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& W' S7 @# q: D! Q; Z! b
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* edma_test.c7 P8 ~" e, y$ m. _) F
*+ a, D( S1 _# G
* brief EDMA3 Test Application+ z& V* }+ H+ Q0 R. x- w
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* This file contains EDMA3 Test code.1 i" K# {" {! X! b4 I
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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( R$ ~8 M- D: H3 O7 Q4 r5 O9 R
* TO CHANGE.# }- I" E6 }* x3 ~/ ~; F) Q
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' p* y; U/ Q# t* @9 l
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* This program is free software; you can redistribute it and/or) p! {$ S8 |1 E* |9 C0 N
* modify it under the terms of the GNU General Public License as1 p! m+ p X. w# n1 u
* published by the Free Software Foundation version 2.# v* W# ?) X* A s0 T
*/ U8 Z" F6 `8 J) j. X8 h; ?; ^
* 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% K$ V1 K* i- x4 R7 [$ h
* GNU General Public License for more details.
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#include <linux/module.h>( d& _: Y B# C, }; t) z
#include <linux/init.h>' N- x! |6 g8 l2 `, A: h$ I
#include <linux/errno.h>
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#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>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>3 x2 F8 [3 n; A( \! o
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG) T! ~& n! w1 Z0 Y
/*#define EDMA3_DEBUG*/9 v6 Y6 B* `2 q+ b a8 w$ g6 k: N; a
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#ifdef EDMA3_DEBUG9 I9 Z) k+ t, x M, n9 Q
#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__)- G7 V1 h/ w' U+ ]' b: U
#else
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#define DMA_PRINTK( x... )1 Z0 Z4 N, d9 y$ b4 e
#define DMA_FN_IN1 }3 m! w9 u& A! o" Q: ^6 d& d& m
#define DMA_FN_OUT* P: a5 M$ t/ V6 I
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3- e. x1 y+ B3 G3 k7 O+ L6 \' Q
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 221 \- W* k( j: E0 Z) y5 L
#define ITCCHEN_SHIFT 23, F/ s( I/ t8 I: {
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static volatile int irqraised1 = 0;; l* t; @" d/ ~0 s: @+ n" K
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);8 k) ]$ l% p0 H% }% U
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' y- R" F! H: x* k8 n; c; @7 Q
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dma_addr_t dmaphyssrc1 = 0;7 @7 g# m5 v$ x5 s9 z
dma_addr_t dmaphyssrc2 = 0;2 N9 T0 V- i: |! F m! V
dma_addr_t dmaphysdest1 = 0;& |& p V9 E. s
dma_addr_t dmaphysdest2 = 0; H" M3 V$ N! n
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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;5 m3 C7 ^) a, s% O4 y& n
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static int acnt = 512;5 T, t( w# G( N
static int bcnt = 8;
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static int ccnt = 8;. v5 ?7 {1 f/ T" N
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module_param(acnt, int, S_IRUGO);
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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