Simplify FDC code (Hervé Poussineau)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4174 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1
parent
2e4d9fb126
commit
65cef780e2
878
hw/fdc.c
878
hw/fdc.c
@ -2,6 +2,7 @@
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* QEMU Floppy disk emulator (Intel 82078)
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* QEMU Floppy disk emulator (Intel 82078)
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*
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*
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* Copyright (c) 2003, 2007 Jocelyn Mayer
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* Copyright (c) 2003, 2007 Jocelyn Mayer
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* Copyright (c) 2008 Hervé Poussineau
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* of this software and associated documentation files (the "Software"), to deal
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@ -372,35 +373,34 @@ enum {
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};
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};
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enum {
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enum {
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FD_CMD_READ_TRACK = 0x02,
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FD_CMD_SPECIFY = 0x03,
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FD_CMD_SPECIFY = 0x03,
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FD_CMD_SENSE_DRIVE_STATUS = 0x04,
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FD_CMD_SENSE_DRIVE_STATUS = 0x04,
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FD_CMD_WRITE = 0x05,
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FD_CMD_READ = 0x06,
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FD_CMD_RECALIBRATE = 0x07,
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FD_CMD_RECALIBRATE = 0x07,
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FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
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FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
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FD_CMD_WRITE_DELETED = 0x09,
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FD_CMD_READ_ID = 0x0a,
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FD_CMD_READ_DELETED = 0x0c,
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FD_CMD_FORMAT_TRACK = 0x0d,
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FD_CMD_DUMPREG = 0x0e,
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FD_CMD_DUMPREG = 0x0e,
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FD_CMD_SEEK = 0x0f,
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FD_CMD_SEEK = 0x0f,
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FD_CMD_VERSION = 0x10,
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FD_CMD_VERSION = 0x10,
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FD_CMD_SCAN_EQUAL = 0x11,
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FD_CMD_PERPENDICULAR_MODE = 0x12,
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FD_CMD_PERPENDICULAR_MODE = 0x12,
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FD_CMD_CONFIGURE = 0x13,
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FD_CMD_CONFIGURE = 0x13,
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FD_CMD_UNLOCK = 0x14,
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FD_CMD_LOCK = 0x14,
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FD_CMD_VERIFY = 0x16,
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FD_CMD_POWERDOWN_MODE = 0x17,
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FD_CMD_POWERDOWN_MODE = 0x17,
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FD_CMD_PART_ID = 0x18,
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FD_CMD_PART_ID = 0x18,
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FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
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FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
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FD_CMD_SAVE = 0x2c,
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FD_CMD_SAVE = 0x2c,
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FD_CMD_OPTION = 0x33,
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FD_CMD_OPTION = 0x33,
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FD_CMD_READ_TRACK = 0x42,
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FD_CMD_WRITE = 0x45,
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FD_CMD_READ = 0x46,
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FD_CMD_WRITE_DELETED = 0x49,
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FD_CMD_READ_ID = 0x4a,
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FD_CMD_READ_DELETED = 0x4c,
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FD_CMD_RESTORE = 0x4c,
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FD_CMD_RESTORE = 0x4c,
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FD_CMD_FORMAT_TRACK = 0x4d,
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FD_CMD_SCAN_EQUAL = 0x50,
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FD_CMD_VERIFY = 0x56,
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FD_CMD_SCAN_LOW_OR_EQUAL = 0x59,
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FD_CMD_SCAN_HIGH_OR_EQUAL = 0x5d,
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FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
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FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
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FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
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FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
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FD_CMD_LOCK = 0x94,
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FD_CMD_FORMAT_AND_WRITE = 0xcd,
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FD_CMD_FORMAT_AND_WRITE = 0xcd,
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FD_CMD_RELATIVE_SEEK_IN = 0xcf,
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FD_CMD_RELATIVE_SEEK_IN = 0xcf,
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};
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};
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@ -1047,7 +1047,7 @@ static void fdctrl_set_fifo (fdctrl_t *fdctrl, int fifo_len, int do_irq)
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}
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}
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/* Set an error: unimplemented/unknown command */
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/* Set an error: unimplemented/unknown command */
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static void fdctrl_unimplemented (fdctrl_t *fdctrl)
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static void fdctrl_unimplemented (fdctrl_t *fdctrl, int direction)
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{
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{
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#if 0
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#if 0
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fdrive_t *cur_drv;
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fdrive_t *cur_drv;
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@ -1441,9 +1441,339 @@ static void fdctrl_format_sector (fdctrl_t *fdctrl)
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}
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}
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}
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}
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static void fdctrl_handle_lock (fdctrl_t *fdctrl, int direction)
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{
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fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
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fdctrl->fifo[0] = fdctrl->lock << 4;
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fdctrl_set_fifo(fdctrl, 1, fdctrl->lock);
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}
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static void fdctrl_handle_dumpreg (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv = get_cur_drv(fdctrl);
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/* Drives position */
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fdctrl->fifo[0] = drv0(fdctrl)->track;
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fdctrl->fifo[1] = drv1(fdctrl)->track;
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fdctrl->fifo[2] = 0;
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fdctrl->fifo[3] = 0;
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/* timers */
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fdctrl->fifo[4] = fdctrl->timer0;
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fdctrl->fifo[5] = (fdctrl->timer1 << 1) | fdctrl->dma_en;
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fdctrl->fifo[6] = cur_drv->last_sect;
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fdctrl->fifo[7] = (fdctrl->lock << 7) |
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(cur_drv->perpendicular << 2);
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fdctrl->fifo[8] = fdctrl->config;
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fdctrl->fifo[9] = fdctrl->precomp_trk;
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fdctrl_set_fifo(fdctrl, 10, 0);
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}
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static void fdctrl_handle_version (fdctrl_t *fdctrl, int direction)
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{
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/* Controller's version */
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fdctrl->fifo[0] = fdctrl->version;
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fdctrl_set_fifo(fdctrl, 1, 1);
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}
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static void fdctrl_handle_partid (fdctrl_t *fdctrl, int direction)
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{
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fdctrl->fifo[0] = 0x41; /* Stepping 1 */
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fdctrl_set_fifo(fdctrl, 1, 0);
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}
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static void fdctrl_handle_restore (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv = get_cur_drv(fdctrl);
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/* Drives position */
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drv0(fdctrl)->track = fdctrl->fifo[3];
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drv1(fdctrl)->track = fdctrl->fifo[4];
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/* timers */
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fdctrl->timer0 = fdctrl->fifo[7];
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fdctrl->timer1 = fdctrl->fifo[8];
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cur_drv->last_sect = fdctrl->fifo[9];
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fdctrl->lock = fdctrl->fifo[10] >> 7;
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cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
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fdctrl->config = fdctrl->fifo[11];
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fdctrl->precomp_trk = fdctrl->fifo[12];
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fdctrl->pwrd = fdctrl->fifo[13];
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fdctrl_reset_fifo(fdctrl);
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}
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static void fdctrl_handle_save (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv = get_cur_drv(fdctrl);
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fdctrl->fifo[0] = 0;
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fdctrl->fifo[1] = 0;
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/* Drives position */
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fdctrl->fifo[2] = drv0(fdctrl)->track;
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fdctrl->fifo[3] = drv1(fdctrl)->track;
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fdctrl->fifo[4] = 0;
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fdctrl->fifo[5] = 0;
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/* timers */
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fdctrl->fifo[6] = fdctrl->timer0;
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fdctrl->fifo[7] = fdctrl->timer1;
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fdctrl->fifo[8] = cur_drv->last_sect;
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fdctrl->fifo[9] = (fdctrl->lock << 7) |
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(cur_drv->perpendicular << 2);
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fdctrl->fifo[10] = fdctrl->config;
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fdctrl->fifo[11] = fdctrl->precomp_trk;
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fdctrl->fifo[12] = fdctrl->pwrd;
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fdctrl->fifo[13] = 0;
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fdctrl->fifo[14] = 0;
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fdctrl_set_fifo(fdctrl, 15, 1);
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}
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static void fdctrl_handle_readid (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv = get_cur_drv(fdctrl);
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/* XXX: should set main status register to busy */
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cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
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qemu_mod_timer(fdctrl->result_timer,
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qemu_get_clock(vm_clock) + (ticks_per_sec / 50));
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}
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static void fdctrl_handle_format_track (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv;
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fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
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cur_drv = get_cur_drv(fdctrl);
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fdctrl->data_state |= FD_STATE_FORMAT;
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if (fdctrl->fifo[0] & 0x80)
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fdctrl->data_state |= FD_STATE_MULTI;
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else
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fdctrl->data_state &= ~FD_STATE_MULTI;
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fdctrl->data_state &= ~FD_STATE_SEEK;
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cur_drv->bps =
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fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
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#if 0
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cur_drv->last_sect =
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cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
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fdctrl->fifo[3] / 2;
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#else
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cur_drv->last_sect = fdctrl->fifo[3];
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#endif
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/* TODO: implement format using DMA expected by the Bochs BIOS
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* and Linux fdformat (read 3 bytes per sector via DMA and fill
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* the sector with the specified fill byte
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*/
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fdctrl->data_state &= ~FD_STATE_FORMAT;
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fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
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}
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static void fdctrl_handle_specify (fdctrl_t *fdctrl, int direction)
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{
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fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
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fdctrl->timer1 = fdctrl->fifo[2] >> 1;
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fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
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/* No result back */
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fdctrl_reset_fifo(fdctrl);
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}
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static void fdctrl_handle_sense_drive_status (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv;
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fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
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cur_drv = get_cur_drv(fdctrl);
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cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
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/* 1 Byte status back */
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fdctrl->fifo[0] = (cur_drv->ro << 6) |
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(cur_drv->track == 0 ? 0x10 : 0x00) |
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(cur_drv->head << 2) |
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fdctrl->cur_drv |
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0x28;
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fdctrl_set_fifo(fdctrl, 1, 0);
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}
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static void fdctrl_handle_recalibrate (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv;
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fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
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cur_drv = get_cur_drv(fdctrl);
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fd_recalibrate(cur_drv);
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fdctrl_reset_fifo(fdctrl);
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/* Raise Interrupt */
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fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
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}
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static void fdctrl_handle_sense_interrupt_status (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv = get_cur_drv(fdctrl);
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#if 0
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fdctrl->fifo[0] =
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fdctrl->int_status | (cur_drv->head << 2) | fdctrl->cur_drv;
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#else
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/* XXX: int_status handling is broken for read/write
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commands, so we do this hack. It should be suppressed
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ASAP */
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fdctrl->fifo[0] =
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0x20 | (cur_drv->head << 2) | fdctrl->cur_drv;
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#endif
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fdctrl->fifo[1] = cur_drv->track;
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fdctrl_set_fifo(fdctrl, 2, 0);
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fdctrl_reset_irq(fdctrl);
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fdctrl->int_status = FD_SR0_RDYCHG;
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}
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static void fdctrl_handle_seek (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv;
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fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
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cur_drv = get_cur_drv(fdctrl);
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fd_start(cur_drv);
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if (fdctrl->fifo[2] <= cur_drv->track)
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cur_drv->dir = 1;
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else
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cur_drv->dir = 0;
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fdctrl_reset_fifo(fdctrl);
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if (fdctrl->fifo[2] > cur_drv->max_track) {
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fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
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} else {
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cur_drv->track = fdctrl->fifo[2];
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/* Raise Interrupt */
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fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
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}
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}
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static void fdctrl_handle_perpendicular_mode (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv = get_cur_drv(fdctrl);
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if (fdctrl->fifo[1] & 0x80)
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cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
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/* No result back */
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fdctrl_reset_fifo(fdctrl);
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}
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static void fdctrl_handle_configure (fdctrl_t *fdctrl, int direction)
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{
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fdctrl->config = fdctrl->fifo[2];
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fdctrl->precomp_trk = fdctrl->fifo[3];
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/* No result back */
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fdctrl_reset_fifo(fdctrl);
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}
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static void fdctrl_handle_powerdown_mode (fdctrl_t *fdctrl, int direction)
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{
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fdctrl->pwrd = fdctrl->fifo[1];
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fdctrl->fifo[0] = fdctrl->fifo[1];
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fdctrl_set_fifo(fdctrl, 1, 1);
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}
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static void fdctrl_handle_option (fdctrl_t *fdctrl, int direction)
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{
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/* No result back */
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fdctrl_reset_fifo(fdctrl);
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}
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static void fdctrl_handle_drive_specification_command (fdctrl_t *fdctrl, int direction)
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{
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fdrive_t *cur_drv = get_cur_drv(fdctrl);
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if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
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/* Command parameters done */
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if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
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fdctrl->fifo[0] = fdctrl->fifo[1];
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fdctrl->fifo[2] = 0;
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fdctrl->fifo[3] = 0;
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fdctrl_set_fifo(fdctrl, 4, 1);
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} else {
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fdctrl_reset_fifo(fdctrl);
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}
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} else if (fdctrl->data_len > 7) {
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/* ERROR */
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fdctrl->fifo[0] = 0x80 |
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(cur_drv->head << 2) | fdctrl->cur_drv;
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fdctrl_set_fifo(fdctrl, 1, 1);
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}
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}
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static void fdctrl_handle_relative_seek_out (fdctrl_t *fdctrl, int direction)
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{
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|
fdrive_t *cur_drv = get_cur_drv(fdctrl);
|
||||||
|
|
||||||
|
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
|
||||||
|
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;
|
||||||
|
} else {
|
||||||
|
cur_drv->track += fdctrl->fifo[2];
|
||||||
|
}
|
||||||
|
fdctrl_reset_fifo(fdctrl);
|
||||||
|
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void fdctrl_handle_relative_seek_in (fdctrl_t *fdctrl, int direction)
|
||||||
|
{
|
||||||
|
fdrive_t *cur_drv = get_cur_drv(fdctrl);
|
||||||
|
|
||||||
|
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
|
||||||
|
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;
|
||||||
|
} else {
|
||||||
|
cur_drv->track -= fdctrl->fifo[2];
|
||||||
|
}
|
||||||
|
fdctrl_reset_fifo(fdctrl);
|
||||||
|
/* Raise Interrupt */
|
||||||
|
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
|
||||||
|
}
|
||||||
|
|
||||||
static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
|
static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
|
||||||
{
|
{
|
||||||
fdrive_t *cur_drv;
|
fdrive_t *cur_drv;
|
||||||
|
int pos;
|
||||||
|
static const struct {
|
||||||
|
uint8_t value;
|
||||||
|
uint8_t mask;
|
||||||
|
const char* name;
|
||||||
|
int parameters;
|
||||||
|
void (*handler)(fdctrl_t *fdctrl, int direction);
|
||||||
|
int parameter;
|
||||||
|
} commands[] = {
|
||||||
|
{ 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 */
|
||||||
|
};
|
||||||
|
|
||||||
cur_drv = get_cur_drv(fdctrl);
|
cur_drv = get_cur_drv(fdctrl);
|
||||||
/* Reset mode */
|
/* Reset mode */
|
||||||
@ -1473,258 +1803,18 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
|
|||||||
}
|
}
|
||||||
if (fdctrl->data_pos == 0) {
|
if (fdctrl->data_pos == 0) {
|
||||||
/* Command */
|
/* Command */
|
||||||
switch (value & 0x5F) {
|
for (pos = 0; pos < sizeof(commands)/sizeof(commands[0]); pos++) {
|
||||||
case FD_CMD_READ:
|
if ((value & commands[pos].mask) == commands[pos].value) {
|
||||||
/* READ variants */
|
FLOPPY_DPRINTF("%s command\n", commands[pos].name);
|
||||||
FLOPPY_DPRINTF("READ command\n");
|
fdctrl->data_len = commands[pos].parameters + 1;
|
||||||
/* 8 parameters cmd */
|
goto enqueue;
|
||||||
fdctrl->data_len = 9;
|
}
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_READ_DELETED:
|
|
||||||
/* READ_DELETED variants */
|
|
||||||
FLOPPY_DPRINTF("READ_DELETED command\n");
|
|
||||||
/* 8 parameters cmd */
|
|
||||||
fdctrl->data_len = 9;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_SCAN_EQUAL:
|
|
||||||
/* SCAN_EQUAL variants */
|
|
||||||
FLOPPY_DPRINTF("SCAN_EQUAL command\n");
|
|
||||||
/* 8 parameters cmd */
|
|
||||||
fdctrl->data_len = 9;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_VERIFY:
|
|
||||||
/* VERIFY variants */
|
|
||||||
FLOPPY_DPRINTF("VERIFY command\n");
|
|
||||||
/* 8 parameters cmd */
|
|
||||||
fdctrl->data_len = 9;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_SCAN_LOW_OR_EQUAL:
|
|
||||||
/* SCAN_LOW_OR_EQUAL variants */
|
|
||||||
FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
|
|
||||||
/* 8 parameters cmd */
|
|
||||||
fdctrl->data_len = 9;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_SCAN_HIGH_OR_EQUAL:
|
|
||||||
/* 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 FD_CMD_WRITE:
|
|
||||||
/* WRITE variants */
|
|
||||||
FLOPPY_DPRINTF("WRITE command\n");
|
|
||||||
/* 8 parameters cmd */
|
|
||||||
fdctrl->data_len = 9;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_WRITE_DELETED:
|
|
||||||
/* WRITE_DELETED variants */
|
|
||||||
FLOPPY_DPRINTF("WRITE_DELETED command\n");
|
|
||||||
/* 8 parameters cmd */
|
|
||||||
fdctrl->data_len = 9;
|
|
||||||
goto enqueue;
|
|
||||||
default:
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
switch (value) {
|
|
||||||
case FD_CMD_SPECIFY:
|
|
||||||
/* SPECIFY */
|
|
||||||
FLOPPY_DPRINTF("SPECIFY command\n");
|
|
||||||
/* 1 parameter cmd */
|
|
||||||
fdctrl->data_len = 3;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_SENSE_DRIVE_STATUS:
|
|
||||||
/* SENSE_DRIVE_STATUS */
|
|
||||||
FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
|
|
||||||
/* 1 parameter cmd */
|
|
||||||
fdctrl->data_len = 2;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_RECALIBRATE:
|
|
||||||
/* RECALIBRATE */
|
|
||||||
FLOPPY_DPRINTF("RECALIBRATE command\n");
|
|
||||||
/* 1 parameter cmd */
|
|
||||||
fdctrl->data_len = 2;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_SENSE_INTERRUPT_STATUS:
|
|
||||||
/* SENSE_INTERRUPT_STATUS */
|
|
||||||
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 = FD_SR0_RDYCHG;
|
|
||||||
return;
|
|
||||||
case FD_CMD_DUMPREG:
|
|
||||||
/* DUMPREG */
|
|
||||||
FLOPPY_DPRINTF("DUMPREG command\n");
|
|
||||||
/* Drives position */
|
|
||||||
fdctrl->fifo[0] = drv0(fdctrl)->track;
|
|
||||||
fdctrl->fifo[1] = drv1(fdctrl)->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(fdctrl, 10, 0);
|
|
||||||
return;
|
|
||||||
case FD_CMD_SEEK:
|
|
||||||
/* SEEK */
|
|
||||||
FLOPPY_DPRINTF("SEEK command\n");
|
|
||||||
/* 2 parameters cmd */
|
|
||||||
fdctrl->data_len = 3;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_VERSION:
|
|
||||||
/* VERSION */
|
|
||||||
FLOPPY_DPRINTF("VERSION command\n");
|
|
||||||
/* No parameters cmd */
|
|
||||||
/* Controller's version */
|
|
||||||
fdctrl->fifo[0] = fdctrl->version;
|
|
||||||
fdctrl_set_fifo(fdctrl, 1, 1);
|
|
||||||
return;
|
|
||||||
case FD_CMD_PERPENDICULAR_MODE:
|
|
||||||
/* PERPENDICULAR_MODE */
|
|
||||||
FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
|
|
||||||
/* 1 parameter cmd */
|
|
||||||
fdctrl->data_len = 2;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_CONFIGURE:
|
|
||||||
/* CONFIGURE */
|
|
||||||
FLOPPY_DPRINTF("CONFIGURE command\n");
|
|
||||||
/* 3 parameters cmd */
|
|
||||||
fdctrl->data_len = 4;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_UNLOCK:
|
|
||||||
/* UNLOCK */
|
|
||||||
FLOPPY_DPRINTF("UNLOCK command\n");
|
|
||||||
/* No parameters cmd */
|
|
||||||
fdctrl->lock = 0;
|
|
||||||
fdctrl->fifo[0] = 0;
|
|
||||||
fdctrl_set_fifo(fdctrl, 1, 0);
|
|
||||||
return;
|
|
||||||
case FD_CMD_POWERDOWN_MODE:
|
|
||||||
/* POWERDOWN_MODE */
|
|
||||||
FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
|
|
||||||
/* 2 parameters cmd */
|
|
||||||
fdctrl->data_len = 3;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_PART_ID:
|
|
||||||
/* PART_ID */
|
|
||||||
FLOPPY_DPRINTF("PART_ID command\n");
|
|
||||||
/* No parameters cmd */
|
|
||||||
fdctrl->fifo[0] = 0x41; /* Stepping 1 */
|
|
||||||
fdctrl_set_fifo(fdctrl, 1, 0);
|
|
||||||
return;
|
|
||||||
case FD_CMD_SAVE:
|
|
||||||
/* SAVE */
|
|
||||||
FLOPPY_DPRINTF("SAVE command\n");
|
|
||||||
/* No parameters cmd */
|
|
||||||
fdctrl->fifo[0] = 0;
|
|
||||||
fdctrl->fifo[1] = 0;
|
|
||||||
/* Drives position */
|
|
||||||
fdctrl->fifo[2] = drv0(fdctrl)->track;
|
|
||||||
fdctrl->fifo[3] = drv1(fdctrl)->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(fdctrl, 15, 1);
|
|
||||||
return;
|
|
||||||
case FD_CMD_OPTION:
|
|
||||||
/* OPTION */
|
|
||||||
FLOPPY_DPRINTF("OPTION command\n");
|
|
||||||
/* 1 parameter cmd */
|
|
||||||
fdctrl->data_len = 2;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_READ_TRACK:
|
|
||||||
/* READ_TRACK */
|
|
||||||
FLOPPY_DPRINTF("READ_TRACK command\n");
|
|
||||||
/* 8 parameters cmd */
|
|
||||||
fdctrl->data_len = 9;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_READ_ID:
|
|
||||||
/* READ_ID */
|
|
||||||
FLOPPY_DPRINTF("READ_ID command\n");
|
|
||||||
/* 1 parameter cmd */
|
|
||||||
fdctrl->data_len = 2;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_RESTORE:
|
|
||||||
/* RESTORE */
|
|
||||||
FLOPPY_DPRINTF("RESTORE command\n");
|
|
||||||
/* 17 parameters cmd */
|
|
||||||
fdctrl->data_len = 18;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_FORMAT_TRACK:
|
|
||||||
/* FORMAT_TRACK */
|
|
||||||
FLOPPY_DPRINTF("FORMAT_TRACK command\n");
|
|
||||||
/* 5 parameters cmd */
|
|
||||||
fdctrl->data_len = 6;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_DRIVE_SPECIFICATION_COMMAND:
|
|
||||||
/* DRIVE_SPECIFICATION_COMMAND */
|
|
||||||
FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
|
|
||||||
/* 5 parameters cmd */
|
|
||||||
fdctrl->data_len = 6;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_RELATIVE_SEEK_OUT:
|
|
||||||
/* RELATIVE_SEEK_OUT */
|
|
||||||
FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
|
|
||||||
/* 2 parameters cmd */
|
|
||||||
fdctrl->data_len = 3;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_LOCK:
|
|
||||||
/* LOCK */
|
|
||||||
FLOPPY_DPRINTF("LOCK command\n");
|
|
||||||
/* No parameters cmd */
|
|
||||||
fdctrl->lock = 1;
|
|
||||||
fdctrl->fifo[0] = 0x10;
|
|
||||||
fdctrl_set_fifo(fdctrl, 1, 1);
|
|
||||||
return;
|
|
||||||
case FD_CMD_FORMAT_AND_WRITE:
|
|
||||||
/* FORMAT_AND_WRITE */
|
|
||||||
FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
|
|
||||||
/* 10 parameters cmd */
|
|
||||||
fdctrl->data_len = 11;
|
|
||||||
goto enqueue;
|
|
||||||
case FD_CMD_RELATIVE_SEEK_IN:
|
|
||||||
/* 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(fdctrl);
|
|
||||||
return;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Unknown command */
|
||||||
|
FLOPPY_ERROR("unknown command: 0x%02x\n", value);
|
||||||
|
fdctrl_unimplemented(fdctrl, 0);
|
||||||
|
return;
|
||||||
}
|
}
|
||||||
enqueue:
|
enqueue:
|
||||||
FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
|
FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
|
||||||
@ -1737,259 +1827,13 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
|
|||||||
fdctrl_format_sector(fdctrl);
|
fdctrl_format_sector(fdctrl);
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
switch (fdctrl->fifo[0] & 0x1F) {
|
|
||||||
case FD_CMD_READ & 0x1F:
|
for (pos = 0; pos < sizeof(commands)/sizeof(commands[0]); pos++) {
|
||||||
{
|
if ((fdctrl->fifo[0] & commands[pos].mask) == commands[pos].value) {
|
||||||
/* READ variants */
|
FLOPPY_DPRINTF("treat %s command\n", commands[pos].name);
|
||||||
FLOPPY_DPRINTF("treat READ command\n");
|
(*commands[pos].handler)(fdctrl, commands[pos].parameter);
|
||||||
fdctrl_start_transfer(fdctrl, FD_DIR_READ);
|
break;
|
||||||
return;
|
|
||||||
}
|
}
|
||||||
case FD_CMD_READ_DELETED & 0x1F:
|
|
||||||
/* READ_DELETED variants */
|
|
||||||
// FLOPPY_DPRINTF("treat READ_DELETED command\n");
|
|
||||||
FLOPPY_ERROR("treat READ_DELETED command\n");
|
|
||||||
fdctrl_start_transfer_del(fdctrl, FD_DIR_READ);
|
|
||||||
return;
|
|
||||||
case FD_CMD_VERIFY & 0x1F:
|
|
||||||
/* VERIFY variants */
|
|
||||||
// FLOPPY_DPRINTF("treat VERIFY command\n");
|
|
||||||
FLOPPY_ERROR("treat VERIFY command\n");
|
|
||||||
fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
|
|
||||||
return;
|
|
||||||
case FD_CMD_SCAN_EQUAL & 0x1F:
|
|
||||||
/* SCAN_EQUAL variants */
|
|
||||||
// FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
|
|
||||||
FLOPPY_ERROR("treat SCAN_EQUAL command\n");
|
|
||||||
fdctrl_start_transfer(fdctrl, FD_DIR_SCANE);
|
|
||||||
return;
|
|
||||||
case FD_CMD_SCAN_LOW_OR_EQUAL & 0x1F:
|
|
||||||
/* 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(fdctrl, FD_DIR_SCANL);
|
|
||||||
return;
|
|
||||||
case FD_CMD_SCAN_HIGH_OR_EQUAL & 0x1F:
|
|
||||||
/* 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(fdctrl, FD_DIR_SCANH);
|
|
||||||
return;
|
|
||||||
default:
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
switch (fdctrl->fifo[0] & 0x3F) {
|
|
||||||
case FD_CMD_WRITE & 0x3F:
|
|
||||||
/* WRITE variants */
|
|
||||||
FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl->fifo[0]);
|
|
||||||
fdctrl_start_transfer(fdctrl, FD_DIR_WRITE);
|
|
||||||
return;
|
|
||||||
case FD_CMD_WRITE_DELETED & 0x3F:
|
|
||||||
/* WRITE_DELETED variants */
|
|
||||||
// FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
|
|
||||||
FLOPPY_ERROR("treat WRITE_DELETED command\n");
|
|
||||||
fdctrl_start_transfer_del(fdctrl, FD_DIR_WRITE);
|
|
||||||
return;
|
|
||||||
default:
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
switch (fdctrl->fifo[0]) {
|
|
||||||
case FD_CMD_SPECIFY:
|
|
||||||
/* SPECIFY */
|
|
||||||
FLOPPY_DPRINTF("treat SPECIFY command\n");
|
|
||||||
fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
|
|
||||||
fdctrl->timer1 = fdctrl->fifo[2] >> 1;
|
|
||||||
fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
|
|
||||||
/* No result back */
|
|
||||||
fdctrl_reset_fifo(fdctrl);
|
|
||||||
break;
|
|
||||||
case FD_CMD_SENSE_DRIVE_STATUS:
|
|
||||||
/* SENSE_DRIVE_STATUS */
|
|
||||||
FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
|
|
||||||
fdctrl->cur_drv = 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) |
|
|
||||||
fdctrl->cur_drv |
|
|
||||||
0x28;
|
|
||||||
fdctrl_set_fifo(fdctrl, 1, 0);
|
|
||||||
break;
|
|
||||||
case FD_CMD_RECALIBRATE:
|
|
||||||
/* RECALIBRATE */
|
|
||||||
FLOPPY_DPRINTF("treat RECALIBRATE command\n");
|
|
||||||
fdctrl->cur_drv = 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);
|
|
||||||
break;
|
|
||||||
case FD_CMD_SEEK:
|
|
||||||
/* SEEK */
|
|
||||||
FLOPPY_DPRINTF("treat SEEK command\n");
|
|
||||||
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
|
|
||||||
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);
|
|
||||||
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);
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
case FD_CMD_PERPENDICULAR_MODE:
|
|
||||||
/* 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(fdctrl);
|
|
||||||
break;
|
|
||||||
case FD_CMD_CONFIGURE:
|
|
||||||
/* CONFIGURE */
|
|
||||||
FLOPPY_DPRINTF("treat CONFIGURE command\n");
|
|
||||||
fdctrl->config = fdctrl->fifo[2];
|
|
||||||
fdctrl->precomp_trk = fdctrl->fifo[3];
|
|
||||||
/* No result back */
|
|
||||||
fdctrl_reset_fifo(fdctrl);
|
|
||||||
break;
|
|
||||||
case FD_CMD_POWERDOWN_MODE:
|
|
||||||
/* POWERDOWN_MODE */
|
|
||||||
FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
|
|
||||||
fdctrl->pwrd = fdctrl->fifo[1];
|
|
||||||
fdctrl->fifo[0] = fdctrl->fifo[1];
|
|
||||||
fdctrl_set_fifo(fdctrl, 1, 1);
|
|
||||||
break;
|
|
||||||
case FD_CMD_OPTION:
|
|
||||||
/* OPTION */
|
|
||||||
FLOPPY_DPRINTF("treat OPTION command\n");
|
|
||||||
/* No result back */
|
|
||||||
fdctrl_reset_fifo(fdctrl);
|
|
||||||
break;
|
|
||||||
case FD_CMD_READ_TRACK:
|
|
||||||
/* READ_TRACK */
|
|
||||||
FLOPPY_DPRINTF("treat READ_TRACK command\n");
|
|
||||||
FLOPPY_ERROR("treat READ_TRACK command\n");
|
|
||||||
fdctrl_start_transfer(fdctrl, FD_DIR_READ);
|
|
||||||
break;
|
|
||||||
case FD_CMD_READ_ID:
|
|
||||||
/* READ_ID */
|
|
||||||
FLOPPY_DPRINTF("treat READ_ID command\n");
|
|
||||||
/* 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 FD_CMD_RESTORE:
|
|
||||||
/* RESTORE */
|
|
||||||
FLOPPY_DPRINTF("treat RESTORE command\n");
|
|
||||||
/* Drives position */
|
|
||||||
drv0(fdctrl)->track = fdctrl->fifo[3];
|
|
||||||
drv1(fdctrl)->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(fdctrl);
|
|
||||||
break;
|
|
||||||
case FD_CMD_FORMAT_TRACK:
|
|
||||||
/* FORMAT_TRACK */
|
|
||||||
FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
|
|
||||||
fdctrl->cur_drv = 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);
|
|
||||||
break;
|
|
||||||
case FD_CMD_DRIVE_SPECIFICATION_COMMAND:
|
|
||||||
/* 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(fdctrl, 4, 1);
|
|
||||||
} else {
|
|
||||||
fdctrl_reset_fifo(fdctrl);
|
|
||||||
}
|
|
||||||
} else if (fdctrl->data_len > 7) {
|
|
||||||
/* ERROR */
|
|
||||||
fdctrl->fifo[0] = 0x80 |
|
|
||||||
(cur_drv->head << 2) | fdctrl->cur_drv;
|
|
||||||
fdctrl_set_fifo(fdctrl, 1, 1);
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
case FD_CMD_RELATIVE_SEEK_OUT:
|
|
||||||
/* RELATIVE_SEEK_OUT */
|
|
||||||
FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
|
|
||||||
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
|
|
||||||
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;
|
|
||||||
} else {
|
|
||||||
cur_drv->track += fdctrl->fifo[2];
|
|
||||||
}
|
|
||||||
fdctrl_reset_fifo(fdctrl);
|
|
||||||
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
|
|
||||||
break;
|
|
||||||
case FD_CMD_FORMAT_AND_WRITE:
|
|
||||||
/* FORMAT_AND_WRITE */
|
|
||||||
FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
|
|
||||||
FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
|
|
||||||
fdctrl_unimplemented(fdctrl);
|
|
||||||
break;
|
|
||||||
case FD_CMD_RELATIVE_SEEK_IN:
|
|
||||||
/* RELATIVE_SEEK_IN */
|
|
||||||
FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
|
|
||||||
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
|
|
||||||
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;
|
|
||||||
} else {
|
|
||||||
cur_drv->track -= fdctrl->fifo[2];
|
|
||||||
}
|
|
||||||
fdctrl_reset_fifo(fdctrl);
|
|
||||||
/* Raise Interrupt */
|
|
||||||
fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
|
|
||||||
break;
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user