1569 lines
43 KiB
C
1569 lines
43 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2006 Bernd Walter. All rights reserved.
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* Copyright (c) 2006 M. Warner Losh <imp@FreeBSD.org>
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* Copyright (c) 2017 Marius Strobl <marius@FreeBSD.org>
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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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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/endian.h>
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#include <sys/fcntl.h>
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#include <sys/ioccom.h>
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#include <sys/kernel.h>
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#include <sys/kthread.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/priv.h>
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#include <sys/slicer.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <geom/geom.h>
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#include <geom/geom_disk.h>
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#include <dev/mmc/bridge.h>
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#include <dev/mmc/mmc_ioctl.h>
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#include <dev/mmc/mmc_subr.h>
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#include <dev/mmc/mmcbrvar.h>
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#include <dev/mmc/mmcreg.h>
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#include <dev/mmc/mmcvar.h>
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#include "mmcbus_if.h"
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#define MMCSD_CMD_RETRIES 5
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#define MMCSD_FMT_BOOT "mmcsd%dboot"
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#define MMCSD_FMT_GP "mmcsd%dgp"
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#define MMCSD_FMT_RPMB "mmcsd%drpmb"
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#define MMCSD_LABEL_ENH "enh"
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#define MMCSD_PART_NAMELEN (16 + 1)
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struct mmcsd_softc;
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struct mmcsd_part {
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struct mtx disk_mtx;
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struct mtx ioctl_mtx;
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struct mmcsd_softc *sc;
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struct disk *disk;
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struct proc *p;
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struct bio_queue_head bio_queue;
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daddr_t eblock, eend; /* Range remaining after the last erase. */
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u_int cnt;
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u_int type;
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int running;
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int suspend;
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int ioctl;
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bool ro;
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char name[MMCSD_PART_NAMELEN];
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};
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struct mmcsd_softc {
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device_t dev;
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device_t mmcbus;
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struct mmcsd_part *part[MMC_PART_MAX];
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enum mmc_card_mode mode;
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u_int max_data; /* Maximum data size [blocks] */
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u_int erase_sector; /* Device native erase sector size [blocks] */
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uint8_t high_cap; /* High Capacity device (block addressed) */
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uint8_t part_curr; /* Partition currently switched to */
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uint8_t ext_csd[MMC_EXTCSD_SIZE];
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uint16_t rca;
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uint32_t flags;
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#define MMCSD_INAND_CMD38 0x0001
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#define MMCSD_USE_TRIM 0x0002
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#define MMCSD_FLUSH_CACHE 0x0004
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#define MMCSD_DIRTY 0x0008
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uint32_t cmd6_time; /* Generic switch timeout [us] */
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uint32_t part_time; /* Partition switch timeout [us] */
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off_t enh_base; /* Enhanced user data area slice base ... */
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off_t enh_size; /* ... and size [bytes] */
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int log_count;
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struct timeval log_time;
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struct cdev *rpmb_dev;
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};
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static const char *errmsg[] =
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{
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"None",
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"Timeout",
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"Bad CRC",
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"Fifo",
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"Failed",
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"Invalid",
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"NO MEMORY"
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};
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static SYSCTL_NODE(_hw, OID_AUTO, mmcsd, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL,
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"mmcsd driver");
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static int mmcsd_cache = 1;
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SYSCTL_INT(_hw_mmcsd, OID_AUTO, cache, CTLFLAG_RDTUN, &mmcsd_cache, 0,
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"Device R/W cache enabled if present");
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#define LOG_PPS 5 /* Log no more than 5 errors per second. */
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/* bus entry points */
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static int mmcsd_attach(device_t dev);
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static int mmcsd_detach(device_t dev);
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static int mmcsd_probe(device_t dev);
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static int mmcsd_shutdown(device_t dev);
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/* disk routines */
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static int mmcsd_close(struct disk *dp);
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static int mmcsd_dump(void *arg, void *virtual, off_t offset, size_t length);
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static int mmcsd_getattr(struct bio *);
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static int mmcsd_ioctl_disk(struct disk *disk, u_long cmd, void *data,
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int fflag, struct thread *td);
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static void mmcsd_strategy(struct bio *bp);
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static void mmcsd_task(void *arg);
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/* RMPB cdev interface */
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static int mmcsd_ioctl_rpmb(struct cdev *dev, u_long cmd, caddr_t data,
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int fflag, struct thread *td);
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static void mmcsd_add_part(struct mmcsd_softc *sc, u_int type,
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const char *name, u_int cnt, off_t media_size, bool ro);
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static int mmcsd_bus_bit_width(device_t dev);
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static daddr_t mmcsd_delete(struct mmcsd_part *part, struct bio *bp);
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static const char *mmcsd_errmsg(int e);
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static int mmcsd_flush_cache(struct mmcsd_softc *sc);
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static int mmcsd_ioctl(struct mmcsd_part *part, u_long cmd, void *data,
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int fflag, struct thread *td);
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static int mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic,
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int fflag);
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static uintmax_t mmcsd_pretty_size(off_t size, char *unit);
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static daddr_t mmcsd_rw(struct mmcsd_part *part, struct bio *bp);
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static int mmcsd_set_blockcount(struct mmcsd_softc *sc, u_int count, bool rel);
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static int mmcsd_slicer(device_t dev, const char *provider,
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struct flash_slice *slices, int *nslices);
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static int mmcsd_switch_part(device_t bus, device_t dev, uint16_t rca,
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u_int part);
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#define MMCSD_DISK_LOCK(_part) mtx_lock(&(_part)->disk_mtx)
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#define MMCSD_DISK_UNLOCK(_part) mtx_unlock(&(_part)->disk_mtx)
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#define MMCSD_DISK_LOCK_INIT(_part) \
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mtx_init(&(_part)->disk_mtx, (_part)->name, "mmcsd disk", MTX_DEF)
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#define MMCSD_DISK_LOCK_DESTROY(_part) mtx_destroy(&(_part)->disk_mtx);
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#define MMCSD_DISK_ASSERT_LOCKED(_part) \
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mtx_assert(&(_part)->disk_mtx, MA_OWNED);
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#define MMCSD_DISK_ASSERT_UNLOCKED(_part) \
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mtx_assert(&(_part)->disk_mtx, MA_NOTOWNED);
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#define MMCSD_IOCTL_LOCK(_part) mtx_lock(&(_part)->ioctl_mtx)
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#define MMCSD_IOCTL_UNLOCK(_part) mtx_unlock(&(_part)->ioctl_mtx)
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#define MMCSD_IOCTL_LOCK_INIT(_part) \
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mtx_init(&(_part)->ioctl_mtx, (_part)->name, "mmcsd IOCTL", MTX_DEF)
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#define MMCSD_IOCTL_LOCK_DESTROY(_part) mtx_destroy(&(_part)->ioctl_mtx);
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#define MMCSD_IOCTL_ASSERT_LOCKED(_part) \
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mtx_assert(&(_part)->ioctl_mtx, MA_OWNED);
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#define MMCSD_IOCLT_ASSERT_UNLOCKED(_part) \
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mtx_assert(&(_part)->ioctl_mtx, MA_NOTOWNED);
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static int
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mmcsd_probe(device_t dev)
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{
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device_quiet(dev);
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device_set_desc(dev, "MMC/SD Memory Card");
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return (0);
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}
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static int
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mmcsd_attach(device_t dev)
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{
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device_t mmcbus;
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struct mmcsd_softc *sc;
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const uint8_t *ext_csd;
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off_t erase_size, sector_size, size, wp_size;
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uintmax_t bytes;
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int err, i;
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uint32_t quirks;
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uint8_t rev;
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bool comp, ro;
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char unit[2];
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sc = device_get_softc(dev);
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sc->dev = dev;
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sc->mmcbus = mmcbus = device_get_parent(dev);
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sc->mode = mmc_get_card_type(dev);
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/*
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* Note that in principle with an SDHCI-like re-tuning implementation,
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* the maximum data size can change at runtime due to a device removal/
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* insertion that results in switches to/from a transfer mode involving
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* re-tuning, iff there are multiple devices on a given bus. Until now
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* mmc(4) lacks support for rescanning already attached buses, however,
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* and sdhci(4) to date has no support for shared buses in the first
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* place either.
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*/
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sc->max_data = mmc_get_max_data(dev);
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sc->high_cap = mmc_get_high_cap(dev);
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sc->rca = mmc_get_rca(dev);
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sc->cmd6_time = mmc_get_cmd6_timeout(dev);
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quirks = mmc_get_quirks(dev);
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/* Only MMC >= 4.x devices support EXT_CSD. */
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if (mmc_get_spec_vers(dev) >= 4) {
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MMCBUS_ACQUIRE_BUS(mmcbus, dev);
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err = mmc_send_ext_csd(mmcbus, dev, sc->ext_csd);
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MMCBUS_RELEASE_BUS(mmcbus, dev);
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if (err != MMC_ERR_NONE) {
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device_printf(dev, "Error reading EXT_CSD %s\n",
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mmcsd_errmsg(err));
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return (ENXIO);
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}
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}
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ext_csd = sc->ext_csd;
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if ((quirks & MMC_QUIRK_INAND_CMD38) != 0) {
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if (mmc_get_spec_vers(dev) < 4) {
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device_printf(dev,
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"MMC_QUIRK_INAND_CMD38 set but no EXT_CSD\n");
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return (EINVAL);
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}
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sc->flags |= MMCSD_INAND_CMD38;
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}
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/*
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* EXT_CSD_SEC_FEATURE_SUPPORT_GB_CL_EN denotes support for both
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* insecure and secure TRIM.
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*/
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if ((ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT] &
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EXT_CSD_SEC_FEATURE_SUPPORT_GB_CL_EN) != 0 &&
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(quirks & MMC_QUIRK_BROKEN_TRIM) == 0) {
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if (bootverbose)
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device_printf(dev, "taking advantage of TRIM\n");
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sc->flags |= MMCSD_USE_TRIM;
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sc->erase_sector = 1;
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} else
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sc->erase_sector = mmc_get_erase_sector(dev);
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/*
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* Enhanced user data area and general purpose partitions are only
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* supported in revision 1.4 (EXT_CSD_REV == 4) and later, the RPMB
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* partition in revision 1.5 (MMC v4.41, EXT_CSD_REV == 5) and later.
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*/
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rev = ext_csd[EXT_CSD_REV];
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/*
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* With revision 1.5 (MMC v4.5, EXT_CSD_REV == 6) and later, take
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* advantage of the device R/W cache if present and useage is not
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* disabled.
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*/
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if (rev >= 6 && mmcsd_cache != 0) {
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size = le32dec(&ext_csd[EXT_CSD_CACHE_SIZE]);
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if (bootverbose)
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device_printf(dev, "cache size %juKB\n", size);
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if (size > 0) {
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MMCBUS_ACQUIRE_BUS(mmcbus, dev);
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err = mmc_switch(mmcbus, dev, sc->rca,
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EXT_CSD_CMD_SET_NORMAL, EXT_CSD_CACHE_CTRL,
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EXT_CSD_CACHE_CTRL_CACHE_EN, sc->cmd6_time, true);
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MMCBUS_RELEASE_BUS(mmcbus, dev);
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if (err != MMC_ERR_NONE)
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device_printf(dev, "failed to enable cache\n");
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else
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sc->flags |= MMCSD_FLUSH_CACHE;
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}
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}
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/*
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* Ignore user-creatable enhanced user data area and general purpose
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* partitions partitions as long as partitioning hasn't been finished.
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*/
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comp = (ext_csd[EXT_CSD_PART_SET] & EXT_CSD_PART_SET_COMPLETED) != 0;
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/*
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* Add enhanced user data area slice, unless it spans the entirety of
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* the user data area. The enhanced area is of a multiple of high
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* capacity write protect groups ((ERASE_GRP_SIZE + HC_WP_GRP_SIZE) *
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* 512 KB) and its offset given in either sectors or bytes, depending
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* on whether it's a high capacity device or not.
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* NB: The slicer and its slices need to be registered before adding
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* the disk for the corresponding user data area as re-tasting is
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* racy.
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*/
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sector_size = mmc_get_sector_size(dev);
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size = ext_csd[EXT_CSD_ENH_SIZE_MULT] +
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(ext_csd[EXT_CSD_ENH_SIZE_MULT + 1] << 8) +
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(ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16);
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if (rev >= 4 && comp == TRUE && size > 0 &&
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(ext_csd[EXT_CSD_PART_SUPPORT] &
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EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 &&
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(ext_csd[EXT_CSD_PART_ATTR] & (EXT_CSD_PART_ATTR_ENH_USR)) != 0) {
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erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 *
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MMC_SECTOR_SIZE;
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wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
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size *= erase_size * wp_size;
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if (size != mmc_get_media_size(dev) * sector_size) {
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sc->enh_size = size;
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sc->enh_base =
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le32dec(&ext_csd[EXT_CSD_ENH_START_ADDR]) *
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(sc->high_cap == 0 ? MMC_SECTOR_SIZE : 1);
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} else if (bootverbose)
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device_printf(dev,
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"enhanced user data area spans entire device\n");
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}
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/*
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* Add default partition. This may be the only one or the user
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* data area in case partitions are supported.
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*/
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ro = mmc_get_read_only(dev);
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mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_DEFAULT, "mmcsd",
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device_get_unit(dev), mmc_get_media_size(dev) * sector_size, ro);
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if (mmc_get_spec_vers(dev) < 3)
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return (0);
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/* Belatedly announce enhanced user data slice. */
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if (sc->enh_size != 0) {
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bytes = mmcsd_pretty_size(size, unit);
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printf(FLASH_SLICES_FMT ": %ju%sB enhanced user data area "
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"slice offset 0x%jx at %s\n", device_get_nameunit(dev),
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MMCSD_LABEL_ENH, bytes, unit, (uintmax_t)sc->enh_base,
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device_get_nameunit(dev));
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}
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/*
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* Determine partition switch timeout (provided in units of 10 ms)
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* and ensure it's at least 300 ms as some eMMC chips lie.
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*/
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sc->part_time = max(ext_csd[EXT_CSD_PART_SWITCH_TO] * 10 * 1000,
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300 * 1000);
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/* Add boot partitions, which are of a fixed multiple of 128 KB. */
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size = ext_csd[EXT_CSD_BOOT_SIZE_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE;
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if (size > 0 && (mmcbr_get_caps(mmcbus) & MMC_CAP_BOOT_NOACC) == 0) {
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mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_BOOT0,
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MMCSD_FMT_BOOT, 0, size,
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ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] &
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EXT_CSD_BOOT_WP_STATUS_BOOT0_MASK) != 0));
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mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_BOOT1,
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MMCSD_FMT_BOOT, 1, size,
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ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] &
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EXT_CSD_BOOT_WP_STATUS_BOOT1_MASK) != 0));
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}
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/* Add RPMB partition, which also is of a fixed multiple of 128 KB. */
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size = ext_csd[EXT_CSD_RPMB_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE;
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if (rev >= 5 && size > 0)
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mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_RPMB,
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MMCSD_FMT_RPMB, 0, size, ro);
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if (rev <= 3 || comp == FALSE)
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return (0);
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/*
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* Add general purpose partitions, which are of a multiple of high
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* capacity write protect groups, too.
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*/
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if ((ext_csd[EXT_CSD_PART_SUPPORT] & EXT_CSD_PART_SUPPORT_EN) != 0) {
|
|
erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 *
|
|
MMC_SECTOR_SIZE;
|
|
wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
|
|
for (i = 0; i < MMC_PART_GP_MAX; i++) {
|
|
size = ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3] +
|
|
(ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 1] << 8) +
|
|
(ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 2] << 16);
|
|
if (size == 0)
|
|
continue;
|
|
mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_GP0 + i,
|
|
MMCSD_FMT_GP, i, size * erase_size * wp_size, ro);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static uintmax_t
|
|
mmcsd_pretty_size(off_t size, char *unit)
|
|
{
|
|
uintmax_t bytes;
|
|
int i;
|
|
|
|
/*
|
|
* Display in most natural units. There's no card < 1MB. However,
|
|
* RPMB partitions occasionally are smaller than that, though. The
|
|
* SD standard goes to 2 GiB due to its reliance on FAT, but the data
|
|
* format supports up to 4 GiB and some card makers push it up to this
|
|
* limit. The SDHC standard only goes to 32 GiB due to FAT32, but the
|
|
* data format supports up to 2 TiB however. 2048 GB isn't too ugly,
|
|
* so we note it in passing here and don't add the code to print TB).
|
|
* Since these cards are sold in terms of MB and GB not MiB and GiB,
|
|
* report them like that. We also round to the nearest unit, since
|
|
* many cards are a few percent short, even of the power of 10 size.
|
|
*/
|
|
bytes = size;
|
|
unit[0] = unit[1] = '\0';
|
|
for (i = 0; i <= 2 && bytes >= 1000; i++) {
|
|
bytes = (bytes + 1000 / 2 - 1) / 1000;
|
|
switch (i) {
|
|
case 0:
|
|
unit[0] = 'k';
|
|
break;
|
|
case 1:
|
|
unit[0] = 'M';
|
|
break;
|
|
case 2:
|
|
unit[0] = 'G';
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return (bytes);
|
|
}
|
|
|
|
static struct cdevsw mmcsd_rpmb_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_name = "mmcsdrpmb",
|
|
.d_ioctl = mmcsd_ioctl_rpmb
|
|
};
|
|
|
|
static void
|
|
mmcsd_add_part(struct mmcsd_softc *sc, u_int type, const char *name, u_int cnt,
|
|
off_t media_size, bool ro)
|
|
{
|
|
struct make_dev_args args;
|
|
device_t dev, mmcbus;
|
|
const char *ext;
|
|
const uint8_t *ext_csd;
|
|
struct mmcsd_part *part;
|
|
struct disk *d;
|
|
uintmax_t bytes;
|
|
u_int gp;
|
|
uint32_t speed;
|
|
uint8_t extattr;
|
|
bool enh;
|
|
char unit[2];
|
|
|
|
dev = sc->dev;
|
|
mmcbus = sc->mmcbus;
|
|
part = sc->part[type] = malloc(sizeof(*part), M_DEVBUF,
|
|
M_WAITOK | M_ZERO);
|
|
part->sc = sc;
|
|
part->cnt = cnt;
|
|
part->type = type;
|
|
part->ro = ro;
|
|
snprintf(part->name, sizeof(part->name), name, device_get_unit(dev));
|
|
|
|
MMCSD_IOCTL_LOCK_INIT(part);
|
|
|
|
/*
|
|
* For the RPMB partition, allow IOCTL access only.
|
|
* NB: If ever attaching RPMB partitions to disk(9), the re-tuning
|
|
* implementation and especially its pausing need to be revisited,
|
|
* because then re-tuning requests may be issued by the IOCTL half
|
|
* of this driver while re-tuning is already paused by the disk(9)
|
|
* one and vice versa.
|
|
*/
|
|
if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) {
|
|
make_dev_args_init(&args);
|
|
args.mda_flags = MAKEDEV_CHECKNAME | MAKEDEV_WAITOK;
|
|
args.mda_devsw = &mmcsd_rpmb_cdevsw;
|
|
args.mda_uid = UID_ROOT;
|
|
args.mda_gid = GID_OPERATOR;
|
|
args.mda_mode = 0640;
|
|
args.mda_si_drv1 = part;
|
|
if (make_dev_s(&args, &sc->rpmb_dev, "%s", part->name) != 0) {
|
|
device_printf(dev, "Failed to make RPMB device\n");
|
|
free(part, M_DEVBUF);
|
|
return;
|
|
}
|
|
} else {
|
|
MMCSD_DISK_LOCK_INIT(part);
|
|
|
|
d = part->disk = disk_alloc();
|
|
d->d_close = mmcsd_close;
|
|
d->d_strategy = mmcsd_strategy;
|
|
d->d_ioctl = mmcsd_ioctl_disk;
|
|
d->d_dump = mmcsd_dump;
|
|
d->d_getattr = mmcsd_getattr;
|
|
d->d_name = part->name;
|
|
d->d_drv1 = part;
|
|
d->d_sectorsize = mmc_get_sector_size(dev);
|
|
d->d_maxsize = sc->max_data * d->d_sectorsize;
|
|
d->d_mediasize = media_size;
|
|
d->d_stripesize = sc->erase_sector * d->d_sectorsize;
|
|
d->d_unit = cnt;
|
|
d->d_flags = DISKFLAG_CANDELETE;
|
|
if ((sc->flags & MMCSD_FLUSH_CACHE) != 0)
|
|
d->d_flags |= DISKFLAG_CANFLUSHCACHE;
|
|
d->d_delmaxsize = mmc_get_erase_sector(dev) * d->d_sectorsize;
|
|
strlcpy(d->d_ident, mmc_get_card_sn_string(dev),
|
|
sizeof(d->d_ident));
|
|
strlcpy(d->d_descr, mmc_get_card_id_string(dev),
|
|
sizeof(d->d_descr));
|
|
d->d_rotation_rate = DISK_RR_NON_ROTATING;
|
|
|
|
disk_create(d, DISK_VERSION);
|
|
bioq_init(&part->bio_queue);
|
|
|
|
part->running = 1;
|
|
kproc_create(&mmcsd_task, part, &part->p, 0, 0,
|
|
"%s%d: mmc/sd card", part->name, cnt);
|
|
}
|
|
|
|
bytes = mmcsd_pretty_size(media_size, unit);
|
|
if (type == EXT_CSD_PART_CONFIG_ACC_DEFAULT) {
|
|
speed = mmcbr_get_clock(mmcbus);
|
|
printf("%s%d: %ju%sB <%s>%s at %s %d.%01dMHz/%dbit/%d-block\n",
|
|
part->name, cnt, bytes, unit, mmc_get_card_id_string(dev),
|
|
ro ? " (read-only)" : "", device_get_nameunit(mmcbus),
|
|
speed / 1000000, (speed / 100000) % 10,
|
|
mmcsd_bus_bit_width(dev), sc->max_data);
|
|
} else if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) {
|
|
printf("%s: %ju%sB partition %d%s at %s\n", part->name, bytes,
|
|
unit, type, ro ? " (read-only)" : "",
|
|
device_get_nameunit(dev));
|
|
} else {
|
|
enh = false;
|
|
ext = NULL;
|
|
extattr = 0;
|
|
if (type >= EXT_CSD_PART_CONFIG_ACC_GP0 &&
|
|
type <= EXT_CSD_PART_CONFIG_ACC_GP3) {
|
|
ext_csd = sc->ext_csd;
|
|
gp = type - EXT_CSD_PART_CONFIG_ACC_GP0;
|
|
if ((ext_csd[EXT_CSD_PART_SUPPORT] &
|
|
EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 &&
|
|
(ext_csd[EXT_CSD_PART_ATTR] &
|
|
(EXT_CSD_PART_ATTR_ENH_GP0 << gp)) != 0)
|
|
enh = true;
|
|
else if ((ext_csd[EXT_CSD_PART_SUPPORT] &
|
|
EXT_CSD_PART_SUPPORT_EXT_ATTR_EN) != 0) {
|
|
extattr = (ext_csd[EXT_CSD_EXT_PART_ATTR +
|
|
(gp / 2)] >> (4 * (gp % 2))) & 0xF;
|
|
switch (extattr) {
|
|
case EXT_CSD_EXT_PART_ATTR_DEFAULT:
|
|
break;
|
|
case EXT_CSD_EXT_PART_ATTR_SYSTEMCODE:
|
|
ext = "system code";
|
|
break;
|
|
case EXT_CSD_EXT_PART_ATTR_NPERSISTENT:
|
|
ext = "non-persistent";
|
|
break;
|
|
default:
|
|
ext = "reserved";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (ext == NULL)
|
|
printf("%s%d: %ju%sB partition %d%s%s at %s\n",
|
|
part->name, cnt, bytes, unit, type, enh ?
|
|
" enhanced" : "", ro ? " (read-only)" : "",
|
|
device_get_nameunit(dev));
|
|
else
|
|
printf("%s%d: %ju%sB partition %d extended 0x%x "
|
|
"(%s)%s at %s\n", part->name, cnt, bytes, unit,
|
|
type, extattr, ext, ro ? " (read-only)" : "",
|
|
device_get_nameunit(dev));
|
|
}
|
|
}
|
|
|
|
static int
|
|
mmcsd_slicer(device_t dev, const char *provider,
|
|
struct flash_slice *slices, int *nslices)
|
|
{
|
|
char name[MMCSD_PART_NAMELEN];
|
|
struct mmcsd_softc *sc;
|
|
struct mmcsd_part *part;
|
|
|
|
*nslices = 0;
|
|
if (slices == NULL)
|
|
return (ENOMEM);
|
|
|
|
sc = device_get_softc(dev);
|
|
if (sc->enh_size == 0)
|
|
return (ENXIO);
|
|
|
|
part = sc->part[EXT_CSD_PART_CONFIG_ACC_DEFAULT];
|
|
snprintf(name, sizeof(name), "%s%d", part->disk->d_name,
|
|
part->disk->d_unit);
|
|
if (strcmp(name, provider) != 0)
|
|
return (ENXIO);
|
|
|
|
*nslices = 1;
|
|
slices[0].base = sc->enh_base;
|
|
slices[0].size = sc->enh_size;
|
|
slices[0].label = MMCSD_LABEL_ENH;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mmcsd_detach(device_t dev)
|
|
{
|
|
struct mmcsd_softc *sc = device_get_softc(dev);
|
|
struct mmcsd_part *part;
|
|
int i;
|
|
|
|
for (i = 0; i < MMC_PART_MAX; i++) {
|
|
part = sc->part[i];
|
|
if (part != NULL) {
|
|
if (part->disk != NULL) {
|
|
MMCSD_DISK_LOCK(part);
|
|
part->suspend = 0;
|
|
if (part->running > 0) {
|
|
/* kill thread */
|
|
part->running = 0;
|
|
wakeup(part);
|
|
/* wait for thread to finish. */
|
|
while (part->running != -1)
|
|
msleep(part, &part->disk_mtx, 0,
|
|
"mmcsd disk detach", 0);
|
|
}
|
|
MMCSD_DISK_UNLOCK(part);
|
|
}
|
|
MMCSD_IOCTL_LOCK(part);
|
|
while (part->ioctl > 0)
|
|
msleep(part, &part->ioctl_mtx, 0,
|
|
"mmcsd IOCTL detach", 0);
|
|
part->ioctl = -1;
|
|
MMCSD_IOCTL_UNLOCK(part);
|
|
}
|
|
}
|
|
|
|
if (sc->rpmb_dev != NULL)
|
|
destroy_dev(sc->rpmb_dev);
|
|
|
|
for (i = 0; i < MMC_PART_MAX; i++) {
|
|
part = sc->part[i];
|
|
if (part != NULL) {
|
|
if (part->disk != NULL) {
|
|
/* Flush the request queue. */
|
|
bioq_flush(&part->bio_queue, NULL, ENXIO);
|
|
/* kill disk */
|
|
disk_destroy(part->disk);
|
|
|
|
MMCSD_DISK_LOCK_DESTROY(part);
|
|
}
|
|
MMCSD_IOCTL_LOCK_DESTROY(part);
|
|
free(part, M_DEVBUF);
|
|
}
|
|
}
|
|
if (mmcsd_flush_cache(sc) != MMC_ERR_NONE)
|
|
device_printf(dev, "failed to flush cache\n");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mmcsd_shutdown(device_t dev)
|
|
{
|
|
struct mmcsd_softc *sc = device_get_softc(dev);
|
|
|
|
if (mmcsd_flush_cache(sc) != MMC_ERR_NONE)
|
|
device_printf(dev, "failed to flush cache\n");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mmcsd_suspend(device_t dev)
|
|
{
|
|
struct mmcsd_softc *sc = device_get_softc(dev);
|
|
struct mmcsd_part *part;
|
|
int i;
|
|
|
|
for (i = 0; i < MMC_PART_MAX; i++) {
|
|
part = sc->part[i];
|
|
if (part != NULL) {
|
|
if (part->disk != NULL) {
|
|
MMCSD_DISK_LOCK(part);
|
|
part->suspend = 1;
|
|
if (part->running > 0) {
|
|
/* kill thread */
|
|
part->running = 0;
|
|
wakeup(part);
|
|
/* wait for thread to finish. */
|
|
while (part->running != -1)
|
|
msleep(part, &part->disk_mtx, 0,
|
|
"mmcsd disk suspension", 0);
|
|
}
|
|
MMCSD_DISK_UNLOCK(part);
|
|
}
|
|
MMCSD_IOCTL_LOCK(part);
|
|
while (part->ioctl > 0)
|
|
msleep(part, &part->ioctl_mtx, 0,
|
|
"mmcsd IOCTL suspension", 0);
|
|
part->ioctl = -1;
|
|
MMCSD_IOCTL_UNLOCK(part);
|
|
}
|
|
}
|
|
if (mmcsd_flush_cache(sc) != MMC_ERR_NONE)
|
|
device_printf(dev, "failed to flush cache\n");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mmcsd_resume(device_t dev)
|
|
{
|
|
struct mmcsd_softc *sc = device_get_softc(dev);
|
|
struct mmcsd_part *part;
|
|
int i;
|
|
|
|
for (i = 0; i < MMC_PART_MAX; i++) {
|
|
part = sc->part[i];
|
|
if (part != NULL) {
|
|
if (part->disk != NULL) {
|
|
MMCSD_DISK_LOCK(part);
|
|
part->suspend = 0;
|
|
if (part->running <= 0) {
|
|
part->running = 1;
|
|
MMCSD_DISK_UNLOCK(part);
|
|
kproc_create(&mmcsd_task, part,
|
|
&part->p, 0, 0, "%s%d: mmc/sd card",
|
|
part->name, part->cnt);
|
|
} else
|
|
MMCSD_DISK_UNLOCK(part);
|
|
}
|
|
MMCSD_IOCTL_LOCK(part);
|
|
part->ioctl = 0;
|
|
MMCSD_IOCTL_UNLOCK(part);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mmcsd_close(struct disk *dp)
|
|
{
|
|
struct mmcsd_softc *sc;
|
|
|
|
if ((dp->d_flags & DISKFLAG_OPEN) != 0) {
|
|
sc = ((struct mmcsd_part *)dp->d_drv1)->sc;
|
|
if (mmcsd_flush_cache(sc) != MMC_ERR_NONE)
|
|
device_printf(sc->dev, "failed to flush cache\n");
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
mmcsd_strategy(struct bio *bp)
|
|
{
|
|
struct mmcsd_part *part;
|
|
|
|
part = bp->bio_disk->d_drv1;
|
|
MMCSD_DISK_LOCK(part);
|
|
if (part->running > 0 || part->suspend > 0) {
|
|
bioq_disksort(&part->bio_queue, bp);
|
|
MMCSD_DISK_UNLOCK(part);
|
|
wakeup(part);
|
|
} else {
|
|
MMCSD_DISK_UNLOCK(part);
|
|
biofinish(bp, NULL, ENXIO);
|
|
}
|
|
}
|
|
|
|
static int
|
|
mmcsd_ioctl_rpmb(struct cdev *dev, u_long cmd, caddr_t data,
|
|
int fflag, struct thread *td)
|
|
{
|
|
|
|
return (mmcsd_ioctl(dev->si_drv1, cmd, data, fflag, td));
|
|
}
|
|
|
|
static int
|
|
mmcsd_ioctl_disk(struct disk *disk, u_long cmd, void *data, int fflag,
|
|
struct thread *td)
|
|
{
|
|
|
|
return (mmcsd_ioctl(disk->d_drv1, cmd, data, fflag, td));
|
|
}
|
|
|
|
static int
|
|
mmcsd_ioctl(struct mmcsd_part *part, u_long cmd, void *data, int fflag,
|
|
struct thread *td)
|
|
{
|
|
struct mmc_ioc_cmd *mic;
|
|
struct mmc_ioc_multi_cmd *mimc;
|
|
int i, err;
|
|
u_long cnt, size;
|
|
|
|
if ((fflag & FREAD) == 0)
|
|
return (EBADF);
|
|
|
|
err = priv_check(td, PRIV_DRIVER);
|
|
if (err != 0)
|
|
return (err);
|
|
|
|
err = 0;
|
|
switch (cmd) {
|
|
case MMC_IOC_CMD:
|
|
mic = data;
|
|
err = mmcsd_ioctl_cmd(part, mic, fflag);
|
|
break;
|
|
case MMC_IOC_MULTI_CMD:
|
|
mimc = data;
|
|
if (mimc->num_of_cmds == 0)
|
|
break;
|
|
if (mimc->num_of_cmds > MMC_IOC_MAX_CMDS)
|
|
return (EINVAL);
|
|
cnt = mimc->num_of_cmds;
|
|
size = sizeof(*mic) * cnt;
|
|
mic = malloc(size, M_TEMP, M_WAITOK);
|
|
err = copyin((const void *)mimc->cmds, mic, size);
|
|
if (err == 0) {
|
|
for (i = 0; i < cnt; i++) {
|
|
err = mmcsd_ioctl_cmd(part, &mic[i], fflag);
|
|
if (err != 0)
|
|
break;
|
|
}
|
|
}
|
|
free(mic, M_TEMP);
|
|
break;
|
|
default:
|
|
return (ENOIOCTL);
|
|
}
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic, int fflag)
|
|
{
|
|
struct mmc_command cmd;
|
|
struct mmc_data data;
|
|
struct mmcsd_softc *sc;
|
|
device_t dev, mmcbus;
|
|
void *dp;
|
|
u_long len;
|
|
int err, retries;
|
|
uint32_t status;
|
|
uint16_t rca;
|
|
|
|
if ((fflag & FWRITE) == 0 && mic->write_flag != 0)
|
|
return (EBADF);
|
|
|
|
if (part->ro == TRUE && mic->write_flag != 0)
|
|
return (EROFS);
|
|
|
|
/*
|
|
* We don't need to explicitly lock against the disk(9) half of this
|
|
* driver as MMCBUS_ACQUIRE_BUS() will serialize us. However, it's
|
|
* necessary to protect against races with detachment and suspension,
|
|
* especially since it's required to switch away from RPMB partitions
|
|
* again after an access (see mmcsd_switch_part()).
|
|
*/
|
|
MMCSD_IOCTL_LOCK(part);
|
|
while (part->ioctl != 0) {
|
|
if (part->ioctl < 0) {
|
|
MMCSD_IOCTL_UNLOCK(part);
|
|
return (ENXIO);
|
|
}
|
|
msleep(part, &part->ioctl_mtx, 0, "mmcsd IOCTL", 0);
|
|
}
|
|
part->ioctl = 1;
|
|
MMCSD_IOCTL_UNLOCK(part);
|
|
|
|
err = 0;
|
|
dp = NULL;
|
|
len = mic->blksz * mic->blocks;
|
|
if (len > MMC_IOC_MAX_BYTES) {
|
|
err = EOVERFLOW;
|
|
goto out;
|
|
}
|
|
if (len != 0) {
|
|
dp = malloc(len, M_TEMP, M_WAITOK);
|
|
err = copyin((void *)(uintptr_t)mic->data_ptr, dp, len);
|
|
if (err != 0)
|
|
goto out;
|
|
}
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
memset(&data, 0, sizeof(data));
|
|
cmd.opcode = mic->opcode;
|
|
cmd.arg = mic->arg;
|
|
cmd.flags = mic->flags;
|
|
if (len != 0) {
|
|
data.len = len;
|
|
data.data = dp;
|
|
data.flags = mic->write_flag != 0 ? MMC_DATA_WRITE :
|
|
MMC_DATA_READ;
|
|
cmd.data = &data;
|
|
}
|
|
sc = part->sc;
|
|
rca = sc->rca;
|
|
if (mic->is_acmd == 0) {
|
|
/* Enforce/patch/restrict RCA-based commands */
|
|
switch (cmd.opcode) {
|
|
case MMC_SET_RELATIVE_ADDR:
|
|
case MMC_SELECT_CARD:
|
|
err = EPERM;
|
|
goto out;
|
|
case MMC_STOP_TRANSMISSION:
|
|
if ((cmd.arg & 0x1) == 0)
|
|
break;
|
|
/* FALLTHROUGH */
|
|
case MMC_SLEEP_AWAKE:
|
|
case MMC_SEND_CSD:
|
|
case MMC_SEND_CID:
|
|
case MMC_SEND_STATUS:
|
|
case MMC_GO_INACTIVE_STATE:
|
|
case MMC_FAST_IO:
|
|
case MMC_APP_CMD:
|
|
cmd.arg = (cmd.arg & 0x0000FFFF) | (rca << 16);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
/*
|
|
* No partition switching in userland; it's almost impossible
|
|
* to recover from that, especially if things go wrong.
|
|
*/
|
|
if (cmd.opcode == MMC_SWITCH_FUNC && dp != NULL &&
|
|
(((uint8_t *)dp)[EXT_CSD_PART_CONFIG] &
|
|
EXT_CSD_PART_CONFIG_ACC_MASK) != part->type) {
|
|
err = EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
dev = sc->dev;
|
|
mmcbus = sc->mmcbus;
|
|
MMCBUS_ACQUIRE_BUS(mmcbus, dev);
|
|
err = mmcsd_switch_part(mmcbus, dev, rca, part->type);
|
|
if (err != MMC_ERR_NONE)
|
|
goto release;
|
|
if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) {
|
|
err = mmcsd_set_blockcount(sc, mic->blocks,
|
|
mic->write_flag & (1 << 31));
|
|
if (err != MMC_ERR_NONE)
|
|
goto switch_back;
|
|
}
|
|
if (mic->write_flag != 0)
|
|
sc->flags |= MMCSD_DIRTY;
|
|
if (mic->is_acmd != 0)
|
|
(void)mmc_wait_for_app_cmd(mmcbus, dev, rca, &cmd, 0);
|
|
else
|
|
(void)mmc_wait_for_cmd(mmcbus, dev, &cmd, 0);
|
|
if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) {
|
|
/*
|
|
* If the request went to the RPMB partition, try to ensure
|
|
* that the command actually has completed.
|
|
*/
|
|
retries = MMCSD_CMD_RETRIES;
|
|
do {
|
|
err = mmc_send_status(mmcbus, dev, rca, &status);
|
|
if (err != MMC_ERR_NONE)
|
|
break;
|
|
if (R1_STATUS(status) == 0 &&
|
|
R1_CURRENT_STATE(status) != R1_STATE_PRG)
|
|
break;
|
|
DELAY(1000);
|
|
} while (retries-- > 0);
|
|
}
|
|
/*
|
|
* If EXT_CSD was changed, our copy is outdated now. Specifically,
|
|
* the upper bits of EXT_CSD_PART_CONFIG used in mmcsd_switch_part(),
|
|
* so retrieve EXT_CSD again.
|
|
*/
|
|
if (cmd.opcode == MMC_SWITCH_FUNC) {
|
|
err = mmc_send_ext_csd(mmcbus, dev, sc->ext_csd);
|
|
if (err != MMC_ERR_NONE)
|
|
goto release;
|
|
}
|
|
switch_back:
|
|
if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) {
|
|
/*
|
|
* If the request went to the RPMB partition, always switch
|
|
* back to the default partition (see mmcsd_switch_part()).
|
|
*/
|
|
err = mmcsd_switch_part(mmcbus, dev, rca,
|
|
EXT_CSD_PART_CONFIG_ACC_DEFAULT);
|
|
if (err != MMC_ERR_NONE)
|
|
goto release;
|
|
}
|
|
MMCBUS_RELEASE_BUS(mmcbus, dev);
|
|
if (cmd.error != MMC_ERR_NONE) {
|
|
switch (cmd.error) {
|
|
case MMC_ERR_TIMEOUT:
|
|
err = ETIMEDOUT;
|
|
break;
|
|
case MMC_ERR_BADCRC:
|
|
err = EILSEQ;
|
|
break;
|
|
case MMC_ERR_INVALID:
|
|
err = EINVAL;
|
|
break;
|
|
case MMC_ERR_NO_MEMORY:
|
|
err = ENOMEM;
|
|
break;
|
|
default:
|
|
err = EIO;
|
|
break;
|
|
}
|
|
goto out;
|
|
}
|
|
memcpy(mic->response, cmd.resp, 4 * sizeof(uint32_t));
|
|
if (mic->write_flag == 0 && len != 0) {
|
|
err = copyout(dp, (void *)(uintptr_t)mic->data_ptr, len);
|
|
if (err != 0)
|
|
goto out;
|
|
}
|
|
goto out;
|
|
|
|
release:
|
|
MMCBUS_RELEASE_BUS(mmcbus, dev);
|
|
err = EIO;
|
|
|
|
out:
|
|
MMCSD_IOCTL_LOCK(part);
|
|
part->ioctl = 0;
|
|
MMCSD_IOCTL_UNLOCK(part);
|
|
wakeup(part);
|
|
if (dp != NULL)
|
|
free(dp, M_TEMP);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
mmcsd_getattr(struct bio *bp)
|
|
{
|
|
struct mmcsd_part *part;
|
|
device_t dev;
|
|
|
|
if (strcmp(bp->bio_attribute, "MMC::device") == 0) {
|
|
if (bp->bio_length != sizeof(dev))
|
|
return (EFAULT);
|
|
part = bp->bio_disk->d_drv1;
|
|
dev = part->sc->dev;
|
|
bcopy(&dev, bp->bio_data, sizeof(dev));
|
|
bp->bio_completed = bp->bio_length;
|
|
return (0);
|
|
}
|
|
return (-1);
|
|
}
|
|
|
|
static int
|
|
mmcsd_set_blockcount(struct mmcsd_softc *sc, u_int count, bool reliable)
|
|
{
|
|
struct mmc_command cmd;
|
|
struct mmc_request req;
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
cmd.mrq = &req;
|
|
req.cmd = &cmd;
|
|
cmd.opcode = MMC_SET_BLOCK_COUNT;
|
|
cmd.arg = count & 0x0000FFFF;
|
|
if (reliable)
|
|
cmd.arg |= 1 << 31;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
|
|
MMCBUS_WAIT_FOR_REQUEST(sc->mmcbus, sc->dev, &req);
|
|
return (cmd.error);
|
|
}
|
|
|
|
static int
|
|
mmcsd_switch_part(device_t bus, device_t dev, uint16_t rca, u_int part)
|
|
{
|
|
struct mmcsd_softc *sc;
|
|
int err;
|
|
uint8_t value;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
if (sc->mode == mode_sd)
|
|
return (MMC_ERR_NONE);
|
|
|
|
/*
|
|
* According to section "6.2.2 Command restrictions" of the eMMC
|
|
* specification v5.1, CMD19/CMD21 aren't allowed to be used with
|
|
* RPMB partitions. So we pause re-tuning along with triggering
|
|
* it up-front to decrease the likelihood of re-tuning becoming
|
|
* necessary while accessing an RPMB partition. Consequently, an
|
|
* RPMB partition should immediately be switched away from again
|
|
* after an access in order to allow for re-tuning to take place
|
|
* anew.
|
|
*/
|
|
if (part == EXT_CSD_PART_CONFIG_ACC_RPMB)
|
|
MMCBUS_RETUNE_PAUSE(sc->mmcbus, sc->dev, true);
|
|
|
|
if (sc->part_curr == part)
|
|
return (MMC_ERR_NONE);
|
|
|
|
value = (sc->ext_csd[EXT_CSD_PART_CONFIG] &
|
|
~EXT_CSD_PART_CONFIG_ACC_MASK) | part;
|
|
/* Jump! */
|
|
err = mmc_switch(bus, dev, rca, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_PART_CONFIG, value, sc->part_time, true);
|
|
if (err != MMC_ERR_NONE) {
|
|
if (part == EXT_CSD_PART_CONFIG_ACC_RPMB)
|
|
MMCBUS_RETUNE_UNPAUSE(sc->mmcbus, sc->dev);
|
|
return (err);
|
|
}
|
|
|
|
sc->ext_csd[EXT_CSD_PART_CONFIG] = value;
|
|
if (sc->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB)
|
|
MMCBUS_RETUNE_UNPAUSE(sc->mmcbus, sc->dev);
|
|
sc->part_curr = part;
|
|
return (MMC_ERR_NONE);
|
|
}
|
|
|
|
static const char *
|
|
mmcsd_errmsg(int e)
|
|
{
|
|
|
|
if (e < 0 || e > MMC_ERR_MAX)
|
|
return "Bad error code";
|
|
return (errmsg[e]);
|
|
}
|
|
|
|
static daddr_t
|
|
mmcsd_rw(struct mmcsd_part *part, struct bio *bp)
|
|
{
|
|
daddr_t block, end;
|
|
struct mmc_command cmd;
|
|
struct mmc_command stop;
|
|
struct mmc_request req;
|
|
struct mmc_data data;
|
|
struct mmcsd_softc *sc;
|
|
device_t dev, mmcbus;
|
|
u_int numblocks, sz;
|
|
char *vaddr;
|
|
|
|
sc = part->sc;
|
|
dev = sc->dev;
|
|
mmcbus = sc->mmcbus;
|
|
|
|
block = bp->bio_pblkno;
|
|
sz = part->disk->d_sectorsize;
|
|
end = bp->bio_pblkno + (bp->bio_bcount / sz);
|
|
while (block < end) {
|
|
vaddr = bp->bio_data + (block - bp->bio_pblkno) * sz;
|
|
numblocks = min(end - block, sc->max_data);
|
|
memset(&req, 0, sizeof(req));
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
memset(&stop, 0, sizeof(stop));
|
|
memset(&data, 0, sizeof(data));
|
|
cmd.mrq = &req;
|
|
req.cmd = &cmd;
|
|
cmd.data = &data;
|
|
if (bp->bio_cmd == BIO_READ) {
|
|
if (numblocks > 1)
|
|
cmd.opcode = MMC_READ_MULTIPLE_BLOCK;
|
|
else
|
|
cmd.opcode = MMC_READ_SINGLE_BLOCK;
|
|
} else {
|
|
sc->flags |= MMCSD_DIRTY;
|
|
if (numblocks > 1)
|
|
cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK;
|
|
else
|
|
cmd.opcode = MMC_WRITE_BLOCK;
|
|
}
|
|
cmd.arg = block;
|
|
if (sc->high_cap == 0)
|
|
cmd.arg <<= 9;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
data.data = vaddr;
|
|
data.mrq = &req;
|
|
if (bp->bio_cmd == BIO_READ)
|
|
data.flags = MMC_DATA_READ;
|
|
else
|
|
data.flags = MMC_DATA_WRITE;
|
|
data.len = numblocks * sz;
|
|
if (numblocks > 1) {
|
|
data.flags |= MMC_DATA_MULTI;
|
|
stop.opcode = MMC_STOP_TRANSMISSION;
|
|
stop.arg = 0;
|
|
stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
|
|
stop.mrq = &req;
|
|
req.stop = &stop;
|
|
}
|
|
MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req);
|
|
if (req.cmd->error != MMC_ERR_NONE) {
|
|
if (ppsratecheck(&sc->log_time, &sc->log_count,
|
|
LOG_PPS))
|
|
device_printf(dev, "Error indicated: %d %s\n",
|
|
req.cmd->error,
|
|
mmcsd_errmsg(req.cmd->error));
|
|
break;
|
|
}
|
|
block += numblocks;
|
|
}
|
|
return (block);
|
|
}
|
|
|
|
static daddr_t
|
|
mmcsd_delete(struct mmcsd_part *part, struct bio *bp)
|
|
{
|
|
daddr_t block, end, start, stop;
|
|
struct mmc_command cmd;
|
|
struct mmc_request req;
|
|
struct mmcsd_softc *sc;
|
|
device_t dev, mmcbus;
|
|
u_int erase_sector, sz;
|
|
int err;
|
|
bool use_trim;
|
|
|
|
sc = part->sc;
|
|
dev = sc->dev;
|
|
mmcbus = sc->mmcbus;
|
|
|
|
block = bp->bio_pblkno;
|
|
sz = part->disk->d_sectorsize;
|
|
end = bp->bio_pblkno + (bp->bio_bcount / sz);
|
|
use_trim = sc->flags & MMCSD_USE_TRIM;
|
|
if (use_trim == true) {
|
|
start = block;
|
|
stop = end;
|
|
} else {
|
|
/* Coalesce with the remainder of the previous request. */
|
|
if (block > part->eblock && block <= part->eend)
|
|
block = part->eblock;
|
|
if (end >= part->eblock && end < part->eend)
|
|
end = part->eend;
|
|
/* Safely round to the erase sector boundaries. */
|
|
erase_sector = sc->erase_sector;
|
|
start = block + erase_sector - 1; /* Round up. */
|
|
start -= start % erase_sector;
|
|
stop = end; /* Round down. */
|
|
stop -= end % erase_sector;
|
|
/*
|
|
* We can't erase an area smaller than an erase sector, so
|
|
* store it for later.
|
|
*/
|
|
if (start >= stop) {
|
|
part->eblock = block;
|
|
part->eend = end;
|
|
return (end);
|
|
}
|
|
}
|
|
|
|
if ((sc->flags & MMCSD_INAND_CMD38) != 0) {
|
|
err = mmc_switch(mmcbus, dev, sc->rca, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_INAND_CMD38, use_trim == true ?
|
|
EXT_CSD_INAND_CMD38_TRIM : EXT_CSD_INAND_CMD38_ERASE,
|
|
sc->cmd6_time, true);
|
|
if (err != MMC_ERR_NONE) {
|
|
device_printf(dev,
|
|
"Setting iNAND erase command failed %s\n",
|
|
mmcsd_errmsg(err));
|
|
return (block);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Pause re-tuning so it won't interfere with the order of erase
|
|
* commands. Note that these latter don't use the data lines, so
|
|
* re-tuning shouldn't actually become necessary during erase.
|
|
*/
|
|
MMCBUS_RETUNE_PAUSE(mmcbus, dev, false);
|
|
/* Set erase start position. */
|
|
memset(&req, 0, sizeof(req));
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
cmd.mrq = &req;
|
|
req.cmd = &cmd;
|
|
if (sc->mode == mode_sd)
|
|
cmd.opcode = SD_ERASE_WR_BLK_START;
|
|
else
|
|
cmd.opcode = MMC_ERASE_GROUP_START;
|
|
cmd.arg = start;
|
|
if (sc->high_cap == 0)
|
|
cmd.arg <<= 9;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
|
|
MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req);
|
|
if (req.cmd->error != MMC_ERR_NONE) {
|
|
device_printf(dev, "Setting erase start position failed %s\n",
|
|
mmcsd_errmsg(req.cmd->error));
|
|
block = bp->bio_pblkno;
|
|
goto unpause;
|
|
}
|
|
/* Set erase stop position. */
|
|
memset(&req, 0, sizeof(req));
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
req.cmd = &cmd;
|
|
if (sc->mode == mode_sd)
|
|
cmd.opcode = SD_ERASE_WR_BLK_END;
|
|
else
|
|
cmd.opcode = MMC_ERASE_GROUP_END;
|
|
cmd.arg = stop;
|
|
if (sc->high_cap == 0)
|
|
cmd.arg <<= 9;
|
|
cmd.arg--;
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
|
|
MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req);
|
|
if (req.cmd->error != MMC_ERR_NONE) {
|
|
device_printf(dev, "Setting erase stop position failed %s\n",
|
|
mmcsd_errmsg(req.cmd->error));
|
|
block = bp->bio_pblkno;
|
|
goto unpause;
|
|
}
|
|
/* Erase range. */
|
|
memset(&req, 0, sizeof(req));
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
req.cmd = &cmd;
|
|
cmd.opcode = MMC_ERASE;
|
|
cmd.arg = use_trim == true ? MMC_ERASE_TRIM : MMC_ERASE_ERASE;
|
|
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
|
|
MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req);
|
|
if (req.cmd->error != MMC_ERR_NONE) {
|
|
device_printf(dev, "Issuing erase command failed %s\n",
|
|
mmcsd_errmsg(req.cmd->error));
|
|
block = bp->bio_pblkno;
|
|
goto unpause;
|
|
}
|
|
if (use_trim == false) {
|
|
/* Store one of the remaining parts for the next call. */
|
|
if (bp->bio_pblkno >= part->eblock || block == start) {
|
|
part->eblock = stop; /* Predict next forward. */
|
|
part->eend = end;
|
|
} else {
|
|
part->eblock = block; /* Predict next backward. */
|
|
part->eend = start;
|
|
}
|
|
}
|
|
block = end;
|
|
unpause:
|
|
MMCBUS_RETUNE_UNPAUSE(mmcbus, dev);
|
|
return (block);
|
|
}
|
|
|
|
static int
|
|
mmcsd_dump(void *arg, void *virtual, off_t offset, size_t length)
|
|
{
|
|
struct bio bp;
|
|
daddr_t block, end;
|
|
struct disk *disk;
|
|
struct mmcsd_softc *sc;
|
|
struct mmcsd_part *part;
|
|
device_t dev, mmcbus;
|
|
int err;
|
|
|
|
disk = arg;
|
|
part = disk->d_drv1;
|
|
sc = part->sc;
|
|
|
|
/* length zero is special and really means flush buffers to media */
|
|
if (length == 0) {
|
|
err = mmcsd_flush_cache(sc);
|
|
if (err != MMC_ERR_NONE)
|
|
return (EIO);
|
|
return (0);
|
|
}
|
|
|
|
dev = sc->dev;
|
|
mmcbus = sc->mmcbus;
|
|
|
|
g_reset_bio(&bp);
|
|
bp.bio_disk = disk;
|
|
bp.bio_pblkno = offset / disk->d_sectorsize;
|
|
bp.bio_bcount = length;
|
|
bp.bio_data = virtual;
|
|
bp.bio_cmd = BIO_WRITE;
|
|
end = bp.bio_pblkno + bp.bio_bcount / disk->d_sectorsize;
|
|
MMCBUS_ACQUIRE_BUS(mmcbus, dev);
|
|
err = mmcsd_switch_part(mmcbus, dev, sc->rca, part->type);
|
|
if (err != MMC_ERR_NONE) {
|
|
if (ppsratecheck(&sc->log_time, &sc->log_count, LOG_PPS))
|
|
device_printf(dev, "Partition switch error\n");
|
|
MMCBUS_RELEASE_BUS(mmcbus, dev);
|
|
return (EIO);
|
|
}
|
|
block = mmcsd_rw(part, &bp);
|
|
MMCBUS_RELEASE_BUS(mmcbus, dev);
|
|
return ((end < block) ? EIO : 0);
|
|
}
|
|
|
|
static void
|
|
mmcsd_task(void *arg)
|
|
{
|
|
daddr_t block, end;
|
|
struct mmcsd_part *part;
|
|
struct mmcsd_softc *sc;
|
|
struct bio *bp;
|
|
device_t dev, mmcbus;
|
|
int bio_error, err, sz;
|
|
|
|
part = arg;
|
|
sc = part->sc;
|
|
dev = sc->dev;
|
|
mmcbus = sc->mmcbus;
|
|
|
|
while (1) {
|
|
bio_error = 0;
|
|
MMCSD_DISK_LOCK(part);
|
|
do {
|
|
if (part->running == 0)
|
|
goto out;
|
|
bp = bioq_takefirst(&part->bio_queue);
|
|
if (bp == NULL)
|
|
msleep(part, &part->disk_mtx, PRIBIO,
|
|
"mmcsd disk jobqueue", 0);
|
|
} while (bp == NULL);
|
|
MMCSD_DISK_UNLOCK(part);
|
|
if (__predict_false(bp->bio_cmd == BIO_FLUSH)) {
|
|
if (mmcsd_flush_cache(sc) != MMC_ERR_NONE) {
|
|
bp->bio_error = EIO;
|
|
bp->bio_flags |= BIO_ERROR;
|
|
}
|
|
biodone(bp);
|
|
continue;
|
|
}
|
|
if (bp->bio_cmd != BIO_READ && part->ro) {
|
|
bp->bio_error = EROFS;
|
|
bp->bio_resid = bp->bio_bcount;
|
|
bp->bio_flags |= BIO_ERROR;
|
|
biodone(bp);
|
|
continue;
|
|
}
|
|
MMCBUS_ACQUIRE_BUS(mmcbus, dev);
|
|
sz = part->disk->d_sectorsize;
|
|
block = bp->bio_pblkno;
|
|
end = bp->bio_pblkno + (bp->bio_bcount / sz);
|
|
err = mmcsd_switch_part(mmcbus, dev, sc->rca, part->type);
|
|
if (err != MMC_ERR_NONE) {
|
|
if (ppsratecheck(&sc->log_time, &sc->log_count,
|
|
LOG_PPS))
|
|
device_printf(dev, "Partition switch error\n");
|
|
goto release;
|
|
}
|
|
if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) {
|
|
/* Access to the remaining erase block obsoletes it. */
|
|
if (block < part->eend && end > part->eblock)
|
|
part->eblock = part->eend = 0;
|
|
block = mmcsd_rw(part, bp);
|
|
} else if (bp->bio_cmd == BIO_DELETE)
|
|
block = mmcsd_delete(part, bp);
|
|
else
|
|
bio_error = EOPNOTSUPP;
|
|
release:
|
|
MMCBUS_RELEASE_BUS(mmcbus, dev);
|
|
if (block < end) {
|
|
bp->bio_error = (bio_error == 0) ? EIO : bio_error;
|
|
bp->bio_resid = (end - block) * sz;
|
|
bp->bio_flags |= BIO_ERROR;
|
|
} else
|
|
bp->bio_resid = 0;
|
|
biodone(bp);
|
|
}
|
|
out:
|
|
/* tell parent we're done */
|
|
part->running = -1;
|
|
MMCSD_DISK_UNLOCK(part);
|
|
wakeup(part);
|
|
|
|
kproc_exit(0);
|
|
}
|
|
|
|
static int
|
|
mmcsd_bus_bit_width(device_t dev)
|
|
{
|
|
|
|
if (mmc_get_bus_width(dev) == bus_width_1)
|
|
return (1);
|
|
if (mmc_get_bus_width(dev) == bus_width_4)
|
|
return (4);
|
|
return (8);
|
|
}
|
|
|
|
static int
|
|
mmcsd_flush_cache(struct mmcsd_softc *sc)
|
|
{
|
|
device_t dev, mmcbus;
|
|
int err;
|
|
|
|
if ((sc->flags & MMCSD_FLUSH_CACHE) == 0)
|
|
return (MMC_ERR_NONE);
|
|
|
|
dev = sc->dev;
|
|
mmcbus = sc->mmcbus;
|
|
MMCBUS_ACQUIRE_BUS(mmcbus, dev);
|
|
if ((sc->flags & MMCSD_DIRTY) == 0) {
|
|
MMCBUS_RELEASE_BUS(mmcbus, dev);
|
|
return (MMC_ERR_NONE);
|
|
}
|
|
err = mmc_switch(mmcbus, dev, sc->rca, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_FLUSH_CACHE, EXT_CSD_FLUSH_CACHE_FLUSH, 60 * 1000, true);
|
|
if (err == MMC_ERR_NONE)
|
|
sc->flags &= ~MMCSD_DIRTY;
|
|
MMCBUS_RELEASE_BUS(mmcbus, dev);
|
|
return (err);
|
|
}
|
|
|
|
static device_method_t mmcsd_methods[] = {
|
|
DEVMETHOD(device_probe, mmcsd_probe),
|
|
DEVMETHOD(device_attach, mmcsd_attach),
|
|
DEVMETHOD(device_detach, mmcsd_detach),
|
|
DEVMETHOD(device_shutdown, mmcsd_shutdown),
|
|
DEVMETHOD(device_suspend, mmcsd_suspend),
|
|
DEVMETHOD(device_resume, mmcsd_resume),
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static driver_t mmcsd_driver = {
|
|
"mmcsd",
|
|
mmcsd_methods,
|
|
sizeof(struct mmcsd_softc),
|
|
};
|
|
|
|
static int
|
|
mmcsd_handler(module_t mod __unused, int what, void *arg __unused)
|
|
{
|
|
|
|
switch (what) {
|
|
case MOD_LOAD:
|
|
flash_register_slicer(mmcsd_slicer, FLASH_SLICES_TYPE_MMC,
|
|
TRUE);
|
|
return (0);
|
|
case MOD_UNLOAD:
|
|
flash_register_slicer(NULL, FLASH_SLICES_TYPE_MMC, TRUE);
|
|
return (0);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
DRIVER_MODULE(mmcsd, mmc, mmcsd_driver, mmcsd_handler, NULL);
|
|
MODULE_DEPEND(mmcsd, g_flashmap, 0, 0, 0);
|
|
MMC_DEPEND(mmcsd);
|