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本帖最后由 yyj 于 2018-1-30 11:01 编辑
. m y4 D: L$ M. d2 M- [code]EDMA sample test application+ O! R( I- e2 c9 S3 Z. S2 M. N' G
- /*
$ ?8 T5 U' y, P/ F* S" w. q - * edma_test.c
, ^! g* H: a1 _' ?8 ?. h& b$ }+ o - *
5 _( @0 {5 G5 { q. B - * brief EDMA3 Test Application
! x3 x7 m# W- B ^% r- r( U - *
' W# L3 w% t. t7 ?& P& p - * This file contains EDMA3 Test code.
/ R2 v& v- p- m' D4 z# k8 w) ~ - *
" C P/ \' L; M, T! L - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
( _* A- n" z8 q - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" r' O/ O! a; V
- * TO CHANGE.
) c9 D# B% Y. n6 T" L - *
" b2 E7 i) \% U: Q - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or7 g( C; Y( S5 P# i" S- P1 Z! C
- * modify it under the terms of the GNU General Public License as
( E- P3 C1 x1 |1 u% s - * published by the Free Software Foundation version 2./ S/ U) k' A8 `' Y. @4 w6 i5 F
- *3 x, E% Y5 ~7 T
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any1 r+ j+ S% t% v2 W; a
- * kind, whether express or implied; without even the implied warranty
' b% h3 }8 W, x2 A - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& V- H0 \8 S) c: b! F5 Y2 O& L
- * GNU General Public License for more details., a8 e- U; e% U- B0 S
- */% J |6 R6 y. w3 b, E- d
6 I* S- p/ T6 Q7 L9 }- #include <linux/module.h>8 n9 t1 c4 y0 a6 S
- #include <linux/init.h>9 A# w$ u- i0 H0 x
- #include <linux/errno.h>% J0 P* v6 q9 l
- #include <linux/types.h>
" g1 N5 x0 x' d9 y+ b) x - #include <linux/interrupt.h>
! S, }6 U: J5 ~" K - #include <asm/io.h>7 ^) J/ L$ p$ e/ U6 ]1 ^2 r# N
- #include <linux/moduleparam.h>' w7 s7 R9 D2 Q# S
- #include <linux/sysctl.h>
W% d5 U7 g" I8 H' n - #include <linux/mm.h>
" {; u. m: j" ]( A/ q. G& W - #include <linux/dma-mapping.h>& k7 x' p% i& @4 W9 n
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- #include <mach/memory.h>3 j' Z: s x2 ^* K# J# ?5 G
- #include <mach/hardware.h>
- Q% N0 |/ @) S- b0 Z3 j - #include <mach/irqs.h>
; S1 x1 L h ~ - #include <asm/hardware/edma.h>: b4 Y% z; g. R9 ?5 W/ Q
0 [# \9 d& Q$ E! A, `- #undef EDMA3_DEBUG
" D1 b5 `2 Y0 s! ?- \* D - /*#define EDMA3_DEBUG*/8 y+ K: D0 P S& e) ~
7 T1 R+ |! z; Y( i7 H+ o- #ifdef EDMA3_DEBUG
8 a9 e, j3 ^3 T% ~2 i$ r" P - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 j* l* Z3 f5 F3 s
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)$ p+ T- `/ }; l6 U3 n
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
. B$ U8 j* _: R% U% r - #else W Y Y4 A) p) i. `6 _
- #define DMA_PRINTK( x... )
- ?# H+ h1 \6 I* C - #define DMA_FN_IN
0 x) @9 x/ p3 ]- K - #define DMA_FN_OUT
( f+ ?1 S" v' v. s* q/ j5 ]1 @ - #endif
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5 W1 C0 B8 S O* w1 X. j- #define MAX_DMA_TRANSFER_IN_BYTES (32768)" r! l& b, G8 _% s
- #define STATIC_SHIFT 3& j# K: [ Z8 W& `
- #define TCINTEN_SHIFT 20
5 Q+ [6 [+ C- c- G - #define ITCINTEN_SHIFT 212 [: z+ c: G# |" \1 j
- #define TCCHEN_SHIFT 22! O' J4 U3 N/ `! _2 o1 ~# G8 y
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;5 W0 ?' t3 X' j: K' F b1 k
- 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);' F9 u- }' v4 _1 c, ^4 A
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 L% Q( j/ D2 L. S* W
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 g3 W4 o# N( J3 {8 i- G: m7 c
7 e3 c: X( e4 J* x$ o- dma_addr_t dmaphyssrc1 = 0;/ T1 {2 M1 w8 _7 n) J
- dma_addr_t dmaphyssrc2 = 0;
) Q- _. z; U, m8 V# o7 O - dma_addr_t dmaphysdest1 = 0;
; o% `. r8 r" B" f - dma_addr_t dmaphysdest2 = 0;
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: K, o! D; \0 X0 g7 P( g- char *dmabufsrc1 = NULL;: S) Y/ Z6 A/ o) H
- char *dmabufsrc2 = NULL;$ A+ v4 v9 n* F" j" m9 s( @! V
- char *dmabufdest1 = NULL;
" k i+ e- F% _ b+ ~* s- @ - char *dmabufdest2 = NULL;
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- static int acnt = 512;" {/ z5 t* N8 Q; Q, l& w
- static int bcnt = 8;$ y! ]4 F4 t( m; Q
- static int ccnt = 8;. f1 W I2 G6 W( y0 U
* D' l3 z( m* T2 R, J1 [% ^1 n) Q- module_param(acnt, int, S_IRUGO);
# ` U* J- _/ K. V7 a - module_param(bcnt, int, S_IRUGO);
; _% Y0 | ^. J) ?. ~ W% K/ r - 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
' G i( y g2 K7 q) O' |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。
& [* I( U+ v9 |0 r7 R" s8 w, y% t3 n2 s$ } 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。5 g2 Z. V6 i3 v# Q7 E
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