|
|
本帖最后由 yyj 于 2018-1-30 11:01 编辑 ( i+ ^* e" w0 \ ]4 _
- [code]EDMA sample test application
5 d9 _- N I; `$ t9 ^3 V - /*% m' o4 o, s3 M4 S4 Y
- * edma_test.c
+ \- n4 O# V: G - *$ u& j1 e/ S0 p8 o. c- V8 q2 t
- * brief EDMA3 Test Application
- F3 T' O: V. w- [8 J$ S - *
6 K8 P) A! ]7 D* z4 ?; f+ T. m - * This file contains EDMA3 Test code.8 Q5 \4 V" k* v" \
- *
' P% J& P1 o$ y6 q6 B" z! v - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
8 Y# I6 O0 w' G9 A6 {+ a3 C& x - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' k; v y5 A2 u0 c3 y9 {
- * TO CHANGE.
7 k: _! h% J8 e, S! h7 D; P - *; ^2 m; ]% U$ l3 g
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( z* u) F) G5 ?1 [' X* D4 [5 B
- *2 S( ~- R% f. F8 ^3 ~/ j) q' ^
- * This program is free software; you can redistribute it and/or
3 U. N2 c" C0 ~/ n" }5 E* q - * modify it under the terms of the GNU General Public License as+ I7 @7 I& u: W; _2 ]
- * published by the Free Software Foundation version 2.
/ v# O5 F( Z6 o3 N7 ^ - *0 ^% Z& o% E: j$ L) z# ], z( [
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
( J2 j( S$ a9 m9 v/ b" C - * kind, whether express or implied; without even the implied warranty* w( R4 C8 F( u! j3 \9 O
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
, i, i I4 m- u6 I" p& u - * GNU General Public License for more details.1 I. v5 I: [8 t e
- */2 Q- D6 s }% ^. z
! b* e) B2 e7 K; `- #include <linux/module.h>
! k: X. F- A/ X2 M6 R - #include <linux/init.h>
/ @; ~9 Z5 ^' v `4 m7 n' b7 Z - #include <linux/errno.h>: C3 {4 K# K" h( q
- #include <linux/types.h>
* ]* I( M7 s! w0 u1 O& ^ - #include <linux/interrupt.h>
- t R* J) M3 }& @: `4 V" L - #include <asm/io.h>
% K6 p& ~8 U$ f) j; P& r - #include <linux/moduleparam.h>
5 D" w& w5 g- V) \/ Y6 _ n3 s5 h - #include <linux/sysctl.h># ~( Y' z. W% g4 b
- #include <linux/mm.h>
$ J. Z3 L; L7 R: ?5 |5 D/ m4 e - #include <linux/dma-mapping.h>
# n( A; K* y' G: W: D6 o
: y2 X: r8 M" \5 c- C3 L2 O9 y7 p) P- #include <mach/memory.h>3 t- U2 e" c! D( e+ T7 n0 h
- #include <mach/hardware.h>/ p* ^. D+ [0 s: x
- #include <mach/irqs.h>: M) y0 ]3 `: }- z9 g3 ^& O
- #include <asm/hardware/edma.h>
f7 }* @2 n' v" U8 w3 u - 1 V- l- W- d l8 P3 W4 b+ r9 J
- #undef EDMA3_DEBUG" s# `; F! d! v' u H
- /*#define EDMA3_DEBUG*/* R& Y0 J# N0 }9 J9 G$ n8 e
, U/ w9 b4 V; S. A, B! q- #ifdef EDMA3_DEBUG, d% j: Z+ }+ Z2 F& K4 ~
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ s0 S: e0 k& Q1 I
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
. q8 Q/ \: Q: n2 N p8 O4 J* C - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
* r0 {/ d9 \/ w* k9 u5 d! ~2 Y - #else+ R. F3 ^0 M, O9 L1 Z) Z1 B6 g
- #define DMA_PRINTK( x... )3 C( m) [) o# v/ v7 B
- #define DMA_FN_IN
7 _3 X- @9 z0 r! W - #define DMA_FN_OUT% G; ?9 s6 I" ^5 M& m* G
- #endif
1 }) @: K& \4 ~3 B2 L9 N" a) h G& d - ( w \6 g4 [; S2 s! K* C7 G3 X$ `
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)6 g+ b8 e% r" z; d
- #define STATIC_SHIFT 3$ y) I6 O3 ^5 B' h! I
- #define TCINTEN_SHIFT 20
0 [8 z6 C, B" a$ U z& O4 O1 p - #define ITCINTEN_SHIFT 21. R; ] p5 c R" T$ x6 y; W2 i' W
- #define TCCHEN_SHIFT 22& d: [# w+ R$ S2 Q- ^+ O* V7 |
- #define ITCCHEN_SHIFT 23! m8 f$ ~+ M3 ?' k1 @7 j, t
- " |$ N5 R+ N# ^4 E, E5 U8 g
- static volatile int irqraised1 = 0;8 F3 Z# W \- X2 ^+ P
- static volatile int irqraised2 = 0;
2 p% x9 z- e( d7 y* g: l1 V8 |
$ ^9 W8 Z/ X9 j! ]( D: k# Z- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- B! P! o/ r4 q# i. N
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 p: n G- b8 T3 K2 l8 U2 S
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
$ `" r0 B$ q! g - & L2 ~) u+ o- H S
- dma_addr_t dmaphyssrc1 = 0;8 y0 b6 H; Q8 N% h: e
- dma_addr_t dmaphyssrc2 = 0;
& F! y" J# n5 R) l- `- i/ v& M! b - dma_addr_t dmaphysdest1 = 0;6 J+ C1 B! i; k/ Y/ F1 M
- dma_addr_t dmaphysdest2 = 0;- g: E6 M6 ]' {2 c/ n
& O% V& M0 X1 n- char *dmabufsrc1 = NULL;
3 Z% j' T/ j* _ e - char *dmabufsrc2 = NULL;
`7 b5 `; q5 B- V* b! n - char *dmabufdest1 = NULL;
4 H! n6 \ z% }1 A! B4 N - char *dmabufdest2 = NULL;) X `: e$ g6 X* k$ ]
, |% N8 B1 j/ N0 t! m+ a+ u5 i- static int acnt = 512;
) X5 r: {' ?+ n; U8 ]2 b - static int bcnt = 8;
9 J8 N8 n( d; U+ r - static int ccnt = 8;
6 @- ~3 J7 q' Z' z1 V8 t
9 J, m! Z" t: |6 O; R- module_param(acnt, int, S_IRUGO);
& j( f5 X( k8 J# q! c V W2 U) S - module_param(bcnt, int, S_IRUGO);
% r! m' w0 I1 Z$ n - module_param(ccnt, int, S_IRUGO);
复制代码
( v8 s% D3 j9 s7 w" [! W9 m+ M. }6 N2 O
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0 ]7 r# Q: O, J: `3 q) k
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。3 L: o$ K, X( q- y( V! w: E2 {
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。: k- G o3 b8 l( C/ W4 ?$ o5 i
( }6 N6 i' x8 y8 Z' Z! v8 y2 U
! s" k: M# f# j/ A |
|