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本帖最后由 yyj 于 2018-1-30 11:01 编辑
) L3 a7 O; a) Z9 H5 e- [code]EDMA sample test application% j, f0 i) m* m5 z2 H
- /*/ j4 I: Q8 H8 ]- B, i
- * edma_test.c3 b+ O6 _/ P. ~* e- v: k
- *' h7 {; F9 V- V, [
- * brief EDMA3 Test Application% }2 `+ L4 m. \) x) A- \
- *( W5 q3 V$ E, i6 D! \
- * This file contains EDMA3 Test code.
+ @+ w- u# I/ n y2 q3 q - *
) _, b5 S, a& c+ Z8 E - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 K* J: F3 E/ a8 @1 v/ P6 g
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
) k: U. R6 w; O% S6 E& p - * TO CHANGE.
8 \$ V% G' x9 r. t/ i$ L( R! p. t2 u - *
* S5 f" |+ m) Z6 `/ n" X - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% ?) Y7 D. H- @3 g" ~; W0 A- H
- *" T8 q8 T. l5 M3 E0 ` Y
- * This program is free software; you can redistribute it and/or
- x6 ~: Y0 ?, }* e0 B8 O - * modify it under the terms of the GNU General Public License as& `( u& T$ T# g: Q3 m
- * published by the Free Software Foundation version 2.
/ f: O! a* @5 o* i9 f' z - *
2 W% K/ s1 n& B8 c) r - * This program is distributed "as is" WITHOUT ANY WARRANTY of any8 z0 b2 Q$ N. F3 Q- B% r6 }" y. v
- * kind, whether express or implied; without even the implied warranty
' Q% \3 q- n* o' N - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* ?# d3 M: S& n/ Y' F1 B
- * GNU General Public License for more details.
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" m6 q* C; C4 e$ k1 c8 N/ N- #include <linux/module.h>' b- w6 Z' m( _
- #include <linux/init.h>
+ S5 V4 u, E& M2 p3 z o - #include <linux/errno.h>( _' h) ~, D2 f4 t# Y* E8 \
- #include <linux/types.h>
5 E; V% n, r0 ]2 t, A; Y- @- _ - #include <linux/interrupt.h>
+ L7 o3 s0 |; Y8 p - #include <asm/io.h>5 D: H% t8 E8 J/ J
- #include <linux/moduleparam.h>9 W/ O* j- ~# k& G/ O: r2 l
- #include <linux/sysctl.h>' C$ }, O) O' l" F8 p- |
- #include <linux/mm.h>9 Y, i5 R! X" o% m& D) h
- #include <linux/dma-mapping.h>) n" P6 C5 @, Z5 J3 ]6 z _
- * e- s" x6 `4 {
- #include <mach/memory.h>9 p x& Y: V+ Y& q5 z1 V) d! v+ }& o' H
- #include <mach/hardware.h>6 Y. \7 U3 k1 [9 p! y
- #include <mach/irqs.h>
) `7 s* t9 k9 G. I* r - #include <asm/hardware/edma.h> }# r8 F# I% [
- 0 h, U* p7 ~& O5 l
- #undef EDMA3_DEBUG
( S3 L6 Q, ?' D$ J - /*#define EDMA3_DEBUG*/" M7 V& M' Y0 H* U$ w% U
- ^. r+ t6 O# ?/ a- #ifdef EDMA3_DEBUG9 `! T+ {* c( J& r( a, J M& U
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
e3 l, Q$ S+ M( q5 k+ O: L7 o - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
5 K! z% F4 \9 q3 M - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
/ @7 e" \5 l+ e4 @) L - #else
# B( |1 o) x0 ^" @ - #define DMA_PRINTK( x... )
. J7 k; j# f0 X. J U - #define DMA_FN_IN
( j: ^) Z- F, o/ T) ^6 B - #define DMA_FN_OUT
/ D" h/ Q( n% ]9 F7 n8 V! m Q - #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)( u: J8 X9 T8 v" E- m1 [
- #define STATIC_SHIFT 3
- w( m( h3 F9 {5 n - #define TCINTEN_SHIFT 20
& s; Q3 [8 o- C4 {5 Y3 J - #define ITCINTEN_SHIFT 21
. [. q: a6 D# x( j0 B - #define TCCHEN_SHIFT 22
0 b) S2 a4 F6 d4 Q - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
/ q3 t i8 P. {% Y& ~8 f - static volatile int irqraised2 = 0;" k- W/ @" B: @, i& d! Z
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 \! Q3 p* J: H p& U, G3 \2 X8 N B# J
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 L0 m$ _5 A( t& \- \
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ }8 V, I7 ]9 u% \- E: K- v+ l
- 4 f6 V. z" a& L# T, O+ u
- dma_addr_t dmaphyssrc1 = 0;
4 V3 P9 j$ v' W7 B" D - dma_addr_t dmaphyssrc2 = 0;( v0 z" W* r; g) s! |- R0 p' j
- dma_addr_t dmaphysdest1 = 0;
& O+ H+ Y0 ?! m# @7 a6 A( ^9 F, ` - dma_addr_t dmaphysdest2 = 0;
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7 t: p1 Y% N" K: M# n- char *dmabufsrc1 = NULL;
1 u: q5 K, Q' {8 l* B - char *dmabufsrc2 = NULL;
- q8 g# V7 F h7 A9 V/ w - char *dmabufdest1 = NULL;- J5 i! I3 Z1 J3 [
- char *dmabufdest2 = NULL;
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- static int acnt = 512;
0 }* p' g9 D) b/ j; p+ h9 ? - static int bcnt = 8;
1 ?; ]$ r) |4 P+ e3 [ - static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
5 `8 N8 a% w" C) ?- i - module_param(bcnt, int, S_IRUGO);
W8 E1 m2 ^; J/ a; `5 a; O - module_param(ccnt, int, S_IRUGO);
复制代码 # Y3 V9 S- a8 S
% m7 E) O* n: i8 X: } U0 v" W+ Z 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
2 _/ S R! C8 N. u+ S" B. {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。
4 Y# V: n s& j 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。: A5 o, ~3 e! E+ P ~
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