1 | /* $NetBSD: smc93cx6var.h,v 1.9 2005/12/11 12:21:28 christos Exp $ */ |
2 | |
3 | /* |
4 | * Interface to the 93C46 serial EEPROM that is used to store BIOS |
5 | * settings for the aic7xxx based adaptec SCSI controllers. It can |
6 | * also be used for 93C26 and 93C06 serial EEPROMS. |
7 | * |
8 | * Copyright (c) 1994, 1995 Justin T. Gibbs. |
9 | * All rights reserved. |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
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. The name of the author may not be used to endorse or promote products |
18 | * derived from this software without specific prior written permission. |
19 | * |
20 | * Alternatively, this software may be distributed under the terms of the |
21 | * the GNU Public License ("GPL"). |
22 | * |
23 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR |
27 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
33 | * SUCH DAMAGE. |
34 | * |
35 | * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx.c,v 1.40 2000/01/07 23:08:17 gibbs Exp $ |
36 | */ |
37 | |
38 | #include <sys/param.h> |
39 | #if !defined(__NetBSD__) |
40 | #include <sys/systm.h> |
41 | #endif |
42 | |
43 | typedef enum { |
44 | C46 = 6, |
45 | C56_66 = 8 |
46 | } seeprom_chip_t; |
47 | |
48 | struct seeprom_descriptor { |
49 | bus_space_tag_t sd_tag; |
50 | bus_space_handle_t sd_bsh; |
51 | bus_size_t sd_regsize; |
52 | bus_size_t sd_control_offset; |
53 | bus_size_t sd_status_offset; |
54 | bus_size_t sd_dataout_offset; |
55 | seeprom_chip_t sd_chip; |
56 | u_int32_t sd_MS; |
57 | u_int32_t sd_RDY; |
58 | u_int32_t sd_CS; |
59 | u_int32_t sd_CK; |
60 | u_int32_t sd_DO; |
61 | u_int32_t sd_DI; |
62 | }; |
63 | |
64 | /* |
65 | * This function will read count 16-bit words from the serial EEPROM and |
66 | * return their value in buf. The port address of the aic7xxx serial EEPROM |
67 | * control register is passed in as offset. The following parameters are |
68 | * also passed in: |
69 | * |
70 | * CS - Chip select |
71 | * CK - Clock |
72 | * DO - Data out |
73 | * DI - Data in |
74 | * RDY - SEEPROM ready |
75 | * MS - Memory port mode select |
76 | * |
77 | * A failed read attempt returns 0, and a successful read returns 1. |
78 | */ |
79 | |
80 | /* XXX bus barriers */ |
81 | #define SEEPROM_INB(sd) \ |
82 | (((sd)->sd_regsize == 4) \ |
83 | ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ |
84 | (sd)->sd_control_offset) \ |
85 | : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ |
86 | (sd)->sd_control_offset)) |
87 | |
88 | #define SEEPROM_OUTB(sd, value) do { \ |
89 | if ((sd)->sd_regsize == 4) \ |
90 | bus_space_write_4((sd)->sd_tag, (sd)->sd_bsh, \ |
91 | (sd)->sd_control_offset, (value)); \ |
92 | else \ |
93 | bus_space_write_1((sd)->sd_tag, (sd)->sd_bsh, \ |
94 | (sd)->sd_control_offset, (u_int8_t) (value)); \ |
95 | } while (0) |
96 | |
97 | #define SEEPROM_STATUS_INB(sd) \ |
98 | (((sd)->sd_regsize == 4) \ |
99 | ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ |
100 | (sd)->sd_status_offset) \ |
101 | : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ |
102 | (sd)->sd_status_offset)) |
103 | |
104 | #define SEEPROM_DATA_INB(sd) \ |
105 | (((sd)->sd_regsize == 4) \ |
106 | ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ |
107 | (sd)->sd_dataout_offset) \ |
108 | : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ |
109 | (sd)->sd_dataout_offset)) |
110 | |
111 | int read_seeprom(struct seeprom_descriptor *, u_int16_t *, |
112 | bus_size_t, bus_size_t); |
113 | |