diff options
Diffstat (limited to 'hw/pci-host/piix.c')
| -rw-r--r-- | hw/pci-host/piix.c | 402 |
1 files changed, 0 insertions, 402 deletions
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c index 1544c4726b..79ecd58a2b 100644 --- a/hw/pci-host/piix.c +++ b/hw/pci-host/piix.c @@ -24,22 +24,15 @@ #include "qemu/osdep.h" #include "hw/i386/pc.h" -#include "hw/irq.h" #include "hw/pci/pci.h" #include "hw/pci/pci_host.h" #include "hw/pci-host/i440fx.h" #include "hw/southbridge/piix.h" #include "hw/qdev-properties.h" -#include "hw/isa/isa.h" #include "hw/sysbus.h" #include "qapi/error.h" -#include "qemu/range.h" -#include "hw/xen/xen.h" #include "migration/vmstate.h" #include "hw/pci-host/pam.h" -#include "sysemu/reset.h" -#include "sysemu/runstate.h" -#include "hw/i386/ioapic.h" #include "qapi/visitor.h" #include "qemu/error-report.h" @@ -59,49 +52,9 @@ typedef struct I440FXState { uint32_t short_root_bus; } I440FXState; -#define PIIX_NUM_PIC_IRQS 16 /* i8259 * 2 */ -#define PIIX_NUM_PIRQS 4ULL /* PIRQ[A-D] */ -#define XEN_PIIX_NUM_PIRQS 128ULL - -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]; - - /* Reset Control Register contents */ - uint8_t rcr; - - /* IO memory region for Reset Control Register (PIIX_RCR_IOPORT) */ - MemoryRegion rcr_mem; -} PIIX3State; - -#define TYPE_PIIX3_PCI_DEVICE "pci-piix3" -#define PIIX3_PCI_DEVICE(obj) \ - OBJECT_CHECK(PIIX3State, (obj), TYPE_PIIX3_PCI_DEVICE) - #define I440FX_PCI_DEVICE(obj) \ OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_PCI_DEVICE) -#define TYPE_PIIX3_DEVICE "PIIX3" -#define TYPE_PIIX3_XEN_DEVICE "PIIX3-xen" - struct PCII440FXState { /*< private >*/ PCIDevice parent_obj; @@ -128,22 +81,6 @@ struct PCII440FXState { */ #define I440FX_COREBOOT_RAM_SIZE 0x57 -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 i440fx_update_memory_mappings(PCII440FXState *d) { int i; @@ -333,36 +270,6 @@ static void i440fx_realize(PCIDevice *dev, Error **errp) } } -static PIIX3State *piix3_create(PCIBus *pci_bus, ISABus **isa_bus) -{ - PIIX3State *piix3; - PCIDevice *pci_dev; - - /* - * 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()) { - pci_dev = pci_create_simple_multifunction(pci_bus, -1, true, - TYPE_PIIX3_XEN_DEVICE); - piix3 = PIIX3_PCI_DEVICE(pci_dev); - pci_bus_irqs(pci_bus, xen_piix3_set_irq, xen_pci_slot_get_pirq, - piix3, XEN_PIIX_NUM_PIRQS); - } else { - pci_dev = pci_create_simple_multifunction(pci_bus, -1, true, - TYPE_PIIX3_DEVICE); - piix3 = PIIX3_PCI_DEVICE(pci_dev); - pci_bus_irqs(pci_bus, piix3_set_irq, pci_slot_get_pirq, - piix3, PIIX_NUM_PIRQS); - pci_bus_set_route_irq_fn(pci_bus, piix3_route_intx_pin_to_irq); - } - *isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(piix3), "isa.0")); - - return piix3; -} - PCIBus *i440fx_init(const char *host_type, const char *pci_type, PCII440FXState **pi440fx_state, int *piix3_devfn, @@ -455,312 +362,6 @@ PCIBus *find_i440fx(void) return s ? s->bus : NULL; } -/* 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_internal(PIIX3State *piix3, int pirq, int level) -{ - int pic_irq; - uint64_t mask; - - pic_irq = piix3->dev.config[PIIX_PIRQCA + 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; -} - -static void piix3_set_irq_level(PIIX3State *piix3, int pirq, int level) -{ - int pic_irq; - - pic_irq = piix3->dev.config[PIIX_PIRQCA + pirq]; - if (pic_irq >= PIIX_NUM_PIC_IRQS) { - return; - } - - piix3_set_irq_level_internal(piix3, pirq, 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_PIRQCA + 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) -{ - PCIBus *bus = pci_get_bus(&piix3->dev); - 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(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_PIRQCA, 4)) { - PIIX3State *piix3 = PIIX3_PCI_DEVICE(dev); - int pic_irq; - - pci_bus_fire_intx_routing_notifier(pci_get_bus(&piix3->dev)); - 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; - d->rcr = 0; -} - -static int piix3_post_load(void *opaque, int version_id) -{ - PIIX3State *piix3 = opaque; - int pirq; - - /* Because the i8259 has not been deserialized yet, qemu_irq_raise - * might bring the system to a different state than the saved one; - * for example, the interrupt could be masked but the i8259 would - * not know that yet and would trigger an interrupt in the CPU. - * - * Here, we update irq levels without raising the interrupt. - * Interrupt state will be deserialized separately through the i8259. - */ - piix3->pic_levels = 0; - for (pirq = 0; pirq < PIIX_NUM_PIRQS; pirq++) { - piix3_set_irq_level_internal(piix3, pirq, - pci_bus_get_irq_level(pci_get_bus(&piix3->dev), pirq)); - } - return 0; -} - -static int 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(pci_get_bus(&piix3->dev), i); - } - - return 0; -} - -static bool piix3_rcr_needed(void *opaque) -{ - PIIX3State *piix3 = opaque; - - return (piix3->rcr != 0); -} - -static const VMStateDescription vmstate_piix3_rcr = { - .name = "PIIX3/rcr", - .version_id = 1, - .minimum_version_id = 1, - .needed = piix3_rcr_needed, - .fields = (VMStateField[]) { - VMSTATE_UINT8(rcr, PIIX3State), - VMSTATE_END_OF_LIST() - } -}; - -static const VMStateDescription vmstate_piix3 = { - .name = "PIIX3", - .version_id = 3, - .minimum_version_id = 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() - }, - .subsections = (const VMStateDescription*[]) { - &vmstate_piix3_rcr, - NULL - } -}; - - -static void rcr_write(void *opaque, hwaddr addr, uint64_t val, unsigned len) -{ - PIIX3State *d = opaque; - - if (val & 4) { - qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); - return; - } - d->rcr = val & 2; /* keep System Reset type only */ -} - -static uint64_t rcr_read(void *opaque, hwaddr addr, unsigned len) -{ - PIIX3State *d = opaque; - - return d->rcr; -} - -static const MemoryRegionOps rcr_ops = { - .read = rcr_read, - .write = rcr_write, - .endianness = DEVICE_LITTLE_ENDIAN -}; - -static void piix3_realize(PCIDevice *dev, Error **errp) -{ - PIIX3State *d = PIIX3_PCI_DEVICE(dev); - - if (!isa_bus_new(DEVICE(d), get_system_memory(), - pci_address_space_io(dev), errp)) { - return; - } - - memory_region_init_io(&d->rcr_mem, OBJECT(dev), &rcr_ops, d, - "piix3-reset-control", 1); - memory_region_add_subregion_overlap(pci_address_space_io(dev), - PIIX_RCR_IOPORT, &d->rcr_mem, 1); - - qemu_register_reset(piix3_reset, d); -} - -static void pci_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->hotpluggable = false; - k->realize = piix3_realize; - k->vendor_id = PCI_VENDOR_ID_INTEL; - /* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */ - k->device_id = PCI_DEVICE_ID_INTEL_82371SB_0; - k->class_id = PCI_CLASS_BRIDGE_ISA; - /* - * Reason: part of PIIX3 southbridge, needs to be wired up by - * pc_piix.c's pc_init1() - */ - dc->user_creatable = false; -} - -static const TypeInfo piix3_pci_type_info = { - .name = TYPE_PIIX3_PCI_DEVICE, - .parent = TYPE_PCI_DEVICE, - .instance_size = sizeof(PIIX3State), - .abstract = true, - .class_init = pci_piix3_class_init, - .interfaces = (InterfaceInfo[]) { - { INTERFACE_CONVENTIONAL_PCI_DEVICE }, - { }, - }, -}; - -static void piix3_class_init(ObjectClass *klass, void *data) -{ - PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - - k->config_write = piix3_write_config; -} - -static const TypeInfo piix3_info = { - .name = TYPE_PIIX3_DEVICE, - .parent = TYPE_PIIX3_PCI_DEVICE, - .class_init = piix3_class_init, -}; - -static void piix3_xen_class_init(ObjectClass *klass, void *data) -{ - PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - - k->config_write = piix3_write_config_xen; -}; - -static const TypeInfo piix3_xen_info = { - .name = TYPE_PIIX3_XEN_DEVICE, - .parent = TYPE_PIIX3_PCI_DEVICE, - .class_init = piix3_xen_class_init, -}; - static void i440fx_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -922,9 +523,6 @@ static void i440fx_register_types(void) { type_register_static(&i440fx_info); type_register_static(&igd_passthrough_i440fx_info); - type_register_static(&piix3_pci_type_info); - type_register_static(&piix3_info); - type_register_static(&piix3_xen_info); type_register_static(&i440fx_pcihost_info); } |