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: H" N- O8 |2 E, b
/*
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* edma_test.c8 y5 ]$ @$ C# F( E9 f
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code./ M' S$ }2 F* C0 v! y9 Y. K- b
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 @/ R2 ?# o8 U4 y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' m t1 C0 e; ? A0 X" a
* TO CHANGE.- g+ ` J+ T2 o+ b! f; r% L
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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/or0 L3 P& z) x6 G q1 H1 z
* modify it under the terms of the GNU General Public License as) A" b) r0 n9 S7 b
* published by the Free Software Foundation version 2.
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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# T, j' ]- b1 s. ~3 m: v5 Z
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>6 `& w, ^7 e" \8 x
#include <linux/init.h>% Z5 P0 D9 [$ g5 Z& h
#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>! H; Y4 Y8 `% X7 N
#include <linux/sysctl.h>4 h% E% C, B% E! ?& m
#include <linux/mm.h>) b. A6 q* p0 T- l5 F1 m
#include <linux/dma-mapping.h>8 m- b. X7 [1 h l/ F# p$ {: o
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#include <mach/memory.h>
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#include <mach/hardware.h>. O. }/ ~8 z7 U8 H9 a3 c
#include <mach/irqs.h>9 `9 X4 k* m' z- i) c+ _! P3 F
#include <asm/hardware/edma.h>
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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)
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#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# _: ?1 }9 V+ P# u; Y7 D# ^) ~
#define DMA_PRINTK( x... )) P; F3 @$ i9 F* d7 t$ A
#define DMA_FN_IN
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#define DMA_FN_OUT7 [: O C$ e' A0 z2 G4 _( Z. F( R
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* G" b- Y' ], H5 n2 \# b' C
#define STATIC_SHIFT 3( g3 y* K9 U' u6 e* \
#define TCINTEN_SHIFT 20% v) a* E! K3 W2 }2 R+ j, ^
#define ITCINTEN_SHIFT 215 W2 U; ^" N6 H5 H# @3 U) {8 z
#define TCCHEN_SHIFT 22/ N: k7 K7 k& I6 p6 y1 |
#define ITCCHEN_SHIFT 236 f( l, h' ]& W' t' h" L7 x
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;: O5 i. u9 P( {2 Y! f" v
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# q6 r, o' G4 g- ~8 [7 K
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);; i' ^2 h: H- s! `( r) F2 E
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
dma_addr_t dmaphysdest1 = 0;& U z# P, K' N
dma_addr_t dmaphysdest2 = 0;; \' V g M: S1 ^- K7 P) G
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char *dmabufsrc1 = NULL;
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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;2 r, R( r0 S0 ^
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);0 Y7 U+ c* |" C# Q
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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