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' J* T) W; z O5 A/ X
/*6 U3 m+ o% f4 l F7 |
* edma_test.c
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* brief EDMA3 Test Application# W* t3 _! k& y' h4 c1 J8 F
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* This file contains EDMA3 Test code.9 s* V2 v- e* I0 B3 X
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE( m2 O- C6 h: f3 s, v& g& Z
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT% @* R! l% E2 L: h( _( |
* TO CHANGE.) q( e' c+ I* r0 X9 C I$ Q! }
*
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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.
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*" f% O- q0 {0 K8 v) a
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* 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.6 m) \) Z. z0 P/ k0 d
*/
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#include <linux/module.h>3 L" {# {% }: P. v
#include <linux/init.h>+ ^4 `7 E3 {/ W6 b" Q, h% L
#include <linux/errno.h>
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#include <linux/types.h>. g0 ~& D# W: `! ?+ Q
#include <linux/interrupt.h>7 w9 c( l) R% r
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>! H5 I |3 j5 v" Z' l) T8 C
#include <linux/dma-mapping.h>. b. C# I! H5 G* B- ~6 ~ W. J
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#include <mach/memory.h>3 j5 M- U' c' A& R# M- V! O
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>. R8 |0 c! W; j3 M2 C
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG* Z# ~; G3 B2 l( _6 L5 A
#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__)
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#else9 C/ m- D2 G2 W N* O
#define DMA_PRINTK( x... )/ N& p2 A: q+ f. V( n& O* a& l
#define DMA_FN_IN; D4 V, |( `# g! o
#define DMA_FN_OUT3 m# T. h5 K- I
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), v' b$ z1 e' t* n$ B/ Y
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 200 ]( k0 @9 p; q8 c3 k+ w7 C
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22 L5 H; U7 J! K
#define ITCCHEN_SHIFT 23! E- v8 z/ a! h3 o3 C$ R
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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);+ \- O* A& r4 D2 p$ J* F) y' P- l. i
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 \/ x+ I7 o3 L+ w" }% l1 U+ M
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. Y2 n7 v- R4 \+ G+ L; O
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;5 O( U/ Z9 w9 v5 t
dma_addr_t dmaphysdest1 = 0;5 l; e- Z( G h: L+ F4 k& J
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;7 M! \7 ?, D0 k( S x
char *dmabufsrc2 = NULL;% u+ j9 ~* s( N( O7 L2 Y6 s" r% W }9 u
char *dmabufdest1 = NULL;- _ Z- t3 E5 M" w
char *dmabufdest2 = NULL;
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static int acnt = 512;% ~; {; Z# W( v" M. o. E; E; q
static int bcnt = 8;
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static int ccnt = 8;$ z i4 j0 b! x% O! N
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module_param(acnt, int, S_IRUGO);
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动