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Diffstat (limited to 'hw/block/fdc-internal.h')
| -rw-r--r-- | hw/block/fdc-internal.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/hw/block/fdc-internal.h b/hw/block/fdc-internal.h new file mode 100644 index 0000000000..036392e9fc --- /dev/null +++ b/hw/block/fdc-internal.h @@ -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 |