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 l7 d% T" f, ]4 O) L6 |8 S+ ^
/*/ b0 A+ s8 y) I8 x9 _
* edma_test.c
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*$ |1 h! ]5 V% m
* brief EDMA3 Test Application
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*- z$ F4 X# `1 ^3 i
* This file contains EDMA3 Test code.1 {) L9 Q9 c+ {
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ u( Q5 E9 I) a2 ] N- T" E
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" ?) b% ~* F( g/ f8 o, N
* TO CHANGE.0 a* m, J: m$ i: O) v
*+ O1 s$ p* g% ^) ^1 H
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 h6 r" z: Q* C6 e; _7 I
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* This program is free software; you can redistribute it and/or- h' O- E9 ~' d7 F! l. t+ T
* modify it under the terms of the GNU General Public License as( w$ E+ n. Q3 Z N( U
* 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
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* kind, whether express or implied; without even the implied warranty/ B+ ?2 Y8 b& u8 _$ \8 R
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) f+ @. T, m5 H0 x$ d
* 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> D4 t; @8 I8 E3 N* g. }: Q
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>! e3 N6 b* k/ ^- M7 a
#include <asm/io.h>
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#include <linux/moduleparam.h>; Z) o; Y0 i) [" b7 ]1 V+ H
#include <linux/sysctl.h>: G. V: @2 v% G5 i+ O& d1 ~
#include <linux/mm.h>8 M. C0 A( T5 Q
#include <linux/dma-mapping.h>6 C# ~9 x1 k. v' k
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#include <mach/memory.h>% w8 x, ~$ X; G, e2 y c: a
#include <mach/hardware.h>
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#include <mach/irqs.h>1 N& D# X9 p1 Y! `6 b& B
#include <asm/hardware/edma.h>$ t2 `% S8 ~, B+ z
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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). I U) b9 r9 [5 ` n4 P! n
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)/ x$ K( `( z; Y7 j- e
#else4 z7 m/ h! a" F9 R& [( `
#define DMA_PRINTK( x... ) k: w/ X" c- w3 X2 P: J- I) t% S5 n+ y
#define DMA_FN_IN1 V. o" ]; C$ D/ }3 s# v5 B, S: l
#define DMA_FN_OUT8 n* j! L) F- @9 u7 o$ Z _
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3: s" G( S+ R$ O& ? u7 n
#define TCINTEN_SHIFT 208 Q/ Z, H6 q5 u4 R: J! @3 R3 X; d
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22- b5 d) J9 O8 ^$ Z5 t' r5 m
#define ITCCHEN_SHIFT 235 Q7 }+ w) D: p7 N' F, H+ v
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static volatile int irqraised1 = 0;
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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);- }' A. M: S+ Q& I* V- g
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);( `$ _& X9 C) Z4 v6 W
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;# Y- B# c$ | q" D' o
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;0 B% @5 a: R1 W$ Q9 x% o5 O3 B
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char *dmabufsrc1 = NULL;( M7 e% a1 F) v' o
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;# S Q9 @# ~2 a6 R
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static int acnt = 512;- U/ [- I2 a: L7 G. E1 e
static int bcnt = 8;; X8 d; h/ C \: F! k" T& g
static int ccnt = 8;! T; g6 l; |, O e r2 w4 @+ ~
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module_param(acnt, int, S_IRUGO);2 v" C+ ]) X! Q
module_param(bcnt, int, S_IRUGO);* i% H1 \! c6 }! e T/ f7 C
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