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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/*" g) J7 n2 i7 t
* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.8 C4 f* q6 h/ V
*
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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 f' B' n, X4 u4 e6 y
* 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
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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 warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( H8 R7 a7 x% l
* GNU General Public License for more details./ C6 U. f C) _ V2 @" C$ u8 |
*/
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#include <linux/module.h>2 V: @+ N8 `0 O, z
#include <linux/init.h>3 S& Y C4 b" s _2 ]1 P1 h1 y: B
#include <linux/errno.h>0 }5 }% |- R5 Q6 J( W0 y
#include <linux/types.h>4 m/ `9 b" w* s) i
#include <linux/interrupt.h>
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#include <asm/io.h>0 N2 X6 T' u O
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>) `1 X! F4 ?1 U! b6 v4 e
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>: N, \% U* `) f( G
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#undef EDMA3_DEBUG
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/*#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)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)' |4 w6 y0 V- p$ r- q* | i
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )* o) J0 h& O- B% C* S5 k7 I* q
#define DMA_FN_IN
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#define DMA_FN_OUT7 t0 s- _) Y+ h3 [- Z" r
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20. O& [; D+ e: A1 g5 ^+ f
#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;5 `: a. F, U7 k" s
static volatile int irqraised2 = 0;' i' I) y0 y3 b& t' r5 \
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ O! y$ D) T/ J2 S5 N* |. V) g. J
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. N6 T" f' k6 ]' f: `
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ d" O! @6 ^7 s9 C1 x
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dma_addr_t dmaphyssrc1 = 0;1 E' J- z" D0 a2 s4 G3 j
dma_addr_t dmaphyssrc2 = 0;! [2 d3 Z2 R. k0 B& C' X
dma_addr_t dmaphysdest1 = 0;8 K! Y- T" O; V+ E
dma_addr_t dmaphysdest2 = 0;# o Q! B' `, S; r. i2 y3 ^1 f
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char *dmabufsrc1 = NULL;- ]6 z" z. e; P+ p7 ^
char *dmabufsrc2 = NULL;! X( v7 e- ]3 M0 u% r& r
char *dmabufdest1 = NULL;1 p" o ?0 r1 R0 I
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;$ j1 w0 p6 P0 V4 u3 S; t4 b
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);3 x0 K7 @9 m% p9 _- h
module_param(bcnt, int, S_IRUGO);2 y+ w4 ~; Q; o J
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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