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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/*' @/ d2 b- r) G
* edma_test.c
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*
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* brief EDMA3 Test Application7 l5 Y }+ x- a% |# O) ~1 R( K
*
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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 BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT( B9 n$ l' j F# J3 B
* TO CHANGE.8 s! k( a) m. a3 k. }: V/ K
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*7 V* w$ W6 H0 @& S& |- t# i1 Y! }
* This program is free software; you can redistribute it and/or5 H+ y4 t3 J: q
* modify it under the terms of the GNU General Public License as k8 ~4 i( f. s" \2 d0 Z
* published by the Free Software Foundation version 2.
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*8 ?) @& @5 q; ^/ _" _0 e
* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 }7 [2 ?( b% J$ ^
* kind, whether express or implied; without even the implied warranty" z* R2 e' e3 |8 @6 N
* 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>3 C- H7 B1 X1 L, P$ Q+ B" G7 q
#include <linux/errno.h>
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#include <linux/types.h>! z& K" H \( A# h6 G0 r. Q
#include <linux/interrupt.h>
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#include <asm/io.h>1 ]+ x. {- C- B# g) z3 ^
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>: d c+ o7 e2 }6 A4 B* |2 m# ^1 M
#include <linux/mm.h>
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#include <linux/dma-mapping.h>: T2 ~2 K% Z6 V0 Q
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>% o9 d8 l! S( N6 m+ d8 L0 _
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG, J' y5 d5 k3 j! I
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)0 T, S* C0 W; g# Q! @; t: C
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)( [! _* h) h0 p2 R* S! j# A+ N
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)- R5 L! d& E( Y7 r
#else
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#define DMA_PRINTK( x... )! [1 `8 Z+ X+ L/ }+ }) U
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 228 p e- m# e1 f: U9 B- S
#define ITCCHEN_SHIFT 23! Z4 Z, _% q: O& _
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static volatile int irqraised1 = 0;7 p x% w) j* u: G1 V) f
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);% F( Q& R9 g% {
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);( |. J+ E( n3 Z1 w5 D
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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;5 \# G3 k( Q( v6 n, K
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;* F9 p) q7 }2 Z' y z
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;6 T5 ~( ]' ^0 U) y) S) A8 G
char *dmabufdest2 = NULL;
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static int acnt = 512;6 Y% t8 W) b7 G! @; J, _
static int bcnt = 8;
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static int ccnt = 8;2 H4 E& U0 M: D
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);3 b. F, b3 G+ D! I- I; ?
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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