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本帖最后由 yyj 于 2018-1-30 11:01 编辑 % m. z9 Y. H4 S' d3 ? e4 ~
- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application( V2 r+ h+ x' g* d9 j; r! ?7 E8 b% l
- *
: I+ H9 n8 O/ c! _& S! x8 q8 R1 l - * This file contains EDMA3 Test code.
4 H5 D B! c8 u, u3 ~ - *
& w5 k% M- w* ^; N9 m* Z* z3 ^ - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
& e$ I, r$ n& X& d9 n - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
& H8 R W$ V9 [9 q& ~$ s - * TO CHANGE., \4 y* W/ G8 J" o Y8 |9 m$ _
- *
, P4 P/ M, C0 Y, t - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
) ^8 n/ d' R8 s. j7 ` - *
4 M& C6 y1 n! y2 k) V; }" }: _8 G - * This program is free software; you can redistribute it and/or* q8 \. z# c1 Q$ S
- * modify it under the terms of the GNU General Public License as
7 H& }' j/ T" a5 L4 G - * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
& Q; Z5 i$ {( R - * kind, whether express or implied; without even the implied warranty
0 H1 F0 p5 x9 ]' W' k+ H$ w - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the" d" q& K; i, p- f N6 Y: e& |8 H
- * GNU General Public License for more details.
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0 {/ v9 B" A& z" @- #include <linux/module.h>0 D) F' v/ S' C. U" U: @
- #include <linux/init.h>1 l1 j6 [* t$ z, c: t
- #include <linux/errno.h>, h0 q' B6 I4 }$ u# m8 G; \( L
- #include <linux/types.h>+ q: ?" L A) Q4 }& K2 P% S
- #include <linux/interrupt.h>! T" B: z) ~; n5 g
- #include <asm/io.h># Z4 \! A5 X9 Z: J6 Q
- #include <linux/moduleparam.h>
( s5 o! h- }# ] P$ ^, s7 w( r - #include <linux/sysctl.h>
2 Y( G5 q. R3 r' Z- d& A - #include <linux/mm.h>' x* |& L- v& r
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>6 b/ K1 u1 P$ a L. ^9 M, j, ~/ l
- #include <mach/hardware.h>0 E' g) i4 U3 ?# b' P& b, H
- #include <mach/irqs.h>3 {7 J% G5 m+ f' T
- #include <asm/hardware/edma.h>
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" D* p4 B8 i7 ?0 Y5 ^; @- #undef EDMA3_DEBUG
* W6 s2 P0 R }- s' c! P; h - /*#define EDMA3_DEBUG*/! ?7 T& C: X E; K& t# [( z3 Q
: A; t/ K' i0 ~' P3 r- #ifdef EDMA3_DEBUG& r- F! |7 q1 X' F6 Z3 q: l
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! ~' J# o0 H! R
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)0 q5 P4 y8 A1 T1 H- Y* W
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__), b8 w& H+ e( C" ]6 m1 E# J
- #else& U4 d `; M0 ]
- #define DMA_PRINTK( x... )1 b. a2 Y! Y9 ~% K0 @- [* ~
- #define DMA_FN_IN. T$ z/ A2 j7 E' l- V" L* X7 p3 d
- #define DMA_FN_OUT
: {+ y& S! w: s+ U9 e) b$ K - #endif
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( d2 b' q( L5 ]7 c( g- #define MAX_DMA_TRANSFER_IN_BYTES (32768)( @7 X' Z- `- X% b
- #define STATIC_SHIFT 3
$ }1 R e- C6 A% ?6 A - #define TCINTEN_SHIFT 20
, ]( T7 ?1 Y2 \( ~5 O6 ? - #define ITCINTEN_SHIFT 21
; l' H" i5 x1 m: R& _ - #define TCCHEN_SHIFT 22
; S; f4 x) E' j( |" u' C& S - #define ITCCHEN_SHIFT 238 W6 a- Y. X: J' m* ^' e& s
6 R y% y: i0 `7 T: K1 ^- static volatile int irqraised1 = 0;
- i! c C# i& Y5 w1 ^: s - static volatile int irqraised2 = 0;5 A$ b0 t! J0 s$ a! U1 H4 J$ j
2 p% g' j/ C9 G% P+ i1 \- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) @, E! H; m4 s7 \7 Y; I2 S( R - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ \+ {5 l. ? ~, `) v1 M, _
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 p% l4 U1 L7 F7 w, J& S& M; \0 B* g' D
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- dma_addr_t dmaphyssrc1 = 0;% F9 p! z# i$ p/ B W: t
- dma_addr_t dmaphyssrc2 = 0;3 w, {& s" T5 j! r, w
- dma_addr_t dmaphysdest1 = 0;* j7 @0 G6 o- J) s
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;. v J! _0 D( B3 i @: Z
- char *dmabufsrc2 = NULL;+ B: L, f8 S! g. ?+ U! V
- char *dmabufdest1 = NULL;* E( y% h* ^3 x9 Y3 ]- g1 Z
- char *dmabufdest2 = NULL;
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- static int acnt = 512;. {" @" n: @: c. b
- static int bcnt = 8;6 I6 d2 W! Y( g" \: p, H
- static int ccnt = 8;# F& J$ P D0 v2 C) _; s
" ^6 o1 b) O# T+ H- module_param(acnt, int, S_IRUGO);% |6 P8 v+ V' X/ @$ I. Q5 m* Z
- module_param(bcnt, int, S_IRUGO);
9 _2 G r: |& K6 n8 G - module_param(ccnt, int, S_IRUGO);
复制代码
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6 v# ]# s8 w/ U Q% Q; R- j* 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! R- H, s: {+ A% z! i
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。; i; ^6 g! V, W. l- B3 r
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。) x4 t) T2 ^. Q0 W3 {* |
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