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Annotation of sys/dev/ic/smc93cx6var.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: smc93cx6var.h,v 1.16 2003/08/15 23:41:47 fgsch Exp $  */
                      2: /* $FreeBSD: sys/dev/aic7xxx/93cx6.h,v 1.3 1999/12/29 04:35:33 peter Exp $ */
                      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, this list of conditions, and the following disclaimer,
                     16:  *    without modification, immediately at the beginning of the file.
                     17:  * 2. The name of the author may not be used to endorse or promote products
                     18:  *    derived from this software without specific prior written permission.
                     19:  *
                     20:  * Where this Software is combined with software released under the terms of
                     21:  * the GNU Public License ("GPL") and the terms of the GPL would require the
                     22:  * combined work to also be released under the terms of the GPL, the terms
                     23:  * and conditions of this License will apply in addition to those of the
                     24:  * GPL with the exception of any terms or conditions of this License that
                     25:  * conflict with, or are expressly prohibited by, the GPL.
                     26:  *
                     27:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     28:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     29:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     30:  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
                     31:  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     32:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     33:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     34:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     35:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     36:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     37:  * SUCH DAMAGE.
                     38:  */
                     39: #ifndef _SMC93CX6VAR_H_
                     40: #define _SMC93CX6VAR_H_
                     41:
                     42: #include <sys/param.h>
                     43:
                     44: #ifdef _KERNEL
                     45:
                     46: typedef enum {
                     47:        C46 = 6,
                     48:        C56_66 = 8
                     49: } seeprom_chip_t;
                     50:
                     51: struct seeprom_descriptor {
                     52:        bus_space_tag_t sd_tag;
                     53:        bus_space_handle_t sd_bsh;
                     54:        bus_size_t sd_regsize;
                     55:        bus_size_t sd_control_offset;
                     56:        bus_size_t sd_status_offset;
                     57:        bus_size_t sd_dataout_offset;
                     58:        seeprom_chip_t sd_chip;
                     59:        u_int16_t sd_MS;
                     60:        u_int16_t sd_RDY;
                     61:        u_int16_t sd_CS;
                     62:        u_int16_t sd_CK;
                     63:        u_int16_t sd_DO;
                     64:        u_int16_t sd_DI;
                     65: };
                     66:
                     67: /*
                     68:  * This function will read count 16-bit words from the serial EEPROM and
                     69:  * return their value in buf.  The port address of the aic7xxx serial EEPROM
                     70:  * control register is passed in as offset.  The following parameters are
                     71:  * also passed in:
                     72:  *
                     73:  *   CS  - Chip select
                     74:  *   CK  - Clock
                     75:  *   DO  - Data out
                     76:  *   DI  - Data in
                     77:  *   RDY - SEEPROM ready
                     78:  *   MS  - Memory port mode select
                     79:  *
                     80:  *  A failed read attempt returns 0, and a successful read returns 1.
                     81:  */
                     82:
                     83: #define        SEEPROM_INB(sd) \
                     84:        (((sd)->sd_regsize == 4) \
                     85:            ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
                     86:                  (sd)->sd_control_offset) \
                     87:            : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
                     88:                  (sd)->sd_control_offset))
                     89:
                     90: #define        SEEPROM_OUTB(sd, value) \
                     91: do { \
                     92:        if ((sd)->sd_regsize == 4) \
                     93:                bus_space_write_4((sd)->sd_tag, (sd)->sd_bsh, \
                     94:                    (sd)->sd_control_offset, (value)); \
                     95:        else \
                     96:                bus_space_write_1((sd)->sd_tag, (sd)->sd_bsh, \
                     97:                    (sd)->sd_control_offset, (u_int8_t) (value)); \
                     98: } while(0)
                     99:
                    100: #define        SEEPROM_STATUS_INB(sd) \
                    101:        (((sd)->sd_regsize == 4) \
                    102:            ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
                    103:                  (sd)->sd_status_offset) \
                    104:            : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
                    105:                  (sd)->sd_status_offset))
                    106:
                    107: #define        SEEPROM_DATA_INB(sd) \
                    108:        (((sd)->sd_regsize == 4) \
                    109:            ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \
                    110:                  (sd)->sd_dataout_offset) \
                    111:            : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \
                    112:                  (sd)->sd_dataout_offset))
                    113:
                    114: int    read_seeprom(struct seeprom_descriptor *, u_int16_t *,
                    115:             bus_size_t, bus_size_t);
                    116:
                    117: #endif /* _KERNEL */
                    118: #endif /* _SMC93CX6VAR_H_ */