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 application7 z% y, L6 U9 q+ P9 ^* B1 d
/*
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* edma_test.c
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*3 l) y8 m. Q# e$ D0 z6 H
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.( Y% n* x7 S( z, S( U6 K
*
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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. w$ j* L* ~. [' d' B
*- E9 y. P" a8 z+ a/ I" W, r- o
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 C9 L* w6 O/ U5 p5 b9 B3 s
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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, A4 O: M- ~& ]6 q( K
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any' v7 L; C" ~; A" J# S! |8 J
* kind, whether express or implied; without even the implied warranty$ ^# n9 I n) [% f( n/ w. C
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& g3 l: ]5 O; T& N& P0 p. A9 ] t
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>$ n }; W5 N3 O w$ k
#include <linux/errno.h>+ j5 E) M+ Z2 B" Y6 i) Y+ h
#include <linux/types.h>. N% U) {$ W1 ^8 H. e: P; [
#include <linux/interrupt.h>
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#include <asm/io.h>) D E, ~* f w) A4 b3 M
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>* L, x7 [! g" E0 {. d
#include <linux/dma-mapping.h>- A7 e: S$ x7 D6 @: ?. }
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 w& l5 D% t% a9 W/ E
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#undef EDMA3_DEBUG2 A& W( s# m( x% D) N
/*#define EDMA3_DEBUG*/5 I' X# x$ t" x8 z% |
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#ifdef EDMA3_DEBUG3 X' n3 {( w. D: x& Q! E- v& j
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 L j+ O) \2 _' W- V. a7 c
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)6 c g" n2 m }5 n' B4 U1 j- s
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else& u) w+ O, s, {* I0 u9 I
#define DMA_PRINTK( x... )
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#define DMA_FN_IN7 o u4 ]5 r0 q& ?) g& {
#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
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#define TCINTEN_SHIFT 208 @8 n1 ]7 f' [$ |: [$ r+ O- n
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22' o% ]$ r6 Z$ `( Y* Z1 e4 N( k
#define ITCCHEN_SHIFT 23& y0 ]4 [4 V: L
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static volatile int irqraised1 = 0;2 f; u+ L: Y4 Q+ \3 _
static volatile int irqraised2 = 0;% D& A5 |$ L. g% }
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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);; i2 Q$ Z0 J4 y! H( _
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;3 |5 w5 L5 u" B1 J3 d0 _
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;- L9 g8 k% |) U8 \# P" B2 e7 o
char *dmabufdest1 = NULL;2 X4 g1 F6 m# s5 n( W) O( Z
char *dmabufdest2 = NULL;, { v9 b* c/ E$ n* v! a/ V" X
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static int acnt = 512;8 S# [( t# u9 M% T# e
static int bcnt = 8;
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static int ccnt = 8;# f/ \' V* I/ h# q* O7 q
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);1 h) l. r% {! ]1 h! P7 o
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