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, Q2 @; Y+ F6 \; k- U W
/*
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* edma_test.c; _; f% K8 w5 W4 B4 q# o2 w0 a
*
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* brief EDMA3 Test Application% _- F% q# n/ i% S' t1 ?" d a3 A
*
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* This file contains EDMA3 Test code.( q: q1 {3 D- Y9 ~; A8 X( r
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, U6 h# _3 \5 u+ e; W ~
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.5 O) R' [/ l; x6 J/ f
** c& A& o6 K9 W+ [0 K
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or' I! A( G! m, ? e: h7 Y' y$ ~3 S
* modify it under the terms of the GNU General Public License as @6 Z `4 _1 S# R- d \3 ?
* published by the Free Software Foundation version 2.0 Q }3 C/ t( e L* }( }
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ s3 S$ z0 |; q5 H. Z' m6 x! ]
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ `, Z8 q7 i% @& L: r! I
* GNU General Public License for more details.( i/ J5 K, Y$ `; e6 f" ], K$ v
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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>- q1 b+ r- U" R& q. u* O( B) D
#include <linux/interrupt.h>
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#include <asm/io.h>. L- o/ T& G+ R4 t: Y- s
#include <linux/moduleparam.h>9 v* Z7 S( R! |6 x4 F' T7 D" E
#include <linux/sysctl.h>& S1 D y- g- Q
#include <linux/mm.h>
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#include <linux/dma-mapping.h> b1 F7 I9 M, i6 { S
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#include <mach/memory.h>7 H' j1 l6 t4 T. @2 [0 e/ V4 r
#include <mach/hardware.h>
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#include <mach/irqs.h>5 T; p0 O& ?6 ~% G
#include <asm/hardware/edma.h>) p {. A: D. {6 h' w8 g, E
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#undef EDMA3_DEBUG2 w; o( _2 O1 o; `* g, u% S9 {
/*#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__)) x! h0 @- N' d0 p. D B
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! M4 _, ^3 H- Q8 r, e' D
#else7 p) H2 T0 g( ?- l
#define DMA_PRINTK( x... )* X' i( p* B+ |- ?; e# f7 C
#define DMA_FN_IN/ R+ ^2 Z5 S7 Q8 I, v4 U) i
#define DMA_FN_OUT
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#endif( b2 R) J! g2 C) u2 @$ g9 M$ P
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 30 N* F% j& K. s! f/ f
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21) S) o3 t+ [+ Y- H* k
#define TCCHEN_SHIFT 228 X9 M+ _8 X, l
#define ITCCHEN_SHIFT 230 m2 B6 G3 ]4 t# q3 e
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static volatile int irqraised1 = 0;0 Y/ |, K$ v9 k5 x
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);, m7 x! E( `% l. ?; ~
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" l3 ] n7 b3 e$ Q5 t6 B5 a3 n
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;% B. m/ w! t0 i
dma_addr_t dmaphyssrc2 = 0;. ^# I) A1 _0 _$ w+ l
dma_addr_t dmaphysdest1 = 0;. ]8 R* Q: h6 a( R3 u' l
dma_addr_t dmaphysdest2 = 0;* n6 g( m+ k2 ]+ i+ W$ @: A
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;3 ~5 K8 C, v i( p! u) s
char *dmabufdest2 = NULL;: Y/ B8 r( Q' u5 ]
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static int acnt = 512;
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static int bcnt = 8;' W4 w- _& @5 ^6 U3 W& y! x
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);8 q% X" i/ j- V& P1 P0 a
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