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
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*
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* brief EDMA3 Test Application. s, @/ r' B% E2 |, L
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE! x' B% J1 l3 h
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.8 ~( }3 ], M- \* r8 V/ u' ?( E+ L! z- Z
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*- }; m+ |) @! f1 m3 u' ~) U
* This program is free software; you can redistribute it and/or7 V3 P1 w8 H- U" s' R4 E! H' r
* modify it under the terms of the GNU General Public License as, z6 m& M! l8 S+ Q# C9 u/ m! y1 H
* 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
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* kind, whether express or implied; without even the implied warranty% w1 P) u/ M$ S. s2 @
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>" l! P: E; j Q4 p" E
#include <linux/errno.h>$ h5 ?# S7 ~1 T. ~
#include <linux/types.h>! t+ o& k5 g4 n! L/ U. m8 N
#include <linux/interrupt.h>) r; Y' ]: n1 X! H
#include <asm/io.h>7 l) A5 G' [1 C5 D5 s$ \
#include <linux/moduleparam.h>; h2 O1 V$ R9 ? K% \& E. O
#include <linux/sysctl.h>
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#include <linux/mm.h>) K) d4 [) i: s" }
#include <linux/dma-mapping.h>2 k: }, j' G4 _/ R5 l
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>2 j+ W, b4 y) S" c# K6 z4 ?
#include <asm/hardware/edma.h> f2 R2 @* ^( a1 M+ O1 { b
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#undef EDMA3_DEBUG3 [4 m" w& `& U% r5 ^! V o& b
/*#define EDMA3_DEBUG*/, }, o$ x E% M5 G' X
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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__)
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#else
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#define DMA_PRINTK( x... )8 {1 L* A/ Y1 N* g+ d8 \4 l3 a
#define DMA_FN_IN
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#define DMA_FN_OUT3 K i7 t% s" R1 x, u5 O
#endif6 h, x% h3 h6 s+ i
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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 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 222 d6 P, W/ Z- V1 p* M
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;$ L* f1 [4 ?8 n" p" H9 c$ C
static volatile int irqraised2 = 0;5 e, U6 U2 L, m/ d& l. H) L1 k
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( q3 Q# Y I y5 C
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);! p! U9 V$ M. ~5 N) I
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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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;
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char *dmabufdest1 = NULL;, Q& l- v) _4 r' P* a/ r
char *dmabufdest2 = NULL;9 o4 ?! k x5 Z6 C5 V! s, p
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static int acnt = 512;8 |: K; B6 }) t: F( l
static int bcnt = 8;3 b. L- b- j. t) m
static int ccnt = 8;1 Q1 Z+ h* C& P7 d' S
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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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