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 application1 G7 V" H# o/ C
/*
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* edma_test.c( L( l8 Q% h) t" i z
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* brief EDMA3 Test Application4 A7 M( v+ b8 n) ]. d
*/ ]: g T: X' d; R
* This file contains EDMA3 Test code.% s6 h9 R1 @) k9 H. i6 Q% L7 E( q
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ |: C% w2 V5 U- h% x
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/, `, t1 R. S6 }
*
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* This program is free software; you can redistribute it and/or, k" O& T8 ^; Q4 A
* modify it under the terms of the GNU General Public License as$ d. R: _# B& P! y% {0 g" G! X
* 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* }0 L3 }; D) ^7 e
* kind, whether express or implied; without even the implied warranty: {& b) r( p8 C/ G$ r% ^
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.& t3 T5 n# O% |# j1 ` P
*/
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#include <linux/module.h>8 @ j9 \ W6 Q g
#include <linux/init.h>, E0 j- b/ v2 M. J* c2 A
#include <linux/errno.h>$ c: T. `3 \+ C( [1 p9 ]
#include <linux/types.h>
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#include <linux/interrupt.h>. X( `1 H w0 A1 i7 @! w" e7 G) {
#include <asm/io.h>: }. A1 w7 ?- P9 i0 Z- @
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>- ^* j( F; ^% \- p$ m) i/ c' {+ I
#include <linux/mm.h>
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#include <linux/dma-mapping.h>) @) E, Q$ T* w: N' R. H/ e! z. Z. C
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#include <mach/memory.h>
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#include <mach/hardware.h>9 C' N3 S3 N I$ x
#include <mach/irqs.h>! T" y& g9 P& j) d
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG! }% x" S: F1 _: p, p' X
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 ]$ V. ^0 v- B* F: h- J
#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__)6 U& q ^1 k3 s ?& q, w8 O- [
#else- r' J4 |& f2 J+ F8 y& [+ G$ l; E* ~
#define DMA_PRINTK( x... )% J0 W2 ~9 ?) x3 P& t
#define DMA_FN_IN
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#define DMA_FN_OUT; Q# C i. B. A, k7 H1 w
#endif3 ]8 A) |2 E- Q7 C# A9 B
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): v- x& l2 r9 Y7 H5 f5 A; Y
#define STATIC_SHIFT 3# a' f. M$ W4 L5 w) B
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 217 ~6 F- T# f5 @" n$ N7 ]
#define TCCHEN_SHIFT 22' w9 D8 s; ?. \8 c p$ w% s5 y
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;& n6 \! J) k0 s6 V4 T
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);0 E, _' S. k+ m
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);) i$ O$ y8 Q' ^
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dma_addr_t dmaphyssrc1 = 0;( U' ~- I6 t2 S) ]- J: S% L
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;: x& V' w8 y. l# A9 |2 ^" [
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;, Z& x3 c6 {) [2 ?' l
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;" F5 j G7 i1 L. n* p
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static int acnt = 512;, L0 B: h# B6 E( Q8 {
static int bcnt = 8; z! s2 E: C" X' t4 p- V0 l! E3 o
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);9 D. d' T: A+ b9 S: u0 Q8 `
module_param(bcnt, int, S_IRUGO);* P9 a& y- S. h2 x, V, |) {* u! V
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