/* $NetBSD: sdmmc_cis.c,v 1.1 2009/04/21 03:00:30 nonaka 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 1.1 2009/04/21 03:00:30 nonaka Exp $"); #include #include #include #include #include #ifdef SDMMC_DEBUG #define DPRINTF(s) printf s #else #define DPRINTF(s) /**/ #endif static uint32_t sdmmc_cisptr(struct sdmmc_function *); static uint32_t sdmmc_cisptr(struct sdmmc_function *sf) { uint32_t cisptr = 0; /* XXX where is the per-function CIS pointer register? */ if (sf->number != 0) return SD_IO_CIS_START; /* XXX is the CIS pointer stored in little-endian format? */ 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; return cisptr; } int sdmmc_read_cis(struct sdmmc_function *sf, struct sdmmc_cis *cis) { device_t dev = sf->sc->sc_dev; uint32_t reg; uint8_t tplcode; uint8_t tpllen; int start, ch, count; int i; memset(cis, 0, sizeof *cis); /* XXX read per-function CIS */ if (sf->number != 0) return 1; 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(sf, reg++); tpllen = sdmmc_io_read_1(sf, reg++); if (tplcode == 0xff || tpllen == 0) { if (tplcode != 0xff) aprint_error_dev(dev, "CIS parse error at %d, " "tuple code %#x, length %d\n", reg, tplcode, tpllen); break; } switch (tplcode) { case SD_IO_CISTPL_FUNCID: if (tpllen < 2) { aprint_error_dev(dev, "bad CISTPL_FUNCID length\n"); reg += tpllen; break; } cis->function = sdmmc_io_read_1(sf, reg); reg += tpllen; break; case SD_IO_CISTPL_MANFID: if (tpllen < 4) { aprint_error_dev(dev, "bad CISTPL_MANFID length\n"); reg += tpllen; break; } cis->manufacturer = sdmmc_io_read_1(sf, reg++); cis->manufacturer |= sdmmc_io_read_1(sf, reg++) << 8; cis->product = sdmmc_io_read_1(sf, reg++); cis->product |= sdmmc_io_read_1(sf, reg++) << 8; break; case SD_IO_CISTPL_VERS_1: if (tpllen < 2) { aprint_error_dev(dev, "CISTPL_VERS_1 too short\n"); reg += tpllen; break; } cis->cis1_major = sdmmc_io_read_1(sf, reg++); cis->cis1_minor = sdmmc_io_read_1(sf, reg++); for (count = 0, start = 0, i = 0; (count < 4) && ((i + 4) < 256); i++) { ch = sdmmc_io_read_1(sf, 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++; } } reg += tpllen - 2; break; default: 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); switch (sf->cis.function) { case SDMMC_FUNCTION_WLAN: printf("wireless network adapter"); break; default: printf("unknown function (%d)", sf->cis.function); break; } 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; } } }