1 /* $NetBSD: smc93cx6var.h,v 1.5 2000/03/15 02:08:31 fvdl 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_control_offset; 52 bus_size_t sd_status_offset; 53 bus_size_t sd_dataout_offset; 54 seeprom_chip_t sd_chip; 55 u_int16_t sd_MS; 56 u_int16_t sd_RDY; 57 u_int16_t sd_CS; 58 u_int16_t sd_CK; 59 u_int16_t sd_DO; 60 u_int16_t sd_DI; 61 }; 62 63 /* 64 * This function will read count 16-bit words from the serial EEPROM and 65 * return their value in buf. The port address of the aic7xxx serial EEPROM 66 * control register is passed in as offset. The following parameters are 67 * also passed in: 68 * 69 * CS - Chip select 70 * CK - Clock 71 * DO - Data out 72 * DI - Data in 73 * RDY - SEEPROM ready 74 * MS - Memory port mode select 75 * 76 * A failed read attempt returns 0, and a successful read returns 1. 77 */ 78 79 #define SEEPROM_INB(sd) \ 80 bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_control_offset) 81 #define SEEPROM_OUTB(sd, value) \ 82 bus_space_write_1(sd->sd_tag, sd->sd_bsh, sd->sd_control_offset, value) 83 #define SEEPROM_STATUS_INB(sd) \ 84 bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_status_offset) 85 #define SEEPROM_DATA_INB(sd) \ 86 bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_dataout_offset) 87 88 int read_seeprom(struct seeprom_descriptor *sd, u_int16_t *buf, 89 bus_size_t start_addr, bus_size_t count); 90