qemu/hw/vga-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

153 lines
4.8 KiB
C

/*
* QEMU PCI VGA Emulator.
*
* Copyright (c) 2003 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 "console.h"
#include "pc.h"
#include "pci.h"
#include "vga_int.h"
#include "pixel_ops.h"
#include "qemu-timer.h"
typedef struct PCIVGAState {
PCIDevice dev;
VGACommonState vga;
} PCIVGAState;
static void pci_vga_save(QEMUFile *f, void *opaque)
{
PCIVGAState *s = opaque;
pci_device_save(&s->dev, f);
vga_common_save(f, &s->vga);
}
static int pci_vga_load(QEMUFile *f, void *opaque, int version_id)
{
PCIVGAState *s = opaque;
int ret;
if (version_id > 2)
return -EINVAL;
if (version_id >= 2) {
ret = pci_device_load(&s->dev, f);
if (ret < 0)
return ret;
}
return vga_common_load(f, &s->vga, version_id);
}
static void vga_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
PCIVGAState *d = (PCIVGAState *)pci_dev;
VGACommonState *s = &d->vga;
if (region_num == PCI_ROM_SLOT) {
cpu_register_physical_memory(addr, s->bios_size, s->bios_offset);
} else {
cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
s->map_addr = addr;
s->map_end = addr + s->vram_size;
vga_dirty_log_start(s);
}
}
static void pci_vga_write_config(PCIDevice *d,
uint32_t address, uint32_t val, int len)
{
PCIVGAState *pvs = container_of(d, PCIVGAState, dev);
VGACommonState *s = &pvs->vga;
pci_default_write_config(d, address, val, len);
if (s->map_addr && pvs->dev.io_regions[0].addr == -1)
s->map_addr = 0;
}
static int pci_vga_initfn(PCIDevice *dev)
{
PCIVGAState *d = DO_UPCAST(PCIVGAState, dev, dev);
VGACommonState *s = &d->vga;
uint8_t *pci_conf = d->dev.config;
// vga + console init
vga_common_init(s, VGA_RAM_SIZE);
vga_init(s);
register_savevm("vga", 0, 2, pci_vga_save, pci_vga_load, d);
s->ds = graphic_console_init(s->update, s->invalidate,
s->screen_dump, s->text_update, s);
// dummy VGA (same as Bochs ID)
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_QEMU);
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_QEMU_VGA);
pci_config_set_class(pci_conf, PCI_CLASS_DISPLAY_VGA);
pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
/* XXX: VGA_RAM_SIZE must be a power of two */
pci_register_bar(&d->dev, 0, VGA_RAM_SIZE,
PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
if (s->bios_size) {
unsigned int bios_total_size;
/* must be a power of two */
bios_total_size = 1;
while (bios_total_size < s->bios_size)
bios_total_size <<= 1;
pci_register_bar(&d->dev, PCI_ROM_SLOT, bios_total_size,
PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
}
return 0;
}
int pci_vga_init(PCIBus *bus,
unsigned long vga_bios_offset, int vga_bios_size)
{
PCIDevice *dev;
dev = pci_create(bus, -1, "VGA");
qdev_prop_set_uint32(&dev->qdev, "bios-offset", vga_bios_offset);
qdev_prop_set_uint32(&dev->qdev, "bios-size", vga_bios_offset);
qdev_init_nofail(&dev->qdev);
return 0;
}
static PCIDeviceInfo vga_info = {
.qdev.name = "VGA",
.qdev.size = sizeof(PCIVGAState),
.init = pci_vga_initfn,
.config_write = pci_vga_write_config,
.qdev.props = (Property[]) {
DEFINE_PROP_HEX32("bios-offset", PCIVGAState, vga.bios_offset, 0),
DEFINE_PROP_HEX32("bios-size", PCIVGAState, vga.bios_size, 0),
DEFINE_PROP_END_OF_LIST(),
}
};
static void vga_register(void)
{
pci_qdev_register(&vga_info);
}
device_init(vga_register);