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 application5 K+ W7 p, n3 U5 `% v1 A0 T0 l
/*% j3 O! w0 M$ q' k/ @ K$ ?: `
* edma_test.c6 p# i4 I) K4 R# k
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* brief EDMA3 Test Application
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*- v3 o" B$ D* R: _# O" N& w& l
* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' u+ j* [' ~; I7 M
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.$ C1 _4 q4 C$ F% `
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; q1 B! ^$ m/ J- _
*
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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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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any% Z. x; e, J; E
* kind, whether express or implied; without even the implied warranty/ Z5 `) @& f. e0 Q5 l" d( b
* 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>) p0 r0 s& a# \/ E( C) a4 S- j2 v
#include <linux/init.h>
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#include <linux/errno.h>& U2 ^. p1 \/ @- g' _6 L
#include <linux/types.h>, q5 R/ Z0 n. o# B& _: r$ i
#include <linux/interrupt.h>8 i z7 W* }3 X+ l- i
#include <asm/io.h>$ c |6 U3 z% R. N" ?; e2 l9 l
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>1 C* Q& ~* F9 r J
#include <linux/dma-mapping.h>
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#include <mach/memory.h>) n* E1 {4 y z' ?/ k. a) Q7 m
#include <mach/hardware.h>0 X8 F( H" L# P$ X1 X+ i, o
#include <mach/irqs.h>2 P! _4 l$ R- `8 u/ g% N# S
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG w5 h5 o, x5 z7 i2 W
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG8 {6 v$ d' f! Z2 Q, N/ m
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 c. @+ v [& W6 _: @1 w
#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__)8 w: x& P- m5 S3 ?9 E) ]- |
#else( k( `5 N. Y# O3 L
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT4 `3 |/ { k V4 X$ H5 K) Z
#endif/ W( t% k* Q* `9 S: {
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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 211 k, O5 W% `; x4 i
#define TCCHEN_SHIFT 223 O# q f; X. u @
#define ITCCHEN_SHIFT 237 Q8 m5 i1 J9 G( x3 r
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static volatile int irqraised1 = 0;2 s& L% _. e( H8 a5 U+ s
static volatile int irqraised2 = 0;' h/ k p; G& T8 `
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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); I. E& }7 e7 @
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' S3 @* [0 j* V0 h; W1 H! ^8 T+ w
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dma_addr_t dmaphyssrc1 = 0;% L* m6 w9 w: r( W; O
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;( R P, J6 x( w* Q1 r
dma_addr_t dmaphysdest2 = 0;" O! s" ]# b/ A* M& {2 y
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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;5 d: u. u f6 [: z/ }
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static int acnt = 512;
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static int bcnt = 8;/ h' @# Y9 ~! q& s( @" ]- ~1 U
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);& M& {# ~1 h7 [( a* W: R! Z
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