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' ?! p' ^, t s& d% T# G
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* edma_test.c2 F0 N0 v; ]$ N( q) q6 I l
*
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* brief EDMA3 Test Application! Q7 K' {: l- }3 j$ x% X. B
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* This file contains EDMA3 Test code.- L( B7 J4 ]5 _" d/ q* G) ?# `! [ y
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ A1 y+ @1 t* Y' W3 Z
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.+ @; \6 ~1 x. o- E% @" J
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* h+ m8 T+ N8 a) @( y
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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% k0 S5 d8 P+ V
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any) i1 p8 M, @+ j& n' ?, _
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: G0 Z9 S# z- [; b
* GNU General Public License for more details./ n1 m9 V( a B, C. m) C6 {
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#include <linux/module.h>
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#include <linux/init.h>6 |8 A( A, P* E0 p1 d% h1 J `
#include <linux/errno.h>
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#include <linux/types.h>% `: Q; l: S" G0 i. @
#include <linux/interrupt.h>* Z% e6 r1 d# u; S. b
#include <asm/io.h>
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#include <linux/moduleparam.h> ?" l1 f% n" n% B" [7 K
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>$ E' l- s. d, W- w u* G
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#include <mach/memory.h>1 b M4 e2 f6 |2 S1 N
#include <mach/hardware.h>
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#include <mach/irqs.h>5 J4 ^9 E6 Z- ]/ J
#include <asm/hardware/edma.h>( W% f o5 F7 K9 P$ G F" @3 K6 ^
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*// V/ ]0 [8 F- N$ Q+ f
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#ifdef EDMA3_DEBUG' ~- x1 c# B- {
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- g/ I/ A F0 O" G- e" N2 u$ ~
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) L( Q/ `3 t3 N1 m
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). R; p+ Q$ W7 b9 G: X! Y, I! j1 a
#else# o7 H; J7 ]9 r5 }! S3 ~& E
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT( b# ^2 z' G9 ]6 c/ ^! p9 R9 _
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)9 d, ?7 V! K1 V1 Y# D
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 206 b* J: k* B% _3 p# r! l, u
#define ITCINTEN_SHIFT 218 ^, d7 B' a2 ^' k; _1 T7 @
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23% Z4 [! W& q8 f
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static volatile int irqraised1 = 0;) s' B8 Q' O5 F1 p" K8 c) m
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);. s0 }+ U7 z8 j3 y
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;$ ~5 _3 @1 |8 [$ }
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;5 X6 {6 y* _# j, j4 R5 y7 w
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static int acnt = 512;
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动