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本帖最后由 yyj 于 2018-1-30 11:01 编辑
8 W1 C" a" o% H! Y4 C- \: \- [code]EDMA sample test application2 b9 I) q1 A( c1 P' R$ {
- /*
: g$ O( l' t L1 ?8 [0 k! X N - * edma_test.c' X7 x# @& z- j& Z& q7 \; ?9 B Y
- *9 o6 v! @/ Q- z. a2 k# P9 F3 G
- * brief EDMA3 Test Application
6 c) t0 r# n) X R% ~ - *
& ]! \, Z w2 w& b0 ]( E. O! s - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
7 f" ?5 X1 q# V% \1 | - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
P, w1 l8 p& B) e/ z! _/ ] - * TO CHANGE.
5 @3 Q5 Z: g+ K) f+ A7 z' S9 e) T - *
M- r- x Z7 Y8 _ - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
0 l9 F Z) Y0 q$ R - *- T. Y$ B: e. c& O2 F
- * This program is free software; you can redistribute it and/or
1 U. F* [ b" @3 W2 F - * modify it under the terms of the GNU General Public License as
+ z |9 r$ A" n/ }5 F3 K - * published by the Free Software Foundation version 2./ ]# B% u3 |' v
- *! d v; R y- I% U) C4 j/ X2 Y d
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
0 W1 {6 R7 L! } - * kind, whether express or implied; without even the implied warranty; K9 t: z6 o8 l- V1 b
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% t2 R# k* G6 m d& d
- * GNU General Public License for more details.
7 ]) |: c5 S, f) l4 N - */
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- o6 o8 m4 m N5 U8 D5 N- #include <linux/module.h>+ \8 s5 H$ n# f! R
- #include <linux/init.h>
# P) H) n8 X7 X A" ` - #include <linux/errno.h>9 H5 i" R# o* S A+ r
- #include <linux/types.h>
: j! ^9 O9 a9 }! Y, A - #include <linux/interrupt.h> T( w% V- J/ M) }6 q4 O+ _
- #include <asm/io.h>
5 h. x! X: O z2 [/ x+ \ - #include <linux/moduleparam.h>/ J1 a- l2 q* N; U+ y9 B( }) B
- #include <linux/sysctl.h>5 L! C. V% I9 _
- #include <linux/mm.h>: i9 R4 C# M/ l, @: y
- #include <linux/dma-mapping.h>( s+ f( ?) s9 T& b
) a' i9 W# n; |# w7 ~9 t- #include <mach/memory.h>
' S- M+ p& `; S$ a2 ? - #include <mach/hardware.h>
* e8 d Y+ X+ V$ ]' n; O6 s) L% t3 r - #include <mach/irqs.h>+ r! v/ U+ d" f& G3 G: z) I
- #include <asm/hardware/edma.h>: R7 ?# d- b' Y
8 F6 Y Q) ^1 v! z2 v- q& `9 g& O- #undef EDMA3_DEBUG' u" X% X; v2 B0 ]
- /*#define EDMA3_DEBUG*/
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8 w4 y/ N# w @- #ifdef EDMA3_DEBUG
2 n- _( M$ M+ h3 T) P2 j; k - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
9 Z5 y# P. L8 s - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
' l$ e- d5 `( T8 f# `- k - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)/ h6 T9 E2 U) L" g
- #else
8 `" S+ i2 ?0 A3 v5 G! X& O - #define DMA_PRINTK( x... )
& ?* ], w' z" o% c- J8 L' c - #define DMA_FN_IN
9 `* y3 I" N) B- y% _& e0 f - #define DMA_FN_OUT" ^/ Q0 B" m; |6 B
- #endif+ O) t) h- O2 y% Z
: o7 |& I2 s# F, b- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
- g& z8 H. X* S" U - #define STATIC_SHIFT 33 t8 }6 l- [$ k5 ^1 D
- #define TCINTEN_SHIFT 20
' C6 N" F+ o7 q ` - #define ITCINTEN_SHIFT 21
) T o; b7 z& _ - #define TCCHEN_SHIFT 22
- `* m" J3 a3 F, Q6 Y - #define ITCCHEN_SHIFT 23
9 `- X3 E1 |# C. c- m - + ~. a3 l' T, S9 _ Z! ]% U
- static volatile int irqraised1 = 0;
1 d- K7 y1 s [% i+ a2 i5 l - static volatile int irqraised2 = 0;
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2 f7 {2 {3 E; x+ W- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
$ Y3 K! _+ a; J+ a, R& v - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
3 @8 ?/ X+ j* p3 ]4 G, m - 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;: [" c7 }3 C% }9 S
- dma_addr_t dmaphyssrc2 = 0;1 N! y8 G( J/ T7 d8 B# u: z- P
- dma_addr_t dmaphysdest1 = 0;6 `4 T [( f3 ^3 L- D
- dma_addr_t dmaphysdest2 = 0; `* F% P! w1 X: i% X1 Y+ H
- 1 h. I9 G6 @ `9 `6 P. D
- char *dmabufsrc1 = NULL;) _0 Z8 z) t/ i1 p9 P. f+ i
- char *dmabufsrc2 = NULL;
8 Z) g, s& N+ |: ] - char *dmabufdest1 = NULL;
+ b5 X& u6 Z @( C7 T) I; \8 w. v - char *dmabufdest2 = NULL;
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- static int acnt = 512;
5 D+ D' S* M3 q" o/ S$ A6 Q - static int bcnt = 8;
Y! p" O5 |+ | - static int ccnt = 8;
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" r! a- K, a8 I8 y' y$ @- module_param(acnt, int, S_IRUGO); a/ m; h9 y" F. G N
- module_param(bcnt, int, S_IRUGO);2 b+ F" |8 h1 B% h: N
- module_param(ccnt, int, S_IRUGO);
复制代码 1 b8 {9 J$ H7 A1 `
5 F. _1 V$ }- T" @$ G' A( C 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
( |$ T8 s2 U4 o$ t1 d0 oarm-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。 k F" m/ K) z5 Q e4 f
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。4 Q8 z0 H9 I$ E6 U: V, N
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