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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/*$ b) W5 B- l& E
* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.4 v, y$ W" o- C2 c1 I
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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.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( u1 ?" N8 e; |: ?* p2 ~
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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
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* 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 any6 ~/ q! E8 i2 }3 d& B
* kind, whether express or implied; without even the implied warranty M M! e! ^4 S7 T- r9 F
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& E: P$ B& h# V) q; P) l/ W4 B& a
* GNU General Public License for more details.% k5 @# Y& H) ?" G1 h; r) P. L
*/
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#include <linux/module.h>) ^: G0 \- u* Z) p6 r" v. ^( E" `
#include <linux/init.h>8 g0 a; ]- O! u5 m+ f& N
#include <linux/errno.h>, \1 U Z. p0 H* C* {
#include <linux/types.h>7 z0 e0 z4 G1 ~ J
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>% N5 x' C' ~6 O0 r* W/ f/ I
#include <linux/mm.h>7 m8 e0 y' f2 M" |8 ^1 z7 S
#include <linux/dma-mapping.h>7 G `% Q) y/ f5 {4 c, U
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>& A' o' u, w* P
#include <asm/hardware/edma.h>6 p+ M4 B' Q A+ `7 K
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#undef EDMA3_DEBUG* Q+ R3 t5 x8 D
/*#define EDMA3_DEBUG*/$ q5 q) q) ^( y- }5 o1 [0 x- F" ?
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( P o$ P6 \. ?& D' w
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)* Q# @$ o( m& B6 g) z {
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)/ Z w9 K. U, k% u) }
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN0 `. E* \9 j9 ~4 J
#define DMA_FN_OUT6 P I5 p. x4 g- q* b) X0 x! d/ K
#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, e6 {0 l- ?1 g- O; [3 d1 L
#define ITCINTEN_SHIFT 21* l, f8 G$ D9 f5 L
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;) H9 K8 ~8 I2 @9 n& x+ V
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);5 I. H# ~; A y) M
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ \7 I6 R) T& z: }- t% @& E
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 L7 y: I; g8 r/ H
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;7 d4 P2 x3 R Y0 F( p
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;5 m2 }4 P3 l: f4 `: w4 j
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static int acnt = 512;: ^: Q" R9 ~0 S. b: B* Z7 v- z
static int bcnt = 8;& y1 Z& Z/ g) l6 B3 F
static int ccnt = 8;7 k% N; r. V- @2 S
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module_param(acnt, int, S_IRUGO);% o; K/ x5 ^- m) z& O { V
module_param(bcnt, int, S_IRUGO);; L! K/ ^, J2 X7 D k
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