fdc: Add fallback option
Currently, QEMU chooses a drive type automatically based on the inserted media. If there is no disk inserted, it chooses a 1.44MB drive type. Change this behavior to be configurable, but leave it defaulted to 1.44. This is not earnestly intended to be used by a user or a management library, but rather exists so that pre-2.6 board types can configure it to be a legacy value. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1453495865-9649-8-git-send-email-jsnow@redhat.com
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@ -154,6 +154,9 @@ typedef struct FDrive {
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bool media_validated; /* Have we validated the media? */
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} FDrive;
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static FloppyDriveType get_fallback_drive_type(FDrive *drv);
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static void fd_init(FDrive *drv)
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{
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/* Drive */
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@ -314,8 +317,7 @@ static void pick_drive_type(FDrive *drv)
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if (pick_geometry(drv) == 0) {
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drv->drive = drv->disk;
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} else {
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/* Legacy behavior: default to 1.44MB floppy */
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drv->drive = FLOPPY_DRIVE_TYPE_144;
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drv->drive = get_fallback_drive_type(drv);
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}
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}
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@ -598,11 +600,17 @@ struct FDCtrl {
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FDrive drives[MAX_FD];
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int reset_sensei;
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uint32_t check_media_rate;
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FloppyDriveType fallback; /* type=auto failure fallback */
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/* Timers state */
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uint8_t timer0;
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uint8_t timer1;
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};
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static FloppyDriveType get_fallback_drive_type(FDrive *drv)
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{
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return drv->fdctrl->fallback;
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}
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#define TYPE_SYSBUS_FDC "base-sysbus-fdc"
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#define SYSBUS_FDC(obj) OBJECT_CHECK(FDCtrlSysBus, (obj), TYPE_SYSBUS_FDC)
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@ -2338,6 +2346,10 @@ static void fdctrl_realize_common(FDCtrl *fdctrl, Error **errp)
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int i, j;
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static int command_tables_inited = 0;
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if (fdctrl->fallback == FLOPPY_DRIVE_TYPE_AUTO) {
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error_setg(errp, "Cannot choose a fallback FDrive type of 'auto'");
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}
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/* Fill 'command_to_handler' lookup table */
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if (!command_tables_inited) {
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command_tables_inited = 1;
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@ -2463,6 +2475,9 @@ static Property isa_fdc_properties[] = {
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DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].blk),
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DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate,
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0, true),
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DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,
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FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
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FloppyDriveType),
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DEFINE_PROP_END_OF_LIST(),
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};
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@ -2511,6 +2526,9 @@ static const VMStateDescription vmstate_sysbus_fdc ={
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static Property sysbus_fdc_properties[] = {
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DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].blk),
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DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].blk),
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DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,
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FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
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FloppyDriveType),
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DEFINE_PROP_END_OF_LIST(),
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};
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@ -2531,6 +2549,9 @@ static const TypeInfo sysbus_fdc_info = {
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static Property sun4m_fdc_properties[] = {
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DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].blk),
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DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,
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FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
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FloppyDriveType),
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DEFINE_PROP_END_OF_LIST(),
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};
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@ -541,6 +541,17 @@ PropertyInfo qdev_prop_bios_chs_trans = {
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.set = set_enum,
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};
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/* --- FDC default drive types */
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PropertyInfo qdev_prop_fdc_drive_type = {
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.name = "FdcDriveType",
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.description = "FDC drive type, "
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"144/288/120/none/auto",
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.enum_table = FloppyDriveType_lookup,
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.get = get_enum,
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.set = set_enum
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};
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/* --- pci address --- */
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/*
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@ -20,6 +20,7 @@ extern PropertyInfo qdev_prop_ptr;
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extern PropertyInfo qdev_prop_macaddr;
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extern PropertyInfo qdev_prop_losttickpolicy;
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extern PropertyInfo qdev_prop_bios_chs_trans;
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extern PropertyInfo qdev_prop_fdc_drive_type;
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extern PropertyInfo qdev_prop_drive;
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extern PropertyInfo qdev_prop_netdev;
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extern PropertyInfo qdev_prop_vlan;
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