/* * Interface to the 93C46/56 serial EEPROM that is used to store BIOS * settings for the aic7xxx based adaptec SCSI controllers. It can * also be used for 93C26 and 93C06 serial EEPROMS. * * Copyright (c) 1994, 1995, 2000 Justin T. Gibbs. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU Public License ("GPL"). * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: //depot/src/aic7xxx/aic7xxx_93cx6.h#4 $ * * $FreeBSD$ */ #ifndef _AIC7XXX_93CX6_H_ #define _AIC7XXX_93CX6_H_ typedef enum { C46 = 6, C56_66 = 8 } seeprom_chip_t; struct seeprom_descriptor { struct ahc_softc *sd_ahc; u_int sd_control_offset; u_int sd_status_offset; u_int sd_dataout_offset; seeprom_chip_t sd_chip; uint16_t sd_MS; uint16_t sd_RDY; uint16_t sd_CS; uint16_t sd_CK; uint16_t sd_DO; uint16_t sd_DI; }; /* * This function will read count 16-bit words from the serial EEPROM and * return their value in buf. The port address of the aic7xxx serial EEPROM * control register is passed in as offset. The following parameters are * also passed in: * * CS - Chip select * CK - Clock * DO - Data out * DI - Data in * RDY - SEEPROM ready * MS - Memory port mode select * * A failed read attempt returns 0, and a successful read returns 1. */ #define SEEPROM_INB(sd) \ ahc_inb(sd->sd_ahc, sd->sd_control_offset) #define SEEPROM_OUTB(sd, value) \ do { \ ahc_outb(sd->sd_ahc, sd->sd_control_offset, value); \ ahc_flush_device_writes(sd->sd_ahc); \ } while(0) #define SEEPROM_STATUS_INB(sd) \ ahc_inb(sd->sd_ahc, sd->sd_status_offset) #define SEEPROM_DATA_INB(sd) \ ahc_inb(sd->sd_ahc, sd->sd_dataout_offset) int read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf, u_int start_addr, u_int count); int verify_cksum(struct seeprom_config *sc); #endif /* _AIC7XXX_93CX6_H_ */