/*
- * QEMU Floppy disk emulator
- *
- * Copyright (c) 2003 Jocelyn Mayer
- *
+ * 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
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <inttypes.h>
+/*
+ * The controller is used in Sun4m systems in a slightly different
+ * way. There are changes in DOR register and DMA is not available.
+ */
-#include "cpu.h"
-#include "vl.h"
+#include "hw.h"
+#include "fdc.h"
+#include "block.h"
+#include "qemu-timer.h"
+#include "isa.h"
+#include "sysbus.h"
+#include "qdev-addr.h"
/********************************************************/
/* debug Floppy devices */
//#define DEBUG_FLOPPY
#ifdef DEBUG_FLOPPY
-#define FLOPPY_DPRINTF(fmt, args...) \
-do { printf("FLOPPY: " fmt , ##args); } while (0)
+#define FLOPPY_DPRINTF(fmt, ...) \
+ do { printf("FLOPPY: " fmt , ## __VA_ARGS__); } while (0)
#else
-#define FLOPPY_DPRINTF(fmt, args...)
+#define FLOPPY_DPRINTF(fmt, ...)
#endif
-#define FLOPPY_ERROR(fmt, args...) \
-do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
+#define FLOPPY_ERROR(fmt, ...) \
+ do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ## __VA_ARGS__); } while (0)
/********************************************************/
/* Floppy drive emulation */
+#define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
+#define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
+
/* Will always be a fixed parameter for us */
-#define FD_SECTOR_LEN 512
-#define FD_SECTOR_SC 2 /* Sector size code */
+#define FD_SECTOR_LEN 512
+#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 fdisk_type_t {
+typedef enum FDiskType {
FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */
FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */
FDRIVE_DISK_720 = 0x03, /* 720 kB disk */
- FDRIVE_DISK_NONE = 0x04, /* No disk */
-} fdisk_type_t;
+ FDRIVE_DISK_USER = 0x04, /* User defined geometry */
+ FDRIVE_DISK_NONE = 0x05, /* No disk */
+} FDiskType;
-typedef enum fdrive_type_t {
+typedef enum FDriveType {
FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
FDRIVE_DRV_NONE = 0x03, /* No drive connected */
-} fdrive_type_t;
+} FDriveType;
+
+typedef enum FDiskFlags {
+ FDISK_DBL_SIDES = 0x01,
+} FDiskFlags;
-typedef struct fdrive_t {
+typedef struct FDrive {
+ DriveInfo *dinfo;
BlockDriverState *bs;
/* Drive status */
- fdrive_type_t drive;
- uint8_t motor; /* on/off */
+ FDriveType drive;
uint8_t perpendicular; /* 2.88 MB access mode */
- uint8_t rv; /* Revalidated */
/* Position */
uint8_t head;
uint8_t track;
uint8_t sect;
- /* Last operation status */
- uint8_t dir; /* Direction */
- uint8_t rw; /* Read/write */
/* Media */
- fdisk_type_t disk; /* 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 */
-} fdrive_t;
+} FDrive;
-static void fd_init (fdrive_t *drv)
+static void fd_init(FDrive *drv)
{
/* Drive */
- drv->bs = NULL;
-// drv->drive = FDRIVE_DRV_288;
- drv->drive = FDRIVE_DRV_144;
- drv->motor = 0;
+ drv->bs = drv->dinfo ? drv->dinfo->bdrv : NULL;
+ drv->drive = FDRIVE_DRV_NONE;
drv->perpendicular = 0;
- drv->rv = 0;
/* Disk */
- drv->disk = FDRIVE_DISK_NONE;
- drv->last_sect = 1;
+ drv->last_sect = 0;
drv->max_track = 0;
}
-static int _fd_sector (uint8_t head, uint8_t track,
- uint8_t sect, uint8_t last_sect)
+static int fd_sector_calc(uint8_t head, uint8_t track, uint8_t sect,
+ uint8_t last_sect)
{
return (((track * 2) + head) * last_sect) + sect - 1;
}
/* Returns current position, in sectors, for given drive */
-static int fd_sector (fdrive_t *drv)
+static int fd_sector(FDrive *drv)
{
- return _fd_sector(drv->head, drv->track, drv->sect, drv->last_sect);
+ return fd_sector_calc(drv->head, drv->track, drv->sect, drv->last_sect);
}
-static int fd_seek (fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect,
- int enable_seek)
+/* Seek to a new position:
+ * returns 0 if already on right track
+ * returns 1 if track changed
+ * returns 2 if track is invalid
+ * returns 3 if sector is invalid
+ * returns 4 if seek is disabled
+ */
+static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
+ int enable_seek)
{
uint32_t sector;
-
- if (track > drv->max_track) {
- FLOPPY_ERROR("try to read %d %02x %02x (max=%d %02x %02x)\n",
- head, track, sect, 1, drv->max_track, drv->last_sect);
+ int ret;
+
+ if (track > drv->max_track ||
+ (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
+ FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
+ head, track, sect, 1,
+ (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
+ drv->max_track, drv->last_sect);
return 2;
}
if (sect > drv->last_sect) {
- FLOPPY_ERROR("try to read %d %02x %02x (max=%d %02x %02x)\n",
- head, track, sect, 1, drv->max_track, drv->last_sect);
+ FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
+ head, track, sect, 1,
+ (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
+ drv->max_track, drv->last_sect);
return 3;
}
- sector = _fd_sector(head, track, sect, drv->last_sect);
+ sector = fd_sector_calc(head, track, sect, drv->last_sect);
+ ret = 0;
if (sector != fd_sector(drv)) {
#if 0
if (!enable_seek) {
}
#endif
drv->head = head;
+ if (drv->track != track)
+ ret = 1;
drv->track = track;
drv->sect = sect;
- return 1;
}
- return 0;
+ return ret;
}
/* Set drive back to track 0 */
-static void fd_recalibrate (fdrive_t *drv)
+static void fd_recalibrate(FDrive *drv)
{
FLOPPY_DPRINTF("recalibrate\n");
drv->head = 0;
drv->track = 0;
drv->sect = 1;
- drv->dir = 1;
- drv->rw = 0;
}
+/* Recognize floppy formats */
+typedef struct FDFormat {
+ FDriveType drive;
+ FDiskType disk;
+ uint8_t last_sect;
+ uint8_t max_track;
+ uint8_t max_head;
+ const char *str;
+} FDFormat;
+
+static const FDFormat fd_formats[] = {
+ /* First entry is default format */
+ /* 1.44 MB 3"1/2 floppy disks */
+ { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, "1.44 MB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, "1.6 MB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, "1.68 MB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, "1.72 MB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, "1.74 MB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, "1.76 MB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, "1.84 MB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, "1.92 MB 3\"1/2", },
+ /* 2.88 MB 3"1/2 floppy disks */
+ { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, "2.88 MB 3\"1/2", },
+ { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, "3.12 MB 3\"1/2", },
+ { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, "3.2 MB 3\"1/2", },
+ { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, "3.52 MB 3\"1/2", },
+ { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, "3.84 MB 3\"1/2", },
+ /* 720 kB 3"1/2 floppy disks */
+ { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, "720 kB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, "800 kB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, "820 kB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, "830 kB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, "1.04 MB 3\"1/2", },
+ { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, "1.12 MB 3\"1/2", },
+ /* 1.2 MB 5"1/4 floppy disks */
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, "1.2 kB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, "1.44 MB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, "1.48 MB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, "1.49 MB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, "1.6 MB 5\"1/4", },
+ /* 720 kB 5"1/4 floppy disks */
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, "720 kB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, "880 kB 5\"1/4", },
+ /* 360 kB 5"1/4 floppy disks */
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, "360 kB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, "180 kB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, "410 kB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, "420 kB 5\"1/4", },
+ /* 320 kB 5"1/4 floppy disks */
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, "320 kB 5\"1/4", },
+ { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, "160 kB 5\"1/4", },
+ /* 360 kB must match 5"1/4 better than 3"1/2... */
+ { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 0, "360 kB 3\"1/2", },
+ /* end */
+ { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, },
+};
+
/* Revalidate a disk drive after a disk change */
-static void fd_revalidate (fdrive_t *drv, int ro)
+static void fd_revalidate(FDrive *drv)
{
- int64_t nb_sectors;
+ const FDFormat *parse;
+ uint64_t nb_sectors, size;
+ int i, first_match, match;
+ int nb_heads, max_track, last_sect, ro;
FLOPPY_DPRINTF("revalidate\n");
- drv->rv = 0;
- if (drv->bs != NULL) {
- bdrv_get_geometry(drv->bs, &nb_sectors);
-#if 1
- if (nb_sectors > 2880)
-#endif
- {
- /* Pretend we have a 2.88 MB disk */
- drv->disk = FDRIVE_DISK_288;
- drv->last_sect = 36;
- drv->max_track = 80;
-#if 1
- } else if (nb_sectors > 1440) {
- /* Pretend we have a 1.44 MB disk */
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 18;
- drv->max_track = 80;
+ if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
+ ro = bdrv_is_read_only(drv->bs);
+ bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
+ if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
+ FLOPPY_DPRINTF("User defined disk (%d %d %d)",
+ nb_heads - 1, max_track, last_sect);
} else {
- /* Pretend we have a 720 kB disk */
- drv->disk = FDRIVE_DISK_720;
- drv->last_sect = 9;
- drv->max_track = 80;
-#endif
+ bdrv_get_geometry(drv->bs, &nb_sectors);
+ match = -1;
+ first_match = -1;
+ for (i = 0;; i++) {
+ parse = &fd_formats[i];
+ if (parse->drive == FDRIVE_DRV_NONE)
+ break;
+ if (drv->drive == parse->drive ||
+ drv->drive == FDRIVE_DRV_NONE) {
+ size = (parse->max_head + 1) * parse->max_track *
+ parse->last_sect;
+ if (nb_sectors == size) {
+ match = i;
+ break;
+ }
+ if (first_match == -1)
+ first_match = i;
+ }
+ }
+ if (match == -1) {
+ if (first_match == -1)
+ match = 1;
+ else
+ match = first_match;
+ parse = &fd_formats[match];
+ }
+ nb_heads = parse->max_head + 1;
+ max_track = parse->max_track;
+ last_sect = parse->last_sect;
+ drv->drive = parse->drive;
+ FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
+ nb_heads, max_track, last_sect, ro ? "ro" : "rw");
}
+ if (nb_heads == 1) {
+ drv->flags &= ~FDISK_DBL_SIDES;
+ } else {
+ drv->flags |= FDISK_DBL_SIDES;
+ }
+ drv->max_track = max_track;
+ drv->last_sect = last_sect;
+ drv->ro = ro;
} else {
- drv->disk = FDRIVE_DISK_NONE;
- drv->last_sect = 1; /* Avoid eventual divide by 0 bugs */
+ FLOPPY_DPRINTF("No disk in drive\n");
+ drv->last_sect = 0;
+ drv->max_track = 0;
+ drv->flags &= ~FDISK_DBL_SIDES;
}
- drv->ro = ro;
- drv->rv = 1;
-}
-
-/* Motor control */
-static void fd_start (fdrive_t *drv)
-{
- drv->motor = 1;
-}
-
-static void fd_stop (fdrive_t *drv)
-{
- drv->motor = 0;
-}
-
-/* Re-initialise a drives (motor off, repositioned) */
-static void fd_reset (fdrive_t *drv)
-{
- fd_stop(drv);
- fd_recalibrate(drv);
}
/********************************************************/
-/* Intel 82078 floppy disk controler emulation */
-
-static void fdctrl_reset (int do_irq);
-static void fdctrl_reset_fifo (void);
-static int fdctrl_transfer_handler (uint32_t addr, int size, int *irq);
-static int fdctrl_misc_handler (int duknwo);
-static void fdctrl_raise_irq (uint8_t status);
-
-static uint32_t fdctrl_read_statusB (CPUState *env, uint32_t reg);
-static uint32_t fdctrl_read_dor (CPUState *env, uint32_t reg);
-static void fdctrl_write_dor (CPUState *env, uint32_t reg, uint32_t value);
-static uint32_t fdctrl_read_tape (CPUState *env, uint32_t reg);
-static void fdctrl_write_tape (CPUState *env, uint32_t reg, uint32_t value);
-static uint32_t fdctrl_read_main_status (CPUState *env, uint32_t reg);
-static void fdctrl_write_rate (CPUState *env, uint32_t reg, uint32_t value);
-static uint32_t fdctrl_read_data (CPUState *env, uint32_t reg);
-static void fdctrl_write_data (CPUState *env, uint32_t reg, uint32_t value);
-static uint32_t fdctrl_read_dir (CPUState *env, uint32_t reg);
-
-enum {
- FD_CTRL_ACTIVE = 0x01,
- FD_CTRL_RESET = 0x02,
- FD_CTRL_SLEEP = 0x04,
- FD_CTRL_BUSY = 0x08,
- FD_CTRL_INTR = 0x10,
-};
+/* Intel 82078 floppy disk controller emulation */
+
+static void fdctrl_reset(FDCtrl *fdctrl, int do_irq);
+static void fdctrl_reset_fifo(FDCtrl *fdctrl);
+static int fdctrl_transfer_handler (void *opaque, int nchan,
+ int dma_pos, int dma_len);
+static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0);
+
+static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl);
+static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl);
+static uint32_t fdctrl_read_dor(FDCtrl *fdctrl);
+static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value);
+static uint32_t fdctrl_read_tape(FDCtrl *fdctrl);
+static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value);
+static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl);
+static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value);
+static uint32_t fdctrl_read_data(FDCtrl *fdctrl);
+static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value);
+static uint32_t fdctrl_read_dir(FDCtrl *fdctrl);
enum {
FD_DIR_WRITE = 0,
};
enum {
- FD_STATE_CMD = 0x00,
- FD_STATE_STATUS = 0x01,
- FD_STATE_DATA = 0x02,
- FD_STATE_STATE = 0x03,
- FD_STATE_MULTI = 0x10,
- FD_STATE_SEEK = 0x20,
+ FD_STATE_MULTI = 0x01, /* multi track flag */
+ FD_STATE_FORMAT = 0x02, /* format flag */
+ FD_STATE_SEEK = 0x04, /* seek flag */
+};
+
+enum {
+ FD_REG_SRA = 0x00,
+ FD_REG_SRB = 0x01,
+ FD_REG_DOR = 0x02,
+ FD_REG_TDR = 0x03,
+ FD_REG_MSR = 0x04,
+ FD_REG_DSR = 0x04,
+ FD_REG_FIFO = 0x05,
+ FD_REG_DIR = 0x07,
+};
+
+enum {
+ FD_CMD_READ_TRACK = 0x02,
+ FD_CMD_SPECIFY = 0x03,
+ FD_CMD_SENSE_DRIVE_STATUS = 0x04,
+ FD_CMD_WRITE = 0x05,
+ FD_CMD_READ = 0x06,
+ FD_CMD_RECALIBRATE = 0x07,
+ FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
+ FD_CMD_WRITE_DELETED = 0x09,
+ FD_CMD_READ_ID = 0x0a,
+ FD_CMD_READ_DELETED = 0x0c,
+ FD_CMD_FORMAT_TRACK = 0x0d,
+ FD_CMD_DUMPREG = 0x0e,
+ FD_CMD_SEEK = 0x0f,
+ FD_CMD_VERSION = 0x10,
+ FD_CMD_SCAN_EQUAL = 0x11,
+ FD_CMD_PERPENDICULAR_MODE = 0x12,
+ FD_CMD_CONFIGURE = 0x13,
+ FD_CMD_LOCK = 0x14,
+ FD_CMD_VERIFY = 0x16,
+ FD_CMD_POWERDOWN_MODE = 0x17,
+ FD_CMD_PART_ID = 0x18,
+ FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
+ FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
+ FD_CMD_SAVE = 0x2c,
+ FD_CMD_OPTION = 0x33,
+ FD_CMD_RESTORE = 0x4c,
+ FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
+ FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
+ FD_CMD_FORMAT_AND_WRITE = 0xcd,
+ FD_CMD_RELATIVE_SEEK_IN = 0xcf,
+};
+
+enum {
+ FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
+ FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
+ FD_CONFIG_POLL = 0x10, /* Poll enabled */
+ FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
+ FD_CONFIG_EIS = 0x40, /* No implied seeks */
+};
+
+enum {
+ FD_SR0_EQPMT = 0x10,
+ FD_SR0_SEEK = 0x20,
+ FD_SR0_ABNTERM = 0x40,
+ FD_SR0_INVCMD = 0x80,
+ FD_SR0_RDYCHG = 0xc0,
+};
+
+enum {
+ FD_SR1_EC = 0x80, /* End of cylinder */
+};
+
+enum {
+ FD_SR2_SNS = 0x04, /* Scan not satisfied */
+ FD_SR2_SEH = 0x08, /* Scan equal hit */
+};
+
+enum {
+ FD_SRA_DIR = 0x01,
+ FD_SRA_nWP = 0x02,
+ FD_SRA_nINDX = 0x04,
+ FD_SRA_HDSEL = 0x08,
+ FD_SRA_nTRK0 = 0x10,
+ FD_SRA_STEP = 0x20,
+ FD_SRA_nDRV2 = 0x40,
+ FD_SRA_INTPEND = 0x80,
+};
+
+enum {
+ FD_SRB_MTR0 = 0x01,
+ FD_SRB_MTR1 = 0x02,
+ FD_SRB_WGATE = 0x04,
+ FD_SRB_RDATA = 0x08,
+ FD_SRB_WDATA = 0x10,
+ FD_SRB_DR0 = 0x20,
+};
+
+enum {
+#if MAX_FD == 4
+ FD_DOR_SELMASK = 0x03,
+#else
+ FD_DOR_SELMASK = 0x01,
+#endif
+ FD_DOR_nRESET = 0x04,
+ FD_DOR_DMAEN = 0x08,
+ FD_DOR_MOTEN0 = 0x10,
+ FD_DOR_MOTEN1 = 0x20,
+ FD_DOR_MOTEN2 = 0x40,
+ FD_DOR_MOTEN3 = 0x80,
+};
+
+enum {
+#if MAX_FD == 4
+ FD_TDR_BOOTSEL = 0x0c,
+#else
+ FD_TDR_BOOTSEL = 0x04,
+#endif
+};
+
+enum {
+ FD_DSR_DRATEMASK= 0x03,
+ FD_DSR_PWRDOWN = 0x40,
+ FD_DSR_SWRESET = 0x80,
+};
+
+enum {
+ FD_MSR_DRV0BUSY = 0x01,
+ FD_MSR_DRV1BUSY = 0x02,
+ FD_MSR_DRV2BUSY = 0x04,
+ FD_MSR_DRV3BUSY = 0x08,
+ FD_MSR_CMDBUSY = 0x10,
+ FD_MSR_NONDMA = 0x20,
+ FD_MSR_DIO = 0x40,
+ FD_MSR_RQM = 0x80,
+};
+
+enum {
+ FD_DIR_DSKCHG = 0x80,
};
-#define FD_STATE(state) ((state) & FD_STATE_STATE)
#define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
#define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
+#define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
-typedef struct fdctrl_t {
- /* Controler's identification */
+struct FDCtrl {
+ /* Controller's identification */
uint8_t version;
/* HW */
- int irq_lvl;
+ qemu_irq irq;
int dma_chann;
- /* Controler state */
- uint8_t state;
- uint8_t dma_en;
+ /* Controller state */
+ QEMUTimer *result_timer;
+ 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 bootsel;
+ uint8_t status0;
+ uint8_t status1;
+ uint8_t status2;
/* Command FIFO */
- uint8_t fifo[FD_SECTOR_LEN];
+ 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 int_status;
+ uint8_t eot; /* last wanted sector */
/* States kept only to be returned back */
/* Timers state */
uint8_t timer0;
uint8_t lock;
/* Power down config (also with status regB access mode */
uint8_t pwrd;
+ /* Sun4m quirks? */
+ int sun4m;
/* Floppy drives */
- fdrive_t drives[2];
-} fdctrl_t;
+ uint8_t num_floppies;
+ FDrive drives[MAX_FD];
+ int reset_sensei;
+};
-static fdctrl_t fdctrl;
+typedef struct FDCtrlSysBus {
+ SysBusDevice busdev;
+ struct FDCtrl state;
+} FDCtrlSysBus;
-void fdctrl_init (int irq_lvl, int dma_chann, int mem_mapped, uint32_t base,
- char boot_device)
+typedef struct FDCtrlISABus {
+ ISADevice busdev;
+ struct FDCtrl state;
+} FDCtrlISABus;
+
+static uint32_t fdctrl_read (void *opaque, uint32_t reg)
{
-// int io_mem;
- int i;
+ FDCtrl *fdctrl = opaque;
+ uint32_t retval;
- FLOPPY_DPRINTF("init controler\n");
- memset(&fdctrl, 0, sizeof(fdctrl));
- fdctrl.version = 0x90; /* Intel 82078 controler */
- fdctrl.irq_lvl = irq_lvl;
- fdctrl.dma_chann = dma_chann;
- fdctrl.config = 0x40; /* Implicit seek, polling & FIFO enabled */
- if (fdctrl.dma_chann != -1) {
- fdctrl.dma_en = 1;
- DMA_register_channel(dma_chann, &fdctrl_transfer_handler,
- &fdctrl_misc_handler);
- } else {
- fdctrl.dma_en = 0;
+ switch (reg) {
+ case FD_REG_SRA:
+ retval = fdctrl_read_statusA(fdctrl);
+ break;
+ case FD_REG_SRB:
+ retval = fdctrl_read_statusB(fdctrl);
+ break;
+ case FD_REG_DOR:
+ retval = fdctrl_read_dor(fdctrl);
+ break;
+ case FD_REG_TDR:
+ retval = fdctrl_read_tape(fdctrl);
+ break;
+ case FD_REG_MSR:
+ retval = fdctrl_read_main_status(fdctrl);
+ break;
+ case FD_REG_FIFO:
+ retval = fdctrl_read_data(fdctrl);
+ break;
+ case FD_REG_DIR:
+ retval = fdctrl_read_dir(fdctrl);
+ break;
+ default:
+ retval = (uint32_t)(-1);
+ break;
}
- for (i = 0; i < MAX_FD; i++)
- fd_init(&fdctrl.drives[i]);
- fdctrl_reset(0);
- fdctrl.state = FD_CTRL_ACTIVE;
- if (mem_mapped) {
- FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
-#if 0
- io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
- cpu_register_physical_memory(base, 0x08, io_mem);
-#endif
- } else {
- register_ioport_read(base + 0x01, 1, fdctrl_read_statusB, 1);
- register_ioport_read(base + 0x02, 1, fdctrl_read_dor, 1);
- register_ioport_write(base + 0x02, 1, fdctrl_write_dor, 1);
- register_ioport_read(base + 0x03, 1, fdctrl_read_tape, 1);
- register_ioport_write(base + 0x03, 1, fdctrl_write_tape, 1);
- register_ioport_read(base + 0x04, 1, fdctrl_read_main_status, 1);
- register_ioport_write(base + 0x04, 1, fdctrl_write_rate, 1);
- register_ioport_read(base + 0x05, 1, fdctrl_read_data, 1);
- register_ioport_write(base + 0x05, 1, fdctrl_write_data, 1);
- register_ioport_read(base + 0x07, 1, fdctrl_read_dir, 1);
+ FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
+
+ return retval;
+}
+
+static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
+{
+ FDCtrl *fdctrl = opaque;
+
+ FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
+
+ switch (reg) {
+ case FD_REG_DOR:
+ fdctrl_write_dor(fdctrl, value);
+ break;
+ case FD_REG_TDR:
+ fdctrl_write_tape(fdctrl, value);
+ break;
+ case FD_REG_DSR:
+ fdctrl_write_rate(fdctrl, value);
+ break;
+ case FD_REG_FIFO:
+ fdctrl_write_data(fdctrl, value);
+ break;
+ default:
+ break;
}
- if (boot_device == 'b')
- fdctrl.bootsel = 1;
- else
- fdctrl.bootsel = 0;
-#if defined (TARGET_I386)
- cmos_register_fd(fdctrl.drives[0].drive, fdctrl.drives[1].drive);
-#endif
}
-int fdctrl_disk_change (int idx, const unsigned char *filename, int ro)
+static uint32_t fdctrl_read_port (void *opaque, uint32_t reg)
+{
+ return fdctrl_read(opaque, reg & 7);
+}
+
+static void fdctrl_write_port (void *opaque, uint32_t reg, uint32_t value)
+{
+ fdctrl_write(opaque, reg & 7, value);
+}
+
+static uint32_t fdctrl_read_mem (void *opaque, target_phys_addr_t reg)
+{
+ return fdctrl_read(opaque, (uint32_t)reg);
+}
+
+static void fdctrl_write_mem (void *opaque,
+ target_phys_addr_t reg, uint32_t value)
{
- fdrive_t *drv;
-
- if (idx < 0 || idx > 1)
- return -1;
- FLOPPY_DPRINTF("disk %d change: %s (%s)\n", idx, filename,
- ro == 0 ? "rw" : "ro");
- drv = &fdctrl.drives[idx];
- if (fd_table[idx] != NULL) {
- bdrv_close(fd_table[idx]);
- fd_table[idx] = NULL;
+ fdctrl_write(opaque, (uint32_t)reg, value);
+}
+
+static CPUReadMemoryFunc * const fdctrl_mem_read[3] = {
+ fdctrl_read_mem,
+ fdctrl_read_mem,
+ fdctrl_read_mem,
+};
+
+static CPUWriteMemoryFunc * const fdctrl_mem_write[3] = {
+ fdctrl_write_mem,
+ fdctrl_write_mem,
+ fdctrl_write_mem,
+};
+
+static CPUReadMemoryFunc * const fdctrl_mem_read_strict[3] = {
+ fdctrl_read_mem,
+ NULL,
+ NULL,
+};
+
+static CPUWriteMemoryFunc * const fdctrl_mem_write_strict[3] = {
+ fdctrl_write_mem,
+ NULL,
+ NULL,
+};
+
+static const VMStateDescription vmstate_fdrive = {
+ .name = "fdrive",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT8(head, FDrive),
+ VMSTATE_UINT8(track, FDrive),
+ VMSTATE_UINT8(sect, FDrive),
+ VMSTATE_END_OF_LIST()
}
- fd_table[idx] = bdrv_open(filename, ro);
- drv->bs = fd_table[idx];
- if (fd_table[idx] == NULL)
- return -1;
- fd_revalidate(drv, ro);
-#if 0
- fd_recalibrate(drv);
- fdctrl_reset_fifo();
- fdctrl_raise_irq(0x20);
-#endif
+};
+
+static void fdc_pre_save(void *opaque)
+{
+ FDCtrl *s = opaque;
+
+ s->dor_vmstate = s->dor | GET_CUR_DRV(s);
+}
+
+static int fdc_post_load(void *opaque, int version_id)
+{
+ FDCtrl *s = opaque;
+ SET_CUR_DRV(s, s->dor_vmstate & FD_DOR_SELMASK);
+ s->dor = s->dor_vmstate & ~FD_DOR_SELMASK;
return 0;
}
-/* Change IRQ state */
-static void fdctrl_reset_irq (void)
+static const VMStateDescription vmstate_fdc = {
+ .name = "fdc",
+ .version_id = 2,
+ .minimum_version_id = 2,
+ .minimum_version_id_old = 2,
+ .pre_save = fdc_pre_save,
+ .post_load = fdc_post_load,
+ .fields = (VMStateField []) {
+ /* Controller State */
+ VMSTATE_UINT8(sra, FDCtrl),
+ VMSTATE_UINT8(srb, FDCtrl),
+ VMSTATE_UINT8(dor_vmstate, FDCtrl),
+ VMSTATE_UINT8(tdr, FDCtrl),
+ VMSTATE_UINT8(dsr, FDCtrl),
+ VMSTATE_UINT8(msr, FDCtrl),
+ VMSTATE_UINT8(status0, FDCtrl),
+ VMSTATE_UINT8(status1, FDCtrl),
+ VMSTATE_UINT8(status2, FDCtrl),
+ /* Command FIFO */
+ VMSTATE_VARRAY_INT32(fifo, FDCtrl, fifo_size, 0, vmstate_info_uint8,
+ uint8_t),
+ VMSTATE_UINT32(data_pos, FDCtrl),
+ VMSTATE_UINT32(data_len, FDCtrl),
+ VMSTATE_UINT8(data_state, FDCtrl),
+ VMSTATE_UINT8(data_dir, FDCtrl),
+ VMSTATE_UINT8(eot, FDCtrl),
+ /* States kept only to be returned back */
+ VMSTATE_UINT8(timer0, FDCtrl),
+ VMSTATE_UINT8(timer1, FDCtrl),
+ VMSTATE_UINT8(precomp_trk, FDCtrl),
+ VMSTATE_UINT8(config, FDCtrl),
+ VMSTATE_UINT8(lock, FDCtrl),
+ VMSTATE_UINT8(pwrd, FDCtrl),
+ VMSTATE_UINT8_EQUAL(num_floppies, FDCtrl),
+ VMSTATE_STRUCT_ARRAY(drives, FDCtrl, MAX_FD, 1,
+ vmstate_fdrive, FDrive),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void fdctrl_external_reset_sysbus(DeviceState *d)
+{
+ FDCtrlSysBus *sys = container_of(d, FDCtrlSysBus, busdev.qdev);
+ FDCtrl *s = &sys->state;
+
+ fdctrl_reset(s, 0);
+}
+
+static void fdctrl_external_reset_isa(DeviceState *d)
+{
+ FDCtrlISABus *isa = container_of(d, FDCtrlISABus, busdev.qdev);
+ FDCtrl *s = &isa->state;
+
+ fdctrl_reset(s, 0);
+}
+
+static void fdctrl_handle_tc(void *opaque, int irq, int level)
{
- if (fdctrl.state & FD_CTRL_INTR) {
- pic_set_irq(fdctrl.irq_lvl, 0);
- fdctrl.state &= ~(FD_CTRL_INTR | FD_CTRL_SLEEP | FD_CTRL_BUSY);
+ //FDCtrl *s = opaque;
+
+ if (level) {
+ // XXX
+ FLOPPY_DPRINTF("TC pulsed\n");
}
}
-static void fdctrl_raise_irq (uint8_t status)
+/* XXX: may change if moved to bdrv */
+int fdctrl_get_drive_type(FDCtrl *fdctrl, int drive_num)
+{
+ return fdctrl->drives[drive_num].drive;
+}
+
+/* Change IRQ state */
+static void fdctrl_reset_irq(FDCtrl *fdctrl)
+{
+ if (!(fdctrl->sra & FD_SRA_INTPEND))
+ return;
+ FLOPPY_DPRINTF("Reset interrupt\n");
+ qemu_set_irq(fdctrl->irq, 0);
+ fdctrl->sra &= ~FD_SRA_INTPEND;
+}
+
+static void fdctrl_raise_irq(FDCtrl *fdctrl, uint8_t status0)
{
- if (~(fdctrl.state & FD_CTRL_INTR)) {
- pic_set_irq(fdctrl.irq_lvl, 1);
- fdctrl.state |= FD_CTRL_INTR;
+ /* Sparc mutation */
+ if (fdctrl->sun4m && (fdctrl->msr & FD_MSR_CMDBUSY)) {
+ /* XXX: not sure */
+ fdctrl->msr &= ~FD_MSR_CMDBUSY;
+ fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
+ fdctrl->status0 = status0;
+ return;
+ }
+ if (!(fdctrl->sra & FD_SRA_INTPEND)) {
+ qemu_set_irq(fdctrl->irq, 1);
+ fdctrl->sra |= FD_SRA_INTPEND;
}
- FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status);
- fdctrl.int_status = status;
+ fdctrl->reset_sensei = 0;
+ fdctrl->status0 = status0;
+ FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", fdctrl->status0);
}
-/* Reset controler */
-static void fdctrl_reset (int do_irq)
+/* Reset controller */
+static void fdctrl_reset(FDCtrl *fdctrl, int do_irq)
{
int i;
- FLOPPY_DPRINTF("reset controler\n");
- fdctrl_reset_irq();
- /* Initialise controler */
- fdctrl.cur_drv = 0;
+ FLOPPY_DPRINTF("reset controller\n");
+ fdctrl_reset_irq(fdctrl);
+ /* Initialise controller */
+ fdctrl->sra = 0;
+ fdctrl->srb = 0xc0;
+ if (!fdctrl->drives[1].bs)
+ fdctrl->sra |= FD_SRA_nDRV2;
+ fdctrl->cur_drv = 0;
+ fdctrl->dor = FD_DOR_nRESET;
+ fdctrl->dor |= (fdctrl->dma_chann != -1) ? FD_DOR_DMAEN : 0;
+ fdctrl->msr = FD_MSR_RQM;
/* FIFO state */
- fdctrl.data_pos = 0;
- fdctrl.data_len = 0;
- fdctrl.data_state = FD_STATE_CMD;
- fdctrl.data_dir = FD_DIR_WRITE;
+ fdctrl->data_pos = 0;
+ fdctrl->data_len = 0;
+ fdctrl->data_state = 0;
+ fdctrl->data_dir = FD_DIR_WRITE;
for (i = 0; i < MAX_FD; i++)
- fd_reset(&fdctrl.drives[i]);
- fdctrl_reset_fifo();
- if (do_irq)
- fdctrl_raise_irq(0x20);
+ fd_recalibrate(&fdctrl->drives[i]);
+ fdctrl_reset_fifo(fdctrl);
+ if (do_irq) {
+ fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
+ fdctrl->reset_sensei = FD_RESET_SENSEI_COUNT;
+ }
+}
+
+static inline FDrive *drv0(FDCtrl *fdctrl)
+{
+ return &fdctrl->drives[(fdctrl->tdr & FD_TDR_BOOTSEL) >> 2];
+}
+
+static inline FDrive *drv1(FDCtrl *fdctrl)
+{
+ if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (1 << 2))
+ return &fdctrl->drives[1];
+ else
+ return &fdctrl->drives[0];
+}
+
+#if MAX_FD == 4
+static inline FDrive *drv2(FDCtrl *fdctrl)
+{
+ if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (2 << 2))
+ return &fdctrl->drives[2];
+ else
+ return &fdctrl->drives[1];
+}
+
+static inline FDrive *drv3(FDCtrl *fdctrl)
+{
+ if ((fdctrl->tdr & FD_TDR_BOOTSEL) < (3 << 2))
+ return &fdctrl->drives[3];
+ else
+ return &fdctrl->drives[2];
+}
+#endif
+
+static FDrive *get_cur_drv(FDCtrl *fdctrl)
+{
+ switch (fdctrl->cur_drv) {
+ case 0: return drv0(fdctrl);
+ case 1: return drv1(fdctrl);
+#if MAX_FD == 4
+ case 2: return drv2(fdctrl);
+ case 3: return drv3(fdctrl);
+#endif
+ default: return NULL;
+ }
+}
+
+/* Status A register : 0x00 (read-only) */
+static uint32_t fdctrl_read_statusA(FDCtrl *fdctrl)
+{
+ uint32_t retval = fdctrl->sra;
+
+ FLOPPY_DPRINTF("status register A: 0x%02x\n", retval);
+
+ return retval;
}
/* Status B register : 0x01 (read-only) */
-static uint32_t fdctrl_read_statusB (CPUState *env, uint32_t reg)
+static uint32_t fdctrl_read_statusB(FDCtrl *fdctrl)
{
- fdctrl_reset_irq();
- FLOPPY_DPRINTF("status register: 0x00\n");
+ uint32_t retval = fdctrl->srb;
- return 0;
+ FLOPPY_DPRINTF("status register B: 0x%02x\n", retval);
+
+ return retval;
}
/* Digital output register : 0x02 */
-static uint32_t fdctrl_read_dor (CPUState *env, uint32_t reg)
+static uint32_t fdctrl_read_dor(FDCtrl *fdctrl)
{
- fdrive_t *cur_drv, *drv0, *drv1;
- uint32_t retval = 0;
+ uint32_t retval = fdctrl->dor;
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- /* Drive motors state indicators */
- retval |= drv1->motor << 5;
- retval |= drv0->motor << 4;
- /* DMA enable */
- retval |= fdctrl.dma_en << 3;
- /* Reset indicator */
- retval |= (fdctrl.state & FD_CTRL_RESET) == 0 ? 0x04 : 0;
/* Selected drive */
- retval |= fdctrl.cur_drv;
+ retval |= fdctrl->cur_drv;
FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
return retval;
}
-static void fdctrl_write_dor (CPUState *env, uint32_t reg, uint32_t value)
+static void fdctrl_write_dor(FDCtrl *fdctrl, uint32_t value)
{
- fdrive_t *drv0, *drv1;
-
- fdctrl_reset_irq();
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- /* Reset mode */
- if (fdctrl.state & FD_CTRL_RESET) {
- if (!(value & 0x04)) {
- FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
- return;
- }
- }
FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
- /* Drive motors state indicators */
- if (value & 0x20)
- fd_start(drv1);
+
+ /* Motors */
+ if (value & FD_DOR_MOTEN0)
+ fdctrl->srb |= FD_SRB_MTR0;
else
- fd_stop(drv1);
- if (value & 0x10)
- fd_start(drv0);
+ fdctrl->srb &= ~FD_SRB_MTR0;
+ if (value & FD_DOR_MOTEN1)
+ fdctrl->srb |= FD_SRB_MTR1;
else
- fd_stop(drv0);
- /* DMA enable */
-#if 0
- if (fdctrl.dma_chann != -1)
- fdctrl.dma_en = 1 - ((value >> 3) & 1);
-#endif
+ fdctrl->srb &= ~FD_SRB_MTR1;
+
+ /* Drive */
+ if (value & 1)
+ fdctrl->srb |= FD_SRB_DR0;
+ else
+ fdctrl->srb &= ~FD_SRB_DR0;
+
/* Reset */
- if (!(value & 0x04)) {
- if (!(fdctrl.state & FD_CTRL_RESET)) {
- FLOPPY_DPRINTF("controler enter RESET state\n");
- fdctrl.state |= FD_CTRL_RESET;
- fdctrl_reset(1);
+ if (!(value & FD_DOR_nRESET)) {
+ if (fdctrl->dor & FD_DOR_nRESET) {
+ FLOPPY_DPRINTF("controller enter RESET state\n");
}
} else {
- if (fdctrl.state & FD_CTRL_RESET) {
- FLOPPY_DPRINTF("controler out of RESET state\n");
- fdctrl.state &= ~(FD_CTRL_RESET | FD_CTRL_SLEEP);
+ if (!(fdctrl->dor & FD_DOR_nRESET)) {
+ FLOPPY_DPRINTF("controller out of RESET state\n");
+ fdctrl_reset(fdctrl, 1);
+ fdctrl->dsr &= ~FD_DSR_PWRDOWN;
}
}
/* Selected drive */
- fdctrl.cur_drv = value & 1;
+ fdctrl->cur_drv = value & FD_DOR_SELMASK;
+
+ fdctrl->dor = value;
}
/* Tape drive register : 0x03 */
-static uint32_t fdctrl_read_tape (CPUState *env, uint32_t reg)
+static uint32_t fdctrl_read_tape(FDCtrl *fdctrl)
{
- uint32_t retval = 0;
+ uint32_t retval = fdctrl->tdr;
- fdctrl_reset_irq();
- /* Disk boot selection indicator */
- retval |= fdctrl.bootsel << 2;
- /* Tape indicators: never allowed */
FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
return retval;
}
-static void fdctrl_write_tape (CPUState *env, uint32_t reg, uint32_t value)
+static void fdctrl_write_tape(FDCtrl *fdctrl, uint32_t value)
{
- fdctrl_reset_irq();
/* Reset mode */
- if (fdctrl.state & FD_CTRL_RESET) {
- FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
+ if (!(fdctrl->dor & FD_DOR_nRESET)) {
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
return;
}
FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
/* Disk boot selection indicator */
- fdctrl.bootsel = (value >> 2) & 1;
+ fdctrl->tdr = value & FD_TDR_BOOTSEL;
/* Tape indicators: never allow */
}
/* Main status register : 0x04 (read) */
-static uint32_t fdctrl_read_main_status (CPUState *env, uint32_t reg)
+static uint32_t fdctrl_read_main_status(FDCtrl *fdctrl)
{
- uint32_t retval = 0;
+ uint32_t retval = fdctrl->msr;
+
+ fdctrl->dsr &= ~FD_DSR_PWRDOWN;
+ fdctrl->dor |= FD_DOR_nRESET;
+
+ /* Sparc mutation */
+ if (fdctrl->sun4m) {
+ retval |= FD_MSR_DIO;
+ fdctrl_reset_irq(fdctrl);
+ };
- fdctrl_reset_irq();
- fdctrl.state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET);
- if (!(fdctrl.state & FD_CTRL_BUSY)) {
- /* Data transfer allowed */
- retval |= 0x80;
- /* Data transfer direction indicator */
- if (fdctrl.data_dir == FD_DIR_READ)
- retval |= 0x40;
- }
- /* Should handle 0x20 for SPECIFY command */
- /* Command busy indicator */
- if (FD_STATE(fdctrl.data_state) == FD_STATE_DATA ||
- FD_STATE(fdctrl.data_state) == FD_STATE_STATUS)
- retval |= 0x10;
FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
return retval;
}
/* Data select rate register : 0x04 (write) */
-static void fdctrl_write_rate (CPUState *env, uint32_t reg, uint32_t value)
+static void fdctrl_write_rate(FDCtrl *fdctrl, uint32_t value)
{
- fdctrl_reset_irq();
/* Reset mode */
- if (fdctrl.state & FD_CTRL_RESET) {
- if (reg != 0x2 || !(value & 0x04)) {
- FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
- return;
- }
+ if (!(fdctrl->dor & FD_DOR_nRESET)) {
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
+ return;
}
FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
/* Reset: autoclear */
- if (value & 0x80) {
- fdctrl.state |= FD_CTRL_RESET;
- fdctrl_reset(1);
- fdctrl.state &= ~FD_CTRL_RESET;
+ if (value & FD_DSR_SWRESET) {
+ fdctrl->dor &= ~FD_DOR_nRESET;
+ fdctrl_reset(fdctrl, 1);
+ fdctrl->dor |= FD_DOR_nRESET;
}
- if (value & 0x40) {
- fdctrl.state |= FD_CTRL_SLEEP;
- fdctrl_reset(1);
+ if (value & FD_DSR_PWRDOWN) {
+ fdctrl_reset(fdctrl, 1);
+ }
+ fdctrl->dsr = value;
+}
+
+static int fdctrl_media_changed(FDrive *drv)
+{
+ int ret;
+
+ if (!drv->bs)
+ return 0;
+ ret = bdrv_media_changed(drv->bs);
+ if (ret) {
+ fd_revalidate(drv);
}
-// fdctrl.precomp = (value >> 2) & 0x07;
+ return ret;
}
/* Digital input register : 0x07 (read-only) */
-static uint32_t fdctrl_read_dir (CPUState *env, uint32_t reg)
+static uint32_t fdctrl_read_dir(FDCtrl *fdctrl)
{
- fdrive_t *drv0, *drv1;
uint32_t retval = 0;
- fdctrl_reset_irq();
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- if (drv0->rv || drv1->rv)
- retval |= 0x80;
+ if (fdctrl_media_changed(drv0(fdctrl))
+ || fdctrl_media_changed(drv1(fdctrl))
+#if MAX_FD == 4
+ || fdctrl_media_changed(drv2(fdctrl))
+ || fdctrl_media_changed(drv3(fdctrl))
+#endif
+ )
+ retval |= FD_DIR_DSKCHG;
if (retval != 0)
- FLOPPY_ERROR("Floppy digital input register: 0x%02x\n", retval);
- drv0->rv = 0;
- drv1->rv = 0;
+ FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
return retval;
}
/* FIFO state control */
-static void fdctrl_reset_fifo (void)
+static void fdctrl_reset_fifo(FDCtrl *fdctrl)
{
- fdctrl.data_dir = FD_DIR_WRITE;
- fdctrl.data_pos = 0;
- fdctrl.data_state = FD_STATE_CMD;
+ fdctrl->data_dir = FD_DIR_WRITE;
+ fdctrl->data_pos = 0;
+ fdctrl->msr &= ~(FD_MSR_CMDBUSY | FD_MSR_DIO);
}
/* Set FIFO status for the host to read */
-static void fdctrl_set_fifo (int fifo_len, int do_irq)
+static void fdctrl_set_fifo(FDCtrl *fdctrl, int fifo_len, int do_irq)
{
- fdctrl.data_dir = FD_DIR_READ;
- fdctrl.data_len = fifo_len;
- fdctrl.data_pos = 0;
- fdctrl.data_state = FD_STATE_STATUS;
+ fdctrl->data_dir = FD_DIR_READ;
+ fdctrl->data_len = fifo_len;
+ fdctrl->data_pos = 0;
+ fdctrl->msr |= FD_MSR_CMDBUSY | FD_MSR_RQM | FD_MSR_DIO;
if (do_irq)
- fdctrl_raise_irq(0x00);
+ fdctrl_raise_irq(fdctrl, 0x00);
}
/* Set an error: unimplemented/unknown command */
-static void fdctrl_unimplemented (void)
+static void fdctrl_unimplemented(FDCtrl *fdctrl, int direction)
{
-#if 0
- fdrive_t *cur_drv, *drv0, *drv1;
-
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- fdctrl.fifo[0] = 0x60 | (cur_drv->head << 1) | fdctrl.cur_drv;
- fdctrl.fifo[1] = 0x00;
- fdctrl.fifo[2] = 0x00;
- fdctrl_set_fifo(3, 1);
-#else
- fdctrl_reset_fifo();
-#endif
+ FLOPPY_ERROR("unimplemented command 0x%02x\n", fdctrl->fifo[0]);
+ fdctrl->fifo[0] = FD_SR0_INVCMD;
+ fdctrl_set_fifo(fdctrl, 1, 0);
+}
+
+/* Seek to next sector */
+static int fdctrl_seek_to_next_sect(FDCtrl *fdctrl, FDrive *cur_drv)
+{
+ FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
+ cur_drv->head, cur_drv->track, cur_drv->sect,
+ fd_sector(cur_drv));
+ /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
+ error in fact */
+ if (cur_drv->sect >= cur_drv->last_sect ||
+ cur_drv->sect == fdctrl->eot) {
+ cur_drv->sect = 1;
+ if (FD_MULTI_TRACK(fdctrl->data_state)) {
+ if (cur_drv->head == 0 &&
+ (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
+ cur_drv->head = 1;
+ } else {
+ cur_drv->head = 0;
+ cur_drv->track++;
+ if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
+ return 0;
+ }
+ } else {
+ cur_drv->track++;
+ return 0;
+ }
+ FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
+ cur_drv->head, cur_drv->track,
+ cur_drv->sect, fd_sector(cur_drv));
+ } else {
+ cur_drv->sect++;
+ }
+ return 1;
}
/* Callback for transfer end (stop or abort) */
-static void fdctrl_stop_transfer (uint8_t status0, uint8_t status1,
- uint8_t status2)
+static void fdctrl_stop_transfer(FDCtrl *fdctrl, uint8_t status0,
+ uint8_t status1, uint8_t status2)
{
- fdrive_t *cur_drv, *drv0, *drv1;
+ FDrive *cur_drv;
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
+ cur_drv = get_cur_drv(fdctrl);
FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
status0, status1, status2,
- status0 | (cur_drv->head << 1) | fdctrl.cur_drv);
- fdctrl.fifo[0] = status0 | (cur_drv->head << 1) | fdctrl.cur_drv;
- fdctrl.fifo[1] = status1;
- fdctrl.fifo[2] = status2;
- fdctrl.fifo[3] = cur_drv->track;
- fdctrl.fifo[4] = cur_drv->head;
- fdctrl.fifo[5] = cur_drv->sect;
- fdctrl.fifo[6] = FD_SECTOR_SC;
- fdctrl.data_dir = FD_DIR_READ;
- if (fdctrl.state & FD_CTRL_BUSY)
- DMA_release_DREQ(fdctrl.dma_chann);
- fdctrl_set_fifo(7, 1);
+ status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
+ fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
+ fdctrl->fifo[1] = status1;
+ fdctrl->fifo[2] = status2;
+ fdctrl->fifo[3] = cur_drv->track;
+ fdctrl->fifo[4] = cur_drv->head;
+ fdctrl->fifo[5] = cur_drv->sect;
+ fdctrl->fifo[6] = FD_SECTOR_SC;
+ fdctrl->data_dir = FD_DIR_READ;
+ if (!(fdctrl->msr & FD_MSR_NONDMA)) {
+ DMA_release_DREQ(fdctrl->dma_chann);
+ }
+ fdctrl->msr |= FD_MSR_RQM | FD_MSR_DIO;
+ fdctrl->msr &= ~FD_MSR_NONDMA;
+ fdctrl_set_fifo(fdctrl, 7, 1);
}
/* Prepare a data transfer (either DMA or FIFO) */
-static void fdctrl_start_transfer (int direction)
+static void fdctrl_start_transfer(FDCtrl *fdctrl, int direction)
{
- fdrive_t *cur_drv, *drv0, *drv1;
+ FDrive *cur_drv;
uint8_t kh, kt, ks;
- int did_seek;
-
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- fdctrl.cur_drv = fdctrl.fifo[1] & 1;
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- kt = fdctrl.fifo[2];
- kh = fdctrl.fifo[3];
- ks = fdctrl.fifo[4];
- FLOPPY_DPRINTF("Start tranfert at %d %d %02x %02x (%d)\n",
- fdctrl.cur_drv, kh, kt, ks,
- _fd_sector(kh, kt, ks, cur_drv->last_sect));
- did_seek = 0;
- switch (fd_seek(cur_drv, kh, kt, ks, fdctrl.config & 0x40)) {
+ int did_seek = 0;
+
+ SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
+ cur_drv = get_cur_drv(fdctrl);
+ kt = fdctrl->fifo[2];
+ kh = fdctrl->fifo[3];
+ ks = fdctrl->fifo[4];
+ FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
+ GET_CUR_DRV(fdctrl), kh, kt, ks,
+ fd_sector_calc(kh, kt, ks, cur_drv->last_sect));
+ switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
case 2:
/* sect too big */
- fdctrl_stop_transfer(0x40, 0x00, 0x00);
- fdctrl.fifo[3] = kt;
- fdctrl.fifo[4] = kh;
- fdctrl.fifo[5] = ks;
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
+ fdctrl->fifo[3] = kt;
+ fdctrl->fifo[4] = kh;
+ fdctrl->fifo[5] = ks;
return;
case 3:
/* track too big */
- fdctrl_stop_transfer(0x40, 0x80, 0x00);
- fdctrl.fifo[3] = kt;
- fdctrl.fifo[4] = kh;
- fdctrl.fifo[5] = ks;
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
+ fdctrl->fifo[3] = kt;
+ fdctrl->fifo[4] = kh;
+ fdctrl->fifo[5] = ks;
return;
case 4:
/* No seek enabled */
- fdctrl_stop_transfer(0x40, 0x00, 0x00);
- fdctrl.fifo[3] = kt;
- fdctrl.fifo[4] = kh;
- fdctrl.fifo[5] = ks;
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
+ fdctrl->fifo[3] = kt;
+ fdctrl->fifo[4] = kh;
+ fdctrl->fifo[5] = ks;
return;
case 1:
did_seek = 1;
default:
break;
}
+
/* Set the FIFO state */
- fdctrl.data_dir = direction;
- fdctrl.data_pos = 0;
- fdctrl.data_state = FD_STATE_DATA; /* FIFO ready for data */
- if (fdctrl.fifo[0] & 0x80)
- fdctrl.data_state |= FD_STATE_MULTI;
+ fdctrl->data_dir = direction;
+ fdctrl->data_pos = 0;
+ fdctrl->msr |= FD_MSR_CMDBUSY;
+ if (fdctrl->fifo[0] & 0x80)
+ fdctrl->data_state |= FD_STATE_MULTI;
+ else
+ fdctrl->data_state &= ~FD_STATE_MULTI;
if (did_seek)
- fdctrl.data_state |= FD_STATE_SEEK;
- if (fdctrl.dma_en) {
+ fdctrl->data_state |= FD_STATE_SEEK;
+ else
+ fdctrl->data_state &= ~FD_STATE_SEEK;
+ if (fdctrl->fifo[5] == 00) {
+ fdctrl->data_len = fdctrl->fifo[8];
+ } else {
+ int tmp;
+ fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
+ tmp = (fdctrl->fifo[6] - ks + 1);
+ if (fdctrl->fifo[0] & 0x80)
+ tmp += fdctrl->fifo[6];
+ fdctrl->data_len *= tmp;
+ }
+ fdctrl->eot = fdctrl->fifo[6];
+ if (fdctrl->dor & FD_DOR_DMAEN) {
int dma_mode;
/* DMA transfer are enabled. Check if DMA channel is well programmed */
- dma_mode = DMA_get_channel_mode(fdctrl.dma_chann);
+ dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
dma_mode = (dma_mode >> 2) & 3;
- FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d)\n", dma_mode, direction,
- (128 << fdctrl.fifo[5]) *
- (cur_drv->last_sect - ks + 1));
+ FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
+ dma_mode, direction,
+ (128 << fdctrl->fifo[5]) *
+ (cur_drv->last_sect - ks + 1), fdctrl->data_len);
if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
direction == FD_DIR_SCANH) && dma_mode == 0) ||
(direction == FD_DIR_WRITE && dma_mode == 2) ||
(direction == FD_DIR_READ && dma_mode == 1)) {
/* No access is allowed until DMA transfer has completed */
- fdctrl.state |= FD_CTRL_BUSY;
- /* Now, we just have to wait for the DMA controler to
+ fdctrl->msr &= ~FD_MSR_RQM;
+ /* Now, we just have to wait for the DMA controller to
* recall us...
*/
- DMA_hold_DREQ(fdctrl.dma_chann);
+ DMA_hold_DREQ(fdctrl->dma_chann);
+ DMA_schedule(fdctrl->dma_chann);
return;
+ } else {
+ FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
}
}
FLOPPY_DPRINTF("start non-DMA transfer\n");
+ fdctrl->msr |= FD_MSR_NONDMA;
+ if (direction != FD_DIR_WRITE)
+ fdctrl->msr |= FD_MSR_DIO;
/* IO based transfer: calculate len */
- if (fdctrl.fifo[5] == 00) {
- fdctrl.data_len = fdctrl.fifo[8];
- } else {
- fdctrl.data_len = 128 << fdctrl.fifo[5];
- fdctrl.data_len *= (cur_drv->last_sect - ks + 1);
- if (fdctrl.fifo[0] & 0x80)
- fdctrl.data_len *= 2;
- }
- fdctrl_raise_irq(0x00);
+ fdctrl_raise_irq(fdctrl, 0x00);
return;
}
/* Prepare a transfer of deleted data */
-static void fdctrl_start_transfer_del (int direction)
+static void fdctrl_start_transfer_del(FDCtrl *fdctrl, int direction)
{
+ FLOPPY_ERROR("fdctrl_start_transfer_del() unimplemented\n");
+
/* We don't handle deleted data,
* so we don't return *ANYTHING*
*/
- fdctrl_stop_transfer(0x60, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
}
/* handlers for DMA transfers */
-static int fdctrl_transfer_handler (uint32_t addr, int size, int *irq)
+static int fdctrl_transfer_handler (void *opaque, int nchan,
+ int dma_pos, int dma_len)
{
- fdrive_t *cur_drv, *drv0, *drv1;
- void *orig;
- int len;
+ FDCtrl *fdctrl;
+ FDrive *cur_drv;
+ int len, start_pos, rel_pos;
uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
- fdctrl_reset_irq();
- if (!(fdctrl.state & FD_CTRL_BUSY)) {
+ fdctrl = opaque;
+ if (fdctrl->msr & FD_MSR_RQM) {
FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
return 0;
}
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
-// *irq = fdctrl.irq_lvl;
- *irq = -1;
- if (fdctrl.data_dir == FD_DIR_SCANE || fdctrl.data_dir == FD_DIR_SCANL ||
- fdctrl.data_dir == FD_DIR_SCANH)
- status2 = 0x04;
- for (fdctrl.data_len = size; fdctrl.data_pos < fdctrl.data_len;
- fdctrl.data_pos += len) {
- len = size - fdctrl.data_pos;
- if (len > FD_SECTOR_LEN)
- len = FD_SECTOR_LEN;
- FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x %02x "
- "(%d-0x%08x)\n", len, size, fdctrl.data_pos,
- fdctrl.data_len, fdctrl.cur_drv, cur_drv->head,
+ cur_drv = get_cur_drv(fdctrl);
+ if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
+ fdctrl->data_dir == FD_DIR_SCANH)
+ status2 = FD_SR2_SNS;
+ if (dma_len > fdctrl->data_len)
+ dma_len = fdctrl->data_len;
+ if (cur_drv->bs == NULL) {
+ if (fdctrl->data_dir == FD_DIR_WRITE)
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
+ else
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
+ len = 0;
+ goto transfer_error;
+ }
+ rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
+ for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
+ len = dma_len - fdctrl->data_pos;
+ if (len + rel_pos > FD_SECTOR_LEN)
+ len = FD_SECTOR_LEN - rel_pos;
+ FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
+ "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
+ fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
- fd_sector(cur_drv) * 512);
- if (len < FD_SECTOR_LEN) {
- memset(&fdctrl.fifo[FD_SECTOR_LEN - len], 0,
- FD_SECTOR_LEN - len - 1);
- orig = fdctrl.fifo;
- } else {
- orig = (void *)(addr + fdctrl.data_pos);
- }
- if (fdctrl.data_dir != FD_DIR_WRITE) {
- /* READ & SCAN commands */
- if (cur_drv->bs == NULL) {
- fdctrl_stop_transfer(0x40, 0x00, 0x00);
- goto transfer_error;
- }
-
- if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), orig, 1) < 0) {
+ fd_sector(cur_drv) * FD_SECTOR_LEN);
+ if (fdctrl->data_dir != FD_DIR_WRITE ||
+ len < FD_SECTOR_LEN || rel_pos != 0) {
+ /* READ & SCAN commands and realign to a sector for WRITE */
+ if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
+ fdctrl->fifo, 1) < 0) {
FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
fd_sector(cur_drv));
/* Sure, image size is too small... */
- memset((void *)(addr + fdctrl.data_pos), 0, FD_SECTOR_LEN);
+ memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
}
- if (fdctrl.data_dir == FD_DIR_READ) {
- if (len < FD_SECTOR_LEN) {
- memcpy((void *)(addr + fdctrl.data_pos),
- fdctrl.fifo, FD_SECTOR_LEN);
- }
- } else {
+ }
+ switch (fdctrl->data_dir) {
+ case FD_DIR_READ:
+ /* READ commands */
+ DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
+ fdctrl->data_pos, len);
+ break;
+ case FD_DIR_WRITE:
+ /* WRITE commands */
+ DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
+ fdctrl->data_pos, len);
+ if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
+ fdctrl->fifo, 1) < 0) {
+ FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
+ goto transfer_error;
+ }
+ break;
+ default:
+ /* SCAN commands */
+ {
+ uint8_t tmpbuf[FD_SECTOR_LEN];
int ret;
- ret = memcmp((void *)(addr + fdctrl.data_pos),
- fdctrl.fifo, FD_SECTOR_LEN);
+ DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
+ ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
if (ret == 0) {
- status2 = 0x08;
+ status2 = FD_SR2_SEH;
goto end_transfer;
}
- if ((ret < 0 && fdctrl.data_dir == FD_DIR_SCANL) ||
- (ret > 0 && fdctrl.data_dir == FD_DIR_SCANH)) {
+ if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) ||
+ (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
status2 = 0x00;
goto end_transfer;
}
}
- } else {
- /* WRITE commands */
- if (cur_drv->bs == NULL ||
- bdrv_write(cur_drv->bs, fd_sector(cur_drv), orig, 1) < 0) {
- FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv));
- fdctrl_stop_transfer(0x60, 0x00, 0x00);
- goto transfer_error;
- }
+ break;
}
- if (len == FD_SECTOR_LEN) {
+ fdctrl->data_pos += len;
+ rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
+ if (rel_pos == 0) {
/* Seek to next sector */
- if (cur_drv->sect == cur_drv->last_sect) {
- if (cur_drv->head == 0) {
- cur_drv->head = 1;
- } else {
- cur_drv->track++;
- cur_drv->head = 0;
- }
- cur_drv->sect = 1;
- FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
- cur_drv->head, cur_drv->track, cur_drv->sect,
- fd_sector(cur_drv));
- if (cur_drv->head == 0) {
- FLOPPY_DPRINTF("end transfer\n");
- goto end_transfer;
- }
- if (!FD_MULTI_TRACK(fdctrl.data_state)) {
- /* Single track read */
- FLOPPY_DPRINTF("single track transfert: end transfer\n");
-// status1 |= 0x80;
- goto end_transfer;
- }
- } else {
- cur_drv->sect++;
- FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d)\n",
- cur_drv->head, cur_drv->track, cur_drv->sect,
- fd_sector(cur_drv));
- }
+ if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv))
+ break;
}
}
-end_transfer:
- if (fdctrl.data_dir == FD_DIR_SCANE ||
- fdctrl.data_dir == FD_DIR_SCANL ||
- fdctrl.data_dir == FD_DIR_SCANH)
- status2 = 0x08;
- if (FD_DID_SEEK(fdctrl.data_state))
- status0 |= 0x20;
- fdctrl_stop_transfer(status0, status1, status2);
-transfer_error:
-
- return fdctrl.data_pos;
-}
-
-/* Unused... */
-static int fdctrl_misc_handler (int duknwo)
-{
- return -1;
+ end_transfer:
+ len = fdctrl->data_pos - start_pos;
+ FLOPPY_DPRINTF("end transfer %d %d %d\n",
+ fdctrl->data_pos, len, fdctrl->data_len);
+ if (fdctrl->data_dir == FD_DIR_SCANE ||
+ fdctrl->data_dir == FD_DIR_SCANL ||
+ fdctrl->data_dir == FD_DIR_SCANH)
+ status2 = FD_SR2_SEH;
+ if (FD_DID_SEEK(fdctrl->data_state))
+ status0 |= FD_SR0_SEEK;
+ fdctrl->data_len -= len;
+ fdctrl_stop_transfer(fdctrl, status0, status1, status2);
+ transfer_error:
+
+ return len;
}
/* Data register : 0x05 */
-static uint32_t fdctrl_read_data (CPUState *env, uint32_t reg)
+static uint32_t fdctrl_read_data(FDCtrl *fdctrl)
{
- fdrive_t *cur_drv, *drv0, *drv1;
+ FDrive *cur_drv;
uint32_t retval = 0;
- int pos, len;
-
- fdctrl_reset_irq();
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- fdctrl.state &= ~FD_CTRL_SLEEP;
- if (FD_STATE(fdctrl.data_state) == FD_STATE_CMD) {
- FLOPPY_ERROR("can't read data in CMD state\n");
+ int pos;
+
+ cur_drv = get_cur_drv(fdctrl);
+ fdctrl->dsr &= ~FD_DSR_PWRDOWN;
+ if (!(fdctrl->msr & FD_MSR_RQM) || !(fdctrl->msr & FD_MSR_DIO)) {
+ FLOPPY_ERROR("controller not ready for reading\n");
return 0;
}
- pos = fdctrl.data_pos;
- if (FD_STATE(fdctrl.data_state) == FD_STATE_DATA) {
+ pos = fdctrl->data_pos;
+ if (fdctrl->msr & FD_MSR_NONDMA) {
pos %= FD_SECTOR_LEN;
if (pos == 0) {
- len = fdctrl.data_len - fdctrl.data_pos;
- if (len > FD_SECTOR_LEN)
- len = FD_SECTOR_LEN;
- bdrv_read(cur_drv->bs, fd_sector(cur_drv),
- fdctrl.fifo, len);
+ if (fdctrl->data_pos != 0)
+ if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
+ FLOPPY_DPRINTF("error seeking to next sector %d\n",
+ fd_sector(cur_drv));
+ return 0;
+ }
+ if (bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
+ FLOPPY_DPRINTF("error getting sector %d\n",
+ fd_sector(cur_drv));
+ /* Sure, image size is too small... */
+ memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
+ }
}
}
- retval = fdctrl.fifo[pos];
- if (++fdctrl.data_pos == fdctrl.data_len) {
- fdctrl.data_pos = 0;
- /* Switch from transfert mode to status mode
+ retval = fdctrl->fifo[pos];
+ if (++fdctrl->data_pos == fdctrl->data_len) {
+ fdctrl->data_pos = 0;
+ /* Switch from transfer mode to status mode
* then from status mode to command mode
*/
- if (FD_STATE(fdctrl.data_state) == FD_STATE_DATA)
- fdctrl_stop_transfer(0x20, 0x00, 0x00);
- else
- fdctrl_reset_fifo();
+ if (fdctrl->msr & FD_MSR_NONDMA) {
+ fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
+ } else {
+ fdctrl_reset_fifo(fdctrl);
+ fdctrl_reset_irq(fdctrl);
+ }
}
FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
return retval;
}
-static void fdctrl_write_data (CPUState *env, uint32_t reg, uint32_t value)
+static void fdctrl_format_sector(FDCtrl *fdctrl)
+{
+ FDrive *cur_drv;
+ uint8_t kh, kt, ks;
+
+ SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
+ cur_drv = get_cur_drv(fdctrl);
+ kt = fdctrl->fifo[6];
+ kh = fdctrl->fifo[7];
+ ks = fdctrl->fifo[8];
+ FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
+ GET_CUR_DRV(fdctrl), kh, kt, ks,
+ fd_sector_calc(kh, kt, ks, cur_drv->last_sect));
+ switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
+ case 2:
+ /* sect too big */
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
+ fdctrl->fifo[3] = kt;
+ fdctrl->fifo[4] = kh;
+ fdctrl->fifo[5] = ks;
+ return;
+ case 3:
+ /* track too big */
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, FD_SR1_EC, 0x00);
+ fdctrl->fifo[3] = kt;
+ fdctrl->fifo[4] = kh;
+ fdctrl->fifo[5] = ks;
+ return;
+ case 4:
+ /* No seek enabled */
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
+ fdctrl->fifo[3] = kt;
+ fdctrl->fifo[4] = kh;
+ fdctrl->fifo[5] = ks;
+ return;
+ case 1:
+ fdctrl->data_state |= FD_STATE_SEEK;
+ break;
+ default:
+ break;
+ }
+ memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
+ if (cur_drv->bs == NULL ||
+ bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
+ FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
+ } else {
+ if (cur_drv->sect == cur_drv->last_sect) {
+ fdctrl->data_state &= ~FD_STATE_FORMAT;
+ /* Last sector done */
+ if (FD_DID_SEEK(fdctrl->data_state))
+ fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
+ else
+ fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+ } else {
+ /* More to do */
+ fdctrl->data_pos = 0;
+ fdctrl->data_len = 4;
+ }
+ }
+}
+
+static void fdctrl_handle_lock(FDCtrl *fdctrl, int direction)
+{
+ fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
+ fdctrl->fifo[0] = fdctrl->lock << 4;
+ fdctrl_set_fifo(fdctrl, 1, fdctrl->lock);
+}
+
+static void fdctrl_handle_dumpreg(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv = get_cur_drv(fdctrl);
+
+ /* Drives position */
+ fdctrl->fifo[0] = drv0(fdctrl)->track;
+ fdctrl->fifo[1] = drv1(fdctrl)->track;
+#if MAX_FD == 4
+ fdctrl->fifo[2] = drv2(fdctrl)->track;
+ fdctrl->fifo[3] = drv3(fdctrl)->track;
+#else
+ fdctrl->fifo[2] = 0;
+ fdctrl->fifo[3] = 0;
+#endif
+ /* timers */
+ fdctrl->fifo[4] = fdctrl->timer0;
+ fdctrl->fifo[5] = (fdctrl->timer1 << 1) | (fdctrl->dor & FD_DOR_DMAEN ? 1 : 0);
+ fdctrl->fifo[6] = cur_drv->last_sect;
+ fdctrl->fifo[7] = (fdctrl->lock << 7) |
+ (cur_drv->perpendicular << 2);
+ fdctrl->fifo[8] = fdctrl->config;
+ fdctrl->fifo[9] = fdctrl->precomp_trk;
+ fdctrl_set_fifo(fdctrl, 10, 0);
+}
+
+static void fdctrl_handle_version(FDCtrl *fdctrl, int direction)
+{
+ /* Controller's version */
+ fdctrl->fifo[0] = fdctrl->version;
+ fdctrl_set_fifo(fdctrl, 1, 1);
+}
+
+static void fdctrl_handle_partid(FDCtrl *fdctrl, int direction)
+{
+ fdctrl->fifo[0] = 0x41; /* Stepping 1 */
+ fdctrl_set_fifo(fdctrl, 1, 0);
+}
+
+static void fdctrl_handle_restore(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv = get_cur_drv(fdctrl);
+
+ /* Drives position */
+ drv0(fdctrl)->track = fdctrl->fifo[3];
+ drv1(fdctrl)->track = fdctrl->fifo[4];
+#if MAX_FD == 4
+ drv2(fdctrl)->track = fdctrl->fifo[5];
+ drv3(fdctrl)->track = fdctrl->fifo[6];
+#endif
+ /* timers */
+ fdctrl->timer0 = fdctrl->fifo[7];
+ fdctrl->timer1 = fdctrl->fifo[8];
+ cur_drv->last_sect = fdctrl->fifo[9];
+ fdctrl->lock = fdctrl->fifo[10] >> 7;
+ cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
+ fdctrl->config = fdctrl->fifo[11];
+ fdctrl->precomp_trk = fdctrl->fifo[12];
+ fdctrl->pwrd = fdctrl->fifo[13];
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_save(FDCtrl *fdctrl, int direction)
{
- fdrive_t *cur_drv, *drv0, *drv1;
+ FDrive *cur_drv = get_cur_drv(fdctrl);
+
+ fdctrl->fifo[0] = 0;
+ fdctrl->fifo[1] = 0;
+ /* Drives position */
+ fdctrl->fifo[2] = drv0(fdctrl)->track;
+ fdctrl->fifo[3] = drv1(fdctrl)->track;
+#if MAX_FD == 4
+ fdctrl->fifo[4] = drv2(fdctrl)->track;
+ fdctrl->fifo[5] = drv3(fdctrl)->track;
+#else
+ fdctrl->fifo[4] = 0;
+ fdctrl->fifo[5] = 0;
+#endif
+ /* timers */
+ fdctrl->fifo[6] = fdctrl->timer0;
+ fdctrl->fifo[7] = fdctrl->timer1;
+ fdctrl->fifo[8] = cur_drv->last_sect;
+ fdctrl->fifo[9] = (fdctrl->lock << 7) |
+ (cur_drv->perpendicular << 2);
+ fdctrl->fifo[10] = fdctrl->config;
+ fdctrl->fifo[11] = fdctrl->precomp_trk;
+ fdctrl->fifo[12] = fdctrl->pwrd;
+ fdctrl->fifo[13] = 0;
+ fdctrl->fifo[14] = 0;
+ fdctrl_set_fifo(fdctrl, 15, 1);
+}
+
+static void fdctrl_handle_readid(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv = get_cur_drv(fdctrl);
+
+ /* XXX: should set main status register to busy */
+ cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
+ qemu_mod_timer(fdctrl->result_timer,
+ qemu_get_clock(vm_clock) + (get_ticks_per_sec() / 50));
+}
+
+static void fdctrl_handle_format_track(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv;
+
+ SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
+ cur_drv = get_cur_drv(fdctrl);
+ fdctrl->data_state |= FD_STATE_FORMAT;
+ if (fdctrl->fifo[0] & 0x80)
+ fdctrl->data_state |= FD_STATE_MULTI;
+ else
+ fdctrl->data_state &= ~FD_STATE_MULTI;
+ fdctrl->data_state &= ~FD_STATE_SEEK;
+ cur_drv->bps =
+ fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
+#if 0
+ cur_drv->last_sect =
+ cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
+ fdctrl->fifo[3] / 2;
+#else
+ cur_drv->last_sect = fdctrl->fifo[3];
+#endif
+ /* TODO: implement format using DMA expected by the Bochs BIOS
+ * and Linux fdformat (read 3 bytes per sector via DMA and fill
+ * the sector with the specified fill byte
+ */
+ fdctrl->data_state &= ~FD_STATE_FORMAT;
+ fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+}
+
+static void fdctrl_handle_specify(FDCtrl *fdctrl, int direction)
+{
+ fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
+ fdctrl->timer1 = fdctrl->fifo[2] >> 1;
+ if (fdctrl->fifo[2] & 1)
+ fdctrl->dor &= ~FD_DOR_DMAEN;
+ else
+ fdctrl->dor |= FD_DOR_DMAEN;
+ /* No result back */
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_sense_drive_status(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv;
+
+ SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
+ cur_drv = get_cur_drv(fdctrl);
+ cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
+ /* 1 Byte status back */
+ fdctrl->fifo[0] = (cur_drv->ro << 6) |
+ (cur_drv->track == 0 ? 0x10 : 0x00) |
+ (cur_drv->head << 2) |
+ GET_CUR_DRV(fdctrl) |
+ 0x28;
+ fdctrl_set_fifo(fdctrl, 1, 0);
+}
+
+static void fdctrl_handle_recalibrate(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv;
+
+ SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
+ cur_drv = get_cur_drv(fdctrl);
+ fd_recalibrate(cur_drv);
+ fdctrl_reset_fifo(fdctrl);
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
+}
+
+static void fdctrl_handle_sense_interrupt_status(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv = get_cur_drv(fdctrl);
+
+ if(fdctrl->reset_sensei > 0) {
+ fdctrl->fifo[0] =
+ FD_SR0_RDYCHG + FD_RESET_SENSEI_COUNT - fdctrl->reset_sensei;
+ fdctrl->reset_sensei--;
+ } else {
+ /* XXX: status0 handling is broken for read/write
+ commands, so we do this hack. It should be suppressed
+ ASAP */
+ fdctrl->fifo[0] =
+ FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
+ }
+
+ fdctrl->fifo[1] = cur_drv->track;
+ fdctrl_set_fifo(fdctrl, 2, 0);
+ fdctrl_reset_irq(fdctrl);
+ fdctrl->status0 = FD_SR0_RDYCHG;
+}
+
+static void fdctrl_handle_seek(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv;
+
+ SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
+ cur_drv = get_cur_drv(fdctrl);
+ fdctrl_reset_fifo(fdctrl);
+ if (fdctrl->fifo[2] > cur_drv->max_track) {
+ fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
+ } else {
+ cur_drv->track = fdctrl->fifo[2];
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
+ }
+}
+
+static void fdctrl_handle_perpendicular_mode(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv = get_cur_drv(fdctrl);
+
+ if (fdctrl->fifo[1] & 0x80)
+ cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
+ /* No result back */
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_configure(FDCtrl *fdctrl, int direction)
+{
+ fdctrl->config = fdctrl->fifo[2];
+ fdctrl->precomp_trk = fdctrl->fifo[3];
+ /* No result back */
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_powerdown_mode(FDCtrl *fdctrl, int direction)
+{
+ fdctrl->pwrd = fdctrl->fifo[1];
+ fdctrl->fifo[0] = fdctrl->fifo[1];
+ fdctrl_set_fifo(fdctrl, 1, 1);
+}
+
+static void fdctrl_handle_option(FDCtrl *fdctrl, int direction)
+{
+ /* No result back */
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv = get_cur_drv(fdctrl);
+
+ if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
+ /* Command parameters done */
+ if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
+ fdctrl->fifo[0] = fdctrl->fifo[1];
+ fdctrl->fifo[2] = 0;
+ fdctrl->fifo[3] = 0;
+ fdctrl_set_fifo(fdctrl, 4, 1);
+ } else {
+ fdctrl_reset_fifo(fdctrl);
+ }
+ } else if (fdctrl->data_len > 7) {
+ /* ERROR */
+ fdctrl->fifo[0] = 0x80 |
+ (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
+ fdctrl_set_fifo(fdctrl, 1, 1);
+ }
+}
+
+static void fdctrl_handle_relative_seek_out(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv;
+
+ SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
+ cur_drv = get_cur_drv(fdctrl);
+ if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
+ cur_drv->track = cur_drv->max_track - 1;
+ } else {
+ cur_drv->track += fdctrl->fifo[2];
+ }
+ fdctrl_reset_fifo(fdctrl);
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
+}
+
+static void fdctrl_handle_relative_seek_in(FDCtrl *fdctrl, int direction)
+{
+ FDrive *cur_drv;
+
+ SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
+ cur_drv = get_cur_drv(fdctrl);
+ if (fdctrl->fifo[2] > cur_drv->track) {
+ cur_drv->track = 0;
+ } else {
+ cur_drv->track -= fdctrl->fifo[2];
+ }
+ fdctrl_reset_fifo(fdctrl);
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
+}
+
+static const struct {
+ uint8_t value;
+ uint8_t mask;
+ const char* name;
+ int parameters;
+ void (*handler)(FDCtrl *fdctrl, int direction);
+ int direction;
+} handlers[] = {
+ { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
+ { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
+ { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
+ { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
+ { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
+ { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
+ { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
+ { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
+ { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
+ { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
+ { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
+ { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
+ { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
+ { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
+ { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
+ { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
+ { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
+ { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
+ { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
+ { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
+ { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
+ { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
+ { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
+ { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
+ { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
+ { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
+ { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
+ { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
+ { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
+ { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
+ { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
+ { 0, 0, "unknown", 0, fdctrl_unimplemented }, /* default handler */
+};
+/* Associate command to an index in the 'handlers' array */
+static uint8_t command_to_handler[256];
+
+static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
+{
+ FDrive *cur_drv;
+ int pos;
- fdctrl_reset_irq();
- drv0 = &fdctrl.drives[fdctrl.bootsel];
- drv1 = &fdctrl.drives[1 - fdctrl.bootsel];
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
/* Reset mode */
- if (fdctrl.state & FD_CTRL_RESET) {
- FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
+ if (!(fdctrl->dor & FD_DOR_nRESET)) {
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
return;
}
- fdctrl.state &= ~FD_CTRL_SLEEP;
- if ((fdctrl.data_state & FD_STATE_STATE) == FD_STATE_STATUS) {
- FLOPPY_ERROR("can't write data in status mode\n");
+ if (!(fdctrl->msr & FD_MSR_RQM) || (fdctrl->msr & FD_MSR_DIO)) {
+ FLOPPY_ERROR("controller not ready for writing\n");
return;
}
+ fdctrl->dsr &= ~FD_DSR_PWRDOWN;
/* Is it write command time ? */
- if (FD_STATE(fdctrl.data_state) == FD_STATE_DATA) {
+ if (fdctrl->msr & FD_MSR_NONDMA) {
/* FIFO data write */
- fdctrl.fifo[fdctrl.data_pos++] = value;
- if (fdctrl.data_pos % FD_SECTOR_LEN == (FD_SECTOR_LEN - 1) ||
- fdctrl.data_pos == fdctrl.data_len) {
- bdrv_write(cur_drv->bs, fd_sector(cur_drv),
- fdctrl.fifo, FD_SECTOR_LEN);
+ pos = fdctrl->data_pos++;
+ pos %= FD_SECTOR_LEN;
+ fdctrl->fifo[pos] = value;
+ if (pos == FD_SECTOR_LEN - 1 ||
+ fdctrl->data_pos == fdctrl->data_len) {
+ cur_drv = get_cur_drv(fdctrl);
+ if (bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
+ FLOPPY_ERROR("writing sector %d\n", fd_sector(cur_drv));
+ return;
+ }
+ if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
+ FLOPPY_DPRINTF("error seeking to next sector %d\n",
+ fd_sector(cur_drv));
+ return;
+ }
}
- /* Switch from transfert mode to status mode
+ /* Switch from transfer mode to status mode
* then from status mode to command mode
*/
- if (FD_STATE(fdctrl.data_state) == FD_STATE_DATA)
- fdctrl_stop_transfer(0x20, 0x00, 0x00);
+ if (fdctrl->data_pos == fdctrl->data_len)
+ fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
return;
}
- if (fdctrl.data_pos == 0) {
+ if (fdctrl->data_pos == 0) {
/* Command */
- switch (value & 0x5F) {
- case 0x46:
- /* READ variants */
- FLOPPY_DPRINTF("READ command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- case 0x4C:
- /* READ_DELETED variants */
- FLOPPY_DPRINTF("READ_DELETED command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- case 0x50:
- /* SCAN_EQUAL variants */
- FLOPPY_DPRINTF("SCAN_EQUAL command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- case 0x56:
- /* VERIFY variants */
- FLOPPY_DPRINTF("VERIFY command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- case 0x59:
- /* SCAN_LOW_OR_EQUAL variants */
- FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- case 0x5D:
- /* SCAN_HIGH_OR_EQUAL variants */
- FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- default:
- break;
- }
- switch (value & 0x7F) {
- case 0x45:
- /* WRITE variants */
- FLOPPY_DPRINTF("WRITE command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- case 0x49:
- /* WRITE_DELETED variants */
- FLOPPY_DPRINTF("WRITE_DELETED command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- default:
- break;
- }
- switch (value) {
- case 0x03:
- /* SPECIFY */
- FLOPPY_DPRINTF("SPECIFY command\n");
- /* 1 parameter cmd */
- fdctrl.data_len = 3;
- goto enqueue;
- case 0x04:
- /* SENSE_DRIVE_STATUS */
- FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
- /* 1 parameter cmd */
- fdctrl.data_len = 2;
- goto enqueue;
- case 0x07:
- /* RECALIBRATE */
- FLOPPY_DPRINTF("RECALIBRATE command\n");
- /* 1 parameter cmd */
- fdctrl.data_len = 2;
- goto enqueue;
- case 0x08:
- /* SENSE_INTERRUPT_STATUS */
- FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
- fdctrl.int_status);
- /* No parameters cmd: returns status if no interrupt */
- fdctrl.fifo[0] =
- fdctrl.int_status | (cur_drv->head << 2) | fdctrl.cur_drv;
- fdctrl.fifo[1] = cur_drv->track;
- fdctrl_set_fifo(2, 0);
- return;
- case 0x0E:
- /* DUMPREG */
- FLOPPY_DPRINTF("DUMPREG command\n");
- /* Drives position */
- fdctrl.fifo[0] = drv0->track;
- fdctrl.fifo[1] = drv1->track;
- fdctrl.fifo[2] = 0;
- fdctrl.fifo[3] = 0;
- /* timers */
- fdctrl.fifo[4] = fdctrl.timer0;
- fdctrl.fifo[5] = (fdctrl.timer1 << 1) | fdctrl.dma_en;
- fdctrl.fifo[6] = cur_drv->last_sect;
- fdctrl.fifo[7] = (fdctrl.lock << 7) |
- (cur_drv->perpendicular << 2);
- fdctrl.fifo[8] = fdctrl.config;
- fdctrl.fifo[9] = fdctrl.precomp_trk;
- fdctrl_set_fifo(10, 0);
- return;
- case 0x0F:
- /* SEEK */
- FLOPPY_DPRINTF("SEEK command\n");
- /* 2 parameters cmd */
- fdctrl.data_len = 3;
- goto enqueue;
- case 0x10:
- /* VERSION */
- FLOPPY_DPRINTF("VERSION command\n");
- /* No parameters cmd */
- /* Controler's version */
- fdctrl.fifo[0] = fdctrl.version;
- fdctrl_set_fifo(1, 1);
- return;
- case 0x12:
- /* PERPENDICULAR_MODE */
- FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
- /* 1 parameter cmd */
- fdctrl.data_len = 2;
- goto enqueue;
- case 0x13:
- /* CONFIGURE */
- FLOPPY_DPRINTF("CONFIGURE command\n");
- /* 3 parameters cmd */
- fdctrl.data_len = 4;
- goto enqueue;
- case 0x14:
- /* UNLOCK */
- FLOPPY_DPRINTF("UNLOCK command\n");
- /* No parameters cmd */
- fdctrl.lock = 0;
- fdctrl.fifo[0] = 0;
- fdctrl_set_fifo(1, 0);
- return;
- case 0x17:
- /* POWERDOWN_MODE */
- FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
- /* 2 parameters cmd */
- fdctrl.data_len = 3;
- goto enqueue;
- case 0x18:
- /* PART_ID */
- FLOPPY_DPRINTF("PART_ID command\n");
- /* No parameters cmd */
- fdctrl.fifo[0] = 0x41; /* Stepping 1 */
- fdctrl_set_fifo(1, 0);
- return;
- case 0x2C:
- /* SAVE */
- FLOPPY_DPRINTF("SAVE command\n");
- /* No parameters cmd */
- fdctrl.fifo[0] = 0;
- fdctrl.fifo[1] = 0;
- /* Drives position */
- fdctrl.fifo[2] = drv0->track;
- fdctrl.fifo[3] = drv1->track;
- fdctrl.fifo[4] = 0;
- fdctrl.fifo[5] = 0;
- /* timers */
- fdctrl.fifo[6] = fdctrl.timer0;
- fdctrl.fifo[7] = fdctrl.timer1;
- fdctrl.fifo[8] = cur_drv->last_sect;
- fdctrl.fifo[9] = (fdctrl.lock << 7) |
- (cur_drv->perpendicular << 2);
- fdctrl.fifo[10] = fdctrl.config;
- fdctrl.fifo[11] = fdctrl.precomp_trk;
- fdctrl.fifo[12] = fdctrl.pwrd;
- fdctrl.fifo[13] = 0;
- fdctrl.fifo[14] = 0;
- fdctrl_set_fifo(15, 1);
- return;
- case 0x33:
- /* OPTION */
- FLOPPY_DPRINTF("OPTION command\n");
- /* 1 parameter cmd */
- fdctrl.data_len = 2;
- goto enqueue;
- case 0x42:
- /* READ_TRACK */
- FLOPPY_DPRINTF("READ_TRACK command\n");
- /* 8 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- case 0x4A:
- /* READ_ID */
- FLOPPY_DPRINTF("READ_ID command\n");
- /* 1 parameter cmd */
- fdctrl.data_len = 2;
- goto enqueue;
- case 0x4C:
- /* RESTORE */
- FLOPPY_DPRINTF("RESTORE command\n");
- /* 17 parameters cmd */
- fdctrl.data_len = 18;
- goto enqueue;
- case 0x4D:
- /* FORMAT_TRACK */
- FLOPPY_DPRINTF("FORMAT_TRACK command\n");
- /* 5 parameters cmd */
- fdctrl.data_len = 9;
- goto enqueue;
- case 0x8E:
- /* DRIVE_SPECIFICATION_COMMAND */
- FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
- /* 5 parameters cmd */
- fdctrl.data_len = 6;
- goto enqueue;
- case 0x8F:
- /* RELATIVE_SEEK_OUT */
- FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
- /* 2 parameters cmd */
- fdctrl.data_len = 3;
- goto enqueue;
- case 0x94:
- /* LOCK */
- FLOPPY_DPRINTF("LOCK command\n");
- /* No parameters cmd */
- fdctrl.lock = 1;
- fdctrl.fifo[0] = 0x10;
- fdctrl_set_fifo(1, 1);
- return;
- case 0xCD:
- /* FORMAT_AND_WRITE */
- FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
- /* 10 parameters cmd */
- fdctrl.data_len = 11;
- goto enqueue;
- case 0xCF:
- /* RELATIVE_SEEK_IN */
- FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
- /* 2 parameters cmd */
- fdctrl.data_len = 3;
- goto enqueue;
- default:
- /* Unknown command */
- FLOPPY_ERROR("unknown command: 0x%02x\n", value);
- fdctrl_unimplemented();
- return;
- }
+ pos = command_to_handler[value & 0xff];
+ FLOPPY_DPRINTF("%s command\n", handlers[pos].name);
+ fdctrl->data_len = handlers[pos].parameters + 1;
}
-enqueue:
- fdctrl.fifo[fdctrl.data_pos] = value;
- if (++fdctrl.data_pos == fdctrl.data_len) {
+
+ FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
+ fdctrl->fifo[fdctrl->data_pos++] = value;
+ if (fdctrl->data_pos == fdctrl->data_len) {
/* We now have all parameters
* and will be able to treat the command
*/
- switch (fdctrl.fifo[0] & 0x1F) {
- case 0x06:
- {
- /* READ variants */
- FLOPPY_DPRINTF("treat READ command\n");
- fdctrl_start_transfer(FD_DIR_READ);
+ if (fdctrl->data_state & FD_STATE_FORMAT) {
+ fdctrl_format_sector(fdctrl);
return;
}
- case 0x0C:
- /* READ_DELETED variants */
-// FLOPPY_DPRINTF("treat READ_DELETED command\n");
- FLOPPY_ERROR("treat READ_DELETED command\n");
- fdctrl_start_transfer_del(1);
- return;
- case 0x16:
- /* VERIFY variants */
-// FLOPPY_DPRINTF("treat VERIFY command\n");
- FLOPPY_ERROR("treat VERIFY command\n");
- fdctrl_stop_transfer(0x20, 0x00, 0x00);
- return;
- case 0x10:
- /* SCAN_EQUAL variants */
-// FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
- FLOPPY_ERROR("treat SCAN_EQUAL command\n");
- fdctrl_start_transfer(FD_DIR_SCANE);
- return;
- case 0x19:
- /* SCAN_LOW_OR_EQUAL variants */
-// FLOPPY_DPRINTF("treat SCAN_LOW_OR_EQUAL command\n");
- FLOPPY_ERROR("treat SCAN_LOW_OR_EQUAL command\n");
- fdctrl_start_transfer(FD_DIR_SCANL);
- return;
- case 0x1D:
- /* SCAN_HIGH_OR_EQUAL variants */
-// FLOPPY_DPRINTF("treat SCAN_HIGH_OR_EQUAL command\n");
- FLOPPY_ERROR("treat SCAN_HIGH_OR_EQUAL command\n");
- fdctrl_start_transfer(FD_DIR_SCANH);
- return;
- default:
- break;
- }
- switch (fdctrl.fifo[0] & 0x3F) {
- case 0x05:
- /* WRITE variants */
- FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl.fifo[0]);
- fdctrl_start_transfer(FD_DIR_WRITE);
- return;
- case 0x09:
- /* WRITE_DELETED variants */
-// FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
- FLOPPY_ERROR("treat WRITE_DELETED command\n");
- fdctrl_start_transfer_del(FD_DIR_WRITE);
- return;
- default:
- break;
- }
- switch (fdctrl.fifo[0]) {
- case 0x03:
- /* SPECIFY */
- FLOPPY_DPRINTF("treat SPECIFY command\n");
- fdctrl.timer0 = (fdctrl.fifo[1] >> 4) & 0xF;
- fdctrl.timer1 = fdctrl.fifo[1] >> 1;
- /* No result back */
- fdctrl_reset_fifo();
- break;
- case 0x04:
- /* SENSE_DRIVE_STATUS */
- FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
- fdctrl.cur_drv = fdctrl.fifo[1] & 1;
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- cur_drv->head = (fdctrl.fifo[1] >> 2) & 1;
- /* 1 Byte status back */
- fdctrl.fifo[0] = (cur_drv->ro << 6) |
- (cur_drv->track == 0 ? 0x10 : 0x00) |
- fdctrl.cur_drv;
- fdctrl_set_fifo(1, 0);
- break;
- case 0x07:
- /* RECALIBRATE */
- FLOPPY_DPRINTF("treat RECALIBRATE command\n");
- fdctrl.cur_drv = fdctrl.fifo[1] & 1;
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- fd_recalibrate(cur_drv);
- fdctrl_reset_fifo();
- /* Raise Interrupt */
- fdctrl_raise_irq(0x20);
- break;
- case 0x0F:
- /* SEEK */
- FLOPPY_DPRINTF("treat SEEK command\n");
- fdctrl.cur_drv = fdctrl.fifo[1] & 1;
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- if (fdctrl.fifo[2] <= cur_drv->track)
- cur_drv->dir = 1;
- else
- cur_drv->dir = 0;
- cur_drv->head = (fdctrl.fifo[1] >> 2) & 1;
- if (fdctrl.fifo[2] > cur_drv->max_track) {
- fdctrl_raise_irq(0x60);
- } else {
- cur_drv->track = fdctrl.fifo[2];
- fdctrl_reset_fifo();
- /* Raise Interrupt */
- fdctrl_raise_irq(0x20);
- }
- break;
- case 0x12:
- /* PERPENDICULAR_MODE */
- FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
- if (fdctrl.fifo[1] & 0x80)
- cur_drv->perpendicular = fdctrl.fifo[1] & 0x7;
- /* No result back */
- fdctrl_reset_fifo();
- break;
- case 0x13:
- /* CONFIGURE */
- FLOPPY_DPRINTF("treat CONFIGURE command\n");
- fdctrl.config = fdctrl.fifo[2];
- fdctrl.precomp_trk = fdctrl.fifo[3];
- /* No result back */
- fdctrl_reset_fifo();
- break;
- case 0x17:
- /* POWERDOWN_MODE */
- FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
- fdctrl.pwrd = fdctrl.fifo[1];
- fdctrl.fifo[0] = fdctrl.fifo[1];
- fdctrl_set_fifo(1, 1);
- break;
- case 0x33:
- /* OPTION */
- FLOPPY_DPRINTF("treat OPTION command\n");
- /* No result back */
- fdctrl_reset_fifo();
- break;
- case 0x42:
- /* READ_TRACK */
-// FLOPPY_DPRINTF("treat READ_TRACK command\n");
- FLOPPY_ERROR("treat READ_TRACK command\n");
- fdctrl_unimplemented();
- break;
- case 0x4A:
- /* READ_ID */
-// FLOPPY_DPRINTF("treat READ_ID command\n");
- FLOPPY_ERROR("treat READ_ID command\n");
- fdctrl_stop_transfer(0x00, 0x00, 0x00);
- break;
- case 0x4C:
- /* RESTORE */
- FLOPPY_DPRINTF("treat RESTORE command\n");
- /* Drives position */
- drv0->track = fdctrl.fifo[3];
- drv1->track = fdctrl.fifo[4];
- /* timers */
- fdctrl.timer0 = fdctrl.fifo[7];
- fdctrl.timer1 = fdctrl.fifo[8];
- cur_drv->last_sect = fdctrl.fifo[9];
- fdctrl.lock = fdctrl.fifo[10] >> 7;
- cur_drv->perpendicular = (fdctrl.fifo[10] >> 2) & 0xF;
- fdctrl.config = fdctrl.fifo[11];
- fdctrl.precomp_trk = fdctrl.fifo[12];
- fdctrl.pwrd = fdctrl.fifo[13];
- fdctrl_reset_fifo();
- break;
- case 0x4D:
- /* FORMAT_TRACK */
-// FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
- FLOPPY_ERROR("treat FORMAT_TRACK command\n");
- fdctrl_unimplemented();
- break;
- case 0x8E:
- /* DRIVE_SPECIFICATION_COMMAND */
- FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
- if (fdctrl.fifo[fdctrl.data_pos - 1] & 0x80) {
- /* Command parameters done */
- if (fdctrl.fifo[fdctrl.data_pos - 1] & 0x40) {
- fdctrl.fifo[0] = fdctrl.fifo[1];
- fdctrl.fifo[2] = 0;
- fdctrl.fifo[3] = 0;
- fdctrl_set_fifo(4, 1);
- } else {
- fdctrl_reset_fifo();
+
+ pos = command_to_handler[fdctrl->fifo[0] & 0xff];
+ FLOPPY_DPRINTF("treat %s command\n", handlers[pos].name);
+ (*handlers[pos].handler)(fdctrl, handlers[pos].direction);
+ }
+}
+
+static void fdctrl_result_timer(void *opaque)
+{
+ FDCtrl *fdctrl = opaque;
+ FDrive *cur_drv = get_cur_drv(fdctrl);
+
+ /* Pretend we are spinning.
+ * This is needed for Coherent, which uses READ ID to check for
+ * sector interleaving.
+ */
+ if (cur_drv->last_sect != 0) {
+ cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
+ }
+ fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+}
+
+/* Init functions */
+static void fdctrl_connect_drives(FDCtrl *fdctrl)
+{
+ unsigned int i;
+
+ for (i = 0; i < MAX_FD; i++) {
+ fd_init(&fdctrl->drives[i]);
+ fd_revalidate(&fdctrl->drives[i]);
+ }
+}
+
+FDCtrl *fdctrl_init_isa(DriveInfo **fds)
+{
+ ISADevice *dev;
+
+ dev = isa_create("isa-fdc");
+ if (fds[0]) {
+ qdev_prop_set_drive(&dev->qdev, "driveA", fds[0]);
+ }
+ if (fds[1]) {
+ qdev_prop_set_drive(&dev->qdev, "driveB", fds[1]);
+ }
+ if (qdev_init(&dev->qdev) < 0)
+ return NULL;
+ return &(DO_UPCAST(FDCtrlISABus, busdev, dev)->state);
+}
+
+FDCtrl *fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
+ target_phys_addr_t mmio_base, DriveInfo **fds)
+{
+ FDCtrl *fdctrl;
+ DeviceState *dev;
+ FDCtrlSysBus *sys;
+
+ dev = qdev_create(NULL, "sysbus-fdc");
+ sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
+ fdctrl = &sys->state;
+ fdctrl->dma_chann = dma_chann; /* FIXME */
+ if (fds[0]) {
+ qdev_prop_set_drive(dev, "driveA", fds[0]);
+ }
+ if (fds[1]) {
+ qdev_prop_set_drive(dev, "driveB", fds[1]);
+ }
+ qdev_init_nofail(dev);
+ sysbus_connect_irq(&sys->busdev, 0, irq);
+ sysbus_mmio_map(&sys->busdev, 0, mmio_base);
+
+ return fdctrl;
+}
+
+FDCtrl *sun4m_fdctrl_init(qemu_irq irq, target_phys_addr_t io_base,
+ DriveInfo **fds, qemu_irq *fdc_tc)
+{
+ DeviceState *dev;
+ FDCtrlSysBus *sys;
+ FDCtrl *fdctrl;
+
+ dev = qdev_create(NULL, "SUNW,fdtwo");
+ if (fds[0]) {
+ qdev_prop_set_drive(dev, "drive", fds[0]);
+ }
+ qdev_init_nofail(dev);
+ sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
+ fdctrl = &sys->state;
+ sysbus_connect_irq(&sys->busdev, 0, irq);
+ sysbus_mmio_map(&sys->busdev, 0, io_base);
+ *fdc_tc = qdev_get_gpio_in(dev, 0);
+
+ return fdctrl;
+}
+
+static int fdctrl_init_common(FDCtrl *fdctrl, target_phys_addr_t io_base)
+{
+ int i, j;
+ static int command_tables_inited = 0;
+
+ /* Fill 'command_to_handler' lookup table */
+ if (!command_tables_inited) {
+ command_tables_inited = 1;
+ for (i = ARRAY_SIZE(handlers) - 1; i >= 0; i--) {
+ for (j = 0; j < sizeof(command_to_handler); j++) {
+ if ((j & handlers[i].mask) == handlers[i].value) {
+ command_to_handler[j] = i;
}
- } else if (fdctrl.data_len > 7) {
- /* ERROR */
- fdctrl.fifo[0] = 0x80 |
- (cur_drv->head << 2) | fdctrl.cur_drv;
- fdctrl_set_fifo(1, 1);
- }
- break;
- case 0x8F:
- /* RELATIVE_SEEK_OUT */
- FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
- fdctrl.cur_drv = fdctrl.fifo[1] & 1;
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- cur_drv->head = (fdctrl.fifo[1] >> 2) & 1;
- if (fdctrl.fifo[2] + cur_drv->track > cur_drv->max_track) {
- /* ERROR */
- fdctrl_raise_irq(0x70);
- } else {
- cur_drv->track += fdctrl.fifo[2];
- cur_drv->dir = 0;
- fdctrl_reset_fifo();
- fdctrl_raise_irq(0x20);
- }
- break;
- case 0xCD:
- /* FORMAT_AND_WRITE */
-// FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
- FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
- fdctrl_unimplemented();
- break;
- case 0xCF:
- /* RELATIVE_SEEK_IN */
- FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
- fdctrl.cur_drv = fdctrl.fifo[1] & 1;
- cur_drv = fdctrl.cur_drv == 0 ? drv0 : drv1;
- cur_drv->head = (fdctrl.fifo[1] >> 2) & 1;
- if (fdctrl.fifo[2] > cur_drv->track) {
- /* ERROR */
- fdctrl_raise_irq(0x60);
- } else {
- fdctrl_reset_fifo();
- cur_drv->track -= fdctrl.fifo[2];
- cur_drv->dir = 1;
- /* Raise Interrupt */
- fdctrl_raise_irq(0x20);
}
- break;
}
}
+
+ FLOPPY_DPRINTF("init controller\n");
+ fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
+ fdctrl->fifo_size = 512;
+ fdctrl->result_timer = qemu_new_timer(vm_clock,
+ fdctrl_result_timer, fdctrl);
+
+ fdctrl->version = 0x90; /* Intel 82078 controller */
+ fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
+ fdctrl->num_floppies = MAX_FD;
+
+ if (fdctrl->dma_chann != -1)
+ DMA_register_channel(fdctrl->dma_chann, &fdctrl_transfer_handler, fdctrl);
+ fdctrl_connect_drives(fdctrl);
+
+ vmstate_register(io_base, &vmstate_fdc, fdctrl);
+ return 0;
+}
+
+static int isabus_fdc_init1(ISADevice *dev)
+{
+ FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
+ FDCtrl *fdctrl = &isa->state;
+ int iobase = 0x3f0;
+ int isairq = 6;
+ int dma_chann = 2;
+ int ret;
+
+ register_ioport_read(iobase + 0x01, 5, 1,
+ &fdctrl_read_port, fdctrl);
+ register_ioport_read(iobase + 0x07, 1, 1,
+ &fdctrl_read_port, fdctrl);
+ register_ioport_write(iobase + 0x01, 5, 1,
+ &fdctrl_write_port, fdctrl);
+ register_ioport_write(iobase + 0x07, 1, 1,
+ &fdctrl_write_port, fdctrl);
+ isa_init_irq(&isa->busdev, &fdctrl->irq, isairq);
+ fdctrl->dma_chann = dma_chann;
+
+ ret = fdctrl_init_common(fdctrl, iobase);
+
+ return ret;
+}
+
+static int sysbus_fdc_init1(SysBusDevice *dev)
+{
+ FDCtrlSysBus *sys = DO_UPCAST(FDCtrlSysBus, busdev, dev);
+ FDCtrl *fdctrl = &sys->state;
+ int io;
+ int ret;
+
+ io = cpu_register_io_memory(fdctrl_mem_read, fdctrl_mem_write, fdctrl);
+ sysbus_init_mmio(dev, 0x08, io);
+ sysbus_init_irq(dev, &fdctrl->irq);
+ qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
+ fdctrl->dma_chann = -1;
+
+ ret = fdctrl_init_common(fdctrl, io);
+
+ return ret;
+}
+
+static int sun4m_fdc_init1(SysBusDevice *dev)
+{
+ FDCtrl *fdctrl = &(FROM_SYSBUS(FDCtrlSysBus, dev)->state);
+ int io;
+
+ io = cpu_register_io_memory(fdctrl_mem_read_strict,
+ fdctrl_mem_write_strict, fdctrl);
+ sysbus_init_mmio(dev, 0x08, io);
+ sysbus_init_irq(dev, &fdctrl->irq);
+ qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
+
+ fdctrl->sun4m = 1;
+ return fdctrl_init_common(fdctrl, io);
+}
+
+static ISADeviceInfo isa_fdc_info = {
+ .init = isabus_fdc_init1,
+ .qdev.name = "isa-fdc",
+ .qdev.size = sizeof(FDCtrlISABus),
+ .qdev.no_user = 1,
+ .qdev.reset = fdctrl_external_reset_isa,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_DRIVE("driveA", FDCtrlISABus, state.drives[0].dinfo),
+ DEFINE_PROP_DRIVE("driveB", FDCtrlISABus, state.drives[1].dinfo),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static SysBusDeviceInfo sysbus_fdc_info = {
+ .init = sysbus_fdc_init1,
+ .qdev.name = "sysbus-fdc",
+ .qdev.size = sizeof(FDCtrlSysBus),
+ .qdev.reset = fdctrl_external_reset_sysbus,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_DRIVE("driveA", FDCtrlSysBus, state.drives[0].dinfo),
+ DEFINE_PROP_DRIVE("driveB", FDCtrlSysBus, state.drives[1].dinfo),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static SysBusDeviceInfo sun4m_fdc_info = {
+ .init = sun4m_fdc_init1,
+ .qdev.name = "SUNW,fdtwo",
+ .qdev.size = sizeof(FDCtrlSysBus),
+ .qdev.reset = fdctrl_external_reset_sysbus,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_DRIVE("drive", FDCtrlSysBus, state.drives[0].dinfo),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void fdc_register_devices(void)
+{
+ isa_qdev_register(&isa_fdc_info);
+ sysbus_register_withprop(&sysbus_fdc_info);
+ sysbus_register_withprop(&sun4m_fdc_info);
}
+
+device_init(fdc_register_devices)
projects / qemu.git / blobdiff