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本帖最后由 yyj 于 2018-1-30 11:01 编辑 $ Z+ S" l6 H* }, M0 W' n
- [code]EDMA sample test application7 I- M* T) U( b) t& I" j
- /*
7 K4 Z; g4 o& o: { - * edma_test.c
8 }2 Y- f# Q2 ? b - *: p2 d7 }5 X" n+ n; J' A* Y/ j
- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.
2 X3 x# ~4 P0 U - *
+ @# N8 Z- _2 C! x0 }" D" F - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- a! d8 d; _7 b: m# h% c7 _+ t
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
: A5 f% z1 J0 }& x7 N - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! ^# G/ J( V6 N0 v+ d- d
- *% S, I7 _0 K+ k8 J+ F
- * This program is free software; you can redistribute it and/or& [8 L5 q/ b; v. s5 O/ b
- * modify it under the terms of the GNU General Public License as
# |' B2 q+ @" |. |1 Q5 E- C4 D) ? - * published by the Free Software Foundation version 2.+ I0 h4 f, l1 {; B( o: K
- *( z- t* C3 w" m/ ^; {( p& q
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
4 b0 n) R7 y& V) L - * kind, whether express or implied; without even the implied warranty
' j" ?- {' B( h9 y2 @4 l* c - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
6 a; X F7 h- x& c - * GNU General Public License for more details.) C. X! b$ f0 D$ r1 [
- *// j/ E/ @6 Y! c$ P* ?# |) R
) x, l& Y% z% {6 _! g- #include <linux/module.h>
. w" @7 m4 P7 m - #include <linux/init.h>
* r6 M- M1 ?- {/ P - #include <linux/errno.h>
/ N5 {& R/ m' s0 c1 d) \ - #include <linux/types.h>
6 H4 v! t3 m: `: {" o2 Y' D6 X - #include <linux/interrupt.h>$ w, j. T' }" c% M d2 P
- #include <asm/io.h>7 j/ o% L4 t, W8 i) _
- #include <linux/moduleparam.h>
" C9 O+ t; \/ V0 w1 J( N2 z - #include <linux/sysctl.h>
8 n, m2 V' d) f# \( [5 p# P - #include <linux/mm.h>0 o! E% I- m& W- u& }
- #include <linux/dma-mapping.h>
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. M0 `5 u l/ m+ c2 q( m- #include <mach/memory.h>5 E& i/ A: d, N
- #include <mach/hardware.h>
9 e s3 f0 f7 p: w d3 A - #include <mach/irqs.h>
# g0 ~# e+ d3 T4 O7 L - #include <asm/hardware/edma.h>' C4 `. q' }8 A/ G# H5 f- s/ C
- n! F0 ]4 G+ Q- #undef EDMA3_DEBUG
. X8 \1 w- U1 F& { - /*#define EDMA3_DEBUG*// s) I4 Z3 |" q$ v/ D
- , @% {" Q E- X( V3 o* F, t
- #ifdef EDMA3_DEBUG
0 _& T. [( n% i X0 j. |6 j' U - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
g; `& F3 J9 i - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) I$ w9 ?; g* h
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
N2 ^! J2 V p$ M$ e4 F: v; y6 Z8 K" ] - #else
8 Z* G, o" j' B. O0 ^ - #define DMA_PRINTK( x... )
G5 W7 s/ {! d A0 Q - #define DMA_FN_IN
- W: G6 L5 x3 v - #define DMA_FN_OUT4 z+ @" X% n* Y+ e
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
: ~1 J2 _: I- L3 B* P& E - #define STATIC_SHIFT 3
, `5 S& T/ a ?7 T/ M - #define TCINTEN_SHIFT 20
* b- A y5 `+ J - #define ITCINTEN_SHIFT 21
j, u4 N8 [& W* u - #define TCCHEN_SHIFT 22
3 w2 _# S6 l4 ^1 \) @3 n* Q. T2 f - #define ITCCHEN_SHIFT 23 h n" N& R# ?
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- static volatile int irqraised1 = 0;
5 V, V) k& h' g& R- ? - static volatile int irqraised2 = 0;+ B% r# @; H" x, R J; r; O" j
- " H9 ]* n/ F% h7 C3 I
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: j J" r* P( t9 C$ _+ q
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& V0 p! H$ G* X: ?8 n - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 V! R! r3 ^$ u
* [% G5 A9 j4 E# y% ?$ w* V- dma_addr_t dmaphyssrc1 = 0;
& B7 b( } x9 @% [& ? - dma_addr_t dmaphyssrc2 = 0;
) ?$ m9 a+ H' q# w" M - dma_addr_t dmaphysdest1 = 0;
. X: n, [4 w8 [2 b) T - dma_addr_t dmaphysdest2 = 0;
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! f: [5 q6 u1 K- char *dmabufsrc1 = NULL;$ K. H3 U" ^( y6 @9 B. C
- char *dmabufsrc2 = NULL;
3 R( @; M& E) [* x3 j - char *dmabufdest1 = NULL; _+ e* ^- a+ j" w2 ^$ X7 }
- char *dmabufdest2 = NULL;( H# G8 [8 ?0 \- {& V
- J( q* H, @1 s D- static int acnt = 512;
( I& _. v4 n2 p( Y! r9 O) g+ n - static int bcnt = 8;
! V" K7 O' |$ n8 a' ^ - static int ccnt = 8;9 |' o+ P' @! m7 {, O
1 I0 i% p0 ^3 e9 v0 V$ W7 q @ P- module_param(acnt, int, S_IRUGO);
. n, v+ x% C* e - module_param(bcnt, int, S_IRUGO);1 k1 V0 u4 u. ?/ C$ e0 m
- module_param(ccnt, int, S_IRUGO);
复制代码 & [6 y2 \& N4 N8 O! v; [; d g! A0 v! p
& R. s) r3 y, |9 t/ Z9 a 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
+ [+ I( k# l" z$ t) ~! varm-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。
" Y% _. w0 ?, t) g) B 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。" Q4 [$ g B+ I0 u% f8 A
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