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本帖最后由 yyj 于 2018-1-30 11:01 编辑 1 h6 @9 R4 I/ J
- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application; q2 o( | J- z' ~
- *
* T* Q6 p1 R9 }- i9 L - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- L$ \+ N, K1 Y- y5 l4 E, u6 k3 ^
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 s# l6 o+ @0 r
- * TO CHANGE." p% `! x3 z8 h" @
- *
/ N3 u0 U! X% n' p7 _: Q1 l4 S9 N - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! M: E' u+ p, B/ V
- *
/ p' n! ?: D7 _5 T - * This program is free software; you can redistribute it and/or
; R: E! O/ r/ A6 p: A# b6 W9 q - * modify it under the terms of the GNU General Public License as
" ]8 y3 B }9 E ^3 { - * published by the Free Software Foundation version 2.1 K, W% E7 L3 U( v
- *
/ Z1 v N! G3 r' G) D# i0 @ - * This program is distributed "as is" WITHOUT ANY WARRANTY of any: X% r; f( B7 S( A: U: K8 V
- * kind, whether express or implied; without even the implied warranty* p/ |) Q% \2 L3 h
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
. t2 w. a# [% h+ q5 `/ L3 U: ] - * GNU General Public License for more details.0 m- P b% Z; I7 n- e
- */
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- Y, Z, q/ k! o0 p9 S( k1 @; v0 e- #include <linux/module.h>8 l ` B- O( R2 t8 G1 P' F! c% C
- #include <linux/init.h>
( S& r2 N3 n' ^8 x* Z w - #include <linux/errno.h>6 y( G' C& C7 U6 v! I
- #include <linux/types.h>
. o. c( ? n8 F. t - #include <linux/interrupt.h>4 D3 T0 E9 i) w6 a- k* }. L
- #include <asm/io.h>
" W+ y7 t. }5 \+ a - #include <linux/moduleparam.h>
9 L7 ~. P- a2 r9 Q6 V0 H - #include <linux/sysctl.h>
$ c6 v# ]$ ^9 k4 B - #include <linux/mm.h>% U; A& Z# `9 @8 @
- #include <linux/dma-mapping.h>5 l- Q) d6 v O
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- #include <mach/memory.h># b! L3 A8 U8 B. D; X0 r
- #include <mach/hardware.h>% E! x, @9 }* u) h3 p
- #include <mach/irqs.h>, \- t. D9 m$ X1 S" Y
- #include <asm/hardware/edma.h>2 G+ g+ {1 c6 o( ?& A |
/ h% \9 Y" ~# r5 ~0 m9 W/ m) b* ~- #undef EDMA3_DEBUG$ o& Z! Q7 P5 u( W4 o- u
- /*#define EDMA3_DEBUG*/
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1 }. z8 t3 f* Q/ ~: T4 [- #ifdef EDMA3_DEBUG
( G' T, U9 o( j/ L. O - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
/ v. a5 ^& d2 R! Z/ _. V# n - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
& P7 w! w2 F/ n- D$ ?2 o - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
# `0 i' o$ \4 n* x+ @" w4 e o - #else4 Z }6 K( g( t1 p; d; b
- #define DMA_PRINTK( x... ), k5 c# y* A+ z) K p' e2 h
- #define DMA_FN_IN
6 }1 D/ @2 V- d2 E - #define DMA_FN_OUT
* [3 e3 @# i/ i) t, S - #endif0 ?7 `5 I/ \4 A. T/ h6 R' J# }9 E
% W4 i) K4 _8 s# d- q6 k( D- #define MAX_DMA_TRANSFER_IN_BYTES (32768)$ _& t: c# H' L$ }* G5 T, ~
- #define STATIC_SHIFT 3
5 p! D$ q" E$ N) P - #define TCINTEN_SHIFT 20
( r% \6 H$ r2 K0 s; H( E - #define ITCINTEN_SHIFT 213 f& R+ R+ T+ k6 k, F1 l6 q
- #define TCCHEN_SHIFT 22* E! O/ w9 Z! p3 D
- #define ITCCHEN_SHIFT 23; ~% U3 E+ I: N4 g3 [! Q2 z5 y
- / M5 m# h+ e, f- m' z
- static volatile int irqraised1 = 0;
& `* G d: D1 u0 P! _7 b, D( b" a# M# T - static volatile int irqraised2 = 0;
! x- a# q1 F& R1 G4 }
! S: k }; S, f2 ^- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( W* v# a1 |. Z k, |4 j9 Y
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); O, I& \- N: B
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 `4 H8 V" L" v5 ~
" h4 w$ g' \6 E" z& P$ K$ d0 v- dma_addr_t dmaphyssrc1 = 0;; t6 i9 e7 l1 C( k9 j! t; {! z
- dma_addr_t dmaphyssrc2 = 0;
$ B5 r* f, l. k0 m# }! j& l - dma_addr_t dmaphysdest1 = 0;& W7 v) Z" F$ k- L) D/ j7 \
- dma_addr_t dmaphysdest2 = 0;
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1 D5 Z$ }, e3 _) F- char *dmabufsrc1 = NULL;2 U* \) d! T/ ?, l( _, ?. S% M
- char *dmabufsrc2 = NULL;( ]; y. Z; _3 y4 q5 Z+ T& A
- char *dmabufdest1 = NULL;
, d5 A- j/ |. ]/ F- _& U3 L6 P - char *dmabufdest2 = NULL;
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9 A! s( O) C) f- static int acnt = 512;6 z2 ~, V6 P) H( U1 |6 u
- static int bcnt = 8;6 P( \9 C! S6 y S3 t0 [
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
: s5 n0 j* M* W& ` - module_param(bcnt, int, S_IRUGO);
2 q3 }$ H& n; k: U) `$ ?# r - module_param(ccnt, int, S_IRUGO);
复制代码
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- g3 |& B) p# X$ |/ |: h' U) d 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
1 p( j1 ]: N" O2 n+ D/ barm-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。
1 C0 q9 ^1 v, Z: c 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。, r$ M8 H2 }' O2 ?4 x
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