2897 lines
81 KiB
C
2897 lines
81 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2008 Alexander Motin <mav@FreeBSD.org>
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* Copyright (c) 2017 Marius Strobl <marius@FreeBSD.org>
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* 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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#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/bus.h>
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#include <sys/callout.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/kobj.h>
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#include <sys/libkern.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/resource.h>
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#include <sys/rman.h>
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#include <sys/sysctl.h>
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#include <sys/taskqueue.h>
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#include <sys/sbuf.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <machine/stdarg.h>
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#include <dev/mmc/bridge.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/sdhci/sdhci.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_debug.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt_sim.h>
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#include "mmcbr_if.h"
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#include "sdhci_if.h"
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#include "opt_mmccam.h"
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SYSCTL_NODE(_hw, OID_AUTO, sdhci, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
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"sdhci driver");
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static int sdhci_debug = 0;
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SYSCTL_INT(_hw_sdhci, OID_AUTO, debug, CTLFLAG_RWTUN, &sdhci_debug, 0,
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"Debug level");
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u_int sdhci_quirk_clear = 0;
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SYSCTL_INT(_hw_sdhci, OID_AUTO, quirk_clear, CTLFLAG_RWTUN, &sdhci_quirk_clear,
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0, "Mask of quirks to clear");
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u_int sdhci_quirk_set = 0;
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SYSCTL_INT(_hw_sdhci, OID_AUTO, quirk_set, CTLFLAG_RWTUN, &sdhci_quirk_set, 0,
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"Mask of quirks to set");
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#define RD1(slot, off) SDHCI_READ_1((slot)->bus, (slot), (off))
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#define RD2(slot, off) SDHCI_READ_2((slot)->bus, (slot), (off))
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#define RD4(slot, off) SDHCI_READ_4((slot)->bus, (slot), (off))
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#define RD_MULTI_4(slot, off, ptr, count) \
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SDHCI_READ_MULTI_4((slot)->bus, (slot), (off), (ptr), (count))
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#define WR1(slot, off, val) SDHCI_WRITE_1((slot)->bus, (slot), (off), (val))
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#define WR2(slot, off, val) SDHCI_WRITE_2((slot)->bus, (slot), (off), (val))
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#define WR4(slot, off, val) SDHCI_WRITE_4((slot)->bus, (slot), (off), (val))
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#define WR_MULTI_4(slot, off, ptr, count) \
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SDHCI_WRITE_MULTI_4((slot)->bus, (slot), (off), (ptr), (count))
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static void sdhci_acmd_irq(struct sdhci_slot *slot, uint16_t acmd_err);
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static void sdhci_card_poll(void *arg);
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static void sdhci_card_task(void *arg, int pending);
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static void sdhci_cmd_irq(struct sdhci_slot *slot, uint32_t intmask);
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static void sdhci_data_irq(struct sdhci_slot *slot, uint32_t intmask);
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static int sdhci_exec_tuning(struct sdhci_slot *slot, bool reset);
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static void sdhci_handle_card_present_locked(struct sdhci_slot *slot,
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bool is_present);
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static void sdhci_finish_command(struct sdhci_slot *slot);
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static void sdhci_init(struct sdhci_slot *slot);
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static void sdhci_read_block_pio(struct sdhci_slot *slot);
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static void sdhci_req_done(struct sdhci_slot *slot);
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static void sdhci_req_wakeup(struct mmc_request *req);
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static void sdhci_retune(void *arg);
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static void sdhci_set_clock(struct sdhci_slot *slot, uint32_t clock);
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static void sdhci_set_power(struct sdhci_slot *slot, u_char power);
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static void sdhci_set_transfer_mode(struct sdhci_slot *slot,
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const struct mmc_data *data);
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static void sdhci_start(struct sdhci_slot *slot);
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static void sdhci_timeout(void *arg);
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static void sdhci_start_command(struct sdhci_slot *slot,
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struct mmc_command *cmd);
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static void sdhci_start_data(struct sdhci_slot *slot,
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const struct mmc_data *data);
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static void sdhci_write_block_pio(struct sdhci_slot *slot);
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static void sdhci_transfer_pio(struct sdhci_slot *slot);
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#ifdef MMCCAM
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/* CAM-related */
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static void sdhci_cam_action(struct cam_sim *sim, union ccb *ccb);
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static int sdhci_cam_get_possible_host_clock(const struct sdhci_slot *slot,
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int proposed_clock);
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static void sdhci_cam_poll(struct cam_sim *sim);
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static int sdhci_cam_request(struct sdhci_slot *slot, union ccb *ccb);
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static int sdhci_cam_settran_settings(struct sdhci_slot *slot, union ccb *ccb);
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static int sdhci_cam_update_ios(struct sdhci_slot *slot);
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#endif
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/* helper routines */
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static int sdhci_dma_alloc(struct sdhci_slot *slot);
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static void sdhci_dma_free(struct sdhci_slot *slot);
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static void sdhci_dumpcaps(struct sdhci_slot *slot);
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static void sdhci_dumpcaps_buf(struct sdhci_slot *slot, struct sbuf *s);
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static void sdhci_dumpregs(struct sdhci_slot *slot);
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static void sdhci_dumpregs_buf(struct sdhci_slot *slot, struct sbuf *s);
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static int sdhci_syctl_dumpcaps(SYSCTL_HANDLER_ARGS);
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static int sdhci_syctl_dumpregs(SYSCTL_HANDLER_ARGS);
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static void sdhci_getaddr(void *arg, bus_dma_segment_t *segs, int nsegs,
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int error);
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static int slot_printf(const struct sdhci_slot *slot, const char * fmt, ...)
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__printflike(2, 3);
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static int slot_sprintf(const struct sdhci_slot *slot, struct sbuf *s,
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const char * fmt, ...) __printflike(3, 4);
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static uint32_t sdhci_tuning_intmask(const struct sdhci_slot *slot);
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#define SDHCI_LOCK(_slot) mtx_lock(&(_slot)->mtx)
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#define SDHCI_UNLOCK(_slot) mtx_unlock(&(_slot)->mtx)
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#define SDHCI_LOCK_INIT(_slot) \
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mtx_init(&_slot->mtx, "SD slot mtx", "sdhci", MTX_DEF)
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#define SDHCI_LOCK_DESTROY(_slot) mtx_destroy(&_slot->mtx);
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#define SDHCI_ASSERT_LOCKED(_slot) mtx_assert(&_slot->mtx, MA_OWNED);
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#define SDHCI_ASSERT_UNLOCKED(_slot) mtx_assert(&_slot->mtx, MA_NOTOWNED);
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#define SDHCI_DEFAULT_MAX_FREQ 50
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#define SDHCI_200_MAX_DIVIDER 256
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#define SDHCI_300_MAX_DIVIDER 2046
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#define SDHCI_CARD_PRESENT_TICKS (hz / 5)
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#define SDHCI_INSERT_DELAY_TICKS (hz / 2)
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/*
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* Broadcom BCM577xx Controller Constants
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*/
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/* Maximum divider supported by the default clock source. */
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#define BCM577XX_DEFAULT_MAX_DIVIDER 256
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/* Alternative clock's base frequency. */
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#define BCM577XX_ALT_CLOCK_BASE 63000000
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#define BCM577XX_HOST_CONTROL 0x198
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#define BCM577XX_CTRL_CLKSEL_MASK 0xFFFFCFFF
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#define BCM577XX_CTRL_CLKSEL_SHIFT 12
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#define BCM577XX_CTRL_CLKSEL_DEFAULT 0x0
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#define BCM577XX_CTRL_CLKSEL_64MHZ 0x3
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static void
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sdhci_getaddr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
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{
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if (error != 0) {
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printf("getaddr: error %d\n", error);
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return;
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}
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*(bus_addr_t *)arg = segs[0].ds_addr;
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}
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static int
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slot_printf(const struct sdhci_slot *slot, const char * fmt, ...)
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{
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char buf[128];
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va_list ap;
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int retval;
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/*
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* Make sure we print a single line all together rather than in two
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* halves to avoid console gibberish bingo.
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*/
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va_start(ap, fmt);
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retval = vsnprintf(buf, sizeof(buf), fmt, ap);
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va_end(ap);
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retval += printf("%s-slot%d: %s",
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device_get_nameunit(slot->bus), slot->num, buf);
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return (retval);
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}
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static int
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slot_sprintf(const struct sdhci_slot *slot, struct sbuf *s,
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const char * fmt, ...)
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{
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va_list ap;
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int retval;
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retval = sbuf_printf(s, "%s-slot%d: ", device_get_nameunit(slot->bus), slot->num);
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va_start(ap, fmt);
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retval += sbuf_vprintf(s, fmt, ap);
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va_end(ap);
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return (retval);
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}
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static void
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sdhci_dumpregs_buf(struct sdhci_slot *slot, struct sbuf *s)
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{
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slot_sprintf(slot, s, "============== REGISTER DUMP ==============\n");
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slot_sprintf(slot, s, "Sys addr: 0x%08x | Version: 0x%08x\n",
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RD4(slot, SDHCI_DMA_ADDRESS), RD2(slot, SDHCI_HOST_VERSION));
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slot_sprintf(slot, s, "Blk size: 0x%08x | Blk cnt: 0x%08x\n",
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RD2(slot, SDHCI_BLOCK_SIZE), RD2(slot, SDHCI_BLOCK_COUNT));
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slot_sprintf(slot, s, "Argument: 0x%08x | Trn mode: 0x%08x\n",
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RD4(slot, SDHCI_ARGUMENT), RD2(slot, SDHCI_TRANSFER_MODE));
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slot_sprintf(slot, s, "Present: 0x%08x | Host ctl: 0x%08x\n",
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RD4(slot, SDHCI_PRESENT_STATE), RD1(slot, SDHCI_HOST_CONTROL));
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slot_sprintf(slot, s, "Power: 0x%08x | Blk gap: 0x%08x\n",
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RD1(slot, SDHCI_POWER_CONTROL), RD1(slot, SDHCI_BLOCK_GAP_CONTROL));
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slot_sprintf(slot, s, "Wake-up: 0x%08x | Clock: 0x%08x\n",
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RD1(slot, SDHCI_WAKE_UP_CONTROL), RD2(slot, SDHCI_CLOCK_CONTROL));
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slot_sprintf(slot, s, "Timeout: 0x%08x | Int stat: 0x%08x\n",
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RD1(slot, SDHCI_TIMEOUT_CONTROL), RD4(slot, SDHCI_INT_STATUS));
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slot_sprintf(slot, s, "Int enab: 0x%08x | Sig enab: 0x%08x\n",
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RD4(slot, SDHCI_INT_ENABLE), RD4(slot, SDHCI_SIGNAL_ENABLE));
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slot_sprintf(slot, s, "AC12 err: 0x%08x | Host ctl2:0x%08x\n",
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RD2(slot, SDHCI_ACMD12_ERR), RD2(slot, SDHCI_HOST_CONTROL2));
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slot_sprintf(slot, s, "Caps: 0x%08x | Caps2: 0x%08x\n",
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RD4(slot, SDHCI_CAPABILITIES), RD4(slot, SDHCI_CAPABILITIES2));
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slot_sprintf(slot, s, "Max curr: 0x%08x | ADMA err: 0x%08x\n",
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RD4(slot, SDHCI_MAX_CURRENT), RD1(slot, SDHCI_ADMA_ERR));
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slot_sprintf(slot, s, "ADMA addr:0x%08x | Slot int: 0x%08x\n",
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RD4(slot, SDHCI_ADMA_ADDRESS_LO), RD2(slot, SDHCI_SLOT_INT_STATUS));
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slot_sprintf(slot, s, "===========================================\n");
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}
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static void
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sdhci_dumpregs(struct sdhci_slot *slot)
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{
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struct sbuf s;
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if (sbuf_new(&s, NULL, 1024, SBUF_NOWAIT | SBUF_AUTOEXTEND) == NULL) {
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slot_printf(slot, "sdhci_dumpregs: Failed to allocate memory for sbuf\n");
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return;
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}
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sbuf_set_drain(&s, &sbuf_printf_drain, NULL);
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sdhci_dumpregs_buf(slot, &s);
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sbuf_finish(&s);
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sbuf_delete(&s);
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}
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static int
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sdhci_syctl_dumpregs(SYSCTL_HANDLER_ARGS)
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{
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struct sdhci_slot *slot = arg1;
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struct sbuf s;
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sbuf_new_for_sysctl(&s, NULL, 1024, req);
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sbuf_putc(&s, '\n');
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sdhci_dumpregs_buf(slot, &s);
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sbuf_finish(&s);
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sbuf_delete(&s);
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return (0);
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}
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static void
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sdhci_dumpcaps_buf(struct sdhci_slot *slot, struct sbuf *s)
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{
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int host_caps = slot->host.caps;
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int caps = slot->caps;
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slot_sprintf(slot, s,
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"%uMHz%s %s VDD:%s%s%s VCCQ: 3.3V%s%s DRV: B%s%s%s %s %s\n",
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slot->max_clk / 1000000,
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(caps & SDHCI_CAN_DO_HISPD) ? " HS" : "",
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(host_caps & MMC_CAP_8_BIT_DATA) ? "8bits" :
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((host_caps & MMC_CAP_4_BIT_DATA) ? "4bits" : "1bit"),
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(caps & SDHCI_CAN_VDD_330) ? " 3.3V" : "",
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(caps & SDHCI_CAN_VDD_300) ? " 3.0V" : "",
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((caps & SDHCI_CAN_VDD_180) &&
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(slot->opt & SDHCI_SLOT_EMBEDDED)) ? " 1.8V" : "",
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(host_caps & MMC_CAP_SIGNALING_180) ? " 1.8V" : "",
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(host_caps & MMC_CAP_SIGNALING_120) ? " 1.2V" : "",
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(host_caps & MMC_CAP_DRIVER_TYPE_A) ? "A" : "",
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(host_caps & MMC_CAP_DRIVER_TYPE_C) ? "C" : "",
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(host_caps & MMC_CAP_DRIVER_TYPE_D) ? "D" : "",
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(slot->opt & SDHCI_HAVE_DMA) ? "DMA" : "PIO",
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(slot->opt & SDHCI_SLOT_EMBEDDED) ? "embedded" :
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(slot->opt & SDHCI_NON_REMOVABLE) ? "non-removable" :
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"removable");
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if (host_caps & (MMC_CAP_MMC_DDR52 | MMC_CAP_MMC_HS200 |
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MMC_CAP_MMC_HS400 | MMC_CAP_MMC_ENH_STROBE))
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slot_sprintf(slot, s, "eMMC:%s%s%s%s\n",
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(host_caps & MMC_CAP_MMC_DDR52) ? " DDR52" : "",
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(host_caps & MMC_CAP_MMC_HS200) ? " HS200" : "",
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(host_caps & MMC_CAP_MMC_HS400) ? " HS400" : "",
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((host_caps &
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(MMC_CAP_MMC_HS400 | MMC_CAP_MMC_ENH_STROBE)) ==
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(MMC_CAP_MMC_HS400 | MMC_CAP_MMC_ENH_STROBE)) ?
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" HS400ES" : "");
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if (host_caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
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MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104))
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slot_sprintf(slot, s, "UHS-I:%s%s%s%s%s\n",
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(host_caps & MMC_CAP_UHS_SDR12) ? " SDR12" : "",
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(host_caps & MMC_CAP_UHS_SDR25) ? " SDR25" : "",
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(host_caps & MMC_CAP_UHS_SDR50) ? " SDR50" : "",
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(host_caps & MMC_CAP_UHS_SDR104) ? " SDR104" : "",
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(host_caps & MMC_CAP_UHS_DDR50) ? " DDR50" : "");
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if (slot->opt & SDHCI_TUNING_SUPPORTED)
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slot_sprintf(slot, s,
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"Re-tuning count %d secs, mode %d\n",
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slot->retune_count, slot->retune_mode + 1);
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}
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static void
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sdhci_dumpcaps(struct sdhci_slot *slot)
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{
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struct sbuf s;
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if (sbuf_new(&s, NULL, 1024, SBUF_NOWAIT | SBUF_AUTOEXTEND) == NULL) {
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slot_printf(slot, "sdhci_dumpcaps: Failed to allocate memory for sbuf\n");
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return;
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}
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sbuf_set_drain(&s, &sbuf_printf_drain, NULL);
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sdhci_dumpcaps_buf(slot, &s);
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sbuf_finish(&s);
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sbuf_delete(&s);
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}
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static int
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sdhci_syctl_dumpcaps(SYSCTL_HANDLER_ARGS)
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{
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struct sdhci_slot *slot = arg1;
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struct sbuf s;
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sbuf_new_for_sysctl(&s, NULL, 1024, req);
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sbuf_putc(&s, '\n');
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sdhci_dumpcaps_buf(slot, &s);
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sbuf_finish(&s);
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sbuf_delete(&s);
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return (0);
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}
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static uint32_t
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sdhci_tuning_intmask(const struct sdhci_slot *slot)
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{
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uint32_t intmask;
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intmask = 0;
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if (slot->opt & SDHCI_TUNING_ENABLED) {
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intmask |= SDHCI_INT_TUNEERR;
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if (slot->retune_mode == SDHCI_RETUNE_MODE_2 ||
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slot->retune_mode == SDHCI_RETUNE_MODE_3)
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intmask |= SDHCI_INT_RETUNE;
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}
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return (intmask);
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}
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static void
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sdhci_init(struct sdhci_slot *slot)
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{
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SDHCI_RESET(slot->bus, slot, SDHCI_RESET_ALL);
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/* Enable interrupts. */
|
|
slot->intmask = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
|
|
SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX |
|
|
SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT |
|
|
SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL |
|
|
SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE |
|
|
SDHCI_INT_ACMD12ERR;
|
|
|
|
if (!(slot->quirks & SDHCI_QUIRK_POLL_CARD_PRESENT) &&
|
|
!(slot->opt & SDHCI_NON_REMOVABLE)) {
|
|
slot->intmask |= SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT;
|
|
}
|
|
|
|
WR4(slot, SDHCI_INT_ENABLE, slot->intmask);
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
|
|
}
|
|
|
|
static void
|
|
sdhci_set_clock(struct sdhci_slot *slot, uint32_t clock)
|
|
{
|
|
uint32_t clk_base;
|
|
uint32_t clk_sel;
|
|
uint32_t res;
|
|
uint16_t clk;
|
|
uint16_t div;
|
|
int timeout;
|
|
|
|
if (clock == slot->clock)
|
|
return;
|
|
clock = SDHCI_SET_CLOCK(slot->bus, slot, clock);
|
|
slot->clock = clock;
|
|
|
|
/* Turn off the clock. */
|
|
clk = RD2(slot, SDHCI_CLOCK_CONTROL);
|
|
WR2(slot, SDHCI_CLOCK_CONTROL, clk & ~SDHCI_CLOCK_CARD_EN);
|
|
/* If no clock requested - leave it so. */
|
|
if (clock == 0)
|
|
return;
|
|
|
|
/* Determine the clock base frequency */
|
|
clk_base = slot->max_clk;
|
|
if (slot->quirks & SDHCI_QUIRK_BCM577XX_400KHZ_CLKSRC) {
|
|
clk_sel = RD2(slot, BCM577XX_HOST_CONTROL) &
|
|
BCM577XX_CTRL_CLKSEL_MASK;
|
|
|
|
/*
|
|
* Select clock source appropriate for the requested frequency.
|
|
*/
|
|
if ((clk_base / BCM577XX_DEFAULT_MAX_DIVIDER) > clock) {
|
|
clk_base = BCM577XX_ALT_CLOCK_BASE;
|
|
clk_sel |= (BCM577XX_CTRL_CLKSEL_64MHZ <<
|
|
BCM577XX_CTRL_CLKSEL_SHIFT);
|
|
} else {
|
|
clk_sel |= (BCM577XX_CTRL_CLKSEL_DEFAULT <<
|
|
BCM577XX_CTRL_CLKSEL_SHIFT);
|
|
}
|
|
|
|
WR2(slot, BCM577XX_HOST_CONTROL, clk_sel);
|
|
}
|
|
|
|
/* Recalculate timeout clock frequency based on the new sd clock. */
|
|
if (slot->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)
|
|
slot->timeout_clk = slot->clock / 1000;
|
|
|
|
if (slot->version < SDHCI_SPEC_300) {
|
|
/* Looking for highest freq <= clock. */
|
|
res = clk_base;
|
|
for (div = 1; div < SDHCI_200_MAX_DIVIDER; div <<= 1) {
|
|
if (res <= clock)
|
|
break;
|
|
res >>= 1;
|
|
}
|
|
/* Divider 1:1 is 0x00, 2:1 is 0x01, 256:1 is 0x80 ... */
|
|
div >>= 1;
|
|
} else {
|
|
/* Version 3.0 divisors are multiples of two up to 1023 * 2 */
|
|
if (clock >= clk_base)
|
|
div = 0;
|
|
else {
|
|
for (div = 2; div < SDHCI_300_MAX_DIVIDER; div += 2) {
|
|
if ((clk_base / div) <= clock)
|
|
break;
|
|
}
|
|
}
|
|
div >>= 1;
|
|
}
|
|
|
|
if (bootverbose || sdhci_debug)
|
|
slot_printf(slot, "Divider %d for freq %d (base %d)\n",
|
|
div, clock, clk_base);
|
|
|
|
/* Now we have got divider, set it. */
|
|
clk = (div & SDHCI_DIVIDER_MASK) << SDHCI_DIVIDER_SHIFT;
|
|
clk |= ((div >> SDHCI_DIVIDER_MASK_LEN) & SDHCI_DIVIDER_HI_MASK)
|
|
<< SDHCI_DIVIDER_HI_SHIFT;
|
|
|
|
WR2(slot, SDHCI_CLOCK_CONTROL, clk);
|
|
/* Enable clock. */
|
|
clk |= SDHCI_CLOCK_INT_EN;
|
|
WR2(slot, SDHCI_CLOCK_CONTROL, clk);
|
|
/* Wait up to 10 ms until it stabilize. */
|
|
timeout = 10;
|
|
while (!((clk = RD2(slot, SDHCI_CLOCK_CONTROL))
|
|
& SDHCI_CLOCK_INT_STABLE)) {
|
|
if (timeout == 0) {
|
|
slot_printf(slot,
|
|
"Internal clock never stabilised.\n");
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
timeout--;
|
|
DELAY(1000);
|
|
}
|
|
/* Pass clock signal to the bus. */
|
|
clk |= SDHCI_CLOCK_CARD_EN;
|
|
WR2(slot, SDHCI_CLOCK_CONTROL, clk);
|
|
}
|
|
|
|
static void
|
|
sdhci_set_power(struct sdhci_slot *slot, u_char power)
|
|
{
|
|
int i;
|
|
uint8_t pwr;
|
|
|
|
if (slot->power == power)
|
|
return;
|
|
|
|
slot->power = power;
|
|
|
|
/* Turn off the power. */
|
|
pwr = 0;
|
|
WR1(slot, SDHCI_POWER_CONTROL, pwr);
|
|
/* If power down requested - leave it so. */
|
|
if (power == 0)
|
|
return;
|
|
/* Set voltage. */
|
|
switch (1 << power) {
|
|
case MMC_OCR_LOW_VOLTAGE:
|
|
pwr |= SDHCI_POWER_180;
|
|
break;
|
|
case MMC_OCR_290_300:
|
|
case MMC_OCR_300_310:
|
|
pwr |= SDHCI_POWER_300;
|
|
break;
|
|
case MMC_OCR_320_330:
|
|
case MMC_OCR_330_340:
|
|
pwr |= SDHCI_POWER_330;
|
|
break;
|
|
}
|
|
WR1(slot, SDHCI_POWER_CONTROL, pwr);
|
|
/*
|
|
* Turn on VDD1 power. Note that at least some Intel controllers can
|
|
* fail to enable bus power on the first try after transiting from D3
|
|
* to D0, so we give them up to 2 ms.
|
|
*/
|
|
pwr |= SDHCI_POWER_ON;
|
|
for (i = 0; i < 20; i++) {
|
|
WR1(slot, SDHCI_POWER_CONTROL, pwr);
|
|
if (RD1(slot, SDHCI_POWER_CONTROL) & SDHCI_POWER_ON)
|
|
break;
|
|
DELAY(100);
|
|
}
|
|
if (!(RD1(slot, SDHCI_POWER_CONTROL) & SDHCI_POWER_ON))
|
|
slot_printf(slot, "Bus power failed to enable\n");
|
|
|
|
if (slot->quirks & SDHCI_QUIRK_INTEL_POWER_UP_RESET) {
|
|
WR1(slot, SDHCI_POWER_CONTROL, pwr | 0x10);
|
|
DELAY(10);
|
|
WR1(slot, SDHCI_POWER_CONTROL, pwr);
|
|
DELAY(300);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_read_block_pio(struct sdhci_slot *slot)
|
|
{
|
|
uint32_t data;
|
|
char *buffer;
|
|
size_t left;
|
|
|
|
buffer = slot->curcmd->data->data;
|
|
buffer += slot->offset;
|
|
/* Transfer one block at a time. */
|
|
#ifdef MMCCAM
|
|
if (slot->curcmd->data->flags & MMC_DATA_BLOCK_SIZE)
|
|
left = min(slot->curcmd->data->block_size,
|
|
slot->curcmd->data->len - slot->offset);
|
|
else
|
|
#endif
|
|
left = min(512, slot->curcmd->data->len - slot->offset);
|
|
slot->offset += left;
|
|
|
|
/* If we are too fast, broken controllers return zeroes. */
|
|
if (slot->quirks & SDHCI_QUIRK_BROKEN_TIMINGS)
|
|
DELAY(10);
|
|
/* Handle unaligned and aligned buffer cases. */
|
|
if ((intptr_t)buffer & 3) {
|
|
while (left > 3) {
|
|
data = RD4(slot, SDHCI_BUFFER);
|
|
buffer[0] = data;
|
|
buffer[1] = (data >> 8);
|
|
buffer[2] = (data >> 16);
|
|
buffer[3] = (data >> 24);
|
|
buffer += 4;
|
|
left -= 4;
|
|
}
|
|
} else {
|
|
RD_MULTI_4(slot, SDHCI_BUFFER,
|
|
(uint32_t *)buffer, left >> 2);
|
|
left &= 3;
|
|
}
|
|
/* Handle uneven size case. */
|
|
if (left > 0) {
|
|
data = RD4(slot, SDHCI_BUFFER);
|
|
while (left > 0) {
|
|
*(buffer++) = data;
|
|
data >>= 8;
|
|
left--;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_write_block_pio(struct sdhci_slot *slot)
|
|
{
|
|
uint32_t data = 0;
|
|
char *buffer;
|
|
size_t left;
|
|
|
|
buffer = slot->curcmd->data->data;
|
|
buffer += slot->offset;
|
|
/* Transfer one block at a time. */
|
|
#ifdef MMCCAM
|
|
if (slot->curcmd->data->flags & MMC_DATA_BLOCK_SIZE) {
|
|
left = min(slot->curcmd->data->block_size,
|
|
slot->curcmd->data->len - slot->offset);
|
|
} else
|
|
#endif
|
|
left = min(512, slot->curcmd->data->len - slot->offset);
|
|
slot->offset += left;
|
|
|
|
/* Handle unaligned and aligned buffer cases. */
|
|
if ((intptr_t)buffer & 3) {
|
|
while (left > 3) {
|
|
data = buffer[0] +
|
|
(buffer[1] << 8) +
|
|
(buffer[2] << 16) +
|
|
(buffer[3] << 24);
|
|
left -= 4;
|
|
buffer += 4;
|
|
WR4(slot, SDHCI_BUFFER, data);
|
|
}
|
|
} else {
|
|
WR_MULTI_4(slot, SDHCI_BUFFER,
|
|
(uint32_t *)buffer, left >> 2);
|
|
left &= 3;
|
|
}
|
|
/* Handle uneven size case. */
|
|
if (left > 0) {
|
|
while (left > 0) {
|
|
data <<= 8;
|
|
data += *(buffer++);
|
|
left--;
|
|
}
|
|
WR4(slot, SDHCI_BUFFER, data);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_transfer_pio(struct sdhci_slot *slot)
|
|
{
|
|
|
|
/* Read as many blocks as possible. */
|
|
if (slot->curcmd->data->flags & MMC_DATA_READ) {
|
|
while (RD4(slot, SDHCI_PRESENT_STATE) &
|
|
SDHCI_DATA_AVAILABLE) {
|
|
sdhci_read_block_pio(slot);
|
|
if (slot->offset >= slot->curcmd->data->len)
|
|
break;
|
|
}
|
|
} else {
|
|
while (RD4(slot, SDHCI_PRESENT_STATE) &
|
|
SDHCI_SPACE_AVAILABLE) {
|
|
sdhci_write_block_pio(slot);
|
|
if (slot->offset >= slot->curcmd->data->len)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_card_task(void *arg, int pending __unused)
|
|
{
|
|
struct sdhci_slot *slot = arg;
|
|
#ifndef MMCCAM
|
|
device_t d;
|
|
#endif
|
|
|
|
SDHCI_LOCK(slot);
|
|
if (SDHCI_GET_CARD_PRESENT(slot->bus, slot)) {
|
|
#ifdef MMCCAM
|
|
if (slot->card_present == 0) {
|
|
#else
|
|
if (slot->dev == NULL) {
|
|
#endif
|
|
/* If card is present - attach mmc bus. */
|
|
if (bootverbose || sdhci_debug)
|
|
slot_printf(slot, "Card inserted\n");
|
|
#ifdef MMCCAM
|
|
slot->card_present = 1;
|
|
mmccam_start_discovery(slot->sim);
|
|
SDHCI_UNLOCK(slot);
|
|
#else
|
|
d = slot->dev = device_add_child(slot->bus, "mmc", -1);
|
|
SDHCI_UNLOCK(slot);
|
|
if (d) {
|
|
device_set_ivars(d, slot);
|
|
(void)device_probe_and_attach(d);
|
|
}
|
|
#endif
|
|
} else
|
|
SDHCI_UNLOCK(slot);
|
|
} else {
|
|
#ifdef MMCCAM
|
|
if (slot->card_present == 1) {
|
|
#else
|
|
if (slot->dev != NULL) {
|
|
d = slot->dev;
|
|
#endif
|
|
/* If no card present - detach mmc bus. */
|
|
if (bootverbose || sdhci_debug)
|
|
slot_printf(slot, "Card removed\n");
|
|
slot->dev = NULL;
|
|
#ifdef MMCCAM
|
|
slot->card_present = 0;
|
|
mmccam_start_discovery(slot->sim);
|
|
SDHCI_UNLOCK(slot);
|
|
#else
|
|
slot->intmask &= ~sdhci_tuning_intmask(slot);
|
|
WR4(slot, SDHCI_INT_ENABLE, slot->intmask);
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
|
|
slot->opt &= ~SDHCI_TUNING_ENABLED;
|
|
SDHCI_UNLOCK(slot);
|
|
callout_drain(&slot->retune_callout);
|
|
device_delete_child(slot->bus, d);
|
|
#endif
|
|
} else
|
|
SDHCI_UNLOCK(slot);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_handle_card_present_locked(struct sdhci_slot *slot, bool is_present)
|
|
{
|
|
bool was_present;
|
|
|
|
/*
|
|
* If there was no card and now there is one, schedule the task to
|
|
* create the child device after a short delay. The delay is to
|
|
* debounce the card insert (sometimes the card detect pin stabilizes
|
|
* before the other pins have made good contact).
|
|
*
|
|
* If there was a card present and now it's gone, immediately schedule
|
|
* the task to delete the child device. No debouncing -- gone is gone,
|
|
* because once power is removed, a full card re-init is needed, and
|
|
* that happens by deleting and recreating the child device.
|
|
*/
|
|
#ifdef MMCCAM
|
|
was_present = slot->card_present;
|
|
#else
|
|
was_present = slot->dev != NULL;
|
|
#endif
|
|
if (!was_present && is_present) {
|
|
taskqueue_enqueue_timeout(taskqueue_swi_giant,
|
|
&slot->card_delayed_task, -SDHCI_INSERT_DELAY_TICKS);
|
|
} else if (was_present && !is_present) {
|
|
taskqueue_enqueue(taskqueue_swi_giant, &slot->card_task);
|
|
}
|
|
}
|
|
|
|
void
|
|
sdhci_handle_card_present(struct sdhci_slot *slot, bool is_present)
|
|
{
|
|
|
|
SDHCI_LOCK(slot);
|
|
sdhci_handle_card_present_locked(slot, is_present);
|
|
SDHCI_UNLOCK(slot);
|
|
}
|
|
|
|
static void
|
|
sdhci_card_poll(void *arg)
|
|
{
|
|
struct sdhci_slot *slot = arg;
|
|
|
|
sdhci_handle_card_present(slot,
|
|
SDHCI_GET_CARD_PRESENT(slot->bus, slot));
|
|
callout_reset(&slot->card_poll_callout, SDHCI_CARD_PRESENT_TICKS,
|
|
sdhci_card_poll, slot);
|
|
}
|
|
|
|
static int
|
|
sdhci_dma_alloc(struct sdhci_slot *slot)
|
|
{
|
|
int err;
|
|
|
|
if (!(slot->quirks & SDHCI_QUIRK_BROKEN_SDMA_BOUNDARY)) {
|
|
if (maxphys <= 1024 * 4)
|
|
slot->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_4K;
|
|
else if (maxphys <= 1024 * 8)
|
|
slot->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_8K;
|
|
else if (maxphys <= 1024 * 16)
|
|
slot->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_16K;
|
|
else if (maxphys <= 1024 * 32)
|
|
slot->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_32K;
|
|
else if (maxphys <= 1024 * 64)
|
|
slot->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_64K;
|
|
else if (maxphys <= 1024 * 128)
|
|
slot->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_128K;
|
|
else if (maxphys <= 1024 * 256)
|
|
slot->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_256K;
|
|
else
|
|
slot->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_512K;
|
|
}
|
|
slot->sdma_bbufsz = SDHCI_SDMA_BNDRY_TO_BBUFSZ(slot->sdma_boundary);
|
|
|
|
/*
|
|
* Allocate the DMA tag for an SDMA bounce buffer.
|
|
* Note that the SDHCI specification doesn't state any alignment
|
|
* constraint for the SDMA system address. However, controllers
|
|
* typically ignore the SDMA boundary bits in SDHCI_DMA_ADDRESS when
|
|
* forming the actual address of data, requiring the SDMA buffer to
|
|
* be aligned to the SDMA boundary.
|
|
*/
|
|
err = bus_dma_tag_create(bus_get_dma_tag(slot->bus), slot->sdma_bbufsz,
|
|
0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
|
|
slot->sdma_bbufsz, 1, slot->sdma_bbufsz, BUS_DMA_ALLOCNOW,
|
|
NULL, NULL, &slot->dmatag);
|
|
if (err != 0) {
|
|
slot_printf(slot, "Can't create DMA tag for SDMA\n");
|
|
return (err);
|
|
}
|
|
/* Allocate DMA memory for the SDMA bounce buffer. */
|
|
err = bus_dmamem_alloc(slot->dmatag, (void **)&slot->dmamem,
|
|
BUS_DMA_NOWAIT, &slot->dmamap);
|
|
if (err != 0) {
|
|
slot_printf(slot, "Can't alloc DMA memory for SDMA\n");
|
|
bus_dma_tag_destroy(slot->dmatag);
|
|
return (err);
|
|
}
|
|
/* Map the memory of the SDMA bounce buffer. */
|
|
err = bus_dmamap_load(slot->dmatag, slot->dmamap,
|
|
(void *)slot->dmamem, slot->sdma_bbufsz, sdhci_getaddr,
|
|
&slot->paddr, 0);
|
|
if (err != 0 || slot->paddr == 0) {
|
|
slot_printf(slot, "Can't load DMA memory for SDMA\n");
|
|
bus_dmamem_free(slot->dmatag, slot->dmamem, slot->dmamap);
|
|
bus_dma_tag_destroy(slot->dmatag);
|
|
if (err)
|
|
return (err);
|
|
else
|
|
return (EFAULT);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
sdhci_dma_free(struct sdhci_slot *slot)
|
|
{
|
|
|
|
bus_dmamap_unload(slot->dmatag, slot->dmamap);
|
|
bus_dmamem_free(slot->dmatag, slot->dmamem, slot->dmamap);
|
|
bus_dma_tag_destroy(slot->dmatag);
|
|
}
|
|
|
|
int
|
|
sdhci_init_slot(device_t dev, struct sdhci_slot *slot, int num)
|
|
{
|
|
kobjop_desc_t kobj_desc;
|
|
kobj_method_t *kobj_method;
|
|
uint32_t caps, caps2, freq, host_caps;
|
|
int err;
|
|
char node_name[8];
|
|
struct sysctl_oid *node_oid;
|
|
|
|
SDHCI_LOCK_INIT(slot);
|
|
|
|
slot->num = num;
|
|
slot->bus = dev;
|
|
|
|
slot->version = (RD2(slot, SDHCI_HOST_VERSION)
|
|
>> SDHCI_SPEC_VER_SHIFT) & SDHCI_SPEC_VER_MASK;
|
|
if (slot->quirks & SDHCI_QUIRK_MISSING_CAPS) {
|
|
caps = slot->caps;
|
|
caps2 = slot->caps2;
|
|
} else {
|
|
caps = RD4(slot, SDHCI_CAPABILITIES);
|
|
if (slot->version >= SDHCI_SPEC_300)
|
|
caps2 = RD4(slot, SDHCI_CAPABILITIES2);
|
|
else
|
|
caps2 = 0;
|
|
}
|
|
if (slot->version >= SDHCI_SPEC_300) {
|
|
if ((caps & SDHCI_SLOTTYPE_MASK) != SDHCI_SLOTTYPE_REMOVABLE &&
|
|
(caps & SDHCI_SLOTTYPE_MASK) != SDHCI_SLOTTYPE_EMBEDDED) {
|
|
slot_printf(slot,
|
|
"Driver doesn't support shared bus slots\n");
|
|
SDHCI_LOCK_DESTROY(slot);
|
|
return (ENXIO);
|
|
} else if ((caps & SDHCI_SLOTTYPE_MASK) ==
|
|
SDHCI_SLOTTYPE_EMBEDDED) {
|
|
slot->opt |= SDHCI_SLOT_EMBEDDED | SDHCI_NON_REMOVABLE;
|
|
}
|
|
}
|
|
/* Calculate base clock frequency. */
|
|
if (slot->version >= SDHCI_SPEC_300)
|
|
freq = (caps & SDHCI_CLOCK_V3_BASE_MASK) >>
|
|
SDHCI_CLOCK_BASE_SHIFT;
|
|
else
|
|
freq = (caps & SDHCI_CLOCK_BASE_MASK) >>
|
|
SDHCI_CLOCK_BASE_SHIFT;
|
|
if (freq != 0)
|
|
slot->max_clk = freq * 1000000;
|
|
/*
|
|
* If the frequency wasn't in the capabilities and the hardware driver
|
|
* hasn't already set max_clk we're probably not going to work right
|
|
* with an assumption, so complain about it.
|
|
*/
|
|
if (slot->max_clk == 0) {
|
|
slot->max_clk = SDHCI_DEFAULT_MAX_FREQ * 1000000;
|
|
slot_printf(slot, "Hardware doesn't specify base clock "
|
|
"frequency, using %dMHz as default.\n",
|
|
SDHCI_DEFAULT_MAX_FREQ);
|
|
}
|
|
/* Calculate/set timeout clock frequency. */
|
|
if (slot->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) {
|
|
slot->timeout_clk = slot->max_clk / 1000;
|
|
} else if (slot->quirks & SDHCI_QUIRK_DATA_TIMEOUT_1MHZ) {
|
|
slot->timeout_clk = 1000;
|
|
} else {
|
|
slot->timeout_clk = (caps & SDHCI_TIMEOUT_CLK_MASK) >>
|
|
SDHCI_TIMEOUT_CLK_SHIFT;
|
|
if (caps & SDHCI_TIMEOUT_CLK_UNIT)
|
|
slot->timeout_clk *= 1000;
|
|
}
|
|
/*
|
|
* If the frequency wasn't in the capabilities and the hardware driver
|
|
* hasn't already set timeout_clk we'll probably work okay using the
|
|
* max timeout, but still mention it.
|
|
*/
|
|
if (slot->timeout_clk == 0) {
|
|
slot_printf(slot, "Hardware doesn't specify timeout clock "
|
|
"frequency, setting BROKEN_TIMEOUT quirk.\n");
|
|
slot->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
|
|
}
|
|
|
|
slot->host.f_min = SDHCI_MIN_FREQ(slot->bus, slot);
|
|
slot->host.f_max = slot->max_clk;
|
|
slot->host.host_ocr = 0;
|
|
if (caps & SDHCI_CAN_VDD_330)
|
|
slot->host.host_ocr |= MMC_OCR_320_330 | MMC_OCR_330_340;
|
|
if (caps & SDHCI_CAN_VDD_300)
|
|
slot->host.host_ocr |= MMC_OCR_290_300 | MMC_OCR_300_310;
|
|
/*
|
|
* 1.8V VDD is not supposed to be used for removable cards. Hardware
|
|
* prior to v3.0 had no way to indicate embedded slots, but did
|
|
* sometimes support 1.8v for non-removable devices.
|
|
*/
|
|
if ((caps & SDHCI_CAN_VDD_180) && (slot->version < SDHCI_SPEC_300 ||
|
|
(slot->opt & SDHCI_SLOT_EMBEDDED)))
|
|
slot->host.host_ocr |= MMC_OCR_LOW_VOLTAGE;
|
|
if (slot->host.host_ocr == 0) {
|
|
slot_printf(slot, "Hardware doesn't report any "
|
|
"support voltages.\n");
|
|
}
|
|
|
|
host_caps = slot->host.caps;
|
|
host_caps |= MMC_CAP_4_BIT_DATA;
|
|
if (caps & SDHCI_CAN_DO_8BITBUS)
|
|
host_caps |= MMC_CAP_8_BIT_DATA;
|
|
if (caps & SDHCI_CAN_DO_HISPD)
|
|
host_caps |= MMC_CAP_HSPEED;
|
|
if (slot->quirks & SDHCI_QUIRK_BOOT_NOACC)
|
|
host_caps |= MMC_CAP_BOOT_NOACC;
|
|
if (slot->quirks & SDHCI_QUIRK_WAIT_WHILE_BUSY)
|
|
host_caps |= MMC_CAP_WAIT_WHILE_BUSY;
|
|
|
|
/* Determine supported UHS-I and eMMC modes. */
|
|
if (caps2 & (SDHCI_CAN_SDR50 | SDHCI_CAN_SDR104 | SDHCI_CAN_DDR50))
|
|
host_caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25;
|
|
if (caps2 & SDHCI_CAN_SDR104) {
|
|
host_caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50;
|
|
if (!(slot->quirks & SDHCI_QUIRK_BROKEN_MMC_HS200))
|
|
host_caps |= MMC_CAP_MMC_HS200;
|
|
} else if (caps2 & SDHCI_CAN_SDR50)
|
|
host_caps |= MMC_CAP_UHS_SDR50;
|
|
if (caps2 & SDHCI_CAN_DDR50 &&
|
|
!(slot->quirks & SDHCI_QUIRK_BROKEN_UHS_DDR50))
|
|
host_caps |= MMC_CAP_UHS_DDR50;
|
|
if (slot->quirks & SDHCI_QUIRK_MMC_DDR52)
|
|
host_caps |= MMC_CAP_MMC_DDR52;
|
|
if (slot->quirks & SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 &&
|
|
caps2 & SDHCI_CAN_MMC_HS400)
|
|
host_caps |= MMC_CAP_MMC_HS400;
|
|
if (slot->quirks & SDHCI_QUIRK_MMC_HS400_IF_CAN_SDR104 &&
|
|
caps2 & SDHCI_CAN_SDR104)
|
|
host_caps |= MMC_CAP_MMC_HS400;
|
|
|
|
/*
|
|
* Disable UHS-I and eMMC modes if the set_uhs_timing method is the
|
|
* default NULL implementation.
|
|
*/
|
|
kobj_desc = &sdhci_set_uhs_timing_desc;
|
|
kobj_method = kobj_lookup_method(((kobj_t)dev)->ops->cls, NULL,
|
|
kobj_desc);
|
|
if (kobj_method == &kobj_desc->deflt)
|
|
host_caps &= ~(MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
|
|
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_DDR50 | MMC_CAP_UHS_SDR104 |
|
|
MMC_CAP_MMC_DDR52 | MMC_CAP_MMC_HS200 | MMC_CAP_MMC_HS400);
|
|
|
|
#define SDHCI_CAP_MODES_TUNING(caps2) \
|
|
(((caps2) & SDHCI_TUNE_SDR50 ? MMC_CAP_UHS_SDR50 : 0) | \
|
|
MMC_CAP_UHS_DDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_MMC_HS200 | \
|
|
MMC_CAP_MMC_HS400)
|
|
|
|
/*
|
|
* Disable UHS-I and eMMC modes that require (re-)tuning if either
|
|
* the tune or re-tune method is the default NULL implementation.
|
|
*/
|
|
kobj_desc = &mmcbr_tune_desc;
|
|
kobj_method = kobj_lookup_method(((kobj_t)dev)->ops->cls, NULL,
|
|
kobj_desc);
|
|
if (kobj_method == &kobj_desc->deflt)
|
|
goto no_tuning;
|
|
kobj_desc = &mmcbr_retune_desc;
|
|
kobj_method = kobj_lookup_method(((kobj_t)dev)->ops->cls, NULL,
|
|
kobj_desc);
|
|
if (kobj_method == &kobj_desc->deflt) {
|
|
no_tuning:
|
|
host_caps &= ~(SDHCI_CAP_MODES_TUNING(caps2));
|
|
}
|
|
|
|
/* Allocate tuning structures and determine tuning parameters. */
|
|
if (host_caps & SDHCI_CAP_MODES_TUNING(caps2)) {
|
|
slot->opt |= SDHCI_TUNING_SUPPORTED;
|
|
slot->tune_req = malloc(sizeof(*slot->tune_req), M_DEVBUF,
|
|
M_WAITOK);
|
|
slot->tune_cmd = malloc(sizeof(*slot->tune_cmd), M_DEVBUF,
|
|
M_WAITOK);
|
|
slot->tune_data = malloc(sizeof(*slot->tune_data), M_DEVBUF,
|
|
M_WAITOK);
|
|
if (caps2 & SDHCI_TUNE_SDR50)
|
|
slot->opt |= SDHCI_SDR50_NEEDS_TUNING;
|
|
slot->retune_mode = (caps2 & SDHCI_RETUNE_MODES_MASK) >>
|
|
SDHCI_RETUNE_MODES_SHIFT;
|
|
if (slot->retune_mode == SDHCI_RETUNE_MODE_1) {
|
|
slot->retune_count = (caps2 & SDHCI_RETUNE_CNT_MASK) >>
|
|
SDHCI_RETUNE_CNT_SHIFT;
|
|
if (slot->retune_count > 0xb) {
|
|
slot_printf(slot, "Unknown re-tuning count "
|
|
"%x, using 1 sec\n", slot->retune_count);
|
|
slot->retune_count = 1;
|
|
} else if (slot->retune_count != 0)
|
|
slot->retune_count =
|
|
1 << (slot->retune_count - 1);
|
|
}
|
|
}
|
|
|
|
#undef SDHCI_CAP_MODES_TUNING
|
|
|
|
/* Determine supported VCCQ signaling levels. */
|
|
host_caps |= MMC_CAP_SIGNALING_330;
|
|
if (host_caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
|
|
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_DDR50 | MMC_CAP_UHS_SDR104 |
|
|
MMC_CAP_MMC_DDR52_180 | MMC_CAP_MMC_HS200_180 |
|
|
MMC_CAP_MMC_HS400_180))
|
|
host_caps |= MMC_CAP_SIGNALING_120 | MMC_CAP_SIGNALING_180;
|
|
|
|
/*
|
|
* Disable 1.2 V and 1.8 V signaling if the switch_vccq method is the
|
|
* default NULL implementation. Disable 1.2 V support if it's the
|
|
* generic SDHCI implementation.
|
|
*/
|
|
kobj_desc = &mmcbr_switch_vccq_desc;
|
|
kobj_method = kobj_lookup_method(((kobj_t)dev)->ops->cls, NULL,
|
|
kobj_desc);
|
|
if (kobj_method == &kobj_desc->deflt)
|
|
host_caps &= ~(MMC_CAP_SIGNALING_120 | MMC_CAP_SIGNALING_180);
|
|
else if (kobj_method->func == (kobjop_t)sdhci_generic_switch_vccq)
|
|
host_caps &= ~MMC_CAP_SIGNALING_120;
|
|
|
|
/* Determine supported driver types (type B is always mandatory). */
|
|
if (caps2 & SDHCI_CAN_DRIVE_TYPE_A)
|
|
host_caps |= MMC_CAP_DRIVER_TYPE_A;
|
|
if (caps2 & SDHCI_CAN_DRIVE_TYPE_C)
|
|
host_caps |= MMC_CAP_DRIVER_TYPE_C;
|
|
if (caps2 & SDHCI_CAN_DRIVE_TYPE_D)
|
|
host_caps |= MMC_CAP_DRIVER_TYPE_D;
|
|
slot->host.caps = host_caps;
|
|
|
|
/* Decide if we have usable DMA. */
|
|
if (caps & SDHCI_CAN_DO_DMA)
|
|
slot->opt |= SDHCI_HAVE_DMA;
|
|
|
|
if (slot->quirks & SDHCI_QUIRK_BROKEN_DMA)
|
|
slot->opt &= ~SDHCI_HAVE_DMA;
|
|
if (slot->quirks & SDHCI_QUIRK_FORCE_DMA)
|
|
slot->opt |= SDHCI_HAVE_DMA;
|
|
if (slot->quirks & SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE)
|
|
slot->opt |= SDHCI_NON_REMOVABLE;
|
|
|
|
/*
|
|
* Use platform-provided transfer backend
|
|
* with PIO as a fallback mechanism
|
|
*/
|
|
if (slot->opt & SDHCI_PLATFORM_TRANSFER)
|
|
slot->opt &= ~SDHCI_HAVE_DMA;
|
|
|
|
if (slot->opt & SDHCI_HAVE_DMA) {
|
|
err = sdhci_dma_alloc(slot);
|
|
if (err != 0) {
|
|
if (slot->opt & SDHCI_TUNING_SUPPORTED) {
|
|
free(slot->tune_req, M_DEVBUF);
|
|
free(slot->tune_cmd, M_DEVBUF);
|
|
free(slot->tune_data, M_DEVBUF);
|
|
}
|
|
SDHCI_LOCK_DESTROY(slot);
|
|
return (err);
|
|
}
|
|
}
|
|
|
|
if (bootverbose || sdhci_debug) {
|
|
sdhci_dumpcaps(slot);
|
|
sdhci_dumpregs(slot);
|
|
}
|
|
|
|
slot->timeout = 10;
|
|
SYSCTL_ADD_INT(device_get_sysctl_ctx(slot->bus),
|
|
SYSCTL_CHILDREN(device_get_sysctl_tree(slot->bus)), OID_AUTO,
|
|
"timeout", CTLFLAG_RWTUN, &slot->timeout, 0,
|
|
"Maximum timeout for SDHCI transfers (in secs)");
|
|
TASK_INIT(&slot->card_task, 0, sdhci_card_task, slot);
|
|
TIMEOUT_TASK_INIT(taskqueue_swi_giant, &slot->card_delayed_task, 0,
|
|
sdhci_card_task, slot);
|
|
callout_init(&slot->card_poll_callout, 1);
|
|
callout_init_mtx(&slot->timeout_callout, &slot->mtx, 0);
|
|
callout_init_mtx(&slot->retune_callout, &slot->mtx, 0);
|
|
|
|
if ((slot->quirks & SDHCI_QUIRK_POLL_CARD_PRESENT) &&
|
|
!(slot->opt & SDHCI_NON_REMOVABLE)) {
|
|
callout_reset(&slot->card_poll_callout,
|
|
SDHCI_CARD_PRESENT_TICKS, sdhci_card_poll, slot);
|
|
}
|
|
|
|
sdhci_init(slot);
|
|
|
|
snprintf(node_name, sizeof(node_name), "slot%d", slot->num);
|
|
|
|
node_oid = SYSCTL_ADD_NODE(device_get_sysctl_ctx(dev),
|
|
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
|
|
OID_AUTO, node_name, CTLFLAG_RW, 0, "slot specific node");
|
|
|
|
node_oid = SYSCTL_ADD_NODE(device_get_sysctl_ctx(dev),
|
|
SYSCTL_CHILDREN(node_oid), OID_AUTO, "debug", CTLFLAG_RW, 0,
|
|
"Debugging node");
|
|
|
|
SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), SYSCTL_CHILDREN(node_oid),
|
|
OID_AUTO, "dumpregs", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
|
|
slot, 0, &sdhci_syctl_dumpregs,
|
|
"A", "Dump SDHCI registers");
|
|
|
|
SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), SYSCTL_CHILDREN(node_oid),
|
|
OID_AUTO, "dumpcaps", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
|
|
slot, 0, &sdhci_syctl_dumpcaps,
|
|
"A", "Dump SDHCI capabilites");
|
|
|
|
return (0);
|
|
}
|
|
|
|
#ifndef MMCCAM
|
|
void
|
|
sdhci_start_slot(struct sdhci_slot *slot)
|
|
{
|
|
|
|
sdhci_card_task(slot, 0);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
sdhci_cleanup_slot(struct sdhci_slot *slot)
|
|
{
|
|
device_t d;
|
|
|
|
callout_drain(&slot->timeout_callout);
|
|
callout_drain(&slot->card_poll_callout);
|
|
callout_drain(&slot->retune_callout);
|
|
taskqueue_drain(taskqueue_swi_giant, &slot->card_task);
|
|
taskqueue_drain_timeout(taskqueue_swi_giant, &slot->card_delayed_task);
|
|
|
|
SDHCI_LOCK(slot);
|
|
d = slot->dev;
|
|
slot->dev = NULL;
|
|
SDHCI_UNLOCK(slot);
|
|
if (d != NULL)
|
|
device_delete_child(slot->bus, d);
|
|
|
|
SDHCI_LOCK(slot);
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_ALL);
|
|
SDHCI_UNLOCK(slot);
|
|
if (slot->opt & SDHCI_HAVE_DMA)
|
|
sdhci_dma_free(slot);
|
|
if (slot->opt & SDHCI_TUNING_SUPPORTED) {
|
|
free(slot->tune_req, M_DEVBUF);
|
|
free(slot->tune_cmd, M_DEVBUF);
|
|
free(slot->tune_data, M_DEVBUF);
|
|
}
|
|
|
|
SDHCI_LOCK_DESTROY(slot);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_suspend(struct sdhci_slot *slot)
|
|
{
|
|
|
|
/*
|
|
* We expect the MMC layer to issue initial tuning after resume.
|
|
* Otherwise, we'd need to indicate re-tuning including circuit reset
|
|
* being required at least for re-tuning modes 1 and 2 ourselves.
|
|
*/
|
|
callout_drain(&slot->retune_callout);
|
|
SDHCI_LOCK(slot);
|
|
slot->opt &= ~SDHCI_TUNING_ENABLED;
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_ALL);
|
|
SDHCI_UNLOCK(slot);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_resume(struct sdhci_slot *slot)
|
|
{
|
|
|
|
SDHCI_LOCK(slot);
|
|
sdhci_init(slot);
|
|
SDHCI_UNLOCK(slot);
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
sdhci_generic_reset(device_t brdev __unused, struct sdhci_slot *slot,
|
|
uint8_t mask)
|
|
{
|
|
int timeout;
|
|
uint32_t clock;
|
|
|
|
if (slot->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
|
|
if (!SDHCI_GET_CARD_PRESENT(slot->bus, slot))
|
|
return;
|
|
}
|
|
|
|
/* Some controllers need this kick or reset won't work. */
|
|
if ((mask & SDHCI_RESET_ALL) == 0 &&
|
|
(slot->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET)) {
|
|
/* This is to force an update */
|
|
clock = slot->clock;
|
|
slot->clock = 0;
|
|
sdhci_set_clock(slot, clock);
|
|
}
|
|
|
|
if (mask & SDHCI_RESET_ALL) {
|
|
slot->clock = 0;
|
|
slot->power = 0;
|
|
}
|
|
|
|
WR1(slot, SDHCI_SOFTWARE_RESET, mask);
|
|
|
|
if (slot->quirks & SDHCI_QUIRK_WAITFOR_RESET_ASSERTED) {
|
|
/*
|
|
* Resets on TI OMAPs and AM335x are incompatible with SDHCI
|
|
* specification. The reset bit has internal propagation delay,
|
|
* so a fast read after write returns 0 even if reset process is
|
|
* in progress. The workaround is to poll for 1 before polling
|
|
* for 0. In the worst case, if we miss seeing it asserted the
|
|
* time we spent waiting is enough to ensure the reset finishes.
|
|
*/
|
|
timeout = 10000;
|
|
while ((RD1(slot, SDHCI_SOFTWARE_RESET) & mask) != mask) {
|
|
if (timeout <= 0)
|
|
break;
|
|
timeout--;
|
|
DELAY(1);
|
|
}
|
|
}
|
|
|
|
/* Wait max 100 ms */
|
|
timeout = 10000;
|
|
/* Controller clears the bits when it's done */
|
|
while (RD1(slot, SDHCI_SOFTWARE_RESET) & mask) {
|
|
if (timeout <= 0) {
|
|
slot_printf(slot, "Reset 0x%x never completed.\n",
|
|
mask);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
timeout--;
|
|
DELAY(10);
|
|
}
|
|
}
|
|
|
|
uint32_t
|
|
sdhci_generic_min_freq(device_t brdev __unused, struct sdhci_slot *slot)
|
|
{
|
|
|
|
if (slot->version >= SDHCI_SPEC_300)
|
|
return (slot->max_clk / SDHCI_300_MAX_DIVIDER);
|
|
else
|
|
return (slot->max_clk / SDHCI_200_MAX_DIVIDER);
|
|
}
|
|
|
|
bool
|
|
sdhci_generic_get_card_present(device_t brdev __unused, struct sdhci_slot *slot)
|
|
{
|
|
|
|
if (slot->opt & SDHCI_NON_REMOVABLE)
|
|
return true;
|
|
|
|
return (RD4(slot, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
|
|
}
|
|
|
|
void
|
|
sdhci_generic_set_uhs_timing(device_t brdev __unused, struct sdhci_slot *slot)
|
|
{
|
|
const struct mmc_ios *ios;
|
|
uint16_t hostctrl2;
|
|
|
|
if (slot->version < SDHCI_SPEC_300)
|
|
return;
|
|
|
|
SDHCI_ASSERT_LOCKED(slot);
|
|
ios = &slot->host.ios;
|
|
sdhci_set_clock(slot, 0);
|
|
hostctrl2 = RD2(slot, SDHCI_HOST_CONTROL2);
|
|
hostctrl2 &= ~SDHCI_CTRL2_UHS_MASK;
|
|
if (ios->clock > SD_SDR50_MAX) {
|
|
if (ios->timing == bus_timing_mmc_hs400 ||
|
|
ios->timing == bus_timing_mmc_hs400es)
|
|
hostctrl2 |= SDHCI_CTRL2_MMC_HS400;
|
|
else
|
|
hostctrl2 |= SDHCI_CTRL2_UHS_SDR104;
|
|
}
|
|
else if (ios->clock > SD_SDR25_MAX)
|
|
hostctrl2 |= SDHCI_CTRL2_UHS_SDR50;
|
|
else if (ios->clock > SD_SDR12_MAX) {
|
|
if (ios->timing == bus_timing_uhs_ddr50 ||
|
|
ios->timing == bus_timing_mmc_ddr52)
|
|
hostctrl2 |= SDHCI_CTRL2_UHS_DDR50;
|
|
else
|
|
hostctrl2 |= SDHCI_CTRL2_UHS_SDR25;
|
|
} else if (ios->clock > SD_MMC_CARD_ID_FREQUENCY)
|
|
hostctrl2 |= SDHCI_CTRL2_UHS_SDR12;
|
|
WR2(slot, SDHCI_HOST_CONTROL2, hostctrl2);
|
|
sdhci_set_clock(slot, ios->clock);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_update_ios(device_t brdev, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
struct mmc_ios *ios = &slot->host.ios;
|
|
|
|
SDHCI_LOCK(slot);
|
|
/* Do full reset on bus power down to clear from any state. */
|
|
if (ios->power_mode == power_off) {
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, 0);
|
|
sdhci_init(slot);
|
|
}
|
|
/* Configure the bus. */
|
|
sdhci_set_clock(slot, ios->clock);
|
|
sdhci_set_power(slot, (ios->power_mode == power_off) ? 0 : ios->vdd);
|
|
if (ios->bus_width == bus_width_8) {
|
|
slot->hostctrl |= SDHCI_CTRL_8BITBUS;
|
|
slot->hostctrl &= ~SDHCI_CTRL_4BITBUS;
|
|
} else if (ios->bus_width == bus_width_4) {
|
|
slot->hostctrl &= ~SDHCI_CTRL_8BITBUS;
|
|
slot->hostctrl |= SDHCI_CTRL_4BITBUS;
|
|
} else if (ios->bus_width == bus_width_1) {
|
|
slot->hostctrl &= ~SDHCI_CTRL_8BITBUS;
|
|
slot->hostctrl &= ~SDHCI_CTRL_4BITBUS;
|
|
} else {
|
|
panic("Invalid bus width: %d", ios->bus_width);
|
|
}
|
|
if (ios->clock > SD_SDR12_MAX &&
|
|
!(slot->quirks & SDHCI_QUIRK_DONT_SET_HISPD_BIT))
|
|
slot->hostctrl |= SDHCI_CTRL_HISPD;
|
|
else
|
|
slot->hostctrl &= ~SDHCI_CTRL_HISPD;
|
|
WR1(slot, SDHCI_HOST_CONTROL, slot->hostctrl);
|
|
SDHCI_SET_UHS_TIMING(brdev, slot);
|
|
/* Some controllers like reset after bus changes. */
|
|
if (slot->quirks & SDHCI_QUIRK_RESET_ON_IOS)
|
|
SDHCI_RESET(slot->bus, slot,
|
|
SDHCI_RESET_CMD | SDHCI_RESET_DATA);
|
|
|
|
SDHCI_UNLOCK(slot);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_switch_vccq(device_t brdev __unused, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
enum mmc_vccq vccq;
|
|
int err;
|
|
uint16_t hostctrl2;
|
|
|
|
if (slot->version < SDHCI_SPEC_300)
|
|
return (0);
|
|
|
|
err = 0;
|
|
vccq = slot->host.ios.vccq;
|
|
SDHCI_LOCK(slot);
|
|
sdhci_set_clock(slot, 0);
|
|
hostctrl2 = RD2(slot, SDHCI_HOST_CONTROL2);
|
|
switch (vccq) {
|
|
case vccq_330:
|
|
if (!(hostctrl2 & SDHCI_CTRL2_S18_ENABLE))
|
|
goto done;
|
|
hostctrl2 &= ~SDHCI_CTRL2_S18_ENABLE;
|
|
WR2(slot, SDHCI_HOST_CONTROL2, hostctrl2);
|
|
DELAY(5000);
|
|
hostctrl2 = RD2(slot, SDHCI_HOST_CONTROL2);
|
|
if (!(hostctrl2 & SDHCI_CTRL2_S18_ENABLE))
|
|
goto done;
|
|
err = EAGAIN;
|
|
break;
|
|
case vccq_180:
|
|
if (!(slot->host.caps & MMC_CAP_SIGNALING_180)) {
|
|
err = EINVAL;
|
|
goto done;
|
|
}
|
|
if (hostctrl2 & SDHCI_CTRL2_S18_ENABLE)
|
|
goto done;
|
|
hostctrl2 |= SDHCI_CTRL2_S18_ENABLE;
|
|
WR2(slot, SDHCI_HOST_CONTROL2, hostctrl2);
|
|
DELAY(5000);
|
|
hostctrl2 = RD2(slot, SDHCI_HOST_CONTROL2);
|
|
if (hostctrl2 & SDHCI_CTRL2_S18_ENABLE)
|
|
goto done;
|
|
err = EAGAIN;
|
|
break;
|
|
default:
|
|
slot_printf(slot,
|
|
"Attempt to set unsupported signaling voltage\n");
|
|
err = EINVAL;
|
|
break;
|
|
}
|
|
done:
|
|
sdhci_set_clock(slot, slot->host.ios.clock);
|
|
SDHCI_UNLOCK(slot);
|
|
return (err);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_tune(device_t brdev __unused, device_t reqdev, bool hs400)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
const struct mmc_ios *ios = &slot->host.ios;
|
|
struct mmc_command *tune_cmd;
|
|
struct mmc_data *tune_data;
|
|
uint32_t opcode;
|
|
int err;
|
|
|
|
if (!(slot->opt & SDHCI_TUNING_SUPPORTED))
|
|
return (0);
|
|
|
|
slot->retune_ticks = slot->retune_count * hz;
|
|
opcode = MMC_SEND_TUNING_BLOCK;
|
|
SDHCI_LOCK(slot);
|
|
switch (ios->timing) {
|
|
case bus_timing_mmc_hs400:
|
|
slot_printf(slot, "HS400 must be tuned in HS200 mode\n");
|
|
SDHCI_UNLOCK(slot);
|
|
return (EINVAL);
|
|
case bus_timing_mmc_hs200:
|
|
/*
|
|
* In HS400 mode, controllers use the data strobe line to
|
|
* latch data from the devices so periodic re-tuning isn't
|
|
* expected to be required.
|
|
*/
|
|
if (hs400)
|
|
slot->retune_ticks = 0;
|
|
opcode = MMC_SEND_TUNING_BLOCK_HS200;
|
|
break;
|
|
case bus_timing_uhs_ddr50:
|
|
case bus_timing_uhs_sdr104:
|
|
break;
|
|
case bus_timing_uhs_sdr50:
|
|
if (slot->opt & SDHCI_SDR50_NEEDS_TUNING)
|
|
break;
|
|
SDHCI_UNLOCK(slot);
|
|
return (0);
|
|
default:
|
|
slot_printf(slot, "Tuning requested but not required.\n");
|
|
SDHCI_UNLOCK(slot);
|
|
return (EINVAL);
|
|
}
|
|
|
|
tune_cmd = slot->tune_cmd;
|
|
memset(tune_cmd, 0, sizeof(*tune_cmd));
|
|
tune_cmd->opcode = opcode;
|
|
tune_cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
|
|
tune_data = tune_cmd->data = slot->tune_data;
|
|
memset(tune_data, 0, sizeof(*tune_data));
|
|
tune_data->len = (opcode == MMC_SEND_TUNING_BLOCK_HS200 &&
|
|
ios->bus_width == bus_width_8) ? MMC_TUNING_LEN_HS200 :
|
|
MMC_TUNING_LEN;
|
|
tune_data->flags = MMC_DATA_READ;
|
|
tune_data->mrq = tune_cmd->mrq = slot->tune_req;
|
|
|
|
slot->opt &= ~SDHCI_TUNING_ENABLED;
|
|
err = sdhci_exec_tuning(slot, true);
|
|
if (err == 0) {
|
|
slot->opt |= SDHCI_TUNING_ENABLED;
|
|
slot->intmask |= sdhci_tuning_intmask(slot);
|
|
WR4(slot, SDHCI_INT_ENABLE, slot->intmask);
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
|
|
if (slot->retune_ticks) {
|
|
callout_reset(&slot->retune_callout, slot->retune_ticks,
|
|
sdhci_retune, slot);
|
|
}
|
|
}
|
|
SDHCI_UNLOCK(slot);
|
|
return (err);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_retune(device_t brdev __unused, device_t reqdev, bool reset)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
int err;
|
|
|
|
if (!(slot->opt & SDHCI_TUNING_ENABLED))
|
|
return (0);
|
|
|
|
/* HS400 must be tuned in HS200 mode. */
|
|
if (slot->host.ios.timing == bus_timing_mmc_hs400)
|
|
return (EINVAL);
|
|
|
|
SDHCI_LOCK(slot);
|
|
err = sdhci_exec_tuning(slot, reset);
|
|
/*
|
|
* There are two ways sdhci_exec_tuning() can fail:
|
|
* EBUSY should not actually happen when requests are only issued
|
|
* with the host properly acquired, and
|
|
* EIO re-tuning failed (but it did work initially).
|
|
*
|
|
* In both cases, we should retry at later point if periodic re-tuning
|
|
* is enabled. Note that due to slot->retune_req not being cleared in
|
|
* these failure cases, the MMC layer should trigger another attempt at
|
|
* re-tuning with the next request anyway, though.
|
|
*/
|
|
if (slot->retune_ticks) {
|
|
callout_reset(&slot->retune_callout, slot->retune_ticks,
|
|
sdhci_retune, slot);
|
|
}
|
|
SDHCI_UNLOCK(slot);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
sdhci_exec_tuning(struct sdhci_slot *slot, bool reset)
|
|
{
|
|
struct mmc_request *tune_req;
|
|
struct mmc_command *tune_cmd;
|
|
int i;
|
|
uint32_t intmask;
|
|
uint16_t hostctrl2;
|
|
u_char opt;
|
|
|
|
SDHCI_ASSERT_LOCKED(slot);
|
|
if (slot->req != NULL)
|
|
return (EBUSY);
|
|
|
|
/* Tuning doesn't work with DMA enabled. */
|
|
opt = slot->opt;
|
|
slot->opt = opt & ~SDHCI_HAVE_DMA;
|
|
|
|
/*
|
|
* Ensure that as documented, SDHCI_INT_DATA_AVAIL is the only
|
|
* kind of interrupt we receive in response to a tuning request.
|
|
*/
|
|
intmask = slot->intmask;
|
|
slot->intmask = SDHCI_INT_DATA_AVAIL;
|
|
WR4(slot, SDHCI_INT_ENABLE, SDHCI_INT_DATA_AVAIL);
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, SDHCI_INT_DATA_AVAIL);
|
|
|
|
hostctrl2 = RD2(slot, SDHCI_HOST_CONTROL2);
|
|
if (reset)
|
|
hostctrl2 &= ~SDHCI_CTRL2_SAMPLING_CLOCK;
|
|
else
|
|
hostctrl2 |= SDHCI_CTRL2_SAMPLING_CLOCK;
|
|
WR2(slot, SDHCI_HOST_CONTROL2, hostctrl2 | SDHCI_CTRL2_EXEC_TUNING);
|
|
|
|
tune_req = slot->tune_req;
|
|
tune_cmd = slot->tune_cmd;
|
|
for (i = 0; i < MMC_TUNING_MAX; i++) {
|
|
memset(tune_req, 0, sizeof(*tune_req));
|
|
tune_req->cmd = tune_cmd;
|
|
tune_req->done = sdhci_req_wakeup;
|
|
tune_req->done_data = slot;
|
|
slot->req = tune_req;
|
|
slot->flags = 0;
|
|
sdhci_start(slot);
|
|
while (!(tune_req->flags & MMC_REQ_DONE))
|
|
msleep(tune_req, &slot->mtx, 0, "sdhciet", 0);
|
|
if (!(tune_req->flags & MMC_TUNE_DONE))
|
|
break;
|
|
hostctrl2 = RD2(slot, SDHCI_HOST_CONTROL2);
|
|
if (!(hostctrl2 & SDHCI_CTRL2_EXEC_TUNING))
|
|
break;
|
|
if (tune_cmd->opcode == MMC_SEND_TUNING_BLOCK)
|
|
DELAY(1000);
|
|
}
|
|
|
|
/*
|
|
* Restore DMA usage and interrupts.
|
|
* Note that the interrupt aggregation code might have cleared
|
|
* SDHCI_INT_DMA_END and/or SDHCI_INT_RESPONSE in slot->intmask
|
|
* and SDHCI_SIGNAL_ENABLE respectively so ensure SDHCI_INT_ENABLE
|
|
* doesn't lose these.
|
|
*/
|
|
slot->opt = opt;
|
|
slot->intmask = intmask;
|
|
WR4(slot, SDHCI_INT_ENABLE, intmask | SDHCI_INT_DMA_END |
|
|
SDHCI_INT_RESPONSE);
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, intmask);
|
|
|
|
if ((hostctrl2 & (SDHCI_CTRL2_EXEC_TUNING |
|
|
SDHCI_CTRL2_SAMPLING_CLOCK)) == SDHCI_CTRL2_SAMPLING_CLOCK) {
|
|
slot->retune_req = 0;
|
|
return (0);
|
|
}
|
|
|
|
slot_printf(slot, "Tuning failed, using fixed sampling clock\n");
|
|
WR2(slot, SDHCI_HOST_CONTROL2, hostctrl2 & ~(SDHCI_CTRL2_EXEC_TUNING |
|
|
SDHCI_CTRL2_SAMPLING_CLOCK));
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
|
|
return (EIO);
|
|
}
|
|
|
|
static void
|
|
sdhci_retune(void *arg)
|
|
{
|
|
struct sdhci_slot *slot = arg;
|
|
|
|
slot->retune_req |= SDHCI_RETUNE_REQ_NEEDED;
|
|
}
|
|
|
|
#ifdef MMCCAM
|
|
static void
|
|
sdhci_req_done(struct sdhci_slot *slot)
|
|
{
|
|
union ccb *ccb;
|
|
|
|
if (__predict_false(sdhci_debug > 1))
|
|
slot_printf(slot, "%s\n", __func__);
|
|
if (slot->ccb != NULL && slot->curcmd != NULL) {
|
|
callout_stop(&slot->timeout_callout);
|
|
ccb = slot->ccb;
|
|
slot->ccb = NULL;
|
|
slot->curcmd = NULL;
|
|
|
|
/* Tell CAM the request is finished */
|
|
struct ccb_mmcio *mmcio;
|
|
mmcio = &ccb->mmcio;
|
|
|
|
ccb->ccb_h.status =
|
|
(mmcio->cmd.error == 0 ? CAM_REQ_CMP : CAM_REQ_CMP_ERR);
|
|
xpt_done(ccb);
|
|
}
|
|
}
|
|
#else
|
|
static void
|
|
sdhci_req_done(struct sdhci_slot *slot)
|
|
{
|
|
struct mmc_request *req;
|
|
|
|
if (slot->req != NULL && slot->curcmd != NULL) {
|
|
callout_stop(&slot->timeout_callout);
|
|
req = slot->req;
|
|
slot->req = NULL;
|
|
slot->curcmd = NULL;
|
|
req->done(req);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
sdhci_req_wakeup(struct mmc_request *req)
|
|
{
|
|
|
|
req->flags |= MMC_REQ_DONE;
|
|
wakeup(req);
|
|
}
|
|
|
|
static void
|
|
sdhci_timeout(void *arg)
|
|
{
|
|
struct sdhci_slot *slot = arg;
|
|
|
|
if (slot->curcmd != NULL) {
|
|
slot_printf(slot, "Controller timeout\n");
|
|
sdhci_dumpregs(slot);
|
|
SDHCI_RESET(slot->bus, slot,
|
|
SDHCI_RESET_CMD | SDHCI_RESET_DATA);
|
|
slot->curcmd->error = MMC_ERR_TIMEOUT;
|
|
sdhci_req_done(slot);
|
|
} else {
|
|
slot_printf(slot, "Spurious timeout - no active command\n");
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_set_transfer_mode(struct sdhci_slot *slot, const struct mmc_data *data)
|
|
{
|
|
uint16_t mode;
|
|
|
|
if (data == NULL)
|
|
return;
|
|
|
|
mode = SDHCI_TRNS_BLK_CNT_EN;
|
|
if (data->len > 512 || data->block_count > 1) {
|
|
mode |= SDHCI_TRNS_MULTI;
|
|
if (data->block_count == 0 && __predict_true(
|
|
#ifdef MMCCAM
|
|
slot->ccb->mmcio.stop.opcode == MMC_STOP_TRANSMISSION &&
|
|
#else
|
|
slot->req->stop != NULL &&
|
|
#endif
|
|
!(slot->quirks & SDHCI_QUIRK_BROKEN_AUTO_STOP)))
|
|
mode |= SDHCI_TRNS_ACMD12;
|
|
}
|
|
if (data->flags & MMC_DATA_READ)
|
|
mode |= SDHCI_TRNS_READ;
|
|
if (slot->flags & SDHCI_USE_DMA)
|
|
mode |= SDHCI_TRNS_DMA;
|
|
|
|
WR2(slot, SDHCI_TRANSFER_MODE, mode);
|
|
}
|
|
|
|
static void
|
|
sdhci_start_command(struct sdhci_slot *slot, struct mmc_command *cmd)
|
|
{
|
|
int flags, timeout;
|
|
uint32_t mask;
|
|
|
|
slot->curcmd = cmd;
|
|
slot->cmd_done = 0;
|
|
|
|
cmd->error = MMC_ERR_NONE;
|
|
|
|
/* This flags combination is not supported by controller. */
|
|
if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
|
|
slot_printf(slot, "Unsupported response type!\n");
|
|
cmd->error = MMC_ERR_FAILED;
|
|
sdhci_req_done(slot);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Do not issue command if there is no card, clock or power.
|
|
* Controller will not detect timeout without clock active.
|
|
*/
|
|
if (!SDHCI_GET_CARD_PRESENT(slot->bus, slot) ||
|
|
slot->power == 0 ||
|
|
slot->clock == 0) {
|
|
slot_printf(slot,
|
|
"Cannot issue a command (power=%d clock=%d)\n",
|
|
slot->power, slot->clock);
|
|
cmd->error = MMC_ERR_FAILED;
|
|
sdhci_req_done(slot);
|
|
return;
|
|
}
|
|
/* Always wait for free CMD bus. */
|
|
mask = SDHCI_CMD_INHIBIT;
|
|
/* Wait for free DAT if we have data or busy signal. */
|
|
if (cmd->data != NULL || (cmd->flags & MMC_RSP_BUSY))
|
|
mask |= SDHCI_DAT_INHIBIT;
|
|
/*
|
|
* We shouldn't wait for DAT for stop commands or CMD19/CMD21. Note
|
|
* that these latter are also special in that SDHCI_CMD_DATA should
|
|
* be set below but no actual data is ever read from the controller.
|
|
*/
|
|
#ifdef MMCCAM
|
|
if (cmd == &slot->ccb->mmcio.stop ||
|
|
#else
|
|
if (cmd == slot->req->stop ||
|
|
#endif
|
|
__predict_false(cmd->opcode == MMC_SEND_TUNING_BLOCK ||
|
|
cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200))
|
|
mask &= ~SDHCI_DAT_INHIBIT;
|
|
/*
|
|
* Wait for bus no more then 250 ms. Typically there will be no wait
|
|
* here at all, but when writing a crash dump we may be bypassing the
|
|
* host platform's interrupt handler, and in some cases that handler
|
|
* may be working around hardware quirks such as not respecting r1b
|
|
* busy indications. In those cases, this wait-loop serves the purpose
|
|
* of waiting for the prior command and data transfers to be done, and
|
|
* SD cards are allowed to take up to 250ms for write and erase ops.
|
|
* (It's usually more like 20-30ms in the real world.)
|
|
*/
|
|
timeout = 250;
|
|
while (mask & RD4(slot, SDHCI_PRESENT_STATE)) {
|
|
if (timeout == 0) {
|
|
slot_printf(slot, "Controller never released "
|
|
"inhibit bit(s).\n");
|
|
sdhci_dumpregs(slot);
|
|
cmd->error = MMC_ERR_FAILED;
|
|
sdhci_req_done(slot);
|
|
return;
|
|
}
|
|
timeout--;
|
|
DELAY(1000);
|
|
}
|
|
|
|
/* Prepare command flags. */
|
|
if (!(cmd->flags & MMC_RSP_PRESENT))
|
|
flags = SDHCI_CMD_RESP_NONE;
|
|
else if (cmd->flags & MMC_RSP_136)
|
|
flags = SDHCI_CMD_RESP_LONG;
|
|
else if (cmd->flags & MMC_RSP_BUSY)
|
|
flags = SDHCI_CMD_RESP_SHORT_BUSY;
|
|
else
|
|
flags = SDHCI_CMD_RESP_SHORT;
|
|
if (cmd->flags & MMC_RSP_CRC)
|
|
flags |= SDHCI_CMD_CRC;
|
|
if (cmd->flags & MMC_RSP_OPCODE)
|
|
flags |= SDHCI_CMD_INDEX;
|
|
if (cmd->data != NULL)
|
|
flags |= SDHCI_CMD_DATA;
|
|
if (cmd->opcode == MMC_STOP_TRANSMISSION)
|
|
flags |= SDHCI_CMD_TYPE_ABORT;
|
|
/* Prepare data. */
|
|
sdhci_start_data(slot, cmd->data);
|
|
/*
|
|
* Interrupt aggregation: To reduce total number of interrupts
|
|
* group response interrupt with data interrupt when possible.
|
|
* If there going to be data interrupt, mask response one.
|
|
*/
|
|
if (slot->data_done == 0) {
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE,
|
|
slot->intmask &= ~SDHCI_INT_RESPONSE);
|
|
}
|
|
/* Set command argument. */
|
|
WR4(slot, SDHCI_ARGUMENT, cmd->arg);
|
|
/* Set data transfer mode. */
|
|
sdhci_set_transfer_mode(slot, cmd->data);
|
|
if (__predict_false(sdhci_debug > 1))
|
|
slot_printf(slot, "Starting command opcode %#04x flags %#04x\n",
|
|
cmd->opcode, flags);
|
|
|
|
/* Start command. */
|
|
WR2(slot, SDHCI_COMMAND_FLAGS, (cmd->opcode << 8) | (flags & 0xff));
|
|
/* Start timeout callout. */
|
|
callout_reset(&slot->timeout_callout, slot->timeout * hz,
|
|
sdhci_timeout, slot);
|
|
}
|
|
|
|
static void
|
|
sdhci_finish_command(struct sdhci_slot *slot)
|
|
{
|
|
int i;
|
|
uint32_t val;
|
|
uint8_t extra;
|
|
|
|
if (__predict_false(sdhci_debug > 1))
|
|
slot_printf(slot, "%s: called, err %d flags %#04x\n",
|
|
__func__, slot->curcmd->error, slot->curcmd->flags);
|
|
slot->cmd_done = 1;
|
|
/*
|
|
* Interrupt aggregation: Restore command interrupt.
|
|
* Main restore point for the case when command interrupt
|
|
* happened first.
|
|
*/
|
|
if (__predict_true(slot->curcmd->opcode != MMC_SEND_TUNING_BLOCK &&
|
|
slot->curcmd->opcode != MMC_SEND_TUNING_BLOCK_HS200))
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask |=
|
|
SDHCI_INT_RESPONSE);
|
|
/* In case of error - reset host and return. */
|
|
if (slot->curcmd->error) {
|
|
if (slot->curcmd->error == MMC_ERR_BADCRC)
|
|
slot->retune_req |= SDHCI_RETUNE_REQ_RESET;
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_CMD);
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_DATA);
|
|
sdhci_start(slot);
|
|
return;
|
|
}
|
|
/* If command has response - fetch it. */
|
|
if (slot->curcmd->flags & MMC_RSP_PRESENT) {
|
|
if (slot->curcmd->flags & MMC_RSP_136) {
|
|
/* CRC is stripped so we need one byte shift. */
|
|
extra = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
val = RD4(slot, SDHCI_RESPONSE + i * 4);
|
|
if (slot->quirks &
|
|
SDHCI_QUIRK_DONT_SHIFT_RESPONSE)
|
|
slot->curcmd->resp[3 - i] = val;
|
|
else {
|
|
slot->curcmd->resp[3 - i] =
|
|
(val << 8) | extra;
|
|
extra = val >> 24;
|
|
}
|
|
}
|
|
} else
|
|
slot->curcmd->resp[0] = RD4(slot, SDHCI_RESPONSE);
|
|
}
|
|
if (__predict_false(sdhci_debug > 1))
|
|
slot_printf(slot, "Resp: %#04x %#04x %#04x %#04x\n",
|
|
slot->curcmd->resp[0], slot->curcmd->resp[1],
|
|
slot->curcmd->resp[2], slot->curcmd->resp[3]);
|
|
|
|
/* If data ready - finish. */
|
|
if (slot->data_done)
|
|
sdhci_start(slot);
|
|
}
|
|
|
|
static void
|
|
sdhci_start_data(struct sdhci_slot *slot, const struct mmc_data *data)
|
|
{
|
|
uint32_t blkcnt, blksz, current_timeout, sdma_bbufsz, target_timeout;
|
|
uint8_t div;
|
|
|
|
if (data == NULL && (slot->curcmd->flags & MMC_RSP_BUSY) == 0) {
|
|
slot->data_done = 1;
|
|
return;
|
|
}
|
|
|
|
slot->data_done = 0;
|
|
|
|
/* Calculate and set data timeout.*/
|
|
/* XXX: We should have this from mmc layer, now assume 1 sec. */
|
|
if (slot->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) {
|
|
div = 0xE;
|
|
} else {
|
|
target_timeout = 1000000;
|
|
div = 0;
|
|
current_timeout = (1 << 13) * 1000 / slot->timeout_clk;
|
|
while (current_timeout < target_timeout && div < 0xE) {
|
|
++div;
|
|
current_timeout <<= 1;
|
|
}
|
|
/* Compensate for an off-by-one error in the CaFe chip.*/
|
|
if (div < 0xE &&
|
|
(slot->quirks & SDHCI_QUIRK_INCR_TIMEOUT_CONTROL)) {
|
|
++div;
|
|
}
|
|
}
|
|
WR1(slot, SDHCI_TIMEOUT_CONTROL, div);
|
|
|
|
if (data == NULL)
|
|
return;
|
|
|
|
/* Use DMA if possible. */
|
|
if ((slot->opt & SDHCI_HAVE_DMA))
|
|
slot->flags |= SDHCI_USE_DMA;
|
|
/* If data is small, broken DMA may return zeroes instead of data. */
|
|
if ((slot->quirks & SDHCI_QUIRK_BROKEN_TIMINGS) &&
|
|
(data->len <= 512))
|
|
slot->flags &= ~SDHCI_USE_DMA;
|
|
/* Some controllers require even block sizes. */
|
|
if ((slot->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) &&
|
|
((data->len) & 0x3))
|
|
slot->flags &= ~SDHCI_USE_DMA;
|
|
/* Load DMA buffer. */
|
|
if (slot->flags & SDHCI_USE_DMA) {
|
|
sdma_bbufsz = slot->sdma_bbufsz;
|
|
if (data->flags & MMC_DATA_READ)
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_PREREAD);
|
|
else {
|
|
memcpy(slot->dmamem, data->data, ulmin(data->len,
|
|
sdma_bbufsz));
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_PREWRITE);
|
|
}
|
|
WR4(slot, SDHCI_DMA_ADDRESS, slot->paddr);
|
|
/*
|
|
* Interrupt aggregation: Mask border interrupt for the last
|
|
* bounce buffer and unmask otherwise.
|
|
*/
|
|
if (data->len == sdma_bbufsz)
|
|
slot->intmask &= ~SDHCI_INT_DMA_END;
|
|
else
|
|
slot->intmask |= SDHCI_INT_DMA_END;
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
|
|
}
|
|
/* Current data offset for both PIO and DMA. */
|
|
slot->offset = 0;
|
|
#ifdef MMCCAM
|
|
if (data->flags & MMC_DATA_BLOCK_SIZE) {
|
|
/* Set block size and request border interrupts on the SDMA boundary. */
|
|
blksz = SDHCI_MAKE_BLKSZ(slot->sdma_boundary, data->block_size);
|
|
blkcnt = data->block_count;
|
|
if (__predict_false(sdhci_debug > 0))
|
|
slot_printf(slot, "SDIO Custom block params: blksz: "
|
|
"%#10x, blk cnt: %#10x\n", blksz, blkcnt);
|
|
} else
|
|
#endif
|
|
{
|
|
/* Set block size and request border interrupts on the SDMA boundary. */
|
|
blksz = SDHCI_MAKE_BLKSZ(slot->sdma_boundary, ulmin(data->len, 512));
|
|
blkcnt = howmany(data->len, 512);
|
|
}
|
|
|
|
WR2(slot, SDHCI_BLOCK_SIZE, blksz);
|
|
WR2(slot, SDHCI_BLOCK_COUNT, blkcnt);
|
|
if (__predict_false(sdhci_debug > 1))
|
|
slot_printf(slot, "Blk size: 0x%08x | Blk cnt: 0x%08x\n",
|
|
blksz, blkcnt);
|
|
}
|
|
|
|
void
|
|
sdhci_finish_data(struct sdhci_slot *slot)
|
|
{
|
|
struct mmc_data *data = slot->curcmd->data;
|
|
size_t left;
|
|
|
|
/* Interrupt aggregation: Restore command interrupt.
|
|
* Auxiliary restore point for the case when data interrupt
|
|
* happened first. */
|
|
if (!slot->cmd_done) {
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE,
|
|
slot->intmask |= SDHCI_INT_RESPONSE);
|
|
}
|
|
/* Unload rest of data from DMA buffer. */
|
|
if (!slot->data_done && (slot->flags & SDHCI_USE_DMA) &&
|
|
slot->curcmd->data != NULL) {
|
|
if (data->flags & MMC_DATA_READ) {
|
|
left = data->len - slot->offset;
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_POSTREAD);
|
|
memcpy((u_char*)data->data + slot->offset, slot->dmamem,
|
|
ulmin(left, slot->sdma_bbufsz));
|
|
} else
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_POSTWRITE);
|
|
}
|
|
slot->data_done = 1;
|
|
/* If there was error - reset the host. */
|
|
if (slot->curcmd->error) {
|
|
if (slot->curcmd->error == MMC_ERR_BADCRC)
|
|
slot->retune_req |= SDHCI_RETUNE_REQ_RESET;
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_CMD);
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_DATA);
|
|
sdhci_start(slot);
|
|
return;
|
|
}
|
|
/* If we already have command response - finish. */
|
|
if (slot->cmd_done)
|
|
sdhci_start(slot);
|
|
}
|
|
|
|
#ifdef MMCCAM
|
|
static void
|
|
sdhci_start(struct sdhci_slot *slot)
|
|
{
|
|
union ccb *ccb;
|
|
struct ccb_mmcio *mmcio;
|
|
|
|
ccb = slot->ccb;
|
|
if (ccb == NULL)
|
|
return;
|
|
|
|
mmcio = &ccb->mmcio;
|
|
if (!(slot->flags & CMD_STARTED)) {
|
|
slot->flags |= CMD_STARTED;
|
|
sdhci_start_command(slot, &mmcio->cmd);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Old stack doesn't use this!
|
|
* Enabling this code causes significant performance degradation
|
|
* and IRQ storms on BBB, Wandboard behaves fine.
|
|
* Not using this code does no harm...
|
|
if (!(slot->flags & STOP_STARTED) && mmcio->stop.opcode != 0) {
|
|
slot->flags |= STOP_STARTED;
|
|
sdhci_start_command(slot, &mmcio->stop);
|
|
return;
|
|
}
|
|
*/
|
|
if (__predict_false(sdhci_debug > 1))
|
|
slot_printf(slot, "result: %d\n", mmcio->cmd.error);
|
|
if (mmcio->cmd.error == 0 &&
|
|
(slot->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)) {
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_CMD);
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_DATA);
|
|
}
|
|
|
|
sdhci_req_done(slot);
|
|
}
|
|
#else
|
|
static void
|
|
sdhci_start(struct sdhci_slot *slot)
|
|
{
|
|
const struct mmc_request *req;
|
|
|
|
req = slot->req;
|
|
if (req == NULL)
|
|
return;
|
|
|
|
if (!(slot->flags & CMD_STARTED)) {
|
|
slot->flags |= CMD_STARTED;
|
|
sdhci_start_command(slot, req->cmd);
|
|
return;
|
|
}
|
|
if ((slot->quirks & SDHCI_QUIRK_BROKEN_AUTO_STOP) &&
|
|
!(slot->flags & STOP_STARTED) && req->stop) {
|
|
slot->flags |= STOP_STARTED;
|
|
sdhci_start_command(slot, req->stop);
|
|
return;
|
|
}
|
|
if (__predict_false(sdhci_debug > 1))
|
|
slot_printf(slot, "result: %d\n", req->cmd->error);
|
|
if (!req->cmd->error &&
|
|
((slot->curcmd == req->stop &&
|
|
(slot->quirks & SDHCI_QUIRK_BROKEN_AUTO_STOP)) ||
|
|
(slot->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) {
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_CMD);
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_DATA);
|
|
}
|
|
|
|
sdhci_req_done(slot);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
sdhci_generic_request(device_t brdev __unused, device_t reqdev,
|
|
struct mmc_request *req)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
|
|
SDHCI_LOCK(slot);
|
|
if (slot->req != NULL) {
|
|
SDHCI_UNLOCK(slot);
|
|
return (EBUSY);
|
|
}
|
|
if (__predict_false(sdhci_debug > 1)) {
|
|
slot_printf(slot,
|
|
"CMD%u arg %#x flags %#x dlen %u dflags %#x\n",
|
|
req->cmd->opcode, req->cmd->arg, req->cmd->flags,
|
|
(req->cmd->data)?(u_int)req->cmd->data->len:0,
|
|
(req->cmd->data)?req->cmd->data->flags:0);
|
|
}
|
|
slot->req = req;
|
|
slot->flags = 0;
|
|
sdhci_start(slot);
|
|
SDHCI_UNLOCK(slot);
|
|
if (dumping) {
|
|
while (slot->req != NULL) {
|
|
sdhci_generic_intr(slot);
|
|
DELAY(10);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_get_ro(device_t brdev __unused, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
uint32_t val;
|
|
|
|
SDHCI_LOCK(slot);
|
|
val = RD4(slot, SDHCI_PRESENT_STATE);
|
|
SDHCI_UNLOCK(slot);
|
|
return (!(val & SDHCI_WRITE_PROTECT));
|
|
}
|
|
|
|
int
|
|
sdhci_generic_acquire_host(device_t brdev __unused, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
int err = 0;
|
|
|
|
SDHCI_LOCK(slot);
|
|
while (slot->bus_busy)
|
|
msleep(slot, &slot->mtx, 0, "sdhciah", 0);
|
|
slot->bus_busy++;
|
|
/* Activate led. */
|
|
WR1(slot, SDHCI_HOST_CONTROL, slot->hostctrl |= SDHCI_CTRL_LED);
|
|
SDHCI_UNLOCK(slot);
|
|
return (err);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_release_host(device_t brdev __unused, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
|
|
SDHCI_LOCK(slot);
|
|
/* Deactivate led. */
|
|
WR1(slot, SDHCI_HOST_CONTROL, slot->hostctrl &= ~SDHCI_CTRL_LED);
|
|
slot->bus_busy--;
|
|
wakeup(slot);
|
|
SDHCI_UNLOCK(slot);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
sdhci_cmd_irq(struct sdhci_slot *slot, uint32_t intmask)
|
|
{
|
|
|
|
if (!slot->curcmd) {
|
|
slot_printf(slot, "Got command interrupt 0x%08x, but "
|
|
"there is no active command.\n", intmask);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
if (intmask & SDHCI_INT_TIMEOUT)
|
|
slot->curcmd->error = MMC_ERR_TIMEOUT;
|
|
else if (intmask & SDHCI_INT_CRC)
|
|
slot->curcmd->error = MMC_ERR_BADCRC;
|
|
else if (intmask & (SDHCI_INT_END_BIT | SDHCI_INT_INDEX))
|
|
slot->curcmd->error = MMC_ERR_FIFO;
|
|
|
|
sdhci_finish_command(slot);
|
|
}
|
|
|
|
static void
|
|
sdhci_data_irq(struct sdhci_slot *slot, uint32_t intmask)
|
|
{
|
|
struct mmc_data *data;
|
|
size_t left;
|
|
uint32_t sdma_bbufsz;
|
|
|
|
if (!slot->curcmd) {
|
|
slot_printf(slot, "Got data interrupt 0x%08x, but "
|
|
"there is no active command.\n", intmask);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
if (slot->curcmd->data == NULL &&
|
|
(slot->curcmd->flags & MMC_RSP_BUSY) == 0) {
|
|
slot_printf(slot, "Got data interrupt 0x%08x, but "
|
|
"there is no active data operation.\n",
|
|
intmask);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
if (intmask & SDHCI_INT_DATA_TIMEOUT)
|
|
slot->curcmd->error = MMC_ERR_TIMEOUT;
|
|
else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT))
|
|
slot->curcmd->error = MMC_ERR_BADCRC;
|
|
if (slot->curcmd->data == NULL &&
|
|
(intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL |
|
|
SDHCI_INT_DMA_END))) {
|
|
slot_printf(slot, "Got data interrupt 0x%08x, but "
|
|
"there is busy-only command.\n", intmask);
|
|
sdhci_dumpregs(slot);
|
|
slot->curcmd->error = MMC_ERR_INVALID;
|
|
}
|
|
if (slot->curcmd->error) {
|
|
/* No need to continue after any error. */
|
|
goto done;
|
|
}
|
|
|
|
/* Handle tuning completion interrupt. */
|
|
if (__predict_false((intmask & SDHCI_INT_DATA_AVAIL) &&
|
|
(slot->curcmd->opcode == MMC_SEND_TUNING_BLOCK ||
|
|
slot->curcmd->opcode == MMC_SEND_TUNING_BLOCK_HS200))) {
|
|
slot->req->flags |= MMC_TUNE_DONE;
|
|
sdhci_finish_command(slot);
|
|
sdhci_finish_data(slot);
|
|
return;
|
|
}
|
|
/* Handle PIO interrupt. */
|
|
if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) {
|
|
if ((slot->opt & SDHCI_PLATFORM_TRANSFER) &&
|
|
SDHCI_PLATFORM_WILL_HANDLE(slot->bus, slot)) {
|
|
SDHCI_PLATFORM_START_TRANSFER(slot->bus, slot,
|
|
&intmask);
|
|
slot->flags |= PLATFORM_DATA_STARTED;
|
|
} else
|
|
sdhci_transfer_pio(slot);
|
|
}
|
|
/* Handle DMA border. */
|
|
if (intmask & SDHCI_INT_DMA_END) {
|
|
data = slot->curcmd->data;
|
|
sdma_bbufsz = slot->sdma_bbufsz;
|
|
|
|
/* Unload DMA buffer ... */
|
|
left = data->len - slot->offset;
|
|
if (data->flags & MMC_DATA_READ) {
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_POSTREAD);
|
|
memcpy((u_char*)data->data + slot->offset, slot->dmamem,
|
|
ulmin(left, sdma_bbufsz));
|
|
} else {
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_POSTWRITE);
|
|
}
|
|
/* ... and reload it again. */
|
|
slot->offset += sdma_bbufsz;
|
|
left = data->len - slot->offset;
|
|
if (data->flags & MMC_DATA_READ) {
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_PREREAD);
|
|
} else {
|
|
memcpy(slot->dmamem, (u_char*)data->data + slot->offset,
|
|
ulmin(left, sdma_bbufsz));
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_PREWRITE);
|
|
}
|
|
/*
|
|
* Interrupt aggregation: Mask border interrupt for the last
|
|
* bounce buffer.
|
|
*/
|
|
if (left == sdma_bbufsz) {
|
|
slot->intmask &= ~SDHCI_INT_DMA_END;
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
|
|
}
|
|
/* Restart DMA. */
|
|
WR4(slot, SDHCI_DMA_ADDRESS, slot->paddr);
|
|
}
|
|
/* We have got all data. */
|
|
if (intmask & SDHCI_INT_DATA_END) {
|
|
if (slot->flags & PLATFORM_DATA_STARTED) {
|
|
slot->flags &= ~PLATFORM_DATA_STARTED;
|
|
SDHCI_PLATFORM_FINISH_TRANSFER(slot->bus, slot);
|
|
} else
|
|
sdhci_finish_data(slot);
|
|
}
|
|
done:
|
|
if (slot->curcmd != NULL && slot->curcmd->error != 0) {
|
|
if (slot->flags & PLATFORM_DATA_STARTED) {
|
|
slot->flags &= ~PLATFORM_DATA_STARTED;
|
|
SDHCI_PLATFORM_FINISH_TRANSFER(slot->bus, slot);
|
|
} else
|
|
sdhci_finish_data(slot);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_acmd_irq(struct sdhci_slot *slot, uint16_t acmd_err)
|
|
{
|
|
|
|
if (!slot->curcmd) {
|
|
slot_printf(slot, "Got AutoCMD12 error 0x%04x, but "
|
|
"there is no active command.\n", acmd_err);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
slot_printf(slot, "Got AutoCMD12 error 0x%04x\n", acmd_err);
|
|
SDHCI_RESET(slot->bus, slot, SDHCI_RESET_CMD);
|
|
}
|
|
|
|
void
|
|
sdhci_generic_intr(struct sdhci_slot *slot)
|
|
{
|
|
uint32_t intmask, present;
|
|
uint16_t val16;
|
|
|
|
SDHCI_LOCK(slot);
|
|
/* Read slot interrupt status. */
|
|
intmask = RD4(slot, SDHCI_INT_STATUS);
|
|
if (intmask == 0 || intmask == 0xffffffff) {
|
|
SDHCI_UNLOCK(slot);
|
|
return;
|
|
}
|
|
if (__predict_false(sdhci_debug > 2))
|
|
slot_printf(slot, "Interrupt %#x\n", intmask);
|
|
|
|
/* Handle tuning error interrupt. */
|
|
if (__predict_false(intmask & SDHCI_INT_TUNEERR)) {
|
|
WR4(slot, SDHCI_INT_STATUS, SDHCI_INT_TUNEERR);
|
|
slot_printf(slot, "Tuning error indicated\n");
|
|
slot->retune_req |= SDHCI_RETUNE_REQ_RESET;
|
|
if (slot->curcmd) {
|
|
slot->curcmd->error = MMC_ERR_BADCRC;
|
|
sdhci_finish_command(slot);
|
|
}
|
|
}
|
|
/* Handle re-tuning interrupt. */
|
|
if (__predict_false(intmask & SDHCI_INT_RETUNE))
|
|
slot->retune_req |= SDHCI_RETUNE_REQ_NEEDED;
|
|
/* Handle card presence interrupts. */
|
|
if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) {
|
|
present = (intmask & SDHCI_INT_CARD_INSERT) != 0;
|
|
slot->intmask &=
|
|
~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE);
|
|
slot->intmask |= present ? SDHCI_INT_CARD_REMOVE :
|
|
SDHCI_INT_CARD_INSERT;
|
|
WR4(slot, SDHCI_INT_ENABLE, slot->intmask);
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
|
|
WR4(slot, SDHCI_INT_STATUS, intmask &
|
|
(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE));
|
|
sdhci_handle_card_present_locked(slot, present);
|
|
}
|
|
/* Handle command interrupts. */
|
|
if (intmask & SDHCI_INT_CMD_MASK) {
|
|
WR4(slot, SDHCI_INT_STATUS, intmask & SDHCI_INT_CMD_MASK);
|
|
sdhci_cmd_irq(slot, intmask & SDHCI_INT_CMD_MASK);
|
|
}
|
|
/* Handle data interrupts. */
|
|
if (intmask & SDHCI_INT_DATA_MASK) {
|
|
WR4(slot, SDHCI_INT_STATUS, intmask & SDHCI_INT_DATA_MASK);
|
|
/* Don't call data_irq in case of errored command. */
|
|
if ((intmask & SDHCI_INT_CMD_ERROR_MASK) == 0)
|
|
sdhci_data_irq(slot, intmask & SDHCI_INT_DATA_MASK);
|
|
}
|
|
/* Handle AutoCMD12 error interrupt. */
|
|
if (intmask & SDHCI_INT_ACMD12ERR) {
|
|
/* Clearing SDHCI_INT_ACMD12ERR may clear SDHCI_ACMD12_ERR. */
|
|
val16 = RD2(slot, SDHCI_ACMD12_ERR);
|
|
WR4(slot, SDHCI_INT_STATUS, SDHCI_INT_ACMD12ERR);
|
|
sdhci_acmd_irq(slot, val16);
|
|
}
|
|
/* Handle bus power interrupt. */
|
|
if (intmask & SDHCI_INT_BUS_POWER) {
|
|
WR4(slot, SDHCI_INT_STATUS, SDHCI_INT_BUS_POWER);
|
|
slot_printf(slot, "Card is consuming too much power!\n");
|
|
}
|
|
intmask &= ~(SDHCI_INT_ERROR | SDHCI_INT_TUNEERR | SDHCI_INT_RETUNE |
|
|
SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE | SDHCI_INT_CMD_MASK |
|
|
SDHCI_INT_DATA_MASK | SDHCI_INT_ACMD12ERR | SDHCI_INT_BUS_POWER);
|
|
/* The rest is unknown. */
|
|
if (intmask) {
|
|
WR4(slot, SDHCI_INT_STATUS, intmask);
|
|
slot_printf(slot, "Unexpected interrupt 0x%08x.\n",
|
|
intmask);
|
|
sdhci_dumpregs(slot);
|
|
}
|
|
|
|
SDHCI_UNLOCK(slot);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_read_ivar(device_t bus, device_t child, int which,
|
|
uintptr_t *result)
|
|
{
|
|
const struct sdhci_slot *slot = device_get_ivars(child);
|
|
|
|
switch (which) {
|
|
default:
|
|
return (EINVAL);
|
|
case MMCBR_IVAR_BUS_MODE:
|
|
*result = slot->host.ios.bus_mode;
|
|
break;
|
|
case MMCBR_IVAR_BUS_WIDTH:
|
|
*result = slot->host.ios.bus_width;
|
|
break;
|
|
case MMCBR_IVAR_CHIP_SELECT:
|
|
*result = slot->host.ios.chip_select;
|
|
break;
|
|
case MMCBR_IVAR_CLOCK:
|
|
*result = slot->host.ios.clock;
|
|
break;
|
|
case MMCBR_IVAR_F_MIN:
|
|
*result = slot->host.f_min;
|
|
break;
|
|
case MMCBR_IVAR_F_MAX:
|
|
*result = slot->host.f_max;
|
|
break;
|
|
case MMCBR_IVAR_HOST_OCR:
|
|
*result = slot->host.host_ocr;
|
|
break;
|
|
case MMCBR_IVAR_MODE:
|
|
*result = slot->host.mode;
|
|
break;
|
|
case MMCBR_IVAR_OCR:
|
|
*result = slot->host.ocr;
|
|
break;
|
|
case MMCBR_IVAR_POWER_MODE:
|
|
*result = slot->host.ios.power_mode;
|
|
break;
|
|
case MMCBR_IVAR_VDD:
|
|
*result = slot->host.ios.vdd;
|
|
break;
|
|
case MMCBR_IVAR_RETUNE_REQ:
|
|
if (slot->opt & SDHCI_TUNING_ENABLED) {
|
|
if (slot->retune_req & SDHCI_RETUNE_REQ_RESET) {
|
|
*result = retune_req_reset;
|
|
break;
|
|
}
|
|
if (slot->retune_req & SDHCI_RETUNE_REQ_NEEDED) {
|
|
*result = retune_req_normal;
|
|
break;
|
|
}
|
|
}
|
|
*result = retune_req_none;
|
|
break;
|
|
case MMCBR_IVAR_VCCQ:
|
|
*result = slot->host.ios.vccq;
|
|
break;
|
|
case MMCBR_IVAR_CAPS:
|
|
*result = slot->host.caps;
|
|
break;
|
|
case MMCBR_IVAR_TIMING:
|
|
*result = slot->host.ios.timing;
|
|
break;
|
|
case MMCBR_IVAR_MAX_DATA:
|
|
/*
|
|
* Re-tuning modes 1 and 2 restrict the maximum data length
|
|
* per read/write command to 4 MiB.
|
|
*/
|
|
if (slot->opt & SDHCI_TUNING_ENABLED &&
|
|
(slot->retune_mode == SDHCI_RETUNE_MODE_1 ||
|
|
slot->retune_mode == SDHCI_RETUNE_MODE_2)) {
|
|
*result = 4 * 1024 * 1024 / MMC_SECTOR_SIZE;
|
|
break;
|
|
}
|
|
*result = 65535;
|
|
break;
|
|
case MMCBR_IVAR_MAX_BUSY_TIMEOUT:
|
|
/*
|
|
* Currently, sdhci_start_data() hardcodes 1 s for all CMDs.
|
|
*/
|
|
*result = 1000000;
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sdhci_generic_write_ivar(device_t bus, device_t child, int which,
|
|
uintptr_t value)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(child);
|
|
uint32_t clock, max_clock;
|
|
int i;
|
|
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "%s: var=%d\n", __func__, which);
|
|
switch (which) {
|
|
default:
|
|
return (EINVAL);
|
|
case MMCBR_IVAR_BUS_MODE:
|
|
slot->host.ios.bus_mode = value;
|
|
break;
|
|
case MMCBR_IVAR_BUS_WIDTH:
|
|
slot->host.ios.bus_width = value;
|
|
break;
|
|
case MMCBR_IVAR_CHIP_SELECT:
|
|
slot->host.ios.chip_select = value;
|
|
break;
|
|
case MMCBR_IVAR_CLOCK:
|
|
if (value > 0) {
|
|
max_clock = slot->max_clk;
|
|
clock = max_clock;
|
|
|
|
if (slot->version < SDHCI_SPEC_300) {
|
|
for (i = 0; i < SDHCI_200_MAX_DIVIDER;
|
|
i <<= 1) {
|
|
if (clock <= value)
|
|
break;
|
|
clock >>= 1;
|
|
}
|
|
} else {
|
|
for (i = 0; i < SDHCI_300_MAX_DIVIDER;
|
|
i += 2) {
|
|
if (clock <= value)
|
|
break;
|
|
clock = max_clock / (i + 2);
|
|
}
|
|
}
|
|
|
|
slot->host.ios.clock = clock;
|
|
} else
|
|
slot->host.ios.clock = 0;
|
|
break;
|
|
case MMCBR_IVAR_MODE:
|
|
slot->host.mode = value;
|
|
break;
|
|
case MMCBR_IVAR_OCR:
|
|
slot->host.ocr = value;
|
|
break;
|
|
case MMCBR_IVAR_POWER_MODE:
|
|
slot->host.ios.power_mode = value;
|
|
break;
|
|
case MMCBR_IVAR_VDD:
|
|
slot->host.ios.vdd = value;
|
|
break;
|
|
case MMCBR_IVAR_VCCQ:
|
|
slot->host.ios.vccq = value;
|
|
break;
|
|
case MMCBR_IVAR_TIMING:
|
|
slot->host.ios.timing = value;
|
|
break;
|
|
case MMCBR_IVAR_CAPS:
|
|
case MMCBR_IVAR_HOST_OCR:
|
|
case MMCBR_IVAR_F_MIN:
|
|
case MMCBR_IVAR_F_MAX:
|
|
case MMCBR_IVAR_MAX_DATA:
|
|
case MMCBR_IVAR_RETUNE_REQ:
|
|
return (EINVAL);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#ifdef MMCCAM
|
|
void
|
|
sdhci_start_slot(struct sdhci_slot *slot)
|
|
{
|
|
|
|
if ((slot->devq = cam_simq_alloc(1)) == NULL)
|
|
goto fail;
|
|
|
|
mtx_init(&slot->sim_mtx, "sdhcisim", NULL, MTX_DEF);
|
|
slot->sim = cam_sim_alloc(sdhci_cam_action, sdhci_cam_poll,
|
|
"sdhci_slot", slot, device_get_unit(slot->bus),
|
|
&slot->sim_mtx, 1, 1, slot->devq);
|
|
|
|
if (slot->sim == NULL) {
|
|
cam_simq_free(slot->devq);
|
|
slot_printf(slot, "cannot allocate CAM SIM\n");
|
|
goto fail;
|
|
}
|
|
|
|
mtx_lock(&slot->sim_mtx);
|
|
if (xpt_bus_register(slot->sim, slot->bus, 0) != 0) {
|
|
slot_printf(slot, "cannot register SCSI pass-through bus\n");
|
|
cam_sim_free(slot->sim, FALSE);
|
|
cam_simq_free(slot->devq);
|
|
mtx_unlock(&slot->sim_mtx);
|
|
goto fail;
|
|
}
|
|
mtx_unlock(&slot->sim_mtx);
|
|
|
|
/* End CAM-specific init */
|
|
slot->card_present = 0;
|
|
sdhci_card_task(slot, 0);
|
|
return;
|
|
|
|
fail:
|
|
if (slot->sim != NULL) {
|
|
mtx_lock(&slot->sim_mtx);
|
|
xpt_bus_deregister(cam_sim_path(slot->sim));
|
|
cam_sim_free(slot->sim, FALSE);
|
|
mtx_unlock(&slot->sim_mtx);
|
|
}
|
|
|
|
if (slot->devq != NULL)
|
|
cam_simq_free(slot->devq);
|
|
}
|
|
|
|
void
|
|
sdhci_cam_action(struct cam_sim *sim, union ccb *ccb)
|
|
{
|
|
struct sdhci_slot *slot;
|
|
|
|
slot = cam_sim_softc(sim);
|
|
if (slot == NULL) {
|
|
ccb->ccb_h.status = CAM_SEL_TIMEOUT;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
mtx_assert(&slot->sim_mtx, MA_OWNED);
|
|
|
|
switch (ccb->ccb_h.func_code) {
|
|
case XPT_PATH_INQ:
|
|
mmc_path_inq(&ccb->cpi, "Deglitch Networks", sim, maxphys);
|
|
break;
|
|
|
|
case XPT_MMC_GET_TRAN_SETTINGS:
|
|
case XPT_GET_TRAN_SETTINGS:
|
|
{
|
|
struct ccb_trans_settings *cts = &ccb->cts;
|
|
uint32_t max_data;
|
|
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "Got XPT_GET_TRAN_SETTINGS\n");
|
|
|
|
cts->protocol = PROTO_MMCSD;
|
|
cts->protocol_version = 1;
|
|
cts->transport = XPORT_MMCSD;
|
|
cts->transport_version = 1;
|
|
cts->xport_specific.valid = 0;
|
|
cts->proto_specific.mmc.host_ocr = slot->host.host_ocr;
|
|
cts->proto_specific.mmc.host_f_min = slot->host.f_min;
|
|
cts->proto_specific.mmc.host_f_max = slot->host.f_max;
|
|
cts->proto_specific.mmc.host_caps = slot->host.caps;
|
|
/*
|
|
* Re-tuning modes 1 and 2 restrict the maximum data length
|
|
* per read/write command to 4 MiB.
|
|
*/
|
|
if (slot->opt & SDHCI_TUNING_ENABLED &&
|
|
(slot->retune_mode == SDHCI_RETUNE_MODE_1 ||
|
|
slot->retune_mode == SDHCI_RETUNE_MODE_2)) {
|
|
max_data = 4 * 1024 * 1024 / MMC_SECTOR_SIZE;
|
|
} else {
|
|
max_data = 65535;
|
|
}
|
|
cts->proto_specific.mmc.host_max_data = max_data;
|
|
|
|
memcpy(&cts->proto_specific.mmc.ios, &slot->host.ios, sizeof(struct mmc_ios));
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
break;
|
|
}
|
|
case XPT_MMC_SET_TRAN_SETTINGS:
|
|
case XPT_SET_TRAN_SETTINGS:
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "Got XPT_SET_TRAN_SETTINGS\n");
|
|
sdhci_cam_settran_settings(slot, ccb);
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
break;
|
|
case XPT_RESET_BUS:
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "Got XPT_RESET_BUS, ACK it...\n");
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
break;
|
|
case XPT_MMC_IO:
|
|
/*
|
|
* Here is the HW-dependent part of
|
|
* sending the command to the underlying h/w
|
|
* At some point in the future an interrupt comes.
|
|
* Then the request will be marked as completed.
|
|
*/
|
|
if (__predict_false(sdhci_debug > 1))
|
|
slot_printf(slot, "Got XPT_MMC_IO\n");
|
|
ccb->ccb_h.status = CAM_REQ_INPROG;
|
|
|
|
sdhci_cam_request(cam_sim_softc(sim), ccb);
|
|
return;
|
|
default:
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
break;
|
|
}
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
void
|
|
sdhci_cam_poll(struct cam_sim *sim)
|
|
{
|
|
sdhci_generic_intr(cam_sim_softc(sim));
|
|
}
|
|
|
|
static int
|
|
sdhci_cam_get_possible_host_clock(const struct sdhci_slot *slot,
|
|
int proposed_clock)
|
|
{
|
|
int max_clock, clock, i;
|
|
|
|
if (proposed_clock == 0)
|
|
return 0;
|
|
max_clock = slot->max_clk;
|
|
clock = max_clock;
|
|
|
|
if (slot->version < SDHCI_SPEC_300) {
|
|
for (i = 0; i < SDHCI_200_MAX_DIVIDER; i <<= 1) {
|
|
if (clock <= proposed_clock)
|
|
break;
|
|
clock >>= 1;
|
|
}
|
|
} else {
|
|
for (i = 0; i < SDHCI_300_MAX_DIVIDER; i += 2) {
|
|
if (clock <= proposed_clock)
|
|
break;
|
|
clock = max_clock / (i + 2);
|
|
}
|
|
}
|
|
return clock;
|
|
}
|
|
|
|
static int
|
|
sdhci_cam_settran_settings(struct sdhci_slot *slot, union ccb *ccb)
|
|
{
|
|
struct mmc_ios *ios;
|
|
const struct mmc_ios *new_ios;
|
|
const struct ccb_trans_settings_mmc *cts;
|
|
|
|
ios = &slot->host.ios;
|
|
cts = &ccb->cts.proto_specific.mmc;
|
|
new_ios = &cts->ios;
|
|
|
|
/* Update only requested fields */
|
|
if (cts->ios_valid & MMC_CLK) {
|
|
ios->clock = sdhci_cam_get_possible_host_clock(slot, new_ios->clock);
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "Clock => %d\n", ios->clock);
|
|
}
|
|
if (cts->ios_valid & MMC_VDD) {
|
|
ios->vdd = new_ios->vdd;
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "VDD => %d\n", ios->vdd);
|
|
}
|
|
if (cts->ios_valid & MMC_CS) {
|
|
ios->chip_select = new_ios->chip_select;
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "CS => %d\n", ios->chip_select);
|
|
}
|
|
if (cts->ios_valid & MMC_BW) {
|
|
ios->bus_width = new_ios->bus_width;
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "Bus width => %d\n", ios->bus_width);
|
|
}
|
|
if (cts->ios_valid & MMC_PM) {
|
|
ios->power_mode = new_ios->power_mode;
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "Power mode => %d\n", ios->power_mode);
|
|
}
|
|
if (cts->ios_valid & MMC_BT) {
|
|
ios->timing = new_ios->timing;
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "Timing => %d\n", ios->timing);
|
|
}
|
|
if (cts->ios_valid & MMC_BM) {
|
|
ios->bus_mode = new_ios->bus_mode;
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "Bus mode => %d\n", ios->bus_mode);
|
|
}
|
|
if (cts->ios_valid & MMC_VCCQ) {
|
|
ios->vccq = new_ios->vccq;
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "VCCQ => %d\n", ios->vccq);
|
|
}
|
|
|
|
/* XXX Provide a way to call a chip-specific IOS update, required for TI */
|
|
return (sdhci_cam_update_ios(slot));
|
|
}
|
|
|
|
static int
|
|
sdhci_cam_update_ios(struct sdhci_slot *slot)
|
|
{
|
|
struct mmc_ios *ios = &slot->host.ios;
|
|
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "%s: power_mode=%d, clk=%d, bus_width=%d, timing=%d\n",
|
|
__func__, ios->power_mode, ios->clock, ios->bus_width, ios->timing);
|
|
SDHCI_LOCK(slot);
|
|
/* Do full reset on bus power down to clear from any state. */
|
|
if (ios->power_mode == power_off) {
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, 0);
|
|
sdhci_init(slot);
|
|
}
|
|
/* Configure the bus. */
|
|
sdhci_set_clock(slot, ios->clock);
|
|
sdhci_set_power(slot, (ios->power_mode == power_off) ? 0 : ios->vdd);
|
|
if (ios->bus_width == bus_width_8) {
|
|
slot->hostctrl |= SDHCI_CTRL_8BITBUS;
|
|
slot->hostctrl &= ~SDHCI_CTRL_4BITBUS;
|
|
} else if (ios->bus_width == bus_width_4) {
|
|
slot->hostctrl &= ~SDHCI_CTRL_8BITBUS;
|
|
slot->hostctrl |= SDHCI_CTRL_4BITBUS;
|
|
} else if (ios->bus_width == bus_width_1) {
|
|
slot->hostctrl &= ~SDHCI_CTRL_8BITBUS;
|
|
slot->hostctrl &= ~SDHCI_CTRL_4BITBUS;
|
|
} else {
|
|
panic("Invalid bus width: %d", ios->bus_width);
|
|
}
|
|
if (ios->timing == bus_timing_hs &&
|
|
!(slot->quirks & SDHCI_QUIRK_DONT_SET_HISPD_BIT))
|
|
slot->hostctrl |= SDHCI_CTRL_HISPD;
|
|
else
|
|
slot->hostctrl &= ~SDHCI_CTRL_HISPD;
|
|
WR1(slot, SDHCI_HOST_CONTROL, slot->hostctrl);
|
|
/* Some controllers like reset after bus changes. */
|
|
if(slot->quirks & SDHCI_QUIRK_RESET_ON_IOS)
|
|
SDHCI_RESET(slot->bus, slot,
|
|
SDHCI_RESET_CMD | SDHCI_RESET_DATA);
|
|
|
|
SDHCI_UNLOCK(slot);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
sdhci_cam_request(struct sdhci_slot *slot, union ccb *ccb)
|
|
{
|
|
const struct ccb_mmcio *mmcio;
|
|
|
|
mmcio = &ccb->mmcio;
|
|
|
|
SDHCI_LOCK(slot);
|
|
/* if (slot->req != NULL) {
|
|
SDHCI_UNLOCK(slot);
|
|
return (EBUSY);
|
|
}
|
|
*/
|
|
if (__predict_false(sdhci_debug > 1)) {
|
|
slot_printf(slot, "CMD%u arg %#x flags %#x dlen %u dflags %#x "
|
|
"blksz=%zu blkcnt=%zu\n",
|
|
mmcio->cmd.opcode, mmcio->cmd.arg, mmcio->cmd.flags,
|
|
mmcio->cmd.data != NULL ? (unsigned int) mmcio->cmd.data->len : 0,
|
|
mmcio->cmd.data != NULL ? mmcio->cmd.data->flags : 0,
|
|
mmcio->cmd.data != NULL ? mmcio->cmd.data->block_size : 0,
|
|
mmcio->cmd.data != NULL ? mmcio->cmd.data->block_count : 0);
|
|
}
|
|
if (mmcio->cmd.data != NULL) {
|
|
if (mmcio->cmd.data->len == 0 || mmcio->cmd.data->flags == 0)
|
|
panic("data->len = %d, data->flags = %d -- something is b0rked",
|
|
(int)mmcio->cmd.data->len, mmcio->cmd.data->flags);
|
|
}
|
|
slot->ccb = ccb;
|
|
slot->flags = 0;
|
|
sdhci_start(slot);
|
|
SDHCI_UNLOCK(slot);
|
|
return (0);
|
|
}
|
|
#endif /* MMCCAM */
|
|
|
|
MODULE_VERSION(sdhci, SDHCI_VERSION);
|