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* x( X9 F$ [* }; q" G, M9 E' R/ J" _
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* edma_test.c
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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& W5 _! V4 p5 r9 O# F) |* y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.+ m0 u: L) y$ j+ v& I$ ^
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: y0 P+ e, L% B$ M9 \- {5 N
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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 as3 }8 }% r8 M. b
* published by the Free Software Foundation version 2.( P: K. @; A+ n/ a* A% Y
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any% s, `9 K- d( u+ T/ j2 k- x
* 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.3 N/ W& c9 s8 L9 @' ^& j
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#include <linux/module.h>
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#include <linux/init.h>! m7 M( N5 b) Y$ A
#include <linux/errno.h>3 ?: w6 F) u ^6 z; J
#include <linux/types.h>5 s. z& h3 h0 X/ {9 \( Z M& S
#include <linux/interrupt.h>5 G. A" P+ x0 v G/ t7 v: c
#include <asm/io.h>4 B1 }% m: s$ D" G* s, T
#include <linux/moduleparam.h>1 Q# [/ s4 K; ]; w4 r/ U
#include <linux/sysctl.h>7 Y- G9 |3 F3 ^) Z' U
#include <linux/mm.h>
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#include <linux/dma-mapping.h>" z1 g* }1 {2 Q/ T* A) l8 |
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#include <mach/memory.h>9 e; i" j0 @+ n; a& u5 t$ }5 k
#include <mach/hardware.h>5 `" u9 p8 E! z v/ F
#include <mach/irqs.h>) b+ r2 M% b+ e# A ]' O& A
#include <asm/hardware/edma.h>% M% A7 A6 F! Q5 O7 I6 F
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/, [1 s1 z8 t% S% X! y
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#ifdef EDMA3_DEBUG+ V! Y% q/ ~7 n4 _- |1 p
#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__)3 Q; I5 G" Z# [$ g
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)& V( o4 e6 |: h' ~4 H; F+ F0 F
#else
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#define DMA_PRINTK( x... )2 T2 {2 ]% j! t+ i
#define DMA_FN_IN) V5 \/ j: [7 ~3 @, D* w
#define DMA_FN_OUT5 V! R% m* M1 f
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 `) {$ M6 t6 x; \% u0 c
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21 m6 k& k3 o3 E7 X+ N( p2 J* e
#define TCCHEN_SHIFT 22$ p2 y! O! P0 e8 n# x9 \6 V
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;6 \% b& N3 t+ V, H" E
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 R" T9 b8 |. M) q- \
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);! F% N6 }' k0 d3 D7 Q( S! A
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dma_addr_t dmaphyssrc1 = 0;7 H8 C9 f$ ~( K7 y V/ k0 d
dma_addr_t dmaphyssrc2 = 0;7 c5 A/ G! G8 r* U5 u* S
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;8 X+ | O# ^; [* n4 ^
char *dmabufsrc2 = NULL;# P! \. D$ p5 m
char *dmabufdest1 = NULL;; g* O6 s, g! H+ z! R
char *dmabufdest2 = NULL;3 D7 w/ T, r7 `7 r
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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);
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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