/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2006 M. Warner Losh * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Portions of this software may have been developed with reference to * the SD Simplified Specification. The following disclaimer may apply: * * The following conditions apply to the release of the simplified * specification ("Simplified Specification") by the SD Card Association and * the SD Group. The Simplified Specification is a subset of the complete SD * Specification which is owned by the SD Card Association and the SD * Group. This Simplified Specification is provided on a non-confidential * basis subject to the disclaimers below. Any implementation of the * Simplified Specification may require a license from the SD Card * Association, SD Group, SD-3C LLC or other third parties. * * Disclaimers: * * The information contained in the Simplified Specification is presented only * as a standard specification for SD Cards and SD Host/Ancillary products and * is provided "AS-IS" without any representations or warranties of any * kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD * Card Association for any damages, any infringements of patents or other * right of the SD Group, SD-3C LLC, the SD Card Association or any third * parties, which may result from its use. No license is granted by * implication, estoppel or otherwise under any patent or other rights of the * SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing * herein shall be construed as an obligation by the SD Group, the SD-3C LLC * or the SD Card Association to disclose or distribute any technical * information, know-how or other confidential information to any third party. */ #ifndef DEV_MMC_BRIDGE_H #define DEV_MMC_BRIDGE_H #include /* * This file defines interfaces for the mmc bridge. The names chosen * are similar to or the same as the names used in Linux to allow for * easy porting of what Linux calls mmc host drivers. I use the * FreeBSD terminology of bridge and bus for consistency with other * drivers in the system. This file corresponds roughly to the Linux * linux/mmc/host.h file. * * A mmc bridge is a chipset that can have one or more mmc and/or sd * cards attached to it. mmc devices are attached on a bus topology, * while sd and sdio cards usually are attached using a star topology * (meaning in practice each sd card has its own, independent slot). * Since SDHCI v3.00, buses for esd and esdio are possible, though. * * Attached to the mmc bridge is an mmcbus. The mmcbus is described * in dev/mmc/mmcbus_if.m. */ /* * mmc_ios is a structure that is used to store the state of the mmc/sd * bus configuration. This include the bus' clock speed, its voltage, * the bus mode for command output, the SPI chip select, some power * states and the bus width. */ enum mmc_vdd { vdd_150 = 0, vdd_155, vdd_160, vdd_165, vdd_170, vdd_180, vdd_190, vdd_200, vdd_210, vdd_220, vdd_230, vdd_240, vdd_250, vdd_260, vdd_270, vdd_280, vdd_290, vdd_300, vdd_310, vdd_320, vdd_330, vdd_340, vdd_350, vdd_360 }; enum mmc_vccq { vccq_120 = 0, vccq_180, vccq_330 }; enum mmc_power_mode { power_off = 0, power_up, power_on }; enum mmc_bus_mode { opendrain = 1, pushpull }; enum mmc_chip_select { cs_dontcare = 0, cs_high, cs_low }; enum mmc_bus_width { bus_width_1 = 0, bus_width_4 = 2, bus_width_8 = 3 }; enum mmc_drv_type { drv_type_b = 0, drv_type_a, drv_type_c, drv_type_d }; enum mmc_bus_timing { bus_timing_normal = 0, bus_timing_hs, bus_timing_uhs_sdr12, bus_timing_uhs_sdr25, bus_timing_uhs_sdr50, bus_timing_uhs_ddr50, bus_timing_uhs_sdr104, bus_timing_mmc_ddr52, bus_timing_mmc_hs200, bus_timing_mmc_hs400, bus_timing_mmc_hs400es, bus_timing_max = bus_timing_mmc_hs400es }; struct mmc_ios { uint32_t clock; /* Speed of the clock in Hz to move data */ enum mmc_vdd vdd; /* Voltage to apply to the power pins */ enum mmc_vccq vccq; /* Voltage to use for signaling */ enum mmc_bus_mode bus_mode; enum mmc_chip_select chip_select; enum mmc_bus_width bus_width; enum mmc_power_mode power_mode; enum mmc_bus_timing timing; enum mmc_drv_type drv_type; }; enum mmc_card_mode { mode_mmc, mode_sd }; enum mmc_retune_req { retune_req_none = 0, retune_req_normal, retune_req_reset }; struct mmc_host { int f_min; int f_max; uint32_t host_ocr; uint32_t ocr; uint32_t caps; #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can do 4-bit data transfers */ #define MMC_CAP_8_BIT_DATA (1 << 1) /* Can do 8-bit data transfers */ #define MMC_CAP_HSPEED (1 << 2) /* Can do High Speed transfers */ #define MMC_CAP_BOOT_NOACC (1 << 4) /* Cannot access boot partitions */ #define MMC_CAP_WAIT_WHILE_BUSY (1 << 5) /* Host waits for busy responses */ #define MMC_CAP_UHS_SDR12 (1 << 6) /* Can do UHS SDR12 */ #define MMC_CAP_UHS_SDR25 (1 << 7) /* Can do UHS SDR25 */ #define MMC_CAP_UHS_SDR50 (1 << 8) /* Can do UHS SDR50 */ #define MMC_CAP_UHS_SDR104 (1 << 9) /* Can do UHS SDR104 */ #define MMC_CAP_UHS_DDR50 (1 << 10) /* Can do UHS DDR50 */ #define MMC_CAP_MMC_DDR52_120 (1 << 11) /* Can do eMMC DDR52 at 1.2 V */ #define MMC_CAP_MMC_DDR52_180 (1 << 12) /* Can do eMMC DDR52 at 1.8 V */ #define MMC_CAP_MMC_DDR52 (MMC_CAP_MMC_DDR52_120 | MMC_CAP_MMC_DDR52_180) #define MMC_CAP_MMC_HS200_120 (1 << 13) /* Can do eMMC HS200 at 1.2 V */ #define MMC_CAP_MMC_HS200_180 (1 << 14) /* Can do eMMC HS200 at 1.8 V */ #define MMC_CAP_MMC_HS200 (MMC_CAP_MMC_HS200_120| MMC_CAP_MMC_HS200_180) #define MMC_CAP_MMC_HS400_120 (1 << 15) /* Can do eMMC HS400 at 1.2 V */ #define MMC_CAP_MMC_HS400_180 (1 << 16) /* Can do eMMC HS400 at 1.8 V */ #define MMC_CAP_MMC_HS400 (MMC_CAP_MMC_HS400_120 | MMC_CAP_MMC_HS400_180) #define MMC_CAP_MMC_HSX00_120 (MMC_CAP_MMC_HS200_120 | MMC_CAP_MMC_HS400_120) #define MMC_CAP_MMC_ENH_STROBE (1 << 17) /* Can do eMMC Enhanced Strobe */ #define MMC_CAP_SIGNALING_120 (1 << 18) /* Can do signaling at 1.2 V */ #define MMC_CAP_SIGNALING_180 (1 << 19) /* Can do signaling at 1.8 V */ #define MMC_CAP_SIGNALING_330 (1 << 20) /* Can do signaling at 3.3 V */ #define MMC_CAP_DRIVER_TYPE_A (1 << 21) /* Can do Driver Type A */ #define MMC_CAP_DRIVER_TYPE_C (1 << 22) /* Can do Driver Type C */ #define MMC_CAP_DRIVER_TYPE_D (1 << 23) /* Can do Driver Type D */ enum mmc_card_mode mode; struct mmc_ios ios; /* Current state of the host */ }; #ifdef _KERNEL extern driver_t mmc_driver; extern devclass_t mmc_devclass; #define MMC_VERSION 5 #define MMC_DECLARE_BRIDGE(name) \ DRIVER_MODULE(mmc, name, mmc_driver, mmc_devclass, NULL, NULL); \ MODULE_DEPEND(name, mmc, MMC_VERSION, MMC_VERSION, MMC_VERSION); #define MMC_DEPEND(name) \ MODULE_DEPEND(name, mmc, MMC_VERSION, MMC_VERSION, MMC_VERSION); #endif /* _KERNEL */ #endif /* DEV_MMC_BRIDGE_H */