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本帖最后由 yyj 于 2018-1-30 11:01 编辑 , b- ]5 s9 A% G, g
- [code]EDMA sample test application: ], z$ S' O: f+ ^9 a1 V- I
- /*
5 e: B! O- e& }8 b - * edma_test.c
' n& J0 z9 x; s0 [1 U1 S5 w - *
" P3 k Z) @7 K: C+ q - * brief EDMA3 Test Application5 s& d0 @: t' Y0 E [7 s
- *
: x2 b: I6 ~' V& }# j) f, |3 D4 W - * This file contains EDMA3 Test code.0 d$ ]7 R( w5 r7 P* t
- *# c4 @! \. K. J4 A
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
, v$ s9 D" m2 z8 ^; H - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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- *9 P+ _, h2 j- R$ R Y6 S
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 ~* u& m0 ^" X! X s) n- U. r
- *
* Z# k8 d- N7 y9 K! f6 v, Z - * This program is free software; you can redistribute it and/or. m, R1 [9 O9 u9 v+ o) p# Z8 g/ ~
- * modify it under the terms of the GNU General Public License as) `( Y/ |" Z+ I) \/ G2 a* O* r( B
- * published by the Free Software Foundation version 2." D3 p' c5 b; u
- *) A: s7 e; x7 [5 L4 [( v
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- F: O: F) E9 S& [' W- H3 l - * kind, whether express or implied; without even the implied warranty& P" s5 q- |& H, U' A |' l/ C
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 D E: j0 k; R- h
- * GNU General Public License for more details.
* |" |3 W9 T# B: G - */3 V$ o+ x" v+ c, \9 t
4 w ?$ P. I b( {7 B* X7 x6 r- #include <linux/module.h>
9 T0 ~+ d5 K4 T" F - #include <linux/init.h>
+ ^ | `3 m* o- m - #include <linux/errno.h>' d7 I. V& N( l u9 e
- #include <linux/types.h>) G Z8 S1 U; r3 z% Q, C
- #include <linux/interrupt.h>9 h- C, S8 W. A$ S5 I
- #include <asm/io.h>; i+ N8 ?% d- `* k8 @- \) z9 v
- #include <linux/moduleparam.h>
" m/ s" @. U6 q0 A. l. T- t - #include <linux/sysctl.h>
' J, ` j: V# y) a - #include <linux/mm.h>+ v( j0 a% Y% f$ b0 u( o
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>+ e* g" d) Z9 W! P0 e) f0 Y9 @
- #include <mach/hardware.h>4 m$ ^; [; x' y
- #include <mach/irqs.h>
; y- i8 W0 o0 j - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
) W0 Y5 |0 G1 o; e' ~# {$ @ - /*#define EDMA3_DEBUG*/# M1 G4 `9 y) {5 `
5 ~9 x+ P* E: T( `5 F% P" [- #ifdef EDMA3_DEBUG
9 a( d/ Q! H( z& ~% t& H! Z - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- f1 H8 z# d; R. E
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
( r' S. B4 m8 A- h! ^) A - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)4 R2 i0 X2 w w% H+ N" _2 h e
- #else
4 N" Z+ v8 q# v - #define DMA_PRINTK( x... )
0 K1 U1 \' u3 k1 y* h9 E! [5 m - #define DMA_FN_IN3 f7 m$ t1 E# X# A+ L& m! Q
- #define DMA_FN_OUT
' \3 \( L9 ]' ^# \" A8 F! I - #endif
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( y* S8 _% Q$ Y* j/ [7 t- #define MAX_DMA_TRANSFER_IN_BYTES (32768)7 R4 n' l- e; C% w( x
- #define STATIC_SHIFT 3
( Q3 A5 I5 _ ?6 S - #define TCINTEN_SHIFT 205 ^* K8 z2 M0 j4 O& N3 E5 k
- #define ITCINTEN_SHIFT 21
% `8 ^+ \. H B4 @& a# V - #define TCCHEN_SHIFT 22
9 i. e1 x5 @0 {% Q' Q) Y - #define ITCCHEN_SHIFT 23% V- D% E/ X6 d: Z
8 `; p8 Z8 u0 s; C5 Z8 F1 M- static volatile int irqraised1 = 0;
/ E0 q* V8 I3 H) N - static volatile int irqraised2 = 0;
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& B( \/ h. h8 B1 g- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 C2 S. x( {0 `5 k
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( M. o7 y! h+ H! Z2 y
- 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;
6 z. b6 J$ H+ x - dma_addr_t dmaphyssrc2 = 0;- _! g+ `( V" H/ m- @" C
- dma_addr_t dmaphysdest1 = 0;
u& C& Q' X* d7 R$ a2 ? - dma_addr_t dmaphysdest2 = 0;
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0 V, k6 f+ u9 e% a; k: S- char *dmabufsrc1 = NULL;% d1 Q/ O9 ]7 g" A
- char *dmabufsrc2 = NULL; }9 k' G5 x, Y
- char *dmabufdest1 = NULL;! d# h& S. Z0 ?1 m1 g0 I" q
- char *dmabufdest2 = NULL;
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- static int acnt = 512;# O9 e3 V. B- o; h% b
- static int bcnt = 8;
) j" ?# O0 m) B' _9 [- t: P - static int ccnt = 8;! c! c& @, ]% H0 y7 o/ ^
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- module_param(acnt, int, S_IRUGO);5 t5 d3 H8 }" [
- module_param(bcnt, int, S_IRUGO);" [. C, S( B% b3 ?
- 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
, b- D" W/ m$ ^' oarm-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。8 a, j2 @7 g! G/ ~3 S! _* X
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。* N9 j6 P, h8 M' _5 w
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