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
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.6 ^! M) ^$ w1 S) x6 j5 L" H
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE! W) S' C) d5 h) N' h$ ]
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT* m! [) B! S, S% F: C+ v! x
* TO CHANGE.6 c @6 v( E6 }1 n
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" @8 x ?: m6 S
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* This program is free software; you can redistribute it and/or: N4 e3 }. K7 L9 r0 e5 T$ P) b2 N
* modify it under the terms of the GNU General Public License as) \" E& Q7 N1 \& }* F) G
* published by the Free Software Foundation version 2.9 t& e: Z0 H, P# L% L, _6 j
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 i# q! r( n. Z
* 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>$ x& k7 l7 K! a C7 P8 x! z
#include <linux/errno.h>9 \0 E3 x# I0 Z) b9 O
#include <linux/types.h>
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#include <linux/interrupt.h>, k. w/ X3 @' [$ Y! U l" k' y$ C/ F
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>' y4 x+ E0 S8 x: S, c0 C e) D
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>0 z9 ^- y, C* ^4 H* V" R- ? K& F) a
#include <mach/hardware.h>8 D$ y+ w# v& C: R) s% i
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>$ `" ~$ O# W- E3 f1 _
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#undef EDMA3_DEBUG% t$ e" D& q( \* ^! B% w
/*#define EDMA3_DEBUG*/ P9 V X- o$ w" n' Q0 E4 ^
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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... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif8 }0 W/ o7 B N+ B: E
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). N! D( P3 f- u0 S( x+ ]
#define STATIC_SHIFT 3" | a* e) Z% [4 F" I, r
#define TCINTEN_SHIFT 20" e* ?5 `& c' Z4 C. i
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23" m: C( F+ D5 y; u
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static volatile int irqraised1 = 0;* J# k0 Y5 {) C3 I9 H0 }- C3 D
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);6 U; J4 }( e! v
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dma_addr_t dmaphyssrc1 = 0;6 W4 F0 l( o2 C/ Z
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;0 ~" J" ^) ~) j x$ A
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;# t; p+ {; ?) F8 h5 @- y- F# a& h, F
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static int acnt = 512;# v; {2 I% s# P5 g* Z
static int bcnt = 8;1 s1 c4 e, q% j! A7 q f
static int ccnt = 8;- c4 |' } [0 k: \/ P, j8 @
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);$ F7 Z0 I7 B2 h/ k& [4 y
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