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qemu/hw/acpi/ich9.c
Felipe Franciosi 64a7b8de42 qom/object: Use common get/set uint helpers 
Several objects implemented their own uint property getters and setters,
despite them being straightforward (without any checks/validations on
the values themselves) and identical across objects. This makes use of
an enhanced API for object_property_add_uintXX_ptr() which offers
default setters.

Some of these setters used to update the value even if the type visit
failed (eg. because the value being set overflowed over the given type).
The new setter introduces a check for these errors, not updating the
value if an error occurred. The error is propagated.

Signed-off-by: Felipe Franciosi <felipe@nutanix.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-03-16 23:02:24 +01:00

491 lines
16 KiB
C
Raw Blame History

/*
* ACPI implementation
*
* Copyright (c) 2006 Fabrice Bellard
* Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
* Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
*
* This is based on acpi.c.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "hw/pci/pci.h"
#include "migration/vmstate.h"
#include "qemu/timer.h"
#include "hw/core/cpu.h"
#include "sysemu/reset.h"
#include "sysemu/runstate.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/tco.h"
#include "exec/address-spaces.h"
#include "hw/i386/ich9.h"
#include "hw/mem/pc-dimm.h"
#include "hw/mem/nvdimm.h"
//#define DEBUG
#ifdef DEBUG
#define ICH9_DEBUG(fmt, ...) \
do { printf("%s "fmt, __func__, ## __VA_ARGS__); } while (0)
#else
#define ICH9_DEBUG(fmt, ...) do { } while (0)
#endif
static void ich9_pm_update_sci_fn(ACPIREGS *regs)
{
ICH9LPCPMRegs *pm = container_of(regs, ICH9LPCPMRegs, acpi_regs);
acpi_update_sci(&pm->acpi_regs, pm->irq);
}
static uint64_t ich9_gpe_readb(void *opaque, hwaddr addr, unsigned width)
{
ICH9LPCPMRegs *pm = opaque;
return acpi_gpe_ioport_readb(&pm->acpi_regs, addr);
}
static void ich9_gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
unsigned width)
{
ICH9LPCPMRegs *pm = opaque;
acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val);
acpi_update_sci(&pm->acpi_regs, pm->irq);
}
static const MemoryRegionOps ich9_gpe_ops = {
.read = ich9_gpe_readb,
.write = ich9_gpe_writeb,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.impl.min_access_size = 1,
.impl.max_access_size = 1,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static uint64_t ich9_smi_readl(void *opaque, hwaddr addr, unsigned width)
{
ICH9LPCPMRegs *pm = opaque;
switch (addr) {
case 0:
return pm->smi_en;
case 4:
return pm->smi_sts;
default:
return 0;
}
}
static void ich9_smi_writel(void *opaque, hwaddr addr, uint64_t val,
unsigned width)
{
ICH9LPCPMRegs *pm = opaque;
TCOIORegs *tr = &pm->tco_regs;
uint64_t tco_en;
switch (addr) {
case 0:
tco_en = pm->smi_en & ICH9_PMIO_SMI_EN_TCO_EN;
/* once TCO_LOCK bit is set, TCO_EN bit cannot be overwritten */
if (tr->tco.cnt1 & TCO_LOCK) {
val = (val & ~ICH9_PMIO_SMI_EN_TCO_EN) | tco_en;
}
pm->smi_en &= ~pm->smi_en_wmask;
pm->smi_en |= (val & pm->smi_en_wmask);
break;
}
}
static const MemoryRegionOps ich9_smi_ops = {
.read = ich9_smi_readl,
.write = ich9_smi_writel,
.valid.min_access_size = 4,
.valid.max_access_size = 4,
.endianness = DEVICE_LITTLE_ENDIAN,
};
void ich9_pm_iospace_update(ICH9LPCPMRegs *pm, uint32_t pm_io_base)
{
ICH9_DEBUG("to 0x%x\n", pm_io_base);
assert((pm_io_base & ICH9_PMIO_MASK) == 0);
pm->pm_io_base = pm_io_base;
memory_region_transaction_begin();
memory_region_set_enabled(&pm->io, pm->pm_io_base != 0);
memory_region_set_address(&pm->io, pm->pm_io_base);
memory_region_transaction_commit();
}
static int ich9_pm_post_load(void *opaque, int version_id)
{
ICH9LPCPMRegs *pm = opaque;
uint32_t pm_io_base = pm->pm_io_base;
pm->pm_io_base = 0;
ich9_pm_iospace_update(pm, pm_io_base);
return 0;
}
#define VMSTATE_GPE_ARRAY(_field, _state) \
{ \
.name = (stringify(_field)), \
.version_id = 0, \
.num = ICH9_PMIO_GPE0_LEN, \
.info = &vmstate_info_uint8, \
.size = sizeof(uint8_t), \
.flags = VMS_ARRAY | VMS_POINTER, \
.offset = vmstate_offset_pointer(_state, _field, uint8_t), \
}
static bool vmstate_test_use_memhp(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
return s->acpi_memory_hotplug.is_enabled;
}
static const VMStateDescription vmstate_memhp_state = {
.name = "ich9_pm/memhp",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.needed = vmstate_test_use_memhp,
.fields = (VMStateField[]) {
VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, ICH9LPCPMRegs),
VMSTATE_END_OF_LIST()
}
};
static bool vmstate_test_use_tco(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
return s->enable_tco;
}
static const VMStateDescription vmstate_tco_io_state = {
.name = "ich9_pm/tco",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.needed = vmstate_test_use_tco,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(tco_regs, ICH9LPCPMRegs, 1, vmstate_tco_io_sts,
TCOIORegs),
VMSTATE_END_OF_LIST()
}
};
static bool vmstate_test_use_cpuhp(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
return !s->cpu_hotplug_legacy;
}
static int vmstate_cpuhp_pre_load(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
Object *obj = OBJECT(s->gpe_cpu.device);
object_property_set_bool(obj, false, "cpu-hotplug-legacy", &error_abort);
return 0;
}
static const VMStateDescription vmstate_cpuhp_state = {
.name = "ich9_pm/cpuhp",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.needed = vmstate_test_use_cpuhp,
.pre_load = vmstate_cpuhp_pre_load,
.fields = (VMStateField[]) {
VMSTATE_CPU_HOTPLUG(cpuhp_state, ICH9LPCPMRegs),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_ich9_pm = {
.name = "ich9_pm",
.version_id = 1,
.minimum_version_id = 1,
.post_load = ich9_pm_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT16(acpi_regs.pm1.evt.sts, ICH9LPCPMRegs),
VMSTATE_UINT16(acpi_regs.pm1.evt.en, ICH9LPCPMRegs),
VMSTATE_UINT16(acpi_regs.pm1.cnt.cnt, ICH9LPCPMRegs),
VMSTATE_TIMER_PTR(acpi_regs.tmr.timer, ICH9LPCPMRegs),
VMSTATE_INT64(acpi_regs.tmr.overflow_time, ICH9LPCPMRegs),
VMSTATE_GPE_ARRAY(acpi_regs.gpe.sts, ICH9LPCPMRegs),
VMSTATE_GPE_ARRAY(acpi_regs.gpe.en, ICH9LPCPMRegs),
VMSTATE_UINT32(smi_en, ICH9LPCPMRegs),
VMSTATE_UINT32(smi_sts, ICH9LPCPMRegs),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription*[]) {
&vmstate_memhp_state,
&vmstate_tco_io_state,
&vmstate_cpuhp_state,
NULL
}
};
static void pm_reset(void *opaque)
{
ICH9LPCPMRegs *pm = opaque;
ich9_pm_iospace_update(pm, 0);
acpi_pm1_evt_reset(&pm->acpi_regs);
acpi_pm1_cnt_reset(&pm->acpi_regs);
acpi_pm_tmr_reset(&pm->acpi_regs);
acpi_gpe_reset(&pm->acpi_regs);
pm->smi_en = 0;
if (!pm->smm_enabled) {
/* Mark SMM as already inited to prevent SMM from running. */
pm->smi_en |= ICH9_PMIO_SMI_EN_APMC_EN;
}
pm->smi_en_wmask = ~0;
acpi_update_sci(&pm->acpi_regs, pm->irq);
}
static void pm_powerdown_req(Notifier *n, void *opaque)
{
ICH9LPCPMRegs *pm = container_of(n, ICH9LPCPMRegs, powerdown_notifier);
acpi_pm1_evt_power_down(&pm->acpi_regs);
}
void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm,
bool smm_enabled,
qemu_irq sci_irq)
{
memory_region_init(&pm->io, OBJECT(lpc_pci), "ich9-pm", ICH9_PMIO_SIZE);
memory_region_set_enabled(&pm->io, false);
memory_region_add_subregion(pci_address_space_io(lpc_pci),
0, &pm->io);
acpi_pm_tmr_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
acpi_pm1_evt_init(&pm->acpi_regs, ich9_pm_update_sci_fn, &pm->io);
acpi_pm1_cnt_init(&pm->acpi_regs, &pm->io, pm->disable_s3, pm->disable_s4,
pm->s4_val);
acpi_gpe_init(&pm->acpi_regs, ICH9_PMIO_GPE0_LEN);
memory_region_init_io(&pm->io_gpe, OBJECT(lpc_pci), &ich9_gpe_ops, pm,
"acpi-gpe0", ICH9_PMIO_GPE0_LEN);
memory_region_add_subregion(&pm->io, ICH9_PMIO_GPE0_STS, &pm->io_gpe);
memory_region_init_io(&pm->io_smi, OBJECT(lpc_pci), &ich9_smi_ops, pm,
"acpi-smi", 8);
memory_region_add_subregion(&pm->io, ICH9_PMIO_SMI_EN, &pm->io_smi);
pm->smm_enabled = smm_enabled;
pm->enable_tco = true;
acpi_pm_tco_init(&pm->tco_regs, &pm->io);
pm->irq = sci_irq;
qemu_register_reset(pm_reset, pm);
pm->powerdown_notifier.notify = pm_powerdown_req;
qemu_register_powerdown_notifier(&pm->powerdown_notifier);
legacy_acpi_cpu_hotplug_init(pci_address_space_io(lpc_pci),
OBJECT(lpc_pci), &pm->gpe_cpu, ICH9_CPU_HOTPLUG_IO_BASE);
if (pm->acpi_memory_hotplug.is_enabled) {
acpi_memory_hotplug_init(pci_address_space_io(lpc_pci), OBJECT(lpc_pci),
&pm->acpi_memory_hotplug,
ACPI_MEMORY_HOTPLUG_BASE);
}
}
static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ICH9LPCPMRegs *pm = opaque;
uint32_t value = pm->pm_io_base + ICH9_PMIO_GPE0_STS;
visit_type_uint32(v, name, &value, errp);
}
static bool ich9_pm_get_memory_hotplug_support(Object *obj, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
return s->pm.acpi_memory_hotplug.is_enabled;
}
static void ich9_pm_set_memory_hotplug_support(Object *obj, bool value,
Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
s->pm.acpi_memory_hotplug.is_enabled = value;
}
static bool ich9_pm_get_cpu_hotplug_legacy(Object *obj, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
return s->pm.cpu_hotplug_legacy;
}
static void ich9_pm_set_cpu_hotplug_legacy(Object *obj, bool value,
Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
assert(!value);
if (s->pm.cpu_hotplug_legacy && value == false) {
acpi_switch_to_modern_cphp(&s->pm.gpe_cpu, &s->pm.cpuhp_state,
ICH9_CPU_HOTPLUG_IO_BASE);
}
s->pm.cpu_hotplug_legacy = value;
}
static bool ich9_pm_get_enable_tco(Object *obj, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
return s->pm.enable_tco;
}
static void ich9_pm_set_enable_tco(Object *obj, bool value, Error **errp)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
s->pm.enable_tco = value;
}
void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm, Error **errp)
{
static const uint32_t gpe0_len = ICH9_PMIO_GPE0_LEN;
pm->acpi_memory_hotplug.is_enabled = true;
pm->cpu_hotplug_legacy = true;
pm->disable_s3 = 0;
pm->disable_s4 = 0;
pm->s4_val = 2;
object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
&pm->pm_io_base, OBJ_PROP_FLAG_READ, errp);
object_property_add(obj, ACPI_PM_PROP_GPE0_BLK, "uint32",
ich9_pm_get_gpe0_blk,
NULL, NULL, pm, NULL);
object_property_add_uint32_ptr(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
&gpe0_len, OBJ_PROP_FLAG_READ, errp);
object_property_add_bool(obj, "memory-hotplug-support",
ich9_pm_get_memory_hotplug_support,
ich9_pm_set_memory_hotplug_support,
NULL);
object_property_add_bool(obj, "cpu-hotplug-legacy",
ich9_pm_get_cpu_hotplug_legacy,
ich9_pm_set_cpu_hotplug_legacy,
NULL);
object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S3_DISABLED,
&pm->disable_s3, OBJ_PROP_FLAG_READWRITE,
NULL);
object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_DISABLED,
&pm->disable_s4, OBJ_PROP_FLAG_READWRITE,
NULL);
object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_VAL,
&pm->s4_val, OBJ_PROP_FLAG_READWRITE, NULL);
object_property_add_bool(obj, ACPI_PM_PROP_TCO_ENABLED,
ich9_pm_get_enable_tco,
ich9_pm_set_enable_tco,
NULL);
}
void ich9_pm_device_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
!lpc->pm.acpi_memory_hotplug.is_enabled)
error_setg(errp,
"memory hotplug is not enabled: %s.memory-hotplug-support "
"is not set", object_get_typename(OBJECT(lpc)));
}
void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
nvdimm_acpi_plug_cb(hotplug_dev, dev);
} else {
acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
dev, errp);
}
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
if (lpc->pm.cpu_hotplug_legacy) {
legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
} else {
acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp_state, dev, errp);
}
} else {
error_setg(errp, "acpi: device plug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
void ich9_pm_device_unplug_request_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
if (lpc->pm.acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_unplug_request_cb(hotplug_dev,
&lpc->pm.acpi_memory_hotplug, dev,
errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
!lpc->pm.cpu_hotplug_legacy) {
acpi_cpu_unplug_request_cb(hotplug_dev, &lpc->pm.cpuhp_state,
dev, errp);
} else {
error_setg(errp, "acpi: device unplug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
if (lpc->pm.acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_unplug_cb(&lpc->pm.acpi_memory_hotplug, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
!lpc->pm.cpu_hotplug_legacy) {
acpi_cpu_unplug_cb(&lpc->pm.cpuhp_state, dev, errp);
} else {
error_setg(errp, "acpi: device unplug for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
{
ICH9LPCState *s = ICH9_LPC_DEVICE(adev);
acpi_memory_ospm_status(&s->pm.acpi_memory_hotplug, list);
if (!s->pm.cpu_hotplug_legacy) {
acpi_cpu_ospm_status(&s->pm.cpuhp_state, list);
}
}
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