664a31e496
is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
96 lines
3.4 KiB
C
96 lines
3.4 KiB
C
/*
|
|
* Interface to the 93C46 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 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, immediately at the beginning of the file.
|
|
* 2. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* Where this Software is combined with software released under the terms of
|
|
* the GNU Public License ("GPL") and the terms of the GPL would require the
|
|
* combined work to also be released under the terms of the GPL, the terms
|
|
* and conditions of this License will apply in addition to those of the
|
|
* GPL with the exception of any terms or conditions of this License that
|
|
* conflict with, or are expressly prohibited by, the 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#if !defined(__NetBSD__)
|
|
#include <sys/systm.h>
|
|
#endif
|
|
|
|
#ifdef _KERNEL
|
|
|
|
typedef enum {
|
|
C46 = 6,
|
|
C56_66 = 8
|
|
} seeprom_chip_t;
|
|
|
|
struct seeprom_descriptor {
|
|
bus_space_tag_t sd_tag;
|
|
bus_space_handle_t sd_bsh;
|
|
bus_size_t sd_control_offset;
|
|
bus_size_t sd_status_offset;
|
|
bus_size_t sd_dataout_offset;
|
|
seeprom_chip_t sd_chip;
|
|
u_int16_t sd_MS;
|
|
u_int16_t sd_RDY;
|
|
u_int16_t sd_CS;
|
|
u_int16_t sd_CK;
|
|
u_int16_t sd_DO;
|
|
u_int16_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) \
|
|
bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_control_offset)
|
|
#define SEEPROM_OUTB(sd, value) \
|
|
bus_space_write_1(sd->sd_tag, sd->sd_bsh, sd->sd_control_offset, value)
|
|
#define SEEPROM_STATUS_INB(sd) \
|
|
bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_status_offset)
|
|
#define SEEPROM_DATA_INB(sd) \
|
|
bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_dataout_offset)
|
|
|
|
int read_seeprom(struct seeprom_descriptor *sd, u_int16_t *buf,
|
|
bus_size_t start_addr, bus_size_t count);
|
|
|
|
#endif /* _KERNEL */
|