1 /* $NetBSD: smc93cx6var.h,v 1.6 2003/05/02 19:12:19 dyoung 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 #define SEEPROM_INB(sd) \ 81 (((sd)->sd_regsize == 4) \ 82 ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ 83 (sd)->sd_control_offset) \ 84 : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ 85 (sd)->sd_control_offset)) 86 87 #define SEEPROM_OUTB(sd, value) do { \ 88 if ((sd)->sd_regsize == 4) \ 89 bus_space_write_4((sd)->sd_tag, (sd)->sd_bsh, \ 90 (sd)->sd_control_offset, (value)); \ 91 else \ 92 bus_space_write_1((sd)->sd_tag, (sd)->sd_bsh, \ 93 (sd)->sd_control_offset, (u_int8_t) (value)); \ 94 } while (0) 95 96 #define SEEPROM_STATUS_INB(sd) \ 97 (((sd)->sd_regsize == 4) \ 98 ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ 99 (sd)->sd_status_offset) \ 100 : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ 101 (sd)->sd_status_offset)) 102 103 #define SEEPROM_DATA_INB(sd) \ 104 (((sd)->sd_regsize == 4) \ 105 ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ 106 (sd)->sd_dataout_offset) \ 107 : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ 108 (sd)->sd_dataout_offset)) 109 110 int read_seeprom(struct seeprom_descriptor *sd, u_int16_t *buf, 111 bus_size_t start_addr, bus_size_t count); 112