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.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE7 t R \1 q B! j2 T
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) c. {$ A5 k+ o* F( d
* TO CHANGE.: E9 D W$ E" O( t/ _# s
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or1 e6 R: U1 R* S1 U7 |" f6 s
* modify it under the terms of the GNU General Public License as. M1 Z8 t& h3 @3 H( L* G7 r0 L
* published by the Free Software Foundation version 2.3 R, B5 t9 L/ c* N1 {
*6 J1 f( k# C5 m. z
* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 @- ?2 y* C* N# W$ h
* kind, whether express or implied; without even the implied warranty* q( b; P) Q. p
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the4 c. P* K8 B* u2 V1 n8 q- w
* GNU General Public License for more details. |% y* f [$ M7 g# ~7 R7 w* m2 [2 [
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#include <linux/module.h>
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#include <linux/init.h>1 W8 ~5 q2 d7 p! v
#include <linux/errno.h>
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#include <linux/types.h>: m7 A: @" O* F" ?! j
#include <linux/interrupt.h>( y& z9 a3 |, T1 e
#include <asm/io.h>, I( C+ \, V* U# T# n& M; R Y
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>, ?) _: G0 W' ?; e3 Y, x1 }
#include <mach/hardware.h>) d* y" t# P. g- ]; i$ i/ P
#include <mach/irqs.h>
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#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)# I0 _& z% a% Z3 X5 `
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ O( Q9 Q% _1 P; A8 c
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... ); C4 l% n" ]) x5 v" k( b& w9 u1 [
#define DMA_FN_IN( h5 f5 r& i* T0 I2 k& A/ b
#define DMA_FN_OUT2 v; ?1 T3 I; r+ G& k. c
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). G H$ u0 q3 m# C' D: t C
#define STATIC_SHIFT 35 v3 o( G, G) n8 D
#define TCINTEN_SHIFT 20* _) O+ ? k5 ?. Q6 T( ~0 `: p
#define ITCINTEN_SHIFT 21' L! u l8 w- V6 P1 V
#define TCCHEN_SHIFT 22; x9 d7 r3 g! o4 }% s
#define ITCCHEN_SHIFT 23) `2 o d) [7 J$ W2 i, u' Z- f$ o
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;: R' `7 |/ O6 Q
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" S7 T1 g0 d8 t B% z3 i
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ S7 \9 T7 I/ Z) G4 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;' h: u. F z N( \0 N' x
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;# `5 g: t! E: Y( J g
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;& u4 f, V# E0 }, T' a" p
char *dmabufdest2 = NULL;# t, T, ~! d1 h, |8 G! ?' E4 ~, p
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static int acnt = 512;( K# x2 l$ Z7 j2 _
static int bcnt = 8;
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static int ccnt = 8;8 t! N! M- M! S& g/ }2 }7 P
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module_param(acnt, int, S_IRUGO);4 C1 K# F7 A6 D* T# d0 M: F
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