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本帖最后由 yyj 于 2018-1-30 11:01 编辑 2 G. f8 \' v; B5 H
- [code]EDMA sample test application
6 B8 O% O5 J- q0 {; ~/ U - /*
* D3 F3 q7 \5 s. `" f s - * edma_test.c
# g! W! [# i2 F& H7 `) t - *1 t/ d! X2 A( S/ U
- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.6 T4 ^# @: `, o3 e) R0 I9 H3 @
- *
/ z- I ?2 _( j6 I$ w - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
! Q. `. G% H/ c) y1 E. j - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
* G. u( }0 e' b) |4 b - * TO CHANGE.
( N; \% R2 G8 M! V: @( ^, l2 B7 }: f - *
6 ?. t! l, z7 w' v* V' v# M; \ - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
" K" k* ~' n1 @9 I - *- s8 u$ J, W7 t( l: o; x' z
- * This program is free software; you can redistribute it and/or
9 ^1 j( A4 u" q, X - * modify it under the terms of the GNU General Public License as
+ [% r( B- }4 x' t - * published by the Free Software Foundation version 2.6 ^3 d5 F, ~0 G* Q
- *
" `% G( q5 h5 A: S. p - * This program is distributed "as is" WITHOUT ANY WARRANTY of any# I! L3 E' A' U1 o3 R- t Y
- * kind, whether express or implied; without even the implied warranty
$ C( m9 p. G$ U( Z: r4 G' D& i - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4 i" G0 m( o' Z; U+ |$ c - * GNU General Public License for more details.% [% q' z& ^6 {* m3 q: j+ S3 T: }. V
- */; x4 Y" B: @% L( R4 L& r0 d
! N, ?7 d: e+ d, \0 t3 |- #include <linux/module.h>
, a A- g n n2 \0 S/ I - #include <linux/init.h>& |# N4 z# |9 n8 g( X9 E5 {
- #include <linux/errno.h>
) {+ [# W P- A+ \# K - #include <linux/types.h>3 _3 [$ N# ?$ {
- #include <linux/interrupt.h># A/ F2 U0 n* B/ i8 U# W
- #include <asm/io.h>
7 k! [7 u6 Y4 u: G; W - #include <linux/moduleparam.h>
2 X j1 p+ ~! L6 S/ I* X$ Q - #include <linux/sysctl.h>
9 m+ q, I# z7 I0 [" O3 f - #include <linux/mm.h>- h* J0 c5 @( G% A! O# Z) p; \! |7 ~
- #include <linux/dma-mapping.h>5 _8 g1 r& j ^& s5 B6 r/ V! @
- " S( o1 x5 D0 q4 H) h$ B9 V
- #include <mach/memory.h>6 ]4 Y) e2 G1 P* u8 l' h
- #include <mach/hardware.h>
7 x+ W' z2 ]& }4 j4 S% W - #include <mach/irqs.h>: n* e, t* v4 j# I3 Z; W, Q
- #include <asm/hardware/edma.h>
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/ Y* J& f$ C7 ~- #undef EDMA3_DEBUG. N- j4 B4 j. k' |- e
- /*#define EDMA3_DEBUG*/
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& n* j% {; _2 c% L9 l: C) ?. b) ?+ i& Z- #ifdef EDMA3_DEBUG `) m% ~) Z* I$ Y3 m9 [
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
# [2 |4 Z( I0 g! g: w3 l" u. O - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)0 r; J6 G+ Y) c8 v' J" F
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
% ? a1 D) N( W9 g8 O - #else
) P$ @- f# ?7 Q% C, N$ F - #define DMA_PRINTK( x... )! }$ ]; x6 X0 A$ e8 \" O) j
- #define DMA_FN_IN" R8 C B/ ]7 ~- e
- #define DMA_FN_OUT
8 F! O" J( e: [( b2 [& b - #endif2 X4 ]: b6 z2 { j3 @
& N6 G! ] R6 n! O- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
7 l: o3 J$ W5 n3 B) P - #define STATIC_SHIFT 3- X. p$ i/ B% B1 P- d
- #define TCINTEN_SHIFT 207 z0 c2 Y& q8 z& S. }5 b) O
- #define ITCINTEN_SHIFT 21( x) @) k. l6 [7 L9 \
- #define TCCHEN_SHIFT 228 T2 A7 b# A0 r) A
- #define ITCCHEN_SHIFT 23, m( O# W. x' W: F- ?8 T
- 5 m/ y; ?8 j! D8 g' Z8 Y
- static volatile int irqraised1 = 0;- z& R3 H2 A B! a; \1 r% W
- static volatile int irqraised2 = 0;4 {, Z0 I. X. g: U. B; t. z
! h1 c# U" x6 |7 Z0 Q8 X7 Z \+ n% t- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! u" G7 q6 A3 N4 J) B
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. v% w8 y! L* {2 p5 f
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
; k& \7 I2 M/ S ]6 K0 o2 W, e - $ [$ Y4 D7 [4 K
- dma_addr_t dmaphyssrc1 = 0;
% ^' v& _" y" F5 A8 T0 B+ J, f" D - dma_addr_t dmaphyssrc2 = 0;4 F- _. a5 d% S# p3 k
- dma_addr_t dmaphysdest1 = 0;
* h" A2 [3 Q# C& a7 [( g - dma_addr_t dmaphysdest2 = 0;
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* Y0 J% K! s( t, A' K- char *dmabufsrc1 = NULL;
& {0 M8 r7 T; g" ^9 b( _' x9 F8 A - char *dmabufsrc2 = NULL;+ Z+ W* A, {( u' m! D
- char *dmabufdest1 = NULL;4 }2 k1 i. T& n2 k; p5 e) w
- char *dmabufdest2 = NULL;, x4 N# [6 n3 D1 A/ Z, C$ ~
- 3 p3 v" a4 [3 D: c
- static int acnt = 512;+ ?/ K; i9 x9 h2 U
- static int bcnt = 8;
& M" {9 F4 K$ B/ O- R, h/ i/ f6 w - static int ccnt = 8;3 ?( \" a* W2 ^9 S! |* l) L
- " q; q( E5 i. R0 }4 s
- module_param(acnt, int, S_IRUGO);, o; ^3 c+ r$ s( ?9 z
- module_param(bcnt, int, S_IRUGO);
- z F* u# ^9 B5 Y% @ - module_param(ccnt, int, S_IRUGO);
复制代码 ) a3 q5 y# I7 [# e3 h$ m
% f. U; w2 A4 X4 G 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/ }9 |. T' d. P1 S$ y7 M
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。 K! p& e9 K& T1 ?7 ?9 z
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。% [* `) w9 c( f+ o1 f
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