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
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/*$ m0 y7 v7 q5 F. }( E
* edma_test.c" }3 |/ F3 ~3 o* k2 ^3 X
*
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* brief EDMA3 Test Application; P$ Y0 B/ Q% E3 C
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' K( s/ w, \- D" D* _
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.! [/ b) i/ y! C" n8 C4 d, m
*- E4 Q8 U* i; e" T# }0 U( h
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or6 e0 [7 [$ c8 W: `. ^( e1 {0 a
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.+ a' A. K' a9 g1 U! A0 C5 J
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ {5 e9 k& z3 y9 l
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 ?& q; ?8 s2 i5 K% _
* GNU General Public License for more details.8 Z, y2 l4 L O$ B
*/
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#include <linux/module.h>9 Y' L- r. |! o H2 M' G
#include <linux/init.h>; U4 [" B+ a+ B2 ^& p" N! k
#include <linux/errno.h>5 U7 C$ D6 J7 ?7 d: i6 U
#include <linux/types.h>+ t6 w" w# J! E& {( @3 y! g
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>5 c: ~1 ?8 F5 K# H e" d# v D
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>" y G5 Y6 v& E- [. R2 M. \* `* H+ y
#include <mach/hardware.h>, V# w- h$ x+ {. _ q$ q5 |
#include <mach/irqs.h>4 k8 O" k W5 [, r
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/9 U, B% G4 k R4 j3 R
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#ifdef EDMA3_DEBUG/ q& z5 D5 X. O. @( a$ g
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* }; F5 ]/ U( B0 s1 r3 M1 I3 E
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 j* \: i3 i7 Y" Q6 @
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ I# s9 I z9 f. {4 x
#else& p) d; Q: ]+ s2 K) C
#define DMA_PRINTK( x... )
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#define DMA_FN_IN2 ~0 U* U4 T9 q. j! W
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21/ {; B5 Q) Y2 `; R! O# i
#define TCCHEN_SHIFT 22" d& B6 } o& I9 e, p: t7 F- \
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 z: | j1 V6 F2 u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 U, v. q7 S& v5 T; A/ [. O' z# a
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;1 W& t4 T# F) H2 s
dma_addr_t dmaphyssrc2 = 0;. \: E* f! ^7 y0 B1 z$ \# p
dma_addr_t dmaphysdest1 = 0;* g5 K3 N' O" v& l9 b5 h
dma_addr_t dmaphysdest2 = 0;7 P J9 K8 f, Q, j& y! b( ~
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;, Q) {4 g& I9 T5 q& @ y! y
char *dmabufdest1 = NULL;4 A ?- m, {% M7 I x; ?9 A. e0 n
char *dmabufdest2 = NULL;# `) ]$ K/ j* g. R1 Q- q
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static int acnt = 512;! Q* l- ~( v3 T# Q, u6 P# R( F
static int bcnt = 8;! m5 r- }: X3 p
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);! W% B" O Y# G/ c5 ~
module_param(bcnt, int, S_IRUGO);1 v! V$ B- W. Z
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。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动