hw/pci-host/piix: Extract PIIX3 functions to hw/isa/piix3.c

Move all the PIIX3 functions to a new file: hw/isa/piix3.c.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

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);
 }