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" Y/ G5 L4 Q7 \6 x1 f& b% I0 u% t4 b# @
/*
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* edma_test.c
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* brief EDMA3 Test Application( D0 _' p7 D2 W3 ?4 m6 D/ J9 e
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* This file contains EDMA3 Test code.0 D$ a# j! t5 e3 z; ~8 e7 o! n% \$ u
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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
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* TO CHANGE.7 v" t2 J' R& K3 b$ R
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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$ U; g( a0 J
* 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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 n# P4 Y, x( J+ B" {, a
* GNU General Public License for more details.9 P* i" a3 F: Z/ V7 t4 t
*/
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#include <linux/module.h>2 i+ {' l3 k- e
#include <linux/init.h>+ m8 [- V* j! K ^% e9 Q
#include <linux/errno.h>; [7 g" {; C3 }. O/ L7 m2 \
#include <linux/types.h>
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#include <linux/interrupt.h>+ A- O8 H5 w' W. I
#include <asm/io.h>
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#include <linux/moduleparam.h>2 Z1 y5 @! _, w) s' d' ]
#include <linux/sysctl.h>8 g F$ p5 d m9 U% W' v, L
#include <linux/mm.h>
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#include <linux/dma-mapping.h>% [1 F. r$ w2 p' @9 j
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#include <mach/memory.h>$ m" B- |+ R6 ^. G
#include <mach/hardware.h>
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#include <mach/irqs.h>7 a; B9 F/ O& F/ F4 }
#include <asm/hardware/edma.h>0 b) s$ M2 l: X: G( d- l7 F1 \& J0 o
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG3 t' \$ ^& j# v) R2 I( w2 W
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)0 }2 w/ C6 p6 J" o& ]
#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__)5 A8 L1 F1 x4 b" \5 s* g. g$ W
#else+ M4 k/ y" x1 M
#define DMA_PRINTK( x... )% h. ]9 A H2 _1 ~( Y
#define DMA_FN_IN; [8 c/ \- w% W9 m: ^0 J2 f8 K2 u
#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' ?- m( f ]' @- H' ]9 K, A
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21# D6 m# Z f! ~
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 233 `2 H" u/ V; |- H- o8 A; D1 r
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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);) y, ~& e) G* f3 e/ r0 n
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 t8 y2 I7 \) b6 H7 J# A& {" F# g
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;# t. e* v0 D; E) o) Y
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;! U$ G! J: s; Y
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char *dmabufsrc1 = NULL;9 z7 B4 k# }0 }( Y6 l
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;' f/ K; {5 ~6 l' B8 ~2 o
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static int acnt = 512;. \! E o1 e$ F- o" |! S
static int bcnt = 8;2 d3 O; X; j4 e) D. F( K
static int ccnt = 8; J% p* {6 a) s' g. i! M
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);6 ^+ r8 t O! v3 U7 h" a
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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