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] = 0x00; // class_sub = host2pci
450 d->config[0x0b] = 0x06; // class_base = PCI_bridge
451 d->config[0x0e] = 0x00; // header_type
454 /* PIIX3 PCI to ISA bridge */
456 typedef struct PIIX3State {
460 PIIX3State *piix3_state;
462 static void piix3_reset(PIIX3State *d)
464 uint8_t *pci_conf = d->dev.config;
466 pci_conf[0x04] = 0x07; // master, memory and I/O
467 pci_conf[0x05] = 0x00;
468 pci_conf[0x06] = 0x00;
469 pci_conf[0x07] = 0x02; // PCI_status_devsel_medium
470 pci_conf[0x4c] = 0x4d;
471 pci_conf[0x4e] = 0x03;
472 pci_conf[0x4f] = 0x00;
473 pci_conf[0x60] = 0x80;
474 pci_conf[0x69] = 0x02;
475 pci_conf[0x70] = 0x80;
476 pci_conf[0x76] = 0x0c;
477 pci_conf[0x77] = 0x0c;
478 pci_conf[0x78] = 0x02;
479 pci_conf[0x79] = 0x00;
480 pci_conf[0x80] = 0x00;
481 pci_conf[0x82] = 0x00;
482 pci_conf[0xa0] = 0x08;
483 pci_conf[0xa0] = 0x08;
484 pci_conf[0xa2] = 0x00;
485 pci_conf[0xa3] = 0x00;
486 pci_conf[0xa4] = 0x00;
487 pci_conf[0xa5] = 0x00;
488 pci_conf[0xa6] = 0x00;
489 pci_conf[0xa7] = 0x00;
490 pci_conf[0xa8] = 0x0f;
491 pci_conf[0xaa] = 0x00;
492 pci_conf[0xab] = 0x00;
493 pci_conf[0xac] = 0x00;
494 pci_conf[0xae] = 0x00;
497 void piix3_init(void)
502 d = (PIIX3State *)pci_register_device("PIIX3", sizeof(PIIX3State),
506 pci_conf = d->dev.config;
508 pci_conf[0x00] = 0x86; // Intel
509 pci_conf[0x01] = 0x80;
510 pci_conf[0x02] = 0x00; // 82371SB PIIX3 PCI-to-ISA bridge (Step A1)
511 pci_conf[0x03] = 0x70;
512 pci_conf[0x0a] = 0x01; // class_sub = PCI_ISA
513 pci_conf[0x0b] = 0x06; // class_base = PCI_bridge
514 pci_conf[0x0e] = 0x80; // header_type = PCI_multifunction, generic
521 static inline void set_config(PCIBridge *s, target_phys_addr_t addr)
525 for(i = 0; i < 11; i++) {
526 if ((addr & (1 << (11 + i))) != 0)
529 devfn = ((addr >> 8) & 7) | (i << 3);
530 s->config_reg = 0x80000000 | (addr & 0xfc) | (devfn << 8);
533 static void PPC_PCIIO_writeb (void *opaque, target_phys_addr_t addr, uint32_t val)
535 PCIBridge *s = opaque;
537 pci_data_write(s, addr, val, 1);
540 static void PPC_PCIIO_writew (void *opaque, target_phys_addr_t addr, uint32_t val)
542 PCIBridge *s = opaque;
544 #ifdef TARGET_WORDS_BIGENDIAN
547 pci_data_write(s, addr, val, 2);
550 static void PPC_PCIIO_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
552 PCIBridge *s = opaque;
554 #ifdef TARGET_WORDS_BIGENDIAN
557 pci_data_write(s, addr, val, 4);
560 static uint32_t PPC_PCIIO_readb (void *opaque, target_phys_addr_t addr)
562 PCIBridge *s = opaque;
565 val = pci_data_read(s, addr, 1);
569 static uint32_t PPC_PCIIO_readw (void *opaque, target_phys_addr_t addr)
571 PCIBridge *s = opaque;
574 val = pci_data_read(s, addr, 2);
575 #ifdef TARGET_WORDS_BIGENDIAN
581 static uint32_t PPC_PCIIO_readl (void *opaque, target_phys_addr_t addr)
583 PCIBridge *s = opaque;
586 val = pci_data_read(s, addr, 4);
587 #ifdef TARGET_WORDS_BIGENDIAN
593 static CPUWriteMemoryFunc *PPC_PCIIO_write[] = {
599 static CPUReadMemoryFunc *PPC_PCIIO_read[] = {
605 void pci_prep_init(void)
607 PCIBridge *s = &pci_bridge;
611 PPC_io_memory = cpu_register_io_memory(0, PPC_PCIIO_read,
613 cpu_register_physical_memory(0x80800000, 0x00400000, PPC_io_memory);
615 d = pci_register_device("PREP PCI Bridge", sizeof(PCIDevice), 0, 0,
618 /* XXX: put correct IDs */
619 d->config[0x00] = 0x11; // vendor_id
620 d->config[0x01] = 0x10;
621 d->config[0x02] = 0x26; // device_id
622 d->config[0x03] = 0x00;
623 d->config[0x08] = 0x02; // revision
624 d->config[0x0a] = 0x04; // class_sub = pci2pci
625 d->config[0x0b] = 0x06; // class_base = PCI_bridge
626 d->config[0x0e] = 0x01; // header_type
632 static void pci_pmac_config_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
634 PCIBridge *s = opaque;
635 #ifdef TARGET_WORDS_BIGENDIAN
641 static uint32_t pci_pmac_config_readl (void *opaque, target_phys_addr_t addr)
643 PCIBridge *s = opaque;
647 #ifdef TARGET_WORDS_BIGENDIAN
653 static CPUWriteMemoryFunc *pci_pmac_config_write[] = {
654 &pci_pmac_config_writel,
655 &pci_pmac_config_writel,
656 &pci_pmac_config_writel,
659 static CPUReadMemoryFunc *pci_pmac_config_read[] = {
660 &pci_pmac_config_readl,
661 &pci_pmac_config_readl,
662 &pci_pmac_config_readl,
665 static void pci_pmac_writeb (void *opaque, target_phys_addr_t addr, uint32_t val)
667 PCIBridge *s = opaque;
668 pci_data_write(s, addr, val, 1);
671 static void pci_pmac_writew (void *opaque, target_phys_addr_t addr, uint32_t val)
673 PCIBridge *s = opaque;
674 #ifdef TARGET_WORDS_BIGENDIAN
677 pci_data_write(s, addr, val, 2);
680 static void pci_pmac_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
682 PCIBridge *s = opaque;
683 #ifdef TARGET_WORDS_BIGENDIAN
686 pci_data_write(s, addr, val, 4);
689 static uint32_t pci_pmac_readb (void *opaque, target_phys_addr_t addr)
691 PCIBridge *s = opaque;
693 val = pci_data_read(s, addr, 1);
697 static uint32_t pci_pmac_readw (void *opaque, target_phys_addr_t addr)
699 PCIBridge *s = opaque;
701 val = pci_data_read(s, addr, 2);
702 #ifdef TARGET_WORDS_BIGENDIAN
708 static uint32_t pci_pmac_readl (void *opaque, target_phys_addr_t addr)
710 PCIBridge *s = opaque;
713 val = pci_data_read(s, addr, 4);
714 #ifdef TARGET_WORDS_BIGENDIAN
720 static CPUWriteMemoryFunc *pci_pmac_write[] = {
726 static CPUReadMemoryFunc *pci_pmac_read[] = {
732 void pci_pmac_init(void)
734 PCIBridge *s = &pci_bridge;
736 int pci_mem_config, pci_mem_data;
738 pci_mem_config = cpu_register_io_memory(0, pci_pmac_config_read,
739 pci_pmac_config_write, s);
740 pci_mem_data = cpu_register_io_memory(0, pci_pmac_read, pci_pmac_write, s);
742 cpu_register_physical_memory(0xfec00000, 0x1000, pci_mem_config);
743 cpu_register_physical_memory(0xfee00000, 0x1000, pci_mem_data);
745 d = pci_register_device("MPC106", sizeof(PCIDevice), 0, 0,
748 /* same values as PearPC - check this */
749 d->config[0x00] = 0x11; // vendor_id
750 d->config[0x01] = 0x10;
751 d->config[0x02] = 0x26; // device_id
752 d->config[0x03] = 0x00;
753 d->config[0x08] = 0x02; // revision
754 d->config[0x0a] = 0x04; // class_sub = pci2pci
755 d->config[0x0b] = 0x06; // class_base = PCI_bridge
756 d->config[0x0e] = 0x01; // header_type
758 d->config[0x18] = 0x0; // primary_bus
759 d->config[0x19] = 0x1; // secondary_bus
760 d->config[0x1a] = 0x1; // subordinate_bus
761 d->config[0x1c] = 0x10; // io_base
762 d->config[0x1d] = 0x20; // io_limit
764 d->config[0x20] = 0x80; // memory_base
765 d->config[0x21] = 0x80;
766 d->config[0x22] = 0x90; // memory_limit
767 d->config[0x23] = 0x80;
769 d->config[0x24] = 0x00; // prefetchable_memory_base
770 d->config[0x25] = 0x84;
771 d->config[0x26] = 0x00; // prefetchable_memory_limit
772 d->config[0x27] = 0x85;
775 /***********************************************************/
776 /* generic PCI irq support */
778 /* return the global irq number corresponding to a given device irq
779 pin. We could also use the bus number to have a more precise
781 static inline int pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
784 slot_addend = (pci_dev->devfn >> 3);
785 return (irq_num + slot_addend) & 3;
788 /* 0 <= irq_num <= 3. level must be 0 or 1 */
790 void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level)
794 void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level)
796 int irq_index, shift, pic_irq, pic_level;
799 irq_num = pci_slot_get_pirq(pci_dev, irq_num);
800 irq_index = pci_dev->irq_index;
801 p = &pci_irq_levels[irq_num][irq_index >> 5];
802 shift = (irq_index & 0x1f);
803 *p = (*p & ~(1 << shift)) | (level << shift);
805 /* now we change the pic irq level according to the piix irq mappings */
806 pic_irq = piix3_state->dev.config[0x60 + irq_num];
808 /* the pic level is the logical OR of all the PCI irqs mapped
811 #if (PCI_IRQ_WORDS == 2)
812 pic_level = ((pci_irq_levels[irq_num][0] |
813 pci_irq_levels[irq_num][1]) != 0);
818 for(i = 0; i < PCI_IRQ_WORDS; i++) {
819 if (pci_irq_levels[irq_num][i]) {
826 pic_set_irq(pic_irq, pic_level);
831 /***********************************************************/
832 /* monitor info on PCI */
834 static void pci_info_device(PCIDevice *d)
839 printf(" Bus %2d, device %3d, function %d:\n",
840 d->bus_num, d->devfn >> 3, d->devfn & 7);
841 class = le16_to_cpu(*((uint16_t *)(d->config + PCI_CLASS_DEVICE)));
845 printf("IDE controller");
848 printf("Ethernet controller");
851 printf("VGA controller");
854 printf("Class %04x", class);
857 printf(": PCI device %04x:%04x\n",
858 le16_to_cpu(*((uint16_t *)(d->config + PCI_VENDOR_ID))),
859 le16_to_cpu(*((uint16_t *)(d->config + PCI_DEVICE_ID))));
861 if (d->config[PCI_INTERRUPT_PIN] != 0) {
862 printf(" IRQ %d.\n", d->config[PCI_INTERRUPT_LINE]);
864 for(i = 0;i < PCI_NUM_REGIONS; i++) {
865 r = &d->io_regions[i];
867 printf(" BAR%d: ", i);
868 if (r->type & PCI_ADDRESS_SPACE_IO) {
869 printf("I/O at 0x%04x [0x%04x].\n",
870 r->addr, r->addr + r->size - 1);
872 printf("32 bit memory at 0x%08x [0x%08x].\n",
873 r->addr, r->addr + r->size - 1);
881 PCIBridge *s = &pci_bridge;
885 for(bus_num = 0; bus_num < 256; bus_num++) {
886 bus = s->pci_bus[bus_num];
888 for(devfn = 0; devfn < 256; devfn++) {
890 pci_info_device(bus[devfn]);
896 /***********************************************************/
897 /* XXX: the following should be moved to the PC BIOS */
899 static uint32_t isa_inb(uint32_t addr)
901 return cpu_inb(cpu_single_env, addr);
904 static void isa_outb(uint32_t val, uint32_t addr)
906 cpu_outb(cpu_single_env, addr, val);
909 static uint32_t isa_inw(uint32_t addr)
911 return cpu_inw(cpu_single_env, addr);
914 static void isa_outw(uint32_t val, uint32_t addr)
916 cpu_outw(cpu_single_env, addr, val);
919 static uint32_t isa_inl(uint32_t addr)
921 return cpu_inl(cpu_single_env, addr);
924 static void isa_outl(uint32_t val, uint32_t addr)
926 cpu_outl(cpu_single_env, addr, val);
929 static void pci_config_writel(PCIDevice *d, uint32_t addr, uint32_t val)
931 PCIBridge *s = &pci_bridge;
932 s->config_reg = 0x80000000 | (d->bus_num << 16) |
933 (d->devfn << 8) | addr;
934 pci_data_write(s, 0, val, 4);
937 static void pci_config_writew(PCIDevice *d, uint32_t addr, uint32_t val)
939 PCIBridge *s = &pci_bridge;
940 s->config_reg = 0x80000000 | (d->bus_num << 16) |
941 (d->devfn << 8) | (addr & ~3);
942 pci_data_write(s, addr & 3, val, 2);
945 static void pci_config_writeb(PCIDevice *d, uint32_t addr, uint32_t val)
947 PCIBridge *s = &pci_bridge;
948 s->config_reg = 0x80000000 | (d->bus_num << 16) |
949 (d->devfn << 8) | (addr & ~3);
950 pci_data_write(s, addr & 3, val, 1);
953 static uint32_t pci_config_readl(PCIDevice *d, uint32_t addr)
955 PCIBridge *s = &pci_bridge;
956 s->config_reg = 0x80000000 | (d->bus_num << 16) |
957 (d->devfn << 8) | addr;
958 return pci_data_read(s, 0, 4);
961 static uint32_t pci_config_readw(PCIDevice *d, uint32_t addr)
963 PCIBridge *s = &pci_bridge;
964 s->config_reg = 0x80000000 | (d->bus_num << 16) |
965 (d->devfn << 8) | (addr & ~3);
966 return pci_data_read(s, addr & 3, 2);
969 static uint32_t pci_config_readb(PCIDevice *d, uint32_t addr)
971 PCIBridge *s = &pci_bridge;
972 s->config_reg = 0x80000000 | (d->bus_num << 16) |
973 (d->devfn << 8) | (addr & ~3);
974 return pci_data_read(s, addr & 3, 1);
977 static uint32_t pci_bios_io_addr;
978 static uint32_t pci_bios_mem_addr;
979 /* host irqs corresponding to PCI irqs A-D */
980 static uint8_t pci_irqs[4] = { 11, 9, 11, 9 };
982 static void pci_set_io_region_addr(PCIDevice *d, int region_num, uint32_t addr)
988 if ( region_num == PCI_ROM_SLOT ) {
991 ofs = 0x10 + region_num * 4;
994 pci_config_writel(d, ofs, addr);
995 r = &d->io_regions[region_num];
997 /* enable memory mappings */
998 cmd = pci_config_readw(d, PCI_COMMAND);
999 if ( region_num == PCI_ROM_SLOT )
1001 else if (r->type & PCI_ADDRESS_SPACE_IO)
1005 pci_config_writew(d, PCI_COMMAND, cmd);
1008 static void pci_bios_init_device(PCIDevice *d)
1013 int i, pin, pic_irq, vendor_id, device_id;
1015 class = pci_config_readw(d, PCI_CLASS_DEVICE);
1016 vendor_id = pci_config_readw(d, PCI_VENDOR_ID);
1017 device_id = pci_config_readw(d, PCI_DEVICE_ID);
1020 if (vendor_id == 0x8086 && device_id == 0x7010) {
1022 pci_config_writew(d, PCI_COMMAND, PCI_COMMAND_IO);
1023 pci_config_writew(d, 0x40, 0x8000); // enable IDE0
1025 /* IDE: we map it as in ISA mode */
1026 pci_set_io_region_addr(d, 0, 0x1f0);
1027 pci_set_io_region_addr(d, 1, 0x3f4);
1028 pci_set_io_region_addr(d, 2, 0x170);
1029 pci_set_io_region_addr(d, 3, 0x374);
1033 if (vendor_id != 0x1234)
1035 /* VGA: map frame buffer to default Bochs VBE address */
1036 pci_set_io_region_addr(d, 0, 0xE0000000);
1039 if (vendor_id == 0x0106b && device_id == 0x0017) {
1041 pci_set_io_region_addr(d, 0, 0x80800000);
1046 /* default memory mappings */
1047 for(i = 0; i < PCI_NUM_REGIONS; i++) {
1048 r = &d->io_regions[i];
1050 if (r->type & PCI_ADDRESS_SPACE_IO)
1051 paddr = &pci_bios_io_addr;
1053 paddr = &pci_bios_mem_addr;
1054 *paddr = (*paddr + r->size - 1) & ~(r->size - 1);
1055 pci_set_io_region_addr(d, i, *paddr);
1062 /* map the interrupt */
1063 pin = pci_config_readb(d, PCI_INTERRUPT_PIN);
1065 pin = pci_slot_get_pirq(d, pin - 1);
1066 pic_irq = pci_irqs[pin];
1067 pci_config_writeb(d, PCI_INTERRUPT_LINE, pic_irq);
1072 * This function initializes the PCI devices as a normal PCI BIOS
1073 * would do. It is provided just in case the BIOS has no support for
1076 void pci_bios_init(void)
1078 PCIBridge *s = &pci_bridge;
1080 int bus_num, devfn, i, irq;
1083 pci_bios_io_addr = 0xc000;
1084 pci_bios_mem_addr = 0xf0000000;
1086 /* activate IRQ mappings */
1089 for(i = 0; i < 4; i++) {
1091 /* set to trigger level */
1092 elcr[irq >> 3] |= (1 << (irq & 7));
1093 /* activate irq remapping in PIIX */
1094 pci_config_writeb((PCIDevice *)piix3_state, 0x60 + i, irq);
1096 isa_outb(elcr[0], 0x4d0);
1097 isa_outb(elcr[1], 0x4d1);
1099 for(bus_num = 0; bus_num < 256; bus_num++) {
1100 bus = s->pci_bus[bus_num];
1102 for(devfn = 0; devfn < 256; devfn++) {
1104 pci_bios_init_device(bus[devfn]);
1111 * This function initializes the PCI devices as a normal PCI BIOS
1112 * would do. It is provided just in case the BIOS has no support for
1115 void pci_ppc_bios_init(void)
1117 PCIBridge *s = &pci_bridge;
1119 int bus_num, devfn, i, irq;
1122 pci_bios_io_addr = 0xc000;
1123 pci_bios_mem_addr = 0xc0000000;
1126 /* activate IRQ mappings */
1129 for(i = 0; i < 4; i++) {
1131 /* set to trigger level */
1132 elcr[irq >> 3] |= (1 << (irq & 7));
1133 /* activate irq remapping in PIIX */
1134 pci_config_writeb((PCIDevice *)piix3_state, 0x60 + i, irq);
1136 isa_outb(elcr[0], 0x4d0);
1137 isa_outb(elcr[1], 0x4d1);
1140 for(bus_num = 0; bus_num < 256; bus_num++) {
1141 bus = s->pci_bus[bus_num];
1143 for(devfn = 0; devfn < 256; devfn++) {
1145 pci_bios_init_device(bus[devfn]);