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 application5 G: h2 e" F: D- c. R
/*
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* edma_test.c+ o M& `0 V5 K+ x
*6 I. J# s5 G) \6 h' D% m: E
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.) V( N7 ?- i: ?& y' ]7 @- q8 G
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE4 h/ z/ Z/ h% Z1 B% e
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT$ R1 @8 Z* y* |0 q
* TO CHANGE.# n% n1 b) M$ I' k V! Q7 X
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 K* i6 t M" ~! n" z
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* This program is free software; you can redistribute it and/or+ Z; {6 _- d8 E
* 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( c2 X8 a0 u) L* P4 T
* kind, whether express or implied; without even the implied warranty! s7 O; T0 ?, A
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 C0 Y( u) M! Z4 t0 ~ S7 k
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>; H4 {) m' l; f+ l1 g
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>+ H. n$ L" }# `2 r
#include <linux/dma-mapping.h>2 f! W, N# o, @
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#include <mach/memory.h>
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#include <mach/hardware.h>1 l9 H; A' \. g' h
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 C3 G! ^: C( H2 |0 r
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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)4 ?: j! l; B' B0 e" o# L1 `
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) ^5 r& a1 k) j' Y7 _
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN; F; k! c9 K- J; }' x' }
#define DMA_FN_OUT `/ |2 i3 k9 K$ ]4 [2 f
#endif$ B2 n/ [$ x; K/ J# F+ d& O
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), i9 ]4 \$ s% V, H$ [
#define STATIC_SHIFT 35 |( W" u- r' P% q+ ~1 h6 t2 G; ]
#define TCINTEN_SHIFT 207 k7 @+ g9 G3 T2 U! g6 J7 Q
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22/ ^( J: B4 |/ D9 }: w
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;# \" j& ?# m) N
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);! `- L3 G& ~' C( z$ U7 \, y
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;' o) r; N) e0 M* R# Q
dma_addr_t dmaphyssrc2 = 0;! f! Z3 h4 R# d
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;0 x) p% B/ W$ C; y
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char *dmabufsrc1 = NULL; z: M' h$ E* Z8 I3 R& ?6 v8 Q
char *dmabufsrc2 = NULL;" _- g" K0 ]$ i; H1 v1 ]
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;1 O) ~6 K0 B4 p0 k/ t9 y' @ z
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static int acnt = 512;; R7 J2 `1 i. x! x
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);, @, w5 d/ q( x. Y. d
module_param(bcnt, int, S_IRUGO);% y: Y) L& ?1 a. u) j) k h; q
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