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/*
* SuperH on-chip PCIC emulation.
*
* Copyright (c) 2008 Takashi YOSHII
*
* 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 "sysbus.h"
#include "sh.h"
#include "pci.h"
#include "pci_host.h"
#include "bswap.h"
#include "exec-memory.h"
typedef struct SHPCIState {
SysBusDevice busdev;
PCIBus *bus;
PCIDevice *dev;
qemu_irq irq[4];
int memconfig;
uint32_t par;
uint32_t mbr;
uint32_t iobr;
} SHPCIState;
static void sh_pci_reg_write (void *p, target_phys_addr_t addr, uint32_t val)
{
SHPCIState *pcic = p;
switch(addr) {
case 0 ... 0xfc:
cpu_to_le32w((uint32_t*)(pcic->dev->config + addr), val);
break;
case 0x1c0:
pcic->par = val;
break;
case 0x1c4:
pcic->mbr = val & 0xff000001;
break;
case 0x1c8:
if ((val & 0xfffc0000) != (pcic->iobr & 0xfffc0000)) {
cpu_register_physical_memory(pcic->iobr & 0xfffc0000, 0x40000,
IO_MEM_UNASSIGNED);
pcic->iobr = val & 0xfffc0001;
isa_mmio_init(pcic->iobr & 0xfffc0000, 0x40000);
}
break;
case 0x220:
pci_data_write(pcic->bus, pcic->par, val, 4);
break;
}
}
static uint32_t sh_pci_reg_read (void *p, target_phys_addr_t addr)
{
SHPCIState *pcic = p;
switch(addr) {
case 0 ... 0xfc:
return le32_to_cpup((uint32_t*)(pcic->dev->config + addr));
case 0x1c0:
return pcic->par;
case 0x1c4:
return pcic->mbr;
case 0x1c8:
return pcic->iobr;
case 0x220:
return pci_data_read(pcic->bus, pcic->par, 4);
}
return 0;
}
typedef struct {
CPUReadMemoryFunc * const r[3];
CPUWriteMemoryFunc * const w[3];
} MemOp;
static MemOp sh_pci_reg = {
{ NULL, NULL, sh_pci_reg_read },
{ NULL, NULL, sh_pci_reg_write },
};
static int sh_pci_map_irq(PCIDevice *d, int irq_num)
{
return (d->devfn >> 3);
}
static void sh_pci_set_irq(void *opaque, int irq_num, int level)
{
qemu_irq *pic = opaque;
qemu_set_irq(pic[irq_num], level);
}
static void sh_pci_map(SysBusDevice *dev, target_phys_addr_t base)
{
SHPCIState *s = FROM_SYSBUS(SHPCIState, dev);
cpu_register_physical_memory(P4ADDR(base), 0x224, s->memconfig);
cpu_register_physical_memory(A7ADDR(base), 0x224, s->memconfig);
s->iobr = 0xfe240000;
isa_mmio_init(s->iobr, 0x40000);
}
static int sh_pci_init_device(SysBusDevice *dev)
{
SHPCIState *s;
int i;
s = FROM_SYSBUS(SHPCIState, dev);
for (i = 0; i < 4; i++) {
sysbus_init_irq(dev, &s->irq[i]);
}
s->bus = pci_register_bus(&s->busdev.qdev, "pci",
sh_pci_set_irq, sh_pci_map_irq,
s->irq, get_system_memory(),
PCI_DEVFN(0, 0), 4);
s->memconfig = cpu_register_io_memory(sh_pci_reg.r, sh_pci_reg.w,
s, DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio_cb(dev, 0x224, sh_pci_map);
s->dev = pci_create_simple(s->bus, PCI_DEVFN(0, 0), "sh_pci_host");
return 0;
}
static int sh_pci_host_init(PCIDevice *d)
{
pci_set_word(d->config + PCI_COMMAND, PCI_COMMAND_WAIT);
pci_set_word(d->config + PCI_STATUS, PCI_STATUS_CAP_LIST |
PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM);
return 0;
}
static PCIDeviceInfo sh_pci_host_info = {
.qdev.name = "sh_pci_host",
.qdev.size = sizeof(PCIDevice),
.init = sh_pci_host_init,
.vendor_id = PCI_VENDOR_ID_HITACHI,
.device_id = PCI_DEVICE_ID_HITACHI_SH7751R,
};
static void sh_pci_register_devices(void)
{
sysbus_register_dev("sh_pci", sizeof(SHPCIState),
sh_pci_init_device);
pci_qdev_register(&sh_pci_host_info);
}
device_init(sh_pci_register_devices)
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