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" t9 @; Z0 A; c8 J
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.( G; `, z: s' a: V% V$ F. Z
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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 SUBJECT6 w0 Q1 V' R& h% I, y
* TO CHANGE.; v, N" r! J5 v( B+ n6 ?
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: B+ j$ ^9 `: C! @4 u
*
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* This program is free software; you can redistribute it and/or! H. G% c2 i$ t
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty5 ^- {) c, U- e0 @/ e9 O7 |7 c
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 Z( j$ E L+ H3 a+ ~0 C4 e5 W
* GNU General Public License for more details.% |4 X# V! \) L: H! e/ V# G+ X, p
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#include <linux/module.h>3 ^- m$ i. m" U
#include <linux/init.h>8 L) ^5 ~4 @5 m% p5 w
#include <linux/errno.h>
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#include <linux/types.h>
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#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>8 j) ]2 E1 h- I# |% Y
#include <linux/mm.h> a1 K8 S' V9 K0 K/ a
#include <linux/dma-mapping.h>& Z2 o. j) v( D4 v Y
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#include <mach/memory.h>
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#include <mach/hardware.h>5 |5 w. Y* ^. u; L
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG' L" H' {) l3 C3 n" e
/*#define EDMA3_DEBUG*/0 U; D5 K1 ~+ j0 _+ g4 R
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). u6 q' f9 w8 Y/ u6 i0 n
#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__)
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#else& G# X) B" c0 u/ V- a a, y/ t
#define DMA_PRINTK( x... ): _& c1 O% x: P! r5 a c. D4 V7 ]
#define DMA_FN_IN! N1 ~% r! U9 K2 d' S+ {
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 30 F0 o# D! \% @
#define TCINTEN_SHIFT 20, c. P& u5 i, K9 E' K
#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;( c$ z) `0 P6 S8 n) w8 X
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);+ ]% y0 D2 j- m7 W6 j2 y' p9 A
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" U/ W$ p$ M" b) o, {, W
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;1 Z" D0 K2 {! B2 a, S$ C
dma_addr_t dmaphysdest1 = 0;5 {: i f* f4 W% p# @/ H: ^
dma_addr_t dmaphysdest2 = 0;" Y+ r. z. m* p1 S# j3 Q/ }$ f0 f: r5 L
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;$ q9 w- E/ Z) F+ p+ H
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;3 b5 Y4 U a( G" S
static int ccnt = 8;' Z) V) D4 T9 Z/ B* U+ U
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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