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; S5 q" k( X% ]
/*6 P2 R7 u# Z. l
* edma_test.c
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*8 p/ e, e8 S2 Q% i u8 _' s
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.% \% K* C2 Z0 o$ W1 W/ O. Y# J" Q
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, [0 v5 b/ X S" ^! f
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) D4 s6 J4 U$ ^
* TO CHANGE.# b& ?, d* V* ^0 ^" k
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 S$ j' x% B: F* A6 \+ W" C
*
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* This program is free software; you can redistribute it and/or9 }/ x% h$ t1 _' M- y
* modify it under the terms of the GNU General Public License as& C1 _. t. i( p) L7 D
* published by the Free Software Foundation version 2.7 d, q1 Q; N! @7 r0 d/ V8 J
*. k9 z) q' }( f9 |5 k% F
* This program is distributed "as is" WITHOUT ANY WARRANTY of any) o) X$ W4 z" f) X4 P
* kind, whether express or implied; without even the implied warranty8 T; _4 y! D0 ^! @4 f, ]
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! E! V$ P; K6 f9 q& B
* GNU General Public License for more details.: [3 r+ I0 ]7 o: x+ N2 G' I+ L8 l
*/
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#include <linux/module.h>; {: n! [ h/ r; K
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>4 n5 S0 x0 r# P; w
#include <asm/io.h>
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#include <linux/moduleparam.h>, v+ L% g7 T$ d8 y. Y3 k& m. J
#include <linux/sysctl.h>( K2 L- g/ q+ N5 t+ C- x
#include <linux/mm.h>9 L% K/ G( H l* |; |8 N5 b N$ E
#include <linux/dma-mapping.h>
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#include <mach/memory.h>% I. X% W5 Q' R" h' a
#include <mach/hardware.h>
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#include <mach/irqs.h>; V! M! c3 N' w2 B6 L
#include <asm/hardware/edma.h>/ s6 @( p4 X) s. ~/ K2 |# p) D
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#undef EDMA3_DEBUG' N5 G: V/ ?8 R* B( k U! Z
/*#define EDMA3_DEBUG*/, `& g: b$ S1 a1 k7 ]! @
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#ifdef EDMA3_DEBUG: _- n$ x E8 n: l
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 A3 q9 @) n( y0 u w( T1 H
#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__). A: w+ \. X" r& z( P6 }- P( J# k
#else) {0 c2 X8 }' \2 h% f
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768) p1 C% s' O0 X" t, k
#define STATIC_SHIFT 3" O! O. H" r) e' X
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21* p2 u1 N; E1 r6 m4 h# X
#define TCCHEN_SHIFT 222 n, Q) Y9 L% E9 H6 k' q' Y
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;, @) @3 d# E; W! _8 J. d9 @+ \
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- J* l/ B7 ?/ U3 j) Z) U$ |
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' y2 Q3 C( S2 d5 [
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;. k& b% ^6 P$ i4 F* s: M3 \5 A9 |
dma_addr_t dmaphyssrc2 = 0;0 ^ f6 C- J" u. C, k
dma_addr_t dmaphysdest1 = 0;- B# A: S1 O/ M9 ~, J7 e
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;$ ?" Q3 I2 B6 b# t) x6 l: |. g
char *dmabufdest1 = NULL;1 B; X, o2 M, |1 o7 u$ o
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8; Y& R8 f& w l. F2 i" O; S: U
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);8 q: {% p6 J3 |4 G- L
module_param(bcnt, int, S_IRUGO);5 q& K. |; ]0 e) U- M% H! ~ H
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