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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/*; e9 V1 m1 n8 U9 p. Z5 z: _4 R
* edma_test.c
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* brief EDMA3 Test Application
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*
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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 BE1 q% s3 D i$ E9 M
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.2 Y& ~) k( H0 `" w5 @
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 n2 Q* p/ w& q* C7 Z' V3 B
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* This program is free software; you can redistribute it and/or# h# N$ q2 q/ i3 Z1 E% w
* 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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* This program is distributed "as is" WITHOUT ANY WARRANTY of any- Q1 D7 R. z- l9 I
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 w l3 t/ {' H
* GNU General Public License for more details.
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#include <linux/module.h>4 p2 J3 v+ ]1 l, [+ V
#include <linux/init.h>/ l% f3 s7 K* d* Q
#include <linux/errno.h>: [' a, g0 g7 E9 o+ Y5 d
#include <linux/types.h>( P ~8 z7 l5 w+ G' F5 K
#include <linux/interrupt.h>$ C5 y6 y- F" S8 b' E9 O2 j
#include <asm/io.h>: N. N8 i) x& i \8 I' ^
#include <linux/moduleparam.h>& r& T0 T( i* }0 ?8 i
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>4 U5 A; P6 x* s# ]
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#include <mach/memory.h>& Z, a% m- K: P( Q4 {$ H* O
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#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__)% o; W7 _1 y/ q, X' P% x
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN) K; t* ?$ I# c& w
#define DMA_FN_OUT! w7 V. e% O- X+ |4 q
#endif! p8 n. f8 |: O6 l
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); u8 J5 H* v3 f Q
#define STATIC_SHIFT 38 ?5 w t( f( h) y/ P$ y: C$ `( \
#define TCINTEN_SHIFT 20; X) ~' j3 u1 Y
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;+ q+ S5 L- Z# K" c7 m
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);; G1 i/ R4 W$ O9 Z" u5 C: A7 [
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 K5 I- k& a7 z4 k
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dma_addr_t dmaphyssrc1 = 0;- m; y7 x& t5 M/ ]% X9 e7 D/ ]9 f! V
dma_addr_t dmaphyssrc2 = 0;: _+ }9 J% f4 j# L, B6 P) A+ _5 W( H
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;; I* @1 f# N" }) a
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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;' i9 @- T) t" N) d8 \+ l
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static int acnt = 512;5 D1 Z6 e. ~6 W
static int bcnt = 8;% g$ g0 @0 ?/ Q6 W1 l i8 Z
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);$ G9 F) J/ ~* s
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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动