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/*
* QEMU PREP PCI host
*
* 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 "pci.h"
#include "pci_host.h"
#include "prep_pci.h"
typedef PCIHostState PREPPCIState;
static inline uint32_t PPC_PCIIO_config(target_phys_addr_t addr)
{
int i;
for(i = 0; i < 11; i++) {
if ((addr & (1 << (11 + i))) != 0)
break;
}
return (addr & 0x7ff) | (i << 11);
}
static void PPC_PCIIO_writeb (void *opaque, target_phys_addr_t addr, uint32_t val)
{
PREPPCIState *s = opaque;
pci_data_write(s->bus, PPC_PCIIO_config(addr), val, 1);
}
static void PPC_PCIIO_writew (void *opaque, target_phys_addr_t addr, uint32_t val)
{
PREPPCIState *s = opaque;
val = bswap16(val);
pci_data_write(s->bus, PPC_PCIIO_config(addr), val, 2);
}
static void PPC_PCIIO_writel (void *opaque, target_phys_addr_t addr, uint32_t val)
{
PREPPCIState *s = opaque;
val = bswap32(val);
pci_data_write(s->bus, PPC_PCIIO_config(addr), val, 4);
}
static uint32_t PPC_PCIIO_readb (void *opaque, target_phys_addr_t addr)
{
PREPPCIState *s = opaque;
uint32_t val;
val = pci_data_read(s->bus, PPC_PCIIO_config(addr), 1);
return val;
}
static uint32_t PPC_PCIIO_readw (void *opaque, target_phys_addr_t addr)
{
PREPPCIState *s = opaque;
uint32_t val;
val = pci_data_read(s->bus, PPC_PCIIO_config(addr), 2);
val = bswap16(val);
return val;
}
static uint32_t PPC_PCIIO_readl (void *opaque, target_phys_addr_t addr)
{
PREPPCIState *s = opaque;
uint32_t val;
val = pci_data_read(s->bus, PPC_PCIIO_config(addr), 4);
val = bswap32(val);
return val;
}
static CPUWriteMemoryFunc * const PPC_PCIIO_write[] = {
&PPC_PCIIO_writeb,
&PPC_PCIIO_writew,
&PPC_PCIIO_writel,
};
static CPUReadMemoryFunc * const PPC_PCIIO_read[] = {
&PPC_PCIIO_readb,
&PPC_PCIIO_readw,
&PPC_PCIIO_readl,
};
static int prep_map_irq(PCIDevice *pci_dev, int irq_num)
{
return (irq_num + (pci_dev->devfn >> 3)) & 1;
}
static void prep_set_irq(void *opaque, int irq_num, int level)
{
qemu_irq *pic = opaque;
qemu_set_irq(pic[(irq_num & 1) ? 11 : 9] , level);
}
PCIBus *pci_prep_init(qemu_irq *pic,
MemoryRegion *address_space_mem,
MemoryRegion *address_space_io)
{
PREPPCIState *s;
PCIDevice *d;
int PPC_io_memory;
s = g_malloc0(sizeof(PREPPCIState));
s->bus = pci_register_bus(NULL, "pci",
prep_set_irq, prep_map_irq, pic,
address_space_mem,
address_space_io,
0, 4);
memory_region_init_io(&s->conf_mem, &pci_host_conf_be_ops, s,
"pci-conf-idx", 1);
memory_region_add_subregion(address_space_io, 0xcf8, &s->conf_mem);
sysbus_init_ioports(&s->busdev, 0xcf8, 1);
memory_region_init_io(&s->conf_mem, &pci_host_data_be_ops, s,
"pci-conf-data", 1);
memory_region_add_subregion(address_space_io, 0xcfc, &s->data_mem);
sysbus_init_ioports(&s->busdev, 0xcfc, 1);
PPC_io_memory = cpu_register_io_memory(PPC_PCIIO_read,
PPC_PCIIO_write, s,
DEVICE_NATIVE_ENDIAN);
cpu_register_physical_memory(0x80800000, 0x00400000, PPC_io_memory);
/* PCI host bridge */
d = pci_register_device(s->bus, "PREP Host Bridge - Motorola Raven",
sizeof(PCIDevice), 0, NULL, NULL);
pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_MOTOROLA);
pci_config_set_device_id(d->config, PCI_DEVICE_ID_MOTOROLA_RAVEN);
d->config[0x08] = 0x00; // revision
pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
d->config[0x0C] = 0x08; // cache_line_size
d->config[0x0D] = 0x10; // latency_timer
d->config[0x34] = 0x00; // capabilities_pointer
return s->bus;
}
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