root / hw / acpi_piix4.c @ 6141dbfe
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/*
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* ACPI implementation
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>
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*/
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#include "hw.h" |
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#include "pc.h" |
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#include "apm.h" |
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#include "pm_smbus.h" |
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#include "pci.h" |
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#include "acpi.h" |
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#include "sysemu.h" |
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#include "range.h" |
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#include "ioport.h" |
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//#define DEBUG
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#ifdef DEBUG
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# define PIIX4_DPRINTF(format, ...) printf(format, ## __VA_ARGS__) |
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#else
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# define PIIX4_DPRINTF(format, ...) do { } while (0) |
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#endif
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#define ACPI_DBG_IO_ADDR 0xb044 |
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#define GPE_BASE 0xafe0 |
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#define GPE_LEN 4 |
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#define PCI_BASE 0xae00 |
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#define PCI_EJ_BASE 0xae08 |
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#define PCI_RMV_BASE 0xae0c |
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#define PIIX4_PCI_HOTPLUG_STATUS 2 |
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struct pci_status {
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uint32_t up; |
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uint32_t down; |
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}; |
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typedef struct PIIX4PMState { |
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PCIDevice dev; |
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IORange ioport; |
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ACPIPM1EVT pm1a; |
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ACPIPM1CNT pm1_cnt; |
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APMState apm; |
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ACPIPMTimer tmr; |
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PMSMBus smb; |
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uint32_t smb_io_base; |
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qemu_irq irq; |
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qemu_irq smi_irq; |
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int kvm_enabled;
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Notifier machine_ready; |
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/* for pci hotplug */
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ACPIGPE gpe; |
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struct pci_status pci0_status;
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uint32_t pci0_hotplug_enable; |
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} PIIX4PMState; |
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static void piix4_acpi_system_hot_add_init(PCIBus *bus, PIIX4PMState *s); |
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#define ACPI_ENABLE 0xf1 |
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#define ACPI_DISABLE 0xf0 |
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static void pm_update_sci(PIIX4PMState *s) |
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{ |
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int sci_level, pmsts;
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pmsts = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time); |
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sci_level = (((pmsts & s->pm1a.en) & |
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(ACPI_BITMASK_RT_CLOCK_ENABLE | |
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ACPI_BITMASK_POWER_BUTTON_ENABLE | |
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ACPI_BITMASK_GLOBAL_LOCK_ENABLE | |
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ACPI_BITMASK_TIMER_ENABLE)) != 0) ||
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(((s->gpe.sts[0] & s->gpe.en[0]) & PIIX4_PCI_HOTPLUG_STATUS) != 0); |
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qemu_set_irq(s->irq, sci_level); |
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/* schedule a timer interruption if needed */
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acpi_pm_tmr_update(&s->tmr, (s->pm1a.en & ACPI_BITMASK_TIMER_ENABLE) && |
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!(pmsts & ACPI_BITMASK_TIMER_STATUS)); |
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} |
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static void pm_tmr_timer(ACPIPMTimer *tmr) |
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{ |
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PIIX4PMState *s = container_of(tmr, PIIX4PMState, tmr); |
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pm_update_sci(s); |
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} |
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static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width, |
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uint64_t val) |
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{ |
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PIIX4PMState *s = container_of(ioport, PIIX4PMState, ioport); |
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if (width != 2) { |
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PIIX4_DPRINTF("PM write port=0x%04x width=%d val=0x%08x\n",
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(unsigned)addr, width, (unsigned)val); |
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} |
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switch(addr) {
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case 0x00: |
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acpi_pm1_evt_write_sts(&s->pm1a, &s->tmr, val); |
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pm_update_sci(s); |
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break;
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case 0x02: |
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s->pm1a.en = val; |
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pm_update_sci(s); |
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break;
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case 0x04: |
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acpi_pm1_cnt_write(&s->pm1a, &s->pm1_cnt, val); |
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break;
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default:
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break;
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} |
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PIIX4_DPRINTF("PM writew port=0x%04x val=0x%04x\n", (unsigned int)addr, |
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(unsigned int)val); |
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} |
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static void pm_ioport_read(IORange *ioport, uint64_t addr, unsigned width, |
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uint64_t *data) |
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{ |
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PIIX4PMState *s = container_of(ioport, PIIX4PMState, ioport); |
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uint32_t val; |
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switch(addr) {
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case 0x00: |
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val = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time); |
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break;
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case 0x02: |
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val = s->pm1a.en; |
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break;
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case 0x04: |
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val = s->pm1_cnt.cnt; |
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break;
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case 0x08: |
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val = acpi_pm_tmr_get(&s->tmr); |
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break;
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default:
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val = 0;
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break;
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} |
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PIIX4_DPRINTF("PM readw port=0x%04x val=0x%04x\n", (unsigned int)addr, val); |
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*data = val; |
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} |
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static const IORangeOps pm_iorange_ops = { |
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.read = pm_ioport_read, |
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.write = pm_ioport_write, |
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}; |
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static void apm_ctrl_changed(uint32_t val, void *arg) |
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{ |
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PIIX4PMState *s = arg; |
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/* ACPI specs 3.0, 4.7.2.5 */
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acpi_pm1_cnt_update(&s->pm1_cnt, val == ACPI_ENABLE, val == ACPI_DISABLE); |
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if (s->dev.config[0x5b] & (1 << 1)) { |
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if (s->smi_irq) {
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qemu_irq_raise(s->smi_irq); |
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} |
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} |
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} |
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static void acpi_dbg_writel(void *opaque, uint32_t addr, uint32_t val) |
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{ |
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PIIX4_DPRINTF("ACPI: DBG: 0x%08x\n", val);
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} |
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static void pm_io_space_update(PIIX4PMState *s) |
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{ |
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uint32_t pm_io_base; |
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if (s->dev.config[0x80] & 1) { |
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pm_io_base = le32_to_cpu(*(uint32_t *)(s->dev.config + 0x40));
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pm_io_base &= 0xffc0;
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/* XXX: need to improve memory and ioport allocation */
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PIIX4_DPRINTF("PM: mapping to 0x%x\n", pm_io_base);
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iorange_init(&s->ioport, &pm_iorange_ops, pm_io_base, 64);
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ioport_register(&s->ioport); |
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} |
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} |
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static void pm_write_config(PCIDevice *d, |
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uint32_t address, uint32_t val, int len)
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{ |
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pci_default_write_config(d, address, val, len); |
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if (range_covers_byte(address, len, 0x80)) |
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pm_io_space_update((PIIX4PMState *)d); |
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} |
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static int vmstate_acpi_post_load(void *opaque, int version_id) |
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{ |
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PIIX4PMState *s = opaque; |
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pm_io_space_update(s); |
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return 0; |
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} |
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#define VMSTATE_GPE_ARRAY(_field, _state) \
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{ \ |
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.name = (stringify(_field)), \ |
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.version_id = 0, \
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.num = GPE_LEN, \ |
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.info = &vmstate_info_uint16, \ |
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.size = sizeof(uint16_t), \
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.flags = VMS_ARRAY | VMS_POINTER, \ |
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.offset = vmstate_offset_pointer(_state, _field, uint8_t), \ |
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} |
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static const VMStateDescription vmstate_gpe = { |
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.name = "gpe",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) { |
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VMSTATE_GPE_ARRAY(sts, ACPIGPE), |
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VMSTATE_GPE_ARRAY(en, ACPIGPE), |
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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static const VMStateDescription vmstate_pci_status = { |
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.name = "pci_status",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.fields = (VMStateField []) { |
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VMSTATE_UINT32(up, struct pci_status),
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VMSTATE_UINT32(down, struct pci_status),
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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static const VMStateDescription vmstate_acpi = { |
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.name = "piix4_pm",
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.version_id = 2,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.post_load = vmstate_acpi_post_load, |
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.fields = (VMStateField []) { |
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VMSTATE_PCI_DEVICE(dev, PIIX4PMState), |
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VMSTATE_UINT16(pm1a.sts, PIIX4PMState), |
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VMSTATE_UINT16(pm1a.en, PIIX4PMState), |
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VMSTATE_UINT16(pm1_cnt.cnt, PIIX4PMState), |
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VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState),
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VMSTATE_TIMER(tmr.timer, PIIX4PMState), |
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VMSTATE_INT64(tmr.overflow_time, PIIX4PMState), |
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VMSTATE_STRUCT(gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE),
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VMSTATE_STRUCT(pci0_status, PIIX4PMState, 2, vmstate_pci_status,
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struct pci_status),
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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static void piix4_update_hotplug(PIIX4PMState *s) |
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{ |
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PCIDevice *dev = &s->dev; |
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BusState *bus = qdev_get_parent_bus(&dev->qdev); |
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DeviceState *qdev, *next; |
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s->pci0_hotplug_enable = ~0;
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QLIST_FOREACH_SAFE(qdev, &bus->children, sibling, next) { |
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PCIDeviceInfo *info = container_of(qdev->info, PCIDeviceInfo, qdev); |
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PCIDevice *pdev = DO_UPCAST(PCIDevice, qdev, qdev); |
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int slot = PCI_SLOT(pdev->devfn);
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if (info->no_hotplug) {
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s->pci0_hotplug_enable &= ~(1 << slot);
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} |
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} |
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} |
289 |
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static void piix4_reset(void *opaque) |
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{ |
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PIIX4PMState *s = opaque; |
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uint8_t *pci_conf = s->dev.config; |
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pci_conf[0x58] = 0; |
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pci_conf[0x59] = 0; |
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pci_conf[0x5a] = 0; |
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pci_conf[0x5b] = 0; |
299 |
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if (s->kvm_enabled) {
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/* Mark SMM as already inited (until KVM supports SMM). */
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pci_conf[0x5B] = 0x02; |
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} |
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piix4_update_hotplug(s); |
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} |
306 |
|
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static void piix4_powerdown(void *opaque, int irq, int power_failing) |
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{ |
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PIIX4PMState *s = opaque; |
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ACPIPM1EVT *pm1a = s? &s->pm1a: NULL;
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ACPIPMTimer *tmr = s? &s->tmr: NULL;
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acpi_pm1_evt_power_down(pm1a, tmr); |
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} |
315 |
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static void piix4_pm_machine_ready(struct Notifier* n) |
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{ |
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PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready); |
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uint8_t *pci_conf; |
320 |
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pci_conf = s->dev.config; |
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pci_conf[0x5f] = (isa_is_ioport_assigned(0x378) ? 0x80 : 0) | 0x10; |
323 |
pci_conf[0x63] = 0x60; |
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pci_conf[0x67] = (isa_is_ioport_assigned(0x3f8) ? 0x08 : 0) | |
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(isa_is_ioport_assigned(0x2f8) ? 0x90 : 0); |
326 |
|
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} |
328 |
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static int piix4_pm_initfn(PCIDevice *dev) |
330 |
{ |
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PIIX4PMState *s = DO_UPCAST(PIIX4PMState, dev, dev); |
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uint8_t *pci_conf; |
333 |
|
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pci_conf = s->dev.config; |
335 |
pci_conf[0x06] = 0x80; |
336 |
pci_conf[0x07] = 0x02; |
337 |
pci_conf[0x09] = 0x00; |
338 |
pci_conf[0x3d] = 0x01; // interrupt pin 1 |
339 |
|
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pci_conf[0x40] = 0x01; /* PM io base read only bit */ |
341 |
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/* APM */
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apm_init(&s->apm, apm_ctrl_changed, s); |
344 |
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register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s); |
346 |
|
347 |
if (s->kvm_enabled) {
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348 |
/* Mark SMM as already inited to prevent SMM from running. KVM does not
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349 |
* support SMM mode. */
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350 |
pci_conf[0x5B] = 0x02; |
351 |
} |
352 |
|
353 |
/* XXX: which specification is used ? The i82731AB has different
|
354 |
mappings */
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pci_conf[0x90] = s->smb_io_base | 1; |
356 |
pci_conf[0x91] = s->smb_io_base >> 8; |
357 |
pci_conf[0xd2] = 0x09; |
358 |
register_ioport_write(s->smb_io_base, 64, 1, smb_ioport_writeb, &s->smb); |
359 |
register_ioport_read(s->smb_io_base, 64, 1, smb_ioport_readb, &s->smb); |
360 |
|
361 |
acpi_pm_tmr_init(&s->tmr, pm_tmr_timer); |
362 |
acpi_gpe_init(&s->gpe, GPE_LEN); |
363 |
|
364 |
qemu_system_powerdown = *qemu_allocate_irqs(piix4_powerdown, s, 1);
|
365 |
|
366 |
pm_smbus_init(&s->dev.qdev, &s->smb); |
367 |
s->machine_ready.notify = piix4_pm_machine_ready; |
368 |
qemu_add_machine_init_done_notifier(&s->machine_ready); |
369 |
qemu_register_reset(piix4_reset, s); |
370 |
piix4_acpi_system_hot_add_init(dev->bus, s); |
371 |
|
372 |
return 0; |
373 |
} |
374 |
|
375 |
i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
|
376 |
qemu_irq sci_irq, qemu_irq cmos_s3, qemu_irq smi_irq, |
377 |
int kvm_enabled)
|
378 |
{ |
379 |
PCIDevice *dev; |
380 |
PIIX4PMState *s; |
381 |
|
382 |
dev = pci_create(bus, devfn, "PIIX4_PM");
|
383 |
qdev_prop_set_uint32(&dev->qdev, "smb_io_base", smb_io_base);
|
384 |
|
385 |
s = DO_UPCAST(PIIX4PMState, dev, dev); |
386 |
s->irq = sci_irq; |
387 |
acpi_pm1_cnt_init(&s->pm1_cnt, cmos_s3); |
388 |
s->smi_irq = smi_irq; |
389 |
s->kvm_enabled = kvm_enabled; |
390 |
|
391 |
qdev_init_nofail(&dev->qdev); |
392 |
|
393 |
return s->smb.smbus;
|
394 |
} |
395 |
|
396 |
static PCIDeviceInfo piix4_pm_info = {
|
397 |
.qdev.name = "PIIX4_PM",
|
398 |
.qdev.desc = "PM",
|
399 |
.qdev.size = sizeof(PIIX4PMState),
|
400 |
.qdev.vmsd = &vmstate_acpi, |
401 |
.qdev.no_user = 1,
|
402 |
.no_hotplug = 1,
|
403 |
.init = piix4_pm_initfn, |
404 |
.config_write = pm_write_config, |
405 |
.vendor_id = PCI_VENDOR_ID_INTEL, |
406 |
.device_id = PCI_DEVICE_ID_INTEL_82371AB_3, |
407 |
.revision = 0x03,
|
408 |
.class_id = PCI_CLASS_BRIDGE_OTHER, |
409 |
.qdev.props = (Property[]) { |
410 |
DEFINE_PROP_UINT32("smb_io_base", PIIX4PMState, smb_io_base, 0), |
411 |
DEFINE_PROP_END_OF_LIST(), |
412 |
} |
413 |
}; |
414 |
|
415 |
static void piix4_pm_register(void) |
416 |
{ |
417 |
pci_qdev_register(&piix4_pm_info); |
418 |
} |
419 |
|
420 |
device_init(piix4_pm_register); |
421 |
|
422 |
static uint32_t gpe_readb(void *opaque, uint32_t addr) |
423 |
{ |
424 |
PIIX4PMState *s = opaque; |
425 |
uint32_t val = acpi_gpe_ioport_readb(&s->gpe, addr); |
426 |
|
427 |
PIIX4_DPRINTF("gpe read %x == %x\n", addr, val);
|
428 |
return val;
|
429 |
} |
430 |
|
431 |
static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val) |
432 |
{ |
433 |
PIIX4PMState *s = opaque; |
434 |
|
435 |
acpi_gpe_ioport_writeb(&s->gpe, addr, val); |
436 |
pm_update_sci(s); |
437 |
|
438 |
PIIX4_DPRINTF("gpe write %x <== %d\n", addr, val);
|
439 |
} |
440 |
|
441 |
static uint32_t pcihotplug_read(void *opaque, uint32_t addr) |
442 |
{ |
443 |
uint32_t val = 0;
|
444 |
struct pci_status *g = opaque;
|
445 |
switch (addr) {
|
446 |
case PCI_BASE:
|
447 |
val = g->up; |
448 |
break;
|
449 |
case PCI_BASE + 4: |
450 |
val = g->down; |
451 |
break;
|
452 |
default:
|
453 |
break;
|
454 |
} |
455 |
|
456 |
PIIX4_DPRINTF("pcihotplug read %x == %x\n", addr, val);
|
457 |
return val;
|
458 |
} |
459 |
|
460 |
static void pcihotplug_write(void *opaque, uint32_t addr, uint32_t val) |
461 |
{ |
462 |
struct pci_status *g = opaque;
|
463 |
switch (addr) {
|
464 |
case PCI_BASE:
|
465 |
g->up = val; |
466 |
break;
|
467 |
case PCI_BASE + 4: |
468 |
g->down = val; |
469 |
break;
|
470 |
} |
471 |
|
472 |
PIIX4_DPRINTF("pcihotplug write %x <== %d\n", addr, val);
|
473 |
} |
474 |
|
475 |
static uint32_t pciej_read(void *opaque, uint32_t addr) |
476 |
{ |
477 |
PIIX4_DPRINTF("pciej read %x\n", addr);
|
478 |
return 0; |
479 |
} |
480 |
|
481 |
static void pciej_write(void *opaque, uint32_t addr, uint32_t val) |
482 |
{ |
483 |
BusState *bus = opaque; |
484 |
DeviceState *qdev, *next; |
485 |
PCIDevice *dev; |
486 |
PCIDeviceInfo *info; |
487 |
int slot = ffs(val) - 1; |
488 |
|
489 |
QLIST_FOREACH_SAFE(qdev, &bus->children, sibling, next) { |
490 |
dev = DO_UPCAST(PCIDevice, qdev, qdev); |
491 |
info = container_of(qdev->info, PCIDeviceInfo, qdev); |
492 |
if (PCI_SLOT(dev->devfn) == slot && !info->no_hotplug) {
|
493 |
qdev_free(qdev); |
494 |
} |
495 |
} |
496 |
|
497 |
|
498 |
PIIX4_DPRINTF("pciej write %x <== %d\n", addr, val);
|
499 |
} |
500 |
|
501 |
static uint32_t pcirmv_read(void *opaque, uint32_t addr) |
502 |
{ |
503 |
PIIX4PMState *s = opaque; |
504 |
|
505 |
return s->pci0_hotplug_enable;
|
506 |
} |
507 |
|
508 |
static void pcirmv_write(void *opaque, uint32_t addr, uint32_t val) |
509 |
{ |
510 |
return;
|
511 |
} |
512 |
|
513 |
static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev, |
514 |
PCIHotplugState state); |
515 |
|
516 |
static void piix4_acpi_system_hot_add_init(PCIBus *bus, PIIX4PMState *s) |
517 |
{ |
518 |
struct pci_status *pci0_status = &s->pci0_status;
|
519 |
|
520 |
register_ioport_write(GPE_BASE, GPE_LEN, 1, gpe_writeb, s);
|
521 |
register_ioport_read(GPE_BASE, GPE_LEN, 1, gpe_readb, s);
|
522 |
acpi_gpe_blk(&s->gpe, GPE_BASE); |
523 |
|
524 |
register_ioport_write(PCI_BASE, 8, 4, pcihotplug_write, pci0_status); |
525 |
register_ioport_read(PCI_BASE, 8, 4, pcihotplug_read, pci0_status); |
526 |
|
527 |
register_ioport_write(PCI_EJ_BASE, 4, 4, pciej_write, bus); |
528 |
register_ioport_read(PCI_EJ_BASE, 4, 4, pciej_read, bus); |
529 |
|
530 |
register_ioport_write(PCI_RMV_BASE, 4, 4, pcirmv_write, s); |
531 |
register_ioport_read(PCI_RMV_BASE, 4, 4, pcirmv_read, s); |
532 |
|
533 |
pci_bus_hotplug(bus, piix4_device_hotplug, &s->dev.qdev); |
534 |
} |
535 |
|
536 |
static void enable_device(PIIX4PMState *s, int slot) |
537 |
{ |
538 |
s->gpe.sts[0] |= PIIX4_PCI_HOTPLUG_STATUS;
|
539 |
s->pci0_status.up |= (1 << slot);
|
540 |
} |
541 |
|
542 |
static void disable_device(PIIX4PMState *s, int slot) |
543 |
{ |
544 |
s->gpe.sts[0] |= PIIX4_PCI_HOTPLUG_STATUS;
|
545 |
s->pci0_status.down |= (1 << slot);
|
546 |
} |
547 |
|
548 |
static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev, |
549 |
PCIHotplugState state) |
550 |
{ |
551 |
int slot = PCI_SLOT(dev->devfn);
|
552 |
PIIX4PMState *s = DO_UPCAST(PIIX4PMState, dev, |
553 |
DO_UPCAST(PCIDevice, qdev, qdev)); |
554 |
|
555 |
/* Don't send event when device is enabled during qemu machine creation:
|
556 |
* it is present on boot, no hotplug event is necessary. We do send an
|
557 |
* event when the device is disabled later. */
|
558 |
if (state == PCI_COLDPLUG_ENABLED) {
|
559 |
return 0; |
560 |
} |
561 |
|
562 |
s->pci0_status.up = 0;
|
563 |
s->pci0_status.down = 0;
|
564 |
if (state == PCI_HOTPLUG_ENABLED) {
|
565 |
enable_device(s, slot); |
566 |
} else {
|
567 |
disable_device(s, slot); |
568 |
} |
569 |
|
570 |
pm_update_sci(s); |
571 |
|
572 |
return 0; |
573 |
} |