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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ; A1 V6 d* v/ p3 R' F5 g' C. l. y# _
- [code]EDMA sample test application
- h7 ]7 R$ w0 v' B/ Z2 h1 E. a& P - /* S! N1 B- a( K1 x
- * edma_test.c
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; R, \1 o! M8 I; C- {$ ~( S7 S - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.6 o! ?$ b0 f. C, r
- *
5 ]4 p& W e8 v, @/ w$ p0 c4 S - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE. [1 p2 U$ a% |+ N6 c8 o% q
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
; R, `5 w4 M" z# g - * TO CHANGE. x& Z! ~4 ]. L" _2 H3 @
- *5 H1 I, Q4 q; ^- L" }+ H
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# ]9 A( i* d# d$ G! S2 U: R: o: C
- *: h- `6 K) ~1 m5 }
- * This program is free software; you can redistribute it and/or
( W/ S6 e% b, n8 v* B) S( D/ y- Z - * modify it under the terms of the GNU General Public License as
) L- W# _$ P9 L7 w0 @* |2 m - * published by the Free Software Foundation version 2.$ c% i: f1 P v! T; j
- *
U9 O) T, Z. l# v7 ~& [, u - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
4 e$ B& g2 P& ?* b - * kind, whether express or implied; without even the implied warranty
, E0 _( X4 F8 v) w - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
, v& x+ C+ k3 e! A( c, }( G - * GNU General Public License for more details.4 t: G. d1 Z8 o" Q$ S2 a
- */
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- #include <linux/module.h>
9 \2 ~( ~( h) D - #include <linux/init.h>. Z ^$ u' z! l8 y' Q
- #include <linux/errno.h>
5 v5 V: |/ [. R H( M+ q6 A - #include <linux/types.h>
6 v( R' [7 e- X% J% m& j( j - #include <linux/interrupt.h>- b# Q/ N" n" L5 A, C. b
- #include <asm/io.h>/ v+ N+ G) r. F% U. q/ i# O0 C# h
- #include <linux/moduleparam.h>$ y" h: V* H9 s& J& U `
- #include <linux/sysctl.h>
% z) l" M1 @& \, n - #include <linux/mm.h>
" r; k4 B( s1 L0 | - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
$ P+ u4 r( a) d& \( Z5 @2 o - #include <mach/hardware.h>) V' X8 ^" K" O! K6 S
- #include <mach/irqs.h>) O( k& F& T8 `# D$ B9 p2 l: L" w
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
" m3 o& R6 O0 R, k/ G# S% w - /*#define EDMA3_DEBUG*/" j' h2 c; |! {. M, Y: @
+ }9 N# m3 j% z2 |9 l- #ifdef EDMA3_DEBUG1 O6 {2 S9 i: |- _
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 ]' Y, Y! x' ^5 |, [" l
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)! r9 Q7 j* J% U) G' w) j
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). I- [3 U+ ~) k" I
- #else
# W# t1 A* M- M; R1 E - #define DMA_PRINTK( x... )* T! M' d6 Z) K9 k8 H/ r8 K1 ]' J4 ?
- #define DMA_FN_IN
) P" y! e2 Q5 V/ L) ?: l9 t/ {) i7 } - #define DMA_FN_OUT. [1 n8 _* \, D
- #endif, F, b r/ Z/ s, n% o i9 x( h# Y
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768): g+ V0 H% q$ s$ i& U
- #define STATIC_SHIFT 3
6 h$ `! I1 R" i0 @9 I. }5 B - #define TCINTEN_SHIFT 20$ b) @6 Z. p. ^$ p
- #define ITCINTEN_SHIFT 21+ _" P. t' L8 f' ~$ b3 j$ A
- #define TCCHEN_SHIFT 22- e; K. \- Q3 X; E. {# K
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
7 z% O. N$ J$ K& O+ n8 a - static volatile int irqraised2 = 0;
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& i3 E2 ], o( U, B. a! d- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
% T# h0 o7 i& A$ Y4 I$ b - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
- j, ^- V9 j ] - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 }8 a" `$ I1 X* T
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- dma_addr_t dmaphyssrc1 = 0;& f2 L5 d- y2 L" a$ J: L0 Y, j
- dma_addr_t dmaphyssrc2 = 0;
: x, S4 T0 [ s& C( E$ P - dma_addr_t dmaphysdest1 = 0;5 S3 P6 E2 {2 ]; ^/ [
- dma_addr_t dmaphysdest2 = 0;5 l: v& k, A" x+ H. I
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- char *dmabufsrc1 = NULL;; [7 B7 \- d5 O8 N
- char *dmabufsrc2 = NULL;: {. I: h! ]* {/ ?: C" a
- char *dmabufdest1 = NULL;3 @0 S2 I X# H- H, _0 K) ]* }5 G
- char *dmabufdest2 = NULL;
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]2 P+ u2 G; F' s$ T3 C% r/ n0 l$ M- static int acnt = 512;: c) B5 U$ @* r
- static int bcnt = 8;* Z4 S! \2 P& V; S8 s
- static int ccnt = 8;: o$ O4 ~2 f: D. `% Z
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- module_param(acnt, int, S_IRUGO);/ k1 q7 x/ k% X3 E/ E6 N& R
- module_param(bcnt, int, S_IRUGO);
5 n; a& t7 B$ Q6 {0 }) f& V0 s - module_param(ccnt, int, S_IRUGO);
复制代码 + U5 B& G: m+ c( z0 T* F7 h# t0 P. ]# e. j: f
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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
/ C4 l* B: i+ Z) Earm-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。5 Z1 u* O' R0 j' y
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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