OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
/ U' R( @+ ~/ _& k g$ z3 }3 C2 V
/*
4 w) b& B# i" n; E" Y' m% N- s" R
* edma_test.c
+ e% h* {: U! _; w
*
0 Y* w+ K x% ?3 s6 W* }( [( N
* brief EDMA3 Test Application
5 x9 I9 F, ~0 [ Z& _
*
7 V( m( c$ u/ ]; q8 o
* This file contains EDMA3 Test code.
# s, d6 h2 D& g `% o% S
*) `) S1 F x9 Z( T" @& Z
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ i0 Y, f* s7 v3 w- ?4 a% M: G
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
# l% V! M% I( G
* TO CHANGE.1 F8 D, d, |8 P& v2 f: o
*
$ E$ v/ b' j( e- f
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* l; ~3 v7 j: q5 A6 W' Z& n
*
, s3 O. n% |) m6 z4 {& ? }
* This program is free software; you can redistribute it and/or$ s5 Y6 q: E( V, y- Q
* modify it under the terms of the GNU General Public License as3 G ~4 a& q! a1 R- h2 K
* published by the Free Software Foundation version 2.
: v$ V. y! l7 y, N
*: `- G8 y0 V$ D" |9 |: |
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
4 M+ f/ V! a5 R" i' p+ T) R
* kind, whether express or implied; without even the implied warranty* _) F2 \3 o& [( ^' B
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% N0 l# U% ^) r. B7 {
* GNU General Public License for more details.' k! S7 S5 {7 `$ {! G9 M) U' ?
*/
" |( j* Y& w! J8 A1 r$ ~# j4 w
A" N" m- T: Y g; s! Q) q
#include <linux/module.h># v g6 `3 n7 p8 K* z' S; q
#include <linux/init.h>7 p* a) L/ i3 a4 I# V. Y$ V3 E( l
#include <linux/errno.h>
9 E5 x8 t6 l5 \: T% @
#include <linux/types.h>1 @: W% i: I1 ?2 e' q0 ?1 d
#include <linux/interrupt.h>
0 A" B& g4 C8 t- @0 k
#include <asm/io.h>% N7 B1 I: @) Z# _
#include <linux/moduleparam.h># d3 ^8 W" N0 C- o) s1 o
#include <linux/sysctl.h>
, `) d; |" s' ]
#include <linux/mm.h> N+ X( D" ]6 [ m
#include <linux/dma-mapping.h>0 O, R2 e. m c) `1 R4 l
- ] w8 U5 H7 M% a. S- }+ G" g/ f
#include <mach/memory.h>
( \$ R. s$ J% ]
#include <mach/hardware.h>
2 W4 U& g N9 I- N
#include <mach/irqs.h>
: {4 q, Q6 j, P
#include <asm/hardware/edma.h>
2 X) T* J8 A# ?# c# T' J" ~( ?2 w
. y; }7 v+ A' `: E# W' E. b+ p- t
#undef EDMA3_DEBUG% T; R ~) I, C9 S- j
/*#define EDMA3_DEBUG*/
# a9 z* j: X' m# {0 J: b
4 C, C, x6 `1 x8 F0 E8 p; ?
#ifdef EDMA3_DEBUG
, X8 y. H8 K0 Y: ]+ L% Q
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! C) U0 t. e, c) c8 Q, t1 J
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): [! Q$ ~# ^) t, f' J' l
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
: Z5 Q- F- p! R1 O, @( Z. L) e
#else
1 f( _6 d3 g& v4 D' R( K
#define DMA_PRINTK( x... )% Y5 J/ Z4 d1 q# e4 S4 k$ x
#define DMA_FN_IN u. x: j1 Y; B4 ~! L( t
#define DMA_FN_OUT* v" @: f0 X! c) C6 W; V
#endif) h! E0 C$ I" f, @5 q
' r/ G3 y' y5 x/ \, D6 `
#define MAX_DMA_TRANSFER_IN_BYTES (32768)( i3 T7 A- m4 D1 m$ _
#define STATIC_SHIFT 3
, L* x2 K% E6 ~, {/ b/ q) b; E% }% c
#define TCINTEN_SHIFT 20. Q0 v5 N$ f7 T/ t8 \' E
#define ITCINTEN_SHIFT 21
9 ?) T. T! G4 i# k
#define TCCHEN_SHIFT 22
' F- z2 D K* ~5 Z! B
#define ITCCHEN_SHIFT 238 e9 ^2 Q- [1 z$ A7 U
% c+ A0 C% M7 i0 g5 H% d
static volatile int irqraised1 = 0;
7 C& x1 S J3 \$ T
static volatile int irqraised2 = 0;2 _# y3 A; a+ ~* q5 x1 w8 A
5 \) H) G* q1 k6 w! g; T. ?- L
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& A, u5 Y1 ?- ~1 r' E5 h
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 E# W9 X( h1 A2 U+ F* Y0 M
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 g- ?4 L4 E# t. U
% P0 | R% z+ V) X/ P* j
dma_addr_t dmaphyssrc1 = 0;) Y" k4 d' u( L, H" k, Z* ?
dma_addr_t dmaphyssrc2 = 0; ]& G; ]7 h' B: Z4 b& G, F# E
dma_addr_t dmaphysdest1 = 0;8 f& I/ p. x9 k- S1 J! m n
dma_addr_t dmaphysdest2 = 0;
# f7 X- T" q4 y; t9 }9 m
0 u$ w$ r5 z% q K4 ~$ h6 \
char *dmabufsrc1 = NULL;5 `; d4 ^. m) A6 ]$ A( b
char *dmabufsrc2 = NULL;6 x$ a0 O% B% r4 N$ a" A5 F- P3 I
char *dmabufdest1 = NULL;
: W" @6 W, q/ `/ l
char *dmabufdest2 = NULL;
1 C/ x6 M9 N3 X+ E, N
# ^& P7 W7 c J/ E9 e
static int acnt = 512;
* B T) C9 C1 p' U U- v ^
static int bcnt = 8;
' B5 n; s' h, l, o! k. f! B
static int ccnt = 8;' _5 V4 X" w; N& S( o
' \! \0 H% y: g, C* e. G
module_param(acnt, int, S_IRUGO);
+ Q4 O& u; o1 s7 s( o U8 M) y
module_param(bcnt, int, S_IRUGO);
7 _- x& k6 G! l; Y8 [( p
module_param(ccnt, int, S_IRUGO);

复制代码

   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
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。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

		自动登录	找回密码
密码			立即注册

[未解决] OMAPL138如何在Linux下使用EDMA3驱动