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" k3 F) b6 k7 o, d
/*9 B6 t1 g$ X5 |9 N' x
* edma_test.c
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*
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* brief EDMA3 Test Application
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*% ?2 L4 S, z% M" M- T2 p
* 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. B) ]9 e! Z/ V% g) R( X# u5 h, ^
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT3 j7 K" W6 A/ M, Z, V4 e- ?. {# b; _
* TO CHANGE." p) _9 q1 B- t6 Z
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ r0 U; l) X' G w: O7 }4 y$ U
*
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* This program is free software; you can redistribute it and/or+ }5 n: [+ l# J' ~
* modify it under the terms of the GNU General Public License as* P2 A0 u( v: F! j- M# |
* published by the Free Software Foundation version 2. C d n# q( G3 ~7 s3 c
*/ C; K% G) K6 t U+ Y! ^$ B4 {, k
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty6 z+ S+ B1 ~3 \6 ~
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. b' _( t# z" [# [
* GNU General Public License for more details.- Q5 v$ r" X9 E" b, b2 z1 a) ^, [
*/
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#include <linux/module.h>
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#include <linux/init.h>" a0 p, o( H# f& n- v, _0 g
#include <linux/errno.h>
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#include <linux/types.h>" J1 }% p0 I, t! R1 P7 [- e
#include <linux/interrupt.h>* ?; n% M+ T" V2 R Y2 Y
#include <asm/io.h>( l/ c- h5 U" {
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>7 d7 @; o% a' T+ T! \' [
#include <linux/mm.h>/ a2 m. }9 X5 U; D
#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>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG) ]* f ^' Z- a/ h) M
/*#define EDMA3_DEBUG*/; P5 P" d" `2 `2 e. m; j" O/ n) v4 X
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#ifdef EDMA3_DEBUG7 l4 x2 s5 c% d& x- _
#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__)4 P% D7 Q: D, r- R/ I
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else2 t* r2 b& p, A4 N I7 n1 g/ g$ Z. Q
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#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" p5 Y7 `- {. U0 V( X+ R* U. b
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21) l" i0 ~5 `6 |! h0 a
#define TCCHEN_SHIFT 228 {+ I6 c1 i1 K6 `! s
#define ITCCHEN_SHIFT 23: S% O9 R- A( @- n/ D8 L
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;, b# P! j( ^0 m4 X
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 o3 g7 X: P2 ~
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);' `6 n5 r6 D8 j) H9 `/ T. a O/ P0 D
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;6 ^- i0 y) P' t( ` I- k3 u: p: \
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;% Q9 }% F8 |% ^+ V: b7 Y
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
char *dmabufdest1 = NULL;) b+ y. B' W9 M. Z% H9 ]5 ]# e
char *dmabufdest2 = NULL;9 q# }7 R+ w. w+ X$ U' h m
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static int acnt = 512;0 U" X' n8 z- m# V, B0 L! t
static int bcnt = 8;; y7 P9 X; h* {) f" P1 N7 U
static int ccnt = 8;0 f, }. ^) c6 f# g( c
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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