1 /* $NetBSD: smc93cx6var.h,v 1.9 2005/12/11 12:21:28 christos 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, this list of conditions, and the following disclaimer, 16 * without modification. 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 * Alternatively, this software may be distributed under the terms of the 21 * the GNU Public License ("GPL"). 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 27 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx.c,v 1.40 2000/01/07 23:08:17 gibbs Exp $ 36 */ 37 38 #include <sys/param.h> 39 #if !defined(__NetBSD__) 40 #include <sys/systm.h> 41 #endif 42 43 typedef enum { 44 C46 = 6, 45 C56_66 = 8 46 } seeprom_chip_t; 47 48 struct seeprom_descriptor { 49 bus_space_tag_t sd_tag; 50 bus_space_handle_t sd_bsh; 51 bus_size_t sd_regsize; 52 bus_size_t sd_control_offset; 53 bus_size_t sd_status_offset; 54 bus_size_t sd_dataout_offset; 55 seeprom_chip_t sd_chip; 56 u_int32_t sd_MS; 57 u_int32_t sd_RDY; 58 u_int32_t sd_CS; 59 u_int32_t sd_CK; 60 u_int32_t sd_DO; 61 u_int32_t sd_DI; 62 }; 63 64 /* 65 * This function will read count 16-bit words from the serial EEPROM and 66 * return their value in buf. The port address of the aic7xxx serial EEPROM 67 * control register is passed in as offset. The following parameters are 68 * also passed in: 69 * 70 * CS - Chip select 71 * CK - Clock 72 * DO - Data out 73 * DI - Data in 74 * RDY - SEEPROM ready 75 * MS - Memory port mode select 76 * 77 * A failed read attempt returns 0, and a successful read returns 1. 78 */ 79 80 /* XXX bus barriers */ 81 #define SEEPROM_INB(sd) \ 82 (((sd)->sd_regsize == 4) \ 83 ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ 84 (sd)->sd_control_offset) \ 85 : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ 86 (sd)->sd_control_offset)) 87 88 #define SEEPROM_OUTB(sd, value) do { \ 89 if ((sd)->sd_regsize == 4) \ 90 bus_space_write_4((sd)->sd_tag, (sd)->sd_bsh, \ 91 (sd)->sd_control_offset, (value)); \ 92 else \ 93 bus_space_write_1((sd)->sd_tag, (sd)->sd_bsh, \ 94 (sd)->sd_control_offset, (u_int8_t) (value)); \ 95 } while (0) 96 97 #define SEEPROM_STATUS_INB(sd) \ 98 (((sd)->sd_regsize == 4) \ 99 ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ 100 (sd)->sd_status_offset) \ 101 : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ 102 (sd)->sd_status_offset)) 103 104 #define SEEPROM_DATA_INB(sd) \ 105 (((sd)->sd_regsize == 4) \ 106 ? bus_space_read_4((sd)->sd_tag, (sd)->sd_bsh, \ 107 (sd)->sd_dataout_offset) \ 108 : bus_space_read_1((sd)->sd_tag, (sd)->sd_bsh, \ 109 (sd)->sd_dataout_offset)) 110 111 int read_seeprom(struct seeprom_descriptor *, u_int16_t *, 112 bus_size_t, bus_size_t); 113