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+ O4 Q* L4 E0 L' Z3 ~! F: j2 ?7 q; p5 ^' q
/*$ \) w2 @" a/ L1 c
* edma_test.c
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*
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* brief EDMA3 Test Application+ R ^$ l( u1 v' d: X" h+ p" d
*
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* This file contains EDMA3 Test code.
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*9 L! h" _2 ]4 N; [: @
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& W7 }! S9 l% l1 ^) \% a
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 \$ z! y9 i% @) B* ?6 S" n' f- |
* TO CHANGE.
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*! B! L, `" Y F- _3 }
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 N1 J& M7 W# ^" U
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* This program is free software; you can redistribute it and/or/ a) u/ f1 C: N0 h0 b
* modify it under the terms of the GNU General Public License as. i- a2 o9 _5 s
* published by the Free Software Foundation version 2.$ \ E! i. L4 o! n2 a! r' e$ \
*$ z' y+ P5 g" a) V: U# P$ w, j
* 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
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* GNU General Public License for more details./ P5 m4 Y" E% S6 F) u
*/
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#include <linux/module.h>2 i8 w/ B2 n- |. k, |) Z6 S" ^$ {
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h># F9 c& f% _- a, D3 g% a
#include <asm/io.h> k* z E& U: D5 ?* M
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>9 A0 x$ ]+ z1 L. [8 d
#include <linux/dma-mapping.h>
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#include <mach/memory.h>- y- s8 k2 Z! I$ x7 r) x4 r
#include <mach/hardware.h>2 Z1 m. k5 F/ b+ A
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG) m0 n8 M# U! {1 h2 D3 _ z3 n
/*#define EDMA3_DEBUG*/0 }/ K2 j# v% C4 H N+ H
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)& {1 H# J" x2 i) A
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)7 \2 B. Z) h4 J P3 X
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT( Q' t3 B; l: X1 D6 @7 _% f
#endif. r$ h6 T* e/ D" J
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), F7 d4 v% \# Y x( ^6 M' C2 a+ s- x
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20& @" X4 R( U2 N+ i: R0 I+ k
#define ITCINTEN_SHIFT 218 F( g3 H$ q, b2 J; }- m6 u5 K: O
#define TCCHEN_SHIFT 227 L K, j- j/ Z/ x( P4 U
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;: O) g9 Z& e9 o$ v/ }. j! F
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);+ q3 x* D6 i" s8 v0 Z v$ c
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;, |/ y' @* s- h# q
dma_addr_t dmaphyssrc2 = 0;4 S, A4 u7 P. o/ w7 P# H" C
dma_addr_t dmaphysdest1 = 0;. W. R+ U: O) F$ ~" s7 J) `8 y" P
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;4 o7 C$ c6 l( _; i
char *dmabufsrc2 = NULL;! u$ U; B* T8 o& ]0 e- ^% W- z
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;! g$ _1 y, ~* J% [" l. a$ T
static int bcnt = 8;9 o& l8 [( w, G
static int ccnt = 8;, n: ]) P, {7 X" R! |- H& R, y7 Y5 m ^
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module_param(acnt, int, S_IRUGO);/ g: \2 y& O/ Z* C$ V) _
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