|
|
本帖最后由 yyj 于 2018-1-30 11:01 编辑
* `' e& I( u m. N- T# i- [code]EDMA sample test application
: |( g: D1 L5 i! y! K& t: C - /*
% P- o8 \' [) {# q - * edma_test.c% E1 z- [% }4 ~$ d
- *
1 u9 d# a/ ^/ I( v - * brief EDMA3 Test Application, o7 L M1 Y: ]5 R& ]0 b# j
- *
. e( F# Y9 ?. W h8 E7 ` - * This file contains EDMA3 Test code.
2 l0 e; x C- C. O: \, h - *4 g( N: K }9 v+ H9 `
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
5 _* D. n, n& V5 v2 u - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT( }2 t* ^& i, F, f1 r) O: e
- * TO CHANGE.+ |6 K v' W- E% g; y- S
- *
$ I! C4 F! M3 Y x - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
3 e6 C2 g9 E( B/ Y& h: T! G" K - *
/ O' Q" m" H" w5 e w& a - * This program is free software; you can redistribute it and/or( {. \( O1 _/ T" L0 j5 C
- * modify it under the terms of the GNU General Public License as
+ v3 R- s- n4 z2 p" j - * published by the Free Software Foundation version 2.
$ j5 r% A& e& S$ R5 |7 ^ - *
# f" P! g& b5 L8 D - * This program is distributed "as is" WITHOUT ANY WARRANTY of any/ }1 Z2 A, q( d$ A0 i4 L* ^9 U
- * kind, whether express or implied; without even the implied warranty; y8 b/ G% C3 H: B& l; B3 t
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
& f* u$ v( A8 } M/ s9 S - * GNU General Public License for more details.
k- D" x- H& {4 C1 V - */
l* f- i4 \" A7 m - 7 C( G! V* N9 N( x8 t0 }, s
- #include <linux/module.h>5 e. K" l8 v2 S" P
- #include <linux/init.h>
# q* D4 f& Y- n t/ m* P - #include <linux/errno.h>) `5 M- }+ M5 h" H% W: P
- #include <linux/types.h>
4 T9 F/ G% e" d) I2 \5 D( a - #include <linux/interrupt.h>, T% V# \2 H5 S6 J8 p( ^
- #include <asm/io.h>
0 Y+ a1 ~& `3 i) ~7 w, S - #include <linux/moduleparam.h>* w2 U: F. I: _, w* N+ w& o/ ~* M O
- #include <linux/sysctl.h>
) I' Q3 Q( l5 ~. Z. o. u1 u - #include <linux/mm.h>
7 l7 E; u) B( H9 W/ h - #include <linux/dma-mapping.h>6 y% r6 A8 O) j$ [9 F: T3 D
+ _1 }# u/ T6 h/ m+ l0 D4 `1 C- #include <mach/memory.h>3 Y2 Y. T: j( ~* b) K
- #include <mach/hardware.h>
- q# [4 N0 n9 q& \+ g5 ^: ?/ x - #include <mach/irqs.h>* J4 E r1 d& @* D1 n7 F
- #include <asm/hardware/edma.h>
}; R1 k+ U( L - + D4 i/ b) ~0 x, x4 w: {
- #undef EDMA3_DEBUG+ |. {* w8 ^4 ]0 R/ u( D
- /*#define EDMA3_DEBUG*/
$ H# U* Y- ~+ s! Q2 s9 \ - ! P3 g& k. |2 B0 B
- #ifdef EDMA3_DEBUG
0 l/ g) f. b; X# n - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
# e" e$ k2 b' [& e - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)* x! t5 i; j. ^5 Y
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)( T/ G F( k4 | ~. ^& T
- #else. {' a$ ~/ i( S0 N( z
- #define DMA_PRINTK( x... )
2 }+ O4 J+ v3 V0 s+ ?4 I - #define DMA_FN_IN
@) |/ q- D1 @3 i! G0 `# e - #define DMA_FN_OUT& [+ _+ c6 `/ S( Q0 h# g6 N2 o
- #endif5 m0 e2 |2 }; `+ c: X, g2 t$ t z
: s. `; Y3 f3 b- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
1 O5 |( \+ {, [3 @ - #define STATIC_SHIFT 3
; K( Y) v5 |. G0 p# r - #define TCINTEN_SHIFT 20
; m, D' n ]% T3 b/ E0 E- Z* \1 I0 t - #define ITCINTEN_SHIFT 21& P1 j/ Y H" \( Y- g, j
- #define TCCHEN_SHIFT 22) \ _: `- ~( @( t2 e+ \6 @1 H1 Q
- #define ITCCHEN_SHIFT 23* z7 o# y" Q/ O* K
- 4 z# ]8 @0 y, x8 e. R/ `4 D0 d; v* a+ k5 Q
- static volatile int irqraised1 = 0;
8 {: V, t# k2 p8 \% G; C' c - static volatile int irqraised2 = 0;
9 |0 S* L2 {% ~1 i% k - . }2 t. Q: U3 q. i- Q2 d& i/ }
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
, h# \. Q ^" n/ g* i - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 i: K! f6 V2 M4 w7 y. F$ U
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) K; ]& ~5 \ W
: w4 H+ X: ~8 j- dma_addr_t dmaphyssrc1 = 0;
# o( U# t* N- b - dma_addr_t dmaphyssrc2 = 0;
5 e; [; F3 e# v- Q5 y( l! P1 o5 K - dma_addr_t dmaphysdest1 = 0;
. ^8 `/ N! Q% g( R* d: }5 d - dma_addr_t dmaphysdest2 = 0; p/ a" F1 l+ o/ _
- . b: @$ i& H7 N4 ^3 v. q
- char *dmabufsrc1 = NULL;2 c. z) \6 b7 |# H3 {* {
- char *dmabufsrc2 = NULL;$ `7 x+ F/ M" F# g" B9 M
- char *dmabufdest1 = NULL;, R+ h" }- }% r, o( H
- char *dmabufdest2 = NULL;
" ?. ^9 n7 R- h* y2 D
- e( N. F; Q; r" U& k- static int acnt = 512;4 c( }! d# ^# J2 t7 e; ]; k
- static int bcnt = 8;
) \! Y# O% N( [4 f% C* T9 z - static int ccnt = 8;8 R8 ? M! H! P* O M, H# _4 o
- $ d) \; G% t% a2 J- Q
- module_param(acnt, int, S_IRUGO);
' E, n) O. O. V3 v0 ] - module_param(bcnt, int, S_IRUGO);
) I2 \2 a2 ?6 A - module_param(ccnt, int, S_IRUGO);
复制代码 7 r+ }; ~8 N" X6 E; h6 K! p( k
' B8 B$ y+ H; Z8 |; [
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
5 B5 s4 G# n2 P2 a8 _# x$ c+ parm-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。' S; J4 \. I( R/ e7 {$ q, ~ |
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
+ a1 g; p+ \* \: T! R* U% ?1 m
9 D5 d2 g" C8 ^( F- [
; h; S) n1 _; A9 ] M7 {3 Q |
|