FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/smc93cx6var.h

     /*      $OpenBSD: smc93cx6var.h,v 1.17 2015/09/12 16:24:14 deraadt Exp $        */
     /* $FreeBSD: sys/dev/aic7xxx/93cx6.h,v 1.3 1999/12/29 04:35:33 peter Exp $ */
     /*
      * Interface to the 93C46 serial EEPROM that is used to store BIOS
      * settings for the aic7xxx based adaptec SCSI controllers.  It can
      * also be used for 93C26 and 93C06 serial EEPROMS.
      *
      * Copyright (c) 1994, 1995 Justin T. Gibbs.
      * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions, and the following disclaimer,
     *    without modification, immediately at the beginning of the file.
     * 2. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * Where this Software is combined with software released under the terms of 
     * the GNU Public License ("GPL") and the terms of the GPL would require the 
     * combined work to also be released under the terms of the GPL, the terms
     * and conditions of this License will apply in addition to those of the
     * GPL with the exception of any terms or conditions of this License that
     * conflict with, or are expressly prohibited by, the GPL.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    #ifndef _SMC93CX6VAR_H_
    #define _SMC93CX6VAR_H_
    
    #ifdef _KERNEL
    
    typedef enum {
            C46 = 6,
            C56_66 = 8
    } seeprom_chip_t;
    
    struct seeprom_descriptor {
            bus_space_tag_t sd_tag;
            bus_space_handle_t sd_bsh;
            bus_size_t sd_regsize;
            bus_size_t sd_control_offset;
            bus_size_t sd_status_offset;
            bus_size_t sd_dataout_offset;
            seeprom_chip_t sd_chip;
            u_int16_t sd_MS;
            u_int16_t sd_RDY;
            u_int16_t sd_CS;
            u_int16_t sd_CK;
            u_int16_t sd_DO;
            u_int16_t sd_DI;
    };
    
    /*
     * This function will read count 16-bit words from the serial EEPROM and
     * return their value in buf.  The port address of the aic7xxx serial EEPROM
     * control register is passed in as offset.  The following parameters are
     * also passed in:
     *
     *   CS  - Chip select
     *   CK  - Clock
     *   DO  - Data out
     *   DI  - Data in
     *   RDY - SEEPROM ready
     *   MS  - Memory port mode select
     *
     *  A failed read attempt returns 0, and a successful read returns 1.
     */
    
    #define SEEPROM_INB(sd) \
            (((sd)->sd_regsize == 4) \
                ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
                      (sd)->sd_control_offset) \
                : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
                      (sd)->sd_control_offset))
    
    #define SEEPROM_OUTB(sd, value) \
    do { \
            if ((sd)->sd_regsize == 4) \
                    bus_space_write_4((sd)->sd_tag, (sd)->sd_bsh, \
                        (sd)->sd_control_offset, (value)); \
            else \
                    bus_space_write_1((sd)->sd_tag, (sd)->sd_bsh, \
                        (sd)->sd_control_offset, (u_int8_t) (value)); \
    } while(0)
    
    #define SEEPROM_STATUS_INB(sd) \
            (((sd)->sd_regsize == 4) \
               ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
                     (sd)->sd_status_offset) \
               : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
                     (sd)->sd_status_offset))
   
   #define SEEPROM_DATA_INB(sd) \
           (((sd)->sd_regsize == 4) \
               ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
                     (sd)->sd_dataout_offset) \
               : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
                     (sd)->sd_dataout_offset))
   
   int     read_seeprom(struct seeprom_descriptor *, u_int16_t *,
                bus_size_t, bus_size_t);
   
   #endif /* _KERNEL */
   #endif /* _SMC93CX6VAR_H_ */

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