114b4164dd
should be easily adapted to SD 2.0 (aka SDHC), SDIO, MMC and MMCplus cards. At the present time, there's only one bridge driver for the ARM9 based Atmel AT91RM9200.
85 lines
2.4 KiB
Objective-C
85 lines
2.4 KiB
Objective-C
#-
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# Copyright (c) 2006 M. Warner Losh
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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 AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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#include <sys/types.h>
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#include <dev/mmc/bridge.h>
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#include <dev/mmc/mmcreg.h>
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#
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# This is the interface that a mmc bridge chip gives to the mmc bus
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# that attaches to the mmc bridge.
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#
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INTERFACE mmcbr;
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#
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# Called by the mmcbus to setup the IO pins correctly, the voltage to use
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# for the card, the type of selects, power modes and bus width.
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#
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METHOD int update_ios {
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device_t brdev;
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device_t reqdev;
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};
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#
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# Called by the mmcbus or its children to schedule a mmc request. These
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# requests are queued. Time passes. The bridge then gets notification
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# of the status of request, who then notifies the requesting device via
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# the xfer_done mmcbus method.
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#
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METHOD int request {
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device_t brdev;
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device_t reqdev;
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struct mmc_request *req;
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};
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#
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# Called by mmcbus to get the read only status bits.
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#
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METHOD int get_ro {
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device_t brdev;
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device_t reqdev;
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};
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#
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# Claim the current bridge, blocking the current thread until the host
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# is no longer busy.
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#
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METHOD int acquire_host {
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device_t brdev;
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device_t reqdev;
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}
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#
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# Release the current bridge.
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#
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METHOD int release_host {
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device_t brdev;
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device_t reqdev;
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}
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