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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/*" K6 e: X2 b' J1 B9 B0 K7 s1 ~
* edma_test.c
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*
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* brief EDMA3 Test Application* C o6 S& b5 V Q, b
*
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* This file contains EDMA3 Test code.0 L H1 z( L* H' E2 |) R( g
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ n3 F7 @! c* @' u; |+ ?7 H
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.* x# Q9 j) j+ |8 E" R
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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
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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.
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*
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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 warranty7 n% I, m0 x! {4 q! Y9 r
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.# Q/ B0 g( |3 W7 F2 c q% p% `
*/
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#include <linux/module.h>3 x! @- ]- w f D
#include <linux/init.h>
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#include <linux/errno.h>$ {$ u! k- `& h; c: @. g/ }8 x" v
#include <linux/types.h>
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#include <linux/interrupt.h>( {! T- }) r; h7 m W4 F
#include <asm/io.h>% l. E4 a5 C: J& P' Z L
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h># [+ Q1 P+ Q, ^7 y: r
#include <linux/dma-mapping.h>
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#include <mach/memory.h>9 K. I5 I3 O$ ]# f& S6 d
#include <mach/hardware.h>
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#include <mach/irqs.h>% _* j! p. D9 _3 j: B
#include <asm/hardware/edma.h>+ Q5 T1 h- U: [9 x! x5 d* \
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG: m: O9 s, e* P# e+ S
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)" L0 a& X% U/ }9 D) W' w
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)3 p. H" u" }2 m4 B
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )7 c. f: X Q! `, X4 l
#define DMA_FN_IN2 ^ A3 l- P/ ^
#define DMA_FN_OUT1 f! t2 H# R1 r7 ^, C
#endif2 D* w" N+ I8 {& ?& @/ D" w9 m% F
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3! Z) H9 G4 [* x& E, B. h8 z4 E2 R
#define TCINTEN_SHIFT 205 b5 c9 [# @& E0 ]5 w3 s
#define ITCINTEN_SHIFT 213 @/ M! T3 p; I1 d. n
#define TCCHEN_SHIFT 221 @ a# x4 J. n2 a9 b
#define ITCCHEN_SHIFT 239 H3 f O: e3 b; k6 m: O8 u
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static volatile int irqraised1 = 0;9 g! a) I8 R) T: ~. V: r8 j2 z1 D) Q
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);' u6 p7 n8 W( v( K2 I
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) D# e' d# n8 x/ a
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& S: P/ `" j; q5 [! `( f
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;+ n% i4 j5 E f. r' v4 h! M) P' n
dma_addr_t dmaphysdest1 = 0; t% K+ `4 C9 H- `6 z% |
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;. t, N) A. z+ [# H
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;2 i: j8 Y% @8 M- w, z- y
char *dmabufdest2 = NULL;6 c( G: r$ {! N2 e% J
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static int acnt = 512;% D1 l0 R; W: O1 ^- c3 f: s
static int bcnt = 8;2 I* b& @$ J) c- F
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);0 j1 C6 Q! {. D& _, Z6 w& l& ~+ ^
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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