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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
52 
54  struct ahc_softc *sd_ahc;
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 
100 int ahc_verify_cksum(struct seeprom_config *sc);
101 
102 #endif /* _AIC7XXX_93CX6_H_ */