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# f: Z; S. q/ {8 d
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* edma_test.c
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* brief EDMA3 Test Application3 E& ^6 c0 }+ A; E' T
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* This file contains EDMA3 Test code.1 c+ h, B0 R% o; k S
*
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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.9 a* L2 M" q7 P: ?
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* f1 X' i6 @' R, X% C2 M
*
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* This program is free software; you can redistribute it and/or: H( v% K* Q- \- i5 _. \6 T" h" z
* modify it under the terms of the GNU General Public License as9 G- m: m% J9 E/ W2 j
* published by the Free Software Foundation version 2.) G6 ~* y2 L7 O$ ]5 x' S& ?
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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.5 Q& R+ b- ~" b6 [2 [$ o3 _
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#include <linux/module.h>( i1 X4 q' G- D
#include <linux/init.h>8 S- L& F; H% F# B, {/ k1 }
#include <linux/errno.h>6 n" J3 e6 }- n/ K2 _8 u1 a/ I4 |
#include <linux/types.h>, S* q/ @) }! s- i6 o& L
#include <linux/interrupt.h> h; j, _, q* R8 ?# Q
#include <asm/io.h>* {* j$ Q2 S, W- F" D% F" c6 q
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>. P `5 c4 h# s6 b$ [" F
#include <linux/mm.h>8 {4 b1 y2 ]) y4 a: t# Z
#include <linux/dma-mapping.h>
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#include <mach/memory.h>3 f5 k) _! g+ }3 i3 O/ S9 i. o% n
#include <mach/hardware.h>7 M) N2 S9 |# m* J3 p) i; N: }! s. Z
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>2 _! o3 s5 {3 H# {9 {
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG8 w$ d9 O$ P } S F, P6 G
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% Q+ f2 @0 e( Y' j' g
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)8 W3 K+ h5 A6 ^" f1 b5 ?3 }
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ G, a2 `( c* ~" f
#else
#define DMA_PRINTK( x... )$ I$ i1 [1 {: I' R1 f( U. N
#define DMA_FN_IN
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#define DMA_FN_OUT8 T! q, z& v* p- |8 W! J5 t2 `. P
#endif. J7 s/ j2 X( d5 j1 z$ m6 O
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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
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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;$ y6 } o! @4 N
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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 B, O, ^2 u/ T4 @3 B3 q1 W3 g
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dma_addr_t dmaphyssrc1 = 0;8 Q* h' J% }2 {' W- l
dma_addr_t dmaphyssrc2 = 0;6 i/ n( f/ A2 C. c% u5 S1 g
dma_addr_t dmaphysdest1 = 0;& r5 B! d6 j: D0 _5 p& {: H$ @
dma_addr_t dmaphysdest2 = 0;# a# Z ~7 k6 w, @3 U
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char *dmabufsrc1 = NULL; s; m9 b& T8 I& O _3 q* G
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;! O% X! c7 N, J: f# C5 |* u. m* `6 D7 u
char *dmabufdest2 = NULL;1 L! |" S( ?3 y" g" ?; `
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static int acnt = 512;( V) Y8 l9 D. d0 p% Y. G% h; [2 z
static int bcnt = 8; _$ |% N( ?+ t/ r
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);2 C$ |" k$ _/ U: U
module_param(bcnt, int, S_IRUGO);( [+ b9 {& U/ H. ]' 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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动