1 /*- 2 * Copyright (c) 2017 Ilya Bakulin. All rights reserved. 3 * Copyright (c) 2018-2019 The FreeBSD Foundation 4 * 5 * Portions of this software were developed by Björn Zeeb 6 * under sponsorship from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * 29 * Portions of this software may have been developed with reference to 30 * the SD Simplified Specification. The following disclaimer may apply: 31 * 32 * The following conditions apply to the release of the simplified 33 * specification ("Simplified Specification") by the SD Card Association and 34 * the SD Group. The Simplified Specification is a subset of the complete SD 35 * Specification which is owned by the SD Card Association and the SD 36 * Group. This Simplified Specification is provided on a non-confidential 37 * basis subject to the disclaimers below. Any implementation of the 38 * Simplified Specification may require a license from the SD Card 39 * Association, SD Group, SD-3C LLC or other third parties. 40 * 41 * Disclaimers: 42 * 43 * The information contained in the Simplified Specification is presented only 44 * as a standard specification for SD Cards and SD Host/Ancillary products and 45 * is provided "AS-IS" without any representations or warranties of any 46 * kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD 47 * Card Association for any damages, any infringements of patents or other 48 * right of the SD Group, SD-3C LLC, the SD Card Association or any third 49 * parties, which may result from its use. No license is granted by 50 * implication, estoppel or otherwise under any patent or other rights of the 51 * SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing 52 * herein shall be construed as an obligation by the SD Group, the SD-3C LLC 53 * or the SD Card Association to disclose or distribute any technical 54 * information, know-how or other confidential information to any third party. 55 */ 56 57 #include <sys/cdefs.h> 58 #include <sys/types.h> 59 #include <sys/param.h> 60 #include <sys/kernel.h> 61 #include <sys/systm.h> 62 #include <sys/bus.h> 63 #include <sys/endian.h> 64 65 #include <dev/mmc/mmcreg.h> 66 67 #include <dev/sdio/sdiob.h> 68 #include <dev/sdio/sdio_subr.h> 69 70 #include "sdio_if.h" 71 72 /* Works on F0. */ 73 static int 74 sdio_set_bool_for_func(device_t dev, uint32_t addr, uint8_t fn, bool enable) 75 { 76 device_t pdev; 77 int error; 78 uint8_t val; 79 bool enabled; 80 81 pdev = device_get_parent(dev); 82 error = SDIO_READ_DIRECT(pdev, 0, addr, &val); 83 if (error != 0) 84 return (error); 85 86 enabled = (val & (1 << fn)) ? true : false; 87 if (enabled == enable) 88 return (0); 89 90 if (enable) 91 val |= (1 << fn); 92 else 93 val &= ~(1 << fn); 94 error = SDIO_WRITE_DIRECT(pdev, 0, addr, val); 95 return (error); 96 } 97 98 int 99 sdio_enable_func(struct sdio_func *f) 100 { 101 102 return (sdio_set_bool_for_func(f->dev, SD_IO_CCCR_FN_ENABLE, 103 f->fn, true)); 104 } 105 106 int 107 sdio_disable_func(struct sdio_func *f) 108 { 109 110 return (sdio_set_bool_for_func(f->dev, SD_IO_CCCR_FN_ENABLE, 111 f->fn, false)); 112 } 113 114 int 115 sdio_set_block_size(struct sdio_func *f, uint16_t bs) 116 { 117 device_t pdev; 118 int error; 119 uint32_t addr; 120 uint16_t v; 121 122 if (bs > f->max_blksize) 123 return (EOPNOTSUPP); 124 125 if (!sdio_get_support_multiblk(f->dev)) 126 return (EOPNOTSUPP); 127 128 pdev = device_get_parent(f->dev); 129 addr = SD_IO_FBR_START * f->fn + SD_IO_FBR_IOBLKSZ; 130 v = htole16(bs); 131 /* Always write through F0. */ 132 error = SDIO_WRITE_DIRECT(pdev, 0, addr, v & 0xff); 133 if (error == 0) 134 error = SDIO_WRITE_DIRECT(pdev, 0, addr + 1, 135 (v >> 8) & 0xff); 136 if (error == 0) 137 f->cur_blksize = bs; 138 139 return (error); 140 } 141 142 uint8_t 143 sdio_read_1(struct sdio_func *f, uint32_t addr, int *err) 144 { 145 int error; 146 uint8_t v; 147 148 error = SDIO_READ_DIRECT(device_get_parent(f->dev), f->fn, addr, &v); 149 if (error) { 150 if (err != NULL) 151 *err = error; 152 return (0xff); 153 } else { 154 if (err != NULL) 155 *err = 0; 156 return (v); 157 } 158 } 159 160 void 161 sdio_write_1(struct sdio_func *f, uint32_t addr, uint8_t val, int *err) 162 { 163 int error; 164 165 error = SDIO_WRITE_DIRECT(device_get_parent(f->dev), f->fn, addr, val); 166 if (err != NULL) 167 *err = error; 168 } 169 170 uint32_t 171 sdio_read_4(struct sdio_func *f, uint32_t addr, int *err) 172 { 173 int error; 174 uint32_t v; 175 176 error = SDIO_READ_EXTENDED(device_get_parent(f->dev), f->fn, addr, 177 sizeof(v), (uint8_t *)&v, true); 178 if (error) { 179 if (err != NULL) 180 *err = error; 181 return (0xffffffff); 182 } else { 183 if (err != NULL) 184 *err = 0; 185 return (le32toh(v)); 186 } 187 } 188 189 void 190 sdio_write_4(struct sdio_func *f, uint32_t addr, uint32_t val, int *err) 191 { 192 int error; 193 194 error = SDIO_WRITE_EXTENDED(device_get_parent(f->dev), f->fn, addr, 195 sizeof(val), (uint8_t *)&val, true); 196 if (err != NULL) 197 *err = error; 198 } 199 200 uint8_t 201 sdio_f0_read_1(struct sdio_func *f, uint32_t addr, int *err) 202 { 203 int error; 204 uint8_t v; 205 206 error = SDIO_READ_DIRECT(device_get_parent(f->dev), 0, addr, &v); 207 if (error) { 208 if (err != NULL) 209 *err = error; 210 return (0xff); 211 } else { 212 if (err != NULL) 213 *err = 0; 214 return (v); 215 } 216 } 217 218 void 219 sdio_f0_write_1(struct sdio_func *f, uint32_t addr, uint8_t val, int *err) 220 { 221 int error; 222 223 error = SDIO_WRITE_DIRECT(device_get_parent(f->dev), 0, addr, val); 224 if (err != NULL) 225 *err = error; 226 } 227 228 /* end */ 229