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( R/ y) f5 a. W1 M; H
/*
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.8 T2 v; u& E" C4 _& f( \ W) T2 q
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) X. u" [. u8 B9 [3 v
* TO CHANGE.4 g; j( |) z, r8 a
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 @, Z2 ?0 z/ w! y7 _! C9 |) F
*
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* This program is free software; you can redistribute it and/or6 V1 I4 U; M: Q, d7 P
* modify it under the terms of the GNU General Public License as3 p: _4 M, F* f3 C" ]
* published by the Free Software Foundation version 2.- m- ^3 T& h0 c* e3 ~
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 `! T# k$ }; X- K8 X2 p
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.$ H0 K( L) T0 `2 M
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#include <linux/module.h>2 b& H4 A* {4 o
#include <linux/init.h>
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#include <linux/errno.h>+ \( I0 n4 b! F2 {8 c0 @) W
#include <linux/types.h>: F+ [/ k( G# [8 ^' z) h1 o: ~
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>+ t% d$ d, ?0 @% h2 E
#include <linux/sysctl.h>
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#include <linux/mm.h>2 t% l" F3 p5 O% q
#include <linux/dma-mapping.h>& n4 c& K- f' o3 p9 A
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>' x8 }2 v2 ?6 L1 n
#include <asm/hardware/edma.h>* U8 M6 c- w4 V4 l( B/ c2 T, }
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#undef EDMA3_DEBUG: Z, T! H9 y9 k1 ]
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG' s; S/ ^1 I) n4 Z3 C' ?
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else( b3 x$ ]7 b# d
#define DMA_PRINTK( x... )
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#define DMA_FN_IN0 }( Y d: C) A J! G
#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- Q) n- M8 `( @0 b
#define TCINTEN_SHIFT 20# s3 I0 @6 R& [" Y
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 234 d4 a! y+ [+ f- ]0 ^
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;0 H! p7 h% }: A' u: n f+ P; H
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" P a2 l* ?# Y: r6 I; ]; T
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 m1 q* }8 k6 J! M2 h3 [. q3 n* D
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;0 V) |3 z: M! f3 [% o9 w/ w
char *dmabufsrc2 = NULL;9 L/ L B) V2 p: `8 o! k4 f
char *dmabufdest1 = NULL;2 G$ u- ?8 z' b a( r& z. T
char *dmabufdest2 = NULL;% I) E7 w! I% Z1 e: l4 z' J9 N! n
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static int acnt = 512;
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static int bcnt = 8;9 ^6 T7 p9 a0 ^! Z3 d$ v0 \$ X
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);& u! g; Y, z) P
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