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本帖最后由 yyj 于 2018-1-30 11:01 编辑 " w7 K8 n4 T1 h& u4 b% b6 W' I
- [code]EDMA sample test application
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- * edma_test.c
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0 `/ g4 l0 x6 x, Y# m2 t - * brief EDMA3 Test Application1 m) l/ u1 s6 S! q4 `9 Z3 e4 t
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- * This file contains EDMA3 Test code.4 e/ h9 p3 ?$ {5 ]& A0 j( F
- * C% S8 l/ ], E) h( R+ S. G/ X" Q
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
" ]) j, E r" K0 Q& F - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
y+ o% Z- t' L- N - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( V& U7 z) `. M. o5 K3 K2 f1 y
- *) J7 u* D. b$ q$ l; m/ ~
- * This program is free software; you can redistribute it and/or1 r1 p1 [/ k& d) d; G) D
- * modify it under the terms of the GNU General Public License as
; P" Z& L" `& W - * published by the Free Software Foundation version 2.
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& q7 g, o3 ?6 b h. Z - * This program is distributed "as is" WITHOUT ANY WARRANTY of any S- ]6 t2 y* X) U/ z" Q; o. E# X
- * kind, whether express or implied; without even the implied warranty6 b' b/ o) X2 n S6 P
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. ~! I3 F2 l( Y; I' g9 X* c
- * GNU General Public License for more details.; b/ C. N7 J! ^. x' R
- */
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\0 v- X5 m! _6 { p- #include <linux/module.h>8 W% A) ?" a& ]
- #include <linux/init.h>
$ I% H) p, @ X6 q: z - #include <linux/errno.h>/ f* } z/ T3 v
- #include <linux/types.h>/ t+ W- d t& }+ e
- #include <linux/interrupt.h>: r6 y: i0 m( B! x1 g T
- #include <asm/io.h>
( M* |. l. _/ p- I - #include <linux/moduleparam.h>
) T, J' i+ \: Z8 Y - #include <linux/sysctl.h>
1 H+ S1 B- l' `- {( B - #include <linux/mm.h>
/ _! J& N8 B' u% z/ u% N& O' Y - #include <linux/dma-mapping.h>
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" K3 w( _* V; n* j; e W- #include <mach/memory.h>4 x$ S. |# p4 S1 c
- #include <mach/hardware.h>
9 y9 u" c! E: U& T& T N7 [2 c - #include <mach/irqs.h>
) G2 m9 z/ H* h - #include <asm/hardware/edma.h>1 H7 |0 J* T9 O2 R& n
$ E7 X+ `9 H; f6 ^- #undef EDMA3_DEBUG. `5 N; S) M! ~: H, z
- /*#define EDMA3_DEBUG*/
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g, J/ p2 J3 p3 M i% j- #ifdef EDMA3_DEBUG/ a. n) U/ Y( j% H+ h6 b/ H* N. ]! P
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* |1 V3 T# x; K4 J% @$ }4 A
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
$ M! m f( Y. O. w: o" t! ? - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)- y; B/ x/ h3 N& v6 X
- #else5 {! C2 I% b( Q* b [; K8 M, C7 }
- #define DMA_PRINTK( x... )3 v! o* b5 J) w9 ?
- #define DMA_FN_IN
# O5 {; F0 v: ]! b1 U C1 t$ a1 y! | - #define DMA_FN_OUT5 f9 W% ]; b( }" y% H
- #endif N9 | |. @. M1 {3 ^
- 8 @: @, {+ N2 v6 n0 E
- #define MAX_DMA_TRANSFER_IN_BYTES (32768) j z8 D" b7 i+ a7 C6 \9 y
- #define STATIC_SHIFT 3
7 B% m1 U# \1 Z/ r - #define TCINTEN_SHIFT 20
6 \9 D) K: w) L1 M" b: P( i - #define ITCINTEN_SHIFT 21
d! |0 f% l- b0 V5 i) y - #define TCCHEN_SHIFT 22
+ R4 |" Z# x8 d. H - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
/ } J% A: U, G. G; z4 ?/ a3 t - 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);' |' ^2 P* l2 C& d e+ u/ N& d
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) v* _0 k2 v* W9 b7 w0 C0 ]0 i
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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. a* f5 ^, v& P, ]- dma_addr_t dmaphyssrc1 = 0;3 f& S; s, A4 c3 H; c! N
- dma_addr_t dmaphyssrc2 = 0;/ `, Q0 [2 f* d4 T1 W5 f
- dma_addr_t dmaphysdest1 = 0;
! x- {" Y9 ~8 K9 p5 ?9 r8 V1 a - dma_addr_t dmaphysdest2 = 0;
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' n3 r, z* V% z3 o$ s: X' I- char *dmabufsrc1 = NULL;- G( l% y$ @2 {+ M! q* p4 \* j4 N
- char *dmabufsrc2 = NULL; j# P( [' I/ K# W0 Z
- char *dmabufdest1 = NULL;: \( T1 T1 \& J" {5 L
- char *dmabufdest2 = NULL;9 A4 \ N4 s6 |- l9 N) ^
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- static int acnt = 512;
0 Z: \/ J/ k" G, j' u3 o) h7 c, s - static int bcnt = 8;2 I1 J9 [- o/ \! \" J3 t* l/ g) o
- static int ccnt = 8;: Z: |% O" D; m/ k8 H0 {
: P# i; |" A4 S- module_param(acnt, int, S_IRUGO);$ I# d7 Y4 K, H& z7 K% J
- module_param(bcnt, int, S_IRUGO);
$ O& q1 g* Q- k - module_param(ccnt, int, S_IRUGO);
复制代码
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0 Z1 ?8 ]4 m5 D- G% S6 F9 S 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' h( H5 b( k# O \5 z* a9 m
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。# A# J K/ f( x" m
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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