1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Interface to the 93C46 serial EEPROM that is used to store BIOS 8 * settings for the aic7xxx based adaptec SCSI controllers. It can 9 * also be used for 93C26 and 93C06 serial EEPROMS. 10 * 11 * Copyright (c) 1994, 1995 Justin T. Gibbs. 12 * All rights reserved. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions, and the following disclaimer, 19 * without modification. 20 * 2. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * Alternatively, this software may be distributed under the terms of the 24 * the GNU Public License ("GPL"). 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 30 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx.c,v 1.40 2000/01/07 23:08:17gibbs Exp $ 39 */ 40 41 #ifndef _SMC93CX6VAR_H_ 42 #define _SMC93CX6VAR_H_ 43 44 #ifdef __cplusplus 45 extern "C" { 46 #endif 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 51 typedef enum { 52 C46 = 6, 53 C56_66 = 8 54 } seeprom_chip_t; 55 56 struct seeprom_descriptor { 57 ddi_acc_handle_t sd_handle; 58 caddr_t sd_base; 59 size_t sd_regsize; 60 size_t sd_control_offset; 61 size_t sd_status_offset; 62 size_t sd_dataout_offset; 63 seeprom_chip_t sd_chip; 64 uint32_t sd_MS; 65 uint32_t sd_RDY; 66 uint32_t sd_CS; 67 uint32_t sd_CK; 68 uint32_t sd_DO; 69 uint32_t sd_DI; 70 }; 71 72 /* 73 * This function will read count 16-bit words from the serial EEPROM and 74 * return their value in buf. The port address of the aic7xxx serial EEPROM 75 * control register is passed in as offset. The following parameters are 76 * also passed in: 77 * 78 * CS - Chip select 79 * CK - Clock 80 * DO - Data out 81 * DI - Data in 82 * RDY - SEEPROM ready 83 * MS - Memory port mode select 84 * 85 * A failed read attempt returns 0, and a successful read returns 1. 86 */ 87 88 #define SEEPROM_INB(sd) \ 89 (((sd)->sd_regsize == 4) \ 90 ? ddi_get32((sd)->sd_handle, \ 91 (uint32_t *)((uintptr_t)(sd)->sd_base+ \ 92 (sd)->sd_control_offset)) \ 93 : ddi_get8((sd)->sd_handle, (uint8_t *)((sd)->sd_base+ \ 94 (sd)->sd_control_offset))) 95 96 #define SEEPROM_OUTB(sd, value) { \ 97 if ((sd)->sd_regsize == 4) \ 98 ddi_put32((sd)->sd_handle, \ 99 (uint32_t *)((uintptr_t)(sd)->sd_base+ \ 100 (sd)->sd_control_offset), (value)); \ 101 else \ 102 ddi_put8((sd)->sd_handle, \ 103 (uint8_t *)((sd)->sd_base+ \ 104 (sd)->sd_control_offset), (uint8_t)(value)); \ 105 } 106 107 #define SEEPROM_STATUS_INB(sd) \ 108 (((sd)->sd_regsize == 4) \ 109 ? ddi_get32((sd)->sd_handle, \ 110 (uint32_t *)((uintptr_t)(sd)->sd_base+ \ 111 (sd)->sd_status_offset)) \ 112 : ddi_get8((sd)->sd_handle, (uint8_t *)((sd)->sd_base+ \ 113 (sd)->sd_status_offset))) 114 115 #define SEEPROM_DATA_INB(sd) \ 116 (((sd)->sd_regsize == 4) \ 117 ? ddi_get32((sd)->sd_handle, \ 118 (uint32_t *)((uintptr_t)(sd)->sd_base+ \ 119 (sd)->sd_dataout_offset)) \ 120 : ddi_get8((sd)->sd_handle, (uint8_t *)((sd)->sd_base+ \ 121 (sd)->sd_dataout_offset))) 122 123 int read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf, 124 size_t start_addr, size_t count); 125 #ifdef __cplusplus 126 } 127 #endif 128 129 #endif /* _SMC93CX6VAR_H_ */ 130