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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/*6 l& f. `' k; R; b
* edma_test.c& z' x8 {) b- X/ x' i3 F
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code./ T. a6 G6 Y, X: G) F6 h
*
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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+ T# r I- S6 G( O) l3 z7 v
* TO CHANGE.$ Y1 i* W7 }3 L' J, ~, j( [
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or' {2 m7 Y$ U& a+ j, y, s, R$ v. X" v
* modify it under the terms of the GNU General Public License as3 B R& y& I& n& i& R3 C6 r5 D
* published by the Free Software Foundation version 2.2 P6 ?" {/ m2 I9 t# _6 @
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any' F% K. Q8 G+ t# q/ L; X
* kind, whether express or implied; without even the implied warranty8 i" q% P! K+ L$ x. D( s
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 O' q5 D" I& [5 c0 ^) q' A
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>7 ~' N, E1 h$ K) i
#include <linux/errno.h>
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#include <linux/types.h>; E7 s% ^% t7 O5 r1 x" E+ d9 ~
#include <linux/interrupt.h>
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#include <asm/io.h>/ w0 }3 b8 l+ W- e1 n# A
#include <linux/moduleparam.h>% n+ l. @, d; i( p5 P- Z
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>- {! ^5 {# }+ l; b
#include <mach/hardware.h>
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#include <mach/irqs.h>. G" N6 E. c9 {% {
#include <asm/hardware/edma.h>* ~$ |3 s, T2 Y6 M5 j; |1 E! G
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#undef EDMA3_DEBUG- V$ E: n; x5 l0 |/ l
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG F% \; ]0 F* h p- c& f
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 u& I# j; N# Y) C" T% M5 v9 O$ d
#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__) _- Q3 t' }8 n( c( {; t
#else* H; c, s* @' i7 E }6 x) c
#define DMA_PRINTK( x... )# s8 g8 m& F1 O+ k
#define DMA_FN_IN
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#define DMA_FN_OUT5 K3 {% `6 G+ f5 M- K: i0 j
#endif( w% o# r; K/ |) O: ~5 x
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)9 [( q2 T+ U! k% T8 H4 G0 A
#define STATIC_SHIFT 3( q8 N2 `7 k) C( U8 e* s
#define TCINTEN_SHIFT 20) B3 o% E$ f7 M `# {9 P" b
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 238 J/ j* @" h, i B
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;+ ~, i E6 c* z- L o Z
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% ]6 J$ e& q& M R( j9 f- O: X
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);0 l5 z) I3 l& n0 l/ k) Q( Q
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;. }5 K9 \8 E$ N/ s, L
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;" F, N4 i1 F4 y1 W: H0 s
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char *dmabufsrc1 = NULL;) I2 Z* R, N- v" ^6 B9 x9 I: a6 b0 j" L5 e
char *dmabufsrc2 = NULL;/ I3 ]9 u T% p5 K
char *dmabufdest1 = NULL;) g* p5 `! s4 R5 W! p- A
char *dmabufdest2 = NULL;
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static int acnt = 512;0 P3 E5 w, ~$ y! n" |
static int bcnt = 8;8 ]. q' b0 \; T' m% j( w: s/ s
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);" w7 E2 Q/ l K, ^2 y
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