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 application3 Q0 Z+ j. D7 S0 ~8 P( F
/*4 ~2 t5 Q# P& ~* g: l! d$ [
* edma_test.c5 s/ L: Z3 T( e9 G
*
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* brief EDMA3 Test Application j. I1 _; {9 @/ v$ H
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* This file contains EDMA3 Test code.8 v+ k* I$ `3 ?& ^; l! v
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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.1 | j( D" H1 q$ M5 A6 e( Q. P
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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* o4 A# a/ w2 z5 }3 Z. `' R
* modify it under the terms of the GNU General Public License as# V! W0 @2 \! ^$ O- U2 x; A. W
* published by the Free Software Foundation version 2., q5 z, O9 {" _& Q* y% F( F4 ?+ m9 h+ h
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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 warranty0 N/ T; c! m2 {0 q5 ]$ E, l9 s: _* h
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details." r$ \: h, a) u$ @% d
*/
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#include <linux/module.h>* H: q$ s0 t- x: J ^
#include <linux/init.h>5 j8 O) ], x9 }7 R7 ~" X
#include <linux/errno.h>* L. h+ d7 e* a5 a% H, |
#include <linux/types.h>; J5 X4 W1 |# B7 E
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>8 [0 u3 W; I5 r: q& i
#include <linux/sysctl.h>& y8 f9 [: R0 q4 M% o J* K
#include <linux/mm.h>
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#include <linux/dma-mapping.h>. f% v+ n. v3 P9 D7 N: A
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>+ m/ J. h3 |! ~$ G+ B/ C
#include <asm/hardware/edma.h>) X( }. [, z6 K/ f
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/. s. k4 x/ W/ F4 \
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#ifdef EDMA3_DEBUG6 e9 p! B+ g" r& w) e+ v8 a
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 F/ g2 h+ U1 R3 B
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ h( ?# N& ~; M* D5 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... )* L; `* f" f2 h9 g! H. O- }% w& B2 v
#define DMA_FN_IN
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#define DMA_FN_OUT" J& Z" ~- \6 h# v1 _4 v
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 216 @1 o! x2 R$ ]$ }
#define TCCHEN_SHIFT 222 L! Q6 W% ]- E+ d8 ^7 M/ B
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;5 W, Q! h* k& I: j
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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);
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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;+ B; [" k: M/ ^3 V& M6 W7 o
dma_addr_t dmaphyssrc2 = 0;& w; G0 w& h- C, g; H6 T- ^
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;7 s- z, ^1 p2 J2 Q6 L+ u! K8 ]
char *dmabufsrc2 = NULL; `# ?4 c8 R. M
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;# F4 K3 s. G8 m) n/ c+ v9 o4 A
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static int acnt = 512;
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static int bcnt = 8;# c O2 r1 k0 l, Q
static int ccnt = 8;# _# f+ |6 r8 V' D% h
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module_param(acnt, int, S_IRUGO);0 S A) \$ d D, j6 X# R/ Q
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