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本帖最后由 yyj 于 2018-1-30 11:01 编辑 " u; `, e4 i4 o6 P: X$ X" M9 a
- [code]EDMA sample test application
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- * edma_test.c
9 r7 D- N- Z; Y' Y) L - *
) B+ A8 [( w W5 h - * brief EDMA3 Test Application
7 L$ r$ u" | ?5 N! M - *
2 t/ q' j, V. Z+ n# Y: \$ \+ f - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
6 J' p0 o, Q7 N1 _, Z3 z5 M - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
5 F9 B0 ?3 T5 m - * TO CHANGE.4 T" `# H; |. g9 `9 s
- *
' [8 e7 a6 D4 i1 O+ m. u - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
1 @7 Z! F& s& H9 J - *
" _4 y9 ?) X$ O - * This program is free software; you can redistribute it and/or1 s) n! i( y! p; P
- * modify it under the terms of the GNU General Public License as* G6 m& V9 G- D# k* c2 y- d
- * published by the Free Software Foundation version 2.( a% g4 B) B. l3 I" l# [
- *
4 y8 }: J0 K6 Z3 Z2 | - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
6 l* E* X+ A7 O8 I. K8 C1 E - * kind, whether express or implied; without even the implied warranty
+ u! z6 E: M" r! X9 Q - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
( f! q6 B2 Y' X) o7 d - * GNU General Public License for more details.
5 w) G6 P, ~3 A6 B5 d4 ~) T: i - */
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7 d6 S* Q" t* x: F7 z2 ]( |- #include <linux/module.h>
, d+ B; W) X4 s* ] - #include <linux/init.h>9 U, `" k6 k( B3 Z+ m+ b9 Z6 C
- #include <linux/errno.h># H& T3 {- }0 i
- #include <linux/types.h>3 c4 ^) K1 U5 r& L$ f, J
- #include <linux/interrupt.h>3 g' |. `& a1 C r1 @
- #include <asm/io.h>" U& o% Q( ?3 m( I5 Y
- #include <linux/moduleparam.h>
8 t% j( H5 {7 v! r f - #include <linux/sysctl.h>! d. |1 T) g+ H2 E: H# b8 H
- #include <linux/mm.h>
5 n: `+ Z* s2 O5 x; k - #include <linux/dma-mapping.h> M$ B2 W8 \' [2 o3 P7 t
! h5 N7 H+ a! A! y$ o6 g- #include <mach/memory.h>/ ~* g8 @9 z8 q0 _ m5 p8 T' T
- #include <mach/hardware.h>; D+ `* L6 j7 a8 w9 {3 o
- #include <mach/irqs.h>
5 A1 r; \$ }% l - #include <asm/hardware/edma.h>' I+ n. Z3 D3 [# ?% l
- ; t( y7 Q+ Y4 d7 ?9 W7 o8 a/ ]
- #undef EDMA3_DEBUG, b, q. V* M- L7 X8 L# t
- /*#define EDMA3_DEBUG*/& h8 b* J$ u' r. ^$ q- M% O* ^
- 0 m* Z( I4 W# K1 h
- #ifdef EDMA3_DEBUG+ w D; R' z- U, C% j
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* ?1 D) z2 ~5 m8 h1 x4 }3 Y# r
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)( x' j6 W& E8 r( X/ R- m4 b1 Y
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
8 T* J( P! n) e3 M, L - #else; I) c6 a/ W2 _; B
- #define DMA_PRINTK( x... )# H8 N s9 M6 |3 L l
- #define DMA_FN_IN& I `& m! z# l/ ^
- #define DMA_FN_OUT: y, J2 r! J5 [, u
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)8 ]5 |/ j: K0 ?: w6 A
- #define STATIC_SHIFT 3
V9 n: H% F! b+ c - #define TCINTEN_SHIFT 20
) J7 h* z% C( `, O* Q3 B2 ^ - #define ITCINTEN_SHIFT 21
" s$ f" A1 W" {! V7 j( S - #define TCCHEN_SHIFT 22
: w) {: ~+ x5 F7 u - #define ITCCHEN_SHIFT 23
! [- I" R/ E" Z. a+ U4 z9 Q. I
- x* L& M( a. a7 T0 C; q. Y- static volatile int irqraised1 = 0;
9 z$ L- {3 O" Q% ?3 g: z - static volatile int irqraised2 = 0;3 z1 e+ L6 s9 G- p# J( T
- $ Y; a" Z% }, s- c5 a
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
; X6 ^2 X3 `& p6 k& Z/ F - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
0 ?' c) u0 b2 m A - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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! V+ a3 q* H$ m' o+ N- dma_addr_t dmaphyssrc1 = 0;; R- v" A) ]) x. n( T
- dma_addr_t dmaphyssrc2 = 0;; F; Z* l: I4 u+ h/ a
- dma_addr_t dmaphysdest1 = 0;
" x3 ?5 x! d/ |1 K1 C - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;: a3 n% R$ z% N9 p5 H4 f. _" W
- char *dmabufsrc2 = NULL;( L# {; }4 J$ |# U, _* m
- char *dmabufdest1 = NULL;
w2 J& V# Z5 D# W! G - char *dmabufdest2 = NULL;0 k) w$ ~- b- P1 n- u
- ' O" ^5 T7 n8 F; t8 m2 y# f
- static int acnt = 512;7 z- y8 M7 `0 w* Z6 O# F7 g; q, o
- static int bcnt = 8;0 b r0 M/ E% ?7 [' u8 L5 d" }
- static int ccnt = 8;) ? S& P' ^0 }9 p$ ]! _
- 8 \+ t7 y- [5 `% @' B! s
- module_param(acnt, int, S_IRUGO);& s3 i" _6 h1 [: q6 X
- module_param(bcnt, int, S_IRUGO);2 D9 ] y% n. k
- module_param(ccnt, int, S_IRUGO);
复制代码 8 M5 O. Y2 T: [7 ^0 Z# z9 w
; ~: b6 P3 O2 e7 t 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
^7 {6 U# d1 ]9 F4 O2 earm-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。. d+ q9 X) B9 _5 n, l7 F# K( I8 N: h1 }
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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