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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/*
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* edma_test.c2 q! H& ?3 d( r0 U
*
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* 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: C' ^ n& S& m; W8 A
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 D) m( C1 F6 c
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; X$ O8 S& S1 ?1 @
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* This program is free software; you can redistribute it and/or' y) t# B* B; U0 @( A {4 j! s
* modify it under the terms of the GNU General Public License as
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* 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 any4 X" A/ T' }# s, i: R& ?$ O
* kind, whether express or implied; without even the implied warranty! g7 ~& S6 H/ b8 J' @( J
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) ~8 u, k) j7 K: q& [
* GNU General Public License for more details.
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*/
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#include <linux/module.h>% Y) ]1 ?' Y# M9 O
#include <linux/init.h>/ O% n2 s4 |5 H
#include <linux/errno.h>
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#include <linux/types.h>4 j" T. I2 g3 r# U4 b
#include <linux/interrupt.h>* H3 `; l/ Q- D7 u' W2 q
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#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>4 n6 k- A* z. s! F
#include <mach/hardware.h>
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#include <mach/irqs.h>1 c+ g' M5 f8 R' P
#include <asm/hardware/edma.h>2 }% k8 Y% Q6 g; M: v
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/2 P: {3 Y% G" W j2 S
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#ifdef EDMA3_DEBUG5 w: Q' E: Q) _! n: ?- R @
#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__)" X% D( [4 M t4 a, v8 o. F. A
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__); G0 N0 _" p- \) x; H
#else
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#define DMA_PRINTK( x... )! F& D& a9 O; `( y6 |) w$ D
#define DMA_FN_IN
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#define DMA_FN_OUT0 P! Y" \& C( W3 y
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# u6 M- X% b- U: ?
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21. x9 R" {5 N9 S8 L. Z7 F
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23! m. _+ H5 c, ~+ e4 F
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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);9 ?9 j3 X5 M E: B6 E: [
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;6 z5 I5 X8 D% ^% X
dma_addr_t dmaphyssrc2 = 0; u! t, g: D, a6 M
dma_addr_t dmaphysdest1 = 0;) x5 u, ^2 p& j" y- P+ t7 ?
dma_addr_t dmaphysdest2 = 0;' g6 m( X7 n% Z
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char *dmabufsrc1 = NULL;2 Z. ?. o5 w/ y# G/ _
char *dmabufsrc2 = NULL;4 N0 O" C( a) V. b% w
char *dmabufdest1 = NULL;) M6 M# P" _' d* F! w$ j% g4 W7 x
char *dmabufdest2 = NULL;
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static int acnt = 512;# ?) j- E8 f6 C# o+ S' l% u
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);+ h* q8 [3 Z% G) o! C- P
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