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 application1 F4 A" A* R& \3 H, W
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* edma_test.c" t: H" o9 J* `: S- f2 z! a' y& q( ?
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.2 L n9 i" u1 s
*
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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 SUBJECT0 b! P9 I/ \+ v+ ~6 M2 M; p
* TO CHANGE.( \; T5 A! Q. Q: t) |- H7 k
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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 B# g O6 ^! _; p% z
* modify it under the terms of the GNU General Public License as2 |& M$ L& W1 Q! h- T
* published by the Free Software Foundation version 2.
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*
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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
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* GNU General Public License for more details.+ @; p+ [$ t. l; Y) ^* y- A/ B8 C
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#include <linux/module.h>
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#include <linux/init.h>& h( u$ N: g. _5 a) P& b, }
#include <linux/errno.h>
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#include <linux/types.h>% Z/ I" P0 \0 U4 \
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>3 t3 z9 e" m& `7 U' b) x# H0 S
#include <linux/sysctl.h>+ T" B0 l' {7 u6 K% Q
#include <linux/mm.h>. D9 ^- W' U0 @" I6 P7 {
#include <linux/dma-mapping.h>
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#include <mach/memory.h>- j7 s' ~& Y& n- U1 L: N# p- a$ @
#include <mach/hardware.h>
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#include <mach/irqs.h>% O/ G8 Q) e4 T% F' G1 H- O8 M2 I
#include <asm/hardware/edma.h>* X7 C! s* D( s/ [+ G
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#undef EDMA3_DEBUG
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/*#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__)7 r* R; O& y- H' A$ ^" {: I
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)( ?- x5 ]2 T4 R0 ^ x' P
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#define DMA_PRINTK( x... )3 D0 y" U4 O2 _0 a2 [) M
#define DMA_FN_IN
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#define DMA_FN_OUT! T0 h2 Z8 ?5 W }- H! r8 k
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)" a1 @3 m5 a' t | r' h1 B
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 208 Q; H- P" c# }. S4 x0 S6 @; h
#define ITCINTEN_SHIFT 21- i+ [' J5 I( ^% |% c/ _
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;8 U4 U* Y! t( @( \4 w% ?: y
static volatile int irqraised2 = 0;. L0 A( Z. o- b- [% o
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 W3 A$ K: a& y) c
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. |4 F3 B: g+ ]0 k* E( G0 [
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% o4 Z, V+ R6 J$ I4 w H
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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;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;0 O- }8 \2 e! m W) t3 x
char *dmabufsrc2 = NULL;5 d" U& x) Y* C
char *dmabufdest1 = NULL;: h) D+ J& m5 Y$ l/ M/ T
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;8 g, A9 b, h* ^1 y
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module_param(acnt, int, S_IRUGO);/ y( g: Z' P4 y2 l
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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动