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)
46 void (*set_irq)(PCIDevice *pci_dev, int irq_num, int level);
47 uint32_t config_reg; /* XXX: suppress */
49 SetIRQFunc *low_set_irq;
51 PCIDevice *devices[256];
54 target_phys_addr_t pci_mem_base;
55 static int pci_irq_index;
56 static uint32_t pci_irq_levels[4][PCI_IRQ_WORDS];
57 static PCIBus *first_bus;
59 static PCIBus *pci_register_bus(void)
62 bus = qemu_mallocz(sizeof(PCIBus));
67 void generic_pci_save(QEMUFile* f, void *opaque)
69 PCIDevice* s=(PCIDevice*)opaque;
71 qemu_put_buffer(f, s->config, 256);
74 int generic_pci_load(QEMUFile* f, void *opaque, int version_id)
76 PCIDevice* s=(PCIDevice*)opaque;
81 qemu_get_buffer(f, s->config, 256);
85 /* -1 for devfn means auto assign */
86 PCIDevice *pci_register_device(PCIBus *bus, const char *name,
87 int instance_size, int devfn,
88 PCIConfigReadFunc *config_read,
89 PCIConfigWriteFunc *config_write)
93 if (pci_irq_index >= PCI_DEVICES_MAX)
97 for(devfn = bus->devfn_min ; devfn < 256; devfn += 8) {
98 if (!bus->devices[devfn])
104 pci_dev = qemu_mallocz(instance_size);
108 pci_dev->devfn = devfn;
109 pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
112 config_read = pci_default_read_config;
114 config_write = pci_default_write_config;
115 pci_dev->config_read = config_read;
116 pci_dev->config_write = config_write;
117 pci_dev->irq_index = pci_irq_index++;
118 bus->devices[devfn] = pci_dev;
122 void pci_register_io_region(PCIDevice *pci_dev, int region_num,
123 uint32_t size, int type,
124 PCIMapIORegionFunc *map_func)
129 if ((unsigned int)region_num >= PCI_NUM_REGIONS)
131 r = &pci_dev->io_regions[region_num];
135 r->map_func = map_func;
136 if (region_num == PCI_ROM_SLOT) {
139 addr = 0x10 + region_num * 4;
141 *(uint32_t *)(pci_dev->config + addr) = cpu_to_le32(type);
144 static void pci_addr_writel(void* opaque, uint32_t addr, uint32_t val)
150 static uint32_t pci_addr_readl(void* opaque, uint32_t addr)
153 return s->config_reg;
156 static void pci_update_mappings(PCIDevice *d)
160 uint32_t last_addr, new_addr, config_ofs;
162 cmd = le16_to_cpu(*(uint16_t *)(d->config + PCI_COMMAND));
163 for(i = 0; i < PCI_NUM_REGIONS; i++) {
164 r = &d->io_regions[i];
165 if (i == PCI_ROM_SLOT) {
168 config_ofs = 0x10 + i * 4;
171 if (r->type & PCI_ADDRESS_SPACE_IO) {
172 if (cmd & PCI_COMMAND_IO) {
173 new_addr = le32_to_cpu(*(uint32_t *)(d->config +
175 new_addr = new_addr & ~(r->size - 1);
176 last_addr = new_addr + r->size - 1;
177 /* NOTE: we have only 64K ioports on PC */
178 if (last_addr <= new_addr || new_addr == 0 ||
179 last_addr >= 0x10000) {
186 if (cmd & PCI_COMMAND_MEMORY) {
187 new_addr = le32_to_cpu(*(uint32_t *)(d->config +
189 /* the ROM slot has a specific enable bit */
190 if (i == PCI_ROM_SLOT && !(new_addr & 1))
192 new_addr = new_addr & ~(r->size - 1);
193 last_addr = new_addr + r->size - 1;
194 /* NOTE: we do not support wrapping */
195 /* XXX: as we cannot support really dynamic
196 mappings, we handle specific values as invalid
198 if (last_addr <= new_addr || new_addr == 0 ||
207 /* now do the real mapping */
208 if (new_addr != r->addr) {
210 if (r->type & PCI_ADDRESS_SPACE_IO) {
212 /* NOTE: specific hack for IDE in PC case:
213 only one byte must be mapped. */
214 class = d->config[0x0a] | (d->config[0x0b] << 8);
215 if (class == 0x0101 && r->size == 4) {
216 isa_unassign_ioport(r->addr + 2, 1);
218 isa_unassign_ioport(r->addr, r->size);
221 cpu_register_physical_memory(r->addr + pci_mem_base,
228 r->map_func(d, i, r->addr, r->size, r->type);
235 uint32_t pci_default_read_config(PCIDevice *d,
236 uint32_t address, int len)
241 val = d->config[address];
244 val = le16_to_cpu(*(uint16_t *)(d->config + address));
248 val = le32_to_cpu(*(uint32_t *)(d->config + address));
254 void pci_default_write_config(PCIDevice *d,
255 uint32_t address, uint32_t val, int len)
260 if (len == 4 && ((address >= 0x10 && address < 0x10 + 4 * 6) ||
261 (address >= 0x30 && address < 0x34))) {
265 if ( address >= 0x30 ) {
268 reg = (address - 0x10) >> 2;
270 r = &d->io_regions[reg];
273 /* compute the stored value */
274 if (reg == PCI_ROM_SLOT) {
275 /* keep ROM enable bit */
276 val &= (~(r->size - 1)) | 1;
278 val &= ~(r->size - 1);
281 *(uint32_t *)(d->config + address) = cpu_to_le32(val);
282 pci_update_mappings(d);
286 /* not efficient, but simple */
288 for(i = 0; i < len; i++) {
289 /* default read/write accesses */
290 switch(d->config[0x0e]) {
303 case 0x10 ... 0x27: /* base */
304 case 0x30 ... 0x33: /* rom */
325 case 0x38 ... 0x3b: /* rom */
336 d->config[addr] = val;
343 if (end > PCI_COMMAND && address < (PCI_COMMAND + 2)) {
344 /* if the command register is modified, we must modify the mappings */
345 pci_update_mappings(d);
349 static void pci_data_write(void *opaque, uint32_t addr,
350 uint32_t val, int len)
354 int config_addr, bus_num;
356 #if defined(DEBUG_PCI) && 0
357 printf("pci_data_write: addr=%08x val=%08x len=%d\n",
358 s->config_reg, val, len);
360 if (!(s->config_reg & (1 << 31))) {
363 bus_num = (s->config_reg >> 16) & 0xff;
366 pci_dev = s->devices[(s->config_reg >> 8) & 0xff];
369 config_addr = (s->config_reg & 0xfc) | (addr & 3);
370 #if defined(DEBUG_PCI)
371 printf("pci_config_write: %s: addr=%02x val=%08x len=%d\n",
372 pci_dev->name, config_addr, val, len);
374 pci_dev->config_write(pci_dev, config_addr, val, len);
377 static uint32_t pci_data_read(void *opaque, uint32_t addr,
382 int config_addr, bus_num;
385 if (!(s->config_reg & (1 << 31)))
387 bus_num = (s->config_reg >> 16) & 0xff;
390 pci_dev = s->devices[(s->config_reg >> 8) & 0xff];
407 config_addr = (s->config_reg & 0xfc) | (addr & 3);
408 val = pci_dev->config_read(pci_dev, config_addr, len);
409 #if defined(DEBUG_PCI)
410 printf("pci_config_read: %s: addr=%02x val=%08x len=%d\n",
411 pci_dev->name, config_addr, val, len);
414 #if defined(DEBUG_PCI) && 0
415 printf("pci_data_read: addr=%08x val=%08x len=%d\n",
416 s->config_reg, val, len);
421 static void pci_data_writeb(void* opaque, uint32_t addr, uint32_t val)
423 pci_data_write(opaque, addr, val, 1);
426 static void pci_data_writew(void* opaque, uint32_t addr, uint32_t val)
428 pci_data_write(opaque, addr, val, 2);
431 static void pci_data_writel(void* opaque, uint32_t addr, uint32_t val)
433 pci_data_write(opaque, addr, val, 4);
436 static uint32_t pci_data_readb(void* opaque, uint32_t addr)
438 return pci_data_read(opaque, addr, 1);
441 static uint32_t pci_data_readw(void* opaque, uint32_t addr)
443 return pci_data_read(opaque, addr, 2);
446 static uint32_t pci_data_readl(void* opaque, uint32_t addr)
448 return pci_data_read(opaque, addr, 4);
451 /* i440FX PCI bridge */
453 static void piix3_set_irq(PCIDevice *pci_dev, int irq_num, int level);
455 PCIBus *i440fx_init(void)
460 s = pci_register_bus();
461 s->set_irq = piix3_set_irq;
463 register_ioport_write(0xcf8, 4, 4, pci_addr_writel, s);
464 register_ioport_read(0xcf8, 4, 4, pci_addr_readl, s);
466 register_ioport_write(0xcfc, 4, 1, pci_data_writeb, s);
467 register_ioport_write(0xcfc, 4, 2, pci_data_writew, s);
468 register_ioport_write(0xcfc, 4, 4, pci_data_writel, s);
469 register_ioport_read(0xcfc, 4, 1, pci_data_readb, s);
470 register_ioport_read(0xcfc, 4, 2, pci_data_readw, s);
471 register_ioport_read(0xcfc, 4, 4, pci_data_readl, s);
473 d = pci_register_device(s, "i440FX", sizeof(PCIDevice), 0,
476 d->config[0x00] = 0x86; // vendor_id
477 d->config[0x01] = 0x80;
478 d->config[0x02] = 0x37; // device_id
479 d->config[0x03] = 0x12;
480 d->config[0x08] = 0x02; // revision
481 d->config[0x0a] = 0x00; // class_sub = host2pci
482 d->config[0x0b] = 0x06; // class_base = PCI_bridge
483 d->config[0x0e] = 0x00; // header_type
487 /* PIIX3 PCI to ISA bridge */
489 typedef struct PIIX3State {
493 PIIX3State *piix3_state;
495 /* return the global irq number corresponding to a given device irq
496 pin. We could also use the bus number to have a more precise
498 static inline int pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
501 slot_addend = (pci_dev->devfn >> 3) - 1;
502 return (irq_num + slot_addend) & 3;
505 static inline int get_pci_irq_level(int irq_num)
508 #if (PCI_IRQ_WORDS == 2)
509 pic_level = ((pci_irq_levels[irq_num][0] |
510 pci_irq_levels[irq_num][1]) != 0);
515 for(i = 0; i < PCI_IRQ_WORDS; i++) {
516 if (pci_irq_levels[irq_num][i]) {
526 static void piix3_set_irq(PCIDevice *pci_dev, int irq_num, int level)
528 int irq_index, shift, pic_irq, pic_level;
531 irq_num = pci_slot_get_pirq(pci_dev, irq_num);
532 irq_index = pci_dev->irq_index;
533 p = &pci_irq_levels[irq_num][irq_index >> 5];
534 shift = (irq_index & 0x1f);
535 *p = (*p & ~(1 << shift)) | (level << shift);
537 /* now we change the pic irq level according to the piix irq mappings */
539 pic_irq = piix3_state->dev.config[0x60 + irq_num];
541 /* the pic level is the logical OR of all the PCI irqs mapped
544 if (pic_irq == piix3_state->dev.config[0x60])
545 pic_level |= get_pci_irq_level(0);
546 if (pic_irq == piix3_state->dev.config[0x61])
547 pic_level |= get_pci_irq_level(1);
548 if (pic_irq == piix3_state->dev.config[0x62])
549 pic_level |= get_pci_irq_level(2);
550 if (pic_irq == piix3_state->dev.config[0x63])
551 pic_level |= get_pci_irq_level(3);
552 pic_set_irq(pic_irq, pic_level);
556 static void piix3_reset(PIIX3State *d)
558 uint8_t *pci_conf = d->dev.config;
560 pci_conf[0x04] = 0x07; // master, memory and I/O
561 pci_conf[0x05] = 0x00;
562 pci_conf[0x06] = 0x00;
563 pci_conf[0x07] = 0x02; // PCI_status_devsel_medium
564 pci_conf[0x4c] = 0x4d;
565 pci_conf[0x4e] = 0x03;
566 pci_conf[0x4f] = 0x00;
567 pci_conf[0x60] = 0x80;
568 pci_conf[0x69] = 0x02;
569 pci_conf[0x70] = 0x80;
570 pci_conf[0x76] = 0x0c;
571 pci_conf[0x77] = 0x0c;
572 pci_conf[0x78] = 0x02;
573 pci_conf[0x79] = 0x00;
574 pci_conf[0x80] = 0x00;
575 pci_conf[0x82] = 0x00;
576 pci_conf[0xa0] = 0x08;
577 pci_conf[0xa0] = 0x08;
578 pci_conf[0xa2] = 0x00;
579 pci_conf[0xa3] = 0x00;
580 pci_conf[0xa4] = 0x00;
581 pci_conf[0xa5] = 0x00;
582 pci_conf[0xa6] = 0x00;
583 pci_conf[0xa7] = 0x00;
584 pci_conf[0xa8] = 0x0f;
585 pci_conf[0xaa] = 0x00;
586 pci_conf[0xab] = 0x00;
587 pci_conf[0xac] = 0x00;
588 pci_conf[0xae] = 0x00;
591 void piix3_init(PCIBus *bus)
596 d = (PIIX3State *)pci_register_device(bus, "PIIX3", sizeof(PIIX3State),
598 register_savevm("PIIX3", 0, 1, generic_pci_save, generic_pci_load, d);
601 pci_conf = d->dev.config;
603 pci_conf[0x00] = 0x86; // Intel
604 pci_conf[0x01] = 0x80;
605 pci_conf[0x02] = 0x00; // 82371SB PIIX3 PCI-to-ISA bridge (Step A1)
606 pci_conf[0x03] = 0x70;
607 pci_conf[0x0a] = 0x01; // class_sub = PCI_ISA
608 pci_conf[0x0b] = 0x06; // class_base = PCI_bridge
609 pci_conf[0x0e] = 0x80; // header_type = PCI_multifunction, generic
616 static inline void set_config(PCIBus *s, target_phys_addr_t addr)
620 for(i = 0; i < 11; i++) {
621 if ((addr & (1 << (11 + i))) != 0)
624 devfn = ((addr >> 8) & 7) | (i << 3);
625 s->config_reg = 0x80000000 | (addr & 0xfc) | (devfn << 8);
628 static void PPC_PCIIO_writeb (void *opaque, target_phys_addr_t addr, uint32_t val)
632 pci_data_write(s, addr, val, 1);
635 static void PPC_PCIIO_writew (void *opaque, target_phys_addr_t addr, uint32_t val)
639 #ifdef TARGET_WORDS_BIGENDIAN
642 pci_data_write(s, addr, val, 2);
645 static void PPC_PCIIO_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
649 #ifdef TARGET_WORDS_BIGENDIAN
652 pci_data_write(s, addr, val, 4);
655 static uint32_t PPC_PCIIO_readb (void *opaque, target_phys_addr_t addr)
660 val = pci_data_read(s, addr, 1);
664 static uint32_t PPC_PCIIO_readw (void *opaque, target_phys_addr_t addr)
669 val = pci_data_read(s, addr, 2);
670 #ifdef TARGET_WORDS_BIGENDIAN
676 static uint32_t PPC_PCIIO_readl (void *opaque, target_phys_addr_t addr)
681 val = pci_data_read(s, addr, 4);
682 #ifdef TARGET_WORDS_BIGENDIAN
688 static CPUWriteMemoryFunc *PPC_PCIIO_write[] = {
694 static CPUReadMemoryFunc *PPC_PCIIO_read[] = {
700 static void prep_set_irq(PCIDevice *d, int irq_num, int level)
702 /* XXX: we do not simulate the hardware - we rely on the BIOS to
703 set correctly for irq line field */
704 pic_set_irq(d->config[PCI_INTERRUPT_LINE], level);
707 PCIBus *pci_prep_init(void)
713 s = pci_register_bus();
714 s->set_irq = prep_set_irq;
716 register_ioport_write(0xcf8, 4, 4, pci_addr_writel, s);
717 register_ioport_read(0xcf8, 4, 4, pci_addr_readl, s);
719 register_ioport_write(0xcfc, 4, 1, pci_data_writeb, s);
720 register_ioport_write(0xcfc, 4, 2, pci_data_writew, s);
721 register_ioport_write(0xcfc, 4, 4, pci_data_writel, s);
722 register_ioport_read(0xcfc, 4, 1, pci_data_readb, s);
723 register_ioport_read(0xcfc, 4, 2, pci_data_readw, s);
724 register_ioport_read(0xcfc, 4, 4, pci_data_readl, s);
726 PPC_io_memory = cpu_register_io_memory(0, PPC_PCIIO_read,
728 cpu_register_physical_memory(0x80800000, 0x00400000, PPC_io_memory);
730 /* PCI host bridge */
731 d = pci_register_device(s, "PREP Host Bridge - Motorola Raven",
732 sizeof(PCIDevice), 0, NULL, NULL);
733 d->config[0x00] = 0x57; // vendor_id : Motorola
734 d->config[0x01] = 0x10;
735 d->config[0x02] = 0x01; // device_id : Raven
736 d->config[0x03] = 0x48;
737 d->config[0x08] = 0x00; // revision
738 d->config[0x0A] = 0x00; // class_sub = pci host
739 d->config[0x0B] = 0x06; // class_base = PCI_bridge
740 d->config[0x0C] = 0x08; // cache_line_size
741 d->config[0x0D] = 0x10; // latency_timer
742 d->config[0x0E] = 0x00; // header_type
743 d->config[0x34] = 0x00; // capabilities_pointer
749 /* Grackle PCI host */
750 static void pci_grackle_config_writel (void *opaque, target_phys_addr_t addr,
754 #ifdef TARGET_WORDS_BIGENDIAN
760 static uint32_t pci_grackle_config_readl (void *opaque, target_phys_addr_t addr)
766 #ifdef TARGET_WORDS_BIGENDIAN
772 static CPUWriteMemoryFunc *pci_grackle_config_write[] = {
773 &pci_grackle_config_writel,
774 &pci_grackle_config_writel,
775 &pci_grackle_config_writel,
778 static CPUReadMemoryFunc *pci_grackle_config_read[] = {
779 &pci_grackle_config_readl,
780 &pci_grackle_config_readl,
781 &pci_grackle_config_readl,
784 static void pci_grackle_writeb (void *opaque, target_phys_addr_t addr,
788 pci_data_write(s, addr, val, 1);
791 static void pci_grackle_writew (void *opaque, target_phys_addr_t addr,
795 #ifdef TARGET_WORDS_BIGENDIAN
798 pci_data_write(s, addr, val, 2);
801 static void pci_grackle_writel (void *opaque, target_phys_addr_t addr,
805 #ifdef TARGET_WORDS_BIGENDIAN
808 pci_data_write(s, addr, val, 4);
811 static uint32_t pci_grackle_readb (void *opaque, target_phys_addr_t addr)
815 val = pci_data_read(s, addr, 1);
819 static uint32_t pci_grackle_readw (void *opaque, target_phys_addr_t addr)
823 val = pci_data_read(s, addr, 2);
824 #ifdef TARGET_WORDS_BIGENDIAN
830 static uint32_t pci_grackle_readl (void *opaque, target_phys_addr_t addr)
835 val = pci_data_read(s, addr, 4);
836 #ifdef TARGET_WORDS_BIGENDIAN
842 static CPUWriteMemoryFunc *pci_grackle_write[] = {
848 static CPUReadMemoryFunc *pci_grackle_read[] = {
854 void pci_set_pic(PCIBus *bus, SetIRQFunc *set_irq, void *irq_opaque)
856 bus->low_set_irq = set_irq;
857 bus->irq_opaque = irq_opaque;
860 /* XXX: we do not simulate the hardware - we rely on the BIOS to
861 set correctly for irq line field */
862 static void pci_set_irq_simple(PCIDevice *d, int irq_num, int level)
865 s->low_set_irq(s->irq_opaque, d->config[PCI_INTERRUPT_LINE], level);
868 PCIBus *pci_grackle_init(uint32_t base)
872 int pci_mem_config, pci_mem_data;
874 s = pci_register_bus();
875 s->set_irq = pci_set_irq_simple;
877 pci_mem_config = cpu_register_io_memory(0, pci_grackle_config_read,
878 pci_grackle_config_write, s);
879 pci_mem_data = cpu_register_io_memory(0, pci_grackle_read,
880 pci_grackle_write, s);
881 cpu_register_physical_memory(base, 0x1000, pci_mem_config);
882 cpu_register_physical_memory(base + 0x00200000, 0x1000, pci_mem_data);
883 d = pci_register_device(s, "Grackle host bridge", sizeof(PCIDevice),
885 d->config[0x00] = 0x57; // vendor_id
886 d->config[0x01] = 0x10;
887 d->config[0x02] = 0x02; // device_id
888 d->config[0x03] = 0x00;
889 d->config[0x08] = 0x00; // revision
890 d->config[0x09] = 0x01;
891 d->config[0x0a] = 0x00; // class_sub = host
892 d->config[0x0b] = 0x06; // class_base = PCI_bridge
893 d->config[0x0e] = 0x00; // header_type
895 d->config[0x18] = 0x00; // primary_bus
896 d->config[0x19] = 0x01; // secondary_bus
897 d->config[0x1a] = 0x00; // subordinate_bus
898 d->config[0x1c] = 0x00;
899 d->config[0x1d] = 0x00;
901 d->config[0x20] = 0x00; // memory_base
902 d->config[0x21] = 0x00;
903 d->config[0x22] = 0x01; // memory_limit
904 d->config[0x23] = 0x00;
906 d->config[0x24] = 0x00; // prefetchable_memory_base
907 d->config[0x25] = 0x00;
908 d->config[0x26] = 0x00; // prefetchable_memory_limit
909 d->config[0x27] = 0x00;
912 /* PCI2PCI bridge same values as PearPC - check this */
913 d->config[0x00] = 0x11; // vendor_id
914 d->config[0x01] = 0x10;
915 d->config[0x02] = 0x26; // device_id
916 d->config[0x03] = 0x00;
917 d->config[0x08] = 0x02; // revision
918 d->config[0x0a] = 0x04; // class_sub = pci2pci
919 d->config[0x0b] = 0x06; // class_base = PCI_bridge
920 d->config[0x0e] = 0x01; // header_type
922 d->config[0x18] = 0x0; // primary_bus
923 d->config[0x19] = 0x1; // secondary_bus
924 d->config[0x1a] = 0x1; // subordinate_bus
925 d->config[0x1c] = 0x10; // io_base
926 d->config[0x1d] = 0x20; // io_limit
928 d->config[0x20] = 0x80; // memory_base
929 d->config[0x21] = 0x80;
930 d->config[0x22] = 0x90; // memory_limit
931 d->config[0x23] = 0x80;
933 d->config[0x24] = 0x00; // prefetchable_memory_base
934 d->config[0x25] = 0x84;
935 d->config[0x26] = 0x00; // prefetchable_memory_limit
936 d->config[0x27] = 0x85;
941 /* Uninorth PCI host (for all Mac99 and newer machines */
942 static void pci_unin_main_config_writel (void *opaque, target_phys_addr_t addr,
948 #ifdef TARGET_WORDS_BIGENDIAN
952 for (i = 11; i < 32; i++) {
953 if ((val & (1 << i)) != 0)
957 s->config_reg = 0x80000000 | (1 << 16) | (val & 0x7FC) | (i << 11);
959 s->config_reg = 0x80000000 | (0 << 16) | (val & 0x7FC) | (i << 11);
963 static uint32_t pci_unin_main_config_readl (void *opaque,
964 target_phys_addr_t addr)
970 devfn = (s->config_reg >> 8) & 0xFF;
971 val = (1 << (devfn >> 3)) | ((devfn & 0x07) << 8) | (s->config_reg & 0xFC);
972 #ifdef TARGET_WORDS_BIGENDIAN
979 static CPUWriteMemoryFunc *pci_unin_main_config_write[] = {
980 &pci_unin_main_config_writel,
981 &pci_unin_main_config_writel,
982 &pci_unin_main_config_writel,
985 static CPUReadMemoryFunc *pci_unin_main_config_read[] = {
986 &pci_unin_main_config_readl,
987 &pci_unin_main_config_readl,
988 &pci_unin_main_config_readl,
991 static void pci_unin_main_writeb (void *opaque, target_phys_addr_t addr,
995 pci_data_write(s, addr & 7, val, 1);
998 static void pci_unin_main_writew (void *opaque, target_phys_addr_t addr,
1002 #ifdef TARGET_WORDS_BIGENDIAN
1005 pci_data_write(s, addr & 7, val, 2);
1008 static void pci_unin_main_writel (void *opaque, target_phys_addr_t addr,
1012 #ifdef TARGET_WORDS_BIGENDIAN
1015 pci_data_write(s, addr & 7, val, 4);
1018 static uint32_t pci_unin_main_readb (void *opaque, target_phys_addr_t addr)
1023 val = pci_data_read(s, addr & 7, 1);
1028 static uint32_t pci_unin_main_readw (void *opaque, target_phys_addr_t addr)
1033 val = pci_data_read(s, addr & 7, 2);
1034 #ifdef TARGET_WORDS_BIGENDIAN
1041 static uint32_t pci_unin_main_readl (void *opaque, target_phys_addr_t addr)
1046 val = pci_data_read(s, addr, 4);
1047 #ifdef TARGET_WORDS_BIGENDIAN
1054 static CPUWriteMemoryFunc *pci_unin_main_write[] = {
1055 &pci_unin_main_writeb,
1056 &pci_unin_main_writew,
1057 &pci_unin_main_writel,
1060 static CPUReadMemoryFunc *pci_unin_main_read[] = {
1061 &pci_unin_main_readb,
1062 &pci_unin_main_readw,
1063 &pci_unin_main_readl,
1068 static void pci_unin_config_writel (void *opaque, target_phys_addr_t addr,
1073 #ifdef TARGET_WORDS_BIGENDIAN
1076 s->config_reg = 0x80000000 | (val & ~0x00000001);
1079 static uint32_t pci_unin_config_readl (void *opaque,
1080 target_phys_addr_t addr)
1085 val = (s->config_reg | 0x00000001) & ~0x80000000;
1086 #ifdef TARGET_WORDS_BIGENDIAN
1093 static CPUWriteMemoryFunc *pci_unin_config_write[] = {
1094 &pci_unin_config_writel,
1095 &pci_unin_config_writel,
1096 &pci_unin_config_writel,
1099 static CPUReadMemoryFunc *pci_unin_config_read[] = {
1100 &pci_unin_config_readl,
1101 &pci_unin_config_readl,
1102 &pci_unin_config_readl,
1105 static void pci_unin_writeb (void *opaque, target_phys_addr_t addr,
1109 pci_data_write(s, addr & 3, val, 1);
1112 static void pci_unin_writew (void *opaque, target_phys_addr_t addr,
1116 #ifdef TARGET_WORDS_BIGENDIAN
1119 pci_data_write(s, addr & 3, val, 2);
1122 static void pci_unin_writel (void *opaque, target_phys_addr_t addr,
1126 #ifdef TARGET_WORDS_BIGENDIAN
1129 pci_data_write(s, addr & 3, val, 4);
1132 static uint32_t pci_unin_readb (void *opaque, target_phys_addr_t addr)
1137 val = pci_data_read(s, addr & 3, 1);
1142 static uint32_t pci_unin_readw (void *opaque, target_phys_addr_t addr)
1147 val = pci_data_read(s, addr & 3, 2);
1148 #ifdef TARGET_WORDS_BIGENDIAN
1155 static uint32_t pci_unin_readl (void *opaque, target_phys_addr_t addr)
1160 val = pci_data_read(s, addr & 3, 4);
1161 #ifdef TARGET_WORDS_BIGENDIAN
1168 static CPUWriteMemoryFunc *pci_unin_write[] = {
1174 static CPUReadMemoryFunc *pci_unin_read[] = {
1181 PCIBus *pci_pmac_init(void)
1185 int pci_mem_config, pci_mem_data;
1187 /* Use values found on a real PowerMac */
1188 /* Uninorth main bus */
1189 s = pci_register_bus();
1190 s->set_irq = pci_set_irq_simple;
1192 pci_mem_config = cpu_register_io_memory(0, pci_unin_main_config_read,
1193 pci_unin_main_config_write, s);
1194 pci_mem_data = cpu_register_io_memory(0, pci_unin_main_read,
1195 pci_unin_main_write, s);
1196 cpu_register_physical_memory(0xf2800000, 0x1000, pci_mem_config);
1197 cpu_register_physical_memory(0xf2c00000, 0x1000, pci_mem_data);
1198 s->devfn_min = 11 << 3;
1199 d = pci_register_device(s, "Uni-north main", sizeof(PCIDevice),
1200 11 << 3, NULL, NULL);
1201 d->config[0x00] = 0x6b; // vendor_id : Apple
1202 d->config[0x01] = 0x10;
1203 d->config[0x02] = 0x1F; // device_id
1204 d->config[0x03] = 0x00;
1205 d->config[0x08] = 0x00; // revision
1206 d->config[0x0A] = 0x00; // class_sub = pci host
1207 d->config[0x0B] = 0x06; // class_base = PCI_bridge
1208 d->config[0x0C] = 0x08; // cache_line_size
1209 d->config[0x0D] = 0x10; // latency_timer
1210 d->config[0x0E] = 0x00; // header_type
1211 d->config[0x34] = 0x00; // capabilities_pointer
1213 #if 0 // XXX: not activated as PPC BIOS doesn't handle mutiple buses properly
1214 /* pci-to-pci bridge */
1215 d = pci_register_device("Uni-north bridge", sizeof(PCIDevice), 0, 13 << 3,
1217 d->config[0x00] = 0x11; // vendor_id : TI
1218 d->config[0x01] = 0x10;
1219 d->config[0x02] = 0x26; // device_id
1220 d->config[0x03] = 0x00;
1221 d->config[0x08] = 0x05; // revision
1222 d->config[0x0A] = 0x04; // class_sub = pci2pci
1223 d->config[0x0B] = 0x06; // class_base = PCI_bridge
1224 d->config[0x0C] = 0x08; // cache_line_size
1225 d->config[0x0D] = 0x20; // latency_timer
1226 d->config[0x0E] = 0x01; // header_type
1228 d->config[0x18] = 0x01; // primary_bus
1229 d->config[0x19] = 0x02; // secondary_bus
1230 d->config[0x1A] = 0x02; // subordinate_bus
1231 d->config[0x1B] = 0x20; // secondary_latency_timer
1232 d->config[0x1C] = 0x11; // io_base
1233 d->config[0x1D] = 0x01; // io_limit
1234 d->config[0x20] = 0x00; // memory_base
1235 d->config[0x21] = 0x80;
1236 d->config[0x22] = 0x00; // memory_limit
1237 d->config[0x23] = 0x80;
1238 d->config[0x24] = 0x01; // prefetchable_memory_base
1239 d->config[0x25] = 0x80;
1240 d->config[0x26] = 0xF1; // prefectchable_memory_limit
1241 d->config[0x27] = 0x7F;
1242 // d->config[0x34] = 0xdc // capabilities_pointer
1244 #if 0 // XXX: not needed for now
1245 /* Uninorth AGP bus */
1247 pci_mem_config = cpu_register_io_memory(0, pci_unin_config_read,
1248 pci_unin_config_write, s);
1249 pci_mem_data = cpu_register_io_memory(0, pci_unin_read,
1251 cpu_register_physical_memory(0xf0800000, 0x1000, pci_mem_config);
1252 cpu_register_physical_memory(0xf0c00000, 0x1000, pci_mem_data);
1254 d = pci_register_device("Uni-north AGP", sizeof(PCIDevice), 0, 11 << 3,
1256 d->config[0x00] = 0x6b; // vendor_id : Apple
1257 d->config[0x01] = 0x10;
1258 d->config[0x02] = 0x20; // device_id
1259 d->config[0x03] = 0x00;
1260 d->config[0x08] = 0x00; // revision
1261 d->config[0x0A] = 0x00; // class_sub = pci host
1262 d->config[0x0B] = 0x06; // class_base = PCI_bridge
1263 d->config[0x0C] = 0x08; // cache_line_size
1264 d->config[0x0D] = 0x10; // latency_timer
1265 d->config[0x0E] = 0x00; // header_type
1266 // d->config[0x34] = 0x80; // capabilities_pointer
1269 #if 0 // XXX: not needed for now
1270 /* Uninorth internal bus */
1272 pci_mem_config = cpu_register_io_memory(0, pci_unin_config_read,
1273 pci_unin_config_write, s);
1274 pci_mem_data = cpu_register_io_memory(0, pci_unin_read,
1276 cpu_register_physical_memory(0xf4800000, 0x1000, pci_mem_config);
1277 cpu_register_physical_memory(0xf4c00000, 0x1000, pci_mem_data);
1279 d = pci_register_device("Uni-north internal", sizeof(PCIDevice),
1280 3, 11 << 3, NULL, NULL);
1281 d->config[0x00] = 0x6b; // vendor_id : Apple
1282 d->config[0x01] = 0x10;
1283 d->config[0x02] = 0x1E; // device_id
1284 d->config[0x03] = 0x00;
1285 d->config[0x08] = 0x00; // revision
1286 d->config[0x0A] = 0x00; // class_sub = pci host
1287 d->config[0x0B] = 0x06; // class_base = PCI_bridge
1288 d->config[0x0C] = 0x08; // cache_line_size
1289 d->config[0x0D] = 0x10; // latency_timer
1290 d->config[0x0E] = 0x00; // header_type
1291 d->config[0x34] = 0x00; // capabilities_pointer
1296 /* Ultrasparc APB PCI host */
1297 static void pci_apb_config_writel (void *opaque, target_phys_addr_t addr,
1303 for (i = 11; i < 32; i++) {
1304 if ((val & (1 << i)) != 0)
1307 s->config_reg = 0x80000000 | (1 << 16) | (val & 0x7FC) | (i << 11);
1310 static uint32_t pci_apb_config_readl (void *opaque,
1311 target_phys_addr_t addr)
1317 devfn = (s->config_reg >> 8) & 0xFF;
1318 val = (1 << (devfn >> 3)) | ((devfn & 0x07) << 8) | (s->config_reg & 0xFC);
1322 static CPUWriteMemoryFunc *pci_apb_config_write[] = {
1323 &pci_apb_config_writel,
1324 &pci_apb_config_writel,
1325 &pci_apb_config_writel,
1328 static CPUReadMemoryFunc *pci_apb_config_read[] = {
1329 &pci_apb_config_readl,
1330 &pci_apb_config_readl,
1331 &pci_apb_config_readl,
1334 static void apb_config_writel (void *opaque, target_phys_addr_t addr,
1337 //PCIBus *s = opaque;
1339 switch (addr & 0x3f) {
1340 case 0x00: // Control/Status
1343 case 0x20: // Diagnostic
1344 case 0x28: // Target address space
1351 static uint32_t apb_config_readl (void *opaque,
1352 target_phys_addr_t addr)
1354 //PCIBus *s = opaque;
1357 switch (addr & 0x3f) {
1358 case 0x00: // Control/Status
1361 case 0x20: // Diagnostic
1362 case 0x28: // Target address space
1371 static CPUWriteMemoryFunc *apb_config_write[] = {
1377 static CPUReadMemoryFunc *apb_config_read[] = {
1383 static void pci_apb_writeb (void *opaque, target_phys_addr_t addr,
1388 pci_data_write(s, addr & 7, val, 1);
1391 static void pci_apb_writew (void *opaque, target_phys_addr_t addr,
1396 pci_data_write(s, addr & 7, val, 2);
1399 static void pci_apb_writel (void *opaque, target_phys_addr_t addr,
1404 pci_data_write(s, addr & 7, val, 4);
1407 static uint32_t pci_apb_readb (void *opaque, target_phys_addr_t addr)
1412 val = pci_data_read(s, addr & 7, 1);
1416 static uint32_t pci_apb_readw (void *opaque, target_phys_addr_t addr)
1421 val = pci_data_read(s, addr & 7, 2);
1425 static uint32_t pci_apb_readl (void *opaque, target_phys_addr_t addr)
1430 val = pci_data_read(s, addr, 4);
1434 static CPUWriteMemoryFunc *pci_apb_write[] = {
1440 static CPUReadMemoryFunc *pci_apb_read[] = {
1446 static void pci_apb_iowriteb (void *opaque, target_phys_addr_t addr,
1449 cpu_outb(NULL, addr & 0xffff, val);
1452 static void pci_apb_iowritew (void *opaque, target_phys_addr_t addr,
1455 cpu_outw(NULL, addr & 0xffff, val);
1458 static void pci_apb_iowritel (void *opaque, target_phys_addr_t addr,
1461 cpu_outl(NULL, addr & 0xffff, val);
1464 static uint32_t pci_apb_ioreadb (void *opaque, target_phys_addr_t addr)
1468 val = cpu_inb(NULL, addr & 0xffff);
1472 static uint32_t pci_apb_ioreadw (void *opaque, target_phys_addr_t addr)
1476 val = cpu_inw(NULL, addr & 0xffff);
1480 static uint32_t pci_apb_ioreadl (void *opaque, target_phys_addr_t addr)
1484 val = cpu_inl(NULL, addr & 0xffff);
1488 static CPUWriteMemoryFunc *pci_apb_iowrite[] = {
1494 static CPUReadMemoryFunc *pci_apb_ioread[] = {
1500 PCIBus *pci_apb_init(target_ulong special_base, target_ulong mem_base)
1504 int pci_mem_config, pci_mem_data, apb_config, pci_ioport;
1506 /* Ultrasparc APB main bus */
1507 s = pci_register_bus();
1508 s->set_irq = pci_set_irq_simple;
1510 pci_mem_config = cpu_register_io_memory(0, pci_apb_config_read,
1511 pci_apb_config_write, s);
1512 apb_config = cpu_register_io_memory(0, apb_config_read,
1513 apb_config_write, s);
1514 pci_mem_data = cpu_register_io_memory(0, pci_apb_read,
1516 pci_ioport = cpu_register_io_memory(0, pci_apb_ioread,
1517 pci_apb_iowrite, s);
1519 cpu_register_physical_memory(special_base + 0x2000ULL, 0x40, apb_config);
1520 cpu_register_physical_memory(special_base + 0x1000000ULL, 0x10, pci_mem_config);
1521 cpu_register_physical_memory(special_base + 0x2000000ULL, 0x10000, pci_ioport);
1522 cpu_register_physical_memory(mem_base, 0x10000000, pci_mem_data); // XXX size should be 4G-prom
1524 d = pci_register_device(s, "Advanced PCI Bus", sizeof(PCIDevice),
1526 d->config[0x00] = 0x8e; // vendor_id : Sun
1527 d->config[0x01] = 0x10;
1528 d->config[0x02] = 0x00; // device_id
1529 d->config[0x03] = 0xa0;
1530 d->config[0x04] = 0x06; // command = bus master, pci mem
1531 d->config[0x05] = 0x00;
1532 d->config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error
1533 d->config[0x07] = 0x03; // status = medium devsel
1534 d->config[0x08] = 0x00; // revision
1535 d->config[0x09] = 0x00; // programming i/f
1536 d->config[0x0A] = 0x00; // class_sub = pci host
1537 d->config[0x0B] = 0x06; // class_base = PCI_bridge
1538 d->config[0x0D] = 0x10; // latency_timer
1539 d->config[0x0E] = 0x00; // header_type
1543 /***********************************************************/
1544 /* generic PCI irq support */
1546 /* 0 <= irq_num <= 3. level must be 0 or 1 */
1547 void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level)
1549 PCIBus *bus = pci_dev->bus;
1550 bus->set_irq(pci_dev, irq_num, level);
1553 /***********************************************************/
1554 /* monitor info on PCI */
1556 static void pci_info_device(PCIDevice *d)
1561 term_printf(" Bus %2d, device %3d, function %d:\n",
1562 d->bus->bus_num, d->devfn >> 3, d->devfn & 7);
1563 class = le16_to_cpu(*((uint16_t *)(d->config + PCI_CLASS_DEVICE)));
1567 term_printf("IDE controller");
1570 term_printf("Ethernet controller");
1573 term_printf("VGA controller");
1576 term_printf("Class %04x", class);
1579 term_printf(": PCI device %04x:%04x\n",
1580 le16_to_cpu(*((uint16_t *)(d->config + PCI_VENDOR_ID))),
1581 le16_to_cpu(*((uint16_t *)(d->config + PCI_DEVICE_ID))));
1583 if (d->config[PCI_INTERRUPT_PIN] != 0) {
1584 term_printf(" IRQ %d.\n", d->config[PCI_INTERRUPT_LINE]);
1586 for(i = 0;i < PCI_NUM_REGIONS; i++) {
1587 r = &d->io_regions[i];
1589 term_printf(" BAR%d: ", i);
1590 if (r->type & PCI_ADDRESS_SPACE_IO) {
1591 term_printf("I/O at 0x%04x [0x%04x].\n",
1592 r->addr, r->addr + r->size - 1);
1594 term_printf("32 bit memory at 0x%08x [0x%08x].\n",
1595 r->addr, r->addr + r->size - 1);
1603 PCIBus *bus = first_bus;
1608 for(devfn = 0; devfn < 256; devfn++) {
1609 d = bus->devices[devfn];
1616 /***********************************************************/
1617 /* XXX: the following should be moved to the PC BIOS */
1619 static __attribute__((unused)) uint32_t isa_inb(uint32_t addr)
1621 return cpu_inb(NULL, addr);
1624 static void isa_outb(uint32_t val, uint32_t addr)
1626 cpu_outb(NULL, addr, val);
1629 static __attribute__((unused)) uint32_t isa_inw(uint32_t addr)
1631 return cpu_inw(NULL, addr);
1634 static __attribute__((unused)) void isa_outw(uint32_t val, uint32_t addr)
1636 cpu_outw(NULL, addr, val);
1639 static __attribute__((unused)) uint32_t isa_inl(uint32_t addr)
1641 return cpu_inl(NULL, addr);
1644 static __attribute__((unused)) void isa_outl(uint32_t val, uint32_t addr)
1646 cpu_outl(NULL, addr, val);
1649 static void pci_config_writel(PCIDevice *d, uint32_t addr, uint32_t val)
1652 s->config_reg = 0x80000000 | (s->bus_num << 16) |
1653 (d->devfn << 8) | addr;
1654 pci_data_write(s, 0, val, 4);
1657 static void pci_config_writew(PCIDevice *d, uint32_t addr, uint32_t val)
1660 s->config_reg = 0x80000000 | (s->bus_num << 16) |
1661 (d->devfn << 8) | (addr & ~3);
1662 pci_data_write(s, addr & 3, val, 2);
1665 static void pci_config_writeb(PCIDevice *d, uint32_t addr, uint32_t val)
1668 s->config_reg = 0x80000000 | (s->bus_num << 16) |
1669 (d->devfn << 8) | (addr & ~3);
1670 pci_data_write(s, addr & 3, val, 1);
1673 static __attribute__((unused)) uint32_t pci_config_readl(PCIDevice *d, uint32_t addr)
1676 s->config_reg = 0x80000000 | (s->bus_num << 16) |
1677 (d->devfn << 8) | addr;
1678 return pci_data_read(s, 0, 4);
1681 static uint32_t pci_config_readw(PCIDevice *d, uint32_t addr)
1684 s->config_reg = 0x80000000 | (s->bus_num << 16) |
1685 (d->devfn << 8) | (addr & ~3);
1686 return pci_data_read(s, addr & 3, 2);
1689 static uint32_t pci_config_readb(PCIDevice *d, uint32_t addr)
1692 s->config_reg = 0x80000000 | (s->bus_num << 16) |
1693 (d->devfn << 8) | (addr & ~3);
1694 return pci_data_read(s, addr & 3, 1);
1697 static uint32_t pci_bios_io_addr;
1698 static uint32_t pci_bios_mem_addr;
1699 /* host irqs corresponding to PCI irqs A-D */
1700 static uint8_t pci_irqs[4] = { 11, 9, 11, 9 };
1702 static void pci_set_io_region_addr(PCIDevice *d, int region_num, uint32_t addr)
1708 if ( region_num == PCI_ROM_SLOT ) {
1711 ofs = 0x10 + region_num * 4;
1714 pci_config_writel(d, ofs, addr);
1715 r = &d->io_regions[region_num];
1717 /* enable memory mappings */
1718 cmd = pci_config_readw(d, PCI_COMMAND);
1719 if ( region_num == PCI_ROM_SLOT )
1721 else if (r->type & PCI_ADDRESS_SPACE_IO)
1725 pci_config_writew(d, PCI_COMMAND, cmd);
1728 static void pci_bios_init_device(PCIDevice *d)
1733 int i, pin, pic_irq, vendor_id, device_id;
1735 class = pci_config_readw(d, PCI_CLASS_DEVICE);
1736 vendor_id = pci_config_readw(d, PCI_VENDOR_ID);
1737 device_id = pci_config_readw(d, PCI_DEVICE_ID);
1740 if (vendor_id == 0x8086 && device_id == 0x7010) {
1742 pci_config_writew(d, 0x40, 0x8000); // enable IDE0
1743 pci_config_writew(d, 0x42, 0x8000); // enable IDE1
1746 /* IDE: we map it as in ISA mode */
1747 pci_set_io_region_addr(d, 0, 0x1f0);
1748 pci_set_io_region_addr(d, 1, 0x3f4);
1749 pci_set_io_region_addr(d, 2, 0x170);
1750 pci_set_io_region_addr(d, 3, 0x374);
1754 if (vendor_id != 0x1234)
1756 /* VGA: map frame buffer to default Bochs VBE address */
1757 pci_set_io_region_addr(d, 0, 0xE0000000);
1761 vendor_id = pci_config_readw(d, PCI_VENDOR_ID);
1762 device_id = pci_config_readw(d, PCI_DEVICE_ID);
1763 if (vendor_id == 0x1014) {
1765 if (device_id == 0x0046 || device_id == 0xFFFF) {
1767 pci_set_io_region_addr(d, 0, 0x80800000 + 0x00040000);
1772 if (vendor_id == 0x0106b &&
1773 (device_id == 0x0017 || device_id == 0x0022)) {
1775 pci_set_io_region_addr(d, 0, 0x80800000);
1780 /* default memory mappings */
1781 for(i = 0; i < PCI_NUM_REGIONS; i++) {
1782 r = &d->io_regions[i];
1784 if (r->type & PCI_ADDRESS_SPACE_IO)
1785 paddr = &pci_bios_io_addr;
1787 paddr = &pci_bios_mem_addr;
1788 *paddr = (*paddr + r->size - 1) & ~(r->size - 1);
1789 pci_set_io_region_addr(d, i, *paddr);
1796 /* map the interrupt */
1797 pin = pci_config_readb(d, PCI_INTERRUPT_PIN);
1799 pin = pci_slot_get_pirq(d, pin - 1);
1800 pic_irq = pci_irqs[pin];
1801 pci_config_writeb(d, PCI_INTERRUPT_LINE, pic_irq);
1806 * This function initializes the PCI devices as a normal PCI BIOS
1807 * would do. It is provided just in case the BIOS has no support for
1810 void pci_bios_init(void)
1817 pci_bios_io_addr = 0xc000;
1818 pci_bios_mem_addr = 0xf0000000;
1820 /* activate IRQ mappings */
1823 for(i = 0; i < 4; i++) {
1825 /* set to trigger level */
1826 elcr[irq >> 3] |= (1 << (irq & 7));
1827 /* activate irq remapping in PIIX */
1828 pci_config_writeb((PCIDevice *)piix3_state, 0x60 + i, irq);
1830 isa_outb(elcr[0], 0x4d0);
1831 isa_outb(elcr[1], 0x4d1);
1835 for(devfn = 0; devfn < 256; devfn++) {
1836 d = bus->devices[devfn];
1838 pci_bios_init_device(d);
1843 /* Initialize a PCI NIC. */
1844 void pci_nic_init(PCIBus *bus, NICInfo *nd)
1846 if (strcmp(nd->model, "ne2k_pci") == 0) {
1847 pci_ne2000_init(bus, nd);
1848 } else if (strcmp(nd->model, "rtl8139") == 0) {
1849 pci_rtl8139_init(bus, nd);
1851 fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);