a94a63f0a6
Implement the MMC/SD/SDIO protocol within a CAM framework. CAM's flexible queueing will make it easier to write non-storage drivers than the legacy stack. SDIO drivers from both the kernel and as userland daemons are possible, though much of that functionality will come later. Some of the CAM integration isn't complete (there are sleeps in the device probe state machine, for example), but those minor issues can be improved in-tree more easily than out of tree and shouldn't gate progress on other fronts. Appologies to reviews if specific items have been overlooked. Submitted by: Ilya Bakulin Reviewed by: emaste, imp, mav, adrian, ian Differential Review: https://reviews.freebsd.org/D4761 merge with first commit, various compile hacks.
127 lines
4.0 KiB
C
127 lines
4.0 KiB
C
/*-
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* Copyright (c) 2015 Ilya Bakulin <ilya@bakulin.de>
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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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* without modification, immediately at the beginning of the file.
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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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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/time.h>
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#include <sys/conf.h>
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#include <sys/fcntl.h>
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#include <sys/interrupt.h>
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#include <sys/sbuf.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sysctl.h>
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#include <sys/condvar.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_queue.h>
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#include <cam/cam_periph.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/cam_xpt_periph.h>
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#include <cam/cam_xpt_internal.h>
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#include <cam/cam_debug.h>
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#include <cam/mmc/mmc.h>
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#include <cam/mmc/mmc_bus.h>
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#include <cam/mmc/mmc_sdio.h>
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#include <machine/stdarg.h> /* for xpt_print below */
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#include <machine/_inttypes.h> /* for PRIu64 */
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#include "opt_cam.h"
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void
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sdio_print_stupid_message(struct cam_periph *periph) {
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CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
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("%s\n", __func__));
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}
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/*
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* f - function to read from / write to
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* wr - is write
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* adr - address to r/w
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* data - actual data to write
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*/
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void sdio_fill_mmcio_rw_direct(union ccb *ccb, uint8_t f, uint8_t wr, uint32_t adr, uint8_t *data) {
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struct ccb_mmcio *mmcio;
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CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
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("sdio_fill_mmcio(f=%d, wr=%d, adr=%02x, data=%02x)\n", f, wr, adr, (data == NULL ? 0 : *data)));
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mmcio = &ccb->mmcio;
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mmcio->cmd.opcode = SD_IO_RW_DIRECT;
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mmcio->cmd.arg = SD_IO_RW_FUNC(f) | SD_IO_RW_ADR(adr);
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if (wr)
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mmcio->cmd.arg |= SD_IO_RW_WR | SD_IO_RW_RAW | SD_IO_RW_DAT(*data);
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mmcio->cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
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mmcio->cmd.data->len = 0;
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}
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uint8_t sdio_parse_mmcio_rw_direct(union ccb *ccb, uint8_t *data) {
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struct ccb_mmcio *mmcio;
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CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
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("sdio_parse_mmcio(datap=%p)\n", data));
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mmcio = &ccb->mmcio;
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if (mmcio->cmd.error)
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return (mmcio->cmd.error);
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if (mmcio->cmd.resp[0] & R5_COM_CRC_ERROR)
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return (MMC_ERR_BADCRC);
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if (mmcio->cmd.resp[0] & (R5_ILLEGAL_COMMAND | R5_FUNCTION_NUMBER))
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return (MMC_ERR_INVALID);
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if (mmcio->cmd.resp[0] & R5_OUT_OF_RANGE)
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return (MMC_ERR_FAILED);
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/* Just for information... */
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if (R5_IO_CURRENT_STATE(mmcio->cmd.resp[0]) != 1)
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printf("!!! SDIO state %d\n", R5_IO_CURRENT_STATE(mmcio->cmd.resp[0]));
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if (mmcio->cmd.resp[0] & R5_ERROR)
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printf("An error was detected!\n");
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if (mmcio->cmd.resp[0] & R5_COM_CRC_ERROR)
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printf("A CRC error was detected!\n");
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if (data != NULL)
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*data = (uint8_t) (mmcio->cmd.resp[0] & 0xff);
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return (MMC_ERR_NONE);
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}
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