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 application5 l% d B! T. V+ @# L' J
/*/ Q2 r8 B2 L% o: K0 _6 ]
* edma_test.c
5 a; d |7 m/ ]
*
2 j* a K2 `# O# s
* brief EDMA3 Test Application6 Y' x0 ^: w4 g, [/ d! S9 i: f
*
2 k( R5 X; ?6 M* u/ M ~% `
* This file contains EDMA3 Test code.( x& E' J, {; G! c# ? h
*0 W+ b) H% ^6 j7 V- J( e
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
) ]7 W3 E( t- C1 F8 Y- t( f V
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 g# S/ b1 b* z& y- y5 C
* TO CHANGE.$ w& j! j& Z" l, A9 u% O+ r
*' S# c3 I8 i4 s- _4 i; K8 S6 O5 W
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
# }7 |2 v& q, L% C- n
*
4 A4 c Z5 r/ d0 _6 I- s; H
* This program is free software; you can redistribute it and/or2 K3 }0 c& C( Y
* modify it under the terms of the GNU General Public License as, g) A" ^+ \4 ]+ l/ x: O0 U( c# C0 E
* published by the Free Software Foundation version 2.1 B$ U. t" _/ C
** p6 N! m# ~3 v/ _
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
5 S# U2 |# e/ k6 {. _% M$ z
* kind, whether express or implied; without even the implied warranty/ ~, d7 ]2 ~5 E# m$ K
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the V0 U, N1 U$ L
* GNU General Public License for more details./ D9 L" J8 ]! z: z5 c
*/
7 c2 X& ?' {0 p+ v1 _- P
8 n% W2 m' a( X" c4 l! z
#include <linux/module.h>
& D% V( a2 l. X
#include <linux/init.h>4 z* g; j$ w# x9 ]
#include <linux/errno.h>+ l- b+ }! T7 F' m8 E. U% F
#include <linux/types.h>
# ]8 @& C6 p+ \9 ~4 ^) m
#include <linux/interrupt.h>) K2 G/ O" K; P- ^/ z
#include <asm/io.h>7 X5 V0 D9 g4 R" G8 W3 ?1 s8 h
#include <linux/moduleparam.h>
9 j* b }3 T2 P; w5 l- g" S+ \
#include <linux/sysctl.h>- N: _4 F- @6 t O0 z
#include <linux/mm.h>5 |) [+ J3 R* d$ W
#include <linux/dma-mapping.h>
0 g5 K- r/ g1 H/ v
/ g: M$ e' G3 k4 C& y# U; I9 g2 P
#include <mach/memory.h>
% }) z) ~$ J9 q) B+ w
#include <mach/hardware.h>! G/ I5 H [- y! ?* ^
#include <mach/irqs.h>
5 N* \+ q) H o3 q4 Q/ ?
#include <asm/hardware/edma.h>
& ~ y' b. v/ B+ Q2 |0 n4 g
4 }8 Z: E0 `3 B$ ^ z
#undef EDMA3_DEBUG1 D5 M m$ O1 ]% r
/*#define EDMA3_DEBUG*/+ p) Z. d) D) ]+ s- r+ p5 g) m
6 L* z: W7 p5 |! m D z
#ifdef EDMA3_DEBUG0 h; Y+ F/ } X5 x6 \
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ l& Z6 a/ a5 g8 L+ n& o% V
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): ^7 p% S8 r. O8 Z, {
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
6 p" e3 n9 q9 D
#else
2 S7 I: V; w1 ~! o3 p6 N
#define DMA_PRINTK( x... ), ~2 A: w- r% g, r! X. F) Z) ]
#define DMA_FN_IN) o6 k7 g- x" V! `
#define DMA_FN_OUT
7 O: s9 _+ p' ?* A
#endif& U- m6 c7 x' t' d' h
- ~" Y1 Y/ H: @
#define MAX_DMA_TRANSFER_IN_BYTES (32768)( `' T `5 R+ p5 z& ^: G
#define STATIC_SHIFT 3
' y8 _8 q5 h1 S2 J8 D0 S
#define TCINTEN_SHIFT 20
. z4 y8 r( W2 G9 m+ I6 |, L: u% ]
#define ITCINTEN_SHIFT 21
# r- V R" u9 h+ I6 [0 k
#define TCCHEN_SHIFT 22! q4 m% T& u5 i
#define ITCCHEN_SHIFT 23
5 e( U5 m* E, k) c* o# H W
3 g; k# j$ L5 [; c9 [/ h, J* D% J
static volatile int irqraised1 = 0;# k! J3 f+ K4 S% z
static volatile int irqraised2 = 0;
% ?; |5 f8 b e3 \0 L5 x
8 J; Y6 V# y$ B3 |6 ?: T
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
1 Z/ l; S) P0 g+ q, G! n
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) a9 s# E" _2 M. @3 }
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; c, ^5 T$ }' m1 W: _: u; q* G/ V
( l) H2 N2 |1 d$ U
dma_addr_t dmaphyssrc1 = 0;
R2 d. Y0 D) h: z; W6 X2 e7 |: y
dma_addr_t dmaphyssrc2 = 0;
4 o8 l$ B# W) S, u6 w; j* \
dma_addr_t dmaphysdest1 = 0;
( z8 X4 {3 k( _
dma_addr_t dmaphysdest2 = 0;5 u- R0 f8 ~2 b" t
4 c8 n1 y' F$ [& J
char *dmabufsrc1 = NULL;
B6 [) P; T) @& [* z7 J$ x
char *dmabufsrc2 = NULL;
5 n. V# D2 m1 W0 B" ~5 ^ n* s
char *dmabufdest1 = NULL;
V0 X& y1 j5 t
char *dmabufdest2 = NULL;0 _0 v" \8 E$ O7 N, ?, Y! r/ Y
' _ F, c# x8 T s6 a, p
static int acnt = 512;1 M9 I( K2 j4 n$ n
static int bcnt = 8;+ }; K- f" y# {& D" o$ @! P; Y
static int ccnt = 8;
( C: ^+ Z5 ?, B! ^: ?
- D6 q( S5 H" m8 {
module_param(acnt, int, S_IRUGO); L- v4 f/ t1 Z
module_param(bcnt, int, S_IRUGO);
+ Q7 M+ V# ~* g
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