| /* | 
 |  * QEMU i440FX/PIIX3 PCI Bridge Emulation | 
 |  * | 
 |  * Copyright (c) 2006 Fabrice Bellard | 
 |  * | 
 |  * Permission is hereby granted, free of charge, to any person obtaining a copy | 
 |  * of this software and associated documentation files (the "Software"), to deal | 
 |  * in the Software without restriction, including without limitation the rights | 
 |  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | 
 |  * copies of the Software, and to permit persons to whom the Software is | 
 |  * furnished to do so, subject to the following conditions: | 
 |  * | 
 |  * The above copyright notice and this permission notice shall be included in | 
 |  * all copies or substantial portions of the Software. | 
 |  * | 
 |  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | 
 |  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | 
 |  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | 
 |  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | 
 |  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | 
 |  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | 
 |  * THE SOFTWARE. | 
 |  */ | 
 |  | 
 | #include "hw.h" | 
 | #include "pc.h" | 
 | #include "pci.h" | 
 | #include "pci_host.h" | 
 | #include "isa.h" | 
 | #include "sysbus.h" | 
 | #include "range.h" | 
 | #include "xen.h" | 
 |  | 
 | /* | 
 |  * I440FX chipset data sheet. | 
 |  * http://download.intel.com/design/chipsets/datashts/29054901.pdf | 
 |  */ | 
 |  | 
 | typedef struct I440FXState { | 
 |     PCIHostState parent_obj; | 
 | } I440FXState; | 
 |  | 
 | #define PIIX_NUM_PIC_IRQS       16      /* i8259 * 2 */ | 
 | #define PIIX_NUM_PIRQS          4ULL    /* PIRQ[A-D] */ | 
 | #define XEN_PIIX_NUM_PIRQS      128ULL | 
 | #define PIIX_PIRQC              0x60 | 
 |  | 
 | typedef struct PIIX3State { | 
 |     PCIDevice dev; | 
 |  | 
 |     /* | 
 |      * bitmap to track pic levels. | 
 |      * The pic level is the logical OR of all the PCI irqs mapped to it | 
 |      * So one PIC level is tracked by PIIX_NUM_PIRQS bits. | 
 |      * | 
 |      * PIRQ is mapped to PIC pins, we track it by | 
 |      * PIIX_NUM_PIRQS * PIIX_NUM_PIC_IRQS = 64 bits with | 
 |      * pic_irq * PIIX_NUM_PIRQS + pirq | 
 |      */ | 
 | #if PIIX_NUM_PIC_IRQS * PIIX_NUM_PIRQS > 64 | 
 | #error "unable to encode pic state in 64bit in pic_levels." | 
 | #endif | 
 |     uint64_t pic_levels; | 
 |  | 
 |     qemu_irq *pic; | 
 |  | 
 |     /* This member isn't used. Just for save/load compatibility */ | 
 |     int32_t pci_irq_levels_vmstate[PIIX_NUM_PIRQS]; | 
 | } PIIX3State; | 
 |  | 
 | typedef struct PAMMemoryRegion { | 
 |     MemoryRegion mem; | 
 |     bool initialized; | 
 | } PAMMemoryRegion; | 
 |  | 
 | struct PCII440FXState { | 
 |     PCIDevice dev; | 
 |     MemoryRegion *system_memory; | 
 |     MemoryRegion *pci_address_space; | 
 |     MemoryRegion *ram_memory; | 
 |     MemoryRegion pci_hole; | 
 |     MemoryRegion pci_hole_64bit; | 
 |     PAMMemoryRegion pam_regions[13]; | 
 |     MemoryRegion smram_region; | 
 |     uint8_t smm_enabled; | 
 | }; | 
 |  | 
 |  | 
 | #define I440FX_PAM      0x59 | 
 | #define I440FX_PAM_SIZE 7 | 
 | #define I440FX_SMRAM    0x72 | 
 |  | 
 | static void piix3_set_irq(void *opaque, int pirq, int level); | 
 | static PCIINTxRoute piix3_route_intx_pin_to_irq(void *opaque, int pci_intx); | 
 | static void piix3_write_config_xen(PCIDevice *dev, | 
 |                                uint32_t address, uint32_t val, int len); | 
 |  | 
 | /* return the global irq number corresponding to a given device irq | 
 |    pin. We could also use the bus number to have a more precise | 
 |    mapping. */ | 
 | static int pci_slot_get_pirq(PCIDevice *pci_dev, int pci_intx) | 
 | { | 
 |     int slot_addend; | 
 |     slot_addend = (pci_dev->devfn >> 3) - 1; | 
 |     return (pci_intx + slot_addend) & 3; | 
 | } | 
 |  | 
 | static void update_pam(PCII440FXState *d, uint32_t start, uint32_t end, int r, | 
 |                        PAMMemoryRegion *mem) | 
 | { | 
 |     if (mem->initialized) { | 
 |         memory_region_del_subregion(d->system_memory, &mem->mem); | 
 |         memory_region_destroy(&mem->mem); | 
 |     } | 
 |  | 
 |     //    printf("ISA mapping %08x-0x%08x: %d\n", start, end, r); | 
 |     switch(r) { | 
 |     case 3: | 
 |         /* RAM */ | 
 |         memory_region_init_alias(&mem->mem, "pam-ram", d->ram_memory, | 
 |                                  start, end - start); | 
 |         break; | 
 |     case 1: | 
 |         /* ROM (XXX: not quite correct) */ | 
 |         memory_region_init_alias(&mem->mem, "pam-rom", d->ram_memory, | 
 |                                  start, end - start); | 
 |         memory_region_set_readonly(&mem->mem, true); | 
 |         break; | 
 |     case 2: | 
 |     case 0: | 
 |         /* XXX: should distinguish read/write cases */ | 
 |         memory_region_init_alias(&mem->mem, "pam-pci", d->pci_address_space, | 
 |                                  start, end - start); | 
 |         break; | 
 |     } | 
 |     memory_region_add_subregion_overlap(d->system_memory, | 
 |                                         start, &mem->mem, 1); | 
 |     mem->initialized = true; | 
 | } | 
 |  | 
 | static void i440fx_update_memory_mappings(PCII440FXState *d) | 
 | { | 
 |     int i, r; | 
 |     uint32_t smram; | 
 |     bool smram_enabled; | 
 |  | 
 |     memory_region_transaction_begin(); | 
 |     update_pam(d, 0xf0000, 0x100000, (d->dev.config[I440FX_PAM] >> 4) & 3, | 
 |                &d->pam_regions[0]); | 
 |     for(i = 0; i < 12; i++) { | 
 |         r = (d->dev.config[(i >> 1) + (I440FX_PAM + 1)] >> ((i & 1) * 4)) & 3; | 
 |         update_pam(d, 0xc0000 + 0x4000 * i, 0xc0000 + 0x4000 * (i + 1), r, | 
 |                    &d->pam_regions[i+1]); | 
 |     } | 
 |     smram = d->dev.config[I440FX_SMRAM]; | 
 |     smram_enabled = (d->smm_enabled && (smram & 0x08)) || (smram & 0x40); | 
 |     memory_region_set_enabled(&d->smram_region, !smram_enabled); | 
 |     memory_region_transaction_commit(); | 
 | } | 
 |  | 
 | static void i440fx_set_smm(int val, void *arg) | 
 | { | 
 |     PCII440FXState *d = arg; | 
 |  | 
 |     val = (val != 0); | 
 |     if (d->smm_enabled != val) { | 
 |         d->smm_enabled = val; | 
 |         i440fx_update_memory_mappings(d); | 
 |     } | 
 | } | 
 |  | 
 |  | 
 | static void i440fx_write_config(PCIDevice *dev, | 
 |                                 uint32_t address, uint32_t val, int len) | 
 | { | 
 |     PCII440FXState *d = DO_UPCAST(PCII440FXState, dev, dev); | 
 |  | 
 |     /* XXX: implement SMRAM.D_LOCK */ | 
 |     pci_default_write_config(dev, address, val, len); | 
 |     if (ranges_overlap(address, len, I440FX_PAM, I440FX_PAM_SIZE) || | 
 |         range_covers_byte(address, len, I440FX_SMRAM)) { | 
 |         i440fx_update_memory_mappings(d); | 
 |     } | 
 | } | 
 |  | 
 | static int i440fx_load_old(QEMUFile* f, void *opaque, int version_id) | 
 | { | 
 |     PCII440FXState *d = opaque; | 
 |     int ret, i; | 
 |  | 
 |     ret = pci_device_load(&d->dev, f); | 
 |     if (ret < 0) | 
 |         return ret; | 
 |     i440fx_update_memory_mappings(d); | 
 |     qemu_get_8s(f, &d->smm_enabled); | 
 |  | 
 |     if (version_id == 2) { | 
 |         for (i = 0; i < PIIX_NUM_PIRQS; i++) { | 
 |             qemu_get_be32(f); /* dummy load for compatibility */ | 
 |         } | 
 |     } | 
 |  | 
 |     return 0; | 
 | } | 
 |  | 
 | static int i440fx_post_load(void *opaque, int version_id) | 
 | { | 
 |     PCII440FXState *d = opaque; | 
 |  | 
 |     i440fx_update_memory_mappings(d); | 
 |     return 0; | 
 | } | 
 |  | 
 | static const VMStateDescription vmstate_i440fx = { | 
 |     .name = "I440FX", | 
 |     .version_id = 3, | 
 |     .minimum_version_id = 3, | 
 |     .minimum_version_id_old = 1, | 
 |     .load_state_old = i440fx_load_old, | 
 |     .post_load = i440fx_post_load, | 
 |     .fields      = (VMStateField []) { | 
 |         VMSTATE_PCI_DEVICE(dev, PCII440FXState), | 
 |         VMSTATE_UINT8(smm_enabled, PCII440FXState), | 
 |         VMSTATE_END_OF_LIST() | 
 |     } | 
 | }; | 
 |  | 
 | static int i440fx_pcihost_initfn(SysBusDevice *dev) | 
 | { | 
 |     PCIHostState *s = PCI_HOST_BRIDGE(dev); | 
 |  | 
 |     memory_region_init_io(&s->conf_mem, &pci_host_conf_le_ops, s, | 
 |                           "pci-conf-idx", 4); | 
 |     sysbus_add_io(dev, 0xcf8, &s->conf_mem); | 
 |     sysbus_init_ioports(&s->busdev, 0xcf8, 4); | 
 |  | 
 |     memory_region_init_io(&s->data_mem, &pci_host_data_le_ops, s, | 
 |                           "pci-conf-data", 4); | 
 |     sysbus_add_io(dev, 0xcfc, &s->data_mem); | 
 |     sysbus_init_ioports(&s->busdev, 0xcfc, 4); | 
 |  | 
 |     return 0; | 
 | } | 
 |  | 
 | static int i440fx_initfn(PCIDevice *dev) | 
 | { | 
 |     PCII440FXState *d = DO_UPCAST(PCII440FXState, dev, dev); | 
 |  | 
 |     d->dev.config[I440FX_SMRAM] = 0x02; | 
 |  | 
 |     cpu_smm_register(&i440fx_set_smm, d); | 
 |     return 0; | 
 | } | 
 |  | 
 | static PCIBus *i440fx_common_init(const char *device_name, | 
 |                                   PCII440FXState **pi440fx_state, | 
 |                                   int *piix3_devfn, | 
 |                                   ISABus **isa_bus, qemu_irq *pic, | 
 |                                   MemoryRegion *address_space_mem, | 
 |                                   MemoryRegion *address_space_io, | 
 |                                   ram_addr_t ram_size, | 
 |                                   target_phys_addr_t pci_hole_start, | 
 |                                   target_phys_addr_t pci_hole_size, | 
 |                                   target_phys_addr_t pci_hole64_start, | 
 |                                   target_phys_addr_t pci_hole64_size, | 
 |                                   MemoryRegion *pci_address_space, | 
 |                                   MemoryRegion *ram_memory) | 
 | { | 
 |     DeviceState *dev; | 
 |     PCIBus *b; | 
 |     PCIDevice *d; | 
 |     PCIHostState *s; | 
 |     PIIX3State *piix3; | 
 |     PCII440FXState *f; | 
 |  | 
 |     dev = qdev_create(NULL, "i440FX-pcihost"); | 
 |     s = PCI_HOST_BRIDGE(dev); | 
 |     s->address_space = address_space_mem; | 
 |     b = pci_bus_new(dev, NULL, pci_address_space, | 
 |                     address_space_io, 0); | 
 |     s->bus = b; | 
 |     object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev), NULL); | 
 |     qdev_init_nofail(dev); | 
 |  | 
 |     d = pci_create_simple(b, 0, device_name); | 
 |     *pi440fx_state = DO_UPCAST(PCII440FXState, dev, d); | 
 |     f = *pi440fx_state; | 
 |     f->system_memory = address_space_mem; | 
 |     f->pci_address_space = pci_address_space; | 
 |     f->ram_memory = ram_memory; | 
 |     memory_region_init_alias(&f->pci_hole, "pci-hole", f->pci_address_space, | 
 |                              pci_hole_start, pci_hole_size); | 
 |     memory_region_add_subregion(f->system_memory, pci_hole_start, &f->pci_hole); | 
 |     memory_region_init_alias(&f->pci_hole_64bit, "pci-hole64", | 
 |                              f->pci_address_space, | 
 |                              pci_hole64_start, pci_hole64_size); | 
 |     if (pci_hole64_size) { | 
 |         memory_region_add_subregion(f->system_memory, pci_hole64_start, | 
 |                                     &f->pci_hole_64bit); | 
 |     } | 
 |     memory_region_init_alias(&f->smram_region, "smram-region", | 
 |                              f->pci_address_space, 0xa0000, 0x20000); | 
 |     memory_region_add_subregion_overlap(f->system_memory, 0xa0000, | 
 |                                         &f->smram_region, 1); | 
 |     memory_region_set_enabled(&f->smram_region, false); | 
 |  | 
 |     /* Xen supports additional interrupt routes from the PCI devices to | 
 |      * the IOAPIC: the four pins of each PCI device on the bus are also | 
 |      * connected to the IOAPIC directly. | 
 |      * These additional routes can be discovered through ACPI. */ | 
 |     if (xen_enabled()) { | 
 |         piix3 = DO_UPCAST(PIIX3State, dev, | 
 |                 pci_create_simple_multifunction(b, -1, true, "PIIX3-xen")); | 
 |         pci_bus_irqs(b, xen_piix3_set_irq, xen_pci_slot_get_pirq, | 
 |                 piix3, XEN_PIIX_NUM_PIRQS); | 
 |     } else { | 
 |         piix3 = DO_UPCAST(PIIX3State, dev, | 
 |                 pci_create_simple_multifunction(b, -1, true, "PIIX3")); | 
 |         pci_bus_irqs(b, piix3_set_irq, pci_slot_get_pirq, piix3, | 
 |                 PIIX_NUM_PIRQS); | 
 |         pci_bus_set_route_irq_fn(b, piix3_route_intx_pin_to_irq); | 
 |     } | 
 |     piix3->pic = pic; | 
 |     *isa_bus = DO_UPCAST(ISABus, qbus, | 
 |                          qdev_get_child_bus(&piix3->dev.qdev, "isa.0")); | 
 |  | 
 |     *piix3_devfn = piix3->dev.devfn; | 
 |  | 
 |     ram_size = ram_size / 8 / 1024 / 1024; | 
 |     if (ram_size > 255) | 
 |         ram_size = 255; | 
 |     (*pi440fx_state)->dev.config[0x57]=ram_size; | 
 |  | 
 |     i440fx_update_memory_mappings(f); | 
 |  | 
 |     return b; | 
 | } | 
 |  | 
 | PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int *piix3_devfn, | 
 |                     ISABus **isa_bus, qemu_irq *pic, | 
 |                     MemoryRegion *address_space_mem, | 
 |                     MemoryRegion *address_space_io, | 
 |                     ram_addr_t ram_size, | 
 |                     target_phys_addr_t pci_hole_start, | 
 |                     target_phys_addr_t pci_hole_size, | 
 |                     target_phys_addr_t pci_hole64_start, | 
 |                     target_phys_addr_t pci_hole64_size, | 
 |                     MemoryRegion *pci_memory, MemoryRegion *ram_memory) | 
 |  | 
 | { | 
 |     PCIBus *b; | 
 |  | 
 |     b = i440fx_common_init("i440FX", pi440fx_state, piix3_devfn, isa_bus, pic, | 
 |                            address_space_mem, address_space_io, ram_size, | 
 |                            pci_hole_start, pci_hole_size, | 
 |                            pci_hole64_start, pci_hole64_size, | 
 |                            pci_memory, ram_memory); | 
 |     return b; | 
 | } | 
 |  | 
 | /* PIIX3 PCI to ISA bridge */ | 
 | static void piix3_set_irq_pic(PIIX3State *piix3, int pic_irq) | 
 | { | 
 |     qemu_set_irq(piix3->pic[pic_irq], | 
 |                  !!(piix3->pic_levels & | 
 |                     (((1ULL << PIIX_NUM_PIRQS) - 1) << | 
 |                      (pic_irq * PIIX_NUM_PIRQS)))); | 
 | } | 
 |  | 
 | static void piix3_set_irq_level(PIIX3State *piix3, int pirq, int level) | 
 | { | 
 |     int pic_irq; | 
 |     uint64_t mask; | 
 |  | 
 |     pic_irq = piix3->dev.config[PIIX_PIRQC + pirq]; | 
 |     if (pic_irq >= PIIX_NUM_PIC_IRQS) { | 
 |         return; | 
 |     } | 
 |  | 
 |     mask = 1ULL << ((pic_irq * PIIX_NUM_PIRQS) + pirq); | 
 |     piix3->pic_levels &= ~mask; | 
 |     piix3->pic_levels |= mask * !!level; | 
 |  | 
 |     piix3_set_irq_pic(piix3, pic_irq); | 
 | } | 
 |  | 
 | static void piix3_set_irq(void *opaque, int pirq, int level) | 
 | { | 
 |     PIIX3State *piix3 = opaque; | 
 |     piix3_set_irq_level(piix3, pirq, level); | 
 | } | 
 |  | 
 | static PCIINTxRoute piix3_route_intx_pin_to_irq(void *opaque, int pin) | 
 | { | 
 |     PIIX3State *piix3 = opaque; | 
 |     int irq = piix3->dev.config[PIIX_PIRQC + pin]; | 
 |     PCIINTxRoute route; | 
 |  | 
 |     if (irq < PIIX_NUM_PIC_IRQS) { | 
 |         route.mode = PCI_INTX_ENABLED; | 
 |         route.irq = irq; | 
 |     } else { | 
 |         route.mode = PCI_INTX_DISABLED; | 
 |         route.irq = -1; | 
 |     } | 
 |     return route; | 
 | } | 
 |  | 
 | /* irq routing is changed. so rebuild bitmap */ | 
 | static void piix3_update_irq_levels(PIIX3State *piix3) | 
 | { | 
 |     int pirq; | 
 |  | 
 |     piix3->pic_levels = 0; | 
 |     for (pirq = 0; pirq < PIIX_NUM_PIRQS; pirq++) { | 
 |         piix3_set_irq_level(piix3, pirq, | 
 |                             pci_bus_get_irq_level(piix3->dev.bus, pirq)); | 
 |     } | 
 | } | 
 |  | 
 | static void piix3_write_config(PCIDevice *dev, | 
 |                                uint32_t address, uint32_t val, int len) | 
 | { | 
 |     pci_default_write_config(dev, address, val, len); | 
 |     if (ranges_overlap(address, len, PIIX_PIRQC, 4)) { | 
 |         PIIX3State *piix3 = DO_UPCAST(PIIX3State, dev, dev); | 
 |         int pic_irq; | 
 |  | 
 |         pci_bus_fire_intx_routing_notifier(piix3->dev.bus); | 
 |         piix3_update_irq_levels(piix3); | 
 |         for (pic_irq = 0; pic_irq < PIIX_NUM_PIC_IRQS; pic_irq++) { | 
 |             piix3_set_irq_pic(piix3, pic_irq); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | static void piix3_write_config_xen(PCIDevice *dev, | 
 |                                uint32_t address, uint32_t val, int len) | 
 | { | 
 |     xen_piix_pci_write_config_client(address, val, len); | 
 |     piix3_write_config(dev, address, val, len); | 
 | } | 
 |  | 
 | static void piix3_reset(void *opaque) | 
 | { | 
 |     PIIX3State *d = opaque; | 
 |     uint8_t *pci_conf = d->dev.config; | 
 |  | 
 |     pci_conf[0x04] = 0x07; // master, memory and I/O | 
 |     pci_conf[0x05] = 0x00; | 
 |     pci_conf[0x06] = 0x00; | 
 |     pci_conf[0x07] = 0x02; // PCI_status_devsel_medium | 
 |     pci_conf[0x4c] = 0x4d; | 
 |     pci_conf[0x4e] = 0x03; | 
 |     pci_conf[0x4f] = 0x00; | 
 |     pci_conf[0x60] = 0x80; | 
 |     pci_conf[0x61] = 0x80; | 
 |     pci_conf[0x62] = 0x80; | 
 |     pci_conf[0x63] = 0x80; | 
 |     pci_conf[0x69] = 0x02; | 
 |     pci_conf[0x70] = 0x80; | 
 |     pci_conf[0x76] = 0x0c; | 
 |     pci_conf[0x77] = 0x0c; | 
 |     pci_conf[0x78] = 0x02; | 
 |     pci_conf[0x79] = 0x00; | 
 |     pci_conf[0x80] = 0x00; | 
 |     pci_conf[0x82] = 0x00; | 
 |     pci_conf[0xa0] = 0x08; | 
 |     pci_conf[0xa2] = 0x00; | 
 |     pci_conf[0xa3] = 0x00; | 
 |     pci_conf[0xa4] = 0x00; | 
 |     pci_conf[0xa5] = 0x00; | 
 |     pci_conf[0xa6] = 0x00; | 
 |     pci_conf[0xa7] = 0x00; | 
 |     pci_conf[0xa8] = 0x0f; | 
 |     pci_conf[0xaa] = 0x00; | 
 |     pci_conf[0xab] = 0x00; | 
 |     pci_conf[0xac] = 0x00; | 
 |     pci_conf[0xae] = 0x00; | 
 |  | 
 |     d->pic_levels = 0; | 
 | } | 
 |  | 
 | static int piix3_post_load(void *opaque, int version_id) | 
 | { | 
 |     PIIX3State *piix3 = opaque; | 
 |     piix3_update_irq_levels(piix3); | 
 |     return 0; | 
 | } | 
 |  | 
 | static void piix3_pre_save(void *opaque) | 
 | { | 
 |     int i; | 
 |     PIIX3State *piix3 = opaque; | 
 |  | 
 |     for (i = 0; i < ARRAY_SIZE(piix3->pci_irq_levels_vmstate); i++) { | 
 |         piix3->pci_irq_levels_vmstate[i] = | 
 |             pci_bus_get_irq_level(piix3->dev.bus, i); | 
 |     } | 
 | } | 
 |  | 
 | static const VMStateDescription vmstate_piix3 = { | 
 |     .name = "PIIX3", | 
 |     .version_id = 3, | 
 |     .minimum_version_id = 2, | 
 |     .minimum_version_id_old = 2, | 
 |     .post_load = piix3_post_load, | 
 |     .pre_save = piix3_pre_save, | 
 |     .fields      = (VMStateField []) { | 
 |         VMSTATE_PCI_DEVICE(dev, PIIX3State), | 
 |         VMSTATE_INT32_ARRAY_V(pci_irq_levels_vmstate, PIIX3State, | 
 |                               PIIX_NUM_PIRQS, 3), | 
 |         VMSTATE_END_OF_LIST() | 
 |     } | 
 | }; | 
 |  | 
 | static int piix3_initfn(PCIDevice *dev) | 
 | { | 
 |     PIIX3State *d = DO_UPCAST(PIIX3State, dev, dev); | 
 |  | 
 |     isa_bus_new(&d->dev.qdev, pci_address_space_io(dev)); | 
 |     qemu_register_reset(piix3_reset, d); | 
 |     return 0; | 
 | } | 
 |  | 
 | static void piix3_class_init(ObjectClass *klass, void *data) | 
 | { | 
 |     DeviceClass *dc = DEVICE_CLASS(klass); | 
 |     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | 
 |  | 
 |     dc->desc        = "ISA bridge"; | 
 |     dc->vmsd        = &vmstate_piix3; | 
 |     dc->no_user     = 1, | 
 |     k->no_hotplug   = 1; | 
 |     k->init         = piix3_initfn; | 
 |     k->config_write = piix3_write_config; | 
 |     k->vendor_id    = PCI_VENDOR_ID_INTEL; | 
 |     k->device_id    = PCI_DEVICE_ID_INTEL_82371SB_0; // 82371SB PIIX3 PCI-to-ISA bridge (Step A1) | 
 |     k->class_id     = PCI_CLASS_BRIDGE_ISA; | 
 | } | 
 |  | 
 | static const TypeInfo piix3_info = { | 
 |     .name          = "PIIX3", | 
 |     .parent        = TYPE_PCI_DEVICE, | 
 |     .instance_size = sizeof(PIIX3State), | 
 |     .class_init    = piix3_class_init, | 
 | }; | 
 |  | 
 | static void piix3_xen_class_init(ObjectClass *klass, void *data) | 
 | { | 
 |     DeviceClass *dc = DEVICE_CLASS(klass); | 
 |     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | 
 |  | 
 |     dc->desc        = "ISA bridge"; | 
 |     dc->vmsd        = &vmstate_piix3; | 
 |     dc->no_user     = 1; | 
 |     k->no_hotplug   = 1; | 
 |     k->init         = piix3_initfn; | 
 |     k->config_write = piix3_write_config_xen; | 
 |     k->vendor_id    = PCI_VENDOR_ID_INTEL; | 
 |     k->device_id    = PCI_DEVICE_ID_INTEL_82371SB_0; // 82371SB PIIX3 PCI-to-ISA bridge (Step A1) | 
 |     k->class_id     = PCI_CLASS_BRIDGE_ISA; | 
 | }; | 
 |  | 
 | static const TypeInfo piix3_xen_info = { | 
 |     .name          = "PIIX3-xen", | 
 |     .parent        = TYPE_PCI_DEVICE, | 
 |     .instance_size = sizeof(PIIX3State), | 
 |     .class_init    = piix3_xen_class_init, | 
 | }; | 
 |  | 
 | static void i440fx_class_init(ObjectClass *klass, void *data) | 
 | { | 
 |     DeviceClass *dc = DEVICE_CLASS(klass); | 
 |     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | 
 |  | 
 |     k->no_hotplug = 1; | 
 |     k->init = i440fx_initfn; | 
 |     k->config_write = i440fx_write_config; | 
 |     k->vendor_id = PCI_VENDOR_ID_INTEL; | 
 |     k->device_id = PCI_DEVICE_ID_INTEL_82441; | 
 |     k->revision = 0x02; | 
 |     k->class_id = PCI_CLASS_BRIDGE_HOST; | 
 |     dc->desc = "Host bridge"; | 
 |     dc->no_user = 1; | 
 |     dc->vmsd = &vmstate_i440fx; | 
 | } | 
 |  | 
 | static const TypeInfo i440fx_info = { | 
 |     .name          = "i440FX", | 
 |     .parent        = TYPE_PCI_DEVICE, | 
 |     .instance_size = sizeof(PCII440FXState), | 
 |     .class_init    = i440fx_class_init, | 
 | }; | 
 |  | 
 | static void i440fx_pcihost_class_init(ObjectClass *klass, void *data) | 
 | { | 
 |     DeviceClass *dc = DEVICE_CLASS(klass); | 
 |     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); | 
 |  | 
 |     k->init = i440fx_pcihost_initfn; | 
 |     dc->fw_name = "pci"; | 
 |     dc->no_user = 1; | 
 | } | 
 |  | 
 | static const TypeInfo i440fx_pcihost_info = { | 
 |     .name          = "i440FX-pcihost", | 
 |     .parent        = TYPE_PCI_HOST_BRIDGE, | 
 |     .instance_size = sizeof(I440FXState), | 
 |     .class_init    = i440fx_pcihost_class_init, | 
 | }; | 
 |  | 
 | static void i440fx_register_types(void) | 
 | { | 
 |     type_register_static(&i440fx_info); | 
 |     type_register_static(&piix3_info); | 
 |     type_register_static(&piix3_xen_info); | 
 |     type_register_static(&i440fx_pcihost_info); | 
 | } | 
 |  | 
 | type_init(i440fx_register_types) |