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# E1 d- n: l& |4 i9 Q2 ~% [% T. J+ e
/*% l8 J2 q9 F1 p1 |3 \2 f5 g
* edma_test.c; j; r5 M1 e+ z
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* brief EDMA3 Test Application9 o% `' q! L: P0 B# z% V
*
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* This file contains EDMA3 Test code.
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*
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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.3 h- ^* p! ?3 P; m9 Y) \
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 b4 C# b( |# l9 w b0 x( J
*
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* This program is free software; you can redistribute it and/or8 t, H6 P6 l8 S5 x) D/ j& b L0 h
* modify it under the terms of the GNU General Public License as( t* U7 ?# Q( ~* D! {5 q
* published by the Free Software Foundation version 2.; `: p3 Z+ F) K1 q6 Q/ B9 ~
*+ E3 G1 |, G' q- ~) n
* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ d# K L! q! F8 a
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 ]5 s& j2 d3 Y# }' D
* GNU General Public License for more details.
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#include <linux/module.h>. C: u6 W% _; w
#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>( D' M9 [; @ s* s
#include <asm/io.h>0 o/ v9 Y" M( }- C2 r- @1 \
#include <linux/moduleparam.h>0 C+ U0 h& N, ?' B. n( f# U
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>. L; c. D* F; Z! R) j; d
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#include <mach/memory.h>& [4 z. V6 A& ]! }: C: r
#include <mach/hardware.h>3 O! _" A/ i% x7 G3 e1 [
#include <mach/irqs.h>; s* S7 E0 Z& A3 C7 o" W
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG+ S8 Y$ i" Y. F8 Y Y2 _7 d, t
#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__)0 d. S1 a# a' @! @1 m+ E) F
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else# d0 w: V! U4 X5 [6 @" U1 H8 e8 p
#define DMA_PRINTK( x... )2 ~" S v9 B0 y/ L: c, f2 m
#define DMA_FN_IN8 S( \, j) G" l7 p+ x
#define DMA_FN_OUT, Y# I5 K( ^: m0 e# e
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% J* \& b. j, y* W& M W5 V
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20& ^/ X; S! x/ \1 l7 i
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22 \2 Q. z9 A0 H1 M+ {! ~0 m
#define ITCCHEN_SHIFT 23# d! x' x0 q+ R5 C$ B( e' |& y
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static volatile int irqraised1 = 0;1 o. @6 J; {3 A0 d2 G
static volatile int irqraised2 = 0;7 C! g1 B" H% Z C. }& y! m
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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;- Y1 H) a) X# L5 Y) @- M. g/ Q( c
dma_addr_t dmaphyssrc2 = 0;# ~1 w( s3 S+ i+ X$ u, F0 C; ~
dma_addr_t dmaphysdest1 = 0;9 u0 ~2 Y! K3 ~) Q- D. Q: ?
dma_addr_t dmaphysdest2 = 0;5 T5 d; C: B( }1 P4 V% _$ X
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char *dmabufsrc1 = NULL;/ G W$ D, `% Q: v: i
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;9 t* @4 T c, ]) c& j3 M' I' ?
static int bcnt = 8;6 Q3 p3 }9 V8 |" u1 s \7 j8 {* j
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