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本帖最后由 yyj 于 2018-1-30 11:01 编辑 7 t$ j2 i% A* y; `& F
- [code]EDMA sample test application
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- * edma_test.c/ D+ N1 G$ x3 y1 C( p1 ~
- *
$ b# b; D3 Z" X7 O! J. V0 l3 K% Z2 V - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ h0 t' S* W Q" O( C( P
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT- N- R, [; Q" V8 [$ \) I# a
- * TO CHANGE.- H" X+ n% \! a j' Y
- *. s7 o$ j4 {) z6 r& y8 G0 c
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 t/ D0 [& t+ _( b' i0 x2 @
- *: x/ ^! d! }) ~+ \3 J
- * This program is free software; you can redistribute it and/or. ~( U3 a7 N7 i* ]. T
- * modify it under the terms of the GNU General Public License as
4 ]5 X# f' r. c) T$ b4 h6 z - * published by the Free Software Foundation version 2.7 Z# F. @; |! U
- *: L$ g' g7 o% ~4 q, n) E
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any8 y: U$ ?* S$ ^1 Q: ] r
- * kind, whether express or implied; without even the implied warranty
! U& k% m' i0 b) _- m+ { - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 i2 O" k2 o+ U3 H0 A- o' x/ d0 O
- * GNU General Public License for more details.; ?( t; Z3 |8 c5 _
- */1 p9 o5 i: _. A0 ?) I- s
( l- }* p }6 f1 b# K- #include <linux/module.h>
; C$ v9 J& J* D% L/ n7 K; g - #include <linux/init.h>' r/ h0 W4 X( R5 S, I* d# m, M
- #include <linux/errno.h>
+ _7 R. D& f2 m! _ - #include <linux/types.h>* }, e( U0 ?' f) I$ d# a8 e
- #include <linux/interrupt.h>9 s( _ i7 e* O5 R z+ i: R
- #include <asm/io.h>
8 P0 c- j* h$ _9 K4 D4 @1 ?, e - #include <linux/moduleparam.h>( o# ?5 p3 R4 K6 n- \3 b4 b& I) b
- #include <linux/sysctl.h>
$ p! q8 N5 {( Z0 J - #include <linux/mm.h>8 r7 i3 r5 a( \+ y f
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
t% ^! x& p6 j+ O% r- q& A$ D& y r - #include <mach/hardware.h>/ r- D' t* s: d8 y7 i' W
- #include <mach/irqs.h>
- n! q4 f/ J/ i, |. @( X - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG. g8 l/ m& V8 [' `
- /*#define EDMA3_DEBUG*/
( [) o# a! Y( p) {
$ x8 l. }+ P- P: W! O- #ifdef EDMA3_DEBUG
& a" D# h- f: n. \7 I - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
G% H$ E5 X, C7 q- W+ U - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)' H: Y, m, ?. u3 S6 @3 o
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)2 H/ I& |8 ]6 }6 B
- #else& i6 o" g' k6 D5 W4 N
- #define DMA_PRINTK( x... )
: C _6 J' ?2 ]4 m# g3 f8 W - #define DMA_FN_IN; F. a; `5 }# r0 H8 L- t" O, e: q
- #define DMA_FN_OUT3 y! g" R1 q; J3 C
- #endif. Q$ i' O2 Y1 Y2 A" X& b% c! C
; [/ J6 i" p9 u- |( N- #define MAX_DMA_TRANSFER_IN_BYTES (32768)1 t# w8 p \5 n2 ?6 N6 `
- #define STATIC_SHIFT 32 W# K* g' K) N v7 W- B$ W1 _
- #define TCINTEN_SHIFT 20$ D" c" z# O! ]# U9 M$ g, |
- #define ITCINTEN_SHIFT 21
# |6 B1 x9 H! s9 _. z - #define TCCHEN_SHIFT 22
5 e, d) E% q4 Q - #define ITCCHEN_SHIFT 23( _* Z7 T% F- Q/ x) V# }; D
l5 C6 _1 X9 _" r' l+ n- static volatile int irqraised1 = 0;
! i: o- h0 \5 R; T% e$ R( ] j9 \$ r - static volatile int irqraised2 = 0;' p) X. s9 w8 }7 {
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 {" [& E# |; R8 O5 F3 T8 [, g
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& o# B+ p8 P9 u& M: ?) e% S# z - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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2 c$ G) P, W8 A, L- dma_addr_t dmaphyssrc1 = 0;$ t2 s( V9 A" v, Z. K0 m2 ^/ ]
- dma_addr_t dmaphyssrc2 = 0;
8 T/ Z/ M# b/ v* _7 f; z" f# @ - dma_addr_t dmaphysdest1 = 0;6 S" F$ j. x* ?, K
- dma_addr_t dmaphysdest2 = 0;
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. U& A7 j. h3 j9 e3 [; g7 c) f- l- char *dmabufsrc1 = NULL;
6 y6 V( \6 _7 Y/ N+ J1 K3 M; F - char *dmabufsrc2 = NULL;
5 d" N# L8 L0 N! u - char *dmabufdest1 = NULL;
' x! d* y1 F% `- n/ D& h4 s1 k - char *dmabufdest2 = NULL;& y1 ]2 o; M6 y4 z
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- static int acnt = 512;, V( N) ]3 R" Y4 P# y, r( W
- static int bcnt = 8;
" u5 E) n. R; q - static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
9 g7 X6 |6 h' ]/ R6 m' i7 N - module_param(bcnt, int, S_IRUGO);8 d( A. g8 H; ]5 X6 Y
- module_param(ccnt, int, S_IRUGO);
复制代码
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' ?% d' S+ }) r' E 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 c2 c. Q% p3 U% J# S# p: D6 R" G7 o1 Rarm-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。
' J' T) G( _1 Q# _ r7 E( s8 K) 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。2 t8 Z: o6 ^! K1 T5 Y3 g4 T
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