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 application8 E; f, b6 i' a; R
/*& e) l. d* \8 X& {3 F
* edma_test.c0 u+ h' X2 P" I4 r1 e3 r
*
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* brief EDMA3 Test Application1 d7 t/ J- T9 J! m0 c. ?
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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 BE4 F8 u0 K; i. m$ Y1 y% `! F/ G+ c e
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 @9 D* z3 b6 d9 e: [) Z
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! c3 s6 L) G3 K9 z' n
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* This program is free software; you can redistribute it and/or# J g z/ ?9 z/ y Y
* modify it under the terms of the GNU General Public License as2 |, Z5 Q* x& X2 F: G: i
* published by the Free Software Foundation version 2.% ~6 ^" y0 H) q. G
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ x+ ^: P$ s# X+ P: Q" M/ k# O# R
* 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.1 ]& G7 @3 f8 y; ?
*/
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#include <linux/module.h>
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#include <linux/init.h>7 q. x4 ^& i c. r m* z0 _
#include <linux/errno.h>
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#include <linux/types.h>
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#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>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>. L% e. r7 H; w% c. I p
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#include <mach/memory.h>1 Q3 N9 s; u1 H% k" d
#include <mach/hardware.h> A4 S f$ w3 j" C4 U @, A& F+ G
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG% W3 L6 Y- Q3 j) Q% f' y; U
/*#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__)' V7 E# v$ P" s- ~# h1 C' H# z
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )4 K5 C1 W& J# ]8 n5 q5 A% }
#define DMA_FN_IN
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#define DMA_FN_OUT% ?" }" `; m, R% Y! X- T
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( `9 a6 l m: l6 I+ }
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22: `6 L0 ?' b% V* S& u
#define ITCCHEN_SHIFT 23* D7 k4 V! E: b1 {5 T) i! J
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static volatile int irqraised1 = 0;% T, B+ J o: h0 A
static volatile int irqraised2 = 0;. ?& Z9 I3 X0 C. U q) Q3 g
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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);5 `% Z# w. m* r- a. Y: N) e
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 ^( {8 |! f- J; `
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dma_addr_t dmaphyssrc1 = 0;) @$ ?' \% @! S$ w6 J2 \
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;3 g8 D, Q. p \4 O
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;7 R. V) [8 Z9 e; c5 _
char *dmabufsrc2 = NULL;. W& b" y' x F$ \& a U
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;. {& z, Q) O: O& c! y; i4 @
static int bcnt = 8;+ r% e& q- o$ J* b
static int ccnt = 8;9 A0 R* F, P" {- z" b2 v
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);" T: X7 j! i& T9 x7 c
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