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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/* S! N1 B- a( K1 x
* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.6 o! ?$ b0 f. C, r
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE. [1 p2 U$ a% |+ N6 c8 o% q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE. x& Z! ~4 ]. L" _2 H3 @
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# ]9 A( i* d# d$ G! S2 U: R: o: C
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.$ c% i: f1 P v! T; j
*
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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.4 t: G. d1 Z8 o" Q$ S2 a
*/
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#include <linux/module.h>
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#include <linux/init.h>. Z ^$ u' z! l8 y' Q
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>- b# Q/ N" n" L5 A, C. b
#include <asm/io.h>/ v+ N+ G) r. F% U. q/ i# O0 C# h
#include <linux/moduleparam.h>$ y" h: V* H9 s& J& U `
#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>
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#include <mach/hardware.h>) V' X8 ^" K" O! K6 S
#include <mach/irqs.h>) O( k& F& T8 `# D$ B9 p2 l: L" w
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/" j' h2 c; |! {. M, Y: @
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#ifdef EDMA3_DEBUG1 O6 {2 S9 i: |- _
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 ]' Y, Y! x' ^5 |, [" l
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)! r9 Q7 j* J% U) G' w) j
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). I- [3 U+ ~) k" I
#else
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#define DMA_PRINTK( x... )* T! M' d6 Z) K9 k8 H/ r8 K1 ]' J4 ?
#define DMA_FN_IN
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#define DMA_FN_OUT. [1 n8 _* \, D
#endif, F, b r/ Z/ s, n% o i9 x( h# Y
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): g+ V0 H% q$ s$ i& U
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20$ b) @6 Z. p. ^$ p
#define ITCINTEN_SHIFT 21+ _" P. t' L8 f' ~$ b3 j$ A
#define TCCHEN_SHIFT 22- e; K. \- Q3 X; E. {# K
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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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);6 }8 a" `$ I1 X* T
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dma_addr_t dmaphyssrc1 = 0;& f2 L5 d- y2 L" a$ J: L0 Y, j
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;5 S3 P6 E2 {2 ]; ^/ [
dma_addr_t dmaphysdest2 = 0;5 l: v& k, A" x+ H. I
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char *dmabufsrc1 = NULL;; [7 B7 \- d5 O8 N
char *dmabufsrc2 = NULL;: {. I: h! ]* {/ ?: C" a
char *dmabufdest1 = NULL;3 @0 S2 I X# H- H, _0 K) ]* }5 G
char *dmabufdest2 = NULL;
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static int acnt = 512;: c) B5 U$ @* r
static int bcnt = 8;* Z4 S! \2 P& V; S8 s
static int ccnt = 8;: o$ O4 ~2 f: D. `% Z
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module_param(acnt, int, S_IRUGO);/ k1 q7 x/ k% X3 E/ E6 N& R
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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