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 application4 i* R2 c5 D. I' k& G
/*! M! P3 ^+ u! |$ ?3 ]
* edma_test.c
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*
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* brief EDMA3 Test Application) B# }" {! d3 \0 U
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE7 H1 o% q' x2 B- {
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# E& s' ^9 n9 P
* TO CHANGE.2 N7 Z% W }6 o/ M; [" c8 [
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as) V9 d: t4 {; L' u! E# x; Y" _5 d
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any2 u# y3 B! V v+ g7 c, n* t
* kind, whether express or implied; without even the implied warranty- a% }1 z& q! z
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* _" Z: l" ?. z5 a4 K" W; D1 I5 l
* GNU General Public License for more details.# D& u" P% J4 k1 U+ a
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>8 R1 ~) X0 [3 p! B9 s z; H: ^
#include <linux/types.h>& O1 |1 \+ U* N8 l% k; G
#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>/ v) C, [5 X" e% t" c2 A
#include <linux/mm.h>
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#include <linux/dma-mapping.h>, D, X$ a# X5 a* b1 k k6 ^
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#include <mach/memory.h>) S4 h/ [( i4 D7 k4 ]4 @7 R( d
#include <mach/hardware.h> ^, e6 X7 G& F8 B7 t
#include <mach/irqs.h>) [& f( T* c% \2 E+ Y% \! ], b
#include <asm/hardware/edma.h>) \- @& s7 y ~! V8 j
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#undef EDMA3_DEBUG a& { z3 |) K$ `) h
/*#define EDMA3_DEBUG*/. q* g5 l1 N" v
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#ifdef EDMA3_DEBUG: M) p& D( c4 x: T2 m
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), w( a% W/ t7 L7 U9 Q- V1 x2 Q
#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__)* f* ]1 }& M: w, ?) m# U8 M. M& O& q
#else. C6 a+ Y; u; S4 F
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( X3 z. `! s+ @. Y+ m
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20* T w* C. Q' V$ O# ~9 j
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22/ N) L2 h4 }' h9 ^: F
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;5 Z3 Y# a7 ]* T7 q& J- B6 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);8 E3 _9 x: V( d# P! m6 v+ }
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);! m8 o( K: y& ]2 P- z$ B6 p# P
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dma_addr_t dmaphyssrc1 = 0;; l) [: Q" o0 }- G7 j
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;# A+ @, b; s3 _: F4 M
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;. ~" }$ R' a4 i; V6 A* B& P& Q
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module_param(acnt, int, S_IRUGO);" _( e9 b5 E' g4 e( A e4 f
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