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.c2 C5 C6 r) n: N+ ]- {
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.3 L4 y$ n0 b7 H0 q: T
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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
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& Q% t7 `, Y$ W9 `; q
*
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* This program is free software; you can redistribute it and/or' J( u1 w) F* j0 I
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.2 o1 D# W/ l$ ]1 p! I) p
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 S& x& k8 S6 [5 I
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& q' k2 t- ?% S
* GNU General Public License for more details.& s* U: L3 X7 h" m# J; g/ g d7 h
*/
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#include <linux/module.h>, t6 B# q/ T) f
#include <linux/init.h>. \( X/ G: l+ N O% u
#include <linux/errno.h>! V' E* c2 T5 k
#include <linux/types.h>3 P) W' q4 |3 F
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>6 d3 w' I4 @* U' Y; V* w! H& C1 V
#include <linux/sysctl.h>% Q3 i: ]" H. B% y1 V/ L3 r& A$ b4 _
#include <linux/mm.h>5 y9 S$ t+ p0 f$ s
#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>4 `! N3 g+ V5 |: b3 j
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/# L" i$ a2 J. Q5 d) e* @) k1 k5 l
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#ifdef EDMA3_DEBUG" T+ R1 @' w' E8 t: Z
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)" F* e* U: @2 e2 u' e
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)5 W0 ^1 X7 c% `, F* i9 ?6 J
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN z7 l" [! ^ [4 [' P$ M
#define DMA_FN_OUT1 R! ~ ?6 B1 I9 N: S2 J! y: s3 O
#endif; R% h g* X# k( M
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# F5 T! d: o6 b7 m4 y4 b3 c9 C
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 208 g1 z- q% r6 o$ i1 ?
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22; i! H0 g# U, v6 Y
#define ITCCHEN_SHIFT 23: E2 C7 o6 c& ^% y8 {' W
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static volatile int irqraised1 = 0;
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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);, k4 y! b7 q0 t X8 V* 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;" Y$ e8 L5 l" G4 z
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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;
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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);; [2 z2 O. S) w8 T% E5 o. S1 c/ ?
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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