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本帖最后由 yyj 于 2018-1-30 11:01 编辑 - ?- }; [% w2 I v8 z/ G
- [code]EDMA sample test application
7 l0 [# _: D# ] - /*
# Z: H5 \) f" A% @ - * edma_test.c
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- * brief EDMA3 Test Application. [( N1 K# }1 U ?
- *# q- K+ @3 C1 G t7 Y
- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
* }: `: h- ]) @! ^) { - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
- F- c- a9 J3 Q3 D& }( ~3 P - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 v h2 [+ u# V2 u$ L3 y0 C+ a
- *) r3 @& u" K4 F m/ i8 ?$ x
- * This program is free software; you can redistribute it and/or! b7 `2 c, h( ^6 l q% z
- * modify it under the terms of the GNU General Public License as9 R2 }' F5 k: I+ M: \6 h0 t
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
" v+ f$ S" i, v3 b6 u i8 H2 j- Z - * kind, whether express or implied; without even the implied warranty. u, l" N* U- w( d* {+ @" Y1 S
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 {( J" P8 C8 X
- * GNU General Public License for more details.4 f+ N# c) x& w
- */
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, ^- r" X/ Y6 L* W M7 T8 |" g- #include <linux/module.h>4 s* n0 }6 y5 A3 Y% i9 u2 i
- #include <linux/init.h>3 ^0 _$ K# R/ L5 n0 G
- #include <linux/errno.h>
0 Y W" o2 ^4 q* c$ z" d - #include <linux/types.h>" |' a* h& q; X7 T$ k4 J; ?; f
- #include <linux/interrupt.h>
0 y/ ^4 F3 u! ?+ `! D4 ] - #include <asm/io.h>& z; J% I4 ~% y) b& x# K) ^
- #include <linux/moduleparam.h>& `! j8 I" @; A( I, s" g
- #include <linux/sysctl.h>
/ A* {% c$ U: [: k - #include <linux/mm.h>
+ V0 {1 W0 ]( b! T2 Y/ w3 m* N y - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
8 e- o2 Y& \) x - #include <mach/hardware.h>
* k- E6 f2 P8 i - #include <mach/irqs.h>1 t( m4 X( _( z" g0 d/ G
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
- f4 L' T, j7 y - /*#define EDMA3_DEBUG*// ^$ i( t. w: P( H* s% H# b
- ; J) ], a) r0 c2 h5 E; c% `) e
- #ifdef EDMA3_DEBUG" p3 X# P* n) n0 ~
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)2 u: s* k- W2 Y( M/ k( r
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
: G' k3 ~/ v3 N1 X: {* c { - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
' e9 F) B9 v* x0 T# k. j) J. z - #else
7 m+ E' z, J3 G: b# A+ K; c - #define DMA_PRINTK( x... )" D8 s6 k0 b v) q5 G# c
- #define DMA_FN_IN
6 j& h3 k& G, X+ d - #define DMA_FN_OUT
& ?$ a2 z7 W' A+ m: u# u: a' x - #endif! y* v; h u" x9 ~. C: B( c# H2 c+ N
7 [8 V. C* a' m+ p% U- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
1 [8 u( z' f6 o- O# ^) u - #define STATIC_SHIFT 3- @& {7 D7 G- C& y o9 x, N
- #define TCINTEN_SHIFT 20
2 ?0 @, n! w/ b# o u" D: o+ u9 k - #define ITCINTEN_SHIFT 21
: x% z+ x& f* ^# u$ C6 w( l! w0 J - #define TCCHEN_SHIFT 222 Y+ Z& u7 p$ G% s3 p' v7 X
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;6 N, t. `! G+ G) V
- static volatile int irqraised2 = 0;. x3 L9 ~4 M( N+ _% c9 G8 h Y
- 1 N- |4 A$ I1 B, i! c; K
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, |' Y2 q( I M- R
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
, {8 t1 E+ O+ Y4 O6 Z9 M! l - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; c( c9 N( g; u% K
0 G, r; @; ?; C0 m- dma_addr_t dmaphyssrc1 = 0;
$ Y2 h0 s# R& W+ S R, Z - dma_addr_t dmaphyssrc2 = 0;
( B4 F0 l0 d: V7 g9 _2 K - dma_addr_t dmaphysdest1 = 0;
" W4 S8 j- J$ C) b6 | - dma_addr_t dmaphysdest2 = 0; H; v4 r1 b, p- f( g; o0 b- P
1 t1 b) O) e8 x: x J: n, e }& H- char *dmabufsrc1 = NULL;! |+ |/ @: a4 ^: m* d! P. O1 f3 K- h
- char *dmabufsrc2 = NULL;' \/ A" d& L% ~2 Y- B0 v- a- i, c
- char *dmabufdest1 = NULL;
+ S( }- b" X$ v3 Q" j, N3 E7 L - char *dmabufdest2 = NULL;
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/ t; h. x" p0 l- static int acnt = 512;
. U* l, z+ Q+ q: D/ l" K0 Q* W - static int bcnt = 8;: c9 x+ _. p! I7 M; X5 r) j
- static int ccnt = 8;3 f0 G) e5 d; r2 N7 f
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- module_param(acnt, int, S_IRUGO);. ]/ ~: F% \" U3 p
- module_param(bcnt, int, S_IRUGO);
% i8 h' k9 ?9 j9 u C8 X5 _ - module_param(ccnt, int, S_IRUGO);
复制代码 * d1 k, z# f0 E* S. r2 e3 T+ \
" D! W2 b1 J" \( M! j( K; l- {0 k 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! c' ?1 L& t" j) F( S$ \8 o8 i
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。
2 s. }* }6 w8 L% Q- }3 y 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。) k: ] u- ~: R4 Q A5 j' J
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