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本帖最后由 yyj 于 2018-1-30 11:01 编辑
; \% I) | f1 c5 `) d# O( v# s- [code]EDMA sample test application/ N @: C0 X6 Z& O3 s' y# q) X# `$ k
- /*
" J, {! I! U0 a& `: g5 w - * edma_test.c* E+ s9 K2 N* j3 K! J
- *% D. @2 a4 y, u1 t2 W7 m' `9 W
- * brief EDMA3 Test Application; H9 H. m6 w6 r; `
- *
) E0 Q7 J& q; l9 Y - * This file contains EDMA3 Test code. O$ V( u$ g- d3 z
- *, ]6 V& S' j* D* ]" p
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
$ p- ^2 C4 `: q; e/ T6 | - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
" t5 ?+ V% z6 {7 G5 _- n - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 ~% _0 P9 a: O @. T
- *: F5 `( x+ X h+ ?
- * This program is free software; you can redistribute it and/or* d% |7 {8 \5 e/ }/ C% b: P, @
- * modify it under the terms of the GNU General Public License as
- J/ w5 v Q. [5 \1 U$ | - * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any$ C9 o: M9 l& l! `3 w
- * kind, whether express or implied; without even the implied warranty
& U, ]+ z1 [; I1 E9 }$ I( R: B - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! v; ^: T% S0 q s c - * GNU General Public License for more details.
, I4 R8 d4 o- C: ~0 }/ j/ V - */
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7 S2 s& A' x0 Q2 |/ r- #include <linux/module.h>& {; r& K( H* l$ c( O6 h
- #include <linux/init.h>
" t" k2 p# V7 B0 @* F - #include <linux/errno.h>
" K3 m+ ]+ t4 F# e4 d - #include <linux/types.h>
; ^- Y' ^! k- ^7 S8 C3 } - #include <linux/interrupt.h>8 b- V% f2 z$ L& f9 H3 h
- #include <asm/io.h>
9 J& A/ O6 f; a& z - #include <linux/moduleparam.h>- k1 C$ j3 Y( Z5 p7 T+ `8 c+ g4 u
- #include <linux/sysctl.h>
: m; q# a2 T) j6 A6 B - #include <linux/mm.h>
6 Q# b! r. i8 E: Y- o% P( Y& s( y - #include <linux/dma-mapping.h>2 f5 S. F1 a. `1 a& v4 W
- 6 o' x5 j5 p; E d5 m- K
- #include <mach/memory.h>5 V+ r6 }7 H7 [$ X- e6 ~$ ^5 k
- #include <mach/hardware.h>/ k4 F( q2 a, {( S. v
- #include <mach/irqs.h>% C4 A2 @# L' K2 U
- #include <asm/hardware/edma.h>" P, x5 Q$ V! m' B4 h% x
- ! F2 M$ t% T* \ |$ a
- #undef EDMA3_DEBUG4 ]# {+ E8 d8 j
- /*#define EDMA3_DEBUG*/; _- s L9 M8 L3 G
1 }* v* Y- u9 \2 Q6 y. O- #ifdef EDMA3_DEBUG
6 Q- I t/ }& t8 |* k# ^ - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* k% X+ {9 a9 p* f$ w
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
$ J2 q3 T* d9 M5 m! s" ]+ m - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
: N* q1 X- c" G3 ]1 D% J- _ - #else
- M" S$ I! Z$ v, {* b - #define DMA_PRINTK( x... )
. f- {) _1 t3 l8 W6 z" h4 q( K - #define DMA_FN_IN
* g% O( I( J; ]" ] l& u - #define DMA_FN_OUT
' N9 u; |; f6 k! i' o/ V - #endif! K7 c. S/ D4 o
& | q& p" |) i% c/ h- #define MAX_DMA_TRANSFER_IN_BYTES (32768), r4 E8 c& w( M" ?: H# c
- #define STATIC_SHIFT 3 f1 V; t% ]! U; ]3 G/ F/ d! _1 w
- #define TCINTEN_SHIFT 20
0 f* @+ o, Q( F: s% ]* k - #define ITCINTEN_SHIFT 21
) f+ ~1 l J8 I - #define TCCHEN_SHIFT 22
+ I; H; B0 w0 T7 D3 y - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;' ^: H1 R' }* ?* S3 ~) W
- static volatile int irqraised2 = 0;) _( U% v+ G1 ?
! C3 a: ^( |- }; _2 u) y3 g- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); i& r V) v9 Y6 ~0 g5 L7 B% T& r. p/ ~
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! W$ ^8 ^% {9 x
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 D7 D5 p: D9 p- s* J/ L
. O6 ^1 M" T7 H" O. I, `# K% y' _2 \- dma_addr_t dmaphyssrc1 = 0;& C: g6 Y6 q. W; z2 t6 ^
- dma_addr_t dmaphyssrc2 = 0;$ O: Z; ~0 u; G# y7 J
- dma_addr_t dmaphysdest1 = 0;( O/ _; b1 s' ], L+ k( i ]- ~9 i
- dma_addr_t dmaphysdest2 = 0;5 G1 t( ]7 C) g7 f2 C
, W$ E* Y: t' j4 D* i( q- char *dmabufsrc1 = NULL;
' e# }) d" f; r2 o5 S g* o - char *dmabufsrc2 = NULL;
& ~$ Y' h+ P1 p: n4 X- }4 u/ u - char *dmabufdest1 = NULL;7 X) O1 F, y5 Y {4 a, j+ c
- char *dmabufdest2 = NULL;+ H- F5 N3 X! H/ [
% ] ]3 k. W& a; u/ A3 w- static int acnt = 512;
4 V O: B: M; G' i. V - static int bcnt = 8;( ^' k. z$ E. [* h) ?
- static int ccnt = 8;
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$ K, @# Y q% ?1 i$ W& u- module_param(acnt, int, S_IRUGO);
- F. `9 ^; z% U7 [4 k* l$ i - module_param(bcnt, int, S_IRUGO);
7 I) @% g0 M9 Z - 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
: k% W. p' y: {8 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。
9 i( r- _1 a' a @ P# k( 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。
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