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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/*5 B p7 F2 |2 J( s P; m
* edma_test.c
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*! _7 q) H6 O: c& Y' M/ J
* brief EDMA3 Test Application, Q* T- J0 d& {! Z. m
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* This file contains EDMA3 Test code.0 P0 U8 z; }8 D6 |7 ~% e
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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) p6 {. D* R: I2 K# m9 s2 p
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 f) D! C, t8 Y3 i, w( e( m O. F
*
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* This program is free software; you can redistribute it and/or4 E- V- g: U4 w7 A
* modify it under the terms of the GNU General Public License as7 e# y/ t! t7 @3 T5 _
* 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 any3 Z5 k/ y" J; @3 c# Q' B7 V
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 ]/ y' s5 D! f$ u! `4 S
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>7 c0 z$ {5 e3 s
#include <linux/types.h>9 A% R5 q y0 F* J. G" g
#include <linux/interrupt.h>
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#include <asm/io.h>$ n; \( [/ W8 ^! o9 v3 i" W0 S
#include <linux/moduleparam.h>) j2 q; @- f |, D4 N
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>& L% E, k! t" r& `4 U* i, a- q3 D
#include <mach/hardware.h>' K2 x3 w H. O- c& `. s2 c
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>+ z. Y; v3 e- o
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#undef EDMA3_DEBUG/ R* g; L8 E$ L: r, Q
/*#define EDMA3_DEBUG*/9 u( o* D1 O6 O- m
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#ifdef EDMA3_DEBUG' z$ m: _: c9 l! k) ]4 n
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) a, N' z% }7 N
#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__)
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#else% s8 L" Y* S. {! Y1 g' m
#define DMA_PRINTK( x... )' Z, X* n$ Q# u$ C' w$ F1 f
#define DMA_FN_IN" A" y% G/ s! ] r) m
#define DMA_FN_OUT( ]5 \5 D( l) g, a% |
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); w/ Z5 i* ~2 U: R: d# d
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20 d" K X* d' q1 I' Q6 _% S
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 231 i6 e# `$ H- L3 ]
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;+ M9 P5 P8 S7 c
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 q2 [6 q9 Y, t! H6 d: L" H
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( a: h4 [; }2 ]% g4 @* c j2 v/ [- K
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;1 p. c: \- J0 E" r
dma_addr_t dmaphysdest1 = 0;% ?, M/ m1 Y4 y) g
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;; E7 r# x, s9 @( T) ], E3 M9 @. q
char *dmabufdest1 = NULL;' r5 _! S+ F3 m! Q
char *dmabufdest2 = NULL;1 ^& _, e/ q4 L
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static int acnt = 512;9 `: d& W- n1 }; p! n c& `* {. }
static int bcnt = 8;
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static int ccnt = 8;# ~# {+ F9 X* F7 j( y* x) G
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module_param(acnt, int, S_IRUGO);' a& Z A4 ?/ q) @5 x
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