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. U2 x% \# Q4 }. G0 Y+ N
/*: J7 Q" @+ Q4 r7 C: l% P
* edma_test.c5 \ }7 ?1 ~8 q& ^- ?/ k5 W
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* brief EDMA3 Test Application4 d0 S F* U( |- Q6 P
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* This file contains EDMA3 Test code.( C" U, @8 ]6 ]! n: n" n
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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 SUBJECT0 h1 o x R) L. l |- X6 k9 y) J
* TO CHANGE.: j8 {# }; h5 M6 Z# u
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or- `0 p, Q5 Y. Q0 s
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.! |7 Y5 X! U6 u& R8 \7 U, j
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) P @6 S2 g% O' j) X
* GNU General Public License for more details.
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*/8 p2 b- j. j% V' x) y
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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>8 [5 z$ |9 \ v; a4 Z
#include <linux/interrupt.h>9 X* ]% H0 U1 ?- R( Q
#include <asm/io.h>2 x% }# [' p6 z6 i s; y3 u' `
#include <linux/moduleparam.h>: L% M. L) W) X
#include <linux/sysctl.h>: D: m- t" B! P, Z/ i
#include <linux/mm.h>
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#include <linux/dma-mapping.h>7 H% a' ~& x" ?0 J+ E: c: C
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#include <mach/memory.h>- ~5 J. |0 i4 e: a; N* X1 d4 \- X7 N
#include <mach/hardware.h>; a4 l4 ~7 O g/ A* |
#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). b" y8 P$ O2 ^9 i2 D9 t( `
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 Z9 W8 A9 {, i+ K( I/ e
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else' p4 c/ ~, H! c1 Q$ D
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT# h! C) u* {5 \, }5 \
#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
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#define ITCINTEN_SHIFT 21( I5 e! C6 y8 u
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23: Q- M4 v) E+ U+ V) w. W0 K
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static volatile int irqraised1 = 0;9 \2 Q2 I5 o: R- O( p% W
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);" c1 t3 V6 S# t! a
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% G+ o* L8 H! C3 E% r
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dma_addr_t dmaphyssrc1 = 0;% S3 _" R H& F$ x- r6 b
dma_addr_t dmaphyssrc2 = 0;$ c7 b6 \! g; X- |" W
dma_addr_t dmaphysdest1 = 0;9 e) d1 e+ o* f# z, U
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;4 e* o! s8 u1 o4 t$ B
char *dmabufdest1 = NULL;6 Z/ Q9 L* Q# }$ q' B
char *dmabufdest2 = NULL;! x$ s) r* o8 O1 x
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static int acnt = 512;! v' }) J/ {" c2 \. N: o
static int bcnt = 8;+ S: ]( l6 Q( }/ V( O' z
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);6 E3 T' D3 a3 f
module_param(bcnt, int, S_IRUGO);7 m' T9 M9 W" H) ]
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