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 application0 W, ^- u, f( O) {
/*
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* edma_test.c$ S' i# r- b' e" V1 A
* {. y- ~/ r4 l0 D) H, u
* brief EDMA3 Test Application6 _. ~7 Q+ ]4 t u0 W. p" `
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* This file contains EDMA3 Test code.9 v0 i$ L$ ^2 F# P. w d
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE1 Y4 U8 Q0 q- u' T4 }
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT6 M. i) l7 J8 E3 t
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 n; X5 b. D& U( 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
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* published by the Free Software Foundation version 2.. a1 p( I* Z, [( C# ]+ ]
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any, o- u' h4 _0 M7 I( @
* kind, whether express or implied; without even the implied warranty- w; i1 @: W0 I# L9 s& e
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! Y. x& t0 i4 h4 Y' B! B, s
* GNU General Public License for more details./ u' s: x7 D: h5 s& g8 e
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>. F7 C8 w" p$ G0 h2 C) M4 W
#include <linux/interrupt.h>2 @' G- j. P1 @( R7 T. c: ]) _8 q
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>2 `7 ?/ f% L8 V m
#include <linux/dma-mapping.h># S% o3 N" W& \4 P
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#include <mach/memory.h>9 x9 p# C- `! }; z, g5 f, y
#include <mach/hardware.h>' K5 l; _/ x" `6 j' _& X1 A$ V
#include <mach/irqs.h>4 A- z) j0 M' W, Y7 c4 X% v3 ]
#include <asm/hardware/edma.h>1 H( E( p+ Y5 R( L0 x! y) U
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#undef EDMA3_DEBUG
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/*#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__)3 h2 X2 J% U% \7 H. y: k
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )- E# Z R: b- D. }. J5 `
#define DMA_FN_IN0 P3 P% H4 I' @9 z
#define DMA_FN_OUT7 ?: I) {6 C7 _7 }% e4 g
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3. ?$ w, d! n3 Q* d- W! n% u
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 220 e$ _' r9 |4 w. F" {2 R- x) c
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;5 D% B8 Q4 F0 }8 W- H
static volatile int irqraised2 = 0;, W$ {0 z1 A ]+ H5 P+ a4 u
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 J X9 a) _3 r1 ~& Z! N7 L
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# ]0 X9 n4 d L& N& P5 a
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% s" {( v+ ]" r( f( s5 L4 `0 z
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dma_addr_t dmaphyssrc1 = 0;8 j/ X3 H- D# J
dma_addr_t dmaphyssrc2 = 0;3 \) }3 v% c) p8 e& {
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;: a% z- t) Y$ E# O
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;/ g+ G" s% G& _# b/ L
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static int acnt = 512;9 k" W" [' j2 [1 L
static int bcnt = 8;2 X; c9 X! ~! `4 k, ^# A
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);1 {7 t7 g# h9 X2 ~) b9 h" Q9 \
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