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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/*6 Y u- I- X0 x: E
* edma_test.c
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*3 E( B- R6 s- l8 Z7 [+ E
* brief EDMA3 Test Application D8 N( e2 _2 {4 x9 V- K0 k" c
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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 BE5 [" |1 [% _. R6 q. V+ d, n
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.1 Q4 b& l* b# D1 _6 q ~2 \
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or. K, u4 J- W7 f; I8 n' P7 E
* 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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*
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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, Y" X7 Q6 f0 N# c8 _
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>3 \, I/ ^7 p5 e+ W4 b; m- F9 X
#include <linux/init.h>
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#include <linux/errno.h>5 M! i6 k- P: N1 z
#include <linux/types.h>! J# w* X7 B u+ o9 ~% q$ i
#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>2 U: |# [3 T5 e- f4 o
#include <linux/mm.h>7 s! d' s, }8 W9 c* c( C" @
#include <linux/dma-mapping.h>! D/ n" k6 A s0 Q
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#include <mach/memory.h>5 D: p: P- b8 b* b
#include <mach/hardware.h>! e# X$ K! A m$ l" q- B! F( n
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG- K, J# x4 |3 U+ I' ^6 }3 I& Y2 I4 }; @
#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__)& ~/ J1 y" [, B
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)9 @ R. X# p; R4 Y; n0 V7 E
#define STATIC_SHIFT 33 A3 Q' L; p. ]3 w$ K
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22' T7 D: K. H; o U# J) U9 [' q
#define ITCCHEN_SHIFT 23# l' ]6 R8 m3 t/ u2 w
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static volatile int irqraised1 = 0; L4 s( V6 t& N$ m+ J( o/ @, l- j
static volatile int irqraised2 = 0;3 D! K5 U9 v8 ?/ w* R( ]! M \
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 K" a8 S, D' p/ t E
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);- v7 {6 }0 l& O, E% E |3 S
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;2 E; y! j# c4 q& u
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;4 G0 F% p+ ~; q& ^: R* q
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char *dmabufsrc1 = NULL;. K, P' @1 N$ V5 p9 X5 D# i
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;$ @ [$ s2 B& _# j5 J
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;' h, q$ `0 M* n& y- G9 T1 B z- R
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module_param(acnt, int, S_IRUGO);- r+ M; K0 M* _
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