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 z9 s: w y2 M" T* Y
* edma_test.c3 _8 W. g3 \9 F& ?: D i' k
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code." i+ B; U X& m U5 `& l+ O
*
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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- }; ~3 ~/ U g; m: k" s
* TO CHANGE.3 C- s1 |7 H z% n3 c
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 ~. m( A8 |3 p+ |/ \# q
*
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* This program is free software; you can redistribute it and/or' e+ E5 k# x1 m5 \+ A* u* g. z3 ]
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.- y8 [& x2 K4 }1 B7 O1 a$ ^
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any" A( T, T7 I$ Y3 G, y1 D2 R: V- e( g- A5 [
* kind, whether express or implied; without even the implied warranty$ w+ g3 Z8 S* N/ ^+ ~
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) g5 w+ A. S5 g4 j
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>+ k1 S0 s2 u1 {( e9 ~+ I3 w" }
#include <linux/errno.h>
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#include <linux/types.h>9 u7 l" v0 h+ Z) L" i
#include <linux/interrupt.h>: s3 s! f# ~' O- X( V2 \
#include <asm/io.h>
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#include <linux/moduleparam.h>8 F5 l p) ]) P b8 `
#include <linux/sysctl.h>
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#include <linux/mm.h>+ [( E1 P" i2 E
#include <linux/dma-mapping.h>
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#include <mach/memory.h>, X7 @2 R& d W& ~6 K/ N
#include <mach/hardware.h>8 w B) q. G: c1 f% y. t# o
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>5 D; d, u; z$ f4 U7 m
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/1 ]5 [! w3 p3 e
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#ifdef EDMA3_DEBUG, {8 h2 Q$ p' o. w
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) l- w/ K! Y7 b/ J
#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__)
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#else+ N; j, i( A5 R" W& o
#define DMA_PRINTK( x... ). w% P. K* _& {) W
#define DMA_FN_IN
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#define DMA_FN_OUT! |; ]* ^% R$ v# r: J
#endif! d, {9 g; b, R! A. c* m8 n
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)/ _8 U/ w1 d- q
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20: f3 t& s0 \7 s/ W u
#define ITCINTEN_SHIFT 21, [# e7 @/ @& l# }0 m3 R9 P2 b! B* r
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23% U' k: S# H0 n; J& I9 R; j9 R( q; Q
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;( B4 M A# [1 G! a9 k* e
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 ~; Z, A7 k/ Y! ]6 P5 i
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);" z( e7 u, B, h; k A8 @& P6 ~; ^
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dma_addr_t dmaphyssrc1 = 0;7 c/ A3 u+ o2 ~& b E q( D! o, H
dma_addr_t dmaphyssrc2 = 0;4 g5 V1 n. [; X. _) m' \3 r
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0; [/ b2 C; f5 r- Q. q
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;+ L& w" a: b, g0 d
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;; h1 _! j2 z# k' |, A' h. y$ F! k
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static int acnt = 512;9 A. G3 `* \$ h$ O
static int bcnt = 8;1 ~. Y/ T1 z0 R
static int ccnt = 8;- W: ~. k: d$ G6 L1 X9 _+ \# n/ b
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module_param(acnt, int, S_IRUGO);
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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