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本帖最后由 yyj 于 2018-1-30 11:01 编辑 $ a4 w- K4 Q# i- o/ W' _! S
- [code]EDMA sample test application$ r: I$ B P: _- L/ I
- /*
1 o+ y+ M. M- n$ o; F% B2 L8 w( l9 x - * edma_test.c( c% n B& ^- k6 M' v( `
- *
3 x$ c7 R; n. o7 Q9 l/ N - * brief EDMA3 Test Application
; [7 c; A6 B5 o/ t - *
9 R3 M& Q7 \; e3 y1 ~3 W - * This file contains EDMA3 Test code.: y; X9 b, K: }' P( z9 B
- *
# \+ Q4 c2 Y" v9 J1 T9 c - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
, U u6 N; z1 ^, y0 t$ ] - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
1 j" O* ^% z, w+ j: d - * TO CHANGE.% U8 Q3 P/ j. h7 k; a* S# T
- *
9 s0 i( s8 P, b+ | - * 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
2 p! G' O# C* v% M- l( q% q - * modify it under the terms of the GNU General Public License as0 `5 S' }, ^4 M6 }7 z1 r# I
- * published by the Free Software Foundation version 2.
' N+ R0 R. L) G8 ?: U6 H* @+ d - *
3 G4 o* `- `; W! J/ F* @; P$ ~- R - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
8 @" y$ O7 ]5 g2 [ - * kind, whether express or implied; without even the implied warranty
* ~. {3 \" v" E! k2 u1 J8 D - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! Y$ R6 r) T+ L7 x6 w - * GNU General Public License for more details.
: I. _3 r; Z: Y: v# m - */
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- #include <linux/module.h>7 {7 ~* J( E! N4 I" e6 m7 T/ I
- #include <linux/init.h>1 @1 w4 K% [+ p3 Y j/ t1 H
- #include <linux/errno.h>
4 M/ A2 a2 c1 x! n6 U+ |; r - #include <linux/types.h>
7 T( U% b) W' \4 v5 Z - #include <linux/interrupt.h>/ \1 A+ ]5 E, S5 t4 _
- #include <asm/io.h>9 d' c9 A+ o, E5 j8 g
- #include <linux/moduleparam.h>9 f1 \( ~- u/ [9 F- V T; j
- #include <linux/sysctl.h>
/ S" }6 ]* k" t8 _ - #include <linux/mm.h>
, L- ]* J9 M/ I4 B - #include <linux/dma-mapping.h>. L# @ z/ o" Y6 u$ S
4 W8 g) l6 R1 v# t/ W% Q) _+ ]1 Y/ P- #include <mach/memory.h>
& I0 d8 T0 Y, j/ h - #include <mach/hardware.h>' R' i9 O" a) P4 `: W
- #include <mach/irqs.h>
; `$ u' ]/ D) C x+ _ - #include <asm/hardware/edma.h>/ C( W: d6 P \7 S( ?, p8 C
/ J' r! {1 R: S1 R, T$ i- #undef EDMA3_DEBUG& o* r3 }2 d1 ?$ U- p. j6 t3 }
- /*#define EDMA3_DEBUG*/
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) h' ?6 g8 B- e! V t- #ifdef EDMA3_DEBUG& ], ]0 e* q6 n1 o* h1 z/ D2 z0 o
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
& }8 x/ j/ S8 v - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
5 Z( o( j0 T* l' G7 E% M - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__) A7 M1 I- s+ ^
- #else5 Q3 |& E% d) D" J$ _" n4 x
- #define DMA_PRINTK( x... )
& U, n3 q: `6 D* N9 @ - #define DMA_FN_IN
# }1 N( m1 t3 i9 r1 i, T3 ` - #define DMA_FN_OUT: n5 T* _% L" H- R' F' c
- #endif
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/ T- i0 i7 G7 s- t1 s2 I0 Z- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
- _5 |9 }5 S F/ q# H1 T. u1 u - #define STATIC_SHIFT 3 X' \% ]! r) L8 ?5 h/ v% H( n- ?
- #define TCINTEN_SHIFT 20# T6 ] M3 K7 I( s. w8 C H! T
- #define ITCINTEN_SHIFT 21. v f5 k# b- S% W9 I
- #define TCCHEN_SHIFT 22+ ^) [4 {8 o. ]' O# G, a1 {# b
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
1 L p; n2 ]8 S2 r: H& ~ - 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);3 z# D6 @% S" ~8 P, x; L4 C
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) F% P+ w5 V0 i0 d/ O3 R - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 {2 n9 o5 H1 @0 w, N/ {
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- dma_addr_t dmaphyssrc1 = 0;$ S; N3 `/ A8 k, D+ b3 T8 O
- dma_addr_t dmaphyssrc2 = 0;, ]( L# {( x) n% ?0 k8 ^6 C8 ^
- dma_addr_t dmaphysdest1 = 0;1 z& |0 ^9 ]5 {7 l1 \% ^
- dma_addr_t dmaphysdest2 = 0;2 E0 T( I W' \' {8 I; Z
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- char *dmabufsrc1 = NULL;, u+ v9 v" J: X, x( u6 U* z
- char *dmabufsrc2 = NULL;
' j* f3 I+ m9 Z' l% q - char *dmabufdest1 = NULL;
6 r3 Y7 z; \0 V - char *dmabufdest2 = NULL;9 P9 X' R) X; u/ m0 ?4 X3 |2 D
7 k. w4 `4 A9 l) p) X- static int acnt = 512;
4 g; E6 m) B/ n1 w - static int bcnt = 8;
* R/ h* N) A0 Q0 Z - static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);) A$ T# c0 d+ H4 q! Y
- module_param(bcnt, int, S_IRUGO);
' r) M. i1 Q* K9 `8 x/ [ - module_param(ccnt, int, S_IRUGO);
复制代码 - o( H2 L* F2 J9 g2 m) z0 x
8 A; X2 z' j% K& [# P4 v t 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- P* {& M0 R5 q, N5 F( A8 a- l6 q) q
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。
+ m: Y6 j7 k1 B- ]; f" O& v 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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