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 application0 N+ n: f# P; d1 N" _/ c$ v
/*
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* edma_test.c
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*0 u5 `6 F* K# y2 F, M0 S
* brief EDMA3 Test Application; Z J# v4 @2 q/ H4 _3 V. E
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* This file contains EDMA3 Test code.+ r) r7 v2 ?; e5 G5 Y Z7 }2 ]
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ O% J5 {% y2 |- q4 H9 r6 {
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" o% p( Y7 H) s
*
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* This program is free software; you can redistribute it and/or3 g+ m1 V2 H0 E: j! P& u4 B0 _
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.! ~) Q0 J$ I* r G; ^& N: F
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ T0 p0 V4 @; c2 ?4 Q1 k2 \
* 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." h" G5 Q- o7 b0 V0 D0 V
*/; I( s3 B; f2 i# t% _2 R: W+ r- P' {
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#include <linux/module.h>
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#include <linux/init.h>9 X) o) N: \' T, T1 y
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>9 N* \8 O- O( L7 m9 p8 q. p% p9 t
#include <asm/io.h>: _ c( u4 G i+ v) \% i) i
#include <linux/moduleparam.h>- v8 k2 H' i$ i4 C! m+ }+ [; \
#include <linux/sysctl.h>% q. ?* s- S {* ^
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>! ?$ g* t1 p; V
#include <mach/hardware.h>1 b" L" G& Q" a/ M% I" ~4 {1 S
#include <mach/irqs.h>( M' z* D/ M; H& p5 j# b
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG: l) P6 T( w) Y
/*#define EDMA3_DEBUG*/) [/ @/ r5 z1 ~$ N( H! W
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 v8 [2 q, \. ?3 y
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ E7 W& U" r) [5 h
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)# B9 @, o% C! h: f4 b4 G
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT, |: [$ U0 i$ I9 @
#endif% \) N/ E3 q/ G5 B y
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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# G5 ]8 P/ h& ] N! y6 Q/ ?! }
#define TCCHEN_SHIFT 22: s6 c4 }8 A$ y0 V3 u
#define ITCCHEN_SHIFT 23 B/ [8 J) O$ u9 M( Q6 E7 z
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static volatile int irqraised1 = 0;- D9 y/ q2 d! O. 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);/ V% N- h) e; o3 M/ |
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, s; l; a# i' _- I6 D
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0; B. G H# a: Q: f2 l. z# H9 B
dma_addr_t dmaphysdest1 = 0;3 Y0 o9 P& a- f. y, G
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;% [0 ]$ B/ `6 \ B( Q+ a7 y
char *dmabufsrc2 = NULL;. ^2 O s, ~, T7 h* h9 ^
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;4 r7 u8 n* ^ ?& U* f
static int bcnt = 8;5 M/ q9 ~0 A* \. L% ?+ a
static int ccnt = 8;1 e& T9 a3 _, J- L |- U9 S
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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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