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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/*9 F& E9 `# }& f5 ^4 z2 m* E
* edma_test.c2 f; t) L& f! N) P
*
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* brief EDMA3 Test Application) f& p' B7 Y" }8 Z$ V4 @
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* This file contains EDMA3 Test code.( r" ]. i+ i" H a, G9 m
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE. u$ J: }. X. W. p% w% |
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.0 p+ @! h) |) `
*
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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. P0 o5 x0 G' V& `# X3 \: g8 Q l3 }
* 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 any
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* kind, whether express or implied; without even the implied warranty) u H2 v' F5 U4 l/ ?9 \) W
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>) i" c- d7 W8 v% N' U
#include <linux/init.h>
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#include <linux/errno.h># T- R2 q1 x8 C6 h1 n
#include <linux/types.h>6 v b" C3 L9 A
#include <linux/interrupt.h>
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#include <asm/io.h>5 H- n H" d% I$ W% R( f3 x
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>8 e; c7 r5 n) [2 ~. h
#include <linux/mm.h>
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#include <linux/dma-mapping.h>, p* W6 Q! i4 }
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>; [7 E' L( `7 @" W' ]& |
#include <asm/hardware/edma.h>- _. n/ K) |: a3 ^% H
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), Q T7 x- Q9 Q1 N! [) p) z8 ~$ k
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)6 K; E9 d8 z& ^# Q
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else$ o3 e; U7 [5 |! O7 x% b; e
#define DMA_PRINTK( x... ) n5 |6 n# y4 F0 P5 G9 P$ B
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif+ L5 \3 F3 }2 s% m J
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)8 `( [. Y6 X' ?9 Y2 c& }
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 204 D% Z) ~1 F+ E/ ~# F; }$ V( ^2 @# c7 Q
#define ITCINTEN_SHIFT 21* d# d1 H2 S4 \ w, w; U
#define TCCHEN_SHIFT 224 j/ _8 k& q. F
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;1 J! j1 A5 z& P" f1 Z# G- ~, g W. O
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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;0 [& P5 ^7 }. }% r1 \- i% d
dma_addr_t dmaphyssrc2 = 0;% ]2 V% @ G7 T% k) j7 L( B
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;3 |7 |6 [5 E2 b1 Y3 h) ~7 N4 f
char *dmabufsrc2 = NULL;) }: K1 h- w: h* R
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;. H3 t1 {, e1 I. |( {. u, Y
static int bcnt = 8;: w5 ~0 d) }3 A' R' J1 Q- g; w8 l- I
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);* r7 N0 I8 E1 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