321 lines
9.9 KiB
C
321 lines
9.9 KiB
C
/*
|
|
* QEMU Floppy disk emulator (Intel 82078)
|
|
*
|
|
* Copyright (c) 2003, 2007 Jocelyn Mayer
|
|
* Copyright (c) 2008 Hervé Poussineau
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
/*
|
|
* The controller is used in Sun4m systems in a slightly different
|
|
* way. There are changes in DOR register and DMA is not available.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/block/fdc.h"
|
|
#include "qapi/error.h"
|
|
#include "qemu/error-report.h"
|
|
#include "qemu/timer.h"
|
|
#include "hw/acpi/aml-build.h"
|
|
#include "hw/irq.h"
|
|
#include "hw/isa/isa.h"
|
|
#include "hw/qdev-properties.h"
|
|
#include "hw/qdev-properties-system.h"
|
|
#include "migration/vmstate.h"
|
|
#include "hw/block/block.h"
|
|
#include "sysemu/block-backend.h"
|
|
#include "sysemu/blockdev.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "qemu/log.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "qemu/module.h"
|
|
#include "trace.h"
|
|
#include "qom/object.h"
|
|
#include "fdc-internal.h"
|
|
|
|
OBJECT_DECLARE_SIMPLE_TYPE(FDCtrlISABus, ISA_FDC)
|
|
|
|
struct FDCtrlISABus {
|
|
/*< private >*/
|
|
ISADevice parent_obj;
|
|
/*< public >*/
|
|
|
|
uint32_t iobase;
|
|
uint32_t irq;
|
|
uint32_t dma;
|
|
struct FDCtrl state;
|
|
int32_t bootindexA;
|
|
int32_t bootindexB;
|
|
};
|
|
|
|
static void fdctrl_external_reset_isa(DeviceState *d)
|
|
{
|
|
FDCtrlISABus *isa = ISA_FDC(d);
|
|
FDCtrl *s = &isa->state;
|
|
|
|
fdctrl_reset(s, 0);
|
|
}
|
|
|
|
void isa_fdc_init_drives(ISADevice *fdc, DriveInfo **fds)
|
|
{
|
|
fdctrl_init_drives(&ISA_FDC(fdc)->state.bus, fds);
|
|
}
|
|
|
|
static const MemoryRegionPortio fdc_portio_list[] = {
|
|
{ 1, 5, 1, .read = fdctrl_read, .write = fdctrl_write },
|
|
{ 7, 1, 1, .read = fdctrl_read, .write = fdctrl_write },
|
|
PORTIO_END_OF_LIST(),
|
|
};
|
|
|
|
static void isabus_fdc_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
ISADevice *isadev = ISA_DEVICE(dev);
|
|
FDCtrlISABus *isa = ISA_FDC(dev);
|
|
FDCtrl *fdctrl = &isa->state;
|
|
Error *err = NULL;
|
|
|
|
isa_register_portio_list(isadev, &fdctrl->portio_list,
|
|
isa->iobase, fdc_portio_list, fdctrl,
|
|
"fdc");
|
|
|
|
isa_init_irq(isadev, &fdctrl->irq, isa->irq);
|
|
fdctrl->dma_chann = isa->dma;
|
|
if (fdctrl->dma_chann != -1) {
|
|
IsaDmaClass *k;
|
|
fdctrl->dma = isa_get_dma(isa_bus_from_device(isadev), isa->dma);
|
|
if (!fdctrl->dma) {
|
|
error_setg(errp, "ISA controller does not support DMA");
|
|
return;
|
|
}
|
|
k = ISADMA_GET_CLASS(fdctrl->dma);
|
|
k->register_channel(fdctrl->dma, fdctrl->dma_chann,
|
|
&fdctrl_transfer_handler, fdctrl);
|
|
}
|
|
|
|
qdev_set_legacy_instance_id(dev, isa->iobase, 2);
|
|
|
|
fdctrl_realize_common(dev, fdctrl, &err);
|
|
if (err != NULL) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
}
|
|
|
|
FloppyDriveType isa_fdc_get_drive_type(ISADevice *fdc, int i)
|
|
{
|
|
FDCtrlISABus *isa = ISA_FDC(fdc);
|
|
|
|
return isa->state.drives[i].drive;
|
|
}
|
|
|
|
static void isa_fdc_get_drive_max_chs(FloppyDriveType type, uint8_t *maxc,
|
|
uint8_t *maxh, uint8_t *maxs)
|
|
{
|
|
const FDFormat *fdf;
|
|
|
|
*maxc = *maxh = *maxs = 0;
|
|
for (fdf = fd_formats; fdf->drive != FLOPPY_DRIVE_TYPE_NONE; fdf++) {
|
|
if (fdf->drive != type) {
|
|
continue;
|
|
}
|
|
if (*maxc < fdf->max_track) {
|
|
*maxc = fdf->max_track;
|
|
}
|
|
if (*maxh < fdf->max_head) {
|
|
*maxh = fdf->max_head;
|
|
}
|
|
if (*maxs < fdf->last_sect) {
|
|
*maxs = fdf->last_sect;
|
|
}
|
|
}
|
|
(*maxc)--;
|
|
}
|
|
|
|
static Aml *build_fdinfo_aml(int idx, FloppyDriveType type)
|
|
{
|
|
Aml *dev, *fdi;
|
|
uint8_t maxc, maxh, maxs;
|
|
|
|
isa_fdc_get_drive_max_chs(type, &maxc, &maxh, &maxs);
|
|
|
|
dev = aml_device("FLP%c", 'A' + idx);
|
|
|
|
aml_append(dev, aml_name_decl("_ADR", aml_int(idx)));
|
|
|
|
fdi = aml_package(16);
|
|
aml_append(fdi, aml_int(idx)); /* Drive Number */
|
|
aml_append(fdi,
|
|
aml_int(cmos_get_fd_drive_type(type))); /* Device Type */
|
|
/*
|
|
* the values below are the limits of the drive, and are thus independent
|
|
* of the inserted media
|
|
*/
|
|
aml_append(fdi, aml_int(maxc)); /* Maximum Cylinder Number */
|
|
aml_append(fdi, aml_int(maxs)); /* Maximum Sector Number */
|
|
aml_append(fdi, aml_int(maxh)); /* Maximum Head Number */
|
|
/*
|
|
* SeaBIOS returns the below values for int 0x13 func 0x08 regardless of
|
|
* the drive type, so shall we
|
|
*/
|
|
aml_append(fdi, aml_int(0xAF)); /* disk_specify_1 */
|
|
aml_append(fdi, aml_int(0x02)); /* disk_specify_2 */
|
|
aml_append(fdi, aml_int(0x25)); /* disk_motor_wait */
|
|
aml_append(fdi, aml_int(0x02)); /* disk_sector_siz */
|
|
aml_append(fdi, aml_int(0x12)); /* disk_eot */
|
|
aml_append(fdi, aml_int(0x1B)); /* disk_rw_gap */
|
|
aml_append(fdi, aml_int(0xFF)); /* disk_dtl */
|
|
aml_append(fdi, aml_int(0x6C)); /* disk_formt_gap */
|
|
aml_append(fdi, aml_int(0xF6)); /* disk_fill */
|
|
aml_append(fdi, aml_int(0x0F)); /* disk_head_sttl */
|
|
aml_append(fdi, aml_int(0x08)); /* disk_motor_strt */
|
|
|
|
aml_append(dev, aml_name_decl("_FDI", fdi));
|
|
return dev;
|
|
}
|
|
|
|
int cmos_get_fd_drive_type(FloppyDriveType fd0)
|
|
{
|
|
int val;
|
|
|
|
switch (fd0) {
|
|
case FLOPPY_DRIVE_TYPE_144:
|
|
/* 1.44 Mb 3"5 drive */
|
|
val = 4;
|
|
break;
|
|
case FLOPPY_DRIVE_TYPE_288:
|
|
/* 2.88 Mb 3"5 drive */
|
|
val = 5;
|
|
break;
|
|
case FLOPPY_DRIVE_TYPE_120:
|
|
/* 1.2 Mb 5"5 drive */
|
|
val = 2;
|
|
break;
|
|
case FLOPPY_DRIVE_TYPE_NONE:
|
|
default:
|
|
val = 0;
|
|
break;
|
|
}
|
|
return val;
|
|
}
|
|
|
|
static void fdc_isa_build_aml(ISADevice *isadev, Aml *scope)
|
|
{
|
|
Aml *dev;
|
|
Aml *crs;
|
|
int i;
|
|
|
|
#define ACPI_FDE_MAX_FD 4
|
|
uint32_t fde_buf[5] = {
|
|
0, 0, 0, 0, /* presence of floppy drives #0 - #3 */
|
|
cpu_to_le32(2) /* tape presence (2 == never present) */
|
|
};
|
|
|
|
crs = aml_resource_template();
|
|
aml_append(crs, aml_io(AML_DECODE16, 0x03F2, 0x03F2, 0x00, 0x04));
|
|
aml_append(crs, aml_io(AML_DECODE16, 0x03F7, 0x03F7, 0x00, 0x01));
|
|
aml_append(crs, aml_irq_no_flags(6));
|
|
aml_append(crs,
|
|
aml_dma(AML_COMPATIBILITY, AML_NOTBUSMASTER, AML_TRANSFER8, 2));
|
|
|
|
dev = aml_device("FDC0");
|
|
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0700")));
|
|
aml_append(dev, aml_name_decl("_CRS", crs));
|
|
|
|
for (i = 0; i < MIN(MAX_FD, ACPI_FDE_MAX_FD); i++) {
|
|
FloppyDriveType type = isa_fdc_get_drive_type(isadev, i);
|
|
|
|
if (type < FLOPPY_DRIVE_TYPE_NONE) {
|
|
fde_buf[i] = cpu_to_le32(1); /* drive present */
|
|
aml_append(dev, build_fdinfo_aml(i, type));
|
|
}
|
|
}
|
|
aml_append(dev, aml_name_decl("_FDE",
|
|
aml_buffer(sizeof(fde_buf), (uint8_t *)fde_buf)));
|
|
|
|
aml_append(scope, dev);
|
|
}
|
|
|
|
static const VMStateDescription vmstate_isa_fdc = {
|
|
.name = "fdc",
|
|
.version_id = 2,
|
|
.minimum_version_id = 2,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_STRUCT(state, FDCtrlISABus, 0, vmstate_fdc, FDCtrl),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
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_SIGNED("fdtypeA", FDCtrlISABus, state.qdev_for_drives[0].type,
|
|
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
|
|
FloppyDriveType),
|
|
DEFINE_PROP_SIGNED("fdtypeB", FDCtrlISABus, state.qdev_for_drives[1].type,
|
|
FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
|
|
FloppyDriveType),
|
|
DEFINE_PROP_SIGNED("fallback", FDCtrlISABus, state.fallback,
|
|
FLOPPY_DRIVE_TYPE_288, qdev_prop_fdc_drive_type,
|
|
FloppyDriveType),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void isabus_fdc_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
ISADeviceClass *isa = ISA_DEVICE_CLASS(klass);
|
|
|
|
dc->desc = "virtual floppy controller";
|
|
dc->realize = isabus_fdc_realize;
|
|
dc->fw_name = "fdc";
|
|
dc->reset = fdctrl_external_reset_isa;
|
|
dc->vmsd = &vmstate_isa_fdc;
|
|
isa->build_aml = fdc_isa_build_aml;
|
|
device_class_set_props(dc, isa_fdc_properties);
|
|
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
|
|
}
|
|
|
|
static void isabus_fdc_instance_init(Object *obj)
|
|
{
|
|
FDCtrlISABus *isa = ISA_FDC(obj);
|
|
|
|
device_add_bootindex_property(obj, &isa->bootindexA,
|
|
"bootindexA", "/floppy@0",
|
|
DEVICE(obj));
|
|
device_add_bootindex_property(obj, &isa->bootindexB,
|
|
"bootindexB", "/floppy@1",
|
|
DEVICE(obj));
|
|
}
|
|
|
|
static const TypeInfo isa_fdc_info = {
|
|
.name = TYPE_ISA_FDC,
|
|
.parent = TYPE_ISA_DEVICE,
|
|
.instance_size = sizeof(FDCtrlISABus),
|
|
.class_init = isabus_fdc_class_init,
|
|
.instance_init = isabus_fdc_instance_init,
|
|
};
|
|
|
|
static void isa_fdc_register_types(void)
|
|
{
|
|
type_register_static(&isa_fdc_info);
|
|
}
|
|
|
|
type_init(isa_fdc_register_types)
|