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本帖最后由 yyj 于 2018-1-30 11:01 编辑
& W' c# |+ H1 f% S6 |- [code]EDMA sample test application# | V$ a1 i; u$ v, H
- /*
& e4 m' e" k$ q2 M9 q( i r - * edma_test.c$ ^# [7 _+ o2 \* G4 P) N. O
- *9 `6 i3 T+ V1 d$ ]4 ~" T
- * brief EDMA3 Test Application
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: k$ l, F, [7 G2 L- F* | - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE# q4 p4 D$ U( m! x% \
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' `- M$ M& P1 B" [
- * TO CHANGE.3 z3 R: s. F3 E/ F
- *' l9 v3 X/ P# w
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ n4 n/ x9 J8 ]0 O- x) F/ V* o
- *
9 h+ S) W% ]* i, F8 m; f, a* H, ~7 x - * This program is free software; you can redistribute it and/or$ H1 ^( y4 j" O# i) y
- * modify it under the terms of the GNU General Public License as
- @, c2 Q X3 z/ \0 r - * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
/ @8 u5 l( H. v- ^9 N5 i - * kind, whether express or implied; without even the implied warranty
( W- F ]7 R. j! Z - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
, x( l( o) K* p - * GNU General Public License for more details.3 { j. V: b# i
- */
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- #include <linux/module.h>8 |# X N5 t( L0 b+ X
- #include <linux/init.h>6 x4 Y! u5 Q# D$ ]( s
- #include <linux/errno.h>% ~7 u. L& G! l' K" [: B
- #include <linux/types.h>0 N3 C3 O, N0 S% x
- #include <linux/interrupt.h>
: R \' s, m# q& ?" I5 r+ q7 I - #include <asm/io.h>
0 g& x5 }( I* {# z# u: O0 y9 i: p - #include <linux/moduleparam.h>) [2 m" Z& d: U8 Z+ M0 s
- #include <linux/sysctl.h>
0 a3 `) ^4 n$ Y8 O9 f - #include <linux/mm.h>
, q% ]: ^ x8 n* {; \, H6 w. c6 O6 S - #include <linux/dma-mapping.h>( ]; n7 _. N# j
4 H2 y4 R1 R @) M/ N- #include <mach/memory.h>+ P& s+ n- @1 ]0 ~( W' b
- #include <mach/hardware.h>
: s1 `1 W. w! |% v0 z - #include <mach/irqs.h>
1 r/ }% F' R6 d* A2 @% a - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
' u3 j/ I4 h0 L- [* X& C& s - /*#define EDMA3_DEBUG*/$ H# m% m* z, v" I/ ?& K3 b& B& b
- . d" _+ s: q3 k# N# B! c
- #ifdef EDMA3_DEBUG
6 b r2 F7 U. a2 } - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
. a6 a; W4 A& [6 Y% B - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); M1 l: v/ r; q: F. `) C( k* {
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! i; z. o: p) ~0 A' w1 |
- #else
+ D$ F+ C% @ J8 N - #define DMA_PRINTK( x... )+ y+ h: }: I. r$ Z1 M0 |
- #define DMA_FN_IN
2 b1 @" _3 [9 q F# D5 ?% w; S6 w- f - #define DMA_FN_OUT
( T* @$ I4 O4 D n# E" _ - #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
8 b9 u% p) G- D6 ^' o - #define STATIC_SHIFT 3
" K# d# u: `) g- }6 Z3 c; x - #define TCINTEN_SHIFT 202 f% T1 f X9 P6 U
- #define ITCINTEN_SHIFT 216 w6 ?4 E5 |7 |3 Z, J
- #define TCCHEN_SHIFT 22$ u# ?- F- M. H
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
/ `2 ?% @( v3 @9 o+ \ - static volatile int irqraised2 = 0;9 p: ~+ g4 t, G' _
- Y) p1 N P2 Y+ \- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 ^* k. W; [6 P6 x( Y7 D
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
! D1 }$ S$ O- Z$ N `7 R6 ` - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 N3 R% d7 J1 S' ~$ X% I l# H
- ! Z; r2 l$ D& g
- dma_addr_t dmaphyssrc1 = 0;; B, V' ?2 n2 L- l7 p; m$ _# \
- dma_addr_t dmaphyssrc2 = 0;
# L$ H" t5 v8 }! N - dma_addr_t dmaphysdest1 = 0;
9 [' J$ b, b, G. s/ {6 k5 H) p - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
) r4 H4 f$ N) b; N ~# T6 u; K2 ~7 h - char *dmabufsrc2 = NULL;
% I2 ^; p& A3 H& q7 o: J# P - char *dmabufdest1 = NULL;( G$ i5 [9 C* [9 y
- char *dmabufdest2 = NULL;
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- static int acnt = 512;$ ~$ @9 O: |2 [9 Q( F: i
- static int bcnt = 8;1 |7 E! H2 S7 v& n, M- ?9 F
- static int ccnt = 8;& ^0 z+ |- K: C
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- module_param(acnt, int, S_IRUGO);' v9 s4 P! {# F# p5 @5 y) ~
- module_param(bcnt, int, S_IRUGO);8 W+ E: x/ ?9 S8 v
- module_param(ccnt, int, S_IRUGO);
复制代码 4 N S' K" j* ~1 Z* n
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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+ e' v/ I/ W4 m4 G! Q) o
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。
$ S3 F4 u: `2 ?8 F; K/ e" e 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。1 N" k3 }8 G( n9 i: s5 }2 R4 h/ A c! I
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