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本帖最后由 yyj 于 2018-1-30 11:01 编辑
/ q, k) R9 D4 k) _# I8 f" O- [code]EDMA sample test application
}0 s: N( J5 D$ D - /*
+ x" b w" x' e' \" `% Q - * edma_test.c! C, i8 j5 r# g. T; J7 Y4 s/ n
- *
) @. c6 i3 a% F, D5 S - * brief EDMA3 Test Application+ H C8 B# c7 c5 ~' l9 T
- *8 P+ o0 M: N/ J( h+ x6 W/ e
- * This file contains EDMA3 Test code.
* G8 s& ^7 _& k8 g - *+ n7 M+ Z, b4 j# G6 e( J
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE7 j* ]! ~$ L) X) ?7 y
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT6 Y! a5 R5 E* ^7 \
- * TO CHANGE.$ X) e- Z+ p! [6 B
- *
1 o) [( k- U( ?7 d( G* `0 W0 E0 c - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! U9 A+ p2 N& q" P
- *
2 L4 N1 }; k% B; n - * This program is free software; you can redistribute it and/or
) }1 F0 C1 ]$ u! H/ t( b. K) @ - * modify it under the terms of the GNU General Public License as6 A6 |8 C1 {- t6 T7 h7 h7 s4 c
- * published by the Free Software Foundation version 2.5 C/ z5 k! G) _* A( R
- *
% ? J' X- P/ r$ u - * This program is distributed "as is" WITHOUT ANY WARRANTY of any) T& ]/ Y% i! n4 j" J. I
- * kind, whether express or implied; without even the implied warranty7 A0 B, A( D9 M$ R2 N. `
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) n! g/ V+ ~ W- q4 y0 M1 i
- * GNU General Public License for more details.
/ @! ^" I: U, z& C. V8 B - */# X- A3 w' C; n
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- #include <linux/module.h>6 N! a6 u+ ^ ]/ l
- #include <linux/init.h>8 w. R) X* B. ]2 m' Z9 N- O
- #include <linux/errno.h>
$ N- m4 N' v8 H0 p( F& a( N% V - #include <linux/types.h>
$ a* }: V% ~8 k( s* m - #include <linux/interrupt.h>0 x& I9 v. y" ^' g
- #include <asm/io.h>8 z2 E* A9 V* e" O9 m5 M7 {
- #include <linux/moduleparam.h>* g, V% x c& Q" u- ]' S9 T
- #include <linux/sysctl.h>
7 X& g9 d0 T" B' J$ K, A* Z - #include <linux/mm.h>- K; m7 p! j! w# W2 K' |6 B1 [
- #include <linux/dma-mapping.h>/ w4 r; C% ?9 z
0 P, _! o, \$ u( o0 _ p7 K- #include <mach/memory.h>/ y' g7 F! Z8 c+ l* t4 E B
- #include <mach/hardware.h>9 n2 X8 h B4 u8 R \0 C
- #include <mach/irqs.h>% y+ ~4 D7 r) _3 y! v- ~& S( [
- #include <asm/hardware/edma.h>; x0 E6 P- Y( C8 p
- 9 z* x) ?& X1 Z. X
- #undef EDMA3_DEBUG
- u! g8 @/ ~; t1 E2 m4 x) e6 h - /*#define EDMA3_DEBUG*/
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8 ]4 |$ ~% N0 {; ~1 O- #ifdef EDMA3_DEBUG
$ J" p7 c, |5 `% L5 u - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 D: ^; O0 i/ f6 X! A/ P7 K
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# a& _- v0 W4 N; D. [! A8 M2 }
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
! t* A, I8 J! l) F/ `: y9 u# B# e - #else8 m+ u9 O) g$ C+ A# H' H
- #define DMA_PRINTK( x... )- W/ T# {' R$ \8 m: o
- #define DMA_FN_IN- E4 }9 {7 V+ n/ F# K/ m
- #define DMA_FN_OUT
" b1 w! m; z2 G1 n - #endif" ?. D, m7 Z7 y: o6 {2 }% i3 o
" A) T' Q! V( q. L" f1 x4 {- #define MAX_DMA_TRANSFER_IN_BYTES (32768)% k+ U0 I! u: A! l
- #define STATIC_SHIFT 35 {. N# C) q; L
- #define TCINTEN_SHIFT 20
9 w: Q5 {2 C: { - #define ITCINTEN_SHIFT 212 P& V+ o D9 b% g/ g4 B" S: f
- #define TCCHEN_SHIFT 22+ J: K; w* \. F, E* u
- #define ITCCHEN_SHIFT 23% l; \: @1 }6 |, _, C+ I
- 7 U k1 k3 e4 W6 g
- static volatile int irqraised1 = 0;
5 R2 q/ a. u, h+ A - static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# a3 a# p% \* B
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
5 g( T- S9 X: q0 H8 }; e - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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, Y0 q3 s- a3 `9 H( Z b- dma_addr_t dmaphyssrc1 = 0;7 j! o0 v, u* B/ X6 w9 F
- dma_addr_t dmaphyssrc2 = 0;
6 R& J( ?/ j& X! m$ n( w" L* J - dma_addr_t dmaphysdest1 = 0;7 F1 |& T( R+ J/ x5 k
- dma_addr_t dmaphysdest2 = 0;& \% ]& t: p; W' ^; V7 j
) v! s4 Y, ]- H; y/ E- char *dmabufsrc1 = NULL;
3 \5 E# ~" ]8 j" O - char *dmabufsrc2 = NULL;4 g" R7 w8 t1 Z4 V V; Q; o
- char *dmabufdest1 = NULL;6 |( L0 d7 ^/ e( O- B
- char *dmabufdest2 = NULL;
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- static int acnt = 512;. Q& k+ h: U- X; }
- static int bcnt = 8;
6 D" _: M* D/ b \! [) K - static int ccnt = 8;
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, ?" Y0 |" Q0 Y6 W- module_param(acnt, int, S_IRUGO);
# C7 k& \: X- h) x1 h0 v - module_param(bcnt, int, S_IRUGO);
! Z# ]# T& }7 [6 T$ U0 i1 } - module_param(ccnt, int, S_IRUGO);
复制代码 $ ?2 B0 q" E2 b! [1 O' |4 `
6 L% o* {6 ^3 b5 s; k 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+ p1 _% P. l0 l* y
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。1 W9 J9 _) P3 m! `
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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