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本帖最后由 yyj 于 2018-1-30 11:01 编辑 5 N; R8 U" b4 S4 y; G* g# Z1 x
- [code]EDMA sample test application
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- * edma_test.c( J% ]7 I F" {* X. b
- *. A. y+ d+ }+ ~& c( }9 b {
- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, x' W: Z$ \: A1 x
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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- *
( ?; v2 f N9 d+ E& {2 ?3 h ~ - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ M* R0 _) J" Z: c* o
- */ \5 M7 ?# l0 J4 ^* d' L; P
- * This program is free software; you can redistribute it and/or
. y3 n& x. ~6 p0 m: X5 \" `+ ^( | - * modify it under the terms of the GNU General Public License as
7 m2 N% \4 H' p1 J - * published by the Free Software Foundation version 2.4 ? U% H% o! S7 s8 L6 g
- *
$ ^! g* v# }* h: S - * This program is distributed "as is" WITHOUT ANY WARRANTY of any1 j2 s' F, |" e! c7 o
- * kind, whether express or implied; without even the implied warranty
( `0 W: d x8 N. M$ J6 _ - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
" D7 A1 L/ d, C% w - * GNU General Public License for more details.
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4 j' o* i5 |6 p7 X. g- #include <linux/module.h>6 M! t, N9 @2 [
- #include <linux/init.h>
3 d, K; }1 [5 c0 E* m/ W - #include <linux/errno.h>
( x! x: K/ G4 q - #include <linux/types.h># G+ @1 U7 ]$ i; @ K
- #include <linux/interrupt.h>
9 X3 m, u$ l) m8 s7 T$ o8 D6 C: u - #include <asm/io.h>
! s% I8 w& @& \. O; T - #include <linux/moduleparam.h>3 y$ j0 U& {# [5 i- D K7 L
- #include <linux/sysctl.h>$ U5 B4 D( q* g: I
- #include <linux/mm.h>5 J- i7 C1 D& ^6 X- X5 T
- #include <linux/dma-mapping.h>
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" B# J, P# w* e! d" i- #include <mach/memory.h>
5 z- P5 Q. K9 u2 r1 I - #include <mach/hardware.h>
3 w! f9 @ n* y: c8 X - #include <mach/irqs.h>
) S0 T' r. R6 t: x) \' E - #include <asm/hardware/edma.h>
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3 B ^( u0 `7 \% x7 T- #undef EDMA3_DEBUG
- j: J( ^% A0 S& _ F - /*#define EDMA3_DEBUG*/
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' N, T9 q% K( d8 b( \3 G- #ifdef EDMA3_DEBUG. j, j: [7 w: U( X
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ m! y6 K4 s! q, J. N- V
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)( P2 W/ I9 X3 Y( T( V5 e" U
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
; M* e: e# l$ m9 S9 O - #else
, z. N& y7 z6 e, |4 n( u; L! S' A - #define DMA_PRINTK( x... )
& T' l. s5 I/ \. ` - #define DMA_FN_IN. z" [+ Y3 e3 ~+ x" }0 n
- #define DMA_FN_OUT; R5 \/ R) l" D7 f7 P/ J: O4 |
- #endif" Q: U! Y1 t8 {4 h9 l* b& ^3 G0 A
- 3 {- g: F6 @- b) R$ [; ^6 ~5 d
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)7 t9 e* c3 D. [5 j$ F1 \
- #define STATIC_SHIFT 37 U. R! z; }5 T, p( ]2 F/ K" X% ?
- #define TCINTEN_SHIFT 20
2 B) Z+ w, f. m% G1 K7 g: W P1 w - #define ITCINTEN_SHIFT 212 f' e1 _: P: [+ J- _: X
- #define TCCHEN_SHIFT 22
3 b" y0 J9 x1 K( A# b - #define ITCCHEN_SHIFT 23! M1 ~. h* X$ }/ s# x: A+ t
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- static volatile int irqraised1 = 0;
1 {1 R0 w. `3 f7 |$ z - static volatile int irqraised2 = 0;- i5 C% p: a; G2 a
7 q; I3 U/ K2 C' T- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' v* k; g6 v' p- G
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: ?9 N% A5 K. K; F; h
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% n+ z8 r% r4 a
5 |+ J5 S f! j3 m# m- dma_addr_t dmaphyssrc1 = 0;
1 f# ]3 @8 T6 d - dma_addr_t dmaphyssrc2 = 0;
; z+ C3 u7 q! ^' l; k5 I* t - dma_addr_t dmaphysdest1 = 0;3 l& a5 E# Z. q/ K$ G; ?$ S; A
- dma_addr_t dmaphysdest2 = 0;' k: f+ n: \* r) I; [
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- char *dmabufsrc1 = NULL;
& X( L! {( N* L% q( _- s - char *dmabufsrc2 = NULL;6 O( g# g3 \7 y, n
- char *dmabufdest1 = NULL;
7 G4 ^" D6 ?" R/ K% I# n - char *dmabufdest2 = NULL;4 L' e3 b& D1 A; f; h* I/ y. A1 `
- ' m/ n; ]$ p1 q8 B! y h
- static int acnt = 512;
, F1 l7 A7 \+ p - static int bcnt = 8;
+ A* W7 G! ^4 C- F$ N2 u/ J - static int ccnt = 8;: [6 L" k$ [1 ~
$ C5 _, w3 B+ H2 Z9 l- module_param(acnt, int, S_IRUGO);
. O& U% Q4 Y3 f. R E, L3 B - module_param(bcnt, int, S_IRUGO);
$ A+ ^; H& x: @ - 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: I' j( I0 l5 f
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。( Q; f! {- m- o, ?0 J! o" s- E
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。. e7 ? n6 }4 M% `
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