103 lines
3.6 KiB
C
103 lines
3.6 KiB
C
/*
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* Interface to the 93C46/56 serial EEPROM that is used to store BIOS
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* settings for the aic7xxx based adaptec SCSI controllers. It can
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* also be used for 93C26 and 93C06 serial EEPROMS.
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*
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* Copyright (c) 1994, 1995, 2000 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id: //depot/aic7xxx/aic7xxx/aic7xxx_93cx6.h#12 $
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*
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* $FreeBSD$
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*/
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#ifndef _AIC7XXX_93CX6_H_
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#define _AIC7XXX_93CX6_H_
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typedef enum {
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C46 = 6,
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C56_66 = 8
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} seeprom_chip_t;
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struct seeprom_descriptor {
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struct ahc_softc *sd_ahc;
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u_int sd_control_offset;
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u_int sd_status_offset;
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u_int sd_dataout_offset;
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seeprom_chip_t sd_chip;
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uint16_t sd_MS;
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uint16_t sd_RDY;
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uint16_t sd_CS;
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uint16_t sd_CK;
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uint16_t sd_DO;
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uint16_t sd_DI;
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};
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/*
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* This function will read count 16-bit words from the serial EEPROM and
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* return their value in buf. The port address of the aic7xxx serial EEPROM
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* control register is passed in as offset. The following parameters are
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* also passed in:
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*
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* CS - Chip select
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* CK - Clock
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* DO - Data out
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* DI - Data in
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* RDY - SEEPROM ready
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* MS - Memory port mode select
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*
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* A failed read attempt returns 0, and a successful read returns 1.
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*/
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#define SEEPROM_INB(sd) \
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ahc_inb(sd->sd_ahc, sd->sd_control_offset)
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#define SEEPROM_OUTB(sd, value) \
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do { \
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ahc_outb(sd->sd_ahc, sd->sd_control_offset, value); \
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ahc_flush_device_writes(sd->sd_ahc); \
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} while(0)
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#define SEEPROM_STATUS_INB(sd) \
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ahc_inb(sd->sd_ahc, sd->sd_status_offset)
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#define SEEPROM_DATA_INB(sd) \
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ahc_inb(sd->sd_ahc, sd->sd_dataout_offset)
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int ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
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u_int start_addr, u_int count);
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int ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
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u_int start_addr, u_int count);
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int ahc_verify_cksum(struct seeprom_config *sc);
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#endif /* _AIC7XXX_93CX6_H_ */
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