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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* edma_test.c
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* brief EDMA3 Test Application, Q; y) k2 U6 f% a1 N: j- g! B" S
*
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* This file contains EDMA3 Test code.
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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 SUBJECT4 [9 [4 C ^* i4 ~& m* E+ i$ z
* TO CHANGE.$ S1 E1 f- j4 ?- ], n+ K B' n
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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/or* m0 \* g. F% ?$ i. l8 h
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.3 B: }8 h2 |0 G& S) ^9 _ [
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 t# f4 v: B0 v# c' A: h
* kind, whether express or implied; without even the implied warranty* N/ Z5 Q% _ ^
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.3 S! n( ~+ I# o8 d0 \, ^
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#include <linux/module.h>* V4 I2 O3 F! z1 n; O
#include <linux/init.h>2 |, ~1 A1 j; L# F
#include <linux/errno.h>* o- }. h& U$ z9 x, A) o) t
#include <linux/types.h>
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#include <linux/interrupt.h>0 m0 z2 Q6 c# L
#include <asm/io.h>4 W$ D( c' O9 Y2 K
#include <linux/moduleparam.h> }& A" M2 o# P2 C
#include <linux/sysctl.h>
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#include <linux/mm.h>: |2 ?& |8 K# j3 \! z: T
#include <linux/dma-mapping.h>
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#include <mach/memory.h>1 a- i8 ~0 z( M" ]% d# K
#include <mach/hardware.h>
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#include <mach/irqs.h>4 w0 D. V7 l" [% L# Y. |5 j
#include <asm/hardware/edma.h>3 ]5 Q. l0 Q+ `4 P0 g/ I
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#undef EDMA3_DEBUG* d+ G* V T( j6 [, R0 T0 h& Q
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG/ v& a# t/ G! J- I3 u0 ~( K; p
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)' ~4 s* c, E' l# d& \* W
#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__); n1 t6 r4 m* z0 |0 L9 \
#else* k% `* L) W% U) {
#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 m5 H1 m# T* z& k* x
#define DMA_FN_OUT+ F" f3 c! r+ n, t F5 V
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21* }4 L. n, r& N
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;1 c7 |% X7 f9 ?: e2 f
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ S) ]+ k' A/ K" `) f
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;$ A3 w ]# @, M. E! K* h0 E
dma_addr_t dmaphyssrc2 = 0;0 z/ D$ p# b7 I, T8 B
dma_addr_t dmaphysdest1 = 0;8 Z% @* o- s& U/ Q+ p: X1 M! E" D. }
dma_addr_t dmaphysdest2 = 0;: c3 [9 \; _; s/ ?
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;. Y3 ~ G( I5 j& X1 s
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;) T, Q! B3 Q5 Z0 \! ~
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;/ b l6 f& T) B& M
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module_param(acnt, int, S_IRUGO);0 [3 p K' x. z
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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