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本帖最后由 yyj 于 2018-1-30 11:01 编辑
! ~& C9 E# T; _- [code]EDMA sample test application
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- * edma_test.c; z& K: P) d6 Z- \
- *
5 X! ^2 Q" r3 H. i* M3 X- A8 | - * brief EDMA3 Test Application
3 [, n' E H5 Y2 }* R0 h- z' m - *
/ B; l: E# e( e: o - * This file contains EDMA3 Test code., B0 k8 n7 ]. n) T) Q& C
- */ @! m3 G G, `7 ~ v
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 Y1 m: U3 N# N7 L
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
4 W Q& `: Q/ ^4 ~. }5 f O - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 c ]+ Y& U2 T
- *: N$ G" O8 ^0 o2 V2 f2 U
- * This program is free software; you can redistribute it and/or8 }" J! E: d( F; V& T
- * modify it under the terms of the GNU General Public License as
: V$ G7 ]6 j7 v* {8 \ - * published by the Free Software Foundation version 2.
8 ]3 w6 D; Y9 x5 |- e - *5 N# b/ A$ C" P3 \, p1 U
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
6 G* [) ^# G8 |4 u - * kind, whether express or implied; without even the implied warranty
: `1 B/ C. v. i: A: k# H9 @; R - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- q& K& r' Q" \2 f4 [4 M - * GNU General Public License for more details.
W, {1 l# h1 a& b5 w% e7 B( h - */# E& Z3 ~) l K; R( l0 i$ p6 m
; x. f/ p8 w, A2 f- #include <linux/module.h>0 e9 F! y5 [; k; M4 t
- #include <linux/init.h>0 ?* @. J; p$ e( y% b& T3 \2 }
- #include <linux/errno.h>$ k$ z4 o( [1 m y' I6 J
- #include <linux/types.h>
/ g/ z5 i; j# @ - #include <linux/interrupt.h>
6 c3 H ]2 n+ h4 C - #include <asm/io.h>. f8 G% N {! f! T" {1 s0 `
- #include <linux/moduleparam.h>
0 ?% c2 K# m& ^& D& J - #include <linux/sysctl.h>
* F2 H& D+ ]- H9 f' S4 w. k - #include <linux/mm.h>" ?) M5 B7 W! D
- #include <linux/dma-mapping.h>! J# b% z) W) M8 c) c4 s7 k& M
- 4 s+ B3 |7 v$ \& e; {
- #include <mach/memory.h>5 A' _7 D( j3 @; ?( h% Z# j2 M
- #include <mach/hardware.h>
8 P; t" m: l5 Y - #include <mach/irqs.h>
- k( n* g, A% X# I' R9 | - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG" x( E( b H7 H" Q
- /*#define EDMA3_DEBUG*/
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7 J$ p! i7 e5 D6 _! i2 N- #ifdef EDMA3_DEBUG1 M q. h- r! c/ p8 J: a
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# v+ c. ]: G' T$ Q4 x* p
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ q& D. X$ f3 R# H5 m# n: j( ]: a
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
( `2 I% w+ q# w& v" u% O2 E$ f& A" e$ l - #else
i3 @, |7 X) K6 s* @" Z - #define DMA_PRINTK( x... )
3 l! M- I' v" D9 @ - #define DMA_FN_IN
g$ g, f! ~- G - #define DMA_FN_OUT# V' G& Y" z! T D! W: D5 H) e
- #endif8 t$ j4 I) @: c) x/ Q5 K3 l
- ! r- X2 l* S1 B$ c8 @% ^
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
6 p/ [9 w% Q6 d5 Q- S4 R - #define STATIC_SHIFT 3+ }/ b5 m: _3 j
- #define TCINTEN_SHIFT 200 {8 `: Z4 J6 e+ b$ e
- #define ITCINTEN_SHIFT 21
' ]. Q$ n+ L# C F7 ~/ } - #define TCCHEN_SHIFT 22* v; q, W3 D3 `0 u3 }) O* p
- #define ITCCHEN_SHIFT 23. \5 k. A; `9 j8 c. m- `
- 4 f3 S: p$ v( g8 t% c
- static volatile int irqraised1 = 0;
: Y3 O6 Y, k) D2 R - static volatile int irqraised2 = 0; I5 F& H$ d ^7 S2 n6 }4 ^3 J
) s* P) M1 L: j8 ?3 [- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
/ B% ~+ z3 A! ~3 \0 {1 C5 |3 s - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
; m- A- ~6 P$ X; Q4 u5 D - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ A: `; e4 C+ y; u
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- dma_addr_t dmaphyssrc1 = 0;( {* D& x7 k4 d* _2 m; C
- dma_addr_t dmaphyssrc2 = 0;
+ q4 F" C. ^9 ~. i! W) C - dma_addr_t dmaphysdest1 = 0;
$ W% m( x" D; U - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
9 s* |: _1 }8 \. \ - char *dmabufsrc2 = NULL;
0 ~: |0 |" W9 ?4 B2 j' [' a$ Q) B - char *dmabufdest1 = NULL;
' x9 C4 G. l8 i - char *dmabufdest2 = NULL;
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1 O$ p) l5 e* r5 J2 c% e, L! r. v5 t- static int acnt = 512;
- L9 `% a# s3 h. y8 H - static int bcnt = 8;
/ k. x& s/ q' L6 z# v) E% W - static int ccnt = 8;, E# r; W5 e% z# Z
8 [/ s4 F8 F! D* J- module_param(acnt, int, S_IRUGO);
0 b; t4 r& C$ k$ u9 H" Y# u7 I - module_param(bcnt, int, S_IRUGO);
_7 F T- t5 i - module_param(ccnt, int, S_IRUGO);
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+ |0 K; I" ~; |+ z 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
5 ]3 L7 w' s2 }+ i& uarm-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。/ S; B9 h) f! _8 h i; u5 s
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。/ N3 o" C5 f. q, {/ o
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