drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
Extension
.c
Size
69758 bytes
Lines
2472
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 (le32_to_cpu(entries[i].id) == pptable_id) {
			*table = ((uint8_t *)v2_1 + le32_to_cpu(entries[i].ppt_offset_bytes));
			*size = le32_to_cpu(entries[i].ppt_size_bytes);
			break;
		}
	}

	if (i == pptable_count)
		return -EINVAL;

	return 0;
}

static int smu_v13_0_get_pptable_from_vbios(struct smu_context *smu, void **table, uint32_t *size)
{
	struct amdgpu_device *adev = smu->adev;
	uint16_t atom_table_size;
	uint8_t frev, crev;
	int ret, index;

	dev_info(adev->dev, "use vbios provided pptable\n");
	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
					    powerplayinfo);

	ret = amdgpu_atombios_get_data_table(adev, index, &atom_table_size, &frev, &crev,
					     (uint8_t **)table);
	if (ret)
		return ret;

	if (size)
		*size = atom_table_size;

	return 0;
}

int smu_v13_0_get_pptable_from_firmware(struct smu_context *smu,
					void **table,
					uint32_t *size,
					uint32_t pptable_id)
{
	const struct smc_firmware_header_v1_0 *hdr;
	struct amdgpu_device *adev = smu->adev;
	uint16_t version_major, version_minor;
	int ret;

	hdr = (const struct smc_firmware_header_v1_0 *) adev->pm.fw->data;
	if (!hdr)
		return -EINVAL;

	dev_info(adev->dev, "use driver provided pptable %d\n", pptable_id);

	version_major = le16_to_cpu(hdr->header.header_version_major);
	version_minor = le16_to_cpu(hdr->header.header_version_minor);
	if (version_major != 2) {
		dev_err(adev->dev, "Unsupported smu firmware version %d.%d\n",
			version_major, version_minor);
		return -EINVAL;
	}

	switch (version_minor) {
	case 0:
		ret = smu_v13_0_set_pptable_v2_0(smu, table, size);
		break;
	case 1:
		ret = smu_v13_0_set_pptable_v2_1(smu, table, size, pptable_id);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
}

int smu_v13_0_setup_pptable(struct smu_context *smu)
{
	struct amdgpu_device *adev = smu->adev;
	uint32_t size = 0, pptable_id = 0;
	void *table;
	int ret = 0;

	/* override pptable_id from driver parameter */
	if (amdgpu_smu_pptable_id >= 0) {
		pptable_id = amdgpu_smu_pptable_id;
		dev_info(adev->dev, "override pptable id %d\n", pptable_id);
	} else {
		pptable_id = smu->smu_table.boot_values.pp_table_id;
	}

	/* force using vbios pptable in sriov mode */

Annotation

Implementation Notes