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[Qemu-devel] [PATCH v4 08/12] fdc: add drive type option
From: |
John Snow |
Subject: |
[Qemu-devel] [PATCH v4 08/12] fdc: add drive type option |
Date: |
Wed, 20 Jan 2016 01:51:30 -0500 |
This patch adds a new explicit Floppy Drive Type option. The existing
behavior in QEMU is to automatically guess a drive type based on the
media inserted, or if a diskette is not present, arbitrarily assign one.
This behavior can be described as "auto." This patch adds the option
to pick an explicit behavior: 120, 144, 288 or none. The new "auto"
option is intended to mimic current behavior, while the other types
pick one explicitly.
Set the type given by the CLI during fd_init. If the type remains the
default (auto), we'll attempt to scan an inserted diskette if present
to determine a type. If auto is selected but no diskette is present,
we fall back to a predetermined default (currently 1.44MB to match
legacy QEMU behavior.)
Signed-off-by: John Snow <address@hidden>
---
hw/block/fdc.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index e9551e5..f475add 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -159,7 +159,6 @@ static FloppyDriveType get_fallback_drive_type(FDrive *drv);
static void fd_init(FDrive *drv)
{
/* Drive */
- drv->drive = FLOPPY_DRIVE_TYPE_NONE;
drv->perpendicular = 0;
/* Disk */
drv->disk = FLOPPY_DRIVE_TYPE_NONE;
@@ -263,7 +262,7 @@ static int pick_geometry(FDrive *drv)
int i, first_match, match;
/* We can only pick a geometry if we have a diskette. */
- if (!drv->media_inserted) {
+ if ((!drv->media_inserted) || (drv->drive == FLOPPY_DRIVE_TYPE_NONE)) {
return -1;
}
@@ -276,7 +275,7 @@ static int pick_geometry(FDrive *drv)
break;
}
if (drv->drive == parse->drive ||
- drv->drive == FLOPPY_DRIVE_TYPE_NONE) {
+ drv->drive == FLOPPY_DRIVE_TYPE_AUTO) {
size = (parse->max_head + 1) * parse->max_track *
parse->last_sect;
if (nb_sectors == size) {
@@ -313,11 +312,17 @@ static int pick_geometry(FDrive *drv)
static void pick_drive_type(FDrive *drv)
{
+ if (drv->drive != FLOPPY_DRIVE_TYPE_AUTO) {
+ return;
+ }
+
if (pick_geometry(drv) == 0) {
drv->drive = drv->disk;
} else {
drv->drive = get_fallback_drive_type(drv);
}
+
+ g_assert(drv->drive != FLOPPY_DRIVE_TYPE_AUTO);
}
/* Revalidate a disk drive after a disk change */
@@ -2474,6 +2479,12 @@ static Property isa_fdc_properties[] = {
DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.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,
+ FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
+ FloppyDriveType),
+ DEFINE_PROP_DEFAULT("fdtypeB", FDCtrlISABus, state.drives[1].drive,
+ FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
+ FloppyDriveType),
DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,
FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
FloppyDriveType),
@@ -2525,6 +2536,12 @@ 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,
+ FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
+ FloppyDriveType),
+ DEFINE_PROP_DEFAULT("fdtypeB", FDCtrlSysBus, state.drives[1].drive,
+ FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
+ FloppyDriveType),
DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,
FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
FloppyDriveType),
@@ -2548,6 +2565,9 @@ 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,
+ FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
+ FloppyDriveType),
DEFINE_PROP_DEFAULT("fallback", FDCtrlISABus, state.fallback,
FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
FloppyDriveType),
--
2.4.3
- [Qemu-devel] [PATCH v4 07/12] fdc: Add fallback option, (continued)
- [Qemu-devel] [PATCH v4 07/12] fdc: Add fallback option, John Snow, 2016/01/20
- [Qemu-devel] [PATCH v4 11/12] qtest/fdc: Support for 2.88MB drives, John Snow, 2016/01/20
- [Qemu-devel] [PATCH v4 10/12] fdc: rework pick_geometry, John Snow, 2016/01/20
- [Qemu-devel] [PATCH v4 12/12] fdc: change auto fallback drive for ISA FDC to 288, John Snow, 2016/01/20
- [Qemu-devel] [PATCH v4 01/12] fdc: move pick_geometry, John Snow, 2016/01/20
- [Qemu-devel] [PATCH v4 05/12] fdc: Throw an assertion on misconfigured fd_formats table, John Snow, 2016/01/20
- [Qemu-devel] [PATCH v4 08/12] fdc: add drive type option,
John Snow <=
- [Qemu-devel] [PATCH v4 09/12] fdc: add physical disk sizes, John Snow, 2016/01/20
- Re: [Qemu-devel] [Qemu-block] [PATCH v4 00/12] fdc: fix 2.88mb floppy diskette support, Denis V. Lunev, 2016/01/20