4 * Copyright (c) 2006 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License version 2 as published by the Free Software Foundation.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, see <http://www.gnu.org/licenses/>
21 #include "qemu-timer.h"
29 /* i82731AB (PIIX4) compatible power management function */
30 #define PM_FREQ 3579545
32 #define ACPI_DBG_IO_ADDR 0xb044
34 typedef struct PIIX4PMState {
42 int64_t tmr_overflow_time;
55 #define RSM_STS (1 << 15)
56 #define PWRBTN_STS (1 << 8)
57 #define RTC_EN (1 << 10)
58 #define PWRBTN_EN (1 << 8)
59 #define GBL_EN (1 << 5)
60 #define TMROF_EN (1 << 0)
62 #define SCI_EN (1 << 0)
64 #define SUS_EN (1 << 13)
66 #define ACPI_ENABLE 0xf1
67 #define ACPI_DISABLE 0xf0
69 #define SMBHSTSTS 0x00
70 #define SMBHSTCNT 0x02
71 #define SMBHSTCMD 0x03
72 #define SMBHSTADD 0x04
73 #define SMBHSTDAT0 0x05
74 #define SMBHSTDAT1 0x06
75 #define SMBBLKDAT 0x07
77 static PIIX4PMState *pm_state;
79 static uint32_t get_pmtmr(PIIX4PMState *s)
82 d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, get_ticks_per_sec());
86 static int get_pmsts(PIIX4PMState *s)
91 d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, get_ticks_per_sec());
92 if (d >= s->tmr_overflow_time)
97 static void pm_update_sci(PIIX4PMState *s)
102 pmsts = get_pmsts(s);
103 sci_level = (((pmsts & s->pmen) &
104 (RTC_EN | PWRBTN_EN | GBL_EN | TMROF_EN)) != 0);
105 qemu_set_irq(s->irq, sci_level);
106 /* schedule a timer interruption if needed */
107 if ((s->pmen & TMROF_EN) && !(pmsts & TMROF_EN)) {
108 expire_time = muldiv64(s->tmr_overflow_time, get_ticks_per_sec(), PM_FREQ);
109 qemu_mod_timer(s->tmr_timer, expire_time);
111 qemu_del_timer(s->tmr_timer);
115 static void pm_tmr_timer(void *opaque)
117 PIIX4PMState *s = opaque;
121 static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
123 PIIX4PMState *s = opaque;
130 pmsts = get_pmsts(s);
131 if (pmsts & val & TMROF_EN) {
132 /* if TMRSTS is reset, then compute the new overflow time */
133 d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ,
134 get_ticks_per_sec());
135 s->tmr_overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
148 s->pmcntrl = val & ~(SUS_EN);
150 /* change suspend type */
151 sus_typ = (val >> 10) & 7;
153 case 0: /* soft power off */
154 qemu_system_shutdown_request();
157 /* RSM_STS should be set on resume. Pretend that resume
158 was caused by power button */
159 s->pmsts |= (RSM_STS | PWRBTN_STS);
160 qemu_system_reset_request();
161 #if defined(TARGET_I386)
162 cmos_set_s3_resume();
174 printf("PM writew port=0x%04x val=0x%04x\n", addr, val);
178 static uint32_t pm_ioport_readw(void *opaque, uint32_t addr)
180 PIIX4PMState *s = opaque;
199 printf("PM readw port=0x%04x val=0x%04x\n", addr, val);
204 static void pm_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
206 // PIIX4PMState *s = opaque;
209 printf("PM writel port=0x%04x val=0x%08x\n", addr, val);
213 static uint32_t pm_ioport_readl(void *opaque, uint32_t addr)
215 PIIX4PMState *s = opaque;
228 printf("PM readl port=0x%04x val=0x%08x\n", addr, val);
233 static void pm_smi_writeb(void *opaque, uint32_t addr, uint32_t val)
235 PIIX4PMState *s = opaque;
238 printf("pm_smi_writeb addr=0x%x val=0x%02x\n", addr, val);
243 /* ACPI specs 3.0, 4.7.2.5 */
244 if (val == ACPI_ENABLE) {
245 s->pmcntrl |= SCI_EN;
246 } else if (val == ACPI_DISABLE) {
247 s->pmcntrl &= ~SCI_EN;
250 if (s->dev.config[0x5b] & (1 << 1)) {
251 cpu_interrupt(first_cpu, CPU_INTERRUPT_SMI);
258 static uint32_t pm_smi_readb(void *opaque, uint32_t addr)
260 PIIX4PMState *s = opaque;
270 printf("pm_smi_readb addr=0x%x val=0x%02x\n", addr, val);
275 static void acpi_dbg_writel(void *opaque, uint32_t addr, uint32_t val)
278 printf("ACPI: DBG: 0x%08x\n", val);
282 static void smb_transaction(PIIX4PMState *s)
284 uint8_t prot = (s->smb_ctl >> 2) & 0x07;
285 uint8_t read = s->smb_addr & 0x01;
286 uint8_t cmd = s->smb_cmd;
287 uint8_t addr = s->smb_addr >> 1;
288 i2c_bus *bus = s->smbus;
291 printf("SMBus trans addr=0x%02x prot=0x%02x\n", addr, prot);
295 smbus_quick_command(bus, addr, read);
299 s->smb_data0 = smbus_receive_byte(bus, addr);
301 smbus_send_byte(bus, addr, cmd);
306 s->smb_data0 = smbus_read_byte(bus, addr, cmd);
308 smbus_write_byte(bus, addr, cmd, s->smb_data0);
314 val = smbus_read_word(bus, addr, cmd);
316 s->smb_data1 = val >> 8;
318 smbus_write_word(bus, addr, cmd, (s->smb_data1 << 8) | s->smb_data0);
323 s->smb_data0 = smbus_read_block(bus, addr, cmd, s->smb_data);
325 smbus_write_block(bus, addr, cmd, s->smb_data, s->smb_data0);
337 static void smb_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
339 PIIX4PMState *s = opaque;
342 printf("SMB writeb port=0x%04x val=0x%02x\n", addr, val);
367 s->smb_data[s->smb_index++] = val;
368 if (s->smb_index > 31)
376 static uint32_t smb_ioport_readb(void *opaque, uint32_t addr)
378 PIIX4PMState *s = opaque;
388 val = s->smb_ctl & 0x1f;
403 val = s->smb_data[s->smb_index++];
404 if (s->smb_index > 31)
412 printf("SMB readb port=0x%04x val=0x%02x\n", addr, val);
417 static void pm_io_space_update(PIIX4PMState *s)
421 if (s->dev.config[0x80] & 1) {
422 pm_io_base = le32_to_cpu(*(uint32_t *)(s->dev.config + 0x40));
423 pm_io_base &= 0xffc0;
425 /* XXX: need to improve memory and ioport allocation */
427 printf("PM: mapping to 0x%x\n", pm_io_base);
429 register_ioport_write(pm_io_base, 64, 2, pm_ioport_writew, s);
430 register_ioport_read(pm_io_base, 64, 2, pm_ioport_readw, s);
431 register_ioport_write(pm_io_base, 64, 4, pm_ioport_writel, s);
432 register_ioport_read(pm_io_base, 64, 4, pm_ioport_readl, s);
436 static void pm_write_config(PCIDevice *d,
437 uint32_t address, uint32_t val, int len)
439 pci_default_write_config(d, address, val, len);
440 if (range_covers_byte(address, len, 0x80))
441 pm_io_space_update((PIIX4PMState *)d);
444 static int vmstate_acpi_post_load(void *opaque, int version_id)
446 PIIX4PMState *s = opaque;
448 pm_io_space_update(s);
452 static const VMStateDescription vmstate_acpi = {
455 .minimum_version_id = 1,
456 .minimum_version_id_old = 1,
457 .post_load = vmstate_acpi_post_load,
458 .fields = (VMStateField []) {
459 VMSTATE_PCI_DEVICE(dev, PIIX4PMState),
460 VMSTATE_UINT16(pmsts, PIIX4PMState),
461 VMSTATE_UINT16(pmen, PIIX4PMState),
462 VMSTATE_UINT16(pmcntrl, PIIX4PMState),
463 VMSTATE_UINT8(apmc, PIIX4PMState),
464 VMSTATE_UINT8(apms, PIIX4PMState),
465 VMSTATE_TIMER(tmr_timer, PIIX4PMState),
466 VMSTATE_INT64(tmr_overflow_time, PIIX4PMState),
467 VMSTATE_END_OF_LIST()
471 static void piix4_reset(void *opaque)
473 PIIX4PMState *s = opaque;
474 uint8_t *pci_conf = s->dev.config;
482 /* Mark SMM as already inited (until KVM supports SMM). */
483 pci_conf[0x5B] = 0x02;
487 static void piix4_powerdown(void *opaque, int irq, int power_failing)
489 #if defined(TARGET_I386)
490 PIIX4PMState *s = opaque;
493 qemu_system_shutdown_request();
494 } else if (s->pmen & PWRBTN_EN) {
495 s->pmsts |= PWRBTN_EN;
501 i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
507 s = (PIIX4PMState *)pci_register_device(bus,
508 "PM", sizeof(PIIX4PMState),
509 devfn, NULL, pm_write_config);
511 pci_conf = s->dev.config;
512 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
513 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371AB_3);
514 pci_conf[0x06] = 0x80;
515 pci_conf[0x07] = 0x02;
516 pci_conf[0x08] = 0x03; // revision number
517 pci_conf[0x09] = 0x00;
518 pci_config_set_class(pci_conf, PCI_CLASS_BRIDGE_OTHER);
519 pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
520 pci_conf[0x3d] = 0x01; // interrupt pin 1
522 pci_conf[0x40] = 0x01; /* PM io base read only bit */
524 register_ioport_write(0xb2, 2, 1, pm_smi_writeb, s);
525 register_ioport_read(0xb2, 2, 1, pm_smi_readb, s);
527 register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s);
530 /* Mark SMM as already inited to prevent SMM from running. KVM does not
531 * support SMM mode. */
532 pci_conf[0x5B] = 0x02;
535 /* XXX: which specification is used ? The i82731AB has different
537 pci_conf[0x5f] = (parallel_hds[0] != NULL ? 0x80 : 0) | 0x10;
538 pci_conf[0x63] = 0x60;
539 pci_conf[0x67] = (serial_hds[0] != NULL ? 0x08 : 0) |
540 (serial_hds[1] != NULL ? 0x90 : 0);
542 pci_conf[0x90] = smb_io_base | 1;
543 pci_conf[0x91] = smb_io_base >> 8;
544 pci_conf[0xd2] = 0x09;
545 register_ioport_write(smb_io_base, 64, 1, smb_ioport_writeb, s);
546 register_ioport_read(smb_io_base, 64, 1, smb_ioport_readb, s);
548 s->tmr_timer = qemu_new_timer(vm_clock, pm_tmr_timer, s);
550 qemu_system_powerdown = *qemu_allocate_irqs(piix4_powerdown, s, 1);
552 vmstate_register(0, &vmstate_acpi, s);
554 s->smbus = i2c_init_bus(NULL, "i2c");
556 qemu_register_reset(piix4_reset, s);
561 #define GPE_BASE 0xafe0
562 #define PCI_BASE 0xae00
563 #define PCI_EJ_BASE 0xae08
566 uint16_t sts; /* status */
567 uint16_t en; /* enabled */
575 static struct gpe_regs gpe;
576 static struct pci_status pci0_status;
578 static uint32_t gpe_read_val(uint16_t val, uint32_t addr)
581 return (val >> 8) & 0xff;
585 static uint32_t gpe_readb(void *opaque, uint32_t addr)
588 struct gpe_regs *g = opaque;
592 val = gpe_read_val(g->sts, addr);
596 val = gpe_read_val(g->en, addr);
603 printf("gpe read %x == %x\n", addr, val);
608 static void gpe_write_val(uint16_t *cur, int addr, uint32_t val)
611 *cur = (*cur & 0xff) | (val << 8);
613 *cur = (*cur & 0xff00) | (val & 0xff);
616 static void gpe_reset_val(uint16_t *cur, int addr, uint32_t val)
618 uint16_t x1, x0 = val & 0xff;
619 int shift = (addr & 1) ? 8 : 0;
621 x1 = (*cur >> shift) & 0xff;
625 *cur = (*cur & (0xff << (8 - shift))) | (x1 << shift);
628 static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
630 struct gpe_regs *g = opaque;
634 gpe_reset_val(&g->sts, addr, val);
638 gpe_write_val(&g->en, addr, val);
645 printf("gpe write %x <== %d\n", addr, val);
649 static uint32_t pcihotplug_read(void *opaque, uint32_t addr)
652 struct pci_status *g = opaque;
665 printf("pcihotplug read %x == %x\n", addr, val);
670 static void pcihotplug_write(void *opaque, uint32_t addr, uint32_t val)
672 struct pci_status *g = opaque;
683 printf("pcihotplug write %x <== %d\n", addr, val);
687 static uint32_t pciej_read(void *opaque, uint32_t addr)
690 printf("pciej read %x\n", addr);
695 static void pciej_write(void *opaque, uint32_t addr, uint32_t val)
697 BusState *bus = opaque;
698 DeviceState *qdev, *next;
700 int slot = ffs(val) - 1;
702 QLIST_FOREACH_SAFE(qdev, &bus->children, sibling, next) {
703 dev = DO_UPCAST(PCIDevice, qdev, qdev);
704 if (PCI_SLOT(dev->devfn) == slot) {
711 printf("pciej write %x <== %d\n", addr, val);
715 static int piix4_device_hotplug(PCIDevice *dev, int state);
717 void piix4_acpi_system_hot_add_init(PCIBus *bus)
719 register_ioport_write(GPE_BASE, 4, 1, gpe_writeb, &gpe);
720 register_ioport_read(GPE_BASE, 4, 1, gpe_readb, &gpe);
722 register_ioport_write(PCI_BASE, 8, 4, pcihotplug_write, &pci0_status);
723 register_ioport_read(PCI_BASE, 8, 4, pcihotplug_read, &pci0_status);
725 register_ioport_write(PCI_EJ_BASE, 4, 4, pciej_write, bus);
726 register_ioport_read(PCI_EJ_BASE, 4, 4, pciej_read, bus);
728 pci_bus_hotplug(bus, piix4_device_hotplug);
731 static void enable_device(struct pci_status *p, struct gpe_regs *g, int slot)
734 p->up |= (1 << slot);
737 static void disable_device(struct pci_status *p, struct gpe_regs *g, int slot)
740 p->down |= (1 << slot);
743 static int piix4_device_hotplug(PCIDevice *dev, int state)
745 int slot = PCI_SLOT(dev->devfn);
748 pci0_status.down = 0;
750 enable_device(&pci0_status, &gpe, slot);
752 disable_device(&pci0_status, &gpe, slot);
754 qemu_set_irq(pm_state->irq, 1);
755 qemu_set_irq(pm_state->irq, 0);
760 struct acpi_table_header
762 char signature [4]; /* ACPI signature (4 ASCII characters) */
763 uint32_t length; /* Length of table, in bytes, including header */
764 uint8_t revision; /* ACPI Specification minor version # */
765 uint8_t checksum; /* To make sum of entire table == 0 */
766 char oem_id [6]; /* OEM identification */
767 char oem_table_id [8]; /* OEM table identification */
768 uint32_t oem_revision; /* OEM revision number */
769 char asl_compiler_id [4]; /* ASL compiler vendor ID */
770 uint32_t asl_compiler_revision; /* ASL compiler revision number */
771 } __attribute__((packed));
774 size_t acpi_tables_len;
776 static int acpi_checksum(const uint8_t *data, int len)
780 for(i = 0; i < len; i++)
782 return (-sum) & 0xff;
785 int acpi_table_add(const char *t)
787 static const char *dfl_id = "QEMUQEMU";
788 char buf[1024], *p, *f;
789 struct acpi_table_header acpi_hdr;
793 memset(&acpi_hdr, 0, sizeof(acpi_hdr));
795 if (get_param_value(buf, sizeof(buf), "sig", t)) {
796 strncpy(acpi_hdr.signature, buf, 4);
798 strncpy(acpi_hdr.signature, dfl_id, 4);
800 if (get_param_value(buf, sizeof(buf), "rev", t)) {
801 val = strtoul(buf, &p, 10);
802 if (val > 255 || *p != '\0')
807 acpi_hdr.revision = (int8_t)val;
809 if (get_param_value(buf, sizeof(buf), "oem_id", t)) {
810 strncpy(acpi_hdr.oem_id, buf, 6);
812 strncpy(acpi_hdr.oem_id, dfl_id, 6);
815 if (get_param_value(buf, sizeof(buf), "oem_table_id", t)) {
816 strncpy(acpi_hdr.oem_table_id, buf, 8);
818 strncpy(acpi_hdr.oem_table_id, dfl_id, 8);
821 if (get_param_value(buf, sizeof(buf), "oem_rev", t)) {
822 val = strtol(buf, &p, 10);
828 acpi_hdr.oem_revision = cpu_to_le32(val);
830 if (get_param_value(buf, sizeof(buf), "asl_compiler_id", t)) {
831 strncpy(acpi_hdr.asl_compiler_id, buf, 4);
833 strncpy(acpi_hdr.asl_compiler_id, dfl_id, 4);
836 if (get_param_value(buf, sizeof(buf), "asl_compiler_rev", t)) {
837 val = strtol(buf, &p, 10);
843 acpi_hdr.asl_compiler_revision = cpu_to_le32(val);
845 if (!get_param_value(buf, sizeof(buf), "data", t)) {
849 acpi_hdr.length = sizeof(acpi_hdr);
854 char *n = strchr(f, ':');
857 if(stat(f, &s) < 0) {
858 fprintf(stderr, "Can't stat file '%s': %s\n", f, strerror(errno));
861 acpi_hdr.length += s.st_size;
869 acpi_tables_len = sizeof(uint16_t);
870 acpi_tables = qemu_mallocz(acpi_tables_len);
872 p = acpi_tables + acpi_tables_len;
873 acpi_tables_len += sizeof(uint16_t) + acpi_hdr.length;
874 acpi_tables = qemu_realloc(acpi_tables, acpi_tables_len);
876 acpi_hdr.length = cpu_to_le32(acpi_hdr.length);
877 *(uint16_t*)p = acpi_hdr.length;
878 p += sizeof(uint16_t);
879 memcpy(p, &acpi_hdr, sizeof(acpi_hdr));
880 off = sizeof(acpi_hdr);
886 char *n = strchr(f, ':');
889 fd = open(f, O_RDONLY);
893 if(fstat(fd, &s) < 0) {
900 r = read(fd, p + off, s.st_size);
904 } else if ((r < 0 && errno != EINTR) || r == 0) {
916 ((struct acpi_table_header*)p)->checksum = acpi_checksum((uint8_t*)p, off);
917 /* increase number of tables */
918 (*(uint16_t*)acpi_tables) =
919 cpu_to_le32(le32_to_cpu(*(uint16_t*)acpi_tables) + 1);
923 qemu_free(acpi_tables);