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本帖最后由 yyj 于 2018-1-30 11:01 编辑
x1 ^2 r9 n4 T( }: V- [code]EDMA sample test application
8 f+ P4 X) _1 s# z - /*
4 Y0 Q& E' q* y k* x, Y# ~/ z! { - * edma_test.c
. ] m7 x! P+ u/ p4 W - *
8 Y: W, }& ^+ Z! ` - * brief EDMA3 Test Application( S3 c8 N7 C+ M( k. [+ x/ z7 {
- *" S3 B3 V# q0 w. ~9 O( U) [. o9 G
- * This file contains EDMA3 Test code.; a) l6 Z# B" a0 O0 ~
- *. K$ {' V. X! i4 T$ x$ g7 ~$ q
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 W( d5 q, O" W" F Y- u- h
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
7 U* r' P( H. M8 | - * TO CHANGE.
8 [2 W/ L+ T1 z/ ]! k8 y# p - *
: @! \2 P& S& O+ m% k: ] - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# C4 D m. Z. _/ }" T
- *
5 V% S- \! ?; S* h9 ?) X) ? - * This program is free software; you can redistribute it and/or8 Q8 ]+ H% K, s
- * modify it under the terms of the GNU General Public License as% g- ~; U; Q* P$ L8 n
- * published by the Free Software Foundation version 2.* h. \1 ~& E& u% {4 |; P9 T
- *
# n; v# }2 S* x' K. K - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
) X7 c7 }7 y- l$ O, B$ r - * kind, whether express or implied; without even the implied warranty
4 q# `8 A. t' E- [3 J - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% j/ V) a! P/ h
- * GNU General Public License for more details.* W+ d* J& h* ?9 _. V. M
- */, x2 r. B! W+ V
- # i/ h" E( G& y) W
- #include <linux/module.h>
; ]' W/ a) F# C, M* N: D - #include <linux/init.h>' x- m7 d" I' ^# x: I# r! k
- #include <linux/errno.h>
* m+ Q/ Y; ]% _% e# f, p( }& k) F - #include <linux/types.h>
8 n8 b: h/ j5 U6 J5 f - #include <linux/interrupt.h>' Y V) B0 M$ B* N
- #include <asm/io.h>1 f9 p/ H- E4 C5 ]7 W' V
- #include <linux/moduleparam.h>, o% _4 v! x' J0 S9 T# h
- #include <linux/sysctl.h>; v6 \; S% h! h- q
- #include <linux/mm.h>. q) ~ B) j; ]( a
- #include <linux/dma-mapping.h> _- ^2 e, ?. D# L
n+ W0 d8 x, F, d' z- #include <mach/memory.h>
) E7 N; y; _! W; V& {8 F( p: P" Y - #include <mach/hardware.h>8 n2 w/ s5 I- T6 j5 {. l9 c/ g8 L
- #include <mach/irqs.h>* M$ e" b9 r& E7 F5 n) r* S9 Z- F
- #include <asm/hardware/edma.h>
# ^: p/ m% N3 k* s0 \6 c - ( v9 @0 v. y3 T$ E# `
- #undef EDMA3_DEBUG
) k& _; O& q% M2 @ - /*#define EDMA3_DEBUG*/# y+ d$ v0 p8 k* f+ h
9 W5 j) W4 X3 \' _- #ifdef EDMA3_DEBUG" r0 ?$ n0 N# J5 h/ P
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
3 n7 u3 o# d! C. v5 S8 W( |% ] - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
* s7 B- W: n" g" x& m0 Q. D1 t! W - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)3 d" p, C2 g1 W1 w* e7 G! ]
- #else( m/ j- q% `3 a- r
- #define DMA_PRINTK( x... )7 z4 P6 R* c, i" y7 o @
- #define DMA_FN_IN
: q, J( I1 g/ H! } - #define DMA_FN_OUT
0 A$ r# K/ ~: G" ]( j - #endif, l/ Y" o/ D) L- i7 b x$ W" s
) g+ `' ?0 q0 z$ M" F- #define MAX_DMA_TRANSFER_IN_BYTES (32768)1 U3 A. K% i: J9 a
- #define STATIC_SHIFT 3
, @- u+ w: j# Q M/ w( O. ]4 ` - #define TCINTEN_SHIFT 20
0 Z1 x Z$ W* f; b8 e - #define ITCINTEN_SHIFT 21( W& R: i$ E5 f; s, w
- #define TCCHEN_SHIFT 22+ o( v! ?$ B3 b3 n( }
- #define ITCCHEN_SHIFT 23( C; C x1 B2 y7 i
2 {0 l; y3 K! m6 E- static volatile int irqraised1 = 0;7 K- _$ J: f4 x# X9 ]! x
- static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& f9 N u. v _# j7 ?' k
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 K8 z# G. _0 y6 Q2 F: y
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
$ ~7 y0 k0 J* F$ ]( W- x4 W: N - 3 ?( J9 C& a( d3 v9 v$ g0 A
- dma_addr_t dmaphyssrc1 = 0;
, g% H4 R5 x2 |% A* s- x/ ]6 X- x - dma_addr_t dmaphyssrc2 = 0;
$ x* v& Z" V! C7 K2 J$ C - dma_addr_t dmaphysdest1 = 0;
# C( b$ e Q0 q - dma_addr_t dmaphysdest2 = 0;9 Q: [' u: G+ Z( N( ~- H. i" j
- 6 |6 l5 a. Y9 h' z
- char *dmabufsrc1 = NULL;2 ^2 @4 u) C1 s$ n* U: T2 i1 V
- char *dmabufsrc2 = NULL;* s: P* ~* z: h( @, b
- char *dmabufdest1 = NULL;
: v+ }- n) W. Q8 R% u - char *dmabufdest2 = NULL;
: y& Q: D8 J1 @! b. _/ x; x% u6 j1 `3 F - ) r* i" k8 u# Y' \! w
- static int acnt = 512;
/ K/ Q' K. s* b3 b2 L) y3 g# T1 ] - static int bcnt = 8;
& } _8 ], E+ {4 U* N - static int ccnt = 8;3 h' |1 y8 f4 r) l
- 2 c, w0 {/ n. c0 R* w3 L+ L3 ^
- module_param(acnt, int, S_IRUGO);
2 h' W$ _) y+ k G - module_param(bcnt, int, S_IRUGO);
+ ]& A/ Y2 j' h8 S9 E - module_param(ccnt, int, S_IRUGO);
复制代码 3 k9 Y9 w4 L4 E
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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' G3 W! i; W7 r( f; T- F4 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。
7 O8 l j- T: j: R8 l* d" S7 m 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。. j5 L4 x) B' S0 f7 X) Q$ `
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