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本帖最后由 yyj 于 2018-1-30 11:01 编辑
- R- P5 B0 \% W! J# ^) ?- [code]EDMA sample test application/ x* s/ p- s- M" C7 n( j' L6 p9 s
- /*
+ x2 C- j* {1 P5 u" l7 N - * edma_test.c- M+ K, u L; ?: T0 I# p+ ~4 d
- *2 L5 I1 O/ o+ F4 s2 F
- * brief EDMA3 Test Application' @) c6 ?+ s( F" l$ a4 t
- *" \& P4 |1 h+ p9 H" l0 o6 a
- * This file contains EDMA3 Test code.
, i3 `( w* }% Z( X2 |7 n; O - */ b+ {0 e; J! S( i/ \* J* ?
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
# h a3 k2 C5 ?. p - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT2 _( ^. d6 B$ H& j- q! e j
- * TO CHANGE.) @2 f/ k' I9 }% e
- *' h( q* e ?. `" r' g2 Z
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( q G+ f3 ?" k2 o% T
- *, a/ s4 j; a6 T3 A8 d
- * This program is free software; you can redistribute it and/or
3 T+ y5 w" ^6 p2 K, w( T7 M( o - * modify it under the terms of the GNU General Public License as7 u$ l4 f6 y* ~5 k7 d
- * published by the Free Software Foundation version 2.5 L" R; {, a/ W; ^- t
- *3 f+ A$ R5 G+ G; h2 r& M& p. P- K
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
! t9 ^) q" S: v4 M0 b5 | - * kind, whether express or implied; without even the implied warranty. q9 v9 n+ v+ R* i
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( j1 U: T h4 k& E) d% |9 P
- * GNU General Public License for more details.
1 W" G2 o8 ]/ l( @; j0 F - */
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- #include <linux/module.h>
6 N5 S8 D* Y+ [- _' @7 X/ B - #include <linux/init.h>7 L6 y0 R/ c) V# @
- #include <linux/errno.h>
7 h* Q- n: O: M9 O& p - #include <linux/types.h>
# M0 n# E5 h2 b i. [4 D - #include <linux/interrupt.h>+ i$ G( F$ m& K" R0 `
- #include <asm/io.h>
0 D! t( x: q7 c - #include <linux/moduleparam.h>
1 K8 b ~, X) U8 H6 z4 V) ] - #include <linux/sysctl.h>
7 A% k6 i/ m3 c( Z8 X - #include <linux/mm.h>
: k0 a# Y( H9 S' O) L: C5 a! C - #include <linux/dma-mapping.h>
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- ?! y, T( l& T) F- #include <mach/memory.h>9 v2 g0 m5 L, w) o, {! D3 p7 r& U
- #include <mach/hardware.h>7 e5 h2 f8 _( E
- #include <mach/irqs.h>( t3 W# s- N4 J2 ?1 |9 W6 Q, _% s2 @
- #include <asm/hardware/edma.h>9 t2 J% F5 [9 b% G
- $ |* B: q0 k- S b2 j- \
- #undef EDMA3_DEBUG! c. ]4 T9 u% e) H
- /*#define EDMA3_DEBUG*/
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* i. p) ~" Q9 U0 |) ?6 ~9 e- #ifdef EDMA3_DEBUG7 }; n- L0 j8 x+ ?- v
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 v, O) t2 H8 g& {! E
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)* ~' j3 b2 f8 E$ o
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ y7 b8 z$ y& C' u' W6 j; H
- #else
9 H( ~8 j8 l; u& F+ d) w - #define DMA_PRINTK( x... )
* Q0 l$ D/ }$ V1 d! g0 D - #define DMA_FN_IN
+ N1 V: m; ^7 O1 M3 ^+ @ - #define DMA_FN_OUT, h2 u* e% M7 ^; K0 w3 c
- #endif3 ]4 b" ^, o( r9 v
7 O; B# q: }9 b$ q' |/ u- #define MAX_DMA_TRANSFER_IN_BYTES (32768)* Z/ { M n2 V8 B7 i) t, v
- #define STATIC_SHIFT 3 z/ P; g/ a% p6 l# y
- #define TCINTEN_SHIFT 20
# y, T4 W; m( K: U: L- n - #define ITCINTEN_SHIFT 21( o/ E! t0 R f2 p$ P; g
- #define TCCHEN_SHIFT 22
" c, P. m4 M3 c1 ^! X8 k' d; X - #define ITCCHEN_SHIFT 23+ B/ o; M7 U# Q, U! D6 B- ]4 x8 W
/ U2 v% u! u; a# c, M* z0 |- s8 S- static volatile int irqraised1 = 0;
7 `+ \3 K( C# A# b. r' k- w - 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);
8 P2 f' }: D8 S& O - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
. I. ?$ ^' K- ` - 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;) \$ Y8 n6 N# t, o2 R, O4 q5 C
- dma_addr_t dmaphyssrc2 = 0;5 i% l" ?# Z) Y6 B* X' Q8 r
- dma_addr_t dmaphysdest1 = 0;
- M) x0 s) F# P" B8 O - dma_addr_t dmaphysdest2 = 0;4 O5 m; Q( w! N+ G* u. V6 g% c/ B" m- ^
/ [& i; e+ E+ {# z( I: A- J- T8 J- char *dmabufsrc1 = NULL;: K" _! a, w! Z( O0 a' C7 q5 o
- char *dmabufsrc2 = NULL;5 u0 H+ y0 e4 _7 q
- char *dmabufdest1 = NULL;/ Z$ y5 X. S( Y( Q6 y0 l8 B
- char *dmabufdest2 = NULL;& }9 v2 J0 @9 p6 h, q) f- w
- # i: f. h$ g/ y6 {
- static int acnt = 512;4 [# m; ?' z6 F( d% G
- static int bcnt = 8;7 ~' K4 z" L4 {' I9 a9 |, `
- static int ccnt = 8;& d/ ]$ Y& B8 A0 m% [5 a
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- module_param(acnt, int, S_IRUGO);
" d0 C: X4 Y9 D( Z - module_param(bcnt, int, S_IRUGO);) _$ }' m" _; f# i; C4 B) @
- module_param(ccnt, int, S_IRUGO);
复制代码
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* N. h2 B* y8 C1 D Y* _0 M, {+ w 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& D. i, @+ X+ f9 h a$ j% W7 m' u
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。
. L- b4 q0 @1 I3 C& t V 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。1 W8 \; L' L$ I. F. I' V" m
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