@@ -1138,6 +1138,8 @@ F: include/hw/intc/loongarch_*.h
F: hw/intc/loongarch_*.c
F: include/hw/pci-host/ls7a.h
F: hw/rtc/ls7a_rtc.c
+F: include/hw/acpi/ls7a.h
+F: hw/acpi/ls7a.c
M68K Machines
-------------
@@ -12,6 +12,10 @@ config ACPI_X86
select ACPI_PCIHP
select ACPI_ERST
+config ACPI_LOONGARCH
+ bool
+ select ACPI
+
config ACPI_X86_ICH
bool
select ACPI_X86
new file mode 100644
@@ -0,0 +1,374 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch ACPI implementation
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "sysemu/sysemu.h"
+#include "hw/hw.h"
+#include "hw/irq.h"
+#include "sysemu/reset.h"
+#include "sysemu/runstate.h"
+#include "hw/acpi/acpi.h"
+#include "hw/acpi/ls7a.h"
+#include "hw/nvram/fw_cfg.h"
+#include "qemu/config-file.h"
+#include "qapi/opts-visitor.h"
+#include "qapi/qapi-events-run-state.h"
+#include "qapi/error.h"
+#include "hw/pci-host/ls7a.h"
+#include "hw/mem/pc-dimm.h"
+#include "hw/mem/nvdimm.h"
+#include "migration/vmstate.h"
+
+static void ls7a_pm_update_sci_fn(ACPIREGS *regs)
+{
+ LS7APMState *pm = container_of(regs, LS7APMState, acpi_regs);
+ acpi_update_sci(&pm->acpi_regs, pm->irq);
+}
+
+static uint64_t ls7a_gpe_readb(void *opaque, hwaddr addr, unsigned width)
+{
+ LS7APMState *pm = opaque;
+ return acpi_gpe_ioport_readb(&pm->acpi_regs, addr);
+}
+
+static void ls7a_gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
+ unsigned width)
+{
+ LS7APMState *pm = opaque;
+ acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val);
+ acpi_update_sci(&pm->acpi_regs, pm->irq);
+}
+
+static const MemoryRegionOps ls7a_gpe_ops = {
+ .read = ls7a_gpe_readb,
+ .write = ls7a_gpe_writeb,
+ .valid.min_access_size = 1,
+ .valid.max_access_size = 8,
+ .impl.min_access_size = 1,
+ .impl.max_access_size = 1,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+#define VMSTATE_GPE_ARRAY(_field, _state) \
+ { \
+ .name = (stringify(_field)), \
+ .version_id = 0, \
+ .num = ACPI_GPE0_LEN, \
+ .info = &vmstate_info_uint8, \
+ .size = sizeof(uint8_t), \
+ .flags = VMS_ARRAY | VMS_POINTER, \
+ .offset = vmstate_offset_pointer(_state, _field, uint8_t), \
+ }
+
+static uint64_t ls7a_reset_readw(void *opaque, hwaddr addr, unsigned width)
+{
+ return 0;
+}
+
+static void ls7a_reset_writew(void *opaque, hwaddr addr, uint64_t val,
+ unsigned width)
+{
+ if (val & 1) {
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+ return;
+ }
+}
+
+static const MemoryRegionOps ls7a_reset_ops = {
+ .read = ls7a_reset_readw,
+ .write = ls7a_reset_writew,
+ .valid.min_access_size = 4,
+ .valid.max_access_size = 4,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+const VMStateDescription vmstate_ls7a_pm = {
+ .name = "ls7a_pm",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16(acpi_regs.pm1.evt.sts, LS7APMState),
+ VMSTATE_UINT16(acpi_regs.pm1.evt.en, LS7APMState),
+ VMSTATE_UINT16(acpi_regs.pm1.cnt.cnt, LS7APMState),
+ VMSTATE_TIMER_PTR(acpi_regs.tmr.timer, LS7APMState),
+ VMSTATE_INT64(acpi_regs.tmr.overflow_time, LS7APMState),
+ VMSTATE_GPE_ARRAY(acpi_regs.gpe.sts, LS7APMState),
+ VMSTATE_GPE_ARRAY(acpi_regs.gpe.en, LS7APMState),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static inline int64_t acpi_pm_tmr_get_clock(void)
+{
+ return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), PM_TIMER_FREQUENCY,
+ NANOSECONDS_PER_SECOND);
+}
+
+static uint32_t acpi_pm_tmr_get(ACPIREGS *ar)
+{
+ uint32_t d = acpi_pm_tmr_get_clock();
+ return d & 0xffffff;
+}
+
+static void acpi_pm_tmr_timer(void *opaque)
+{
+ ACPIREGS *ar = opaque;
+ qemu_system_wakeup_request(QEMU_WAKEUP_REASON_PMTIMER, NULL);
+ ar->tmr.update_sci(ar);
+}
+
+static uint64_t acpi_pm_tmr_read(void *opaque, hwaddr addr, unsigned width)
+{
+ return acpi_pm_tmr_get(opaque);
+}
+
+static void acpi_pm_tmr_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned width)
+{
+}
+
+static const MemoryRegionOps acpi_pm_tmr_ops = {
+ .read = acpi_pm_tmr_read,
+ .write = acpi_pm_tmr_write,
+ .valid.min_access_size = 4,
+ .valid.max_access_size = 4,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void ls7a_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
+ MemoryRegion *parent, uint64_t offset)
+{
+ ar->tmr.update_sci = update_sci;
+ ar->tmr.timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, acpi_pm_tmr_timer, ar);
+ memory_region_init_io(&ar->tmr.io, memory_region_owner(parent),
+ &acpi_pm_tmr_ops, ar, "acpi-tmr", 4);
+ memory_region_add_subregion(parent, offset, &ar->tmr.io);
+}
+
+static void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val)
+{
+ uint16_t pm1_sts = acpi_pm1_evt_get_sts(ar);
+ if (pm1_sts & val & ACPI_BITMASK_TIMER_STATUS) {
+ /* if TMRSTS is reset, then compute the new overflow time */
+ acpi_pm_tmr_calc_overflow_time(ar);
+ }
+ ar->pm1.evt.sts &= ~val;
+}
+
+static uint64_t acpi_pm_evt_read(void *opaque, hwaddr addr, unsigned width)
+{
+ ACPIREGS *ar = opaque;
+ switch (addr) {
+ case 0:
+ return acpi_pm1_evt_get_sts(ar);
+ case 4:
+ return ar->pm1.evt.en;
+ default:
+ return 0;
+ }
+}
+
+static void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val)
+{
+ ar->pm1.evt.en = val;
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC,
+ val & ACPI_BITMASK_RT_CLOCK_ENABLE);
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER,
+ val & ACPI_BITMASK_TIMER_ENABLE);
+}
+
+static void acpi_pm_evt_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned width)
+{
+ ACPIREGS *ar = opaque;
+ switch (addr) {
+ case 0:
+ acpi_pm1_evt_write_sts(ar, val);
+ ar->pm1.evt.update_sci(ar);
+ break;
+ case 4:
+ acpi_pm1_evt_write_en(ar, val);
+ ar->pm1.evt.update_sci(ar);
+ break;
+ }
+}
+
+static const MemoryRegionOps acpi_pm_evt_ops = {
+ .read = acpi_pm_evt_read,
+ .write = acpi_pm_evt_write,
+ .valid.min_access_size = 1,
+ .valid.max_access_size = 4,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void ls7a_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
+ MemoryRegion *parent, uint64_t offset)
+{
+ ar->pm1.evt.update_sci = update_sci;
+ memory_region_init_io(&ar->pm1.evt.io, memory_region_owner(parent),
+ &acpi_pm_evt_ops, ar, "acpi-evt", 8);
+ memory_region_add_subregion(parent, offset, &ar->pm1.evt.io);
+}
+
+static uint64_t acpi_pm_cnt_read(void *opaque, hwaddr addr, unsigned width)
+{
+ ACPIREGS *ar = opaque;
+ return ar->pm1.cnt.cnt;
+}
+
+/* ACPI PM1aCNT */
+static void acpi_pm1_cnt_write(ACPIREGS *ar, uint16_t val)
+{
+ ar->pm1.cnt.cnt = val & ~(ACPI_BITMASK_SLEEP_ENABLE);
+
+ if (val & ACPI_BITMASK_SLEEP_ENABLE) {
+ /* Change suspend type */
+ uint16_t sus_typ = (val >> 10) & 7;
+ switch (sus_typ) {
+ /* Not support s3 s4 yet */
+ case 7: /* Soft power off */
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static void acpi_pm_cnt_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned width)
+{
+ acpi_pm1_cnt_write(opaque, val);
+}
+
+static const MemoryRegionOps acpi_pm_cnt_ops = {
+ .read = acpi_pm_cnt_read,
+ .write = acpi_pm_cnt_write,
+ .valid.min_access_size = 1,
+ .valid.max_access_size = 4,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void acpi_notify_wakeup(Notifier *notifier, void *data)
+{
+ ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup);
+ WakeupReason *reason = data;
+
+ switch (*reason) {
+ case QEMU_WAKEUP_REASON_RTC:
+ ar->pm1.evt.sts |=
+ (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_RT_CLOCK_STATUS);
+ break;
+ case QEMU_WAKEUP_REASON_PMTIMER:
+ ar->pm1.evt.sts |=
+ (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_TIMER_STATUS);
+ break;
+ case QEMU_WAKEUP_REASON_OTHER:
+ /*
+ * ACPI_BITMASK_WAKE_STATUS should be set on resume.
+ * Pretend that resume was caused by power button
+ */
+ ar->pm1.evt.sts |=
+ (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_POWER_BUTTON_STATUS);
+ break;
+ default:
+ break;
+ }
+}
+
+static void ls7a_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent,
+ uint64_t offset)
+{
+ ar->wakeup.notify = acpi_notify_wakeup;
+ qemu_register_wakeup_notifier(&ar->wakeup);
+ memory_region_init_io(&ar->pm1.cnt.io, memory_region_owner(parent),
+ &acpi_pm_cnt_ops, ar, "acpi-cnt", 4);
+ memory_region_add_subregion(parent, offset, &ar->pm1.cnt.io);
+}
+
+static void ls7a_pm_reset(DeviceState *d)
+{
+ LS7APMState *pm = LS7A_PM(d);
+
+ 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);
+
+ acpi_update_sci(&pm->acpi_regs, pm->irq);
+}
+
+static void pm_powerdown_req(Notifier *n, void *opaque)
+{
+ LS7APMState *pm = container_of(n, LS7APMState, powerdown_notifier);
+
+ acpi_pm1_evt_power_down(&pm->acpi_regs);
+}
+
+void ls7a_pm_init(DeviceState *ls7a_pm, qemu_irq pm_irq)
+{
+ LS7APMState *pm = LS7A_PM(ls7a_pm);
+ pm->irq = pm_irq;
+}
+
+static void ls7a_pm_realize(DeviceState *dev, Error **errp)
+{
+ LS7APMState *pm = LS7A_PM(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+
+ /*
+ * ls7a board acpi hardware info, including
+ * acpi system io base address
+ * acpi gpe length
+ * acpi sci irq number
+ */
+
+ memory_region_init(&pm->iomem, OBJECT(pm), "ls7a_pm", ACPI_IO_SIZE);
+ sysbus_init_mmio(sbd, &pm->iomem);
+
+ ls7a_pm_tmr_init(&pm->acpi_regs, ls7a_pm_update_sci_fn,
+ &pm->iomem, LS7A_PM_TMR_BLK);
+ ls7a_pm1_evt_init(&pm->acpi_regs, ls7a_pm_update_sci_fn,
+ &pm->iomem, LS7A_PM_EVT_BLK);
+ ls7a_pm1_cnt_init(&pm->acpi_regs, &pm->iomem, LS7A_PM_CNT_BLK);
+
+ acpi_gpe_init(&pm->acpi_regs, ACPI_GPE0_LEN);
+ memory_region_init_io(&pm->iomem_gpe, OBJECT(pm), &ls7a_gpe_ops, pm,
+ "acpi-gpe0", ACPI_GPE0_LEN);
+ sysbus_init_mmio(sbd, &pm->iomem_gpe);
+
+ memory_region_init_io(&pm->iomem_reset, OBJECT(pm),
+ &ls7a_reset_ops, pm, "acpi-reset", 4);
+ sysbus_init_mmio(sbd, &pm->iomem_reset);
+
+ pm->powerdown_notifier.notify = pm_powerdown_req;
+ qemu_register_powerdown_notifier(&pm->powerdown_notifier);
+}
+
+static void ls7a_pm_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = ls7a_pm_realize;
+ dc->reset = ls7a_pm_reset;
+ dc->desc = "PM";
+ dc->vmsd = &vmstate_ls7a_pm;
+}
+
+static const TypeInfo ls7a_pm_info = {
+ .name = TYPE_LS7A_PM,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(LS7APMState),
+ .class_init = ls7a_pm_class_init,
+};
+
+static void ls7a_pm_register_types(void)
+{
+ type_register_static(&ls7a_pm_info);
+}
+
+type_init(ls7a_pm_register_types)
@@ -25,6 +25,7 @@ acpi_ss.add(when: 'CONFIG_ACPI_X86_ICH', if_true: files('ich9.c', 'tco.c'))
acpi_ss.add(when: 'CONFIG_ACPI_ERST', if_true: files('erst.c'))
acpi_ss.add(when: 'CONFIG_IPMI', if_true: files('ipmi.c'), if_false: files('ipmi-stub.c'))
acpi_ss.add(when: 'CONFIG_PC', if_false: files('acpi-x86-stub.c'))
+acpi_ss.add(when: 'CONFIG_ACPI_LOONGARCH', if_true: files('ls7a.c'))
if have_tpm
acpi_ss.add(files('tpm.c'))
endif
@@ -14,3 +14,5 @@ config LOONGARCH_VIRT
select LOONGARCH_PCH_MSI
select LOONGARCH_EXTIOI
select LS7A_RTC
+ select ACPI_LOONGARCH
+ select ACPI_PCI
@@ -28,7 +28,8 @@
#include "hw/pci-host/ls7a.h"
#include "hw/pci-host/gpex.h"
#include "hw/misc/unimp.h"
-
+#include "hw/acpi/aml-build.h"
+#include "qapi/qapi-visit-common.h"
#include "target/loongarch/cpu.h"
static struct _loaderparams {
@@ -63,11 +64,11 @@ static int64_t load_kernel_info(void)
static void loongarch_devices_init(DeviceState *pch_pic)
{
- DeviceState *gpex_dev;
+ DeviceState *gpex_dev, *ls7a_pm;
SysBusDevice *d;
PCIBus *pci_bus;
MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg;
- MemoryRegion *mmio_alias, *mmio_reg;
+ MemoryRegion *mmio_alias, *mmio_reg, *pm_reg;
int i;
gpex_dev = qdev_new(TYPE_GPEX_HOST);
@@ -133,6 +134,18 @@ static void loongarch_devices_init(DeviceState *pch_pic)
sysbus_create_simple("ls7a_rtc", LS7A_RTC_REG_BASE,
qdev_get_gpio_in(pch_pic,
LS7A_RTC_IRQ - PCH_PIC_IRQ_OFFSET));
+ /* Init pm */
+ ls7a_pm = qdev_new(TYPE_LS7A_PM);
+ d = SYS_BUS_DEVICE(ls7a_pm);
+ sysbus_realize_and_unref(d, &error_fatal);
+ ls7a_pm_init(ls7a_pm, qdev_get_gpio_in(pch_pic,
+ ACPI_SCI_IRQ - PCH_PIC_IRQ_OFFSET));
+ pm_reg = sysbus_mmio_get_region(d, 0);
+ memory_region_add_subregion(get_system_memory(), ACPI_IO_BASE, pm_reg);
+ memory_region_add_subregion(pm_reg, LS7A_GPE0_STS_REG,
+ sysbus_mmio_get_region(d, 1));
+ memory_region_add_subregion(pm_reg, LS7A_GPE0_RESET_REG,
+ sysbus_mmio_get_region(d, 2));
}
static void loongarch_irq_init(LoongArchMachineState *lams)
new file mode 100644
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU GMCH/LS7A PCI PM Emulation
+ *
+ * Copyright (C) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef HW_ACPI_LS7A_H
+#define HW_ACPI_LS7A_H
+
+#include "hw/acpi/acpi.h"
+#include "hw/sysbus.h"
+
+#define LS7A_ACPI_IO_BASE 0x800
+#define LS7A_ACPI_IO_SIZE 0x100
+#define LS7A_PM_EVT_BLK (0x0C) /* 4 bytes */
+#define LS7A_PM_CNT_BLK (0x14) /* 2 bytes */
+#define LS7A_GPE0_STS_REG (0x28) /* 4 bytes */
+#define LS7A_GPE0_ENA_REG (0x2C) /* 4 bytes */
+#define LS7A_GPE0_RESET_REG (0x30) /* 4 bytes */
+#define LS7A_PM_TMR_BLK (0x18) /* 4 bytes */
+#define LS7A_GPE0_LEN (8)
+#define ACPI_IO_BASE (LS7A_ACPI_REG_BASE)
+#define ACPI_GPE0_LEN (LS7A_GPE0_LEN)
+#define ACPI_IO_SIZE (LS7A_ACPI_IO_SIZE)
+#define ACPI_SCI_IRQ (LS7A_SCI_IRQ)
+
+typedef struct LS7APMState {
+ SysBusDevice parent_obj;
+ /*
+ * In ls7a spec says that pm1_cnt register is 32bit width and
+ * that the upper 16bits are reserved and unused.
+ * PM1a_CNT_BLK = 2 in FADT so it is defined as uint16_t.
+ */
+ ACPIREGS acpi_regs;
+
+ MemoryRegion iomem;
+ MemoryRegion iomem_gpe;
+ MemoryRegion iomem_reset;
+
+ qemu_irq irq; /* SCI */
+
+ uint32_t pm_io_base;
+ Notifier powerdown_notifier;
+} LS7APMState;
+
+#define TYPE_LS7A_PM "ls7a_pm"
+DECLARE_INSTANCE_CHECKER(struct LS7APMState, LS7A_PM, TYPE_LS7A_PM)
+
+void ls7a_pm_init(DeviceState *ls7a_pm, qemu_irq irq);
+
+extern const VMStateDescription vmstate_ls7a_pm;
+#endif /* HW_ACPI_LS7A_H */
@@ -11,6 +11,7 @@
#include "hw/pci/pci.h"
#include "hw/pci/pcie_host.h"
#include "hw/pci-host/pam.h"
+#include "hw/acpi/ls7a.h"
#include "qemu/units.h"
#include "qemu/range.h"
#include "qom/object.h"
@@ -21,6 +22,9 @@
#define LS7A_PCI_IO_BASE 0x18004000UL
#define LS7A_PCI_IO_SIZE 0xC000
+#define LS7A_PCI_MEM_BASE 0x40000000UL
+#define LS7A_PCI_MEM_SIZE 0x40000000UL
+
#define LS7A_PCH_REG_BASE 0x10000000UL
#define LS7A_IOAPIC_REG_BASE (LS7A_PCH_REG_BASE)
#define LS7A_PCH_MSI_ADDR_LOW 0x2FF00000UL
@@ -39,4 +43,6 @@
#define LS7A_MISC_REG_BASE (LS7A_PCH_REG_BASE + 0x00080000)
#define LS7A_RTC_REG_BASE (LS7A_MISC_REG_BASE + 0x00050100)
#define LS7A_RTC_LEN 0x100
+#define LS7A_ACPI_REG_BASE (LS7A_MISC_REG_BASE + 0x00050000)
+#define LS7A_SCI_IRQ (PCH_PIC_IRQ_OFFSET + 4)
#endif