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
# u7 H0 ]9 L- x# _) R
/*
+ V& S# g* L2 R: G
* edma_test.c
- s" [! R; u9 F1 d$ t
*
* ?3 J* v6 L$ f
* brief EDMA3 Test Application- j @5 M$ O5 c/ A
*
) s m p# G& d8 h
* This file contains EDMA3 Test code.; _- \7 Y; _! p1 h$ W
*0 @6 Q, P- r. v5 c$ y( R! w0 F
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
2 U: j, ~' _ `5 n! ?' u( \. @! K1 o
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
* p5 ?" R& q: B0 _- Y8 B
* TO CHANGE.
, b2 k& W# u0 |! ~# F
*
0 \8 j N( d6 C' |. v
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 _+ |. S( X3 G& ?# ?
*
# Z' L, `" }0 Y9 x9 z/ A+ k
* This program is free software; you can redistribute it and/or
2 @- o' T3 s) ~/ f- m
* modify it under the terms of the GNU General Public License as
" M$ s( S/ \5 W, H0 k, s
* published by the Free Software Foundation version 2.
- c2 s" \/ x' x( V- K! p
*& a! S: M' E' u% r' E
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
4 i3 x! p" `( z
* kind, whether express or implied; without even the implied warranty
: V, ^" m( Q p( {2 H0 ~: a! l
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* g& N3 S6 B; z2 T
* GNU General Public License for more details.1 Z/ ~3 t5 t z) Q0 m
*/
& c) Y- c. Y5 N' e- d N
! d2 _* |8 C4 p, P1 n3 c! }3 O
#include <linux/module.h>% _8 O& t9 t- P \5 ]
#include <linux/init.h>
w; U. l! a9 U L
#include <linux/errno.h>1 T) T& J: J5 m6 }3 e
#include <linux/types.h>" L: [- d; C7 K8 F! }9 P7 J0 q
#include <linux/interrupt.h>8 E O* v2 d) F7 R' _; p. `- a0 a
#include <asm/io.h>
6 |6 y: E7 ]6 _+ |' |/ I |* k" i4 F
#include <linux/moduleparam.h>5 Q0 s' Y$ @, C |- O" A3 l
#include <linux/sysctl.h>& }0 B( \5 U3 v9 y+ g
#include <linux/mm.h>
2 l+ l8 S0 _ D; T5 H
#include <linux/dma-mapping.h>
3 ~. x. U, t" x" t0 ~# d& X
; S$ [: @( Z6 X0 c2 [' v
#include <mach/memory.h>* @9 Z/ i+ }7 m- X/ R
#include <mach/hardware.h>1 z! S8 r3 n3 a4 K, b9 L2 O
#include <mach/irqs.h>) c6 f, ~- C) f" w
#include <asm/hardware/edma.h>/ T+ P4 a% s5 k: s3 s B
8 X* g9 X5 v3 S" m/ B6 F
#undef EDMA3_DEBUG; r! B S+ j) B* R2 m& X5 W5 M
/*#define EDMA3_DEBUG*/
$ h. M& I9 H5 R0 B
% [2 X: n# t7 [" g( q
#ifdef EDMA3_DEBUG6 J( m L; S! Y4 i: @7 ^( x4 p- [3 {
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
$ @) r% G& W2 H1 p) z, Z
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# g/ w% I4 g2 ^& C
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
( V# w6 x/ M7 H% A
#else( m1 o0 {# T/ a' i) y/ c) j9 O
#define DMA_PRINTK( x... )
( L6 T8 Y, H" l( q
#define DMA_FN_IN$ ~( K6 x& P' P- T! L
#define DMA_FN_OUT
0 G1 f5 Y/ ?/ _- c Q; R
#endif
( Q" {. N7 N' C8 i' o
( `9 o* v* S$ W" u* P4 c' W* C
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
1 J8 ~& |$ b6 V, {
#define STATIC_SHIFT 3! O9 ?: h" k/ e1 w6 B r0 q3 S
#define TCINTEN_SHIFT 20
0 k6 _- X$ d* ?! m
#define ITCINTEN_SHIFT 21$ }' f `# M N: v
#define TCCHEN_SHIFT 22 J% @8 C3 P. q7 z8 a8 [$ O2 V, v
#define ITCCHEN_SHIFT 23# {4 ?3 y7 J4 A0 K z+ T/ G
1 ?- i# @0 M7 h% v& A/ x
static volatile int irqraised1 = 0;
: }- C \1 T) D6 E
static volatile int irqraised2 = 0;
% f- s' p7 j6 |' @( v. ]; k5 d e9 ]
0 g, [+ _* h+ |2 X- E5 u8 l* Z4 T+ @: G
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
+ x F" v5 J/ F) b" A* s
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 \* A# t/ K! D. x
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; s9 p1 w7 D7 r0 _- K
; Q% D! Z# Z$ n1 l
dma_addr_t dmaphyssrc1 = 0;7 s e' i, P" h; y
dma_addr_t dmaphyssrc2 = 0;
& c9 p$ |# m- @9 {$ U; i( n# X
dma_addr_t dmaphysdest1 = 0; I3 v6 Y8 K8 l- ^. }' J- K& h
dma_addr_t dmaphysdest2 = 0;
2 ~4 t" a1 } U' u
! S p T3 n1 H
char *dmabufsrc1 = NULL;
7 S1 R( ]# D3 x- c8 }4 I
char *dmabufsrc2 = NULL;
% m$ ?0 Y8 r8 z1 n# r% o
char *dmabufdest1 = NULL;( N7 @5 l6 v$ E
char *dmabufdest2 = NULL;
; W, g2 R9 g3 i4 a3 \
5 t/ W* t6 B# O' k: A% y% ^4 C
static int acnt = 512;7 z8 M: i6 s2 D+ A! f% v
static int bcnt = 8;: U+ s% G) f4 J- n. p# G
static int ccnt = 8;4 ~, {& {$ K9 z4 {0 V6 x( W8 y
; f' C' H1 W/ Z5 R( l( b j% A0 E
module_param(acnt, int, S_IRUGO);8 G* W3 E+ N- ?5 D
module_param(bcnt, int, S_IRUGO);
3 p$ i$ Q5 _' ^- e) P$ J
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