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 G1 L* J6 Z5 a) T2 }, g
/*
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* edma_test.c
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* brief EDMA3 Test Application7 B' e6 u G* y q
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* This file contains EDMA3 Test code.0 W$ X% J; c1 Z! ^5 e% U" c1 v
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE( l( y6 P/ X* _- g1 J t
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT* O! w$ K6 ~- x7 f: ]8 V, n. m6 _6 J
* TO CHANGE.% p( ^4 i: B2 f+ \+ H. a
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 h+ X/ Z6 x# [6 P/ i1 k
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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.+ [; {& h) K, K( h. i$ O9 J) c8 T
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 w3 W9 v1 ~5 V$ p" }+ p; I* p: `
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ J% ^; Q. y3 b# j- S+ I" ?* e
* GNU General Public License for more details.
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#include <linux/module.h># `+ g; k+ X7 P7 B
#include <linux/init.h>4 H6 V# Y7 b7 A7 G0 i
#include <linux/errno.h>9 w, N- `% U, K
#include <linux/types.h>4 o u% W3 ]9 z% L' K
#include <linux/interrupt.h>9 z- F R% s* [
#include <asm/io.h>
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#include <linux/moduleparam.h>" ?! {& v6 o7 u, Y9 |1 p; m/ v- d
#include <linux/sysctl.h>0 c, n: x1 S. |4 T. H
#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>$ e) K; N0 [% L b+ G0 D6 u( q& F- ?
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>* {: F9 {/ A1 J/ S0 W5 d- Q
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#undef EDMA3_DEBUG. r7 q& }( }$ u" t% k& A
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG1 P7 t: N3 W+ D8 \
#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__)) L z/ F k4 a7 i9 B
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)0 R9 x$ q8 O/ I5 c& X* x
#else
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#define DMA_PRINTK( x... )2 f( p, b( [, v! B8 D4 e& V9 t, b
#define DMA_FN_IN
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#define DMA_FN_OUT, w" ?$ b4 N% W1 F% q4 S' X
#endif6 C5 V. X0 g W5 a4 A1 Z7 \
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)' N* a- k6 {4 S; ]/ ~7 a: `! T
#define STATIC_SHIFT 3. V# a) a$ [: z! X
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21: u0 @2 x: |3 r
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 238 m+ n6 j* k$ k! I$ J
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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# O6 d8 t. z, o; j8 y) V" w/ J
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;; e( @. l U* h( v8 p; z3 B% h; M
dma_addr_t dmaphyssrc2 = 0;0 p' ]1 T, ]! ^+ L& k$ j7 z
dma_addr_t dmaphysdest1 = 0;! d- b) P8 k/ l$ t. E, n# \
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;; R' ]7 ~: r) t) q+ ]* u/ r
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;3 J7 o, |) @0 j' D3 |
char *dmabufdest2 = NULL;$ S7 x V& y. D
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static int acnt = 512;
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static int bcnt = 8;) s6 e2 X7 [. C5 ^" |' ~
static int ccnt = 8;
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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