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
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/*- M5 T+ H' Y1 @& u8 A
* edma_test.c! N' a) W8 r, g; v V$ V, }+ L) H
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* brief EDMA3 Test Application
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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, V6 S# q2 {. @5 c) q: L! y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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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
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* modify it under the terms of the GNU General Public License as* ^; m" Z! F" [, L0 m1 @! Z0 h& c8 F
* 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 warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, n2 S$ N$ c7 I- q
* GNU General Public License for more details.( b6 R3 z0 S4 s1 s2 F. g
*/
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#include <linux/module.h>$ R. U q2 D) z
#include <linux/init.h>* l* E( X% b0 ^/ b+ u
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>0 R2 F& F7 B" K6 C; i: j+ t
#include <asm/io.h>4 ^% T1 n- E1 b% P5 U
#include <linux/moduleparam.h>4 v1 k6 U2 z" M; C2 C$ Y4 ^
#include <linux/sysctl.h>
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#include <linux/mm.h>: z% B0 B( F% a9 b( ]7 i- C$ ~
#include <linux/dma-mapping.h> Z! R; c6 ?) j3 N+ c0 U5 j9 g
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#include <mach/memory.h>4 O3 a1 T0 B$ v3 c+ A9 K+ U1 n
#include <mach/hardware.h>$ ~8 ]! \+ ~. s" Z1 c
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>8 W) h! {+ Q/ A/ U; x- c
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#undef EDMA3_DEBUG' m1 |; z! D! Z+ L' }
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG+ g4 d! K- J+ U7 K
#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else8 D1 o6 e [) d" z9 ]& \, G# w, }& Y
#define DMA_PRINTK( x... )) D( M% [) X3 x8 }+ \- P
#define DMA_FN_IN
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#define DMA_FN_OUT& P; |8 f+ l( W6 a* `
#endif% ^/ H# V+ W6 u7 g* _; c6 _/ i
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ t0 g* I# ~/ M& u+ U7 q5 t
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 204 Z9 O# Q8 H' T4 f
#define ITCINTEN_SHIFT 214 J7 k1 }4 j0 h8 P
#define TCCHEN_SHIFT 22$ N: U( H) H, @# E
#define ITCCHEN_SHIFT 23# [! i2 L+ K+ u% D, e3 E! T$ I2 R
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static volatile int irqraised1 = 0;
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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);
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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;
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dma_addr_t dmaphyssrc2 = 0;2 k6 K* L& ^4 U- P4 |$ ?
dma_addr_t dmaphysdest1 = 0;" t8 R8 [8 a' O4 N6 n# ?
dma_addr_t dmaphysdest2 = 0;, K( h& C6 z" y6 \3 u
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char *dmabufsrc1 = NULL;6 P8 O! l) N, b" V9 t
char *dmabufsrc2 = NULL;: {, f9 U( l' y3 D( Z
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;0 z2 W2 x) d( [& ^
static int bcnt = 8;. f6 P3 f Q0 s
static int ccnt = 8;; \! l! s B6 f9 Y' b
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);0 Q- H; v, [& U
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