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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/*' ~0 i5 m! T2 ~& z
* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*+ A4 ^5 W2 `7 I$ W$ J' w; r' w
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE/ e' G4 |6 o* S
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ h0 l4 }# f0 C( z! K% [1 {3 {# D8 R
* TO CHANGE.5 V# c8 w! k2 v' Y
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' X' }9 r: l2 Q/ J3 ?, x8 U
*
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* This program is free software; you can redistribute it and/or7 d: R) m. z1 T# f
* modify it under the terms of the GNU General Public License as: k+ X% w8 c* G/ N/ ?
* published by the Free Software Foundation version 2.; @2 c2 D/ X. j: x. t: _
*
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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+ _- I+ t, ^, ^3 W9 @- G$ f `$ j
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.# v; X5 g$ P n2 U' W5 D
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>6 T. R6 Y; }) C* w# U% u3 `3 B
#include <linux/types.h>' ~ J' u0 Z& [
#include <linux/interrupt.h>5 I1 M. f5 F8 f# y# ^% |8 N
#include <asm/io.h>+ G- `: ^) T% U- u+ e) Z
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>& P# O+ d# t; W. J4 I$ f1 k
#include <linux/mm.h>
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#include <linux/dma-mapping.h>; I ]' i; `' J* ]$ o4 }
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#include <mach/memory.h>, o9 E- w5 ~ N- j7 t% Y
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h> G& I9 I9 x2 K+ l6 C6 m3 l$ h
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/4 ? m j1 V% @! r0 @3 f* I' g: b
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#ifdef EDMA3_DEBUG% x" k& @! `$ {$ u v
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 G2 s" Q2 {1 u" H" R" w( ]
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)2 ]4 y# m A' d; A3 b8 H# S% Y
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)8 X2 v+ [ u2 B$ e7 W
#else3 C" z1 L/ g( M, { O
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)3 D2 s7 f& i( E, |" D, M& ~/ b
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 204 W$ T" E2 l9 f3 K5 f; u. H: ^( o1 @
#define ITCINTEN_SHIFT 21) K( i5 N7 {: N8 z6 ^1 I m
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23/ Y4 \) z# p% @. |2 Z' A8 m' u, L8 [
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;. u6 \1 B' J0 g7 b, N# |8 ]
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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);" S7 J7 b- [7 q- u: [$ m) B9 r
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ _9 C4 j2 A! U8 o8 c
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;' _6 F! O$ W& C
dma_addr_t dmaphysdest1 = 0;2 s; s0 ^) P5 D& ?2 H1 K$ h
dma_addr_t dmaphysdest2 = 0;0 E' {2 ^% f2 @ `9 M
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;5 x4 |, t8 G5 r1 {* j0 u s% O
char *dmabufdest1 = NULL;+ d0 S) J) |& {: b' R! a- _1 E
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;: F! R& L1 X+ r+ r% R/ a3 q( T
static int ccnt = 8;$ y8 N" r$ o6 J: H9 [3 o9 P
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module_param(acnt, int, S_IRUGO);9 O: B- P+ |- P! e# U0 z- b
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