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% V4 O- r. m, k& W1 U8 E/ o
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* edma_test.c
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*
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* brief EDMA3 Test Application. R6 H% y' J- {9 v; K! m- u
*
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* This file contains EDMA3 Test code.6 M0 E9 L3 U3 `% C+ [1 @2 M9 a
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' M2 s/ C3 F4 k/ \/ r1 x7 a
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ d# {5 T. P0 F. c4 N0 {
* TO CHANGE.7 {0 K( Y9 b1 I8 o8 T
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& G, b5 P5 E3 f7 ]9 ~5 v
*
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* This program is free software; you can redistribute it and/or* G) Q4 c" @4 r9 i
* modify it under the terms of the GNU General Public License as+ U6 E1 m2 J1 y _/ y' d3 A
* published by the Free Software Foundation version 2.; G/ S. P2 w- w Z
*
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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 warranty9 {% t9 g4 k5 j4 q$ t& o3 C4 z1 r+ q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, C! i4 f. L: [$ K5 G. K% t/ Z
* GNU General Public License for more details.. _3 x: [, X/ s3 Y. |# x
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#include <linux/module.h>! L) D# ~4 K9 w5 D# [$ Y
#include <linux/init.h>
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#include <linux/errno.h> D9 ~" r) ^8 t% M; B4 N- Q! W
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>5 j) Z3 Z3 ]% k5 _% k- j k4 r
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>2 H) y" L3 R# I6 }7 b0 p
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h># k1 M8 v4 w8 _
#include <mach/irqs.h>$ R) `. m( j( o: Z
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/, Y- Z" x& H2 k; y
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#ifdef EDMA3_DEBUG2 t5 ?2 `: ?7 }; K& |( c
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) P8 V% g' e! a( t, R: t* A( b4 ^
#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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#else1 r+ L) U% ]- T. p- G K; g
#define DMA_PRINTK( x... )
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#define DMA_FN_IN5 }' k! L" ?3 o0 \
#define DMA_FN_OUT& r! B# W* T" l- G
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)/ V4 U/ j9 i0 o6 H9 O1 a+ j% K$ J. `
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 203 t& r* e: X) z+ k3 k/ t2 F
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22* q6 @0 o# n$ r/ P' V7 b! m
#define ITCCHEN_SHIFT 23) r% p7 n* W" a2 p
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static volatile int irqraised1 = 0;) S: p+ Y) |. d& ^4 Y
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);
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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);2 f9 f$ E2 g+ U; a- j# I. i
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dma_addr_t dmaphyssrc1 = 0;* Y; h+ x' h9 z% G+ O8 n
dma_addr_t dmaphyssrc2 = 0;( X" S( u9 M; ]( S. J
dma_addr_t dmaphysdest1 = 0;4 L' ?/ F3 D% g1 b7 J
dma_addr_t dmaphysdest2 = 0;! H9 I0 |6 l# A7 |9 F# W7 T4 d+ p+ l
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;( a% h4 l" |) K9 w1 O5 f. b
char *dmabufdest2 = NULL;1 \% d; A+ f; D/ g, ]
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;2 N* Y5 v r1 b$ [8 t
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module_param(acnt, int, S_IRUGO);1 `9 F a/ m9 Q! g1 K w4 Y3 A& @
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