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 application7 w0 [5 ]: ^) y2 x, W P) Y
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application9 E- u8 \/ u" Z5 G8 U+ e# w
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) l6 C! L. F9 ?6 n
* TO CHANGE.
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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/or8 ]: P! X5 `4 c0 d% n- ~, n
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.0 m2 Y. L# t$ ~, |2 o1 }
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any" f6 \, G6 E' ~$ t' g
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.: ?" `6 w$ a' V& S* h
*/
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#include <linux/module.h>
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#include <linux/init.h>, c' y* a& }" U
#include <linux/errno.h># p" R. b4 E, z( C' R) p9 i
#include <linux/types.h># _- f7 F6 L4 @% K ~
#include <linux/interrupt.h>0 @9 [7 O# m8 F3 e
#include <asm/io.h>) j: p+ ^) p+ x% `& `& w# o; Z' m: C, I' ~
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>, C: o* q" ` |4 Z5 O
#include <linux/dma-mapping.h>& X3 @- B, K, t
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#include <mach/memory.h>8 ?6 m$ m; a, r" X" u& a& e& @
#include <mach/hardware.h>! f# H, l. F2 I* L, u, T
#include <mach/irqs.h>, L, M2 I R& S( L4 d* m
#include <asm/hardware/edma.h>3 D* S! `* }* B9 J0 l
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#undef EDMA3_DEBUG1 X, n6 h: {/ Z# ~1 H
/*#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)& [: s/ r1 q) s) C4 R4 z
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)' F5 A% [+ q% _5 Z% i3 f/ p T
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__); ^- m3 o/ I& R: R8 ]4 A& N7 u
#else
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#define DMA_PRINTK( x... )+ l2 I) N5 E) m( P2 V. l
#define DMA_FN_IN4 o) d' _9 r. F5 N
#define DMA_FN_OUT) s6 U& O( |. h: ~
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)/ [! {( d. V) ?0 `! _9 }( Q1 t8 ^( x
#define STATIC_SHIFT 3+ [# I5 }* s$ l
#define TCINTEN_SHIFT 20; t8 K$ [1 I4 R3 A+ s; i+ @. ]
#define ITCINTEN_SHIFT 21! H6 ?0 s7 B' }: U% P* M/ C
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23. Q( k* Y$ V5 o4 R3 v. _' ^! X
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static volatile int irqraised1 = 0;$ h! N# A6 ]% s. E% C; G
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);9 c: `: a) @" B8 O6 k- o+ R
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ R/ ^7 a4 @: N; j* i% X- ?5 H
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; |( n9 _1 k/ T6 D# x
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;; @* q+ V. \( ^* r
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;$ {) k; i, U8 J1 i; _' [8 U
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char *dmabufsrc1 = NULL;1 s( ?* F4 u+ H, M, b; A( e# m A. g
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;, `. z0 J; b- R6 @5 ^4 W& ^
char *dmabufdest2 = NULL;/ y3 P/ d9 W6 E, K
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static int acnt = 512;
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static int bcnt = 8;9 C; g' Z2 p% L; f1 G1 R# O
static int ccnt = 8;$ g7 X( f; Y t( o4 L* v& K
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module_param(acnt, int, S_IRUGO);2 X O0 c( G% w4 v4 u5 A3 }
module_param(bcnt, int, S_IRUGO);2 F: P. K: q9 e' b4 t
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