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 application4 X0 a. n( p8 u
/*2 ]3 W" c X0 i" S7 `2 p {" Y* `
* edma_test.c" \' @3 v. ~- X; _2 ]
*
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* brief EDMA3 Test Application6 T8 M6 J6 y/ q2 X
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* This file contains EDMA3 Test code. W( a% p. ^) g) A: M5 i
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE v4 [( G: O. @( r/ T& Y& B
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! c& D# \+ H& `
* TO CHANGE.
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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) Z6 K } h) ^* L9 x. ]3 ^6 f
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.2 i) Z- X- l' Q" k* [) O. J% L
*
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* 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- c! S0 ?- i C- q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! Z9 I+ [* r' W% d/ K( f6 w
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>4 c3 \9 {4 ]: ^9 I, |6 a7 s: K
#include <linux/types.h>! v P2 ]$ j) _" |" J
#include <linux/interrupt.h>$ A! g c `; s! U9 t3 W
#include <asm/io.h>
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#include <linux/moduleparam.h>& g0 S( N+ I1 O( {, q# ]7 t
#include <linux/sysctl.h> r/ D) o- t4 b9 R. L3 V, Q6 R; v
#include <linux/mm.h>: y% C6 T3 ]/ q# ?. m6 q
#include <linux/dma-mapping.h>" h/ o% B# [7 Q% }! A
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>' L M/ v% z! c; b! c# d+ U
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/( R3 v% W& e& c t
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# f7 Q Y& j# r7 O1 [# Y3 f
#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__)' t8 f* o% D y0 B; T7 S# V0 |
#else
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#define DMA_PRINTK( x... )+ U9 d: }2 x/ w9 l3 D2 w
#define DMA_FN_IN
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#define DMA_FN_OUT+ N# ]# z% |+ y9 \1 w7 x
#endif+ r; Y" A1 |# d9 p% E0 j
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( g8 L& g: B. e9 C
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 206 ~8 z4 |% d2 k8 N
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22' f8 j/ f, C/ V# ^8 X/ {; K
#define ITCCHEN_SHIFT 231 v* h& n& N3 K" m' M% E6 p
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static volatile int irqraised1 = 0;3 {$ V# \: p5 J% ~0 _- z
static volatile int irqraised2 = 0;/ \: I0 V: ^/ F9 x
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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);
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dma_addr_t dmaphyssrc1 = 0;8 p+ R0 X& o- a; I9 N0 Y
dma_addr_t dmaphyssrc2 = 0;7 s1 `7 T- Q Z+ K# r
dma_addr_t dmaphysdest1 = 0;' K, k# S9 m! o6 i1 @) |1 j
dma_addr_t dmaphysdest2 = 0;9 m! `% \ w n5 }. u3 L. ]
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char *dmabufsrc1 = NULL;, A! N6 j1 S" P4 V
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;% N" L2 U% X0 K
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static int acnt = 512;
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static int bcnt = 8;! U+ o- F! R4 h# m: }
static int ccnt = 8;9 V3 A* {- ]7 e, F
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);2 Z9 H2 b9 @1 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