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Annotation of sys/arch/sparc/dev/fdreg.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: fdreg.h,v 1.5 2004/09/22 22:12:58 miod Exp $  */
        !             2: /*     $NetBSD: fdreg.h,v 1.6 1997/05/02 13:03:44 pk Exp $     */
        !             3:
        !             4: /*-
        !             5:  * Copyright (c) 1991 The Regents of the University of California.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. Neither the name of the University nor the names of its contributors
        !            17:  *    may be used to endorse or promote products derived from this software
        !            18:  *    without specific prior written permission.
        !            19:  *
        !            20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            30:  * SUCH DAMAGE.
        !            31:  *
        !            32:  *     @(#)fdreg.h     7.1 (Berkeley) 5/9/91
        !            33:  */
        !            34:
        !            35: /*
        !            36:  * AT floppy controller registers and bitfields
        !            37:  */
        !            38:
        !            39: /* uses NEC765 controller */
        !            40: #include <dev/ic/nec765reg.h>
        !            41:
        !            42: #ifndef _LOCORE
        !            43: struct fdreg_77 {
        !            44:        u_int8_t        fd_statusA;
        !            45:        u_int8_t        fd_statusB;
        !            46:        u_int8_t        fd_dor;         /* Digital Output Register (R/W) */
        !            47:        u_int8_t        fd_tdr;         /* Tape Control Register (R/W) */
        !            48:        u_int8_t        fd_msr;         /* Main Status Register (R) */
        !            49: #define fd_drs         fd_msr          /* Data Rate Select Register (W) */
        !            50:        u_int8_t        fd_fifo;        /* Data (FIFO) register (R/W) */
        !            51:        u_int8_t        fd_reserved;
        !            52:        u_int8_t        fd_dir;         /* Digital Input Register (R) */
        !            53: #define fd_ccr         fd_dir          /* Configuration Control (W) */
        !            54: };
        !            55:
        !            56: struct fdreg_72 {
        !            57:        u_int8_t        fd_msr;         /* Main Status Register (R) */
        !            58: #if already_a_define
        !            59: #define fd_drs fd_msr                  /* Data Rate Select Register (W) */
        !            60: #endif
        !            61:        u_int8_t        fd_fifo;        /* Data (FIFO) register (R/W) */
        !            62: };
        !            63:
        !            64: union fdreg {
        !            65:        struct fdreg_72 fun72;
        !            66:        struct fdreg_77 fun77;
        !            67: };
        !            68: #endif
        !            69:
        !            70: /* Data Select Register bits */
        !            71: #define DRS_RESET      0x80
        !            72: #define DRS_POWER      0x40
        !            73: #define DRS_PLL                0x20
        !            74: #define        FDC_500KBPS     0x00            /*   500KBPS MFM drive transfer rate */
        !            75: #define        FDC_300KBPS     0x01            /*   300KBPS MFM drive transfer rate */
        !            76: #define        FDC_250KBPS     0x02            /*   250KBPS MFM drive transfer rate */
        !            77: #define        FDC_125KBPS     0x03            /*   125KBPS  FM drive transfer rate */
        !            78:
        !            79: /* Digital Output Register bits (modified on suns) */
        !            80: #define        FDO_DS          0x01            /*  floppy device select (neg) */
        !            81: #define        FDO_FRST        0x04            /*  floppy controller reset (neg) */
        !            82: #define        FDO_FDMAEN      0x08            /*  enable floppy DMA and Interrupt */
        !            83: #define        FDO_MOEN(n)     ((1 << n) << 4) /* motor enable */
        !            84: #define FDO_DEN                0x40            /* Density select */
        !            85: #define FDO_EJ         0x80            /* Eject disk */
        !            86:
        !            87: /* Digital Input Register bits */
        !            88: #define        FDI_DCHG        0x80            /*   diskette has been changed */
        !            89:
        !            90: /* XXX - find a place for these... */
        !            91: #define NE7CMD_CFG             0x13
        !            92: #define CFG_EIS                        0x40
        !            93: #define CFG_EFIFO              0x20
        !            94: #define CFG_POLL               0x10
        !            95: #define CFG_THRHLD_MASK                0x0f
        !            96:
        !            97: #define NE7CMD_LOCK            0x14
        !            98: #define CFG_LOCK               0x80
        !            99:
        !           100: #define NE7CMD_MOTOR           0x0b
        !           101: #define MOTOR_ON               0x80
        !           102:
        !           103: #define NE7CMD_DUMPREG         0x0e
        !           104: #define NE7CMD_VERSION         0x10
        !           105:
        !           106: #define ST1_OVERRUN            0x10
        !           107:
        !           108: #define NE7_SPECIFY_NODMA      0x01