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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/* E! d( j6 C7 r7 B' F7 W
* 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.
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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.4 T" `# H; |. g9 `9 s
*
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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/or1 s) n! i( y! p; P
* modify it under the terms of the GNU General Public License as* G6 m& V9 G- D# k* c2 y- d
* published by the Free Software Foundation version 2.( a% g4 B) B. l3 I" l# [
*
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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
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>9 U, `" k6 k( B3 Z+ m+ b9 Z6 C
#include <linux/errno.h># H& T3 {- }0 i
#include <linux/types.h>3 c4 ^) K1 U5 r& L$ f, J
#include <linux/interrupt.h>3 g' |. `& a1 C r1 @
#include <asm/io.h>" U& o% Q( ?3 m( I5 Y
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>! d. |1 T) g+ H2 E: H# b8 H
#include <linux/mm.h>
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#include <linux/dma-mapping.h> M$ B2 W8 \' [2 o3 P7 t
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#include <mach/memory.h>/ ~* g8 @9 z8 q0 _ m5 p8 T' T
#include <mach/hardware.h>; D+ `* L6 j7 a8 w9 {3 o
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>' I+ n. Z3 D3 [# ?% l
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#undef EDMA3_DEBUG, b, q. V* M- L7 X8 L# t
/*#define EDMA3_DEBUG*/& h8 b* J$ u' r. ^$ q- M% O* ^
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#ifdef EDMA3_DEBUG+ w D; R' z- U, C% j
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* ?1 D) z2 ~5 m8 h1 x4 }3 Y# r
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)( x' j6 W& E8 r( X/ R- m4 b1 Y
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else; I) c6 a/ W2 _; B
#define DMA_PRINTK( x... )# H8 N s9 M6 |3 L l
#define DMA_FN_IN& I `& m! z# l/ ^
#define DMA_FN_OUT: y, J2 r! J5 [, u
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)8 ]5 |/ j: K0 ?: w6 A
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#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;
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static volatile int irqraised2 = 0;3 z1 e+ L6 s9 G- p# J( T
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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);
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dma_addr_t dmaphyssrc1 = 0;; R- v" A) ]) x. n( T
dma_addr_t dmaphyssrc2 = 0;; F; Z* l: I4 u+ h/ a
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;: a3 n% R$ z% N9 p5 H4 f. _" W
char *dmabufsrc2 = NULL;( L# {; }4 J$ |# U, _* m
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;0 k) w$ ~- b- P1 n- u
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static int acnt = 512;7 z- y8 M7 `0 w* Z6 O# F7 g; q, o
static int bcnt = 8;0 b r0 M/ E% ?7 [' u8 L5 d" }
static int ccnt = 8;) ? S& P' ^0 }9 p$ ]! _
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module_param(acnt, int, S_IRUGO);& s3 i" _6 h1 [: q6 X
module_param(bcnt, int, S_IRUGO);2 D9 ] y% n. k
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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