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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/*
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* edma_test.c7 g- g. S, T/ P* O: T# C
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* brief EDMA3 Test Application+ k# ~) S: [. b1 y
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* This file contains EDMA3 Test code.
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*
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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 SUBJECT+ B; Q- w0 v9 ?* H" Y1 S O) e: Q
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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$ ~, z& b% @( B# [; h/ o. }
* published by the Free Software Foundation version 2.
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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; r' T a( t5 v( x' i+ p
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. ?- A6 B2 s$ E- a; h( j- q. g
* GNU General Public License for more details.
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#include <linux/module.h>- G1 v$ ]/ [3 h- _: `& Y! E
#include <linux/init.h>) |5 m. K- M' w1 S2 i9 o. U& S
#include <linux/errno.h>5 y& p+ M; u9 _
#include <linux/types.h>8 |7 P" \% |. F. t# o+ z, J) u
#include <linux/interrupt.h>% B+ T" `* ]5 @' t: ^
#include <asm/io.h>) ^4 N, z( J( O* Q& L) t
#include <linux/moduleparam.h>: M- h' w+ s/ K4 d
#include <linux/sysctl.h>
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#include <linux/mm.h>1 Z9 n$ k8 Z/ G, a( D
#include <linux/dma-mapping.h>( ?* z, O+ R$ g' D) ~9 ~7 C& E' _! B5 H
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#include <mach/memory.h>: q- d. t2 Q. Q
#include <mach/hardware.h>- J3 [) L: O* b0 R q d7 E+ j
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>% b, d: H6 g8 O
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#undef EDMA3_DEBUG: q( j4 l |! J, }, P
/*#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)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) F' W2 h+ W0 e9 X+ {5 Q6 U6 Q0 V
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else4 b$ n- C. O: g4 ?4 I1 \3 V' _$ o4 S
#define DMA_PRINTK( x... )2 }0 s" G6 F4 J! |) R4 Y
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)' g- d8 ?- Q6 g4 I' i4 ]- v
#define STATIC_SHIFT 30 [8 ^% C0 y. E( B. Z
#define TCINTEN_SHIFT 208 T1 U! v- @/ h2 I: L' }6 p
#define ITCINTEN_SHIFT 21$ {6 @& [( `4 K3 x
#define TCCHEN_SHIFT 223 l/ D! X4 m" w. R2 I+ |
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;6 ^4 s9 [5 r1 {" H/ }" W0 U/ c" U
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 `& ~8 i# H( P9 z
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;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;8 m1 g0 i/ |( @
dma_addr_t dmaphysdest2 = 0;) j( x( }% d/ P7 g5 a
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;& y2 y: s' U5 ]2 C6 l; m, b; J
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;7 v% u( _$ N5 _; ~
static int bcnt = 8;
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static int ccnt = 8;( A$ }6 U- K5 s0 Z
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module_param(acnt, int, S_IRUGO);' O$ I0 q; O- h W- Z* I% x
module_param(bcnt, int, S_IRUGO);. l) F6 Z3 C [6 q
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