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本帖最后由 yyj 于 2018-1-30 11:01 编辑
, Y v7 E8 F- Z) c) ?% L- [code]EDMA sample test application9 `& e! F$ Q, N1 H. t7 j, t5 E
- /*
) C3 M2 P& O r" L7 d ? - * edma_test.c
- b( f4 p& W: d - *' E6 G3 C, |5 o" u0 s0 |
- * brief EDMA3 Test Application$ r/ n( |7 t4 p6 O4 B
- *
; p+ D; P( z8 H9 Y - * This file contains EDMA3 Test code. Y1 v" H" R/ | s& j z# ^- g
- *
( P$ Q2 E7 W0 |! {7 J - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE) S, l1 U9 Y; x0 h7 i
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
3 B9 }! W0 X; C" n/ I0 A - * TO CHANGE.
- E1 F- w! W: C+ F* R$ u4 { - *5 e$ t/ W p$ C: J2 `5 a
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
0 C( G+ i+ s6 C2 m* E- d/ s - *
( m5 I! d- \( _$ F s( E - * This program is free software; you can redistribute it and/or" @- U, F* a# O
- * modify it under the terms of the GNU General Public License as
N9 A, {4 e; o6 b/ l - * published by the Free Software Foundation version 2.
- C+ ?% Q ?8 m! d - ** D1 G2 L; g2 l/ V/ z
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any! n) ^/ E6 g! ~! d' W1 j
- * kind, whether express or implied; without even the implied warranty
& R& e3 J6 w$ W+ o. ] - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
/ D, t8 V6 v r+ p& ` - * GNU General Public License for more details., A8 }, w+ m4 u3 [" z/ ^+ G' e i+ Y7 ^
- */
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- #include <linux/module.h>
8 [; H" [% x( e: M - #include <linux/init.h>
/ k- I4 y: N8 u% P) O - #include <linux/errno.h>
3 G& F6 T2 ?2 x, k' n. D n - #include <linux/types.h>
# y& F' K$ ^6 \/ @+ M - #include <linux/interrupt.h>
, n9 [7 r% s# N# F - #include <asm/io.h>7 L- m3 H2 A* @6 S
- #include <linux/moduleparam.h>! d" e9 I) u1 t
- #include <linux/sysctl.h>
4 g. u7 D, o3 o3 V - #include <linux/mm.h>
9 v4 |$ C' S2 u3 M4 P; J: l% y4 W - #include <linux/dma-mapping.h>
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3 L/ [$ o5 j( r+ F. o2 u- #include <mach/memory.h>1 u5 V4 L: O3 O+ D. f& ]+ R5 ?
- #include <mach/hardware.h>1 x0 T5 o! e1 A
- #include <mach/irqs.h>0 [ ~, v- `1 A. @/ ?5 {/ j. m
- #include <asm/hardware/edma.h>
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1 j! q, j2 G: O2 C- #undef EDMA3_DEBUG0 b/ t* V3 O( e5 N: N5 T% ^9 F6 n
- /*#define EDMA3_DEBUG*/4 p; K8 m/ q, x. G; Q1 H- n3 `, e
7 ?: \8 M( A( k3 D7 B- #ifdef EDMA3_DEBUG% c- ]& \) H. t- W+ f: ?. x- A
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
5 L, s0 H+ S' z- Q( K6 [ - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
; a5 g8 y5 ?. H! K. C* i0 ] - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). a5 r; ~0 x J* K( f9 y
- #else
' ~5 X( E1 W" X1 V4 x: n6 _ - #define DMA_PRINTK( x... ): V3 I9 O9 {+ i; R
- #define DMA_FN_IN/ ]* l7 ]6 v3 J- G4 d
- #define DMA_FN_OUT- Y: T+ [1 s, q9 L2 T2 X" n
- #endif2 l3 ?; k1 d% P, p2 ^" ?
% a7 x4 M$ e8 h7 ]/ m- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
5 P; r7 t2 A& p4 d+ |6 h/ X7 `; @ - #define STATIC_SHIFT 37 O% K9 Z, b3 I# Z. l& o3 }
- #define TCINTEN_SHIFT 202 P! E) P- p2 d5 C
- #define ITCINTEN_SHIFT 21
" O B# I0 f- S( F2 v! X8 m - #define TCCHEN_SHIFT 22
8 k! C9 P: t% h( ?# s. p" k - #define ITCCHEN_SHIFT 23
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" Q# k8 D! i; W5 Z/ r- static volatile int irqraised1 = 0;
1 w# a( S8 N* p8 C - static volatile int irqraised2 = 0;
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7 [& l* X& r: F' _1 q7 M$ [- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 O. Q+ |$ q7 c% q! c; ?
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- V2 m" q' N! N
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. Q# i8 \& s* `8 B! f! X
- 8 T7 C- A% Y6 J* o
- dma_addr_t dmaphyssrc1 = 0;4 f3 T' K6 F, ?
- dma_addr_t dmaphyssrc2 = 0;
. c$ Z7 J5 c2 y; ^ g - dma_addr_t dmaphysdest1 = 0;/ R7 H( W) ^( S5 G2 z+ M1 J
- dma_addr_t dmaphysdest2 = 0;
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7 ?4 Q1 W: ~7 J6 s4 @3 W, P& Z' V- char *dmabufsrc1 = NULL;/ I' @1 `( t& E% a0 H3 ~- l8 p
- char *dmabufsrc2 = NULL;
) A K/ K. G7 R! a* I! A' ^5 S6 a - char *dmabufdest1 = NULL;( R6 u4 N0 g* z
- char *dmabufdest2 = NULL;2 [' F2 ~" g% x" c, b& i8 H z
- ) @2 u' q9 b) R/ ]
- static int acnt = 512;' \) D3 }& D) b. E
- static int bcnt = 8;( d) ?3 ]+ s9 s% K0 [: U. F: u
- static int ccnt = 8;" w; M0 x7 N) P
, f+ W* J% L3 x Q- module_param(acnt, int, S_IRUGO);% J- k. k5 z# K6 ?. p! D: b
- module_param(bcnt, int, S_IRUGO);
8 y" C+ e9 [5 r2 _$ w6 C9 O6 _6 }. s' l - module_param(ccnt, int, S_IRUGO);
复制代码 , H% b# _( N% \. D; r0 L* A2 @
$ \5 Y$ G6 V3 p. [& U) v) X 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7 Y8 }0 V% E- n; V
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。3 Y, i2 E# R! G, u3 m/ f8 N
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。, R" K) I% E8 _6 ^# x- `0 G% c: `0 a
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