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 application5 v/ `2 }( G7 I( N5 W
/*
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* edma_test.c# L u2 g* \* f: }4 p
*
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* brief EDMA3 Test Application" I1 G3 V- q" Y( ~% @; { D+ f
*
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* This file contains EDMA3 Test code.( D. u7 ~$ H; _1 l' P6 W
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT6 h: M; U2 `+ [2 v9 b
* TO CHANGE." p- x7 F5 T1 i, e1 g& B
*
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* 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/or
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* modify it under the terms of the GNU General Public License as' b+ \; s( X" l3 O; a0 _0 f
* published by the Free Software Foundation version 2.! ]1 W( u# O% A. Q/ @5 k
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ |0 `+ p% B, ?% F
* GNU General Public License for more details.
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*/; d; \/ _' K) n& A
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#include <linux/module.h>9 K0 W# g4 C1 N5 D7 H
#include <linux/init.h>. N& A" M7 \% p+ c" c) n/ P
#include <linux/errno.h>$ a. i* y# {9 Q3 i! t! b8 k6 o
#include <linux/types.h>
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#include <linux/interrupt.h>9 O3 E$ \$ U$ R: P& L# O. n; t; l" t
#include <asm/io.h>! x! `+ g$ B! y' A
#include <linux/moduleparam.h>' m' N- m! m, b
#include <linux/sysctl.h>2 R4 x; d+ C0 H
#include <linux/mm.h>
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#include <linux/dma-mapping.h>4 ] y1 u" J8 i5 s! _
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>0 B1 S* o9 s- |$ L! i# b
#include <asm/hardware/edma.h>" ~' s, {) F$ N m+ O7 y
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#undef EDMA3_DEBUG0 Q6 Y2 [) J7 ?2 y2 N' `' f$ I! q) q
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 [6 j! }1 a& a2 P
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else) H. f. s& r* y2 q
#define DMA_PRINTK( x... )2 S( j/ i9 N" o' P8 R
#define DMA_FN_IN
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#define DMA_FN_OUT0 i8 Z, e( D1 U' z, i% c
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)" d& j: A2 j& B k
#define STATIC_SHIFT 3- D9 B. A2 X1 Q5 a" I5 s4 Y! i
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21. s7 B# [, r8 [* k j
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;4 w1 k0 B, q' f
static volatile int irqraised2 = 0;4 _. D z3 F, Q, R, n: ]' ^
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% Y, O0 `4 h# [1 T/ Z* q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* B+ t) P d7 q) @% \$ Z# U
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;6 Z* f s2 c* d* }
dma_addr_t dmaphyssrc2 = 0;3 s0 K5 m) j/ a C0 ^
dma_addr_t dmaphysdest1 = 0;% N- L* C. J- K# p! t, r
dma_addr_t dmaphysdest2 = 0;/ ]+ Z+ R( s2 ]
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char *dmabufsrc1 = NULL;( K- u9 z/ T9 K: `" e
char *dmabufsrc2 = NULL;& A/ C3 g# _' q! d6 O/ O
char *dmabufdest1 = NULL;: [6 Y+ ^. o0 o; R* I4 ~
char *dmabufdest2 = NULL;
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static int acnt = 512;) J' s8 m N8 ?) ?* G$ n X
static int bcnt = 8;) l8 f( ^+ u$ q7 |
static int ccnt = 8;% R- s& m' @* c6 G9 ~
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module_param(acnt, int, S_IRUGO);9 R' \9 U7 [# v u6 c& X
module_param(bcnt, int, S_IRUGO);
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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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