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
" s. H8 L) A; v Y4 y
/*
" ]8 K9 U- T7 {1 f
* edma_test.c
7 k) `# ]+ ?! Y1 N& [2 B
*+ u8 D9 Z. O( N2 l/ n2 K
* brief EDMA3 Test Application7 s: a P! y3 T3 T
*4 u U, @& t" C9 R& B! h/ R5 Q8 g$ h
* This file contains EDMA3 Test code., F; U& W" c2 S& f8 ?& H0 N
*
! E0 y( ^! `9 Q
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
2 b7 j7 o- _$ |" c e% ?$ X
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 ]- P U: @/ w7 ]" |
* TO CHANGE.& j8 \2 H" w$ @; }4 U8 T
*
5 F1 x* }4 D9 N# S
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
6 X X4 h( t9 D
*7 k& }9 t2 B: {/ g$ r6 F. X6 t
* This program is free software; you can redistribute it and/or$ T0 E$ v q8 v) ]6 d+ x+ A/ ^1 i
* modify it under the terms of the GNU General Public License as1 K. G- b2 U- B- d/ S
* published by the Free Software Foundation version 2.) J+ c, X* Q# u9 E4 q% G
*% o3 }3 P( F& _
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
# Y9 |, U1 K7 s0 T Z% P' V
* kind, whether express or implied; without even the implied warranty
/ O: d+ A9 [9 P" Z9 b0 C( Y
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
) U0 C8 U( W2 { g* `# _
* GNU General Public License for more details.
$ b+ O/ ]2 K5 X8 j# b: y4 U! Y) k
*/
\ I! ], ]8 C( v
6 i- ]9 l, x y- K& B
#include <linux/module.h>
+ o7 Y. x) W! W# m" p% k
#include <linux/init.h>' d/ n6 C5 `0 u9 L' {8 ~
#include <linux/errno.h>1 Y5 M( Z. T4 j2 i& Q
#include <linux/types.h>4 b4 D( x$ J. Z0 w- S+ Y
#include <linux/interrupt.h>
1 h) y. U v* `9 B+ C7 {; h
#include <asm/io.h>. u0 |) G7 Z" k
#include <linux/moduleparam.h>
* u+ x) y" r, ]: q# P
#include <linux/sysctl.h>
. [+ H# ]! E+ `! W
#include <linux/mm.h>
, ^) C: i! u _! X( r9 E
#include <linux/dma-mapping.h>+ M1 l9 D1 X' V2 W* N l7 {% ]
2 _- B* ?1 M) Y, y! {+ B- a; ?2 H
#include <mach/memory.h>( J* t A) n+ f f% f
#include <mach/hardware.h>
* h4 a( j' b; w: v: Z; p
#include <mach/irqs.h>
5 m& L+ S& K& v: a
#include <asm/hardware/edma.h>
6 A q) ~) v7 F+ F8 l; E# f* }
5 h7 s9 f b7 D# x' O8 w% W/ g
#undef EDMA3_DEBUG
+ v! [( h$ `, f+ s1 E
/*#define EDMA3_DEBUG*/0 e, w5 o- S: o9 y+ B+ Q
: W/ s7 ?' [- u7 z1 c, c9 _
#ifdef EDMA3_DEBUG4 _2 P' l, `5 u
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
' c+ B' x8 T6 e9 k1 j0 ]
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
6 c" N9 G1 s$ w+ a) W
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! S) F; [9 m( B! f, X- x/ |
#else
, U' }% K& u) f) K
#define DMA_PRINTK( x... )+ e, j3 F8 h: r7 ^
#define DMA_FN_IN
`, |/ o7 t: t7 d1 P( @" `" l
#define DMA_FN_OUT5 Z: ]% p/ w' ?& h
#endif
" k, u- L) K! ?
' U2 h4 ], P' L+ i" @
#define MAX_DMA_TRANSFER_IN_BYTES (32768)$ B) Z1 {+ g& ^# ^6 p# h9 g. Z* I u
#define STATIC_SHIFT 3$ a' a6 O1 [3 k' b; J; a4 s: \
#define TCINTEN_SHIFT 20
: Y! e4 l; q4 j8 _* `
#define ITCINTEN_SHIFT 21
7 j/ K$ Y: u1 R: d& n
#define TCCHEN_SHIFT 22
+ d7 C4 @. E) t/ ~$ L/ k) K
#define ITCCHEN_SHIFT 23
- ^( M7 h; ?" s3 r) l$ m
: m2 V1 |6 w8 B0 k2 T& F5 Y
static volatile int irqraised1 = 0;: _) C* O8 P9 Z7 L# P: Q
static volatile int irqraised2 = 0;
1 J" F) r7 X# O* b
p& L1 K; }0 f$ u4 A2 @ ^" G
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
+ L! ~0 C: S2 `3 J" ^
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
( n5 ^7 i' L# j& v. f
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 H/ j8 L# k; [0 i+ x4 k8 X3 K; c3 v
* F0 @1 g- c5 ~' u! Q# F" Q
dma_addr_t dmaphyssrc1 = 0; i+ ^$ N$ ~8 G( ~
dma_addr_t dmaphyssrc2 = 0;+ t4 ?: A3 D& c9 h4 c6 s' p" j
dma_addr_t dmaphysdest1 = 0;
1 Z- q0 i- E5 @6 {/ G2 ?! M/ {* K- o
dma_addr_t dmaphysdest2 = 0;6 r- ^' P: R1 a& O& b' Z) _
# c1 ]1 ?. [2 ]& C) a. p2 V
char *dmabufsrc1 = NULL;3 a8 W6 Z; c$ a" k# [/ J& J8 n$ w
char *dmabufsrc2 = NULL;
/ `! n9 m3 v& m$ {# H$ G
char *dmabufdest1 = NULL;
. N+ m9 H) B. f+ l
char *dmabufdest2 = NULL;/ f! g, _* c1 g
% z" W7 {; P3 j& a) q0 K
static int acnt = 512;
! I& l" f7 a. z" n7 S
static int bcnt = 8;
2 n6 j3 C9 b7 B4 \" |
static int ccnt = 8;) P$ @/ D/ ?' f
. P0 z$ i3 ]6 W* Z+ ]: z+ V
module_param(acnt, int, S_IRUGO);0 L+ S1 V6 _* t5 C7 N% }. U e
module_param(bcnt, int, S_IRUGO);
9 ~$ L# [2 g8 @5 Z+ Q; Q6 Q/ 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