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, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
22 #include "qemu-timer.h"
30 /* i82731AB (PIIX4) compatible power management function */
31 #define PM_FREQ 3579545
33 #define ACPI_DBG_IO_ADDR 0xb044
35 typedef struct PIIX4PMState {
43 int64_t tmr_overflow_time;
56 #define RSM_STS (1 << 15)
57 #define PWRBTN_STS (1 << 8)
58 #define RTC_EN (1 << 10)
59 #define PWRBTN_EN (1 << 8)
60 #define GBL_EN (1 << 5)
61 #define TMROF_EN (1 << 0)
63 #define SCI_EN (1 << 0)
65 #define SUS_EN (1 << 13)
67 #define ACPI_ENABLE 0xf1
68 #define ACPI_DISABLE 0xf0
70 #define SMBHSTSTS 0x00
71 #define SMBHSTCNT 0x02
72 #define SMBHSTCMD 0x03
73 #define SMBHSTADD 0x04
74 #define SMBHSTDAT0 0x05
75 #define SMBHSTDAT1 0x06
76 #define SMBBLKDAT 0x07
78 static PIIX4PMState *pm_state;
80 static uint32_t get_pmtmr(PIIX4PMState *s)
83 d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, ticks_per_sec);
87 static int get_pmsts(PIIX4PMState *s)
92 d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, ticks_per_sec);
93 if (d >= s->tmr_overflow_time)
98 static void pm_update_sci(PIIX4PMState *s)
100 int sci_level, pmsts;
103 pmsts = get_pmsts(s);
104 sci_level = (((pmsts & s->pmen) &
105 (RTC_EN | PWRBTN_EN | GBL_EN | TMROF_EN)) != 0);
106 qemu_set_irq(s->irq, sci_level);
107 /* schedule a timer interruption if needed */
108 if ((s->pmen & TMROF_EN) && !(pmsts & TMROF_EN)) {
109 expire_time = muldiv64(s->tmr_overflow_time, ticks_per_sec, PM_FREQ);
110 qemu_mod_timer(s->tmr_timer, expire_time);
112 qemu_del_timer(s->tmr_timer);
116 static void pm_tmr_timer(void *opaque)
118 PIIX4PMState *s = opaque;
122 static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
124 PIIX4PMState *s = opaque;
131 pmsts = get_pmsts(s);
132 if (pmsts & val & TMROF_EN) {
133 /* if TMRSTS is reset, then compute the new overflow time */
134 d = muldiv64(qemu_get_clock(vm_clock), PM_FREQ, 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);
441 pm_io_space_update((PIIX4PMState *)d);
444 static void pm_save(QEMUFile* f,void *opaque)
446 PIIX4PMState *s = opaque;
448 pci_device_save(&s->dev, f);
450 qemu_put_be16s(f, &s->pmsts);
451 qemu_put_be16s(f, &s->pmen);
452 qemu_put_be16s(f, &s->pmcntrl);
453 qemu_put_8s(f, &s->apmc);
454 qemu_put_8s(f, &s->apms);
455 qemu_put_timer(f, s->tmr_timer);
456 qemu_put_be64(f, s->tmr_overflow_time);
459 static int pm_load(QEMUFile* f,void* opaque,int version_id)
461 PIIX4PMState *s = opaque;
467 ret = pci_device_load(&s->dev, f);
471 qemu_get_be16s(f, &s->pmsts);
472 qemu_get_be16s(f, &s->pmen);
473 qemu_get_be16s(f, &s->pmcntrl);
474 qemu_get_8s(f, &s->apmc);
475 qemu_get_8s(f, &s->apms);
476 qemu_get_timer(f, s->tmr_timer);
477 s->tmr_overflow_time=qemu_get_be64(f);
479 pm_io_space_update(s);
484 static void piix4_reset(void *opaque)
486 PIIX4PMState *s = opaque;
487 uint8_t *pci_conf = s->dev.config;
495 /* Mark SMM as already inited (until KVM supports SMM). */
496 pci_conf[0x5B] = 0x02;
500 i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
506 s = (PIIX4PMState *)pci_register_device(bus,
507 "PM", sizeof(PIIX4PMState),
508 devfn, NULL, pm_write_config);
510 pci_conf = s->dev.config;
511 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
512 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371AB_3);
513 pci_conf[0x06] = 0x80;
514 pci_conf[0x07] = 0x02;
515 pci_conf[0x08] = 0x03; // revision number
516 pci_conf[0x09] = 0x00;
517 pci_config_set_class(pci_conf, PCI_CLASS_BRIDGE_OTHER);
518 pci_conf[0x0e] = 0x00; // header_type
519 pci_conf[0x3d] = 0x01; // interrupt pin 1
521 pci_conf[0x40] = 0x01; /* PM io base read only bit */
523 register_ioport_write(0xb2, 2, 1, pm_smi_writeb, s);
524 register_ioport_read(0xb2, 2, 1, pm_smi_readb, s);
526 register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s);
529 /* Mark SMM as already inited to prevent SMM from running. KVM does not
530 * support SMM mode. */
531 pci_conf[0x5B] = 0x02;
534 /* XXX: which specification is used ? The i82731AB has different
536 pci_conf[0x5f] = (parallel_hds[0] != NULL ? 0x80 : 0) | 0x10;
537 pci_conf[0x63] = 0x60;
538 pci_conf[0x67] = (serial_hds[0] != NULL ? 0x08 : 0) |
539 (serial_hds[1] != NULL ? 0x90 : 0);
541 pci_conf[0x90] = smb_io_base | 1;
542 pci_conf[0x91] = smb_io_base >> 8;
543 pci_conf[0xd2] = 0x09;
544 register_ioport_write(smb_io_base, 64, 1, smb_ioport_writeb, s);
545 register_ioport_read(smb_io_base, 64, 1, smb_ioport_readb, s);
547 s->tmr_timer = qemu_new_timer(vm_clock, pm_tmr_timer, s);
549 register_savevm("piix4_pm", 0, 1, pm_save, pm_load, s);
551 s->smbus = i2c_init_bus();
553 qemu_register_reset(piix4_reset, s);
558 #if defined(TARGET_I386)
559 void qemu_system_powerdown(void)
562 qemu_system_shutdown_request();
563 } else if (pm_state->pmen & PWRBTN_EN) {
564 pm_state->pmsts |= PWRBTN_EN;
565 pm_update_sci(pm_state);
570 #define GPE_BASE 0xafe0
571 #define PCI_BASE 0xae00
572 #define PCI_EJ_BASE 0xae08
575 uint16_t sts; /* status */
576 uint16_t en; /* enabled */
584 static struct gpe_regs gpe;
585 static struct pci_status pci0_status;
587 static uint32_t gpe_read_val(uint16_t val, uint32_t addr)
590 return (val >> 8) & 0xff;
594 static uint32_t gpe_readb(void *opaque, uint32_t addr)
597 struct gpe_regs *g = opaque;
601 val = gpe_read_val(g->sts, addr);
605 val = gpe_read_val(g->en, addr);
612 printf("gpe read %x == %x\n", addr, val);
617 static void gpe_write_val(uint16_t *cur, int addr, uint32_t val)
620 *cur = (*cur & 0xff) | (val << 8);
622 *cur = (*cur & 0xff00) | (val & 0xff);
625 static void gpe_reset_val(uint16_t *cur, int addr, uint32_t val)
627 uint16_t x1, x0 = val & 0xff;
628 int shift = (addr & 1) ? 8 : 0;
630 x1 = (*cur >> shift) & 0xff;
634 *cur = (*cur & (0xff << (8 - shift))) | (x1 << shift);
637 static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
639 struct gpe_regs *g = opaque;
643 gpe_reset_val(&g->sts, addr, val);
647 gpe_write_val(&g->en, addr, val);
654 printf("gpe write %x <== %d\n", addr, val);
658 static uint32_t pcihotplug_read(void *opaque, uint32_t addr)
661 struct pci_status *g = opaque;
674 printf("pcihotplug read %x == %x\n", addr, val);
679 static void pcihotplug_write(void *opaque, uint32_t addr, uint32_t val)
681 struct pci_status *g = opaque;
692 printf("pcihotplug write %x <== %d\n", addr, val);
696 static uint32_t pciej_read(void *opaque, uint32_t addr)
699 printf("pciej read %x\n", addr);
704 static void pciej_write(void *opaque, uint32_t addr, uint32_t val)
706 #if defined (TARGET_I386)
707 int slot = ffs(val) - 1;
709 pci_device_hot_remove_success(0, slot);
713 printf("pciej write %x <== %d\n", addr, val);
717 void qemu_system_hot_add_init(void)
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, NULL);
726 register_ioport_read(PCI_EJ_BASE, 4, 4, pciej_read, NULL);
729 static void enable_device(struct pci_status *p, struct gpe_regs *g, int slot)
732 p->up |= (1 << slot);
735 static void disable_device(struct pci_status *p, struct gpe_regs *g, int slot)
738 p->down |= (1 << slot);
741 void qemu_system_device_hot_add(int bus, int slot, int state)
744 pci0_status.down = 0;
746 enable_device(&pci0_status, &gpe, slot);
748 disable_device(&pci0_status, &gpe, slot);
750 qemu_set_irq(pm_state->irq, 1);
751 qemu_set_irq(pm_state->irq, 0);
755 struct acpi_table_header
757 char signature [4]; /* ACPI signature (4 ASCII characters) */
758 uint32_t length; /* Length of table, in bytes, including header */
759 uint8_t revision; /* ACPI Specification minor version # */
760 uint8_t checksum; /* To make sum of entire table == 0 */
761 char oem_id [6]; /* OEM identification */
762 char oem_table_id [8]; /* OEM table identification */
763 uint32_t oem_revision; /* OEM revision number */
764 char asl_compiler_id [4]; /* ASL compiler vendor ID */
765 uint32_t asl_compiler_revision; /* ASL compiler revision number */
766 } __attribute__((packed));
769 size_t acpi_tables_len;
771 static int acpi_checksum(const uint8_t *data, int len)
775 for(i = 0; i < len; i++)
777 return (-sum) & 0xff;
780 int acpi_table_add(const char *t)
782 static const char *dfl_id = "QEMUQEMU";
783 char buf[1024], *p, *f;
784 struct acpi_table_header acpi_hdr;
788 memset(&acpi_hdr, 0, sizeof(acpi_hdr));
790 if (get_param_value(buf, sizeof(buf), "sig", t)) {
791 strncpy(acpi_hdr.signature, buf, 4);
793 strncpy(acpi_hdr.signature, dfl_id, 4);
795 if (get_param_value(buf, sizeof(buf), "rev", t)) {
796 val = strtoul(buf, &p, 10);
797 if (val > 255 || *p != '\0')
802 acpi_hdr.revision = (int8_t)val;
804 if (get_param_value(buf, sizeof(buf), "oem_id", t)) {
805 strncpy(acpi_hdr.oem_id, buf, 6);
807 strncpy(acpi_hdr.oem_id, dfl_id, 6);
810 if (get_param_value(buf, sizeof(buf), "oem_table_id", t)) {
811 strncpy(acpi_hdr.oem_table_id, buf, 8);
813 strncpy(acpi_hdr.oem_table_id, dfl_id, 8);
816 if (get_param_value(buf, sizeof(buf), "oem_rev", t)) {
817 val = strtol(buf, &p, 10);
823 acpi_hdr.oem_revision = cpu_to_le32(val);
825 if (get_param_value(buf, sizeof(buf), "asl_compiler_id", t)) {
826 strncpy(acpi_hdr.asl_compiler_id, buf, 4);
828 strncpy(acpi_hdr.asl_compiler_id, dfl_id, 4);
831 if (get_param_value(buf, sizeof(buf), "asl_compiler_rev", t)) {
832 val = strtol(buf, &p, 10);
838 acpi_hdr.asl_compiler_revision = cpu_to_le32(val);
840 if (!get_param_value(buf, sizeof(buf), "data", t)) {
844 acpi_hdr.length = sizeof(acpi_hdr);
849 char *n = strchr(f, ':');
852 if(stat(f, &s) < 0) {
853 fprintf(stderr, "Can't stat file '%s': %s\n", f, strerror(errno));
856 acpi_hdr.length += s.st_size;
864 acpi_tables_len = sizeof(uint16_t);
865 acpi_tables = qemu_mallocz(acpi_tables_len);
867 p = acpi_tables + acpi_tables_len;
868 acpi_tables_len += sizeof(uint16_t) + acpi_hdr.length;
869 acpi_tables = qemu_realloc(acpi_tables, acpi_tables_len);
871 acpi_hdr.length = cpu_to_le32(acpi_hdr.length);
872 *(uint16_t*)p = acpi_hdr.length;
873 p += sizeof(uint16_t);
874 memcpy(p, &acpi_hdr, sizeof(acpi_hdr));
875 off = sizeof(acpi_hdr);
881 char *n = strchr(f, ':');
884 fd = open(f, O_RDONLY);
888 if(fstat(fd, &s) < 0) {
895 r = read(fd, p + off, s.st_size);
899 } else if ((r < 0 && errno != EINTR) || r == 0) {
911 ((struct acpi_table_header*)p)->checksum = acpi_checksum((uint8_t*)p, off);
912 /* increase number of tables */
913 (*(uint16_t*)acpi_tables) =
914 cpu_to_le32(le32_to_cpu(*(uint16_t*)acpi_tables) + 1);