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 ]+ G5 n# t- J, H+ s6 B" ]2 _
/*: i) a* q- I0 c$ \: ?
* edma_test.c
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*: E+ x% ?. M* J+ l) z3 Z0 Z
* brief EDMA3 Test Application
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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+ ` S4 k7 v, j1 M2 W- k9 [( |
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT( {( I s5 O6 |
* TO CHANGE., [8 @5 x8 @3 Q/ i
*( \8 j. ~" h3 a1 Z: G/ p7 n i2 @
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or$ ]( G+ X6 T6 ?" b, w& O/ t
* modify it under the terms of the GNU General Public License as. W8 M0 ~. r2 b& ~" Q
* published by the Free Software Foundation version 2.1 o% p' L" A p0 f5 Z7 |
*
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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 the
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* GNU General Public License for more details.& ?+ A# c/ f% O) `6 x& c
*/
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#include <linux/module.h>3 @2 J( e3 m6 E- P
#include <linux/init.h>( P [( Q- x3 K) P0 ]4 v
#include <linux/errno.h>
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#include <linux/types.h>5 b- I" Q. {5 |- b5 S: ~: H
#include <linux/interrupt.h>7 b5 r1 k: w1 p8 @
#include <asm/io.h>* @2 a+ ~% n( S, {- _) |, H; H1 i; H
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>) N1 x0 M5 Y" h% Q
#include <linux/mm.h>3 a W7 B# V: ?6 m
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>3 s& s! ^- R6 j* R$ L2 u% |& p
#include <asm/hardware/edma.h>% G# D4 s3 S. z( c
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/4 g$ e$ w4 K2 ^+ [9 X/ o
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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__)3 e9 z; w( @4 _& U( ^
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else& I( a0 y; j' K
#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 s& T6 L* T7 p l. U
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). d( V, @& _( f1 n- P% z
#define STATIC_SHIFT 3# n9 K9 @( l5 R& y3 X
#define TCINTEN_SHIFT 20. C1 l/ N! w5 O
#define ITCINTEN_SHIFT 21! ]8 U6 g, z+ n. M
#define TCCHEN_SHIFT 22. T: i } }; M& `- ~7 w
#define ITCCHEN_SHIFT 231 N" F+ \1 Y, d; R) v
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static volatile int irqraised1 = 0;1 O, B$ |0 e1 H3 r- K
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);
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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;* q% l4 a: o6 E( i% }$ E
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;. [1 u) O% O. f0 N* r) G
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char *dmabufsrc1 = NULL;$ X- ]; Q C; Z' N( S
char *dmabufsrc2 = NULL;" w4 S3 M1 `+ t* G# B
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;; {' }3 G0 E- `
static int bcnt = 8; |, i5 T! c3 F
static int ccnt = 8;5 M8 d* n& @: ^5 e) N0 e B
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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