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本帖最后由 yyj 于 2018-1-30 11:01 编辑
; {1 L/ v" W* _' O( v* G. q- [code]EDMA sample test application! v& V2 {) k$ T- d. q3 `, E
- /*2 y* n6 S4 d i; J% B4 m8 ~
- * edma_test.c
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- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.
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9 s6 I: c/ M0 w' _8 r) K - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- L2 E' r( ?' J. [. J r& ^* w
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# @1 E8 }& E7 y5 r
- * TO CHANGE.6 `5 O7 { V: I2 J, }
- *
7 m% U4 H6 K. _1 m, d! v6 ], X - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or" m+ c; C% E. [/ V Z# I
- * modify it under the terms of the GNU General Public License as# j5 R- A' q4 \1 V3 `
- * published by the Free Software Foundation version 2.; a# l& j: Y( h
- *
# R/ c7 }, U5 c5 \" ]0 z0 Y( ]' S - * This program is distributed "as is" WITHOUT ANY WARRANTY of any* d4 N3 _3 H0 A, c& {
- * kind, whether express or implied; without even the implied warranty4 f; ?; e3 d8 w7 U4 g& V0 w
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
$ o0 R$ _5 Q* D7 L/ w$ V2 h - * GNU General Public License for more details.! ], a+ }( g( x( L+ K& Y
- */
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- #include <linux/module.h>$ g$ Y! j' f' W
- #include <linux/init.h>
; \4 B! r& k0 V - #include <linux/errno.h>
# D* Q+ X1 V" z" o G8 q - #include <linux/types.h>
- I. d* g( |9 j. N - #include <linux/interrupt.h>9 H4 C* Y8 X9 E( A; x& N
- #include <asm/io.h>$ h E3 u; w; m! A; i& f
- #include <linux/moduleparam.h>
# w5 X+ g% R8 U6 U9 Y ^: t; u* W& J - #include <linux/sysctl.h>5 h9 X ^2 f3 `2 z+ n" n
- #include <linux/mm.h>1 M- I; V! z K& D( ~& J
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>. Q& F0 u9 y, C2 k& f7 N+ Z. F
- #include <mach/hardware.h>
! X' U- w2 q9 e) D a - #include <mach/irqs.h>$ |) R! k& m6 _+ V7 T* b4 G
- #include <asm/hardware/edma.h>5 h3 m& i/ D# K# E( d
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- #undef EDMA3_DEBUG9 _- D6 R. }1 u6 e& }/ S
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
% F! s% {6 X- I- t1 u' g, Y) ] - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
- A/ D9 H; Z* W9 u- y* k - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)' G( j+ M! z- f+ O5 F T6 H
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)% }% h- J9 s* l' g# D* X
- #else
" p0 y. Z: @7 T5 B9 e - #define DMA_PRINTK( x... )1 v9 w4 O$ R, E) J' b7 X
- #define DMA_FN_IN$ S: F* c1 l1 \# S
- #define DMA_FN_OUT
' I0 K. |9 A6 P - #endif0 X$ O& L" X+ Y7 Z! }) m9 Z# j9 f
# k: ?* s8 N7 d. i* c# J- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
* m4 d3 z! w2 O: ` - #define STATIC_SHIFT 3: P4 C8 q, E+ O- u3 [. g( i
- #define TCINTEN_SHIFT 20& K) S3 c, L' w- T4 ?5 c& d
- #define ITCINTEN_SHIFT 218 P* B; U- U& g3 {; a( J1 d; E9 c) g
- #define TCCHEN_SHIFT 22
4 ?' _1 j5 |: g5 o - #define ITCCHEN_SHIFT 23
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6 z! Y0 ~1 \! L, k- static volatile int irqraised1 = 0;# n6 l# b' f) b9 G) M
- 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);& R+ j0 y6 g. p; V7 t& Y
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! c. w! g! j* ^$ j* Y* P, `
- 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;1 U& S; T% [! j$ f* Y- A; `3 J
- dma_addr_t dmaphyssrc2 = 0;
7 B7 u; W. R! J) d8 G - dma_addr_t dmaphysdest1 = 0;
! i) T2 x# C* ?1 C- L5 Z0 |3 z - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;9 i( \; V8 F8 g) Q* f$ R i0 _
- char *dmabufsrc2 = NULL;
' l- U2 _7 P9 Z. Y; {1 u - char *dmabufdest1 = NULL;( v2 N _9 X; X; J) x+ C7 T5 Q
- char *dmabufdest2 = NULL;
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- static int acnt = 512;
5 L& s* H9 U- h - static int bcnt = 8;1 V& p$ j, }- d+ ]2 F" g8 r
- static int ccnt = 8;
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, _0 [0 M( V* H# }- module_param(acnt, int, S_IRUGO);
7 W {1 n' u4 l5 S. b: X$ P - module_param(bcnt, int, S_IRUGO);
! S0 g) J8 N* U2 T, z0 ? - module_param(ccnt, int, S_IRUGO);
复制代码 , Q% L3 }8 `, f5 Z: w& a8 e
/ g3 v4 i* z; u) z! 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. L" ^% W# N N9 C3 U5 F. p
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。1 b/ \4 v, |( G/ 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。
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