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.c) v: p7 n( K2 f" T2 k
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* brief EDMA3 Test Application9 Z g9 j* H8 l* a$ ?3 e
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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. t6 G- X: K3 z' ^1 z1 V% c
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/- g& c2 c- N0 l- C
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* This program is free software; you can redistribute it and/or& A' z* Y6 x. w0 Q+ O
* modify it under the terms of the GNU General Public License as" v- k" t0 ]( i$ t
* published by the Free Software Foundation version 2.0 K0 H3 n$ d. F) b$ v/ k1 z+ q
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any( N( x( [- Q2 I/ o3 O
* kind, whether express or implied; without even the implied warranty, {* c' l- \5 v% S# T
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the' C6 y& E+ U4 Z q8 e+ q
* GNU General Public License for more details.) ?3 H9 q" c+ i+ B+ k
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#include <linux/module.h> }. b4 b# o( X9 |
#include <linux/init.h>
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#include <linux/errno.h>" r1 j+ M, y$ m6 A: p! ~% N
#include <linux/types.h># I2 c! K+ Y, C. ~* `2 C; i
#include <linux/interrupt.h>0 R! N) i9 ^9 |$ T3 u* }
#include <asm/io.h>
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#include <linux/moduleparam.h>' s$ c: T0 b6 e6 h) s
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>+ N/ j' N! G$ B- Z: z* p
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>' Q+ R9 J7 R# ?6 T, q2 o O
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG7 r) G9 Y6 J R; s% l! r) 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)
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#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__)1 X0 j5 n* z/ q6 C$ n
#else# D4 O' ~# F4 z% p2 d
#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 T% @4 C/ S2 Z2 W% u
#define DMA_FN_OUT3 U h( z" [: ^" |
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): y( ~6 V. v. i) v. o
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21, t" ?: Z% D2 K+ K
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;' P5 j+ J0 C: a5 w U/ ]2 ~
static volatile int irqraised2 = 0;5 }1 C& v) u# U; @" V
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ d# ~$ i: `3 f% S
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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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;
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dma_addr_t dmaphysdest2 = 0;( o+ K- Z2 [$ K' w- @# o2 U
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;/ }& q1 K7 c- u, w( M$ d
char *dmabufdest1 = NULL;- J1 T) D9 ^0 e1 ]8 s' 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;
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module_param(acnt, int, S_IRUGO);4 o& |0 a$ t2 x) Y) G1 i) r# Q/ F
module_param(bcnt, int, S_IRUGO);: [9 E- D8 F2 |8 F9 A* P2 [
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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