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target-arm queue:

Browse Source 
* Implement FEAT_EBF16 emulation
  * accel/tcg: Remove dead code from rr_cpu_thread_fn()
  * hw: add compat machines for 9.2
  * virt: default to two-stage SMMU from virt-9.2
  * sbsa-ref: use two-stage SMMU
  * hw: Various minor memory leak fixes
  * target/arm: Correct names of VFP VFNMA and VFNMS insns
  * hw/arm/xilinx_zynq: Enable Security Extensions
  * hw/arm/boot: Report error msg if loading elf/dtb failed
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Merge tag 'pull-target-arm-20240905' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
 * Implement FEAT_EBF16 emulation
 * accel/tcg: Remove dead code from rr_cpu_thread_fn()
 * hw: add compat machines for 9.2
 * virt: default to two-stage SMMU from virt-9.2
 * sbsa-ref: use two-stage SMMU
 * hw: Various minor memory leak fixes
 * target/arm: Correct names of VFP VFNMA and VFNMS insns
 * hw/arm/xilinx_zynq: Enable Security Extensions
 * hw/arm/boot: Report error msg if loading elf/dtb failed

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# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 05 Sep 2024 13:59:29 BST
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# gpg:                 aka "Peter Maydell <peter@archaic.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* tag 'pull-target-arm-20240905' of https://git.linaro.org/people/pmaydell/qemu-arm: (25 commits)
  platform-bus: fix refcount leak
  hw/arm/boot: Explain why load_elf_hdr() error is ignored
  hw/arm/boot: Report error msg if loading elf/dtb failed
  hw/arm/xilinx_zynq: Enable Security Extensions
  target/arm: Correct names of VFP VFNMA and VFNMS insns
  hw/arm/sbsa-ref: Don't leak string in sbsa_fdt_add_gic_node()
  hm/nvram/xlnx-versal-efuse-ctrl: Call register_finalize_block
  hw/misc/xlnx-versal-trng: Call register_finalize_block
  hw/nvram/xlnx-zynqmp-efuse: Call register_finalize_block
  hw/nvram/xlnx-bbram: Call register_finalize_block
  hw/misc/xlnx-versal-trng: Free s->prng in finalize, not unrealize
  hw/misc/xlnx-versal-cfu: destroy fifo in finalize
  hw/arm/sbsa-ref: Use two-stage SMMU
  hw/arm/virt: Default to two-stage SMMU from virt-9.2
  hw/arm/smmuv3: Update comment documenting "stage" property
  hw: add compat machines for 9.2
  accel/tcg: Remove dead code from rr_cpu_thread_fn()
  target/arm: Enable FEAT_EBF16 in the "max" CPU
  target/arm: Implement FPCR.EBF=1 semantics for bfdotadd()
  target/arm: Prepare bfdotadd() callers for FEAT_EBF support
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2024-09-06 13:59:37 +01:00
commit ec08d9a51e
42 changed files with 529 additions and 154 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
accel/tcg/tcg-accel-ops-rr.c
View File

@ -302,9 +302,7 @@ static void *rr_cpu_thread_fn(void *arg)
rr_deal_with_unplugged_cpus();
}
rcu_remove_force_rcu_notifier(&force_rcu);
rcu_unregister_thread();
return NULL;
g_assert_not_reached();
}
void rr_start_vcpu_thread(CPUState *cpu)

1
docs/system/arm/emulation.rst
View File

@ -45,6 +45,7 @@ the following architecture extensions:
- FEAT_DotProd (Advanced SIMD dot product instructions)
- FEAT_DoubleFault (Double Fault Extension)
- FEAT_E0PD (Preventing EL0 access to halves of address maps)
- FEAT_EBF16 (AArch64 Extended BFloat16 instructions)
- FEAT_ECV (Enhanced Counter Virtualization)
- FEAT_EL0 (Support for execution at EL0)
- FEAT_EL1 (Support for execution at EL1)

10
hw/arm/boot.c
View File

@ -799,14 +799,18 @@ static ssize_t arm_load_elf(struct arm_boot_info *info, uint64_t *pentry,
} elf_header;
int data_swab = 0;
bool big_endian;
ssize_t ret = -1;
ssize_t ret;
Error *err = NULL;
load_elf_hdr(info->kernel_filename, &elf_header, &elf_is64, &err);
if (err) {
/*
* If the file is not an ELF file we silently return.
* The caller will fall back to try other formats.
*/
error_free(err);
return ret;
return -1;
}
if (elf_is64) {
@ -839,6 +843,8 @@ static ssize_t arm_load_elf(struct arm_boot_info *info, uint64_t *pentry,
1, data_swab, as);
if (ret <= 0) {
/* The header loaded but the image didn't */
error_report("Couldn't load elf '%s': %s",
info->kernel_filename, load_elf_strerror(ret));
exit(1);
}

16
hw/arm/sbsa-ref.c
View File

@ -164,23 +164,20 @@ static uint64_t sbsa_ref_cpu_mp_affinity(SBSAMachineState *sms, int idx)
static void sbsa_fdt_add_gic_node(SBSAMachineState *sms)
{
char *nodename;
const char *intc_nodename = "/intc";
const char *its_nodename = "/intc/its";
nodename = g_strdup_printf("/intc");
qemu_fdt_add_subnode(sms->fdt, nodename);
qemu_fdt_setprop_sized_cells(sms->fdt, nodename, "reg",
qemu_fdt_add_subnode(sms->fdt, intc_nodename);
qemu_fdt_setprop_sized_cells(sms->fdt, intc_nodename, "reg",
2, sbsa_ref_memmap[SBSA_GIC_DIST].base,
2, sbsa_ref_memmap[SBSA_GIC_DIST].size,
2, sbsa_ref_memmap[SBSA_GIC_REDIST].base,
2, sbsa_ref_memmap[SBSA_GIC_REDIST].size);
nodename = g_strdup_printf("/intc/its");
qemu_fdt_add_subnode(sms->fdt, nodename);
qemu_fdt_setprop_sized_cells(sms->fdt, nodename, "reg",
qemu_fdt_add_subnode(sms->fdt, its_nodename);
qemu_fdt_setprop_sized_cells(sms->fdt, its_nodename, "reg",
2, sbsa_ref_memmap[SBSA_GIC_ITS].base,
2, sbsa_ref_memmap[SBSA_GIC_ITS].size);
g_free(nodename);
}
/*
@ -621,6 +618,7 @@ static void create_smmu(const SBSAMachineState *sms, PCIBus *bus)
dev = qdev_new(TYPE_ARM_SMMUV3);
object_property_set_str(OBJECT(dev), "stage", "nested", &error_abort);
object_property_set_link(OBJECT(dev), "primary-bus", OBJECT(bus),
&error_abort);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);

1
hw/arm/smmuv3.c
View File

@ -1981,6 +1981,7 @@ static Property smmuv3_properties[] = {
* Stages of translation advertised.
* "1": Stage 1
* "2": Stage 2
* "nested": Both stage 1 and stage 2
* Defaults to stage 1
*/
DEFINE_PROP_STRING("stage", SMMUv3State, stage),

19
hw/arm/virt.c
View File

@ -1408,6 +1408,7 @@ static void create_pcie_irq_map(const MachineState *ms,
static void create_smmu(const VirtMachineState *vms,
PCIBus *bus)
{
VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
char *node;
const char compat[] = "arm,smmu-v3";
int irq = vms->irqmap[VIRT_SMMU];
@ -1424,6 +1425,9 @@ static void create_smmu(const VirtMachineState *vms,
dev = qdev_new(TYPE_ARM_SMMUV3);
if (!vmc->no_nested_smmu) {
object_property_set_str(OBJECT(dev), "stage", "nested", &error_fatal);
}
object_property_set_link(OBJECT(dev), "primary-bus", OBJECT(bus),
&error_abort);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
@ -3301,10 +3305,21 @@ static void machvirt_machine_init(void)
}
type_init(machvirt_machine_init);
static void virt_machine_9_1_options(MachineClass *mc)
static void virt_machine_9_2_options(MachineClass *mc)
{
}
DEFINE_VIRT_MACHINE_AS_LATEST(9, 1)
DEFINE_VIRT_MACHINE_AS_LATEST(9, 2)
static void virt_machine_9_1_options(MachineClass *mc)
{
VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
virt_machine_9_2_options(mc);
compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
/* 9.1 and earlier have only a stage-1 SMMU, not a nested s1+2 one */
vmc->no_nested_smmu = true;
}
DEFINE_VIRT_MACHINE(9, 1)
static void virt_machine_9_0_options(MachineClass *mc)
{

8
hw/arm/xilinx_zynq.c
View File

@ -219,14 +219,6 @@ static void zynq_init(MachineState *machine)
for (n = 0; n < smp_cpus; n++) {
Object *cpuobj = object_new(machine->cpu_type);
/*
* By default A9 CPUs have EL3 enabled. This board does not currently
* support EL3 so the CPU EL3 property is disabled before realization.
*/
if (object_property_find(cpuobj, "has_el3")) {
object_property_set_bool(cpuobj, "has_el3", false, &error_fatal);
}
object_property_set_int(cpuobj, "midr", ZYNQ_BOARD_MIDR,
&error_fatal);
object_property_set_int(cpuobj, "reset-cbar", MPCORE_PERIPHBASE,

3
hw/core/machine.c
View File

@ -34,6 +34,9 @@
#include "hw/virtio/virtio-iommu.h"
#include "audio/audio.h"
GlobalProperty hw_compat_9_1[] = {};
const size_t hw_compat_9_1_len = G_N_ELEMENTS(hw_compat_9_1);
GlobalProperty hw_compat_9_0[] = {
{"arm-cpu", "backcompat-cntfrq", "true" },
{ "scsi-hd", "migrate-emulated-scsi-request", "false" },

5
hw/core/platform-bus.c
View File

@ -145,9 +145,12 @@ static void platform_bus_map_mmio(PlatformBusDevice *pbus, SysBusDevice *sbdev,
* the target device's memory region
*/
for (off = 0; off < pbus->mmio_size; off += alignment) {
if (!memory_region_find(&pbus->mmio, off, size).mr) {
MemoryRegion *mr = memory_region_find(&pbus->mmio, off, size).mr;
if (!mr) {
found_region = true;
break;
} else {
memory_region_unref(mr);
}
}

3
hw/i386/pc.c
View File

@ -79,6 +79,9 @@
{ "qemu64-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\
{ "athlon-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },
GlobalProperty pc_compat_9_1[] = {};
const size_t pc_compat_9_1_len = G_N_ELEMENTS(pc_compat_9_1);
GlobalProperty pc_compat_9_0[] = {
{ TYPE_X86_CPU, "x-amd-topoext-features-only", "false" },
{ TYPE_X86_CPU, "x-l1-cache-per-thread", "false" },

15
hw/i386/pc_piix.c
View File

@ -474,13 +474,24 @@ static void pc_i440fx_machine_options(MachineClass *m)
"Use a different south bridge than PIIX3");
}
static void pc_i440fx_machine_9_1_options(MachineClass *m)
static void pc_i440fx_machine_9_2_options(MachineClass *m)
{
pc_i440fx_machine_options(m);
m->alias = "pc";
m->is_default = true;
}
DEFINE_I440FX_MACHINE(9, 2);
static void pc_i440fx_machine_9_1_options(MachineClass *m)
{
pc_i440fx_machine_9_2_options(m);
m->alias = NULL;
m->is_default = false;
compat_props_add(m->compat_props, hw_compat_9_1, hw_compat_9_1_len);
compat_props_add(m->compat_props, pc_compat_9_1, pc_compat_9_1_len);
}
DEFINE_I440FX_MACHINE(9, 1);
static void pc_i440fx_machine_9_0_options(MachineClass *m)
@ -488,8 +499,6 @@ static void pc_i440fx_machine_9_0_options(MachineClass *m)
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_i440fx_machine_9_1_options(m);
m->alias = NULL;
m->is_default = false;
m->smbios_memory_device_size = 16 * GiB;
compat_props_add(m->compat_props, hw_compat_9_0, hw_compat_9_0_len);

13
hw/i386/pc_q35.c
View File

@ -356,19 +356,28 @@ static void pc_q35_machine_options(MachineClass *m)
pc_q35_compat_defaults, pc_q35_compat_defaults_len);
}
static void pc_q35_machine_9_1_options(MachineClass *m)
static void pc_q35_machine_9_2_options(MachineClass *m)
{
pc_q35_machine_options(m);
m->alias = "q35";
}
DEFINE_Q35_MACHINE(9, 2);
static void pc_q35_machine_9_1_options(MachineClass *m)
{
pc_q35_machine_9_2_options(m);
m->alias = NULL;
compat_props_add(m->compat_props, hw_compat_9_1, hw_compat_9_1_len);
compat_props_add(m->compat_props, pc_compat_9_1, pc_compat_9_1_len);
}
DEFINE_Q35_MACHINE(9, 1);
static void pc_q35_machine_9_0_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_machine_9_1_options(m);
m->alias = NULL;
m->smbios_memory_device_size = 16 * GiB;
compat_props_add(m->compat_props, hw_compat_9_0, hw_compat_9_0_len);
compat_props_add(m->compat_props, pc_compat_9_0, pc_compat_9_0_len);

11
hw/m68k/virt.c
View File

@ -366,10 +366,17 @@ type_init(virt_machine_register_types)
#define DEFINE_VIRT_MACHINE(major, minor) \
DEFINE_VIRT_MACHINE_IMPL(false, major, minor)
static void virt_machine_9_1_options(MachineClass *mc)
static void virt_machine_9_2_options(MachineClass *mc)
{
}
DEFINE_VIRT_MACHINE_AS_LATEST(9, 1)
DEFINE_VIRT_MACHINE_AS_LATEST(9, 2)
static void virt_machine_9_1_options(MachineClass *mc)
{
virt_machine_9_2_options(mc);
compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
}
DEFINE_VIRT_MACHINE(9, 1)
static void virt_machine_9_0_options(MachineClass *mc)
{

8
hw/misc/xlnx-versal-cfu.c
View File

@ -397,6 +397,13 @@ static void cfu_fdro_init(Object *obj)
fifo32_create(&s->fdro_data, 8 * KiB / sizeof(uint32_t));
}
static void cfu_fdro_finalize(Object *obj)
{
XlnxVersalCFUFDRO *s = XLNX_VERSAL_CFU_FDRO(obj);
fifo32_destroy(&s->fdro_data);
}
static void cfu_fdro_reset_enter(Object *obj, ResetType type)
{
XlnxVersalCFUFDRO *s = XLNX_VERSAL_CFU_FDRO(obj);
@ -539,6 +546,7 @@ static const TypeInfo cfu_fdro_info = {
.instance_size = sizeof(XlnxVersalCFUFDRO),
.class_init = cfu_fdro_class_init,
.instance_init = cfu_fdro_init,
.instance_finalize = cfu_fdro_finalize,
.interfaces = (InterfaceInfo[]) {
{ TYPE_XLNX_CFI_IF },
{ }

12
hw/misc/xlnx-versal-trng.c
View File

@ -608,9 +608,8 @@ static void trng_init(Object *obj)
{
XlnxVersalTRng *s = XLNX_VERSAL_TRNG(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
RegisterInfoArray *reg_array;
reg_array =
s->reg_array =
register_init_block32(DEVICE(obj), trng_regs_info,
ARRAY_SIZE(trng_regs_info),
s->regs_info, s->regs,
@ -618,16 +617,17 @@ static void trng_init(Object *obj)
XLNX_VERSAL_TRNG_ERR_DEBUG,
R_MAX * 4);
sysbus_init_mmio(sbd, &reg_array->mem);
sysbus_init_mmio(sbd, &s->reg_array->mem);
sysbus_init_irq(sbd, &s->irq);
s->prng = g_rand_new();
}
static void trng_unrealize(DeviceState *dev)
static void trng_finalize(Object *obj)
{
XlnxVersalTRng *s = XLNX_VERSAL_TRNG(dev);
XlnxVersalTRng *s = XLNX_VERSAL_TRNG(obj);
register_finalize_block(s->reg_array);
g_rand_free(s->prng);
s->prng = NULL;
}
@ -689,7 +689,6 @@ static void trng_class_init(ObjectClass *klass, void *data)
ResettableClass *rc = RESETTABLE_CLASS(klass);
dc->vmsd = &vmstate_trng;
dc->unrealize = trng_unrealize;
rc->phases.hold = trng_reset_hold;
/* Clone uint64 property with set allowed after realized */
@ -706,6 +705,7 @@ static const TypeInfo trng_info = {
.instance_size = sizeof(XlnxVersalTRng),
.class_init = trng_class_init,
.instance_init = trng_init,
.instance_finalize = trng_finalize,
};
static void trng_register_types(void)

13
hw/nvram/xlnx-bbram.c
View File

@ -456,9 +456,8 @@ static void bbram_ctrl_init(Object *obj)
{
XlnxBBRam *s = XLNX_BBRAM(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
RegisterInfoArray *reg_array;
reg_array =
s->reg_array =
register_init_block32(DEVICE(obj), bbram_ctrl_regs_info,
ARRAY_SIZE(bbram_ctrl_regs_info),
s->regs_info, s->regs,
@ -466,10 +465,17 @@ static void bbram_ctrl_init(Object *obj)
XLNX_BBRAM_ERR_DEBUG,
R_MAX * 4);
sysbus_init_mmio(sbd, &reg_array->mem);
sysbus_init_mmio(sbd, &s->reg_array->mem);
sysbus_init_irq(sbd, &s->irq_bbram);
}
static void bbram_ctrl_finalize(Object *obj)
{
XlnxBBRam *s = XLNX_BBRAM(obj);
register_finalize_block(s->reg_array);
}
static void bbram_prop_set_drive(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
@ -537,6 +543,7 @@ static const TypeInfo bbram_ctrl_info = {
.instance_size = sizeof(XlnxBBRam),
.class_init = bbram_ctrl_class_init,
.instance_init = bbram_ctrl_init,
.instance_finalize = bbram_ctrl_finalize,
};
static void bbram_ctrl_register_types(void)

6
hw/nvram/xlnx-versal-efuse-ctrl.c
View File

@ -712,9 +712,8 @@ static void efuse_ctrl_init(Object *obj)
{
XlnxVersalEFuseCtrl *s = XLNX_VERSAL_EFUSE_CTRL(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
RegisterInfoArray *reg_array;
reg_array =
s->reg_array =
register_init_block32(DEVICE(obj), efuse_ctrl_regs_info,
ARRAY_SIZE(efuse_ctrl_regs_info),
s->regs_info, s->regs,
@ -722,7 +721,7 @@ static void efuse_ctrl_init(Object *obj)
XLNX_VERSAL_EFUSE_CTRL_ERR_DEBUG,
R_MAX * 4);
sysbus_init_mmio(sbd, &reg_array->mem);
sysbus_init_mmio(sbd, &s->reg_array->mem);
sysbus_init_irq(sbd, &s->irq_efuse_imr);
}
@ -730,6 +729,7 @@ static void efuse_ctrl_finalize(Object *obj)
{
XlnxVersalEFuseCtrl *s = XLNX_VERSAL_EFUSE_CTRL(obj);
register_finalize_block(s->reg_array);
g_free(s->extra_pg0_lock_spec);
}

13
hw/nvram/xlnx-zynqmp-efuse.c
View File

@ -803,9 +803,8 @@ static void zynqmp_efuse_init(Object *obj)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
RegisterInfoArray *reg_array;
reg_array =
s->reg_array =
register_init_block32(DEVICE(obj), zynqmp_efuse_regs_info,
ARRAY_SIZE(zynqmp_efuse_regs_info),
s->regs_info, s->regs,
@ -813,10 +812,17 @@ static void zynqmp_efuse_init(Object *obj)
ZYNQMP_EFUSE_ERR_DEBUG,
R_MAX * 4);
sysbus_init_mmio(sbd, &reg_array->mem);
sysbus_init_mmio(sbd, &s->reg_array->mem);
sysbus_init_irq(sbd, &s->irq);
}
static void zynqmp_efuse_finalize(Object *obj)
{
XlnxZynqMPEFuse *s = XLNX_ZYNQMP_EFUSE(obj);
register_finalize_block(s->reg_array);
}
static const VMStateDescription vmstate_efuse = {
.name = TYPE_XLNX_ZYNQMP_EFUSE,
.version_id = 1,
@ -853,6 +859,7 @@ static const TypeInfo efuse_info = {
.instance_size = sizeof(XlnxZynqMPEFuse),
.class_init = zynqmp_efuse_class_init,
.instance_init = zynqmp_efuse_init,
.instance_finalize = zynqmp_efuse_finalize,
};
static void efuse_register_types(void)

17
hw/ppc/spapr.c
View File

@ -4838,14 +4838,25 @@ static void spapr_machine_latest_class_options(MachineClass *mc)
DEFINE_SPAPR_MACHINE_IMPL(false, major, minor, _, tag)
/*
* pseries-9.1
* pseries-9.2
*/
static void spapr_machine_9_1_class_options(MachineClass *mc)
static void spapr_machine_9_2_class_options(MachineClass *mc)
{
/* Defaults for the latest behaviour inherited from the base class */
}
DEFINE_SPAPR_MACHINE_AS_LATEST(9, 1);
DEFINE_SPAPR_MACHINE_AS_LATEST(9, 2);
/*
* pseries-9.1
*/
static void spapr_machine_9_1_class_options(MachineClass *mc)
{
spapr_machine_9_2_class_options(mc);
compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
}
DEFINE_SPAPR_MACHINE(9, 1);
/*
* pseries-9.0

14
hw/s390x/s390-virtio-ccw.c
View File

@ -871,14 +871,26 @@ static const TypeInfo ccw_machine_info = {
DEFINE_CCW_MACHINE_IMPL(false, major, minor)
static void ccw_machine_9_2_instance_options(MachineState *machine)
{
}
static void ccw_machine_9_2_class_options(MachineClass *mc)
{
}
DEFINE_CCW_MACHINE_AS_LATEST(9, 2);
static void ccw_machine_9_1_instance_options(MachineState *machine)
{
ccw_machine_9_2_instance_options(machine);
}
static void ccw_machine_9_1_class_options(MachineClass *mc)
{
ccw_machine_9_2_class_options(mc);
compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
}
DEFINE_CCW_MACHINE_AS_LATEST(9, 1);
DEFINE_CCW_MACHINE(9, 1);
static void ccw_machine_9_0_instance_options(MachineState *machine)
{

1
include/hw/arm/virt.h
View File

@ -134,6 +134,7 @@ struct VirtMachineClass {
bool no_cpu_topology;
bool no_tcg_lpa2;
bool no_ns_el2_virt_timer_irq;
bool no_nested_smmu;
};
struct VirtMachineState {

3
include/hw/boards.h
View File

@ -732,6 +732,9 @@ struct MachineState {
} \
type_init(machine_initfn##_register_types)
extern GlobalProperty hw_compat_9_1[];
extern const size_t hw_compat_9_1_len;
extern GlobalProperty hw_compat_9_0[];
extern const size_t hw_compat_9_0_len;

3
include/hw/i386/pc.h
View File

@ -215,6 +215,9 @@ void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size);
/* sgx.c */
void pc_machine_init_sgx_epc(PCMachineState *pcms);
extern GlobalProperty pc_compat_9_1[];
extern const size_t pc_compat_9_1_len;
extern GlobalProperty pc_compat_9_0[];
extern const size_t pc_compat_9_0_len;

1
include/hw/misc/xlnx-versal-trng.h
View File

@ -50,6 +50,7 @@ typedef struct XlnxVersalTRng {
uint64_t forced_prng_count;
uint64_t tst_seed[2];
RegisterInfoArray *reg_array;
uint32_t regs[RMAX_XLNX_VERSAL_TRNG];
RegisterInfo regs_info[RMAX_XLNX_VERSAL_TRNG];
} XlnxVersalTRng;

1
include/hw/nvram/xlnx-bbram.h
View File

@ -47,6 +47,7 @@ struct XlnxBBRam {
bool bbram8_wo;
bool blk_ro;
RegisterInfoArray *reg_array;
uint32_t regs[RMAX_XLNX_BBRAM];
RegisterInfo regs_info[RMAX_XLNX_BBRAM];
};

1
include/hw/nvram/xlnx-versal-efuse.h
View File

@ -44,6 +44,7 @@ struct XlnxVersalEFuseCtrl {
void *extra_pg0_lock_spec; /* Opaque property */
uint32_t extra_pg0_lock_n16;
RegisterInfoArray *reg_array;
uint32_t regs[XLNX_VERSAL_EFUSE_CTRL_R_MAX];
RegisterInfo regs_info[XLNX_VERSAL_EFUSE_CTRL_R_MAX];
};

1
include/hw/nvram/xlnx-zynqmp-efuse.h
View File

@ -37,6 +37,7 @@ struct XlnxZynqMPEFuse {
qemu_irq irq;
XlnxEFuse *efuse;
RegisterInfoArray *reg_array;
uint32_t regs[XLNX_ZYNQMP_EFUSE_R_MAX];
RegisterInfo regs_info[XLNX_ZYNQMP_EFUSE_R_MAX];
};

5
target/arm/cpu-features.h
View File

@ -556,6 +556,11 @@ static inline bool isar_feature_aa64_bf16(const ARMISARegisters *id)
return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, BF16) != 0;
}
static inline bool isar_feature_aa64_ebf16(const ARMISARegisters *id)
{
return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, BF16) > 1;
}
static inline bool isar_feature_aa64_rcpc_8_3(const ARMISARegisters *id)
{
return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, LRCPC) != 0;

1
target/arm/cpu.h
View File

@ -1707,6 +1707,7 @@ void vfp_set_fpscr(CPUARMState *env, uint32_t val);
#define FPCR_OFE (1 << 10) /* Overflow exception trap enable */
#define FPCR_UFE (1 << 11) /* Underflow exception trap enable */
#define FPCR_IXE (1 << 12) /* Inexact exception trap enable */
#define FPCR_EBF (1 << 13) /* Extended BFloat16 behaviors */
#define FPCR_IDE (1 << 15) /* Input Denormal exception trap enable */
#define FPCR_LEN_MASK (7 << 16) /* LEN, A-profile only */
#define FPCR_FZ16 (1 << 19) /* ARMv8.2+, FP16 flush-to-zero */

12
target/arm/helper.h
View File

@ -1027,13 +1027,13 @@ DEF_HELPER_FLAGS_5(gvec_ummla_b, TCG_CALL_NO_RWG,
DEF_HELPER_FLAGS_5(gvec_usmmla_b, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(gvec_bfdot, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(gvec_bfdot_idx, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_6(gvec_bfdot, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_FLAGS_6(gvec_bfdot_idx, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_FLAGS_5(gvec_bfmmla, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_6(gvec_bfmmla, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_FLAGS_6(gvec_bfmlal, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, i32)

4
target/arm/tcg/cpu64.c
View File

@ -1160,7 +1160,7 @@ void aarch64_max_tcg_initfn(Object *obj)
t = FIELD_DP64(t, ID_AA64ISAR1, FRINTTS, 1); /* FEAT_FRINTTS */
t = FIELD_DP64(t, ID_AA64ISAR1, SB, 1); /* FEAT_SB */
t = FIELD_DP64(t, ID_AA64ISAR1, SPECRES, 1); /* FEAT_SPECRES */
t = FIELD_DP64(t, ID_AA64ISAR1, BF16, 1); /* FEAT_BF16 */
t = FIELD_DP64(t, ID_AA64ISAR1, BF16, 2); /* FEAT_BF16, FEAT_EBF16 */
t = FIELD_DP64(t, ID_AA64ISAR1, DGH, 1); /* FEAT_DGH */
t = FIELD_DP64(t, ID_AA64ISAR1, I8MM, 1); /* FEAT_I8MM */
cpu->isar.id_aa64isar1 = t;
@ -1244,7 +1244,7 @@ void aarch64_max_tcg_initfn(Object *obj)
t = FIELD_DP64(t, ID_AA64ZFR0, SVEVER, 1);
t = FIELD_DP64(t, ID_AA64ZFR0, AES, 2); /* FEAT_SVE_PMULL128 */
t = FIELD_DP64(t, ID_AA64ZFR0, BITPERM, 1); /* FEAT_SVE_BitPerm */
t = FIELD_DP64(t, ID_AA64ZFR0, BFLOAT16, 1); /* FEAT_BF16 */
t = FIELD_DP64(t, ID_AA64ZFR0, BFLOAT16, 2); /* FEAT_BF16, FEAT_EBF16 */
t = FIELD_DP64(t, ID_AA64ZFR0, SHA3, 1); /* FEAT_SVE_SHA3 */
t = FIELD_DP64(t, ID_AA64ZFR0, SM4, 1); /* FEAT_SVE_SM4 */
t = FIELD_DP64(t, ID_AA64ZFR0, I8MM, 1); /* FEAT_I8MM */

4
target/arm/tcg/helper-sme.h
View File

@ -126,8 +126,8 @@ DEF_HELPER_FLAGS_7(sme_fmopa_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_7(sme_fmopa_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_6(sme_bfmopa, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_7(sme_bfmopa, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_FLAGS_6(sme_smopa_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_6(sme_umopa_s, TCG_CALL_NO_RWG,

78
target/arm/tcg/sme_helper.c
View File

@ -1079,38 +1079,68 @@ void HELPER(sme_fmopa_h)(void *vza, void *vzn, void *vzm, void *vpn,
}
}
void HELPER(sme_bfmopa)(void *vza, void *vzn, void *vzm, void *vpn,
void *vpm, uint32_t desc)
void HELPER(sme_bfmopa)(void *vza, void *vzn, void *vzm,
void *vpn, void *vpm, CPUARMState *env, uint32_t desc)
{
intptr_t row, col, oprsz = simd_maxsz(desc);
uint32_t neg = simd_data(desc) * 0x80008000u;
uint16_t *pn = vpn, *pm = vpm;
float_status fpst, fpst_odd;
for (row = 0; row < oprsz; ) {
uint16_t prow = pn[H2(row >> 4)];
do {
void *vza_row = vza + tile_vslice_offset(row);
uint32_t n = *(uint32_t *)(vzn + H1_4(row));
if (is_ebf(env, &fpst, &fpst_odd)) {
for (row = 0; row < oprsz; ) {
uint16_t prow = pn[H2(row >> 4)];
do {
void *vza_row = vza + tile_vslice_offset(row);
uint32_t n = *(uint32_t *)(vzn + H1_4(row));
n = f16mop_adj_pair(n, prow, neg);
n = f16mop_adj_pair(n, prow, neg);
for (col = 0; col < oprsz; ) {
uint16_t pcol = pm[H2(col >> 4)];
do {
if (prow & pcol & 0b0101) {
uint32_t *a = vza_row + H1_4(col);
uint32_t m = *(uint32_t *)(vzm + H1_4(col));
for (col = 0; col < oprsz; ) {
uint16_t pcol = pm[H2(col >> 4)];
do {
if (prow & pcol & 0b0101) {
uint32_t *a = vza_row + H1_4(col);
uint32_t m = *(uint32_t *)(vzm + H1_4(col));
m = f16mop_adj_pair(m, pcol, 0);
*a = bfdotadd(*a, n, m);
}
col += 4;
pcol >>= 4;
} while (col & 15);
}
row += 4;
prow >>= 4;
} while (row & 15);
m = f16mop_adj_pair(m, pcol, 0);
*a = bfdotadd_ebf(*a, n, m, &fpst, &fpst_odd);
}
col += 4;
pcol >>= 4;
} while (col & 15);
}
row += 4;
prow >>= 4;
} while (row & 15);
}
} else {
for (row = 0; row < oprsz; ) {
uint16_t prow = pn[H2(row >> 4)];
do {
void *vza_row = vza + tile_vslice_offset(row);
uint32_t n = *(uint32_t *)(vzn + H1_4(row));
n = f16mop_adj_pair(n, prow, neg);
for (col = 0; col < oprsz; ) {
uint16_t pcol = pm[H2(col >> 4)];
do {
if (prow & pcol & 0b0101) {
uint32_t *a = vza_row + H1_4(col);
uint32_t m = *(uint32_t *)(vzm + H1_4(col));
m = f16mop_adj_pair(m, pcol, 0);
*a = bfdotadd(*a, n, m, &fpst);
}
col += 4;
pcol >>= 4;
} while (col & 15);
}
row += 4;
prow >>= 4;
} while (row & 15);
}
}
}

40
target/arm/tcg/translate-a64.c
View File

@ -735,6 +735,22 @@ static void gen_gvec_op4_ool(DisasContext *s, bool is_q, int rd, int rn,
is_q ? 16 : 8, vec_full_reg_size(s), data, fn);
}
/*
* Expand a 4-operand operation using an out-of-line helper that takes
* a pointer to the CPU env.
*/
static void gen_gvec_op4_env(DisasContext *s, bool is_q, int rd, int rn,
int rm, int ra, int data,
gen_helper_gvec_4_ptr *fn)
{
tcg_gen_gvec_4_ptr(vec_full_reg_offset(s, rd),
vec_full_reg_offset(s, rn),
vec_full_reg_offset(s, rm),
vec_full_reg_offset(s, ra),
tcg_env,
is_q ? 16 : 8, vec_full_reg_size(s), data, fn);
}
/*
* Expand a 4-operand + fpstatus pointer + simd data value operation using
* an out-of-line helper.
@ -5608,11 +5624,20 @@ static bool do_dot_vector(DisasContext *s, arg_qrrr_e *a,
return true;
}
static bool do_dot_vector_env(DisasContext *s, arg_qrrr_e *a,
gen_helper_gvec_4_ptr *fn)
{
if (fp_access_check(s)) {
gen_gvec_op4_env(s, a->q, a->rd, a->rn, a->rm, a->rd, 0, fn);
}
return true;
}
TRANS_FEAT(SDOT_v, aa64_dp, do_dot_vector, a, gen_helper_gvec_sdot_b)
TRANS_FEAT(UDOT_v, aa64_dp, do_dot_vector, a, gen_helper_gvec_udot_b)
TRANS_FEAT(USDOT_v, aa64_i8mm, do_dot_vector, a, gen_helper_gvec_usdot_b)
TRANS_FEAT(BFDOT_v, aa64_bf16, do_dot_vector, a, gen_helper_gvec_bfdot)
TRANS_FEAT(BFMMLA, aa64_bf16, do_dot_vector, a, gen_helper_gvec_bfmmla)
TRANS_FEAT(BFDOT_v, aa64_bf16, do_dot_vector_env, a, gen_helper_gvec_bfdot)
TRANS_FEAT(BFMMLA, aa64_bf16, do_dot_vector_env, a, gen_helper_gvec_bfmmla)
TRANS_FEAT(SMMLA, aa64_i8mm, do_dot_vector, a, gen_helper_gvec_smmla_b)
TRANS_FEAT(UMMLA, aa64_i8mm, do_dot_vector, a, gen_helper_gvec_ummla_b)
TRANS_FEAT(USMMLA, aa64_i8mm, do_dot_vector, a, gen_helper_gvec_usmmla_b)
@ -6385,13 +6410,22 @@ static bool do_dot_vector_idx(DisasContext *s, arg_qrrx_e *a,
return true;
}
static bool do_dot_vector_idx_env(DisasContext *s, arg_qrrx_e *a,
gen_helper_gvec_4_ptr *fn)
{
if (fp_access_check(s)) {
gen_gvec_op4_env(s, a->q, a->rd, a->rn, a->rm, a->rd, a->idx, fn);
}
return true;
}
TRANS_FEAT(SDOT_vi, aa64_dp, do_dot_vector_idx, a, gen_helper_gvec_sdot_idx_b)
TRANS_FEAT(UDOT_vi, aa64_dp, do_dot_vector_idx, a, gen_helper_gvec_udot_idx_b)
TRANS_FEAT(SUDOT_vi, aa64_i8mm, do_dot_vector_idx, a,
gen_helper_gvec_sudot_idx_b)
TRANS_FEAT(USDOT_vi, aa64_i8mm, do_dot_vector_idx, a,
gen_helper_gvec_usdot_idx_b)
TRANS_FEAT(BFDOT_vi, aa64_bf16, do_dot_vector_idx, a,
TRANS_FEAT(BFDOT_vi, aa64_bf16, do_dot_vector_idx_env, a,
gen_helper_gvec_bfdot_idx)
static bool trans_BFMLAL_vi(DisasContext *s, arg_qrrx_e *a)

43
target/arm/tcg/translate-neon.c
View File

@ -148,6 +148,37 @@ static bool do_neon_ddda(DisasContext *s, int q, int vd, int vn, int vm,
return true;
}
static bool do_neon_ddda_env(DisasContext *s, int q, int vd, int vn, int vm,
int data, gen_helper_gvec_4_ptr *fn_gvec)
{
/* UNDEF accesses to D16-D31 if they don't exist. */
if (((vd | vn | vm) & 0x10) && !dc_isar_feature(aa32_simd_r32, s)) {
return false;
}
/*
* UNDEF accesses to odd registers for each bit of Q.
* Q will be 0b111 for all Q-reg instructions, otherwise
* when we have mixed Q- and D-reg inputs.
*/
if (((vd & 1) * 4 | (vn & 1) * 2 | (vm & 1)) & q) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
int opr_sz = q ? 16 : 8;
tcg_gen_gvec_4_ptr(vfp_reg_offset(1, vd),
vfp_reg_offset(1, vn),
vfp_reg_offset(1, vm),
vfp_reg_offset(1, vd),
tcg_env,
opr_sz, opr_sz, data, fn_gvec);
return true;
}
static bool do_neon_ddda_fpst(DisasContext *s, int q, int vd, int vn, int vm,
int data, ARMFPStatusFlavour fp_flavour,
gen_helper_gvec_4_ptr *fn_gvec_ptr)
@ -266,8 +297,8 @@ static bool trans_VDOT_b16(DisasContext *s, arg_VDOT_b16 *a)
if (!dc_isar_feature(aa32_bf16, s)) {
return false;
}
return do_neon_ddda(s, a->q * 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_bfdot);
return do_neon_ddda_env(s, a->q * 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_bfdot);
}
static bool trans_VFML(DisasContext *s, arg_VFML *a)
@ -360,8 +391,8 @@ static bool trans_VDOT_b16_scal(DisasContext *s, arg_VDOT_b16_scal *a)
if (!dc_isar_feature(aa32_bf16, s)) {
return false;
}
return do_neon_ddda(s, a->q * 6, a->vd, a->vn, a->vm, a->index,
gen_helper_gvec_bfdot_idx);
return do_neon_ddda_env(s, a->q * 6, a->vd, a->vn, a->vm, a->index,
gen_helper_gvec_bfdot_idx);
}
static bool trans_VFML_scalar(DisasContext *s, arg_VFML_scalar *a)
@ -3699,8 +3730,8 @@ static bool trans_VMMLA_b16(DisasContext *s, arg_VMMLA_b16 *a)
if (!dc_isar_feature(aa32_bf16, s)) {
return false;
}
return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_bfmmla);
return do_neon_ddda_env(s, 7, a->vd, a->vn, a->vm, 0,
gen_helper_gvec_bfmmla);
}
static bool trans_VFMA_b16(DisasContext *s, arg_VFMA_b16 *a)

3
target/arm/tcg/translate-sme.c
View File

@ -362,8 +362,7 @@ TRANS_FEAT(FMOPA_s, aa64_sme, do_outprod_fpst, a,
TRANS_FEAT(FMOPA_d, aa64_sme_f64f64, do_outprod_fpst, a,
MO_64, FPST_FPCR, gen_helper_sme_fmopa_d)
/* TODO: FEAT_EBF16 */
TRANS_FEAT(BFMOPA, aa64_sme, do_outprod, a, MO_32, gen_helper_sme_bfmopa)
TRANS_FEAT(BFMOPA, aa64_sme, do_outprod_env, a, MO_32, gen_helper_sme_bfmopa)
TRANS_FEAT(SMOPA_s, aa64_sme, do_outprod, a, MO_32, gen_helper_sme_smopa_s)
TRANS_FEAT(UMOPA_s, aa64_sme, do_outprod, a, MO_32, gen_helper_sme_umopa_s)

25
target/arm/tcg/translate-sve.c
View File

@ -252,6 +252,25 @@ static bool gen_gvec_fpst_zzzz(DisasContext *s, gen_helper_gvec_4_ptr *fn,
return ret;
}
static bool gen_gvec_env_zzzz(DisasContext *s, gen_helper_gvec_4_ptr *fn,
int rd, int rn, int rm, int ra,
int data)
{
return gen_gvec_ptr_zzzz(s, fn, rd, rn, rm, ra, data, tcg_env);
}
static bool gen_gvec_env_arg_zzzz(DisasContext *s, gen_helper_gvec_4_ptr *fn,
arg_rrrr_esz *a, int data)
{
return gen_gvec_env_zzzz(s, fn, a->rd, a->rn, a->rm, a->ra, data);
}
static bool gen_gvec_env_arg_zzxz(DisasContext *s, gen_helper_gvec_4_ptr *fn,
arg_rrxr_esz *a)
{
return gen_gvec_env_zzzz(s, fn, a->rd, a->rn, a->rm, a->ra, a->index);
}
/* Invoke an out-of-line helper on 4 Zregs, 1 Preg, plus fpst. */
static bool gen_gvec_fpst_zzzzp(DisasContext *s, gen_helper_gvec_5_ptr *fn,
int rd, int rn, int rm, int ra, int pg,
@ -7113,12 +7132,12 @@ TRANS_FEAT_NONSTREAMING(USMMLA, aa64_sve_i8mm, gen_gvec_ool_arg_zzzz,
TRANS_FEAT_NONSTREAMING(UMMLA, aa64_sve_i8mm, gen_gvec_ool_arg_zzzz,
gen_helper_gvec_ummla_b, a, 0)
TRANS_FEAT(BFDOT_zzzz, aa64_sve_bf16, gen_gvec_ool_arg_zzzz,
TRANS_FEAT(BFDOT_zzzz, aa64_sve_bf16, gen_gvec_env_arg_zzzz,
gen_helper_gvec_bfdot, a, 0)
TRANS_FEAT(BFDOT_zzxz, aa64_sve_bf16, gen_gvec_ool_arg_zzxz,
TRANS_FEAT(BFDOT_zzxz, aa64_sve_bf16, gen_gvec_env_arg_zzxz,
gen_helper_gvec_bfdot_idx, a)
TRANS_FEAT_NONSTREAMING(BFMMLA, aa64_sve_bf16, gen_gvec_ool_arg_zzzz,
TRANS_FEAT_NONSTREAMING(BFMMLA, aa64_sve_bf16, gen_gvec_env_arg_zzzz,
gen_helper_gvec_bfmmla, a, 0)
static bool do_BFMLAL_zzzw(DisasContext *s, arg_rrrr_esz *a, bool sel)

8
target/arm/tcg/translate-vfp.c
View File

@ -2190,8 +2190,8 @@ static bool do_vfm_sp(DisasContext *s, arg_VFMA_sp *a, bool neg_n, bool neg_d)
static bool do_vfm_dp(DisasContext *s, arg_VFMA_dp *a, bool neg_n, bool neg_d)
{
/*
* VFNMA : fd = muladd(-fd, fn, fm)
* VFNMS : fd = muladd(-fd, -fn, fm)
* VFNMA : fd = muladd(-fd, -fn, fm)
* VFNMS : fd = muladd(-fd, fn, fm)
* VFMA : fd = muladd( fd, fn, fm)
* VFMS : fd = muladd( fd, -fn, fm)
*
@ -2262,8 +2262,8 @@ static bool do_vfm_dp(DisasContext *s, arg_VFMA_dp *a, bool neg_n, bool neg_d)
#define MAKE_VFM_TRANS_FNS(PREC) \
MAKE_ONE_VFM_TRANS_FN(VFMA, PREC, false, false) \
MAKE_ONE_VFM_TRANS_FN(VFMS, PREC, true, false) \
MAKE_ONE_VFM_TRANS_FN(VFNMA, PREC, false, true) \
MAKE_ONE_VFM_TRANS_FN(VFNMS, PREC, true, true)
MAKE_ONE_VFM_TRANS_FN(VFNMS, PREC, false, true) \
MAKE_ONE_VFM_TRANS_FN(VFNMA, PREC, true, true)
MAKE_VFM_TRANS_FNS(hp)
MAKE_VFM_TRANS_FNS(sp)

200
target/arm/tcg/vec_helper.c
View File

@ -2790,44 +2790,115 @@ DO_MMLA_B(gvec_usmmla_b, do_usmmla_b)
* BFloat16 Dot Product
*/
float32 bfdotadd(float32 sum, uint32_t e1, uint32_t e2)
bool is_ebf(CPUARMState *env, float_status *statusp, float_status *oddstatusp)
{
/* FPCR is ignored for BFDOT and BFMMLA. */
float_status bf_status = {
/*
* For BFDOT, BFMMLA, etc, the behaviour depends on FPCR.EBF.
* For EBF = 0, we ignore the FPCR bits which determine rounding
* mode and denormal-flushing, and we do unfused multiplies and
* additions with intermediate rounding of all products and sums.
* For EBF = 1, we honour FPCR rounding mode and denormal-flushing bits,
* and we perform a fused two-way sum-of-products without intermediate
* rounding of the products.
* In either case, we don't set fp exception flags.
*
* EBF is AArch64 only, so even if it's set in the FPCR it has
* no effect on AArch32 instructions.
*/
bool ebf = is_a64(env) && env->vfp.fpcr & FPCR_EBF;
*statusp = (float_status){
.tininess_before_rounding = float_tininess_before_rounding,
.float_rounding_mode = float_round_to_odd_inf,
.flush_to_zero = true,
.flush_inputs_to_zero = true,
.default_nan_mode = true,
};
if (ebf) {
float_status *fpst = &env->vfp.fp_status;
set_flush_to_zero(get_flush_to_zero(fpst), statusp);
set_flush_inputs_to_zero(get_flush_inputs_to_zero(fpst), statusp);
set_float_rounding_mode(get_float_rounding_mode(fpst), statusp);
/* EBF=1 needs to do a step with round-to-odd semantics */
*oddstatusp = *statusp;
set_float_rounding_mode(float_round_to_odd, oddstatusp);
}
return ebf;
}
float32 bfdotadd(float32 sum, uint32_t e1, uint32_t e2, float_status *fpst)
{
float32 t1, t2;
/*
* Extract each BFloat16 from the element pair, and shift
* them such that they become float32.
*/
t1 = float32_mul(e1 << 16, e2 << 16, &bf_status);
t2 = float32_mul(e1 & 0xffff0000u, e2 & 0xffff0000u, &bf_status);
t1 = float32_add(t1, t2, &bf_status);
t1 = float32_add(sum, t1, &bf_status);
t1 = float32_mul(e1 << 16, e2 << 16, fpst);
t2 = float32_mul(e1 & 0xffff0000u, e2 & 0xffff0000u, fpst);
t1 = float32_add(t1, t2, fpst);
t1 = float32_add(sum, t1, fpst);
return t1;
}
void HELPER(gvec_bfdot)(void *vd, void *vn, void *vm, void *va, uint32_t desc)
float32 bfdotadd_ebf(float32 sum, uint32_t e1, uint32_t e2,
float_status *fpst, float_status *fpst_odd)
{
/*
* Compare f16_dotadd() in sme_helper.c, but here we have
* bfloat16 inputs. In particular that means that we do not
* want the FPCR.FZ16 flush semantics, so we use the normal
* float_status for the input handling here.
*/
float64 e1r = float32_to_float64(e1 << 16, fpst);
float64 e1c = float32_to_float64(e1 & 0xffff0000u, fpst);
float64 e2r = float32_to_float64(e2 << 16, fpst);
float64 e2c = float32_to_float64(e2 & 0xffff0000u, fpst);
float64 t64;
float32 t32;
/*
* The ARM pseudocode function FPDot performs both multiplies
* and the add with a single rounding operation. Emulate this
* by performing the first multiply in round-to-odd, then doing
* the second multiply as fused multiply-add, and rounding to
* float32 all in one step.
*/
t64 = float64_mul(e1r, e2r, fpst_odd);
t64 = float64r32_muladd(e1c, e2c, t64, 0, fpst);
/* This conversion is exact, because we've already rounded. */
t32 = float64_to_float32(t64, fpst);
/* The final accumulation step is not fused. */
return float32_add(sum, t32, fpst);
}
void HELPER(gvec_bfdot)(void *vd, void *vn, void *vm, void *va,
CPUARMState *env, uint32_t desc)
{
intptr_t i, opr_sz = simd_oprsz(desc);
float32 *d = vd, *a = va;
uint32_t *n = vn, *m = vm;
float_status fpst, fpst_odd;
for (i = 0; i < opr_sz / 4; ++i) {
d[i] = bfdotadd(a[i], n[i], m[i]);
if (is_ebf(env, &fpst, &fpst_odd)) {
for (i = 0; i < opr_sz / 4; ++i) {
d[i] = bfdotadd_ebf(a[i], n[i], m[i], &fpst, &fpst_odd);
}
} else {
for (i = 0; i < opr_sz / 4; ++i) {
d[i] = bfdotadd(a[i], n[i], m[i], &fpst);
}
}
clear_tail(d, opr_sz, simd_maxsz(desc));
}
void HELPER(gvec_bfdot_idx)(void *vd, void *vn, void *vm,
void *va, uint32_t desc)
void *va, CPUARMState *env, uint32_t desc)
{
intptr_t i, j, opr_sz = simd_oprsz(desc);
intptr_t index = simd_data(desc);
@ -2835,53 +2906,100 @@ void HELPER(gvec_bfdot_idx)(void *vd, void *vn, void *vm,
intptr_t eltspersegment = MIN(16 / 4, elements);
float32 *d = vd, *a = va;
uint32_t *n = vn, *m = vm;
float_status fpst, fpst_odd;
for (i = 0; i < elements; i += eltspersegment) {
uint32_t m_idx = m[i + H4(index)];
if (is_ebf(env, &fpst, &fpst_odd)) {
for (i = 0; i < elements; i += eltspersegment) {
uint32_t m_idx = m[i + H4(index)];
for (j = i; j < i + eltspersegment; j++) {
d[j] = bfdotadd(a[j], n[j], m_idx);
for (j = i; j < i + eltspersegment; j++) {
d[j] = bfdotadd_ebf(a[j], n[j], m_idx, &fpst, &fpst_odd);
}
}
} else {
for (i = 0; i < elements; i += eltspersegment) {
uint32_t m_idx = m[i + H4(index)];
for (j = i; j < i + eltspersegment; j++) {
d[j] = bfdotadd(a[j], n[j], m_idx, &fpst);
}
}
}
clear_tail(d, opr_sz, simd_maxsz(desc));
}
void HELPER(gvec_bfmmla)(void *vd, void *vn, void *vm, void *va, uint32_t desc)
void HELPER(gvec_bfmmla)(void *vd, void *vn, void *vm, void *va,
CPUARMState *env, uint32_t desc)
{
intptr_t s, opr_sz = simd_oprsz(desc);
float32 *d = vd, *a = va;
uint32_t *n = vn, *m = vm;
float_status fpst, fpst_odd;
for (s = 0; s < opr_sz / 4; s += 4) {
float32 sum00, sum01, sum10, sum11;
if (is_ebf(env, &fpst, &fpst_odd)) {
for (s = 0; s < opr_sz / 4; s += 4) {
float32 sum00, sum01, sum10, sum11;
/*
* Process the entire segment at once, writing back the
* results only after we've consumed all of the inputs.
*
* Key to indices by column:
* i j i k j k
*/
sum00 = a[s + H4(0 + 0)];
sum00 = bfdotadd(sum00, n[s + H4(0 + 0)], m[s + H4(0 + 0)]);
sum00 = bfdotadd(sum00, n[s + H4(0 + 1)], m[s + H4(0 + 1)]);
/*
* Process the entire segment at once, writing back the
* results only after we've consumed all of the inputs.
*
* Key to indices by column:
* i j i k j k
*/
sum00 = a[s + H4(0 + 0)];
sum00 = bfdotadd_ebf(sum00, n[s + H4(0 + 0)], m[s + H4(0 + 0)], &fpst, &fpst_odd);
sum00 = bfdotadd_ebf(sum00, n[s + H4(0 + 1)], m[s + H4(0 + 1)], &fpst, &fpst_odd);
sum01 = a[s + H4(0 + 1)];
sum01 = bfdotadd(sum01, n[s + H4(0 + 0)], m[s + H4(2 + 0)]);
sum01 = bfdotadd(sum01, n[s + H4(0 + 1)], m[s + H4(2 + 1)]);
sum01 = a[s + H4(0 + 1)];
sum01 = bfdotadd_ebf(sum01, n[s + H4(0 + 0)], m[s + H4(2 + 0)], &fpst, &fpst_odd);
sum01 = bfdotadd_ebf(sum01, n[s + H4(0 + 1)], m[s + H4(2 + 1)], &fpst, &fpst_odd);
sum10 = a[s + H4(2 + 0)];
sum10 = bfdotadd(sum10, n[s + H4(2 + 0)], m[s + H4(0 + 0)]);
sum10 = bfdotadd(sum10, n[s + H4(2 + 1)], m[s + H4(0 + 1)]);
sum10 = a[s + H4(2 + 0)];
sum10 = bfdotadd_ebf(sum10, n[s + H4(2 + 0)], m[s + H4(0 + 0)], &fpst, &fpst_odd);
sum10 = bfdotadd_ebf(sum10, n[s + H4(2 + 1)], m[s + H4(0 + 1)], &fpst, &fpst_odd);
sum11 = a[s + H4(2 + 1)];
sum11 = bfdotadd(sum11, n[s + H4(2 + 0)], m[s + H4(2 + 0)]);
sum11 = bfdotadd(sum11, n[s + H4(2 + 1)], m[s + H4(2 + 1)]);
sum11 = a[s + H4(2 + 1)];
sum11 = bfdotadd_ebf(sum11, n[s + H4(2 + 0)], m[s + H4(2 + 0)], &fpst, &fpst_odd);
sum11 = bfdotadd_ebf(sum11, n[s + H4(2 + 1)], m[s + H4(2 + 1)], &fpst, &fpst_odd);
d[s + H4(0 + 0)] = sum00;
d[s + H4(0 + 1)] = sum01;
d[s + H4(2 + 0)] = sum10;
d[s + H4(2 + 1)] = sum11;
d[s + H4(0 + 0)] = sum00;
d[s + H4(0 + 1)] = sum01;
d[s + H4(2 + 0)] = sum10;
d[s + H4(2 + 1)] = sum11;
}
} else {
for (s = 0; s < opr_sz / 4; s += 4) {
float32 sum00, sum01, sum10, sum11;
/*
* Process the entire segment at once, writing back the
* results only after we've consumed all of the inputs.
*
* Key to indices by column:
* i j i k j k
*/
sum00 = a[s + H4(0 + 0)];
sum00 = bfdotadd(sum00, n[s + H4(0 + 0)], m[s + H4(0 + 0)], &fpst);
sum00 = bfdotadd(sum00, n[s + H4(0 + 1)], m[s + H4(0 + 1)], &fpst);
sum01 = a[s + H4(0 + 1)];
sum01 = bfdotadd(sum01, n[s + H4(0 + 0)], m[s + H4(2 + 0)], &fpst);
sum01 = bfdotadd(sum01, n[s + H4(0 + 1)], m[s + H4(2 + 1)], &fpst);
sum10 = a[s + H4(2 + 0)];
sum10 = bfdotadd(sum10, n[s + H4(2 + 0)], m[s + H4(0 + 0)], &fpst);
sum10 = bfdotadd(sum10, n[s + H4(2 + 1)], m[s + H4(0 + 1)], &fpst);
sum11 = a[s + H4(2 + 1)];
sum11 = bfdotadd(sum11, n[s + H4(2 + 0)], m[s + H4(2 + 0)], &fpst);
sum11 = bfdotadd(sum11, n[s + H4(2 + 1)], m[s + H4(2 + 1)], &fpst);
d[s + H4(0 + 0)] = sum00;
d[s + H4(0 + 1)] = sum01;
d[s + H4(2 + 0)] = sum10;
d[s + H4(2 + 1)] = sum11;
}
}
clear_tail(d, opr_sz, simd_maxsz(desc));
}

37
target/arm/tcg/vec_internal.h
View File

@ -223,13 +223,46 @@ int64_t do_sqrdmlah_d(int64_t, int64_t, int64_t, bool, bool);
* bfdotadd:
* @sum: addend
* @e1, @e2: multiplicand vectors
* @fpst: floating-point status to use
*
* BFloat16 2-way dot product of @e1 & @e2, accumulating with @sum.
* The @e1 and @e2 operands correspond to the 32-bit source vector
* slots and contain two Bfloat16 values each.
*
* Corresponds to the ARM pseudocode function BFDotAdd.
* Corresponds to the ARM pseudocode function BFDotAdd, specialized
* for the FPCR.EBF == 0 case.
*/
float32 bfdotadd(float32 sum, uint32_t e1, uint32_t e2);
float32 bfdotadd(float32 sum, uint32_t e1, uint32_t e2, float_status *fpst);
/**
* bfdotadd_ebf:
* @sum: addend
* @e1, @e2: multiplicand vectors
* @fpst: floating-point status to use
* @fpst_odd: floating-point status to use for round-to-odd operations
*
* BFloat16 2-way dot product of @e1 & @e2, accumulating with @sum.
* The @e1 and @e2 operands correspond to the 32-bit source vector
* slots and contain two Bfloat16 values each.
*
* Corresponds to the ARM pseudocode function BFDotAdd, specialized
* for the FPCR.EBF == 1 case.
*/
float32 bfdotadd_ebf(float32 sum, uint32_t e1, uint32_t e2,
float_status *fpst, float_status *fpst_odd);
/**
* is_ebf:
* @env: CPU state
* @statusp: pointer to floating point status to fill in
* @oddstatusp: pointer to floating point status to fill in for round-to-odd
*
* Determine whether a BFDotAdd operation should use FPCR.EBF = 0
* or FPCR.EBF = 1 semantics. On return, has initialized *statusp
* and *oddstatusp to suitable float_status arguments to use with either
* bfdotadd() or bfdotadd_ebf().
* Returns true for EBF = 1, false for EBF = 0. (The caller should use this
* to decide whether to call bfdotadd() or bfdotadd_ebf().)
*/
bool is_ebf(CPUARMState *env, float_status *statusp, float_status *oddstatusp);
#endif /* TARGET_ARM_VEC_INTERNAL_H */

12
target/arm/tcg/vfp.decode
View File

@ -141,18 +141,18 @@ VDIV_dp ---- 1110 1.00 .... .... 1011 .0.0 .... @vfp_dnm_d
VFMA_hp ---- 1110 1.10 .... .... 1001 .0. 0 .... @vfp_dnm_s
VFMS_hp ---- 1110 1.10 .... .... 1001 .1. 0 .... @vfp_dnm_s
VFNMA_hp ---- 1110 1.01 .... .... 1001 .0. 0 .... @vfp_dnm_s
VFNMS_hp ---- 1110 1.01 .... .... 1001 .1. 0 .... @vfp_dnm_s
VFNMS_hp ---- 1110 1.01 .... .... 1001 .0. 0 .... @vfp_dnm_s
VFNMA_hp ---- 1110 1.01 .... .... 1001 .1. 0 .... @vfp_dnm_s
VFMA_sp ---- 1110 1.10 .... .... 1010 .0. 0 .... @vfp_dnm_s
VFMS_sp ---- 1110 1.10 .... .... 1010 .1. 0 .... @vfp_dnm_s
VFNMA_sp ---- 1110 1.01 .... .... 1010 .0. 0 .... @vfp_dnm_s
VFNMS_sp ---- 1110 1.01 .... .... 1010 .1. 0 .... @vfp_dnm_s
VFNMS_sp ---- 1110 1.01 .... .... 1010 .0. 0 .... @vfp_dnm_s
VFNMA_sp ---- 1110 1.01 .... .... 1010 .1. 0 .... @vfp_dnm_s
VFMA_dp ---- 1110 1.10 .... .... 1011 .0.0 .... @vfp_dnm_d
VFMS_dp ---- 1110 1.10 .... .... 1011 .1.0 .... @vfp_dnm_d
VFNMA_dp ---- 1110 1.01 .... .... 1011 .0.0 .... @vfp_dnm_d
VFNMS_dp ---- 1110 1.01 .... .... 1011 .1.0 .... @vfp_dnm_d
VFNMS_dp ---- 1110 1.01 .... .... 1011 .0.0 .... @vfp_dnm_d
VFNMA_dp ---- 1110 1.01 .... .... 1011 .1.0 .... @vfp_dnm_d
VMOV_imm_hp ---- 1110 1.11 .... .... 1001 0000 .... \
vd=%vd_sp imm=%vmov_imm

8
target/arm/vfp_helper.c
View File

@ -254,6 +254,10 @@ static void vfp_set_fpcr_masked(CPUARMState *env, uint32_t val, uint32_t mask)
val &= ~FPCR_FZ16;
}
if (!cpu_isar_feature(aa64_ebf16, cpu)) {
val &= ~FPCR_EBF;
}
vfp_set_fpcr_to_host(env, val, mask);
if (mask & (FPCR_LEN_MASK | FPCR_STRIDE_MASK)) {
@ -278,12 +282,12 @@ static void vfp_set_fpcr_masked(CPUARMState *env, uint32_t val, uint32_t mask)
* We don't implement trapped exception handling, so the
* trap enable bits, IDE|IXE|UFE|OFE|DZE|IOE are all RAZ/WI (not RES0!)
*
* The FPCR bits we keep in vfp.fpcr are AHP, DN, FZ, RMode
* The FPCR bits we keep in vfp.fpcr are AHP, DN, FZ, RMode, EBF
* and FZ16. Len, Stride and LTPSIZE we just handled. Store those bits
* there, and zero any of the other FPCR bits and the RES0 and RAZ/WI
* bits.
*/
val &= FPCR_AHP | FPCR_DN | FPCR_FZ | FPCR_RMODE_MASK | FPCR_FZ16;
val &= FPCR_AHP | FPCR_DN | FPCR_FZ | FPCR_RMODE_MASK | FPCR_FZ16 | FPCR_EBF;
env->vfp.fpcr &= ~mask;
env->vfp.fpcr |= val;
}