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' V% v7 M$ @6 K& j
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application8 l0 a$ U. x8 s* h* _
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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 BE8 f* e. A, w9 ?7 H. a+ D6 S
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) U l- I" ~+ Y: k- _5 h
* TO CHANGE.' |# T+ Y) z+ [; h/ b' W0 p
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or7 l. ]0 G! I9 ]6 w
* modify it under the terms of the GNU General Public License as& N% b7 e) l' p* i6 ?* W0 a2 a7 I5 F
* 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 any8 A( P5 T9 K" e( A! ~) Z+ F( Z
* kind, whether express or implied; without even the implied warranty( }$ X+ j$ l8 H: C0 @6 D
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, ~# m4 U. f: [6 q) T9 j
* GNU General Public License for more details., V4 R( N9 U2 W2 ~) d
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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 x7 z) N, ~1 f3 H5 U
#include <linux/interrupt.h>9 g t) H9 ]* e f+ v
#include <asm/io.h>
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#include <linux/moduleparam.h>9 r* T( A, M l& M2 O" k. B+ o: L' @
#include <linux/sysctl.h>( p5 `$ B+ A$ j1 U
#include <linux/mm.h>
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#include <linux/dma-mapping.h>, U# Z1 H! v, y# o
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#include <mach/memory.h> c0 d& k6 {- ^8 m& n7 p
#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_DEBUG5 }0 H! j1 r8 U" Q( C7 D0 X
/*#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)$ a# u# k; d$ M! b) n; @! l8 w
#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__)- i. k) C" T. N5 u V, H
#else6 W' W, T' [; M( C$ `; ^
#define DMA_PRINTK( x... )
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#define DMA_FN_IN+ S- y6 V: R- ]! I" }. U- X( e' P- J# S
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3/ x5 d5 I5 M$ o2 L* Y- N
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21: s) ?2 J. o) X1 \. _6 G" N
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23/ y4 a) F! S, l% N: \& _" J- q- |4 q
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;+ n; G3 U1 C% {8 z! X8 n
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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);& V! p+ D7 E/ s& T/ S9 Y
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;6 J+ D6 p& X. e
dma_addr_t dmaphyssrc2 = 0;% A; q( c/ w9 K
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;* X: V& ~* m6 P& S7 R6 `
char *dmabufdest1 = NULL;& ]4 n. y; l+ c
char *dmabufdest2 = NULL;0 ]! s8 M1 b" o$ O F1 }
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static int acnt = 512;' |" C( l( a7 P$ C! P4 }
static int bcnt = 8;* f; b/ v+ u: d5 V" Y$ x
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);0 R; Q% B9 _( X( x/ R2 v0 m) T# y
module_param(bcnt, int, S_IRUGO);$ u1 r1 N5 \' B* f; O) g& @' A
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