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Annotation of sys/dev/ic/smc93cx6var.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: smc93cx6var.h,v 1.16 2003/08/15 23:41:47 fgsch Exp $  */
        !             2: /* $FreeBSD: sys/dev/aic7xxx/93cx6.h,v 1.3 1999/12/29 04:35:33 peter Exp $ */
        !             3: /*
        !             4:  * Interface to the 93C46 serial EEPROM that is used to store BIOS
        !             5:  * settings for the aic7xxx based adaptec SCSI controllers.  It can
        !             6:  * also be used for 93C26 and 93C06 serial EEPROMS.
        !             7:  *
        !             8:  * Copyright (c) 1994, 1995 Justin T. Gibbs.
        !             9:  * All rights reserved.
        !            10:  *
        !            11:  * Redistribution and use in source and binary forms, with or without
        !            12:  * modification, are permitted provided that the following conditions
        !            13:  * are met:
        !            14:  * 1. Redistributions of source code must retain the above copyright
        !            15:  *    notice, this list of conditions, and the following disclaimer,
        !            16:  *    without modification, immediately at the beginning of the file.
        !            17:  * 2. The name of the author may not be used to endorse or promote products
        !            18:  *    derived from this software without specific prior written permission.
        !            19:  *
        !            20:  * Where this Software is combined with software released under the terms of
        !            21:  * the GNU Public License ("GPL") and the terms of the GPL would require the
        !            22:  * combined work to also be released under the terms of the GPL, the terms
        !            23:  * and conditions of this License will apply in addition to those of the
        !            24:  * GPL with the exception of any terms or conditions of this License that
        !            25:  * conflict with, or are expressly prohibited by, the GPL.
        !            26:  *
        !            27:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            28:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            29:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            30:  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
        !            31:  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            32:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            33:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            34:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            35:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            36:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            37:  * SUCH DAMAGE.
        !            38:  */
        !            39: #ifndef _SMC93CX6VAR_H_
        !            40: #define _SMC93CX6VAR_H_
        !            41:
        !            42: #include <sys/param.h>
        !            43:
        !            44: #ifdef _KERNEL
        !            45:
        !            46: typedef enum {
        !            47:        C46 = 6,
        !            48:        C56_66 = 8
        !            49: } seeprom_chip_t;
        !            50:
        !            51: struct seeprom_descriptor {
        !            52:        bus_space_tag_t sd_tag;
        !            53:        bus_space_handle_t sd_bsh;
        !            54:        bus_size_t sd_regsize;
        !            55:        bus_size_t sd_control_offset;
        !            56:        bus_size_t sd_status_offset;
        !            57:        bus_size_t sd_dataout_offset;
        !            58:        seeprom_chip_t sd_chip;
        !            59:        u_int16_t sd_MS;
        !            60:        u_int16_t sd_RDY;
        !            61:        u_int16_t sd_CS;
        !            62:        u_int16_t sd_CK;
        !            63:        u_int16_t sd_DO;
        !            64:        u_int16_t sd_DI;
        !            65: };
        !            66:
        !            67: /*
        !            68:  * This function will read count 16-bit words from the serial EEPROM and
        !            69:  * return their value in buf.  The port address of the aic7xxx serial EEPROM
        !            70:  * control register is passed in as offset.  The following parameters are
        !            71:  * also passed in:
        !            72:  *
        !            73:  *   CS  - Chip select
        !            74:  *   CK  - Clock
        !            75:  *   DO  - Data out
        !            76:  *   DI  - Data in
        !            77:  *   RDY - SEEPROM ready
        !            78:  *   MS  - Memory port mode select
        !            79:  *
        !            80:  *  A failed read attempt returns 0, and a successful read returns 1.
        !            81:  */
        !            82:
        !            83: #define        SEEPROM_INB(sd) \
        !            84:        (((sd)->sd_regsize == 4) \
        !            85:            ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
        !            86:                  (sd)->sd_control_offset) \
        !            87:            : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
        !            88:                  (sd)->sd_control_offset))
        !            89:
        !            90: #define        SEEPROM_OUTB(sd, value) \
        !            91: do { \
        !            92:        if ((sd)->sd_regsize == 4) \
        !            93:                bus_space_write_4((sd)->sd_tag, (sd)->sd_bsh, \
        !            94:                    (sd)->sd_control_offset, (value)); \
        !            95:        else \
        !            96:                bus_space_write_1((sd)->sd_tag, (sd)->sd_bsh, \
        !            97:                    (sd)->sd_control_offset, (u_int8_t) (value)); \
        !            98: } while(0)
        !            99:
        !           100: #define        SEEPROM_STATUS_INB(sd) \
        !           101:        (((sd)->sd_regsize == 4) \
        !           102:            ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
        !           103:                  (sd)->sd_status_offset) \
        !           104:            : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
        !           105:                  (sd)->sd_status_offset))
        !           106:
        !           107: #define        SEEPROM_DATA_INB(sd) \
        !           108:        (((sd)->sd_regsize == 4) \
        !           109:            ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
        !           110:                  (sd)->sd_dataout_offset) \
        !           111:            : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
        !           112:                  (sd)->sd_dataout_offset))
        !           113:
        !           114: int    read_seeprom(struct seeprom_descriptor *, u_int16_t *,
        !           115:             bus_size_t, bus_size_t);
        !           116:
        !           117: #endif /* _KERNEL */
        !           118: #endif /* _SMC93CX6VAR_H_ */