drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
Extension
.c
Size
182311 bytes
Lines
5680
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 (PP_CAP(PHM_PlatformCaps_ClockStretcher)) {
				for (j = 1; j < socclk_table->count; j++) {
					if (socclk_table->entries[j].clk == sclk &&
							socclk_table->entries[j].cks_enable == 0) {
						sclk += 5000;
						break;
					}
				}
			}

			PP_ASSERT_WITH_CODE(!atomctrl_get_voltage_evv_on_sclk_ai(hwmgr,
					VOLTAGE_TYPE_VDDC, sclk, vv_id, &vddc),
					"Error retrieving EVV voltage value!",
					continue);


			/* need to make sure vddc is less than 2v or else, it could burn the ASIC. */
			PP_ASSERT_WITH_CODE((vddc < 2000 && vddc != 0),
					"Invalid VDDC value", result = -EINVAL;);

			/* the voltage should not be zero nor equal to leakage ID */
			if (vddc != 0 && vddc != vv_id) {
				data->vddc_leakage.actual_voltage[data->vddc_leakage.count] = (uint16_t)(vddc/100);
				data->vddc_leakage.leakage_id[data->vddc_leakage.count] = vv_id;
				data->vddc_leakage.count++;
			}
		}
	}

	return 0;
}

/**
 * vega10_patch_with_vdd_leakage - Change virtual leakage voltage to actual value.
 *
 * @hwmgr:         the address of the powerplay hardware manager.
 * @voltage:       pointer to changing voltage
 * @leakage_table: pointer to leakage table
 */
static void vega10_patch_with_vdd_leakage(struct pp_hwmgr *hwmgr,
		uint16_t *voltage, struct vega10_leakage_voltage *leakage_table)
{
	uint32_t index;

	/* search for leakage voltage ID 0xff01 ~ 0xff08 */
	for (index = 0; index < leakage_table->count; index++) {
		/* if this voltage matches a leakage voltage ID */
		/* patch with actual leakage voltage */
		if (leakage_table->leakage_id[index] == *voltage) {
			*voltage = leakage_table->actual_voltage[index];
			break;
		}
	}

	if (*voltage > ATOM_VIRTUAL_VOLTAGE_ID0)
		pr_info("Voltage value looks like a Leakage ID but it's not patched\n");
}

/**
 * vega10_patch_lookup_table_with_leakage - Patch voltage lookup table by EVV leakages.
 *
 * @hwmgr:         the address of the powerplay hardware manager.
 * @lookup_table:  pointer to voltage lookup table
 * @leakage_table: pointer to leakage table
 * return:         always 0
 */
static int vega10_patch_lookup_table_with_leakage(struct pp_hwmgr *hwmgr,
		phm_ppt_v1_voltage_lookup_table *lookup_table,
		struct vega10_leakage_voltage *leakage_table)
{
	uint32_t i;

	for (i = 0; i < lookup_table->count; i++)
		vega10_patch_with_vdd_leakage(hwmgr,
				&lookup_table->entries[i].us_vdd, leakage_table);

	return 0;
}

static int vega10_patch_clock_voltage_limits_with_vddc_leakage(
		struct pp_hwmgr *hwmgr, struct vega10_leakage_voltage *leakage_table,
		uint16_t *vddc)
{
	vega10_patch_with_vdd_leakage(hwmgr, (uint16_t *)vddc, leakage_table);

	return 0;
}
#endif

static int vega10_patch_voltage_dependency_tables_with_lookup_table(

Annotation

Implementation Notes