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' n: y; N( p$ o" {; W
/*- E% I" K4 v" _+ T" M6 F g F" Z
* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.+ B3 X4 ?8 g& I. Z
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 B2 z2 D0 q8 D+ i' H+ t+ `
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT2 O) t! Q7 M" h8 l; ]" N/ G
* TO CHANGE.6 p8 c9 v2 M* w* Q) _
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or) s+ |/ O$ k9 {
* modify it under the terms of the GNU General Public License as( D7 A* y- W; h
* published by the Free Software Foundation version 2." O# y) `) S& }: V8 g
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ x* W5 p* b3 J
* kind, whether express or implied; without even the implied warranty( ~- C5 p: @: H, f' P( Q8 }
* 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>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>/ X( U; k6 I7 d6 V z, X2 p+ ^
#include <asm/io.h>
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#include <linux/moduleparam.h>* b9 P- C2 m0 L) ?$ k# F, h
#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>
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#include <mach/hardware.h>- j. f7 Z' _5 `: ?* a A
#include <mach/irqs.h>0 s+ l. L! W& `- ~, A. W9 w+ K
#include <asm/hardware/edma.h>2 h* r" T2 [1 M1 H1 Q. X2 `2 H
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#undef EDMA3_DEBUG7 Y1 I6 @, C+ }2 e! H5 W
/*#define EDMA3_DEBUG*/5 y# @. [% o7 X- @9 {
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#ifdef EDMA3_DEBUG
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#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__)7 ^5 [. t( I3 h; {, Q
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN3 p6 B, \0 @5 C
#define DMA_FN_OUT: V. |* y) ]: g; L- x
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)1 |: L8 P6 N6 F& e, U
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23% T B# M% N- a; `# H4 W, E5 T3 Z
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;5 C7 C6 i* M7 ]2 _, @
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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); e: G, k2 K5 y
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;/ ?$ t: }) t. R7 j8 ]- A9 I8 C5 e
dma_addr_t dmaphyssrc2 = 0;5 B) B; m5 F/ |& p4 q
dma_addr_t dmaphysdest1 = 0;# p" l6 U% n! X; I6 B& |) ~& F
dma_addr_t dmaphysdest2 = 0;9 r0 G, k/ O. s: {1 }
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char *dmabufsrc1 = NULL;. l3 r) j; L1 b0 W. v
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;' L: f& [) k7 y0 b
char *dmabufdest2 = NULL;4 r' y/ M( n9 M5 a9 T* w0 }* U6 D
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static int acnt = 512;" C2 G8 t4 I' n {" i+ g) \. x3 L
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);, X7 @9 m% g: P- V
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