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 __FBSDID("$FreeBSD$"); 59 60 #include <sys/types.h> 61 #include <sys/param.h> 62 #include <sys/kernel.h> 63 #include <sys/systm.h> 64 #include <sys/bus.h> 65 #include <sys/endian.h> 66 67 #include <dev/mmc/mmcreg.h> 68 69 #include <dev/sdio/sdiob.h> 70 #include <dev/sdio/sdio_subr.h> 71 72 #include "sdio_if.h" 73 74 /* Works on F0. */ 75 static int 76 sdio_set_bool_for_func(device_t dev, uint32_t addr, uint8_t fn, bool enable) 77 { 78 device_t pdev; 79 int error; 80 uint8_t val; 81 bool enabled; 82 83 pdev = device_get_parent(dev); 84 error = SDIO_READ_DIRECT(pdev, 0, addr, &val); 85 if (error != 0) 86 return (error); 87 88 enabled = (val & (1 << fn)) ? true : false; 89 if (enabled == enable) 90 return (0); 91 92 if (enable) 93 val |= (1 << fn); 94 else 95 val &= ~(1 << fn); 96 error = SDIO_WRITE_DIRECT(pdev, 0, addr, val); 97 return (error); 98 } 99 100 int 101 sdio_enable_func(struct sdio_func *f) 102 { 103 104 return (sdio_set_bool_for_func(f->dev, SD_IO_CCCR_FN_ENABLE, 105 f->fn, true)); 106 } 107 108 int 109 sdio_disable_func(struct sdio_func *f) 110 { 111 112 return (sdio_set_bool_for_func(f->dev, SD_IO_CCCR_FN_ENABLE, 113 f->fn, false)); 114 } 115 116 int 117 sdio_set_block_size(struct sdio_func *f, uint16_t bs) 118 { 119 device_t pdev; 120 int error; 121 uint32_t addr; 122 uint16_t v; 123 124 if (!sdio_get_support_multiblk(f->dev)) 125 return (EOPNOTSUPP); 126 127 pdev = device_get_parent(f->dev); 128 addr = SD_IO_FBR_START * f->fn + SD_IO_FBR_IOBLKSZ; 129 v = htole16(bs); 130 /* Always write through F0. */ 131 error = SDIO_WRITE_DIRECT(pdev, 0, addr, v & 0xff); 132 if (error == 0) 133 error = SDIO_WRITE_DIRECT(pdev, 0, addr + 1, 134 (v >> 8) & 0xff); 135 if (error == 0) 136 f->cur_blksize = bs; 137 138 return (error); 139 } 140 141 uint8_t 142 sdio_readb(struct sdio_func *f, uint32_t addr, int *err) 143 { 144 int error; 145 uint8_t v; 146 147 error = SDIO_READ_DIRECT(device_get_parent(f->dev), f->fn, addr, &v); 148 if (error) { 149 if (err != NULL) 150 *err = error; 151 return (0xff); 152 } else { 153 if (err != NULL) 154 *err = 0; 155 return (v); 156 } 157 } 158 159 void 160 sdio_writeb(struct sdio_func *f, uint8_t val, uint32_t addr, int *err) 161 { 162 int error; 163 164 error = SDIO_WRITE_DIRECT(device_get_parent(f->dev), f->fn, addr, val); 165 if (err != NULL) 166 *err = error; 167 } 168 169 uint32_t 170 sdio_readl(struct sdio_func *f, uint32_t addr, int *err) 171 { 172 int error; 173 uint32_t v; 174 175 error = SDIO_READ_EXTENDED(device_get_parent(f->dev), f->fn, addr, 176 sizeof(v), (uint8_t *)&v, false); 177 if (error) { 178 if (err != NULL) 179 *err = error; 180 return (0xffffffff); 181 } else { 182 if (err != NULL) 183 *err = 0; 184 return (le32toh(v)); 185 } 186 } 187 188 void 189 sdio_writel(struct sdio_func *f, uint32_t val, uint32_t addr, int *err) 190 { 191 int error; 192 193 error = SDIO_WRITE_EXTENDED(device_get_parent(f->dev), f->fn, addr, 194 sizeof(val), (uint8_t *)&val, false); 195 if (err != NULL) 196 *err = error; 197 } 198 199 uint8_t 200 sdio_f0_readb(struct sdio_func *f, uint32_t addr, int *err) 201 { 202 int error; 203 uint8_t v; 204 205 error = SDIO_READ_DIRECT(device_get_parent(f->dev), 0, addr, &v); 206 if (error) { 207 if (err != NULL) 208 *err = error; 209 return (0xff); 210 } else { 211 if (err != NULL) 212 *err = 0; 213 return (v); 214 } 215 } 216 217 void 218 sdio_f0_writeb(struct sdio_func *f, uint8_t val, uint32_t addr, int *err) 219 { 220 int error; 221 222 error = SDIO_WRITE_DIRECT(device_get_parent(f->dev), 0, addr, val); 223 if (err != NULL) 224 *err = error; 225 } 226 227 /* end */ 228