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 application6 G, F" @0 @$ k
/*+ n! {; _7 c% K4 b" N
* edma_test.c
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*) q1 y) \0 A2 Z1 y" f
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.* P8 k* w4 C) E
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE0 {9 L% d# `. P- |+ ]& G
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.8 Q$ Z, p$ M$ h6 H, k, n
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 r {, }# z# C
*" S: s$ D, g0 V: t% w1 A1 e
* This program is free software; you can redistribute it and/or' h$ s# ~2 Q2 }" G
* 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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*( `8 ?' i0 l% G1 F
* This program is distributed "as is" WITHOUT ANY WARRANTY of any" d" J5 K5 y) S
* kind, whether express or implied; without even the implied warranty% w, M: q/ D$ G% J$ U4 f# O9 N b Z
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.6 N2 S9 O: b* z% o
*/
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#include <linux/module.h># w8 q) D; H! U/ [' c- } K
#include <linux/init.h>, _' |4 d9 _ y) G# F& U9 f: v
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>" B! P8 m6 ~$ w: u, j; _+ T) q$ R( B
#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>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>( j$ @# U/ Z: T2 p+ h2 S8 M
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>8 m6 u: [. E* |( H. z% G/ Y9 i
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#undef EDMA3_DEBUG: O1 d" ^& P! u
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG! E: W, Y% S- n8 V B5 d G
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 ^& Y" y: f+ F+ Z) a7 T9 Y2 M U
#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__)
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#else
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#define DMA_PRINTK( x... )8 n( F W. m. c
#define DMA_FN_IN! s$ A( m! f7 ?8 P, Q- l
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)5 `3 G4 A! M+ ?' V) N! v
#define STATIC_SHIFT 31 ?2 [0 `* U' ]! |
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21) p1 l. }- p3 F
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23& `3 q) j: |- B2 u- A! R
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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);
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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);; r9 Q6 x) w6 L7 X9 o8 P
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dma_addr_t dmaphyssrc1 = 0;6 a8 b3 J1 ?3 ], M6 i
dma_addr_t dmaphyssrc2 = 0;& h+ m* x* n3 q/ B
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;0 O( I( ?( D/ |' p2 a- B! R0 |* t
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char *dmabufsrc1 = NULL;. T9 f8 [4 r, ]- d
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;. b4 q5 N: W9 `
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module_param(acnt, int, S_IRUGO);$ B/ |5 z' _, I3 W8 v7 s5 ~
module_param(bcnt, int, S_IRUGO);& R: ?& J( D# @+ V- b9 x
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