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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* edma_test.c# m! @ N g" }+ x: a+ [* e# e% `# d
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.* X& ^, P0 n3 X9 G3 ] n' n
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE/ F! _& V4 I5 P/ o; T
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: h R% v9 ~+ R" {% D. l$ A/ q
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* This program is free software; you can redistribute it and/or g" J( z# F0 d9 b6 r
* modify it under the terms of the GNU General Public License as2 B4 |- a2 `6 N
* 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
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* GNU General Public License for more details.5 O2 _2 ^ G' D
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#include <linux/module.h>0 Y# K1 x7 `6 w5 ~! f. w* ?! i
#include <linux/init.h>2 V; ^( m) p( A. A
#include <linux/errno.h>8 i/ L3 B4 S2 x3 ]& p4 B8 j
#include <linux/types.h>
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#include <linux/interrupt.h>$ Z2 l1 K) X9 A9 L c k: i
#include <asm/io.h>( D# }' P ]! i6 ~
#include <linux/moduleparam.h>: u+ r8 M+ u+ a2 F( |& j# S
#include <linux/sysctl.h>
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#include <linux/mm.h>$ A* I" c3 P6 G) q' b# G
#include <linux/dma-mapping.h>
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#include <mach/memory.h>9 P3 h5 b: T w. y
#include <mach/hardware.h>3 U+ r1 |5 w) U0 ?( j2 G1 ]
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>7 M U) T5 W, `1 p) }" @1 y
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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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! N; _2 @0 m8 i4 m m
#else
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#define DMA_PRINTK( x... )( ~1 ?! y8 N% V+ s& A
#define DMA_FN_IN
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#define DMA_FN_OUT1 W& `% M5 ]2 \! ~; J& B
#endif- @7 u. x& s1 t" Y
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% o) h& ^' J& m: ?
#define STATIC_SHIFT 3, a. l* [) l7 r; U% u3 a- r" R
#define TCINTEN_SHIFT 200 ]! _! Z1 ~6 l; F7 r* C" ]5 `
#define ITCINTEN_SHIFT 213 N, g z8 B, B+ |
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23& d" a1 |+ x2 M" D- S
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static volatile int irqraised1 = 0;0 J( R; Q, J5 W9 Q9 c5 d
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);
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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;: I! A6 U! B8 x( e) s' ?
dma_addr_t dmaphyssrc2 = 0;- B! W: h! s1 ]4 T6 P8 `
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;2 T3 G+ J; S& s8 K" {- Q( D
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char *dmabufsrc1 = NULL;- J! N9 V, y2 j6 V! @
char *dmabufsrc2 = NULL;" }2 H. q8 ]: R6 i* o( f
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;6 l: Z: V- R$ N. r D
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static int acnt = 512;
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static int bcnt = 8;) B; q; N) k- U3 X% a' W* _4 o
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);1 U% L/ ]7 x8 `) r" W
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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