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- ^1 A! D/ [* I y: m* j7 T7 V
/** M b& ~( {' R) D m4 h P4 D& x; }
* edma_test.c+ |% \8 X$ S6 B$ Q$ \3 H
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* brief EDMA3 Test Application$ e- U6 O: [3 Q- \" j) g8 B! m
*
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* This file contains EDMA3 Test code.3 M2 c, f7 s& i
*
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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.6 r: X+ m: a4 |- r7 S9 G
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ @4 r' z0 r6 P6 e H2 f$ h; X
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* This program is free software; you can redistribute it and/or1 \, d; z$ s+ R. e; u" d
* modify it under the terms of the GNU General Public License as/ t, |4 L" J. V: ^* R6 x" z
* published by the Free Software Foundation version 2.: b/ s, c' V2 Z) `/ S/ v) `& j
*! N- n8 x1 _! k7 J# e$ A& c+ Q! t
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty% f- m$ o1 c! ?4 ~; p
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.; [# n. _" k- k, B0 V: i9 B3 }
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>% }0 ]. q3 I! J' I7 j
#include <linux/types.h>
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#include <linux/interrupt.h>! G2 u5 R6 I" ^% f) }4 T# V$ g
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>3 w) B4 C5 A' N8 H5 P
#include <linux/dma-mapping.h>/ R& I( D1 o; q! R
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#include <mach/memory.h>
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#include <mach/hardware.h>% n) {: v2 P! e
#include <mach/irqs.h>3 R: t: J9 S4 b* _, N6 P" O
#include <asm/hardware/edma.h>% R. L/ t. j, K% l- q+ J) A
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG5 E# m. n1 o- P6 g! @6 q9 E
#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN; F$ t% R- x) I. U+ `' G
#define DMA_FN_OUT
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#endif0 l7 y$ ?# m3 s9 V1 L% [
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)5 Y" h3 r% {2 P3 `
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21: O* C/ k. s# i- P4 `
#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;* L2 P, W* A. a: K5 J! U
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! }2 e1 b' K6 L5 U
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);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;4 w( M9 z- n2 H+ b& p% d
dma_addr_t dmaphysdest1 = 0;4 Y8 ]5 `( C2 O/ r* a8 ]
dma_addr_t dmaphysdest2 = 0;0 A" w+ m- l6 w9 L& V$ Q+ N* ^0 S
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char *dmabufsrc1 = NULL;5 X- |# Z6 G7 K2 r: [" f' Q
char *dmabufsrc2 = NULL;/ `8 `. h- y( N b* C2 d* ?. ]
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;/ d0 }9 [+ q C/ ~# P4 ~
static int bcnt = 8;
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static int ccnt = 8;
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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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