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本帖最后由 yyj 于 2018-1-30 11:01 编辑 & b. T4 ?- M: I$ S$ i: k5 o
- [code]EDMA sample test application3 O7 C8 l9 p1 n9 M+ P
- /*
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- *1 v( B- g7 [& g7 ^% @. `; Y
- * brief EDMA3 Test Application
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( X. r4 P0 p( m$ |# \ - * This file contains EDMA3 Test code.) s9 {2 B# `( j' y) I5 N
- *+ f5 O" H6 `3 H4 r; t
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
/ m1 e+ c# H& k6 p - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) L$ n. Y2 w2 j* Z, a
- * TO CHANGE.
7 X O4 x1 e$ E2 J, d! Y7 e* D: g - */ O# [4 I5 R& c% r
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
9 w" B% y1 q! ]$ g7 q/ m3 L2 s; t - *
; F0 I4 X+ ]5 A0 K - * This program is free software; you can redistribute it and/or
+ ~# V; X. S. ^4 H& r - * modify it under the terms of the GNU General Public License as
( W. o2 ~4 ~8 O0 F6 s' c - * published by the Free Software Foundation version 2.7 b# ~. S. K, ^( c5 K6 t- _$ v4 M
- *
2 w6 R8 q0 U/ h. A7 r) E - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
7 W) q% F$ f' T3 v& k* L* ` - * kind, whether express or implied; without even the implied warranty
& n3 r2 D! F0 ?" S - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# k5 S$ F' L. C) O+ r
- * GNU General Public License for more details.+ _6 S4 `, A5 m
- */
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4 X H6 P3 P4 {- e. j# n8 s- #include <linux/module.h>& D/ l+ S3 j# a( u/ w) }& i
- #include <linux/init.h>4 {. J0 c* Y3 L& z
- #include <linux/errno.h>2 ^+ {9 n# g. m/ ]7 E
- #include <linux/types.h>
3 o# w: g# [" z - #include <linux/interrupt.h>9 L0 N- J3 F" W* d3 q9 }1 s
- #include <asm/io.h>& R. T6 T8 i7 d! [/ m
- #include <linux/moduleparam.h>
- A3 w7 a e R: O( m - #include <linux/sysctl.h>
6 z+ K: ?; q+ b( \ - #include <linux/mm.h>
3 S2 Z0 n3 T6 o2 c$ O( K% q8 B* E - #include <linux/dma-mapping.h>. i* h1 H4 @; k: X0 j
; |: m g, o6 c) Y4 f4 J& M- #include <mach/memory.h>8 x) R/ m! o! d# s9 c" m: R
- #include <mach/hardware.h>7 ?) B0 e* t+ i( y4 Z) j3 r* `, G
- #include <mach/irqs.h>( Y- k9 i0 l/ N) m3 B8 k' q; r) q0 V
- #include <asm/hardware/edma.h>
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9 F% k' f6 o# H: v+ [ ^- u- #undef EDMA3_DEBUG
" Y( F J& |& Z' F - /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
* L T( N! ?: q5 k8 O f2 h" E7 q - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)2 L4 |* @' _5 S' _
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ i6 D% n% B V: Q0 y6 N& o
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
3 h4 j0 o# }) M& I2 j - #else6 i" f% x5 B1 b* s, R9 I
- #define DMA_PRINTK( x... )
5 \! a* o8 r" M0 H - #define DMA_FN_IN
% t& Y8 I, E2 C: k; t& M2 G - #define DMA_FN_OUT. T/ C6 h3 A* R: R* |
- #endif+ V/ M% m( B% z3 U. _
- 1 ?, t- q: D, g( K9 }+ V8 f
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
" x. V* U7 J, K2 b - #define STATIC_SHIFT 3 s' |6 g8 S8 |( M
- #define TCINTEN_SHIFT 20
% J! n x) @9 `' l3 d0 L$ v) f6 F - #define ITCINTEN_SHIFT 21
6 v1 a8 S H, r# J6 @0 u! S - #define TCCHEN_SHIFT 22
8 d, k% f3 l! d- e; ]1 P. a: D - #define ITCCHEN_SHIFT 232 A: m* v, e9 \* H% u
' y4 Y% \0 B8 ^1 P& x! z f- static volatile int irqraised1 = 0;
7 L9 J: T. P* g8 R - static volatile int irqraised2 = 0;( o" h+ s; K4 i( ]4 K
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 I0 a$ L! ]! z
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
; I) a! n5 s' @( G4 V, ` - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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- dma_addr_t dmaphyssrc1 = 0;
* O$ X& |' [5 @ - dma_addr_t dmaphyssrc2 = 0;
6 S" q- v9 f5 i$ _* | - dma_addr_t dmaphysdest1 = 0;
7 H: Q& n/ Q x - dma_addr_t dmaphysdest2 = 0;: S/ @5 M3 f+ q, ]$ J: h
]$ y) A; Q- P4 q# B+ s8 I- char *dmabufsrc1 = NULL;% c/ d' `; L L5 m* w
- char *dmabufsrc2 = NULL;
4 Q9 w0 D' h" m% t7 r/ U6 @ Y - char *dmabufdest1 = NULL;! @; i+ p2 k h( j x2 z# j
- char *dmabufdest2 = NULL;
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- static int acnt = 512;" o$ [ m9 f% r
- static int bcnt = 8;- e& a* u) D+ L t3 z8 b# ~
- static int ccnt = 8;
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, W+ S! c+ q! V% _# w- module_param(acnt, int, S_IRUGO);
1 t2 ]8 d s. a+ l p3 q - module_param(bcnt, int, S_IRUGO);
0 a" B" o! ?& ]8 e: _& O - module_param(ccnt, int, S_IRUGO);
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+ o# C, S0 p3 d- R 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
4 G9 i# i, E3 U* @5 ~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。- S! c$ O: t; d$ B g( G. l# B
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。# [. v4 T; x& ]- A
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