|
|
本帖最后由 yyj 于 2018-1-30 11:01 编辑 1 G# R6 F' v- F
- [code]EDMA sample test application
5 p$ z/ W( q2 {' B8 B. T - /*' @' b5 O: V4 W; e, g
- * edma_test.c- T; y2 Q4 {8 ^& ]
- *
$ o8 E1 Z2 F" a2 m, j$ A( i - * brief EDMA3 Test Application
: \1 G# o h5 S/ L - *1 E& C+ _6 U: _1 ?
- * This file contains EDMA3 Test code.
" b. y1 B8 U0 B4 j) d - *
8 I7 K5 d2 [& |+ B( e( I* d - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
% j+ B6 G5 _7 x$ ^9 @ - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT: o* {- t# @( _' F+ T6 g2 x6 f
- * TO CHANGE.
# b8 O, V# X. b7 ]" _( S8 U& j9 f - *
7 f% q% F5 m; k( W7 ?3 e, b4 R - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
4 _. N; B# Q8 s" v9 }& O- L- Z - *+ |: U/ G* d8 @
- * This program is free software; you can redistribute it and/or
# i1 |/ n2 ^- n. V& e( x( @ - * modify it under the terms of the GNU General Public License as
4 z- d4 ?; i( M+ N( Q1 W8 Y - * published by the Free Software Foundation version 2.7 u" Q) ~/ x- y
- *" s) w. m- P" B% i" C
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any: o2 s4 i( }' P# n& t
- * kind, whether express or implied; without even the implied warranty
3 r, H4 [7 b9 Q* O* V8 G - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
" ]. ~4 D- Y! r- q - * GNU General Public License for more details.
# m, c' o8 w& X4 ? - */
1 @5 S: Y, p. a - # c! c: ]" }- V/ Z1 V9 U0 B
- #include <linux/module.h>
3 {9 G8 B1 u# ^2 ]+ e' x4 D; u - #include <linux/init.h># f$ i0 @' X/ M; D
- #include <linux/errno.h>/ @5 _ m0 A% U* Z6 D8 r
- #include <linux/types.h>
4 g$ o0 F. @8 m: Z6 e f - #include <linux/interrupt.h>
" C. a) b& k( l$ h# w2 \. @ - #include <asm/io.h>0 R+ n2 y+ v8 f
- #include <linux/moduleparam.h>
0 y- n1 n6 f0 X' H' n& A0 G - #include <linux/sysctl.h>
3 `9 y: w3 ~$ Q: w - #include <linux/mm.h>
1 p7 Y. I, C1 i4 R. \ - #include <linux/dma-mapping.h>
. D$ @) G- ~9 B; w! b- i: }# X
( z3 D7 Z) O4 _, c( ~3 ?: n- #include <mach/memory.h>
; ^& u5 B' t( m1 | - #include <mach/hardware.h>- X) \) x2 K3 O. n
- #include <mach/irqs.h>
* G7 x c; U+ I0 n; m1 Z - #include <asm/hardware/edma.h>5 e1 @* E! i5 g4 Y. U) d' l
- : l" u, k( d. K5 ?! c
- #undef EDMA3_DEBUG" p5 V4 N% P! ]7 I( M' v
- /*#define EDMA3_DEBUG*/
1 I! O( x, m3 `( O% W: T" s - & }" t2 ]# n, ~8 l6 M' p( t
- #ifdef EDMA3_DEBUG" l* U! Y5 R* R. O! ]. }& `. U5 N0 i5 e
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
* w! F; S9 F4 m7 p; L! h" F - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
7 T+ |2 }( J% k* ^' [' C - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)7 I0 A" `) u9 ^& y
- #else3 M! e2 s. c9 U" _* `: B1 Z) w) A
- #define DMA_PRINTK( x... )# w _6 P8 Y( |/ M1 ]
- #define DMA_FN_IN
1 x1 ^% f0 h) I) g7 D - #define DMA_FN_OUT3 v+ o; G6 y; Z4 r; T
- #endif6 x' u6 V+ h s/ p2 p1 L9 Q
- M6 J, m0 k- S0 w: x
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)* c" N4 C; D" ~' K, Q$ F9 ~7 N% i
- #define STATIC_SHIFT 3
! k) e( }" t5 { - #define TCINTEN_SHIFT 20
- g* H+ [* K: j- Q" Y! j1 q - #define ITCINTEN_SHIFT 21
! }6 |; z" r# B, D2 e5 y" T) O- o+ }' } - #define TCCHEN_SHIFT 22
# v8 o2 b' o, D [ - #define ITCCHEN_SHIFT 237 G9 B# @+ ]% m# A( f
, @+ Y6 b7 I& F" T- static volatile int irqraised1 = 0;6 F0 ?, D2 O4 k8 s! j/ ]2 f
- static volatile int irqraised2 = 0;; p5 f# W- Z5 z* U
- c) `9 Q$ b9 m/ Q8 a
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) {. s5 D* s. i& Z9 y3 k( P/ y* S - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. x- V: |' v0 _5 y2 [8 R" `/ d
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( K) e- s7 N4 g
- ( W9 N, T7 X1 ~; X) }
- dma_addr_t dmaphyssrc1 = 0;6 A a1 c. P/ x+ G( S- k
- dma_addr_t dmaphyssrc2 = 0;4 Q" z/ X) d9 A( D" o/ @
- dma_addr_t dmaphysdest1 = 0;
7 M1 G# I- @' E& V3 Q - dma_addr_t dmaphysdest2 = 0;; O- A/ e' _- F# F& I( @8 M1 X
- ; g* \, o# B8 G7 i- b1 x& v& |
- char *dmabufsrc1 = NULL;
4 K' W8 t9 e+ Z - char *dmabufsrc2 = NULL;
4 e! M. O+ L- g0 ~3 ?& B - char *dmabufdest1 = NULL;
- q, E! e O1 v. w3 v - char *dmabufdest2 = NULL;
" ^1 m( c1 o" \( u6 B% s& `5 @ - $ a, ?1 `: K8 n; o" O: S
- static int acnt = 512;" I/ @" x, z. ~; w$ O% x
- static int bcnt = 8;
% c; L3 _8 \5 u: i - static int ccnt = 8;/ L+ d9 Z' j+ B. k5 H
- 5 {8 t% i- ^. q8 ?! H1 g* ]6 O% J, j
- module_param(acnt, int, S_IRUGO);6 l1 C9 W l) A; l
- module_param(bcnt, int, S_IRUGO);9 }- S' Y: Y# \! R, w3 D! g
- module_param(ccnt, int, S_IRUGO);
复制代码
! r" g9 _9 h/ o& Z! m( H
" M- Z, t) j3 C1 D- e2 M 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
# T6 N6 _- k9 D+ w+ d- b; {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。
- M8 m. e b- P$ O+ K 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。& P$ T, ]' J9 i u( T" J0 K2 D! ? @9 @
2 q, u2 {7 n* D, i
6 V+ O7 m4 {2 o9 `0 {9 @& M+ L |
|