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qemu-e2k/hw/ppce500_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

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/*
* QEMU PowerPC E500 embedded processors pci controller emulation
*
* Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: Yu Liu, <yu.liu@freescale.com>
*
* This file is derived from hw/ppc4xx_pci.c,
* the copyright for that material belongs to the original owners.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include "hw.h"
#include "pci.h"
#include "pci_host.h"
#include "bswap.h"
#ifdef DEBUG_PCI
#define pci_debug(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
#else
#define pci_debug(fmt, ...)
#endif
#define PCIE500_CFGADDR 0x0
#define PCIE500_CFGDATA 0x4
#define PCIE500_REG_BASE 0xC00
#define PCIE500_ALL_SIZE 0x1000
#define PCIE500_REG_SIZE (PCIE500_ALL_SIZE - PCIE500_REG_BASE)
#define PPCE500_PCI_CONFIG_ADDR 0x0
#define PPCE500_PCI_CONFIG_DATA 0x4
#define PPCE500_PCI_INTACK 0x8
#define PPCE500_PCI_OW1 (0xC20 - PCIE500_REG_BASE)
#define PPCE500_PCI_OW2 (0xC40 - PCIE500_REG_BASE)
#define PPCE500_PCI_OW3 (0xC60 - PCIE500_REG_BASE)
#define PPCE500_PCI_OW4 (0xC80 - PCIE500_REG_BASE)
#define PPCE500_PCI_IW3 (0xDA0 - PCIE500_REG_BASE)
#define PPCE500_PCI_IW2 (0xDC0 - PCIE500_REG_BASE)
#define PPCE500_PCI_IW1 (0xDE0 - PCIE500_REG_BASE)
#define PPCE500_PCI_GASKET_TIMR (0xE20 - PCIE500_REG_BASE)
#define PCI_POTAR 0x0
#define PCI_POTEAR 0x4
#define PCI_POWBAR 0x8
#define PCI_POWAR 0x10
#define PCI_PITAR 0x0
#define PCI_PIWBAR 0x8
#define PCI_PIWBEAR 0xC
#define PCI_PIWAR 0x10
#define PPCE500_PCI_NR_POBS 5
#define PPCE500_PCI_NR_PIBS 3
struct pci_outbound {
uint32_t potar;
uint32_t potear;
uint32_t powbar;
uint32_t powar;
};
struct pci_inbound {
uint32_t pitar;
uint32_t piwbar;
uint32_t piwbear;
uint32_t piwar;
};
struct PPCE500PCIState {
PCIHostState pci_state;
struct pci_outbound pob[PPCE500_PCI_NR_POBS];
struct pci_inbound pib[PPCE500_PCI_NR_PIBS];
uint32_t gasket_time;
qemu_irq irq[4];
/* mmio maps */
int cfgaddr;
int cfgdata;
int reg;
};
typedef struct PPCE500PCIState PPCE500PCIState;
static uint32_t pci_reg_read4(void *opaque, target_phys_addr_t addr)
{
PPCE500PCIState *pci = opaque;
unsigned long win;
uint32_t value = 0;
win = addr & 0xfe0;
switch (win) {
case PPCE500_PCI_OW1:
case PPCE500_PCI_OW2:
case PPCE500_PCI_OW3:
case PPCE500_PCI_OW4:
switch (addr & 0xC) {
case PCI_POTAR: value = pci->pob[(addr >> 5) & 0x7].potar; break;
case PCI_POTEAR: value = pci->pob[(addr >> 5) & 0x7].potear; break;
case PCI_POWBAR: value = pci->pob[(addr >> 5) & 0x7].powbar; break;
case PCI_POWAR: value = pci->pob[(addr >> 5) & 0x7].powar; break;
default: break;
}
break;
case PPCE500_PCI_IW3:
case PPCE500_PCI_IW2:
case PPCE500_PCI_IW1:
switch (addr & 0xC) {
case PCI_PITAR: value = pci->pib[(addr >> 5) & 0x3].pitar; break;
case PCI_PIWBAR: value = pci->pib[(addr >> 5) & 0x3].piwbar; break;
case PCI_PIWBEAR: value = pci->pib[(addr >> 5) & 0x3].piwbear; break;
case PCI_PIWAR: value = pci->pib[(addr >> 5) & 0x3].piwar; break;
default: break;
};
break;
case PPCE500_PCI_GASKET_TIMR:
value = pci->gasket_time;
break;
default:
break;
}
pci_debug("%s: win:%lx(addr:" TARGET_FMT_plx ") -> value:%x\n", __func__,
win, addr, value);
return value;
}
static CPUReadMemoryFunc * const e500_pci_reg_read[] = {
&pci_reg_read4,
&pci_reg_read4,
&pci_reg_read4,
};
static void pci_reg_write4(void *opaque, target_phys_addr_t addr,
uint32_t value)
{
PPCE500PCIState *pci = opaque;
unsigned long win;
win = addr & 0xfe0;
pci_debug("%s: value:%x -> win:%lx(addr:" TARGET_FMT_plx ")\n",
__func__, value, win, addr);
switch (win) {
case PPCE500_PCI_OW1:
case PPCE500_PCI_OW2:
case PPCE500_PCI_OW3:
case PPCE500_PCI_OW4:
switch (addr & 0xC) {
case PCI_POTAR: pci->pob[(addr >> 5) & 0x7].potar = value; break;
case PCI_POTEAR: pci->pob[(addr >> 5) & 0x7].potear = value; break;
case PCI_POWBAR: pci->pob[(addr >> 5) & 0x7].powbar = value; break;
case PCI_POWAR: pci->pob[(addr >> 5) & 0x7].powar = value; break;
default: break;
};
break;
case PPCE500_PCI_IW3:
case PPCE500_PCI_IW2:
case PPCE500_PCI_IW1:
switch (addr & 0xC) {
case PCI_PITAR: pci->pib[(addr >> 5) & 0x3].pitar = value; break;
case PCI_PIWBAR: pci->pib[(addr >> 5) & 0x3].piwbar = value; break;
case PCI_PIWBEAR: pci->pib[(addr >> 5) & 0x3].piwbear = value; break;
case PCI_PIWAR: pci->pib[(addr >> 5) & 0x3].piwar = value; break;
default: break;
};
break;
case PPCE500_PCI_GASKET_TIMR:
pci->gasket_time = value;
break;
default:
break;
};
}
static CPUWriteMemoryFunc * const e500_pci_reg_write[] = {
&pci_reg_write4,
&pci_reg_write4,
&pci_reg_write4,
};
static int mpc85xx_pci_map_irq(PCIDevice *pci_dev, int irq_num)
{
int devno = pci_dev->devfn >> 3, ret = 0;
switch (devno) {
/* Two PCI slot */
case 0x11:
case 0x12:
ret = (irq_num + devno - 0x10) % 4;
break;
default:
printf("Error:%s:unknown dev number\n", __func__);
}
pci_debug("%s: devfn %x irq %d -> %d devno:%x\n", __func__,
pci_dev->devfn, irq_num, ret, devno);
return ret;
}
static void mpc85xx_pci_set_irq(void *opaque, int irq_num, int level)
{
qemu_irq *pic = opaque;
pci_debug("%s: PCI irq %d, level:%d\n", __func__, irq_num, level);
qemu_set_irq(pic[irq_num], level);
}
static const VMStateDescription vmstate_pci_outbound = {
.name = "pci_outbound",
.version_id = 0,
.minimum_version_id = 0,
.minimum_version_id_old = 0,
.fields = (VMStateField[]) {
VMSTATE_UINT32(potar, struct pci_outbound),
VMSTATE_UINT32(potear, struct pci_outbound),
VMSTATE_UINT32(powbar, struct pci_outbound),
VMSTATE_UINT32(powar, struct pci_outbound),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_pci_inbound = {
.name = "pci_inbound",
.version_id = 0,
.minimum_version_id = 0,
.minimum_version_id_old = 0,
.fields = (VMStateField[]) {
VMSTATE_UINT32(pitar, struct pci_inbound),
VMSTATE_UINT32(piwbar, struct pci_inbound),
VMSTATE_UINT32(piwbear, struct pci_inbound),
VMSTATE_UINT32(piwar, struct pci_inbound),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_ppce500_pci = {
.name = "ppce500_pci",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_STRUCT_ARRAY(pob, PPCE500PCIState, PPCE500_PCI_NR_POBS, 1,
vmstate_pci_outbound, struct pci_outbound),
VMSTATE_STRUCT_ARRAY(pib, PPCE500PCIState, PPCE500_PCI_NR_PIBS, 1,
vmstate_pci_outbound, struct pci_inbound),
VMSTATE_UINT32(gasket_time, PPCE500PCIState),
VMSTATE_END_OF_LIST()
}
};
static void e500_pci_map(SysBusDevice *dev, target_phys_addr_t base)
{
PCIHostState *h = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev));
PPCE500PCIState *s = DO_UPCAST(PPCE500PCIState, pci_state, h);
cpu_register_physical_memory(base + PCIE500_CFGADDR, 4, s->cfgaddr);
cpu_register_physical_memory(base + PCIE500_CFGDATA, 4, s->cfgdata);
cpu_register_physical_memory(base + PCIE500_REG_BASE, PCIE500_REG_SIZE,
s->reg);
}
#include "exec-memory.h"
static int e500_pcihost_initfn(SysBusDevice *dev)
{
PCIHostState *h;
PPCE500PCIState *s;
PCIBus *b;
int i;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *address_space_io = get_system_io();
h = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev));
s = DO_UPCAST(PPCE500PCIState, pci_state, h);
for (i = 0; i < ARRAY_SIZE(s->irq); i++) {
sysbus_init_irq(dev, &s->irq[i]);
}
b = pci_register_bus(&s->pci_state.busdev.qdev, NULL, mpc85xx_pci_set_irq,
mpc85xx_pci_map_irq, s->irq, address_space_mem,
address_space_io, PCI_DEVFN(0x11, 0), 4);
s->pci_state.bus = b;
pci_create_simple(b, 0, "e500-host-bridge");
s->cfgaddr = pci_host_conf_register_mmio(&s->pci_state, DEVICE_BIG_ENDIAN);
s->cfgdata = pci_host_data_register_mmio(&s->pci_state,
DEVICE_LITTLE_ENDIAN);
s->reg = cpu_register_io_memory(e500_pci_reg_read, e500_pci_reg_write, s,
DEVICE_BIG_ENDIAN);
sysbus_init_mmio_cb(dev, PCIE500_ALL_SIZE, e500_pci_map);
return 0;
}
static PCIDeviceInfo e500_host_bridge_info = {
.qdev.name = "e500-host-bridge",
.qdev.desc = "Host bridge",
.qdev.size = sizeof(PCIDevice),
.vendor_id = PCI_VENDOR_ID_FREESCALE,
.device_id = PCI_DEVICE_ID_MPC8533E,
.class_id = PCI_CLASS_PROCESSOR_POWERPC,
};
static SysBusDeviceInfo e500_pcihost_info = {
.init = e500_pcihost_initfn,
.qdev.name = "e500-pcihost",
.qdev.size = sizeof(PPCE500PCIState),
.qdev.vmsd = &vmstate_ppce500_pci,
};
static void e500_pci_register(void)
{
sysbus_register_withprop(&e500_pcihost_info);
pci_qdev_register(&e500_host_bridge_info);
}
device_init(e500_pci_register);
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