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本帖最后由 yyj 于 2018-1-30 11:01 编辑 - W3 m9 }0 q: |) F4 a
- [code]EDMA sample test application
- ?: G1 R, [" h' v0 N" {. R+ e - /*" u% }- }( |; n1 P' J) P" @
- * edma_test.c, Y. D# }2 x0 L2 j7 ?
- *6 g' M% G5 M* K6 t6 n7 m
- * brief EDMA3 Test Application6 W3 m4 y& G3 T$ w, ^5 E
- *
/ C1 N, I1 z/ K6 W1 q - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
5 E: d: \; u4 B( T' L - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
& J/ I4 `3 @% Z9 a - * TO CHANGE.# c3 B# @3 {/ k) W( z+ N6 g
- *
+ [% s3 [: t) f- _. G - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or4 c6 |2 D$ P8 }5 c# v
- * modify it under the terms of the GNU General Public License as
) F" d. z% @% a ~9 K - * published by the Free Software Foundation version 2.
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5 x) R/ N5 v0 m4 _7 O - * This program is distributed "as is" WITHOUT ANY WARRANTY of any+ n" k8 j) l' k2 ]$ S5 k; \
- * kind, whether express or implied; without even the implied warranty
! P) m, b3 Z* E - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% X# C. f, S& {$ }# ]) q - * GNU General Public License for more details.6 P [2 {& j. J8 G3 w
- */
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- #include <linux/module.h>
1 h/ E- L# h6 z- V+ Z: P - #include <linux/init.h>
- V, V, Y; G) F+ u( {9 H3 Q' y1 I - #include <linux/errno.h>6 T8 E3 |& I; Q7 g- o2 e
- #include <linux/types.h>4 p+ b& C: u- e/ q1 s
- #include <linux/interrupt.h>7 B* |$ R/ o7 t4 }* X- K" @" O
- #include <asm/io.h>" K8 p$ l7 U$ c; T" i7 k
- #include <linux/moduleparam.h>
4 y. O8 \2 g4 [% N - #include <linux/sysctl.h>
0 A3 D0 _4 ?7 T( q' | - #include <linux/mm.h>
$ G: z9 A# w* y: E) F - #include <linux/dma-mapping.h>
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- #include <mach/memory.h># X1 a4 V2 {+ L5 M2 m0 j. e
- #include <mach/hardware.h>
6 g5 Z* ?; ]; P! n. n- L9 F - #include <mach/irqs.h>. d; y5 ]' l7 n U9 c
- #include <asm/hardware/edma.h>
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7 e q2 U# `" H0 |3 S, T2 d- #undef EDMA3_DEBUG
7 z$ S( H, l4 f+ H - /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
+ f" [! m% b4 `9 o. H- W9 s - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
& M6 @, q- W& d* G3 H4 I - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ E* U+ k& e+ T9 i5 F
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
& n& h* ^; i1 v2 H' k5 D9 s2 Q3 f/ _" U - #else1 m3 \2 P0 {& u2 q/ ]
- #define DMA_PRINTK( x... )# X2 N5 X' }) h1 Q
- #define DMA_FN_IN
6 ]. {( y2 o$ p$ b4 M1 r - #define DMA_FN_OUT
. k. W+ ?3 R3 U" S* K0 v - #endif# T# C7 V+ p' g/ @) R2 r$ R: \
- ) s P8 X- [5 F! l7 x
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
2 m) |4 Y i' t# P - #define STATIC_SHIFT 30 i" {+ a/ }; e! l, N' U8 E# p0 Y
- #define TCINTEN_SHIFT 20
3 A y. s+ }) G7 c4 R9 Z - #define ITCINTEN_SHIFT 219 t4 w4 {4 ^. I, M x% o
- #define TCCHEN_SHIFT 22+ z# s" c7 A8 C! B1 G9 E
- #define ITCCHEN_SHIFT 23
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) a+ p8 |+ o$ g1 t' s& L8 p* A( z- static volatile int irqraised1 = 0;! y- k+ k0 p5 O6 |8 Q4 W
- static volatile int irqraised2 = 0;$ w7 D! w$ E" I9 `
4 M" O8 A+ i, l6 v- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ X Z5 x+ i* G
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& u- C9 p, r: ?) ?% } - 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;
) C# w8 H J' Q8 z - dma_addr_t dmaphyssrc2 = 0;& }7 D" {, g" b
- dma_addr_t dmaphysdest1 = 0;! H* u/ e( W. M3 b6 r- c# X
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
% y, O ~* }$ V4 B9 q - char *dmabufsrc2 = NULL;
# e. Q T$ u" E7 M5 z b$ T - char *dmabufdest1 = NULL;
5 I6 K$ q: h( P R, l+ h3 z9 e3 ] - char *dmabufdest2 = NULL;6 F$ F! P: o, U, K- v! F
9 z4 b* J1 E, T# D% w- static int acnt = 512;4 i. n, @ d" n- {+ Z$ y
- static int bcnt = 8;
5 p- B7 e! _3 Q - static int ccnt = 8;0 p( E7 j4 W. j$ t& I3 A
/ q0 L9 \4 F4 ^) T* p+ }- module_param(acnt, int, S_IRUGO);
& C: z& J2 `6 C# i- Z1 L* j, ` - module_param(bcnt, int, S_IRUGO);
( I3 v/ q$ I5 O% P - module_param(ccnt, int, S_IRUGO);
复制代码 ! \. _, r; m g4 F5 P2 O$ r/ u
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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
% v1 d! p+ N6 o) T' S4 v% Q0 darm-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。0 g3 B1 M4 B6 {+ A
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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