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/*
* ARM Versatile/PB PCI host controller
*
* Copyright (c) 2006-2009 CodeSourcery.
* Written by Paul Brook
*
* This code is licenced under the LGPL.
*/
#include "sysbus.h"
#include "pci.h"
#include "pci_host.h"
typedef struct {
SysBusDevice busdev;
qemu_irq irq[4];
int realview;
int mem_config;
} PCIVPBState;
static inline uint32_t vpb_pci_config_addr(target_phys_addr_t addr)
{
return addr & 0xffffff;
}
static void pci_vpb_config_writeb (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
pci_data_write(opaque, vpb_pci_config_addr (addr), val, 1);
}
static void pci_vpb_config_writew (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
#ifdef TARGET_WORDS_BIGENDIAN
val = bswap16(val);
#endif
pci_data_write(opaque, vpb_pci_config_addr (addr), val, 2);
}
static void pci_vpb_config_writel (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
#ifdef TARGET_WORDS_BIGENDIAN
val = bswap32(val);
#endif
pci_data_write(opaque, vpb_pci_config_addr (addr), val, 4);
}
static uint32_t pci_vpb_config_readb (void *opaque, target_phys_addr_t addr)
{
uint32_t val;
val = pci_data_read(opaque, vpb_pci_config_addr (addr), 1);
return val;
}
static uint32_t pci_vpb_config_readw (void *opaque, target_phys_addr_t addr)
{
uint32_t val;
val = pci_data_read(opaque, vpb_pci_config_addr (addr), 2);
#ifdef TARGET_WORDS_BIGENDIAN
val = bswap16(val);
#endif
return val;
}
static uint32_t pci_vpb_config_readl (void *opaque, target_phys_addr_t addr)
{
uint32_t val;
val = pci_data_read(opaque, vpb_pci_config_addr (addr), 4);
#ifdef TARGET_WORDS_BIGENDIAN
val = bswap32(val);
#endif
return val;
}
static CPUWriteMemoryFunc * const pci_vpb_config_write[] = {
&pci_vpb_config_writeb,
&pci_vpb_config_writew,
&pci_vpb_config_writel,
};
static CPUReadMemoryFunc * const pci_vpb_config_read[] = {
&pci_vpb_config_readb,
&pci_vpb_config_readw,
&pci_vpb_config_readl,
};
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. */
cpu_register_physical_memory(base + 0x01000000, 0x1000000, s->mem_config);
/* Normal config area. */
cpu_register_physical_memory(base + 0x02000000, 0x1000000, s->mem_config);
if (s->realview) {
/* IO memory area. */
isa_mmio_init(base + 0x03000000, 0x00100000);
}
}
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,
11 << 3, 4);
/* ??? Register memory space. */
s->mem_config = cpu_register_io_memory(pci_vpb_config_read,
pci_vpb_config_write, bus);
sysbus_init_mmio_cb(dev, 0x04000000, pci_vpb_map);
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_config_set_vendor_id(d->config, PCI_VENDOR_ID_XILINX);
/* Both boards have the same device ID. Oh well. */
pci_config_set_device_id(d->config, PCI_DEVICE_ID_XILINX_XC2VP30);
d->config[0x04] = 0x00;
d->config[0x05] = 0x00;
d->config[0x06] = 0x20;
d->config[0x07] = 0x02;
d->config[0x08] = 0x00; // revision
d->config[0x09] = 0x00; // programming i/f
pci_config_set_class(d->config, PCI_CLASS_PROCESSOR_CO);
d->config[0x0D] = 0x10; // latency_timer
return 0;
}
static PCIDeviceInfo versatile_pci_host_info = {
.qdev.name = "versatile_pci_host",
.qdev.size = sizeof(PCIDevice),
.init = versatile_pci_host_init,
};
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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