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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/*
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* edma_test.c. I1 k8 L0 {, c2 p. v/ A1 e
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, m v2 b+ j* k0 b* j( M) k. f
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. E( ]4 i* m, a$ ^. I9 F! X
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ t- w e! z9 j7 {9 K: v# D
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* This program is free software; you can redistribute it and/or u; C8 o1 ^ h3 O. T
* modify it under the terms of the GNU General Public License as5 t: ?( u! \$ x
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 Y w- E' d4 p/ o! e$ O
* 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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*/
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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>' Z% i% K7 a1 @; q& D* I5 f# x
#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>' X2 I. p7 ^% {" j( x
#include <linux/mm.h> C, _1 f7 b# t9 H; m2 L% F
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>! {/ N, ]5 e% z$ p9 B9 @
#include <mach/irqs.h>; F& B# u" G ~+ x; f4 N
#include <asm/hardware/edma.h>( E' q9 Q$ ?' \) B' q2 N
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#undef EDMA3_DEBUG: A; y- f: J1 M$ ]: y- A
/*#define EDMA3_DEBUG*/4 P- }0 p+ G" G+ h( W* N) G5 U/ R4 v1 d
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#ifdef EDMA3_DEBUG8 M1 h7 |- e' o& B% m2 ~; C
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)2 `" l$ i8 ]; f
#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__)9 Z4 ?9 q4 D+ K1 Y) P/ q
#else
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#define DMA_PRINTK( x... ), |# P% c% V. Y* K( w% C* |# ]
#define DMA_FN_IN5 j7 w& K- Q+ e- h- z
#define DMA_FN_OUT! Y# f$ W6 u- D( L' b: F
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)! Q/ T. Z/ Z9 u' @7 W
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 205 a( b* L0 d2 [+ e% [' h% M
#define ITCINTEN_SHIFT 215 e+ ~, z/ j" l" j5 U/ @9 I) b
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;: n* t9 a& S( s$ C# a* n4 S
static volatile int irqraised2 = 0;# ^: q0 ^' d) }& V' b# R% k
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, A Y' m7 F) j; e9 Q
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);/ r4 ^7 x8 {* u) K3 X# K
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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;$ l0 ]4 ?0 A! q3 l* e3 p* E+ o
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char *dmabufsrc1 = NULL;7 A' O$ r; @" K% I L; `) Y3 b
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;3 h8 G( z- x3 i! _1 Y8 W) h! V
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);. r" _2 J' s6 G% A/ Z
module_param(bcnt, int, S_IRUGO);. z3 Q5 A- X3 P* U
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