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本帖最后由 yyj 于 2018-1-30 11:01 编辑
$ u# Q! @# [7 N; z% a- [code]EDMA sample test application
! D) |8 d/ S3 f& I9 `4 l. t& M - /*
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- *
' M# Z+ K4 U! }0 T. e- O" } - * brief EDMA3 Test Application5 a9 ?7 v1 v+ W9 j! X, C9 w3 t
- ** Y: Q+ F/ q9 Z( X# x
- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- }6 Z( `5 d: Y5 K, v* n
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
0 a8 T1 d* v& I$ d: } - * TO CHANGE.
' q9 R$ o' R* T0 d8 i - *
9 a* J: c! t6 l3 s% D3 D - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or3 {5 c( L. b7 _$ R8 U! U
- * modify it under the terms of the GNU General Public License as0 F1 \# V; f$ t. k
- * published by the Free Software Foundation version 2. l: y- A# [" A2 Y2 }% l
- *1 B& ^, H) u' k
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
2 J& k. b- u) b* I6 F& z: z/ J - * kind, whether express or implied; without even the implied warranty0 l7 X, Z; R1 L( g
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 U- E9 h4 F' M% l% P
- * GNU General Public License for more details.
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0 B$ l: z3 L& ~5 i# D. c- #include <linux/module.h>
" I- `4 i- D; r) q; x3 A - #include <linux/init.h>
4 Z: c4 d9 l6 }# |3 Y& y9 M+ A# Q0 b - #include <linux/errno.h>" @2 w* C/ b$ s, s
- #include <linux/types.h>! v" G# `, Q; m; W. s0 I% W
- #include <linux/interrupt.h>( m$ }2 p1 w2 F
- #include <asm/io.h>
1 Y0 G, w* N; c6 \9 y - #include <linux/moduleparam.h>
% v, y6 f9 Q* i4 s0 A) m - #include <linux/sysctl.h>0 n+ Q ?; b. M9 t$ t o( x
- #include <linux/mm.h>
7 o! I: [6 \; u! t- s1 H- Y - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>- B1 C1 @6 T4 g& A
- #include <mach/hardware.h>! o; ~; G1 Z$ r1 H
- #include <mach/irqs.h>% @0 U7 J9 J1 [- E
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG1 `! T/ T( T. d* T" n: U
- /*#define EDMA3_DEBUG*/) U4 t) }5 F: w) }* [" N4 x R! S
" v" x) K) q9 ^' m, Z- #ifdef EDMA3_DEBUG, o# T9 h" Z6 q, |8 _$ [6 ^
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 L. ^* ~) {, Y* N$ V3 e6 g
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
4 z) r/ j# {6 b' `7 Q - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
' e8 g; Y! C6 u* n - #else9 A4 D4 U& @) @
- #define DMA_PRINTK( x... )
: X$ H: s9 J/ o4 _8 i7 d* ]% }% [ - #define DMA_FN_IN* v( Y* F: r4 w
- #define DMA_FN_OUT
- C) B l- K* M! O1 U" W - #endif
- P$ m6 h x( _; d( I: T+ m - 3 b2 C) p9 b. I8 y: d- J7 q6 b
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)# |, x- h7 L4 Z
- #define STATIC_SHIFT 39 @' W* X/ ]7 w6 A- g% z
- #define TCINTEN_SHIFT 20
5 |) Q6 T, R3 n j - #define ITCINTEN_SHIFT 21
8 ^ b: Y) J+ L - #define TCCHEN_SHIFT 22' K- v8 n; l2 z* `6 J; Q3 r/ @
- #define ITCCHEN_SHIFT 232 J, T8 b1 C+ E' F9 `7 f
- , D& |0 ~9 q7 D2 V$ q& a4 j
- static volatile int irqraised1 = 0;8 X; z% t" X; E6 n* w; T
- static volatile int irqraised2 = 0;: \2 C0 f) @+ h [3 O0 G
- ! C) c( F+ [* d1 f% L! n; m4 G
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% v% @. I( C( R( k! g0 m. i
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
. S4 }% j1 x8 }1 L* N$ h& ]' v+ K0 i - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) f( M6 K; ~" k
_: P6 N" A2 l4 ~- dma_addr_t dmaphyssrc1 = 0;. `/ N+ ~3 Z2 q7 I2 v9 W& H
- dma_addr_t dmaphyssrc2 = 0;
9 H1 F. g% }" \3 R2 w - dma_addr_t dmaphysdest1 = 0;: W: B2 y( C) M" a% i& L; r, W o7 n
- dma_addr_t dmaphysdest2 = 0;* T0 u9 l5 y- f* E
- 3 {( Q1 e2 r/ ^2 ^, u
- char *dmabufsrc1 = NULL; N& u+ B( V7 I& A' I
- char *dmabufsrc2 = NULL;. z W7 E9 A3 z k
- char *dmabufdest1 = NULL;5 [4 D8 [ f- D7 l1 Y6 I) F5 } q
- char *dmabufdest2 = NULL;- v- w8 Q# Y& n) r d1 a' z
7 H8 \, n( C7 C* e5 D/ e4 b- static int acnt = 512; v$ f' w, R7 h" _6 i
- static int bcnt = 8;* W/ ^8 F0 I/ x
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
& m- L- Q# B% p, P, \ - module_param(bcnt, int, S_IRUGO);
8 O2 w: o4 w# {1 B" G5 E, } - module_param(ccnt, int, S_IRUGO);
复制代码 9 t6 E7 w' `- L
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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; ~8 R* i! L) {2 p
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。
& J; z9 d6 h% 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。7 E* c* _2 U$ o" T& u
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