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pc: Fix CMOS info for drives defined with -device 

Drives defined with -drive if=ide get get created along with the IDE
controller, inside machine->init().  That's before cmos_init().
Drives defined with -device get created during generic device init.
That's after cmos_init().  Because of that, CMOS has no information on
them (type, geometry, translation).  Older versions of Windows such as
XP reportedly choke on that.

Split off the part of CMOS initialization that needs to know about
-device devices, and turn it into a reset handler, so it runs after
device creation.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2010-06-24 19:58:20 +02:00 committed by Kevin Wolf
parent 57c888664b
commit c0897e0cb9
5 changed files with 81 additions and 41 deletions
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2
hw/ide.h
View File

@ -24,4 +24,6 @@ void mmio_ide_init (target_phys_addr_t membase, target_phys_addr_t membase2,
qemu_irq irq, int shift,
DriveInfo *hd0, DriveInfo *hd1);
void ide_get_bs(BlockDriverState *bs[], BusState *qbus);
#endif /* HW_IDE_H */

7
hw/ide/qdev.c
View File

@ -88,6 +88,13 @@ IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
return DO_UPCAST(IDEDevice, qdev, dev);
}
void ide_get_bs(BlockDriverState *bs[], BusState *qbus)
{
IDEBus *bus = DO_UPCAST(IDEBus, qbus, qbus);
bs[0] = bus->master ? bus->master->conf.bs : NULL;
bs[1] = bus->slave ? bus->slave->conf.bs : NULL;
}
/* --------------------------------- */
typedef struct IDEDrive {

94
hw/pc.c
View File

@ -25,6 +25,7 @@
#include "pc.h"
#include "apic.h"
#include "fdc.h"
#include "ide.h"
#include "pci.h"
#include "vmware_vga.h"
#include "monitor.h"
@ -275,14 +276,65 @@ static int pc_boot_set(void *opaque, const char *boot_device)
return set_boot_dev(opaque, boot_device, 0);
}
/* hd_table must contain 4 block drivers */
typedef struct pc_cmos_init_late_arg {
ISADevice *rtc_state;
BusState *idebus0, *idebus1;
} pc_cmos_init_late_arg;
static void pc_cmos_init_late(void *opaque)
{
pc_cmos_init_late_arg *arg = opaque;
ISADevice *s = arg->rtc_state;
int val;
BlockDriverState *hd_table[4];
int i;
ide_get_bs(hd_table, arg->idebus0);
ide_get_bs(hd_table + 2, arg->idebus1);
rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
if (hd_table[0])
cmos_init_hd(0x19, 0x1b, hd_table[0], s);
if (hd_table[1])
cmos_init_hd(0x1a, 0x24, hd_table[1], s);
val = 0;
for (i = 0; i < 4; i++) {
if (hd_table[i]) {
int cylinders, heads, sectors, translation;
/* NOTE: bdrv_get_geometry_hint() returns the physical
geometry. It is always such that: 1 <= sects <= 63, 1
<= heads <= 16, 1 <= cylinders <= 16383. The BIOS
geometry can be different if a translation is done. */
translation = bdrv_get_translation_hint(hd_table[i]);
if (translation == BIOS_ATA_TRANSLATION_AUTO) {
bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
/* No translation. */
translation = 0;
} else {
/* LBA translation. */
translation = 1;
}
} else {
translation--;
}
val |= translation << (i * 2);
}
}
rtc_set_memory(s, 0x39, val);
qemu_unregister_reset(pc_cmos_init_late, opaque);
}
void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
const char *boot_device, DriveInfo **hd_table,
const char *boot_device,
BusState *idebus0, BusState *idebus1,
FDCtrl *floppy_controller, ISADevice *s)
{
int val;
int fd0, fd1, nb;
int i;
static pc_cmos_init_late_arg arg;
/* various important CMOS locations needed by PC/Bochs bios */
@ -351,38 +403,10 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
/* hard drives */
rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
if (hd_table[0])
cmos_init_hd(0x19, 0x1b, hd_table[0]->bdrv, s);
if (hd_table[1])
cmos_init_hd(0x1a, 0x24, hd_table[1]->bdrv, s);
val = 0;
for (i = 0; i < 4; i++) {
if (hd_table[i]) {
int cylinders, heads, sectors, translation;
/* NOTE: bdrv_get_geometry_hint() returns the physical
geometry. It is always such that: 1 <= sects <= 63, 1
<= heads <= 16, 1 <= cylinders <= 16383. The BIOS
geometry can be different if a translation is done. */
translation = bdrv_get_translation_hint(hd_table[i]->bdrv);
if (translation == BIOS_ATA_TRANSLATION_AUTO) {
bdrv_get_geometry_hint(hd_table[i]->bdrv, &cylinders, &heads, &sectors);
if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
/* No translation. */
translation = 0;
} else {
/* LBA translation. */
translation = 1;
}
} else {
translation--;
}
val |= translation << (i * 2);
}
}
rtc_set_memory(s, 0x39, val);
arg.rtc_state = s;
arg.idebus0 = idebus0;
arg.idebus1 = idebus1;
qemu_register_reset(pc_cmos_init_late, &arg);
}
static void handle_a20_line_change(void *opaque, int irq, int level)

3
hw/pc.h
View File

@ -104,7 +104,8 @@ void pc_init_ne2k_isa(NICInfo *nd);
void pc_audio_init (PCIBus *pci_bus, qemu_irq *pic);
#endif
void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
const char *boot_device, DriveInfo **hd_table,
const char *boot_device,
BusState *ide0, BusState *ide1,
FDCtrl *floppy_controller, ISADevice *s);
void pc_pci_device_init(PCIBus *pci_bus);

16
hw/pc_piix.c
View File

@ -79,6 +79,7 @@ static void pc_init1(ram_addr_t ram_size,
IsaIrqState *isa_irq_state;
DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
FDCtrl *floppy_controller;
BusState *idebus[MAX_IDE_BUS];
ISADevice *rtc_state;
pc_cpus_init(cpu_model);
@ -132,18 +133,23 @@ static void pc_init1(ram_addr_t ram_size,
}
if (pci_enabled) {
pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
PCIDevice *dev;
dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
} else {
for(i = 0; i < MAX_IDE_BUS; i++) {
isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
ISADevice *dev;
dev = isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
idebus[i] = qdev_get_child_bus(&dev->qdev, "ide.0");
}
}
pc_audio_init(pci_enabled ? pci_bus : NULL, isa_irq);
pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd,
floppy_controller, rtc_state);
pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device,
idebus[0], idebus[1], floppy_controller, rtc_state);
if (pci_enabled && usb_enabled) {
usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);