/* * ACPI implementation * * Copyright (c) 2006 Fabrice Bellard * * 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/> */ #include "hw.h" #include "pc.h" #include "apm.h" #include "pm_smbus.h" #include "pci.h" #include "acpi.h" #include "sysemu.h" #include "range.h" #include "ioport.h" //#define DEBUG #ifdef DEBUG # define PIIX4_DPRINTF(format, ...) printf(format, ## __VA_ARGS__) #else # define PIIX4_DPRINTF(format, ...) do { } while (0) #endif #define ACPI_DBG_IO_ADDR 0xb044 #define GPE_BASE 0xafe0 #define GPE_LEN 4 #define PCI_BASE 0xae00 #define PCI_EJ_BASE 0xae08 #define PCI_RMV_BASE 0xae0c #define PIIX4_PCI_HOTPLUG_STATUS 2 struct pci_status { uint32_t up; uint32_t down; }; typedef struct PIIX4PMState { PCIDevice dev; IORange ioport; ACPIPM1EVT pm1a; ACPIPM1CNT pm1_cnt; APMState apm; ACPIPMTimer tmr; PMSMBus smb; uint32_t smb_io_base; qemu_irq irq; qemu_irq smi_irq; int kvm_enabled; Notifier machine_ready; /* for pci hotplug */ ACPIGPE gpe; struct pci_status pci0_status; uint32_t pci0_hotplug_enable; } PIIX4PMState; static void piix4_acpi_system_hot_add_init(PCIBus *bus, PIIX4PMState *s); #define ACPI_ENABLE 0xf1 #define ACPI_DISABLE 0xf0 static void pm_update_sci(PIIX4PMState *s) { int sci_level, pmsts; pmsts = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time); sci_level = (((pmsts & s->pm1a.en) & (ACPI_BITMASK_RT_CLOCK_ENABLE | ACPI_BITMASK_POWER_BUTTON_ENABLE | ACPI_BITMASK_GLOBAL_LOCK_ENABLE | ACPI_BITMASK_TIMER_ENABLE)) != 0) || (((s->gpe.sts[0] & s->gpe.en[0]) & PIIX4_PCI_HOTPLUG_STATUS) != 0); qemu_set_irq(s->irq, sci_level); /* schedule a timer interruption if needed */ acpi_pm_tmr_update(&s->tmr, (s->pm1a.en & ACPI_BITMASK_TIMER_ENABLE) && !(pmsts & ACPI_BITMASK_TIMER_STATUS)); } static void pm_tmr_timer(ACPIPMTimer *tmr) { PIIX4PMState *s = container_of(tmr, PIIX4PMState, tmr); pm_update_sci(s); } static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width, uint64_t val) { PIIX4PMState *s = container_of(ioport, PIIX4PMState, ioport); if (width != 2) { PIIX4_DPRINTF("PM write port=0x%04x width=%d val=0x%08x\n", (unsigned)addr, width, (unsigned)val); } switch(addr) { case 0x00: acpi_pm1_evt_write_sts(&s->pm1a, &s->tmr, val); pm_update_sci(s); break; case 0x02: s->pm1a.en = val; pm_update_sci(s); break; case 0x04: acpi_pm1_cnt_write(&s->pm1a, &s->pm1_cnt, val); break; default: break; } PIIX4_DPRINTF("PM writew port=0x%04x val=0x%04x\n", (unsigned int)addr, (unsigned int)val); } static void pm_ioport_read(IORange *ioport, uint64_t addr, unsigned width, uint64_t *data) { PIIX4PMState *s = container_of(ioport, PIIX4PMState, ioport); uint32_t val; switch(addr) { case 0x00: val = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time); break; case 0x02: val = s->pm1a.en; break; case 0x04: val = s->pm1_cnt.cnt; break; case 0x08: val = acpi_pm_tmr_get(&s->tmr); break; default: val = 0; break; } PIIX4_DPRINTF("PM readw port=0x%04x val=0x%04x\n", (unsigned int)addr, val); *data = val; } static const IORangeOps pm_iorange_ops = { .read = pm_ioport_read, .write = pm_ioport_write, }; static void apm_ctrl_changed(uint32_t val, void *arg) { PIIX4PMState *s = arg; /* ACPI specs 3.0, 4.7.2.5 */ acpi_pm1_cnt_update(&s->pm1_cnt, val == ACPI_ENABLE, val == ACPI_DISABLE); if (s->dev.config[0x5b] & (1 << 1)) { if (s->smi_irq) { qemu_irq_raise(s->smi_irq); } } } static void acpi_dbg_writel(void *opaque, uint32_t addr, uint32_t val) { PIIX4_DPRINTF("ACPI: DBG: 0x%08x\n", val); } static void pm_io_space_update(PIIX4PMState *s) { uint32_t pm_io_base; if (s->dev.config[0x80] & 1) { pm_io_base = le32_to_cpu(*(uint32_t *)(s->dev.config + 0x40)); pm_io_base &= 0xffc0; /* XXX: need to improve memory and ioport allocation */ PIIX4_DPRINTF("PM: mapping to 0x%x\n", pm_io_base); iorange_init(&s->ioport, &pm_iorange_ops, pm_io_base, 64); ioport_register(&s->ioport); } } static void pm_write_config(PCIDevice *d, uint32_t address, uint32_t val, int len) { pci_default_write_config(d, address, val, len); if (range_covers_byte(address, len, 0x80)) pm_io_space_update((PIIX4PMState *)d); } static int vmstate_acpi_post_load(void *opaque, int version_id) { PIIX4PMState *s = opaque; pm_io_space_update(s); return 0; } #define VMSTATE_GPE_ARRAY(_field, _state) \ { \ .name = (stringify(_field)), \ .version_id = 0, \ .num = GPE_LEN, \ .info = &vmstate_info_uint16, \ .size = sizeof(uint16_t), \ .flags = VMS_ARRAY | VMS_POINTER, \ .offset = vmstate_offset_pointer(_state, _field, uint8_t), \ } static const VMStateDescription vmstate_gpe = { .name = "gpe", .version_id = 1, .minimum_version_id = 1, .minimum_version_id_old = 1, .fields = (VMStateField []) { VMSTATE_GPE_ARRAY(sts, ACPIGPE), VMSTATE_GPE_ARRAY(en, ACPIGPE), VMSTATE_END_OF_LIST() } }; static const VMStateDescription vmstate_pci_status = { .name = "pci_status", .version_id = 1, .minimum_version_id = 1, .minimum_version_id_old = 1, .fields = (VMStateField []) { VMSTATE_UINT32(up, struct pci_status), VMSTATE_UINT32(down, struct pci_status), VMSTATE_END_OF_LIST() } }; static const VMStateDescription vmstate_acpi = { .name = "piix4_pm", .version_id = 2, .minimum_version_id = 1, .minimum_version_id_old = 1, .post_load = vmstate_acpi_post_load, .fields = (VMStateField []) { VMSTATE_PCI_DEVICE(dev, PIIX4PMState), VMSTATE_UINT16(pm1a.sts, PIIX4PMState), VMSTATE_UINT16(pm1a.en, PIIX4PMState), VMSTATE_UINT16(pm1_cnt.cnt, PIIX4PMState), VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState), VMSTATE_TIMER(tmr.timer, PIIX4PMState), VMSTATE_INT64(tmr.overflow_time, PIIX4PMState), VMSTATE_STRUCT(gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE), VMSTATE_STRUCT(pci0_status, PIIX4PMState, 2, vmstate_pci_status, struct pci_status), VMSTATE_END_OF_LIST() } }; static void piix4_update_hotplug(PIIX4PMState *s) { PCIDevice *dev = &s->dev; BusState *bus = qdev_get_parent_bus(&dev->qdev); DeviceState *qdev, *next; s->pci0_hotplug_enable = ~0; QLIST_FOREACH_SAFE(qdev, &bus->children, sibling, next) { PCIDeviceInfo *info = container_of(qdev->info, PCIDeviceInfo, qdev); PCIDevice *pdev = DO_UPCAST(PCIDevice, qdev, qdev); int slot = PCI_SLOT(pdev->devfn); if (info->no_hotplug) { s->pci0_hotplug_enable &= ~(1 << slot); } } } static void piix4_reset(void *opaque) { PIIX4PMState *s = opaque; uint8_t *pci_conf = s->dev.config; pci_conf[0x58] = 0; pci_conf[0x59] = 0; pci_conf[0x5a] = 0; pci_conf[0x5b] = 0; if (s->kvm_enabled) { /* Mark SMM as already inited (until KVM supports SMM). */ pci_conf[0x5B] = 0x02; } piix4_update_hotplug(s); } static void piix4_powerdown(void *opaque, int irq, int power_failing) { PIIX4PMState *s = opaque; ACPIPM1EVT *pm1a = s? &s->pm1a: NULL; ACPIPMTimer *tmr = s? &s->tmr: NULL; acpi_pm1_evt_power_down(pm1a, tmr); } static void piix4_pm_machine_ready(Notifier *n, void *opaque) { PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready); uint8_t *pci_conf; pci_conf = s->dev.config; pci_conf[0x5f] = (isa_is_ioport_assigned(0x378) ? 0x80 : 0) | 0x10; pci_conf[0x63] = 0x60; pci_conf[0x67] = (isa_is_ioport_assigned(0x3f8) ? 0x08 : 0) | (isa_is_ioport_assigned(0x2f8) ? 0x90 : 0); } static int piix4_pm_initfn(PCIDevice *dev) { PIIX4PMState *s = DO_UPCAST(PIIX4PMState, dev, dev); uint8_t *pci_conf; pci_conf = s->dev.config; pci_conf[0x06] = 0x80; pci_conf[0x07] = 0x02; pci_conf[0x09] = 0x00; pci_conf[0x3d] = 0x01; // interrupt pin 1 pci_conf[0x40] = 0x01; /* PM io base read only bit */ /* APM */ apm_init(&s->apm, apm_ctrl_changed, s); register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s); if (s->kvm_enabled) { /* Mark SMM as already inited to prevent SMM from running. KVM does not * support SMM mode. */ pci_conf[0x5B] = 0x02; } /* XXX: which specification is used ? The i82731AB has different mappings */ pci_conf[0x90] = s->smb_io_base | 1; pci_conf[0x91] = s->smb_io_base >> 8; pci_conf[0xd2] = 0x09; register_ioport_write(s->smb_io_base, 64, 1, smb_ioport_writeb, &s->smb); register_ioport_read(s->smb_io_base, 64, 1, smb_ioport_readb, &s->smb); acpi_pm_tmr_init(&s->tmr, pm_tmr_timer); acpi_gpe_init(&s->gpe, GPE_LEN); qemu_system_powerdown = *qemu_allocate_irqs(piix4_powerdown, s, 1); pm_smbus_init(&s->dev.qdev, &s->smb); s->machine_ready.notify = piix4_pm_machine_ready; qemu_add_machine_init_done_notifier(&s->machine_ready); qemu_register_reset(piix4_reset, s); piix4_acpi_system_hot_add_init(dev->bus, s); return 0; } i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base, qemu_irq sci_irq, qemu_irq cmos_s3, qemu_irq smi_irq, int kvm_enabled) { PCIDevice *dev; PIIX4PMState *s; dev = pci_create(bus, devfn, "PIIX4_PM"); qdev_prop_set_uint32(&dev->qdev, "smb_io_base", smb_io_base); s = DO_UPCAST(PIIX4PMState, dev, dev); s->irq = sci_irq; acpi_pm1_cnt_init(&s->pm1_cnt, cmos_s3); s->smi_irq = smi_irq; s->kvm_enabled = kvm_enabled; qdev_init_nofail(&dev->qdev); return s->smb.smbus; } static PCIDeviceInfo piix4_pm_info = { .qdev.name = "PIIX4_PM", .qdev.desc = "PM", .qdev.size = sizeof(PIIX4PMState), .qdev.vmsd = &vmstate_acpi, .qdev.no_user = 1, .no_hotplug = 1, .init = piix4_pm_initfn, .config_write = pm_write_config, .vendor_id = PCI_VENDOR_ID_INTEL, .device_id = PCI_DEVICE_ID_INTEL_82371AB_3, .revision = 0x03, .class_id = PCI_CLASS_BRIDGE_OTHER, .qdev.props = (Property[]) { DEFINE_PROP_UINT32("smb_io_base", PIIX4PMState, smb_io_base, 0), DEFINE_PROP_END_OF_LIST(), } }; static void piix4_pm_register(void) { pci_qdev_register(&piix4_pm_info); } device_init(piix4_pm_register); static uint32_t gpe_readb(void *opaque, uint32_t addr) { PIIX4PMState *s = opaque; uint32_t val = acpi_gpe_ioport_readb(&s->gpe, addr); PIIX4_DPRINTF("gpe read %x == %x\n", addr, val); return val; } static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val) { PIIX4PMState *s = opaque; acpi_gpe_ioport_writeb(&s->gpe, addr, val); pm_update_sci(s); PIIX4_DPRINTF("gpe write %x <== %d\n", addr, val); } static uint32_t pcihotplug_read(void *opaque, uint32_t addr) { uint32_t val = 0; struct pci_status *g = opaque; switch (addr) { case PCI_BASE: val = g->up; break; case PCI_BASE + 4: val = g->down; break; default: break; } PIIX4_DPRINTF("pcihotplug read %x == %x\n", addr, val); return val; } static void pcihotplug_write(void *opaque, uint32_t addr, uint32_t val) { struct pci_status *g = opaque; switch (addr) { case PCI_BASE: g->up = val; break; case PCI_BASE + 4: g->down = val; break; } PIIX4_DPRINTF("pcihotplug write %x <== %d\n", addr, val); } static uint32_t pciej_read(void *opaque, uint32_t addr) { PIIX4_DPRINTF("pciej read %x\n", addr); return 0; } static void pciej_write(void *opaque, uint32_t addr, uint32_t val) { BusState *bus = opaque; DeviceState *qdev, *next; PCIDevice *dev; PCIDeviceInfo *info; int slot = ffs(val) - 1; QLIST_FOREACH_SAFE(qdev, &bus->children, sibling, next) { dev = DO_UPCAST(PCIDevice, qdev, qdev); info = container_of(qdev->info, PCIDeviceInfo, qdev); if (PCI_SLOT(dev->devfn) == slot && !info->no_hotplug) { qdev_free(qdev); } } PIIX4_DPRINTF("pciej write %x <== %d\n", addr, val); } static uint32_t pcirmv_read(void *opaque, uint32_t addr) { PIIX4PMState *s = opaque; return s->pci0_hotplug_enable; } static void pcirmv_write(void *opaque, uint32_t addr, uint32_t val) { return; } static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev, PCIHotplugState state); static void piix4_acpi_system_hot_add_init(PCIBus *bus, PIIX4PMState *s) { struct pci_status *pci0_status = &s->pci0_status; register_ioport_write(GPE_BASE, GPE_LEN, 1, gpe_writeb, s); register_ioport_read(GPE_BASE, GPE_LEN, 1, gpe_readb, s); acpi_gpe_blk(&s->gpe, GPE_BASE); register_ioport_write(PCI_BASE, 8, 4, pcihotplug_write, pci0_status); register_ioport_read(PCI_BASE, 8, 4, pcihotplug_read, pci0_status); register_ioport_write(PCI_EJ_BASE, 4, 4, pciej_write, bus); register_ioport_read(PCI_EJ_BASE, 4, 4, pciej_read, bus); register_ioport_write(PCI_RMV_BASE, 4, 4, pcirmv_write, s); register_ioport_read(PCI_RMV_BASE, 4, 4, pcirmv_read, s); pci_bus_hotplug(bus, piix4_device_hotplug, &s->dev.qdev); } static void enable_device(PIIX4PMState *s, int slot) { s->gpe.sts[0] |= PIIX4_PCI_HOTPLUG_STATUS; s->pci0_status.up |= (1 << slot); } static void disable_device(PIIX4PMState *s, int slot) { s->gpe.sts[0] |= PIIX4_PCI_HOTPLUG_STATUS; s->pci0_status.down |= (1 << slot); } static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev, PCIHotplugState state) { int slot = PCI_SLOT(dev->devfn); PIIX4PMState *s = DO_UPCAST(PIIX4PMState, dev, DO_UPCAST(PCIDevice, qdev, qdev)); /* Don't send event when device is enabled during qemu machine creation: * it is present on boot, no hotplug event is necessary. We do send an * event when the device is disabled later. */ if (state == PCI_COLDPLUG_ENABLED) { return 0; } s->pci0_status.up = 0; s->pci0_status.down = 0; if (state == PCI_HOTPLUG_ENABLED) { enable_device(s, slot); } else { disable_device(s, slot); } pm_update_sci(s); return 0; }