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
7 V& O/ x0 y1 Y: b1 r
/*
5 b8 Q" c) d* ~0 u
* edma_test.c6 v: A3 T; D) G
*2 a8 e% `; m) [5 S
* brief EDMA3 Test Application
8 U2 u0 b7 B/ {# e. z' R
*
' I& ]. ], ^1 o/ p1 d
* This file contains EDMA3 Test code.
- ~; @' M' \/ z+ g0 }3 L
*# G0 g- K5 H: `. k
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE" n9 R, B, e' _7 T
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! d K4 W3 l5 u
* TO CHANGE. ~2 h: v+ R# X7 q/ Y, J
*
9 R _9 S& w4 x9 \, \6 I+ [6 V* y
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ i( Z! K& m3 o* ~3 y+ Y1 |
*9 T% q( b+ L- x# }' m: y: b
* This program is free software; you can redistribute it and/or g) u8 Q- v1 {% j3 @0 v. j* q3 t
* modify it under the terms of the GNU General Public License as9 F# I% u( d$ R) F1 t& X$ Q; B& @, F
* published by the Free Software Foundation version 2.% ~. ^7 b N( Q6 T5 }' t8 G& G
*/ B" ]2 N& ^5 P i; `
* This program is distributed "as is" WITHOUT ANY WARRANTY of any& @* X) \8 X$ Z1 m
* kind, whether express or implied; without even the implied warranty
! [& `, ?$ `" M) A# @1 F
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, G+ _' ~# g/ D, K4 r
* GNU General Public License for more details.
! n; P; f. A. f
*/
! o; Y3 }! r8 ]" V& T7 ?! v! X
: `3 f; ? h4 ~+ P
#include <linux/module.h>+ X7 u7 | [- V) B& g4 L0 T8 K
#include <linux/init.h>9 s& ^/ {7 b- d8 y
#include <linux/errno.h>
$ o& ?( a; E; [! H/ ?
#include <linux/types.h>
. R6 M, S) @2 ^ ], D
#include <linux/interrupt.h>
$ |' J q; m& T, ~) [
#include <asm/io.h>5 r; S% ~8 A& _; V& G1 a: P3 c
#include <linux/moduleparam.h>
- M5 K' h1 H. ~! z
#include <linux/sysctl.h>$ m4 o- n2 }1 K( S1 }
#include <linux/mm.h>
# A+ X( u$ T5 b. |6 H. V1 O0 |
#include <linux/dma-mapping.h>
6 |9 ]9 R3 m" o* r4 [- w
a+ R A( C/ p$ S* E: c. C
#include <mach/memory.h>
% ~' O2 E; b" b% j8 p. c! S
#include <mach/hardware.h>
1 a8 a: F. _! g( @0 w! b
#include <mach/irqs.h>, u( |; P0 ?9 l7 d1 l9 \; n5 K
#include <asm/hardware/edma.h>9 Z0 N$ E6 u6 ^! c( Y+ i5 ]
- t% U x. F1 c i* }: ^6 o
#undef EDMA3_DEBUG
- L/ s4 h8 l- E
/*#define EDMA3_DEBUG*/
3 R! Y, r S$ I
$ q& X% }$ f2 G+ y1 F
#ifdef EDMA3_DEBUG( |2 p) u" _8 r3 d& T5 Q! l. {- h
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
. C! R5 J* y' y! |4 r. ?! N
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
+ W( D- W9 u, N+ L3 w4 G' v- i
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)7 T9 b- l F" \
#else
, a- E' m: z( G1 s
#define DMA_PRINTK( x... )
% Z, k& E. \( k
#define DMA_FN_IN9 w4 C x3 }9 r
#define DMA_FN_OUT7 I v/ D8 w0 s2 D( U9 |0 t9 |( \
#endif
1 w* L" R$ T8 }
/ Q+ V4 Q& l ^) ]1 C5 s1 Q( ~5 e
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
0 H( }" X9 j. B0 a( ^- V- ^
#define STATIC_SHIFT 3 k+ F2 q; }& b- L; u$ @
#define TCINTEN_SHIFT 20, o5 x% _; U4 }$ ~0 E
#define ITCINTEN_SHIFT 21
0 w- p+ k* w3 O& o
#define TCCHEN_SHIFT 229 }+ I" k) Y; G0 `
#define ITCCHEN_SHIFT 23
" q# ]9 v, k: [2 r$ e Z+ G) ^
: e& E( m0 a9 S! L
static volatile int irqraised1 = 0;+ \- V) ^% G% G9 ]
static volatile int irqraised2 = 0;
0 ?' f7 m( T/ |) b
- }1 v7 ?9 |4 u; t+ W# |
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
4 f% Z8 H" x+ K% w: V# ~6 ]0 r2 Y
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
. U; e+ C2 f0 [2 G' K9 f! P8 q+ ]
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 O5 M/ a6 f) C n
4 O2 e7 J$ G% v) O4 P
dma_addr_t dmaphyssrc1 = 0;; A" K5 d M" n6 J2 \
dma_addr_t dmaphyssrc2 = 0;% P1 i" v' z% i2 w1 ~/ H9 ?% ?$ `
dma_addr_t dmaphysdest1 = 0;
, H3 e8 z. g" r/ |' ?
dma_addr_t dmaphysdest2 = 0;
; y" j8 s9 P) W7 A5 C. N0 c" }
0 p* t$ f6 m; z6 g
char *dmabufsrc1 = NULL;
+ I: M' {* z% r0 r" t% H
char *dmabufsrc2 = NULL;
* w7 T/ o% U! a+ f) m& L8 T2 [ H
char *dmabufdest1 = NULL;& M( h- h( D. n+ R
char *dmabufdest2 = NULL;
. b4 c% Y5 ]& g4 q5 M
, X' Y, {) Q/ Q" Q2 ^8 B
static int acnt = 512;# F+ t+ V; n) c9 i
static int bcnt = 8;2 ^( e% M4 T& N3 n& H
static int ccnt = 8;- ~' c- e0 R9 H2 D: Q+ m6 `
% H5 f/ Q3 p1 [5 h0 l
module_param(acnt, int, S_IRUGO);
1 V. R6 B [4 E( O' U
module_param(bcnt, int, S_IRUGO);$ }% s. C$ b' 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