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! z0 Z) j% e, X5 T; u
/** ^1 v% M3 |6 T& H
* edma_test.c( |* o' @" ^1 p
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.' N0 C8 k3 q' R8 C& L0 }8 l' T6 B- `
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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 SUBJECT3 `# m' f5 m' G9 _& }$ q
* TO CHANGE.- }% m! u& ^& k0 U! @
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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
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* modify it under the terms of the GNU General Public License as) n: U) \- f& O# \# r
* published by the Free Software Foundation version 2.9 ~" l* [: N C/ w- }! @0 t
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 @9 K! t. e$ c) E8 I
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.) _! r" R) d! K; @! L
*/
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#include <linux/module.h>
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#include <linux/init.h>; Z) ?6 `* `' B/ t: Z; h7 K
#include <linux/errno.h>3 M" V! }5 \5 R3 B9 L( i
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>+ k4 B1 ]; V- e) h4 B7 R1 P
#include <linux/moduleparam.h>
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#include <linux/sysctl.h> B1 g3 u* N) k. S2 v9 y& e
#include <linux/mm.h>
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#include <linux/dma-mapping.h>8 O# d" c2 L. C! G( G' X
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#include <mach/memory.h>0 t$ A' t8 t i- q
#include <mach/hardware.h>. Z7 ~. E2 w1 k% P* ]! O
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>* w! T9 h! F e7 X: q# z
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#undef EDMA3_DEBUG( `2 E$ _: Y$ l9 P* `$ {
/*#define EDMA3_DEBUG*// o" d; w% g" @3 V+ K4 Y
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)' B( h7 @) J9 k5 v r% \/ A8 a( R
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ Y( W8 d4 I. m, ]" G& M% I- H
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)0 C) {- ~, l8 _& J
#else
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#define DMA_PRINTK( x... )+ w- t, X. I$ [
#define DMA_FN_IN. ~+ `0 q' Z& P- ]! ~. }
#define DMA_FN_OUT4 x3 v9 t+ S$ S* p8 K: O& Z; m
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20" q/ d# Q) `' @* }+ W4 _
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;6 J! h& e; x% }9 [
static volatile int irqraised2 = 0;2 d5 }8 y" S# C
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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);6 }# {' S7 z9 v( @
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;7 ]/ R; j# B/ G5 W8 B
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char *dmabufsrc1 = NULL;; k+ r9 ?, H* g9 A
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;$ K/ Z" L! g+ L% ]
char *dmabufdest2 = NULL;% q& ^8 [; N/ J) z
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static int acnt = 512;9 Q2 a* K. @! e9 ^8 R
static int bcnt = 8;0 j, s( G4 v" u* @3 A' P
static int ccnt = 8;! o9 f5 I. P5 u' K: w. r1 ^
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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