+++ /dev/null
-/******************************************************************************
-*
-* Copyright (C) 2013 - 2014 Xilinx, Inc. All rights reserved.
-*
-* Permission is hereby granted, free of charge, to any person obtaining a copy
-* of this software and associated documentation files (the "Software"), to deal
-* in the Software without restriction, including without limitation the rights
-* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-* copies of the Software, and to permit persons to whom the Software is
-* furnished to do so, subject to the following conditions:
-*
-* The above copyright notice and this permission notice shall be included in
-* all copies or substantial portions of the Software.
-*
-* Use of the Software is limited solely to applications:
-* (a) running on a Xilinx device, or
-* (b) that interact with a Xilinx device through a bus or interconnect.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-* XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
-* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-* SOFTWARE.
-*
-* Except as contained in this notice, the name of the Xilinx shall not be used
-* in advertising or otherwise to promote the sale, use or other dealings in
-* this Software without prior written authorization from Xilinx.
-*
-******************************************************************************/
-/*****************************************************************************/
-/**
-*
-* @file xsdps.h
-* @addtogroup sdps_v2_1
-* @{
-* @details
-*
-* This file contains the implementation of XSdPs driver.
-* This driver is used initialize read from and write to the SD card.
-* Features such as switching bus width to 4-bit and switching to high speed,
-* changing clock frequency, block size etc. are supported.
-* SD 2.0 uses 1/4 bus width and speeds of 25/50KHz. Initialization, however
-* is done using 1-bit bus width and 400KHz clock frequency.
-* SD commands are classified as broadcast and addressed. Commands can be
-* those with response only (using only command line) or
-* response + data (using command and data lines).
-* Only one command can be sent at a time. During a data transfer however,
-* when dsta lines are in use, certain commands (which use only the command
-* line) can be sent, most often to obtain status.
-* This driver does not support multi card slots at present.
-*
-* Intialization:
-* This includes initialization on the host controller side to select
-* clock frequency, bus power and default transfer related parameters.
-* The default voltage is 3.3V.
-* On the SD card side, the initialization and identification state diagram is
-* implemented. This resets the card, gives it a unique address/ID and
-* identifies key card related specifications.
-*
-* Data transfer:
-* The SD card is put in tranfer state to read from or write to it.
-* The default block size is 512 bytes and if supported,
-* default bus width is 4-bit and bus speed is High speed.
-* The read and write functions are implemented in polled mode using ADMA2.
-*
-* At any point, when key parameters such as block size or
-* clock/speed or bus width are modified, this driver takes care of
-* maintaining the same selection on host and card.
-* All error bits in host controller are monitored by the driver and in the
-* event one of them is set, driver will clear the interrupt status and
-* communicate failure to the upper layer.
-*
-* File system use:
-* This driver can be used with xilffs library to read and write files to SD.
-* (Please refer to procedure in diskio.c). The file system read/write example
-* in polled mode can used for reference.
-*
-* There is no example for using SD driver without file system at present.
-* However, the driver can be used without the file system. The glue layer
-* in filesytem can be used as reference for the same. The block count
-* passed to the read/write function in one call is limited by the ADMA2
-* descriptor table and hence care will have to be taken to call read/write
-* API's in a loop for large file sizes.
-*
-* Interrupt mode is not supported because it offers no improvement when used
-* with file system.
-*
-* eMMC support:
-* SD driver supports SD and eMMC based on the "enable MMC" parameter in SDK.
-* The features of eMMC supported by the driver will depend on those supported
-* by the host controller. The current driver supports read/write on eMMC card
-* using 4-bit and high speed mode currently.
-*
-* Features not supported include - card write protect, password setting,
-* lock/unlock, interrupts, SDMA mode, programmed I/O mode and
-* 64-bit addressed ADMA2, erase/pre-erase commands.
-*
-* <pre>
-* MODIFICATION HISTORY:
-*
-* Ver Who Date Changes
-* ----- --- -------- -----------------------------------------------
-* 1.00a hk/sg 10/17/13 Initial release
-* 2.0 hk 03/07/14 Version number revised.
-* 2.1 hk 04/18/14 Increase sleep for eMMC switch command.
-* Add sleep for microblaze designs. CR# 781117.
-*
-* </pre>
-*
-******************************************************************************/
-
-
-#ifndef SDPS_H_
-#define SDPS_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include "xstatus.h"
-#include "xsdps_hw.h"
-#include <string.h>
-
-/************************** Constant Definitions *****************************/
-
-/**************************** Type Definitions *******************************/
-/**
- * This typedef contains configuration information for the device.
- */
-typedef struct {
- u16 DeviceId; /**< Unique ID of device */
- u32 BaseAddress; /**< Base address of the device */
- u32 InputClockHz; /**< Input clock frequency */
-} XSdPs_Config;
-
-/*
- * ADMA2 descriptor table
- */
-typedef struct {
- u16 Attribute; /**< Attributes of descriptor */
- u16 Length; /**< Length of current dma transfer */
- u32 Address; /**< Address of current dma transfer */
-} XSdPs_Adma2Descriptor;
-
-/**
- * The XSdPs driver instance data. The user is required to allocate a
- * variable of this type for every SD device in the system. A pointer
- * to a variable of this type is then passed to the driver API functions.
- */
-typedef struct {
- XSdPs_Config Config; /**< Configuration structure */
- u32 IsReady; /**< Device is initialized and ready */
- u32 Host_Caps; /**< Capabilities of host controller */
- u32 HCS; /**< High capacity support in card */
- u32 CardID[4]; /**< Card ID */
- u32 RelCardAddr; /**< Relative Card Address */
- XSdPs_Adma2Descriptor Adma2_DescrTbl[32]; /**< ADMA Descriptors */
-} XSdPs;
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Function Prototypes ******************************/
-XSdPs_Config *XSdPs_LookupConfig(u16 DeviceId);
-int XSdPs_CfgInitialize(XSdPs *InstancePtr, XSdPs_Config *ConfigPtr,
- u32 EffectiveAddr);
-int XSdPs_SdCardInitialize(XSdPs *InstancePtr);
-int XSdPs_ReadPolled(XSdPs *InstancePtr, u32 Arg, u32 BlkCnt, u8 *Buff);
-int XSdPs_WritePolled(XSdPs *InstancePtr, u32 Arg, u32 BlkCnt, const u8 *Buff);
-int XSdPs_SetBlkSize(XSdPs *InstancePtr, u16 BlkSize);
-int XSdPs_Select_Card (XSdPs *InstancePtr);
-int XSdPs_Change_ClkFreq(XSdPs *InstancePtr, u32 SelFreq);
-int XSdPs_Change_BusWidth(XSdPs *InstancePtr);
-int XSdPs_Change_BusSpeed(XSdPs *InstancePtr);
-int XSdPs_Get_BusWidth(XSdPs *InstancePtr, u8 *SCR);
-int XSdPs_Get_BusSpeed(XSdPs *InstancePtr, u8 *ReadBuff);
-int XSdPs_Pullup(XSdPs *InstancePtr);
-int XSdPs_MmcCardInitialize(XSdPs *InstancePtr);
-int XSdPs_Get_Mmc_ExtCsd(XSdPs *InstancePtr, u8 *ReadBuff);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* SD_H_ */
-/** @} */
projects / freertos / blobdiff