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_ */ |
103 | |