106 lines
3.6 KiB
C
106 lines
3.6 KiB
C
|
/*-
|
||
|
* Copyright (c) 2006 M. Warner Losh. All rights reserved.
|
||
|
*
|
||
|
* 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.
|
||
|
*
|
||
|
* $FreeBSD$
|
||
|
*/
|
||
|
|
||
|
#ifndef DEV_MMC_BRIDGE_H
|
||
|
#define DEV_MMC_BRIDGE_H
|
||
|
|
||
|
/*
|
||
|
* 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 consistancy 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 cards are attached on a bus topology,
|
||
|
* while sd and sdio cards are attached using a star topology (meaning
|
||
|
* in practice each sd card has its own, independent slot). Each
|
||
|
* mmcbr is assumed to be derived from the mmcbr. This is done to
|
||
|
* allow for easier addition of bridges (as each bridge does not need
|
||
|
* to be added to the mmcbus file).
|
||
|
*
|
||
|
* Attached to the mmc bridge is an mmcbus. The mmcbus is described
|
||
|
* in dev/mmc/bus.h.
|
||
|
*/
|
||
|
|
||
|
|
||
|
/*
|
||
|
* 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_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
|
||
|
};
|
||
|
|
||
|
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_bus_mode bus_mode;
|
||
|
enum mmc_chip_select chip_select;
|
||
|
enum mmc_bus_width bus_width;
|
||
|
enum mmc_power_mode power_mode;
|
||
|
};
|
||
|
|
||
|
enum mmc_card_mode {
|
||
|
mode_mmc, mode_sd
|
||
|
};
|
||
|
|
||
|
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 */
|
||
|
enum mmc_card_mode mode;
|
||
|
struct mmc_ios ios; /* Current state of the host */
|
||
|
};
|
||
|
|
||
|
#endif /* DEV_MMC_BRIDGE_H */
|