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本帖最后由 yyj 于 2018-1-30 11:01 编辑 , _3 S' K) O+ \
- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application+ j) d u h; I( s
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- * This file contains EDMA3 Test code.
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|+ V& A/ K' | - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 O" q0 p' c3 b- r. O8 w
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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( w3 c0 B$ I* M. q& I - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
4 X0 e$ E6 t1 ?# o - *
0 y: a g7 E6 S, ~ - * This program is free software; you can redistribute it and/or5 v- G" g; f( t1 J- E0 n, m
- * modify it under the terms of the GNU General Public License as! b3 S4 R! J2 F* |& p7 U7 X
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
; }9 q% Q( k7 e5 C4 p - * kind, whether express or implied; without even the implied warranty
4 `% X% Q9 [, O h! _ - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the _( ~3 @7 Y! W
- * GNU General Public License for more details.
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3 ]9 f; K2 |. s" E/ o: z/ ~& L: z- #include <linux/module.h>
2 [. U. |: t$ D' Z - #include <linux/init.h>" H }4 X3 d6 J9 x8 e9 X
- #include <linux/errno.h> X' J% q9 s6 f7 ?1 h$ o
- #include <linux/types.h>
( {' a ?" O" b9 \- G! N - #include <linux/interrupt.h>% X/ P# y8 @) V/ ~5 K/ D
- #include <asm/io.h>& s5 K) R+ _6 r9 t8 M) u. ^" Q1 ?
- #include <linux/moduleparam.h>
7 R# D" b- R( [! Q. M - #include <linux/sysctl.h>$ u2 o. K+ S# ~/ m) k j! s
- #include <linux/mm.h>* e7 L4 `4 v8 k. [( H7 J. d
- #include <linux/dma-mapping.h>" H# m9 T% P& w0 Z3 i3 I
6 L. v3 |2 S( a( i X% C8 a. s7 F- #include <mach/memory.h>
9 @) ^0 e# r0 y$ A - #include <mach/hardware.h>' J8 N6 o" _2 L- |" T# x! x' c
- #include <mach/irqs.h>
4 O+ @' O& {" ?2 G# u; C: R. l, \; n - #include <asm/hardware/edma.h>+ _6 X( e3 U. F8 h2 j5 |7 ~7 q
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- #undef EDMA3_DEBUG
; b- F& l! |4 C+ q8 b: X6 z - /*#define EDMA3_DEBUG*/
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- s( t- k7 u. t7 k' Y3 E- #ifdef EDMA3_DEBUG3 Y2 M8 H# b; ]- A* v, L/ ]5 F
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
; w/ k. C8 p) e0 O6 c - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
- c, V2 g' f% C, R5 ~8 ~& \& ] - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
2 W2 d1 C- |0 [ - #else
0 b& Y/ l T _* h0 i - #define DMA_PRINTK( x... )) e7 d) t- I/ M% m/ G8 k
- #define DMA_FN_IN M7 q9 {' H1 u4 \- m P0 j4 r
- #define DMA_FN_OUT; ]5 }9 @% z+ i( [3 q. X
- #endif
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8 ^$ F$ N2 A i- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
6 w, c0 G4 c0 l/ K4 w7 |1 E3 N$ c+ b - #define STATIC_SHIFT 3; E( Y5 d; I, G F3 [
- #define TCINTEN_SHIFT 20, F1 |" q' n/ R/ u
- #define ITCINTEN_SHIFT 21
! l/ M- k$ g2 G- t: W# u0 ? - #define TCCHEN_SHIFT 22: ^, z5 a! _0 C4 S& A1 ]
- #define ITCCHEN_SHIFT 238 C% o9 x" U* _* Y7 o
& x3 u: b% E: Q. v! Y- static volatile int irqraised1 = 0;
) A# A" d0 v8 T5 O; v: J& J - 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);
! ^$ |, e* l" ^" g( ] - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
4 Y; i9 k$ |8 j - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: U }; ^, `! P3 P3 {
' h" w/ b/ A3 j' D; A" }, ]- dma_addr_t dmaphyssrc1 = 0;( A7 {8 v+ A# S2 m/ {6 j# z
- dma_addr_t dmaphyssrc2 = 0;) {* Q4 D. }2 G* A. P2 N c7 n2 P
- dma_addr_t dmaphysdest1 = 0;
% E2 y8 f" o O, x* S - dma_addr_t dmaphysdest2 = 0;
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: ]: @ j4 |/ d1 B0 J( Z- ^5 o- char *dmabufsrc1 = NULL;; }4 O; ~: d% J1 P7 A: Y
- char *dmabufsrc2 = NULL;
! B8 R% I8 e1 j8 Z7 Z; s& P - char *dmabufdest1 = NULL;% ?0 o; i0 X' e: m8 V8 [8 h
- char *dmabufdest2 = NULL;
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- static int acnt = 512;2 Q& Y/ _( R8 q+ @* u: ?8 |1 y
- static int bcnt = 8;5 \8 }) e$ |) H! m9 }1 m
- static int ccnt = 8; `3 D4 b& n$ ?; A+ C! M' N/ S# _
; A4 f: q* ^* {, \9 U7 p- module_param(acnt, int, S_IRUGO);
) |7 M# u. N! b' I - module_param(bcnt, int, S_IRUGO);
P5 a% d8 S" W$ ] K - module_param(ccnt, int, S_IRUGO);
复制代码 9 p7 @$ D9 p$ A- r9 V! P
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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: Y9 C0 O2 ]7 C) Q4 Y3 h
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。
2 n7 ~- ]2 P7 T8 F1 `$ { 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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