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 R E' [" C' c& j. O T
* edma_test.c
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*- u9 V9 F, r) Z6 n8 Q7 d5 E C
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.& H7 Q0 r0 b" S! T0 l# S5 a, I# Q
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE6 |: K' C: `5 N/ f* }& h
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) c; |: ~9 z* t4 z( ?
* TO CHANGE.. m$ q4 a }& A' J* W
*
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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
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* published by the Free Software Foundation version 2.- g- i/ ~' _: A
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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# Z1 X( ]4 P7 ~& W2 W
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the' Z. R4 _) f! m8 `0 v8 M+ _
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h> v7 p# H2 P) p( r2 g) B1 I
#include <linux/errno.h>
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#include <linux/types.h>/ ~5 k7 V; j. y: Q* ?/ q! W6 K
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>2 w/ Q/ K, R9 ^5 |/ [
#include <linux/dma-mapping.h>3 x1 B" |5 G2 x! t5 o% G/ w) U
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#include <mach/memory.h># X5 E3 q% r: `! F! F3 K8 `/ n& s
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.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)
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#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__)6 n, [- t! J- s/ C# p! a' w
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN/ `8 v, c/ P+ t5 t3 m, m4 @: B# L
#define DMA_FN_OUT
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#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& i, E+ h+ l* G& d8 ^/ a( m3 {: D
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22) ?5 v+ K$ o! G, G, i* N
#define ITCCHEN_SHIFT 23* n& s: d0 D& H# {
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static volatile int irqraised1 = 0;2 l/ `. i' C6 t
static volatile int irqraised2 = 0;: C9 o2 |& Z# ~7 V( }
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 I! K5 x6 g; |: Q; \7 e
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);7 t% y' {: b1 Q; F
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dma_addr_t dmaphyssrc1 = 0;) K9 r% r3 i% T7 M0 [+ w, a
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;# s: O X) G% @( t0 t9 X' X
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char *dmabufsrc1 = NULL;' b5 M7 w; |; r1 c# o/ y- k
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;% |3 h/ ~7 Q, U9 g, N2 [: K
char *dmabufdest2 = NULL;
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static int acnt = 512;! N6 }: b7 s9 r/ k$ m; `
static int bcnt = 8;
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static int ccnt = 8;- m$ z/ C( X, e- S! X- v, s s
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module_param(acnt, int, S_IRUGO);& Y7 ~9 W) u& D* ]
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