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.
6 * SPDX-License-Identifier: BSD-3-Clause
8 * Copyright (c) 1994, 1995, 2000 Justin T. Gibbs.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
43 * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_93cx6.h#12 $
47 #ifndef _AIC7XXX_93CX6_H_
48 #define _AIC7XXX_93CX6_H_
55 struct seeprom_descriptor {
56 struct ahc_softc *sd_ahc;
57 u_int sd_control_offset;
58 u_int sd_status_offset;
59 u_int sd_dataout_offset;
60 seeprom_chip_t sd_chip;
70 * This function will read count 16-bit words from the serial EEPROM and
71 * return their value in buf. The port address of the aic7xxx serial EEPROM
72 * control register is passed in as offset. The following parameters are
80 * MS - Memory port mode select
82 * A failed read attempt returns 0, and a successful read returns 1.
85 #define SEEPROM_INB(sd) \
86 ahc_inb(sd->sd_ahc, sd->sd_control_offset)
87 #define SEEPROM_OUTB(sd, value) \
89 ahc_outb(sd->sd_ahc, sd->sd_control_offset, value); \
90 ahc_flush_device_writes(sd->sd_ahc); \
93 #define SEEPROM_STATUS_INB(sd) \
94 ahc_inb(sd->sd_ahc, sd->sd_status_offset)
95 #define SEEPROM_DATA_INB(sd) \
96 ahc_inb(sd->sd_ahc, sd->sd_dataout_offset)
98 int ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
99 u_int start_addr, u_int count);
100 int ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
101 u_int start_addr, u_int count);
102 int ahc_verify_cksum(struct seeprom_config *sc);
104 #endif /* _AIC7XXX_93CX6_H_ */