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1da177e4 LT |
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_ */ |