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.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.7 \8 R3 r2 p6 n# n5 J V
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; _3 B q; B# w6 Y5 m
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT3 F% A- f/ l, h
* TO CHANGE.4 H: N* N$ A* p! R
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or F' L% z* e: s/ J+ j8 h5 }; @4 }' ]
* 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" v% c" r# K- v
* kind, whether express or implied; without even the implied warranty5 y+ \! O1 l# R( Z. F7 c9 x# A
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 {+ ?4 e; P! s9 F8 q
* GNU General Public License for more details.2 H9 V5 o" }1 v4 `: K0 C$ n. `9 I
*/
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#include <linux/module.h>
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#include <linux/init.h>+ [" u+ P1 P, ^0 i1 E
#include <linux/errno.h>1 z; I- g% P7 s9 M
#include <linux/types.h>/ G: K6 T4 ~3 B9 b0 R, S7 W
#include <linux/interrupt.h>3 I7 q% I$ K& Z% W0 t
#include <asm/io.h>, i- @, O- Z, }( d8 \' c# a
#include <linux/moduleparam.h>; e& Y- T) _& u: E
#include <linux/sysctl.h>, c) K2 a Z$ d. b; N
#include <linux/mm.h>
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#include <linux/dma-mapping.h>- E& k/ W- I' Y% X( \4 f' y; j/ n
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#include <mach/memory.h>0 X: A- J) v1 Q- F K+ M* E" o
#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
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#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__)
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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... )) q0 o. W3 e/ C6 A$ A
#define DMA_FN_IN
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#define DMA_FN_OUT3 v: T0 V. ?; n
#endif: {7 L$ y8 p. R
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 [4 ]* M) E, W9 n+ ^7 J
#define STATIC_SHIFT 33 z- X$ z: a) X4 R
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 225 s7 i; {, \/ l, `3 L3 z) N$ A
#define ITCCHEN_SHIFT 23# s& ]4 R. S* m3 S! p6 m
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;! r R% T; C7 }
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: u- m& Y% w2 x" [8 R* }2 I
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- s4 y- e [( B3 a8 ?0 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;& H3 r& O% p& t) ^" D. m' h
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;8 m1 r% U: V/ D5 Y, e
dma_addr_t dmaphysdest2 = 0;5 o( f) | X; F1 [! n% P7 h
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;- O( r/ g0 C v8 r8 `' ^
static int bcnt = 8;: E) x2 T& j/ E
static int ccnt = 8;" ^; X( I/ V* R
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);7 t8 K) f# E, I
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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