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/*
* ARM Versatile/PB PCI host controller
*
* Copyright (c) 2006-2009 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the LGPL.
*/
#include "sysbus.h"
#include "pci.h"
#include "pci_host.h"
#include "exec-memory.h"
typedef struct {
SysBusDevice busdev;
qemu_irq irq[4];
int realview;
MemoryRegion mem_config;
MemoryRegion mem_config2;
MemoryRegion isa;
} PCIVPBState;
static inline uint32_t vpb_pci_config_addr(target_phys_addr_t addr)
{
return addr & 0xffffff;
}
static void pci_vpb_config_write(void *opaque, target_phys_addr_t addr,
uint64_t val, unsigned size)
{
pci_data_write(opaque, vpb_pci_config_addr(addr), val, size);
}
static uint64_t pci_vpb_config_read(void *opaque, target_phys_addr_t addr,
unsigned size)
{
uint32_t val;
val = pci_data_read(opaque, vpb_pci_config_addr(addr), size);
return val;
}
static const MemoryRegionOps pci_vpb_config_ops = {
.read = pci_vpb_config_read,
.write = pci_vpb_config_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static int pci_vpb_map_irq(PCIDevice *d, int irq_num)
{
return irq_num;
}
static void pci_vpb_set_irq(void *opaque, int irq_num, int level)
{
qemu_irq *pic = opaque;
qemu_set_irq(pic[irq_num], level);
}
static void pci_vpb_map(SysBusDevice *dev, target_phys_addr_t base)
{
PCIVPBState *s = (PCIVPBState *)dev;
/* Selfconfig area. */
memory_region_add_subregion(get_system_memory(), base + 0x01000000,
&s->mem_config);
/* Normal config area. */
memory_region_add_subregion(get_system_memory(), base + 0x02000000,
&s->mem_config2);
if (s->realview) {
/* IO memory area. */
memory_region_add_subregion(get_system_memory(), base + 0x03000000,
&s->isa);
}
}
static void pci_vpb_unmap(SysBusDevice *dev, target_phys_addr_t base)
{
PCIVPBState *s = (PCIVPBState *)dev;
/* Selfconfig area. */
memory_region_del_subregion(get_system_memory(), &s->mem_config);
/* Normal config area. */
memory_region_del_subregion(get_system_memory(), &s->mem_config2);
if (s->realview) {
/* IO memory area. */
memory_region_del_subregion(get_system_memory(), &s->isa);
}
}
static int pci_vpb_init(SysBusDevice *dev)
{
PCIVPBState *s = FROM_SYSBUS(PCIVPBState, dev);
PCIBus *bus;
int i;
for (i = 0; i < 4; i++) {
sysbus_init_irq(dev, &s->irq[i]);
}
bus = pci_register_bus(&dev->qdev, "pci",
pci_vpb_set_irq, pci_vpb_map_irq, s->irq,
get_system_memory(), get_system_io(),
PCI_DEVFN(11, 0), 4);
/* ??? Register memory space. */
memory_region_init_io(&s->mem_config, &pci_vpb_config_ops, bus,
"pci-vpb-selfconfig", 0x1000000);
memory_region_init_io(&s->mem_config2, &pci_vpb_config_ops, bus,
"pci-vpb-config", 0x1000000);
if (s->realview) {
isa_mmio_setup(&s->isa, 0x0100000);
}
sysbus_init_mmio_cb2(dev, pci_vpb_map, pci_vpb_unmap);
pci_create_simple(bus, -1, "versatile_pci_host");
return 0;
}
static int pci_realview_init(SysBusDevice *dev)
{
PCIVPBState *s = FROM_SYSBUS(PCIVPBState, dev);
s->realview = 1;
return pci_vpb_init(dev);
}
static int versatile_pci_host_init(PCIDevice *d)
{
pci_set_word(d->config + PCI_STATUS,
PCI_STATUS_66MHZ | PCI_STATUS_DEVSEL_MEDIUM);
pci_set_byte(d->config + PCI_LATENCY_TIMER, 0x10);
return 0;
}
static PCIDeviceInfo versatile_pci_host_info = {
.qdev.name = "versatile_pci_host",
.qdev.size = sizeof(PCIDevice),
.init = versatile_pci_host_init,
.vendor_id = PCI_VENDOR_ID_XILINX,
/* Both boards have the same device ID. Oh well. */
.device_id = PCI_DEVICE_ID_XILINX_XC2VP30,
.class_id = PCI_CLASS_PROCESSOR_CO,
};
static void versatile_pci_register_devices(void)
{
sysbus_register_dev("versatile_pci", sizeof(PCIVPBState), pci_vpb_init);
sysbus_register_dev("realview_pci", sizeof(PCIVPBState),
pci_realview_init);
pci_qdev_register(&versatile_pci_host_info);
}
device_init(versatile_pci_register_devices)
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