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本帖最后由 yyj 于 2018-1-30 11:01 编辑 M! ~/ l- l4 g) J6 U
- [code]EDMA sample test application
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% D6 ?* S8 J7 N& f% M6 }# J - * edma_test.c) v: p7 n( K2 f" T2 k
- *' C9 M, Y) x; c! i( h5 M
- * brief EDMA3 Test Application9 Z g9 j* H8 l* a$ ?3 e
- *, T& _; M4 g! w/ x8 O% n
- * This file contains EDMA3 Test code.
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, X8 q$ Z. g L3 \9 W- k - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
1 X- {& x0 z4 Z4 o. r7 `* _8 L - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. t6 G- X: K3 z' ^1 z1 V% c
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/- g& c2 c- N0 l- C
- *3 s1 c; `- l( W, O: `$ r
- * This program is free software; you can redistribute it and/or& A' z* Y6 x. w0 Q+ O
- * modify it under the terms of the GNU General Public License as" v- k" t0 ]( i$ t
- * published by the Free Software Foundation version 2.0 K0 H3 n$ d. F) b$ v/ k1 z+ q
- *6 U+ [9 p) a g D4 |- f$ E* X
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any( N( x( [- Q2 I/ o3 O
- * kind, whether express or implied; without even the implied warranty, {* c' l- \5 v% S# T
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the' C6 y& E+ U4 Z q8 e+ q
- * GNU General Public License for more details.) ?3 H9 q" c+ i+ B+ k
- */3 d* I; _1 A9 L5 Q- p
_" q2 G0 |% l6 B/ I f+ y: s- #include <linux/module.h> }. b4 b# o( X9 |
- #include <linux/init.h>
+ N1 S# j, r/ z2 ^. | - #include <linux/errno.h>" r1 j+ M, y$ m6 A: p! ~% N
- #include <linux/types.h># I2 c! K+ Y, C. ~* `2 C; i
- #include <linux/interrupt.h>0 R! N) i9 ^9 |$ T3 u* }
- #include <asm/io.h>
" W* a" T, F5 {$ o - #include <linux/moduleparam.h>' s$ c: T0 b6 e6 h) s
- #include <linux/sysctl.h>
2 \3 A. T0 S4 s1 h& O6 `2 [: G - #include <linux/mm.h>
. B: w: I% T! R. @5 a0 ^ - #include <linux/dma-mapping.h>+ N/ j' N! G$ B- Z: z* p
: ~7 ` s6 X9 n+ F) ~- #include <mach/memory.h>
2 t$ L d, {. Y9 H! g - #include <mach/hardware.h>
, I' j6 d7 C+ M1 e - #include <mach/irqs.h>' Q+ R9 J7 R# ?6 T, q2 o O
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG7 r) G9 Y6 J R; s% l! r) Q
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
* c O# j+ N. [0 [6 ?+ o - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
6 P' ]/ b: O3 ?6 a! ?7 ~) G- X - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
0 n5 D9 R1 C, z& _, l9 x - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)1 X0 j5 n* z/ q6 C$ n
- #else# D4 O' ~# F4 z% p2 d
- #define DMA_PRINTK( x... )
0 H1 a. K% g( H* v9 s: \2 E2 q - #define DMA_FN_IN6 T% @4 C/ S2 Z2 W% u
- #define DMA_FN_OUT3 U h( z" [: ^" |
- #endif
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1 G2 E& ?* J6 s0 `$ ` h. a- #define MAX_DMA_TRANSFER_IN_BYTES (32768): y( ~6 V. v. i) v. o
- #define STATIC_SHIFT 3
: \. B' ]! U& \; O, H7 M$ L - #define TCINTEN_SHIFT 20
& o: N: Q9 J0 y% t - #define ITCINTEN_SHIFT 21, t" ?: Z% D2 K+ K
- #define TCCHEN_SHIFT 22
; V) P& q7 a9 b6 Y - #define ITCCHEN_SHIFT 23
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2 f& R# h" Q% Q$ z: B; j- static volatile int irqraised1 = 0;' P5 j+ J0 C: a5 w U/ ]2 ~
- static volatile int irqraised2 = 0;5 }1 C& v) u# U; @" V
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ d# ~$ i: `3 f% S
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
% T7 K. k9 f) O/ }) K - 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;
+ R# @. V! m8 H6 y - dma_addr_t dmaphyssrc2 = 0;
4 d5 N Q; j: _; n( ] - dma_addr_t dmaphysdest1 = 0;
0 @+ r) P% W0 @# e( e - dma_addr_t dmaphysdest2 = 0;( o+ K- Z2 [$ K' w- @# o2 U
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- char *dmabufsrc1 = NULL;
: ^! \, f$ n+ Y |/ E6 P& P1 e$ U - char *dmabufsrc2 = NULL;/ }& q1 K7 c- u, w( M$ d
- char *dmabufdest1 = NULL;- J1 T) D9 ^0 e1 ]8 s' T
- char *dmabufdest2 = NULL;
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N. m1 n( x5 ]( ?# Y5 E S3 x- static int acnt = 512;
$ N$ B E% `% X% o3 P& k" ^! m) } - static int bcnt = 8;
5 D( {0 E- o$ x! D b/ `3 a - static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);4 o& |0 a$ t2 x) Y) G1 i) r# Q/ F
- module_param(bcnt, int, S_IRUGO);: [9 E- D8 F2 |8 F9 A* P2 [
- module_param(ccnt, int, S_IRUGO);
复制代码 ; {9 m; |4 ^$ p& C9 y7 O: u: ~. @- W2 g0 P
& c, n5 E( c% f X( o 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 A$ l. _$ t5 j1 y6 n
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。
* b% h/ m' ?" D8 [3 B' _# u 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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