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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ! ~# i# w, L3 M" t' E$ O+ l
- [code]EDMA sample test application
9 i' e$ z% v! ] U9 L - /* J0 m0 D' a9 `
- * edma_test.c
$ ^+ M/ R. o! e D8 ?2 W, @0 y S | - *
8 C1 M) Y7 l4 p. X - * brief EDMA3 Test Application2 I; T3 H8 @) d
- *" b0 g- {4 F s' b5 n( P! K
- * This file contains EDMA3 Test code./ N% p3 o. E2 r
- *
% R/ r0 t; p$ \ J; { - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE N9 l1 `5 U' `1 k B" x
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ h& m' p$ j/ F4 T+ U
- * TO CHANGE.
% F" L6 j: j( x2 K - *
. y+ u+ v8 M& n, @ - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* F3 m# ?8 Y- g( O
- *8 }+ x( H) Z0 v9 T9 S
- * This program is free software; you can redistribute it and/or" k4 t. e1 N' T. y
- * modify it under the terms of the GNU General Public License as" K/ s6 q+ ^$ \2 X8 K
- * published by the Free Software Foundation version 2.
5 r# g. N3 e9 r- i; M - *
. t8 h* Q/ X3 V3 S& X+ \/ O3 E( U - * This program is distributed "as is" WITHOUT ANY WARRANTY of any$ R4 `% q5 P- p5 x
- * kind, whether express or implied; without even the implied warranty* N& A1 Q. v) r5 x6 }& J
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% X6 _7 M; V0 `! d. ~, U - * GNU General Public License for more details.& ^3 }& t8 ]) L' ~. E) m7 X
- */: y# D' |' d, B+ S, V) k
- 0 S# `; {; y3 P6 L. [8 f
- #include <linux/module.h>
- m( j( u& V( m( x0 r+ N7 F0 A - #include <linux/init.h># \% w/ z- d, a4 C6 A- u
- #include <linux/errno.h>6 C! B/ ^6 S* B( q( q: h' o2 w7 I9 h" Q
- #include <linux/types.h>
: @7 r! v! I' J- a4 r: }6 Z - #include <linux/interrupt.h>
5 h# m: h S0 f; S& d, }2 C) o - #include <asm/io.h>
$ M+ J- C0 ~9 O! b+ u: Y - #include <linux/moduleparam.h>2 z$ Y' n& U* U: w8 I! m
- #include <linux/sysctl.h>
: `8 [5 p9 s5 j' f) U V% ` - #include <linux/mm.h>
1 [" T& D. p: B6 [' S+ | - #include <linux/dma-mapping.h>. D ]7 Y' A; `8 s8 F% Q
. ~' F# `6 L5 s, Q% D- #include <mach/memory.h>- Q& x3 B# R) n; n @% q
- #include <mach/hardware.h>
. O! _, A& C+ E - #include <mach/irqs.h>
1 N- S* Y" Z4 T; Y$ c4 w! u- c9 n; m' Z - #include <asm/hardware/edma.h>6 y0 w# }' V- W/ b+ K/ E% |
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- #undef EDMA3_DEBUG- k6 ~$ K, M: ^: d# h& G% q) k9 P) t
- /*#define EDMA3_DEBUG*/
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3 X1 X: ]- a. R, [$ D- #ifdef EDMA3_DEBUG- q' B$ i# P$ Y" h$ D5 e* e; D1 e
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% a2 M" z% z/ s: S% m: ^# J
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
% }# s' {4 t- Y - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)1 U4 R, t/ w" |) b+ u% b: P8 R9 s" D& y
- #else% i" M6 h7 F @ B9 q; ]2 s
- #define DMA_PRINTK( x... )' B( d5 V; z @6 O1 g
- #define DMA_FN_IN
/ k& a8 N- w- z/ y8 `* p# g - #define DMA_FN_OUT- \( M8 t& `/ N B1 Y
- #endif$ z" }3 H X: Z/ ], Y1 C5 i
- 7 \+ a g- a. g/ x8 e# g
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)9 h2 v4 f1 j( X* M5 G
- #define STATIC_SHIFT 3
9 {- d3 }; q R3 }: A8 a - #define TCINTEN_SHIFT 20
6 F: U. b" n/ m, ~0 I - #define ITCINTEN_SHIFT 21
3 b7 s1 k) W. T X# \& `4 I6 Q - #define TCCHEN_SHIFT 226 y% w0 d; |" `0 L& b( p7 Y' F
- #define ITCCHEN_SHIFT 236 b: l7 {: k; z6 H G% M
- 2 S, e" M9 T+ Z8 Y! S5 u0 |
- static volatile int irqraised1 = 0;
: {. v9 M$ x) E4 x8 @/ D - 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);# |" U0 x7 W+ x+ V* _; r- S
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
/ Y/ P3 G7 Z- i/ v1 F - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 l. v7 ` g1 d0 m: m+ \
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- dma_addr_t dmaphyssrc1 = 0;+ M5 \. G8 n- V8 T# u
- dma_addr_t dmaphyssrc2 = 0;6 N6 Z/ a( u& g& R' k: m* w5 g
- dma_addr_t dmaphysdest1 = 0;( Z8 v9 H; ~2 B* V5 F8 t" \; C1 P
- dma_addr_t dmaphysdest2 = 0;
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- G* N( X5 `" |7 X/ y8 V- char *dmabufsrc1 = NULL;
7 O' C8 J( S0 S" J2 @ - char *dmabufsrc2 = NULL;6 n3 _) f+ ~' `7 M
- char *dmabufdest1 = NULL;( ]; J, A4 W9 G
- char *dmabufdest2 = NULL;
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- static int acnt = 512;5 w% x0 {) b5 e7 }
- static int bcnt = 8;
! B, Z& H/ K& ]3 r1 O l - static int ccnt = 8;5 s2 H/ g* y b
- * [: W5 V3 g. P: {' T
- module_param(acnt, int, S_IRUGO);
8 B+ n/ `$ {7 E* x" p - module_param(bcnt, int, S_IRUGO);: j8 l2 ]3 d, x9 \( g
- 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) C8 ?" d6 n D% P( |- e3 K
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。
, _5 Z* d4 \+ {1 J- q" e4 _ 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。/ }. z) A5 \* ~+ z- c( A% H9 z- U
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