b344de4d0d
In order to support various types of data stored in device tree properties or ACPI _DSD packages, create a new enum so the caller can specify the expected type of a property they want to read, according to the binding. The bus logic will use that information to process the underlying data. For example in DT all integer properties are stored in BE format. In order to get constant results across different platforms we need to convert its endianness to match the host. Another example are ACPI_TYPE_INTEGER properties stored as uint64_t. Before this patch the ACPI logic would refuse to read them if the provided buffer was smaller than 8 bytes. Now this can be handled by using DEVICE_PROP_UINT32 type. Modify the existing consumers of this API to reflect the changes and update the man pages accordingly. Reviewed by: mw Obtained from: Semihalf MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D33457
136 lines
4.9 KiB
C
136 lines
4.9 KiB
C
/*
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* Copyright 2019 Emmanuel Vadot <manu@freebsd.org>
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* Copyright (c) 2017 Ian Lepore <ian@freebsd.org> 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 are
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* met:
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*
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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
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* 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/kernel.h>
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#include <sys/gpio.h>
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#include <sys/taskqueue.h>
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#include <dev/mmc/bridge.h>
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#include <dev/mmc/mmc_helpers.h>
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static inline void
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mmc_parse_sd_speed(device_t dev, struct mmc_host *host)
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{
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bool no_18v = false;
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/*
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* Parse SD supported modes
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* All UHS-I modes requires 1.8V signaling.
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*/
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if (device_has_property(dev, "no-1-8-v"))
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no_18v = true;
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if (device_has_property(dev, "cap-sd-highspeed"))
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host->caps |= MMC_CAP_HSPEED;
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if (device_has_property(dev, "sd-uhs-sdr12") && !no_18v)
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host->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "sd-uhs-sdr25") && !no_18v)
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host->caps |= MMC_CAP_UHS_SDR25 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "sd-uhs-sdr50") && !no_18v)
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host->caps |= MMC_CAP_UHS_SDR50 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "sd-uhs-sdr104") && !no_18v)
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host->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "sd-uhs-ddr50") && !no_18v)
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host->caps |= MMC_CAP_UHS_DDR50 | MMC_CAP_SIGNALING_180;
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}
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static inline void
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mmc_parse_mmc_speed(device_t dev, struct mmc_host *host)
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{
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/* Parse eMMC supported modes */
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if (device_has_property(dev, "cap-mmc-highspeed"))
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host->caps |= MMC_CAP_HSPEED;
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if (device_has_property(dev, "mmc-ddr-1_2v"))
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host->caps |= MMC_CAP_MMC_DDR52_120 | MMC_CAP_SIGNALING_120;
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if (device_has_property(dev, "mmc-ddr-1_8v"))
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host->caps |= MMC_CAP_MMC_DDR52_180 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "mmc-ddr-3_3v"))
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host->caps |= MMC_CAP_SIGNALING_330;
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if (device_has_property(dev, "mmc-hs200-1_2v"))
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host->caps |= MMC_CAP_MMC_HS200_120 | MMC_CAP_SIGNALING_120;
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if (device_has_property(dev, "mmc-hs200-1_8v"))
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host->caps |= MMC_CAP_MMC_HS200_180 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "mmc-hs400-1_2v"))
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host->caps |= MMC_CAP_MMC_HS400_120 | MMC_CAP_SIGNALING_120;
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if (device_has_property(dev, "mmc-hs400-1_8v"))
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host->caps |= MMC_CAP_MMC_HS400_180 | MMC_CAP_SIGNALING_180;
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if (device_has_property(dev, "mmc-hs400-enhanced-strobe"))
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host->caps |= MMC_CAP_MMC_ENH_STROBE;
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}
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int
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mmc_parse(device_t dev, struct mmc_helper *helper, struct mmc_host *host)
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{
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uint32_t bus_width, max_freq;
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bus_width = 0;
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if (device_get_property(dev, "bus-width", &bus_width,
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sizeof(bus_width), DEVICE_PROP_UINT32) <= 0)
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bus_width = 1;
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if (bus_width >= 4)
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host->caps |= MMC_CAP_4_BIT_DATA;
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if (bus_width >= 8)
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host->caps |= MMC_CAP_8_BIT_DATA;
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/*
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* max-frequency is optional, drivers should tweak this value
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* if it's not present based on the clock that the mmc controller
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* operates on
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*/
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if (device_get_property(dev, "max-frequency", &max_freq,
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sizeof(max_freq), DEVICE_PROP_UINT32) > 0)
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host->f_max = max_freq;
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if (device_has_property(dev, "broken-cd"))
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helper->props |= MMC_PROP_BROKEN_CD;
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if (device_has_property(dev, "non-removable"))
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helper->props |= MMC_PROP_NON_REMOVABLE;
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if (device_has_property(dev, "wp-inverted"))
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helper->props |= MMC_PROP_WP_INVERTED;
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if (device_has_property(dev, "cd-inverted"))
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helper->props |= MMC_PROP_CD_INVERTED;
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if (device_has_property(dev, "no-sdio"))
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helper->props |= MMC_PROP_NO_SDIO;
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if (device_has_property(dev, "no-sd"))
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helper->props |= MMC_PROP_NO_SD;
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if (device_has_property(dev, "no-mmc"))
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helper->props |= MMC_PROP_NO_MMC;
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if (!(helper->props & MMC_PROP_NO_SD))
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mmc_parse_sd_speed(dev, host);
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if (!(helper->props & MMC_PROP_NO_MMC))
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mmc_parse_mmc_speed(dev, host);
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return (0);
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}
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