1 /* 2 * Copyright 2008 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 #pragma ident "%Z%%M% %I% %E% SMI" 42 43 #ifndef _SMC93CX6VAR_H_ 44 #define _SMC93CX6VAR_H_ 45 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 50 typedef enum { 51 C46 = 6, 52 C56_66 = 8 53 } seeprom_chip_t; 54 55 struct seeprom_descriptor { 56 ddi_acc_handle_t sd_handle; 57 caddr_t sd_base; 58 size_t sd_regsize; 59 size_t sd_control_offset; 60 size_t sd_status_offset; 61 size_t sd_dataout_offset; 62 seeprom_chip_t sd_chip; 63 uint32_t sd_MS; 64 uint32_t sd_RDY; 65 uint32_t sd_CS; 66 uint32_t sd_CK; 67 uint32_t sd_DO; 68 uint32_t sd_DI; 69 }; 70 71 /* 72 * This function will read count 16-bit words from the serial EEPROM and 73 * return their value in buf. The port address of the aic7xxx serial EEPROM 74 * control register is passed in as offset. The following parameters are 75 * also passed in: 76 * 77 * CS - Chip select 78 * CK - Clock 79 * DO - Data out 80 * DI - Data in 81 * RDY - SEEPROM ready 82 * MS - Memory port mode select 83 * 84 * A failed read attempt returns 0, and a successful read returns 1. 85 */ 86 87 #define SEEPROM_INB(sd) \ 88 (((sd)->sd_regsize == 4) \ 89 ? ddi_get32((sd)->sd_handle, \ 90 (uint32_t *)((uintptr_t)(sd)->sd_base+ \ 91 (sd)->sd_control_offset)) \ 92 : ddi_get8((sd)->sd_handle, (uint8_t *)((sd)->sd_base+ \ 93 (sd)->sd_control_offset))) 94 95 #define SEEPROM_OUTB(sd, value) { \ 96 if ((sd)->sd_regsize == 4) \ 97 ddi_put32((sd)->sd_handle, \ 98 (uint32_t *)((uintptr_t)(sd)->sd_base+ \ 99 (sd)->sd_control_offset), (value)); \ 100 else \ 101 ddi_put8((sd)->sd_handle, \ 102 (uint8_t *)((sd)->sd_base+ \ 103 (sd)->sd_control_offset), (uint8_t)(value)); \ 104 } 105 106 #define SEEPROM_STATUS_INB(sd) \ 107 (((sd)->sd_regsize == 4) \ 108 ? ddi_get32((sd)->sd_handle, \ 109 (uint32_t *)((uintptr_t)(sd)->sd_base+ \ 110 (sd)->sd_status_offset)) \ 111 : ddi_get8((sd)->sd_handle, (uint8_t *)((sd)->sd_base+ \ 112 (sd)->sd_status_offset))) 113 114 #define SEEPROM_DATA_INB(sd) \ 115 (((sd)->sd_regsize == 4) \ 116 ? ddi_get32((sd)->sd_handle, \ 117 (uint32_t *)((uintptr_t)(sd)->sd_base+ \ 118 (sd)->sd_dataout_offset)) \ 119 : ddi_get8((sd)->sd_handle, (uint8_t *)((sd)->sd_base+ \ 120 (sd)->sd_dataout_offset))) 121 122 int read_seeprom(struct seeprom_descriptor *sd, uint16_t *buf, 123 size_t start_addr, size_t count); 124 #endif /* _SMC93CX6VAR_H_ */ 125