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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/*1 a8 m) T& G8 n% t4 T) O
* edma_test.c- ]/ Z* V8 U" I5 A+ k4 `
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.* J* O: s5 ]2 |: A; N
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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.& r$ A* `: u' `3 a' c
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% g$ u, v. H4 F- h9 h& t
*
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* This program is free software; you can redistribute it and/or1 q' A" R, G5 z! M; `
* modify it under the terms of the GNU General Public License as9 v. R L7 U7 m" L3 L" f
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any( }1 X5 Z- a- K
* kind, whether express or implied; without even the implied warranty; \0 i3 K/ A( V. [ p
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ {5 z* o3 c. Q
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>: B' h) f9 j4 `5 A
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h># y8 T; K5 F2 u' ~- \
#include <linux/sysctl.h>
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#include <linux/mm.h>4 y4 @( H6 l: e: P$ u; V
#include <linux/dma-mapping.h>
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#include <mach/memory.h>! W, R0 M2 \! R% f1 y0 _" ?
#include <mach/hardware.h>8 B1 {! {. \- A# d# z+ Q3 I
#include <mach/irqs.h>+ V: y/ Q( ~& G$ G: S4 E: N
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/ {9 X; Q# N7 i
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#ifdef EDMA3_DEBUG' B& \' H5 y7 w, Y$ [! K- i
#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__). S" `3 [7 z' v' }8 n* j; ]
#else
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#define DMA_PRINTK( x... )8 d7 h0 K& S4 f1 `+ Y7 T6 j y
#define DMA_FN_IN. c/ F/ A" h0 W; J3 F; H% n
#define DMA_FN_OUT* ?& J0 {! t. H: _1 W5 M" P
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)5 ] j/ T" g) R6 l+ [$ `
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20' o& e+ V: e @4 K9 S( p: i
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22* V) P1 |4 ~3 c: I! o3 I) {: `
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;( j# ]9 b, Q$ F
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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);, a- \8 r) q8 Z2 h+ y0 r
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ A4 ~5 @7 Y# q2 n
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dma_addr_t dmaphyssrc1 = 0;! c/ E9 Y% q g0 @+ S, ]
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;& B x' j2 N$ j" |4 }$ w. X
dma_addr_t dmaphysdest2 = 0;4 o4 w L, O: Z. s# |
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char *dmabufsrc1 = NULL; L9 u' F) b, t ^# O
char *dmabufsrc2 = NULL;5 k6 c6 p/ w# _4 K
char *dmabufdest1 = NULL;. i1 R& L6 M2 s2 _8 E9 d
char *dmabufdest2 = NULL;- `& v$ h( a, O; p
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static int acnt = 512;# I7 P( h9 T W+ v% ^/ c7 E
static int bcnt = 8;6 B: Y4 m- L) n! ?3 E4 h6 p
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);7 ~0 @, r# A2 T0 t
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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