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( l% Q8 i9 P, B* c, U5 W7 e) v5 i
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* edma_test.c3 A- [( o9 {! e' Y/ L0 H# ?9 y
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* brief EDMA3 Test Application7 @, P1 n0 f6 Z" r) U
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* This file contains EDMA3 Test code.
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*
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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
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* TO CHANGE.3 N) j9 P7 `8 @! h; Q& N3 c
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" ~( ~7 U/ v) o2 x d1 z' c
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* This program is free software; you can redistribute it and/or" _& u* L, a0 W% U6 L
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any; R- u/ \! Y& n: y
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! W& d" f q4 L; o. r' q; ]
* GNU General Public License for more details., R, x# I x) L3 K! N' H3 |
*/
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#include <linux/module.h>4 r" a; t8 Y! b# M
#include <linux/init.h>: ~* y+ C& ^) b% _/ V: C
#include <linux/errno.h>/ N+ s7 ~1 D$ `/ T2 E
#include <linux/types.h>6 E1 g3 h5 [( a7 ?2 z( ~
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>; C) z- `" `" f' x4 B
#include <linux/sysctl.h>
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#include <linux/mm.h>8 K: M/ V: _6 h+ y& ]0 l( f5 ~# x
#include <linux/dma-mapping.h>. K# q- r/ \4 S; n8 r$ r
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#include <mach/memory.h>
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#include <mach/hardware.h>0 w6 L. {6 I0 e% K/ I, \
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/ k8 H; R0 J/ p- i
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#ifdef EDMA3_DEBUG
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#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__). r* J9 B, i9 k, P6 o
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... ) z/ J2 y+ n. E) X* q
#define DMA_FN_IN0 y$ C* {4 P j3 x0 m0 t4 U# r4 M
#define DMA_FN_OUT
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#endif; n9 H& M0 M) d& R; K
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* u" T: E1 |; J7 @& Q$ r$ N
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21+ H% J+ E( W1 V3 b z! l" s' `
#define TCCHEN_SHIFT 22! n2 e7 H: y6 M6 y3 b
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;- h5 H/ C/ g2 `- Q7 h
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 X( y5 M3 l: x1 Q
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);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;) ^! S6 B4 X) O5 p0 `) v
dma_addr_t dmaphysdest1 = 0; d7 R# }4 }) \- t
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;! Q: |# e T: U' @) _ P3 t7 T1 B
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static int acnt = 512;# A, t4 G( T+ o' L' @+ o
static int bcnt = 8;. ?2 P' \. f, o8 I
static int ccnt = 8;
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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