|
|
本帖最后由 yyj 于 2018-1-30 11:01 编辑 % q' j4 U- Y. Q" D4 l1 ?) Z- H
- [code]EDMA sample test application1 T1 m& C' D$ G8 N. Z+ U
- /*
) Y$ m9 |8 R$ F! G' }: @, h! ^ - * edma_test.c0 }( N+ m i0 i
- *
2 h) z! L0 G1 b# u3 Y6 w - * brief EDMA3 Test Application
. ~$ }' K0 C9 }5 Z2 p, j - *
8 x- N; h6 L4 r! [8 P& P6 l - * This file contains EDMA3 Test code.& `3 d* k# X. D9 t9 Q
- *- \0 a! P5 |& h
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
& ~* M% p2 p5 ^6 G! z - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ o: ~" p3 A' c' g1 |
- * TO CHANGE.2 ?2 X' i" E9 J9 W/ G
- *0 a; |& F( N7 k" t1 ] I/ {+ v
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& Z9 Q6 j- @* P4 O0 G
- *' Z) R9 o. r# P$ R
- * This program is free software; you can redistribute it and/or9 o; {4 f1 b0 C; [8 J
- * modify it under the terms of the GNU General Public License as9 p/ a5 t7 A( [2 ~
- * published by the Free Software Foundation version 2.6 }7 Z2 }& p+ Z) H+ c/ T
- *# H* k5 m a& L1 w, g# x5 _
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any3 k: W& d8 @$ I% H) _: P0 q
- * kind, whether express or implied; without even the implied warranty
. o6 o9 M, o2 J - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
, A1 B; T0 ~0 ^/ X- ? U, e& k - * GNU General Public License for more details.
0 B/ b$ [1 p8 S1 J7 w - */5 ?- |) w+ d+ O# A
3 F( s+ Q4 P+ @: t$ n$ v5 W- #include <linux/module.h> B% k+ E( X$ H" R& u0 z! p0 j
- #include <linux/init.h>
" ]" @' Y1 H* ]/ e+ k0 l* R - #include <linux/errno.h>
7 N8 G/ {* |8 W& a1 l: T$ z- R3 Z - #include <linux/types.h>
& O6 @% L! G [, v - #include <linux/interrupt.h>1 _1 i$ r" O: l: j6 J) z! b
- #include <asm/io.h>
: n* z) S$ Z/ ] {# Y b8 S - #include <linux/moduleparam.h>
! [1 Q4 o3 s* d. P - #include <linux/sysctl.h>
$ Z8 N$ I p! t9 ?" Z, O - #include <linux/mm.h>
7 p; R8 `# V& v - #include <linux/dma-mapping.h>
2 K- N/ H2 Y7 G! g1 h6 x6 ^2 W! @
, U; @- T$ G( d' l" K- #include <mach/memory.h>
7 ?* v' e0 e4 v+ h# J8 g. W) @ - #include <mach/hardware.h>7 s1 D1 e1 u9 }- {2 P; T/ ^) R" X
- #include <mach/irqs.h>' N, U: }8 r v1 h0 A
- #include <asm/hardware/edma.h>: W F9 Q E5 S) K, \# P6 Y
- # h2 s! V" v6 n
- #undef EDMA3_DEBUG; e+ O( S4 V* T# u3 p2 {: [1 E
- /*#define EDMA3_DEBUG*/
) z) `4 v# K9 ^9 ~/ X
( l: ]4 u W! S: u- #ifdef EDMA3_DEBUG$ s9 L$ Z+ H& a: \
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
3 s' L. V7 S! p# _: F* w - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
" K0 q/ u; T+ y: A, @" H4 @ - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! g7 U: k- d: n8 V- l: a
- #else
& F# B; q8 Z; L1 a - #define DMA_PRINTK( x... )6 C) ~$ F& x& x1 A1 d( I3 s$ j) X. a
- #define DMA_FN_IN
& {3 C" f5 ^' h - #define DMA_FN_OUT2 T( y9 g, q! r1 D# v
- #endif
% F# d& ~. E, F! b8 U
8 M, Z6 o+ n W, Y5 z; _- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
6 C# Y7 P( h3 j" }" t4 c& E - #define STATIC_SHIFT 38 n4 p, ?3 z& }" B% h# a
- #define TCINTEN_SHIFT 20. A1 \$ v7 ?0 i* ?- [( A8 b1 `& s+ Y
- #define ITCINTEN_SHIFT 21
$ h- F) e. F7 F - #define TCCHEN_SHIFT 22
" x8 j6 B1 o2 ] l. |) w - #define ITCCHEN_SHIFT 23$ F: X6 l6 ~' F3 p9 Z' U
- T1 N) L M& Q8 F
- static volatile int irqraised1 = 0;
) p4 [, O/ T% y& n: t - static volatile int irqraised2 = 0;
- k0 Q/ J: W" W. Q: x% Q3 T7 n - ( W/ x1 e7 t2 H' y
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# N3 F: m0 b# e/ H3 _8 d3 N& Z
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 L- @) I& ^! h: U) M! J: m2 z- L
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( z ~+ x2 @- K5 N9 J6 A
- ! y% o1 l. P) D7 r. p9 P- O
- dma_addr_t dmaphyssrc1 = 0;8 [3 R" K7 Y, b1 }* ^. y
- dma_addr_t dmaphyssrc2 = 0;
5 D- ]% a# g6 `" x) D - dma_addr_t dmaphysdest1 = 0;
$ N% \, d" j* } - dma_addr_t dmaphysdest2 = 0;
/ S8 v: D" E7 i- I - $ k3 a' [( l( R; ?4 W8 Z
- char *dmabufsrc1 = NULL;5 H5 b# [' d7 u, a3 j
- char *dmabufsrc2 = NULL;2 p+ y7 R8 K3 p s* P! D
- char *dmabufdest1 = NULL;4 n% Y5 n1 A9 I5 F
- char *dmabufdest2 = NULL;. f$ W7 c$ x& ?* G4 H
- " v/ [$ P+ R# X* d( i5 Z
- static int acnt = 512; Z( {- c( B) O
- static int bcnt = 8;
. s4 ~( [5 F+ s0 u - static int ccnt = 8;
, O o0 v; y0 Q4 ]+ e
0 } g! G+ [( l; X% t7 i! u- module_param(acnt, int, S_IRUGO);9 p* s0 b+ C( i9 w( {6 T' ?" l( I
- module_param(bcnt, int, S_IRUGO);8 A! Y( M: [( w1 ?# }1 y
- module_param(ccnt, int, S_IRUGO);
复制代码 / k& ?; L1 G, L; g
# L6 |* F' q0 i$ T7 E
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, W; x3 u8 {) r$ K, }+ }- F
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。
+ k0 A& a( W1 D# f3 g& h( `1 [ 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。+ f, C" I( X1 }5 _% K Y
9 a$ p" @" F4 T T7 z
5 E- h( @7 ^2 m% d6 D( @ @6 E( J |
|