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, f! J; w0 Z' c8 G" o/ k) |2 ]
/*3 r* ~( s S/ l# a6 q/ v
* edma_test.c5 c( i1 w2 F5 n
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* brief EDMA3 Test Application
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*
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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& j) O5 O: G ~6 r
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.- Y; E i. J# e* B: q+ \+ P
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" }0 {" H: ~+ Q. f R
*
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* This program is free software; you can redistribute it and/or/ Q- w; Z8 q/ E4 @. I2 f* \6 P
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.1 h, L- v b* e3 h- G( p7 W
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any& F4 E( X7 v/ j! F2 M/ O" O" h
* kind, whether express or implied; without even the implied warranty, T' ]' j8 Y m# ~- }* M1 j9 D
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& o/ O0 L4 P8 e8 y) }
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>3 l! V7 x* Y6 ?% |
#include <linux/errno.h>
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#include <linux/types.h>1 o# N: v$ a) ~8 V5 k
#include <linux/interrupt.h>
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#include <asm/io.h>5 @) x; Z9 B6 I6 t2 C
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>4 d _% d' _. n/ e
#include <linux/dma-mapping.h>$ s3 q5 Q, a0 V0 i
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#include <mach/memory.h>) D6 w$ D% L: J$ h. x. y3 X! P
#include <mach/hardware.h>) f/ H1 ^! ]& d- d" c, B" C( Y8 X
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/8 l5 n6 ?& t- Q* }: Y, r0 A
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#ifdef EDMA3_DEBUG. d9 Y& A: E2 x& q% L) Y8 }
#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/ F; F& u* [; j) n; I5 i
#define DMA_PRINTK( x... ) I( ~# w5 A9 L! M- u
#define DMA_FN_IN
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#define DMA_FN_OUT: I. ]6 O7 h T5 r* e3 |( `9 E
#endif( M8 n3 e3 i( A( H
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 35 ^' g0 R- ~+ ^
#define TCINTEN_SHIFT 200 ^$ O% u9 I; }; ` h9 j$ c7 Z3 s
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 235 C" u0 c2 r/ @+ x" p4 J! N
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static volatile int irqraised1 = 0;6 K$ w3 ~7 \2 q/ a
static volatile int irqraised2 = 0;0 ~$ p! b. K' I6 u. @7 Q& p
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- p9 U- _0 i+ [& l, A
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ D2 v) U/ T' b$ {$ B9 Y4 Z
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;' b2 T5 d7 p, [2 E0 |+ H
dma_addr_t dmaphyssrc2 = 0;7 {+ k( J' ~" a7 s( _$ T1 E
dma_addr_t dmaphysdest1 = 0;, O% U- z6 ]% ^$ E. }
dma_addr_t dmaphysdest2 = 0; g& N% t. F! _ K) Q) W
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char *dmabufsrc1 = NULL;3 b7 v) p! ^. P5 d
char *dmabufsrc2 = NULL;0 R b% g1 D7 d" {) i% _9 g
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;2 q9 _% e5 I$ a1 j4 T1 q
static int bcnt = 8;# J; V8 f+ ?( ?- l2 h z; h! I3 a; m
static int ccnt = 8;7 T: Z$ S$ R# V9 a0 b. v/ X
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module_param(acnt, int, S_IRUGO);# i' U4 A1 ^. J7 o+ Y
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