scsi/aic7xxx/aic7xxx_93cx6.h

0001 /*
0002  * Interface to the 93C46/56 serial EEPROM that is used to store BIOS
0003  * settings for the aic7xxx based adaptec SCSI controllers.  It can
0004  * also be used for 93C26 and 93C06 serial EEPROMS.
0005  *
0006  * Copyright (c) 1994, 1995, 2000 Justin T. Gibbs.
0007  * All rights reserved.
0008  *
0009  * Redistribution and use in source and binary forms, with or without
0010  * modification, are permitted provided that the following conditions
0011  * are met:
0012  * 1. Redistributions of source code must retain the above copyright
0013  *    notice, this list of conditions, and the following disclaimer,
0014  *    without modification.
0015  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
0016  *    substantially similar to the "NO WARRANTY" disclaimer below
0017  *    ("Disclaimer") and any redistribution must be conditioned upon
0018  *    including a substantially similar Disclaimer requirement for further
0019  *    binary redistribution.
0020  * 3. Neither the names of the above-listed copyright holders nor the names
0021  *    of any contributors may be used to endorse or promote products derived
0022  *    from this software without specific prior written permission.
0023  *
0024  * Alternatively, this software may be distributed under the terms of the
0025  * GNU General Public License ("GPL") version 2 as published by the Free
0026  * Software Foundation.
0027  *
0028  * NO WARRANTY
0029  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
0030  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
0031  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
0032  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
0033  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
0034  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
0035  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
0036  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
0037  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
0038  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0039  * POSSIBILITY OF SUCH DAMAGES.
0040  *
0041  * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_93cx6.h#12 $
0042  *
0043  * $FreeBSD$
0044  */
0045 #ifndef _AIC7XXX_93CX6_H_
0046 #define _AIC7XXX_93CX6_H_
0047
0048 typedef enum {
0049     C46 = 6,
0050     C56_66 = 8
0051 } seeprom_chip_t;
0052
0053 struct seeprom_descriptor {
0054     struct ahc_softc *sd_ahc;
0055     u_int sd_control_offset;
0056     u_int sd_status_offset;
0057     u_int sd_dataout_offset;
0058     seeprom_chip_t sd_chip;
0059     uint16_t sd_MS;
0060     uint16_t sd_RDY;
0061     uint16_t sd_CS;
0062     uint16_t sd_CK;
0063     uint16_t sd_DO;
0064     uint16_t sd_DI;
0065 };
0066
0067 /*
0068  * This function will read count 16-bit words from the serial EEPROM and
0069  * return their value in buf.  The port address of the aic7xxx serial EEPROM
0070  * control register is passed in as offset.  The following parameters are
0071  * also passed in:
0072  *
0073  *   CS  - Chip select
0074  *   CK  - Clock
0075  *   DO  - Data out
0076  *   DI  - Data in
0077  *   RDY - SEEPROM ready
0078  *   MS  - Memory port mode select
0079  *
0080  *  A failed read attempt returns 0, and a successful read returns 1.
0081  */
0082
0083 #define SEEPROM_INB(sd) \
0084     ahc_inb(sd->sd_ahc, sd->sd_control_offset)
0085 #define SEEPROM_OUTB(sd, value)                 \
0086 do {                                \
0087     ahc_outb(sd->sd_ahc, sd->sd_control_offset, value); \
0088     ahc_flush_device_writes(sd->sd_ahc);            \
0089 } while(0)
0090
0091 #define SEEPROM_STATUS_INB(sd) \
0092     ahc_inb(sd->sd_ahc, sd->sd_status_offset)
0093 #define SEEPROM_DATA_INB(sd) \
0094     ahc_inb(sd->sd_ahc, sd->sd_dataout_offset)
0095
0096 int ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
0097              u_int start_addr, u_int count);
0098 int ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
0099               u_int start_addr, u_int count);
0100 int ahc_verify_cksum(struct seeprom_config *sc);
0101
0102 #endif /* _AIC7XXX_93CX6_H_ */