OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*5 T4 p: C( s' ?$ \) i
* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.) d/ Z/ \! L& B, A/ k+ b
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 N2 J" E" |* }, }
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.) m8 F& v* R: s g, s
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' b; Q' z1 Y5 ^4 @$ H
*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as: M' H: P. @/ W, [ M9 l
* published by the Free Software Foundation version 2.5 u3 f$ h% Y/ q$ h
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 |! G: g3 i4 U& z
* GNU General Public License for more details.! Q; c$ L+ ^0 Z6 @
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>6 u: j* k* U( ?# \ y/ a
#include <linux/interrupt.h>; J z* v& v. |5 v5 m7 x) b& G; }3 S
#include <asm/io.h>
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#include <linux/moduleparam.h># b- i+ @+ w7 [4 ?( S7 G; a
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>, n$ a$ h- B% J0 k; o: V
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG* i7 c# Z p9 f" N6 H
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# W; w) x$ [7 d2 G: W: `9 R7 y
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__). r- `2 {6 b6 }& t0 G" h
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__); X) h) F& s, N, Y% U1 ]* b
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3! J* W5 n- d V. p2 m
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 218 }$ C$ h- U: H* ?: x, x$ K# m; N
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 238 ]- }) D& T6 Y- b
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;, l b+ ~7 J0 A+ D! N
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 o; O7 n& c* X( h( g" |' f
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 k+ |" p1 Z* d1 l
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& G3 m4 W# _0 e; t, W' b2 I
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dma_addr_t dmaphyssrc1 = 0;! Y, S2 g5 G2 j5 ?& \( t, \( K& k7 J
dma_addr_t dmaphyssrc2 = 0;) B; x2 X8 a" E1 ?6 t
dma_addr_t dmaphysdest1 = 0;# v7 w* b; L. i$ [
dma_addr_t dmaphysdest2 = 0;/ M2 r, Q" l! P. z; M2 ]
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL; s2 z0 g( t& u- j
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;: Y4 O( @7 B) K2 w
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动