sdmmc_cis.c revision 1.1
1 /* $NetBSD: sdmmc_cis.c,v 1.1 2009/04/21 03:00:30 nonaka Exp $ */ 2 /* $OpenBSD: sdmmc_cis.c,v 1.1 2006/06/01 21:53:41 uwe Exp $ */ 3 4 /* 5 * Copyright (c) 2006 Uwe Stuehler <uwe (at) openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* Routines to decode the Card Information Structure of SD I/O cards */ 21 22 #include <sys/cdefs.h> 23 __KERNEL_RCSID(0, "$NetBSD: sdmmc_cis.c,v 1.1 2009/04/21 03:00:30 nonaka Exp $"); 24 25 #include <sys/param.h> 26 #include <sys/systm.h> 27 28 #include <dev/sdmmc/sdmmc_ioreg.h> 29 #include <dev/sdmmc/sdmmcdevs.h> 30 #include <dev/sdmmc/sdmmcvar.h> 31 32 #ifdef SDMMC_DEBUG 33 #define DPRINTF(s) printf s 34 #else 35 #define DPRINTF(s) /**/ 36 #endif 37 38 static uint32_t sdmmc_cisptr(struct sdmmc_function *); 39 static uint32_t 40 sdmmc_cisptr(struct sdmmc_function *sf) 41 { 42 uint32_t cisptr = 0; 43 44 /* XXX where is the per-function CIS pointer register? */ 45 if (sf->number != 0) 46 return SD_IO_CIS_START; 47 48 /* XXX is the CIS pointer stored in little-endian format? */ 49 cisptr |= sdmmc_io_read_1(sf, SD_IO_CCCR_CISPTR + 0) << 0; 50 cisptr |= sdmmc_io_read_1(sf, SD_IO_CCCR_CISPTR + 1) << 8; 51 cisptr |= sdmmc_io_read_1(sf, SD_IO_CCCR_CISPTR + 2) << 16; 52 return cisptr; 53 } 54 55 int 56 sdmmc_read_cis(struct sdmmc_function *sf, struct sdmmc_cis *cis) 57 { 58 device_t dev = sf->sc->sc_dev; 59 uint32_t reg; 60 uint8_t tplcode; 61 uint8_t tpllen; 62 int start, ch, count; 63 int i; 64 65 memset(cis, 0, sizeof *cis); 66 67 /* XXX read per-function CIS */ 68 if (sf->number != 0) 69 return 1; 70 71 reg = sdmmc_cisptr(sf); 72 if (reg < SD_IO_CIS_START || 73 reg >= (SD_IO_CIS_START + SD_IO_CIS_SIZE - 16)) { 74 aprint_error_dev(dev, "bad CIS ptr %#x\n", reg); 75 return 1; 76 } 77 78 for (;;) { 79 tplcode = sdmmc_io_read_1(sf, reg++); 80 tpllen = sdmmc_io_read_1(sf, reg++); 81 82 if (tplcode == 0xff || tpllen == 0) { 83 if (tplcode != 0xff) 84 aprint_error_dev(dev, "CIS parse error at %d, " 85 "tuple code %#x, length %d\n", 86 reg, tplcode, tpllen); 87 break; 88 } 89 90 switch (tplcode) { 91 case SD_IO_CISTPL_FUNCID: 92 if (tpllen < 2) { 93 aprint_error_dev(dev, 94 "bad CISTPL_FUNCID length\n"); 95 reg += tpllen; 96 break; 97 } 98 cis->function = sdmmc_io_read_1(sf, reg); 99 reg += tpllen; 100 break; 101 102 case SD_IO_CISTPL_MANFID: 103 if (tpllen < 4) { 104 aprint_error_dev(dev, 105 "bad CISTPL_MANFID length\n"); 106 reg += tpllen; 107 break; 108 } 109 cis->manufacturer = sdmmc_io_read_1(sf, reg++); 110 cis->manufacturer |= sdmmc_io_read_1(sf, reg++) << 8; 111 cis->product = sdmmc_io_read_1(sf, reg++); 112 cis->product |= sdmmc_io_read_1(sf, reg++) << 8; 113 break; 114 115 case SD_IO_CISTPL_VERS_1: 116 if (tpllen < 2) { 117 aprint_error_dev(dev, 118 "CISTPL_VERS_1 too short\n"); 119 reg += tpllen; 120 break; 121 } 122 123 cis->cis1_major = sdmmc_io_read_1(sf, reg++); 124 cis->cis1_minor = sdmmc_io_read_1(sf, reg++); 125 126 for (count = 0, start = 0, i = 0; 127 (count < 4) && ((i + 4) < 256); i++) { 128 ch = sdmmc_io_read_1(sf, reg + i); 129 if (ch == 0xff) 130 break; 131 cis->cis1_info_buf[i] = ch; 132 if (ch == 0) { 133 cis->cis1_info[count] = 134 cis->cis1_info_buf + start; 135 start = i + 1; 136 count++; 137 } 138 } 139 140 reg += tpllen - 2; 141 break; 142 143 default: 144 aprint_error_dev(dev, 145 "unknown tuple code %#x, length %d\n", 146 tplcode, tpllen); 147 reg += tpllen; 148 break; 149 } 150 } 151 152 return 0; 153 } 154 155 void 156 sdmmc_print_cis(struct sdmmc_function *sf) 157 { 158 device_t dev = sf->sc->sc_dev; 159 struct sdmmc_cis *cis = &sf->cis; 160 int i; 161 162 printf("%s: CIS version %u.%u\n", device_xname(dev), cis->cis1_major, 163 cis->cis1_minor); 164 165 printf("%s: CIS info: ", device_xname(dev)); 166 for (i = 0; i < 4; i++) { 167 if (cis->cis1_info[i] == NULL) 168 break; 169 if (i != 0) 170 aprint_verbose(", "); 171 printf("%s", cis->cis1_info[i]); 172 } 173 printf("\n"); 174 175 printf("%s: Manufacturer code 0x%x, product 0x%x\n", device_xname(dev), 176 cis->manufacturer, cis->product); 177 178 printf("%s: function %d: ", device_xname(dev), sf->number); 179 switch (sf->cis.function) { 180 case SDMMC_FUNCTION_WLAN: 181 printf("wireless network adapter"); 182 break; 183 184 default: 185 printf("unknown function (%d)", sf->cis.function); 186 break; 187 } 188 printf("\n"); 189 } 190 191 void 192 sdmmc_check_cis_quirks(struct sdmmc_function *sf) 193 { 194 char *p; 195 int i; 196 197 if (sf->cis.manufacturer == SDMMC_VENDOR_SPECTEC && 198 sf->cis.product == SDMMC_PRODUCT_SPECTEC_SDW820) { 199 /* This card lacks the VERS_1 tuple. */ 200 static const char cis1_info[] = 201 "Spectec\0SDIO WLAN Card\0SDW-820\0\0"; 202 203 sf->cis.cis1_major = 0x01; 204 sf->cis.cis1_minor = 0x00; 205 206 p = sf->cis.cis1_info_buf; 207 strlcpy(p, cis1_info, sizeof(sf->cis.cis1_info_buf)); 208 for (i = 0; i < 4; i++) { 209 sf->cis.cis1_info[i] = p; 210 p += strlen(p) + 1; 211 } 212 } 213 } 214
Indexes created Wed Sep 24 05:09:52 GMT 2025