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: s! U S0 p+ c4 l5 H3 H
* edma_test.c/ Z- `2 Y" L: Y: j5 l% p% K) V6 Y$ {
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.. s; q/ s) }/ V! B
*
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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& U$ Z, y- \. s' X9 q$ Z9 J6 G0 G
* TO CHANGE.& m W, {0 W, E. P& R0 A( a: q: D, W
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ E7 [- \+ X- ^6 D
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* This program is free software; you can redistribute it and/or1 l+ }* T& J( e4 V/ U
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.- L) h9 X. w/ M
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any) B& q- [7 d1 R5 ~
* kind, whether express or implied; without even the implied warranty; w% x; G' }9 l2 A+ B
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 `) s, Z) t! x0 a, P
* GNU General Public License for more details.+ I( V( m1 S9 {( e, C& v
*/
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#include <linux/module.h>5 j! t1 e& L* z( |
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>8 f2 X L& x& `8 N$ t
#include <asm/io.h>5 e% c6 k* Z! |6 h, S
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>5 C [/ ?/ i8 t1 j U
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>" K! o/ v/ ~7 {7 T! t" y0 p- U
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>6 T" b! c/ a Z! |% a2 f
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/3 C. ]/ D! t# u& k8 p; n$ j
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#ifdef EDMA3_DEBUG5 O1 L9 e) o9 X8 E c- C7 M8 O
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) D& O' M' W# ^, Z( _- x2 ]
#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__)& c& t; [/ D& w+ m: P7 g! Q6 s
#else* F) N1 E$ A, G, V
#define DMA_PRINTK( x... )
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#define DMA_FN_IN' `+ ~. `5 _2 `# n7 G$ g3 K! t8 d# N
#define DMA_FN_OUT. F+ \. W* T, ?7 z
#endif k* `/ M4 Q. s3 o7 t
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3% D* b$ T; U/ ~
#define TCINTEN_SHIFT 20) ?! W- q! Q& ^* I* ~/ t" X
#define ITCINTEN_SHIFT 21/ Q5 ]2 _. L5 u7 Z& W4 {5 ]1 v
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;; T8 i# |: f1 j3 {
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ M5 g/ ~2 f/ `7 ~, w* s+ n# b9 J
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 T. `+ ^6 z+ x3 a. n$ B! l1 h! l
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' B. R' G& T5 v& T9 R( `
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dma_addr_t dmaphyssrc1 = 0;* g9 R7 c- ^2 \- S5 N4 L
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;- a$ w, i9 A/ m5 v) `8 l
dma_addr_t dmaphysdest2 = 0;! f L1 h" @. L5 H. C* j4 P
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;& X; e2 d/ c3 A8 w1 ]3 H
char *dmabufdest1 = NULL;% L j i; n, _2 s* _+ ?6 T6 g
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;+ i: F+ S9 H* t3 A. x+ {
static int ccnt = 8;% K* ~1 B6 a" [
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动