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本帖最后由 yyj 于 2018-1-30 11:01 编辑 & {, l- x/ c. g' g
- [code]EDMA sample test application$ s. s+ ~3 Q; t- |8 E
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- * edma_test.c
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+ @% u# n4 }; D* o* c* g - * brief EDMA3 Test Application* Y' s: g. A4 k; e9 A
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- * This file contains EDMA3 Test code.
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! k$ @% {& Z( r( E# k! a1 f9 F - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
5 R- j4 G: {/ r9 P. L# H - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
/ _ L/ X) b7 I0 a+ ^ - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 ], r7 P# ?; w# E
- *( R- l1 \& ? G$ w* p% `3 p) k8 g" a
- * This program is free software; you can redistribute it and/or, z P0 ^0 _9 c
- * modify it under the terms of the GNU General Public License as
5 o% f* `# a) b - * published by the Free Software Foundation version 2.
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$ a9 i' U2 k" B$ z. x( m - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
# a$ p3 u$ E1 m# Y - * kind, whether express or implied; without even the implied warranty% _$ }' ]: n+ L
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
: U' ~% i7 H8 |6 i. r - * GNU General Public License for more details.2 G4 R7 B9 |; x
- */' d, s8 O, o+ B2 a
& R& U' X& u- y- c- r1 F/ \( K- #include <linux/module.h>2 M) N" J/ k5 |: I5 j3 T& @/ k
- #include <linux/init.h>
. z* R" d; k/ ~& J0 R - #include <linux/errno.h>
, u- d A. S, K" ~# a% Q4 k - #include <linux/types.h>5 S# P4 W+ M/ I8 |
- #include <linux/interrupt.h>
/ p4 G v* `, y6 p - #include <asm/io.h>
& I- f, o/ G- e( a - #include <linux/moduleparam.h>1 V X& k1 e* d
- #include <linux/sysctl.h>
1 Q+ Q# ? \4 W* a - #include <linux/mm.h>
3 {; s5 S3 U9 ~4 E - #include <linux/dma-mapping.h>' H- {8 I s# F r" m" C
0 L* K- R' r/ v5 K' n- #include <mach/memory.h>! n5 D/ ~: C: Q3 Q
- #include <mach/hardware.h>/ s+ \' ]: f, ]
- #include <mach/irqs.h>; c m8 ~2 I3 G* w! @/ T. C
- #include <asm/hardware/edma.h>3 _; L6 f- E+ m) j1 |/ Y* c
% K! I9 \$ N9 @; j' s( Q) i5 g- #undef EDMA3_DEBUG3 `/ C0 Z5 ~9 g! T
- /*#define EDMA3_DEBUG*/% w E3 k1 @3 R. v/ q
6 T! U b. X8 \& [/ P' E- #ifdef EDMA3_DEBUG8 t- W2 u% Q5 r+ P& e$ p B
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* M$ X# O3 ?; m) _* k" R/ c* E" u7 q' u
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)! T% e3 r$ {. |
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
3 B k6 [ I9 y/ N6 ^3 `" n - #else
/ X* {5 ~7 F( X - #define DMA_PRINTK( x... )
2 L; j, d5 |6 u1 A' x - #define DMA_FN_IN
3 l: W& [. K, T( d3 U% d - #define DMA_FN_OUT9 f I- u% s0 B
- #endif# _* X9 _' n8 d! F3 q, r' n: ^
- N6 c& O- F2 Z- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
4 T$ ^ W, f& B' H - #define STATIC_SHIFT 3
1 n5 |8 B1 P6 P* B$ U" e - #define TCINTEN_SHIFT 20
2 X" k% [- x8 M% F9 `4 M - #define ITCINTEN_SHIFT 212 ]/ b" r5 Z7 @5 ^
- #define TCCHEN_SHIFT 22* m/ H3 ^1 H' p5 N, j
- #define ITCCHEN_SHIFT 23
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" \( u$ {$ n5 x6 X( Y- static volatile int irqraised1 = 0;5 E# H1 U" C' I6 w" |: w" j3 M
- static volatile int irqraised2 = 0;/ e% }% j3 u% r" k, A$ e
4 u# P/ x- `+ Y- l( ?8 v& A6 q/ D- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
T% ^1 N. \" X - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) p7 |! i+ H& w/ D. u! W8 J* w$ S - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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/ [# @5 V1 o! A. _7 Q# J- dma_addr_t dmaphyssrc1 = 0;
' \% z7 u4 M( g, C. d! c* a - dma_addr_t dmaphyssrc2 = 0; E! B$ u& T _2 F1 ^5 k/ d9 z, X
- dma_addr_t dmaphysdest1 = 0;
$ \1 L4 u- U3 W# }( F - dma_addr_t dmaphysdest2 = 0;8 O0 e% e% r; K1 B
+ o3 p1 y( S. Y* X4 ?& L- char *dmabufsrc1 = NULL;2 s" T& L) z' v
- char *dmabufsrc2 = NULL;, y" W9 B0 y. s1 a1 z% c3 Y
- char *dmabufdest1 = NULL;
( ^9 k7 o* Q4 n' f6 i: R$ ^ - char *dmabufdest2 = NULL;
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" B( y; T4 A* [6 Y- static int acnt = 512;! W: i) f5 y E8 U) D2 S
- static int bcnt = 8;/ P* P4 ~5 X; y9 s9 ^) h Q1 r
- static int ccnt = 8;) q5 {7 {6 _5 H, B* x0 g8 `
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- module_param(acnt, int, S_IRUGO);5 l7 s9 M2 E* v; Y/ d4 m6 o
- module_param(bcnt, int, S_IRUGO);
: {9 f5 c0 R5 E. Q9 f* f - module_param(ccnt, int, S_IRUGO);
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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
! Y) |6 J( F( `2 _* r( P- iarm-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。# l1 |, ]! o6 N; `5 |
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。& u; K9 b0 [( z* J( T
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