73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
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/*
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* Copyright (C) 2014 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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/*
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* This file is only a database of the performance sate for CPU and GPU, regarding the kind of chip
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* or board, it has no access to the chip.
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*/
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#include <platform.h>
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#include <platform/soc/dvfmperf.h>
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// These array are the first iteration, the next part will include reference to board id, board rev, fuse rev.
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static const enum chipid_voltage_index t8010_cpu[] = {
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CHIPID_CPU_VOLTAGE_BYPASS,
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CHIPID_CPU_VOLTAGE_SECUREROM,
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CHIPID_CPU_VOLTAGE_396,
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};
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static const enum chipid_voltage_index t8010_gpu[] = {
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CHIPID_GPU_VOLTAGE_OFF,
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};
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static const struct {
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uint32_t chip_id;
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uint32_t chip_rev;
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enum chipid_voltage_type voltage_type;
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const enum chipid_voltage_index *voltage_indexes;
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uint32_t size;
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} dvfmperfs[] = { // Entry with highest chip revision must come first
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{0x8010, CHIP_REVISION_A0, CHIPID_CPU_VOLTAGE, t8010_cpu, sizeof(t8010_cpu)/sizeof(t8010_cpu[0])},
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{0x8010, CHIP_REVISION_A0, CHIPID_GPU_VOLTAGE, t8010_gpu, sizeof(t8010_gpu)/sizeof(t8010_gpu[0])},
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};
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enum chipid_voltage_index dvfmperf_get_voltage_index(uint32_t index, enum chipid_voltage_type voltage_type)
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{
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uint32_t chip_id = chipid_get_chip_id();
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uint32_t chip_rev = chipid_get_chip_revision();
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uint32_t i;
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for (i = 0; i < sizeof(dvfmperfs)/sizeof(dvfmperfs[0]); i++) {
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if (chip_id != dvfmperfs[i].chip_id) {
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continue;
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}
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if (chip_rev < dvfmperfs[i].chip_rev) {
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continue;
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}
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if (voltage_type != dvfmperfs[i].voltage_type) {
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continue;
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}
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if (index >= dvfmperfs[i].size) {
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switch (voltage_type) {
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case CHIPID_CPU_VOLTAGE:
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return dvfmperfs[i].voltage_indexes[2]; // Default to lowest frequency
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case CHIPID_GPU_VOLTAGE:
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return dvfmperfs[i].voltage_indexes[0];
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default:
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panic("Unknwon voltage type\n");
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}
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}
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return dvfmperfs[i].voltage_indexes[index];
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}
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panic("Unknown voltage for current chip\n");
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return CHIPID_GPU_VOLTAGE_OFF; // Never reach this code
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}
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