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* y; S9 m, k) {, W e
/*) j8 K& F& G2 Y
* edma_test.c) V* j' T0 V( ~: F0 _" a- {
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.( d4 K% {; a @5 c( ?4 Q7 S9 ]
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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 SUBJECT4 s7 a G/ z, X% [
* TO CHANGE.* W/ b8 U D( H) e8 g4 D# y
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* 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/ Q$ c. Z M" U
* modify it under the terms of the GNU General Public License as: `6 f4 q& ]& X: J
* published by the Free Software Foundation version 2./ |( u- p* M# r. k
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any9 c: Q; n9 [# Y: `. P# |: ]/ p
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 d6 b. Q& ]: I/ b3 o5 i) |
* GNU General Public License for more details. X& `, j8 X0 l5 g+ x2 [; _6 i
*/' t: k( ~- V- V" p6 g2 S$ z- r! Q2 P
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#include <linux/module.h>5 w) M& U3 e( |- G" S
#include <linux/init.h>5 @ A1 \ L% m* ^* f2 r+ f
#include <linux/errno.h>1 w- e8 P; H6 }9 P, X
#include <linux/types.h>
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#include <linux/interrupt.h>; W* `1 G$ r* P- P2 ~- w. Y( f
#include <asm/io.h>* H5 r: _7 O7 Y& `9 j! z
#include <linux/moduleparam.h>& b6 i5 }+ f1 C
#include <linux/sysctl.h>
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#include <linux/mm.h>0 c& ^0 l7 w$ c
#include <linux/dma-mapping.h>2 N9 h, k7 T1 {( q4 c
#include <mach/memory.h>8 B( W" v: G: w* f6 _
#include <mach/hardware.h>* n, @' B; ~3 n: q1 L7 _8 O8 j5 G
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>* A6 K' I: N @. Y
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/& N$ _) w1 f1 C1 J
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#ifdef EDMA3_DEBUG& ~8 d& k0 {. g: I6 i+ r0 m
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). q; e. F6 M1 i4 j1 F& f
#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
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN; `3 B: |1 E P7 b- b* M9 J8 Q
#define DMA_FN_OUT- }2 j0 t& [. a9 n2 w4 K: r" B
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3' {, `. L% l% S: V# F( S: G
#define TCINTEN_SHIFT 20( |# N; @8 [; ^) x. U
#define ITCINTEN_SHIFT 21
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23. T* T1 \" L* {( x# a1 w
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static volatile int irqraised1 = 0;2 m4 W8 O; U1 o% y
static volatile int irqraised2 = 0;" Q# D4 x- }& x+ i! g
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! V3 M! j/ J n3 q$ ?3 R9 a
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 Z9 H7 b/ V% w% N! C6 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;0 W! [- L: e7 H g" y# h
dma_addr_t dmaphyssrc2 = 0;" Y0 j1 @7 Z, S& |
dma_addr_t dmaphysdest1 = 0;% x7 A) Q$ @! |1 l% r7 f% o+ I
dma_addr_t dmaphysdest2 = 0;+ b/ Y1 D* W6 ~
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;* Z; Z' B0 \/ [! _2 f2 j- Z
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;" s! C" j; P2 {
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static int acnt = 512; e# W$ E9 Z5 L; z
static int bcnt = 8;
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static int ccnt = 8;4 m9 n0 }% R6 i) Z
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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