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qemu/hw/apb_pci.c
Markus Armbruster e23a1b33b5 New qdev_init_nofail() 
Like qdev_init(), but terminate program via hw_error() instead of
returning an error value.

Use it instead of qdev_init() where terminating the program on failure
is okay, either because it's during machine construction, or because
we know that failure can't happen.

Because relying in the latter is somewhat unclean, and the former is
not always obvious, it would be nice to go back to qdev_init() in the
not-so-obvious cases, only with proper error handling.  I'm leaving
that for another day, because it involves making sure that error
values are properly checked by all callers.

Patchworks-ID: 35168
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-07 08:54:54 -05:00

320 lines
9.0 KiB
C
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/*
* QEMU Ultrasparc APB 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.
*/
/* XXX This file and most of its contents are somewhat misnamed. The
Ultrasparc PCI host is called the PCI Bus Module (PBM). The APB is
the secondary PCI bridge. */
#include "sysbus.h"
#include "pci.h"
/* debug APB */
//#define DEBUG_APB
#ifdef DEBUG_APB
#define APB_DPRINTF(fmt, ...) \
do { printf("APB: " fmt , ## __VA_ARGS__); } while (0)
#else
#define APB_DPRINTF(fmt, ...)
#endif
typedef target_phys_addr_t pci_addr_t;
#include "pci_host.h"
typedef struct APBState {
SysBusDevice busdev;
PCIHostState host_state;
} APBState;
static void pci_apb_config_writel (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
APBState *s = opaque;
#ifdef TARGET_WORDS_BIGENDIAN
val = bswap32(val);
#endif
APB_DPRINTF("config_writel addr " TARGET_FMT_plx " val %x\n", addr,
val);
s->host_state.config_reg = val;
}
static uint32_t pci_apb_config_readl (void *opaque,
target_phys_addr_t addr)
{
APBState *s = opaque;
uint32_t val;
val = s->host_state.config_reg;
#ifdef TARGET_WORDS_BIGENDIAN
val = bswap32(val);
#endif
APB_DPRINTF("config_readl addr " TARGET_FMT_plx " val %x\n", addr,
val);
return val;
}
static CPUWriteMemoryFunc * const pci_apb_config_write[] = {
&pci_apb_config_writel,
&pci_apb_config_writel,
&pci_apb_config_writel,
};
static CPUReadMemoryFunc * const pci_apb_config_read[] = {
&pci_apb_config_readl,
&pci_apb_config_readl,
&pci_apb_config_readl,
};
static void apb_config_writel (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
//PCIBus *s = opaque;
switch (addr & 0x3f) {
case 0x00: // Control/Status
case 0x10: // AFSR
case 0x18: // AFAR
case 0x20: // Diagnostic
case 0x28: // Target address space
// XXX
default:
break;
}
}
static uint32_t apb_config_readl (void *opaque,
target_phys_addr_t addr)
{
//PCIBus *s = opaque;
uint32_t val;
switch (addr & 0x3f) {
case 0x00: // Control/Status
case 0x10: // AFSR
case 0x18: // AFAR
case 0x20: // Diagnostic
case 0x28: // Target address space
// XXX
default:
val = 0;
break;
}
return val;
}
static CPUWriteMemoryFunc * const apb_config_write[] = {
&apb_config_writel,
&apb_config_writel,
&apb_config_writel,
};
static CPUReadMemoryFunc * const apb_config_read[] = {
&apb_config_readl,
&apb_config_readl,
&apb_config_readl,
};
static CPUWriteMemoryFunc * const pci_apb_write[] = {
&pci_host_data_writeb,
&pci_host_data_writew,
&pci_host_data_writel,
};
static CPUReadMemoryFunc * const pci_apb_read[] = {
&pci_host_data_readb,
&pci_host_data_readw,
&pci_host_data_readl,
};
static void pci_apb_iowriteb (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
cpu_outb(addr & IOPORTS_MASK, val);
}
static void pci_apb_iowritew (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
cpu_outw(addr & IOPORTS_MASK, val);
}
static void pci_apb_iowritel (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
cpu_outl(addr & IOPORTS_MASK, val);
}
static uint32_t pci_apb_ioreadb (void *opaque, target_phys_addr_t addr)
{
uint32_t val;
val = cpu_inb(addr & IOPORTS_MASK);
return val;
}
static uint32_t pci_apb_ioreadw (void *opaque, target_phys_addr_t addr)
{
uint32_t val;
val = cpu_inw(addr & IOPORTS_MASK);
return val;
}
static uint32_t pci_apb_ioreadl (void *opaque, target_phys_addr_t addr)
{
uint32_t val;
val = cpu_inl(addr & IOPORTS_MASK);
return val;
}
static CPUWriteMemoryFunc * const pci_apb_iowrite[] = {
&pci_apb_iowriteb,
&pci_apb_iowritew,
&pci_apb_iowritel,
};
static CPUReadMemoryFunc * const pci_apb_ioread[] = {
&pci_apb_ioreadb,
&pci_apb_ioreadw,
&pci_apb_ioreadl,
};
/* The APB host has an IRQ line for each IRQ line of each slot. */
static int pci_apb_map_irq(PCIDevice *pci_dev, int irq_num)
{
return ((pci_dev->devfn & 0x18) >> 1) + irq_num;
}
static int pci_pbm_map_irq(PCIDevice *pci_dev, int irq_num)
{
int bus_offset;
if (pci_dev->devfn & 1)
bus_offset = 16;
else
bus_offset = 0;
return bus_offset + irq_num;
}
static void pci_apb_set_irq(void *opaque, int irq_num, int level)
{
qemu_irq *pic = opaque;
/* PCI IRQ map onto the first 32 INO. */
qemu_set_irq(pic[irq_num], level);
}
PCIBus *pci_apb_init(target_phys_addr_t special_base,
target_phys_addr_t mem_base,
qemu_irq *pic, PCIBus **bus2, PCIBus **bus3)
{
DeviceState *dev;
SysBusDevice *s;
APBState *d;
/* Ultrasparc PBM main bus */
dev = qdev_create(NULL, "pbm");
qdev_init_nofail(dev);
s = sysbus_from_qdev(dev);
/* apb_config */
sysbus_mmio_map(s, 0, special_base + 0x2000ULL);
/* pci_ioport */
sysbus_mmio_map(s, 1, special_base + 0x2000000ULL);
/* mem_config: XXX size should be 4G-prom */
sysbus_mmio_map(s, 2, special_base + 0x1000000ULL);
/* mem_data */
sysbus_mmio_map(s, 3, mem_base);
d = FROM_SYSBUS(APBState, s);
d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
pci_apb_set_irq, pci_pbm_map_irq, pic,
0, 32);
pci_create_simple(d->host_state.bus, 0, "pbm");
/* APB secondary busses */
*bus2 = pci_bridge_init(d->host_state.bus, 8, PCI_VENDOR_ID_SUN,
PCI_DEVICE_ID_SUN_SIMBA, pci_apb_map_irq,
"Advanced PCI Bus secondary bridge 1");
*bus3 = pci_bridge_init(d->host_state.bus, 9, PCI_VENDOR_ID_SUN,
PCI_DEVICE_ID_SUN_SIMBA, pci_apb_map_irq,
"Advanced PCI Bus secondary bridge 2");
return d->host_state.bus;
}
static int pci_pbm_init_device(SysBusDevice *dev)
{
APBState *s;
int pci_mem_config, pci_mem_data, apb_config, pci_ioport;
s = FROM_SYSBUS(APBState, dev);
/* apb_config */
apb_config = cpu_register_io_memory(apb_config_read,
apb_config_write, s);
sysbus_init_mmio(dev, 0x40ULL, apb_config);
/* pci_ioport */
pci_ioport = cpu_register_io_memory(pci_apb_ioread,
pci_apb_iowrite, s);
sysbus_init_mmio(dev, 0x10000ULL, pci_ioport);
/* mem_config */
pci_mem_config = cpu_register_io_memory(pci_apb_config_read,
pci_apb_config_write, s);
sysbus_init_mmio(dev, 0x10ULL, pci_mem_config);
/* mem_data */
pci_mem_data = cpu_register_io_memory(pci_apb_read,
pci_apb_write, &s->host_state);
sysbus_init_mmio(dev, 0x10000000ULL, pci_mem_data);
return 0;
}
static int pbm_pci_host_init(PCIDevice *d)
{
pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_SUN);
pci_config_set_device_id(d->config, PCI_DEVICE_ID_SUN_SABRE);
d->config[0x04] = 0x06; // command = bus master, pci mem
d->config[0x05] = 0x00;
d->config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error
d->config[0x07] = 0x03; // status = medium devsel
d->config[0x08] = 0x00; // revision
d->config[0x09] = 0x00; // programming i/f
pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
d->config[0x0D] = 0x10; // latency_timer
d->config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
return 0;
}
static PCIDeviceInfo pbm_pci_host_info = {
.qdev.name = "pbm",
.qdev.size = sizeof(PCIDevice),
.init = pbm_pci_host_init,
};
static void pbm_register_devices(void)
{
sysbus_register_dev("pbm", sizeof(APBState), pci_pbm_init_device);
pci_qdev_register(&pbm_pci_host_info);
}
device_init(pbm_register_devices)
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