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; Z0 C% @! \5 P( ]5 I- g9 ~% q: E
/*
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* edma_test.c
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* brief EDMA3 Test Application3 v0 E, {* R( d2 l5 _
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* This file contains EDMA3 Test code./ m2 Q' Q6 W. Y/ o
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT/ ?! z; s" A. }1 R
* TO CHANGE.% G7 T4 d, w& q5 w, y3 D
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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
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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.% s" T! O# c6 I# x% g
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 o9 p% B8 |3 O
* kind, whether express or implied; without even the implied warranty5 ^9 T% I, Y: Y$ Y$ G- n' F
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* U+ I- s) M- t1 N
* GNU General Public License for more details." d9 r. }+ X& t/ k' O
*/ R* j' H+ s# y0 [1 Z t
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#include <linux/module.h> o/ c7 n1 I" T* G7 i4 t) I
#include <linux/init.h>
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#include <linux/errno.h>3 g) X7 h3 Z) A
#include <linux/types.h>8 v- k1 ^9 |7 w' [, q% ~, j
#include <linux/interrupt.h>
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#include <asm/io.h>1 C% \1 a( [: @# i+ I
#include <linux/moduleparam.h>6 e, ^0 {2 y+ m# d- b- w; ^
#include <linux/sysctl.h>
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#include <linux/mm.h>. G1 n# k; r* a4 [0 q6 E5 [
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>; x- @1 S2 H, }) _
#include <mach/irqs.h>9 R( R* F" |' R# o; y
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG k9 z9 F9 a2 t/ W, Y2 e0 m
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG) ^' r) ]0 L+ D) v/ j; @
#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__)- t3 q7 b( i$ K# u ^" [+ u I* V3 U3 l* V
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)3 ^3 g2 _9 E" c% h" k) q1 |1 }
#else
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#define DMA_PRINTK( x... )* ]" v$ Y" d" C2 Y2 |/ J' g; p
#define DMA_FN_IN! u! I2 x3 k# b9 l% R
#define DMA_FN_OUT% B6 A$ F, s: c' [- w; s) A# m
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( u T0 r3 `1 t; r, G4 j6 k
#define STATIC_SHIFT 3) X8 F& K" U1 W6 d n
#define TCINTEN_SHIFT 20& b, `+ Z5 d* x. {- }( ~( D( |
#define ITCINTEN_SHIFT 21& n2 m1 z- v, s8 |# }! b( M
#define TCCHEN_SHIFT 22' a* h* S2 ~$ _: p. j5 y2 J# v
#define ITCCHEN_SHIFT 232 ]& M/ A" ^+ A# Q
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static volatile int irqraised1 = 0;
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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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 S' Q* X& g; i/ e
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% k. r; G; {" M1 e# C& ^
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;# R: m. v5 I6 I% g/ c
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;4 e0 i( Z0 G2 h; N
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char *dmabufsrc1 = NULL;' Y" z8 \" Z6 z% F6 |
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;$ J# w& Z* A x5 m1 Z
char *dmabufdest2 = NULL;
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static int acnt = 512;1 E1 h7 n+ l- L/ @5 W3 {' _
static int bcnt = 8;, Q, d" q3 L5 u
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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