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本帖最后由 yyj 于 2018-1-30 11:01 编辑
- H3 I" ^3 u; `- F0 a- [code]EDMA sample test application0 v' k/ O8 L" H- U2 x# i$ d
- /*7 T4 T1 q/ e( I* B
- * edma_test.c% E- g; \% v) Z
- *
5 Q; ]) [' f2 v! {" ] - * brief EDMA3 Test Application9 c7 J' P- f* T+ ?* T
- *
" ?8 F5 I$ H( d) g, U - * This file contains EDMA3 Test code.
2 O* I) F" }* x: u# n, c& U/ f" f - *
R4 h" O+ j7 P - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE1 |: B% u& T8 j
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
4 \" i8 [! E- i8 s% |7 F+ C - * TO CHANGE.
& I4 D2 v' C {6 b - *
/ D0 M5 m9 S& ^+ J - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
0 d' ^+ ~! G0 F4 d$ J% ] - *9 J c* Q8 |$ _- D1 Q8 x# H
- * This program is free software; you can redistribute it and/or
5 e. g5 H5 F2 {- e1 Q - * modify it under the terms of the GNU General Public License as
* p0 j1 }& | J9 `2 F( B" \ - * published by the Free Software Foundation version 2./ q! X) }6 a$ O+ J
- *
5 V4 Q& J4 X8 t& ^8 b8 r2 _ - * This program is distributed "as is" WITHOUT ANY WARRANTY of any6 Y4 F8 T* @7 v# J) E: T2 Z
- * kind, whether express or implied; without even the implied warranty
, B- B0 C, j7 z3 k6 ~ - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the0 ~& _4 } [ E/ u2 O
- * GNU General Public License for more details.. q5 I3 k* X/ c- Q. v/ ]8 j# y
- */4 u: [) f. T- [6 W+ G" [* r& z, D
- 2 n+ D" \; i. R, P# C" ]8 t
- #include <linux/module.h>3 |' `' V0 y- U' q- m
- #include <linux/init.h>9 T4 D. ^" @$ Y/ c
- #include <linux/errno.h>6 o' U& Q& o. U8 j9 i6 Y a( m4 I
- #include <linux/types.h>7 z# }! @! q/ |5 z5 X
- #include <linux/interrupt.h>
( X. z( p+ v3 _; s: e - #include <asm/io.h>; P! j" p. q, O P( e. l
- #include <linux/moduleparam.h>" Y1 F, D/ w D9 m. e% x
- #include <linux/sysctl.h>
5 v5 `8 I/ j4 B& J3 i) S% @& e - #include <linux/mm.h>
' g# F# A3 o: D - #include <linux/dma-mapping.h>: U2 o; W, P2 y) {6 o7 b
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- #include <mach/memory.h>" A% q& ]0 k" d1 f, `
- #include <mach/hardware.h>. c4 }& C3 D& _' S6 H
- #include <mach/irqs.h>' ~; \0 w7 L5 C" j! a! x% w6 Z
- #include <asm/hardware/edma.h>6 h0 \1 L5 g) `( s3 {4 q% L2 n) d
6 r! D# Q8 K: v8 E# A9 \0 @* I- #undef EDMA3_DEBUG
) N; _" I( p& W" n" \ t- J& T0 E - /*#define EDMA3_DEBUG*/ g" U& A" N h& i6 Y v3 [
- , C, b. v' c6 q1 ^6 E) R9 u- v- R
- #ifdef EDMA3_DEBUG, }1 i3 [0 x8 O" _
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
% p) h6 |5 ]9 b" h, Y+ J% S - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
" A9 f6 [6 Z# F8 N" v. \ - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
! w3 l) U' d; a - #else
; _2 B' b% f" R$ u - #define DMA_PRINTK( x... )) l2 V. {- b: M; ^% c2 W
- #define DMA_FN_IN. G; h3 f5 n0 r% L
- #define DMA_FN_OUT
: K* r; L9 B# A! A - #endif- X3 e6 y) h7 w# @
- 2 D; S, e1 k% C0 R
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)! j; F5 j4 A4 }7 p
- #define STATIC_SHIFT 3
l- }( ?9 \1 m# ~% Z" v" A - #define TCINTEN_SHIFT 20
, }# W; w/ M- [* U2 a - #define ITCINTEN_SHIFT 21
3 C) X& S& E* N" L - #define TCCHEN_SHIFT 22
" `1 j8 m2 @2 V% m1 a - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;, ?0 p3 z# Q4 y0 Q
- static volatile int irqraised2 = 0;
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+ b7 X1 x$ q+ p- _# S) A- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
7 n; D8 S" R4 i9 G8 e! v O - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
: n% Q8 U: w1 I& p' f+ T - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( l% H- J. V8 t, A/ H" Z5 C
# f( x D! q) {$ P+ L* k- dma_addr_t dmaphyssrc1 = 0;, E5 }0 H$ q9 v0 h8 C
- dma_addr_t dmaphyssrc2 = 0;8 ~2 w0 L( Y7 K! R" Q
- dma_addr_t dmaphysdest1 = 0;
' N4 m$ I2 ~6 _3 e. H, N - dma_addr_t dmaphysdest2 = 0;
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9 i1 V2 [2 Y4 s1 N) i; t- char *dmabufsrc1 = NULL;
+ s4 s* p! {2 Z- r, d! w - char *dmabufsrc2 = NULL;
/ R3 G) P% r+ ^# O { - char *dmabufdest1 = NULL;& y) Y; r0 I& Y+ W3 x
- char *dmabufdest2 = NULL;* C( x) ^0 I/ }1 F! x2 |
2 ?6 j0 x# d. h( j9 r- static int acnt = 512;- m9 T1 B3 X9 p1 g+ h; U
- static int bcnt = 8;( b) c+ L7 N! S, d9 ]% `, J/ i
- static int ccnt = 8;1 ?4 k6 J/ r. N% S3 e4 z4 i
- 1 b, ~# H3 N$ D0 {+ s' C l+ c/ P
- module_param(acnt, int, S_IRUGO);3 e' i8 l2 G9 Z6 ?( _7 o
- module_param(bcnt, int, S_IRUGO);/ k9 w2 Y! o3 K2 q7 P C
- module_param(ccnt, int, S_IRUGO);
复制代码 % A8 g- e" g( y( d; {/ O
! d) E, K" U ?* |% l2 f 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
f# P4 |2 e' z5 e7 V3 O5 Iarm-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。
4 U9 {- ]( [8 L3 I: y3 B) p, f 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。( i+ t9 }3 q2 a+ U: p+ o- _
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