Home | History | Annotate | Line # | Download | only in ic
smc93cx6var.h revision 1.2 
      1 /*	$NetBSD: smc93cx6var.h,v 1.2 1996/07/10 22:50:50 explorer 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 immediately at the beginning of the file, without modification,
     16  *    this list of conditions, and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. Absolutely no warranty of function or purpose is made by the author
     21  *    Justin T. Gibbs.
     22  * 4. Modifications may be freely made to this file if the above conditions
     23  *    are met.
     24  *
     25  * from	Id: 93cx6.h,v 1.3 1996/05/30 07:19:55 gibbs Exp
     26  */
     27 
     28 #include <sys/param.h>
     29 #if !defined(__NetBSD__)
     30 #include <sys/systm.h>
     31 #endif
     32 
     33 struct seeprom_descriptor {
     34 #if defined(__FreeBSD__)
     35 	u_long sd_iobase;
     36 #elif defined(__NetBSD__)
     37 	bus_chipset_tag_t sd_bc;
     38 	bus_io_handle_t sd_ioh;
     39 	bus_io_size_t sd_offset;
     40 #endif
     41 	u_int16_t sd_MS;
     42 	u_int16_t sd_RDY;
     43 	u_int16_t sd_CS;
     44 	u_int16_t sd_CK;
     45 	u_int16_t sd_DO;
     46 	u_int16_t sd_DI;
     47 };
     48 
     49 /*
     50  * This function will read count 16-bit words from the serial EEPROM and
     51  * return their value in buf.  The port address of the aic7xxx serial EEPROM
     52  * control register is passed in as offset.  The following parameters are
     53  * also passed in:
     54  *
     55  *   CS  - Chip select
     56  *   CK  - Clock
     57  *   DO  - Data out
     58  *   DI  - Data in
     59  *   RDY - SEEPROM ready
     60  *   MS  - Memory port mode select
     61  *
     62  *  A failed read attempt returns 0, and a successful read returns 1.
     63  */
     64 
     65 #if defined(__FreeBSD__)
     66 #define	SEEPROM_INB(sd)		inb(sd->sd_iobase)
     67 #define	SEEPROM_OUTB(sd, value)	outb(sd->sd_iobase, value)
     68 #elif defined(__NetBSD__)
     69 #define	SEEPROM_INB(sd) \
     70 	bus_io_read_1(sd->sd_bc, sd->sd_ioh, sd->sd_offset)
     71 #define	SEEPROM_OUTB(sd, value) \
     72 	bus_io_write_1(sd->sd_bc, sd->sd_ioh, sd->sd_offset, value)
     73 #endif
     74 
     75 #if defined(__FreeBSD__)
     76 int read_seeprom __P((struct seeprom_descriptor *sd,
     77     u_int16_t *buf, u_int start_addr, int count));
     78 #elif defined(__NetBSD__)
     79 int read_seeprom __P((struct seeprom_descriptor *sd,
     80     u_int16_t *buf, bus_io_size_t start_addr, bus_io_size_t count));
     81 #endif
     82