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本帖最后由 yyj 于 2018-1-30 11:01 编辑 6 E! c. x( @9 O Z) z3 g
- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application! e! ]$ C* Q: g
- *4 b* F/ H r/ B5 M
- * This file contains EDMA3 Test code.
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" J: Y" J. Y6 S0 y: p: t - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, Z; X# U+ X$ T# n/ h, {+ V; H
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
: o! ^- K# ~8 W6 h% A - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 ]$ B& I5 I. U" K4 u& X, ]" ^6 A( f
- *# W% n6 S4 u: \4 T4 ^; r9 i' z C
- * This program is free software; you can redistribute it and/or; R) v" Z# Q- [2 z: t4 v, L" B
- * modify it under the terms of the GNU General Public License as3 D9 E s7 z% _! R& B" l
- * published by the Free Software Foundation version 2.3 m& R. l, R2 {; m# y% N" _
- *
7 [0 W6 O% n4 y1 T - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ W( }" X( t- S5 E& n7 | - * kind, whether express or implied; without even the implied warranty
8 M4 q# U5 ~ D' @8 Z - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
: X, y7 I9 u+ e/ K% _ - * GNU General Public License for more details.
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; B3 }9 u2 [; X* [# A# ~- #include <linux/module.h>
4 t1 y2 d0 ?5 X) { - #include <linux/init.h>
$ m8 ]9 d) K3 S7 X+ _# I) ~! D - #include <linux/errno.h>/ x. s( K/ c7 a6 l( ]
- #include <linux/types.h>
- a9 o# O1 K6 h; h7 m a {# B - #include <linux/interrupt.h>5 v( n3 j2 s3 {) B$ g
- #include <asm/io.h>
* l. s% h/ D1 S" W# b5 {6 f8 e - #include <linux/moduleparam.h>0 L: u1 v( ^! g4 `" G4 |0 x/ N5 `
- #include <linux/sysctl.h>
4 F4 ?# Q# }7 D- t - #include <linux/mm.h>
- p, M! M: i, v+ ^- U - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
' G8 \% i* Y0 B1 ^" o- y' `- [ - #include <mach/hardware.h>: `: u' e; l1 C _: e
- #include <mach/irqs.h>
; \ j2 a5 a8 T6 [ h6 ` - #include <asm/hardware/edma.h>
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& N- I6 f, f8 ] W5 w- #undef EDMA3_DEBUG
1 Y+ a8 ~) B$ B; V/ x$ | - /*#define EDMA3_DEBUG*/4 F6 D* P3 R5 {5 |
6 N2 K/ k/ H$ c4 p4 v8 o- #ifdef EDMA3_DEBUG
4 y4 c, U& F( v5 Z6 i* w - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
! M1 x2 I' ~$ `- i8 o L - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
/ p7 X* h$ n1 Z5 m# O1 z n6 P4 W - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)% k* b# v7 R3 P6 u6 i3 u4 O" J
- #else. i/ {% i' i; u! A- n: p. d
- #define DMA_PRINTK( x... )5 z$ h, M' P1 ~" W- D4 M. z
- #define DMA_FN_IN2 |6 E. s7 F4 M! [* f
- #define DMA_FN_OUT
" @# R. }: V6 ]0 A0 O9 n - #endif: D4 }; D; N9 z; _4 J1 b+ {
- 1 X. T- r" }/ z6 r# k, L
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
3 G; Y, Q3 X' k; [0 O) A; e - #define STATIC_SHIFT 3* N7 s- ?& l x( `
- #define TCINTEN_SHIFT 20
V/ [' v7 ~! B) V - #define ITCINTEN_SHIFT 21
9 z: Q0 G5 s; ~' c8 x# @9 I3 m - #define TCCHEN_SHIFT 223 n% l- M: J; D. m' m0 m; ~
- #define ITCCHEN_SHIFT 23/ _" d. `) d: h( u) }) H
- - C2 {. ^/ w% N9 h
- static volatile int irqraised1 = 0;3 B5 C4 L' z% ]( Z* \
- static volatile int irqraised2 = 0;9 A" B9 L& \. k0 I
! t9 n4 w' S$ u, |- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; F0 g$ E" \* r! G
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); q: ]+ q$ G/ h/ G6 T2 r5 f
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& s3 `6 \, _3 j& i; G! V
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- dma_addr_t dmaphyssrc1 = 0;
. P0 b8 p9 E+ v. [/ r+ O - dma_addr_t dmaphyssrc2 = 0;
# O+ D+ l5 T8 M - dma_addr_t dmaphysdest1 = 0;. C8 F( U' }, d! Z
- dma_addr_t dmaphysdest2 = 0;
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6 A% ?& g" l$ }4 `" O3 R8 z8 p- char *dmabufsrc1 = NULL;- Q. f2 p% I1 e. {' ~/ W
- char *dmabufsrc2 = NULL;. Q$ e) R2 E+ M7 R1 @! u
- char *dmabufdest1 = NULL;
7 O8 G$ H3 ^) j2 u$ D - char *dmabufdest2 = NULL;% |+ j6 o& N$ G# ^
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- static int acnt = 512;! D4 b: m2 \- p$ v( L
- static int bcnt = 8;
d9 p1 m4 e# m3 E% T8 I - static int ccnt = 8;5 l# m2 ~6 D. g% o9 W# s
& A" N. `7 a, p. z4 J3 ~: s- module_param(acnt, int, S_IRUGO);' y: Z- I0 r5 d4 ^3 ]4 c$ l
- module_param(bcnt, int, S_IRUGO);
+ r1 b/ @8 [- b0 N7 J. q- E, F - module_param(ccnt, int, S_IRUGO);
复制代码
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/ U0 D* `" c$ u" d% Q# F 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4 D- w/ |( {0 H d! k
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。
0 x# F) z5 }$ J) P& H1 o 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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