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$ ]7 ?! V$ O2 n7 c4 v! v$ _+ [# [+ i- m- b
/*0 C4 u- C% H4 x$ @! V
* edma_test.c5 O/ R% _+ J9 s; U+ W; Z
*
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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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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: s& }3 g) u+ R8 `9 o# m( e5 S+ }
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) t* k3 c+ K0 h7 j- f1 e
* TO CHANGE.6 U% I4 z* O) y3 Y) F$ X( {0 m
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. r6 a% P$ U) J0 _. C
*
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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& K/ s. D/ @7 m: m4 N2 v
* 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! {. x+ u9 L. V6 ?9 ?8 U. R' I7 v1 ^
* kind, whether express or implied; without even the implied warranty( \2 {- Z! R, K
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ ~0 r& e& y7 u* V7 ?
* GNU General Public License for more details.
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*/" i( h5 g: q6 B. Y
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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>6 B% D% J6 |7 R( |6 A7 d/ J$ I# n
#include <linux/interrupt.h>! L4 [1 V7 e1 v: i
#include <asm/io.h>
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#include <linux/moduleparam.h>) w) |2 ]% n0 m: {
#include <linux/sysctl.h>
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#include <linux/mm.h>& j" _1 y$ [, t6 S$ y1 N: u
#include <linux/dma-mapping.h>
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#include <mach/memory.h> a2 T/ p5 U( E5 k7 V2 t
#include <mach/hardware.h>2 Y+ K4 z6 g+ t& ^) g4 Z( [4 z; a
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>2 b! M: Q4 g8 ~! P% |4 ~$ S" I. \
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG$ g, S9 @* L; a6 J" F/ X* `
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
#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( ^* T x/ p0 J" }0 T2 z3 g
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT9 W& }, p) ~, ^: N: i& z
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3; h. |+ s6 E: f. p' B4 Q
#define TCINTEN_SHIFT 20: ^3 G' B1 {8 [/ Q! B
#define ITCINTEN_SHIFT 21 ^1 c% Y5 k$ F: J* ?% U, D
#define TCCHEN_SHIFT 22) L! w0 c, m0 g8 d6 X3 o
#define ITCCHEN_SHIFT 23
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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);
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dma_addr_t dmaphyssrc1 = 0;, c& B1 d2 N: p ? {
dma_addr_t dmaphyssrc2 = 0;/ d' y$ U- u7 L8 ~2 @: L/ g# R3 ]
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;, h, w. i; |0 d T2 u. k9 ~ ]
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL; L" L3 s( B8 |. t0 p5 T
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static int acnt = 512;% o6 p- C% Z* `
static int bcnt = 8;) D m2 e; O3 w( g9 e+ J) o
static int ccnt = 8;8 x- g+ ?# h/ Z0 z% f) d \) h0 A
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);0 H" ?3 S0 u3 b: y/ i) y
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