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hw/block/fdc: Declare shared prototypes in fdc-internal.h

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We want to extract ISA/SysBus code from the generic fdc.c file.
First, declare the prototypes we will access from the new units
into a new local header: "fdc-internal.h".

Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210614193220.2007159-4-philmd@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2021-06-14 21:32:17 +02:00 committed by John Snow
parent fbb11567fb
commit 5a5d2f3d26
3 changed files with 168 additions and 122 deletions
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1
MAINTAINERS
View file

@ -1671,6 +1671,7 @@ M: John Snow <jsnow@redhat.com>
L: qemu-block@nongnu.org
S: Supported
F: hw/block/fdc.c
F: hw/block/fdc-internal.h
F: include/hw/block/fdc.h
F: tests/qtest/fdc-test.c
T: git https://gitlab.com/jsnow/qemu.git ide

158
hw/block/fdc-internal.h Normal file
View file

@ -0,0 +1,158 @@
/*
* 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.
*/
#ifndef HW_BLOCK_FDC_INTERNAL_H
#define HW_BLOCK_FDC_INTERNAL_H
#include "exec/memory.h"
#include "exec/ioport.h"
#include "hw/block/block.h"
#include "hw/block/fdc.h"
#include "qapi/qapi-types-block.h"
typedef struct FDCtrl FDCtrl;
/* Floppy bus emulation */
typedef struct FloppyBus {
BusState bus;
FDCtrl *fdc;
} FloppyBus;
/* Floppy disk drive emulation */
typedef enum FDriveRate {
FDRIVE_RATE_500K = 0x00, /* 500 Kbps */
FDRIVE_RATE_300K = 0x01, /* 300 Kbps */
FDRIVE_RATE_250K = 0x02, /* 250 Kbps */
FDRIVE_RATE_1M = 0x03, /* 1 Mbps */
} FDriveRate;
typedef enum FDriveSize {
FDRIVE_SIZE_UNKNOWN,
FDRIVE_SIZE_350,
FDRIVE_SIZE_525,
} FDriveSize;
typedef struct FDFormat {
FloppyDriveType drive;
uint8_t last_sect;
uint8_t max_track;
uint8_t max_head;
FDriveRate rate;
} FDFormat;
typedef enum FDiskFlags {
FDISK_DBL_SIDES = 0x01,
} FDiskFlags;
typedef struct FDrive {
FDCtrl *fdctrl;
BlockBackend *blk;
BlockConf *conf;
/* Drive status */
FloppyDriveType drive; /* CMOS drive type */
uint8_t perpendicular; /* 2.88 MB access mode */
/* Position */
uint8_t head;
uint8_t track;
uint8_t sect;
/* Media */
FloppyDriveType disk; /* Current disk type */
FDiskFlags flags;
uint8_t last_sect; /* Nb sector per track */
uint8_t max_track; /* Nb of tracks */
uint16_t bps; /* Bytes per sector */
uint8_t ro; /* Is read-only */
uint8_t media_changed; /* Is media changed */
uint8_t media_rate; /* Data rate of medium */
bool media_validated; /* Have we validated the media? */
} FDrive;
struct FDCtrl {
MemoryRegion iomem;
qemu_irq irq;
/* Controller state */
QEMUTimer *result_timer;
int dma_chann;
uint8_t phase;
IsaDma *dma;
/* Controller's identification */
uint8_t version;
/* HW */
uint8_t sra;
uint8_t srb;
uint8_t dor;
uint8_t dor_vmstate; /* only used as temp during vmstate */
uint8_t tdr;
uint8_t dsr;
uint8_t msr;
uint8_t cur_drv;
uint8_t status0;
uint8_t status1;
uint8_t status2;
/* Command FIFO */
uint8_t *fifo;
int32_t fifo_size;
uint32_t data_pos;
uint32_t data_len;
uint8_t data_state;
uint8_t data_dir;
uint8_t eot; /* last wanted sector */
/* States kept only to be returned back */
/* precompensation */
uint8_t precomp_trk;
uint8_t config;
uint8_t lock;
/* Power down config (also with status regB access mode */
uint8_t pwrd;
/* Floppy drives */
FloppyBus bus;
uint8_t num_floppies;
FDrive drives[MAX_FD];
struct {
FloppyDriveType type;
} qdev_for_drives[MAX_FD];
int reset_sensei;
FloppyDriveType fallback; /* type=auto failure fallback */
/* Timers state */
uint8_t timer0;
uint8_t timer1;
PortioList portio_list;
};
extern const FDFormat fd_formats[];
extern const VMStateDescription vmstate_fdc;
uint32_t fdctrl_read(void *opaque, uint32_t reg);
void fdctrl_write(void *opaque, uint32_t reg, uint32_t value);
void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl, Error **errp);
int fdctrl_transfer_handler(void *opaque, int nchan, int dma_pos, int dma_len);
void fdctrl_init_drives(FloppyBus *bus, DriveInfo **fds);
#endif

131
hw/block/fdc.c
View file

@ -48,6 +48,7 @@
#include "qemu/module.h"
#include "trace.h"
#include "qom/object.h"
#include "fdc-internal.h"
/********************************************************/
/* debug Floppy devices */
@ -68,15 +69,8 @@
#define TYPE_FLOPPY_BUS "floppy-bus"
OBJECT_DECLARE_SIMPLE_TYPE(FloppyBus, FLOPPY_BUS)
typedef struct FDCtrl FDCtrl;
typedef struct FDrive FDrive;
static FDrive *get_drv(FDCtrl *fdctrl, int unit);
struct FloppyBus {
BusState bus;
FDCtrl *fdc;
};
static const TypeInfo floppy_bus_info = {
.name = TYPE_FLOPPY_BUS,
.parent = TYPE_BUS,
@ -93,32 +87,11 @@ static void floppy_bus_create(FDCtrl *fdc, FloppyBus *bus, DeviceState *dev)
/********************************************************/
/* Floppy drive emulation */
typedef enum FDriveRate {
FDRIVE_RATE_500K = 0x00, /* 500 Kbps */
FDRIVE_RATE_300K = 0x01, /* 300 Kbps */
FDRIVE_RATE_250K = 0x02, /* 250 Kbps */
FDRIVE_RATE_1M = 0x03, /* 1 Mbps */
} FDriveRate;
typedef enum FDriveSize {
FDRIVE_SIZE_UNKNOWN,
FDRIVE_SIZE_350,
FDRIVE_SIZE_525,
} FDriveSize;
typedef struct FDFormat {
FloppyDriveType drive;
uint8_t last_sect;
uint8_t max_track;
uint8_t max_head;
FDriveRate rate;
} FDFormat;
/* In many cases, the total sector size of a format is enough to uniquely
* identify it. However, there are some total sector collisions between
* formats of different physical size, and these are noted below by
* highlighting the total sector size for entries with collisions. */
static const FDFormat fd_formats[] = {
const FDFormat fd_formats[] = {
/* First entry is default format */
/* 1.44 MB 3"1/2 floppy disks */
{ FLOPPY_DRIVE_TYPE_144, 18, 80, 1, FDRIVE_RATE_500K, }, /* 3.5" 2880 */
@ -186,35 +159,6 @@ static FDriveSize drive_size(FloppyDriveType drive)
#define FD_SECTOR_SC 2 /* Sector size code */
#define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
/* Floppy disk drive emulation */
typedef enum FDiskFlags {
FDISK_DBL_SIDES = 0x01,
} FDiskFlags;
struct FDrive {
FDCtrl *fdctrl;
BlockBackend *blk;
BlockConf *conf;
/* Drive status */
FloppyDriveType drive; /* CMOS drive type */
uint8_t perpendicular; /* 2.88 MB access mode */
/* Position */
uint8_t head;
uint8_t track;
uint8_t sect;
/* Media */
FloppyDriveType disk; /* Current disk type */
FDiskFlags flags;
uint8_t last_sect; /* Nb sector per track */
uint8_t max_track; /* Nb of tracks */
uint16_t bps; /* Bytes per sector */
uint8_t ro; /* Is read-only */
uint8_t media_changed; /* Is media changed */
uint8_t media_rate; /* Data rate of medium */
bool media_validated; /* Have we validated the media? */
};
static FloppyDriveType get_fallback_drive_type(FDrive *drv);
@ -626,10 +570,7 @@ static const TypeInfo floppy_drive_info = {
/********************************************************/
/* Intel 82078 floppy disk controller emulation */
static void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
static void fdctrl_to_command_phase(FDCtrl *fdctrl);
static int fdctrl_transfer_handler (void *opaque, int nchan,
int dma_pos, int dma_len);
static void fdctrl_raise_irq(FDCtrl *fdctrl);
static FDrive *get_cur_drv(FDCtrl *fdctrl);
@ -828,58 +769,6 @@ enum {
#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
struct FDCtrl {
MemoryRegion iomem;
qemu_irq irq;
/* Controller state */
QEMUTimer *result_timer;
int dma_chann;
uint8_t phase;
IsaDma *dma;
/* Controller's identification */
uint8_t version;
/* HW */
uint8_t sra;
uint8_t srb;
uint8_t dor;
uint8_t dor_vmstate; /* only used as temp during vmstate */
uint8_t tdr;
uint8_t dsr;
uint8_t msr;
uint8_t cur_drv;
uint8_t status0;
uint8_t status1;
uint8_t status2;
/* Command FIFO */
uint8_t *fifo;
int32_t fifo_size;
uint32_t data_pos;
uint32_t data_len;
uint8_t data_state;
uint8_t data_dir;
uint8_t eot; /* last wanted sector */
/* States kept only to be returned back */
/* precompensation */
uint8_t precomp_trk;
uint8_t config;
uint8_t lock;
/* Power down config (also with status regB access mode */
uint8_t pwrd;
/* Floppy drives */
FloppyBus bus;
uint8_t num_floppies;
FDrive drives[MAX_FD];
struct {
FloppyDriveType type;
} qdev_for_drives[MAX_FD];
int reset_sensei;
FloppyDriveType fallback; /* type=auto failure fallback */
/* Timers state */
uint8_t timer0;
uint8_t timer1;
PortioList portio_list;
};
static FloppyDriveType get_fallback_drive_type(FDrive *drv)
{
return drv->fdctrl->fallback;
@ -909,7 +798,7 @@ struct FDCtrlISABus {
int32_t bootindexB;
};
static uint32_t fdctrl_read (void *opaque, uint32_t reg)
uint32_t fdctrl_read(void *opaque, uint32_t reg)
{
FDCtrl *fdctrl = opaque;
uint32_t retval;
@ -946,7 +835,7 @@ static uint32_t fdctrl_read (void *opaque, uint32_t reg)
return retval;
}
static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
void fdctrl_write(void *opaque, uint32_t reg, uint32_t value)
{
FDCtrl *fdctrl = opaque;
@ -1178,7 +1067,7 @@ static const VMStateDescription vmstate_fdc_phase = {
}
};
static const VMStateDescription vmstate_fdc = {
const VMStateDescription vmstate_fdc = {
.name = "fdc",
.version_id = 2,
.minimum_version_id = 2,
@ -1268,7 +1157,7 @@ static void fdctrl_raise_irq(FDCtrl *fdctrl)
}
/* Reset controller */
static void fdctrl_reset(FDCtrl *fdctrl, int do_irq)
void fdctrl_reset(FDCtrl *fdctrl, int do_irq)
{
int i;
@ -1747,8 +1636,7 @@ static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction)
}
/* handlers for DMA transfers */
static int fdctrl_transfer_handler (void *opaque, int nchan,
int dma_pos, int dma_len)
int fdctrl_transfer_handler(void *opaque, int nchan, int dma_pos, int dma_len)
{
FDCtrl *fdctrl;
FDrive *cur_drv;
@ -2484,7 +2372,7 @@ static void fdctrl_result_timer(void *opaque)
/* Init functions */
static void fdctrl_init_drives(FloppyBus *bus, DriveInfo **fds)
void fdctrl_init_drives(FloppyBus *bus, DriveInfo **fds)
{
DeviceState *dev;
int i;
@ -2542,8 +2430,7 @@ void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,
fdctrl_init_drives(&sys->state.bus, fds);
}
static void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl,
Error **errp)
void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl, Error **errp)
{
int i, j;
FDrive *drive;