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
; J/ \: a! g, v5 c' t8 S1 g
/*
( w2 s1 ^: c L/ ^
* edma_test.c, D/ v! b$ E2 a/ L
*- L. _$ p! C0 C s4 o
* brief EDMA3 Test Application4 C2 R& U8 x7 r
*
, s+ C8 \! ~# s
* This file contains EDMA3 Test code.
$ s& X7 Y. D, g8 W
*
) T9 m1 X/ f0 b, \' ?
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
0 C! ]( ^( o" f, E2 ^$ l
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
4 Q( c5 j7 e/ p& [
* TO CHANGE.& F2 M, S: N( \
** s9 a7 Z6 n; _
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) Q7 o0 A1 i2 N4 z
*8 O1 S' j+ K/ }4 Y+ @7 ]: J
* This program is free software; you can redistribute it and/or. e3 \# L8 f. G0 l0 s; N
* modify it under the terms of the GNU General Public License as
4 A: ` o5 t9 E7 H
* published by the Free Software Foundation version 2.5 v' a7 A+ m4 D3 }
*
8 D! i* J7 }" [! Y
* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ L2 I& ~+ p6 P: r- w8 I
* kind, whether express or implied; without even the implied warranty
- D, u* n! E4 p3 Z6 f
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
' O( V( h6 W& U5 }6 h
* GNU General Public License for more details.0 k5 n/ G/ m$ X y* t/ ]. {# b+ m
*/
3 X. R+ F% \# F& K- y4 B1 `
$ n) n, _6 g6 G
#include <linux/module.h>; N- R1 m! k$ [6 Y$ ^* Z) I0 @
#include <linux/init.h>& h1 F' j& Z2 i4 ?4 B- ~. P7 ~
#include <linux/errno.h>6 E$ l/ F# d3 R
#include <linux/types.h>
8 W/ H) l: L% {8 @) @, m* F: V
#include <linux/interrupt.h>
# ?8 Z8 O! _7 ?
#include <asm/io.h>9 T; h! q; |: ^! S' k) t u
#include <linux/moduleparam.h>
8 s- q, s: ~" @5 j2 e8 O9 T
#include <linux/sysctl.h>" Q: N, Q* p' y; l
#include <linux/mm.h>. B4 G+ W& @% k1 t1 h ?0 [6 X- S4 P l
#include <linux/dma-mapping.h>$ @" \( k$ O7 h
, C) ~) ~3 e/ h' U7 @. I
#include <mach/memory.h>
( l; r6 K# Z8 s
#include <mach/hardware.h>
: O' P8 [& a5 _6 d6 a9 j
#include <mach/irqs.h>
9 W. o3 X1 L" Q% A
#include <asm/hardware/edma.h>
% E1 I2 ^' v. ?( ^- T& G
1 h) \/ f6 A4 s, i- h5 s
#undef EDMA3_DEBUG
4 o- \* ^; C* W3 w( Y! b
/*#define EDMA3_DEBUG*/6 S3 F+ f. q; j. }* {
! b5 ]% i7 e) s3 R+ U, |
#ifdef EDMA3_DEBUG" n2 x* B. Q' K5 ^+ s, K/ G/ I
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)7 @, C$ P6 ^& J( P5 d. [
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
( D5 Y/ l* e2 j
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
1 r L7 t4 g& F4 [* q+ a7 j% b
#else6 n; k) m; i1 s) p0 B" y& \
#define DMA_PRINTK( x... )5 m7 @& s+ R) r5 B4 _
#define DMA_FN_IN
% ~% c5 W( k% \4 O/ x2 q0 w+ k! L
#define DMA_FN_OUT
W, K' H4 w% Q0 a2 X! B
#endif) Y0 w# c: x3 c+ C! q0 K
3 L; g, C6 W$ x; ^! s% Q3 T
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
2 Y$ F% t* ]! Y4 N
#define STATIC_SHIFT 3
2 Y7 i1 u( ]7 h
#define TCINTEN_SHIFT 20
2 M3 ?1 J( \. K1 Z8 M, \' i) k9 v, T
#define ITCINTEN_SHIFT 21* q( t7 R1 Y9 F0 M- w* f3 K
#define TCCHEN_SHIFT 22
) B1 B! g f, u
#define ITCCHEN_SHIFT 23
Y, {# M/ T: Z, J1 i
# ^/ c# w! M# C7 |
static volatile int irqraised1 = 0;
; f# Y3 B2 K8 L6 o3 Z
static volatile int irqraised2 = 0;
! i8 A+ |! t" `" a: |8 K6 m, o
* Q% u8 `$ l: O6 u
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. {/ G6 j, v! C0 X
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# H' u0 a' f+ N& u. v& p
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' G& a" d+ E% O4 X; ], _1 G
[& M$ R T0 s& {
dma_addr_t dmaphyssrc1 = 0;1 e7 W% c6 a5 R1 `9 p+ w
dma_addr_t dmaphyssrc2 = 0;! c9 M1 j1 S9 E6 A, ]3 ~
dma_addr_t dmaphysdest1 = 0;; ~) |) v7 \$ x* o( Q
dma_addr_t dmaphysdest2 = 0;. h" S0 q" I# r8 F
% G6 H3 d$ v# c. y4 R }0 V
char *dmabufsrc1 = NULL;; H2 B. i7 r' F( q: x* I
char *dmabufsrc2 = NULL;
2 p" n! N+ |- o; z6 d9 I
char *dmabufdest1 = NULL;/ i& ~3 r1 w2 }) @) C7 b9 b, Y
char *dmabufdest2 = NULL;; u$ R4 K6 D4 V7 O2 H
b1 i% F' C F& |1 Q5 `
static int acnt = 512;
$ B) _& V! y. r3 r
static int bcnt = 8;) c: M0 z4 p/ g) O8 i7 m0 V* q3 p
static int ccnt = 8;
3 f! e8 k# h* J+ o
' e( {) o/ ?& Q* ?+ L& z
module_param(acnt, int, S_IRUGO);
. T6 ^# }" N9 K& T- Z! |
module_param(bcnt, int, S_IRUGO);
0 A7 S7 r# Y4 l, f1 }! L
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