[i].aid_id, j);
			r = amdgpu_ring_init(adev, ring, 512, &adev->jpeg.inst->irq, 0,
					     AMDGPU_RING_PRIO_DEFAULT, NULL);
			if (r)
				return r;

			adev->jpeg.internal.jpeg_pitch[j] =
				regUVD_JRBC0_UVD_JRBC_SCRATCH0_INTERNAL_OFFSET;
			adev->jpeg.inst[i].external.jpeg_pitch[j] =
				SOC15_REG_OFFSET1(JPEG, jpeg_inst, regUVD_JRBC_SCRATCH0,
						  (j ? jpeg_v5_0_1_core_reg_offset(j) : 0));
		}
	}

	if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__JPEG)) {
		r = amdgpu_jpeg_ras_sw_init(adev);
		if (r) {
			dev_err(adev->dev, "Failed to initialize jpeg ras block!\n");
			return r;
		}
	}

	r = amdgpu_jpeg_reg_dump_init(adev, jpeg_reg_list_5_0_1, ARRAY_SIZE(jpeg_reg_list_5_0_1));
	if (r)
		return r;

	adev->jpeg.supported_reset =
		amdgpu_get_soft_full_reset_mask(&adev->jpeg.inst[0].ring_dec[0]);
	if (!amdgpu_sriov_vf(adev))
		adev->jpeg.supported_reset |= AMDGPU_RESET_TYPE_PER_QUEUE;
	r = amdgpu_jpeg_sysfs_reset_mask_init(adev);

	return r;
}

/**
 * jpeg_v5_0_1_sw_fini - sw fini for JPEG block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * JPEG suspend and free up sw allocation
 */
static int jpeg_v5_0_1_sw_fini(struct amdgpu_ip_block *ip_block)
{
	struct amdgpu_device *adev = ip_block->adev;
	int r;

	r = amdgpu_jpeg_suspend(adev);
	if (r)
		return r;

	amdgpu_jpeg_sysfs_reset_mask_fini(adev);

	r = amdgpu_jpeg_sw_fini(adev);

	return r;
}

/**
 * jpeg_v5_0_1_hw_init - start and test JPEG block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 */
static int jpeg_v5_0_1_hw_init(struct amdgpu_ip_block *ip_block)
{
	struct amdgpu_device *adev = ip_block->adev;
	struct amdgpu_ring *ring;
	int i, j, r, jpeg_inst;

	if (amdgpu_sriov_vf(adev)) {
		r = jpeg_v5_0_1_start_sriov(adev);
		if (r)
			return r;

		for (i = 0; i < adev->jpeg.num_jpeg_inst; ++i) {
			for (j = 0; j < adev->jpeg.num_jpeg_rings; ++j) {
				ring = &adev->jpeg.inst[i].ring_dec[j];
				ring->wptr = 0;
				ring->wptr_old = 0;
				jpeg_v5_0_1_dec_ring_set_wptr(ring);

Annotation

Implementation Notes