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
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% l, e. n+ h" ~; {. l/ S
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT( \! B' @- d' [
* TO CHANGE.( `0 P: }. e: W/ _
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ w8 E8 c- r1 m
*
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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$ c" E* f5 k: j- P% G1 p- _
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% b# @$ @0 l( g" s1 q8 q5 X
* GNU General Public License for more details./ \/ h7 k5 G$ R7 u1 w1 {0 ^/ Q
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#include <linux/module.h>, K z4 V* N J6 j% K# ?
#include <linux/init.h>, e9 @3 _2 j5 g* b: d/ I
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>8 e+ }/ a8 K; f+ P5 {
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>) Z5 i. q/ }5 ?" h
#include <linux/mm.h># d. D4 U0 P1 V* c$ _2 N
#include <linux/dma-mapping.h>
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#include <mach/memory.h>0 b' K2 Y% q. `- U! x( W# _" t5 c
#include <mach/hardware.h># J4 P1 ^$ B2 E# p
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>9 I- Y" g# {: x# r' _0 [) s* {- b
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#undef EDMA3_DEBUG; P6 N5 E6 i/ |8 r) |
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)0 B0 |; s; n/ b, C. m
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else1 H: U% K- {& t4 g$ x' w& D
#define DMA_PRINTK( x... )% H, g# s) k8 _1 c" m3 a- n4 p
#define DMA_FN_IN
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#define DMA_FN_OUT, d& I5 L) W }8 O: n" P
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)) Z4 V9 O$ ^. ~6 c2 |0 v t, _
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20- ?/ ?3 a3 q& }
#define ITCINTEN_SHIFT 21( e' g& y! X4 x* o0 c8 W
#define TCCHEN_SHIFT 22* c( {* z4 a! Y1 ?- O9 b# w
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;* [1 e5 J& b4 D* q( }6 t
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);; ?2 p6 G: P9 C/ |
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 M) {+ r) P4 E1 }- R# ?- P% v$ `
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dma_addr_t dmaphyssrc1 = 0;3 ~; ], v- G( V0 i; }5 V- [6 L: f
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0; }) w. W" ?7 G8 c+ w. [$ P; s
dma_addr_t dmaphysdest2 = 0;8 O! F9 X. {5 D
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;4 Q3 N# j) J p% Q( f& s& ?
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static int acnt = 512;* J7 g3 q2 d. K# Z3 e$ D
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);8 I% L' @ G N
module_param(bcnt, int, S_IRUGO);6 s1 E; A. H! T: @1 B j: ]0 V
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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