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/aic7xxx/aic7xxx_93cx6.h

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    1 /*-
    2  * Interface to the 93C46/56 serial EEPROM that is used to store BIOS
    3  * settings for the aic7xxx based adaptec SCSI controllers.  It can
    4  * also be used for 93C26 and 93C06 serial EEPROMS.
    5  *
    6  * Copyright (c) 1994, 1995, 2000 Justin T. Gibbs.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions, and the following disclaimer,
   14  *    without modification.
   15  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   16  *    substantially similar to the "NO WARRANTY" disclaimer below
   17  *    ("Disclaimer") and any redistribution must be conditioned upon
   18  *    including a substantially similar Disclaimer requirement for further
   19  *    binary redistribution.
   20  * 3. Neither the names of the above-listed copyright holders nor the names
   21  *    of any contributors may be used to endorse or promote products derived
   22  *    from this software without specific prior written permission.
   23  *
   24  * Alternatively, this software may be distributed under the terms of the
   25  * GNU General Public License ("GPL") version 2 as published by the Free
   26  * Software Foundation.
   27  *
   28  * NO WARRANTY
   29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   30  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   31  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
   32  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   33  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   37  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
   38  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   39  * POSSIBILITY OF SUCH DAMAGES.
   40  *
   41  * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_93cx6.h#12 $
   42  *
   43  * $FreeBSD$
   44  */
   45 #ifndef _AIC7XXX_93CX6_H_
   46 #define _AIC7XXX_93CX6_H_
   47 
   48 typedef enum {
   49         C46 = 6,
   50         C56_66 = 8
   51 } seeprom_chip_t;
   52 
   53 struct seeprom_descriptor {
   54         struct ahc_softc *sd_ahc;
   55         u_int sd_control_offset;
   56         u_int sd_status_offset;
   57         u_int sd_dataout_offset;
   58         seeprom_chip_t sd_chip;
   59         uint16_t sd_MS;
   60         uint16_t sd_RDY;
   61         uint16_t sd_CS;
   62         uint16_t sd_CK;
   63         uint16_t sd_DO;
   64         uint16_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         ahc_inb(sd->sd_ahc, sd->sd_control_offset)
   85 #define SEEPROM_OUTB(sd, value)                                 \
   86 do {                                                            \
   87         ahc_outb(sd->sd_ahc, sd->sd_control_offset, value);     \
   88         ahc_flush_device_writes(sd->sd_ahc);                    \
   89 } while(0)
   90 
   91 #define SEEPROM_STATUS_INB(sd) \
   92         ahc_inb(sd->sd_ahc, sd->sd_status_offset)
   93 #define SEEPROM_DATA_INB(sd) \
   94         ahc_inb(sd->sd_ahc, sd->sd_dataout_offset)
   95 
   96 int ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
   97                      u_int start_addr, u_int count);
   98 int ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
   99                       u_int start_addr, u_int count);
  100 int ahc_verify_cksum(struct seeprom_config *sc);
  101 
  102 #endif /* _AIC7XXX_93CX6_H_ */

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