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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/*
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* edma_test.c8 X# @' H8 ~) G1 C
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* brief EDMA3 Test Application( p& r x$ v# v. h$ E- z& G
*
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* This file contains EDMA3 Test code./ P1 [- y1 U$ v
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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.7 V3 L _5 M# l9 z1 a
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: U4 Z: p; A g- l2 r' D3 T( ~4 l9 ~
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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 as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any: x( @% u; a5 I" n
* 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., J2 M. q3 y( r4 y4 I- q
*/
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#include <linux/module.h>
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#include <linux/init.h>2 p3 B/ m g. i# y
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>3 x. C+ v ` c( q) h, I) d5 i
#include <asm/io.h>3 _" t! _$ t% z3 s% p8 }& ^2 d# Z
#include <linux/moduleparam.h>! \ X( L. |7 ?
#include <linux/sysctl.h>% m! C2 ?8 ~. a; Z6 Y5 X' {' ]
#include <linux/mm.h>) G; ?2 }2 n- e* U) l4 _* _ n5 t; N
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>5 I0 r+ Y# {$ P, Z
#include <mach/irqs.h>" P) U5 j% w; D+ o
#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
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): c: f9 X7 K1 H9 m. z& b! F, l
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)2 V5 H. n$ _0 E- C) g8 I
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ U& ^* y! I$ ], Y* S
#else2 Z3 J0 e; P- I* ^% } |
#define DMA_PRINTK( x... )! g. }/ i, D; \7 F! {% }4 z
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif3 L9 O7 O& D5 t; S4 B, u
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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' R7 w0 |5 }% }
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23/ P' ], u: z+ r# q3 m4 ^
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static volatile int irqraised1 = 0;2 y* C! i7 z5 |! v! x
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ |7 o- q# b8 X# a; i# ~
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); o' e+ p, K9 A- d5 y$ \/ ?
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;4 q; I% D% v& r* r, P0 w }" V
dma_addr_t dmaphysdest1 = 0;) k T( Z% S1 U5 p' w. x
dma_addr_t dmaphysdest2 = 0;4 Q- b' ^0 d. {
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char *dmabufsrc1 = NULL;5 k8 G' P% R: L: O
char *dmabufsrc2 = NULL;( a! p" g2 m0 F$ t/ P$ a- a% w. C
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;2 }) i7 M" r$ C8 i) v. n; D4 N+ f
static int bcnt = 8;
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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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