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qemu/hw/unin_pci.c
Avi Kivity aee97b840f pci: pass I/O address space to new PCI bus 
This lets us register BARs in the I/O address space.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-08 10:15:53 -05:00

380 lines
12 KiB
C
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/*
* QEMU Uninorth PCI host (for all Mac99 and newer machines)
*
* 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 "ppc_mac.h"
#include "pci.h"
#include "pci_host.h"
/* debug UniNorth */
//#define DEBUG_UNIN
#ifdef DEBUG_UNIN
#define UNIN_DPRINTF(fmt, ...) \
do { printf("UNIN: " fmt , ## __VA_ARGS__); } while (0)
#else
#define UNIN_DPRINTF(fmt, ...)
#endif
static const int unin_irq_line[] = { 0x1b, 0x1c, 0x1d, 0x1e };
typedef struct UNINState {
SysBusDevice busdev;
PCIHostState host_state;
ReadWriteHandler data_handler;
} UNINState;
static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
{
int retval;
int devfn = pci_dev->devfn & 0x00FFFFFF;
retval = (((devfn >> 11) & 0x1F) + irq_num) & 3;
return retval;
}
static void pci_unin_set_irq(void *opaque, int irq_num, int level)
{
qemu_irq *pic = opaque;
UNIN_DPRINTF("%s: setting INT %d = %d\n", __func__,
unin_irq_line[irq_num], level);
qemu_set_irq(pic[unin_irq_line[irq_num]], level);
}
static void pci_unin_reset(void *opaque)
{
}
static uint32_t unin_get_config_reg(uint32_t reg, uint32_t addr)
{
uint32_t retval;
if (reg & (1u << 31)) {
/* XXX OpenBIOS compatibility hack */
retval = reg | (addr & 3);
} else if (reg & 1) {
/* CFA1 style */
retval = (reg & ~7u) | (addr & 7);
} else {
uint32_t slot, func;
/* Grab CFA0 style values */
slot = ffs(reg & 0xfffff800) - 1;
func = (reg >> 8) & 7;
/* ... and then convert them to x86 format */
/* config pointer */
retval = (reg & (0xff - 7)) | (addr & 7);
/* slot */
retval |= slot << 11;
/* fn */
retval |= func << 8;
}
UNIN_DPRINTF("Converted config space accessor %08x/%08x -> %08x\n",
reg, addr, retval);
return retval;
}
static void unin_data_write(ReadWriteHandler *handler,
pcibus_t addr, uint32_t val, int len)
{
UNINState *s = container_of(handler, UNINState, data_handler);
UNIN_DPRINTF("write addr %" FMT_PCIBUS " len %d val %x\n", addr, len, val);
pci_data_write(s->host_state.bus,
unin_get_config_reg(s->host_state.config_reg, addr),
val, len);
}
static uint32_t unin_data_read(ReadWriteHandler *handler,
pcibus_t addr, int len)
{
UNINState *s = container_of(handler, UNINState, data_handler);
uint32_t val;
val = pci_data_read(s->host_state.bus,
unin_get_config_reg(s->host_state.config_reg, addr),
len);
UNIN_DPRINTF("read addr %" FMT_PCIBUS " len %d val %x\n", addr, len, val);
return val;
}
static int pci_unin_main_init_device(SysBusDevice *dev)
{
UNINState *s;
int pci_mem_config, pci_mem_data;
/* Use values found on a real PowerMac */
/* Uninorth main bus */
s = FROM_SYSBUS(UNINState, dev);
pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
DEVICE_LITTLE_ENDIAN);
s->data_handler.read = unin_data_read;
s->data_handler.write = unin_data_write;
pci_mem_data = cpu_register_io_memory_simple(&s->data_handler,
DEVICE_LITTLE_ENDIAN);
sysbus_init_mmio(dev, 0x1000, pci_mem_config);
sysbus_init_mmio(dev, 0x1000, pci_mem_data);
qemu_register_reset(pci_unin_reset, &s->host_state);
return 0;
}
static int pci_u3_agp_init_device(SysBusDevice *dev)
{
UNINState *s;
int pci_mem_config, pci_mem_data;
/* Uninorth U3 AGP bus */
s = FROM_SYSBUS(UNINState, dev);
pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
DEVICE_LITTLE_ENDIAN);
s->data_handler.read = unin_data_read;
s->data_handler.write = unin_data_write;
pci_mem_data = cpu_register_io_memory_simple(&s->data_handler,
DEVICE_LITTLE_ENDIAN);
sysbus_init_mmio(dev, 0x1000, pci_mem_config);
sysbus_init_mmio(dev, 0x1000, pci_mem_data);
qemu_register_reset(pci_unin_reset, &s->host_state);
return 0;
}
static int pci_unin_agp_init_device(SysBusDevice *dev)
{
UNINState *s;
int pci_mem_config, pci_mem_data;
/* Uninorth AGP bus */
s = FROM_SYSBUS(UNINState, dev);
pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
DEVICE_LITTLE_ENDIAN);
pci_mem_data = pci_host_data_register_mmio(&s->host_state,
DEVICE_LITTLE_ENDIAN);
sysbus_init_mmio(dev, 0x1000, pci_mem_config);
sysbus_init_mmio(dev, 0x1000, pci_mem_data);
return 0;
}
static int pci_unin_internal_init_device(SysBusDevice *dev)
{
UNINState *s;
int pci_mem_config, pci_mem_data;
/* Uninorth internal bus */
s = FROM_SYSBUS(UNINState, dev);
pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
DEVICE_LITTLE_ENDIAN);
pci_mem_data = pci_host_data_register_mmio(&s->host_state,
DEVICE_LITTLE_ENDIAN);
sysbus_init_mmio(dev, 0x1000, pci_mem_config);
sysbus_init_mmio(dev, 0x1000, pci_mem_data);
return 0;
}
PCIBus *pci_pmac_init(qemu_irq *pic,
MemoryRegion *address_space_mem,
MemoryRegion *address_space_io)
{
DeviceState *dev;
SysBusDevice *s;
UNINState *d;
/* Use values found on a real PowerMac */
/* Uninorth main bus */
dev = qdev_create(NULL, "uni-north");
qdev_init_nofail(dev);
s = sysbus_from_qdev(dev);
d = FROM_SYSBUS(UNINState, s);
d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
pci_unin_set_irq, pci_unin_map_irq,
pic,
address_space_mem,
address_space_io,
PCI_DEVFN(11, 0), 4);
#if 0
pci_create_simple(d->host_state.bus, PCI_DEVFN(11, 0), "uni-north");
#endif
sysbus_mmio_map(s, 0, 0xf2800000);
sysbus_mmio_map(s, 1, 0xf2c00000);
/* DEC 21154 bridge */
#if 0
/* XXX: not activated as PPC BIOS doesn't handle multiple buses properly */
pci_create_simple(d->host_state.bus, PCI_DEVFN(12, 0), "dec-21154");
#endif
/* Uninorth AGP bus */
pci_create_simple(d->host_state.bus, PCI_DEVFN(11, 0), "uni-north-agp");
dev = qdev_create(NULL, "uni-north-agp");
qdev_init_nofail(dev);
s = sysbus_from_qdev(dev);
sysbus_mmio_map(s, 0, 0xf0800000);
sysbus_mmio_map(s, 1, 0xf0c00000);
/* Uninorth internal bus */
#if 0
/* XXX: not needed for now */
pci_create_simple(d->host_state.bus, PCI_DEVFN(14, 0), "uni-north-pci");
dev = qdev_create(NULL, "uni-north-pci");
qdev_init_nofail(dev);
s = sysbus_from_qdev(dev);
sysbus_mmio_map(s, 0, 0xf4800000);
sysbus_mmio_map(s, 1, 0xf4c00000);
#endif
return d->host_state.bus;
}
PCIBus *pci_pmac_u3_init(qemu_irq *pic,
MemoryRegion *address_space_mem,
MemoryRegion *address_space_io)
{
DeviceState *dev;
SysBusDevice *s;
UNINState *d;
/* Uninorth AGP bus */
dev = qdev_create(NULL, "u3-agp");
qdev_init_nofail(dev);
s = sysbus_from_qdev(dev);
d = FROM_SYSBUS(UNINState, s);
d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
pci_unin_set_irq, pci_unin_map_irq,
pic,
address_space_mem,
address_space_io,
PCI_DEVFN(11, 0), 4);
sysbus_mmio_map(s, 0, 0xf0800000);
sysbus_mmio_map(s, 1, 0xf0c00000);
pci_create_simple(d->host_state.bus, 11 << 3, "u3-agp");
return d->host_state.bus;
}
static int unin_main_pci_host_init(PCIDevice *d)
{
d->config[0x0C] = 0x08; // cache_line_size
d->config[0x0D] = 0x10; // latency_timer
d->config[0x34] = 0x00; // capabilities_pointer
return 0;
}
static int unin_agp_pci_host_init(PCIDevice *d)
{
d->config[0x0C] = 0x08; // cache_line_size
d->config[0x0D] = 0x10; // latency_timer
// d->config[0x34] = 0x80; // capabilities_pointer
return 0;
}
static int u3_agp_pci_host_init(PCIDevice *d)
{
/* cache line size */
d->config[0x0C] = 0x08;
/* latency timer */
d->config[0x0D] = 0x10;
return 0;
}
static int unin_internal_pci_host_init(PCIDevice *d)
{
d->config[0x0C] = 0x08; // cache_line_size
d->config[0x0D] = 0x10; // latency_timer
d->config[0x34] = 0x00; // capabilities_pointer
return 0;
}
static PCIDeviceInfo unin_main_pci_host_info = {
.qdev.name = "uni-north",
.qdev.size = sizeof(PCIDevice),
.init = unin_main_pci_host_init,
.vendor_id = PCI_VENDOR_ID_APPLE,
.device_id = PCI_DEVICE_ID_APPLE_UNI_N_PCI,
.revision = 0x00,
.class_id = PCI_CLASS_BRIDGE_HOST,
};
static PCIDeviceInfo u3_agp_pci_host_info = {
.qdev.name = "u3-agp",
.qdev.size = sizeof(PCIDevice),
.init = u3_agp_pci_host_init,
.vendor_id = PCI_VENDOR_ID_APPLE,
.device_id = PCI_DEVICE_ID_APPLE_U3_AGP,
.revision = 0x00,
.class_id = PCI_CLASS_BRIDGE_HOST,
};
static PCIDeviceInfo unin_agp_pci_host_info = {
.qdev.name = "uni-north-agp",
.qdev.size = sizeof(PCIDevice),
.init = unin_agp_pci_host_init,
.vendor_id = PCI_VENDOR_ID_APPLE,
.device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP,
.revision = 0x00,
.class_id = PCI_CLASS_BRIDGE_HOST,
};
static PCIDeviceInfo unin_internal_pci_host_info = {
.qdev.name = "uni-north-pci",
.qdev.size = sizeof(PCIDevice),
.init = unin_internal_pci_host_init,
.vendor_id = PCI_VENDOR_ID_APPLE,
.device_id = PCI_DEVICE_ID_APPLE_UNI_N_I_PCI,
.revision = 0x00,
.class_id = PCI_CLASS_BRIDGE_HOST,
};
static void unin_register_devices(void)
{
sysbus_register_dev("uni-north", sizeof(UNINState),
pci_unin_main_init_device);
pci_qdev_register(&unin_main_pci_host_info);
sysbus_register_dev("u3-agp", sizeof(UNINState),
pci_u3_agp_init_device);
pci_qdev_register(&u3_agp_pci_host_info);
sysbus_register_dev("uni-north-agp", sizeof(UNINState),
pci_unin_agp_init_device);
pci_qdev_register(&unin_agp_pci_host_info);
sysbus_register_dev("uni-north-pci", sizeof(UNINState),
pci_unin_internal_init_device);
pci_qdev_register(&unin_internal_pci_host_info);
}
device_init(unin_register_devices)
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