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! X9 @- W" c+ ^/ u* ?# U! l
/*; [1 u7 H# q4 }& ]! W
* edma_test.c
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*7 i. H; W( Z; r( z3 g! }
* brief EDMA3 Test Application8 o7 k( _2 M2 H7 I( j
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* This file contains EDMA3 Test code." R2 X8 |4 e1 ^- u% u. O
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- w" r+ z& z! o, R
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, ?, R5 O, Y1 ]
* TO CHANGE.$ a% y+ F: u7 x7 \ ]
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* e$ C% b/ t- V- k* ?
* This program is free software; you can redistribute it and/or" I$ A/ V$ }2 S3 z% n6 e
* modify it under the terms of the GNU General Public License as; v% `$ O2 Q5 E: Q: e% h
* published by the Free Software Foundation version 2.) Q2 N( ~0 l* F) o0 r- H- V
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 }( B% ~$ o9 I! j
* kind, whether express or implied; without even the implied warranty( I) v% a* R, n* O8 l4 @7 \
* 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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*/. H. F0 W! R1 W
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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>* X& T) o! B3 I
#include <linux/interrupt.h>
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#include <asm/io.h>& [! L" V& B1 `' f- t+ j* L- |. _
#include <linux/moduleparam.h>% ]8 Q7 p n% O5 w/ s
#include <linux/sysctl.h>. q' R2 x, \- q- I( C( ]
#include <linux/mm.h>8 T' [) z; I _: d! c
#include <linux/dma-mapping.h>* n* d9 C& Y) O1 u. p! I3 A
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#include <mach/memory.h>* \6 r3 y/ ~1 e6 P
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>- }3 V: U0 k2 m* m4 m
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/0 T" j a( I! e8 v' S+ f2 a
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 ^: W4 E5 X# U# D
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); s4 t" U7 b; V: R
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)% {1 V4 G, F$ ?
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN, F- C' U( m/ L6 \8 u
#define DMA_FN_OUT6 v& \" Y4 \+ P0 i
#endif: F/ \: D. Y* j: B9 z1 h+ p" ^. p
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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 213 V7 e# Y4 B# n7 M& x
#define TCCHEN_SHIFT 229 D8 G/ |) L+ e$ z2 ?' j* n
#define ITCCHEN_SHIFT 230 V x/ E6 t3 N- s
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;: }3 z; k0 x# v6 }# Z/ J4 r+ T
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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 Z( V& ~: m+ R6 N4 I/ }
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dma_addr_t dmaphyssrc1 = 0;, U+ L% t, v! P
dma_addr_t dmaphyssrc2 = 0;2 _2 `4 J, M2 V9 F, E5 L
dma_addr_t dmaphysdest1 = 0;6 n$ Y) y$ S* @- R9 B+ f* B; J
dma_addr_t dmaphysdest2 = 0;+ i E: {; G a
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char *dmabufsrc1 = NULL;9 m) k. `, K' D0 p$ @
char *dmabufsrc2 = NULL;1 f; b6 X! m: F! @$ @; p
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;- B. m2 Z2 }4 O. ^4 Y* w8 z& F0 w
static int ccnt = 8; M B9 `1 ^; w- s! ~7 `
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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