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 application6 u: G$ [9 n7 B% O3 h1 q( @
/*: b( g0 e: B- R( g; C1 o7 | e% ~
* edma_test.c
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*( L- Q. L M+ Q/ b( M
* brief EDMA3 Test Application% \3 { H, ]3 P* c) c0 v
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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 SUBJECT
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* TO CHANGE.
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*
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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* |3 y; V: Q2 _# V2 v9 Z% T
* published by the Free Software Foundation version 2.
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*" B: O3 Z* X& X5 t0 x0 g0 h
* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 Y3 z: X" g1 @8 x7 u+ q
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ g/ r$ ?' {* f9 |6 S" ^. z
* GNU General Public License for more details.3 ~% U! p: T" b& R4 g" p- `4 u
*/
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#include <linux/module.h>
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#include <linux/init.h>1 W% F* q4 `" w! I. \' c6 P& a1 m
#include <linux/errno.h> P1 i9 _2 [9 W& ?0 u2 y. R
#include <linux/types.h>$ ]; N3 C1 R* q) N
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>. M5 M& M0 s3 a- D3 v) G3 Q0 F, R* U% i
#include <linux/mm.h>
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#include <linux/dma-mapping.h>- {, A" |1 e3 u
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#include <mach/memory.h>2 r7 V3 I6 f1 h& L5 v7 m
#include <mach/hardware.h>
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#include <mach/irqs.h>5 N$ K9 V/ H8 H" r
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG8 { X% p3 @, `! y* v) x
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( g5 s7 p9 M/ Z: f& L6 J
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__). D# a1 ~$ A- a6 B4 d8 {
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else- B, e; i7 j8 ?- E
#define DMA_PRINTK( x... )! {: L. P& p) Q% @
#define DMA_FN_IN `( o1 ~0 K) e% }
#define DMA_FN_OUT# K) ~: ~; _1 G! N
#endif% e6 ^4 z4 b7 _1 ~6 U
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)5 ]4 [& [( F2 @, F+ k5 ^2 `8 ^8 g
#define STATIC_SHIFT 3- l& D3 n# @7 J, c. M/ ^
#define TCINTEN_SHIFT 20/ L' r7 ?' E; G# J
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23# F1 J9 b2 a% X) G" M$ A8 l
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static volatile int irqraised1 = 0;4 _* \7 x- w1 x8 E1 E' Q8 q, g
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);8 t X8 i3 `# T
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 D. N' q1 e/ C+ D* g# i/ L
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 K$ m% s p* W% L% b6 R) x; C) _/ y
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;* P2 H; A* `$ G" r6 L
dma_addr_t dmaphysdest1 = 0;5 O7 c- S- `8 H
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;9 c; m" L) B( o& G) r+ X
char *dmabufdest1 = NULL;' `+ l8 \, y0 r0 R. o
char *dmabufdest2 = NULL;$ g, O( {6 M0 g! E
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static int acnt = 512;- R$ Z1 F% Y; l8 E! {. y
static int bcnt = 8;( o% L: p/ g8 I+ \. ?
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);% x0 ?4 J q; M
module_param(bcnt, int, S_IRUGO);$ g# c# `7 z! j c p2 z
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