The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*      $NetBSD: smc93cx6var.h,v 1.9 2005/12/11 12:21:28 christos Exp $ */
    2 
    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.
   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  * Alternatively, this software may be distributed under the terms of the
   21  * the GNU Public License ("GPL").
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   26  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   27  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   33  * SUCH DAMAGE.
   34  *
   35  * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx.c,v 1.40 2000/01/07 23:08:17 gibbs Exp $
   36  */
   37 
   38 #include <sys/param.h>
   39 #if !defined(__NetBSD__)
   40 #include <sys/systm.h>
   41 #endif
   42 
   43 typedef enum {
   44         C46 = 6,
   45         C56_66 = 8
   46 } seeprom_chip_t;
   47 
   48 struct seeprom_descriptor {
   49         bus_space_tag_t sd_tag;
   50         bus_space_handle_t sd_bsh;
   51         bus_size_t sd_regsize;
   52         bus_size_t sd_control_offset;
   53         bus_size_t sd_status_offset;
   54         bus_size_t sd_dataout_offset;
   55         seeprom_chip_t sd_chip;
   56         u_int32_t sd_MS;
   57         u_int32_t sd_RDY;
   58         u_int32_t sd_CS;
   59         u_int32_t sd_CK;
   60         u_int32_t sd_DO;
   61         u_int32_t sd_DI;
   62 };
   63 
   64 /*
   65  * This function will read count 16-bit words from the serial EEPROM and
   66  * return their value in buf.  The port address of the aic7xxx serial EEPROM
   67  * control register is passed in as offset.  The following parameters are
   68  * also passed in:
   69  *
   70  *   CS  - Chip select
   71  *   CK  - Clock
   72  *   DO  - Data out
   73  *   DI  - Data in
   74  *   RDY - SEEPROM ready
   75  *   MS  - Memory port mode select
   76  *
   77  *  A failed read attempt returns 0, and a successful read returns 1.
   78  */
   79 
   80 /* XXX bus barriers */
   81 #define SEEPROM_INB(sd) \
   82         (((sd)->sd_regsize == 4) \
   83             ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
   84                   (sd)->sd_control_offset) \
   85             : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
   86                   (sd)->sd_control_offset))
   87 
   88 #define SEEPROM_OUTB(sd, value) do { \
   89         if ((sd)->sd_regsize == 4) \
   90                 bus_space_write_4((sd)->sd_tag, (sd)->sd_bsh, \
   91                     (sd)->sd_control_offset, (value)); \
   92         else \
   93                 bus_space_write_1((sd)->sd_tag, (sd)->sd_bsh, \
   94                     (sd)->sd_control_offset, (u_int8_t) (value)); \
   95 } while (0)
   96 
   97 #define SEEPROM_STATUS_INB(sd) \
   98         (((sd)->sd_regsize == 4) \
   99             ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
  100                   (sd)->sd_status_offset) \
  101             : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
  102                   (sd)->sd_status_offset))
  103 
  104 #define SEEPROM_DATA_INB(sd) \
  105         (((sd)->sd_regsize == 4) \
  106             ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
  107                   (sd)->sd_dataout_offset) \
  108             : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
  109                   (sd)->sd_dataout_offset))
  110 
  111 int read_seeprom(struct seeprom_descriptor *, u_int16_t *,
  112     bus_size_t, bus_size_t);

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