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本帖最后由 yyj 于 2018-1-30 11:01 编辑 " \$ F$ ^; O/ Y9 Y+ w+ V/ ]1 z
- [code]EDMA sample test application4 r) h* T, e+ l" A6 q6 t
- /*/ ]3 s* w0 D' v! H' B
- * edma_test.c
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! j" y/ X2 @4 _) i - * brief EDMA3 Test Application' ~4 |1 }: F1 X! a9 U
- *; }8 E. e& \4 d' d# h
- * This file contains EDMA3 Test code.9 O) j3 O' k* H& X$ [# n( A
- *
. _2 `$ g, ?9 ]6 B* e U& H - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
- c9 ]+ s# _. z5 O - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
% [& G x$ f6 Z& X z+ N% [, V2 e7 ?- U - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* o: \; O$ Y5 U8 v6 s" P
- *% q5 k9 ?: p4 w
- * This program is free software; you can redistribute it and/or0 R4 c) P* v$ L, [+ e2 S! a5 F
- * modify it under the terms of the GNU General Public License as
+ s2 F6 N% \ V& I - * published by the Free Software Foundation version 2.
* C: N& {, ~# Z h8 f - *
4 H* [0 \0 @4 d* J+ C - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
/ A% S$ e! W+ w M8 [# }8 d' ~ - * kind, whether express or implied; without even the implied warranty" K! c2 P# ?' Q( X
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5 z) v6 G( |+ j9 ^1 A: F/ M - * GNU General Public License for more details." P' _( `8 }( {: ~7 u# x
- *// E5 q7 G! j y0 [& l
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- #include <linux/module.h>! u& `4 |% L4 S) a. h9 J( u7 ~
- #include <linux/init.h>
7 _! n4 Y# G% A D% |# Q2 h& K - #include <linux/errno.h>
0 P7 g* D; e# [- H - #include <linux/types.h>3 T2 s8 j- m1 X! d
- #include <linux/interrupt.h>( B5 \: K! E) Z, L: D+ Y3 z$ z) V
- #include <asm/io.h>) C. M+ a9 A, k/ J- D
- #include <linux/moduleparam.h>7 ^3 _" {+ }4 o4 U2 U$ ]7 k
- #include <linux/sysctl.h>) V/ J0 y8 ]/ b
- #include <linux/mm.h>3 t5 L! g$ j1 D. ~# i
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>/ e1 r" w U. {7 E d
- #include <mach/hardware.h>2 t) q; z4 a& m+ T
- #include <mach/irqs.h>. L' ~3 j) g. `4 l
- #include <asm/hardware/edma.h>
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' y8 G1 u) {5 i- #undef EDMA3_DEBUG
( P5 d7 {% F' V/ ~$ s - /*#define EDMA3_DEBUG*/
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1 J: v9 ]( j6 i# s" B- #ifdef EDMA3_DEBUG k1 j8 I6 d' i2 Y& l% N
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
q: A, n. r O7 l) O - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)" K# @/ X r$ G5 k. q, _: u
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)2 f X7 E: f- A1 m
- #else9 k0 S9 P/ T, Y: ]+ }# ^& A
- #define DMA_PRINTK( x... )% x/ g' ~- G3 p7 `, j
- #define DMA_FN_IN
% X; l+ i% u+ ~8 k - #define DMA_FN_OUT
[+ ~+ S, }! s5 C - #endif) f' u) I) o/ v2 l3 b2 n
8 e1 \ Y2 B* P% {. F% p4 z1 _- #define MAX_DMA_TRANSFER_IN_BYTES (32768) c0 d% N) c7 _. V3 j
- #define STATIC_SHIFT 3
$ @0 @! s& w. d - #define TCINTEN_SHIFT 20$ z) X+ ?& Z& [* I( I
- #define ITCINTEN_SHIFT 21. T$ x8 r! k% `' N( l. I
- #define TCCHEN_SHIFT 22
8 h. o Z# |0 K* f& d( \* X. C - #define ITCCHEN_SHIFT 23/ O7 t9 Y4 D. Y7 \
- 5 k7 i# K0 m( c1 E
- static volatile int irqraised1 = 0;8 k& P( v* v5 o% A7 {7 b
- static volatile int irqraised2 = 0;/ ^1 r! ]% c( m2 j5 v1 P \
6 f3 |' m; @, g9 Y+ k( ]/ W8 R+ c" T( B- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
1 B2 J9 l' o" w2 n' Y' N. V - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
# B: T a6 N. r+ }2 ~ - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: u/ l+ B8 Y8 |5 M, z
4 \' W$ S# C# }, p# H0 p! d- dma_addr_t dmaphyssrc1 = 0;
- J! |" D8 d9 {. M+ Q" e - dma_addr_t dmaphyssrc2 = 0;% k9 y Y8 P, u" w! d1 o9 [
- dma_addr_t dmaphysdest1 = 0;. ^0 i0 g! R( C5 y
- dma_addr_t dmaphysdest2 = 0;
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% S C2 V: R) x8 s- char *dmabufsrc1 = NULL;+ W: J0 H" m# _0 j$ i0 u k* k3 {$ n+ }
- char *dmabufsrc2 = NULL;
G5 O' Z3 u+ s0 e - char *dmabufdest1 = NULL;& x+ i, F8 u" J6 ^9 a( }0 k
- char *dmabufdest2 = NULL;
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- static int acnt = 512;
' i; f* g# |- C+ l - static int bcnt = 8;5 @2 @* O: y) C! Q& _5 Y4 N
- static int ccnt = 8;; a3 ^# Q6 t2 e' H1 {6 q
: v8 Y: @! Z% X+ i* Y7 W- module_param(acnt, int, S_IRUGO);
; v/ x% i+ F/ I* W& N' z# b( T2 D - module_param(bcnt, int, S_IRUGO);* C. `# D) g6 T% \* o4 z( ?+ t
- module_param(ccnt, int, S_IRUGO);
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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" h9 v* ]8 ~, \8 z' a
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。
" T. U% T* S0 H4 v6 u' P 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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