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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ( E# ]$ s5 A3 k T! A4 P& g7 a
- [code]EDMA sample test application
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- * edma_test.c6 @4 Q5 C4 X5 H6 x& \
- *) g/ m) |( O, w% P3 m$ y) a2 Z6 w
- * brief EDMA3 Test Application
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1 G7 d! ]6 Y" e$ u- [ - * This file contains EDMA3 Test code.9 u6 G7 I7 M# j* x2 f9 a: J
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- h3 D3 p) x) g6 `
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT$ _+ W/ D7 x, P4 g! O1 n
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( A5 }+ ^5 d) O
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- * This program is free software; you can redistribute it and/or
& j5 @1 H: V0 N1 y - * modify it under the terms of the GNU General Public License as5 ?* }) {) \/ e9 g) x# I. @# M
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
5 \0 t/ x6 L$ E - * kind, whether express or implied; without even the implied warranty
* l: F; Q. H3 I2 G* ]1 j) Q - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! E" E. U8 `0 g - * GNU General Public License for more details.6 ~ y' b1 \! I2 e" _$ Z
- */
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! \. l# d* k, V) I: P3 T: y' X- #include <linux/module.h> D# a+ e- }) g7 M$ U) S
- #include <linux/init.h>% f' o& x( u/ k; u3 T
- #include <linux/errno.h>
/ v) f/ e+ i, L8 H/ s. }2 F; m% v - #include <linux/types.h>
1 l' u4 {+ I3 v* P8 C4 F - #include <linux/interrupt.h>
- n: Z& U1 C( O0 i) P/ I8 @+ E - #include <asm/io.h>1 J* f" K3 D) \6 E
- #include <linux/moduleparam.h>0 \' `) s+ B, X9 L
- #include <linux/sysctl.h>$ B9 v9 q1 n4 e" B! n
- #include <linux/mm.h># j) t1 a! L* ~$ B) A% B6 J# E
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>/ o f3 f/ F. V9 K2 T- T9 B
- #include <mach/hardware.h>$ \2 z" y' m% M& T
- #include <mach/irqs.h>
% f1 O1 `% U0 `: R - #include <asm/hardware/edma.h>5 B$ O: e# O9 k8 E
2 [/ H( ~7 G; Q( l$ J) _1 q' E- #undef EDMA3_DEBUG/ Q! E7 P0 b/ l/ J. M# o2 B# \
- /*#define EDMA3_DEBUG*/
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* D) b+ I% Y* i9 y$ R0 n- #ifdef EDMA3_DEBUG
+ R: W- m2 z( o( I [0 n! d/ d2 _ - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
! C) _& ~, ?. X - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# |5 Q+ |. c! d% \2 P
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
( N; k5 q8 J* ~( V8 [* y$ s$ ?; a+ y - #else
& p) v Q! L% u- u* P - #define DMA_PRINTK( x... )
6 s) E3 a. `1 ^% g$ e - #define DMA_FN_IN3 c. |3 K0 F1 F8 o
- #define DMA_FN_OUT
3 ]& c; J- K$ ~( R6 | - #endif
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, t2 s6 R+ b3 m" |- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
# @5 `) N0 k% @+ Q) u! t1 i - #define STATIC_SHIFT 3, L* P: `' a3 V: T) L* m: \9 h
- #define TCINTEN_SHIFT 206 n4 R+ t9 v/ ?
- #define ITCINTEN_SHIFT 21
9 {8 N7 ~% W& k, V" I ~ - #define TCCHEN_SHIFT 225 n/ D. v4 q5 `. M
- #define ITCCHEN_SHIFT 238 p8 s' W, u8 R1 x
8 ~6 ~, @; h" }! H- static volatile int irqraised1 = 0;
3 Y" l( ?. O! t2 E - 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);
+ W# v0 F% @1 |; k9 d3 u - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 j, Q. W9 T8 ]' Y6 d! |8 e
- 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;5 }( i; z: v: w' i
- dma_addr_t dmaphyssrc2 = 0;& H% ^* j& `8 \2 ?" l
- dma_addr_t dmaphysdest1 = 0;
; Q; i6 v( R. H# w* A8 d8 o - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
$ H% o2 `' E" S% g" s; F - char *dmabufsrc2 = NULL;
+ ?, `7 c. U8 h) N$ p5 Y7 R - char *dmabufdest1 = NULL;6 ^% [8 A, g) ]* U
- char *dmabufdest2 = NULL;
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- static int acnt = 512;# Q0 ~; `, i& N9 g0 \
- static int bcnt = 8;
2 ]2 O# m9 e! z% A7 z( h - static int ccnt = 8;* ~2 `# `( ^& w
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- module_param(acnt, int, S_IRUGO);" ~( f$ z# }$ F$ l% S. @% S3 H
- module_param(bcnt, int, S_IRUGO);
- s- b/ }6 ~/ m2 k6 m - module_param(ccnt, int, S_IRUGO);
复制代码
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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$ F' F. f, ^, `
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。
5 Z. @ i5 t t3 J, c# M4 @ 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。 e* U, J( y( n- ~) k
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