4 * Copyright (c) 2004 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 #define PCI_VENDOR_ID 0x00 /* 16 bits */
29 #define PCI_DEVICE_ID 0x02 /* 16 bits */
30 #define PCI_COMMAND 0x04 /* 16 bits */
31 #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
32 #define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */
33 #define PCI_CLASS_DEVICE 0x0a /* Device class */
34 #define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
35 #define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
36 #define PCI_MIN_GNT 0x3e /* 8 bits */
37 #define PCI_MAX_LAT 0x3f /* 8 bits */
39 /* just used for simpler irq handling. */
40 #define PCI_DEVICES_MAX 64
41 #define PCI_IRQ_WORDS ((PCI_DEVICES_MAX + 31) / 32)
43 typedef struct PCIBridge {
45 PCIDevice **pci_bus[256];
48 static PCIBridge pci_bridge;
49 target_phys_addr_t pci_mem_base;
50 static int pci_irq_index;
51 static uint32_t pci_irq_levels[4][PCI_IRQ_WORDS];
53 /* -1 for devfn means auto assign */
54 PCIDevice *pci_register_device(const char *name, int instance_size,
55 int bus_num, int devfn,
56 PCIConfigReadFunc *config_read,
57 PCIConfigWriteFunc *config_write)
59 PCIBridge *s = &pci_bridge;
60 PCIDevice *pci_dev, **bus;
62 if (pci_irq_index >= PCI_DEVICES_MAX)
65 if (!s->pci_bus[bus_num]) {
66 s->pci_bus[bus_num] = qemu_mallocz(256 * sizeof(PCIDevice *));
67 if (!s->pci_bus[bus_num])
70 bus = s->pci_bus[bus_num];
72 for(devfn = 0 ; devfn < 256; devfn += 8) {
79 pci_dev = qemu_mallocz(instance_size);
82 pci_dev->bus_num = bus_num;
83 pci_dev->devfn = devfn;
84 pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
87 config_read = pci_default_read_config;
89 config_write = pci_default_write_config;
90 pci_dev->config_read = config_read;
91 pci_dev->config_write = config_write;
92 pci_dev->irq_index = pci_irq_index++;
97 void pci_register_io_region(PCIDevice *pci_dev, int region_num,
98 uint32_t size, int type,
99 PCIMapIORegionFunc *map_func)
103 if ((unsigned int)region_num >= PCI_NUM_REGIONS)
105 r = &pci_dev->io_regions[region_num];
109 r->map_func = map_func;
112 static void pci_addr_writel(void* opaque, uint32_t addr, uint32_t val)
114 PCIBridge *s = opaque;
118 static uint32_t pci_addr_readl(void* opaque, uint32_t addr)
120 PCIBridge *s = opaque;
121 return s->config_reg;
124 static void pci_update_mappings(PCIDevice *d)
128 uint32_t last_addr, new_addr, config_ofs;
130 cmd = le16_to_cpu(*(uint16_t *)(d->config + PCI_COMMAND));
131 for(i = 0; i < PCI_NUM_REGIONS; i++) {
132 r = &d->io_regions[i];
133 if (i == PCI_ROM_SLOT) {
136 config_ofs = 0x10 + i * 4;
139 if (r->type & PCI_ADDRESS_SPACE_IO) {
140 if (cmd & PCI_COMMAND_IO) {
141 new_addr = le32_to_cpu(*(uint32_t *)(d->config +
143 new_addr = new_addr & ~(r->size - 1);
144 last_addr = new_addr + r->size - 1;
145 /* NOTE: we have only 64K ioports on PC */
146 if (last_addr <= new_addr || new_addr == 0 ||
147 last_addr >= 0x10000) {
154 if (cmd & PCI_COMMAND_MEMORY) {
155 new_addr = le32_to_cpu(*(uint32_t *)(d->config +
157 /* the ROM slot has a specific enable bit */
158 if (i == PCI_ROM_SLOT && !(new_addr & 1))
160 new_addr = new_addr & ~(r->size - 1);
161 last_addr = new_addr + r->size - 1;
162 /* NOTE: we do not support wrapping */
163 /* XXX: as we cannot support really dynamic
164 mappings, we handle specific values as invalid
166 if (last_addr <= new_addr || new_addr == 0 ||
175 /* now do the real mapping */
176 if (new_addr != r->addr) {
178 if (r->type & PCI_ADDRESS_SPACE_IO) {
180 /* NOTE: specific hack for IDE in PC case:
181 only one byte must be mapped. */
182 class = d->config[0x0a] | (d->config[0x0b] << 8);
183 if (class == 0x0101 && r->size == 4) {
184 isa_unassign_ioport(r->addr + 2, 1);
186 isa_unassign_ioport(r->addr, r->size);
189 cpu_register_physical_memory(r->addr + pci_mem_base,
196 r->map_func(d, i, r->addr, r->size, r->type);
203 uint32_t pci_default_read_config(PCIDevice *d,
204 uint32_t address, int len)
209 val = d->config[address];
212 val = le16_to_cpu(*(uint16_t *)(d->config + address));
216 val = le32_to_cpu(*(uint32_t *)(d->config + address));
222 void pci_default_write_config(PCIDevice *d,
223 uint32_t address, uint32_t val, int len)
228 if (len == 4 && ((address >= 0x10 && address < 0x10 + 4 * 6) ||
229 (address >= 0x30 && address < 0x34))) {
233 if ( address >= 0x30 ) {
236 reg = (address - 0x10) >> 2;
238 r = &d->io_regions[reg];
241 /* compute the stored value */
242 if (reg == PCI_ROM_SLOT) {
243 /* keep ROM enable bit */
244 val &= (~(r->size - 1)) | 1;
246 val &= ~(r->size - 1);
249 *(uint32_t *)(d->config + address) = cpu_to_le32(val);
250 pci_update_mappings(d);
254 /* not efficient, but simple */
256 for(i = 0; i < len; i++) {
257 /* default read/write accesses */
258 switch(d->config[0x0e]) {
271 case 0x10 ... 0x27: /* base */
272 case 0x30 ... 0x33: /* rom */
293 case 0x38 ... 0x3b: /* rom */
304 d->config[addr] = val;
311 if (end > PCI_COMMAND && address < (PCI_COMMAND + 2)) {
312 /* if the command register is modified, we must modify the mappings */
313 pci_update_mappings(d);
317 static void pci_data_write(void *opaque, uint32_t addr,
318 uint32_t val, int len)
320 PCIBridge *s = opaque;
321 PCIDevice **bus, *pci_dev;
324 #if defined(DEBUG_PCI) && 0
325 printf("pci_data_write: addr=%08x val=%08x len=%d\n",
326 s->config_reg, val, len);
328 if (!(s->config_reg & (1 << 31))) {
331 if ((s->config_reg & 0x3) != 0) {
334 bus = s->pci_bus[(s->config_reg >> 16) & 0xff];
337 pci_dev = bus[(s->config_reg >> 8) & 0xff];
340 config_addr = (s->config_reg & 0xfc) | (addr & 3);
341 #if defined(DEBUG_PCI)
342 printf("pci_config_write: %s: addr=%02x val=%08x len=%d\n",
343 pci_dev->name, config_addr, val, len);
345 pci_dev->config_write(pci_dev, config_addr, val, len);
348 static uint32_t pci_data_read(void *opaque, uint32_t addr,
351 PCIBridge *s = opaque;
352 PCIDevice **bus, *pci_dev;
356 if (!(s->config_reg & (1 << 31)))
358 if ((s->config_reg & 0x3) != 0)
360 bus = s->pci_bus[(s->config_reg >> 16) & 0xff];
363 pci_dev = bus[(s->config_reg >> 8) & 0xff];
380 config_addr = (s->config_reg & 0xfc) | (addr & 3);
381 val = pci_dev->config_read(pci_dev, config_addr, len);
382 #if defined(DEBUG_PCI)
383 printf("pci_config_read: %s: addr=%02x val=%08x len=%d\n",
384 pci_dev->name, config_addr, val, len);
387 #if defined(DEBUG_PCI) && 0
388 printf("pci_data_read: addr=%08x val=%08x len=%d\n",
389 s->config_reg, val, len);
394 static void pci_data_writeb(void* opaque, uint32_t addr, uint32_t val)
396 pci_data_write(opaque, addr, val, 1);
399 static void pci_data_writew(void* opaque, uint32_t addr, uint32_t val)
401 pci_data_write(opaque, addr, val, 2);
404 static void pci_data_writel(void* opaque, uint32_t addr, uint32_t val)
406 pci_data_write(opaque, addr, val, 4);
409 static uint32_t pci_data_readb(void* opaque, uint32_t addr)
411 return pci_data_read(opaque, addr, 1);
414 static uint32_t pci_data_readw(void* opaque, uint32_t addr)
416 return pci_data_read(opaque, addr, 2);
419 static uint32_t pci_data_readl(void* opaque, uint32_t addr)
421 return pci_data_read(opaque, addr, 4);
424 /* i440FX PCI bridge */
426 void i440fx_init(void)
428 PCIBridge *s = &pci_bridge;
431 register_ioport_write(0xcf8, 4, 4, pci_addr_writel, s);
432 register_ioport_read(0xcf8, 4, 4, pci_addr_readl, s);
434 register_ioport_write(0xcfc, 4, 1, pci_data_writeb, s);
435 register_ioport_write(0xcfc, 4, 2, pci_data_writew, s);
436 register_ioport_write(0xcfc, 4, 4, pci_data_writel, s);
437 register_ioport_read(0xcfc, 4, 1, pci_data_readb, s);
438 register_ioport_read(0xcfc, 4, 2, pci_data_readw, s);
439 register_ioport_read(0xcfc, 4, 4, pci_data_readl, s);
441 d = pci_register_device("i440FX", sizeof(PCIDevice), 0, 0,
444 d->config[0x00] = 0x86; // vendor_id
445 d->config[0x01] = 0x80;
446 d->config[0x02] = 0x37; // device_id
447 d->config[0x03] = 0x12;
448 d->config[0x08] = 0x02; // revision
449 d->config[0x0a] = 0x04; // class_sub = pci2pci
450 d->config[0x0b] = 0x06; // class_base = PCI_bridge
451 d->config[0x0c] = 0x01; // line_size in 32 bit words
452 d->config[0x0e] = 0x01; // header_type
455 /* PIIX3 PCI to ISA bridge */
457 typedef struct PIIX3State {
461 PIIX3State *piix3_state;
463 static void piix3_reset(PIIX3State *d)
465 uint8_t *pci_conf = d->dev.config;
467 pci_conf[0x04] = 0x07; // master, memory and I/O
468 pci_conf[0x05] = 0x00;
469 pci_conf[0x06] = 0x00;
470 pci_conf[0x07] = 0x02; // PCI_status_devsel_medium
471 pci_conf[0x4c] = 0x4d;
472 pci_conf[0x4e] = 0x03;
473 pci_conf[0x4f] = 0x00;
474 pci_conf[0x60] = 0x80;
475 pci_conf[0x69] = 0x02;
476 pci_conf[0x70] = 0x80;
477 pci_conf[0x76] = 0x0c;
478 pci_conf[0x77] = 0x0c;
479 pci_conf[0x78] = 0x02;
480 pci_conf[0x79] = 0x00;
481 pci_conf[0x80] = 0x00;
482 pci_conf[0x82] = 0x00;
483 pci_conf[0xa0] = 0x08;
484 pci_conf[0xa0] = 0x08;
485 pci_conf[0xa2] = 0x00;
486 pci_conf[0xa3] = 0x00;
487 pci_conf[0xa4] = 0x00;
488 pci_conf[0xa5] = 0x00;
489 pci_conf[0xa6] = 0x00;
490 pci_conf[0xa7] = 0x00;
491 pci_conf[0xa8] = 0x0f;
492 pci_conf[0xaa] = 0x00;
493 pci_conf[0xab] = 0x00;
494 pci_conf[0xac] = 0x00;
495 pci_conf[0xae] = 0x00;
498 void piix3_init(void)
503 d = (PIIX3State *)pci_register_device("PIIX3", sizeof(PIIX3State),
507 pci_conf = d->dev.config;
509 pci_conf[0x00] = 0x86; // Intel
510 pci_conf[0x01] = 0x80;
511 pci_conf[0x02] = 0x00; // 82371SB PIIX3 PCI-to-ISA bridge (Step A1)
512 pci_conf[0x03] = 0x70;
513 pci_conf[0x0a] = 0x01; // class_sub = PCI_ISA
514 pci_conf[0x0b] = 0x06; // class_base = PCI_bridge
515 pci_conf[0x0e] = 0x80; // header_type = PCI_multifunction, generic
522 static inline void set_config(PCIBridge *s, target_phys_addr_t addr)
526 for(i = 0; i < 11; i++) {
527 if ((addr & (1 << (11 + i))) != 0)
530 devfn = ((addr >> 8) & 7) | (i << 3);
531 s->config_reg = 0x80000000 | (addr & 0xfc) | (devfn << 8);
534 static void PPC_PCIIO_writeb (void *opaque, target_phys_addr_t addr, uint32_t val)
536 PCIBridge *s = opaque;
538 pci_data_write(s, addr, val, 1);
541 static void PPC_PCIIO_writew (void *opaque, target_phys_addr_t addr, uint32_t val)
543 PCIBridge *s = opaque;
545 #ifdef TARGET_WORDS_BIGENDIAN
548 pci_data_write(s, addr, val, 2);
551 static void PPC_PCIIO_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
553 PCIBridge *s = opaque;
555 #ifdef TARGET_WORDS_BIGENDIAN
558 pci_data_write(s, addr, val, 4);
561 static uint32_t PPC_PCIIO_readb (void *opaque, target_phys_addr_t addr)
563 PCIBridge *s = opaque;
566 val = pci_data_read(s, addr, 1);
570 static uint32_t PPC_PCIIO_readw (void *opaque, target_phys_addr_t addr)
572 PCIBridge *s = opaque;
575 val = pci_data_read(s, addr, 2);
576 #ifdef TARGET_WORDS_BIGENDIAN
582 static uint32_t PPC_PCIIO_readl (void *opaque, target_phys_addr_t addr)
584 PCIBridge *s = opaque;
587 val = pci_data_read(s, addr, 4);
588 #ifdef TARGET_WORDS_BIGENDIAN
594 static CPUWriteMemoryFunc *PPC_PCIIO_write[] = {
600 static CPUReadMemoryFunc *PPC_PCIIO_read[] = {
606 void pci_prep_init(void)
608 PCIBridge *s = &pci_bridge;
612 PPC_io_memory = cpu_register_io_memory(0, PPC_PCIIO_read,
614 cpu_register_physical_memory(0x80800000, 0x00400000, PPC_io_memory);
616 d = pci_register_device("PREP PCI Bridge", sizeof(PCIDevice), 0, 0,
619 /* XXX: put correct IDs */
620 d->config[0x00] = 0x11; // vendor_id
621 d->config[0x01] = 0x10;
622 d->config[0x02] = 0x26; // device_id
623 d->config[0x03] = 0x00;
624 d->config[0x08] = 0x02; // revision
625 d->config[0x0a] = 0x04; // class_sub = pci2pci
626 d->config[0x0b] = 0x06; // class_base = PCI_bridge
627 d->config[0x0e] = 0x01; // header_type
633 static void pci_pmac_config_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
635 PCIBridge *s = opaque;
636 #ifdef TARGET_WORDS_BIGENDIAN
642 static uint32_t pci_pmac_config_readl (void *opaque, target_phys_addr_t addr)
644 PCIBridge *s = opaque;
648 #ifdef TARGET_WORDS_BIGENDIAN
654 static CPUWriteMemoryFunc *pci_pmac_config_write[] = {
655 &pci_pmac_config_writel,
656 &pci_pmac_config_writel,
657 &pci_pmac_config_writel,
660 static CPUReadMemoryFunc *pci_pmac_config_read[] = {
661 &pci_pmac_config_readl,
662 &pci_pmac_config_readl,
663 &pci_pmac_config_readl,
666 static void pci_pmac_writeb (void *opaque, target_phys_addr_t addr, uint32_t val)
668 PCIBridge *s = opaque;
669 pci_data_write(s, addr, val, 1);
672 static void pci_pmac_writew (void *opaque, target_phys_addr_t addr, uint32_t val)
674 PCIBridge *s = opaque;
675 #ifdef TARGET_WORDS_BIGENDIAN
678 pci_data_write(s, addr, val, 2);
681 static void pci_pmac_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
683 PCIBridge *s = opaque;
684 #ifdef TARGET_WORDS_BIGENDIAN
687 pci_data_write(s, addr, val, 4);
690 static uint32_t pci_pmac_readb (void *opaque, target_phys_addr_t addr)
692 PCIBridge *s = opaque;
694 val = pci_data_read(s, addr, 1);
698 static uint32_t pci_pmac_readw (void *opaque, target_phys_addr_t addr)
700 PCIBridge *s = opaque;
702 val = pci_data_read(s, addr, 2);
703 #ifdef TARGET_WORDS_BIGENDIAN
709 static uint32_t pci_pmac_readl (void *opaque, target_phys_addr_t addr)
711 PCIBridge *s = opaque;
714 val = pci_data_read(s, addr, 4);
715 #ifdef TARGET_WORDS_BIGENDIAN
721 static CPUWriteMemoryFunc *pci_pmac_write[] = {
727 static CPUReadMemoryFunc *pci_pmac_read[] = {
733 void pci_pmac_init(void)
735 PCIBridge *s = &pci_bridge;
737 int pci_mem_config, pci_mem_data;
739 pci_mem_config = cpu_register_io_memory(0, pci_pmac_config_read,
740 pci_pmac_config_write, s);
741 pci_mem_data = cpu_register_io_memory(0, pci_pmac_read, pci_pmac_write, s);
743 cpu_register_physical_memory(0xfec00000, 0x1000, pci_mem_config);
744 cpu_register_physical_memory(0xfee00000, 0x1000, pci_mem_data);
746 d = pci_register_device("MPC106", sizeof(PCIDevice), 0, 0,
749 /* same values as PearPC - check this */
750 d->config[0x00] = 0x11; // vendor_id
751 d->config[0x01] = 0x10;
752 d->config[0x02] = 0x26; // device_id
753 d->config[0x03] = 0x00;
754 d->config[0x08] = 0x02; // revision
755 d->config[0x0a] = 0x04; // class_sub = pci2pci
756 d->config[0x0b] = 0x06; // class_base = PCI_bridge
757 d->config[0x0e] = 0x01; // header_type
759 d->config[0x18] = 0x0; // primary_bus
760 d->config[0x19] = 0x1; // secondary_bus
761 d->config[0x1a] = 0x1; // subordinate_bus
762 d->config[0x1c] = 0x10; // io_base
763 d->config[0x1d] = 0x20; // io_limit
765 d->config[0x20] = 0x80; // memory_base
766 d->config[0x21] = 0x80;
767 d->config[0x22] = 0x90; // memory_limit
768 d->config[0x23] = 0x80;
770 d->config[0x24] = 0x00; // prefetchable_memory_base
771 d->config[0x25] = 0x84;
772 d->config[0x26] = 0x00; // prefetchable_memory_limit
773 d->config[0x27] = 0x85;
776 /***********************************************************/
777 /* generic PCI irq support */
779 /* return the global irq number corresponding to a given device irq
780 pin. We could also use the bus number to have a more precise
782 static inline int pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
785 slot_addend = (pci_dev->devfn >> 3);
786 return (irq_num + slot_addend) & 3;
789 /* 0 <= irq_num <= 3. level must be 0 or 1 */
791 void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level)
795 void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level)
797 int irq_index, shift, pic_irq, pic_level;
800 irq_num = pci_slot_get_pirq(pci_dev, irq_num);
801 irq_index = pci_dev->irq_index;
802 p = &pci_irq_levels[irq_num][irq_index >> 5];
803 shift = (irq_index & 0x1f);
804 *p = (*p & ~(1 << shift)) | (level << shift);
806 /* now we change the pic irq level according to the piix irq mappings */
807 pic_irq = piix3_state->dev.config[0x60 + irq_num];
809 /* the pic level is the logical OR of all the PCI irqs mapped
812 #if (PCI_IRQ_WORDS == 2)
813 pic_level = ((pci_irq_levels[irq_num][0] |
814 pci_irq_levels[irq_num][1]) != 0);
819 for(i = 0; i < PCI_IRQ_WORDS; i++) {
820 if (pci_irq_levels[irq_num][i]) {
827 pic_set_irq(pic_irq, pic_level);
832 /***********************************************************/
833 /* monitor info on PCI */
835 static void pci_info_device(PCIDevice *d)
840 printf(" Bus %2d, device %3d, function %d:\n",
841 d->bus_num, d->devfn >> 3, d->devfn & 7);
842 class = le16_to_cpu(*((uint16_t *)(d->config + PCI_CLASS_DEVICE)));
846 printf("IDE controller");
849 printf("Ethernet controller");
852 printf("VGA controller");
855 printf("Class %04x", class);
858 printf(": PCI device %04x:%04x\n",
859 le16_to_cpu(*((uint16_t *)(d->config + PCI_VENDOR_ID))),
860 le16_to_cpu(*((uint16_t *)(d->config + PCI_DEVICE_ID))));
862 if (d->config[PCI_INTERRUPT_PIN] != 0) {
863 printf(" IRQ %d.\n", d->config[PCI_INTERRUPT_LINE]);
865 for(i = 0;i < PCI_NUM_REGIONS; i++) {
866 r = &d->io_regions[i];
868 printf(" BAR%d: ", i);
869 if (r->type & PCI_ADDRESS_SPACE_IO) {
870 printf("I/O at 0x%04x [0x%04x].\n",
871 r->addr, r->addr + r->size - 1);
873 printf("32 bit memory at 0x%08x [0x%08x].\n",
874 r->addr, r->addr + r->size - 1);
882 PCIBridge *s = &pci_bridge;
886 for(bus_num = 0; bus_num < 256; bus_num++) {
887 bus = s->pci_bus[bus_num];
889 for(devfn = 0; devfn < 256; devfn++) {
891 pci_info_device(bus[devfn]);
897 /***********************************************************/
898 /* XXX: the following should be moved to the PC BIOS */
900 static uint32_t isa_inb(uint32_t addr)
902 return cpu_inb(cpu_single_env, addr);
905 static void isa_outb(uint32_t val, uint32_t addr)
907 cpu_outb(cpu_single_env, addr, val);
910 static uint32_t isa_inw(uint32_t addr)
912 return cpu_inw(cpu_single_env, addr);
915 static void isa_outw(uint32_t val, uint32_t addr)
917 cpu_outw(cpu_single_env, addr, val);
920 static uint32_t isa_inl(uint32_t addr)
922 return cpu_inl(cpu_single_env, addr);
925 static void isa_outl(uint32_t val, uint32_t addr)
927 cpu_outl(cpu_single_env, addr, val);
930 static void pci_config_writel(PCIDevice *d, uint32_t addr, uint32_t val)
932 PCIBridge *s = &pci_bridge;
933 s->config_reg = 0x80000000 | (d->bus_num << 16) |
934 (d->devfn << 8) | addr;
935 pci_data_write(s, 0, val, 4);
938 static void pci_config_writew(PCIDevice *d, uint32_t addr, uint32_t val)
940 PCIBridge *s = &pci_bridge;
941 s->config_reg = 0x80000000 | (d->bus_num << 16) |
942 (d->devfn << 8) | (addr & ~3);
943 pci_data_write(s, addr & 3, val, 2);
946 static void pci_config_writeb(PCIDevice *d, uint32_t addr, uint32_t val)
948 PCIBridge *s = &pci_bridge;
949 s->config_reg = 0x80000000 | (d->bus_num << 16) |
950 (d->devfn << 8) | (addr & ~3);
951 pci_data_write(s, addr & 3, val, 1);
954 static uint32_t pci_config_readl(PCIDevice *d, uint32_t addr)
956 PCIBridge *s = &pci_bridge;
957 s->config_reg = 0x80000000 | (d->bus_num << 16) |
958 (d->devfn << 8) | addr;
959 return pci_data_read(s, 0, 4);
962 static uint32_t pci_config_readw(PCIDevice *d, uint32_t addr)
964 PCIBridge *s = &pci_bridge;
965 s->config_reg = 0x80000000 | (d->bus_num << 16) |
966 (d->devfn << 8) | (addr & ~3);
967 return pci_data_read(s, addr & 3, 2);
970 static uint32_t pci_config_readb(PCIDevice *d, uint32_t addr)
972 PCIBridge *s = &pci_bridge;
973 s->config_reg = 0x80000000 | (d->bus_num << 16) |
974 (d->devfn << 8) | (addr & ~3);
975 return pci_data_read(s, addr & 3, 1);
978 static uint32_t pci_bios_io_addr;
979 static uint32_t pci_bios_mem_addr;
980 /* host irqs corresponding to PCI irqs A-D */
981 static uint8_t pci_irqs[4] = { 11, 9, 11, 9 };
983 static void pci_set_io_region_addr(PCIDevice *d, int region_num, uint32_t addr)
989 if ( region_num == PCI_ROM_SLOT ) {
992 ofs = 0x10 + region_num * 4;
995 pci_config_writel(d, ofs, addr);
996 r = &d->io_regions[region_num];
998 /* enable memory mappings */
999 cmd = pci_config_readw(d, PCI_COMMAND);
1000 if ( region_num == PCI_ROM_SLOT )
1002 else if (r->type & PCI_ADDRESS_SPACE_IO)
1006 pci_config_writew(d, PCI_COMMAND, cmd);
1009 static void pci_bios_init_device(PCIDevice *d)
1014 int i, pin, pic_irq, vendor_id, device_id;
1016 class = pci_config_readw(d, PCI_CLASS_DEVICE);
1017 vendor_id = pci_config_readw(d, PCI_VENDOR_ID);
1018 device_id = pci_config_readw(d, PCI_DEVICE_ID);
1021 if (vendor_id == 0x8086 && device_id == 0x7010) {
1023 pci_config_writew(d, PCI_COMMAND, PCI_COMMAND_IO);
1024 pci_config_writew(d, 0x40, 0x8000); // enable IDE0
1026 /* IDE: we map it as in ISA mode */
1027 pci_set_io_region_addr(d, 0, 0x1f0);
1028 pci_set_io_region_addr(d, 1, 0x3f4);
1029 pci_set_io_region_addr(d, 2, 0x170);
1030 pci_set_io_region_addr(d, 3, 0x374);
1034 /* VGA: map frame buffer to default Bochs VBE address */
1035 pci_set_io_region_addr(d, 0, 0xE0000000);
1038 if (vendor_id == 0x0106b && device_id == 0x0017) {
1040 pci_set_io_region_addr(d, 0, 0x80800000);
1044 /* default memory mappings */
1045 for(i = 0; i < PCI_NUM_REGIONS; i++) {
1046 r = &d->io_regions[i];
1048 if (r->type & PCI_ADDRESS_SPACE_IO)
1049 paddr = &pci_bios_io_addr;
1051 paddr = &pci_bios_mem_addr;
1052 *paddr = (*paddr + r->size - 1) & ~(r->size - 1);
1053 pci_set_io_region_addr(d, i, *paddr);
1060 /* map the interrupt */
1061 pin = pci_config_readb(d, PCI_INTERRUPT_PIN);
1063 pin = pci_slot_get_pirq(d, pin - 1);
1064 pic_irq = pci_irqs[pin];
1065 pci_config_writeb(d, PCI_INTERRUPT_LINE, pic_irq);
1070 * This function initializes the PCI devices as a normal PCI BIOS
1071 * would do. It is provided just in case the BIOS has no support for
1074 void pci_bios_init(void)
1076 PCIBridge *s = &pci_bridge;
1078 int bus_num, devfn, i, irq;
1081 pci_bios_io_addr = 0xc000;
1082 pci_bios_mem_addr = 0xf0000000;
1084 /* activate IRQ mappings */
1087 for(i = 0; i < 4; i++) {
1089 /* set to trigger level */
1090 elcr[irq >> 3] |= (1 << (irq & 7));
1091 /* activate irq remapping in PIIX */
1092 pci_config_writeb((PCIDevice *)piix3_state, 0x60 + i, irq);
1094 isa_outb(elcr[0], 0x4d0);
1095 isa_outb(elcr[1], 0x4d1);
1097 for(bus_num = 0; bus_num < 256; bus_num++) {
1098 bus = s->pci_bus[bus_num];
1100 for(devfn = 0; devfn < 256; devfn++) {
1102 pci_bios_init_device(bus[devfn]);
1109 * This function initializes the PCI devices as a normal PCI BIOS
1110 * would do. It is provided just in case the BIOS has no support for
1113 void pci_ppc_bios_init(void)
1115 PCIBridge *s = &pci_bridge;
1117 int bus_num, devfn, i, irq;
1120 pci_bios_io_addr = 0xc000;
1121 pci_bios_mem_addr = 0xc0000000;
1124 /* activate IRQ mappings */
1127 for(i = 0; i < 4; i++) {
1129 /* set to trigger level */
1130 elcr[irq >> 3] |= (1 << (irq & 7));
1131 /* activate irq remapping in PIIX */
1132 pci_config_writeb((PCIDevice *)piix3_state, 0x60 + i, irq);
1134 isa_outb(elcr[0], 0x4d0);
1135 isa_outb(elcr[1], 0x4d1);
1138 for(bus_num = 0; bus_num < 256; bus_num++) {
1139 bus = s->pci_bus[bus_num];
1141 for(devfn = 0; devfn < 256; devfn++) {
1143 pci_bios_init_device(bus[devfn]);