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, B. `1 O$ R5 A9 \2 l; D
/*
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* edma_test.c J. W( f6 r8 \! j# d, z, A
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* brief EDMA3 Test Application% ?; ^, Q ]2 L: y9 i. l1 o
*
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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 BE2 p. j( U& _0 W+ Y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.% _ d- M/ z9 o) H- u4 g- Z% s
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or
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* 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 ?& k) X; _2 l3 P: f2 @ n7 f4 D% H
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 M0 C. v' o6 u$ g( ]
* 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>7 N0 I* V; _, `9 R, n
#include <linux/init.h>
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#include <linux/errno.h>+ e$ m3 ^' F9 s$ s) @$ b0 m
#include <linux/types.h>; Q. c+ \7 L2 K! c- y
#include <linux/interrupt.h>7 i8 L% C) }: U8 b! b% I
#include <asm/io.h>
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#include <linux/moduleparam.h>+ f* D' F5 E: Z: e& l- ~9 x9 K
#include <linux/sysctl.h>) g9 F/ ^8 H7 x/ B# M
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>. Q$ c, y. ~2 G3 ]# E! ]
#include <mach/hardware.h>7 I! c' }- R% m4 m$ Q. q' A
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>! p. k% `6 Q4 w& Y% e
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/$ @6 h! L1 m6 E0 T' p' Z* k: N, q
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- n7 c6 C' g5 \9 d2 E
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) m. i/ F, |, g) i7 |
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__) |1 F- y0 z4 t# u% w
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN7 d. z* M) ]* U7 I
#define DMA_FN_OUT. Y, n. L$ @% i% l) X* ]
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( y& a" T w* C, h' [+ h
#define STATIC_SHIFT 3% p& ^, a; y* b# K, ^4 F
#define TCINTEN_SHIFT 20) N! z2 t n# k3 _9 r& A
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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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);9 R% Z( C* w) a2 f1 K
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;7 k0 O- R* ~7 N9 s4 X
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;' F7 t9 p, L3 L6 X
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char *dmabufsrc1 = NULL;' l0 T: M+ Y4 m% T4 y" H9 X
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;. U1 ?$ @# ^) W* ^
static int ccnt = 8;- Y6 Q6 ~$ K/ u
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);6 a6 T- A/ s! k5 d
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