/*
- * QEMU Floppy disk emulator
- *
- * Copyright (c) 2003 Jocelyn Mayer
- *
+ * QEMU Floppy disk emulator (Intel 82078)
+ *
+ * Copyright (c) 2003, 2007 Jocelyn Mayer
+ *
* 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>
-
-#include "vl.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 "hw.h"
+#include "fdc.h"
+#include "block.h"
+#include "qemu-timer.h"
+#include "isa.h"
/********************************************************/
/* debug Floppy devices */
typedef enum fdrive_flags_t {
FDRIVE_MOTOR_ON = 0x01, /* motor on/off */
- FDRIVE_REVALIDATE = 0x02, /* Revalidated */
} fdrive_flags_t;
typedef enum fdisk_flags_t {
uint8_t dir; /* Direction */
uint8_t rw; /* Read/write */
/* Media */
- fdisk_type_t disk; /* Disk type */
fdisk_flags_t flags;
uint8_t last_sect; /* Nb sector per track */
uint8_t max_track; /* Nb of tracks */
{
/* Drive */
drv->bs = bs;
- if (bs)
- drv->drive = FDRIVE_DRV_144;
- else
- drv->drive = FDRIVE_DRV_NONE;
+ drv->drive = FDRIVE_DRV_NONE;
drv->drflags = 0;
drv->perpendicular = 0;
/* Disk */
- drv->disk = FDRIVE_DISK_NONE;
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)
+ uint8_t sect, uint8_t last_sect)
{
return (((track * 2) + head) * last_sect) + sect - 1;
}
int ret;
if (track > drv->max_track ||
- (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
- FLOPPY_ERROR("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);
+ (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 %d %02x %02x)\n",
- head, track, sect, 1,
- (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 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);
}
#endif
drv->head = head;
- if (drv->track != track)
- ret = 1;
+ if (drv->track != track)
+ ret = 1;
drv->track = track;
drv->sect = sect;
}
drv->rw = 0;
}
+/* Recognize floppy formats */
+typedef struct fd_format_t {
+ fdrive_type_t drive;
+ fdisk_type_t disk;
+ uint8_t last_sect;
+ uint8_t max_track;
+ uint8_t max_head;
+ const char *str;
+} fd_format_t;
+
+static const fd_format_t 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)
{
- int64_t nb_sectors;
+ const fd_format_t *parse;
+ uint64_t nb_sectors, size;
+ int i, first_match, match;
int nb_heads, max_track, last_sect, ro;
FLOPPY_DPRINTF("revalidate\n");
- drv->drflags &= ~FDRIVE_REVALIDATE;
-
- /* if no drive present, cannot do more */
- if (!drv->bs)
- return;
-
- if (bdrv_is_inserted(drv->bs)) {
- ro = bdrv_is_read_only(drv->bs);
- bdrv_get_geometry_hint(drv->bs, &max_track, &nb_heads, &last_sect);
- if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
- drv->disk = FDRIVE_DISK_USER;
- printf("User defined disk (%d %d %d)",
- nb_heads - 1, max_track, last_sect);
- 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;
- } else {
- bdrv_get_geometry(drv->bs, &nb_sectors);
- switch (nb_sectors) {
- /* 2.88 MB 3"1/2 drive disks */
- case 7680:
- printf("3.84 Mb 3\"1/2 disk (1 80 48)");
- drv->drive = FDRIVE_DRV_288;
- drv->disk = FDRIVE_DISK_288;
- drv->last_sect = 48;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 7040:
- printf("3.52 Mb 3\"1/2 disk (1 80 44)");
- drv->drive = FDRIVE_DRV_288;
- drv->disk = FDRIVE_DISK_288;
- drv->last_sect = 44;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 6400:
- printf("3.2 Mb 3\"1/2 disk (1 80 40)");
- drv->drive = FDRIVE_DRV_288;
- drv->disk = FDRIVE_DISK_288;
- drv->last_sect = 40;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 6240:
- printf("3.12 Mb 3\"1/2 disk (1 80 39)");
- drv->drive = FDRIVE_DRV_288;
- drv->disk = FDRIVE_DISK_288;
- drv->last_sect = 39;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 5760:
- printf("2.88 Mb 3\"1/2 disk (1 80 36)");
- drv->drive = FDRIVE_DRV_288;
- drv->disk = FDRIVE_DISK_288;
- drv->last_sect = 36;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
-
- /* 1.44 MB 3"1/2 drive disks */
- case 3840:
- printf("1.92 Mb 3\"1/2 disk (1 80 24)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 24;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 3680:
- printf("1.84 Mb 3\"1/2 disk (1 80 23)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 23;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 3520:
- printf("1.76 Mb 3\"1/2 disk (1 80 22)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 22;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 3486:
- printf("1.74 Mb 3\"1/2 disk (1 83 21)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 21;
- drv->max_track = 83;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 3444:
- printf("1.72 Mb 3\"1/2 disk (1 82 21)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 21;
- drv->max_track = 82;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 3360:
- printf("1.68 Mb 3\"1/2 disk (1 80 21)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 21;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 3200:
- printf("1.6 Mb 3\"1/2 disk (1 80 20)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 20;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 2880:
- default:
- printf("1.44 Mb 3\"1/2 disk (1 80 18)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_144;
- drv->last_sect = 18;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
-
- /* 720 kB 3"1/2 drive disks */
- case 2240:
- printf("1.12 Mb 3\"1/2 disk (1 80 14)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_720;
- drv->last_sect = 14;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 2080:
- printf("1.04 Mb 3\"1/2 disk (1 80 13)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_720;
- drv->last_sect = 13;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 1660:
- printf("830 kb 3\"1/2 disk (1 83 10)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_720;
- drv->last_sect = 10;
- drv->max_track = 83;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 1640:
- printf("820 kb 3\"1/2 disk (1 82 10)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_720;
- drv->last_sect = 10;
- drv->max_track = 82;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 1600:
- printf("800 kb 3\"1/2 disk (1 80 10)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_720;
- drv->last_sect = 10;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 1440:
- printf("720 kb 3\"1/2 disk (1 80 9)");
- drv->drive = FDRIVE_DRV_144;
- drv->disk = FDRIVE_DISK_720;
- drv->last_sect = 9;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
-
- /* 1.2 MB 5"1/4 drive disks */
- case 2988:
- printf("1.49 Mb 5\"1/4 disk (1 83 18)");
- drv->drive = FDRIVE_DRV_120;
- drv->disk = FDRIVE_DISK_144; /* ? */
- drv->last_sect = 18;
- drv->max_track = 83;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 2952:
- printf("1.48 Mb 5\"1/4 disk (1 82 18)");
- drv->drive = FDRIVE_DRV_120;
- drv->disk = FDRIVE_DISK_144; /* ? */
- drv->last_sect = 18;
- drv->max_track = 82;
- drv->flags |= FDISK_DBL_SIDES;
- break;
- case 2400:
- printf("1.2 Mb 5\"1/4 disk (1 80 15)");
- drv->drive = FDRIVE_DRV_120;
- drv->disk = FDRIVE_DISK_144; /* ? */
- drv->last_sect = 15;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
-
- case 1760:
- printf("880 kb 5\"1/4 disk (1 80 11)");
- drv->drive = FDRIVE_DRV_120;
- drv->disk = FDRIVE_DISK_144; /* ? */
- drv->last_sect = 11;
- drv->max_track = 80;
- drv->flags |= FDISK_DBL_SIDES;
- break;
-
- /* 360 kB 5"1/4 drive disks */
- case 840:
- /* 420 kB 5"1/4 disk */
- printf("420 kb 5\"1/4 disk (1 42 10)");
- drv->drive = FDRIVE_DRV_120;
- drv->disk = FDRIVE_DISK_144; /* ? */
- drv->last_sect = 10;
- drv->max_track = 42;
- drv->flags |= FDISK_DBL_SIDES;
- case 820:
- /* 410 kB 5"1/4 disk */
- printf("410 kb 5\"1/4 disk (1 41 10)");
- drv->drive = FDRIVE_DRV_120;
- drv->disk = FDRIVE_DISK_144; /* ? */
- drv->last_sect = 10;
- drv->max_track = 41;
- drv->flags |= FDISK_DBL_SIDES;
- case 720:
- /* 360 kB 5"1/4 disk */
- printf("360 kb 5\"1/4 disk (1 40 9)");
- drv->drive = FDRIVE_DRV_120;
- drv->disk = FDRIVE_DISK_144; /* ? */
- drv->last_sect = 9;
- drv->max_track = 40;
- drv->flags |= FDISK_DBL_SIDES;
- break;
+ 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 {
+ 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");
}
- printf(" %s\n", ro == 0 ? "rw" : "ro");
- }
- drv->ro = ro;
+ 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 {
- printf("No disk in drive\n");
- drv->disk = FDRIVE_DISK_NONE;
+ FLOPPY_DPRINTF("No disk in drive\n");
drv->last_sect = 0;
- drv->max_track = 0;
- drv->flags &= ~FDISK_DBL_SIDES;
+ drv->max_track = 0;
+ drv->flags &= ~FDISK_DBL_SIDES;
}
- drv->drflags |= FDRIVE_REVALIDATE;
}
/* Motor control */
}
/********************************************************/
-/* Intel 82078 floppy disk controler emulation */
+/* Intel 82078 floppy disk controller emulation */
static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq);
static void fdctrl_reset_fifo (fdctrl_t *fdctrl);
-static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size);
+static int fdctrl_transfer_handler (void *opaque, int nchan,
+ int dma_pos, int dma_len);
static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status);
+static void fdctrl_result_timer(void *opaque);
static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl);
static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl);
static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl);
enum {
- FD_CTRL_ACTIVE = 0x01,
+ FD_CTRL_ACTIVE = 0x01, /* XXX: suppress that */
FD_CTRL_RESET = 0x02,
- FD_CTRL_SLEEP = 0x04,
- FD_CTRL_BUSY = 0x08,
+ FD_CTRL_SLEEP = 0x04, /* XXX: suppress that */
+ FD_CTRL_BUSY = 0x08, /* dma transfer in progress */
FD_CTRL_INTR = 0x10,
};
struct fdctrl_t {
fdctrl_t *fdctrl;
- /* Controler's identification */
+ /* Controller's identification */
uint8_t version;
/* HW */
- int irq_lvl;
+ qemu_irq irq;
int dma_chann;
- uint32_t io_base;
- /* Controler state */
+ target_phys_addr_t io_base;
+ /* Controller state */
+ QEMUTimer *result_timer;
uint8_t state;
uint8_t dma_en;
uint8_t cur_drv;
uint8_t bootsel;
/* Command FIFO */
- uint8_t fifo[FD_SECTOR_LEN];
+ uint8_t *fifo;
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 *fdctrl = opaque;
uint32_t retval;
- if (reg == fdctrl->io_base + 0x01)
- retval = fdctrl_read_statusB(fdctrl);
- else if (reg == fdctrl->io_base + 0x02)
- retval = fdctrl_read_dor(fdctrl);
- else if (reg == fdctrl->io_base + 0x03)
+ switch (reg & 0x07) {
+ case 0x00:
+ if (fdctrl->sun4m) {
+ // Identify to Linux as S82078B
+ retval = fdctrl_read_statusB(fdctrl);
+ } else {
+ retval = (uint32_t)(-1);
+ }
+ break;
+ case 0x01:
+ retval = fdctrl_read_statusB(fdctrl);
+ break;
+ case 0x02:
+ retval = fdctrl_read_dor(fdctrl);
+ break;
+ case 0x03:
retval = fdctrl_read_tape(fdctrl);
- else if (reg == fdctrl->io_base + 0x04)
+ break;
+ case 0x04:
retval = fdctrl_read_main_status(fdctrl);
- else if (reg == fdctrl->io_base + 0x05)
+ break;
+ case 0x05:
retval = fdctrl_read_data(fdctrl);
- else if (reg == fdctrl->io_base + 0x07)
+ break;
+ case 0x07:
retval = fdctrl_read_dir(fdctrl);
- else
- retval = (uint32_t)(-1);
+ break;
+ default:
+ retval = (uint32_t)(-1);
+ break;
+ }
+ FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
return retval;
}
{
fdctrl_t *fdctrl = opaque;
- if (reg == fdctrl->io_base + 0x02)
- fdctrl_write_dor(fdctrl, value);
- else if (reg == fdctrl->io_base + 0x03)
+ FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
+
+ switch (reg & 0x07) {
+ case 0x02:
+ fdctrl_write_dor(fdctrl, value);
+ break;
+ case 0x03:
fdctrl_write_tape(fdctrl, value);
- else if (reg == fdctrl->io_base + 0x04)
+ break;
+ case 0x04:
fdctrl_write_rate(fdctrl, value);
- else if (reg == fdctrl->io_base + 0x05)
+ break;
+ case 0x05:
fdctrl_write_data(fdctrl, value);
+ break;
+ default:
+ break;
+ }
}
-static void fd_change_cb (void *opaque)
+static uint32_t fdctrl_read_mem (void *opaque, target_phys_addr_t reg)
{
- fdrive_t *drv = opaque;
+ return fdctrl_read(opaque, (uint32_t)reg);
+}
- FLOPPY_DPRINTF("disk change\n");
- /* TODO: use command-line parameters to force geometry */
- fd_revalidate(drv);
-#if 0
- fd_recalibrate(drv);
- fdctrl_reset_fifo(drv->fdctrl);
- fdctrl_raise_irq(drv->fdctrl, 0x20);
-#endif
+static void fdctrl_write_mem (void *opaque,
+ target_phys_addr_t reg, uint32_t value)
+{
+ fdctrl_write(opaque, (uint32_t)reg, value);
+}
+
+static CPUReadMemoryFunc *fdctrl_mem_read[3] = {
+ fdctrl_read_mem,
+ fdctrl_read_mem,
+ fdctrl_read_mem,
+};
+
+static CPUWriteMemoryFunc *fdctrl_mem_write[3] = {
+ fdctrl_write_mem,
+ fdctrl_write_mem,
+ fdctrl_write_mem,
+};
+
+static void fd_save (QEMUFile *f, fdrive_t *fd)
+{
+ uint8_t tmp;
+
+ tmp = fd->drflags;
+ qemu_put_8s(f, &tmp);
+ qemu_put_8s(f, &fd->head);
+ qemu_put_8s(f, &fd->track);
+ qemu_put_8s(f, &fd->sect);
+ qemu_put_8s(f, &fd->dir);
+ qemu_put_8s(f, &fd->rw);
+}
+
+static void fdc_save (QEMUFile *f, void *opaque)
+{
+ fdctrl_t *s = opaque;
+
+ qemu_put_8s(f, &s->state);
+ qemu_put_8s(f, &s->dma_en);
+ qemu_put_8s(f, &s->cur_drv);
+ qemu_put_8s(f, &s->bootsel);
+ qemu_put_buffer(f, s->fifo, FD_SECTOR_LEN);
+ qemu_put_be32s(f, &s->data_pos);
+ qemu_put_be32s(f, &s->data_len);
+ qemu_put_8s(f, &s->data_state);
+ qemu_put_8s(f, &s->data_dir);
+ qemu_put_8s(f, &s->int_status);
+ qemu_put_8s(f, &s->eot);
+ qemu_put_8s(f, &s->timer0);
+ qemu_put_8s(f, &s->timer1);
+ qemu_put_8s(f, &s->precomp_trk);
+ qemu_put_8s(f, &s->config);
+ qemu_put_8s(f, &s->lock);
+ qemu_put_8s(f, &s->pwrd);
+ fd_save(f, &s->drives[0]);
+ fd_save(f, &s->drives[1]);
+}
+
+static int fd_load (QEMUFile *f, fdrive_t *fd)
+{
+ uint8_t tmp;
+
+ qemu_get_8s(f, &tmp);
+ fd->drflags = tmp;
+ qemu_get_8s(f, &fd->head);
+ qemu_get_8s(f, &fd->track);
+ qemu_get_8s(f, &fd->sect);
+ qemu_get_8s(f, &fd->dir);
+ qemu_get_8s(f, &fd->rw);
+
+ return 0;
+}
+
+static int fdc_load (QEMUFile *f, void *opaque, int version_id)
+{
+ fdctrl_t *s = opaque;
+ int ret;
+
+ if (version_id != 1)
+ return -EINVAL;
+
+ qemu_get_8s(f, &s->state);
+ qemu_get_8s(f, &s->dma_en);
+ qemu_get_8s(f, &s->cur_drv);
+ qemu_get_8s(f, &s->bootsel);
+ qemu_get_buffer(f, s->fifo, FD_SECTOR_LEN);
+ qemu_get_be32s(f, &s->data_pos);
+ qemu_get_be32s(f, &s->data_len);
+ qemu_get_8s(f, &s->data_state);
+ qemu_get_8s(f, &s->data_dir);
+ qemu_get_8s(f, &s->int_status);
+ qemu_get_8s(f, &s->eot);
+ qemu_get_8s(f, &s->timer0);
+ qemu_get_8s(f, &s->timer1);
+ qemu_get_8s(f, &s->precomp_trk);
+ qemu_get_8s(f, &s->config);
+ qemu_get_8s(f, &s->lock);
+ qemu_get_8s(f, &s->pwrd);
+
+ ret = fd_load(f, &s->drives[0]);
+ if (ret == 0)
+ ret = fd_load(f, &s->drives[1]);
+
+ return ret;
}
-fdctrl_t *fdctrl_init (int irq_lvl, int dma_chann, int mem_mapped,
- uint32_t io_base,
+static void fdctrl_external_reset(void *opaque)
+{
+ fdctrl_t *s = opaque;
+
+ fdctrl_reset(s, 0);
+}
+
+fdctrl_t *fdctrl_init (qemu_irq irq, int dma_chann, int mem_mapped,
+ target_phys_addr_t io_base,
BlockDriverState **fds)
{
fdctrl_t *fdctrl;
-// int io_mem;
+ int io_mem;
int i;
- FLOPPY_DPRINTF("init controler\n");
+ FLOPPY_DPRINTF("init controller\n");
fdctrl = qemu_mallocz(sizeof(fdctrl_t));
if (!fdctrl)
return NULL;
- fdctrl->version = 0x90; /* Intel 82078 controler */
- fdctrl->irq_lvl = irq_lvl;
+ fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
+ if (fdctrl->fifo == NULL) {
+ qemu_free(fdctrl);
+ return NULL;
+ }
+ fdctrl->result_timer = qemu_new_timer(vm_clock,
+ fdctrl_result_timer, fdctrl);
+
+ fdctrl->version = 0x90; /* Intel 82078 controller */
+ fdctrl->irq = irq;
fdctrl->dma_chann = dma_chann;
fdctrl->io_base = io_base;
- fdctrl->config = 0x40; /* Implicit seek, polling & FIFO enabled */
+ fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */
+ fdctrl->sun4m = 0;
if (fdctrl->dma_chann != -1) {
fdctrl->dma_en = 1;
DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl);
}
for (i = 0; i < 2; i++) {
fd_init(&fdctrl->drives[i], fds[i]);
- if (fds[i]) {
- bdrv_set_change_cb(fds[i],
- &fd_change_cb, &fdctrl->drives[i]);
- }
}
fdctrl_reset(fdctrl, 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
+ io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write,
+ fdctrl);
+ cpu_register_physical_memory(io_base, 0x08, io_mem);
} else {
- register_ioport_read(io_base + 0x01, 5, 1, &fdctrl_read, fdctrl);
- register_ioport_read(io_base + 0x07, 1, 1, &fdctrl_read, fdctrl);
- register_ioport_write(io_base + 0x01, 5, 1, &fdctrl_write, fdctrl);
- register_ioport_write(io_base + 0x07, 1, 1, &fdctrl_write, fdctrl);
+ register_ioport_read((uint32_t)io_base + 0x01, 5, 1, &fdctrl_read,
+ fdctrl);
+ register_ioport_read((uint32_t)io_base + 0x07, 1, 1, &fdctrl_read,
+ fdctrl);
+ register_ioport_write((uint32_t)io_base + 0x01, 5, 1, &fdctrl_write,
+ fdctrl);
+ register_ioport_write((uint32_t)io_base + 0x07, 1, 1, &fdctrl_write,
+ fdctrl);
}
- for (i = 0; i < MAX_FD; i++) {
+ register_savevm("fdc", io_base, 1, fdc_save, fdc_load, fdctrl);
+ qemu_register_reset(fdctrl_external_reset, fdctrl);
+ for (i = 0; i < 2; i++) {
fd_revalidate(&fdctrl->drives[i]);
}
+
+ return fdctrl;
+}
+
+fdctrl_t *sun4m_fdctrl_init (qemu_irq irq, target_phys_addr_t io_base,
+ BlockDriverState **fds)
+{
+ fdctrl_t *fdctrl;
+
+ fdctrl = fdctrl_init(irq, 0, 1, io_base, fds);
+ fdctrl->sun4m = 1;
+
return fdctrl;
}
/* Change IRQ state */
static void fdctrl_reset_irq (fdctrl_t *fdctrl)
{
- if (fdctrl->state & FD_CTRL_INTR) {
- pic_set_irq(fdctrl->irq_lvl, 0);
- fdctrl->state &= ~(FD_CTRL_INTR | FD_CTRL_SLEEP | FD_CTRL_BUSY);
- }
+ FLOPPY_DPRINTF("Reset interrupt\n");
+ qemu_set_irq(fdctrl->irq, 0);
+ fdctrl->state &= ~FD_CTRL_INTR;
}
static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status)
{
+ // Sparc mutation
+ if (fdctrl->sun4m && !fdctrl->dma_en) {
+ fdctrl->state &= ~FD_CTRL_BUSY;
+ fdctrl->int_status = status;
+ return;
+ }
if (~(fdctrl->state & FD_CTRL_INTR)) {
- pic_set_irq(fdctrl->irq_lvl, 1);
+ qemu_set_irq(fdctrl->irq, 1);
fdctrl->state |= FD_CTRL_INTR;
}
FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status);
fdctrl->int_status = status;
}
-/* Reset controler */
+/* Reset controller */
static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq)
{
int i;
- FLOPPY_DPRINTF("reset controler\n");
+ FLOPPY_DPRINTF("reset controller\n");
fdctrl_reset_irq(fdctrl);
- /* Initialise controler */
+ /* Initialise controller */
fdctrl->cur_drv = 0;
/* FIFO state */
fdctrl->data_pos = 0;
fd_reset(&fdctrl->drives[i]);
fdctrl_reset_fifo(fdctrl);
if (do_irq)
- fdctrl_raise_irq(fdctrl, 0x20);
+ fdctrl_raise_irq(fdctrl, 0xc0);
}
static inline fdrive_t *drv0 (fdctrl_t *fdctrl)
/* Status B register : 0x01 (read-only) */
static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl)
{
- fdctrl_reset_irq(fdctrl);
FLOPPY_DPRINTF("status register: 0x00\n");
-
return 0;
}
/* Drive motors state indicators */
if (drv0(fdctrl)->drflags & FDRIVE_MOTOR_ON)
- retval |= 1 << 5;
+ retval |= 1 << 5;
if (drv1(fdctrl)->drflags & FDRIVE_MOTOR_ON)
- retval |= 1 << 4;
+ retval |= 1 << 4;
/* DMA enable */
retval |= fdctrl->dma_en << 3;
/* Reset indicator */
static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value)
{
- fdctrl_reset_irq(fdctrl);
/* Reset mode */
if (fdctrl->state & FD_CTRL_RESET) {
if (!(value & 0x04)) {
- FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
return;
}
}
/* Reset */
if (!(value & 0x04)) {
if (!(fdctrl->state & FD_CTRL_RESET)) {
- FLOPPY_DPRINTF("controler enter RESET state\n");
+ FLOPPY_DPRINTF("controller enter RESET state\n");
fdctrl->state |= FD_CTRL_RESET;
- fdctrl_reset(fdctrl, 1);
}
} else {
if (fdctrl->state & FD_CTRL_RESET) {
- FLOPPY_DPRINTF("controler out of RESET state\n");
+ FLOPPY_DPRINTF("controller out of RESET state\n");
+ fdctrl_reset(fdctrl, 1);
fdctrl->state &= ~(FD_CTRL_RESET | FD_CTRL_SLEEP);
}
}
{
uint32_t retval = 0;
- fdctrl_reset_irq(fdctrl);
/* Disk boot selection indicator */
retval |= fdctrl->bootsel << 2;
/* Tape indicators: never allowed */
static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value)
{
- fdctrl_reset_irq(fdctrl);
/* Reset mode */
if (fdctrl->state & FD_CTRL_RESET) {
- FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
return;
}
FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
{
uint32_t retval = 0;
- fdctrl_reset_irq(fdctrl);
fdctrl->state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET);
if (!(fdctrl->state & FD_CTRL_BUSY)) {
/* Data transfer allowed */
/* Data select rate register : 0x04 (write) */
static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value)
{
- fdctrl_reset_irq(fdctrl);
/* Reset mode */
if (fdctrl->state & FD_CTRL_RESET) {
- FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
- return;
- }
+ 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.precomp = (value >> 2) & 0x07;
}
+static int fdctrl_media_changed(fdrive_t *drv)
+{
+ int ret;
+
+ if (!drv->bs)
+ return 0;
+ ret = bdrv_media_changed(drv->bs);
+ if (ret) {
+ fd_revalidate(drv);
+ }
+ return ret;
+}
+
/* Digital input register : 0x07 (read-only) */
static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl)
{
uint32_t retval = 0;
- fdctrl_reset_irq(fdctrl);
- if (drv0(fdctrl)->drflags & FDRIVE_REVALIDATE ||
- drv1(fdctrl)->drflags & FDRIVE_REVALIDATE)
+ if (fdctrl_media_changed(drv0(fdctrl)) ||
+ fdctrl_media_changed(drv1(fdctrl)))
retval |= 0x80;
if (retval != 0)
FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
- drv0(fdctrl)->drflags &= ~FDRIVE_REVALIDATE;
- drv1(fdctrl)->drflags &= ~FDRIVE_REVALIDATE;
return retval;
}
fdrive_t *cur_drv;
cur_drv = get_cur_drv(fdctrl);
- fdctrl->fifo[0] = 0x60 | (cur_drv->head << 1) | fdctrl->cur_drv;
+ fdctrl->fifo[0] = 0x60 | (cur_drv->head << 2) | fdctrl->cur_drv;
fdctrl->fifo[1] = 0x00;
fdctrl->fifo[2] = 0x00;
fdctrl_set_fifo(fdctrl, 3, 1);
/* Callback for transfer end (stop or abort) */
static void fdctrl_stop_transfer (fdctrl_t *fdctrl, uint8_t status0,
- uint8_t status1, uint8_t status2)
+ uint8_t status1, uint8_t status2)
{
fdrive_t *cur_drv;
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;
+ status0 | (cur_drv->head << 2) | fdctrl->cur_drv);
+ fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | fdctrl->cur_drv;
fdctrl->fifo[1] = status1;
fdctrl->fifo[2] = status2;
fdctrl->fifo[3] = cur_drv->track;
fdctrl->fifo[5] = cur_drv->sect;
fdctrl->fifo[6] = FD_SECTOR_SC;
fdctrl->data_dir = FD_DIR_READ;
- if (fdctrl->state & FD_CTRL_BUSY)
+ if (fdctrl->state & FD_CTRL_BUSY) {
DMA_release_DREQ(fdctrl->dma_chann);
+ fdctrl->state &= ~FD_CTRL_BUSY;
+ }
fdctrl_set_fifo(fdctrl, 7, 1);
}
kt = fdctrl->fifo[2];
kh = fdctrl->fifo[3];
ks = fdctrl->fifo[4];
- FLOPPY_DPRINTF("Start tranfert at %d %d %02x %02x (%d)\n",
+ FLOPPY_DPRINTF("Start transfer 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;
if (fdctrl->fifo[5] == 00) {
fdctrl->data_len = fdctrl->fifo[8];
} else {
- int tmp;
- fdctrl->data_len = 128 << fdctrl->fifo[5];
+ int tmp;
+ fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
tmp = (cur_drv->last_sect - ks + 1);
if (fdctrl->fifo[0] & 0x80)
tmp += cur_drv->last_sect;
- fdctrl->data_len *= tmp;
+ fdctrl->data_len *= tmp;
}
+ fdctrl->eot = fdctrl->fifo[6];
if (fdctrl->dma_en) {
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_mode >> 2) & 3;
FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
- dma_mode, direction,
+ dma_mode, direction,
(128 << fdctrl->fifo[5]) *
- (cur_drv->last_sect - ks + 1), fdctrl->data_len);
+ (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
+ /* Now, we just have to wait for the DMA controller to
* recall us...
*/
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_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
}
}
FLOPPY_DPRINTF("start non-DMA transfer\n");
}
/* handlers for DMA transfers */
-static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size)
+static int fdctrl_transfer_handler (void *opaque, int nchan,
+ int dma_pos, int dma_len)
{
fdctrl_t *fdctrl;
fdrive_t *cur_drv;
uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00;
fdctrl = opaque;
- fdctrl_reset_irq(fdctrl);
if (!(fdctrl->state & FD_CTRL_BUSY)) {
FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
return 0;
if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
fdctrl->data_dir == FD_DIR_SCANH)
status2 = 0x04;
- if (size > fdctrl->data_len)
- size = fdctrl->data_len;
- if (cur_drv->bs == NULL) {
- if (fdctrl->data_dir == FD_DIR_WRITE)
- fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
- else
- fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
- len = 0;
- goto transfer_error;
- }
+ 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, 0x60, 0x00, 0x00);
+ else
+ fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
+ len = 0;
+ goto transfer_error;
+ }
rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
- for (start_pos = fdctrl->data_pos; fdctrl->data_pos < size;) {
- len = size - fdctrl->data_pos;
+ 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 %02x "
- "(%d-0x%08x 0x%08x)\n", len, size, fdctrl->data_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, fdctrl->cur_drv, cur_drv->head,
cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
- fd_sector(cur_drv) * 512, addr);
+ fd_sector(cur_drv) * 512);
if (fdctrl->data_dir != FD_DIR_WRITE ||
- len < FD_SECTOR_LEN || rel_pos != 0) {
+ 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) {
+ fdctrl->fifo, 1) < 0) {
FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
fd_sector(cur_drv));
/* Sure, image size is too small... */
memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
}
- }
- switch (fdctrl->data_dir) {
- case FD_DIR_READ:
- /* READ commands */
- cpu_physical_memory_write(addr + fdctrl->data_pos,
- fdctrl->fifo + rel_pos, len);
- break;
- case FD_DIR_WRITE:
+ }
+ 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 */
- cpu_physical_memory_read(addr + fdctrl->data_pos,
- fdctrl->fifo + rel_pos, len);
+ 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) {
+ fdctrl->fifo, 1) < 0) {
FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv));
fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
goto transfer_error;
- }
- break;
- default:
- /* SCAN commands */
+ }
+ break;
+ default:
+ /* SCAN commands */
{
- uint8_t tmpbuf[FD_SECTOR_LEN];
+ uint8_t tmpbuf[FD_SECTOR_LEN];
int ret;
- cpu_physical_memory_read(addr + fdctrl->data_pos,
- tmpbuf, len);
+ DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
if (ret == 0) {
status2 = 0x08;
goto end_transfer;
}
}
- break;
+ break;
}
- fdctrl->data_pos += len;
- rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
+ fdctrl->data_pos += len;
+ rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
if (rel_pos == 0) {
/* Seek to next sector */
- cur_drv->sect++;
- FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
- cur_drv->head, cur_drv->track, cur_drv->sect,
- fd_sector(cur_drv),
- fdctrl->data_pos - size);
- if (cur_drv->sect > cur_drv->last_sect) {
- 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;
+ FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
+ cur_drv->head, cur_drv->track, cur_drv->sect,
+ fd_sector(cur_drv),
+ fdctrl->data_pos - len);
+ /* 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)
+ break;
+ }
} else {
- cur_drv->head = 0;
- cur_drv->track++;
- if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
- break;
+ cur_drv->track++;
+ break;
}
+ 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->track++;
- break;
- }
- FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
- cur_drv->head, cur_drv->track,
- cur_drv->sect, fd_sector(cur_drv));
+ cur_drv->sect++;
}
}
}
-end_transfer:
+ end_transfer:
len = fdctrl->data_pos - start_pos;
FLOPPY_DPRINTF("end transfer %d %d %d\n",
- fdctrl->data_pos, len, fdctrl->data_len);
+ 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)
status0 |= 0x20;
fdctrl->data_len -= len;
// if (fdctrl->data_len == 0)
- fdctrl_stop_transfer(fdctrl, status0, status1, status2);
-transfer_error:
+ fdctrl_stop_transfer(fdctrl, status0, status1, status2);
+ transfer_error:
return len;
}
uint32_t retval = 0;
int pos, len;
- fdctrl_reset_irq(fdctrl);
cur_drv = get_cur_drv(fdctrl);
fdctrl->state &= ~FD_CTRL_SLEEP;
if (FD_STATE(fdctrl->data_state) == FD_STATE_CMD) {
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);
+ bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1);
}
}
retval = fdctrl->fifo[pos];
if (++fdctrl->data_pos == fdctrl->data_len) {
fdctrl->data_pos = 0;
- /* 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)
+ if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
- else
+ } else {
fdctrl_reset_fifo(fdctrl);
+ fdctrl_reset_irq(fdctrl);
+ }
}
FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
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("formating sector %d\n", fd_sector(cur_drv));
+ FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
fdctrl_stop_transfer(fdctrl, 0x60, 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, 0x20, 0x00, 0x00);
- else
- fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
- } else {
- /* More to do */
- fdctrl->data_pos = 0;
- fdctrl->data_len = 4;
- }
+ 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, 0x20, 0x00, 0x00);
+ else
+ fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+ } else {
+ /* More to do */
+ fdctrl->data_pos = 0;
+ fdctrl->data_len = 4;
+ }
}
}
{
fdrive_t *cur_drv;
- fdctrl_reset_irq(fdctrl);
cur_drv = get_cur_drv(fdctrl);
/* Reset mode */
if (fdctrl->state & FD_CTRL_RESET) {
- FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
return;
}
fdctrl->state &= ~FD_CTRL_SLEEP;
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);
+ bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1);
}
- /* 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)
FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
fdctrl->int_status);
/* No parameters cmd: returns status if no interrupt */
+#if 0
fdctrl->fifo[0] =
fdctrl->int_status | (cur_drv->head << 2) | fdctrl->cur_drv;
+#else
+ /* XXX: int_status handling is broken for read/write
+ commands, so we do this hack. It should be suppressed
+ ASAP */
+ fdctrl->fifo[0] =
+ 0x20 | (cur_drv->head << 2) | fdctrl->cur_drv;
+#endif
fdctrl->fifo[1] = cur_drv->track;
fdctrl_set_fifo(fdctrl, 2, 0);
- fdctrl_reset_irq(fdctrl);
- fdctrl->int_status = 0xC0;
+ fdctrl_reset_irq(fdctrl);
+ fdctrl->int_status = 0xC0;
return;
case 0x0E:
/* DUMPREG */
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);
+ (cur_drv->perpendicular << 2);
fdctrl->fifo[8] = fdctrl->config;
fdctrl->fifo[9] = fdctrl->precomp_trk;
fdctrl_set_fifo(fdctrl, 10, 0);
/* VERSION */
FLOPPY_DPRINTF("VERSION command\n");
/* No parameters cmd */
- /* Controler's version */
+ /* Controller's version */
fdctrl->fifo[0] = fdctrl->version;
fdctrl_set_fifo(fdctrl, 1, 1);
return;
fdctrl->fifo[7] = fdctrl->timer1;
fdctrl->fifo[8] = cur_drv->last_sect;
fdctrl->fifo[9] = (fdctrl->lock << 7) |
- (cur_drv->perpendicular << 2);
+ (cur_drv->perpendicular << 2);
fdctrl->fifo[10] = fdctrl->config;
fdctrl->fifo[11] = fdctrl->precomp_trk;
fdctrl->fifo[12] = fdctrl->pwrd;
return;
}
}
-enqueue:
+ enqueue:
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
*/
- if (fdctrl->data_state & FD_STATE_FORMAT) {
- fdctrl_format_sector(fdctrl);
- return;
- }
- switch (fdctrl->fifo[0] & 0x1F) {
- case 0x06:
- {
- /* READ variants */
- FLOPPY_DPRINTF("treat READ command\n");
- fdctrl_start_transfer(fdctrl, FD_DIR_READ);
+ if (fdctrl->data_state & FD_STATE_FORMAT) {
+ fdctrl_format_sector(fdctrl);
return;
}
+ switch (fdctrl->fifo[0] & 0x1F) {
+ case 0x06:
+ {
+ /* READ variants */
+ FLOPPY_DPRINTF("treat READ command\n");
+ fdctrl_start_transfer(fdctrl, FD_DIR_READ);
+ return;
+ }
case 0x0C:
/* READ_DELETED variants */
// FLOPPY_DPRINTF("treat READ_DELETED command\n");
/* SPECIFY */
FLOPPY_DPRINTF("treat SPECIFY command\n");
fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
- fdctrl->timer1 = fdctrl->fifo[1] >> 1;
- fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
+ fdctrl->timer1 = fdctrl->fifo[2] >> 1;
+ fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
/* No result back */
fdctrl_reset_fifo(fdctrl);
break;
/* SENSE_DRIVE_STATUS */
FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
+ 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) |
- fdctrl->cur_drv;
+ (cur_drv->head << 2) |
+ fdctrl->cur_drv |
+ 0x28;
fdctrl_set_fifo(fdctrl, 1, 0);
break;
case 0x07:
/* RECALIBRATE */
FLOPPY_DPRINTF("treat RECALIBRATE command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
+ cur_drv = get_cur_drv(fdctrl);
fd_recalibrate(cur_drv);
- fdctrl_reset_fifo(fdctrl);
+ fdctrl_reset_fifo(fdctrl);
/* Raise Interrupt */
- fdctrl_raise_irq(fdctrl, 0x20);
+ fdctrl_raise_irq(fdctrl, 0x20);
break;
case 0x0F:
/* SEEK */
FLOPPY_DPRINTF("treat SEEK command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- fd_start(cur_drv);
+ cur_drv = get_cur_drv(fdctrl);
+ fd_start(cur_drv);
if (fdctrl->fifo[2] <= cur_drv->track)
cur_drv->dir = 1;
else
cur_drv->dir = 0;
- fdctrl_reset_fifo(fdctrl);
+ fdctrl_reset_fifo(fdctrl);
if (fdctrl->fifo[2] > cur_drv->max_track) {
fdctrl_raise_irq(fdctrl, 0x60);
} else {
fdctrl_start_transfer(fdctrl, FD_DIR_READ);
break;
case 0x4A:
- /* READ_ID */
+ /* READ_ID */
FLOPPY_DPRINTF("treat READ_ID command\n");
- fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+ /* 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) + (ticks_per_sec / 50));
break;
case 0x4C:
/* RESTORE */
break;
case 0x4D:
/* FORMAT_TRACK */
- FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- 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];
+ FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
+ fdctrl->cur_drv = fdctrl->fifo[1] & 1;
+ 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;
+ 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];
+ cur_drv->last_sect = fdctrl->fifo[3];
#endif
- /* Bochs BIOS is buggy and don't send format informations
- * for each sector. So, pretend all's done right now...
- */
- fdctrl->data_state &= ~FD_STATE_FORMAT;
- fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+ /* 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);
break;
case 0x8E:
/* DRIVE_SPECIFICATION_COMMAND */
/* RELATIVE_SEEK_OUT */
FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- fd_start(cur_drv);
- cur_drv->dir = 0;
+ cur_drv = get_cur_drv(fdctrl);
+ fd_start(cur_drv);
+ cur_drv->dir = 0;
if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
- cur_drv->track = cur_drv->max_track - 1;
+ cur_drv->track = cur_drv->max_track - 1;
} else {
cur_drv->track += fdctrl->fifo[2];
}
- fdctrl_reset_fifo(fdctrl);
- fdctrl_raise_irq(fdctrl, 0x20);
+ fdctrl_reset_fifo(fdctrl);
+ fdctrl_raise_irq(fdctrl, 0x20);
break;
case 0xCD:
/* FORMAT_AND_WRITE */
fdctrl_unimplemented(fdctrl);
break;
case 0xCF:
- /* RELATIVE_SEEK_IN */
+ /* RELATIVE_SEEK_IN */
FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- fd_start(cur_drv);
- cur_drv->dir = 1;
+ cur_drv = get_cur_drv(fdctrl);
+ fd_start(cur_drv);
+ cur_drv->dir = 1;
if (fdctrl->fifo[2] > cur_drv->track) {
- cur_drv->track = 0;
+ cur_drv->track = 0;
} else {
cur_drv->track -= fdctrl->fifo[2];
}
- fdctrl_reset_fifo(fdctrl);
- /* Raise Interrupt */
- fdctrl_raise_irq(fdctrl, 0x20);
+ fdctrl_reset_fifo(fdctrl);
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, 0x20);
break;
}
}
}
+
+static void fdctrl_result_timer(void *opaque)
+{
+ fdctrl_t *fdctrl = opaque;
+ fdrive_t *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);
+}
projects / qemu / blobdiff