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 application8 _& M: E" a6 J4 q$ l
/*9 a$ s$ f! l/ Q4 b$ e2 M4 z" U# n
* edma_test.c; p. ~6 F# m! t9 k' u
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* brief EDMA3 Test Application- d& v3 Z; _4 p! ] N8 b
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* This file contains EDMA3 Test code.# @3 a$ H v$ s
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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; k! l# ~. n$ w
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or" C/ A* l4 P" z! R( |7 ~/ z
* modify it under the terms of the GNU General Public License as* Z( S& Q' M# ]: q
* published by the Free Software Foundation version 2.: M8 [( |9 n' [) ~/ F/ I0 M# O
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any: ^+ F/ \* d$ a' |0 p( k3 J( Z( O: p
* 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.
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#include <linux/module.h>
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#include <linux/init.h>; K0 y6 B3 X4 Q# |
#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>% Z2 Y2 @; O0 L/ u
#include <linux/moduleparam.h>/ u9 F% R6 k" Q/ `0 \5 G
#include <linux/sysctl.h>( {5 P u# r& @" A7 B; B
#include <linux/mm.h>- ?" W% | H' s0 z; `! t- O
#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>5 w; A# G6 }! f: Q" e
#include <asm/hardware/edma.h>8 c% u6 v8 O6 s8 n m' b& Y) Y* U& b
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#undef EDMA3_DEBUG4 W3 t( }/ R% g- ?
/*#define EDMA3_DEBUG*/! ^7 K8 J' A9 C, h9 o
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#ifdef EDMA3_DEBUG. H! t' k& a% f: ^4 Z& Z
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)& f8 `( X7 c& c
#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__)" l# `9 \5 f3 a
#else* `; e3 P. n7 ?
#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 w4 W3 w! u0 z
#define DMA_FN_OUT9 g4 H5 E* c) j5 t# Q$ k. q$ e
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)7 Y" P8 g1 l5 Z1 [4 q
#define STATIC_SHIFT 3, M0 G5 ?; k& S2 W) F6 F5 N
#define TCINTEN_SHIFT 20/ f1 E) k K) k" P" f) p
#define ITCINTEN_SHIFT 21( |( a6 Z% u% x% I3 v
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23% D) P, V+ z' u) T" \
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;4 M' M5 _6 v2 C7 e7 q
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. N- a% B4 q6 M0 k! ~- S
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;
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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;3 K: i4 P* ]( b0 t! `# y; K- f
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;' O4 S# T7 Z3 Q' K7 R9 L
static int ccnt = 8;4 v. q1 z, ?4 {3 n* I. k) x
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module_param(acnt, int, S_IRUGO);& ?1 A' F6 C2 o2 Q8 j& l
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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