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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/*6 H+ T* U7 j4 ]
* edma_test.c; |/ f& E: W2 D; Y. s) V6 _0 G2 l
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code. r9 y+ f) T0 n* H8 J5 S8 v
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" A! L$ o0 q7 s. l6 k/ O% e1 R) N
* TO CHANGE.9 Z+ b& _! A$ S7 v* p
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 a9 k9 f: S$ m5 C
*
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* This program is free software; you can redistribute it and/or9 f( a1 H- c( \5 w3 U( |
* modify it under the terms of the GNU General Public License as6 x! d. g6 C: {) U, K B5 R( t
* published by the Free Software Foundation version 2.: a! [; ^1 `- F
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any, V' `" {% R% c: l, |
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; b6 l7 t$ C- J- \5 p5 |7 z
* GNU General Public License for more details.' N) j7 L% M! S/ ]. M: R# `4 j* T/ O
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#include <linux/module.h>( e7 x) Z @( Y4 _
#include <linux/init.h>
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#include <linux/errno.h>% R# B4 A+ L7 I8 U6 B; c
#include <linux/types.h>( Z3 |1 J/ o3 M
#include <linux/interrupt.h>' q9 w7 X& _( M; K6 `' n, H* {
#include <asm/io.h>' i i% e$ ?8 i2 ?* K5 b& X
#include <linux/moduleparam.h>, G) T) |5 s% x/ ^ N. n0 N
#include <linux/sysctl.h>
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#include <linux/mm.h>) K9 C1 u" s. o7 s2 a4 }2 P
#include <linux/dma-mapping.h>
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#include <mach/memory.h>$ g# Z/ C3 E9 f6 P2 i6 P; a' m& \3 }
#include <mach/hardware.h>, K( z+ g+ `0 c# c! d
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG1 o0 `* w, x* V1 v) @
/*#define EDMA3_DEBUG*/8 E3 F7 f5 _' X$ D9 [( v1 d
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)1 l+ o9 e; g9 D3 u m+ A
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) U/ j; H3 G8 Y% ~
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)4 L* N* d* V9 x
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN/ |2 e3 H$ H' Z
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* l- m5 W. y* H) m, X
#define STATIC_SHIFT 3% t; V) \7 q( u6 {$ p
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21: m2 d3 ~' D6 ?
#define TCCHEN_SHIFT 22 ~7 S0 F! }, d+ I; y* f. c' L
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;8 Z) B$ s# g& R
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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 |& f# v8 p4 L; W
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dma_addr_t dmaphyssrc1 = 0;! N; H3 @% i+ f) a6 ?* @/ f; f4 ~+ H
dma_addr_t dmaphyssrc2 = 0;1 {) \7 Q7 n J9 L5 N+ W, d) a
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;5 {7 C( }1 o. t1 u, F
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char *dmabufsrc1 = NULL;3 \! H9 u9 Z. I1 @
char *dmabufsrc2 = NULL;( d' r& k, Q. Z' ]& F
char *dmabufdest1 = NULL;3 {& c. M/ R0 G4 c* p$ B' X. ]
char *dmabufdest2 = NULL;. h0 o' e X2 ?; Y
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static int acnt = 512;
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static int bcnt = 8;4 N; u3 |3 s2 p+ _- k/ B
static int ccnt = 8; \: R4 w* }$ j% R
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module_param(acnt, int, S_IRUGO);( H! F0 I0 q1 i4 v! Q6 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