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 application9 |: {0 o) y6 ]' b/ K
/*) ]! Y, V+ Z& U, s8 C2 a( U" [
* edma_test.c$ I0 f; z/ y% Q# z9 n0 J
*
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* brief EDMA3 Test Application7 f% u, j% o+ j$ ]- h8 u
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ o w5 a% l$ ?. h" Y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) I5 P5 M4 f' p8 u* r
* TO CHANGE." e& O. W- W) j) c
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// X) B J1 L# F) W7 M: g4 k
*
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* This program is free software; you can redistribute it and/or8 h0 y1 W6 Q/ x& I& Q& ^6 i2 Z; a
* modify it under the terms of the GNU General Public License as# s% r$ U- N/ a$ |1 o+ M
* published by the Free Software Foundation version 2.
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*
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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 warranty3 t3 |. f$ h0 H$ t$ i% m f* c
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the3 M$ W M& b$ S" N% l1 c
* GNU General Public License for more details.
# o- @. D: v- V
*/8 {& M9 V% A9 U5 p: J9 f- r
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#include <linux/module.h>- h+ y- C/ Q y- M# u; ]: m
#include <linux/init.h>0 S4 y8 ?0 I: p# S" F/ G
#include <linux/errno.h># M! t- t# H0 L/ H; y# U2 S0 j( S
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>' Q0 C7 T7 @/ u7 K! n
#include <linux/moduleparam.h>% d+ e/ O3 I4 e4 n! w7 X% }! e
#include <linux/sysctl.h>4 g: d8 _: v/ g6 m5 Y$ _% T
#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>1 A! n- E0 O/ ~7 Z2 l
#include <mach/irqs.h># Y& O) Q X: o
#include <asm/hardware/edma.h>6 k" y4 f" Y0 q) y0 j" h
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG3 ]1 B. ^1 Z& g; O
#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__)9 B4 S0 V9 X- b' W6 E
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else% |) d5 D& L( N# O6 Z
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)3 s% \+ E8 l( D/ `7 s- i: n0 Z0 m1 u
#define STATIC_SHIFT 3+ r; |2 y% M" c+ c& s/ R
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22, E1 h' l" y$ s# I
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;# W% d3 d' C5 e4 U. V# j+ t
static volatile int irqraised2 = 0;! V5 E' o9 v5 b( i+ s
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 B) J$ }0 s3 X Z! F; B
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: m/ ?+ g4 Q" r& e; m7 s
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" V: Y5 `1 {% c3 I- J- h3 A# M- A
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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;) y. J* d' Z' m1 t' n/ e. |) y5 L" b
dma_addr_t dmaphysdest2 = 0;7 }" r4 a/ c* c% M$ N
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char *dmabufsrc1 = NULL;( c; r( h8 O. t- e+ D4 S+ L& n' B
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;- o) A3 p0 D' c( e- b0 B/ S8 N4 r
char *dmabufdest2 = NULL;& [# \( g R | ]8 M; I, C
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static int acnt = 512;, I, \$ G( S, k# Z, a+ M# a
static int bcnt = 8;2 {1 v* z+ e) U# u
static int ccnt = 8;- t$ g& r7 M4 z
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module_param(acnt, int, S_IRUGO);* X9 d1 i, o( x$ y
module_param(bcnt, int, S_IRUGO);8 m7 U% D+ r) ~9 u! w4 O
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