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本帖最后由 yyj 于 2018-1-30 11:01 编辑 / h3 B/ r* f' ~, t7 O
- [code]EDMA sample test application; }. | R1 l' Y9 ] f. i
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- * edma_test.c
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8 M! J7 ^: U B0 t+ w( R - * brief EDMA3 Test Application& i1 U [: ^$ t- }; q! B
- *
, H/ ~, u) X; I) d8 e- L - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE. w' `5 {& T3 @# O; p' Y6 }$ @
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT I4 T0 F) ]: Y5 B
- * TO CHANGE." C7 i/ q3 h( L& D
- * \+ M' t' z! L1 r* r" m2 b0 k' O# q3 x
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 p1 S7 Y% g+ T: S* x0 }
- *
* w. ?7 |8 U1 e5 N3 x+ t( k# b" F - * This program is free software; you can redistribute it and/or# h5 F" T! o# o2 |
- * modify it under the terms of the GNU General Public License as
) o- d- T/ a% y7 k; Q - * published by the Free Software Foundation version 2.
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$ S/ A- r! M/ A' c. G - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
/ O/ ^9 ^& F' u. m; ~ - * kind, whether express or implied; without even the implied warranty, @" N. k: P( {- ?1 Z
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the g$ z& Q/ }9 t- Y! u
- * GNU General Public License for more details.8 L) G% t2 L/ ^! Y$ ^! A) T
- */: ]% O' Z4 B& P3 F7 Y8 G2 E
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- #include <linux/module.h>
G t8 g' P) z0 y - #include <linux/init.h>
" g" w: n/ x5 X( X- f - #include <linux/errno.h>
7 f- \3 ]* ^: F8 Q3 ] - #include <linux/types.h>, m6 q9 c' E8 |
- #include <linux/interrupt.h>
8 r3 N" l$ T! a/ Z8 e* h5 H* ]6 O - #include <asm/io.h>
; U& N2 f+ m/ A3 {$ r% U: v - #include <linux/moduleparam.h>- u2 S/ n1 b; c% m5 V
- #include <linux/sysctl.h>
+ ]; ]; l& p* C* Y - #include <linux/mm.h>/ i! Q7 D: Z. U1 N( _
- #include <linux/dma-mapping.h>
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5 }3 \2 ?, F2 O- l8 q" G. [- #include <mach/memory.h>
4 B6 ^' ~8 j! F, w - #include <mach/hardware.h>
7 e E g$ R5 _6 K; W. B( ] S - #include <mach/irqs.h>5 t/ b" n5 _: {
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG: g* ?* r2 q& {6 [' t9 ~0 m
- /*#define EDMA3_DEBUG*/8 t3 ?4 S! E5 E# O' ~
& X1 w: z% a+ U$ z$ p- ]- #ifdef EDMA3_DEBUG2 z* }9 ~: h M! q
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)& X7 \9 b, l. H& l, N
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
3 S X* ]$ W2 t2 }( V6 t3 x$ X - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)2 b1 C/ E. \/ C8 i
- #else
) @- w5 p2 ~5 D4 `% t4 f$ k' P - #define DMA_PRINTK( x... )
( ~* b3 Z' T( Q5 p. Q+ S2 R3 g" x - #define DMA_FN_IN
8 g4 j' ^: q) W7 K - #define DMA_FN_OUT* y9 E1 ~+ Q9 O5 j1 }# _
- #endif
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4 j$ Z6 J4 M0 ]1 V- #define MAX_DMA_TRANSFER_IN_BYTES (32768)' A: \6 q& ~: R" ~
- #define STATIC_SHIFT 3
1 M; s1 n% O- Y8 \ - #define TCINTEN_SHIFT 20- S8 E+ W5 ]* z
- #define ITCINTEN_SHIFT 211 t b& q2 O3 f: H# o5 l( k
- #define TCCHEN_SHIFT 220 q5 B& r5 S$ q% X! K; u5 F
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;2 J$ B9 ?' d" d! L! O8 b; v
- static volatile int irqraised2 = 0;
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; p5 d) E0 V7 m# m' o- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
7 s! z: n }. _7 a$ U - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
4 U4 y8 e# e3 a% D - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. W. C% w& z s" ~% n7 t- K
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- dma_addr_t dmaphyssrc1 = 0;% k0 V. O4 O$ D& H/ o6 x: ~
- dma_addr_t dmaphyssrc2 = 0;
8 K4 C; j: ^, L4 I$ N! M - dma_addr_t dmaphysdest1 = 0;1 M) s3 H0 X! r( ]* ]
- dma_addr_t dmaphysdest2 = 0;
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( H! W6 \# W4 {- char *dmabufsrc1 = NULL;
+ W3 j" Z8 Z& S* x: P | - char *dmabufsrc2 = NULL;" [% \/ u3 p; f9 C" [* o2 \
- char *dmabufdest1 = NULL;
) j' @7 {" `2 V0 y* h9 ^4 k" e - char *dmabufdest2 = NULL;0 Y0 I5 Q! s0 P8 w! N
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- static int acnt = 512; U. O/ ~& n2 x5 s9 \
- static int bcnt = 8;
. M8 C- v) w$ Y8 m6 B! \' ~ - static int ccnt = 8;6 w4 u- B- ~$ P8 I, @
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- module_param(acnt, int, S_IRUGO);) x9 L$ {0 Q" b
- module_param(bcnt, int, S_IRUGO);; z8 o& ^5 s* x A
- module_param(ccnt, int, S_IRUGO);
复制代码 , f2 K. \; K+ ?% H1 x! K
% M+ c( h7 A- L7 l( { 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
9 [6 u! y! B/ ?8 Narm-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。* `6 n, A- T9 k! I9 f- m
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
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