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 application5 j8 {' [7 S# i5 P" f
/*( v3 j! V: _' H, |
* edma_test.c, C4 T T c4 {3 f
*+ I0 a1 k+ Y5 a
* brief EDMA3 Test Application* B0 u' g. f( `( f" ?/ Z; B
*
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* This file contains EDMA3 Test code.- |/ O; u- Z. f' ~; Y2 e- c
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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
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* TO CHANGE." L/ | _7 @" z8 \+ @2 g
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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/ o d M% }& P% n
* modify it under the terms of the GNU General Public License as7 C& D1 g! H! b; c
* published by the Free Software Foundation version 2.
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*! ?) h9 s1 R" f$ @
* 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$ Y8 ]9 l- U, H
* GNU General Public License for more details.
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*/5 q: e% Y) r9 l1 k ]. G3 V
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#include <linux/module.h>( h D% v2 c" d3 }' e6 N
#include <linux/init.h>
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#include <linux/errno.h>$ c5 N5 @% u* _: p1 I$ a. Y# @1 M
#include <linux/types.h>
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#include <linux/interrupt.h>* I6 G1 D D% t, e8 L- @% M: l
#include <asm/io.h>
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#include <linux/moduleparam.h>. q: z* I, _' s* ^
#include <linux/sysctl.h> V/ Z. w& b2 `3 j2 ]1 C
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h># d5 V/ q4 a2 R" c" L
#include <mach/hardware.h># d% n8 {( y' e4 I! D3 g$ I
#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*// ~* j1 g' i' d8 |
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#ifdef EDMA3_DEBUG& t0 o3 A% h* m/ W) u7 _
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS) }* a7 @7 u! B1 e8 e! ~ W3 W
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)& J" C+ n" C, m
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else4 S% M! w' q$ A
#define DMA_PRINTK( x... )4 w2 ?& M7 o; q$ _2 k' _
#define DMA_FN_IN
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#define DMA_FN_OUT3 a# Q y9 b. E' y3 Z7 L0 w
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 z0 @: _; K7 i+ G9 L& Y0 y
#define STATIC_SHIFT 37 }, q8 n q7 F8 N: w
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21/ `& M" y8 \* v1 W- }8 U- _
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23* V+ R* ^5 i7 `
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static volatile int irqraised1 = 0;6 M% o" U* a8 v( c4 F5 O p
static volatile int irqraised2 = 0;; c+ z9 M4 }7 ?( K
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" s0 e9 T# S+ H" p! k
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. r6 \ ]3 T c. L/ D
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& `( w- U# |) t) |# Q
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;9 ]; e9 ^8 Q& W2 J/ b& j* a
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;" ]) \8 A2 e* F+ z' O: ]) Y; r# I
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;( T5 z/ Y! I3 d
static int bcnt = 8;6 m A) F: s1 ?6 \
static int ccnt = 8;, _) {1 e- j& f2 y
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module_param(acnt, int, S_IRUGO);: F7 z/ N: `' x$ a9 t
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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