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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/*
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* edma_test.c* p7 y8 U$ R2 L: t+ [
*
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* brief EDMA3 Test Application
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*/ T" L% A( g6 ~
* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE4 K" E$ M' h, M6 n7 \: u R) M: A
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.2 \5 d2 F; D: F" D# u5 W
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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
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.* q _( r5 h$ Z6 a
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any* @! O/ D! ~) [+ u, [
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% [ Y j0 e4 Z9 b. s' y
* GNU General Public License for more details.8 F2 m0 {1 f; O. _& |
*/
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#include <linux/module.h>
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#include <linux/init.h>0 W2 j* h) [; Q* I9 ^3 G$ M& ^5 X/ _
#include <linux/errno.h>
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#include <linux/types.h>: S. b8 e p5 w3 T0 l
#include <linux/interrupt.h>/ o \) |5 ^# G# Q$ C7 \4 H; t% y
#include <asm/io.h>- f' B* k# }" Z M
#include <linux/moduleparam.h>- _) L9 z7 |( x# C" Z
#include <linux/sysctl.h>/ }- _% Q1 f5 c" P0 `
#include <linux/mm.h>3 b/ y* l( W6 Y% ]
#include <linux/dma-mapping.h>
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#include <mach/memory.h>3 O- p% t8 j0 J0 \ V
#include <mach/hardware.h>
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#include <mach/irqs.h>3 U8 t- g5 X+ B" U2 m2 {, y0 a/ Z9 `
#include <asm/hardware/edma.h>+ L4 H6 D7 ~; s) [2 B i
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#undef EDMA3_DEBUG/ P% v! H2 k5 W" J
/*#define EDMA3_DEBUG*/: K+ Z3 ^5 {, {. P& b1 o% g- Q
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# e" a/ `3 }7 s) d8 p
#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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#else8 h/ L0 E: e# s N+ P
#define DMA_PRINTK( x... ), _+ c0 v4 Q9 r; Q z) V. U
#define DMA_FN_IN
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#define DMA_FN_OUT$ G2 M `7 E9 B( ?$ M) b
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 34 t0 ?2 B& {' M6 _9 Q f
#define TCINTEN_SHIFT 200 X, r$ _+ y4 o% U$ l$ ^. |0 J
#define ITCINTEN_SHIFT 21- V: @1 I: A( y$ a. {% g
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23+ c6 \; i7 }* G) v
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static volatile int irqraised1 = 0;" W1 g$ Y7 L6 N$ N( X3 c& @% w
static volatile int irqraised2 = 0;. J [% }+ ~9 P- a+ E
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ q& o1 Q& p0 f
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ q* v3 g- N' {0 e: t% q4 o
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;
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dma_addr_t dmaphyssrc2 = 0;: Z! D. A7 |# p: Z
dma_addr_t dmaphysdest1 = 0;9 p( ]9 s. c" K) a+ }
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;* k6 |! {# m, b) s
char *dmabufdest1 = NULL;. S2 \7 c4 ~" G' t! ^
char *dmabufdest2 = NULL;
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static int acnt = 512;$ u+ ?" |/ u7 A- z. G/ t' H
static int bcnt = 8;: a4 c Q/ h3 |3 O# `1 e
static int ccnt = 8;! [* b6 \/ w6 i; J
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module_param(acnt, int, S_IRUGO);- [! z0 u( Q" M3 r
module_param(bcnt, int, S_IRUGO);; l1 P0 G, @- J; r
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