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1533 lines
42 KiB
C
1533 lines
42 KiB
C
/*-
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* Copyright (c) 2006 Bernd Walter. All rights reserved.
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* Copyright (c) 2006 M. Warner Losh. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Portions of this software may have been developed with reference to
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* the SD Simplified Specification. The following disclaimer may apply:
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*
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* The following conditions apply to the release of the simplified
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* specification ("Simplified Specification") by the SD Card Association and
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* the SD Group. The Simplified Specification is a subset of the complete SD
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* Specification which is owned by the SD Card Association and the SD
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* Group. This Simplified Specification is provided on a non-confidential
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* basis subject to the disclaimers below. Any implementation of the
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* Simplified Specification may require a license from the SD Card
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* Association, SD Group, SD-3C LLC or other third parties.
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*
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* Disclaimers:
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*
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* The information contained in the Simplified Specification is presented only
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* as a standard specification for SD Cards and SD Host/Ancillary products and
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* is provided "AS-IS" without any representations or warranties of any
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* kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD
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* Card Association for any damages, any infringements of patents or other
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* right of the SD Group, SD-3C LLC, the SD Card Association or any third
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* parties, which may result from its use. No license is granted by
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* implication, estoppel or otherwise under any patent or other rights of the
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* SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing
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* herein shall be construed as an obligation by the SD Group, the SD-3C LLC
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* or the SD Card Association to disclose or distribute any technical
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* information, know-how or other confidential information to any third party.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/sysctl.h>
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#include <dev/mmc/mmcreg.h>
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#include <dev/mmc/mmcbrvar.h>
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#include <dev/mmc/mmcvar.h>
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#include "mmcbr_if.h"
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#include "mmcbus_if.h"
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struct mmc_softc {
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device_t dev;
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struct mtx sc_mtx;
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struct intr_config_hook config_intrhook;
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device_t owner;
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uint32_t last_rca;
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};
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/*
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* Per-card data
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*/
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struct mmc_ivars {
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uint32_t raw_cid[4]; /* Raw bits of the CID */
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uint32_t raw_csd[4]; /* Raw bits of the CSD */
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uint32_t raw_scr[2]; /* Raw bits of the SCR */
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uint8_t raw_ext_csd[512]; /* Raw bits of the EXT_CSD */
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uint32_t raw_sd_status[16]; /* Raw bits of the SD_STATUS */
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uint16_t rca;
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enum mmc_card_mode mode;
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struct mmc_cid cid; /* cid decoded */
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struct mmc_csd csd; /* csd decoded */
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struct mmc_scr scr; /* scr decoded */
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struct mmc_sd_status sd_status; /* SD_STATUS decoded */
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u_char read_only; /* True when the device is read-only */
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u_char bus_width; /* Bus width to use */
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u_char timing; /* Bus timing support */
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u_char high_cap; /* High Capacity card (block addressed) */
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uint32_t sec_count; /* Card capacity in 512byte blocks */
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uint32_t tran_speed; /* Max speed in normal mode */
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uint32_t hs_tran_speed; /* Max speed in high speed mode */
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uint32_t erase_sector; /* Card native erase sector size */
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};
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#define CMD_RETRIES 3
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SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver");
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static int mmc_debug;
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SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level");
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/* bus entry points */
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static int mmc_probe(device_t dev);
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static int mmc_attach(device_t dev);
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static int mmc_detach(device_t dev);
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static int mmc_suspend(device_t dev);
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static int mmc_resume(device_t dev);
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#define MMC_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
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#define MMC_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
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#define MMC_LOCK_INIT(_sc) \
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mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
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"mmc", MTX_DEF)
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#define MMC_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
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#define MMC_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
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#define MMC_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
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static int mmc_calculate_clock(struct mmc_softc *sc);
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static void mmc_delayed_attach(void *);
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static void mmc_power_down(struct mmc_softc *sc);
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static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd,
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int retries);
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static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
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uint32_t arg, uint32_t flags, uint32_t *resp, int retries);
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static int mmc_select_card(struct mmc_softc *sc, uint16_t rca);
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static int mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width);
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static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr);
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static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr);
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static int mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd);
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static void mmc_scan(struct mmc_softc *sc);
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static int mmc_delete_cards(struct mmc_softc *sc);
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static void
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mmc_ms_delay(int ms)
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{
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DELAY(1000 * ms); /* XXX BAD */
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}
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static int
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mmc_probe(device_t dev)
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{
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device_set_desc(dev, "MMC/SD bus");
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return (0);
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}
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static int
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mmc_attach(device_t dev)
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{
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struct mmc_softc *sc;
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sc = device_get_softc(dev);
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sc->dev = dev;
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MMC_LOCK_INIT(sc);
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/* We'll probe and attach our children later, but before / mount */
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sc->config_intrhook.ich_func = mmc_delayed_attach;
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sc->config_intrhook.ich_arg = sc;
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if (config_intrhook_establish(&sc->config_intrhook) != 0)
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device_printf(dev, "config_intrhook_establish failed\n");
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return (0);
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}
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static int
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mmc_detach(device_t dev)
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{
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struct mmc_softc *sc = device_get_softc(dev);
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int err;
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if ((err = mmc_delete_cards(sc)) != 0)
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return (err);
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mmc_power_down(sc);
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MMC_LOCK_DESTROY(sc);
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return (0);
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}
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static int
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mmc_suspend(device_t dev)
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{
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struct mmc_softc *sc = device_get_softc(dev);
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int err;
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err = bus_generic_suspend(dev);
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if (err)
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return (err);
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mmc_power_down(sc);
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return (0);
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}
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static int
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mmc_resume(device_t dev)
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{
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struct mmc_softc *sc = device_get_softc(dev);
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mmc_scan(sc);
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return (bus_generic_resume(dev));
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}
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static int
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mmc_acquire_bus(device_t busdev, device_t dev)
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{
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struct mmc_softc *sc;
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struct mmc_ivars *ivar;
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int err;
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int rca;
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err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev);
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if (err)
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return (err);
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sc = device_get_softc(busdev);
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MMC_LOCK(sc);
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if (sc->owner)
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panic("mmc: host bridge didn't seralize us.");
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sc->owner = dev;
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MMC_UNLOCK(sc);
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if (busdev != dev) {
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/*
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* Keep track of the last rca that we've selected. If
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* we're asked to do it again, don't. We never
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* unselect unless the bus code itself wants the mmc
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* bus, and constantly reselecting causes problems.
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*/
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rca = mmc_get_rca(dev);
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if (sc->last_rca != rca) {
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mmc_select_card(sc, rca);
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sc->last_rca = rca;
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/* Prepare bus width for the new card. */
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ivar = device_get_ivars(dev);
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if (bootverbose || mmc_debug) {
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device_printf(busdev,
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"setting bus width to %d bits\n",
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(ivar->bus_width == bus_width_4) ? 4 :
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(ivar->bus_width == bus_width_8) ? 8 : 1);
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}
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mmc_set_card_bus_width(sc, rca, ivar->bus_width);
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mmcbr_set_bus_width(busdev, ivar->bus_width);
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mmcbr_update_ios(busdev);
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}
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} else {
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/*
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* If there's a card selected, stand down.
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*/
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if (sc->last_rca != 0) {
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mmc_select_card(sc, 0);
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sc->last_rca = 0;
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}
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}
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return (0);
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}
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static int
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mmc_release_bus(device_t busdev, device_t dev)
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{
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struct mmc_softc *sc;
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int err;
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sc = device_get_softc(busdev);
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MMC_LOCK(sc);
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if (!sc->owner)
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panic("mmc: releasing unowned bus.");
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if (sc->owner != dev)
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panic("mmc: you don't own the bus. game over.");
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MMC_UNLOCK(sc);
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err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev);
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if (err)
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return (err);
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MMC_LOCK(sc);
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sc->owner = NULL;
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MMC_UNLOCK(sc);
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return (0);
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}
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static uint32_t
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mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr)
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{
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return (ocr & MMC_OCR_VOLTAGE);
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}
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static int
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mmc_highest_voltage(uint32_t ocr)
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{
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int i;
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for (i = 30; i >= 0; i--)
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if (ocr & (1 << i))
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return (i);
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return (-1);
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}
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static void
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mmc_wakeup(struct mmc_request *req)
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{
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struct mmc_softc *sc;
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sc = (struct mmc_softc *)req->done_data;
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MMC_LOCK(sc);
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req->flags |= MMC_REQ_DONE;
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MMC_UNLOCK(sc);
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wakeup(req);
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}
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static int
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mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req)
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{
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req->done = mmc_wakeup;
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req->done_data = sc;
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if (mmc_debug > 1) {
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device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x",
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req->cmd->opcode, req->cmd->arg, req->cmd->flags);
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if (req->cmd->data) {
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printf(" data %d\n", (int)req->cmd->data->len);
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} else
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printf("\n");
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}
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MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req);
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MMC_LOCK(sc);
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while ((req->flags & MMC_REQ_DONE) == 0)
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msleep(req, &sc->sc_mtx, 0, "mmcreq", 0);
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MMC_UNLOCK(sc);
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if (mmc_debug > 2 || (mmc_debug > 1 && req->cmd->error))
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device_printf(sc->dev, "RESULT: %d\n", req->cmd->error);
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return (0);
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}
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static int
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mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req)
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{
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struct mmc_softc *sc = device_get_softc(brdev);
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return (mmc_wait_for_req(sc, req));
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}
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static int
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mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries)
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{
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struct mmc_request mreq;
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memset(&mreq, 0, sizeof(mreq));
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memset(cmd->resp, 0, sizeof(cmd->resp));
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cmd->retries = retries;
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mreq.cmd = cmd;
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mmc_wait_for_req(sc, &mreq);
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return (cmd->error);
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}
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static int
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mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
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struct mmc_command *cmd, int retries)
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{
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struct mmc_command appcmd;
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int err = MMC_ERR_NONE, i;
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for (i = 0; i <= retries; i++) {
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appcmd.opcode = MMC_APP_CMD;
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appcmd.arg = rca << 16;
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appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
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appcmd.data = NULL;
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mmc_wait_for_cmd(sc, &appcmd, 0);
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err = appcmd.error;
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if (err != MMC_ERR_NONE)
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continue;
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if (!(appcmd.resp[0] & R1_APP_CMD))
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return MMC_ERR_FAILED;
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mmc_wait_for_cmd(sc, cmd, 0);
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err = cmd->error;
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if (err == MMC_ERR_NONE)
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break;
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}
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return (err);
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}
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static int
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mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
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uint32_t arg, uint32_t flags, uint32_t *resp, int retries)
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{
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struct mmc_command cmd;
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int err;
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memset(&cmd, 0, sizeof(cmd));
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cmd.opcode = opcode;
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cmd.arg = arg;
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cmd.flags = flags;
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cmd.data = NULL;
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err = mmc_wait_for_cmd(sc, &cmd, retries);
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if (err)
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return (err);
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if (cmd.error)
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return (cmd.error);
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if (resp) {
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if (flags & MMC_RSP_136)
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memcpy(resp, cmd.resp, 4 * sizeof(uint32_t));
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else
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*resp = cmd.resp[0];
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}
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return (0);
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}
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|
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static void
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mmc_idle_cards(struct mmc_softc *sc)
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{
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device_t dev;
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struct mmc_command cmd;
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dev = sc->dev;
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mmcbr_set_chip_select(dev, cs_high);
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mmcbr_update_ios(dev);
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mmc_ms_delay(1);
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memset(&cmd, 0, sizeof(cmd));
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cmd.opcode = MMC_GO_IDLE_STATE;
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cmd.arg = 0;
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cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
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cmd.data = NULL;
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mmc_wait_for_cmd(sc, &cmd, 0);
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mmc_ms_delay(1);
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mmcbr_set_chip_select(dev, cs_dontcare);
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mmcbr_update_ios(dev);
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mmc_ms_delay(1);
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}
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|
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static int
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mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
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{
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struct mmc_command cmd;
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int err = MMC_ERR_NONE, i;
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memset(&cmd, 0, sizeof(cmd));
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cmd.opcode = ACMD_SD_SEND_OP_COND;
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cmd.arg = ocr;
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cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
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cmd.data = NULL;
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for (i = 0; i < 100; i++) {
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err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES);
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if (err != MMC_ERR_NONE)
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break;
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if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
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(ocr & MMC_OCR_VOLTAGE) == 0)
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break;
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err = MMC_ERR_TIMEOUT;
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mmc_ms_delay(10);
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}
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if (rocr && err == MMC_ERR_NONE)
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*rocr = cmd.resp[0];
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return (err);
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}
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|
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static int
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mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
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{
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struct mmc_command cmd;
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int err = MMC_ERR_NONE, i;
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memset(&cmd, 0, sizeof(cmd));
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cmd.opcode = MMC_SEND_OP_COND;
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cmd.arg = ocr;
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cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
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cmd.data = NULL;
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for (i = 0; i < 100; i++) {
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err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
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if (err != MMC_ERR_NONE)
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break;
|
|
if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
|
|
(ocr & MMC_OCR_VOLTAGE) == 0)
|
|
break;
|
|
err = MMC_ERR_TIMEOUT;
|
|
mmc_ms_delay(10);
|
|
}
|
|
if (rocr && err == MMC_ERR_NONE)
|
|
*rocr = cmd.resp[0];
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs)
|
|
{
|
|
struct mmc_command cmd;
|
|
int err;
|
|
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
cmd.opcode = SD_SEND_IF_COND;
|
|
cmd.arg = (vhs << 8) + 0xAA;
|
|
cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
|
|
cmd.data = NULL;
|
|
|
|
err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
|
|
return (err);
|
|
}
|
|
|
|
static void
|
|
mmc_power_up(struct mmc_softc *sc)
|
|
{
|
|
device_t dev;
|
|
|
|
dev = sc->dev;
|
|
mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev)));
|
|
mmcbr_set_bus_mode(dev, opendrain);
|
|
mmcbr_set_chip_select(dev, cs_dontcare);
|
|
mmcbr_set_bus_width(dev, bus_width_1);
|
|
mmcbr_set_power_mode(dev, power_up);
|
|
mmcbr_set_clock(dev, 0);
|
|
mmcbr_update_ios(dev);
|
|
mmc_ms_delay(1);
|
|
|
|
mmcbr_set_clock(dev, mmcbr_get_f_min(sc->dev));
|
|
mmcbr_set_timing(dev, bus_timing_normal);
|
|
mmcbr_set_power_mode(dev, power_on);
|
|
mmcbr_update_ios(dev);
|
|
mmc_ms_delay(2);
|
|
}
|
|
|
|
static void
|
|
mmc_power_down(struct mmc_softc *sc)
|
|
{
|
|
device_t dev = sc->dev;
|
|
|
|
mmcbr_set_bus_mode(dev, opendrain);
|
|
mmcbr_set_chip_select(dev, cs_dontcare);
|
|
mmcbr_set_bus_width(dev, bus_width_1);
|
|
mmcbr_set_power_mode(dev, power_off);
|
|
mmcbr_set_clock(dev, 0);
|
|
mmcbr_set_timing(dev, bus_timing_normal);
|
|
mmcbr_update_ios(dev);
|
|
}
|
|
|
|
static int
|
|
mmc_select_card(struct mmc_softc *sc, uint16_t rca)
|
|
{
|
|
int flags;
|
|
|
|
flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC;
|
|
return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16,
|
|
flags, NULL, CMD_RETRIES));
|
|
}
|
|
|
|
static int
|
|
mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value)
|
|
{
|
|
struct mmc_command cmd;
|
|
int err;
|
|
|
|
cmd.opcode = MMC_SWITCH_FUNC;
|
|
cmd.arg = (MMC_SWITCH_FUNC_WR << 24) |
|
|
(index << 16) |
|
|
(value << 8) |
|
|
set;
|
|
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
|
|
cmd.data = NULL;
|
|
err = mmc_wait_for_cmd(sc, &cmd, 0);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value,
|
|
uint8_t *res)
|
|
{
|
|
int err;
|
|
struct mmc_command cmd;
|
|
struct mmc_data data;
|
|
|
|
memset(&cmd, 0, sizeof(struct mmc_command));
|
|
memset(&data, 0, sizeof(struct mmc_data));
|
|
memset(res, 0, 64);
|
|
|
|
cmd.opcode = SD_SWITCH_FUNC;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
cmd.arg = mode << 31; /* 0 - check, 1 - set */
|
|
cmd.arg |= 0x00FFFFFF;
|
|
cmd.arg &= ~(0xF << (grp * 4));
|
|
cmd.arg |= value << (grp * 4);
|
|
cmd.data = &data;
|
|
|
|
data.data = res;
|
|
data.len = 64;
|
|
data.flags = MMC_DATA_READ;
|
|
|
|
err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width)
|
|
{
|
|
struct mmc_command cmd;
|
|
int err;
|
|
uint8_t value;
|
|
|
|
if (mmcbr_get_mode(sc->dev) == mode_sd) {
|
|
memset(&cmd, 0, sizeof(struct mmc_command));
|
|
cmd.opcode = ACMD_SET_BUS_WIDTH;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
|
|
switch (width) {
|
|
case bus_width_1:
|
|
cmd.arg = SD_BUS_WIDTH_1;
|
|
break;
|
|
case bus_width_4:
|
|
cmd.arg = SD_BUS_WIDTH_4;
|
|
break;
|
|
default:
|
|
return (MMC_ERR_INVALID);
|
|
}
|
|
err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
|
|
} else {
|
|
switch (width) {
|
|
case bus_width_1:
|
|
value = EXT_CSD_BUS_WIDTH_1;
|
|
break;
|
|
case bus_width_4:
|
|
value = EXT_CSD_BUS_WIDTH_4;
|
|
break;
|
|
case bus_width_8:
|
|
value = EXT_CSD_BUS_WIDTH_8;
|
|
break;
|
|
default:
|
|
return (MMC_ERR_INVALID);
|
|
}
|
|
err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
|
|
value);
|
|
}
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_set_timing(struct mmc_softc *sc, int timing)
|
|
{
|
|
int err;
|
|
uint8_t value;
|
|
u_char switch_res[64];
|
|
|
|
switch (timing) {
|
|
case bus_timing_normal:
|
|
value = 0;
|
|
break;
|
|
case bus_timing_hs:
|
|
value = 1;
|
|
break;
|
|
default:
|
|
return (MMC_ERR_INVALID);
|
|
}
|
|
if (mmcbr_get_mode(sc->dev) == mode_sd)
|
|
err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1,
|
|
value, switch_res);
|
|
else
|
|
err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_HS_TIMING, value);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_test_bus_width(struct mmc_softc *sc)
|
|
{
|
|
struct mmc_command cmd;
|
|
struct mmc_data data;
|
|
int err;
|
|
uint8_t buf[8];
|
|
uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
|
uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
|
uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, };
|
|
uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, };
|
|
|
|
if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) {
|
|
mmcbr_set_bus_width(sc->dev, bus_width_8);
|
|
mmcbr_update_ios(sc->dev);
|
|
|
|
cmd.opcode = MMC_BUSTEST_W;
|
|
cmd.arg = 0;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
cmd.data = &data;
|
|
|
|
data.data = p8;
|
|
data.len = 8;
|
|
data.flags = MMC_DATA_WRITE;
|
|
mmc_wait_for_cmd(sc, &cmd, 0);
|
|
|
|
cmd.opcode = MMC_BUSTEST_R;
|
|
cmd.arg = 0;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
cmd.data = &data;
|
|
|
|
data.data = buf;
|
|
data.len = 8;
|
|
data.flags = MMC_DATA_READ;
|
|
err = mmc_wait_for_cmd(sc, &cmd, 0);
|
|
|
|
mmcbr_set_bus_width(sc->dev, bus_width_1);
|
|
mmcbr_update_ios(sc->dev);
|
|
|
|
if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0)
|
|
return (bus_width_8);
|
|
}
|
|
|
|
if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) {
|
|
mmcbr_set_bus_width(sc->dev, bus_width_4);
|
|
mmcbr_update_ios(sc->dev);
|
|
|
|
cmd.opcode = MMC_BUSTEST_W;
|
|
cmd.arg = 0;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
cmd.data = &data;
|
|
|
|
data.data = p4;
|
|
data.len = 4;
|
|
data.flags = MMC_DATA_WRITE;
|
|
mmc_wait_for_cmd(sc, &cmd, 0);
|
|
|
|
cmd.opcode = MMC_BUSTEST_R;
|
|
cmd.arg = 0;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
cmd.data = &data;
|
|
|
|
data.data = buf;
|
|
data.len = 4;
|
|
data.flags = MMC_DATA_READ;
|
|
err = mmc_wait_for_cmd(sc, &cmd, 0);
|
|
|
|
mmcbr_set_bus_width(sc->dev, bus_width_1);
|
|
mmcbr_update_ios(sc->dev);
|
|
|
|
if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0)
|
|
return (bus_width_4);
|
|
}
|
|
return (bus_width_1);
|
|
}
|
|
|
|
static uint32_t
|
|
mmc_get_bits(uint32_t *bits, int bit_len, int start, int size)
|
|
{
|
|
const int i = (bit_len / 32) - (start / 32) - 1;
|
|
const int shift = start & 31;
|
|
uint32_t retval = bits[i] >> shift;
|
|
if (size + shift > 32)
|
|
retval |= bits[i - 1] << (32 - shift);
|
|
return (retval & ((1 << size) - 1));
|
|
}
|
|
|
|
static void
|
|
mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid)
|
|
{
|
|
int i;
|
|
|
|
/* There's no version info, so we take it on faith */
|
|
memset(cid, 0, sizeof(*cid));
|
|
cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
|
|
cid->oid = mmc_get_bits(raw_cid, 128, 104, 16);
|
|
for (i = 0; i < 5; i++)
|
|
cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
|
|
cid->pnm[5] = 0;
|
|
cid->prv = mmc_get_bits(raw_cid, 128, 56, 8);
|
|
cid->psn = mmc_get_bits(raw_cid, 128, 24, 32);
|
|
cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000;
|
|
cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4);
|
|
}
|
|
|
|
static void
|
|
mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid)
|
|
{
|
|
int i;
|
|
|
|
/* There's no version info, so we take it on faith */
|
|
memset(cid, 0, sizeof(*cid));
|
|
cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
|
|
cid->oid = mmc_get_bits(raw_cid, 128, 104, 8);
|
|
for (i = 0; i < 6; i++)
|
|
cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
|
|
cid->pnm[6] = 0;
|
|
cid->prv = mmc_get_bits(raw_cid, 128, 48, 8);
|
|
cid->psn = mmc_get_bits(raw_cid, 128, 16, 32);
|
|
cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4);
|
|
cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997;
|
|
}
|
|
|
|
static const int exp[8] = {
|
|
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
|
|
};
|
|
static const int mant[16] = {
|
|
10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
|
|
};
|
|
static const int cur_min[8] = {
|
|
500, 1000, 5000, 10000, 25000, 35000, 60000, 100000
|
|
};
|
|
static const int cur_max[8] = {
|
|
1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000
|
|
};
|
|
|
|
static void
|
|
mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd)
|
|
{
|
|
int v;
|
|
int m;
|
|
int e;
|
|
|
|
memset(csd, 0, sizeof(*csd));
|
|
csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2);
|
|
if (v == 0) {
|
|
m = mmc_get_bits(raw_csd, 128, 115, 4);
|
|
e = mmc_get_bits(raw_csd, 128, 112, 3);
|
|
csd->tacc = exp[e] * mant[m] + 9 / 10;
|
|
csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
|
|
m = mmc_get_bits(raw_csd, 128, 99, 4);
|
|
e = mmc_get_bits(raw_csd, 128, 96, 3);
|
|
csd->tran_speed = exp[e] * 10000 * mant[m];
|
|
csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
|
|
csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
|
|
csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
|
|
csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
|
|
csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
|
|
csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
|
|
csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
|
|
csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
|
|
csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
|
|
csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
|
|
m = mmc_get_bits(raw_csd, 128, 62, 12);
|
|
e = mmc_get_bits(raw_csd, 128, 47, 3);
|
|
csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
|
|
csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
|
|
csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
|
|
csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
|
|
csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
|
|
csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
|
|
csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
|
|
csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
|
|
} else if (v == 1) {
|
|
m = mmc_get_bits(raw_csd, 128, 115, 4);
|
|
e = mmc_get_bits(raw_csd, 128, 112, 3);
|
|
csd->tacc = exp[e] * mant[m] + 9 / 10;
|
|
csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
|
|
m = mmc_get_bits(raw_csd, 128, 99, 4);
|
|
e = mmc_get_bits(raw_csd, 128, 96, 3);
|
|
csd->tran_speed = exp[e] * 10000 * mant[m];
|
|
csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
|
|
csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
|
|
csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
|
|
csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
|
|
csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
|
|
csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
|
|
csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) *
|
|
512 * 1024;
|
|
csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
|
|
csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
|
|
csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
|
|
csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
|
|
csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
|
|
csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
|
|
csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
|
|
} else
|
|
panic("unknown SD CSD version");
|
|
}
|
|
|
|
static void
|
|
mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd)
|
|
{
|
|
int m;
|
|
int e;
|
|
|
|
memset(csd, 0, sizeof(*csd));
|
|
csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2);
|
|
csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4);
|
|
m = mmc_get_bits(raw_csd, 128, 115, 4);
|
|
e = mmc_get_bits(raw_csd, 128, 112, 3);
|
|
csd->tacc = exp[e] * mant[m] + 9 / 10;
|
|
csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
|
|
m = mmc_get_bits(raw_csd, 128, 99, 4);
|
|
e = mmc_get_bits(raw_csd, 128, 96, 3);
|
|
csd->tran_speed = exp[e] * 10000 * mant[m];
|
|
csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
|
|
csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
|
|
csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
|
|
csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
|
|
csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
|
|
csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
|
|
csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
|
|
csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
|
|
csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
|
|
csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
|
|
m = mmc_get_bits(raw_csd, 128, 62, 12);
|
|
e = mmc_get_bits(raw_csd, 128, 47, 3);
|
|
csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
|
|
csd->erase_blk_en = 0;
|
|
csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) *
|
|
(mmc_get_bits(raw_csd, 128, 37, 5) + 1);
|
|
csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5);
|
|
csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
|
|
csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
|
|
csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
|
|
csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
|
|
}
|
|
|
|
static void
|
|
mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
|
|
{
|
|
unsigned int scr_struct;
|
|
|
|
memset(scr, 0, sizeof(*scr));
|
|
|
|
scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
|
|
if (scr_struct != 0) {
|
|
printf("Unrecognised SCR structure version %d\n",
|
|
scr_struct);
|
|
return;
|
|
}
|
|
scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
|
|
scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
|
|
}
|
|
|
|
static void
|
|
mmc_app_decode_sd_status(uint32_t *raw_sd_status,
|
|
struct mmc_sd_status *sd_status)
|
|
{
|
|
|
|
memset(sd_status, 0, sizeof(*sd_status));
|
|
|
|
sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2);
|
|
sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1);
|
|
sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16);
|
|
sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12);
|
|
sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8);
|
|
sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8);
|
|
sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4);
|
|
sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16);
|
|
sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6);
|
|
sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2);
|
|
}
|
|
|
|
static int
|
|
mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid)
|
|
{
|
|
struct mmc_command cmd;
|
|
int err;
|
|
|
|
cmd.opcode = MMC_ALL_SEND_CID;
|
|
cmd.arg = 0;
|
|
cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
|
|
cmd.data = NULL;
|
|
err = mmc_wait_for_cmd(sc, &cmd, 0);
|
|
memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t));
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcid)
|
|
{
|
|
struct mmc_command cmd;
|
|
int err;
|
|
|
|
cmd.opcode = MMC_SEND_CSD;
|
|
cmd.arg = rca << 16;
|
|
cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
|
|
cmd.data = NULL;
|
|
err = mmc_wait_for_cmd(sc, &cmd, 0);
|
|
memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t));
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr)
|
|
{
|
|
int err;
|
|
struct mmc_command cmd;
|
|
struct mmc_data data;
|
|
|
|
memset(&cmd, 0, sizeof(struct mmc_command));
|
|
memset(&data, 0, sizeof(struct mmc_data));
|
|
|
|
memset(rawscr, 0, 8);
|
|
cmd.opcode = ACMD_SEND_SCR;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
cmd.arg = 0;
|
|
cmd.data = &data;
|
|
|
|
data.data = rawscr;
|
|
data.len = 8;
|
|
data.flags = MMC_DATA_READ;
|
|
|
|
err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
|
|
rawscr[0] = be32toh(rawscr[0]);
|
|
rawscr[1] = be32toh(rawscr[1]);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd)
|
|
{
|
|
int err;
|
|
struct mmc_command cmd;
|
|
struct mmc_data data;
|
|
|
|
memset(&cmd, 0, sizeof(struct mmc_command));
|
|
memset(&data, 0, sizeof(struct mmc_data));
|
|
|
|
memset(rawextcsd, 0, 512);
|
|
cmd.opcode = MMC_SEND_EXT_CSD;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
cmd.arg = 0;
|
|
cmd.data = &data;
|
|
|
|
data.data = rawextcsd;
|
|
data.len = 512;
|
|
data.flags = MMC_DATA_READ;
|
|
|
|
err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus)
|
|
{
|
|
int err, i;
|
|
struct mmc_command cmd;
|
|
struct mmc_data data;
|
|
|
|
memset(&cmd, 0, sizeof(struct mmc_command));
|
|
memset(&data, 0, sizeof(struct mmc_data));
|
|
|
|
memset(rawsdstatus, 0, 64);
|
|
cmd.opcode = ACMD_SD_STATUS;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
cmd.arg = 0;
|
|
cmd.data = &data;
|
|
|
|
data.data = rawsdstatus;
|
|
data.len = 64;
|
|
data.flags = MMC_DATA_READ;
|
|
|
|
err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
|
|
for (i = 0; i < 16; i++)
|
|
rawsdstatus[i] = be32toh(rawsdstatus[i]);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp)
|
|
{
|
|
struct mmc_command cmd;
|
|
int err;
|
|
|
|
cmd.opcode = MMC_SET_RELATIVE_ADDR;
|
|
cmd.arg = resp << 16;
|
|
cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
|
|
cmd.data = NULL;
|
|
err = mmc_wait_for_cmd(sc, &cmd, 0);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp)
|
|
{
|
|
struct mmc_command cmd;
|
|
int err;
|
|
|
|
cmd.opcode = SD_SEND_RELATIVE_ADDR;
|
|
cmd.arg = 0;
|
|
cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
|
|
cmd.data = NULL;
|
|
err = mmc_wait_for_cmd(sc, &cmd, 0);
|
|
*resp = cmd.resp[0];
|
|
return (err);
|
|
}
|
|
|
|
static void
|
|
mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard)
|
|
{
|
|
device_printf(dev, "Card at relative address %d%s:\n",
|
|
ivar->rca, newcard ? " added" : "");
|
|
device_printf(dev, " card: %s%s (0x%x/0x%x/\"%s\" rev %d.%d "
|
|
"m/d %02d.%04d s/n %08x)\n",
|
|
ivar->mode == mode_sd ? "SD" : "MMC",
|
|
ivar->high_cap ? " High Capacity" : "",
|
|
ivar->cid.mid, ivar->cid.oid,
|
|
ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f,
|
|
ivar->cid.mdt_month, ivar->cid.mdt_year, ivar->cid.psn);
|
|
device_printf(dev, " bus: %ubit, %uMHz%s\n",
|
|
(ivar->bus_width == bus_width_1 ? 1 :
|
|
(ivar->bus_width == bus_width_4 ? 4 : 8)),
|
|
(ivar->timing == bus_timing_hs ?
|
|
ivar->hs_tran_speed : ivar->tran_speed) / 1000000,
|
|
ivar->timing == bus_timing_hs ? ", high speed timing" : "");
|
|
device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n",
|
|
ivar->sec_count, ivar->erase_sector,
|
|
ivar->read_only ? ", read-only" : "");
|
|
}
|
|
|
|
static void
|
|
mmc_discover_cards(struct mmc_softc *sc)
|
|
{
|
|
struct mmc_ivars *ivar = NULL;
|
|
device_t *devlist;
|
|
int err, i, devcount, newcard;
|
|
uint32_t raw_cid[4];
|
|
uint32_t resp, sec_count;
|
|
device_t child;
|
|
uint16_t rca = 2;
|
|
u_char switch_res[64];
|
|
|
|
if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev, "Probing cards\n");
|
|
while (1) {
|
|
err = mmc_all_send_cid(sc, raw_cid);
|
|
if (err == MMC_ERR_TIMEOUT)
|
|
break;
|
|
if (err != MMC_ERR_NONE) {
|
|
device_printf(sc->dev, "Error reading CID %d\n", err);
|
|
break;
|
|
}
|
|
newcard = 1;
|
|
if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
|
|
return;
|
|
for (i = 0; i < devcount; i++) {
|
|
ivar = device_get_ivars(devlist[i]);
|
|
if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) {
|
|
newcard = 0;
|
|
break;
|
|
}
|
|
}
|
|
free(devlist, M_TEMP);
|
|
if (bootverbose || mmc_debug) {
|
|
device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n",
|
|
newcard ? "New c" : "C",
|
|
raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]);
|
|
}
|
|
if (newcard) {
|
|
ivar = malloc(sizeof(struct mmc_ivars), M_DEVBUF,
|
|
M_WAITOK | M_ZERO);
|
|
if (!ivar)
|
|
return;
|
|
memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid));
|
|
}
|
|
if (mmcbr_get_ro(sc->dev))
|
|
ivar->read_only = 1;
|
|
ivar->bus_width = bus_width_1;
|
|
ivar->timing = bus_timing_normal;
|
|
ivar->mode = mmcbr_get_mode(sc->dev);
|
|
if (ivar->mode == mode_sd) {
|
|
mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid);
|
|
mmc_send_relative_addr(sc, &resp);
|
|
ivar->rca = resp >> 16;
|
|
/* Get card CSD. */
|
|
mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
|
|
mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd);
|
|
ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
|
|
if (ivar->csd.csd_structure > 0)
|
|
ivar->high_cap = 1;
|
|
ivar->tran_speed = ivar->csd.tran_speed;
|
|
ivar->erase_sector = ivar->csd.erase_sector *
|
|
ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
|
|
/* Get card SCR. Card must be selected to fetch it. */
|
|
mmc_select_card(sc, ivar->rca);
|
|
mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr);
|
|
mmc_app_decode_scr(ivar->raw_scr, &ivar->scr);
|
|
/* Get card switch capabilities (command class 10). */
|
|
if ((ivar->scr.sda_vsn >= 1) &&
|
|
(ivar->csd.ccc & (1<<10))) {
|
|
mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK,
|
|
SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE,
|
|
switch_res);
|
|
if (switch_res[13] & 2) {
|
|
ivar->timing = bus_timing_hs;
|
|
ivar->hs_tran_speed = SD_MAX_HS;
|
|
}
|
|
}
|
|
mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status);
|
|
mmc_app_decode_sd_status(ivar->raw_sd_status,
|
|
&ivar->sd_status);
|
|
if (ivar->sd_status.au_size != 0) {
|
|
ivar->erase_sector =
|
|
16 << ivar->sd_status.au_size;
|
|
}
|
|
mmc_select_card(sc, 0);
|
|
/* Find max supported bus width. */
|
|
if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) &&
|
|
(ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4))
|
|
ivar->bus_width = bus_width_4;
|
|
if (bootverbose || mmc_debug)
|
|
mmc_log_card(sc->dev, ivar, newcard);
|
|
if (newcard) {
|
|
/* Add device. */
|
|
child = device_add_child(sc->dev, NULL, -1);
|
|
device_set_ivars(child, ivar);
|
|
}
|
|
return;
|
|
}
|
|
mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid);
|
|
ivar->rca = rca++;
|
|
mmc_set_relative_addr(sc, ivar->rca);
|
|
/* Get card CSD. */
|
|
mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
|
|
mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd);
|
|
ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
|
|
ivar->tran_speed = ivar->csd.tran_speed;
|
|
ivar->erase_sector = ivar->csd.erase_sector *
|
|
ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
|
|
/* Only MMC >= 4.x cards support EXT_CSD. */
|
|
if (ivar->csd.spec_vers >= 4) {
|
|
/* Card must be selected to fetch EXT_CSD. */
|
|
mmc_select_card(sc, ivar->rca);
|
|
mmc_send_ext_csd(sc, ivar->raw_ext_csd);
|
|
/* Handle extended capacity from EXT_CSD */
|
|
sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] +
|
|
(ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
|
|
(ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
|
|
(ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
|
|
if (sec_count != 0) {
|
|
ivar->sec_count = sec_count;
|
|
ivar->high_cap = 1;
|
|
}
|
|
/* Get card speed in high speed mode. */
|
|
ivar->timing = bus_timing_hs;
|
|
if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
|
|
& EXT_CSD_CARD_TYPE_52)
|
|
ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS;
|
|
else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
|
|
& EXT_CSD_CARD_TYPE_26)
|
|
ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS;
|
|
else
|
|
ivar->hs_tran_speed = ivar->tran_speed;
|
|
/* Find max supported bus width. */
|
|
ivar->bus_width = mmc_test_bus_width(sc);
|
|
mmc_select_card(sc, 0);
|
|
/* Handle HC erase sector size. */
|
|
if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) {
|
|
ivar->erase_sector = 1024 *
|
|
ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE];
|
|
mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_ERASE_GRP_DEF, 1);
|
|
}
|
|
} else {
|
|
ivar->bus_width = bus_width_1;
|
|
ivar->timing = bus_timing_normal;
|
|
}
|
|
if (bootverbose || mmc_debug)
|
|
mmc_log_card(sc->dev, ivar, newcard);
|
|
if (newcard) {
|
|
/* Add device. */
|
|
child = device_add_child(sc->dev, NULL, -1);
|
|
device_set_ivars(child, ivar);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
mmc_rescan_cards(struct mmc_softc *sc)
|
|
{
|
|
struct mmc_ivars *ivar = NULL;
|
|
device_t *devlist;
|
|
int err, i, devcount;
|
|
|
|
if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
|
|
return;
|
|
for (i = 0; i < devcount; i++) {
|
|
ivar = device_get_ivars(devlist[i]);
|
|
if (mmc_select_card(sc, ivar->rca)) {
|
|
if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev, "Card at relative address %d lost.\n",
|
|
ivar->rca);
|
|
device_delete_child(sc->dev, devlist[i]);
|
|
free(ivar, M_DEVBUF);
|
|
}
|
|
}
|
|
free(devlist, M_TEMP);
|
|
mmc_select_card(sc, 0);
|
|
}
|
|
|
|
static int
|
|
mmc_delete_cards(struct mmc_softc *sc)
|
|
{
|
|
struct mmc_ivars *ivar;
|
|
device_t *devlist;
|
|
int err, i, devcount;
|
|
|
|
if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
|
|
return (err);
|
|
for (i = 0; i < devcount; i++) {
|
|
ivar = device_get_ivars(devlist[i]);
|
|
if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev, "Card at relative address %d deleted.\n",
|
|
ivar->rca);
|
|
device_delete_child(sc->dev, devlist[i]);
|
|
free(ivar, M_DEVBUF);
|
|
}
|
|
free(devlist, M_TEMP);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
mmc_go_discovery(struct mmc_softc *sc)
|
|
{
|
|
uint32_t ocr;
|
|
device_t dev;
|
|
int err;
|
|
|
|
dev = sc->dev;
|
|
if (mmcbr_get_power_mode(dev) != power_on) {
|
|
/*
|
|
* First, try SD modes
|
|
*/
|
|
mmcbr_set_mode(dev, mode_sd);
|
|
mmc_power_up(sc);
|
|
mmcbr_set_bus_mode(dev, pushpull);
|
|
if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev, "Probing bus\n");
|
|
mmc_idle_cards(sc);
|
|
err = mmc_send_if_cond(sc, 1);
|
|
if ((bootverbose || mmc_debug) && err == 0)
|
|
device_printf(sc->dev, "SD 2.0 interface conditions: OK\n");
|
|
if (mmc_send_app_op_cond(sc, err ? 0 : MMC_OCR_CCS, &ocr) !=
|
|
MMC_ERR_NONE) {
|
|
if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev, "SD probe: failed\n");
|
|
/*
|
|
* Failed, try MMC
|
|
*/
|
|
mmcbr_set_mode(dev, mode_mmc);
|
|
if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
|
|
if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev, "MMC probe: failed\n");
|
|
ocr = 0; /* Failed both, powerdown. */
|
|
} else if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev,
|
|
"MMC probe: OK (OCR: 0x%08x)\n", ocr);
|
|
} else if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr);
|
|
|
|
mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr));
|
|
if (mmcbr_get_ocr(dev) != 0)
|
|
mmc_idle_cards(sc);
|
|
} else {
|
|
mmcbr_set_bus_mode(dev, opendrain);
|
|
mmcbr_set_clock(dev, mmcbr_get_f_min(dev));
|
|
mmcbr_update_ios(dev);
|
|
/* XXX recompute vdd based on new cards? */
|
|
}
|
|
/*
|
|
* Make sure that we have a mutually agreeable voltage to at least
|
|
* one card on the bus.
|
|
*/
|
|
if (bootverbose || mmc_debug)
|
|
device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev));
|
|
if (mmcbr_get_ocr(dev) == 0) {
|
|
mmc_delete_cards(sc);
|
|
mmc_power_down(sc);
|
|
return;
|
|
}
|
|
/*
|
|
* Reselect the cards after we've idled them above.
|
|
*/
|
|
if (mmcbr_get_mode(dev) == mode_sd) {
|
|
err = mmc_send_if_cond(sc, 1);
|
|
mmc_send_app_op_cond(sc,
|
|
(err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL);
|
|
} else
|
|
mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL);
|
|
mmc_discover_cards(sc);
|
|
mmc_rescan_cards(sc);
|
|
|
|
mmcbr_set_bus_mode(dev, pushpull);
|
|
mmcbr_update_ios(dev);
|
|
mmc_calculate_clock(sc);
|
|
bus_generic_attach(dev);
|
|
/* mmc_update_children_sysctl(dev);*/
|
|
}
|
|
|
|
static int
|
|
mmc_calculate_clock(struct mmc_softc *sc)
|
|
{
|
|
int max_dtr, max_hs_dtr, max_timing;
|
|
int nkid, i, f_min, f_max;
|
|
device_t *kids;
|
|
struct mmc_ivars *ivar;
|
|
|
|
f_min = mmcbr_get_f_min(sc->dev);
|
|
f_max = mmcbr_get_f_max(sc->dev);
|
|
max_dtr = max_hs_dtr = f_max;
|
|
if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED))
|
|
max_timing = bus_timing_hs;
|
|
else
|
|
max_timing = bus_timing_normal;
|
|
if (device_get_children(sc->dev, &kids, &nkid) != 0)
|
|
panic("can't get children");
|
|
for (i = 0; i < nkid; i++) {
|
|
ivar = device_get_ivars(kids[i]);
|
|
if (ivar->timing < max_timing)
|
|
max_timing = ivar->timing;
|
|
if (ivar->tran_speed < max_dtr)
|
|
max_dtr = ivar->tran_speed;
|
|
if (ivar->hs_tran_speed < max_hs_dtr)
|
|
max_hs_dtr = ivar->hs_tran_speed;
|
|
}
|
|
for (i = 0; i < nkid; i++) {
|
|
ivar = device_get_ivars(kids[i]);
|
|
if (ivar->timing == bus_timing_normal)
|
|
continue;
|
|
mmc_select_card(sc, ivar->rca);
|
|
mmc_set_timing(sc, max_timing);
|
|
}
|
|
mmc_select_card(sc, 0);
|
|
free(kids, M_TEMP);
|
|
if (max_timing == bus_timing_hs)
|
|
max_dtr = max_hs_dtr;
|
|
if (bootverbose || mmc_debug) {
|
|
device_printf(sc->dev,
|
|
"setting transfer rate to %d.%03dMHz%s\n",
|
|
max_dtr / 1000000, (max_dtr / 1000) % 1000,
|
|
max_timing == bus_timing_hs ? " (high speed timing)" : "");
|
|
}
|
|
mmcbr_set_timing(sc->dev, max_timing);
|
|
mmcbr_set_clock(sc->dev, max_dtr);
|
|
mmcbr_update_ios(sc->dev);
|
|
return max_dtr;
|
|
}
|
|
|
|
static void
|
|
mmc_scan(struct mmc_softc *sc)
|
|
{
|
|
device_t dev = sc->dev;
|
|
|
|
mmc_acquire_bus(dev, dev);
|
|
mmc_go_discovery(sc);
|
|
mmc_release_bus(dev, dev);
|
|
}
|
|
|
|
static int
|
|
mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result)
|
|
{
|
|
struct mmc_ivars *ivar = device_get_ivars(child);
|
|
|
|
switch (which) {
|
|
default:
|
|
return (EINVAL);
|
|
case MMC_IVAR_DSR_IMP:
|
|
*(int *)result = ivar->csd.dsr_imp;
|
|
break;
|
|
case MMC_IVAR_MEDIA_SIZE:
|
|
*(off_t *)result = ivar->sec_count;
|
|
break;
|
|
case MMC_IVAR_RCA:
|
|
*(int *)result = ivar->rca;
|
|
break;
|
|
case MMC_IVAR_SECTOR_SIZE:
|
|
*(int *)result = MMC_SECTOR_SIZE;
|
|
break;
|
|
case MMC_IVAR_TRAN_SPEED:
|
|
*(int *)result = mmcbr_get_clock(bus);
|
|
break;
|
|
case MMC_IVAR_READ_ONLY:
|
|
*(int *)result = ivar->read_only;
|
|
break;
|
|
case MMC_IVAR_HIGH_CAP:
|
|
*(int *)result = ivar->high_cap;
|
|
break;
|
|
case MMC_IVAR_CARD_TYPE:
|
|
*(int *)result = ivar->mode;
|
|
break;
|
|
case MMC_IVAR_BUS_WIDTH:
|
|
*(int *)result = ivar->bus_width;
|
|
break;
|
|
case MMC_IVAR_ERASE_SECTOR:
|
|
*(int *)result = ivar->erase_sector;
|
|
break;
|
|
case MMC_IVAR_MAX_DATA:
|
|
*(int *)result = mmcbr_get_max_data(bus);
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value)
|
|
{
|
|
/*
|
|
* None are writable ATM
|
|
*/
|
|
return (EINVAL);
|
|
}
|
|
|
|
|
|
static void
|
|
mmc_delayed_attach(void *xsc)
|
|
{
|
|
struct mmc_softc *sc = xsc;
|
|
|
|
mmc_scan(sc);
|
|
config_intrhook_disestablish(&sc->config_intrhook);
|
|
}
|
|
|
|
static device_method_t mmc_methods[] = {
|
|
/* device_if */
|
|
DEVMETHOD(device_probe, mmc_probe),
|
|
DEVMETHOD(device_attach, mmc_attach),
|
|
DEVMETHOD(device_detach, mmc_detach),
|
|
DEVMETHOD(device_suspend, mmc_suspend),
|
|
DEVMETHOD(device_resume, mmc_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_read_ivar, mmc_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, mmc_write_ivar),
|
|
|
|
/* MMC Bus interface */
|
|
DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request),
|
|
DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus),
|
|
DEVMETHOD(mmcbus_release_bus, mmc_release_bus),
|
|
|
|
{0, 0},
|
|
};
|
|
|
|
static driver_t mmc_driver = {
|
|
"mmc",
|
|
mmc_methods,
|
|
sizeof(struct mmc_softc),
|
|
};
|
|
static devclass_t mmc_devclass;
|
|
|
|
|
|
DRIVER_MODULE(mmc, at91_mci, mmc_driver, mmc_devclass, NULL, NULL);
|
|
DRIVER_MODULE(mmc, sdhci, mmc_driver, mmc_devclass, NULL, NULL);
|