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本帖最后由 yyj 于 2018-1-30 11:01 编辑 1 p' ^% h/ i. Y$ K
- [code]EDMA sample test application
8 R0 L, y& l! ?9 x5 I% ` - /*( W6 Q4 G+ d" F) I9 l/ @; Q. |6 n$ Y
- * edma_test.c, _( ^. e- h+ l( y: l v% n3 }
- *. V$ y& E3 j, l; M7 N( x( o
- * brief EDMA3 Test Application
" Y4 Q% s( q; ^" `7 @( q$ O3 X2 n( T - *
5 j' p2 q4 t9 D) Z) d" z - * This file contains EDMA3 Test code.
% p7 l' |3 _# D4 t5 B - *
" S& F. J. S& K% w - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE/ j- K7 r7 R ^
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
; N+ U5 F7 P" B8 k5 _' M - * TO CHANGE.
7 Y( Y8 ?2 ~. Z - *
$ C1 \ x- S, z0 o - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 e6 z' C( B4 t! ?* Y- T9 @" k
- *
) m! y) O+ y* b0 C6 U% Q6 d8 H - * This program is free software; you can redistribute it and/or
O( Q) g# i" H - * modify it under the terms of the GNU General Public License as) x* ~% J/ G, M& X9 b9 p
- * published by the Free Software Foundation version 2.
. }% [5 l3 b3 s/ C - *
) T$ w/ Q+ G- F B; N V) j - * This program is distributed "as is" WITHOUT ANY WARRANTY of any7 ]* y) O. R6 z7 t1 [
- * kind, whether express or implied; without even the implied warranty- C6 x% N; x' L& K* q5 I
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4 h* B6 V3 W% ~! ?- {: q$ q0 n - * GNU General Public License for more details.* ^& t" m4 U" u; T1 s$ w
- */: g6 ^% \! e u! ]
' @/ ^, h, Y6 _2 s" M# J3 l# C0 ]- #include <linux/module.h>
" r) g5 `8 H; I% i5 w - #include <linux/init.h>2 P. M/ O3 B5 s, W
- #include <linux/errno.h>
4 g" j$ Z9 u0 T - #include <linux/types.h>) r* P+ o; |+ x2 b1 Z& o6 {* P
- #include <linux/interrupt.h>/ P* m+ `9 K# f8 G3 }" s
- #include <asm/io.h>$ V1 |, a( ~8 j6 h* I, S
- #include <linux/moduleparam.h>8 Y; y* [/ K3 L7 M7 n6 z
- #include <linux/sysctl.h>
7 r8 M. E. w' C" c4 f+ }; \1 j - #include <linux/mm.h>5 p0 Z* X: @: ]- v" r
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
# f1 S; v- k( K4 y - #include <mach/hardware.h>$ m0 V; T# c9 P. s' G* X$ @
- #include <mach/irqs.h>
8 y# m) W2 K/ `( ~) Y2 r - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG0 T0 |; s! y9 u4 ~0 f, b: x/ G
- /*#define EDMA3_DEBUG*/
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# S3 J! h7 K& p$ B& c3 g$ r% P [- #ifdef EDMA3_DEBUG, {/ {/ Q/ ?/ \* ^1 y6 a# I, i/ O
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
# I4 b( ]4 K9 X% w: Y% u - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ y E/ |9 ]; c0 x1 P% @- F
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
5 {, |( o- x5 _0 w( j - #else- c! Y1 c1 W( @) m8 q# H
- #define DMA_PRINTK( x... )
+ K9 P2 o& h% Z+ s6 ^/ t6 {; k+ s - #define DMA_FN_IN
. R T5 Y/ z1 [( L/ L - #define DMA_FN_OUT
+ W: E% X9 O, S/ e - #endif2 S/ g9 _6 w. Z- h! m. X
0 ?3 `% l0 Z* b! p- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
; Z1 b- X+ V& r8 ` - #define STATIC_SHIFT 3/ x, A0 d+ r5 B, n! i
- #define TCINTEN_SHIFT 20
& d+ ]6 [/ i. C$ i - #define ITCINTEN_SHIFT 211 q5 [& ~ L- Q9 ]# P
- #define TCCHEN_SHIFT 22
* z% a, e0 |( i - #define ITCCHEN_SHIFT 236 ?3 n8 ^2 F) M9 g
- 7 ] M2 Q9 W$ n9 D+ |
- static volatile int irqraised1 = 0;8 O9 w% g- K6 {6 s) g% j
- static volatile int irqraised2 = 0;
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7 u, N/ v) {& G2 B+ t- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& H1 e1 Y# v8 ?& V
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; O8 _) u% a0 O" z- C) v
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, M0 a+ s3 j: V
) L; [! z- O+ B- dma_addr_t dmaphyssrc1 = 0;
6 a7 Y- T' K( M" b - dma_addr_t dmaphyssrc2 = 0;
* l7 X p0 q# H4 m" ?" }8 }* n( q' ^ - dma_addr_t dmaphysdest1 = 0;/ t* D) ^ n- a! q
- dma_addr_t dmaphysdest2 = 0;# Y0 t9 V. V' w6 i) U( `
- 8 @, X0 W2 n$ O6 K! E# P6 t
- char *dmabufsrc1 = NULL;
- Y8 t3 f) C3 i" C4 i( W3 K ^7 n - char *dmabufsrc2 = NULL;
: w4 }8 m9 `2 Q' g; x - char *dmabufdest1 = NULL;
5 B' A% j; G9 K# z- {6 L. h# ^ - char *dmabufdest2 = NULL;6 w- L$ R' \4 p) u5 |0 b$ w M
- , l% m- Z( i: ]% ~( @( B6 ?, `8 A
- static int acnt = 512;
1 z8 t) d8 h/ O2 C; B - static int bcnt = 8;
+ M! y- ^% D( v, ~6 o - static int ccnt = 8;
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8 Y! I) l8 @9 y* T- module_param(acnt, int, S_IRUGO);! p2 ]4 i0 A+ X& i. b0 q
- module_param(bcnt, int, S_IRUGO);/ A2 H3 N& Q: Y' e1 C
- module_param(ccnt, int, S_IRUGO);
复制代码
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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) `2 X" D, K2 l, R
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。
' g& j% ~ N5 V; }: b1 R# b) f9 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。
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