/* $NetBSD: sdhc.c,v 1.100.4.3 2021/12/03 19:31:19 martin Exp $ */ /* $OpenBSD: sdhc.c,v 1.25 2009/01/13 19:44:20 grange 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. */ /* * SD Host Controller driver based on the SD Host Controller Standard * Simplified Specification Version 1.00 (www.sdcard.com). */ #include __KERNEL_RCSID(0, "$NetBSD: sdhc.c,v 1.100.4.3 2021/12/03 19:31:19 martin Exp $"); #ifdef _KERNEL_OPT #include "opt_sdmmc.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef SDHC_DEBUG int sdhcdebug = 1; #define DPRINTF(n,s) do { if ((n) <= sdhcdebug) printf s; } while (0) void sdhc_dump_regs(struct sdhc_host *); #else #define DPRINTF(n,s) do {} while (0) #endif #define SDHC_COMMAND_TIMEOUT hz #define SDHC_BUFFER_TIMEOUT hz #define SDHC_TRANSFER_TIMEOUT hz #define SDHC_DMA_TIMEOUT (hz*3) #define SDHC_TUNING_TIMEOUT hz struct sdhc_host { struct sdhc_softc *sc; /* host controller device */ bus_space_tag_t iot; /* host register set tag */ bus_space_handle_t ioh; /* host register set handle */ bus_size_t ios; /* host register space size */ bus_dma_tag_t dmat; /* host DMA tag */ device_t sdmmc; /* generic SD/MMC device */ u_int clkbase; /* base clock frequency in KHz */ int maxblklen; /* maximum block length */ uint32_t ocr; /* OCR value from capabilities */ uint8_t regs[14]; /* host controller state */ uint16_t intr_status; /* soft interrupt status */ uint16_t intr_error_status; /* soft error status */ kmutex_t intr_lock; kcondvar_t intr_cv; callout_t tuning_timer; int tuning_timing; u_int tuning_timer_count; u_int tuning_timer_pending; int specver; /* spec. version */ uint32_t flags; /* flags for this host */ #define SHF_USE_DMA 0x0001 #define SHF_USE_4BIT_MODE 0x0002 #define SHF_USE_8BIT_MODE 0x0004 #define SHF_MODE_DMAEN 0x0008 /* needs SDHC_DMA_ENABLE in mode */ #define SHF_USE_ADMA2_32 0x0010 #define SHF_USE_ADMA2_64 0x0020 #define SHF_USE_ADMA2_MASK 0x0030 bus_dmamap_t adma_map; bus_dma_segment_t adma_segs[1]; void *adma2; }; #define HDEVNAME(hp) (device_xname((hp)->sc->sc_dev)) static uint8_t hread1(struct sdhc_host *hp, bus_size_t reg) { if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) return bus_space_read_1(hp->iot, hp->ioh, reg); return bus_space_read_4(hp->iot, hp->ioh, reg & -4) >> (8 * (reg & 3)); } static uint16_t hread2(struct sdhc_host *hp, bus_size_t reg) { if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) return bus_space_read_2(hp->iot, hp->ioh, reg); return bus_space_read_4(hp->iot, hp->ioh, reg & -4) >> (8 * (reg & 2)); } #define HREAD1(hp, reg) hread1(hp, reg) #define HREAD2(hp, reg) hread2(hp, reg) #define HREAD4(hp, reg) \ (bus_space_read_4((hp)->iot, (hp)->ioh, (reg))) static void hwrite1(struct sdhc_host *hp, bus_size_t o, uint8_t val) { if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { bus_space_write_1(hp->iot, hp->ioh, o, val); } else { const size_t shift = 8 * (o & 3); o &= -4; uint32_t tmp = bus_space_read_4(hp->iot, hp->ioh, o); tmp = (val << shift) | (tmp & ~(0xffU << shift)); bus_space_write_4(hp->iot, hp->ioh, o, tmp); } } static void hwrite2(struct sdhc_host *hp, bus_size_t o, uint16_t val) { if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { bus_space_write_2(hp->iot, hp->ioh, o, val); } else { const size_t shift = 8 * (o & 2); o &= -4; uint32_t tmp = bus_space_read_4(hp->iot, hp->ioh, o); tmp = (val << shift) | (tmp & ~(0xffffU << shift)); bus_space_write_4(hp->iot, hp->ioh, o, tmp); } } #define HWRITE1(hp, reg, val) hwrite1(hp, reg, val) #define HWRITE2(hp, reg, val) hwrite2(hp, reg, val) #define HWRITE4(hp, reg, val) \ bus_space_write_4((hp)->iot, (hp)->ioh, (reg), (val)) #define HCLR1(hp, reg, bits) \ do if (bits) HWRITE1((hp), (reg), HREAD1((hp), (reg)) & ~(bits)); while (0) #define HCLR2(hp, reg, bits) \ do if (bits) HWRITE2((hp), (reg), HREAD2((hp), (reg)) & ~(bits)); while (0) #define HCLR4(hp, reg, bits) \ do if (bits) HWRITE4((hp), (reg), HREAD4((hp), (reg)) & ~(bits)); while (0) #define HSET1(hp, reg, bits) \ do if (bits) HWRITE1((hp), (reg), HREAD1((hp), (reg)) | (bits)); while (0) #define HSET2(hp, reg, bits) \ do if (bits) HWRITE2((hp), (reg), HREAD2((hp), (reg)) | (bits)); while (0) #define HSET4(hp, reg, bits) \ do if (bits) HWRITE4((hp), (reg), HREAD4((hp), (reg)) | (bits)); while (0) static int sdhc_host_reset(sdmmc_chipset_handle_t); static int sdhc_host_reset1(sdmmc_chipset_handle_t); static uint32_t sdhc_host_ocr(sdmmc_chipset_handle_t); static int sdhc_host_maxblklen(sdmmc_chipset_handle_t); static int sdhc_card_detect(sdmmc_chipset_handle_t); static int sdhc_write_protect(sdmmc_chipset_handle_t); static int sdhc_bus_power(sdmmc_chipset_handle_t, uint32_t); static int sdhc_bus_clock_ddr(sdmmc_chipset_handle_t, int, bool); static int sdhc_bus_width(sdmmc_chipset_handle_t, int); static int sdhc_bus_rod(sdmmc_chipset_handle_t, int); static void sdhc_card_enable_intr(sdmmc_chipset_handle_t, int); static void sdhc_card_intr_ack(sdmmc_chipset_handle_t); static void sdhc_exec_command(sdmmc_chipset_handle_t, struct sdmmc_command *); static int sdhc_signal_voltage(sdmmc_chipset_handle_t, int); static int sdhc_execute_tuning1(struct sdhc_host *, int); static int sdhc_execute_tuning(sdmmc_chipset_handle_t, int); static void sdhc_tuning_timer(void *); static void sdhc_hw_reset(sdmmc_chipset_handle_t); static int sdhc_start_command(struct sdhc_host *, struct sdmmc_command *); static int sdhc_wait_state(struct sdhc_host *, uint32_t, uint32_t); static int sdhc_soft_reset(struct sdhc_host *, int); static int sdhc_wait_intr(struct sdhc_host *, int, int, bool); static void sdhc_transfer_data(struct sdhc_host *, struct sdmmc_command *); static int sdhc_transfer_data_dma(struct sdhc_host *, struct sdmmc_command *); static int sdhc_transfer_data_pio(struct sdhc_host *, struct sdmmc_command *); static void sdhc_read_data_pio(struct sdhc_host *, uint8_t *, u_int); static void sdhc_write_data_pio(struct sdhc_host *, uint8_t *, u_int); static void esdhc_read_data_pio(struct sdhc_host *, uint8_t *, u_int); static void esdhc_write_data_pio(struct sdhc_host *, uint8_t *, u_int); static struct sdmmc_chip_functions sdhc_functions = { /* host controller reset */ .host_reset = sdhc_host_reset, /* host controller capabilities */ .host_ocr = sdhc_host_ocr, .host_maxblklen = sdhc_host_maxblklen, /* card detection */ .card_detect = sdhc_card_detect, /* write protect */ .write_protect = sdhc_write_protect, /* bus power, clock frequency, width and ROD(OpenDrain/PushPull) */ .bus_power = sdhc_bus_power, .bus_clock = NULL, /* see sdhc_bus_clock_ddr */ .bus_width = sdhc_bus_width, .bus_rod = sdhc_bus_rod, /* command execution */ .exec_command = sdhc_exec_command, /* card interrupt */ .card_enable_intr = sdhc_card_enable_intr, .card_intr_ack = sdhc_card_intr_ack, /* UHS functions */ .signal_voltage = sdhc_signal_voltage, .bus_clock_ddr = sdhc_bus_clock_ddr, .execute_tuning = sdhc_execute_tuning, .hw_reset = sdhc_hw_reset, }; static int sdhc_cfprint(void *aux, const char *pnp) { const struct sdmmcbus_attach_args * const saa = aux; const struct sdhc_host * const hp = saa->saa_sch; if (pnp) { aprint_normal("sdmmc at %s", pnp); } for (size_t host = 0; host < hp->sc->sc_nhosts; host++) { if (hp->sc->sc_host[host] == hp) { aprint_normal(" slot %zu", host); } } return UNCONF; } /* * Called by attachment driver. For each SD card slot there is one SD * host controller standard register set. (1.3) */ int sdhc_host_found(struct sdhc_softc *sc, bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t iosize) { struct sdmmcbus_attach_args saa; struct sdhc_host *hp; uint32_t caps, caps2; uint16_t sdhcver; int error; /* Allocate one more host structure. */ hp = malloc(sizeof(struct sdhc_host), M_DEVBUF, M_WAITOK|M_ZERO); if (hp == NULL) { aprint_error_dev(sc->sc_dev, "couldn't alloc memory (sdhc host)\n"); goto err1; } sc->sc_host[sc->sc_nhosts++] = hp; /* Fill in the new host structure. */ hp->sc = sc; hp->iot = iot; hp->ioh = ioh; hp->ios = iosize; hp->dmat = sc->sc_dmat; mutex_init(&hp->intr_lock, MUTEX_DEFAULT, IPL_SDMMC); cv_init(&hp->intr_cv, "sdhcintr"); callout_init(&hp->tuning_timer, CALLOUT_MPSAFE); callout_setfunc(&hp->tuning_timer, sdhc_tuning_timer, hp); if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { sdhcver = SDHC_SPEC_VERS_300 << SDHC_SPEC_VERS_SHIFT; } else if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) { sdhcver = HREAD4(hp, SDHC_ESDHC_HOST_CTL_VERSION); } else if (iosize <= SDHC_HOST_CTL_VERSION) { sdhcver = SDHC_SPEC_NOVERS << SDHC_SPEC_VERS_SHIFT; } else { sdhcver = HREAD2(hp, SDHC_HOST_CTL_VERSION); } aprint_normal_dev(sc->sc_dev, "SDHC "); hp->specver = SDHC_SPEC_VERSION(sdhcver); switch (SDHC_SPEC_VERSION(sdhcver)) { case SDHC_SPEC_VERS_100: aprint_normal("1.0"); break; case SDHC_SPEC_VERS_200: aprint_normal("2.0"); break; case SDHC_SPEC_VERS_300: aprint_normal("3.0"); break; case SDHC_SPEC_VERS_400: aprint_normal("4.0"); break; case SDHC_SPEC_VERS_410: aprint_normal("4.1"); break; case SDHC_SPEC_VERS_420: aprint_normal("4.2"); break; case SDHC_SPEC_NOVERS: hp->specver = -1; aprint_normal("NO-VERS"); break; default: aprint_normal("unknown version(0x%x)", SDHC_SPEC_VERSION(sdhcver)); break; } if (SDHC_SPEC_VERSION(sdhcver) != SDHC_SPEC_NOVERS) aprint_normal(", rev %u", SDHC_VENDOR_VERSION(sdhcver)); /* * Reset the host controller and enable interrupts. */ (void)sdhc_host_reset(hp); if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { /* init uSDHC registers */ HWRITE4(hp, SDHC_MMC_BOOT, 0); HWRITE4(hp, SDHC_HOST_CTL, SDHC_USDHC_BURST_LEN_EN | SDHC_USDHC_HOST_CTL_RESV23 | SDHC_USDHC_EMODE_LE); HWRITE4(hp, SDHC_WATERMARK_LEVEL, (0x10 << SDHC_WATERMARK_WR_BRST_SHIFT) | (0x40 << SDHC_WATERMARK_WRITE_SHIFT) | (0x10 << SDHC_WATERMARK_RD_BRST_SHIFT) | (0x40 << SDHC_WATERMARK_READ_SHIFT)); HSET4(hp, SDHC_VEND_SPEC, SDHC_VEND_SPEC_MBO | SDHC_VEND_SPEC_CARD_CLK_SOFT_EN | SDHC_VEND_SPEC_IPG_PERCLK_SOFT_EN | SDHC_VEND_SPEC_HCLK_SOFT_EN | SDHC_VEND_SPEC_IPG_CLK_SOFT_EN | SDHC_VEND_SPEC_AC12_WR_CHKBUSY_EN | SDHC_VEND_SPEC_FRC_SDCLK_ON); } /* Determine host capabilities. */ if (ISSET(sc->sc_flags, SDHC_FLAG_HOSTCAPS)) { caps = sc->sc_caps; caps2 = sc->sc_caps2; } else if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { /* uSDHC capability register is little bit different */ caps = HREAD4(hp, SDHC_CAPABILITIES); caps |= SDHC_8BIT_SUPP; if (caps & SDHC_ADMA1_SUPP) caps |= SDHC_ADMA2_SUPP; sc->sc_caps = caps; /* uSDHC has no SDHC_CAPABILITIES2 register */ caps2 = sc->sc_caps2 = SDHC_SDR50_SUPP | SDHC_DDR50_SUPP; } else { caps = sc->sc_caps = HREAD4(hp, SDHC_CAPABILITIES); if (hp->specver >= SDHC_SPEC_VERS_300) { caps2 = sc->sc_caps2 = HREAD4(hp, SDHC_CAPABILITIES2); } else { caps2 = sc->sc_caps2 = 0; } } const u_int retuning_mode = (caps2 >> SDHC_RETUNING_MODES_SHIFT) & SDHC_RETUNING_MODES_MASK; if (retuning_mode == SDHC_RETUNING_MODE_1) { hp->tuning_timer_count = (caps2 >> SDHC_TIMER_COUNT_SHIFT) & SDHC_TIMER_COUNT_MASK; if (hp->tuning_timer_count == 0xf) hp->tuning_timer_count = 0; if (hp->tuning_timer_count) hp->tuning_timer_count = 1 << (hp->tuning_timer_count - 1); } /* * Use DMA if the host system and the controller support it. * Supports integrated or external DMA egine, with or without * SDHC_DMA_ENABLE in the command. */ if (ISSET(sc->sc_flags, SDHC_FLAG_FORCE_DMA) || (ISSET(sc->sc_flags, SDHC_FLAG_USE_DMA && ISSET(caps, SDHC_DMA_SUPPORT)))) { SET(hp->flags, SHF_USE_DMA); if (ISSET(sc->sc_flags, SDHC_FLAG_USE_ADMA2) && ISSET(caps, SDHC_ADMA2_SUPP)) { SET(hp->flags, SHF_MODE_DMAEN); /* * 64-bit mode was present in the 2.00 spec, removed * from 3.00, and re-added in 4.00 with a different * descriptor layout. We only support 2.00 and 3.00 * descriptors for now. */ if (hp->specver == SDHC_SPEC_VERS_200 && ISSET(caps, SDHC_64BIT_SYS_BUS)) { SET(hp->flags, SHF_USE_ADMA2_64); aprint_normal(", 64-bit ADMA2"); } else { SET(hp->flags, SHF_USE_ADMA2_32); aprint_normal(", 32-bit ADMA2"); } } else { if (!ISSET(sc->sc_flags, SDHC_FLAG_EXTERNAL_DMA) || ISSET(sc->sc_flags, SDHC_FLAG_EXTDMA_DMAEN)) SET(hp->flags, SHF_MODE_DMAEN); if (sc->sc_vendor_transfer_data_dma) { aprint_normal(", platform DMA"); } else { aprint_normal(", SDMA"); } } } else { aprint_normal(", PIO"); } /* * Determine the base clock frequency. (2.2.24) */ if (hp->specver >= SDHC_SPEC_VERS_300) { hp->clkbase = SDHC_BASE_V3_FREQ_KHZ(caps); } else { hp->clkbase = SDHC_BASE_FREQ_KHZ(caps); } if (hp->clkbase == 0 || ISSET(sc->sc_flags, SDHC_FLAG_NO_CLKBASE)) { if (sc->sc_clkbase == 0) { /* The attachment driver must tell us. */ aprint_error_dev(sc->sc_dev, "unknown base clock frequency\n"); goto err; } hp->clkbase = sc->sc_clkbase; } if (hp->clkbase < 10000 || hp->clkbase > 10000 * 256) { /* SDHC 1.0 supports only 10-63 MHz. */ aprint_error_dev(sc->sc_dev, "base clock frequency out of range: %u MHz\n", hp->clkbase / 1000); goto err; } aprint_normal(", %u kHz", hp->clkbase); /* * XXX Set the data timeout counter value according to * capabilities. (2.2.15) */ HWRITE1(hp, SDHC_TIMEOUT_CTL, SDHC_TIMEOUT_MAX); #if 1 if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) HWRITE4(hp, SDHC_NINTR_STATUS, SDHC_CMD_TIMEOUT_ERROR << 16); #endif if (ISSET(caps, SDHC_EMBEDDED_SLOT)) aprint_normal(", embedded slot"); /* * Determine SD bus voltage levels supported by the controller. */ aprint_normal(","); if (ISSET(caps, SDHC_HIGH_SPEED_SUPP)) { SET(hp->ocr, MMC_OCR_HCS); aprint_normal(" HS"); } if (ISSET(caps2, SDHC_SDR50_SUPP)) { SET(hp->ocr, MMC_OCR_S18A); aprint_normal(" SDR50"); } if (ISSET(caps2, SDHC_DDR50_SUPP)) { SET(hp->ocr, MMC_OCR_S18A); aprint_normal(" DDR50"); } if (ISSET(caps2, SDHC_SDR104_SUPP)) { SET(hp->ocr, MMC_OCR_S18A); aprint_normal(" SDR104 HS200"); } if (ISSET(caps, SDHC_VOLTAGE_SUPP_1_8V)) { SET(hp->ocr, MMC_OCR_1_65V_1_95V); aprint_normal(" 1.8V"); } if (ISSET(caps, SDHC_VOLTAGE_SUPP_3_0V)) { SET(hp->ocr, MMC_OCR_2_9V_3_0V | MMC_OCR_3_0V_3_1V); aprint_normal(" 3.0V"); } if (ISSET(caps, SDHC_VOLTAGE_SUPP_3_3V)) { SET(hp->ocr, MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V); aprint_normal(" 3.3V"); } if (hp->specver >= SDHC_SPEC_VERS_300) { aprint_normal(", re-tuning mode %d", retuning_mode + 1); if (hp->tuning_timer_count) aprint_normal(" (%us timer)", hp->tuning_timer_count); } /* * Determine the maximum block length supported by the host * controller. (2.2.24) */ switch((caps >> SDHC_MAX_BLK_LEN_SHIFT) & SDHC_MAX_BLK_LEN_MASK) { case SDHC_MAX_BLK_LEN_512: hp->maxblklen = 512; break; case SDHC_MAX_BLK_LEN_1024: hp->maxblklen = 1024; break; case SDHC_MAX_BLK_LEN_2048: hp->maxblklen = 2048; break; case SDHC_MAX_BLK_LEN_4096: hp->maxblklen = 4096; break; default: aprint_error_dev(sc->sc_dev, "max block length unknown\n"); goto err; } aprint_normal(", %u byte blocks", hp->maxblklen); aprint_normal("\n"); if (ISSET(hp->flags, SHF_USE_ADMA2_MASK)) { int rseg; /* Allocate ADMA2 descriptor memory */ error = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, PAGE_SIZE, hp->adma_segs, 1, &rseg, BUS_DMA_WAITOK); if (error) { aprint_error_dev(sc->sc_dev, "ADMA2 dmamem_alloc failed (%d)\n", error); goto adma_done; } error = bus_dmamem_map(sc->sc_dmat, hp->adma_segs, rseg, PAGE_SIZE, (void **)&hp->adma2, BUS_DMA_WAITOK); if (error) { aprint_error_dev(sc->sc_dev, "ADMA2 dmamem_map failed (%d)\n", error); goto adma_done; } error = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, BUS_DMA_WAITOK, &hp->adma_map); if (error) { aprint_error_dev(sc->sc_dev, "ADMA2 dmamap_create failed (%d)\n", error); goto adma_done; } error = bus_dmamap_load(sc->sc_dmat, hp->adma_map, hp->adma2, PAGE_SIZE, NULL, BUS_DMA_WAITOK|BUS_DMA_WRITE); if (error) { aprint_error_dev(sc->sc_dev, "ADMA2 dmamap_load failed (%d)\n", error); goto adma_done; } memset(hp->adma2, 0, PAGE_SIZE); adma_done: if (error) CLR(hp->flags, SHF_USE_ADMA2_MASK); } /* * Attach the generic SD/MMC bus driver. (The bus driver must * not invoke any chipset functions before it is attached.) */ memset(&saa, 0, sizeof(saa)); saa.saa_busname = "sdmmc"; saa.saa_sct = &sdhc_functions; saa.saa_sch = hp; saa.saa_dmat = hp->dmat; saa.saa_clkmax = hp->clkbase; if (ISSET(sc->sc_flags, SDHC_FLAG_HAVE_CGM)) saa.saa_clkmin = hp->clkbase / 256 / 2046; else if (ISSET(sc->sc_flags, SDHC_FLAG_HAVE_DVS)) saa.saa_clkmin = hp->clkbase / 256 / 16; else if (hp->sc->sc_clkmsk != 0) saa.saa_clkmin = hp->clkbase / (hp->sc->sc_clkmsk >> (ffs(hp->sc->sc_clkmsk) - 1)); else if (hp->specver >= SDHC_SPEC_VERS_300) saa.saa_clkmin = hp->clkbase / 0x3ff; else saa.saa_clkmin = hp->clkbase / 256; if (!ISSET(sc->sc_flags, SDHC_FLAG_NO_AUTO_STOP)) saa.saa_caps |= SMC_CAPS_AUTO_STOP; saa.saa_caps |= SMC_CAPS_4BIT_MODE; if (ISSET(sc->sc_flags, SDHC_FLAG_8BIT_MODE)) saa.saa_caps |= SMC_CAPS_8BIT_MODE; if (ISSET(caps, SDHC_HIGH_SPEED_SUPP)) saa.saa_caps |= SMC_CAPS_SD_HIGHSPEED; if (ISSET(caps2, SDHC_SDR104_SUPP)) saa.saa_caps |= SMC_CAPS_UHS_SDR104 | SMC_CAPS_UHS_SDR50 | SMC_CAPS_MMC_HS200; if (ISSET(caps2, SDHC_SDR50_SUPP)) saa.saa_caps |= SMC_CAPS_UHS_SDR50; if (ISSET(caps2, SDHC_DDR50_SUPP)) saa.saa_caps |= SMC_CAPS_UHS_DDR50; if (ISSET(hp->flags, SHF_USE_DMA)) { saa.saa_caps |= SMC_CAPS_DMA; if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) saa.saa_caps |= SMC_CAPS_MULTI_SEG_DMA; } if (ISSET(sc->sc_flags, SDHC_FLAG_SINGLE_ONLY)) saa.saa_caps |= SMC_CAPS_SINGLE_ONLY; if (ISSET(sc->sc_flags, SDHC_FLAG_POLL_CARD_DET)) saa.saa_caps |= SMC_CAPS_POLL_CARD_DET; hp->sdmmc = config_found(sc->sc_dev, &saa, sdhc_cfprint); return 0; err: callout_destroy(&hp->tuning_timer); cv_destroy(&hp->intr_cv); mutex_destroy(&hp->intr_lock); free(hp, M_DEVBUF); sc->sc_host[--sc->sc_nhosts] = NULL; err1: return 1; } int sdhc_detach(struct sdhc_softc *sc, int flags) { struct sdhc_host *hp; int rv = 0; for (size_t n = 0; n < sc->sc_nhosts; n++) { hp = sc->sc_host[n]; if (hp == NULL) continue; if (hp->sdmmc != NULL) { rv = config_detach(hp->sdmmc, flags); if (rv) break; hp->sdmmc = NULL; } /* disable interrupts */ if ((flags & DETACH_FORCE) == 0) { mutex_enter(&hp->intr_lock); if (ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { HWRITE4(hp, SDHC_NINTR_SIGNAL_EN, 0); } else { HWRITE2(hp, SDHC_NINTR_SIGNAL_EN, 0); } sdhc_soft_reset(hp, SDHC_RESET_ALL); mutex_exit(&hp->intr_lock); } callout_halt(&hp->tuning_timer, NULL); callout_destroy(&hp->tuning_timer); cv_destroy(&hp->intr_cv); mutex_destroy(&hp->intr_lock); if (hp->ios > 0) { bus_space_unmap(hp->iot, hp->ioh, hp->ios); hp->ios = 0; } if (ISSET(hp->flags, SHF_USE_ADMA2_MASK)) { bus_dmamap_unload(sc->sc_dmat, hp->adma_map); bus_dmamap_destroy(sc->sc_dmat, hp->adma_map); bus_dmamem_unmap(sc->sc_dmat, hp->adma2, PAGE_SIZE); bus_dmamem_free(sc->sc_dmat, hp->adma_segs, 1); } free(hp, M_DEVBUF); sc->sc_host[n] = NULL; } return rv; } bool sdhc_suspend(device_t dev, const pmf_qual_t *qual) { struct sdhc_softc *sc = device_private(dev); struct sdhc_host *hp; size_t i; /* XXX poll for command completion or suspend command * in progress */ /* Save the host controller state. */ for (size_t n = 0; n < sc->sc_nhosts; n++) { hp = sc->sc_host[n]; if (ISSET(sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { for (i = 0; i < sizeof hp->regs; i += 4) { uint32_t v = HREAD4(hp, i); hp->regs[i + 0] = (v >> 0); hp->regs[i + 1] = (v >> 8); if (i + 3 < sizeof hp->regs) { hp->regs[i + 2] = (v >> 16); hp->regs[i + 3] = (v >> 24); } } } else { for (i = 0; i < sizeof hp->regs; i++) { hp->regs[i] = HREAD1(hp, i); } } } return true; } bool sdhc_resume(device_t dev, const pmf_qual_t *qual) { struct sdhc_softc *sc = device_private(dev); struct sdhc_host *hp; size_t i; /* Restore the host controller state. */ for (size_t n = 0; n < sc->sc_nhosts; n++) { hp = sc->sc_host[n]; (void)sdhc_host_reset(hp); if (ISSET(sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { for (i = 0; i < sizeof hp->regs; i += 4) { if (i + 3 < sizeof hp->regs) { HWRITE4(hp, i, (hp->regs[i + 0] << 0) | (hp->regs[i + 1] << 8) | (hp->regs[i + 2] << 16) | (hp->regs[i + 3] << 24)); } else { HWRITE4(hp, i, (hp->regs[i + 0] << 0) | (hp->regs[i + 1] << 8)); } } } else { for (i = 0; i < sizeof hp->regs; i++) { HWRITE1(hp, i, hp->regs[i]); } } } return true; } bool sdhc_shutdown(device_t dev, int flags) { struct sdhc_softc *sc = device_private(dev); struct sdhc_host *hp; /* XXX chip locks up if we don't disable it before reboot. */ for (size_t i = 0; i < sc->sc_nhosts; i++) { hp = sc->sc_host[i]; (void)sdhc_host_reset(hp); } return true; } /* * Reset the host controller. Called during initialization, when * cards are removed, upon resume, and during error recovery. */ static int sdhc_host_reset1(sdmmc_chipset_handle_t sch) { struct sdhc_host *hp = (struct sdhc_host *)sch; uint32_t sdhcimask; int error; KASSERT(mutex_owned(&hp->intr_lock)); /* Disable all interrupts. */ if (ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { HWRITE4(hp, SDHC_NINTR_SIGNAL_EN, 0); } else { HWRITE2(hp, SDHC_NINTR_SIGNAL_EN, 0); } /* * Reset the entire host controller and wait up to 100ms for * the controller to clear the reset bit. */ error = sdhc_soft_reset(hp, SDHC_RESET_ALL); if (error) goto out; /* Set data timeout counter value to max for now. */ HWRITE1(hp, SDHC_TIMEOUT_CTL, SDHC_TIMEOUT_MAX); #if 1 if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) HWRITE4(hp, SDHC_NINTR_STATUS, SDHC_CMD_TIMEOUT_ERROR << 16); #endif /* Enable interrupts. */ sdhcimask = SDHC_CARD_REMOVAL | SDHC_CARD_INSERTION | SDHC_BUFFER_READ_READY | SDHC_BUFFER_WRITE_READY | SDHC_DMA_INTERRUPT | SDHC_BLOCK_GAP_EVENT | SDHC_TRANSFER_COMPLETE | SDHC_COMMAND_COMPLETE; if (ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { sdhcimask |= SDHC_EINTR_STATUS_MASK << 16; HWRITE4(hp, SDHC_NINTR_STATUS_EN, sdhcimask); sdhcimask ^= (SDHC_EINTR_STATUS_MASK ^ SDHC_EINTR_SIGNAL_MASK) << 16; sdhcimask ^= SDHC_BUFFER_READ_READY ^ SDHC_BUFFER_WRITE_READY; HWRITE4(hp, SDHC_NINTR_SIGNAL_EN, sdhcimask); } else { HWRITE2(hp, SDHC_NINTR_STATUS_EN, sdhcimask); HWRITE2(hp, SDHC_EINTR_STATUS_EN, SDHC_EINTR_STATUS_MASK); sdhcimask ^= SDHC_BUFFER_READ_READY ^ SDHC_BUFFER_WRITE_READY; HWRITE2(hp, SDHC_NINTR_SIGNAL_EN, sdhcimask); HWRITE2(hp, SDHC_EINTR_SIGNAL_EN, SDHC_EINTR_SIGNAL_MASK); } out: return error; } static int sdhc_host_reset(sdmmc_chipset_handle_t sch) { struct sdhc_host *hp = (struct sdhc_host *)sch; int error; mutex_enter(&hp->intr_lock); error = sdhc_host_reset1(sch); mutex_exit(&hp->intr_lock); return error; } static uint32_t sdhc_host_ocr(sdmmc_chipset_handle_t sch) { struct sdhc_host *hp = (struct sdhc_host *)sch; return hp->ocr; } static int sdhc_host_maxblklen(sdmmc_chipset_handle_t sch) { struct sdhc_host *hp = (struct sdhc_host *)sch; return hp->maxblklen; } /* * Return non-zero if the card is currently inserted. */ static int sdhc_card_detect(sdmmc_chipset_handle_t sch) { struct sdhc_host *hp = (struct sdhc_host *)sch; int r; if (hp->sc->sc_vendor_card_detect) return (*hp->sc->sc_vendor_card_detect)(hp->sc); r = ISSET(HREAD4(hp, SDHC_PRESENT_STATE), SDHC_CARD_INSERTED); return r ? 1 : 0; } /* * Return non-zero if the card is currently write-protected. */ static int sdhc_write_protect(sdmmc_chipset_handle_t sch) { struct sdhc_host *hp = (struct sdhc_host *)sch; int r; if (hp->sc->sc_vendor_write_protect) return (*hp->sc->sc_vendor_write_protect)(hp->sc); r = ISSET(HREAD4(hp, SDHC_PRESENT_STATE), SDHC_WRITE_PROTECT_SWITCH); return r ? 0 : 1; } /* * Set or change SD bus voltage and enable or disable SD bus power. * Return zero on success. */ static int sdhc_bus_power(sdmmc_chipset_handle_t sch, uint32_t ocr) { struct sdhc_host *hp = (struct sdhc_host *)sch; uint8_t vdd; int error = 0; const uint32_t pcmask = ~(SDHC_BUS_POWER | (SDHC_VOLTAGE_MASK << SDHC_VOLTAGE_SHIFT)); mutex_enter(&hp->intr_lock); /* * Disable bus power before voltage change. */ if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS) && !ISSET(hp->sc->sc_flags, SDHC_FLAG_NO_PWR0)) HWRITE1(hp, SDHC_POWER_CTL, 0); /* If power is disabled, reset the host and return now. */ if (ocr == 0) { (void)sdhc_host_reset1(hp); callout_halt(&hp->tuning_timer, &hp->intr_lock); goto out; } /* * Select the lowest voltage according to capabilities. */ ocr &= hp->ocr; if (ISSET(ocr, MMC_OCR_1_65V_1_95V)) { vdd = SDHC_VOLTAGE_1_8V; } else if (ISSET(ocr, MMC_OCR_2_9V_3_0V|MMC_OCR_3_0V_3_1V)) { vdd = SDHC_VOLTAGE_3_0V; } else if (ISSET(ocr, MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V)) { vdd = SDHC_VOLTAGE_3_3V; } else { /* Unsupported voltage level requested. */ error = EINVAL; goto out; } if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) { /* * Enable bus power. Wait at least 1 ms (or 74 clocks) plus * voltage ramp until power rises. */ if (ISSET(hp->sc->sc_flags, SDHC_FLAG_SINGLE_POWER_WRITE)) { HWRITE1(hp, SDHC_POWER_CTL, (vdd << SDHC_VOLTAGE_SHIFT) | SDHC_BUS_POWER); } else { HWRITE1(hp, SDHC_POWER_CTL, HREAD1(hp, SDHC_POWER_CTL) & pcmask); sdmmc_delay(1); HWRITE1(hp, SDHC_POWER_CTL, (vdd << SDHC_VOLTAGE_SHIFT)); sdmmc_delay(1); HSET1(hp, SDHC_POWER_CTL, SDHC_BUS_POWER); sdmmc_delay(10000); } /* * The host system may not power the bus due to battery low, * etc. In that case, the host controller should clear the * bus power bit. */ if (!ISSET(HREAD1(hp, SDHC_POWER_CTL), SDHC_BUS_POWER)) { error = ENXIO; goto out; } } out: mutex_exit(&hp->intr_lock); return error; } /* * Return the smallest possible base clock frequency divisor value * for the CLOCK_CTL register to produce `freq' (KHz). */ static bool sdhc_clock_divisor(struct sdhc_host *hp, u_int freq, u_int *divp) { u_int div; if (ISSET(hp->sc->sc_flags, SDHC_FLAG_HAVE_CGM)) { for (div = hp->clkbase / freq; div <= 0x3ff; div++) { if ((hp->clkbase / div) <= freq) { *divp = SDHC_SDCLK_CGM | ((div & 0x300) << SDHC_SDCLK_XDIV_SHIFT) | ((div & 0x0ff) << SDHC_SDCLK_DIV_SHIFT); //freq = hp->clkbase / div; return true; } } /* No divisor found. */ return false; } if (ISSET(hp->sc->sc_flags, SDHC_FLAG_HAVE_DVS)) { u_int dvs = (hp->clkbase + freq - 1) / freq; u_int roundup = dvs & 1; for (dvs >>= 1, div = 1; div <= 256; div <<= 1, dvs >>= 1) { if (dvs + roundup <= 16) { dvs += roundup - 1; *divp = (div << SDHC_SDCLK_DIV_SHIFT) | (dvs << SDHC_SDCLK_DVS_SHIFT); DPRINTF(2, ("%s: divisor for freq %u is %u * %u\n", HDEVNAME(hp), freq, div * 2, dvs + 1)); //freq = hp->clkbase / (div * 2) * (dvs + 1); return true; } /* * If we drop bits, we need to round up the divisor. */ roundup |= dvs & 1; } /* No divisor found. */ return false; } if (hp->sc->sc_clkmsk != 0) { div = howmany(hp->clkbase, freq); if (div > (hp->sc->sc_clkmsk >> (ffs(hp->sc->sc_clkmsk) - 1))) return false; *divp = div << (ffs(hp->sc->sc_clkmsk) - 1); //freq = hp->clkbase / div; return true; } if (hp->specver >= SDHC_SPEC_VERS_300) { div = howmany(hp->clkbase, freq); div = div > 1 ? howmany(div, 2) : 0; if (div > 0x3ff) return false; *divp = (((div >> 8) & SDHC_SDCLK_XDIV_MASK) << SDHC_SDCLK_XDIV_SHIFT) | (((div >> 0) & SDHC_SDCLK_DIV_MASK) << SDHC_SDCLK_DIV_SHIFT); //freq = hp->clkbase / (div ? div * 2 : 1); return true; } else { for (div = 1; div <= 256; div *= 2) { if ((hp->clkbase / div) <= freq) { *divp = (div / 2) << SDHC_SDCLK_DIV_SHIFT; //freq = hp->clkbase / div; return true; } } /* No divisor found. */ return false; } /* No divisor found. */ return false; } /* * Set or change SDCLK frequency or disable the SD clock. * Return zero on success. */ static int sdhc_bus_clock_ddr(sdmmc_chipset_handle_t sch, int freq, bool ddr) { struct sdhc_host *hp = (struct sdhc_host *)sch; u_int div; u_int timo; int16_t reg; int error = 0; bool present __diagused; mutex_enter(&hp->intr_lock); #ifdef DIAGNOSTIC present = ISSET(HREAD4(hp, SDHC_PRESENT_STATE), SDHC_CMD_INHIBIT_MASK); /* Must not stop the clock if commands are in progress. */ if (present && sdhc_card_detect(hp)) { aprint_normal_dev(hp->sc->sc_dev, "%s: command in progress\n", __func__); } #endif if (hp->sc->sc_vendor_bus_clock) { error = (*hp->sc->sc_vendor_bus_clock)(hp->sc, freq); if (error != 0) goto out; } /* * Stop SD clock before changing the frequency. */ if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { HCLR4(hp, SDHC_VEND_SPEC, SDHC_VEND_SPEC_CARD_CLK_SOFT_EN | SDHC_VEND_SPEC_FRC_SDCLK_ON); if (freq == SDMMC_SDCLK_OFF) { goto out; } } else if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) { HCLR4(hp, SDHC_CLOCK_CTL, 0xfff8); if (freq == SDMMC_SDCLK_OFF) { HSET4(hp, SDHC_CLOCK_CTL, 0x80f0); goto out; } } else { HCLR2(hp, SDHC_CLOCK_CTL, SDHC_SDCLK_ENABLE); if (freq == SDMMC_SDCLK_OFF) goto out; } if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { if (ddr) HSET4(hp, SDHC_MIX_CTRL, SDHC_USDHC_DDR_EN); else HCLR4(hp, SDHC_MIX_CTRL, SDHC_USDHC_DDR_EN); } else if (hp->specver >= SDHC_SPEC_VERS_300) { HCLR2(hp, SDHC_HOST_CTL2, SDHC_UHS_MODE_SELECT_MASK); if (freq > 100000) { HSET2(hp, SDHC_HOST_CTL2, SDHC_UHS_MODE_SELECT_SDR104); } else if (freq > 50000) { if (ddr) { HSET2(hp, SDHC_HOST_CTL2, SDHC_UHS_MODE_SELECT_DDR50); } else { HSET2(hp, SDHC_HOST_CTL2, SDHC_UHS_MODE_SELECT_SDR50); } } else if (freq > 25000) { if (ddr) { HSET2(hp, SDHC_HOST_CTL2, SDHC_UHS_MODE_SELECT_DDR50); } else { HSET2(hp, SDHC_HOST_CTL2, SDHC_UHS_MODE_SELECT_SDR25); } } else if (freq > 400) { HSET2(hp, SDHC_HOST_CTL2, SDHC_UHS_MODE_SELECT_SDR12); } } /* * Slow down Ricoh 5U823 controller that isn't reliable * at 100MHz bus clock. */ if (ISSET(hp->sc->sc_flags, SDHC_FLAG_SLOW_SDR50)) { if (freq == 100000) --freq; } /* * Set the minimum base clock frequency divisor. */ if (!sdhc_clock_divisor(hp, freq, &div)) { /* Invalid base clock frequency or `freq' value. */ aprint_error_dev(hp->sc->sc_dev, "Invalid bus clock %d kHz\n", freq); error = EINVAL; goto out; } if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { if (ddr) { /* in ddr mode, divisor >>= 1 */ div = ((div >> 1) & (SDHC_SDCLK_DIV_MASK << SDHC_SDCLK_DIV_SHIFT)) | (div & (SDHC_SDCLK_DVS_MASK << SDHC_SDCLK_DVS_SHIFT)); } for (timo = 1000; timo > 0; timo--) { if (ISSET(HREAD4(hp, SDHC_PRESENT_STATE), SDHC_SDSTB)) break; sdmmc_delay(10); } HWRITE4(hp, SDHC_CLOCK_CTL, div | (SDHC_TIMEOUT_MAX << 16) | 0x0f); } else if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) { HWRITE4(hp, SDHC_CLOCK_CTL, div | (SDHC_TIMEOUT_MAX << 16)); } else { reg = HREAD2(hp, SDHC_CLOCK_CTL); reg &= (SDHC_INTCLK_STABLE | SDHC_INTCLK_ENABLE); HWRITE2(hp, SDHC_CLOCK_CTL, reg | div); } /* * Start internal clock. Wait 10ms for stabilization. */ if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { HSET4(hp, SDHC_VEND_SPEC, SDHC_VEND_SPEC_CARD_CLK_SOFT_EN | SDHC_VEND_SPEC_FRC_SDCLK_ON); } else if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) { sdmmc_delay(10000); HSET4(hp, SDHC_CLOCK_CTL, 8 | SDHC_INTCLK_ENABLE | SDHC_INTCLK_STABLE); } else { HSET2(hp, SDHC_CLOCK_CTL, SDHC_INTCLK_ENABLE); for (timo = 1000; timo > 0; timo--) { if (ISSET(HREAD2(hp, SDHC_CLOCK_CTL), SDHC_INTCLK_STABLE)) break; sdmmc_delay(10); } if (timo == 0) { error = ETIMEDOUT; DPRINTF(1,("%s: timeout\n", __func__)); goto out; } } if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { HSET1(hp, SDHC_SOFTWARE_RESET, SDHC_INIT_ACTIVE); /* * Sending 80 clocks at 400kHz takes 200us. * So delay for that time + slop and then * check a few times for completion. */ sdmmc_delay(210); for (timo = 10; timo > 0; timo--) { if (!ISSET(HREAD1(hp, SDHC_SOFTWARE_RESET), SDHC_INIT_ACTIVE)) break; sdmmc_delay(10); } DPRINTF(2,("%s: %u init spins\n", __func__, 10 - timo)); /* * Enable SD clock. */ if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { HSET4(hp, SDHC_VEND_SPEC, SDHC_VEND_SPEC_CARD_CLK_SOFT_EN | SDHC_VEND_SPEC_FRC_SDCLK_ON); } else { HSET4(hp, SDHC_CLOCK_CTL, SDHC_SDCLK_ENABLE); } } else { /* * Enable SD clock. */ HSET2(hp, SDHC_CLOCK_CTL, SDHC_SDCLK_ENABLE); if (freq > 25000 && !ISSET(hp->sc->sc_flags, SDHC_FLAG_NO_HS_BIT)) HSET1(hp, SDHC_HOST_CTL, SDHC_HIGH_SPEED); else HCLR1(hp, SDHC_HOST_CTL, SDHC_HIGH_SPEED); } out: mutex_exit(&hp->intr_lock); return error; } static int sdhc_bus_width(sdmmc_chipset_handle_t sch, int width) { struct sdhc_host *hp = (struct sdhc_host *)sch; int reg; switch (width) { case 1: case 4: break; case 8: if (ISSET(hp->sc->sc_flags, SDHC_FLAG_8BIT_MODE)) break; /* FALLTHROUGH */ default: DPRINTF(0,("%s: unsupported bus width (%d)\n", HDEVNAME(hp), width)); return 1; } if (hp->sc->sc_vendor_bus_width) { const int error = hp->sc->sc_vendor_bus_width(hp->sc, width); if (error != 0) return error; } mutex_enter(&hp->intr_lock); reg = HREAD1(hp, SDHC_HOST_CTL); if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { reg &= ~(SDHC_4BIT_MODE|SDHC_ESDHC_8BIT_MODE); if (width == 4) reg |= SDHC_4BIT_MODE; else if (width == 8) reg |= SDHC_ESDHC_8BIT_MODE; } else { reg &= ~SDHC_4BIT_MODE; if (hp->specver >= SDHC_SPEC_VERS_300) { reg &= ~SDHC_8BIT_MODE; } if (width == 4) { reg |= SDHC_4BIT_MODE; } else if (width == 8 && hp->specver >= SDHC_SPEC_VERS_300) { reg |= SDHC_8BIT_MODE; } } HWRITE1(hp, SDHC_HOST_CTL, reg); mutex_exit(&hp->intr_lock); return 0; } static int sdhc_bus_rod(sdmmc_chipset_handle_t sch, int on) { struct sdhc_host *hp = (struct sdhc_host *)sch; if (hp->sc->sc_vendor_rod) return (*hp->sc->sc_vendor_rod)(hp->sc, on); return 0; } static void sdhc_card_enable_intr(sdmmc_chipset_handle_t sch, int enable) { struct sdhc_host *hp = (struct sdhc_host *)sch; if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { mutex_enter(&hp->intr_lock); if (enable) { HSET2(hp, SDHC_NINTR_STATUS_EN, SDHC_CARD_INTERRUPT); HSET2(hp, SDHC_NINTR_SIGNAL_EN, SDHC_CARD_INTERRUPT); } else { HCLR2(hp, SDHC_NINTR_SIGNAL_EN, SDHC_CARD_INTERRUPT); HCLR2(hp, SDHC_NINTR_STATUS_EN, SDHC_CARD_INTERRUPT); } mutex_exit(&hp->intr_lock); } } static void sdhc_card_intr_ack(sdmmc_chipset_handle_t sch) { struct sdhc_host *hp = (struct sdhc_host *)sch; if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { mutex_enter(&hp->intr_lock); HSET2(hp, SDHC_NINTR_STATUS_EN, SDHC_CARD_INTERRUPT); mutex_exit(&hp->intr_lock); } } static int sdhc_signal_voltage(sdmmc_chipset_handle_t sch, int signal_voltage) { struct sdhc_host *hp = (struct sdhc_host *)sch; int error = 0; if (hp->specver < SDHC_SPEC_VERS_300) return EINVAL; mutex_enter(&hp->intr_lock); switch (signal_voltage) { case SDMMC_SIGNAL_VOLTAGE_180: if (hp->sc->sc_vendor_signal_voltage != NULL) { error = hp->sc->sc_vendor_signal_voltage(hp->sc, signal_voltage); if (error != 0) break; } if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) HSET2(hp, SDHC_HOST_CTL2, SDHC_1_8V_SIGNAL_EN); break; case SDMMC_SIGNAL_VOLTAGE_330: if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) HCLR2(hp, SDHC_HOST_CTL2, SDHC_1_8V_SIGNAL_EN); if (hp->sc->sc_vendor_signal_voltage != NULL) { error = hp->sc->sc_vendor_signal_voltage(hp->sc, signal_voltage); if (error != 0) break; } break; default: error = EINVAL; break; } mutex_exit(&hp->intr_lock); return error; } /* * Sampling clock tuning procedure (UHS) */ static int sdhc_execute_tuning1(struct sdhc_host *hp, int timing) { struct sdmmc_command cmd; uint8_t hostctl; int opcode, error, retry = 40; KASSERT(mutex_owned(&hp->intr_lock)); hp->tuning_timing = timing; switch (timing) { case SDMMC_TIMING_MMC_HS200: opcode = MMC_SEND_TUNING_BLOCK_HS200; break; case SDMMC_TIMING_UHS_SDR50: if (!ISSET(hp->sc->sc_caps2, SDHC_TUNING_SDR50)) return 0; /* FALLTHROUGH */ case SDMMC_TIMING_UHS_SDR104: opcode = MMC_SEND_TUNING_BLOCK; break; default: return EINVAL; } hostctl = HREAD1(hp, SDHC_HOST_CTL); /* enable buffer read ready interrupt */ HSET2(hp, SDHC_NINTR_SIGNAL_EN, SDHC_BUFFER_READ_READY); HSET2(hp, SDHC_NINTR_STATUS_EN, SDHC_BUFFER_READ_READY); /* disable DMA */ HCLR1(hp, SDHC_HOST_CTL, SDHC_DMA_SELECT); /* reset tuning circuit */ HCLR2(hp, SDHC_HOST_CTL2, SDHC_SAMPLING_CLOCK_SEL); /* start of tuning */ HWRITE2(hp, SDHC_HOST_CTL2, SDHC_EXECUTE_TUNING); do { memset(&cmd, 0, sizeof(cmd)); cmd.c_opcode = opcode; cmd.c_arg = 0; cmd.c_flags = SCF_CMD_ADTC | SCF_CMD_READ | SCF_RSP_R1; if (ISSET(hostctl, SDHC_8BIT_MODE)) { cmd.c_blklen = cmd.c_datalen = 128; } else { cmd.c_blklen = cmd.c_datalen = 64; } error = sdhc_start_command(hp, &cmd); if (error) break; if (!sdhc_wait_intr(hp, SDHC_BUFFER_READ_READY, SDHC_TUNING_TIMEOUT, false)) { break; } delay(1000); } while (HREAD2(hp, SDHC_HOST_CTL2) & SDHC_EXECUTE_TUNING && --retry); /* disable buffer read ready interrupt */ HCLR2(hp, SDHC_NINTR_SIGNAL_EN, SDHC_BUFFER_READ_READY); HCLR2(hp, SDHC_NINTR_STATUS_EN, SDHC_BUFFER_READ_READY); if (HREAD2(hp, SDHC_HOST_CTL2) & SDHC_EXECUTE_TUNING) { HCLR2(hp, SDHC_HOST_CTL2, SDHC_SAMPLING_CLOCK_SEL|SDHC_EXECUTE_TUNING); sdhc_soft_reset(hp, SDHC_RESET_DAT|SDHC_RESET_CMD); aprint_error_dev(hp->sc->sc_dev, "tuning did not complete, using fixed sampling clock\n"); return EIO; /* tuning did not complete */ } if ((HREAD2(hp, SDHC_HOST_CTL2) & SDHC_SAMPLING_CLOCK_SEL) == 0) { HCLR2(hp, SDHC_HOST_CTL2, SDHC_SAMPLING_CLOCK_SEL|SDHC_EXECUTE_TUNING); sdhc_soft_reset(hp, SDHC_RESET_DAT|SDHC_RESET_CMD); aprint_error_dev(hp->sc->sc_dev, "tuning failed, using fixed sampling clock\n"); return EIO; /* tuning failed */ } if (hp->tuning_timer_count) { callout_schedule(&hp->tuning_timer, hz * hp->tuning_timer_count); } return 0; /* tuning completed */ } static int sdhc_execute_tuning(sdmmc_chipset_handle_t sch, int timing) { struct sdhc_host *hp = (struct sdhc_host *)sch; int error; mutex_enter(&hp->intr_lock); error = sdhc_execute_tuning1(hp, timing); mutex_exit(&hp->intr_lock); return error; } static void sdhc_tuning_timer(void *arg) { struct sdhc_host *hp = arg; atomic_swap_uint(&hp->tuning_timer_pending, 1); } static void sdhc_hw_reset(sdmmc_chipset_handle_t sch) { struct sdhc_host *hp = (struct sdhc_host *)sch; struct sdhc_softc *sc = hp->sc; if (sc->sc_vendor_hw_reset != NULL) sc->sc_vendor_hw_reset(sc, hp); } static int sdhc_wait_state(struct sdhc_host *hp, uint32_t mask, uint32_t value) { uint32_t state; int timeout; for (timeout = 10000; timeout > 0; timeout--) { if (((state = HREAD4(hp, SDHC_PRESENT_STATE)) & mask) == value) return 0; sdmmc_delay(10); } aprint_error_dev(hp->sc->sc_dev, "timeout waiting for mask %#x value %#x (state=%#x)\n", mask, value, state); return ETIMEDOUT; } static void sdhc_exec_command(sdmmc_chipset_handle_t sch, struct sdmmc_command *cmd) { struct sdhc_host *hp = (struct sdhc_host *)sch; int error; bool probing; mutex_enter(&hp->intr_lock); if (atomic_cas_uint(&hp->tuning_timer_pending, 1, 0) == 1) { (void)sdhc_execute_tuning1(hp, hp->tuning_timing); } if (cmd->c_data && ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { const uint16_t ready = SDHC_BUFFER_READ_READY | SDHC_BUFFER_WRITE_READY; if (ISSET(hp->flags, SHF_USE_DMA)) { HCLR2(hp, SDHC_NINTR_SIGNAL_EN, ready); HCLR2(hp, SDHC_NINTR_STATUS_EN, ready); } else { HSET2(hp, SDHC_NINTR_SIGNAL_EN, ready); HSET2(hp, SDHC_NINTR_STATUS_EN, ready); } } if (ISSET(hp->sc->sc_flags, SDHC_FLAG_NO_TIMEOUT)) { const uint16_t eintr = SDHC_CMD_TIMEOUT_ERROR; if (cmd->c_data != NULL) { HCLR2(hp, SDHC_EINTR_SIGNAL_EN, eintr); HCLR2(hp, SDHC_EINTR_STATUS_EN, eintr); } else { HSET2(hp, SDHC_EINTR_SIGNAL_EN, eintr); HSET2(hp, SDHC_EINTR_STATUS_EN, eintr); } } /* * Start the MMC command, or mark `cmd' as failed and return. */ error = sdhc_start_command(hp, cmd); if (error) { cmd->c_error = error; goto out; } /* * Wait until the command phase is done, or until the command * is marked done for any other reason. */ probing = (cmd->c_flags & SCF_TOUT_OK) != 0; if (!sdhc_wait_intr(hp, SDHC_COMMAND_COMPLETE, SDHC_COMMAND_TIMEOUT, probing)) { DPRINTF(1,("%s: timeout for command\n", __func__)); sdmmc_delay(50); cmd->c_error = ETIMEDOUT; goto out; } /* * The host controller removes bits [0:7] from the response * data (CRC) and we pass the data up unchanged to the bus * driver (without padding). */ if (cmd->c_error == 0 && ISSET(cmd->c_flags, SCF_RSP_PRESENT)) { cmd->c_resp[0] = HREAD4(hp, SDHC_RESPONSE + 0); if (ISSET(cmd->c_flags, SCF_RSP_136)) { cmd->c_resp[1] = HREAD4(hp, SDHC_RESPONSE + 4); cmd->c_resp[2] = HREAD4(hp, SDHC_RESPONSE + 8); cmd->c_resp[3] = HREAD4(hp, SDHC_RESPONSE + 12); if (ISSET(hp->sc->sc_flags, SDHC_FLAG_RSP136_CRC)) { cmd->c_resp[0] = (cmd->c_resp[0] >> 8) | (cmd->c_resp[1] << 24); cmd->c_resp[1] = (cmd->c_resp[1] >> 8) | (cmd->c_resp[2] << 24); cmd->c_resp[2] = (cmd->c_resp[2] >> 8) | (cmd->c_resp[3] << 24); cmd->c_resp[3] = (cmd->c_resp[3] >> 8); } } } DPRINTF(1,("%s: resp = %08x\n", HDEVNAME(hp), cmd->c_resp[0])); /* * If the command has data to transfer in any direction, * execute the transfer now. */ if (cmd->c_error == 0 && cmd->c_data != NULL) sdhc_transfer_data(hp, cmd); else if (ISSET(cmd->c_flags, SCF_RSP_BSY)) { if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_NO_BUSY_INTR) && !sdhc_wait_intr(hp, SDHC_TRANSFER_COMPLETE, hz * 10, false)) { DPRINTF(1,("%s: sdhc_exec_command: RSP_BSY\n", HDEVNAME(hp))); cmd->c_error = ETIMEDOUT; goto out; } } out: if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED) && !ISSET(hp->sc->sc_flags, SDHC_FLAG_NO_LED_ON)) { /* Turn off the LED. */ HCLR1(hp, SDHC_HOST_CTL, SDHC_LED_ON); } SET(cmd->c_flags, SCF_ITSDONE); if (ISSET(hp->sc->sc_flags, SDHC_FLAG_NO_AUTO_STOP) && cmd->c_opcode == MMC_STOP_TRANSMISSION) (void)sdhc_soft_reset(hp, SDHC_RESET_CMD|SDHC_RESET_DAT); mutex_exit(&hp->intr_lock); DPRINTF(1,("%s: cmd %d %s (flags=%08x error=%d)\n", HDEVNAME(hp), cmd->c_opcode, (cmd->c_error == 0) ? "done" : "abort", cmd->c_flags, cmd->c_error)); } static int sdhc_start_command(struct sdhc_host *hp, struct sdmmc_command *cmd) { struct sdhc_softc * const sc = hp->sc; uint16_t blksize = 0; uint16_t blkcount = 0; uint16_t mode; uint16_t command; uint32_t pmask; int error; KASSERT(mutex_owned(&hp->intr_lock)); DPRINTF(1,("%s: start cmd %d arg=%08x data=%p dlen=%d flags=%08x, status=%#x\n", HDEVNAME(hp), cmd->c_opcode, cmd->c_arg, cmd->c_data, cmd->c_datalen, cmd->c_flags, HREAD4(hp, SDHC_NINTR_STATUS))); /* * The maximum block length for commands should be the minimum * of the host buffer size and the card buffer size. (1.7.2) */ /* Fragment the data into proper blocks. */ if (cmd->c_datalen > 0) { blksize = MIN(cmd->c_datalen, cmd->c_blklen); blkcount = cmd->c_datalen / blksize; if (cmd->c_datalen % blksize > 0) { /* XXX: Split this command. (1.7.4) */ aprint_error_dev(sc->sc_dev, "data not a multiple of %u bytes\n", blksize); return EINVAL; } } /* Check limit imposed by 9-bit block count. (1.7.2) */ if (blkcount > SDHC_BLOCK_COUNT_MAX) { aprint_error_dev(sc->sc_dev, "too much data\n"); return EINVAL; } /* Prepare transfer mode register value. (2.2.5) */ mode = SDHC_BLOCK_COUNT_ENABLE; if (ISSET(cmd->c_flags, SCF_CMD_READ)) mode |= SDHC_READ_MODE; if (blkcount > 1) { mode |= SDHC_MULTI_BLOCK_MODE; /* XXX only for memory commands? */ if (!ISSET(sc->sc_flags, SDHC_FLAG_NO_AUTO_STOP)) mode |= SDHC_AUTO_CMD12_ENABLE; } if (cmd->c_dmamap != NULL && cmd->c_datalen > 0 && ISSET(hp->flags, SHF_MODE_DMAEN)) { mode |= SDHC_DMA_ENABLE; } /* * Prepare command register value. (2.2.6) */ command = (cmd->c_opcode & SDHC_COMMAND_INDEX_MASK) << SDHC_COMMAND_INDEX_SHIFT; if (ISSET(cmd->c_flags, SCF_RSP_CRC)) command |= SDHC_CRC_CHECK_ENABLE; if (ISSET(cmd->c_flags, SCF_RSP_IDX)) command |= SDHC_INDEX_CHECK_ENABLE; if (cmd->c_datalen > 0) command |= SDHC_DATA_PRESENT_SELECT; if (!ISSET(cmd->c_flags, SCF_RSP_PRESENT)) command |= SDHC_NO_RESPONSE; else if (ISSET(cmd->c_flags, SCF_RSP_136)) command |= SDHC_RESP_LEN_136; else if (ISSET(cmd->c_flags, SCF_RSP_BSY)) command |= SDHC_RESP_LEN_48_CHK_BUSY; else command |= SDHC_RESP_LEN_48; /* Wait until command and optionally data inhibit bits are clear. (1.5) */ pmask = SDHC_CMD_INHIBIT_CMD; if (cmd->c_flags & (SCF_CMD_ADTC|SCF_RSP_BSY)) pmask |= SDHC_CMD_INHIBIT_DAT; error = sdhc_wait_state(hp, pmask, 0); if (error) { (void) sdhc_soft_reset(hp, SDHC_RESET_DAT|SDHC_RESET_CMD); device_printf(sc->sc_dev, "command or data phase inhibited\n"); return error; } DPRINTF(1,("%s: writing cmd: blksize=%d blkcnt=%d mode=%04x cmd=%04x\n", HDEVNAME(hp), blksize, blkcount, mode, command)); if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { blksize |= (MAX(0, PAGE_SHIFT - 12) & SDHC_DMA_BOUNDARY_MASK) << SDHC_DMA_BOUNDARY_SHIFT; /* PAGE_SIZE DMA boundary */ } if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) { /* Alert the user not to remove the card. */ HSET1(hp, SDHC_HOST_CTL, SDHC_LED_ON); } /* Set DMA start address. */ if (ISSET(hp->flags, SHF_USE_ADMA2_MASK) && cmd->c_data != NULL) { for (int seg = 0; seg < cmd->c_dmamap->dm_nsegs; seg++) { bus_addr_t paddr = cmd->c_dmamap->dm_segs[seg].ds_addr; uint16_t len = cmd->c_dmamap->dm_segs[seg].ds_len == 65536 ? 0 : cmd->c_dmamap->dm_segs[seg].ds_len; uint16_t attr = SDHC_ADMA2_VALID | SDHC_ADMA2_ACT_TRANS; if (seg == cmd->c_dmamap->dm_nsegs - 1) { attr |= SDHC_ADMA2_END; } if (ISSET(hp->flags, SHF_USE_ADMA2_32)) { struct sdhc_adma2_descriptor32 *desc = hp->adma2; desc[seg].attribute = htole16(attr); desc[seg].length = htole16(len); desc[seg].address = htole32(paddr); } else { struct sdhc_adma2_descriptor64 *desc = hp->adma2; desc[seg].attribute = htole16(attr); desc[seg].length = htole16(len); desc[seg].address = htole32(paddr & 0xffffffff); desc[seg].address_hi = htole32( (uint64_t)paddr >> 32); } } if (ISSET(hp->flags, SHF_USE_ADMA2_32)) { struct sdhc_adma2_descriptor32 *desc = hp->adma2; desc[cmd->c_dmamap->dm_nsegs].attribute = htole16(0); } else { struct sdhc_adma2_descriptor64 *desc = hp->adma2; desc[cmd->c_dmamap->dm_nsegs].attribute = htole16(0); } bus_dmamap_sync(sc->sc_dmat, hp->adma_map, 0, PAGE_SIZE, BUS_DMASYNC_PREWRITE); if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { HCLR4(hp, SDHC_HOST_CTL, SDHC_USDHC_DMA_SELECT); HSET4(hp, SDHC_HOST_CTL, SDHC_USDHC_DMA_SELECT_ADMA2); } else { HCLR1(hp, SDHC_HOST_CTL, SDHC_DMA_SELECT); HSET1(hp, SDHC_HOST_CTL, SDHC_DMA_SELECT_ADMA2); } const bus_addr_t desc_addr = hp->adma_map->dm_segs[0].ds_addr; HWRITE4(hp, SDHC_ADMA_SYSTEM_ADDR, desc_addr & 0xffffffff); if (ISSET(hp->flags, SHF_USE_ADMA2_64)) { HWRITE4(hp, SDHC_ADMA_SYSTEM_ADDR + 4, (uint64_t)desc_addr >> 32); } } else if (ISSET(mode, SDHC_DMA_ENABLE) && !ISSET(sc->sc_flags, SDHC_FLAG_EXTERNAL_DMA)) { if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { HCLR4(hp, SDHC_HOST_CTL, SDHC_USDHC_DMA_SELECT); } HWRITE4(hp, SDHC_DMA_ADDR, cmd->c_dmamap->dm_segs[0].ds_addr); } /* * Start a CPU data transfer. Writing to the high order byte * of the SDHC_COMMAND register triggers the SD command. (1.5) */ if (ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { HWRITE4(hp, SDHC_BLOCK_SIZE, blksize | (blkcount << 16)); HWRITE4(hp, SDHC_ARGUMENT, cmd->c_arg); if (ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC)) { /* mode bits is in MIX_CTRL register on uSDHC */ HWRITE4(hp, SDHC_MIX_CTRL, mode | (HREAD4(hp, SDHC_MIX_CTRL) & ~(SDHC_MULTI_BLOCK_MODE | SDHC_READ_MODE | SDHC_AUTO_CMD12_ENABLE | SDHC_BLOCK_COUNT_ENABLE | SDHC_DMA_ENABLE))); HWRITE4(hp, SDHC_TRANSFER_MODE, command << 16); } else { HWRITE4(hp, SDHC_TRANSFER_MODE, mode | (command << 16)); } } else { HWRITE2(hp, SDHC_BLOCK_SIZE, blksize); HWRITE2(hp, SDHC_BLOCK_COUNT, blkcount); HWRITE4(hp, SDHC_ARGUMENT, cmd->c_arg); HWRITE2(hp, SDHC_TRANSFER_MODE, mode); HWRITE2(hp, SDHC_COMMAND, command); } return 0; } static void sdhc_transfer_data(struct sdhc_host *hp, struct sdmmc_command *cmd) { struct sdhc_softc *sc = hp->sc; int error; KASSERT(mutex_owned(&hp->intr_lock)); DPRINTF(1,("%s: data transfer: resp=%08x datalen=%u\n", HDEVNAME(hp), MMC_R1(cmd->c_resp), cmd->c_datalen)); #ifdef SDHC_DEBUG /* XXX I forgot why I wanted to know when this happens :-( */ if ((cmd->c_opcode == 52 || cmd->c_opcode == 53) && ISSET(MMC_R1(cmd->c_resp), 0xcb00)) { aprint_error_dev(hp->sc->sc_dev, "CMD52/53 error response flags %#x\n", MMC_R1(cmd->c_resp) & 0xff00); } #endif if (cmd->c_dmamap != NULL) { if (hp->sc->sc_vendor_transfer_data_dma != NULL) { error = hp->sc->sc_vendor_transfer_data_dma(sc, cmd); if (error == 0 && !sdhc_wait_intr(hp, SDHC_TRANSFER_COMPLETE, SDHC_DMA_TIMEOUT, false)) { DPRINTF(1,("%s: timeout\n", __func__)); error = ETIMEDOUT; } } else { error = sdhc_transfer_data_dma(hp, cmd); } } else error = sdhc_transfer_data_pio(hp, cmd); if (error) cmd->c_error = error; SET(cmd->c_flags, SCF_ITSDONE); DPRINTF(1,("%s: data transfer done (error=%d)\n", HDEVNAME(hp), cmd->c_error)); } static int sdhc_transfer_data_dma(struct sdhc_host *hp, struct sdmmc_command *cmd) { bus_dma_segment_t *dm_segs = cmd->c_dmamap->dm_segs; bus_addr_t posaddr; bus_addr_t segaddr; bus_size_t seglen; u_int seg = 0; int error = 0; int status; KASSERT(mutex_owned(&hp->intr_lock)); KASSERT(HREAD2(hp, SDHC_NINTR_STATUS_EN) & SDHC_DMA_INTERRUPT); KASSERT(HREAD2(hp, SDHC_NINTR_SIGNAL_EN) & SDHC_DMA_INTERRUPT); KASSERT(HREAD2(hp, SDHC_NINTR_STATUS_EN) & SDHC_TRANSFER_COMPLETE); KASSERT(HREAD2(hp, SDHC_NINTR_SIGNAL_EN) & SDHC_TRANSFER_COMPLETE); for (;;) { status = sdhc_wait_intr(hp, SDHC_DMA_INTERRUPT|SDHC_TRANSFER_COMPLETE, SDHC_DMA_TIMEOUT, false); if (status & SDHC_TRANSFER_COMPLETE) { break; } if (!status) { DPRINTF(1,("%s: timeout\n", __func__)); error = ETIMEDOUT; break; } if (ISSET(hp->flags, SHF_USE_ADMA2_MASK)) { continue; } if ((status & SDHC_DMA_INTERRUPT) == 0) { continue; } /* DMA Interrupt (boundary crossing) */ segaddr = dm_segs[seg].ds_addr; seglen = dm_segs[seg].ds_len; posaddr = HREAD4(hp, SDHC_DMA_ADDR); if ((seg == (cmd->c_dmamap->dm_nsegs-1)) && (posaddr == (segaddr + seglen))) { continue; } if ((posaddr >= segaddr) && (posaddr < (segaddr + seglen))) HWRITE4(hp, SDHC_DMA_ADDR, posaddr); else if ((posaddr >= segaddr) && (posaddr == (segaddr + seglen)) && (seg + 1) < cmd->c_dmamap->dm_nsegs) HWRITE4(hp, SDHC_DMA_ADDR, dm_segs[++seg].ds_addr); KASSERT(seg < cmd->c_dmamap->dm_nsegs); } if (ISSET(hp->flags, SHF_USE_ADMA2_MASK)) { bus_dmamap_sync(hp->sc->sc_dmat, hp->adma_map, 0, PAGE_SIZE, BUS_DMASYNC_POSTWRITE); } return error; } static int sdhc_transfer_data_pio(struct sdhc_host *hp, struct sdmmc_command *cmd) { uint8_t *data = cmd->c_data; void (*pio_func)(struct sdhc_host *, uint8_t *, u_int); u_int len, datalen; u_int imask; u_int pmask; int error = 0; KASSERT(mutex_owned(&hp->intr_lock)); if (ISSET(cmd->c_flags, SCF_CMD_READ)) { imask = SDHC_BUFFER_READ_READY; pmask = SDHC_BUFFER_READ_ENABLE; if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { pio_func = esdhc_read_data_pio; } else { pio_func = sdhc_read_data_pio; } } else { imask = SDHC_BUFFER_WRITE_READY; pmask = SDHC_BUFFER_WRITE_ENABLE; if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { pio_func = esdhc_write_data_pio; } else { pio_func = sdhc_write_data_pio; } } datalen = cmd->c_datalen; KASSERT(mutex_owned(&hp->intr_lock)); KASSERT(HREAD2(hp, SDHC_NINTR_STATUS_EN) & imask); KASSERT(HREAD2(hp, SDHC_NINTR_STATUS_EN) & SDHC_TRANSFER_COMPLETE); KASSERT(HREAD2(hp, SDHC_NINTR_SIGNAL_EN) & SDHC_TRANSFER_COMPLETE); while (datalen > 0) { if (!ISSET(HREAD4(hp, SDHC_PRESENT_STATE), pmask)) { if (ISSET(hp->sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { HSET4(hp, SDHC_NINTR_SIGNAL_EN, imask); } else { HSET2(hp, SDHC_NINTR_SIGNAL_EN, imask); } if (!sdhc_wait_intr(hp, imask, SDHC_BUFFER_TIMEOUT, false)) { DPRINTF(1,("%s: timeout\n", __func__)); error = ETIMEDOUT; break; } error = sdhc_wait_state(hp, pmask, pmask); if (error) break; } len = MIN(datalen, cmd->c_blklen); (*pio_func)(hp, data, len); DPRINTF(2,("%s: pio data transfer %u @ %p\n", HDEVNAME(hp), len, data)); data += len; datalen -= len; } if (error == 0 && !sdhc_wait_intr(hp, SDHC_TRANSFER_COMPLETE, SDHC_TRANSFER_TIMEOUT, false)) { DPRINTF(1,("%s: timeout for transfer\n", __func__)); error = ETIMEDOUT; } return error; } static void sdhc_read_data_pio(struct sdhc_host *hp, uint8_t *data, u_int datalen) { if (((__uintptr_t)data & 3) == 0) { while (datalen > 3) { *(uint32_t *)data = le32toh(HREAD4(hp, SDHC_DATA)); data += 4; datalen -= 4; } if (datalen > 1) { *(uint16_t *)data = le16toh(HREAD2(hp, SDHC_DATA)); data += 2; datalen -= 2; } if (datalen > 0) { *data = HREAD1(hp, SDHC_DATA); data += 1; datalen -= 1; } } else if (((__uintptr_t)data & 1) == 0) { while (datalen > 1) { *(uint16_t *)data = le16toh(HREAD2(hp, SDHC_DATA)); data += 2; datalen -= 2; } if (datalen > 0) { *data = HREAD1(hp, SDHC_DATA); data += 1; datalen -= 1; } } else { while (datalen > 0) { *data = HREAD1(hp, SDHC_DATA); data += 1; datalen -= 1; } } } static void sdhc_write_data_pio(struct sdhc_host *hp, uint8_t *data, u_int datalen) { if (((__uintptr_t)data & 3) == 0) { while (datalen > 3) { HWRITE4(hp, SDHC_DATA, htole32(*(uint32_t *)data)); data += 4; datalen -= 4; } if (datalen > 1) { HWRITE2(hp, SDHC_DATA, htole16(*(uint16_t *)data)); data += 2; datalen -= 2; } if (datalen > 0) { HWRITE1(hp, SDHC_DATA, *data); data += 1; datalen -= 1; } } else if (((__uintptr_t)data & 1) == 0) { while (datalen > 1) { HWRITE2(hp, SDHC_DATA, htole16(*(uint16_t *)data)); data += 2; datalen -= 2; } if (datalen > 0) { HWRITE1(hp, SDHC_DATA, *data); data += 1; datalen -= 1; } } else { while (datalen > 0) { HWRITE1(hp, SDHC_DATA, *data); data += 1; datalen -= 1; } } } static void esdhc_read_data_pio(struct sdhc_host *hp, uint8_t *data, u_int datalen) { uint16_t status = HREAD2(hp, SDHC_NINTR_STATUS); uint32_t v; const size_t watermark = (HREAD4(hp, SDHC_WATERMARK_LEVEL) >> SDHC_WATERMARK_READ_SHIFT) & SDHC_WATERMARK_READ_MASK; size_t count = 0; while (datalen > 3 && !ISSET(status, SDHC_TRANSFER_COMPLETE)) { if (count == 0) { /* * If we've drained "watermark" words, we need to wait * a little bit so the read FIFO can refill. */ sdmmc_delay(10); count = watermark; } v = HREAD4(hp, SDHC_DATA); v = le32toh(v); *(uint32_t *)data = v; data += 4; datalen -= 4; status = HREAD2(hp, SDHC_NINTR_STATUS); count--; } if (datalen > 0 && !ISSET(status, SDHC_TRANSFER_COMPLETE)) { if (count == 0) { sdmmc_delay(10); } v = HREAD4(hp, SDHC_DATA); v = le32toh(v); do { *data++ = v; v >>= 8; } while (--datalen > 0); } } static void esdhc_write_data_pio(struct sdhc_host *hp, uint8_t *data, u_int datalen) { uint16_t status = HREAD2(hp, SDHC_NINTR_STATUS); uint32_t v; const size_t watermark = (HREAD4(hp, SDHC_WATERMARK_LEVEL) >> SDHC_WATERMARK_WRITE_SHIFT) & SDHC_WATERMARK_WRITE_MASK; size_t count = watermark; while (datalen > 3 && !ISSET(status, SDHC_TRANSFER_COMPLETE)) { if (count == 0) { sdmmc_delay(10); count = watermark; } v = *(uint32_t *)data; v = htole32(v); HWRITE4(hp, SDHC_DATA, v); data += 4; datalen -= 4; status = HREAD2(hp, SDHC_NINTR_STATUS); count--; } if (datalen > 0 && !ISSET(status, SDHC_TRANSFER_COMPLETE)) { if (count == 0) { sdmmc_delay(10); } v = *(uint32_t *)data; v = htole32(v); HWRITE4(hp, SDHC_DATA, v); } } /* Prepare for another command. */ static int sdhc_soft_reset(struct sdhc_host *hp, int mask) { int timo; KASSERT(mutex_owned(&hp->intr_lock)); DPRINTF(1,("%s: software reset reg=%08x\n", HDEVNAME(hp), mask)); /* Request the reset. */ HWRITE1(hp, SDHC_SOFTWARE_RESET, mask); /* * If necessary, wait for the controller to set the bits to * acknowledge the reset. */ if (ISSET(hp->sc->sc_flags, SDHC_FLAG_WAIT_RESET) && ISSET(mask, (SDHC_RESET_DAT | SDHC_RESET_CMD))) { for (timo = 10000; timo > 0; timo--) { if (ISSET(HREAD1(hp, SDHC_SOFTWARE_RESET), mask)) break; /* Short delay because I worry we may miss it... */ sdmmc_delay(1); } if (timo == 0) { DPRINTF(1,("%s: timeout for reset on\n", __func__)); return ETIMEDOUT; } } /* * Wait for the controller to clear the bits to indicate that * the reset has completed. */ for (timo = 10; timo > 0; timo--) { if (!ISSET(HREAD1(hp, SDHC_SOFTWARE_RESET), mask)) break; sdmmc_delay(10000); } if (timo == 0) { DPRINTF(1,("%s: timeout reg=%08x\n", HDEVNAME(hp), HREAD1(hp, SDHC_SOFTWARE_RESET))); return ETIMEDOUT; } if (ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) { HSET4(hp, SDHC_DMA_CTL, SDHC_DMA_SNOOP); } return 0; } static int sdhc_wait_intr(struct sdhc_host *hp, int mask, int timo, bool probing) { int status, error, nointr; KASSERT(mutex_owned(&hp->intr_lock)); mask |= SDHC_ERROR_INTERRUPT; nointr = 0; status = hp->intr_status & mask; while (status == 0) { if (cv_timedwait(&hp->intr_cv, &hp->intr_lock, timo) == EWOULDBLOCK) { nointr = 1; break; } status = hp->intr_status & mask; } error = hp->intr_error_status; DPRINTF(2,("%s: intr status %#x error %#x\n", HDEVNAME(hp), status, error)); hp->intr_status &= ~status; hp->intr_error_status &= ~error; if (ISSET(status, SDHC_ERROR_INTERRUPT)) { if (ISSET(error, SDHC_DMA_ERROR)) device_printf(hp->sc->sc_dev,"dma error\n"); if (ISSET(error, SDHC_ADMA_ERROR)) device_printf(hp->sc->sc_dev,"adma error\n"); if (ISSET(error, SDHC_AUTO_CMD12_ERROR)) device_printf(hp->sc->sc_dev,"auto_cmd12 error\n"); if (ISSET(error, SDHC_CURRENT_LIMIT_ERROR)) device_printf(hp->sc->sc_dev,"current limit error\n"); if (ISSET(error, SDHC_DATA_END_BIT_ERROR)) device_printf(hp->sc->sc_dev,"data end bit error\n"); if (ISSET(error, SDHC_DATA_CRC_ERROR)) device_printf(hp->sc->sc_dev,"data crc error\n"); if (ISSET(error, SDHC_DATA_TIMEOUT_ERROR)) device_printf(hp->sc->sc_dev,"data timeout error\n"); if (ISSET(error, SDHC_CMD_INDEX_ERROR)) device_printf(hp->sc->sc_dev,"cmd index error\n"); if (ISSET(error, SDHC_CMD_END_BIT_ERROR)) device_printf(hp->sc->sc_dev,"cmd end bit error\n"); if (ISSET(error, SDHC_CMD_CRC_ERROR)) device_printf(hp->sc->sc_dev,"cmd crc error\n"); if (ISSET(error, SDHC_CMD_TIMEOUT_ERROR)) { if (!probing) device_printf(hp->sc->sc_dev,"cmd timeout error\n"); #ifdef SDHC_DEBUG else if (sdhcdebug > 0) device_printf(hp->sc->sc_dev,"cmd timeout (expected)\n"); #endif } if ((error & ~SDHC_EINTR_STATUS_MASK) != 0) device_printf(hp->sc->sc_dev,"vendor error %#x\n", (error & ~SDHC_EINTR_STATUS_MASK)); if (error == 0) device_printf(hp->sc->sc_dev,"no error\n"); /* Command timeout has higher priority than command complete. */ if (ISSET(error, SDHC_CMD_TIMEOUT_ERROR)) CLR(status, SDHC_COMMAND_COMPLETE); /* Transfer complete has higher priority than data timeout. */ if (ISSET(status, SDHC_TRANSFER_COMPLETE)) CLR(error, SDHC_DATA_TIMEOUT_ERROR); } if (nointr || (ISSET(status, SDHC_ERROR_INTERRUPT) && error)) { if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) (void)sdhc_soft_reset(hp, SDHC_RESET_CMD|SDHC_RESET_DAT); hp->intr_error_status = 0; status = 0; } return status; } /* * Established by attachment driver at interrupt priority IPL_SDMMC. */ int sdhc_intr(void *arg) { struct sdhc_softc *sc = (struct sdhc_softc *)arg; struct sdhc_host *hp; int done = 0; uint16_t status; uint16_t error; /* We got an interrupt, but we don't know from which slot. */ for (size_t host = 0; host < sc->sc_nhosts; host++) { hp = sc->sc_host[host]; if (hp == NULL) continue; mutex_enter(&hp->intr_lock); if (ISSET(sc->sc_flags, SDHC_FLAG_32BIT_ACCESS)) { /* Find out which interrupts are pending. */ uint32_t xstatus = HREAD4(hp, SDHC_NINTR_STATUS); status = xstatus; error = xstatus >> 16; if (ISSET(sc->sc_flags, SDHC_FLAG_USDHC) && (xstatus & SDHC_TRANSFER_COMPLETE) && !(xstatus & SDHC_DMA_INTERRUPT)) { /* read again due to uSDHC errata */ status = xstatus = HREAD4(hp, SDHC_NINTR_STATUS); error = xstatus >> 16; } if (ISSET(sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { if ((error & SDHC_NINTR_STATUS_MASK) != 0) SET(status, SDHC_ERROR_INTERRUPT); } if (error) xstatus |= SDHC_ERROR_INTERRUPT; else if (!ISSET(status, SDHC_NINTR_STATUS_MASK)) goto next_port; /* no interrupt for us */ /* Acknowledge the interrupts we are about to handle. */ HWRITE4(hp, SDHC_NINTR_STATUS, xstatus); } else { /* Find out which interrupts are pending. */ error = 0; status = HREAD2(hp, SDHC_NINTR_STATUS); if (!ISSET(status, SDHC_NINTR_STATUS_MASK)) goto next_port; /* no interrupt for us */ /* Acknowledge the interrupts we are about to handle. */ HWRITE2(hp, SDHC_NINTR_STATUS, status); if (ISSET(status, SDHC_ERROR_INTERRUPT)) { /* Acknowledge error interrupts. */ error = HREAD2(hp, SDHC_EINTR_STATUS); HWRITE2(hp, SDHC_EINTR_STATUS, error); } } DPRINTF(2,("%s: interrupt status=%x error=%x\n", HDEVNAME(hp), status, error)); /* Claim this interrupt. */ done = 1; if (ISSET(status, SDHC_ERROR_INTERRUPT) && ISSET(error, SDHC_ADMA_ERROR)) { uint8_t adma_err = HREAD1(hp, SDHC_ADMA_ERROR_STATUS); printf("%s: ADMA error, status %02x\n", HDEVNAME(hp), adma_err); } /* * Wake up the sdmmc event thread to scan for cards. */ if (ISSET(status, SDHC_CARD_REMOVAL|SDHC_CARD_INSERTION)) { if (hp->sdmmc != NULL) { sdmmc_needs_discover(hp->sdmmc); } if (ISSET(sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { HCLR4(hp, SDHC_NINTR_STATUS_EN, status & (SDHC_CARD_REMOVAL|SDHC_CARD_INSERTION)); HCLR4(hp, SDHC_NINTR_SIGNAL_EN, status & (SDHC_CARD_REMOVAL|SDHC_CARD_INSERTION)); } } /* * Schedule re-tuning process (UHS). */ if (ISSET(status, SDHC_RETUNING_EVENT)) { atomic_swap_uint(&hp->tuning_timer_pending, 1); } /* * Wake up the blocking process to service command * related interrupt(s). */ if (ISSET(status, SDHC_COMMAND_COMPLETE|SDHC_ERROR_INTERRUPT| SDHC_BUFFER_READ_READY|SDHC_BUFFER_WRITE_READY| SDHC_TRANSFER_COMPLETE|SDHC_DMA_INTERRUPT)) { hp->intr_error_status |= error; hp->intr_status |= status; if (ISSET(sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC)) { HCLR4(hp, SDHC_NINTR_SIGNAL_EN, status & (SDHC_BUFFER_READ_READY|SDHC_BUFFER_WRITE_READY)); } cv_broadcast(&hp->intr_cv); } /* * Service SD card interrupts. */ if (!ISSET(sc->sc_flags, SDHC_FLAG_ENHANCED | SDHC_FLAG_USDHC) && ISSET(status, SDHC_CARD_INTERRUPT)) { DPRINTF(0,("%s: card interrupt\n", HDEVNAME(hp))); HCLR2(hp, SDHC_NINTR_STATUS_EN, SDHC_CARD_INTERRUPT); sdmmc_card_intr(hp->sdmmc); } next_port: mutex_exit(&hp->intr_lock); } return done; } kmutex_t * sdhc_host_lock(struct sdhc_host *hp) { return &hp->intr_lock; } uint8_t sdhc_host_read_1(struct sdhc_host *hp, int reg) { return HREAD1(hp, reg); } uint16_t sdhc_host_read_2(struct sdhc_host *hp, int reg) { return HREAD2(hp, reg); } uint32_t sdhc_host_read_4(struct sdhc_host *hp, int reg) { return HREAD4(hp, reg); } void sdhc_host_write_1(struct sdhc_host *hp, int reg, uint8_t val) { HWRITE1(hp, reg, val); } void sdhc_host_write_2(struct sdhc_host *hp, int reg, uint16_t val) { HWRITE2(hp, reg, val); } void sdhc_host_write_4(struct sdhc_host *hp, int reg, uint32_t val) { HWRITE4(hp, reg, val); } #ifdef SDHC_DEBUG void sdhc_dump_regs(struct sdhc_host *hp) { printf("0x%02x PRESENT_STATE: %x\n", SDHC_PRESENT_STATE, HREAD4(hp, SDHC_PRESENT_STATE)); if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_ENHANCED)) printf("0x%02x POWER_CTL: %x\n", SDHC_POWER_CTL, HREAD1(hp, SDHC_POWER_CTL)); printf("0x%02x NINTR_STATUS: %x\n", SDHC_NINTR_STATUS, HREAD2(hp, SDHC_NINTR_STATUS)); printf("0x%02x EINTR_STATUS: %x\n", SDHC_EINTR_STATUS, HREAD2(hp, SDHC_EINTR_STATUS)); printf("0x%02x NINTR_STATUS_EN: %x\n", SDHC_NINTR_STATUS_EN, HREAD2(hp, SDHC_NINTR_STATUS_EN)); printf("0x%02x EINTR_STATUS_EN: %x\n", SDHC_EINTR_STATUS_EN, HREAD2(hp, SDHC_EINTR_STATUS_EN)); printf("0x%02x NINTR_SIGNAL_EN: %x\n", SDHC_NINTR_SIGNAL_EN, HREAD2(hp, SDHC_NINTR_SIGNAL_EN)); printf("0x%02x EINTR_SIGNAL_EN: %x\n", SDHC_EINTR_SIGNAL_EN, HREAD2(hp, SDHC_EINTR_SIGNAL_EN)); printf("0x%02x CAPABILITIES: %x\n", SDHC_CAPABILITIES, HREAD4(hp, SDHC_CAPABILITIES)); printf("0x%02x MAX_CAPABILITIES: %x\n", SDHC_MAX_CAPABILITIES, HREAD4(hp, SDHC_MAX_CAPABILITIES)); } #endif