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.c6 [1 O6 y; t) W! t! b
*
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* brief EDMA3 Test Application6 G) L) _/ i( G7 D
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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 BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.& P- G. p, k6 i$ B( a" w1 {
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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/or
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* modify it under the terms of the GNU General Public License as: X F" W$ S: A' ?$ \$ h* a7 E- I
* 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. A$ @& R6 B, o+ J
* kind, whether express or implied; without even the implied warranty0 ^6 U9 K8 t4 Y, o, o7 P/ G5 a: F" k
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( q$ r, s2 b1 m: {) ~; G
* GNU General Public License for more details.
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*/
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#include <linux/module.h>. a' P8 F {' V* E: p( k( ^3 K
#include <linux/init.h>7 }7 S1 o& B9 U5 s8 Z
#include <linux/errno.h>" ?, x, `4 @( o1 Y
#include <linux/types.h>3 X2 r* M8 z# W6 q$ ^, a
#include <linux/interrupt.h>
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#include <asm/io.h>9 L6 a! x, }9 L# y+ Q5 S0 m0 T
#include <linux/moduleparam.h># |! Q: E! A6 \6 f$ F% g' U
#include <linux/sysctl.h>3 L6 P& ^3 \: c. A" Z4 |
#include <linux/mm.h>
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#include <linux/dma-mapping.h>+ e' H" h: U6 u* [" c; \, c
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#include <mach/memory.h>! @5 c; d8 ~0 x, i
#include <mach/hardware.h>$ k& N3 t# S+ }' k8 `9 d3 d
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG% u5 [0 b* [/ O/ S7 ]/ d- v
/*#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)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)7 G" j# y. N, s- u
#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_IN9 a2 S, G' J* T' N6 M# ^( {
#define DMA_FN_OUT
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#endif- V1 q5 C: Y# T1 U- Q! L. [
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% A% x% _6 p0 ?6 g2 A3 D
#define STATIC_SHIFT 34 {. S1 g( n# A9 g. _2 J, M
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 215 `* u8 c* ]3 _) g
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 236 z( r% o( L8 ]- i: [" M
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;4 h/ L' {* ^0 H; Z' j* f# T: X
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 a) c6 I4 @2 [$ a
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);& A/ l1 x, s# ]% c! }5 j8 | F
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;: P5 o" \: t3 e9 K& Y" ~* b) @( N
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;/ u) A+ U: V, I) x
char *dmabufsrc2 = NULL;- J0 y+ |( w, H6 X6 k" Z
char *dmabufdest1 = NULL;+ q. z% Y: _7 {( C
char *dmabufdest2 = NULL;' v1 \9 O& k" b; B3 \
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static int acnt = 512;+ j5 J U" R' P5 X
static int bcnt = 8;( o) O6 A, l; v6 k0 I8 E
static int ccnt = 8;$ ~0 q) b) q- g( w' k* `* e
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module_param(acnt, int, S_IRUGO);0 j3 V1 g) J9 |/ ^" i; M
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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