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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/*! k. j1 @$ U, a5 N0 i. D
* edma_test.c* J4 y- U$ ^% ^' I2 z# x; b
*
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* brief EDMA3 Test Application3 L" @/ ~! e w* u' ^( X
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* This file contains EDMA3 Test code.0 Y8 V8 P) S4 B
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE i, j) x2 z" n- Q) k
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE., Y6 O6 {2 x+ E: m! s: _
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/1 f. a1 | q4 x- Q: H! s
*$ A: F9 q- I1 n2 z
* 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 as9 F! c; ?9 Y7 B9 ]
* published by the Free Software Foundation version 2.7 X3 X4 c* r3 n7 a7 u
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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
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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.) H5 E* d, S; ?( M# x8 `
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#include <linux/module.h>2 b4 F' S3 B- y5 F6 U
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>- x: r* r z! ~7 W* a& ]; E+ m4 l
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>: P c% E; H' s! a( w
#include <linux/sysctl.h>
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#include <linux/mm.h>" ?0 F5 W! n$ |3 A" @* u2 t
#include <linux/dma-mapping.h>
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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* j$ Y; E/ R6 U. w3 R
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG, O+ w- x4 |# B4 O$ D; U$ X
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ B' q v: _& ?+ X; w, A
#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( P+ w8 w' n/ G' |) T6 }
#define DMA_PRINTK( x... )" l( Y }- C" d+ a5 \9 f4 o4 Y
#define DMA_FN_IN
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#define DMA_FN_OUT7 x, Q. `+ N+ n5 ?
#endif/ e# O3 H- A9 M. n) F; d8 q
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3) M) r; t2 v9 Q; ]; }% \
#define TCINTEN_SHIFT 205 i% M v( G: C4 \# G* q7 E0 j
#define ITCINTEN_SHIFT 21! s" N/ V5 P# C/ N- B
#define TCCHEN_SHIFT 22, {8 B0 |+ i% i& Q* i
#define ITCCHEN_SHIFT 231 t3 @1 M; f2 G- s
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static volatile int irqraised1 = 0;6 H+ L: m7 o# x+ S/ }. i
static volatile int irqraised2 = 0;' M. c9 C; S# [3 G' i0 o
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 H2 V5 a8 |8 d1 `$ C5 D
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); e [: m; y2 ?3 s
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dma_addr_t dmaphyssrc1 = 0;3 z/ H- Z) d# e
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;3 y* [8 S8 T1 [# K# F: H9 p
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;& D/ I$ F) ]; h+ K
char *dmabufdest1 = NULL;7 d" n) n0 {6 |$ \ T' c
char *dmabufdest2 = NULL;
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static int acnt = 512;& ` x- h& Z# X$ Q
static int bcnt = 8;. q J: q3 r/ S- V1 G! c- v0 _
static int ccnt = 8;2 b; ~* s2 M, S) J* f' y
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);. }5 u- f( b2 o' w
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