/*
* Interface to the 93 C46 / 56 serial EEPROM that is used to store BIOS
* settings for the aic7xxx based adaptec SCSI controllers . It can
* also be used for 93 C26 and 93 C06 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 . Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the " NO WARRANTY " disclaimer below
* ( " Disclaimer " ) and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution .
* 3 . Neither the names of the above - listed copyright holders nor the names
* of any contributors may 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 General Public License ( " GPL " ) version 2 as published by the Free
* Software Foundation .
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES .
*
* $ Id : //depot/aic7xxx/aic7xxx/aic7xxx_93cx6.h#12 $
*
* $ 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 ahc_read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
u_int start_addr, u_int count);
int ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
u_int start_addr, u_int count);
int ahc_verify_cksum(struct seeprom_config *sc);
#endif /* _AIC7XXX_93CX6_H_ */
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