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本帖最后由 yyj 于 2018-1-30 11:01 编辑 4 T, T9 I6 R( Y' v) o: ?3 A# {2 D
- [code]EDMA sample test application3 \' u0 }; L6 p: X
- /*7 P% Q% W8 w1 r2 V( N1 q0 l3 K. v
- * edma_test.c6 @5 y8 e( v- ?0 C* E# f8 L4 q
- ** b- ~, ]+ J( k, D8 c) }( |
- * brief EDMA3 Test Application: b$ s& e/ M% J/ `
- *
/ b+ ~. S+ [) S& o' h7 y - * This file contains EDMA3 Test code." t7 ~3 K7 S% l9 s* p: ?( x
- *2 c; v i" G8 Z
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
: u7 J2 J! P& k- \+ E4 n - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 z) c3 P/ V9 l* A0 E# n
- * TO CHANGE.9 \1 @: }" @$ h' I; K
- *
( T* V& @& S7 S - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
: q5 S3 A) T4 A; T6 @" x - *
{' d9 y# W1 `9 V5 D @ - * This program is free software; you can redistribute it and/or
8 m( F* x6 D9 X& F9 w! V* { - * modify it under the terms of the GNU General Public License as- z2 A# f" u" c7 I( u/ w. K
- * published by the Free Software Foundation version 2.5 C w$ ~7 N7 S3 R3 {5 N1 A+ |
- *
7 v% f$ L+ t, h/ K& f B - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
( h* l+ i q. H- @; h - * kind, whether express or implied; without even the implied warranty
/ Y9 U7 n6 N% J: I - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the S6 \4 c% [7 L9 {% S
- * GNU General Public License for more details.
- C! c2 z1 [6 ^$ u$ o& w6 k8 x% Y( z - */
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- H5 S9 g0 y7 m) E1 u# O: w6 { ?- #include <linux/module.h>
% J' ]% p+ {4 ]' E' p) B L1 \ - #include <linux/init.h># {8 {8 u% ]) C5 {. B
- #include <linux/errno.h>
$ K2 g* D* m% m! D# I$ W - #include <linux/types.h>
7 k& L0 _5 v( m; V - #include <linux/interrupt.h>
4 J- {4 J# a! ]4 w9 k3 J' p3 H - #include <asm/io.h>, X$ A$ y( [/ G/ G; y
- #include <linux/moduleparam.h>
4 a( E1 ]' e1 K! e, u% z' D* n* k2 p - #include <linux/sysctl.h>
+ n/ L8 y9 B2 d, R; A4 G - #include <linux/mm.h>, \( p& Q( A# d& j
- #include <linux/dma-mapping.h>
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* N/ g7 D H+ B# C7 ~: x$ x4 d- #include <mach/memory.h>
, J- `# X' m- `" j1 A. P: i" } - #include <mach/hardware.h>" j* Q [* V6 ^! G
- #include <mach/irqs.h>/ T; K# Z% n0 x$ `
- #include <asm/hardware/edma.h>4 @, d4 _9 F5 e# _/ J( O
- ' ]" g+ ?8 a* u0 T! ] W5 R9 m
- #undef EDMA3_DEBUG
/ t7 x# h! u! u4 c - /*#define EDMA3_DEBUG*/
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' r. P, X- O) Q8 p, O. h- #ifdef EDMA3_DEBUG/ O4 ~+ g% b o1 Y
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
. N V2 y6 b, f5 U7 d - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) o+ q) U/ |6 O _' T z1 C
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__), U' }$ R f: _% e/ z
- #else
2 i. a; m, ]/ t( z" Y - #define DMA_PRINTK( x... )
* f9 p/ d! E! K1 y8 L {( A: y - #define DMA_FN_IN
& k7 }2 z1 h& F8 I! X- q/ H - #define DMA_FN_OUT/ D. w1 j& d. `3 J$ P; V
- #endif/ Q8 Z' q7 A! J7 |. E+ a/ ?
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)! _' V8 b; Q! s
- #define STATIC_SHIFT 3) g7 y6 ]0 f: j! [4 o$ p
- #define TCINTEN_SHIFT 20; C+ J# A8 ^" o3 j
- #define ITCINTEN_SHIFT 21* C$ X7 c" e" |! A, U& r
- #define TCCHEN_SHIFT 221 r+ L* a, f4 {% P( F+ r
- #define ITCCHEN_SHIFT 23! ?. ~4 R: b. M3 T5 W5 Z8 N
- p4 y" x2 I) t! h m9 h5 O" M# L- static volatile int irqraised1 = 0;9 Z6 n/ r* G' W4 F+ N; G; t
- static volatile int irqraised2 = 0;$ D/ K" R# m: G" M, s
9 A: k$ U) r& O- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' U$ F3 y" d5 |- q
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
$ ?. A3 L k$ h6 P5 H2 D - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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# a1 L, o7 L; M# }+ ?- dma_addr_t dmaphyssrc1 = 0;
, X$ l- p$ H6 H7 K - dma_addr_t dmaphyssrc2 = 0;
) y" D6 M4 Y$ [1 R2 _5 X - dma_addr_t dmaphysdest1 = 0;
- F/ ^& l- p( |9 Q - dma_addr_t dmaphysdest2 = 0;
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; V0 s6 u7 ?! ~. F' c- Y- char *dmabufsrc1 = NULL;4 A" i% W. @! f) h8 v: L) @& U Z
- char *dmabufsrc2 = NULL;, U( I D. `! e# M
- char *dmabufdest1 = NULL;
" B4 i, M; D) m& P4 W J. \ - char *dmabufdest2 = NULL;
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: A( x9 b) @' `% W- H8 d- static int acnt = 512;
/ n& v6 d$ \& M" M; U( _0 M2 T - static int bcnt = 8;5 Z+ _; Q* Q# j
- static int ccnt = 8;2 h+ n" j1 |' q* A
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- module_param(acnt, int, S_IRUGO);$ T& E/ n$ f- `7 D- |& z
- module_param(bcnt, int, S_IRUGO);
; ~' A. R3 i3 b - module_param(ccnt, int, S_IRUGO);
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! i/ V* u3 K; h& t) F7 t `8 a2 S- E 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 z! {0 P3 @2 F6 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。
& Q' P. c6 ~% r" ^& D 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。/ z6 F' P4 l- o3 [
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