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 application0 k0 e2 \3 j9 J4 C- M
/*
" f2 _. E0 a& v3 V& f
* edma_test.c6 W+ F" e! A7 r
*5 ~% C1 O9 `; Z2 _3 L* t) O
* brief EDMA3 Test Application; I8 W2 ^: E( i1 P6 [$ v
*
/ z2 A/ E8 j; x" [
* This file contains EDMA3 Test code.* o$ q: C8 `3 ^' [
*
V5 R: t, d. P s( ^- }8 |
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE2 v9 `% ~- ~: Q6 b
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! z I% N3 \( ^) T! d) O. \
* TO CHANGE.9 s$ m( y3 S3 k2 e
*
% v. z+ V: S4 v K* ~/ \
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
# H! C [! x# Q2 j0 B5 U
*
0 R& E! {8 p2 Q7 D% ~0 x% [
* This program is free software; you can redistribute it and/or
) L2 u) t6 n: [( a" s
* modify it under the terms of the GNU General Public License as4 ^( F$ {3 J+ @! y0 R) y# e9 v
* published by the Free Software Foundation version 2.
* K8 m6 n; Z7 @: V
*( V( Y3 J4 M! w* W4 [7 |3 z- k& X* f
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
" a% L; i% Q6 j
* kind, whether express or implied; without even the implied warranty
^/ {% i1 u+ j2 J# ~$ j5 Z# k9 r
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
" v! |5 i& ^5 [' W& ^
* GNU General Public License for more details.' j0 U( N# F! a2 E4 @ D
*/. |) H+ U; p `0 n6 q: V! o2 j
- G( V$ a) I1 o2 H8 }& q
#include <linux/module.h>
+ C8 k/ E$ y5 g
#include <linux/init.h>
' O( u) n$ I- o" [$ T
#include <linux/errno.h>
5 S) ^9 Z9 B4 u. a' b) F
#include <linux/types.h>% h& b1 q& v- Z. `6 w7 n
#include <linux/interrupt.h>
# J) q$ K9 N- [% r0 F- k3 \
#include <asm/io.h>
% d6 `" O+ g$ u" y) _8 r
#include <linux/moduleparam.h>3 l# G# J: p+ \7 p8 |/ ~) \4 O: P
#include <linux/sysctl.h>* l3 {8 |1 P; C a9 u
#include <linux/mm.h>
" @2 j7 Q, T9 w4 C+ B
#include <linux/dma-mapping.h>2 U% I+ r S9 H; ^9 j( i
2 }) ]5 F5 B2 z! T8 Q
#include <mach/memory.h>% p2 H+ q9 T: R8 p
#include <mach/hardware.h>
4 R: Q: }9 W% H/ n
#include <mach/irqs.h>
) a! t, A7 h/ Y' B: l8 s; z
#include <asm/hardware/edma.h>, s' ]1 [3 y) s4 Z+ e+ H
0 ` |- f: y; M ^ H7 U
#undef EDMA3_DEBUG
$ V& P1 H+ F9 c$ a
/*#define EDMA3_DEBUG*/) P2 ~8 a6 D; G, D$ ?* H! D' Z
) }2 a$ v1 L$ r- @
#ifdef EDMA3_DEBUG/ v. b- E2 ]) R4 c+ i) ^
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ P$ _* b& b. d! @, u% ~+ t- w
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 t$ _" Q8 Y0 e
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). w1 [- J6 P1 e. c3 U3 s, \
#else" d0 Z- x/ Z4 m% r* I, [, e
#define DMA_PRINTK( x... )8 D4 F9 ~& V# q6 Q3 O( J
#define DMA_FN_IN
; Z% i" z) T5 G, T3 u ~- q
#define DMA_FN_OUT2 t( F g! A- [6 ~! D
#endif
" L) E1 H7 r3 b& N( ]; S
; k+ a7 O& D4 D% a, \; Z
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
& u7 s2 A8 W6 e
#define STATIC_SHIFT 3
& j: H7 |! ~% }4 I, [, E1 O4 Y
#define TCINTEN_SHIFT 20
4 q0 _7 }( B/ J/ X# |) V
#define ITCINTEN_SHIFT 21( S) ~8 s% f% M k" q+ f6 ?# d
#define TCCHEN_SHIFT 22
9 k, F) E& e% W2 J
#define ITCCHEN_SHIFT 23
9 W' W" n9 } @; [" I3 l
$ I- Y \) |, }& I
static volatile int irqraised1 = 0;; o% g7 {/ s) M$ }
static volatile int irqraised2 = 0;) v9 b/ `. d" o& ^1 a; V7 D0 X
: U- p; u% K4 l: S6 z% [' N/ Q
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 a# L7 Y; G- k/ u' S5 W
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' T6 C) W \! A
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) r5 K/ O- V0 I0 _- E- O# x
8 {' L1 |& S& `7 |
dma_addr_t dmaphyssrc1 = 0;
; x5 R/ M% Z+ N9 B1 ?# d( R; Y
dma_addr_t dmaphyssrc2 = 0;
3 M9 {: J$ Q- M7 f( o' V. p
dma_addr_t dmaphysdest1 = 0;7 g! {8 Y! u5 @5 m
dma_addr_t dmaphysdest2 = 0;, N! B' Y/ t- A% Z% k4 ^! t- e
- V3 C& {) X; x1 ]# t
char *dmabufsrc1 = NULL;
9 o. h0 M" { M& x7 k" H$ K
char *dmabufsrc2 = NULL;( W3 ]" x* q. M
char *dmabufdest1 = NULL;% h8 [; E7 U6 }! M
char *dmabufdest2 = NULL;- H% K& _. `* j$ J- ^4 O
* x, `6 S' Q* \- ]
static int acnt = 512;; W, W8 x5 h h
static int bcnt = 8;* i% J8 \4 z# d& H# l1 l$ i) m, Q
static int ccnt = 8;' F6 k2 B1 m& L* U; N' A! J. M
. N8 R* g% T! s3 C7 L
module_param(acnt, int, S_IRUGO);
# v! b1 h, m% ]
module_param(bcnt, int, S_IRUGO);
7 p3 `1 D8 \. @* m$ ~$ A$ C% [& `1 k
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