|
|
本帖最后由 yyj 于 2018-1-30 11:01 编辑 + x$ P. d( X- y9 x0 W( H4 m
- [code]EDMA sample test application4 d( W- _# x! d& v- V! z$ N- `
- /*7 U. Z" j- Q4 b$ u
- * edma_test.c1 u ^- X) x: z7 {: l1 ~) D9 }
- *
# A, T2 F: N" Y1 v7 _ - * brief EDMA3 Test Application) h5 } J6 q- S) P% S k/ d, S5 Y
- *
7 x: \& p _, h4 N6 j( h4 S - * This file contains EDMA3 Test code.4 K {* U; R% S6 m/ j
- *1 v3 `9 l) w" {, t7 Z+ b6 O
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& I- O7 n+ Y( v
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" ^4 d7 i" S$ e0 z
- * TO CHANGE.% n, T6 T' Q* _" s& `$ L7 o
- *
, X) b" e, O: d) n0 G6 [ - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 C7 C0 T$ J/ n) Q8 n
- *
4 K# `$ }0 H: y; g" ? - * This program is free software; you can redistribute it and/or
' t$ i4 o2 ?- F' L. }: U8 s+ H: L - * modify it under the terms of the GNU General Public License as
+ q* e; j/ F4 N: j+ g - * published by the Free Software Foundation version 2.+ c7 _# L9 ]! u6 X8 B6 q! B
- *9 W: C) H% \7 ~; \- m$ z4 E
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any) Z9 Z5 u" h, g1 ?6 E- d/ s
- * kind, whether express or implied; without even the implied warranty: u$ g& m" l5 _
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2 E' e" i/ [3 ^" K$ u: K* G - * GNU General Public License for more details." H/ A, G2 W' }6 u% @5 e0 w% [
- */
+ h3 b( ^* M1 ]1 K
8 u# g a& a4 d9 E- #include <linux/module.h>
: D' m+ `$ f6 L l4 y - #include <linux/init.h>+ F* @" N* K* K6 j$ }, U4 O1 m
- #include <linux/errno.h># A$ ^7 L0 f0 e+ f& c W
- #include <linux/types.h>
: P4 k3 Q5 I' p - #include <linux/interrupt.h>8 H) f/ Z8 _! n: ]0 z0 ?. Y$ H
- #include <asm/io.h>
5 B( I, _& X- ^ - #include <linux/moduleparam.h>. Y F& S9 \+ J0 I' L0 n
- #include <linux/sysctl.h>' Q8 f$ |5 m% J7 t" Y) o9 Y
- #include <linux/mm.h>
( ?. D8 x, t3 w4 O& D: i: Y - #include <linux/dma-mapping.h>, ~: R6 a# O, J3 i% _" I0 }! ?
- % a# N* V# S/ ]$ J8 {: g
- #include <mach/memory.h> b$ s9 { W1 z1 u- G4 H6 E& W2 ~" Q. s
- #include <mach/hardware.h>
$ G+ N. t+ w9 ?7 h; F- ^$ F/ p - #include <mach/irqs.h>) o, K7 l2 O5 I/ @ b
- #include <asm/hardware/edma.h>
6 u1 F. @% i& o- {2 m# S' W - ! L. n0 i+ h* }6 u _; x0 z
- #undef EDMA3_DEBUG
% H0 B: f& C% t* o' v5 J - /*#define EDMA3_DEBUG*/* H- D% M1 ^5 ^' J$ j
8 o' J, T/ z& ~- O- n" l0 z& B c- #ifdef EDMA3_DEBUG
. A# @ Z* x3 M7 w$ I7 b: L7 \3 [& h - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
$ y8 Y1 o5 |4 j - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ i' Z& ]7 X8 Z( _
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
7 F( \2 r3 }# M6 Z% l5 a - #else
5 I9 d; U/ E1 B9 q - #define DMA_PRINTK( x... )* @. C9 t& N! R+ Y
- #define DMA_FN_IN
7 F6 s/ C4 j. d: k' \ - #define DMA_FN_OUT
: K9 W Q7 q9 v6 j+ G5 {4 ] - #endif
* h$ }3 I( y% X9 ?
* W8 H8 p" @4 _7 a- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
- g: ]& {6 q( ~% i, V/ D* f) l - #define STATIC_SHIFT 3
, ?4 {! i6 w6 p+ |0 f- a- }+ c/ [: L& q - #define TCINTEN_SHIFT 205 K9 K) z& Z, k
- #define ITCINTEN_SHIFT 213 B8 _4 z* L: `' `" S
- #define TCCHEN_SHIFT 22
: e. V0 Z; i& r# d - #define ITCCHEN_SHIFT 23' Z- I" g% n" [; @& ]/ G
, g3 N# a' G( g4 `4 }- static volatile int irqraised1 = 0;
+ F* z! x; P5 f5 q0 q: J) i1 ?8 X - static volatile int irqraised2 = 0;
; E6 D) V' g& ~: n- ?
3 |) ~" w! M5 Z! h+ G* h% T% {- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, @3 @; H6 J, z# I* ]. N
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. U6 C* M) O; H1 |6 `4 A0 c* }
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
% T( U% `/ h3 `) t
+ ^2 k9 l ~/ n: m4 } f- dma_addr_t dmaphyssrc1 = 0;
% y' k7 \' M7 w& B1 G, G - dma_addr_t dmaphyssrc2 = 0;# D6 `5 R4 B$ B$ T
- dma_addr_t dmaphysdest1 = 0;2 `/ @1 ]5 u% b, M
- dma_addr_t dmaphysdest2 = 0;7 `3 u# k. F, l* T8 M: j6 F
- ! b# I/ ~/ E" R- M3 Y2 C
- char *dmabufsrc1 = NULL;* F3 R5 E6 A% t$ v/ O$ `
- char *dmabufsrc2 = NULL;
4 Z) J R- b1 z7 X - char *dmabufdest1 = NULL;% \/ J4 g' a% g/ W
- char *dmabufdest2 = NULL;
: m x0 Y. w q/ A: ~% q) J5 H
7 s* M( L+ Z: M" s4 |- static int acnt = 512;9 ~; ]' Z Z1 A; I# P
- static int bcnt = 8;, V' P% H; d6 x' k! y |
- static int ccnt = 8;9 D! p& D0 `: G6 Y/ _
) {, n; s/ v' u j- module_param(acnt, int, S_IRUGO);
; R+ d- ~6 D4 ^* h$ \ - module_param(bcnt, int, S_IRUGO);- f/ B0 e' {" A% Q; W
- module_param(ccnt, int, S_IRUGO);
复制代码
5 H* U* Z0 B& e8 D) m) F
% u4 Z, T9 d) \8 X 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
$ e4 e J" V% @- q$ ]* }' tarm-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。+ \6 L! t- S* U! v: p- G, s1 ^
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
' `, Q! _( e: b. w; T: J4 J/ d
# f3 u8 K% }( ?) {) Y+ t
! T# j+ e5 h3 O1 G |
|