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% B- a. j! j8 Y1 G9 g- o+ g
/*% A' T8 r5 K& v- @/ Z- Y+ d. j
* edma_test.c
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.; `: z1 t- j9 A# w
*
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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
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* TO CHANGE." Z& X; X7 D8 Q4 f/ E
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/9 t$ i+ K8 f8 J& b7 ]
*
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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 as6 h9 S9 l1 U+ @* Y) I3 c$ T1 r
* published by the Free Software Foundation version 2.' x# _$ b3 L- z* M
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any1 @' H- b4 M ~0 J3 d
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 U1 L2 u( O# J9 D7 n; Q
* GNU General Public License for more details.
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*/
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#include <linux/module.h>2 y7 N! X8 G: K' I7 J
#include <linux/init.h>6 Z) A! u: a: k( B
#include <linux/errno.h>; W% F8 n2 f& R3 N! a* z8 c8 Q
#include <linux/types.h>
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#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>/ D" |9 q; t% b% O
#include <linux/mm.h>& @- a* q- z! H0 V7 H2 N3 [
#include <linux/dma-mapping.h>8 p8 t6 Q# P) n, K$ T1 u+ A
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#include <mach/memory.h>
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#include <mach/hardware.h>1 e- H- Q, Q' d0 O% y3 y& W
#include <mach/irqs.h>% A/ j6 B/ v/ P" U8 }# i1 Z1 W
#include <asm/hardware/edma.h>( O$ Y C: m i. \
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/9 r0 K7 W: K8 k. W8 T) {
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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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)8 r+ d' \6 j; q# U1 k e0 l4 A
#else
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#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)
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#define STATIC_SHIFT 3. t* e* F. r' V. D r7 R* O
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21, P5 x& d0 [, R5 g# w/ h4 x# v6 e
#define TCCHEN_SHIFT 22! z; s( |" x' L" n
#define ITCCHEN_SHIFT 23: i( N+ S/ v& ^3 M
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static volatile int irqraised1 = 0;% f L! F7 G) ]6 i, r
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);4 M w5 {8 F7 s @0 z- Y
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" Z1 E* {- `1 ~ _5 I: d+ A
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 {6 J: o0 c# I$ Y$ {
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dma_addr_t dmaphyssrc1 = 0;5 ~3 t! W- c. ?+ Z, H2 W( u
dma_addr_t dmaphyssrc2 = 0;% K# u' q1 H( `8 \
dma_addr_t dmaphysdest1 = 0;2 X5 j) ]% S$ g. G
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;1 w! o1 Z0 u2 K2 {- p l/ G) k( k
char *dmabufdest1 = NULL;, U+ f+ m0 Z& D8 M
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;; [! `8 [4 e+ }: k2 x! U- ?
static int ccnt = 8;; e7 {! E5 ~% G' n; z% `& B
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module_param(acnt, int, S_IRUGO);4 b+ `0 D1 f: R& X4 q2 p5 w, \& A
module_param(bcnt, int, S_IRUGO);1 @9 Q8 j D, {& }1 K4 b
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