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00001 /* 00002 * Copyright (c) 2009, Texas Instruments Incorporated 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 00009 * * Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 00012 * * Redistributions in binary form must reproduce the above copyright 00013 * notice, this list of conditions and the following disclaimer in the 00014 * documentation and/or other materials provided with the distribution. 00015 * 00016 * * Neither the name of Texas Instruments Incorporated nor the names of 00017 * its contributors may be used to endorse or promote products derived 00018 * from this software without specific prior written permission. 00019 * 00020 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00021 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 00022 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 00023 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 00024 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00025 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00026 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 00027 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 00028 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 00029 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 00030 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 * 00032 */ 00033 00085 #ifndef ti_sdo_linuxutils_sdma_interface_sdma_ 00086 #define ti_sdo_linuxutils_sdma_interface_sdma_ 00087 00088 #if defined (__cplusplus) 00089 extern "C" { 00090 #endif 00091 00094 00095 #define SDMA_VERSION 0x01000000U 00096 00100 typedef enum { 00101 SDMA_IOCREQUESTDMA = 1, 00102 SDMA_IOCRELEASEDMA, 00103 SDMA_IOCWAITFORCOMPLETION, 00104 SDMA_IOCGETVERSION 00105 } SDMA_commmands; 00106 00117 struct SDMA_transferState { 00118 volatile int transferCompleted; 00119 volatile int checkPending; 00120 }; 00121 00125 union SDMA_requestDmaParams { 00126 struct SDMA_transferState *ptransferState; 00127 int channel; 00128 }; 00129 00146 typedef struct SDMA_ChannelDescriptor { 00147 int chanNum; 00148 unsigned int * addr; 00149 struct SDMA_transferState transferState; 00150 } SDMA_ChannelDescriptor; 00151 00155 typedef enum SDMA_Status { 00156 SDMA_OK = 0, 00157 SDMA_EFAIL, 00158 SDMA_ENOCHANNEL, 00159 SDMA_ENOINIT 00160 } SDMA_Status; 00161 00162 00166 int SDMA_init(void); 00167 00171 int SDMA_exit(void); 00172 00193 SDMA_Status SDMA_getChannels(int numChannels, 00194 SDMA_ChannelDescriptor chanArray[]); 00195 00206 SDMA_Status SDMA_freeChannels(int numChannels, 00207 SDMA_ChannelDescriptor chanArray[]); 00208 00225 SDMA_Status SDMA_wait(SDMA_ChannelDescriptor * channel); 00226 00240 SDMA_Status SDMA_check(SDMA_ChannelDescriptor * channel, int *pcompleted); 00241 00249 int SDMA_getVersion(void); 00250 00253 #if defined (__cplusplus) 00254 } 00255 #endif 00256 00257 #endif 00258 /* 00259 * @(#) ti.sdo.linuxutils.sdma; 1, 0, 0,68; 6-11-2009 17:59:38; /db/atree/library/trees/linuxutils/linuxutils-e02x/src/ 00260 */ 00261