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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/*
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* edma_test.c
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* brief EDMA3 Test Application, p8 |5 O! d3 G3 p8 A. 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 BE1 I. v1 j6 ]1 W$ A* J
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
* TO CHANGE.3 D( ]5 i. N# {6 I" U
*
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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/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2./ F% L7 j+ Z5 r
*
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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$ a* D0 V w5 e
* GNU General Public License for more details.$ H) b7 ~6 _. B
*/
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#include <linux/module.h>! j" ?% v) G' e. w
#include <linux/init.h>
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#include <linux/errno.h>/ g7 o" S6 W+ n3 S8 S
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>7 I+ a5 W: G0 c# Q6 f
#include <linux/sysctl.h>
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#include <linux/mm.h>) P6 i8 {! b1 B# u8 C6 ~8 C
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>+ H- O9 v2 F. E8 U) q' f2 }9 z) I
#include <mach/irqs.h>
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#include <asm/hardware/edma.h># q5 Y( T |0 S1 X8 y$ ]
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/7 ], d" ^; c( _
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) B6 X4 O) K7 [
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)7 H- F0 c; i$ v- D
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)/ F+ @8 d; C; u: K6 y; u/ P/ Z
#else
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#define DMA_PRINTK( x... ): m, w% O* A' F% m1 Z; D V, y3 f6 v
#define DMA_FN_IN" o% i% {1 V$ Y# e
#define DMA_FN_OUT3 I3 I- e: \/ h$ w9 j0 z
#endif5 u- o5 d1 X1 p% Q. S/ G8 ]
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3/ m# I! }8 P5 Z- y: ?
#define TCINTEN_SHIFT 209 w2 p- _, q3 b
#define ITCINTEN_SHIFT 213 h E* B, Y f& b
#define TCCHEN_SHIFT 22& m9 q6 i( f9 n) J& g1 C- T
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;* g3 x6 ]; x1 y+ s
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);2 F" v2 u5 U, q( X7 @" C" Q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 U' P* Q0 n2 f3 O7 I$ b% R* S2 R
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); s; j6 V- i e y1 w( g
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;3 }8 p( y5 I1 V. k! b ?! }
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;; G) W/ D7 l; e6 t6 {) z1 E" ~: ^' J
char *dmabufsrc2 = NULL;: s. _+ @! }( Y! T( h @9 V
char *dmabufdest1 = NULL;, P) {" O% k) G( [# ~
char *dmabufdest2 = NULL;5 }$ F$ H+ A- T
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);' O q0 @! Z8 L# i3 ^! D
module_param(bcnt, int, S_IRUGO);: y" i, _+ o$ A
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