| 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 | |