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本帖最后由 yyj 于 2018-1-30 11:01 编辑
- R* r) {! m, F% R- [code]EDMA sample test application
# K! h/ }- d; Q, H, L0 b# f- O1 T - /*
- I* c$ B U+ \ - * edma_test.c* h7 V( m: o. d& J* U
- *: W. A. H* T, w% g
- * brief EDMA3 Test Application
6 N- j/ j2 L; e5 r6 a8 t - *
5 `& k) S# I) N. c - * This file contains EDMA3 Test code.
. D5 B& `6 _- ^+ N% y: b: b4 W - *
* O4 M4 Y7 y$ f/ f# f - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
( p% F: t g6 u. T - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT- U9 q% ^9 G% x6 Z& i. F' Q7 D
- * TO CHANGE.7 m, [% T5 u$ l1 ?# L) p
- *
1 x* `8 O, |! e+ \4 X* n: J+ U - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 c& { K: b6 G6 L2 f$ _! o0 d
- *
! |" d/ c/ c2 f/ _9 a* d3 x - * This program is free software; you can redistribute it and/or
$ b3 P+ d6 I% s: H3 K; c - * modify it under the terms of the GNU General Public License as; c9 j9 S0 }0 V8 H7 q
- * published by the Free Software Foundation version 2.
1 \( p2 B' b9 d; R' d4 v" b9 h - *- y% e Y8 [& P
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any% e3 ^ l! p) m; c5 L
- * kind, whether express or implied; without even the implied warranty
/ f+ `7 }# E1 N3 y) P, Y - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; Z2 T0 _% S: Q( P, E
- * GNU General Public License for more details.9 `/ {# p$ [" C
- */4 L( E5 S4 L2 y% L M- K. v2 q
) @. O" m& z& F8 B$ p X3 N2 ~- #include <linux/module.h>
1 p( T0 M% b) ^9 _ - #include <linux/init.h>. q+ I; [( u' }8 ?! `
- #include <linux/errno.h>
7 c$ U: r7 ~- i2 { - #include <linux/types.h>
' j! @; p4 w1 g- t; e* w6 Y - #include <linux/interrupt.h>3 i: t. v) w! c; T4 u7 \
- #include <asm/io.h>8 @8 g8 E4 ~* _1 n7 ^
- #include <linux/moduleparam.h>% |9 q9 O% R+ C# ?
- #include <linux/sysctl.h>
* K' [( C% U9 N6 G8 p1 \# c - #include <linux/mm.h>( E9 S4 _ ]( H. z5 i( _
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>( I& n, v7 @9 W- |' f2 S9 d. a
- #include <mach/hardware.h>
: y$ A& D1 k- y1 { - #include <mach/irqs.h>* a( s% A4 M W b1 y, R( c8 Q& y
- #include <asm/hardware/edma.h>+ w, O8 ?" h; ^$ G# c/ ~
- 9 m1 R- H' s! ^' @0 i
- #undef EDMA3_DEBUG
$ y& k$ P! d. `5 |/ E% k - /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG5 }$ a- o' W) T" d. `; |. U: t
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! ^" C8 m* A( `( G
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ R7 e6 P$ b9 e2 D0 Q
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
: ^" S" q7 f. J B* h - #else
/ y- H8 `$ v$ \ - #define DMA_PRINTK( x... )3 l) h3 g3 w5 p) w
- #define DMA_FN_IN$ x, Z/ c, V3 }4 n' ]9 W
- #define DMA_FN_OUT
r, r; t5 H- G: r - #endif
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& N" }( d; v. ^1 y- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
$ M. Y t! J$ \! `5 r - #define STATIC_SHIFT 3
7 s* H% A( p( U- y - #define TCINTEN_SHIFT 20 f; U, v5 H* j, P7 G7 F% z" H, S
- #define ITCINTEN_SHIFT 21
1 H" A! U3 o2 u1 Y - #define TCCHEN_SHIFT 22
) z( J) @ W) W+ R3 m. ^" x! Q! W - #define ITCCHEN_SHIFT 23
# B& U1 w8 L) k T! O+ ^4 I - ; ~. {. E# X/ p _
- static volatile int irqraised1 = 0;
+ I$ ]: \5 w6 |2 @; _% R i - static volatile int irqraised2 = 0;5 r! t8 _. d0 S0 [: W* S7 ^
! p' S$ H& r5 C$ A' b' ~- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
8 O6 d* g+ K, e" I9 N' c# n% m8 p - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% J9 u1 \9 A. Y/ f
- 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;, {. ]0 N0 j- j9 I4 o6 M( j
- dma_addr_t dmaphyssrc2 = 0;' I( v; A1 ^& N2 O, {0 e" P
- dma_addr_t dmaphysdest1 = 0;
3 }9 p# k Z! p$ K - dma_addr_t dmaphysdest2 = 0;
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" B8 X7 u: r! j( Z: e5 ^- char *dmabufsrc1 = NULL;
& S* p+ D9 v: S a) h8 Q R - char *dmabufsrc2 = NULL;% W( L' [4 J; m3 q$ I/ i+ ~5 R
- char *dmabufdest1 = NULL;
& A) `, h0 e# X8 {- x& ^ - char *dmabufdest2 = NULL;0 l; z. r" x" D) {3 K$ w9 z
5 |# y, m! }, c+ [. g7 a5 @+ z- static int acnt = 512;+ M& a/ ^( B) u
- static int bcnt = 8;3 C& F2 M( A* G4 |* k3 ^
- static int ccnt = 8;
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3 q7 w8 H' K9 a- module_param(acnt, int, S_IRUGO);( p/ c+ S' g# S- y
- module_param(bcnt, int, S_IRUGO);
0 n: ^- r7 p$ X& e" S4 G8 J - 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) C: e- \" W8 @4 l4 P
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。
6 E8 |6 z/ k' W0 g8 Z* s: F# h 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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