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fdc: Move qdev properties to FloppyDrive

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This makes the FloppyDrive qdev object actually useful: Now that it has
all properties that don't belong to the controller, you can actually
use '-device floppy' and get a working result.

Command line semantics is consistent with CD-ROM drives: By default you
get a single empty floppy drive. You can override it with -drive and
using the same index, but if you use -drive to add a floppy to a
different index, you get both of them. However, as soon as you use any
'-device floppy', even to a different slot, the default drive is
disabled.

Using '-device floppy' without specifying the unit will choose the first
free slot on the controller.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 1477386868-21826-4-git-send-email-kwolf@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Kevin Wolf 2016-10-27 16:29:13 -04:00 committed by John Snow
parent 394ea2cac4
commit a92bd191a4
2 changed files with 90 additions and 33 deletions
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122
hw/block/fdc.c
View File

@ -35,6 +35,7 @@
#include "qemu/timer.h"
#include "hw/isa/isa.h"
#include "hw/sysbus.h"
#include "hw/block/block.h"
#include "sysemu/block-backend.h"
#include "sysemu/blockdev.h"
#include "sysemu/sysemu.h"
@ -487,12 +488,18 @@ static const BlockDevOps fd_block_ops = {
OBJECT_CHECK(FloppyDrive, (obj), TYPE_FLOPPY_DRIVE)
typedef struct FloppyDrive {
DeviceState qdev;
uint32_t unit;
DeviceState qdev;
uint32_t unit;
BlockConf conf;
FloppyDriveType type;
} FloppyDrive;
static Property floppy_drive_properties[] = {
DEFINE_PROP_UINT32("unit", FloppyDrive, unit, -1),
DEFINE_BLOCK_PROPERTIES(FloppyDrive, conf),
DEFINE_PROP_DEFAULT("drive-type", FloppyDrive, type,
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_END_OF_LIST(),
};
@ -501,6 +508,7 @@ static int floppy_drive_init(DeviceState *qdev)
FloppyDrive *dev = FLOPPY_DRIVE(qdev);
FloppyBus *bus = FLOPPY_BUS(qdev->parent_bus);
FDrive *drive;
int ret;
if (dev->unit == -1) {
for (dev->unit = 0; dev->unit < MAX_FD; dev->unit++) {
@ -517,29 +525,57 @@ static int floppy_drive_init(DeviceState *qdev)
return -1;
}
/* TODO Check whether unit is in use */
drive = get_drv(bus->fdc, dev->unit);
if (drive->blk) {
if (blk_get_on_error(drive->blk, 0) != BLOCKDEV_ON_ERROR_ENOSPC) {
error_report("fdc doesn't support drive option werror");
return -1;
}
if (blk_get_on_error(drive->blk, 1) != BLOCKDEV_ON_ERROR_REPORT) {
error_report("fdc doesn't support drive option rerror");
return -1;
}
} else {
/* Anonymous BlockBackend for an empty drive */
drive->blk = blk_new();
error_report("Floppy unit %d is in use", dev->unit);
return -1;
}
if (!dev->conf.blk) {
/* Anonymous BlockBackend for an empty drive */
dev->conf.blk = blk_new();
ret = blk_attach_dev(dev->conf.blk, qdev);
assert(ret == 0);
}
blkconf_blocksizes(&dev->conf);
if (dev->conf.logical_block_size != 512 ||
dev->conf.physical_block_size != 512)
{
error_report("Physical and logical block size must be 512 for floppy");
return -1;
}
/* rerror/werror aren't supported by fdc and therefore not even registered
* with qdev. So set the defaults manually before they are used in
* blkconf_apply_backend_options(). */
dev->conf.rerror = BLOCKDEV_ON_ERROR_AUTO;
dev->conf.werror = BLOCKDEV_ON_ERROR_AUTO;
blkconf_apply_backend_options(&dev->conf);
/* 'enospc' is the default for -drive, 'report' is what blk_new() gives us
* for empty drives. */
if (blk_get_on_error(dev->conf.blk, 0) != BLOCKDEV_ON_ERROR_ENOSPC &&
blk_get_on_error(dev->conf.blk, 0) != BLOCKDEV_ON_ERROR_REPORT) {
error_report("fdc doesn't support drive option werror");
return -1;
}
if (blk_get_on_error(dev->conf.blk, 1) != BLOCKDEV_ON_ERROR_REPORT) {
error_report("fdc doesn't support drive option rerror");
return -1;
}
drive->blk = dev->conf.blk;
drive->fdctrl = bus->fdc;
fd_init(drive);
if (drive->blk) {
blk_set_dev_ops(drive->blk, &fd_block_ops, drive);
pick_drive_type(drive);
}
blk_set_dev_ops(drive->blk, &fd_block_ops, drive);
/* Keep 'type' qdev property and FDrive->drive in sync */
drive->drive = dev->type;
pick_drive_type(drive);
dev->type = drive->drive;
fd_revalidate(drive);
return 0;
@ -808,6 +844,10 @@ struct FDCtrl {
FloppyBus bus;
uint8_t num_floppies;
FDrive drives[MAX_FD];
struct {
BlockBackend *blk;
FloppyDriveType type;
} qdev_for_drives[MAX_FD];
int reset_sensei;
uint32_t check_media_rate;
FloppyDriveType fallback; /* type=auto failure fallback */
@ -2459,11 +2499,13 @@ static void fdctrl_result_timer(void *opaque)
}
/* Init functions */
static void fdctrl_connect_drives(FDCtrl *fdctrl, Error **errp)
static void fdctrl_connect_drives(FDCtrl *fdctrl, Error **errp,
DeviceState *fdc_dev)
{
unsigned int i;
FDrive *drive;
DeviceState *dev;
BlockBackend *blk;
Error *local_err = NULL;
for (i = 0; i < MAX_FD; i++) {
@ -2472,7 +2514,8 @@ static void fdctrl_connect_drives(FDCtrl *fdctrl, Error **errp)
/* If the drive is not present, we skip creating the qdev device, but
* still have to initialise the controller. */
if (!fdctrl->drives[i].blk) {
blk = fdctrl->qdev_for_drives[i].blk;
if (!blk) {
fd_init(drive);
fd_revalidate(drive);
continue;
@ -2480,6 +2523,19 @@ static void fdctrl_connect_drives(FDCtrl *fdctrl, Error **errp)
dev = qdev_create(&fdctrl->bus.bus, "floppy");
qdev_prop_set_uint32(dev, "unit", i);
qdev_prop_set_enum(dev, "drive-type", fdctrl->qdev_for_drives[i].type);
blk_ref(blk);
blk_detach_dev(blk, fdc_dev);
fdctrl->qdev_for_drives[i].blk = NULL;
qdev_prop_set_drive(dev, "drive", blk, &local_err);
blk_unref(blk);
if (local_err) {
error_propagate(errp, local_err);
return;
}
object_property_set_bool(OBJECT(dev), true, "realized", &local_err);
if (local_err) {
error_propagate(errp, local_err);
@ -2597,7 +2653,7 @@ static void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl,
}
floppy_bus_create(fdctrl, &fdctrl->bus, dev);
fdctrl_connect_drives(fdctrl, errp);
fdctrl_connect_drives(fdctrl, errp, dev);
}
static const MemoryRegionPortio fdc_portio_list[] = {
@ -2723,14 +2779,14 @@ static Property isa_fdc_properties[] = {
DEFINE_PROP_UINT32("iobase", FDCtrlISABus, iobase, 0x3f0),
DEFINE_PROP_UINT32("irq", FDCtrlISABus, irq, 6),
DEFINE_PROP_UINT32("dma", FDCtrlISABus, dma, 2),
DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].blk),
DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].blk),
DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.qdev_for_drives[0].blk),
DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.qdev_for_drives[1].blk),
DEFINE_PROP_BIT("check_media_rate", FDCtrlISABus, state.check_media_rate,
0, true),
DEFINE_PROP_DEFAULT("fdtypeA", FDCtrlISABus, state.drives[0].drive,
DEFINE_PROP_DEFAULT("fdtypeA", FDCtrlISABus, state.qdev_for_drives[0].type,
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_DEFAULT("fdtypeB", FDCtrlISABus, state.drives[1].drive,
DEFINE_PROP_DEFAULT("fdtypeB", FDCtrlISABus, state.qdev_for_drives[1].type,
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,
@ -2782,12 +2838,12 @@ static const VMStateDescription vmstate_sysbus_fdc ={
};
static Property sysbus_fdc_properties[] = {
DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].blk),
DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].blk),
DEFINE_PROP_DEFAULT("fdtypeA", FDCtrlSysBus, state.drives[0].drive,
DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.qdev_for_drives[0].blk),
DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.qdev_for_drives[1].blk),
DEFINE_PROP_DEFAULT("fdtypeA", FDCtrlSysBus, state.qdev_for_drives[0].type,
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_DEFAULT("fdtypeB", FDCtrlSysBus, state.drives[1].drive,
DEFINE_PROP_DEFAULT("fdtypeB", FDCtrlSysBus, state.qdev_for_drives[1].type,
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,
@ -2812,8 +2868,8 @@ static const TypeInfo sysbus_fdc_info = {
};
static Property sun4m_fdc_properties[] = {
DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].blk),
DEFINE_PROP_DEFAULT("fdtype", FDCtrlSysBus, state.drives[0].drive,
DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.qdev_for_drives[0].blk),
DEFINE_PROP_DEFAULT("fdtype", FDCtrlSysBus, state.qdev_for_drives[0].type,
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
FloppyDriveType),
DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,

1
vl.c
View File

@ -218,6 +218,7 @@ static struct {
{ .driver = "isa-serial", .flag = &default_serial },
{ .driver = "isa-parallel", .flag = &default_parallel },
{ .driver = "isa-fdc", .flag = &default_floppy },
{ .driver = "floppy", .flag = &default_floppy },
{ .driver = "ide-cd", .flag = &default_cdrom },
{ .driver = "ide-hd", .flag = &default_cdrom },
{ .driver = "ide-drive", .flag = &default_cdrom },