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本帖最后由 yyj 于 2018-1-30 11:01 编辑
9 I% d% m& I6 G4 o- [code]EDMA sample test application" F p, Z) R- ]" E$ w l7 }
- /*
5 {7 Q9 M( K* L! I/ A - * edma_test.c5 F) P3 f3 V6 b+ ]
- *" G# z$ ^7 p9 M8 h. \: i) }
- * brief EDMA3 Test Application
# N/ n- _/ l" F& O5 J! L - *0 I6 n( i8 |, b1 R/ r7 T% _
- * This file contains EDMA3 Test code.
$ a0 K' `% S. c - *
0 G+ o4 T% V9 g% q - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE6 }3 |- C, K, t0 X4 _
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT5 v L( q a# ?+ k
- * TO CHANGE.
0 }+ `& U+ }, E+ k5 v - *
5 t6 w4 d! N- K# i: C4 Q - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
9 ?% A, _0 }% _9 u - *4 c3 ]8 j' d, G2 u' [+ q: ]
- * This program is free software; you can redistribute it and/or
, y/ \& y* m9 C6 N; { - * modify it under the terms of the GNU General Public License as: q. K( v; R5 F d) V+ k d
- * published by the Free Software Foundation version 2.
5 ?% b& y0 E1 N. p9 e: N# z8 `7 z - *
4 Q8 E" X+ t7 W - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
5 e, Y- Z E6 r' _, ^& ]2 T - * kind, whether express or implied; without even the implied warranty4 H3 [* g0 |: ?6 I4 j. z# A
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
: H w% `1 S) a0 B& f - * GNU General Public License for more details.4 L: b* n' H0 e% U, E
- */- h5 [3 l& H4 e0 e D
- ( N" w5 l$ m' Y5 t5 F8 i7 a4 X, N
- #include <linux/module.h>
; p: E1 Z; P) r) v7 y4 n$ k% a1 h* j - #include <linux/init.h>
/ M* U5 w) N7 q+ J0 i& z$ j - #include <linux/errno.h>
8 K; {& ]( k- q# s - #include <linux/types.h>
- M& }$ S) K4 L. h6 I( R- F - #include <linux/interrupt.h>
. @; H' ], a- W0 N - #include <asm/io.h>
3 ~% c- P1 R$ K8 l$ Q% h1 a - #include <linux/moduleparam.h>
1 O: f! ~" U( B" ^. G: w - #include <linux/sysctl.h>
# a) X9 N6 s6 ]: c" L" n - #include <linux/mm.h>
1 |2 r; A& e% k$ a* H - #include <linux/dma-mapping.h>: l0 W9 g2 o* \, m" F, [% M
- 6 T; W6 z+ P6 U. A8 h
- #include <mach/memory.h>
( t4 G0 o# M& |; F- s- M/ r - #include <mach/hardware.h>. |( u/ ]! \, l4 q [2 k4 y+ a6 W
- #include <mach/irqs.h>
; n) p8 E2 q! j7 e8 F, c - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
' d0 R5 n1 }' i- c. N( F# P. d- Q - /*#define EDMA3_DEBUG*/
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8 x9 P: a- c9 J7 p/ ` z' |- #ifdef EDMA3_DEBUG, d: b, w) @7 z2 A( C" ?8 c
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( ]- M8 Q3 _; g' m1 [9 Y6 d* Q! e
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
+ \/ D, t7 }8 t5 [" ]1 N - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
) | s8 O4 P1 B4 @ - #else/ h2 b W5 Z$ {( D6 _+ [2 k0 V
- #define DMA_PRINTK( x... ) L* _. l. O* H4 t n; y
- #define DMA_FN_IN
3 \8 u0 r& J# ~. f/ R B; p - #define DMA_FN_OUT7 G, T) h1 L) g0 Y" f
- #endif
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) v' v& s2 Z- L" f, R- #define MAX_DMA_TRANSFER_IN_BYTES (32768)' x: `; |) a; X$ ]# a$ T+ c
- #define STATIC_SHIFT 3
0 A& p# i' B) r- O - #define TCINTEN_SHIFT 20) V& y# b" @- |( T& a( B( q2 ~
- #define ITCINTEN_SHIFT 21' C" q* f' `$ r) |4 f' ^3 G
- #define TCCHEN_SHIFT 22
* a5 R. Q/ h# n( }) M G - #define ITCCHEN_SHIFT 233 D9 o- @) h7 X A* W4 e- B5 |
- - \, r% t0 Y5 E
- static volatile int irqraised1 = 0;2 N0 m/ ?+ |' C$ K, E' L
- static volatile int irqraised2 = 0;
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( Z( D3 q* r' L3 L, U0 v; r- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 ?: ?5 u7 H+ d5 t! I N) ^3 h
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 t7 ?8 W; m8 s5 i7 L: Q+ p
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- I9 Y+ w! ~" a2 Y q
5 i# @2 f2 X t- dma_addr_t dmaphyssrc1 = 0;
0 Q( H6 z0 g/ W" m - dma_addr_t dmaphyssrc2 = 0;
* ~: n6 R% b/ ]" r - dma_addr_t dmaphysdest1 = 0;# ~* ^" O, d% I8 o% K& v) g% x
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
" v6 X& K* u8 z; J1 s - char *dmabufsrc2 = NULL;
2 I) s: j D! D9 L: o$ s. |, ?! C - char *dmabufdest1 = NULL;$ ^, e1 e4 i6 J
- char *dmabufdest2 = NULL;1 U0 I: \8 D/ R5 G5 p
! d# Z# M8 D" m" B- Q3 I; o g- static int acnt = 512;$ N; b: v0 _' q7 F7 b
- static int bcnt = 8;; k0 ]9 m B" G0 E$ S; V* ^
- static int ccnt = 8;
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' q0 b9 |' B6 T& t/ i1 f d- module_param(acnt, int, S_IRUGO);
. D! ~# [+ z6 z' ]2 A4 A - module_param(bcnt, int, S_IRUGO);6 r ]6 k; B. b" D! r( ~' r
- module_param(ccnt, int, S_IRUGO);
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% L+ s) q8 O8 k. k; S+ J: P 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 {/ `5 L J% {' p# \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。8 l7 v5 d# _+ e9 h6 D% C& 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。9 G3 ] Q" N4 n3 [2 F. \- A% o( j% w
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