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
; \0 b0 j6 u! z
/*$ ^& |* I0 u* C0 S" B
* edma_test.c& q. x. [" |) o+ |% o
*% _2 {8 K+ Y" L" x. V& j5 V8 B% Q3 M
* brief EDMA3 Test Application
5 V: j$ |: R) P7 F' Q l
*
% D4 r7 X7 n- W2 ~
* This file contains EDMA3 Test code.
*
4 p, c: d+ I x% z6 d9 u
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
4 T' V3 B I$ L: [4 D3 C& B
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
- t/ V0 Q& r6 M$ p- h @/ z
* TO CHANGE.8 O* W5 M! \0 i' t7 V$ P/ X6 @: F
*
: x! j# L$ o. V
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
$ T0 L' a2 f8 Y0 F2 N7 R
*2 j8 S* Y, G0 W# K. o: I3 I% I
* This program is free software; you can redistribute it and/or/ g$ v; i* L: X0 z. j
* modify it under the terms of the GNU General Public License as
% C' C$ `1 [* H1 M- t: I
* published by the Free Software Foundation version 2.
) [2 j, G( u5 s
*
0 n7 G9 i3 a" O- l
* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 I8 X5 M6 w$ x1 h& r% u2 W5 E
* kind, whether express or implied; without even the implied warranty( H' A# ^, l' r2 W
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
. w, d8 c! @6 \; [% V; S8 l: r
* GNU General Public License for more details.3 [9 ^0 D7 K8 Q5 m0 w
*/
) u! {% {5 [! G; I9 @- L" T
7 u/ _$ Q( Q3 f8 w% P7 {
#include <linux/module.h>8 g$ V& w! e1 j& X6 e$ i
#include <linux/init.h>
3 Y! e$ z/ V, F+ w1 o
#include <linux/errno.h>, H. K) o+ W4 G" {+ ~
#include <linux/types.h>
" X+ j: U! B' w# x# _: \! \
#include <linux/interrupt.h>
$ N& O% {/ H* d. K' Y+ K/ b3 a
#include <asm/io.h># S+ O+ V. ^6 O+ U% Q; g5 U3 v
#include <linux/moduleparam.h>: ]' u: s7 G' F5 ~) W
#include <linux/sysctl.h>- L, R( C# r2 T6 Y6 h
#include <linux/mm.h>
c9 q8 w; c. T T
#include <linux/dma-mapping.h>8 ~2 b# L; @& p* P! D) H# t0 i
; a! f0 N7 F! D
#include <mach/memory.h>4 g# b1 v4 k* w$ B
#include <mach/hardware.h>
/ t/ {' f8 z% Y/ Q
#include <mach/irqs.h>4 E, K1 t5 s. {8 J, }
#include <asm/hardware/edma.h>
0 M- B6 t3 p5 q n# g. m4 g
" G) q# E) n0 x! w
#undef EDMA3_DEBUG* }3 G% b& W2 E0 h' q& U& ]
/*#define EDMA3_DEBUG*/
& N8 {8 X& l; ^# b/ `! ~' H/ x7 |
: ]/ L5 P8 _- ~' ]! _* \/ [3 b
#ifdef EDMA3_DEBUG
; @1 A8 b3 T: l) a3 Z$ {& o3 N
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* k% |+ i3 g1 w7 J( s3 k
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__). B+ a6 Z! p9 g* U5 k: f
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! N1 Z# o# B: b$ s9 A
#else0 C. k5 D8 Z- {. p6 Y1 B
#define DMA_PRINTK( x... )
! W- [8 W) y- y# Z& \7 |2 X
#define DMA_FN_IN1 p6 s/ I. `# N. h
#define DMA_FN_OUT
7 o% {. d5 I E
#endif
6 S" S' G+ D* _6 j
! j" R" z0 M* t9 @
#define MAX_DMA_TRANSFER_IN_BYTES (32768)& E4 w; O0 S1 G
#define STATIC_SHIFT 3) M6 A: F K: f+ Q
#define TCINTEN_SHIFT 20
" F& ]: p! V; T# ]
#define ITCINTEN_SHIFT 211 u8 i) O* M5 q+ M4 H1 {( e) F
#define TCCHEN_SHIFT 22
: s. t+ |% o- K" E0 s2 W0 e
#define ITCCHEN_SHIFT 23
* {' a; Q! d" }0 ~/ I1 W. Y1 Y# n
+ i5 }& F2 _8 ~0 z
static volatile int irqraised1 = 0;
( c, W6 j, A, ?/ r3 X& b% [1 }
static volatile int irqraised2 = 0;; d( M, }8 ?. f9 r
2 |4 ^# N1 ?, f# M. W
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
4 K' t" c6 n" v$ t3 e( a( M
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: H4 w; B, f0 D B
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
3 _- p: J9 I: E" a
, ~/ k7 s! p- Y; f5 q
dma_addr_t dmaphyssrc1 = 0;. Z4 N6 R/ I$ g& Z
dma_addr_t dmaphyssrc2 = 0;3 o7 V0 C5 T: W
dma_addr_t dmaphysdest1 = 0;
: n7 j* [. `& O8 B J- ?# r1 Z/ X
dma_addr_t dmaphysdest2 = 0;8 Y" Z( H* i# Y: k
5 }- g0 ~. z+ [# J9 Q" r" b' L. @
char *dmabufsrc1 = NULL;
" o& O1 D' E3 P3 s6 G
char *dmabufsrc2 = NULL;. w4 h$ R1 V3 i* [5 T
char *dmabufdest1 = NULL;
& {- ?) y1 d! ~3 A8 y2 L" U
char *dmabufdest2 = NULL;9 _: q! w8 a t. `- a( n& a" S
5 u4 b$ o B K1 E8 [" ~
static int acnt = 512;
6 c* U6 G- Z4 b8 x0 W* U: ` N
static int bcnt = 8;9 m& k5 P, u- i& |% M
static int ccnt = 8;
! c! \9 b+ ?! t7 @# m: X
3 U l5 R* S& u
module_param(acnt, int, S_IRUGO);
8 X/ ^- |- ^- i
module_param(bcnt, int, S_IRUGO);5 O4 O3 X% j" i
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。

		自动登录	找回密码
密码			立即注册

[未解决] OMAPL138如何在Linux下使用EDMA3驱动