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 application2 M3 x4 b8 V8 A" q
/*4 `$ r9 D. [8 W* w# w6 a, M6 t
* edma_test.c
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* brief EDMA3 Test Application- m& Z- R; v0 F9 X
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE0 {( k9 H; Y# t. ~) u
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 r) ?9 E; O: J9 l6 E3 ?7 E8 b
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; U2 Q1 h& S( U" ?. [: U
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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$ j& U( s7 e8 f" _
* published by the Free Software Foundation version 2." c8 }% k* _( b$ [& F9 P* p
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any; a" w2 @. L, v4 \+ Y4 ]# v% J
* 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.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>$ G4 p0 \: b) s2 W7 H6 }2 v
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>7 X3 n! k# d7 Z
#include <linux/mm.h>" m, N- @; \" i k, L
#include <linux/dma-mapping.h>" K% D0 G! ~& R+ [
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#include <mach/memory.h>! T- q2 T1 M3 {1 R" m
#include <mach/hardware.h>) U4 f9 d8 ]; ^9 C4 s9 }3 U
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG5 \9 T. S0 [( A9 Q
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG( C: z: f; d- H
#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__)3 @2 }# i w6 g/ L4 ]2 J
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else) }3 f, T' @# Z
#define DMA_PRINTK( x... )
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#define DMA_FN_IN- k& H1 S+ Z0 a6 ~$ W/ c" v$ c
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). Z8 f0 D9 ^/ N8 q& A$ E- \
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20" t& f% l: ^# I5 f& o7 q
#define ITCINTEN_SHIFT 216 D; [/ q# s3 M: Y
#define TCCHEN_SHIFT 226 d3 U# n( X. {$ @7 f! r7 w) y! J
#define ITCCHEN_SHIFT 23# W$ F* z/ k3 O7 e+ o. P) X
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;; A- e# l( K: u' V; b6 T5 c
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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);8 c2 R' d+ N. s Y
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;# C9 J( o; J6 e6 I" X: \
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;( O+ i: J) o$ v- r5 _8 N
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;6 S- M9 N4 d; {9 q' ?3 P
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static int acnt = 512;
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static int bcnt = 8;9 q! u1 o3 j8 K7 Y2 W
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);2 |& g% Q# Z0 Q6 t
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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