cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

fdc-internal.h (4693B)

      1/*
      2 * QEMU Floppy disk emulator (Intel 82078)
      3 *
      4 * Copyright (c) 2003, 2007 Jocelyn Mayer
      5 * Copyright (c) 2008 Hervé Poussineau
      6 *
      7 * Permission is hereby granted, free of charge, to any person obtaining a copy
      8 * of this software and associated documentation files (the "Software"), to deal
      9 * in the Software without restriction, including without limitation the rights
     10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     11 * copies of the Software, and to permit persons to whom the Software is
     12 * furnished to do so, subject to the following conditions:
     13 *
     14 * The above copyright notice and this permission notice shall be included in
     15 * all copies or substantial portions of the Software.
     16 *
     17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     23 * THE SOFTWARE.
     24 */
     25#ifndef HW_BLOCK_FDC_INTERNAL_H
     26#define HW_BLOCK_FDC_INTERNAL_H
     27
     28#include "exec/memory.h"
     29#include "exec/ioport.h"
     30#include "hw/block/block.h"
     31#include "hw/block/fdc.h"
     32#include "qapi/qapi-types-block.h"
     33
     34typedef struct FDCtrl FDCtrl;
     35
     36/* Floppy bus emulation */
     37
     38typedef struct FloppyBus {
     39    BusState bus;
     40    FDCtrl *fdc;
     41} FloppyBus;
     42
     43/* Floppy disk drive emulation */
     44
     45typedef enum FDriveRate {
     46    FDRIVE_RATE_500K = 0x00,  /* 500 Kbps */
     47    FDRIVE_RATE_300K = 0x01,  /* 300 Kbps */
     48    FDRIVE_RATE_250K = 0x02,  /* 250 Kbps */
     49    FDRIVE_RATE_1M   = 0x03,  /*   1 Mbps */
     50} FDriveRate;
     51
     52typedef enum FDriveSize {
     53    FDRIVE_SIZE_UNKNOWN,
     54    FDRIVE_SIZE_350,
     55    FDRIVE_SIZE_525,
     56} FDriveSize;
     57
     58typedef struct FDFormat {
     59    FloppyDriveType drive;
     60    uint8_t last_sect;
     61    uint8_t max_track;
     62    uint8_t max_head;
     63    FDriveRate rate;
     64} FDFormat;
     65
     66typedef enum FDiskFlags {
     67    FDISK_DBL_SIDES  = 0x01,
     68} FDiskFlags;
     69
     70typedef struct FDrive {
     71    FDCtrl *fdctrl;
     72    BlockBackend *blk;
     73    BlockConf *conf;
     74    /* Drive status */
     75    FloppyDriveType drive;    /* CMOS drive type        */
     76    uint8_t perpendicular;    /* 2.88 MB access mode    */
     77    /* Position */
     78    uint8_t head;
     79    uint8_t track;
     80    uint8_t sect;
     81    /* Media */
     82    FloppyDriveType disk;     /* Current disk type      */
     83    FDiskFlags flags;
     84    uint8_t last_sect;        /* Nb sector per track    */
     85    uint8_t max_track;        /* Nb of tracks           */
     86    uint16_t bps;             /* Bytes per sector       */
     87    uint8_t ro;               /* Is read-only           */
     88    uint8_t media_changed;    /* Is media changed       */
     89    uint8_t media_rate;       /* Data rate of medium    */
     90
     91    bool media_validated;     /* Have we validated the media? */
     92} FDrive;
     93
     94struct FDCtrl {
     95    MemoryRegion iomem;
     96    qemu_irq irq;
     97    /* Controller state */
     98    QEMUTimer *result_timer;
     99    int dma_chann;
    100    uint8_t phase;
    101    IsaDma *dma;
    102    /* Controller's identification */
    103    uint8_t version;
    104    /* HW */
    105    uint8_t sra;
    106    uint8_t srb;
    107    uint8_t dor;
    108    uint8_t dor_vmstate; /* only used as temp during vmstate */
    109    uint8_t tdr;
    110    uint8_t dsr;
    111    uint8_t msr;
    112    uint8_t cur_drv;
    113    uint8_t status0;
    114    uint8_t status1;
    115    uint8_t status2;
    116    /* Command FIFO */
    117    uint8_t *fifo;
    118    int32_t fifo_size;
    119    uint32_t data_pos;
    120    uint32_t data_len;
    121    uint8_t data_state;
    122    uint8_t data_dir;
    123    uint8_t eot; /* last wanted sector */
    124    /* States kept only to be returned back */
    125    /* precompensation */
    126    uint8_t precomp_trk;
    127    uint8_t config;
    128    uint8_t lock;
    129    /* Power down config (also with status regB access mode */
    130    uint8_t pwrd;
    131    /* Floppy drives */
    132    FloppyBus bus;
    133    uint8_t num_floppies;
    134    FDrive drives[MAX_FD];
    135    struct {
    136        FloppyDriveType type;
    137    } qdev_for_drives[MAX_FD];
    138    int reset_sensei;
    139    FloppyDriveType fallback; /* type=auto failure fallback */
    140    /* Timers state */
    141    uint8_t timer0;
    142    uint8_t timer1;
    143    PortioList portio_list;
    144};
    145
    146extern const FDFormat fd_formats[];
    147extern const VMStateDescription vmstate_fdc;
    148
    149uint32_t fdctrl_read(void *opaque, uint32_t reg);
    150void fdctrl_write(void *opaque, uint32_t reg, uint32_t value);
    151void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
    152void fdctrl_realize_common(DeviceState *dev, FDCtrl *fdctrl, Error **errp);
    153
    154int fdctrl_transfer_handler(void *opaque, int nchan, int dma_pos, int dma_len);
    155
    156void fdctrl_init_drives(FloppyBus *bus, DriveInfo **fds);
    157
    158#endif