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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/*
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* edma_test.c
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*
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* brief EDMA3 Test Application3 V- E- O$ A$ T# P4 r/ r1 _
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* This file contains EDMA3 Test code.# ^8 Z7 [2 u5 ]& V2 b6 |
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE4 N( c$ r1 ~: c
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 E+ u8 s q* T" h4 s
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% E+ P5 B3 L7 p8 ?; _
*
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* This program is free software; you can redistribute it and/or4 G+ [; \3 p5 }' i
* 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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*2 \( F, O. R! ?+ I7 b2 H' P
* This program is distributed "as is" WITHOUT ANY WARRANTY of any% @ d& t% ~7 _
* kind, whether express or implied; without even the implied warranty: [9 _' @7 J" ]1 q2 k! x3 a
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details., Y; d8 F! ~+ Z; v; d
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#include <linux/module.h>
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#include <linux/init.h>! w, i9 j% {' @- `& j [6 \
#include <linux/errno.h># H6 P! U( Z6 A5 Q9 @
#include <linux/types.h>
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#include <linux/interrupt.h>" i: _7 P2 \# k2 J( ^% m0 i7 G- S1 [
#include <asm/io.h>
#include <linux/moduleparam.h>% Y5 C$ [3 [* c R0 m, Y+ Z% G
#include <linux/sysctl.h>& ^( y+ F* k# S5 R' r( @
#include <linux/mm.h>7 S O5 O8 ^: P& C/ `7 ~ x
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>" [) b x! h9 d- a- m+ _
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG/ e2 e& p/ c6 ]
/*#define EDMA3_DEBUG*/, F2 \/ W, x) k9 O( s( @
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#ifdef EDMA3_DEBUG0 Y, { K3 ~8 D' I( m+ X$ Q
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ V; i' |/ o: e- |, l# F+ ]% {
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ P" q& R- M0 [# [: U
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): {5 k) D; B8 z) ^. L" t* L9 C# U, i
#else9 o' _0 n6 l/ ?- ~3 t
#define DMA_PRINTK( x... ): r/ I4 {4 d8 E4 H. G
#define DMA_FN_IN
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#define DMA_FN_OUT0 R. z7 k% o' T' w; ?
#endif( @2 B, a0 W% H. p( g
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#define MAX_DMA_TRANSFER_IN_BYTES (32768) h- o9 d2 L; u$ ]
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21; q" ?9 _8 h5 H$ \
#define TCCHEN_SHIFT 224 c, [' o$ t3 C& W: W
#define ITCCHEN_SHIFT 239 v9 K7 @2 g( p# B$ l) V/ o& t6 b
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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);* @; e5 {8 z# w, l" U- b
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% T) M, d1 ?6 A+ w* Z
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;0 f! G7 A; j5 d. m \# d% b9 e
dma_addr_t dmaphysdest1 = 0;- C$ V. T5 e& \9 N: @
dma_addr_t dmaphysdest2 = 0;( U9 d Y. |8 x% ?
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char *dmabufsrc1 = NULL;0 r+ J. ?( Y6 j5 S* y' `, K# P
char *dmabufsrc2 = NULL;) Q/ y) {4 r! \
char *dmabufdest1 = NULL;2 v4 y; a0 R7 h6 ]% \9 C0 r
char *dmabufdest2 = NULL;) t+ ~5 E: ]- H+ c
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static int acnt = 512;
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static int bcnt = 8;) |% b6 B5 ^" b9 I& {
static int ccnt = 8;8 ~7 j. }; \: W' c1 Q8 l) t2 P
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module_param(acnt, int, S_IRUGO);) Y r% m' }+ E( _
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