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: g0 ]: V6 F! z- c4 J8 E5 R1 s
/*% p) C6 |$ P5 r8 x. t
* edma_test.c' ?' c1 p0 }: B. j+ M U
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* brief EDMA3 Test Application0 A$ V. s' s' F h3 n+ B4 k$ n
*
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* This file contains EDMA3 Test code.: j$ o/ R$ \$ Q1 E2 z
*
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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.7 U/ d6 C k: E: }
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 s/ Y& _/ B: p( | Q; d; ]
*
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* This program is free software; you can redistribute it and/or! k$ T7 B+ V% i! w* y- A
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.1 f. O* {" H2 [
*! [* P& ]* Z! E1 s" S. q( c
* 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.1 a: S5 h5 {) W7 c6 H
*/
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#include <linux/module.h>9 }# B" c z3 t o( U
#include <linux/init.h>) l4 a# H% m/ D% ?, ]# f: G: e
#include <linux/errno.h>( P" }0 g8 d; Z/ r' L
#include <linux/types.h>. |+ w% z" }3 e+ Y# f# W. ^
#include <linux/interrupt.h>
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#include <asm/io.h>/ L K9 u" l- G
#include <linux/moduleparam.h>- y. @ d3 P% T# G- b
#include <linux/sysctl.h>% S2 c% h# Q6 ?: k. Z( C
#include <linux/mm.h>8 s2 p) a+ ^9 b( K2 a8 x9 ]
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>! c0 P) e- h" B* U. x
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>- B4 Y; h" q# }( A& @& ^) u% R
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#undef EDMA3_DEBUG" }8 R$ T6 P7 A/ d; [9 w' Z
/*#define EDMA3_DEBUG*/& J6 L0 M( Z/ u8 j( {; W3 |
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! x9 u6 D2 k2 t) p
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)3 F3 N8 k" y% w5 j U! H( N
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else4 I$ r& {4 X7 E o& F* T
#define DMA_PRINTK( x... )0 w$ \1 v6 A8 f; E. E
#define DMA_FN_IN/ P8 N6 X. X) W8 R" R+ u
#define DMA_FN_OUT
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#endif1 X6 `( J s& m8 G0 X! p5 E
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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* q/ v5 ^7 J7 X! D1 R G8 @
#define ITCINTEN_SHIFT 21. T) _8 m) J2 `8 |- y+ ^
#define TCCHEN_SHIFT 22$ u* N' S, D* a# C8 i) x4 o
#define ITCCHEN_SHIFT 23; {! W; i5 @' s( ^& H& G
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static volatile int irqraised1 = 0;# g6 \0 k5 k5 f1 E" A5 `
static volatile int irqraised2 = 0;7 W7 _+ Q) t# s5 G4 x
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); l- z" s- B' Y* @2 ] u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 H) D" D6 N) @7 u* Q, |
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ g' f9 }( S" ?5 ]3 t+ Z
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dma_addr_t dmaphyssrc1 = 0;/ \; r6 V# i/ e0 f; d+ P
dma_addr_t dmaphyssrc2 = 0;, Y4 g$ L p& h+ U9 K3 ]
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;: |6 q) _4 @! w+ J2 a: q$ Y: ?4 N
char *dmabufsrc2 = NULL;2 A) ~3 I, r Y! P2 w5 _% ~! z
char *dmabufdest1 = NULL;8 Z" u; W$ Z- V. e
char *dmabufdest2 = NULL;
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static int acnt = 512;3 a. A/ s) t: A. O4 F
static int bcnt = 8;5 P; R {# q8 h$ h3 q# J/ b
static int ccnt = 8;3 F4 @# ^6 ^6 L$ R' n
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module_param(acnt, int, S_IRUGO);
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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