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本帖最后由 yyj 于 2018-1-30 11:01 编辑 . {7 U4 R+ I: b* \
- [code]EDMA sample test application3 m% r# s1 W# h& J+ G W$ y
- /*
8 i9 {) B G, B& q m" T: l - * edma_test.c; d3 ?3 H) A" Z) D1 N
- *
% ? \4 R# D& x - * brief EDMA3 Test Application% {" V6 P7 I7 ?: P. H
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- * This file contains EDMA3 Test code.2 O) r9 [3 M, k& V- ~+ p- p7 W; i
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE. ]8 j5 y* S) u- W- P j n
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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' Q' N' w2 x# t! a" j - *
/ C( m1 a' v, J) M% P% ~; O" W - * 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
8 Q, u' g3 k# Q8 R. e - * modify it under the terms of the GNU General Public License as% Y' B1 G2 g: g6 e1 V! z% Y% O
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any: R) Y2 \/ Y% _# d E4 \; i* q
- * kind, whether express or implied; without even the implied warranty
4 ^ ]; l1 P2 Q& Q' n* {3 n9 {$ ^ - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the- w |0 S/ X2 j" T5 d( `
- * GNU General Public License for more details.
# R2 i9 z. @- u - */
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- #include <linux/module.h>$ o1 j3 t# O5 N; E& Q/ [
- #include <linux/init.h>
- W4 x1 X9 t' ?9 ~ - #include <linux/errno.h>
- C+ c2 i$ A9 _( b - #include <linux/types.h>6 w+ {0 r% |: W4 b3 i0 m( s
- #include <linux/interrupt.h># Y: [/ i* O' R0 F3 a! B
- #include <asm/io.h>" B: X4 p3 o& K
- #include <linux/moduleparam.h>
. L3 C" I( i( C - #include <linux/sysctl.h># B0 G, x" x" M; i
- #include <linux/mm.h>
6 J( ~- C5 Y+ ~% ~. A - #include <linux/dma-mapping.h>& M" r4 P# g5 ?* T) F
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- #include <mach/memory.h>3 |* v# O# q! Y0 g
- #include <mach/hardware.h>, M$ b& u$ c9 t; J" ^) ?
- #include <mach/irqs.h>
, q) Y {! U; X+ F+ V - #include <asm/hardware/edma.h> g3 }& b3 X3 z/ }
$ C% B# A: s7 G4 d9 Y+ c+ a( @5 K- #undef EDMA3_DEBUG% k& J. T) G) X, }" x. @. t# l
- /*#define EDMA3_DEBUG*/
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7 Y v6 g9 O1 ?! ]- #ifdef EDMA3_DEBUG G' {. Q6 V* o1 M
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! t8 |2 J; Y! h
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)8 f! w; g6 O1 w$ D# ~$ O' A
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)) q3 W% T* u* |1 q$ Q0 y
- #else
2 v4 M) l* r4 j v+ C8 _2 S, U - #define DMA_PRINTK( x... )
: j& D- b; t4 W9 c8 L - #define DMA_FN_IN
8 s' f! [( }/ d7 ?# I' Z - #define DMA_FN_OUT! z! O- u1 ~+ `) q! M4 C. C4 K+ m9 } H
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)% t9 l: f ^' w& e# G6 X5 m4 ]
- #define STATIC_SHIFT 37 A, q( r, s$ U0 R8 r
- #define TCINTEN_SHIFT 20, a3 r( x- P9 r( d" R
- #define ITCINTEN_SHIFT 21( b8 m6 q. J5 S3 `9 G# ?. l+ Y7 S
- #define TCCHEN_SHIFT 22
" N# G L5 a0 D$ }- _ - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;. d( a7 b& _$ m( e% x
- 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);
1 w" ~: z3 C3 C- x: `2 T* Q - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
0 u: h2 q) w$ { ^* w) C. I+ M - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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/ Y4 \8 h; S" B+ d9 R5 C- dma_addr_t dmaphyssrc1 = 0;
& E1 @1 Z. a U' \3 b. M - dma_addr_t dmaphyssrc2 = 0;" | r/ p0 v2 m
- dma_addr_t dmaphysdest1 = 0;
' O! Q4 w7 i9 L$ ^% ~+ U - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;. o( a6 c5 k- [( [( u! t' Q: o; i" p
- char *dmabufsrc2 = NULL;: h6 v0 p2 G) D2 v" H; `( C* n
- char *dmabufdest1 = NULL;
9 U& C9 W/ q- X$ d! X7 V: I$ z1 f - char *dmabufdest2 = NULL;
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- static int acnt = 512;0 `' C' H' C% \5 l* m; j% ]2 A0 {
- static int bcnt = 8;* d) _2 {9 H8 j, w+ F" Q j
- static int ccnt = 8;+ j! z0 W5 E( c* l8 D
% I1 o* {0 X6 D: i; G: _5 x0 ~- module_param(acnt, int, S_IRUGO);
# R6 I( U ~2 D0 C - module_param(bcnt, int, S_IRUGO);
- e5 Z8 Z$ _. _( ? - module_param(ccnt, int, S_IRUGO);
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2 d# X) A) C( ] 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- y% l# M) n- ^! B; U9 _% u6 s4 K
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 ]2 A% M) d- ^% E7 T R7 ^4 _/ s* e 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。 K: o+ Z" }3 h3 O/ k, n
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