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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*9 w, g0 z0 I* j, D4 \
* brief EDMA3 Test Application9 Z! c5 c! F& P: g! q) s
*
! \# a6 x& D( Q2 Q% K
* This file contains EDMA3 Test code.8 G3 K. i O2 G# h2 V+ s7 X% G
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE E* j% a$ S3 Y+ L6 S
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.3 O) v: N# i& s9 y E3 r
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) {* y6 W; {( ~/ a! t) C
*
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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 any7 R) E# G; D8 W" g/ w
* kind, whether express or implied; without even the implied warranty: x9 _1 H% n1 g, Y' A+ D# X9 |+ C0 i
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the0 n5 F2 a/ \9 a- H! W! X5 a
* GNU General Public License for more details.! J2 n! Q6 @; e7 T+ O. T" g2 q
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>0 i- O, P; a) L- O) ^; o5 M+ X- V6 M
#include <linux/interrupt.h>% r4 ]: c* ]9 t& Y( }
#include <asm/io.h>0 d) \+ Y& P9 z" E9 U7 j7 e
#include <linux/moduleparam.h>0 b1 g. Y( m- Z; q( ]; q& g' I
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>6 X. q1 D2 `- Z/ X7 x
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#include <mach/memory.h>- y2 |3 R2 q! N! p/ z' P& k, R9 N
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG! z+ z3 W" m' P! x7 a
/*#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); M1 V. b; c0 b6 E4 V I
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)' C5 M4 W8 Z9 b0 F& T2 N
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__); s0 H3 i8 U& e9 x+ J% ^ K$ }: r- i
#else
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#define DMA_PRINTK( x... )$ D. I+ B4 ?# q6 o& h
#define DMA_FN_IN; c( `1 u& v. C9 K: t2 n( y
#define DMA_FN_OUT; `) k( g$ q1 D% n1 \- s3 P
#endif+ l, Q7 R: D2 ~: n5 R1 w$ `
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)$ G0 Z4 B- T8 K; H
#define STATIC_SHIFT 3: ?9 m+ }& k8 V7 n$ n
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21# Q" q1 l0 h& h1 u( [
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;* Y' J/ t0 t& D+ U# o# C( R! J
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! {* E; W6 @3 U/ L1 q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( R; R3 L2 B# r0 O
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, l1 ^- {8 E& P6 m6 h, F- p
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dma_addr_t dmaphyssrc1 = 0;9 [# v X- L6 W! G1 Y
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;* @+ G w* X( N3 I
dma_addr_t dmaphysdest2 = 0;: a+ t1 m, d3 \; _# s# W6 }& c- b
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char *dmabufsrc1 = NULL;% a- N$ H/ w8 H9 l# `
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;; D6 v$ V& W& q) \) O2 m
char *dmabufdest2 = NULL;' D6 j; O8 ` ?6 J- Y9 T! C7 O) O8 G
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;! j, `: g5 k4 h
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module_param(acnt, int, S_IRUGO);
module_param(bcnt, int, S_IRUGO);; i, v5 \$ Z9 \" q, j8 A2 t5 j
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