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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* brief EDMA3 Test Application# Y) S/ v2 m! E1 j
*
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* This file contains EDMA3 Test code.) I4 Z3 P3 ?) D. L8 Y6 H
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: E& N: g! Q+ V, p: P
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT7 ~7 ?- a- H5 H# l3 `
* TO CHANGE.# _) m4 z7 u0 G) d4 E! 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.$ z4 w- m7 f$ t* q
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 G! D+ r7 z6 r* U$ [
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) @0 B1 L3 h: i. V7 t& Y' h
* GNU General Public License for more details." n; H" e# _! \8 J* Z* M3 O: ~9 E3 d
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h> E% x2 _+ o4 { _/ \1 D
#include <linux/types.h>2 O% j7 [4 @1 @% O, Q& J
#include <linux/interrupt.h>+ J) H1 g4 T5 D: i! G8 z, h
#include <asm/io.h>
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#include <linux/moduleparam.h>! y5 i( Y) T" C# @3 w. A6 S/ N1 ~
#include <linux/sysctl.h>
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#include <linux/mm.h>! G$ W5 W7 n: ?8 C* y
#include <linux/dma-mapping.h>8 k, T( I) `" ~7 }
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>% S) u8 @* H9 r8 s2 I. J' l+ o
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG) W' `% P7 r4 A& ], E7 n
/*#define EDMA3_DEBUG*// Z1 `+ ~- e3 I' i
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#ifdef EDMA3_DEBUG( M1 X# a3 \( r l( J: O
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
#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__)0 j/ [# d- w$ Q7 C6 J. ]. ]7 a
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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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#endif( V E* m3 k. v, u8 n% y
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3: N* y& X+ F' q1 @) S7 a
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21' w" t7 |8 N1 w* L1 z
#define TCCHEN_SHIFT 221 i4 N- ` [/ g, u5 z6 g
#define ITCCHEN_SHIFT 23; B* T$ B! n8 ~8 t+ m' x
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static volatile int irqraised1 = 0;. k3 Y u+ y5 l/ N2 M2 s) `! _; s
static volatile int irqraised2 = 0;: R L1 q$ [& S* p, X0 d
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' I) a* E4 G: v- |) v- T" p F
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 u# L1 M3 u, J6 B
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); i. `7 b% D: P# y
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dma_addr_t dmaphyssrc1 = 0;" u1 {! ~$ G; l
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;- T0 s2 K5 M' S5 L1 o
dma_addr_t dmaphysdest2 = 0;
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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;1 B' \ ]% y9 c. f
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static int acnt = 512; t, O1 |$ v t: D
static int bcnt = 8;6 K1 E; a0 z: H& d% P0 i% U
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);% j% k! W% z" S# 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