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- Z+ H. M" C" a! ^" D
/*
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* edma_test.c: r' \+ d3 o( ~% f
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.( z2 p$ U/ j$ y2 f: `
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE* U& J* L1 O1 J( W* d2 ]) C
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.+ v+ K% R6 I l2 S. _: X4 _
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 [9 G* I3 t7 ~) B
*
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* This program is free software; you can redistribute it and/or1 j: c4 Y, L- V, I- Z( ]4 U- ^+ s
* modify it under the terms of the GNU General Public License as+ w0 ?0 h9 {/ I# p7 M
* 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 any4 w* X. B+ a; I. B
* kind, whether express or implied; without even the implied warranty& W' S% F8 y% c. J, x2 v( o$ @
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ R) w) d E( M: J' P
* GNU General Public License for more details.) Z7 R% a6 g4 U; v5 }5 L
*/
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#include <linux/module.h>7 P9 \& J6 n# x7 J1 g' V
#include <linux/init.h>) z; M' U; s* M
#include <linux/errno.h>
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#include <linux/types.h>, X: B* Z$ z g+ X0 t
#include <linux/interrupt.h>0 b" F4 a' E C+ g; {5 r2 o
#include <asm/io.h>+ r- l" |8 {/ W; u. c: ~* g* X% D% K+ T
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>$ s* \4 N3 N% Y0 E% z( P$ s
#include <linux/dma-mapping.h>
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#include <mach/memory.h>) l' Z" Z0 E+ p& k; q
#include <mach/hardware.h>. [" X% N$ A. Y* J! h7 I' C
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG9 W5 x- i: k4 P2 Z9 q# Q
/*#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)$ k# X6 t: K0 i7 J) Q
#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__)4 \& v% |/ g+ V: G
#else) O# j8 ?5 b0 k `) q
#define DMA_PRINTK( x... )2 S, W5 R9 O1 P
#define DMA_FN_IN
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#define DMA_FN_OUT) q8 X7 ~- e1 I* w) ?7 I7 H& p
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3+ t4 e ], Z7 W0 X( o; `
#define TCINTEN_SHIFT 207 T, g, v, I( l, J; m6 P* [# X" Q& b
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22+ G) W ] m3 b1 @* @
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* E7 W. R; L$ `/ W4 C" D" x/ i4 U
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 }* X" _: U0 F" o- Q
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dma_addr_t dmaphyssrc1 = 0;- ^% N8 E# x! U/ l
dma_addr_t dmaphyssrc2 = 0;7 C z9 E6 b4 r$ j8 k$ m
dma_addr_t dmaphysdest1 = 0;# v9 a6 u, X( u5 }; e1 c0 Y- l5 l
dma_addr_t dmaphysdest2 = 0;
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# {7 T) u8 I% I* D7 E2 ]
char *dmabufsrc1 = NULL;8 i' V8 h8 y9 S/ R5 O
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;; T* ?# \7 X4 e+ I7 n. q# ?
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;" T! \; L% C' l$ G) Q( t+ R- v
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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