diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/i386/pc_piix.c | 15 | ||||
| -rw-r--r-- | hw/i386/pc_q35.c | 13 | ||||
| -rw-r--r-- | hw/ppc/Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/ppc/pnv.c | 23 | ||||
| -rw-r--r-- | hw/ppc/pnv_core.c | 2 | ||||
| -rw-r--r-- | hw/ppc/pnv_xscom.c | 8 | ||||
| -rw-r--r-- | hw/ppc/spapr.c | 115 | ||||
| -rw-r--r-- | hw/ppc/spapr_caps.c | 345 |
8 files changed, 475 insertions, 48 deletions
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 2febd0e136..a25619dfbf 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -426,21 +426,30 @@ static void pc_i440fx_machine_options(MachineClass *m) m->default_display = "std"; } -static void pc_i440fx_2_11_machine_options(MachineClass *m) +static void pc_i440fx_2_12_machine_options(MachineClass *m) { pc_i440fx_machine_options(m); m->alias = "pc"; m->is_default = 1; } +DEFINE_I440FX_MACHINE(v2_12, "pc-i440fx-2.12", NULL, + pc_i440fx_2_12_machine_options); + +static void pc_i440fx_2_11_machine_options(MachineClass *m) +{ + pc_i440fx_2_12_machine_options(m); + m->is_default = 0; + m->alias = NULL; + SET_MACHINE_COMPAT(m, PC_COMPAT_2_11); +} + DEFINE_I440FX_MACHINE(v2_11, "pc-i440fx-2.11", NULL, pc_i440fx_2_11_machine_options); static void pc_i440fx_2_10_machine_options(MachineClass *m) { pc_i440fx_2_11_machine_options(m); - m->is_default = 0; - m->alias = NULL; SET_MACHINE_COMPAT(m, PC_COMPAT_2_10); m->auto_enable_numa_with_memhp = false; } diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index d6060043ac..5c6c608fcb 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -303,19 +303,28 @@ static void pc_q35_machine_options(MachineClass *m) m->max_cpus = 288; } -static void pc_q35_2_11_machine_options(MachineClass *m) +static void pc_q35_2_12_machine_options(MachineClass *m) { pc_q35_machine_options(m); m->alias = "q35"; } +DEFINE_Q35_MACHINE(v2_12, "pc-q35-2.12", NULL, + pc_q35_2_12_machine_options); + +static void pc_q35_2_11_machine_options(MachineClass *m) +{ + pc_q35_2_12_machine_options(m); + m->alias = NULL; + SET_MACHINE_COMPAT(m, PC_COMPAT_2_11); +} + DEFINE_Q35_MACHINE(v2_11, "pc-q35-2.11", NULL, pc_q35_2_11_machine_options); static void pc_q35_2_10_machine_options(MachineClass *m) { pc_q35_2_11_machine_options(m); - m->alias = NULL; SET_MACHINE_COMPAT(m, PC_COMPAT_2_10); m->numa_auto_assign_ram = numa_legacy_auto_assign_ram; m->auto_enable_numa_with_memhp = false; diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs index 7efc686748..1faff853b7 100644 --- a/hw/ppc/Makefile.objs +++ b/hw/ppc/Makefile.objs @@ -1,7 +1,7 @@ # shared objects obj-y += ppc.o ppc_booke.o fdt.o # IBM pSeries (sPAPR) -obj-$(CONFIG_PSERIES) += spapr.o spapr_vio.o spapr_events.o +obj-$(CONFIG_PSERIES) += spapr.o spapr_caps.o spapr_vio.o spapr_events.o obj-$(CONFIG_PSERIES) += spapr_hcall.o spapr_iommu.o spapr_rtas.o obj-$(CONFIG_PSERIES) += spapr_pci.o spapr_rtc.o spapr_drc.o spapr_rng.o obj-$(CONFIG_PSERIES) += spapr_cpu_core.o spapr_ovec.o diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 9475e8479c..98ee3c607a 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -53,7 +53,7 @@ #define FW_MAX_SIZE 0x00400000 #define KERNEL_LOAD_ADDR 0x20000000 -#define INITRD_LOAD_ADDR 0x40000000 +#define INITRD_LOAD_ADDR 0x60000000 static const char *pnv_chip_core_typename(const PnvChip *o) { @@ -707,9 +707,9 @@ static uint32_t pnv_chip_core_pir_p9(PnvChip *chip, uint32_t core_id) #define POWER8_CORE_MASK (0x7e7eull) /* - * POWER9 has 24 cores, ids starting at 0x20 + * POWER9 has 24 cores, ids starting at 0x0 */ -#define POWER9_CORE_MASK (0xffffff00000000ull) +#define POWER9_CORE_MASK (0xffffffffffffffull) static void pnv_chip_power8e_class_init(ObjectClass *klass, void *data) { @@ -721,7 +721,6 @@ static void pnv_chip_power8e_class_init(ObjectClass *klass, void *data) k->cores_mask = POWER8E_CORE_MASK; k->core_pir = pnv_chip_core_pir_p8; k->xscom_base = 0x003fc0000000000ull; - k->xscom_core_base = 0x10000000ull; dc->desc = "PowerNV Chip POWER8E"; } @@ -735,7 +734,6 @@ static void pnv_chip_power8_class_init(ObjectClass *klass, void *data) k->cores_mask = POWER8_CORE_MASK; k->core_pir = pnv_chip_core_pir_p8; k->xscom_base = 0x003fc0000000000ull; - k->xscom_core_base = 0x10000000ull; dc->desc = "PowerNV Chip POWER8"; } @@ -749,7 +747,6 @@ static void pnv_chip_power8nvl_class_init(ObjectClass *klass, void *data) k->cores_mask = POWER8_CORE_MASK; k->core_pir = pnv_chip_core_pir_p8; k->xscom_base = 0x003fc0000000000ull; - k->xscom_core_base = 0x10000000ull; dc->desc = "PowerNV Chip POWER8NVL"; } @@ -759,11 +756,10 @@ static void pnv_chip_power9_class_init(ObjectClass *klass, void *data) PnvChipClass *k = PNV_CHIP_CLASS(klass); k->chip_type = PNV_CHIP_POWER9; - k->chip_cfam_id = 0x100d104980000000ull; /* P9 Nimbus DD1.0 */ + k->chip_cfam_id = 0x220d104900008000ull; /* P9 Nimbus DD2.0 */ k->cores_mask = POWER9_CORE_MASK; k->core_pir = pnv_chip_core_pir_p9; k->xscom_base = 0x00603fc00000000ull; - k->xscom_core_base = 0x0ull; dc->desc = "PowerNV Chip POWER9"; } @@ -887,6 +883,7 @@ static void pnv_chip_realize(DeviceState *dev, Error **errp) && (i < chip->nr_cores); core_hwid++) { char core_name[32]; void *pnv_core = chip->cores + i * typesize; + uint64_t xscom_core_base; if (!(chip->cores_mask & (1ull << core_hwid))) { continue; @@ -910,9 +907,13 @@ static void pnv_chip_realize(DeviceState *dev, Error **errp) object_unref(OBJECT(pnv_core)); /* Each core has an XSCOM MMIO region */ - pnv_xscom_add_subregion(chip, - PNV_XSCOM_EX_CORE_BASE(pcc->xscom_core_base, - core_hwid), + if (!pnv_chip_is_power9(chip)) { + xscom_core_base = PNV_XSCOM_EX_BASE(core_hwid); + } else { + xscom_core_base = PNV_XSCOM_P9_EC_BASE(core_hwid); + } + + pnv_xscom_add_subregion(chip, xscom_core_base, &PNV_CORE(pnv_core)->xscom_regs); i++; } diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c index 7e8a76df44..cbb64ad9e7 100644 --- a/hw/ppc/pnv_core.c +++ b/hw/ppc/pnv_core.c @@ -192,7 +192,7 @@ static void pnv_core_realize(DeviceState *dev, Error **errp) snprintf(name, sizeof(name), "xscom-core.%d", cc->core_id); pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), &pnv_core_xscom_ops, - pc, name, PNV_XSCOM_EX_CORE_SIZE); + pc, name, PNV_XSCOM_EX_SIZE); return; err: diff --git a/hw/ppc/pnv_xscom.c b/hw/ppc/pnv_xscom.c index e51d634f40..99c40efecd 100644 --- a/hw/ppc/pnv_xscom.c +++ b/hw/ppc/pnv_xscom.c @@ -51,10 +51,9 @@ static void xscom_complete(CPUState *cs, uint64_t hmer_bits) static uint32_t pnv_xscom_pcba(PnvChip *chip, uint64_t addr) { - PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip); - addr &= (PNV_XSCOM_SIZE - 1); - if (pcc->chip_type == PNV_CHIP_POWER9) { + + if (pnv_chip_is_power9(chip)) { return addr >> 3; } else { return ((addr >> 4) & ~0xfull) | ((addr >> 3) & 0xf); @@ -231,7 +230,6 @@ int pnv_dt_xscom(PnvChip *chip, void *fdt, int root_offset) int xscom_offset; ForeachPopulateArgs args; char *name; - PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip); name = g_strdup_printf("xscom@%" PRIx64, be64_to_cpu(reg[0])); xscom_offset = fdt_add_subnode(fdt, root_offset, name); @@ -242,7 +240,7 @@ int pnv_dt_xscom(PnvChip *chip, void *fdt, int root_offset) _FDT((fdt_setprop_cell(fdt, xscom_offset, "#size-cells", 1))); _FDT((fdt_setprop(fdt, xscom_offset, "reg", reg, sizeof(reg)))); - if (pcc->chip_type == PNV_CHIP_POWER9) { + if (pnv_chip_is_power9(chip)) { _FDT((fdt_setprop(fdt, xscom_offset, "compatible", compat_p9, sizeof(compat_p9)))); } else { diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index dfd352c473..499ab647d8 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -253,7 +253,9 @@ static int spapr_fixup_cpu_numa_dt(void *fdt, int offset, PowerPCCPU *cpu) } /* Populate the "ibm,pa-features" property */ -static void spapr_populate_pa_features(PowerPCCPU *cpu, void *fdt, int offset, +static void spapr_populate_pa_features(sPAPRMachineState *spapr, + PowerPCCPU *cpu, + void *fdt, int offset, bool legacy_guest) { CPUPPCState *env = &cpu->env; @@ -318,7 +320,7 @@ static void spapr_populate_pa_features(PowerPCCPU *cpu, void *fdt, int offset, */ pa_features[3] |= 0x20; } - if (kvmppc_has_cap_htm() && pa_size > 24) { + if ((spapr_get_cap(spapr, SPAPR_CAP_HTM) != 0) && pa_size > 24) { pa_features[24] |= 0x80; /* Transactional memory support */ } if (legacy_guest && pa_size > 40) { @@ -343,7 +345,7 @@ static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr) PowerPCCPU *cpu = POWERPC_CPU(cs); DeviceClass *dc = DEVICE_GET_CLASS(cs); int index = spapr_vcpu_id(cpu); - int compat_smt = MIN(smp_threads, ppc_compat_max_threads(cpu)); + int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu)); if ((index % smt) != 0) { continue; @@ -384,8 +386,8 @@ static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr) return ret; } - spapr_populate_pa_features(cpu, fdt, offset, - spapr->cas_legacy_guest_workaround); + spapr_populate_pa_features(spapr, cpu, fdt, offset, + spapr->cas_legacy_guest_workaround); } return ret; } @@ -501,7 +503,7 @@ static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, size_t page_sizes_prop_size; uint32_t vcpus_per_socket = smp_threads * smp_cores; uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)}; - int compat_smt = MIN(smp_threads, ppc_compat_max_threads(cpu)); + int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu)); sPAPRDRConnector *drc; int drc_index; uint32_t radix_AP_encodings[PPC_PAGE_SIZES_MAX_SZ]; @@ -555,20 +557,22 @@ static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, segs, sizeof(segs)))); } - /* Advertise VMX/VSX (vector extensions) if available - * 0 / no property == no vector extensions + /* Advertise VSX (vector extensions) if available * 1 == VMX / Altivec available - * 2 == VSX available */ - if (env->insns_flags & PPC_ALTIVEC) { - uint32_t vmx = (env->insns_flags2 & PPC2_VSX) ? 2 : 1; - - _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", vmx))); + * 2 == VSX available + * + * Only CPUs for which we create core types in spapr_cpu_core.c + * are possible, and all of those have VMX */ + if (spapr_get_cap(spapr, SPAPR_CAP_VSX) != 0) { + _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 2))); + } else { + _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 1))); } /* Advertise DFP (Decimal Floating Point) if available * 0 / no property == no DFP * 1 == DFP available */ - if (env->insns_flags2 & PPC2_DFP) { + if (spapr_get_cap(spapr, SPAPR_CAP_DFP) != 0) { _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1))); } @@ -579,7 +583,7 @@ static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, page_sizes_prop, page_sizes_prop_size))); } - spapr_populate_pa_features(cpu, fdt, offset, false); + spapr_populate_pa_features(spapr, cpu, fdt, offset, false); _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id", cs->cpu_index / vcpus_per_socket))); @@ -1466,6 +1470,8 @@ static void spapr_machine_reset(void) /* Check for unknown sysbus devices */ foreach_dynamic_sysbus_device(find_unknown_sysbus_device, NULL); + spapr_caps_reset(spapr); + first_ppc_cpu = POWERPC_CPU(first_cpu); if (kvm_enabled() && kvmppc_has_cap_mmu_radix() && ppc_check_compat(first_ppc_cpu, CPU_POWERPC_LOGICAL_3_00, 0, @@ -1580,11 +1586,28 @@ static bool spapr_vga_init(PCIBus *pci_bus, Error **errp) } } +static int spapr_pre_load(void *opaque) +{ + int rc; + + rc = spapr_caps_pre_load(opaque); + if (rc) { + return rc; + } + + return 0; +} + static int spapr_post_load(void *opaque, int version_id) { sPAPRMachineState *spapr = (sPAPRMachineState *)opaque; int err = 0; + err = spapr_caps_post_migration(spapr); + if (err) { + return err; + } + if (!object_dynamic_cast(OBJECT(spapr->ics), TYPE_ICS_KVM)) { CPUState *cs; CPU_FOREACH(cs) { @@ -1616,6 +1639,18 @@ static int spapr_post_load(void *opaque, int version_id) return err; } +static int spapr_pre_save(void *opaque) +{ + int rc; + + rc = spapr_caps_pre_save(opaque); + if (rc) { + return rc; + } + + return 0; +} + static bool version_before_3(void *opaque, int version_id) { return version_id < 3; @@ -1736,7 +1771,9 @@ static const VMStateDescription vmstate_spapr = { .name = "spapr", .version_id = 3, .minimum_version_id = 1, + .pre_load = spapr_pre_load, .post_load = spapr_post_load, + .pre_save = spapr_pre_save, .fields = (VMStateField[]) { /* used to be @next_irq */ VMSTATE_UNUSED_BUFFER(version_before_3, 0, 4), @@ -1751,6 +1788,9 @@ static const VMStateDescription vmstate_spapr = { &vmstate_spapr_ov5_cas, &vmstate_spapr_patb_entry, &vmstate_spapr_pending_events, + &vmstate_spapr_cap_htm, + &vmstate_spapr_cap_vsx, + &vmstate_spapr_cap_dfp, NULL } }; @@ -2265,26 +2305,43 @@ static void spapr_set_vsmt_mode(sPAPRMachineState *spapr, Error **errp) } /* In this case, spapr->vsmt has been set by the command line */ } else { - /* Choose a VSMT mode that may be higher than necessary but is - * likely to be compatible with hosts that don't have VSMT. */ - spapr->vsmt = MAX(kvm_smt, smp_threads); + /* + * Default VSMT value is tricky, because we need it to be as + * consistent as possible (for migration), but this requires + * changing it for at least some existing cases. We pick 8 as + * the value that we'd get with KVM on POWER8, the + * overwhelmingly common case in production systems. + */ + spapr->vsmt = 8; } /* KVM: If necessary, set the SMT mode: */ if (kvm_enabled() && (spapr->vsmt != kvm_smt)) { ret = kvmppc_set_smt_threads(spapr->vsmt); if (ret) { + /* Looks like KVM isn't able to change VSMT mode */ error_setg(&local_err, "Failed to set KVM's VSMT mode to %d (errno %d)", spapr->vsmt, ret); - if (!vsmt_user) { - error_append_hint(&local_err, "On PPC, a VM with %d threads/" - "core on a host with %d threads/core requires " - " the use of VSMT mode %d.\n", - smp_threads, kvm_smt, spapr->vsmt); + /* We can live with that if the default one is big enough + * for the number of threads, and a submultiple of the one + * we want. In this case we'll waste some vcpu ids, but + * behaviour will be correct */ + if ((kvm_smt >= smp_threads) && ((spapr->vsmt % kvm_smt) == 0)) { + warn_report_err(local_err); + local_err = NULL; + goto out; + } else { + if (!vsmt_user) { + error_append_hint(&local_err, + "On PPC, a VM with %d threads/core" + " on a host with %d threads/core" + " requires the use of VSMT mode %d.\n", + smp_threads, kvm_smt, spapr->vsmt); + } + kvmppc_hint_smt_possible(&local_err); + goto out; } - kvmppc_hint_smt_possible(&local_err); - goto out; } } /* else TCG: nothing to do currently */ @@ -3819,6 +3876,11 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data) * in which LMBs are represented and hot-added */ mc->numa_mem_align_shift = 28; + + smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF; + smc->default_caps.caps[SPAPR_CAP_VSX] = SPAPR_CAP_ON; + smc->default_caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_ON; + spapr_caps_add_properties(smc, &error_abort); } static const TypeInfo spapr_machine_info = { @@ -3896,7 +3958,10 @@ static void spapr_machine_2_11_instance_options(MachineState *machine) static void spapr_machine_2_11_class_options(MachineClass *mc) { + sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc); + spapr_machine_2_12_class_options(mc); + smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_ON; SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_11); } diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c new file mode 100644 index 0000000000..d5c9ce774a --- /dev/null +++ b/hw/ppc/spapr_caps.c @@ -0,0 +1,345 @@ +/* + * QEMU PowerPC pSeries Logical Partition capabilities handling + * + * Copyright (c) 2017 David Gibson, Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include "qemu/osdep.h" +#include "qemu/error-report.h" +#include "qapi/error.h" +#include "qapi/visitor.h" +#include "sysemu/hw_accel.h" +#include "target/ppc/cpu.h" +#include "cpu-models.h" +#include "kvm_ppc.h" + +#include "hw/ppc/spapr.h" + +typedef struct sPAPRCapabilityInfo { + const char *name; + const char *description; + int index; + + /* Getter and Setter Function Pointers */ + ObjectPropertyAccessor *get; + ObjectPropertyAccessor *set; + const char *type; + /* Make sure the virtual hardware can support this capability */ + void (*apply)(sPAPRMachineState *spapr, uint8_t val, Error **errp); +} sPAPRCapabilityInfo; + +static void spapr_cap_get_bool(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + sPAPRCapabilityInfo *cap = opaque; + sPAPRMachineState *spapr = SPAPR_MACHINE(obj); + bool value = spapr_get_cap(spapr, cap->index) == SPAPR_CAP_ON; + + visit_type_bool(v, name, &value, errp); +} + +static void spapr_cap_set_bool(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + sPAPRCapabilityInfo *cap = opaque; + sPAPRMachineState *spapr = SPAPR_MACHINE(obj); + bool value; + Error *local_err = NULL; + + visit_type_bool(v, name, &value, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + spapr->cmd_line_caps[cap->index] = true; + spapr->eff.caps[cap->index] = value ? SPAPR_CAP_ON : SPAPR_CAP_OFF; +} + +static void cap_htm_apply(sPAPRMachineState *spapr, uint8_t val, Error **errp) +{ + if (!val) { + /* TODO: We don't support disabling htm yet */ + return; + } + if (tcg_enabled()) { + error_setg(errp, + "No Transactional Memory support in TCG, try cap-htm=off"); + } else if (kvm_enabled() && !kvmppc_has_cap_htm()) { + error_setg(errp, +"KVM implementation does not support Transactional Memory, try cap-htm=off" + ); + } +} + +static void cap_vsx_apply(sPAPRMachineState *spapr, uint8_t val, Error **errp) +{ + PowerPCCPU *cpu = POWERPC_CPU(first_cpu); + CPUPPCState *env = &cpu->env; + + if (!val) { + /* TODO: We don't support disabling vsx yet */ + return; + } + /* Allowable CPUs in spapr_cpu_core.c should already have gotten + * rid of anything that doesn't do VMX */ + g_assert(env->insns_flags & PPC_ALTIVEC); + if (!(env->insns_flags2 & PPC2_VSX)) { + error_setg(errp, "VSX support not available, try cap-vsx=off"); + } +} + +static void cap_dfp_apply(sPAPRMachineState *spapr, uint8_t val, Error **errp) +{ + PowerPCCPU *cpu = POWERPC_CPU(first_cpu); + CPUPPCState *env = &cpu->env; + + if (!val) { + /* TODO: We don't support disabling dfp yet */ + return; + } + if (!(env->insns_flags2 & PPC2_DFP)) { + error_setg(errp, "DFP support not available, try cap-dfp=off"); + } +} + + +sPAPRCapabilityInfo capability_table[SPAPR_CAP_NUM] = { + [SPAPR_CAP_HTM] = { + .name = "htm", + .description = "Allow Hardware Transactional Memory (HTM)", + .index = SPAPR_CAP_HTM, + .get = spapr_cap_get_bool, + .set = spapr_cap_set_bool, + .type = "bool", + .apply = cap_htm_apply, + }, + [SPAPR_CAP_VSX] = { + .name = "vsx", + .description = "Allow Vector Scalar Extensions (VSX)", + .index = SPAPR_CAP_VSX, + .get = spapr_cap_get_bool, + .set = spapr_cap_set_bool, + .type = "bool", + .apply = cap_vsx_apply, + }, + [SPAPR_CAP_DFP] = { + .name = "dfp", + .description = "Allow Decimal Floating Point (DFP)", + .index = SPAPR_CAP_DFP, + .get = spapr_cap_get_bool, + .set = spapr_cap_set_bool, + .type = "bool", + .apply = cap_dfp_apply, + }, +}; + +static sPAPRCapabilities default_caps_with_cpu(sPAPRMachineState *spapr, + CPUState *cs) +{ + sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr); + PowerPCCPU *cpu = POWERPC_CPU(cs); + sPAPRCapabilities caps; + + caps = smc->default_caps; + + if (!ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_07, + 0, spapr->max_compat_pvr)) { + caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF; + } + + if (!ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_2_06, + 0, spapr->max_compat_pvr)) { + caps.caps[SPAPR_CAP_VSX] = SPAPR_CAP_OFF; + caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_OFF; + } + + return caps; +} + +int spapr_caps_pre_load(void *opaque) +{ + sPAPRMachineState *spapr = opaque; + + /* Set to default so we can tell if this came in with the migration */ + spapr->mig = spapr->def; + return 0; +} + +int spapr_caps_pre_save(void *opaque) +{ + sPAPRMachineState *spapr = opaque; + + spapr->mig = spapr->eff; + return 0; +} + +/* This has to be called from the top-level spapr post_load, not the + * caps specific one. Otherwise it wouldn't be called when the source + * caps are all defaults, which could still conflict with overridden + * caps on the destination */ +int spapr_caps_post_migration(sPAPRMachineState *spapr) +{ + int i; + bool ok = true; + sPAPRCapabilities dstcaps = spapr->eff; + sPAPRCapabilities srccaps; + + srccaps = default_caps_with_cpu(spapr, first_cpu); + for (i = 0; i < SPAPR_CAP_NUM; i++) { + /* If not default value then assume came in with the migration */ + if (spapr->mig.caps[i] != spapr->def.caps[i]) { + srccaps.caps[i] = spapr->mig.caps[i]; + } + } + + for (i = 0; i < SPAPR_CAP_NUM; i++) { + sPAPRCapabilityInfo *info = &capability_table[i]; + + if (srccaps.caps[i] > dstcaps.caps[i]) { + error_report("cap-%s higher level (%d) in incoming stream than on destination (%d)", + info->name, srccaps.caps[i], dstcaps.caps[i]); + ok = false; + } + + if (srccaps.caps[i] < dstcaps.caps[i]) { + warn_report("cap-%s lower level (%d) in incoming stream than on destination (%d)", + info->name, srccaps.caps[i], dstcaps.caps[i]); + } + } + + return ok ? 0 : -EINVAL; +} + +static bool spapr_cap_htm_needed(void *opaque) +{ + sPAPRMachineState *spapr = opaque; + + return spapr->cmd_line_caps[SPAPR_CAP_HTM] && + (spapr->eff.caps[SPAPR_CAP_HTM] != spapr->def.caps[SPAPR_CAP_HTM]); +} + +const VMStateDescription vmstate_spapr_cap_htm = { + .name = "spapr/cap/htm", + .version_id = 1, + .minimum_version_id = 1, + .needed = spapr_cap_htm_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT8(mig.caps[SPAPR_CAP_HTM], sPAPRMachineState), + VMSTATE_END_OF_LIST() + }, +}; + +static bool spapr_cap_vsx_needed(void *opaque) +{ + sPAPRMachineState *spapr = opaque; + + return spapr->cmd_line_caps[SPAPR_CAP_VSX] && + (spapr->eff.caps[SPAPR_CAP_VSX] != spapr->def.caps[SPAPR_CAP_VSX]); +} + +const VMStateDescription vmstate_spapr_cap_vsx = { + .name = "spapr/cap/vsx", + .version_id = 1, + .minimum_version_id = 1, + .needed = spapr_cap_vsx_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT8(mig.caps[SPAPR_CAP_VSX], sPAPRMachineState), + VMSTATE_END_OF_LIST() + }, +}; + +static bool spapr_cap_dfp_needed(void *opaque) +{ + sPAPRMachineState *spapr = opaque; + + return spapr->cmd_line_caps[SPAPR_CAP_DFP] && + (spapr->eff.caps[SPAPR_CAP_DFP] != spapr->def.caps[SPAPR_CAP_DFP]); +} + +const VMStateDescription vmstate_spapr_cap_dfp = { + .name = "spapr/cap/dfp", + .version_id = 1, + .minimum_version_id = 1, + .needed = spapr_cap_dfp_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT8(mig.caps[SPAPR_CAP_DFP], sPAPRMachineState), + VMSTATE_END_OF_LIST() + }, +}; + +void spapr_caps_reset(sPAPRMachineState *spapr) +{ + sPAPRCapabilities default_caps; + int i; + + /* First compute the actual set of caps we're running with.. */ + default_caps = default_caps_with_cpu(spapr, first_cpu); + + for (i = 0; i < SPAPR_CAP_NUM; i++) { + /* Store the defaults */ + spapr->def.caps[i] = default_caps.caps[i]; + /* If not set on the command line then apply the default value */ + if (!spapr->cmd_line_caps[i]) { + spapr->eff.caps[i] = default_caps.caps[i]; + } + } + + /* .. then apply those caps to the virtual hardware */ + + for (i = 0; i < SPAPR_CAP_NUM; i++) { + sPAPRCapabilityInfo *info = &capability_table[i]; + + /* + * If the apply function can't set the desired level and thinks it's + * fatal, it should cause that. + */ + info->apply(spapr, spapr->eff.caps[i], &error_fatal); + } +} + +void spapr_caps_add_properties(sPAPRMachineClass *smc, Error **errp) +{ + Error *local_err = NULL; + ObjectClass *klass = OBJECT_CLASS(smc); + int i; + + for (i = 0; i < ARRAY_SIZE(capability_table); i++) { + sPAPRCapabilityInfo *cap = &capability_table[i]; + const char *name = g_strdup_printf("cap-%s", cap->name); + char *desc; + + object_class_property_add(klass, name, cap->type, + cap->get, cap->set, + NULL, cap, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + desc = g_strdup_printf("%s", cap->description); + object_class_property_set_description(klass, name, desc, &local_err); + g_free(desc); + if (local_err) { + error_propagate(errp, local_err); + return; + } + } +} |