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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/** E1 N4 e! Y% n1 [
* edma_test.c3 M6 x- R+ M( A3 J) B8 J4 N
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* brief EDMA3 Test Application: Q$ v- v" v6 L- W# {2 A5 {3 s; m
*
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; F* f( ^4 u0 G% P4 N7 _% Z8 y1 v
* TO CHANGE.* R! i+ q2 ^: ^, v! A. g# u
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 r; R9 j4 L. v: }, h9 d+ d
*
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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., b7 R( ]' B5 M2 O; ]- a
*
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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$ [" s* |- m- j8 d z
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 o' X& r- N! e& @
* GNU General Public License for more details.$ _# b6 A/ Y* e; a
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>2 ]6 B0 q- [$ H. ?" y f
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>6 F8 P0 H8 C- p0 n
#include <linux/sysctl.h>3 j) P2 {; ~* z4 ^
#include <linux/mm.h>+ q+ y6 C$ A6 }2 K2 J r9 Y+ p
#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>! n0 w. j: ?1 Q( M9 o+ k. i1 ]
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG0 L: i& D F! n& \
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ p( x1 e! j, \& o% v9 b
#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__)
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#else
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#define DMA_PRINTK( x... )- ]) [, M- E8 g }& Q( O# q# g
#define DMA_FN_IN* Z) i$ k- b4 l6 i5 h9 A
#define DMA_FN_OUT, G* K" s- Q9 K; B
#endif: F* m: n9 ?6 v9 z( I
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 215 A& d) l0 t N; E. R
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 231 ^ k0 S) G K l" L
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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);4 W. z; P, c- ^ g7 }9 r
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 Z$ s. h3 T( P" j- C- F$ A# v
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 P0 S7 t' B4 L, B& g B
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;6 U2 d/ c7 C, R6 H: K- ~
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;$ F8 p2 m* Q3 ?( Y
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;$ f+ j+ n! B8 c3 g) W+ R' ~
char *dmabufdest2 = NULL;- B' ]. _5 Y) A/ Z
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static int acnt = 512;2 N2 l/ @2 q) [; S
static int bcnt = 8;
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static int ccnt = 8;9 y2 k8 a: |: i" w9 }! K3 @+ ^. b
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module_param(acnt, int, S_IRUGO);; { ^% N+ r) V: ]
module_param(bcnt, int, S_IRUGO);1 [: X' L @( H
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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