/* $NetBSD: sdmmc_cis.c,v 1.5.10.1 2020/02/25 18:40:43 martin Exp $ */ /* $OpenBSD: sdmmc_cis.c,v 1.1 2006/06/01 21:53:41 uwe Exp $ */ /* * Copyright (c) 2006 Uwe Stuehler * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* Routines to decode the Card Information Structure of SD I/O cards */ #include __KERNEL_RCSID(0, "$NetBSD: sdmmc_cis.c,v 1.5.10.1 2020/02/25 18:40:43 martin Exp $"); #ifdef _KERNEL_OPT #include "opt_sdmmc.h" #endif #include #include #include #include #include #include #ifdef SDMMCCISDEBUG #define DPRINTF(s) printf s #else #define DPRINTF(s) /**/ #endif static uint32_t sdmmc_cisptr(struct sdmmc_function *); static void decode_funce_common(struct sdmmc_function *, struct sdmmc_cis *, int, uint32_t); static void decode_funce_function(struct sdmmc_function *, struct sdmmc_cis *, int, uint32_t); static void decode_vers_1(struct sdmmc_function *, struct sdmmc_cis *, int, uint32_t); static uint32_t sdmmc_cisptr(struct sdmmc_function *sf) { uint32_t cisptr = 0; /* CIS pointer stored in little-endian format. */ if (sf->number == 0) { cisptr |= sdmmc_io_read_1(sf, SD_IO_CCCR_CISPTR + 0) << 0; cisptr |= sdmmc_io_read_1(sf, SD_IO_CCCR_CISPTR + 1) << 8; cisptr |= sdmmc_io_read_1(sf, SD_IO_CCCR_CISPTR + 2) << 16; } else { struct sdmmc_function *sf0 = sf->sc->sc_fn0; int num = sf->number; cisptr |= sdmmc_io_read_1(sf0, SD_IO_FBR(num) + 9) << 0; cisptr |= sdmmc_io_read_1(sf0, SD_IO_FBR(num) + 10) << 8; cisptr |= sdmmc_io_read_1(sf0, SD_IO_FBR(num) + 11) << 16; } return cisptr; } static void decode_funce_common(struct sdmmc_function *sf, struct sdmmc_cis *cis, int tpllen, uint32_t reg) { static const int speed_val[] = { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 }; static const int speed_unit[] = { 10, 100, 1000, 10000, }; struct sdmmc_function *sf0 = sf->sc->sc_fn0; device_t dev = sf->sc->sc_dev; int fn0_blk_size, max_tran_speed; if (sf->number != 0) { aprint_error_dev(dev, "CISTPL_FUNCE(common) found in function\n"); return; } if (tpllen < 4) { aprint_error_dev(dev, "CISTPL_FUNCE(common) too short\n"); return; } fn0_blk_size = sdmmc_io_read_1(sf0, reg++); fn0_blk_size |= sdmmc_io_read_1(sf0, reg++) << 8; max_tran_speed = sdmmc_io_read_1(sf0, reg++); sf->csd.tran_speed = speed_val[max_tran_speed >> 3] * speed_unit[max_tran_speed & 7]; DPRINTF( ("CISTPL_FUNCE: FN0_BLK_SIZE=0x%x, MAX_TRAN_SPEED=0x%x(%dkHz)\n", fn0_blk_size, max_tran_speed, sf->csd.tran_speed)); } static void decode_funce_function(struct sdmmc_function *sf, struct sdmmc_cis *cis, int tpllen, uint32_t reg) { struct sdmmc_function *sf0 = sf->sc->sc_fn0; device_t dev = sf->sc->sc_dev; int sdiox_cccrx, sdiox, max_blk_size; sdiox_cccrx = sdmmc_io_read_1(sf0, SD_IO_CCCR_CCCR_SDIO_REV); sdiox = SD_IO_CCCR_SDIO_REV(sdiox_cccrx); if (sf->number == 0) { aprint_error_dev(dev, "CISTPL_FUNCE(function) found in common\n"); return; } if (sdiox == CCCR_SDIO_REV_1_00 && tpllen < 0x1c) { aprint_error_dev(dev, "CISTPL_FUNCE(function) too short (v1.00)\n"); return; } else if (sdiox != CCCR_SDIO_REV_1_00 && tpllen < 0x2a) { aprint_error_dev(dev, "CISTPL_FUNCE(function) too short\n"); return; } max_blk_size = sdmmc_io_read_1(sf0, reg + 11); max_blk_size |= sdmmc_io_read_1(sf0, reg + 12) << 8; device_printf(dev, "MAX_BLK_SIZE%d = %d\n", sf->number, max_blk_size); DPRINTF(("CISTPL_FUNCE: MAX_BLK_SIZE=0x%x\n", max_blk_size)); } static void decode_vers_1(struct sdmmc_function *sf, struct sdmmc_cis *cis, int tpllen, uint32_t reg) { struct sdmmc_function *sf0 = sf->sc->sc_fn0; device_t dev = sf->sc->sc_dev; int start, ch, count, i; if (tpllen < 2) { aprint_error_dev(dev, "CISTPL_VERS_1 too short\n"); return; } cis->cis1_major = sdmmc_io_read_1(sf0, reg++); cis->cis1_minor = sdmmc_io_read_1(sf0, reg++); for (count = 0, start = 0, i = 0; (count < 4) && ((i + 4) < 256); i++) { ch = sdmmc_io_read_1(sf0, reg + i); if (ch == 0xff) break; cis->cis1_info_buf[i] = ch; if (ch == 0) { cis->cis1_info[count] = cis->cis1_info_buf + start; start = i + 1; count++; } } DPRINTF(("CISTPL_VERS_1\n")); } int sdmmc_read_cis(struct sdmmc_function *sf, struct sdmmc_cis *cis) { struct sdmmc_function *sf0 = sf->sc->sc_fn0; device_t dev = sf->sc->sc_dev; uint32_t reg; uint8_t tplcode, tpllen; memset(cis, 0, sizeof *cis); reg = sdmmc_cisptr(sf); if (reg < SD_IO_CIS_START || reg >= (SD_IO_CIS_START + SD_IO_CIS_SIZE - 16)) { aprint_error_dev(dev, "bad CIS ptr %#x\n", reg); return 1; } for (;;) { tplcode = sdmmc_io_read_1(sf0, reg++); if (tplcode == PCMCIA_CISTPL_NULL) { DPRINTF((" 00\nCISTPL_NONE\n")); continue; } tpllen = sdmmc_io_read_1(sf0, reg++); if (tplcode == PCMCIA_CISTPL_END || tpllen == 0) { if (tplcode != 0xff) aprint_error_dev(dev, "CIS parse error at %d, " "tuple code %#x, length %d\n", reg, tplcode, tpllen); else { DPRINTF((" ff\nCISTPL_END\n")); } break; } #ifdef SDMMCCISDEBUG { int i; /* print the tuple */ DPRINTF((" %02x %02x", tplcode, tpllen)); for (i = 0; i < tpllen; i++) { DPRINTF((" %02x", sdmmc_io_read_1(sf0, reg + i))); if ((i % 16) == 13) DPRINTF(("\n")); } if ((i % 16) != 14) DPRINTF(("\n")); } #endif switch (tplcode) { case PCMCIA_CISTPL_FUNCE: if (sdmmc_io_read_1(sf0, reg++) == 0) decode_funce_common(sf, cis, tpllen, reg); else decode_funce_function(sf, cis, tpllen, reg); reg += (tpllen - 1); break; case PCMCIA_CISTPL_FUNCID: if (tpllen < 2) { aprint_error_dev(dev, "bad CISTPL_FUNCID length\n"); reg += tpllen; break; } cis->function = sdmmc_io_read_1(sf0, reg); DPRINTF(("CISTPL_FUNCID\n")); reg += tpllen; break; case PCMCIA_CISTPL_MANFID: if (tpllen < 4) { aprint_error_dev(dev, "bad CISTPL_MANFID length\n"); reg += tpllen; break; } cis->manufacturer = sdmmc_io_read_1(sf0, reg++); cis->manufacturer |= sdmmc_io_read_1(sf0, reg++) << 8; cis->product = sdmmc_io_read_1(sf0, reg++); cis->product |= sdmmc_io_read_1(sf0, reg++) << 8; DPRINTF(("CISTPL_MANFID\n")); break; case PCMCIA_CISTPL_VERS_1: decode_vers_1(sf, cis, tpllen, reg); reg += tpllen; break; case PCMCIA_CISTPL_SDIO: aprint_normal_dev(dev, "SDIO function\n"); reg += tpllen; break; default: /* * Tuple codes between 80h-8Fh are vendor unique. * Print a warning about all other codes. */ if ((tplcode & 0xf0) != 0x80) aprint_error_dev(dev, "unknown tuple code %#x, length %d\n", tplcode, tpllen); reg += tpllen; break; } } return 0; } void sdmmc_print_cis(struct sdmmc_function *sf) { device_t dev = sf->sc->sc_dev; struct sdmmc_cis *cis = &sf->cis; int i; printf("%s: CIS version %u.%u\n", device_xname(dev), cis->cis1_major, cis->cis1_minor); printf("%s: CIS info: ", device_xname(dev)); for (i = 0; i < 4; i++) { if (cis->cis1_info[i] == NULL) break; if (i != 0) aprint_verbose(", "); printf("%s", cis->cis1_info[i]); } printf("\n"); printf("%s: Manufacturer code 0x%x, product 0x%x\n", device_xname(dev), cis->manufacturer, cis->product); printf("%s: function %d: ", device_xname(dev), sf->number); printf("\n"); } void sdmmc_check_cis_quirks(struct sdmmc_function *sf) { char *p; int i; if (sf->cis.manufacturer == SDMMC_VENDOR_SPECTEC && sf->cis.product == SDMMC_PRODUCT_SPECTEC_SDW820) { /* This card lacks the VERS_1 tuple. */ static const char cis1_info[] = "Spectec\0SDIO WLAN Card\0SDW-820\0\0"; sf->cis.cis1_major = 0x01; sf->cis.cis1_minor = 0x00; p = sf->cis.cis1_info_buf; strlcpy(p, cis1_info, sizeof(sf->cis.cis1_info_buf)); for (i = 0; i < 4; i++) { sf->cis.cis1_info[i] = p; p += strlen(p) + 1; } } }