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Fixed SCSI hard disk allocation (MT #04595). [Curt Coder]

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This commit is contained in:
Curt Coder 2012-01-16 12:55:29 +00:00
parent d7e654e978
commit 52316975ca
2 changed files with 42 additions and 24 deletions
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4
src/emu/imagedev/harddriv.c
View File

@ -76,7 +76,9 @@ const device_type HARDDISK = &device_creator<harddisk_image_device>;
harddisk_image_device::harddisk_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, HARDDISK, "Harddisk", tag, owner, clock),
device_image_interface(mconfig, *this)
device_image_interface(mconfig, *this),
m_chd(NULL),
m_hard_disk_handle(NULL)
{
}

62
src/emu/machine/scsihd.c
View File

@ -15,8 +15,9 @@ typedef struct
UINT32 lba;
UINT32 blocks;
int sectorbytes;
chd_file *handle;
hard_disk_file *disk;
bool is_file;
bool is_image_device;
} SCSIHd;
@ -253,43 +254,58 @@ static void scsihd_alloc_instance( SCSIInstance *scsiInstance, const char *diskr
our_this->blocks = 0;
our_this->sectorbytes = 512;
// Attempt to register save state entry after state registration is closed!
state_save_register_item( machine, "scsihd", diskregion, 0, our_this->lba );
state_save_register_item( machine, "scsihd", diskregion, 0, our_this->blocks );
if (machine.device( diskregion )) {
our_this->is_file = TRUE;
our_this->disk = machine.device<harddisk_image_device>(diskregion)->get_hard_disk_file();
} else {
for (device_t *device = machine.devicelist().first(); device != NULL; device = device->next())
// try to locate the CHD from a DISK_REGION
our_this->handle = get_disk_handle(machine, diskregion);
our_this->disk = hard_disk_open(our_this->handle);
our_this->is_image_device = false;
if (our_this->disk == NULL)
{
// try to locate the CHD from an image device
harddisk_image_device *image_device = machine.device<harddisk_image_device>(diskregion);
if (image_device != NULL)
{
if (device->subdevice(diskregion)) {
our_this->is_file = TRUE;
our_this->disk = device->subdevice<harddisk_image_device>(diskregion)->get_hard_disk_file();
}
}
if (!our_this->disk)
{
our_this->is_file = FALSE;
our_this->disk = hard_disk_open(get_disk_handle( machine, diskregion ));
our_this->handle = image_device->get_chd_file();
our_this->disk = hard_disk_open(our_this->handle);
our_this->is_image_device = true;
}
}
if (!our_this->disk)
if (our_this->disk == NULL)
{
logerror("SCSIHD: no HD found!\n");
// try to locate the CHD from an image subdevice
for (device_t *device = machine.devicelist().first(); device != NULL; device = device->next())
{
if (device->subdevice(diskregion) != NULL)
{
our_this->handle = device->subdevice<harddisk_image_device>(diskregion)->get_chd_file();
our_this->disk = hard_disk_open(our_this->handle);
our_this->is_image_device = true;
}
}
}
if (our_this->disk != NULL)
{
// get hard disk sector size from CHD metadata
const hard_disk_info *hdinfo = hard_disk_get_info(our_this->disk);
our_this->sectorbytes = hdinfo->sectorbytes;
}
else
{
const hard_disk_info *hdinfo = hard_disk_get_info(our_this->disk);
our_this->sectorbytes = hdinfo->sectorbytes;
logerror("SCSIHD: no HD found!\n");
}
}
static void scsihd_delete_instance( SCSIInstance *scsiInstance )
{
SCSIHd *our_this = (SCSIHd *)SCSIThis( &SCSIClassHARDDISK, scsiInstance );
if (!our_this->is_file) {
if (!our_this->is_image_device) {
if( our_this->disk )
{
hard_disk_close( our_this->disk );