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本帖最后由 yyj 于 2018-1-30 11:01 编辑 5 t4 y7 T/ V1 D
- [code]EDMA sample test application. M6 s2 |, f! _- G7 i6 Y7 Y
- /*) U" n$ d5 D! p9 x) E O$ T
- * edma_test.c6 n) O. v! N0 t
- *4 {0 S0 W8 {! Y& q! n7 B# E
- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.& h) R+ E! V5 d+ n: n
- *# {2 L. }) l$ ?& W
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
8 ?$ {8 l, Z. ? - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
! g! l! I+ A' f- R - * TO CHANGE.- p+ ?5 \5 I) v2 R7 `
- *
8 [6 d& Z- {. } - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ `! q: H! t" L5 |4 X' z0 Q
- *% G. s3 x- d+ b: ?( m1 {9 {/ h* l
- * This program is free software; you can redistribute it and/or
3 {1 \9 l6 s# M7 A( m8 g' { - * modify it under the terms of the GNU General Public License as
" ~9 r2 C0 Q6 y - * published by the Free Software Foundation version 2.
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' q0 ~ `% U, @( C6 N - * This program is distributed "as is" WITHOUT ANY WARRANTY of any2 C4 E* `8 T! y) G
- * kind, whether express or implied; without even the implied warranty& O/ g0 x' m6 j
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, h. I: J; Q5 j: G. Q* P1 W, A
- * GNU General Public License for more details.
" k, u" u! K9 G3 v$ a; B& k - */
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0 T& }: o/ P+ y4 y1 E% J' X- #include <linux/module.h>& t) a0 N" |' j* z1 F, L
- #include <linux/init.h>1 ~8 g" }0 ]5 W$ P
- #include <linux/errno.h>
5 s, [" k4 \4 Q: f; K4 t. I1 x5 T% l. R - #include <linux/types.h>
, A8 i [, i0 M$ t+ b& z) S- ~& @7 t/ r5 j - #include <linux/interrupt.h>" ?" p K* R% h; R# u- x
- #include <asm/io.h># p& m# X W" ~! {
- #include <linux/moduleparam.h>
' D* Z6 c' K# ~ - #include <linux/sysctl.h>
, J. C4 J: H$ f* S1 O( f8 ` - #include <linux/mm.h>8 p. S: D% O. q$ v3 h8 f y
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
7 W# ?! h$ T# q$ B" I( K( }9 z - #include <mach/hardware.h>
! p$ @' |0 M/ L( M - #include <mach/irqs.h>
5 C! U, ^3 W! A. i7 ?" G E - #include <asm/hardware/edma.h>7 u& E0 G- o/ p2 I! l+ X% m
/ L+ v2 _* P* o& E. w7 Z- #undef EDMA3_DEBUG
/ p: `6 b' @ e: Q8 F# @5 W( p% M - /*#define EDMA3_DEBUG*/+ t _ h: N; Q+ d: C
- 4 r' e1 v8 M2 H- u
- #ifdef EDMA3_DEBUG
+ T# W6 l5 S4 A; m - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
$ _9 p/ [/ K5 t3 E/ K - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
2 C4 \+ ~5 S* S4 T0 X5 B3 e - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
0 g3 j/ T% b- |$ N. @ n/ x/ q - #else# m* E4 P/ l: Y) l8 w- {1 A
- #define DMA_PRINTK( x... )# p! U/ _* a# \- |
- #define DMA_FN_IN& q& N4 j/ y" x& \9 [3 d
- #define DMA_FN_OUT
5 @8 a6 G) k/ G8 V( O/ V# W - #endif) p; T" T7 j7 B9 {
- : x0 R/ E2 [! E9 h! ~; \2 F
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
0 a& C) T4 j& [6 o# g- a4 L - #define STATIC_SHIFT 38 X. B, N( G, v0 I% E
- #define TCINTEN_SHIFT 20/ _) ?# r) ^. O0 a% T* ?) x
- #define ITCINTEN_SHIFT 21) x8 l; S, i! E! s9 q: \9 u$ ~; T
- #define TCCHEN_SHIFT 22
5 r2 y9 D" i4 z$ \$ W9 s8 R - #define ITCCHEN_SHIFT 23. {4 B! W6 W8 P- ^' @! Q% u3 i
% n* [/ D, K' Z t u9 N/ v- static volatile int irqraised1 = 0;" x! W* i9 }- h5 ]7 \: T
- static volatile int irqraised2 = 0;
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: R5 _) E$ [9 ^- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: t) z/ @% ?/ ~ Y z' b3 q: f- h
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
# L2 ?) ~' ~" ?" I - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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5 [* N' d! u M! O- dma_addr_t dmaphyssrc1 = 0;
* a/ g. _. [7 ] - dma_addr_t dmaphyssrc2 = 0;
4 s/ m! [' N& }. L8 \5 u$ J/ J' Z - dma_addr_t dmaphysdest1 = 0;: g5 R k7 R! P: [% Y Q q' {
- dma_addr_t dmaphysdest2 = 0;4 L" t$ D( w5 G* r
* |6 ~! |: }, k8 X: `- char *dmabufsrc1 = NULL;3 K5 e) b2 o% \6 c% q
- char *dmabufsrc2 = NULL;
$ s S% `% u0 m. K; m, N5 _ - char *dmabufdest1 = NULL;7 p! X' V9 n5 p3 W5 c) U
- char *dmabufdest2 = NULL;
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8 J9 ~' d0 W6 w- static int acnt = 512;( L1 a/ B7 C: t
- static int bcnt = 8;
/ [" @6 F% Q: k0 v6 A" u" d - static int ccnt = 8;/ [$ v4 b: a+ U. J, j( b
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- module_param(acnt, int, S_IRUGO);
7 p) a) t9 ^! u9 R4 n+ m - module_param(bcnt, int, S_IRUGO);
+ l/ m; `" j: _9 s& ?1 _) W0 u - module_param(ccnt, int, S_IRUGO);
复制代码 ' \) C) N, o- }4 J" m, ^+ r: C
- D" e" v3 `& a$ Z 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 J* M% C, }5 t9 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。* m% \8 c+ C# M, d( e6 J
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。 T# t" ?4 U; |* k" `
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