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 v1 r1 P$ Q/ s: A* j% e
/*9 ~, I2 h# E8 ?) f+ p" `7 k3 k" g7 f2 T
* edma_test.c
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** w1 b4 w" t7 L, v0 F0 I9 S
* brief EDMA3 Test Application7 N4 y& `' }7 u
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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 SUBJECT
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* TO CHANGE.1 }/ Q; T5 N: R
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 ]- X; d4 t3 A _
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* This program is free software; you can redistribute it and/or. V9 K& J% v! p) D# P" |2 i% d5 P
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.1 I3 h- H; R! h
*- V4 _$ e& J) T( V" f
* This program is distributed "as is" WITHOUT ANY WARRANTY of any' n* Q3 Q+ V# l
* kind, whether express or implied; without even the implied warranty) x* O, J% x0 U
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the- M/ J% Z' a9 C; M! v5 O
* GNU General Public License for more details.
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*/
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#include <linux/module.h> E6 N$ t8 W* S* H: ?/ V6 J) Q
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>5 ~8 { D# [$ |5 U8 t1 M2 V8 p
#include <linux/interrupt.h>: ?+ |$ P) R! a/ _+ `
#include <asm/io.h>$ M/ A1 f j$ n
#include <linux/moduleparam.h>
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h> Z! ]4 M8 I0 H
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>$ _" d8 Q' k2 A
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#undef EDMA3_DEBUG7 q& p; M9 W5 C# g# z
/*#define EDMA3_DEBUG*/; K, T! s" Y" W
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#ifdef EDMA3_DEBUG
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#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__)5 p* ]: N0 o3 q; r2 q
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else# W7 C& K K, N. ~ C% C, l
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT& b$ q1 s8 { c* v" a
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); G+ k6 _" J) P0 b; P
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20 G; q/ v8 _. }
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;- L" T9 {3 R$ m0 o+ \& z0 H9 G8 n
static volatile int irqraised2 = 0;! c7 {/ Z: a7 r
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; |9 O( _, ?; d: L z
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% \/ T& q8 N6 W
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;
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dma_addr_t dmaphyssrc2 = 0;4 z% \! O0 @4 U' P( w* B
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;: ~8 ^3 Y1 F' N; G
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;! T+ h3 S7 S* r( [' V" V: I3 u
char *dmabufdest2 = NULL;2 L6 \5 y8 V& P4 S
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static int acnt = 512;& I/ R# V. Y3 ]# k2 @/ ]
static int bcnt = 8;/ e) {/ u9 R( Q$ L
static int ccnt = 8; D1 r7 z: 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