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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/*9 k8 s; |1 B; `# S
* edma_test.c" ^! J+ f" i* `: e/ V1 Z. t" v/ V
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* brief EDMA3 Test Application8 |3 q6 O# s& a) n
*
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* This file contains EDMA3 Test code.0 P W& g& n8 [! y1 d b M
*
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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 SUBJECT4 I1 _. |, L! }/ x- z) v# W- L. l5 @
* TO CHANGE. y; X0 I: @# E6 {8 b
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 d; o% ^' T) I& B
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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 as9 q4 K% |3 V S+ J7 @
* published by the Free Software Foundation version 2., X! \6 W4 p( p1 I/ n; F
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any, S5 ?$ D) g+ W8 C" d
* 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.
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#include <linux/module.h>% J: t8 w R4 `0 s$ Q0 O
#include <linux/init.h>7 x6 L: x3 L+ `0 j
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>) V) e- C1 I+ S1 Z+ @2 |
#include <linux/moduleparam.h>; h. J, J2 x( K+ u
#include <linux/sysctl.h>. ^8 b+ p4 H; P: o0 X
#include <linux/mm.h>( ]/ x. c0 W, ~9 g. s
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>- R' B) P. c( b r: b+ u& [
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/4 K* \3 i1 o6 U( A$ P
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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 C! Y Y+ @. c5 a
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )4 j. t" V) N3 S6 ^
#define DMA_FN_IN* D) O4 M3 \( w, n7 `: c% e
#define DMA_FN_OUT' X3 Y+ Y) f6 [# X. L# F8 y
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)6 F) W* [$ S9 s5 k1 U: f
#define STATIC_SHIFT 3
#define TCINTEN_SHIFT 20- G$ T" {( L) P" @7 o% ]6 x
#define ITCINTEN_SHIFT 21* m7 T3 |/ Y/ {& E# F0 Z; X
#define TCCHEN_SHIFT 224 Q! t. d: J/ v# [9 g% X
#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);1 r/ l) f) ` t9 s) c
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' d U/ k' U7 G0 Z2 x! C3 m p
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ Y+ {/ }! t& F$ W
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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 g5 z& N8 c( Z3 `
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;9 E; y& Z2 D3 Q( l4 [( m0 P: z" N
char *dmabufdest2 = NULL;2 t; G" y( v; T, z% V
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static int acnt = 512;
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static int bcnt = 8;0 Z) }" i' u9 y! ^% }. P2 g
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);) B4 v0 x/ F# z$ 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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