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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/*2 C+ u6 V! T, p2 R- q" Z; `- ~" \2 N
* edma_test.c. L8 Z' q: h( X% D- w, n* s# Z
*
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* brief EDMA3 Test Application6 w" T) x* B- f3 X, p" ~
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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 SUBJECT0 E& l* j \- f" I) X
* TO CHANGE.2 u0 A$ h9 @; O* ^
*
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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
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* modify it under the terms of the GNU General Public License as% a, R# A! U! N. G* S
* published by the Free Software Foundation version 2.7 ^' f! ~5 K \( g }" G$ }8 a+ I
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ L I# V: w3 G$ s/ P
* kind, whether express or implied; without even the implied warranty4 N T4 e! ~- s6 @# L
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% ?3 W! M, g8 h) s) o# A) P4 ^9 |0 z
* GNU General Public License for more details.+ W l$ N) R3 Z8 R
*/
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#include <linux/module.h>
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#include <linux/init.h>5 P! ~! G& {) M5 |- K
#include <linux/errno.h>) p9 t6 }9 u4 D. J
#include <linux/types.h>
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#include <linux/interrupt.h>. z* a* n: E( \! C/ X' ?9 y% x/ \
#include <asm/io.h>
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#include <linux/moduleparam.h>! R1 D0 {. q8 d
#include <linux/sysctl.h>
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#include <linux/mm.h>; @3 N% F) F3 c5 Y5 l
#include <linux/dma-mapping.h>& p! L- \ E# ~) T9 O4 p B0 p
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#include <mach/memory.h>/ S, J; I2 H7 B2 F& S; P
#include <mach/hardware.h>1 L9 F1 N; W/ @7 {
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>2 ^" F# V" u% F4 C0 S8 U1 e+ Q
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG1 i6 l( m' Q) q0 q2 W
#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__)8 v* s- O) m7 `2 D2 t* }9 j4 u
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)- [* [% ?. ?& w- B5 O8 a
#else) ?5 W6 d1 W# E5 L) e$ K9 }+ t
#define DMA_PRINTK( x... )
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#define DMA_FN_IN3 C& d' T. P# e: i9 y, `8 |
#define DMA_FN_OUT
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#endif: q" ]* x- i V# ~3 `7 G& J F
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* f5 `4 R! p4 |: }7 I" _
#define STATIC_SHIFT 32 @- D) p# j; t* j
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21& F; w* K$ \8 ]* V7 c* z c
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23. S7 I) q% j5 c
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;; T! D9 I4 `1 o$ D, c) d( n
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& g( l) d p+ f2 E2 H' h
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ p1 Y# L! @, V+ H4 ^
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ E% G8 E7 t) z5 F- ?
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dma_addr_t dmaphyssrc1 = 0;$ L2 G: V+ [+ v
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;% ?6 y. N: S, z0 n% P `
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;# X: H; M" @: T
char *dmabufsrc2 = NULL;% o }# ^. k7 a* z7 h7 x# X, E
char *dmabufdest1 = NULL;; n" [4 B* w& F% H
char *dmabufdest2 = NULL;. v2 R3 I7 i/ c H( k R, p9 x
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;0 M- R5 n' U V. A9 w, H
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module_param(acnt, int, S_IRUGO);
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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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