/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2018 Emmanuel Vadot * Copyright (c) 2013 Alexander Fedorov * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "opt_mmccam.h" #ifdef MMCCAM #include #include #include #include #include #include #include "mmc_sim_if.h" #endif #include "mmc_pwrseq_if.h" #define AW_MMC_MEMRES 0 #define AW_MMC_IRQRES 1 #define AW_MMC_RESSZ 2 #define AW_MMC_DMA_SEGS (PAGE_SIZE / sizeof(struct aw_mmc_dma_desc)) #define AW_MMC_DMA_DESC_SIZE (sizeof(struct aw_mmc_dma_desc) * AW_MMC_DMA_SEGS) #define AW_MMC_DMA_FTRGLEVEL 0x20070008 #define AW_MMC_RESET_RETRY 1000 #define CARD_ID_FREQUENCY 400000 struct aw_mmc_conf { uint32_t dma_xferlen; bool mask_data0; bool can_calibrate; bool new_timing; }; static const struct aw_mmc_conf a10_mmc_conf = { .dma_xferlen = 0x2000, }; static const struct aw_mmc_conf a13_mmc_conf = { .dma_xferlen = 0x10000, }; static const struct aw_mmc_conf a64_mmc_conf = { .dma_xferlen = 0x10000, .mask_data0 = true, .can_calibrate = true, .new_timing = true, }; static const struct aw_mmc_conf a64_emmc_conf = { .dma_xferlen = 0x2000, .can_calibrate = true, }; static struct ofw_compat_data compat_data[] = { {"allwinner,sun4i-a10-mmc", (uintptr_t)&a10_mmc_conf}, {"allwinner,sun5i-a13-mmc", (uintptr_t)&a13_mmc_conf}, {"allwinner,sun7i-a20-mmc", (uintptr_t)&a13_mmc_conf}, {"allwinner,sun50i-a64-mmc", (uintptr_t)&a64_mmc_conf}, {"allwinner,sun50i-a64-emmc", (uintptr_t)&a64_emmc_conf}, {NULL, 0} }; struct aw_mmc_softc { device_t aw_dev; clk_t aw_clk_ahb; clk_t aw_clk_mmc; hwreset_t aw_rst_ahb; int aw_bus_busy; int aw_resid; int aw_timeout; struct callout aw_timeoutc; struct mmc_host aw_host; struct mmc_helper mmc_helper; #ifdef MMCCAM union ccb * ccb; struct mmc_sim mmc_sim; #else struct mmc_request * aw_req; #endif struct mtx aw_mtx; struct resource * aw_res[AW_MMC_RESSZ]; struct aw_mmc_conf * aw_mmc_conf; uint32_t aw_intr; uint32_t aw_intr_wait; void * aw_intrhand; unsigned int aw_clock; device_t child; /* Fields required for DMA access. */ bus_addr_t aw_dma_desc_phys; bus_dmamap_t aw_dma_map; bus_dma_tag_t aw_dma_tag; void * aw_dma_desc; bus_dmamap_t aw_dma_buf_map; bus_dma_tag_t aw_dma_buf_tag; int aw_dma_map_err; }; static struct resource_spec aw_mmc_res_spec[] = { { SYS_RES_MEMORY, 0, RF_ACTIVE }, { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, { -1, 0, 0 } }; static int aw_mmc_probe(device_t); static int aw_mmc_attach(device_t); static int aw_mmc_detach(device_t); static int aw_mmc_setup_dma(struct aw_mmc_softc *); static void aw_mmc_teardown_dma(struct aw_mmc_softc *sc); static int aw_mmc_reset(struct aw_mmc_softc *); static int aw_mmc_init(struct aw_mmc_softc *); static void aw_mmc_intr(void *); static int aw_mmc_update_clock(struct aw_mmc_softc *, uint32_t); static void aw_mmc_helper_cd_handler(device_t, bool); static void aw_mmc_print_error(uint32_t); static int aw_mmc_update_ios(device_t, device_t); static int aw_mmc_request(device_t, device_t, struct mmc_request *); #ifndef MMCCAM static int aw_mmc_get_ro(device_t, device_t); static int aw_mmc_acquire_host(device_t, device_t); static int aw_mmc_release_host(device_t, device_t); #endif #define AW_MMC_LOCK(_sc) mtx_lock(&(_sc)->aw_mtx) #define AW_MMC_UNLOCK(_sc) mtx_unlock(&(_sc)->aw_mtx) #define AW_MMC_READ_4(_sc, _reg) \ bus_read_4((_sc)->aw_res[AW_MMC_MEMRES], _reg) #define AW_MMC_WRITE_4(_sc, _reg, _value) \ bus_write_4((_sc)->aw_res[AW_MMC_MEMRES], _reg, _value) SYSCTL_NODE(_hw, OID_AUTO, aw_mmc, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "aw_mmc driver"); static int aw_mmc_debug = 0; SYSCTL_INT(_hw_aw_mmc, OID_AUTO, debug, CTLFLAG_RWTUN, &aw_mmc_debug, 0, "Debug level bit0=card changes bit1=ios changes, bit2=interrupts, bit3=commands"); #define AW_MMC_DEBUG_CARD 0x1 #define AW_MMC_DEBUG_IOS 0x2 #define AW_MMC_DEBUG_INT 0x4 #define AW_MMC_DEBUG_CMD 0x8 #ifdef MMCCAM static int aw_mmc_get_tran_settings(device_t dev, struct ccb_trans_settings_mmc *cts) { struct aw_mmc_softc *sc; sc = device_get_softc(dev); cts->host_ocr = sc->aw_host.host_ocr; cts->host_f_min = sc->aw_host.f_min; cts->host_f_max = sc->aw_host.f_max; cts->host_caps = sc->aw_host.caps; cts->host_max_data = (sc->aw_mmc_conf->dma_xferlen * AW_MMC_DMA_SEGS) / MMC_SECTOR_SIZE; memcpy(&cts->ios, &sc->aw_host.ios, sizeof(struct mmc_ios)); return (0); } static int aw_mmc_set_tran_settings(device_t dev, struct ccb_trans_settings_mmc *cts) { struct aw_mmc_softc *sc; struct mmc_ios *ios; struct mmc_ios *new_ios; sc = device_get_softc(dev); ios = &sc->aw_host.ios; new_ios = &cts->ios; /* Update only requested fields */ if (cts->ios_valid & MMC_CLK) { ios->clock = new_ios->clock; if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS)) device_printf(sc->aw_dev, "Clock => %d\n", ios->clock); } if (cts->ios_valid & MMC_VDD) { ios->vdd = new_ios->vdd; if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS)) device_printf(sc->aw_dev, "VDD => %d\n", ios->vdd); } if (cts->ios_valid & MMC_CS) { ios->chip_select = new_ios->chip_select; if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS)) device_printf(sc->aw_dev, "CS => %d\n", ios->chip_select); } if (cts->ios_valid & MMC_BW) { ios->bus_width = new_ios->bus_width; if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS)) device_printf(sc->aw_dev, "Bus width => %d\n", ios->bus_width); } if (cts->ios_valid & MMC_PM) { ios->power_mode = new_ios->power_mode; if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS)) device_printf(sc->aw_dev, "Power mode => %d\n", ios->power_mode); } if (cts->ios_valid & MMC_BT) { ios->timing = new_ios->timing; if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS)) device_printf(sc->aw_dev, "Timing => %d\n", ios->timing); } if (cts->ios_valid & MMC_BM) { ios->bus_mode = new_ios->bus_mode; if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS)) device_printf(sc->aw_dev, "Bus mode => %d\n", ios->bus_mode); } return (aw_mmc_update_ios(sc->aw_dev, NULL)); } static int aw_mmc_cam_request(device_t dev, union ccb *ccb) { struct aw_mmc_softc *sc; struct ccb_mmcio *mmcio; sc = device_get_softc(dev); mmcio = &ccb->mmcio; AW_MMC_LOCK(sc); if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CMD)) { device_printf(sc->aw_dev, "CMD%u arg %#x flags %#x dlen %u dflags %#x\n", mmcio->cmd.opcode, mmcio->cmd.arg, mmcio->cmd.flags, mmcio->cmd.data != NULL ? (unsigned int) mmcio->cmd.data->len : 0, mmcio->cmd.data != NULL ? mmcio->cmd.data->flags: 0); } if (mmcio->cmd.data != NULL) { if (mmcio->cmd.data->len == 0 || mmcio->cmd.data->flags == 0) panic("data->len = %d, data->flags = %d -- something is b0rked", (int)mmcio->cmd.data->len, mmcio->cmd.data->flags); } if (sc->ccb != NULL) { device_printf(sc->aw_dev, "Controller still has an active command\n"); return (EBUSY); } sc->ccb = ccb; /* aw_mmc_request locks again */ AW_MMC_UNLOCK(sc); aw_mmc_request(sc->aw_dev, NULL, NULL); return (0); } #endif /* MMCCAM */ static void aw_mmc_helper_cd_handler(device_t dev, bool present) { struct aw_mmc_softc *sc; sc = device_get_softc(dev); #ifdef MMCCAM mmc_cam_sim_discover(&sc->mmc_sim); #else AW_MMC_LOCK(sc); if (present) { if (sc->child == NULL) { if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD)) device_printf(sc->aw_dev, "Card inserted\n"); sc->child = device_add_child(sc->aw_dev, "mmc", -1); AW_MMC_UNLOCK(sc); if (sc->child) { device_set_ivars(sc->child, sc); (void)device_probe_and_attach(sc->child); } } else AW_MMC_UNLOCK(sc); } else { /* Card isn't present, detach if necessary */ if (sc->child != NULL) { if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD)) device_printf(sc->aw_dev, "Card removed\n"); AW_MMC_UNLOCK(sc); device_delete_child(sc->aw_dev, sc->child); sc->child = NULL; } else AW_MMC_UNLOCK(sc); } #endif /* MMCCAM */ } static int aw_mmc_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) return (ENXIO); device_set_desc(dev, "Allwinner Integrated MMC/SD controller"); return (BUS_PROBE_DEFAULT); } static int aw_mmc_attach(device_t dev) { struct aw_mmc_softc *sc; struct sysctl_ctx_list *ctx; struct sysctl_oid_list *tree; int error; sc = device_get_softc(dev); sc->aw_dev = dev; sc->aw_mmc_conf = (struct aw_mmc_conf *)ofw_bus_search_compatible(dev, compat_data)->ocd_data; #ifndef MMCCAM sc->aw_req = NULL; #endif if (bus_alloc_resources(dev, aw_mmc_res_spec, sc->aw_res) != 0) { device_printf(dev, "cannot allocate device resources\n"); return (ENXIO); } if (bus_setup_intr(dev, sc->aw_res[AW_MMC_IRQRES], INTR_TYPE_NET | INTR_MPSAFE, NULL, aw_mmc_intr, sc, &sc->aw_intrhand)) { bus_release_resources(dev, aw_mmc_res_spec, sc->aw_res); device_printf(dev, "cannot setup interrupt handler\n"); return (ENXIO); } mtx_init(&sc->aw_mtx, device_get_nameunit(sc->aw_dev), "aw_mmc", MTX_DEF); callout_init_mtx(&sc->aw_timeoutc, &sc->aw_mtx, 0); /* De-assert reset */ if (hwreset_get_by_ofw_name(dev, 0, "ahb", &sc->aw_rst_ahb) == 0) { error = hwreset_deassert(sc->aw_rst_ahb); if (error != 0) { device_printf(dev, "cannot de-assert reset\n"); goto fail; } } /* Activate the module clock. */ error = clk_get_by_ofw_name(dev, 0, "ahb", &sc->aw_clk_ahb); if (error != 0) { device_printf(dev, "cannot get ahb clock\n"); goto fail; } error = clk_enable(sc->aw_clk_ahb); if (error != 0) { device_printf(dev, "cannot enable ahb clock\n"); goto fail; } error = clk_get_by_ofw_name(dev, 0, "mmc", &sc->aw_clk_mmc); if (error != 0) { device_printf(dev, "cannot get mmc clock\n"); goto fail; } error = clk_set_freq(sc->aw_clk_mmc, CARD_ID_FREQUENCY, CLK_SET_ROUND_DOWN); if (error != 0) { device_printf(dev, "cannot init mmc clock\n"); goto fail; } error = clk_enable(sc->aw_clk_mmc); if (error != 0) { device_printf(dev, "cannot enable mmc clock\n"); goto fail; } sc->aw_timeout = 10; ctx = device_get_sysctl_ctx(dev); tree = SYSCTL_CHILDREN(device_get_sysctl_tree(dev)); SYSCTL_ADD_INT(ctx, tree, OID_AUTO, "req_timeout", CTLFLAG_RW, &sc->aw_timeout, 0, "Request timeout in seconds"); /* Soft Reset controller. */ if (aw_mmc_reset(sc) != 0) { device_printf(dev, "cannot reset the controller\n"); goto fail; } if (aw_mmc_setup_dma(sc) != 0) { device_printf(sc->aw_dev, "Couldn't setup DMA!\n"); goto fail; } /* Set some defaults for freq and supported mode */ sc->aw_host.f_min = 400000; sc->aw_host.f_max = 52000000; sc->aw_host.host_ocr = MMC_OCR_320_330 | MMC_OCR_330_340; sc->aw_host.caps |= MMC_CAP_HSPEED | MMC_CAP_SIGNALING_330; mmc_fdt_parse(dev, 0, &sc->mmc_helper, &sc->aw_host); mmc_fdt_gpio_setup(dev, 0, &sc->mmc_helper, aw_mmc_helper_cd_handler); #ifdef MMCCAM sc->ccb = NULL; if (mmc_cam_sim_alloc(dev, "aw_mmc", &sc->mmc_sim) != 0) { device_printf(dev, "cannot alloc cam sim\n"); goto fail; } #endif /* MMCCAM */ return (0); fail: callout_drain(&sc->aw_timeoutc); mtx_destroy(&sc->aw_mtx); bus_teardown_intr(dev, sc->aw_res[AW_MMC_IRQRES], sc->aw_intrhand); bus_release_resources(dev, aw_mmc_res_spec, sc->aw_res); return (ENXIO); } static int aw_mmc_detach(device_t dev) { struct aw_mmc_softc *sc; device_t d; sc = device_get_softc(dev); clk_disable(sc->aw_clk_mmc); clk_disable(sc->aw_clk_ahb); hwreset_assert(sc->aw_rst_ahb); mmc_fdt_gpio_teardown(&sc->mmc_helper); callout_drain(&sc->aw_timeoutc); AW_MMC_LOCK(sc); d = sc->child; sc->child = NULL; AW_MMC_UNLOCK(sc); if (d != NULL) device_delete_child(sc->aw_dev, d); aw_mmc_teardown_dma(sc); mtx_destroy(&sc->aw_mtx); bus_teardown_intr(dev, sc->aw_res[AW_MMC_IRQRES], sc->aw_intrhand); bus_release_resources(dev, aw_mmc_res_spec, sc->aw_res); #ifdef MMCCAM mmc_cam_sim_free(&sc->mmc_sim); #endif return (0); } static void aw_dma_desc_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int err) { struct aw_mmc_softc *sc; sc = (struct aw_mmc_softc *)arg; if (err) { sc->aw_dma_map_err = err; return; } sc->aw_dma_desc_phys = segs[0].ds_addr; } static int aw_mmc_setup_dma(struct aw_mmc_softc *sc) { int error; /* Allocate the DMA descriptor memory. */ error = bus_dma_tag_create( bus_get_dma_tag(sc->aw_dev), /* parent */ AW_MMC_DMA_ALIGN, 0, /* align, boundary */ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg*/ AW_MMC_DMA_DESC_SIZE, 1, /* maxsize, nsegment */ AW_MMC_DMA_DESC_SIZE, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lock, lockarg*/ &sc->aw_dma_tag); if (error) return (error); error = bus_dmamem_alloc(sc->aw_dma_tag, &sc->aw_dma_desc, BUS_DMA_COHERENT | BUS_DMA_WAITOK | BUS_DMA_ZERO, &sc->aw_dma_map); if (error) return (error); error = bus_dmamap_load(sc->aw_dma_tag, sc->aw_dma_map, sc->aw_dma_desc, AW_MMC_DMA_DESC_SIZE, aw_dma_desc_cb, sc, 0); if (error) return (error); if (sc->aw_dma_map_err) return (sc->aw_dma_map_err); /* Create the DMA map for data transfers. */ error = bus_dma_tag_create( bus_get_dma_tag(sc->aw_dev), /* parent */ AW_MMC_DMA_ALIGN, 0, /* align, boundary */ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg*/ sc->aw_mmc_conf->dma_xferlen * AW_MMC_DMA_SEGS, AW_MMC_DMA_SEGS, /* maxsize, nsegments */ sc->aw_mmc_conf->dma_xferlen, /* maxsegsize */ BUS_DMA_ALLOCNOW, /* flags */ NULL, NULL, /* lock, lockarg*/ &sc->aw_dma_buf_tag); if (error) return (error); error = bus_dmamap_create(sc->aw_dma_buf_tag, 0, &sc->aw_dma_buf_map); if (error) return (error); return (0); } static void aw_mmc_teardown_dma(struct aw_mmc_softc *sc) { bus_dmamap_unload(sc->aw_dma_tag, sc->aw_dma_map); bus_dmamem_free(sc->aw_dma_tag, sc->aw_dma_desc, sc->aw_dma_map); if (bus_dma_tag_destroy(sc->aw_dma_tag) != 0) device_printf(sc->aw_dev, "Cannot destroy the dma tag\n"); bus_dmamap_unload(sc->aw_dma_buf_tag, sc->aw_dma_buf_map); bus_dmamap_destroy(sc->aw_dma_buf_tag, sc->aw_dma_buf_map); if (bus_dma_tag_destroy(sc->aw_dma_buf_tag) != 0) device_printf(sc->aw_dev, "Cannot destroy the dma buf tag\n"); } static void aw_dma_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int err) { int i; struct aw_mmc_dma_desc *dma_desc; struct aw_mmc_softc *sc; sc = (struct aw_mmc_softc *)arg; sc->aw_dma_map_err = err; if (err) return; dma_desc = sc->aw_dma_desc; for (i = 0; i < nsegs; i++) { if (segs[i].ds_len == sc->aw_mmc_conf->dma_xferlen) dma_desc[i].buf_size = 0; /* Size of 0 indicate max len */ else dma_desc[i].buf_size = segs[i].ds_len; dma_desc[i].buf_addr = segs[i].ds_addr; dma_desc[i].config = AW_MMC_DMA_CONFIG_CH | AW_MMC_DMA_CONFIG_OWN | AW_MMC_DMA_CONFIG_DIC; dma_desc[i].next = sc->aw_dma_desc_phys + ((i + 1) * sizeof(struct aw_mmc_dma_desc)); } dma_desc[0].config |= AW_MMC_DMA_CONFIG_FD; dma_desc[nsegs - 1].config |= AW_MMC_DMA_CONFIG_LD | AW_MMC_DMA_CONFIG_ER; dma_desc[nsegs - 1].config &= ~AW_MMC_DMA_CONFIG_DIC; dma_desc[nsegs - 1].next = 0; } static int aw_mmc_prepare_dma(struct aw_mmc_softc *sc) { bus_dmasync_op_t sync_op; int error; struct mmc_command *cmd; uint32_t val; #ifdef MMCCAM cmd = &sc->ccb->mmcio.cmd; #else cmd = sc->aw_req->cmd; #endif if (cmd->data->len > (sc->aw_mmc_conf->dma_xferlen * AW_MMC_DMA_SEGS)) return (EFBIG); error = bus_dmamap_load(sc->aw_dma_buf_tag, sc->aw_dma_buf_map, cmd->data->data, cmd->data->len, aw_dma_cb, sc, 0); if (error) return (error); if (sc->aw_dma_map_err) return (sc->aw_dma_map_err); if (cmd->data->flags & MMC_DATA_WRITE) sync_op = BUS_DMASYNC_PREWRITE; else sync_op = BUS_DMASYNC_PREREAD; bus_dmamap_sync(sc->aw_dma_buf_tag, sc->aw_dma_buf_map, sync_op); bus_dmamap_sync(sc->aw_dma_tag, sc->aw_dma_map, BUS_DMASYNC_PREWRITE); /* Enable DMA */ val = AW_MMC_READ_4(sc, AW_MMC_GCTL); val &= ~AW_MMC_GCTL_FIFO_AC_MOD; val |= AW_MMC_GCTL_DMA_ENB; AW_MMC_WRITE_4(sc, AW_MMC_GCTL, val); /* Reset DMA */ val |= AW_MMC_GCTL_DMA_RST; AW_MMC_WRITE_4(sc, AW_MMC_GCTL, val); AW_MMC_WRITE_4(sc, AW_MMC_DMAC, AW_MMC_DMAC_IDMAC_SOFT_RST); AW_MMC_WRITE_4(sc, AW_MMC_DMAC, AW_MMC_DMAC_IDMAC_IDMA_ON | AW_MMC_DMAC_IDMAC_FIX_BURST); /* Enable RX or TX DMA interrupt */ val = AW_MMC_READ_4(sc, AW_MMC_IDIE); if (cmd->data->flags & MMC_DATA_WRITE) val |= AW_MMC_IDST_TX_INT; else val |= AW_MMC_IDST_RX_INT; AW_MMC_WRITE_4(sc, AW_MMC_IDIE, val); /* Set DMA descritptor list address */ AW_MMC_WRITE_4(sc, AW_MMC_DLBA, sc->aw_dma_desc_phys); /* FIFO trigger level */ AW_MMC_WRITE_4(sc, AW_MMC_FWLR, AW_MMC_DMA_FTRGLEVEL); return (0); } static int aw_mmc_reset(struct aw_mmc_softc *sc) { uint32_t reg; int timeout; reg = AW_MMC_READ_4(sc, AW_MMC_GCTL); reg |= AW_MMC_GCTL_RESET; AW_MMC_WRITE_4(sc, AW_MMC_GCTL, reg); timeout = AW_MMC_RESET_RETRY; while (--timeout > 0) { if ((AW_MMC_READ_4(sc, AW_MMC_GCTL) & AW_MMC_GCTL_RESET) == 0) break; DELAY(100); } if (timeout == 0) return (ETIMEDOUT); return (0); } static int aw_mmc_init(struct aw_mmc_softc *sc) { uint32_t reg; int ret; ret = aw_mmc_reset(sc); if (ret != 0) return (ret); /* Set the timeout. */ AW_MMC_WRITE_4(sc, AW_MMC_TMOR, AW_MMC_TMOR_DTO_LMT_SHIFT(AW_MMC_TMOR_DTO_LMT_MASK) | AW_MMC_TMOR_RTO_LMT_SHIFT(AW_MMC_TMOR_RTO_LMT_MASK)); /* Unmask interrupts. */ AW_MMC_WRITE_4(sc, AW_MMC_IMKR, 0); /* Clear pending interrupts. */ AW_MMC_WRITE_4(sc, AW_MMC_RISR, 0xffffffff); /* Debug register, undocumented */ AW_MMC_WRITE_4(sc, AW_MMC_DBGC, 0xdeb); /* Function select register */ AW_MMC_WRITE_4(sc, AW_MMC_FUNS, 0xceaa0000); AW_MMC_WRITE_4(sc, AW_MMC_IDST, 0xffffffff); /* Enable interrupts and disable AHB access. */ reg = AW_MMC_READ_4(sc, AW_MMC_GCTL); reg |= AW_MMC_GCTL_INT_ENB; reg &= ~AW_MMC_GCTL_FIFO_AC_MOD; reg &= ~AW_MMC_GCTL_WAIT_MEM_ACCESS; AW_MMC_WRITE_4(sc, AW_MMC_GCTL, reg); return (0); } static void aw_mmc_req_done(struct aw_mmc_softc *sc) { struct mmc_command *cmd; #ifdef MMCCAM union ccb *ccb; #else struct mmc_request *req; #endif uint32_t val, mask; int retry; #ifdef MMCCAM ccb = sc->ccb; cmd = &ccb->mmcio.cmd; #else cmd = sc->aw_req->cmd; #endif if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CMD)) { device_printf(sc->aw_dev, "%s: cmd %d err %d\n", __func__, cmd->opcode, cmd->error); } if (cmd->error != MMC_ERR_NONE) { /* Reset the FIFO and DMA engines. */ mask = AW_MMC_GCTL_FIFO_RST | AW_MMC_GCTL_DMA_RST; val = AW_MMC_READ_4(sc, AW_MMC_GCTL); AW_MMC_WRITE_4(sc, AW_MMC_GCTL, val | mask); retry = AW_MMC_RESET_RETRY; while (--retry > 0) { if ((AW_MMC_READ_4(sc, AW_MMC_GCTL) & AW_MMC_GCTL_RESET) == 0) break; DELAY(100); } if (retry == 0) device_printf(sc->aw_dev, "timeout resetting DMA/FIFO\n"); aw_mmc_update_clock(sc, 1); } callout_stop(&sc->aw_timeoutc); sc->aw_intr = 0; sc->aw_resid = 0; sc->aw_dma_map_err = 0; sc->aw_intr_wait = 0; #ifdef MMCCAM sc->ccb = NULL; ccb->ccb_h.status = (ccb->mmcio.cmd.error == 0 ? CAM_REQ_CMP : CAM_REQ_CMP_ERR); xpt_done(ccb); #else req = sc->aw_req; sc->aw_req = NULL; req->done(req); #endif } static void aw_mmc_req_ok(struct aw_mmc_softc *sc) { int timeout; struct mmc_command *cmd; uint32_t status; timeout = 1000; while (--timeout > 0) { status = AW_MMC_READ_4(sc, AW_MMC_STAR); if ((status & AW_MMC_STAR_CARD_BUSY) == 0) break; DELAY(1000); } #ifdef MMCCAM cmd = &sc->ccb->mmcio.cmd; #else cmd = sc->aw_req->cmd; #endif if (timeout == 0) { cmd->error = MMC_ERR_FAILED; aw_mmc_req_done(sc); return; } if (cmd->flags & MMC_RSP_PRESENT) { if (cmd->flags & MMC_RSP_136) { cmd->resp[0] = AW_MMC_READ_4(sc, AW_MMC_RESP3); cmd->resp[1] = AW_MMC_READ_4(sc, AW_MMC_RESP2); cmd->resp[2] = AW_MMC_READ_4(sc, AW_MMC_RESP1); cmd->resp[3] = AW_MMC_READ_4(sc, AW_MMC_RESP0); } else cmd->resp[0] = AW_MMC_READ_4(sc, AW_MMC_RESP0); } /* All data has been transferred ? */ if (cmd->data != NULL && (sc->aw_resid << 2) < cmd->data->len) cmd->error = MMC_ERR_FAILED; aw_mmc_req_done(sc); } static inline void set_mmc_error(struct aw_mmc_softc *sc, int error_code) { #ifdef MMCCAM sc->ccb->mmcio.cmd.error = error_code; #else sc->aw_req->cmd->error = error_code; #endif } static void aw_mmc_timeout(void *arg) { struct aw_mmc_softc *sc; sc = (struct aw_mmc_softc *)arg; #ifdef MMCCAM if (sc->ccb != NULL) { #else if (sc->aw_req != NULL) { #endif device_printf(sc->aw_dev, "controller timeout\n"); set_mmc_error(sc, MMC_ERR_TIMEOUT); aw_mmc_req_done(sc); } else device_printf(sc->aw_dev, "Spurious timeout - no active request\n"); } static void aw_mmc_print_error(uint32_t err) { if(err & AW_MMC_INT_RESP_ERR) printf("AW_MMC_INT_RESP_ERR "); if (err & AW_MMC_INT_RESP_CRC_ERR) printf("AW_MMC_INT_RESP_CRC_ERR "); if (err & AW_MMC_INT_DATA_CRC_ERR) printf("AW_MMC_INT_DATA_CRC_ERR "); if (err & AW_MMC_INT_RESP_TIMEOUT) printf("AW_MMC_INT_RESP_TIMEOUT "); if (err & AW_MMC_INT_FIFO_RUN_ERR) printf("AW_MMC_INT_FIFO_RUN_ERR "); if (err & AW_MMC_INT_CMD_BUSY) printf("AW_MMC_INT_CMD_BUSY "); if (err & AW_MMC_INT_DATA_START_ERR) printf("AW_MMC_INT_DATA_START_ERR "); if (err & AW_MMC_INT_DATA_END_BIT_ERR) printf("AW_MMC_INT_DATA_END_BIT_ERR"); printf("\n"); } static void aw_mmc_intr(void *arg) { bus_dmasync_op_t sync_op; struct aw_mmc_softc *sc; struct mmc_data *data; uint32_t idst, imask, rint; sc = (struct aw_mmc_softc *)arg; AW_MMC_LOCK(sc); rint = AW_MMC_READ_4(sc, AW_MMC_RISR); idst = AW_MMC_READ_4(sc, AW_MMC_IDST); imask = AW_MMC_READ_4(sc, AW_MMC_IMKR); if (idst == 0 && imask == 0 && rint == 0) { AW_MMC_UNLOCK(sc); return; } if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_INT)) { device_printf(sc->aw_dev, "idst: %#x, imask: %#x, rint: %#x\n", idst, imask, rint); } #ifdef MMCCAM if (sc->ccb == NULL) { #else if (sc->aw_req == NULL) { #endif device_printf(sc->aw_dev, "Spurious interrupt - no active request, rint: 0x%08X\n", rint); aw_mmc_print_error(rint); goto end; } if (rint & AW_MMC_INT_ERR_BIT) { if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_INT)) { device_printf(sc->aw_dev, "error rint: 0x%08X\n", rint); aw_mmc_print_error(rint); } if (rint & AW_MMC_INT_RESP_TIMEOUT) set_mmc_error(sc, MMC_ERR_TIMEOUT); else set_mmc_error(sc, MMC_ERR_FAILED); aw_mmc_req_done(sc); goto end; } if (idst & AW_MMC_IDST_ERROR) { if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_INT)) device_printf(sc->aw_dev, "error idst: 0x%08x\n", idst); set_mmc_error(sc, MMC_ERR_FAILED); aw_mmc_req_done(sc); goto end; } sc->aw_intr |= rint; #ifdef MMCCAM data = sc->ccb->mmcio.cmd.data; #else data = sc->aw_req->cmd->data; #endif if (data != NULL && (idst & AW_MMC_IDST_COMPLETE) != 0) { if (data->flags & MMC_DATA_WRITE) sync_op = BUS_DMASYNC_POSTWRITE; else sync_op = BUS_DMASYNC_POSTREAD; bus_dmamap_sync(sc->aw_dma_buf_tag, sc->aw_dma_buf_map, sync_op); bus_dmamap_sync(sc->aw_dma_tag, sc->aw_dma_map, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->aw_dma_buf_tag, sc->aw_dma_buf_map); sc->aw_resid = data->len >> 2; } if ((sc->aw_intr & sc->aw_intr_wait) == sc->aw_intr_wait) aw_mmc_req_ok(sc); end: AW_MMC_WRITE_4(sc, AW_MMC_IDST, idst); AW_MMC_WRITE_4(sc, AW_MMC_RISR, rint); AW_MMC_UNLOCK(sc); } static int aw_mmc_request(device_t bus, device_t child, struct mmc_request *req) { int blksz; struct aw_mmc_softc *sc; struct mmc_command *cmd; uint32_t cmdreg, imask; int err; sc = device_get_softc(bus); AW_MMC_LOCK(sc); #ifdef MMCCAM KASSERT(req == NULL, ("req should be NULL in MMCCAM case!")); /* * For MMCCAM, sc->ccb has been NULL-checked and populated * by aw_mmc_cam_request() already. */ cmd = &sc->ccb->mmcio.cmd; #else if (sc->aw_req) { AW_MMC_UNLOCK(sc); return (EBUSY); } sc->aw_req = req; cmd = req->cmd; if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CMD)) { device_printf(sc->aw_dev, "CMD%u arg %#x flags %#x dlen %u dflags %#x\n", cmd->opcode, cmd->arg, cmd->flags, cmd->data != NULL ? (unsigned int)cmd->data->len : 0, cmd->data != NULL ? cmd->data->flags: 0); } #endif cmdreg = AW_MMC_CMDR_LOAD; imask = AW_MMC_INT_ERR_BIT; sc->aw_intr_wait = 0; sc->aw_intr = 0; sc->aw_resid = 0; cmd->error = MMC_ERR_NONE; if (cmd->opcode == MMC_GO_IDLE_STATE) cmdreg |= AW_MMC_CMDR_SEND_INIT_SEQ; if (cmd->flags & MMC_RSP_PRESENT) cmdreg |= AW_MMC_CMDR_RESP_RCV; if (cmd->flags & MMC_RSP_136) cmdreg |= AW_MMC_CMDR_LONG_RESP; if (cmd->flags & MMC_RSP_CRC) cmdreg |= AW_MMC_CMDR_CHK_RESP_CRC; if (cmd->data) { cmdreg |= AW_MMC_CMDR_DATA_TRANS | AW_MMC_CMDR_WAIT_PRE_OVER; if (cmd->data->flags & MMC_DATA_MULTI) { cmdreg |= AW_MMC_CMDR_STOP_CMD_FLAG; imask |= AW_MMC_INT_AUTO_STOP_DONE; sc->aw_intr_wait |= AW_MMC_INT_AUTO_STOP_DONE; } else { sc->aw_intr_wait |= AW_MMC_INT_DATA_OVER; imask |= AW_MMC_INT_DATA_OVER; } if (cmd->data->flags & MMC_DATA_WRITE) cmdreg |= AW_MMC_CMDR_DIR_WRITE; #ifdef MMCCAM if (cmd->data->flags & MMC_DATA_BLOCK_SIZE) { AW_MMC_WRITE_4(sc, AW_MMC_BKSR, cmd->data->block_size); AW_MMC_WRITE_4(sc, AW_MMC_BYCR, cmd->data->len); } else #endif { blksz = min(cmd->data->len, MMC_SECTOR_SIZE); AW_MMC_WRITE_4(sc, AW_MMC_BKSR, blksz); AW_MMC_WRITE_4(sc, AW_MMC_BYCR, cmd->data->len); } } else { imask |= AW_MMC_INT_CMD_DONE; } /* Enable the interrupts we are interested in */ AW_MMC_WRITE_4(sc, AW_MMC_IMKR, imask); AW_MMC_WRITE_4(sc, AW_MMC_RISR, 0xffffffff); /* Enable auto stop if needed */ AW_MMC_WRITE_4(sc, AW_MMC_A12A, cmdreg & AW_MMC_CMDR_STOP_CMD_FLAG ? 0 : 0xffff); /* Write the command argument */ AW_MMC_WRITE_4(sc, AW_MMC_CAGR, cmd->arg); /* * If we don't have data start the request * if we do prepare the dma request and start the request */ if (cmd->data == NULL) { AW_MMC_WRITE_4(sc, AW_MMC_CMDR, cmdreg | cmd->opcode); } else { err = aw_mmc_prepare_dma(sc); if (err != 0) device_printf(sc->aw_dev, "prepare_dma failed: %d\n", err); AW_MMC_WRITE_4(sc, AW_MMC_CMDR, cmdreg | cmd->opcode); } callout_reset(&sc->aw_timeoutc, sc->aw_timeout * hz, aw_mmc_timeout, sc); AW_MMC_UNLOCK(sc); return (0); } static int aw_mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result) { struct aw_mmc_softc *sc; sc = device_get_softc(bus); switch (which) { default: return (EINVAL); case MMCBR_IVAR_BUS_MODE: *(int *)result = sc->aw_host.ios.bus_mode; break; case MMCBR_IVAR_BUS_WIDTH: *(int *)result = sc->aw_host.ios.bus_width; break; case MMCBR_IVAR_CHIP_SELECT: *(int *)result = sc->aw_host.ios.chip_select; break; case MMCBR_IVAR_CLOCK: *(int *)result = sc->aw_host.ios.clock; break; case MMCBR_IVAR_F_MIN: *(int *)result = sc->aw_host.f_min; break; case MMCBR_IVAR_F_MAX: *(int *)result = sc->aw_host.f_max; break; case MMCBR_IVAR_HOST_OCR: *(int *)result = sc->aw_host.host_ocr; break; case MMCBR_IVAR_MODE: *(int *)result = sc->aw_host.mode; break; case MMCBR_IVAR_OCR: *(int *)result = sc->aw_host.ocr; break; case MMCBR_IVAR_POWER_MODE: *(int *)result = sc->aw_host.ios.power_mode; break; case MMCBR_IVAR_VDD: *(int *)result = sc->aw_host.ios.vdd; break; case MMCBR_IVAR_VCCQ: *(int *)result = sc->aw_host.ios.vccq; break; case MMCBR_IVAR_CAPS: *(int *)result = sc->aw_host.caps; break; case MMCBR_IVAR_TIMING: *(int *)result = sc->aw_host.ios.timing; break; case MMCBR_IVAR_MAX_DATA: *(int *)result = (sc->aw_mmc_conf->dma_xferlen * AW_MMC_DMA_SEGS) / MMC_SECTOR_SIZE; break; case MMCBR_IVAR_RETUNE_REQ: *(int *)result = retune_req_none; break; } return (0); } static int aw_mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value) { struct aw_mmc_softc *sc; sc = device_get_softc(bus); switch (which) { default: return (EINVAL); case MMCBR_IVAR_BUS_MODE: sc->aw_host.ios.bus_mode = value; break; case MMCBR_IVAR_BUS_WIDTH: sc->aw_host.ios.bus_width = value; break; case MMCBR_IVAR_CHIP_SELECT: sc->aw_host.ios.chip_select = value; break; case MMCBR_IVAR_CLOCK: sc->aw_host.ios.clock = value; break; case MMCBR_IVAR_MODE: sc->aw_host.mode = value; break; case MMCBR_IVAR_OCR: sc->aw_host.ocr = value; break; case MMCBR_IVAR_POWER_MODE: sc->aw_host.ios.power_mode = value; break; case MMCBR_IVAR_VDD: sc->aw_host.ios.vdd = value; break; case MMCBR_IVAR_VCCQ: sc->aw_host.ios.vccq = value; break; case MMCBR_IVAR_TIMING: sc->aw_host.ios.timing = value; break; /* These are read-only */ case MMCBR_IVAR_CAPS: case MMCBR_IVAR_HOST_OCR: case MMCBR_IVAR_F_MIN: case MMCBR_IVAR_F_MAX: case MMCBR_IVAR_MAX_DATA: return (EINVAL); } return (0); } static int aw_mmc_update_clock(struct aw_mmc_softc *sc, uint32_t clkon) { uint32_t reg; int retry; reg = AW_MMC_READ_4(sc, AW_MMC_CKCR); reg &= ~(AW_MMC_CKCR_ENB | AW_MMC_CKCR_LOW_POWER | AW_MMC_CKCR_MASK_DATA0); if (clkon) reg |= AW_MMC_CKCR_ENB; if (sc->aw_mmc_conf->mask_data0) reg |= AW_MMC_CKCR_MASK_DATA0; AW_MMC_WRITE_4(sc, AW_MMC_CKCR, reg); reg = AW_MMC_CMDR_LOAD | AW_MMC_CMDR_PRG_CLK | AW_MMC_CMDR_WAIT_PRE_OVER; AW_MMC_WRITE_4(sc, AW_MMC_CMDR, reg); retry = 0xfffff; while (reg & AW_MMC_CMDR_LOAD && --retry > 0) { reg = AW_MMC_READ_4(sc, AW_MMC_CMDR); DELAY(10); } AW_MMC_WRITE_4(sc, AW_MMC_RISR, 0xffffffff); if (reg & AW_MMC_CMDR_LOAD) { device_printf(sc->aw_dev, "timeout updating clock\n"); return (ETIMEDOUT); } if (sc->aw_mmc_conf->mask_data0) { reg = AW_MMC_READ_4(sc, AW_MMC_CKCR); reg &= ~AW_MMC_CKCR_MASK_DATA0; AW_MMC_WRITE_4(sc, AW_MMC_CKCR, reg); } return (0); } #ifndef MMCCAM static int aw_mmc_switch_vccq(device_t bus, device_t child) { struct aw_mmc_softc *sc; int uvolt, err; sc = device_get_softc(bus); if (sc->mmc_helper.vqmmc_supply == NULL) return EOPNOTSUPP; switch (sc->aw_host.ios.vccq) { case vccq_180: uvolt = 1800000; break; case vccq_330: uvolt = 3300000; break; default: return EINVAL; } err = regulator_set_voltage(sc->mmc_helper.vqmmc_supply, uvolt, uvolt); if (err != 0) { device_printf(sc->aw_dev, "Cannot set vqmmc to %d<->%d\n", uvolt, uvolt); return (err); } return (0); } #endif static int aw_mmc_update_ios(device_t bus, device_t child) { int error; struct aw_mmc_softc *sc; struct mmc_ios *ios; unsigned int clock; uint32_t reg, div = 1; int reg_status; int rv; sc = device_get_softc(bus); ios = &sc->aw_host.ios; /* Set the bus width. */ switch (ios->bus_width) { case bus_width_1: AW_MMC_WRITE_4(sc, AW_MMC_BWDR, AW_MMC_BWDR1); break; case bus_width_4: AW_MMC_WRITE_4(sc, AW_MMC_BWDR, AW_MMC_BWDR4); break; case bus_width_8: AW_MMC_WRITE_4(sc, AW_MMC_BWDR, AW_MMC_BWDR8); break; } switch (ios->power_mode) { case power_on: break; case power_off: if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD)) device_printf(sc->aw_dev, "Powering down sd/mmc\n"); if (sc->mmc_helper.vmmc_supply) { rv = regulator_status(sc->mmc_helper.vmmc_supply, ®_status); if (rv == 0 && reg_status == REGULATOR_STATUS_ENABLED) regulator_disable(sc->mmc_helper.vmmc_supply); } if (sc->mmc_helper.vqmmc_supply) { rv = regulator_status(sc->mmc_helper.vqmmc_supply, ®_status); if (rv == 0 && reg_status == REGULATOR_STATUS_ENABLED) regulator_disable(sc->mmc_helper.vqmmc_supply); } if (sc->mmc_helper.mmc_pwrseq) MMC_PWRSEQ_SET_POWER(sc->mmc_helper.mmc_pwrseq, false); aw_mmc_reset(sc); break; case power_up: if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD)) device_printf(sc->aw_dev, "Powering up sd/mmc\n"); if (sc->mmc_helper.vmmc_supply) { rv = regulator_status(sc->mmc_helper.vmmc_supply, ®_status); if (rv == 0 && reg_status != REGULATOR_STATUS_ENABLED) regulator_enable(sc->mmc_helper.vmmc_supply); } if (sc->mmc_helper.vqmmc_supply) { rv = regulator_status(sc->mmc_helper.vqmmc_supply, ®_status); if (rv == 0 && reg_status != REGULATOR_STATUS_ENABLED) regulator_enable(sc->mmc_helper.vqmmc_supply); } if (sc->mmc_helper.mmc_pwrseq) MMC_PWRSEQ_SET_POWER(sc->mmc_helper.mmc_pwrseq, true); aw_mmc_init(sc); break; }; /* Enable ddr mode if needed */ reg = AW_MMC_READ_4(sc, AW_MMC_GCTL); if (ios->timing == bus_timing_uhs_ddr50 || ios->timing == bus_timing_mmc_ddr52) reg |= AW_MMC_GCTL_DDR_MOD_SEL; else reg &= ~AW_MMC_GCTL_DDR_MOD_SEL; AW_MMC_WRITE_4(sc, AW_MMC_GCTL, reg); if (ios->clock && ios->clock != sc->aw_clock) { sc->aw_clock = clock = ios->clock; /* Disable clock */ error = aw_mmc_update_clock(sc, 0); if (error != 0) return (error); if (ios->timing == bus_timing_mmc_ddr52 && (sc->aw_mmc_conf->new_timing || ios->bus_width == bus_width_8)) { div = 2; clock <<= 1; } /* Reset the divider. */ reg = AW_MMC_READ_4(sc, AW_MMC_CKCR); reg &= ~AW_MMC_CKCR_DIV; reg |= div - 1; AW_MMC_WRITE_4(sc, AW_MMC_CKCR, reg); /* New timing mode if needed */ if (sc->aw_mmc_conf->new_timing) { reg = AW_MMC_READ_4(sc, AW_MMC_NTSR); reg |= AW_MMC_NTSR_MODE_SELECT; AW_MMC_WRITE_4(sc, AW_MMC_NTSR, reg); } /* Set the MMC clock. */ error = clk_disable(sc->aw_clk_mmc); if (error != 0 && bootverbose) device_printf(sc->aw_dev, "failed to disable mmc clock: %d\n", error); error = clk_set_freq(sc->aw_clk_mmc, clock, CLK_SET_ROUND_DOWN); if (error != 0) { device_printf(sc->aw_dev, "failed to set frequency to %u Hz: %d\n", clock, error); return (error); } error = clk_enable(sc->aw_clk_mmc); if (error != 0 && bootverbose) device_printf(sc->aw_dev, "failed to re-enable mmc clock: %d\n", error); if (sc->aw_mmc_conf->can_calibrate) AW_MMC_WRITE_4(sc, AW_MMC_SAMP_DL, AW_MMC_SAMP_DL_SW_EN); /* Enable clock. */ error = aw_mmc_update_clock(sc, 1); if (error != 0) return (error); } return (0); } #ifndef MMCCAM static int aw_mmc_get_ro(device_t bus, device_t child) { struct aw_mmc_softc *sc; sc = device_get_softc(bus); return (mmc_fdt_gpio_get_readonly(&sc->mmc_helper)); } static int aw_mmc_acquire_host(device_t bus, device_t child) { struct aw_mmc_softc *sc; int error; sc = device_get_softc(bus); AW_MMC_LOCK(sc); while (sc->aw_bus_busy) { error = msleep(sc, &sc->aw_mtx, PCATCH, "mmchw", 0); if (error != 0) { AW_MMC_UNLOCK(sc); return (error); } } sc->aw_bus_busy++; AW_MMC_UNLOCK(sc); return (0); } static int aw_mmc_release_host(device_t bus, device_t child) { struct aw_mmc_softc *sc; sc = device_get_softc(bus); AW_MMC_LOCK(sc); sc->aw_bus_busy--; wakeup(sc); AW_MMC_UNLOCK(sc); return (0); } #endif static device_method_t aw_mmc_methods[] = { /* Device interface */ DEVMETHOD(device_probe, aw_mmc_probe), DEVMETHOD(device_attach, aw_mmc_attach), DEVMETHOD(device_detach, aw_mmc_detach), /* Bus interface */ DEVMETHOD(bus_read_ivar, aw_mmc_read_ivar), DEVMETHOD(bus_write_ivar, aw_mmc_write_ivar), DEVMETHOD(bus_add_child, bus_generic_add_child), #ifndef MMCCAM /* MMC bridge interface */ DEVMETHOD(mmcbr_update_ios, aw_mmc_update_ios), DEVMETHOD(mmcbr_request, aw_mmc_request), DEVMETHOD(mmcbr_get_ro, aw_mmc_get_ro), DEVMETHOD(mmcbr_switch_vccq, aw_mmc_switch_vccq), DEVMETHOD(mmcbr_acquire_host, aw_mmc_acquire_host), DEVMETHOD(mmcbr_release_host, aw_mmc_release_host), #endif #ifdef MMCCAM /* MMCCAM interface */ DEVMETHOD(mmc_sim_get_tran_settings, aw_mmc_get_tran_settings), DEVMETHOD(mmc_sim_set_tran_settings, aw_mmc_set_tran_settings), DEVMETHOD(mmc_sim_cam_request, aw_mmc_cam_request), #endif DEVMETHOD_END }; static devclass_t aw_mmc_devclass; static driver_t aw_mmc_driver = { "aw_mmc", aw_mmc_methods, sizeof(struct aw_mmc_softc), }; DRIVER_MODULE(aw_mmc, simplebus, aw_mmc_driver, aw_mmc_devclass, NULL, NULL); #ifndef MMCCAM MMC_DECLARE_BRIDGE(aw_mmc); #endif SIMPLEBUS_PNP_INFO(compat_data);