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! Q) g' P5 n" V
/*
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* edma_test.c- k+ l+ L! P) u6 h& Q8 [
*
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* brief EDMA3 Test Application9 w( b: o7 d. T
*
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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/ }0 d6 A& f; E3 U& T* I
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.4 Q* h$ Q8 t! o( H- q& @. u; e
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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/or9 f5 ?6 v" A; l7 P d9 D
* modify it under the terms of the GNU General Public License as9 J' y' N: G0 O6 t% o3 U; `7 C
* published by the Free Software Foundation version 2.; G/ ~7 _$ X( j. I' h) V2 o
*
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 o. A6 @8 i" h0 X+ N
* GNU General Public License for more details.7 V5 H0 Q: I7 S% |1 O
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>; w5 S8 o# b# c! H5 P4 t' i
#include <linux/types.h>' _/ n0 j7 a7 E- Z' o( ^8 A
#include <linux/interrupt.h>
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#include <asm/io.h>9 W" N+ t0 Y. Z1 i# ?
#include <linux/moduleparam.h># ~& i0 V( _* u$ I9 E
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>1 M9 B' N. ~) B$ }! g* }( R
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#include <mach/memory.h> v* h$ F& l% J. N, D( r- @5 a U5 d
#include <mach/hardware.h>! ~9 U E" `- U/ {1 c5 n
#include <mach/irqs.h># @) Z* R: |: I. s# C! Z
#include <asm/hardware/edma.h>- L( Q4 q# D2 a
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/' W4 ?7 j$ q% G
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#ifdef EDMA3_DEBUG% }% }& N& ~- H9 R* `* f* D
#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__)' I, Q" g/ U: i; R" M
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )0 a+ T8 _7 O* B d
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif7 V" v- j# z3 v! Z
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% m. r8 P' O+ F4 _ H
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20% A* u) m6 Q% H* R
#define ITCINTEN_SHIFT 21* c% k" J: l" h9 c. m, }7 g% r2 ]
#define TCCHEN_SHIFT 222 h3 ^9 k/ A& _& R8 m; p6 G; ~% p! J8 _
#define ITCCHEN_SHIFT 231 i2 d" P) M% K! Y+ @
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static volatile int irqraised1 = 0;/ u: |2 d. A% o$ x# E2 r3 t
static volatile int irqraised2 = 0;% ?) a! P- F0 S/ A# V
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; u, v4 v! X F5 E3 p% ~& C
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; v! C+ k) ^/ N" t0 a
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;& ^! K, v" t' D1 Y2 `
dma_addr_t dmaphyssrc2 = 0;3 Q; E! Q. V8 Y4 G- }1 S9 m
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;. O9 C; C# A- v2 l+ ~7 b( m
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;2 N3 m4 _- \3 U& J# U: R- f
char *dmabufdest2 = NULL;
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static int acnt = 512;; W; h! V1 r" v) r
static int bcnt = 8;4 y; i: h) n' v4 w$ c- L& e
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);( n8 [5 u: [+ X) h" G
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