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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ! y$ v$ N4 @( J2 ?+ s- i' O5 U
- [code]EDMA sample test application- d+ I# I+ E0 a7 x$ K/ I
- /*
" `/ ~/ [3 U2 J2 t; m - * edma_test.c" o" u: J+ p/ u8 t& F% P, C
- *# q8 ^5 _4 G) Z0 P
- * brief EDMA3 Test Application9 F$ A7 G; n6 H7 q. z* {* J7 V
- *% Z1 c! l1 e9 S. ~
- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
, i1 X2 t6 A+ ~, h4 l+ o - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT4 n$ e% J$ x( q
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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3 [- L, C% W* c$ q8 v5 i4 A - * This program is free software; you can redistribute it and/or9 K) J) k, w! u
- * modify it under the terms of the GNU General Public License as: [0 I7 ~) q! E' ~( J) c
- * published by the Free Software Foundation version 2., W9 [4 z. i/ `9 E
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any9 x2 k! S4 M: n- `; G3 T
- * kind, whether express or implied; without even the implied warranty
3 }* a7 D- T# }* I - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ K7 E8 J& S0 [
- * GNU General Public License for more details.- J& K7 }* Z' b+ s# y2 Z H! V: k
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- #include <linux/module.h>( T. @0 T7 \+ t. y* V
- #include <linux/init.h># q0 g7 h! m/ @. A
- #include <linux/errno.h> ~% \6 q3 _) ^ y( k
- #include <linux/types.h>* ~/ {: h1 |7 s- x ]: R
- #include <linux/interrupt.h>$ U, Y1 P- L. W& O( M
- #include <asm/io.h>" u1 A' Q" n$ N$ u& M+ Q
- #include <linux/moduleparam.h>( s. C' u r- H
- #include <linux/sysctl.h>
# O `$ k& X0 E- a# d$ _1 S+ q - #include <linux/mm.h>2 L8 m3 u0 S' l' b r4 k
- #include <linux/dma-mapping.h>
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: n# ^2 n2 z# S/ ?1 ~5 c- #include <mach/memory.h>, h0 w# F1 A' [" ~) j5 J% C4 d
- #include <mach/hardware.h>5 m- C" D; q; }7 k' V- c& \7 z
- #include <mach/irqs.h>
$ a: K9 U+ O0 G* t& j0 M - #include <asm/hardware/edma.h>/ y+ v* w( ?/ g
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- #undef EDMA3_DEBUG
: D9 ^; y5 P9 r9 b' o - /*#define EDMA3_DEBUG*/+ |" h5 Q' T% Q& m
7 L& K; {* f f, ]8 M- #ifdef EDMA3_DEBUG
1 s2 V( }+ a$ i; q$ A& J - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ t& W% J0 C( T; i" ?4 D! t
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)0 l1 o* P% R# `" Y4 z
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)* D2 j+ j: p. K
- #else. t# I& T/ j/ D
- #define DMA_PRINTK( x... )
* @ i8 a0 c4 \5 ]% T3 J3 ^ - #define DMA_FN_IN
; h% t8 j* z) m; U - #define DMA_FN_OUT
- u- O/ K+ U- A) ~! i$ }3 M# O! O" b1 E - #endif4 @: z6 ?* L" i9 z! g0 ?
- + R8 i+ G: o6 B* z9 }" K
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
+ n" a6 z6 n# p8 I - #define STATIC_SHIFT 3
/ V, f) J# | ~5 b% W, t( w: G$ a - #define TCINTEN_SHIFT 20
" T* `" p$ e# D1 R" j# M% u - #define ITCINTEN_SHIFT 21- t+ w) o4 j: E1 V0 D" q; u8 B
- #define TCCHEN_SHIFT 22
7 ?1 q9 o. g! S& C1 B - #define ITCCHEN_SHIFT 23- A+ t5 z% M5 B5 s8 K5 G
- - F+ n% M( s2 F4 |' s
- static volatile int irqraised1 = 0;+ b' g. I( F2 R" n( H
- static volatile int irqraised2 = 0;
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$ G9 e4 {' X1 ]5 O, x- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
" x" l5 G) l. r# { - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
9 _0 g# z( M9 _: s1 p - 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;' b( ]$ N; R1 C+ k v0 v
- dma_addr_t dmaphyssrc2 = 0;7 c0 U4 x* g) h3 r: t
- dma_addr_t dmaphysdest1 = 0;
6 s: J( k# \. y e+ W0 p: M - dma_addr_t dmaphysdest2 = 0;
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8 Y! v. _, U+ L8 ^' t+ V: d8 x- char *dmabufsrc1 = NULL;
3 l' H6 L- ~) S0 N# R8 M - char *dmabufsrc2 = NULL;: n6 \8 Y; h+ X/ ~) B8 \
- char *dmabufdest1 = NULL;: v+ @0 \' {- z( h0 |3 ? u
- char *dmabufdest2 = NULL;; N. N& Y' A) J& D$ q
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- static int acnt = 512;
" N# U1 @ p+ Z* f3 m1 V( m$ Y - static int bcnt = 8;% R9 p, `& `" S* M3 \/ i% t" C8 e
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
. v8 q% L9 {. I) @ - module_param(bcnt, int, S_IRUGO);
) f- ^; m5 ~% h( o+ `1 L - 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
9 D! ]$ \: m: A1 l1 H! q/ T4 ~( u6 ^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。
, o, B( x, A! }2 D# K* E6 L 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。# D+ E- M! Y% d: ^
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