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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ( }# d, a6 G8 e
- [code]EDMA sample test application
6 J3 C/ S6 Z5 p' w7 ?9 _ - /*
' l6 p) N! E6 {5 { - * edma_test.c
2 e% Q8 x7 Y" @% p# ^ - *
. B4 u% X3 F! L* h) g: T6 f% I, } - * brief EDMA3 Test Application g7 d# r$ j/ n" L' n; D/ r
- *
+ y, l* n- A" x" N, J - * This file contains EDMA3 Test code.
( z8 d; V; u% k6 v; ^ - *
" |2 H& Q- Y! F4 I" }- T5 @! H7 E* o - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
, J) q" D5 n9 [$ U% ? - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
% f$ W# F0 ~ Q. {( x6 J* Z - * TO CHANGE.
( u3 V) v# j6 |, c - *
5 t' s# o- k+ v( E - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
3 R9 N S7 t" E T - *6 p3 G4 T( {! k5 u* [
- * This program is free software; you can redistribute it and/or5 h3 h, L* B9 Q3 ~6 O
- * modify it under the terms of the GNU General Public License as7 m6 I+ `1 j& _7 E- `* z9 G
- * published by the Free Software Foundation version 2.
' ~$ r P' Q- a. _: H - *
- z# ]7 |+ o1 W: B( I8 e) } - * This program is distributed "as is" WITHOUT ANY WARRANTY of any! s! Z/ u) i+ ~6 E
- * kind, whether express or implied; without even the implied warranty
8 T2 n3 o) G2 K" m& ?" J - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5 a: w) W0 l& a/ o - * GNU General Public License for more details.
* I8 }$ ^+ e9 T& w0 q% b: J - */2 s! S# n8 _4 d
& \. y- x: E. a5 [8 H. f- #include <linux/module.h>* b; J. Q4 E% e0 @2 a1 M
- #include <linux/init.h>, F' z. l0 b/ j) O/ k7 D5 G; j
- #include <linux/errno.h>
( S/ \7 v. j+ L! f. H( S - #include <linux/types.h>
/ o# Q/ @# d+ j) g - #include <linux/interrupt.h>
8 ?7 _+ w X9 R! E1 Y4 s - #include <asm/io.h>
- q, e# H+ F, P& P' J) d - #include <linux/moduleparam.h>' e7 N" Q3 t- b K0 H
- #include <linux/sysctl.h>
1 O) Y" i @1 ^8 l) t - #include <linux/mm.h>
5 L* h2 F5 W6 K4 ?, m2 Q - #include <linux/dma-mapping.h>8 }# J; ?, k- i/ F$ }. c# b( v1 B4 G
0 ^2 }. Z) r3 O: x, c8 w- #include <mach/memory.h>8 F. }3 H5 ~. t4 M
- #include <mach/hardware.h>
% |0 v& h8 M. _ - #include <mach/irqs.h>; d, k9 A& M' y/ S
- #include <asm/hardware/edma.h>4 E. r7 ^$ c! k4 s$ ]6 A
- 5 Y) `; H G1 g( Y( F3 L' D) H
- #undef EDMA3_DEBUG
y5 ]5 J' c7 c) C$ s - /*#define EDMA3_DEBUG*/
% M; o4 q. ?+ I, w, z) E: o. z - O( C8 S. j0 ]
- #ifdef EDMA3_DEBUG
+ |$ b& _) d, L2 Q - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)' U2 L; y7 q' w: ~7 u
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
c) E, \; ~! n, [: B! | - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
9 G/ X0 {4 f7 I# d9 { - #else
) }" F2 B' Q. ? - #define DMA_PRINTK( x... )
. r0 k' A. B/ M - #define DMA_FN_IN
; l D8 v& J* T- D' Q4 a - #define DMA_FN_OUT& C! n5 z3 e9 E3 z3 c
- #endif# @ Y; R7 [# ]; @" q
- . A {$ D5 Q+ u1 U d& y
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
3 q1 Y0 v0 a$ I+ p! V( ^4 H; [8 D: u - #define STATIC_SHIFT 3
3 n" u7 S$ G" B0 K - #define TCINTEN_SHIFT 20
1 {9 Y m; k- ~: E* i5 G& Y - #define ITCINTEN_SHIFT 21
9 C1 ]) r# l3 j1 d8 U - #define TCCHEN_SHIFT 22
2 d, p G/ `% |7 s0 l, Y - #define ITCCHEN_SHIFT 23
$ Z3 W' x; v( i: k, f6 d - ! A+ A; U( O1 v3 U/ r$ R
- static volatile int irqraised1 = 0;
- u5 {$ x! ~$ M* n7 v- T5 N - static volatile int irqraised2 = 0;5 V; p! s2 E9 V# @/ [6 q
! ^3 l. N/ i. r8 v8 X- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
7 f* \5 i# P, a! Y* V2 k) M - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) L) F! K" q5 r - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ W v* _+ h, j8 o
- 8 m5 J; I2 [- |& X" {$ D! [& u9 D0 L: |
- dma_addr_t dmaphyssrc1 = 0;
' M2 F( \9 R& E. g) | - dma_addr_t dmaphyssrc2 = 0;
2 _- d" T; T( `( }/ ~5 |+ G& Y; k - dma_addr_t dmaphysdest1 = 0;
" {. U' g% a; d2 I4 E - dma_addr_t dmaphysdest2 = 0;$ u& A/ k/ {( I& r$ U0 ~1 }
+ m" K- d. G' A/ Z* \9 h- char *dmabufsrc1 = NULL;
" w! m9 j' X% T% i3 g n0 z$ g, S - char *dmabufsrc2 = NULL;
3 |' @; x9 k" q0 n: q) ` - char *dmabufdest1 = NULL;
2 h* }! c% f3 A" J. Y X7 P - char *dmabufdest2 = NULL;
! I$ ?2 {6 ~+ J2 [. X+ \2 R - & l: n) Z0 v9 Q+ b5 [1 |6 o8 e! Q i
- static int acnt = 512;( _: ~# I% ?* V% Y2 t j8 O
- static int bcnt = 8;
# A* Z* L) w2 S) Y1 r2 ^2 j - static int ccnt = 8;) E7 N- B2 W4 k- Q+ R; [3 T# x
- 1 R* A2 r+ J7 }
- module_param(acnt, int, S_IRUGO);
^* L) f$ u4 Y2 G1 ~ - module_param(bcnt, int, S_IRUGO);
% z( [3 e1 G$ u0 s) F/ X - module_param(ccnt, int, S_IRUGO);
复制代码
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0 @8 s# ]- l, 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
- d$ ~3 u3 p! F; x- @" \9 Garm-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。
. x6 @* s5 T1 r' T 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。; |* ^8 y- t& e* Y
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