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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ( \& C7 f0 b9 O, @( [- N" A
- [code]EDMA sample test application& u& N# n2 q7 g. Y* s, ~5 d
- /*
3 ?8 e) K* v+ W+ \0 t - * edma_test.c
6 S Y+ B( g& \! E - *
& h; ~( I% S% |. O% L - * brief EDMA3 Test Application% ?4 X: [4 O% M' u [' m
- *
: ?1 s) V+ ~* z0 R& f+ w - * This file contains EDMA3 Test code.
0 v2 W& I! G7 K3 B. {* t - *
5 ] ~. ~* |/ I$ p9 u& t" _ - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
! @/ Z# O. |: }! N: W4 s6 Z8 P - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 Z% K' s5 G: ?0 a/ K3 s/ {
- * TO CHANGE. B0 x" u- F0 R. G5 r5 K
- *
8 ^7 b4 |; |- v$ O: n& m - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
* k ^' Q1 z' ~8 l - *
: R' {8 I+ J1 u+ V% G - * This program is free software; you can redistribute it and/or( _( C" v( ] G/ E/ d
- * modify it under the terms of the GNU General Public License as
4 G, x" {4 m, G - * published by the Free Software Foundation version 2.
. s; u7 ^, r8 B+ ?0 P5 ` - *; _7 ~5 ]6 y9 M: u
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
; D: M/ ?+ D/ Q, u6 X; C - * kind, whether express or implied; without even the implied warranty4 Y$ Y9 w2 @. w4 t* e% R
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! R1 N! u; C2 o4 c5 l - * GNU General Public License for more details.
# N- h# _9 J8 l# h k8 V7 m7 q* Y - */" k. ~! o' l8 Y% x3 g2 m1 u
" R3 C7 d) l+ F9 ^* i/ E( |- #include <linux/module.h>0 B; y7 j2 N, }% i
- #include <linux/init.h>3 x5 v5 s& z( I9 I' n( ?) W1 \0 t
- #include <linux/errno.h>( z( e2 o; e. ^, e( k
- #include <linux/types.h>
+ n8 f0 `0 u. Y" P$ t - #include <linux/interrupt.h>
1 ]6 w1 b( P! C5 O - #include <asm/io.h>+ l) y# z9 W: K, P# \& Y
- #include <linux/moduleparam.h>0 P, _# k2 L' ?
- #include <linux/sysctl.h>- q" v. k$ L/ R u& B' Y d+ m+ O! T
- #include <linux/mm.h>3 Y2 I$ m$ n! z7 G/ k2 V( n6 S
- #include <linux/dma-mapping.h>2 o1 N% N* z& L5 z
5 d6 ^3 c6 @' e4 K3 ]- #include <mach/memory.h>. X: \! y& r+ a. s& _6 v/ M8 q
- #include <mach/hardware.h>' M: g- R }& n: Z9 G% W7 v7 W
- #include <mach/irqs.h>
b, x K/ f0 ^ l - #include <asm/hardware/edma.h>" T/ Y4 A2 f0 M' ]4 H6 s
; G0 X6 V( H$ a; Q2 B+ n+ E$ H4 K- #undef EDMA3_DEBUG
, H$ b$ q) ?& r$ _. p- { - /*#define EDMA3_DEBUG*/
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1 v3 F/ h6 V/ ]- #ifdef EDMA3_DEBUG
7 I3 a, d" p4 i3 l - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 ~- ~0 p$ s k' ?3 C: {9 O6 }
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)! Q+ X8 O& o4 ^- }
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)/ y; D6 J' F+ |
- #else$ X1 z$ _5 U( T) o% H: h: e
- #define DMA_PRINTK( x... )
6 v- U: c- E8 w- V+ G - #define DMA_FN_IN+ k% Q- D# a: r" r
- #define DMA_FN_OUT
4 N& v0 q' H5 p1 R& G - #endif
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5 h% ]: R# z, V+ d( o. H- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
: x% p: Y5 ~- A$ a9 X' S. M - #define STATIC_SHIFT 3! `; e& P* t' h
- #define TCINTEN_SHIFT 20
' ^9 h- B% |% I7 W% h6 f - #define ITCINTEN_SHIFT 21! r" e6 i/ x/ K. X5 n
- #define TCCHEN_SHIFT 22
2 j+ e6 E8 Q, O - #define ITCCHEN_SHIFT 23
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! \6 r+ K* ?6 r' w! r }. t' w7 C! k- static volatile int irqraised1 = 0;+ E4 l$ X) |& O$ z8 y! H! ?2 q
- static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: L9 h7 v9 O! Y; ]8 i. y, z4 Y( A
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
$ h7 I {# X2 `3 M - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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- dma_addr_t dmaphyssrc1 = 0;
* D4 t! M1 o+ m4 J$ @7 f) I( r - dma_addr_t dmaphyssrc2 = 0;4 F$ ?7 T$ M) K" b" @
- dma_addr_t dmaphysdest1 = 0;( Y" S _! g4 t9 v7 _2 `, t
- dma_addr_t dmaphysdest2 = 0;
5 a( ^4 ?: \: Z$ {
M+ I& m: k" T4 y# `- char *dmabufsrc1 = NULL;
8 x6 S+ T. D" }. {, m; V - char *dmabufsrc2 = NULL;: I8 J! |2 q2 T* F. m; ^
- char *dmabufdest1 = NULL;
" u Q7 Z2 s K8 R* |& C' k - char *dmabufdest2 = NULL;5 z! R- c" Q0 r" S# w; I
' w- A$ X# X& t, S+ u- static int acnt = 512;& f/ C- l3 Z# h8 O! X
- static int bcnt = 8;
4 X" p' C4 J& D/ U( f - static int ccnt = 8;& k1 P! M: l) P) c1 z+ I4 q4 J
/ S; f9 t4 e4 p! j' s- module_param(acnt, int, S_IRUGO);7 J4 c, [; h. Q
- module_param(bcnt, int, S_IRUGO);% Z- I3 C' u; z! ]5 H3 [1 K+ q" U' I
- 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: A- D6 G: N: b" q. S2 A, b5 X8 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。9 V5 [ L o0 s/ o, ?, x; J, U
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。) x2 x* |6 ]! x3 T9 y9 V
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