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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/*1 T5 `8 \, n1 ^" s0 D" f% z3 B
* edma_test.c
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*# q8 j4 _3 B$ K( {9 ~ @* \0 T( y7 T
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.4 c) u l( l% F8 C& D
*/ f2 x2 o S; b; h( @; v
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE0 U& E2 n6 G( ?$ \: d
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT4 n9 k$ s; {, O
* TO CHANGE.- _ E& v; H1 i. j l0 t- m) y3 T) U
*- K0 ?' |( g8 t* s+ h$ {. A
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: w3 O1 i9 l( T2 M. J8 C% a3 r
*
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* This program is free software; you can redistribute it and/or8 f: u9 A: ]3 j p9 |
* modify it under the terms of the GNU General Public License as+ F7 F. \- ^7 D: v; a. n
* published by the Free Software Foundation version 2.( B: S5 J# y3 S" r& E) P
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty! Y+ f# ]4 X* r' m3 b
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ k7 ~$ p$ k* }6 ~) t7 |
* GNU General Public License for more details.3 h( M& q& `; B
*/
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#include <linux/module.h>
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#include <linux/init.h>0 N$ o" P' r+ Z$ w' a% [* d
#include <linux/errno.h>
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#include <linux/types.h>7 O8 [. f% L; O2 l% U" j1 ]6 H
#include <linux/interrupt.h>
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#include <asm/io.h> A9 K* R: s" p
#include <linux/moduleparam.h>$ c- f8 u7 \$ S+ Z! X
#include <linux/sysctl.h>, T! Q' H* i6 E, F! p4 M
#include <linux/mm.h>
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#include <linux/dma-mapping.h>0 N4 b0 K e4 W
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#include <mach/memory.h>
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#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*/& z4 `9 {* f) `# b/ `
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#ifdef EDMA3_DEBUG0 u+ k+ s9 o7 u _
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ r. N2 B( q7 A$ \; I: N6 B
#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__)6 J1 f& `8 e) L s
#else
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#define DMA_PRINTK( x... )" Z* y3 Z. {% j4 |6 _# ]1 t" e
#define DMA_FN_IN7 s4 h( m6 V& `0 A" {3 R7 p1 _- k
#define DMA_FN_OUT9 j3 f( s8 o4 _) b
#endif5 I1 t4 Y% a. u0 K$ ~
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* X$ O- ~. S& ~9 s, W$ b: u
#define STATIC_SHIFT 3/ d2 C' R; M( y3 v5 m. x, L
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 226 J2 j; `$ D; m4 F B
#define ITCCHEN_SHIFT 233 `, ~7 v0 G* y% j( o e
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static volatile int irqraised1 = 0;& N9 F4 m9 m( t. w7 P {/ ^& I
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);4 w7 M) U+ ^* e) D, x
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;
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dma_addr_t dmaphyssrc2 = 0;) L) x: _+ m* m9 T* a' P
dma_addr_t dmaphysdest1 = 0;8 }9 \! }$ n, u0 C2 v
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;, k/ c/ E' ?7 a r' d
char *dmabufsrc2 = NULL;3 W0 \' x: L2 r- ], A8 m- I' E9 i
char *dmabufdest1 = NULL;6 S; p) W! ]2 V6 h5 q
char *dmabufdest2 = NULL;* z* \8 W# A, t U5 ]
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static int acnt = 512;- o" m, |$ ?! z) s6 N w
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);/ i6 Q8 g9 } _) j3 E4 ]! D5 s% b
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