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本帖最后由 yyj 于 2018-1-30 11:01 编辑
* @7 R c( z3 N7 _9 S1 R( x: |- [code]EDMA sample test application! }4 p2 }8 h$ A! b2 H; o
- /*
5 U3 v* b& C; C. M% B* n - * edma_test.c
z* p R4 t/ j# s, G - *
3 h$ b' a& `1 [# W- w; j1 o - * brief EDMA3 Test Application
X5 l/ J5 J. P3 D - *
' x* U# r- d$ S# e" r - * This file contains EDMA3 Test code.
( s) h* v0 j) O2 l - *
& H) W# ]1 ]# `1 ?: x5 ` - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
/ S% b4 o* n8 _% O" b3 l - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 e1 C- X# Z$ _0 P) z4 s
- * TO CHANGE.
9 Y* v9 |+ Z4 @$ r - *
* K" G( d ]+ @ - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ i3 c! g. b7 M2 Q
- *
' q/ D9 n% p6 z! f4 ?! p - * This program is free software; you can redistribute it and/or+ A5 ^9 g8 ~. f K- |) E- y
- * modify it under the terms of the GNU General Public License as6 k; i J8 N8 d/ z
- * published by the Free Software Foundation version 2.
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4 Q( C$ K8 c0 j1 E3 h - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
: Q) m1 k/ @- g1 e4 I) o$ X) | - * kind, whether express or implied; without even the implied warranty
2 \# o+ [) G0 }, a: r7 K0 I - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
& @4 W( F0 J5 R% ^ - * GNU General Public License for more details.
4 B# @; D) k9 a - */( ^( e: H }1 m) D+ T: N
2 b- A4 V9 ~3 @6 {9 m) d) J- #include <linux/module.h>
! {9 }% X* q8 g( c. v% d - #include <linux/init.h>7 e4 M2 I- A" W* H
- #include <linux/errno.h>
6 E3 f$ F# G% k - #include <linux/types.h>
" Z1 L$ B# Y+ O+ a2 K# R2 o - #include <linux/interrupt.h>1 i% R' } v7 L S9 u4 R
- #include <asm/io.h># _" N F$ a' F$ F
- #include <linux/moduleparam.h>
. |; c% |! b( ?+ l0 q - #include <linux/sysctl.h>+ g0 W9 g. n$ d2 j
- #include <linux/mm.h>+ O, H# ^3 e5 P& a3 o T5 T0 K
- #include <linux/dma-mapping.h>6 L/ J) q( f% {& ?# [( I' f
) P$ J% C* x G& s0 z- #include <mach/memory.h>
" k5 K9 D- I% A6 H - #include <mach/hardware.h>
( t: [6 ]5 y0 n- Q5 T+ q - #include <mach/irqs.h>; q7 O" o5 I3 _8 ?: J" M! @
- #include <asm/hardware/edma.h>
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) P# ^9 b% k; o; L4 }0 I3 n- #undef EDMA3_DEBUG
4 z& F% }0 ?; Z U: ` - /*#define EDMA3_DEBUG*/% P. Z; ~) w; h! [
- & m$ I2 `# `2 R: [6 |( p- D
- #ifdef EDMA3_DEBUG
+ \9 ?* W v# t8 ~+ y+ N) L - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
$ c8 Q( t" \: |: B( x8 ]8 k - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# r; j+ J/ [ G1 V$ P/ V
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)) a3 `3 B; {5 K8 b. C" x
- #else6 A8 Y) p1 c' \: J8 o
- #define DMA_PRINTK( x... )
3 {+ {2 x) D4 E) ]1 E - #define DMA_FN_IN0 a) I+ v# i Z. c: I, e4 p
- #define DMA_FN_OUT/ z1 s: W! E! X2 D( M! A" I, u
- #endif" c2 V1 [* I& f) }& e
- ' Z# u" q1 x _+ a
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
% _8 M' e, E W$ V8 O" | - #define STATIC_SHIFT 3
3 [9 v+ q& ]& }( ]/ R5 D, l - #define TCINTEN_SHIFT 204 n& b( n% W9 h+ L2 Z/ o
- #define ITCINTEN_SHIFT 21
E" H2 ~& n# A/ i2 l! W - #define TCCHEN_SHIFT 22" t* Y2 @, P& J9 e$ y" B* u9 Z
- #define ITCCHEN_SHIFT 23$ Y' t9 A. b* d N
- # m5 H- M0 O% F/ D
- static volatile int irqraised1 = 0;; ?9 U6 P- X r9 ^
- 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);6 e2 B2 i& Y0 P$ Q& Q
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 L0 N1 x. B! E9 w3 q/ o" ]& m
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) S3 z! _- m+ f3 B5 i# G
- + D Q' W3 f% e. e2 f- |
- dma_addr_t dmaphyssrc1 = 0;
* O w% \- e; X5 q - dma_addr_t dmaphyssrc2 = 0;
( O% u, j) ^9 o8 A+ ?2 U - dma_addr_t dmaphysdest1 = 0;# B9 d) @, R! ^ X
- dma_addr_t dmaphysdest2 = 0;
0 P7 C$ `$ @) N; Z9 t& h
$ b7 h: q) h6 ^! _" k$ @7 K' ~8 u& z: Y- char *dmabufsrc1 = NULL;1 \* i1 M( T$ o) j8 V+ L% e5 T7 a
- char *dmabufsrc2 = NULL;
. S5 T) ]) |% U9 x - char *dmabufdest1 = NULL;
2 [+ ~% V, h* E3 n - char *dmabufdest2 = NULL;0 @" K/ r1 m) O: C9 U
# l$ I+ t* U4 }- static int acnt = 512;
d- p5 N8 `& g, ~8 O - static int bcnt = 8;% y3 I7 z& F; I/ Y/ p, e _; T
- static int ccnt = 8;! n% g; e9 U& H1 G4 M7 w' }
- * A( T& Q$ U* E! j5 Z5 q
- module_param(acnt, int, S_IRUGO);6 ~- h$ w6 k8 n/ K
- module_param(bcnt, int, S_IRUGO);3 L3 p8 n2 Z6 ~! O( ], @
- module_param(ccnt, int, S_IRUGO);
复制代码
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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
" ?# I, |- D f" w5 garm-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。
" O, p# k3 F1 {: B. _- H 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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