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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/*! U/ i4 U2 d: q- E1 P& Q: {" m+ y( M
* edma_test.c
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*
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* brief EDMA3 Test Application" ] @- R2 w$ h9 }; ?$ R# `
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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 BE5 E# f; q9 s& P
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; p3 \: [# m5 u- {6 y; m) l
* TO CHANGE.+ }6 a' Y4 R' `, K8 M6 S
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. f: ]& G) |1 N( \0 v' G1 x
*
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* This program is free software; you can redistribute it and/or, u0 P0 O! F: V( c& h% k/ L/ d" j
* modify it under the terms of the GNU General Public License as5 E' R7 t2 t, e/ D) x6 j! X
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any r& @+ D* g3 i" z
* kind, whether express or implied; without even the implied warranty6 i& m# c1 t/ A$ u, p3 M5 [
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the- s, v; n* b. K3 t" V, w
* GNU General Public License for more details.5 ~3 g0 q+ y6 r+ ~. A
*/
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#include <linux/module.h>" t) I. _$ W8 D1 {
#include <linux/init.h>
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#include <linux/errno.h>, T i7 B" b' c; b: c
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>( b r2 `# \' \! C+ L# t
#include <linux/moduleparam.h>1 l7 @' S1 J E R7 {3 R, G
#include <linux/sysctl.h>5 L; k0 {7 e4 z8 D! p, g3 A
#include <linux/mm.h>1 l7 }, v7 B2 z4 N) l
#include <linux/dma-mapping.h>+ q9 r/ n1 g. ]* T8 G$ u
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#include <mach/memory.h>
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#include <mach/hardware.h># S. ~0 l$ ?! a1 p9 P+ `8 v
#include <mach/irqs.h>" \% _( |- G) x5 B
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG: g* b% V2 f1 o9 M9 C t
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG3 d* j9 l9 B4 p8 n7 Y; R
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 m0 l8 W( H9 U0 t3 p) T+ ?- y5 [
#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__)) m) r9 u% `7 d) k
#else Y! t: d- n) q& A5 _+ [
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ S) i% e- w/ q
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 206 I) _4 D* N7 \5 E7 {
#define ITCINTEN_SHIFT 211 r1 {0 j I# X2 e, h
#define TCCHEN_SHIFT 22 A7 i) p( w1 z* Z4 B- |
#define ITCCHEN_SHIFT 230 S3 Q. n( k! e3 ?% o* l4 O6 q1 i) |
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;" A0 H; M) x7 z5 |
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ H8 \. C0 a7 p! U
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 C d5 V' M& N8 u2 x: `
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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;
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dma_addr_t dmaphysdest2 = 0;7 f; Y" I ~- n V( N( r
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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;
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static int bcnt = 8;2 A. p$ _. V1 T# J) m1 M3 c
static int ccnt = 8;) a: x6 G" V. E; V- l6 w: k
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);7 L A8 ]7 [* f6 F6 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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动