drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_0.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_0.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_0.c
Extension
.c
Size
20659 bytes
Lines
735
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

#include "amdgpu.h"
#include "amdgpu_jpeg.h"
#include "amdgpu_pm.h"
#include "soc15.h"
#include "soc15d.h"
#include "jpeg_v2_0.h"
#include "jpeg_v4_0_3.h"

#include "vcn/vcn_5_0_0_offset.h"
#include "vcn/vcn_5_0_0_sh_mask.h"
#include "ivsrcid/vcn/irqsrcs_vcn_5_0.h"
#include "jpeg_v5_0_0.h"

static const struct amdgpu_hwip_reg_entry jpeg_reg_list_5_0[] = {
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JPEG_POWER_STATUS),
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JPEG_INT_STAT),
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JRBC_RB_RPTR),
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JRBC_RB_WPTR),
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JRBC_RB_CNTL),
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JRBC_RB_SIZE),
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JRBC_STATUS),
	SOC15_REG_ENTRY_STR(JPEG, 0, regJPEG_DEC_ADDR_MODE),
	SOC15_REG_ENTRY_STR(JPEG, 0, regJPEG_DEC_GFX10_ADDR_CONFIG),
	SOC15_REG_ENTRY_STR(JPEG, 0, regJPEG_DEC_Y_GFX10_TILING_SURFACE),
	SOC15_REG_ENTRY_STR(JPEG, 0, regJPEG_DEC_UV_GFX10_TILING_SURFACE),
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JPEG_PITCH),
	SOC15_REG_ENTRY_STR(JPEG, 0, regUVD_JPEG_UV_PITCH),
};

static void jpeg_v5_0_0_set_dec_ring_funcs(struct amdgpu_device *adev);
static void jpeg_v5_0_0_set_irq_funcs(struct amdgpu_device *adev);
static int jpeg_v5_0_0_set_powergating_state(struct amdgpu_ip_block *ip_block,
				enum amd_powergating_state state);

/**
 * jpeg_v5_0_0_early_init - set function pointers
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * Set ring and irq function pointers
 */
static int jpeg_v5_0_0_early_init(struct amdgpu_ip_block *ip_block)
{
	struct amdgpu_device *adev = ip_block->adev;

	adev->jpeg.num_jpeg_inst = 1;
	adev->jpeg.num_jpeg_rings = 1;

	jpeg_v5_0_0_set_dec_ring_funcs(adev);
	jpeg_v5_0_0_set_irq_funcs(adev);

	return 0;
}

/**
 * jpeg_v5_0_0_sw_init - sw init for JPEG block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * Load firmware and sw initialization
 */
static int jpeg_v5_0_0_sw_init(struct amdgpu_ip_block *ip_block)
{
	struct amdgpu_device *adev = ip_block->adev;
	struct amdgpu_ring *ring;
	int r;

	/* JPEG TRAP */
	r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_VCN,
		VCN_5_0__SRCID__JPEG_DECODE, &adev->jpeg.inst->irq);
	if (r)
		return r;

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

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

	ring = adev->jpeg.inst->ring_dec;
	ring->use_doorbell = true;
	ring->doorbell_index = (adev->doorbell_index.vcn.vcn_ring0_1 << 1) + 1;
	ring->vm_hub = AMDGPU_MMHUB0(0);

	sprintf(ring->name, "jpeg_dec");
	r = amdgpu_ring_init(adev, ring, 512, &adev->jpeg.inst->irq, 0,
			     AMDGPU_RING_PRIO_DEFAULT, NULL);
	if (r)

Annotation

Implementation Notes