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本帖最后由 yyj 于 2018-1-30 11:01 编辑
7 K! z- G# N( r: @( ]( ~5 f- [code]EDMA sample test application
8 k, a' j6 Y; V, f8 B - /*
) S6 r5 k5 o' b4 [! ]: |7 I - * edma_test.c
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- * brief EDMA3 Test Application& i7 v8 x4 }, z/ j, ^. v
- *
/ k0 q, m/ n4 [ - * This file contains EDMA3 Test code.! y5 d" F: k! a7 w4 @+ r' i
- *
4 P, o( }$ N% y1 |* ? - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: ?$ ^" r' q/ r( [
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ y N- W9 H0 P) X1 P- s% @% ^
- * TO CHANGE.: N( W- B: A' \0 i; i, M
- *) N$ C/ O7 E9 l7 O
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
0 y% u/ ~1 N" E9 B: r - *
p% E! T. r, _1 i2 y" ~ - * This program is free software; you can redistribute it and/or
( @9 h5 I8 |& t - * modify it under the terms of the GNU General Public License as* @& q( k1 B" ^8 R
- * published by the Free Software Foundation version 2.9 T. v) W2 u( P. | n+ v
- *
" \# S Q; m2 p4 W6 D: r e6 G - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
/ E# A. z9 a- P7 m' n$ ] - * kind, whether express or implied; without even the implied warranty
7 X5 O5 \- ]" G+ k' j# c - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 K# Z& ]! }/ I2 _/ W% X) n) u
- * GNU General Public License for more details.9 K9 s( I! j5 i/ {
- */7 {8 }6 S n/ S n9 V$ t& v
- 7 o- J% w9 j& a9 u
- #include <linux/module.h>
- e( r. P6 ]2 o0 E; n) y8 ] - #include <linux/init.h>
: m$ R+ l" p1 D9 w3 J7 b - #include <linux/errno.h>% P8 z' J- _) F0 T1 _
- #include <linux/types.h>
' ] y" [5 T& [ R- F$ w - #include <linux/interrupt.h>3 s. I1 `7 c& p) @9 O
- #include <asm/io.h>3 t7 q! N% Z0 \4 Z% g0 V0 y
- #include <linux/moduleparam.h>
$ K; e# o* U, `/ R) D7 \/ v. o - #include <linux/sysctl.h>
8 F3 A# W* n1 y4 G+ |8 r- J - #include <linux/mm.h>2 \! ]4 r* L& D. Z2 @
- #include <linux/dma-mapping.h>
# _5 z1 x1 ^# h5 t: C# @; D) I9 V
2 L4 h: { I( w# u* Y5 W% S b- #include <mach/memory.h>
6 ~1 f% F1 T( d: L5 @0 @' L3 @ - #include <mach/hardware.h>
+ c0 j, x+ j0 d! r% q - #include <mach/irqs.h>
' U5 i. v' i- `$ { - #include <asm/hardware/edma.h>
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) @1 h% j4 [1 j9 b g/ v1 O- #undef EDMA3_DEBUG! }2 P" d& L8 d
- /*#define EDMA3_DEBUG*/
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8 ]# g1 b$ d/ ]% j, ?, `- #ifdef EDMA3_DEBUG2 ?6 X- T* {" z4 t* ]0 i
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ \* k# X# e$ B1 H9 x# I* e' X: N$ X2 N
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# u. ?' j2 E; C( N$ {0 D
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ {1 y* y3 j z
- #else
$ S1 Y* ^8 X- N - #define DMA_PRINTK( x... )4 W7 g# Z' h" O9 Z a/ Z
- #define DMA_FN_IN. o7 Y; q7 H, ~' g
- #define DMA_FN_OUT/ B9 I8 K9 v4 B3 l4 P1 p2 C; v
- #endif
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1 y$ F/ w- P# q+ a$ T& M7 s- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
( [3 K6 A0 J7 M$ ~5 E - #define STATIC_SHIFT 3
W! r: X- I/ }; i/ a8 m: d - #define TCINTEN_SHIFT 202 B" C8 ]6 I* x* X
- #define ITCINTEN_SHIFT 21
, ?- I a# r$ h+ ?) E - #define TCCHEN_SHIFT 22
' v- X8 q6 A! g2 s: T5 ? - #define ITCCHEN_SHIFT 23
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, ~. W6 y0 l) G# d8 w: g- static volatile int irqraised1 = 0;
* ^4 e- E M+ g$ `4 V - 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); y* b4 M! \5 j: Q
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- E% ~) q9 Q; z' ~. g2 [0 p, l5 u
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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- dma_addr_t dmaphyssrc1 = 0;6 C3 d# x8 g+ n2 B9 \- S
- dma_addr_t dmaphyssrc2 = 0;9 A+ D# G0 x d: [, r
- dma_addr_t dmaphysdest1 = 0;/ u6 K1 C7 q( s2 d0 h% R( r
- dma_addr_t dmaphysdest2 = 0;
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+ j5 f/ ~& `% T3 N- char *dmabufsrc1 = NULL;
2 Y$ p' R. y/ M - char *dmabufsrc2 = NULL;' Z2 b/ Q3 o, V, X3 q4 ?6 S
- char *dmabufdest1 = NULL;
; e2 c9 l" } l; `4 e5 y - char *dmabufdest2 = NULL;
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- static int acnt = 512;
- y. u1 k" [7 W% W) f9 _ - static int bcnt = 8;" H8 r$ ~5 L" }3 r( `/ A7 O
- static int ccnt = 8;$ b3 m; R: K: u7 ?; x: V# W8 B
_" `, D* e* C' D! s! N; b' i: M- module_param(acnt, int, S_IRUGO);7 z" v3 o9 s2 j/ `# T& W
- module_param(bcnt, int, S_IRUGO);/ F/ o$ w! D, ^! I0 s
- module_param(ccnt, int, S_IRUGO);
复制代码
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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. L1 v" e* K/ 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。
. G* g3 h- D' U" K+ x 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
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