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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/*! v+ M+ s% C9 I9 C |- M7 s4 A
* edma_test.c2 u9 C% X8 w& f# E3 Z. t, [
*- r% @+ k* A, h: T7 |
* brief EDMA3 Test Application( K/ r! k- E# ~9 w
*
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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) F0 I. E: O4 `5 F1 t: X
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT( V3 q+ U! E* A% C6 Z- o; t2 u3 Z
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 r, U; Y0 U$ A+ Y! I W9 E$ L+ S
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* This program is free software; you can redistribute it and/or4 Y1 v8 w- d1 q: v' t' V$ S/ I
* modify it under the terms of the GNU General Public License as0 s+ h/ i1 ~7 l5 J
* published by the Free Software Foundation version 2.
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*1 Q( ?% b. f$ t6 G
* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ d( n2 k1 J5 r" Z1 W# p, p
* kind, whether express or implied; without even the implied warranty$ W. K d7 T/ a- m0 k' \" n
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ X7 S. Q5 H J. X& D1 r6 R
* GNU General Public License for more details. u5 u% o' Q' J8 ]$ C7 Z* u
*/
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#include <linux/module.h>- F4 d& j( g" F" A7 h. ], l) {
#include <linux/init.h>3 u. ?- K) H; }! Q1 ^2 N
#include <linux/errno.h>
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#include <linux/types.h>3 c+ O7 D c7 v+ H% I F
#include <linux/interrupt.h>: R" U) a; u' i, l( b1 L
#include <asm/io.h>; p* W! \; d& q- f' R) o
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>+ c9 R8 r4 N; m/ w
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>/ }* l7 b! W7 E, U* N) [
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 z8 E9 e* Y k& p; F) R$ F' M
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*// o& [# C$ w& t+ C5 k) u. A
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#ifdef EDMA3_DEBUG0 U0 Y$ O! K, \
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)1 ]1 B" N& B5 a5 Q" r) e' R9 p; I
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); v( I3 q" i' v; k$ N" l
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )* u( b, h" c% l6 N
#define DMA_FN_IN! X% y D3 e& O) e0 Z0 P, [
#define DMA_FN_OUT
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#endif1 P3 T7 W: D3 Y! ?" h2 g6 p
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 31 d. n- p4 L& e* \3 k* d
#define TCINTEN_SHIFT 20+ d) E: d' x7 G+ C6 j% d1 V
#define ITCINTEN_SHIFT 21& i; |0 v& J7 A
#define TCCHEN_SHIFT 226 e( I- M* |. F N2 R9 v
#define ITCCHEN_SHIFT 239 s1 Q% M f8 P8 K7 s; g1 k, o
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static volatile int irqraised1 = 0;- C% T9 D, {% U" `# b/ z
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);$ M# u" u2 J5 [. o# F
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;' {8 a# {( g7 ~$ P; Z" a) |( s1 y
dma_addr_t dmaphysdest1 = 0;- R3 p, z7 p4 T% ~6 D2 }4 {
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;6 {' W8 W6 K x. i7 j
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;# ?# s) [8 h, Q- V5 e! i
char *dmabufdest2 = NULL;& \+ t- z0 S# B# l* c: ?# ^
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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);, \0 {; {( p J$ q& v4 X
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