11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Interface to the 93C46/56 serial EEPROM that is used to store BIOS 31da177e4SLinus Torvalds * settings for the aic7xxx based adaptec SCSI controllers. It can 41da177e4SLinus Torvalds * also be used for 93C26 and 93C06 serial EEPROMS. 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright (c) 1994, 1995, 2000 Justin T. Gibbs. 71da177e4SLinus Torvalds * All rights reserved. 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or without 101da177e4SLinus Torvalds * modification, are permitted provided that the following conditions 111da177e4SLinus Torvalds * are met: 121da177e4SLinus Torvalds * 1. Redistributions of source code must retain the above copyright 131da177e4SLinus Torvalds * notice, this list of conditions, and the following disclaimer, 141da177e4SLinus Torvalds * without modification. 151da177e4SLinus Torvalds * 2. Redistributions in binary form must reproduce at minimum a disclaimer 161da177e4SLinus Torvalds * substantially similar to the "NO WARRANTY" disclaimer below 171da177e4SLinus Torvalds * ("Disclaimer") and any redistribution must be conditioned upon 181da177e4SLinus Torvalds * including a substantially similar Disclaimer requirement for further 191da177e4SLinus Torvalds * binary redistribution. 201da177e4SLinus Torvalds * 3. Neither the names of the above-listed copyright holders nor the names 211da177e4SLinus Torvalds * of any contributors may be used to endorse or promote products derived 221da177e4SLinus Torvalds * from this software without specific prior written permission. 231da177e4SLinus Torvalds * 241da177e4SLinus Torvalds * Alternatively, this software may be distributed under the terms of the 251da177e4SLinus Torvalds * GNU General Public License ("GPL") version 2 as published by the Free 261da177e4SLinus Torvalds * Software Foundation. 271da177e4SLinus Torvalds * 281da177e4SLinus Torvalds * NO WARRANTY 291da177e4SLinus Torvalds * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 301da177e4SLinus Torvalds * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 311da177e4SLinus Torvalds * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 321da177e4SLinus Torvalds * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 331da177e4SLinus Torvalds * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 341da177e4SLinus Torvalds * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 351da177e4SLinus Torvalds * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 361da177e4SLinus Torvalds * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 371da177e4SLinus Torvalds * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 381da177e4SLinus Torvalds * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 391da177e4SLinus Torvalds * POSSIBILITY OF SUCH DAMAGES. 401da177e4SLinus Torvalds * 411da177e4SLinus Torvalds * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_93cx6.h#12 $ 421da177e4SLinus Torvalds * 431da177e4SLinus Torvalds * $FreeBSD$ 441da177e4SLinus Torvalds */ 451da177e4SLinus Torvalds #ifndef _AIC7XXX_93CX6_H_ 461da177e4SLinus Torvalds #define _AIC7XXX_93CX6_H_ 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds typedef enum { 491da177e4SLinus Torvalds C46 = 6, 501da177e4SLinus Torvalds C56_66 = 8 511da177e4SLinus Torvalds } seeprom_chip_t; 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds struct seeprom_descriptor { 541da177e4SLinus Torvalds struct ahc_softc *sd_ahc; 551da177e4SLinus Torvalds u_int sd_control_offset; 561da177e4SLinus Torvalds u_int sd_status_offset; 571da177e4SLinus Torvalds u_int sd_dataout_offset; 581da177e4SLinus Torvalds seeprom_chip_t sd_chip; 591da177e4SLinus Torvalds uint16_t sd_MS; 601da177e4SLinus Torvalds uint16_t sd_RDY; 611da177e4SLinus Torvalds uint16_t sd_CS; 621da177e4SLinus Torvalds uint16_t sd_CK; 631da177e4SLinus Torvalds uint16_t sd_DO; 641da177e4SLinus Torvalds uint16_t sd_DI; 651da177e4SLinus Torvalds }; 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds /* 681da177e4SLinus Torvalds * This function will read count 16-bit words from the serial EEPROM and 691da177e4SLinus Torvalds * return their value in buf. The port address of the aic7xxx serial EEPROM 701da177e4SLinus Torvalds * control register is passed in as offset. The following parameters are 711da177e4SLinus Torvalds * also passed in: 721da177e4SLinus Torvalds * 731da177e4SLinus Torvalds * CS - Chip select 741da177e4SLinus Torvalds * CK - Clock 751da177e4SLinus Torvalds * DO - Data out 761da177e4SLinus Torvalds * DI - Data in 771da177e4SLinus Torvalds * RDY - SEEPROM ready 781da177e4SLinus Torvalds * MS - Memory port mode select 791da177e4SLinus Torvalds * 801da177e4SLinus Torvalds * A failed read attempt returns 0, and a successful read returns 1. 811da177e4SLinus Torvalds */ 821da177e4SLinus Torvalds 831da177e4SLinus Torvalds #define SEEPROM_INB(sd) \ 841da177e4SLinus Torvalds ahc_inb(sd->sd_ahc, sd->sd_control_offset) 851da177e4SLinus Torvalds #define SEEPROM_OUTB(sd, value) \ 861da177e4SLinus Torvalds do { \ 871da177e4SLinus Torvalds ahc_outb(sd->sd_ahc, sd->sd_control_offset, value); \ 881da177e4SLinus Torvalds ahc_flush_device_writes(sd->sd_ahc); \ 891da177e4SLinus Torvalds } while(0) 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds #define SEEPROM_STATUS_INB(sd) \ 921da177e4SLinus Torvalds ahc_inb(sd->sd_ahc, sd->sd_status_offset) 931da177e4SLinus Torvalds #define SEEPROM_DATA_INB(sd) \ 941da177e4SLinus Torvalds ahc_inb(sd->sd_ahc, sd->sd_dataout_offset) 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds int ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf, 971da177e4SLinus Torvalds u_int start_addr, u_int count); 981da177e4SLinus Torvalds int ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf, 991da177e4SLinus Torvalds u_int start_addr, u_int count); 1001da177e4SLinus Torvalds int ahc_verify_cksum(struct seeprom_config *sc); 1011da177e4SLinus Torvalds 1021da177e4SLinus Torvalds #endif /* _AIC7XXX_93CX6_H_ */ 103