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 m! C% t+ V+ h: }$ d7 w3 B# x
/*8 ~) C' R" z4 X1 W$ N- _2 ]
* edma_test.c: p" Q1 I) z! x6 T0 P- x, E4 Z2 u; {/ D3 I
*
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* brief EDMA3 Test Application$ l: }$ C, O' } p. B9 n
*
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* This file contains EDMA3 Test code.) b/ X% V9 {4 b
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE4 z' r/ D8 f& [# \
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/- p- X8 ^/ r! t
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* This program is free software; you can redistribute it and/or' K$ _+ Z& _' {
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.* E4 x2 @+ C; ?* M- x
*/ s: z( s; h% X' U' U: r3 C7 g+ i
* This program is distributed "as is" WITHOUT ANY WARRANTY of any( s1 x# J* ~9 \ C( A5 J& A
* kind, whether express or implied; without even the implied warranty( A% Q, Q+ g3 F/ e$ x$ H f* q2 [
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 n' q) W0 V; |) Y, N
* GNU General Public License for more details.' u) Z0 C' d1 k
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#include <linux/module.h>0 E$ _9 x Q. T! Q
#include <linux/init.h>
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#include <linux/errno.h>4 m& c- ?3 Y6 u( ?
#include <linux/types.h>
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#include <linux/interrupt.h>+ d+ O3 f I6 e. y% s& P% `& J# c
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>( o) I, Y9 o7 Y0 T
#include <linux/mm.h>
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#include <linux/dma-mapping.h>3 \* u' T4 } w5 A- F' k7 _+ E
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#include <mach/memory.h>& ~" m' ?+ P0 U& F# K8 P X
#include <mach/hardware.h>, I" [. d8 T0 \, {
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>+ z: C7 L0 q+ N7 g; u, P6 T% U
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#undef EDMA3_DEBUG; d/ y- m e; |/ K/ f a! J
/*#define EDMA3_DEBUG*// v, l* _) s/ F* Z4 G* p
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#ifdef EDMA3_DEBUG* j7 H; c; p9 O* |1 l/ `5 H
#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__): _/ J, U2 e: l9 c# P/ Q/ G
#else
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#define DMA_PRINTK( x... )# C0 e1 k- Q$ B, P1 g$ t4 ~" K
#define DMA_FN_IN; x+ P) M- R' ^5 f- a! t! T5 j: |% A
#define DMA_FN_OUT' ], A Q" B0 v6 o
#endif! Z& R' P1 x, v, d7 R) G+ f( a
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 34 a# Y& t0 A6 s+ e# p5 s# j- h
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 216 B# \9 B3 M0 @/ R
#define TCCHEN_SHIFT 22! `3 O* y! U+ v9 y6 ~
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;% D4 J+ j) x0 l) i! }- B E
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);1 t2 T2 {7 J, `% A* N u
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);4 f, D) s S |7 D4 y/ M) q& J) i
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dma_addr_t dmaphyssrc1 = 0;" G- ~3 y& A9 _2 q* p
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;- F: _6 }1 J2 d. [: c
dma_addr_t dmaphysdest2 = 0; O) ~" g4 s2 o1 D" U9 L/ ~
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char *dmabufsrc1 = NULL;- ?/ w b/ W6 N' |0 I
char *dmabufsrc2 = NULL;# |+ X7 g4 b: g2 I* |& O3 V
char *dmabufdest1 = NULL;2 L- u# ^& L& e' N
char *dmabufdest2 = NULL;7 [/ k" k" N! X# N
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;$ Y& U2 y# D! r/ r; y
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module_param(acnt, int, S_IRUGO);! k, `% b! u; `. ?6 z
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