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本帖最后由 yyj 于 2018-1-30 11:01 编辑
& a- G5 p2 _( y( E% N/ F- [code]EDMA sample test application' a% j4 W! W/ p: P0 }( D+ `/ K5 V
- /*
0 b, w9 h& r# @* i# j& e - * edma_test.c# Z! Z' W! Y$ d/ A2 ?2 j1 l
- *
" l' b/ ~5 P! m0 L% H - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.! K3 Q, K: M* r, X* a* W/ [) {
- *
* W8 i' Q# @& G5 V/ q - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, h# M. u9 p* _( {6 g
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT8 a: W2 R- F7 Q/ d6 X3 I
- * TO CHANGE.9 S' k0 {; H' z- {" P3 `0 G
- *& G# Y2 x: H/ f# q, O
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 n4 W4 l: w: [: Q/ k
- *
% [& U; r- ^6 n+ S' x8 J" w3 I1 o( ` - * This program is free software; you can redistribute it and/or
' ~ }9 m! H* V, m - * modify it under the terms of the GNU General Public License as
0 V' h, p u& @3 C7 h - * published by the Free Software Foundation version 2.9 A% p7 Y X/ J# z) e8 f
- *) }% v0 i# U+ h* r( ~; e1 m
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
, `7 F7 Y, ^& F+ n) x) g - * kind, whether express or implied; without even the implied warranty, ~, ^9 M' f' x
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ ?5 I" `( X! v+ B- m
- * GNU General Public License for more details.
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& Z. d7 N4 N* Z8 P: T- #include <linux/module.h>* W A: u5 `/ w2 T7 Z2 ~
- #include <linux/init.h>9 I0 u' c6 r) |; o
- #include <linux/errno.h>3 O$ F+ V' L( ^4 _: j
- #include <linux/types.h>0 ^" Y3 U6 E6 e* w
- #include <linux/interrupt.h>
! k" ^8 a3 f* E* L - #include <asm/io.h>
# K, V |/ O4 j9 f+ I5 c, p - #include <linux/moduleparam.h>
: S8 ~9 L1 E8 f - #include <linux/sysctl.h>
8 j7 M% h: m; Z3 Z' E6 G) _ - #include <linux/mm.h>
3 J( S3 `# x3 }: M - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>" j- f7 T0 K# \* j
- #include <mach/hardware.h>; O& A! M9 P! |7 v
- #include <mach/irqs.h>
1 u8 e9 t9 y6 V* `2 U8 H: i - #include <asm/hardware/edma.h>* [1 X' d+ c7 ?) s, y
0 |- e. y+ o0 v2 c# e! v- \* Y3 _- #undef EDMA3_DEBUG6 L* H i7 f0 V4 n
- /*#define EDMA3_DEBUG*/( R W4 ?9 V7 [0 s/ \7 s& x% a
- 6 ]6 `" H( W) L8 e5 A
- #ifdef EDMA3_DEBUG; Z6 E5 U, E c3 x! z
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
6 G* T) |/ C- O - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)- x/ [" U' J) o1 w+ w0 }
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)8 @) U& ?. `7 k) @; U4 s
- #else8 x4 S; v9 l! G, [/ K
- #define DMA_PRINTK( x... )
W6 F# L: N' u P( d - #define DMA_FN_IN3 K* N% K/ n* E4 Z2 m
- #define DMA_FN_OUT3 G& `' W9 c/ v9 u: o
- #endif8 a. \; ~; q$ u/ `
% e* k: e( Y% n' z4 x4 R8 _ Z; t- #define MAX_DMA_TRANSFER_IN_BYTES (32768)$ W9 y+ G2 F, K& ?% @/ @
- #define STATIC_SHIFT 3
6 B d0 s: }) ~! I - #define TCINTEN_SHIFT 20
7 f4 b l# v1 e9 P9 [3 v - #define ITCINTEN_SHIFT 21
4 n }8 x& a' f# p, x1 ]7 v$ H" p) \ - #define TCCHEN_SHIFT 22, e4 [9 _7 c+ G& V6 n6 I2 [
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;# A4 l, r5 \& A5 p
- static volatile int irqraised2 = 0;
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' q3 P) G. h# U/ e- H4 a2 z' c- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- ?" M8 S# a0 p5 s; ~/ Z
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ {3 ]- X8 {; Y
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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( X6 v0 ~6 j# U9 `8 T) B- dma_addr_t dmaphyssrc1 = 0; | _4 j' W# l8 Z% w
- dma_addr_t dmaphyssrc2 = 0;0 j: S* W! b$ l: l# h4 U
- dma_addr_t dmaphysdest1 = 0;
2 v3 a# l, R% Y; j. W* v - dma_addr_t dmaphysdest2 = 0;) s- R2 e8 S- s; K; w2 W2 n$ ?
- 1 e+ r5 `9 u" c( I
- char *dmabufsrc1 = NULL;
: `# K) z5 L- o+ ~ - char *dmabufsrc2 = NULL;
% u7 w( S6 ? \+ e - char *dmabufdest1 = NULL;1 Y* Q8 I @, Y$ }
- char *dmabufdest2 = NULL;& l* _" y: _" ^$ k. s" q
" P0 O/ Q- b3 s6 L- static int acnt = 512;
: [$ ]3 J6 s$ Q4 e+ }0 {. R - static int bcnt = 8;6 s5 h) H8 B' Y( [0 p- k/ D$ R" g
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);" [3 V( T1 i1 K! t
- module_param(bcnt, int, S_IRUGO);# @( M" l5 h9 K5 ?: W
- module_param(ccnt, int, S_IRUGO);
复制代码 & o) a; E4 F: n
1 X d( Q7 Q- R0 [) v 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 q/ K- M+ C' D$ F, i- _
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。; H) }, v% ~9 X; x5 H n
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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