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
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/*5 G1 H) z: o' P3 i) \
* edma_test.c% M3 m( u, T S( h% N/ H' Z
*
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* brief EDMA3 Test Application) G7 ^+ G; Y) G1 L1 [0 Q
*
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* This file contains EDMA3 Test code.) a+ m( A, G: z% J' B8 w
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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.' w% i6 D2 c: r8 R1 @1 _5 @
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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 as4 F. X4 e& }# r6 g L% p6 j' f
* published by the Free Software Foundation version 2. h% z" g8 g" m" h
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any, X g8 h8 k2 K' f0 G$ O+ `
* 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." O% Q& f5 Z! B/ ?& v2 `" o
*/
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#include <linux/module.h>! q4 V8 N% G& z* N, l- D
#include <linux/init.h>9 B: X, X5 y9 a7 c8 n) {
#include <linux/errno.h>
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#include <linux/types.h>4 |' ]7 Q5 G( \4 V r
#include <linux/interrupt.h>- }; j. y- p/ P; \ G1 A. L
#include <asm/io.h>
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#include <linux/moduleparam.h>! V' T0 y* R/ E+ A
#include <linux/sysctl.h>% C; x& a: \* D( Y+ o
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>7 \1 `, M" T; @
#include <mach/irqs.h>% M [7 {) G) t! {, D8 B
#include <asm/hardware/edma.h>2 i7 D/ ~- A. x p$ U
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#undef EDMA3_DEBUG8 @/ x2 @. R. k9 ]* f1 ~
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG5 T+ n3 }- p( j( s, ]0 t/ n6 \6 C
#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__)% a% E- Z+ C0 {" x
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else+ D4 E$ Q% b6 h. o0 `
#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)
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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$ R5 ^) [! ]) m& d0 B. r% z
#define ITCCHEN_SHIFT 237 j4 D6 U+ m8 c$ \9 M) M2 G, Y& n" V
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static volatile int irqraised1 = 0;
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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);+ d& u$ {' J0 O5 ]
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 v% n2 e i x1 m7 F! W
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;
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dma_addr_t dmaphysdest1 = 0; `1 |6 c3 e: i! L& d: L+ o
dma_addr_t dmaphysdest2 = 0;1 N* R- V. v6 t$ m) G4 ^+ t& f- f2 H
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char *dmabufsrc1 = NULL;" V+ H: e& n# {. c
char *dmabufsrc2 = NULL;6 P% n2 W) s. }* d& V
char *dmabufdest1 = NULL;0 t \% F2 [ x. l5 a1 e
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;4 M2 t9 c+ _5 B( o( \
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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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