Annotation of sys/dev/ic/smc93cx6var.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: smc93cx6var.h,v 1.16 2003/08/15 23:41:47 fgsch Exp $ */
2: /* $FreeBSD: sys/dev/aic7xxx/93cx6.h,v 1.3 1999/12/29 04:35:33 peter Exp $ */
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, immediately at the beginning of the file.
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: * Where this Software is combined with software released under the terms of
21: * the GNU Public License ("GPL") and the terms of the GPL would require the
22: * combined work to also be released under the terms of the GPL, the terms
23: * and conditions of this License will apply in addition to those of the
24: * GPL with the exception of any terms or conditions of this License that
25: * conflict with, or are expressly prohibited by, the GPL.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
31: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: */
39: #ifndef _SMC93CX6VAR_H_
40: #define _SMC93CX6VAR_H_
41:
42: #include <sys/param.h>
43:
44: #ifdef _KERNEL
45:
46: typedef enum {
47: C46 = 6,
48: C56_66 = 8
49: } seeprom_chip_t;
50:
51: struct seeprom_descriptor {
52: bus_space_tag_t sd_tag;
53: bus_space_handle_t sd_bsh;
54: bus_size_t sd_regsize;
55: bus_size_t sd_control_offset;
56: bus_size_t sd_status_offset;
57: bus_size_t sd_dataout_offset;
58: seeprom_chip_t sd_chip;
59: u_int16_t sd_MS;
60: u_int16_t sd_RDY;
61: u_int16_t sd_CS;
62: u_int16_t sd_CK;
63: u_int16_t sd_DO;
64: u_int16_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: (((sd)->sd_regsize == 4) \
85: ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
86: (sd)->sd_control_offset) \
87: : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
88: (sd)->sd_control_offset))
89:
90: #define SEEPROM_OUTB(sd, value) \
91: do { \
92: if ((sd)->sd_regsize == 4) \
93: bus_space_write_4((sd)->sd_tag, (sd)->sd_bsh, \
94: (sd)->sd_control_offset, (value)); \
95: else \
96: bus_space_write_1((sd)->sd_tag, (sd)->sd_bsh, \
97: (sd)->sd_control_offset, (u_int8_t) (value)); \
98: } while(0)
99:
100: #define SEEPROM_STATUS_INB(sd) \
101: (((sd)->sd_regsize == 4) \
102: ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
103: (sd)->sd_status_offset) \
104: : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
105: (sd)->sd_status_offset))
106:
107: #define SEEPROM_DATA_INB(sd) \
108: (((sd)->sd_regsize == 4) \
109: ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
110: (sd)->sd_dataout_offset) \
111: : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
112: (sd)->sd_dataout_offset))
113:
114: int read_seeprom(struct seeprom_descriptor *, u_int16_t *,
115: bus_size_t, bus_size_t);
116:
117: #endif /* _KERNEL */
118: #endif /* _SMC93CX6VAR_H_ */
CVSweb