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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/** z* V" t, m7 i2 u. J0 A
* edma_test.c
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*
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* brief EDMA3 Test Application7 q r4 q1 `2 ]2 e
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* This file contains EDMA3 Test code.' B* L. ~5 K! P! v0 `) M
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE M7 {, s0 r+ x. u% r ^+ B# v* m
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT D- g; }7 M. _* M+ v% p! q- D
* TO CHANGE.$ p$ Y8 q k. c6 l: j4 X
*- o# U$ ~7 Z4 d) ?+ |8 V+ z& g4 r
* 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 as9 X: Q' c* F! ]* A( D
* published by the Free Software Foundation version 2.
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*% e |1 G4 b8 p G3 V1 L, _
* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 d9 Y2 E/ I+ i3 z* i! J
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the C3 P* ~: o7 @. T; G8 R+ `
* GNU General Public License for more details.+ l8 I1 S# G- a! v
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>; ^' ^" k+ v m
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>5 v' {8 G* m. t' J
#include <linux/sysctl.h>
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#include <linux/mm.h> {8 l o4 D& r$ q7 n
#include <linux/dma-mapping.h>/ N' ?/ N) d- a( y
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#include <mach/memory.h>" y* r2 W6 P2 v# k
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>. a5 W$ v3 h/ q9 }4 ^% t8 o4 q4 e
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#undef EDMA3_DEBUG# p) X: M. U) b* H# \
/*#define EDMA3_DEBUG*/& h$ t) W6 z: J: Z0 G
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#ifdef EDMA3_DEBUG
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#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__)7 B4 j% c/ w, u! i( X% u) i
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else9 q w' A& F; j$ W& M3 f# Z" d
#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 c: c- z: _5 Q$ W' R
#define DMA_FN_OUT+ W% r" K2 j; A% M% ]. B
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)9 a) S2 J0 ]& Z# p! Z) W+ x. M
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;* i8 _) D3 D# z
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);, y1 [: N! `7 a* q+ s3 k
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. \0 ]4 w* |9 F# z3 C
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" ]) U$ q& q9 V. n3 N: `0 k& o
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dma_addr_t dmaphyssrc1 = 0;1 J, B% L+ f) Z2 k+ f# b# W# Z3 [, b
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL; v- ^ I$ o/ Q7 [/ o
char *dmabufdest1 = NULL;) S5 ?6 q0 d& _. [
char *dmabufdest2 = NULL;
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static int acnt = 512;3 T8 J) P. {1 t* ~/ B! Z6 d
static int bcnt = 8;" H `4 n+ K) V( {* b
static int ccnt = 8;9 T+ C7 U; ]9 |) o
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module_param(acnt, int, S_IRUGO);! C! ~# i3 l* a6 A1 ], K
module_param(bcnt, int, S_IRUGO);; }3 D$ j) Y+ Y) z' k
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