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 application8 b I) g2 q+ C4 `6 Z
/*# {7 [( A, o# A. }
* edma_test.c1 [" c- J5 V; \3 x
*
8 r9 s5 F% X/ q( z$ e4 f1 S! j: t
* brief EDMA3 Test Application5 G1 d1 j+ _4 ]$ j, X1 o% ^' p4 R. \* @- u
*
/ H( b! a1 Z0 Y
* This file contains EDMA3 Test code.4 r; ]: C: d7 \2 `8 E
*7 f, p5 s3 H/ [# Q2 }
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
; V2 [- \; j8 A% R( G
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, X7 w1 X! r! S8 e. Y
* TO CHANGE.
1 r# g: R. e D' Y
*! x! t$ e& A; l# q1 u: }
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 r: `3 { Z+ s, @; I4 M; i+ s7 I6 s! K* Q
*4 W! O' j0 Z. W6 b1 E( t
* This program is free software; you can redistribute it and/or
1 j6 S% j1 R5 c, y
* modify it under the terms of the GNU General Public License as) {: @" r% O* i. Y
* published by the Free Software Foundation version 2.
5 P0 C. M3 T2 t5 ^
*, i5 V, N; x, F% r5 d" X% V
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
' r3 v9 p' z' c ^: V2 J
* kind, whether express or implied; without even the implied warranty$ B2 z" B& v" s2 f( j }. g# @, F, ]9 m
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
, S: }5 p4 x) m! J
* GNU General Public License for more details.2 D; k B( a. n0 a
*/
3 t3 A h- X! j
7 T D5 I3 {! ?: Z6 Y. I
#include <linux/module.h>
" n' b2 N( Z( R$ Q, ^
#include <linux/init.h>% R- q% O, i7 W6 \: u
#include <linux/errno.h>8 t& f: G7 [8 _; }4 f, N" r5 ^
#include <linux/types.h>0 S/ J" q" t; w- A i/ ]
#include <linux/interrupt.h>
; |- h, [& |! V& f% Z* b! E' ?
#include <asm/io.h>9 y- v+ V( Y; _; I
#include <linux/moduleparam.h>3 v" @& y5 \0 N5 \" d; N
#include <linux/sysctl.h>
z9 i, l! K, a6 F% u. {
#include <linux/mm.h>
5 u: o/ m7 y" l9 t) E" y
#include <linux/dma-mapping.h>/ {; j1 |* g- G) g' t
% m' j- D* [5 m( D0 ~! g& |
#include <mach/memory.h>$ d9 V( n) ]! m- P
#include <mach/hardware.h>% v+ _5 s0 q" z$ }
#include <mach/irqs.h>
6 {6 o! d' j6 N: ^. ~: v8 x1 _
#include <asm/hardware/edma.h>% _+ r" O* o# u
) G& b: l/ p6 U) W- A4 @
#undef EDMA3_DEBUG
+ G B- s b# d
/*#define EDMA3_DEBUG*// t7 K. q( |" A$ A
* F4 k |3 f, b1 S7 d: W: k: ?
#ifdef EDMA3_DEBUG$ F) v- V7 f. D
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)' F. Y6 M. V$ d: m) M7 B' O
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
9 U. e3 N2 B }0 A7 b
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)6 X/ O, O+ r- ]* F6 Y4 ?' n
#else3 f) `2 O2 L: o1 j7 h
#define DMA_PRINTK( x... ) j! p; g8 _1 I& `5 b7 v; f4 f
#define DMA_FN_IN. m3 D+ F9 N) U
#define DMA_FN_OUT4 ]* r: h& l3 s2 p( |
#endif: V- l# j$ B( ^5 f a1 l; w3 D5 H( X* b
$ }8 w5 O K+ Y; [) m
#define MAX_DMA_TRANSFER_IN_BYTES (32768)# O' G5 b* m* n6 y# N" s8 v! M, ?# B
#define STATIC_SHIFT 3
8 W( W2 b* o8 q7 d% Y& g/ Y9 o
#define TCINTEN_SHIFT 208 w! d7 w/ D; ]" I- S
#define ITCINTEN_SHIFT 21- P+ Z+ X# |- S
#define TCCHEN_SHIFT 22
T& y; K7 _& D7 r
#define ITCCHEN_SHIFT 234 e! \0 }; A2 R" W4 z) p) L
9 ]: G5 I2 A& r( I, e) }% H5 i, Z6 e
static volatile int irqraised1 = 0;
: ?- j4 l+ }" u& x6 J- r6 x! }. D
static volatile int irqraised2 = 0;& q- B; ]9 e" e% K7 R1 z3 ^* T' p
) }" D+ a8 X0 O6 M0 @% |: ~
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% I E1 i/ p; g4 K) z$ t
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
3 t* a. X0 N( v+ M
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 ?( `* K- {6 M. I/ ?
0 z, i; H: ~3 L1 S
dma_addr_t dmaphyssrc1 = 0;
2 `# n' l* t3 j# _9 j
dma_addr_t dmaphyssrc2 = 0;
- O* C) r1 @/ {, y! w0 y9 z, {
dma_addr_t dmaphysdest1 = 0;
! Q, Y4 W) S8 ]0 |- \
dma_addr_t dmaphysdest2 = 0;$ x% B U% Z" Y0 J9 j; X; ?- y, x
G9 e0 g0 `2 H# @
char *dmabufsrc1 = NULL;
+ e. \! j+ d2 @8 t
char *dmabufsrc2 = NULL;
7 E( s5 V; z5 X
char *dmabufdest1 = NULL;4 v9 W5 H) M1 d {
char *dmabufdest2 = NULL;0 F9 h' X8 Z( R0 w
0 M1 U d8 z2 M! U* @. J
static int acnt = 512;' I% N- o3 u5 ^* m: R# g
static int bcnt = 8;8 G' R4 L1 }, K& Z# V! x
static int ccnt = 8;
! x# w/ U2 t" S, |0 a/ y3 U8 n
' G, Y0 }, Q4 |6 D4 x1 ]$ V
module_param(acnt, int, S_IRUGO);
! d8 T' d' J0 o7 g, _7 q# O2 f
module_param(bcnt, int, S_IRUGO);
p O6 F& G# @! U
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