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本帖最后由 yyj 于 2018-1-30 11:01 编辑
- i1 c* w0 r8 Z+ B. w- [code]EDMA sample test application( [/ s5 h1 m$ J, m
- /*8 V( [0 l+ r" h |
- * edma_test.c
! B4 F" w7 l4 N* ?1 ?( c5 M; b - *+ S7 A: z: D3 m& `
- * brief EDMA3 Test Application+ X0 [. b. w/ g) ?# o
- *
; j& f K4 J) Y b1 D - * This file contains EDMA3 Test code.
3 }: U/ T+ a& r# Z- m! H- ?! p - *
4 z* e9 |9 [% d% x! b/ J! \/ p - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE7 ], b3 q/ H- o" G: T. k
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
8 e; h* B$ s- Z0 d( L - * TO CHANGE.
+ Y# T& c' z* B$ E/ g - *
: t8 e7 ^2 D+ o/ j0 ] - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' N: W9 A( V0 Z u( p
- *
+ L' g& \, `# S; {% x - * This program is free software; you can redistribute it and/or
# K* \* h7 M0 K3 R" j- c" Z - * modify it under the terms of the GNU General Public License as5 Q6 \4 D& q7 B4 v) ]) i
- * published by the Free Software Foundation version 2./ [( }/ Q1 K0 r7 [* \# c# r" z
- *
; A% Z5 _/ ^1 `. [9 @ - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
4 W! w; C/ r3 b8 F6 K4 C6 c' z: N6 q - * kind, whether express or implied; without even the implied warranty u+ m$ @8 ` E: ]
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; I, z, W" J: C2 x0 ?6 I8 z$ H) n - * GNU General Public License for more details.7 V' v+ A! _# K; x$ U O
- */+ u5 O- a% Q4 V3 T& S
% d+ V0 M4 W& _5 L0 H- #include <linux/module.h>
, J) _9 q2 C4 C' K. u' B2 G! k - #include <linux/init.h>( C- L* A r- X
- #include <linux/errno.h>
5 \- V, S( K+ ~2 ?+ n - #include <linux/types.h>
. |8 Q- Y% {; s" ]+ v, `) O - #include <linux/interrupt.h>0 ~1 |" W8 L; E- ?! U
- #include <asm/io.h>. @# K) ^ H7 B4 C+ k
- #include <linux/moduleparam.h>2 o2 Q* s4 k- H& C
- #include <linux/sysctl.h>6 p) n% Q5 ^6 E+ Z0 v5 [8 L' c
- #include <linux/mm.h>. F" G8 X8 Y( Y" _$ V
- #include <linux/dma-mapping.h>
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. F7 ?0 u( S2 j- #include <mach/memory.h>9 ^$ r0 b; }% V( i- v! c% R: Z
- #include <mach/hardware.h>% L/ K1 f ? X; u4 G. U
- #include <mach/irqs.h>- _& w2 |2 m3 B- B% G \/ ~1 |" b
- #include <asm/hardware/edma.h>4 \' w, k1 i3 `0 |: f5 L
( o5 P1 v+ q D- #undef EDMA3_DEBUG
4 d! d- R2 h) `; M7 z* d; [ - /*#define EDMA3_DEBUG*/6 P6 N& y i% b+ \4 x1 q K
2 m# s" P w7 I3 `2 \- #ifdef EDMA3_DEBUG: w& j, a8 `. v- g# r
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
& X* g# e1 j7 h: F - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
+ o' x- n7 z7 a - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! t5 }9 ?- X$ E9 D2 N
- #else
I" U: U. }9 k4 j2 l2 u! {, ^8 C1 c - #define DMA_PRINTK( x... )/ N/ P: a9 S5 x, i- p% {
- #define DMA_FN_IN4 A( f5 C+ [* U6 E d* B! [
- #define DMA_FN_OUT3 X3 A/ X- }: D9 }3 p3 s [$ ~+ r' p8 h
- #endif/ b- L7 _: n: I* ^0 H: C0 M4 W# Z
- ! n+ b8 t3 J: J6 Q
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
" l2 f" l8 T+ A0 P5 ~, @: l - #define STATIC_SHIFT 3
( ]; L2 a! f p - #define TCINTEN_SHIFT 20
: g, g/ {- p6 ]. p$ h4 y6 b* N" Q - #define ITCINTEN_SHIFT 211 J) k5 G. h# \; M T$ a% x P
- #define TCCHEN_SHIFT 22
4 o; Y' @4 K6 z9 P: H - #define ITCCHEN_SHIFT 23* E0 M6 o' I0 `
- / X7 `/ P2 I& G* p, _+ r
- static volatile int irqraised1 = 0;# _- W5 z+ d d2 G
- static volatile int irqraised2 = 0;. M0 r1 h: j1 o5 s
! k! j: }$ O; L( w- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& x* k. L: M- v) q& J% J, [
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
3 C) s: ]) T4 |7 `- F/ [) |! ]* a - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 b4 u9 a. q$ R2 d% K! j5 _
4 F: m! _8 w$ X# E& o' L x4 D- dma_addr_t dmaphyssrc1 = 0;* ]% L, M0 Y1 S" z, `
- dma_addr_t dmaphyssrc2 = 0;
1 D% W3 c4 X9 ] - dma_addr_t dmaphysdest1 = 0;: u! ]: a+ ^+ \4 J
- dma_addr_t dmaphysdest2 = 0;
# G4 F# K2 b- K0 U2 O* v - & i. R3 F8 j+ Y" p8 {* L! Z+ [, T
- char *dmabufsrc1 = NULL;
# A% @8 ]+ Q6 P7 W7 d - char *dmabufsrc2 = NULL;4 N5 J1 Y" ?( x1 J) n0 W' q
- char *dmabufdest1 = NULL;
7 X) b/ r j% D' f6 [. x - char *dmabufdest2 = NULL;" b, |2 x; k* K4 H U6 \ S7 G
! p; N+ [+ A) J4 W1 E# V+ m( e- static int acnt = 512;( T% i0 }+ [: q
- static int bcnt = 8;
' s; w" J- _! u+ Q# ~ - static int ccnt = 8;* b& B. O/ J% S
- 8 C) A3 o- ^8 u# r
- module_param(acnt, int, S_IRUGO);
; Q0 r' Z0 b |: F - module_param(bcnt, int, S_IRUGO);; D+ Z$ s* F' S* d5 P! G* o5 C2 a- f
- module_param(ccnt, int, S_IRUGO);
复制代码 . ?: D) K7 I. g; l2 s: w7 d3 d
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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
# c0 L. U7 Z* w( D" Barm-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 d0 _" i' \6 y5 R 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。* y% K; C/ t( z" T* j+ P: f% {
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