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
3 @ Q0 L9 X' U# w2 M
/*2 X" ~2 f3 X( }2 X, B7 y; T
* edma_test.c8 A9 [2 g$ e' j* h6 E
*8 }, I1 R3 }* n
* brief EDMA3 Test Application
, z5 U0 r0 K) `. |8 H
*
5 V. ]; `& j" y1 U7 m1 z+ Q$ x
* This file contains EDMA3 Test code.. S4 r9 W- B7 [8 m2 E2 {
*5 Y7 r, J* w9 G* w8 }7 H0 a3 M& {
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
. o5 n" K9 h( S6 l
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT& \- C: @5 \6 e8 i
* TO CHANGE.
" E2 j/ f; ]4 [4 f+ R/ q2 {
** d- F; Q, L3 Q- N
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 h/ U1 w* L9 X/ \4 n
*
8 ~$ q* g8 T+ T; {
* This program is free software; you can redistribute it and/or( ?) I3 S! ~( L' V/ v; L8 m2 }
* modify it under the terms of the GNU General Public License as
u2 u! Y3 z- i3 q: x) d3 S" L O
* published by the Free Software Foundation version 2.
* J, G/ D; A" Z0 U) Y
*
- E4 J( l% E$ G/ y Z
* This program is distributed "as is" WITHOUT ANY WARRANTY of any- K' X% w# S: U( |
* kind, whether express or implied; without even the implied warranty& O* c4 s S5 K( a5 b: R
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% N, W7 e# k" `9 S3 Y, L/ `9 \" |
* GNU General Public License for more details.5 R1 W' Z; }5 T6 F: e
*/
; ?% Z4 x$ z. N* }# Q2 H
& I; u( @0 U" V( s! u% n
#include <linux/module.h>
$ E9 U" d, j8 Y+ t
#include <linux/init.h>1 x6 k& H/ ] Z
#include <linux/errno.h>- C5 _. z) p7 u8 H# A7 L
#include <linux/types.h>: H1 n& U! V9 x# g, H+ u. j" K, y
#include <linux/interrupt.h>
; o/ L1 W$ r, S5 G2 |# {- X3 U6 X+ x
#include <asm/io.h>/ m( f O6 \7 o; c+ z
#include <linux/moduleparam.h>; T* |$ k+ g9 O3 V% a3 K
#include <linux/sysctl.h>
0 `& r9 A' o4 w! g# K- i: l4 W
#include <linux/mm.h>; w. b2 d) B& Q: i! g: [( A) f% d
#include <linux/dma-mapping.h>& _- t# |6 ]. L8 \9 P/ q
4 I1 ^- j$ Q/ K+ }% G" v: E
#include <mach/memory.h>, z7 k4 d5 ?& D+ q$ _1 E* v
#include <mach/hardware.h>4 b& z+ }. _* X; J* T- l
#include <mach/irqs.h>% m1 d$ |* A% k1 Q2 q# D1 j0 D( i" U
#include <asm/hardware/edma.h>
5 k: r; W* z% \$ h- Z& L* D" B+ Q/ T
) \3 f- Y7 e, D; i- W5 |
#undef EDMA3_DEBUG
7 `: u0 \) B2 [/ \- E [
/*#define EDMA3_DEBUG*/
( m# J! U' t; w, f5 z# Z
. Y) f$ s( @2 u2 j
#ifdef EDMA3_DEBUG
@7 b: L3 @5 f4 m6 K* w$ ~
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)7 V2 t/ M7 ?0 z- `8 d4 x/ T- ?% p1 a
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 @( s3 t4 S2 v, w3 A6 ?% @9 L
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)1 H9 N# A$ {+ o
#else+ w% w" y2 k# y# a. J
#define DMA_PRINTK( x... )! J7 |: J- z# f# l
#define DMA_FN_IN, W# K4 o! V6 s% N6 Y
#define DMA_FN_OUT
& @0 |$ N/ `9 y, D$ w
#endif; Y; h5 B" s8 z' f j2 V. C5 ?: e
, b7 c6 B1 W1 ?7 S* q! k
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
! L+ a: V4 Y3 v; v
#define STATIC_SHIFT 3* f/ _7 c' F& d2 P! o: ?; {
#define TCINTEN_SHIFT 204 u" w a! s1 Q: E7 C8 ]
#define ITCINTEN_SHIFT 21
+ o- z8 R/ T' d4 z
#define TCCHEN_SHIFT 22
0 V$ e* b$ n, h2 I2 m1 q8 w
#define ITCCHEN_SHIFT 23
' v4 a. E! y- x8 l, d
8 [+ e/ q0 w) h: i8 |/ W
static volatile int irqraised1 = 0;
1 w/ a' R; T9 ~4 H) _4 ?
static volatile int irqraised2 = 0;
. Z0 d; Q8 d' v/ R6 C4 n
4 |$ w! g' E4 F; o4 y2 X
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 N( K9 c! i4 Q! z
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
3 Z) |7 G/ H6 C" C8 K
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: M$ q6 E+ u, w5 v- S& V6 V3 G7 w
/ M/ U+ ?( K/ K
dma_addr_t dmaphyssrc1 = 0;& T, L. U7 w$ |' D; c$ ^
dma_addr_t dmaphyssrc2 = 0; W+ g9 k! J# h
dma_addr_t dmaphysdest1 = 0;- b/ C& n/ T( V1 Z% V4 l9 a
dma_addr_t dmaphysdest2 = 0;/ G! |% a# V0 q+ n/ _! t9 Y
5 r! p6 b3 }5 j. b ^- p! b
char *dmabufsrc1 = NULL;
: j9 u4 c. A0 w( b9 ?$ R
char *dmabufsrc2 = NULL;
1 n1 I' w8 A. ?0 E% D S
char *dmabufdest1 = NULL;& h: D2 t' Y' f$ N! b& C
char *dmabufdest2 = NULL;
$ O5 ?5 ^( O. H s f5 e
) t- n, O Q0 |" G
static int acnt = 512;2 G+ j& n3 ?* b* }7 H S% d; G
static int bcnt = 8;9 n0 u( O2 J7 m6 X
static int ccnt = 8;
i4 D7 A: l8 H& K* W$ M# K
% O+ d* ^; U- ]5 |
module_param(acnt, int, S_IRUGO); T2 H3 E2 X0 g
module_param(bcnt, int, S_IRUGO);
+ N9 B6 o' B& a' _/ 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