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1024 lines
34 KiB
C
1024 lines
34 KiB
C
/*
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* CPU models for s390x
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*
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* Copyright 2016 IBM Corp.
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*
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* Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "s390x-internal.h"
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#include "kvm/kvm_s390x.h"
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#include "sysemu/kvm.h"
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#include "sysemu/tcg.h"
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#include "qapi/error.h"
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#include "qapi/visitor.h"
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#include "qemu/module.h"
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#include "qemu/hw-version.h"
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#include "qemu/qemu-print.h"
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#ifndef CONFIG_USER_ONLY
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#include "sysemu/sysemu.h"
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#endif
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#include "hw/s390x/pv.h"
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#define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
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{ \
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.name = _name, \
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.type = _type, \
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.gen = _gen, \
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.ec_ga = _ec_ga, \
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.mha_pow = _mha_pow, \
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.hmfai = _hmfai, \
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.desc = _desc, \
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.base_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE }, \
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.default_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT }, \
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.full_init = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL }, \
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}
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/*
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* CPU definition list in order of release. Up to generation 14 base features
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* of a following release have been a superset of the previous release. With
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* generation 15 one base feature and one optional feature have been deprecated.
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*/
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static S390CPUDef s390_cpu_defs[] = {
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CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"),
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CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"),
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CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"),
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CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"),
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CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"),
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CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"),
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CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"),
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CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"),
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CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"),
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CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"),
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CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"),
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CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"),
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CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"),
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CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"),
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CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"),
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CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"),
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CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"),
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CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"),
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CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"),
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CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"),
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CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"),
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CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"),
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CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"),
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CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"),
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CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"),
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CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"),
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CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"),
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CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"),
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CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"),
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CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"),
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CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
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CPUDEF_INIT(0x3906, 14, 1, 47, 0x08000000U, "z14", "IBM z14 GA1"),
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CPUDEF_INIT(0x3906, 14, 2, 47, 0x08000000U, "z14.2", "IBM z14 GA2"),
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CPUDEF_INIT(0x3907, 14, 1, 47, 0x08000000U, "z14ZR1", "IBM z14 Model ZR1 GA1"),
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CPUDEF_INIT(0x8561, 15, 1, 47, 0x08000000U, "gen15a", "IBM z15 T01 GA1"),
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CPUDEF_INIT(0x8562, 15, 1, 47, 0x08000000U, "gen15b", "IBM z15 T02 GA1"),
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CPUDEF_INIT(0x3931, 16, 1, 47, 0x08000000U, "gen16a", "IBM 3931 GA1"),
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CPUDEF_INIT(0x3932, 16, 1, 47, 0x08000000U, "gen16b", "IBM 3932 GA1"),
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};
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#define QEMU_MAX_CPU_TYPE 0x8561
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#define QEMU_MAX_CPU_GEN 15
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#define QEMU_MAX_CPU_EC_GA 1
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static S390FeatBitmap qemu_max_cpu_feat;
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/* features part of a base model but not relevant for finding a base model */
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S390FeatBitmap ignored_base_feat;
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void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
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{
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const S390CPUDef *def;
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def = s390_find_cpu_def(0, gen, ec_ga, NULL);
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clear_bit(feat, (unsigned long *)&def->default_feat);
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}
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void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
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const S390CPUDef *def = &s390_cpu_defs[i];
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if (def->gen < gen) {
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continue;
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}
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if (def->gen == gen && def->ec_ga < ec_ga) {
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continue;
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}
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clear_bit(feat, (unsigned long *)&def->default_feat);
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}
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}
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void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga,
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S390FeatGroup group)
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{
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const S390FeatGroupDef *group_def = s390_feat_group_def(group);
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S390FeatBitmap group_def_off;
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int i;
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bitmap_complement(group_def_off, group_def->feat, S390_FEAT_MAX);
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for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
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const S390CPUDef *cpu_def = &s390_cpu_defs[i];
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if (cpu_def->gen < gen) {
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continue;
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}
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if (cpu_def->gen == gen && cpu_def->ec_ga < ec_ga) {
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continue;
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}
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bitmap_and((unsigned long *)&cpu_def->default_feat,
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cpu_def->default_feat, group_def_off, S390_FEAT_MAX);
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}
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}
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uint32_t s390_get_hmfai(void)
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{
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static S390CPU *cpu;
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if (!cpu) {
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cpu = S390_CPU(qemu_get_cpu(0));
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}
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if (!cpu || !cpu->model) {
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return 0;
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}
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return cpu->model->def->hmfai;
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}
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uint8_t s390_get_mha_pow(void)
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{
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static S390CPU *cpu;
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if (!cpu) {
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cpu = S390_CPU(qemu_get_cpu(0));
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}
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if (!cpu || !cpu->model) {
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return 0;
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}
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return cpu->model->def->mha_pow;
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}
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uint32_t s390_get_ibc_val(void)
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{
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uint16_t unblocked_ibc, lowest_ibc;
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static S390CPU *cpu;
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if (!cpu) {
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cpu = S390_CPU(qemu_get_cpu(0));
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}
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if (!cpu || !cpu->model) {
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return 0;
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}
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unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
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lowest_ibc = cpu->model->lowest_ibc;
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/* the lowest_ibc always has to be <= unblocked_ibc */
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if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
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return 0;
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}
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return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
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}
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void s390_get_feat_block(S390FeatType type, uint8_t *data)
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{
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static S390CPU *cpu;
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if (!cpu) {
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cpu = S390_CPU(qemu_get_cpu(0));
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}
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if (!cpu || !cpu->model) {
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return;
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}
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s390_fill_feat_block(cpu->model->features, type, data);
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}
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bool s390_has_feat(S390Feat feat)
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{
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static S390CPU *cpu;
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if (!cpu) {
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cpu = S390_CPU(qemu_get_cpu(0));
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}
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if (!cpu || !cpu->model) {
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#ifdef CONFIG_KVM
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if (kvm_enabled()) {
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if (feat == S390_FEAT_VECTOR) {
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return kvm_check_extension(kvm_state,
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KVM_CAP_S390_VECTOR_REGISTERS);
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}
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if (feat == S390_FEAT_RUNTIME_INSTRUMENTATION) {
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return kvm_s390_get_ri();
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}
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if (feat == S390_FEAT_MSA_EXT_3) {
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return true;
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}
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}
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#endif
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if (feat == S390_FEAT_ZPCI) {
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return true;
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}
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return 0;
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}
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if (s390_is_pv()) {
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switch (feat) {
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case S390_FEAT_DIAG_318:
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case S390_FEAT_HPMA2:
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case S390_FEAT_SIE_F2:
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case S390_FEAT_SIE_SKEY:
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case S390_FEAT_SIE_GPERE:
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case S390_FEAT_SIE_SIIF:
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case S390_FEAT_SIE_SIGPIF:
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case S390_FEAT_SIE_IB:
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case S390_FEAT_SIE_CEI:
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case S390_FEAT_SIE_KSS:
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case S390_FEAT_SIE_GSLS:
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case S390_FEAT_SIE_64BSCAO:
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case S390_FEAT_SIE_CMMA:
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case S390_FEAT_SIE_PFMFI:
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case S390_FEAT_SIE_IBS:
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return false;
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break;
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default:
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break;
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}
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}
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return test_bit(feat, cpu->model->features);
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}
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uint8_t s390_get_gen_for_cpu_type(uint16_t type)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
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if (s390_cpu_defs[i].type == type) {
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return s390_cpu_defs[i].gen;
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}
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}
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return 0;
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}
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const S390CPUDef *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
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S390FeatBitmap features)
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{
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const S390CPUDef *last_compatible = NULL;
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const S390CPUDef *matching_cpu_type = NULL;
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int i;
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if (!gen) {
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ec_ga = 0;
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}
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if (!gen && type) {
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gen = s390_get_gen_for_cpu_type(type);
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}
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for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
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const S390CPUDef *def = &s390_cpu_defs[i];
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S390FeatBitmap missing;
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/* don't even try newer generations if we know the generation */
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if (gen) {
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if (def->gen > gen) {
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break;
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} else if (def->gen == gen && ec_ga && def->ec_ga > ec_ga) {
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break;
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}
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}
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if (features) {
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/* see if the model satisfies the minimum features */
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bitmap_andnot(missing, def->base_feat, features, S390_FEAT_MAX);
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/*
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* Ignore certain features that are in the base model, but not
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* relevant for the search (esp. MSA subfunctions).
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*/
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bitmap_andnot(missing, missing, ignored_base_feat, S390_FEAT_MAX);
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if (!bitmap_empty(missing, S390_FEAT_MAX)) {
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break;
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}
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}
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/* stop the search if we found the exact model */
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if (def->type == type && def->ec_ga == ec_ga) {
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return def;
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}
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/* remember if we've at least seen one with the same cpu type */
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if (def->type == type) {
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matching_cpu_type = def;
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}
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last_compatible = def;
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}
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/* prefer the model with the same cpu type, esp. don't take the BC for EC */
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if (matching_cpu_type) {
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return matching_cpu_type;
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}
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return last_compatible;
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}
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static void s390_print_cpu_model_list_entry(gpointer data, gpointer user_data)
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{
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const S390CPUClass *scc = S390_CPU_CLASS((ObjectClass *)data);
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CPUClass *cc = CPU_CLASS(scc);
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char *name = g_strdup(object_class_get_name((ObjectClass *)data));
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g_autoptr(GString) details = g_string_new("");
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if (scc->is_static) {
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g_string_append(details, "static, ");
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}
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if (scc->is_migration_safe) {
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g_string_append(details, "migration-safe, ");
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}
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if (cc->deprecation_note) {
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g_string_append(details, "deprecated, ");
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}
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if (details->len) {
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/* cull trailing ', ' */
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g_string_truncate(details, details->len - 2);
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}
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/* strip off the -s390x-cpu */
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g_strrstr(name, "-" TYPE_S390_CPU)[0] = 0;
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if (details->len) {
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qemu_printf("s390 %-15s %-35s (%s)\n", name, scc->desc, details->str);
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} else {
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qemu_printf("s390 %-15s %-35s\n", name, scc->desc);
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}
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g_free(name);
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}
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static gint s390_cpu_list_compare(gconstpointer a, gconstpointer b)
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{
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const S390CPUClass *cc_a = S390_CPU_CLASS((ObjectClass *)a);
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const S390CPUClass *cc_b = S390_CPU_CLASS((ObjectClass *)b);
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const char *name_a = object_class_get_name((ObjectClass *)a);
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const char *name_b = object_class_get_name((ObjectClass *)b);
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/*
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* Move qemu, host and max to the top of the list, qemu first, host second,
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* max third.
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*/
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if (name_a[0] == 'q') {
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return -1;
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} else if (name_b[0] == 'q') {
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return 1;
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} else if (name_a[0] == 'h') {
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return -1;
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} else if (name_b[0] == 'h') {
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return 1;
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} else if (name_a[0] == 'm') {
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return -1;
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} else if (name_b[0] == 'm') {
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return 1;
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}
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/* keep the same order we have in our table (sorted by release date) */
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if (cc_a->cpu_def != cc_b->cpu_def) {
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return cc_a->cpu_def - cc_b->cpu_def;
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}
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/* exact same definition - list base model first */
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return cc_a->is_static ? -1 : 1;
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}
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void s390_cpu_list(void)
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{
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S390FeatGroup group;
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S390Feat feat;
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GSList *list;
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list = object_class_get_list(TYPE_S390_CPU, false);
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list = g_slist_sort(list, s390_cpu_list_compare);
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g_slist_foreach(list, s390_print_cpu_model_list_entry, NULL);
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g_slist_free(list);
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qemu_printf("\nRecognized feature flags:\n");
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for (feat = 0; feat < S390_FEAT_MAX; feat++) {
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const S390FeatDef *def = s390_feat_def(feat);
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qemu_printf("%-20s %s\n", def->name, def->desc);
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}
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qemu_printf("\nRecognized feature groups:\n");
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for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
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const S390FeatGroupDef *def = s390_feat_group_def(group);
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qemu_printf("%-20s %s\n", def->name, def->desc);
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}
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}
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static void check_consistency(const S390CPUModel *model)
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{
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static int dep[][2] = {
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{ S390_FEAT_IPTE_RANGE, S390_FEAT_DAT_ENH },
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{ S390_FEAT_IDTE_SEGMENT, S390_FEAT_DAT_ENH },
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{ S390_FEAT_IDTE_REGION, S390_FEAT_DAT_ENH },
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{ S390_FEAT_IDTE_REGION, S390_FEAT_IDTE_SEGMENT },
|
|
{ S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_DAT_ENH},
|
|
{ S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_LONG_DISPLACEMENT },
|
|
{ S390_FEAT_DFP_FAST, S390_FEAT_DFP },
|
|
{ S390_FEAT_TRANSACTIONAL_EXE, S390_FEAT_STFLE_49 },
|
|
{ S390_FEAT_EDAT_2, S390_FEAT_EDAT},
|
|
{ S390_FEAT_MSA_EXT_5, S390_FEAT_KIMD_SHA_512 },
|
|
{ S390_FEAT_MSA_EXT_5, S390_FEAT_KLMD_SHA_512 },
|
|
{ S390_FEAT_MSA_EXT_4, S390_FEAT_MSA_EXT_3 },
|
|
{ S390_FEAT_SIE_CMMA, S390_FEAT_CMM },
|
|
{ S390_FEAT_SIE_CMMA, S390_FEAT_SIE_GSLS },
|
|
{ S390_FEAT_SIE_PFMFI, S390_FEAT_EDAT },
|
|
{ S390_FEAT_MSA_EXT_8, S390_FEAT_MSA_EXT_3 },
|
|
{ S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_3 },
|
|
{ S390_FEAT_MSA_EXT_9, S390_FEAT_MSA_EXT_4 },
|
|
{ S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
|
|
{ S390_FEAT_VECTOR_PACKED_DECIMAL, S390_FEAT_VECTOR },
|
|
{ S390_FEAT_VECTOR_PACKED_DECIMAL_ENH, S390_FEAT_VECTOR_PACKED_DECIMAL },
|
|
{ S390_FEAT_VECTOR_PACKED_DECIMAL_ENH2, S390_FEAT_VECTOR_PACKED_DECIMAL_ENH },
|
|
{ S390_FEAT_VECTOR_ENH, S390_FEAT_VECTOR },
|
|
{ S390_FEAT_INSTRUCTION_EXEC_PROT, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
|
|
{ S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, S390_FEAT_ESOP },
|
|
{ S390_FEAT_CMM_NT, S390_FEAT_CMM },
|
|
{ S390_FEAT_GUARDED_STORAGE, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2 },
|
|
{ S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_STORE_CLOCK_FAST },
|
|
{ S390_FEAT_MULTIPLE_EPOCH, S390_FEAT_TOD_CLOCK_STEERING },
|
|
{ S390_FEAT_SEMAPHORE_ASSIST, S390_FEAT_STFLE_49 },
|
|
{ S390_FEAT_KIMD_SHA3_224, S390_FEAT_MSA },
|
|
{ S390_FEAT_KIMD_SHA3_256, S390_FEAT_MSA },
|
|
{ S390_FEAT_KIMD_SHA3_384, S390_FEAT_MSA },
|
|
{ S390_FEAT_KIMD_SHA3_512, S390_FEAT_MSA },
|
|
{ S390_FEAT_KIMD_SHAKE_128, S390_FEAT_MSA },
|
|
{ S390_FEAT_KIMD_SHAKE_256, S390_FEAT_MSA },
|
|
{ S390_FEAT_KLMD_SHA3_224, S390_FEAT_MSA },
|
|
{ S390_FEAT_KLMD_SHA3_256, S390_FEAT_MSA },
|
|
{ S390_FEAT_KLMD_SHA3_384, S390_FEAT_MSA },
|
|
{ S390_FEAT_KLMD_SHA3_512, S390_FEAT_MSA },
|
|
{ S390_FEAT_KLMD_SHAKE_128, S390_FEAT_MSA },
|
|
{ S390_FEAT_KLMD_SHAKE_256, S390_FEAT_MSA },
|
|
{ S390_FEAT_PRNO_TRNG_QRTCR, S390_FEAT_MSA_EXT_5 },
|
|
{ S390_FEAT_PRNO_TRNG, S390_FEAT_MSA_EXT_5 },
|
|
{ S390_FEAT_SIE_KSS, S390_FEAT_SIE_F2 },
|
|
{ S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP },
|
|
{ S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP },
|
|
{ S390_FEAT_PTFF_QSIE, S390_FEAT_MULTIPLE_EPOCH },
|
|
{ S390_FEAT_PTFF_QTOUE, S390_FEAT_MULTIPLE_EPOCH },
|
|
{ S390_FEAT_PTFF_STOE, S390_FEAT_MULTIPLE_EPOCH },
|
|
{ S390_FEAT_PTFF_STOUE, S390_FEAT_MULTIPLE_EPOCH },
|
|
{ S390_FEAT_AP_QUEUE_INTERRUPT_CONTROL, S390_FEAT_AP },
|
|
{ S390_FEAT_DIAG_318, S390_FEAT_EXTENDED_LENGTH_SCCB },
|
|
{ S390_FEAT_NNPA, S390_FEAT_VECTOR },
|
|
{ S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING },
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(dep); i++) {
|
|
if (test_bit(dep[i][0], model->features) &&
|
|
!test_bit(dep[i][1], model->features)) {
|
|
warn_report("\'%s\' requires \'%s\'.",
|
|
s390_feat_def(dep[i][0])->name,
|
|
s390_feat_def(dep[i][1])->name);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void error_prepend_missing_feat(const char *name, void *opaque)
|
|
{
|
|
error_prepend((Error **) opaque, "%s ", name);
|
|
}
|
|
|
|
static void check_compatibility(const S390CPUModel *max_model,
|
|
const S390CPUModel *model, Error **errp)
|
|
{
|
|
S390FeatBitmap missing;
|
|
|
|
if (model->def->gen > max_model->def->gen) {
|
|
error_setg(errp, "Selected CPU generation is too new. Maximum "
|
|
"supported model in the configuration: \'%s\'",
|
|
max_model->def->name);
|
|
return;
|
|
} else if (model->def->gen == max_model->def->gen &&
|
|
model->def->ec_ga > max_model->def->ec_ga) {
|
|
error_setg(errp, "Selected CPU GA level is too new. Maximum "
|
|
"supported model in the configuration: \'%s\'",
|
|
max_model->def->name);
|
|
return;
|
|
}
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
if (only_migratable && test_bit(S390_FEAT_UNPACK, model->features)) {
|
|
error_setg(errp, "The unpack facility is not compatible with "
|
|
"the --only-migratable option. You must remove either "
|
|
"the 'unpack' facility or the --only-migratable option");
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
/* detect the missing features to properly report them */
|
|
bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX);
|
|
if (bitmap_empty(missing, S390_FEAT_MAX)) {
|
|
return;
|
|
}
|
|
|
|
error_setg(errp, " ");
|
|
s390_feat_bitmap_to_ascii(missing, errp, error_prepend_missing_feat);
|
|
error_prepend(errp, "Some features requested in the CPU model are not "
|
|
"available in the configuration: ");
|
|
}
|
|
|
|
S390CPUModel *get_max_cpu_model(Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
static S390CPUModel max_model;
|
|
static bool cached;
|
|
|
|
if (cached) {
|
|
return &max_model;
|
|
}
|
|
|
|
if (kvm_enabled()) {
|
|
kvm_s390_get_host_cpu_model(&max_model, &err);
|
|
} else {
|
|
max_model.def = s390_find_cpu_def(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
|
|
QEMU_MAX_CPU_EC_GA, NULL);
|
|
bitmap_copy(max_model.features, qemu_max_cpu_feat, S390_FEAT_MAX);
|
|
}
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return NULL;
|
|
}
|
|
cached = true;
|
|
return &max_model;
|
|
}
|
|
|
|
void s390_realize_cpu_model(CPUState *cs, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
|
|
S390CPU *cpu = S390_CPU(cs);
|
|
const S390CPUModel *max_model;
|
|
|
|
if (xcc->kvm_required && !kvm_enabled()) {
|
|
error_setg(errp, "CPU definition requires KVM");
|
|
return;
|
|
}
|
|
|
|
if (!cpu->model) {
|
|
/* no host model support -> perform compatibility stuff */
|
|
apply_cpu_model(NULL, errp);
|
|
return;
|
|
}
|
|
|
|
max_model = get_max_cpu_model(errp);
|
|
if (!max_model) {
|
|
error_prepend(errp, "CPU models are not available: ");
|
|
return;
|
|
}
|
|
|
|
/* copy over properties that can vary */
|
|
cpu->model->lowest_ibc = max_model->lowest_ibc;
|
|
cpu->model->cpu_id = max_model->cpu_id;
|
|
cpu->model->cpu_id_format = max_model->cpu_id_format;
|
|
cpu->model->cpu_ver = max_model->cpu_ver;
|
|
|
|
check_consistency(cpu->model);
|
|
check_compatibility(max_model, cpu->model, &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
|
|
apply_cpu_model(cpu->model, errp);
|
|
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
|
|
if (tcg_enabled()) {
|
|
/* basic mode, write the cpu address into the first 4 bit of the ID */
|
|
cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.core_id);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void get_feature(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
S390Feat feat = (S390Feat) (uintptr_t) opaque;
|
|
S390CPU *cpu = S390_CPU(obj);
|
|
bool value;
|
|
|
|
if (!cpu->model) {
|
|
error_setg(errp, "Details about the host CPU model are not available, "
|
|
"features cannot be queried.");
|
|
return;
|
|
}
|
|
|
|
value = test_bit(feat, cpu->model->features);
|
|
visit_type_bool(v, name, &value, errp);
|
|
}
|
|
|
|
static void set_feature(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
S390Feat feat = (S390Feat) (uintptr_t) opaque;
|
|
DeviceState *dev = DEVICE(obj);
|
|
S390CPU *cpu = S390_CPU(obj);
|
|
bool value;
|
|
|
|
if (dev->realized) {
|
|
error_setg(errp, "Attempt to set property '%s' on '%s' after "
|
|
"it was realized", name, object_get_typename(obj));
|
|
return;
|
|
} else if (!cpu->model) {
|
|
error_setg(errp, "Details about the host CPU model are not available, "
|
|
"features cannot be changed.");
|
|
return;
|
|
}
|
|
|
|
if (!visit_type_bool(v, name, &value, errp)) {
|
|
return;
|
|
}
|
|
if (value) {
|
|
if (!test_bit(feat, cpu->model->def->full_feat)) {
|
|
error_setg(errp, "Feature '%s' is not available for CPU model '%s',"
|
|
" it was introduced with later models.",
|
|
name, cpu->model->def->name);
|
|
return;
|
|
}
|
|
set_bit(feat, cpu->model->features);
|
|
} else {
|
|
clear_bit(feat, cpu->model->features);
|
|
}
|
|
}
|
|
|
|
static void get_feature_group(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque;
|
|
const S390FeatGroupDef *def = s390_feat_group_def(group);
|
|
S390CPU *cpu = S390_CPU(obj);
|
|
S390FeatBitmap tmp;
|
|
bool value;
|
|
|
|
if (!cpu->model) {
|
|
error_setg(errp, "Details about the host CPU model are not available, "
|
|
"features cannot be queried.");
|
|
return;
|
|
}
|
|
|
|
/* a group is enabled if all features are enabled */
|
|
bitmap_and(tmp, cpu->model->features, def->feat, S390_FEAT_MAX);
|
|
value = bitmap_equal(tmp, def->feat, S390_FEAT_MAX);
|
|
visit_type_bool(v, name, &value, errp);
|
|
}
|
|
|
|
static void set_feature_group(Object *obj, Visitor *v, const char *name,
|
|
void *opaque, Error **errp)
|
|
{
|
|
S390FeatGroup group = (S390FeatGroup) (uintptr_t) opaque;
|
|
const S390FeatGroupDef *def = s390_feat_group_def(group);
|
|
DeviceState *dev = DEVICE(obj);
|
|
S390CPU *cpu = S390_CPU(obj);
|
|
bool value;
|
|
|
|
if (dev->realized) {
|
|
error_setg(errp, "Attempt to set property '%s' on '%s' after "
|
|
"it was realized", name, object_get_typename(obj));
|
|
return;
|
|
} else if (!cpu->model) {
|
|
error_setg(errp, "Details about the host CPU model are not available, "
|
|
"features cannot be changed.");
|
|
return;
|
|
}
|
|
|
|
if (!visit_type_bool(v, name, &value, errp)) {
|
|
return;
|
|
}
|
|
if (value) {
|
|
/* groups are added in one shot, so an intersect is sufficient */
|
|
if (!bitmap_intersects(def->feat, cpu->model->def->full_feat,
|
|
S390_FEAT_MAX)) {
|
|
error_setg(errp, "Group '%s' is not available for CPU model '%s',"
|
|
" it was introduced with later models.",
|
|
name, cpu->model->def->name);
|
|
return;
|
|
}
|
|
bitmap_or(cpu->model->features, cpu->model->features, def->feat,
|
|
S390_FEAT_MAX);
|
|
} else {
|
|
bitmap_andnot(cpu->model->features, cpu->model->features, def->feat,
|
|
S390_FEAT_MAX);
|
|
}
|
|
}
|
|
|
|
static void s390_cpu_model_initfn(Object *obj)
|
|
{
|
|
S390CPU *cpu = S390_CPU(obj);
|
|
S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
|
|
|
|
cpu->model = g_malloc0(sizeof(*cpu->model));
|
|
/* copy the model, so we can modify it */
|
|
cpu->model->def = xcc->cpu_def;
|
|
if (xcc->is_static) {
|
|
/* base model - features will never change */
|
|
bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
|
|
S390_FEAT_MAX);
|
|
} else {
|
|
/* latest model - features can change */
|
|
bitmap_copy(cpu->model->features,
|
|
cpu->model->def->default_feat, S390_FEAT_MAX);
|
|
}
|
|
}
|
|
|
|
static S390CPUModel s390_qemu_cpu_model;
|
|
|
|
/* Set the qemu CPU model (on machine initialization). Must not be called
|
|
* once CPUs have been created.
|
|
*/
|
|
void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
|
|
const S390FeatInit feat_init)
|
|
{
|
|
const S390CPUDef *def = s390_find_cpu_def(type, gen, ec_ga, NULL);
|
|
|
|
g_assert(def);
|
|
g_assert(QTAILQ_EMPTY_RCU(&cpus));
|
|
|
|
/* build the CPU model */
|
|
s390_qemu_cpu_model.def = def;
|
|
bitmap_zero(s390_qemu_cpu_model.features, S390_FEAT_MAX);
|
|
s390_init_feat_bitmap(feat_init, s390_qemu_cpu_model.features);
|
|
}
|
|
|
|
static void s390_qemu_cpu_model_initfn(Object *obj)
|
|
{
|
|
S390CPU *cpu = S390_CPU(obj);
|
|
|
|
cpu->model = g_malloc0(sizeof(*cpu->model));
|
|
/* copy the CPU model so we can modify it */
|
|
memcpy(cpu->model, &s390_qemu_cpu_model, sizeof(*cpu->model));
|
|
}
|
|
|
|
static void s390_max_cpu_model_initfn(Object *obj)
|
|
{
|
|
const S390CPUModel *max_model;
|
|
S390CPU *cpu = S390_CPU(obj);
|
|
Error *local_err = NULL;
|
|
|
|
if (kvm_enabled() && !kvm_s390_cpu_models_supported()) {
|
|
/* "max" and "host" always work, even without CPU model support */
|
|
return;
|
|
}
|
|
|
|
max_model = get_max_cpu_model(&local_err);
|
|
if (local_err) {
|
|
/* we expect errors only under KVM, when actually querying the kernel */
|
|
g_assert(kvm_enabled());
|
|
error_report_err(local_err);
|
|
/* fallback to unsupported CPU models */
|
|
return;
|
|
}
|
|
|
|
cpu->model = g_new(S390CPUModel, 1);
|
|
/* copy the CPU model so we can modify it */
|
|
memcpy(cpu->model, max_model, sizeof(*cpu->model));
|
|
}
|
|
|
|
static void s390_cpu_model_finalize(Object *obj)
|
|
{
|
|
S390CPU *cpu = S390_CPU(obj);
|
|
|
|
g_free(cpu->model);
|
|
cpu->model = NULL;
|
|
}
|
|
|
|
static bool get_is_migration_safe(Object *obj, Error **errp)
|
|
{
|
|
return S390_CPU_GET_CLASS(obj)->is_migration_safe;
|
|
}
|
|
|
|
static bool get_is_static(Object *obj, Error **errp)
|
|
{
|
|
return S390_CPU_GET_CLASS(obj)->is_static;
|
|
}
|
|
|
|
static char *get_description(Object *obj, Error **errp)
|
|
{
|
|
return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
|
|
}
|
|
|
|
void s390_cpu_model_class_register_props(ObjectClass *oc)
|
|
{
|
|
S390FeatGroup group;
|
|
S390Feat feat;
|
|
|
|
object_class_property_add_bool(oc, "migration-safe", get_is_migration_safe,
|
|
NULL);
|
|
object_class_property_add_bool(oc, "static", get_is_static,
|
|
NULL);
|
|
object_class_property_add_str(oc, "description", get_description, NULL);
|
|
|
|
for (feat = 0; feat < S390_FEAT_MAX; feat++) {
|
|
const S390FeatDef *def = s390_feat_def(feat);
|
|
object_class_property_add(oc, def->name, "bool", get_feature,
|
|
set_feature, NULL, (void *) feat);
|
|
object_class_property_set_description(oc, def->name, def->desc);
|
|
}
|
|
for (group = 0; group < S390_FEAT_GROUP_MAX; group++) {
|
|
const S390FeatGroupDef *def = s390_feat_group_def(group);
|
|
object_class_property_add(oc, def->name, "bool", get_feature_group,
|
|
set_feature_group, NULL, (void *) group);
|
|
object_class_property_set_description(oc, def->name, def->desc);
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_KVM
|
|
static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
S390CPUClass *xcc = S390_CPU_CLASS(oc);
|
|
|
|
xcc->kvm_required = true;
|
|
xcc->desc = "KVM only: All recognized features";
|
|
}
|
|
#endif
|
|
|
|
static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
S390CPUClass *xcc = S390_CPU_CLASS(oc);
|
|
|
|
/* all base models are migration safe */
|
|
xcc->cpu_def = (const S390CPUDef *) data;
|
|
xcc->is_migration_safe = true;
|
|
xcc->is_static = true;
|
|
xcc->desc = xcc->cpu_def->desc;
|
|
}
|
|
|
|
static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
S390CPUClass *xcc = S390_CPU_CLASS(oc);
|
|
|
|
/* model that can change between QEMU versions */
|
|
xcc->cpu_def = (const S390CPUDef *) data;
|
|
xcc->is_migration_safe = true;
|
|
xcc->desc = xcc->cpu_def->desc;
|
|
}
|
|
|
|
static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
S390CPUClass *xcc = S390_CPU_CLASS(oc);
|
|
|
|
xcc->is_migration_safe = true;
|
|
xcc->desc = g_strdup_printf("QEMU Virtual CPU version %s",
|
|
qemu_hw_version());
|
|
}
|
|
|
|
static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
S390CPUClass *xcc = S390_CPU_CLASS(oc);
|
|
|
|
/*
|
|
* The "max" model is neither static nor migration safe. Under KVM
|
|
* it represents the "host" model. Under TCG it represents the "qemu" CPU
|
|
* model of the latest QEMU machine.
|
|
*/
|
|
xcc->desc =
|
|
"Enables all features supported by the accelerator in the current host";
|
|
}
|
|
|
|
/* Generate type name for a cpu model. Caller has to free the string. */
|
|
static char *s390_cpu_type_name(const char *model_name)
|
|
{
|
|
return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
|
|
}
|
|
|
|
/* Generate type name for a base cpu model. Caller has to free the string. */
|
|
static char *s390_base_cpu_type_name(const char *model_name)
|
|
{
|
|
return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
|
|
}
|
|
|
|
ObjectClass *s390_cpu_class_by_name(const char *name)
|
|
{
|
|
char *typename = s390_cpu_type_name(name);
|
|
ObjectClass *oc;
|
|
|
|
oc = object_class_by_name(typename);
|
|
g_free(typename);
|
|
return oc;
|
|
}
|
|
|
|
static const TypeInfo qemu_s390_cpu_type_info = {
|
|
.name = S390_CPU_TYPE_NAME("qemu"),
|
|
.parent = TYPE_S390_CPU,
|
|
.instance_init = s390_qemu_cpu_model_initfn,
|
|
.instance_finalize = s390_cpu_model_finalize,
|
|
.class_init = s390_qemu_cpu_model_class_init,
|
|
};
|
|
|
|
static const TypeInfo max_s390_cpu_type_info = {
|
|
.name = S390_CPU_TYPE_NAME("max"),
|
|
.parent = TYPE_S390_CPU,
|
|
.instance_init = s390_max_cpu_model_initfn,
|
|
.instance_finalize = s390_cpu_model_finalize,
|
|
.class_init = s390_max_cpu_model_class_init,
|
|
};
|
|
|
|
#ifdef CONFIG_KVM
|
|
static const TypeInfo host_s390_cpu_type_info = {
|
|
.name = S390_CPU_TYPE_NAME("host"),
|
|
.parent = S390_CPU_TYPE_NAME("max"),
|
|
.class_init = s390_host_cpu_model_class_init,
|
|
};
|
|
#endif
|
|
|
|
static void init_ignored_base_feat(void)
|
|
{
|
|
static const int feats[] = {
|
|
/* MSA subfunctions that could not be available on certain machines */
|
|
S390_FEAT_KMAC_DEA,
|
|
S390_FEAT_KMAC_TDEA_128,
|
|
S390_FEAT_KMAC_TDEA_192,
|
|
S390_FEAT_KMC_DEA,
|
|
S390_FEAT_KMC_TDEA_128,
|
|
S390_FEAT_KMC_TDEA_192,
|
|
S390_FEAT_KM_DEA,
|
|
S390_FEAT_KM_TDEA_128,
|
|
S390_FEAT_KM_TDEA_192,
|
|
S390_FEAT_KIMD_SHA_1,
|
|
S390_FEAT_KLMD_SHA_1,
|
|
/* CSSKE is deprecated on newer generations */
|
|
S390_FEAT_CONDITIONAL_SSKE,
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(feats); i++) {
|
|
set_bit(feats[i], ignored_base_feat);
|
|
}
|
|
}
|
|
|
|
static void register_types(void)
|
|
{
|
|
static const S390FeatInit qemu_max_init = { S390_FEAT_LIST_QEMU_MAX };
|
|
int i;
|
|
|
|
init_ignored_base_feat();
|
|
|
|
/* init all bitmaps from gnerated data initially */
|
|
s390_init_feat_bitmap(qemu_max_init, qemu_max_cpu_feat);
|
|
for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
|
|
s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
|
|
s390_cpu_defs[i].base_feat);
|
|
s390_init_feat_bitmap(s390_cpu_defs[i].default_init,
|
|
s390_cpu_defs[i].default_feat);
|
|
s390_init_feat_bitmap(s390_cpu_defs[i].full_init,
|
|
s390_cpu_defs[i].full_feat);
|
|
}
|
|
|
|
/* initialize the qemu model with the maximum definition ("max" model) */
|
|
s390_set_qemu_cpu_model(QEMU_MAX_CPU_TYPE, QEMU_MAX_CPU_GEN,
|
|
QEMU_MAX_CPU_EC_GA, qemu_max_init);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
|
|
char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
|
|
TypeInfo ti_base = {
|
|
.name = base_name,
|
|
.parent = TYPE_S390_CPU,
|
|
.instance_init = s390_cpu_model_initfn,
|
|
.instance_finalize = s390_cpu_model_finalize,
|
|
.class_init = s390_base_cpu_model_class_init,
|
|
.class_data = (void *) &s390_cpu_defs[i],
|
|
};
|
|
char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
|
|
TypeInfo ti = {
|
|
.name = name,
|
|
.parent = TYPE_S390_CPU,
|
|
.instance_init = s390_cpu_model_initfn,
|
|
.instance_finalize = s390_cpu_model_finalize,
|
|
.class_init = s390_cpu_model_class_init,
|
|
.class_data = (void *) &s390_cpu_defs[i],
|
|
};
|
|
|
|
type_register_static(&ti_base);
|
|
type_register_static(&ti);
|
|
g_free(base_name);
|
|
g_free(name);
|
|
}
|
|
|
|
type_register_static(&qemu_s390_cpu_type_info);
|
|
type_register_static(&max_s390_cpu_type_info);
|
|
#ifdef CONFIG_KVM
|
|
type_register_static(&host_s390_cpu_type_info);
|
|
#endif
|
|
}
|
|
|
|
type_init(register_types)
|