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本帖最后由 yyj 于 2018-1-30 11:01 编辑 B1 O6 X$ z# I; r, {+ f6 D
- [code]EDMA sample test application3 b! t1 O$ t2 F9 a5 ~. N
- /*7 P$ m1 Z# e# y# k: |
- * edma_test.c
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$ m9 @+ v# _- G$ h+ d& h - * brief EDMA3 Test Application6 ]( `1 v; C k
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- * This file contains EDMA3 Test code.6 g# S) W% P- ?+ s
- *+ f- m) {9 F% W- M1 r
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE6 O; Q+ c7 i7 N; Z8 L( C' q
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. V1 e2 Q9 b$ f7 i$ g1 V2 S$ R
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 k3 K \; B* V+ B4 Q' N' y$ }
- *
% Q) e9 o! V3 x/ d( x/ e - * This program is free software; you can redistribute it and/or2 D S) U0 N) C' B8 Q
- * modify it under the terms of the GNU General Public License as
& h9 _1 x( U0 d% b/ I$ N6 Y, f - * published by the Free Software Foundation version 2.
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* e0 {9 w5 F6 z. U - * This program is distributed "as is" WITHOUT ANY WARRANTY of any% h! G) |, {$ }# b% `2 C, Q
- * kind, whether express or implied; without even the implied warranty! x2 s7 S7 p o/ W( R
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 Z. N6 t, h9 a# I1 u
- * GNU General Public License for more details.7 @) E* R+ Z2 P1 q, e0 F. |- H: ^
- */
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5 }! o# R: h7 X9 i& [& x- #include <linux/module.h>
5 g5 I: o0 M+ f6 P- l( l' U* z1 K* y - #include <linux/init.h>
+ k7 U+ A4 ^& j, N, m# ? - #include <linux/errno.h>
. M, n9 K8 c9 X, w9 ^& l: t. ^ - #include <linux/types.h>: V5 S0 X6 S$ A
- #include <linux/interrupt.h>% o$ Z7 ~0 p: r# G9 V# `6 M
- #include <asm/io.h>3 Y, A+ S+ |, Z9 ?& \* X6 z3 K
- #include <linux/moduleparam.h>
$ _+ V1 A) ?4 o/ g4 L- } - #include <linux/sysctl.h>
. w* k X- I- L8 ^# z - #include <linux/mm.h>
5 C" E2 @, J0 t" y& a3 [ R - #include <linux/dma-mapping.h>& Y6 p7 j1 a) L$ N! g0 {
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- #include <mach/memory.h>% J6 T7 G2 {) F" Y+ z+ B. T
- #include <mach/hardware.h>
* e" Z, p$ H9 l7 V; A - #include <mach/irqs.h>
7 `! P }# J7 d: W+ g6 A - #include <asm/hardware/edma.h>' f( h9 Z# v) @8 j+ h
! }) w( @: A* q( o# [9 q7 M- #undef EDMA3_DEBUG% g! L& A" h- B
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
0 o0 ?9 H. L8 z+ h- i# L3 i. I0 H - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
/ \+ K1 A( t6 P3 m" l2 F! o - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)- R" s" Q: ~3 b. F
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
1 n; e" C, r5 v8 f: L- G. x - #else) v* `* u# N+ S
- #define DMA_PRINTK( x... )
1 O# F l3 ]1 [+ d( U& G( W: g - #define DMA_FN_IN) M' D/ ?3 W- t$ I% `
- #define DMA_FN_OUT
# @5 `$ H9 @/ @3 \) X - #endif
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0 |) R. ~2 v5 Z* f- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
9 z S# A$ b# \( I2 i$ O - #define STATIC_SHIFT 3; Y4 d6 Z0 B f4 H9 ?6 o+ V; e
- #define TCINTEN_SHIFT 20
7 { Y4 j. w" I7 Y - #define ITCINTEN_SHIFT 21
9 b# a4 O* x& F - #define TCCHEN_SHIFT 22
6 `/ q7 {3 D3 b5 D/ L" K5 } - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;# f; ?7 q' X6 E1 ~5 h
- static volatile int irqraised2 = 0;+ w& |. O7 u% D) X
7 G2 C1 ~6 C& j3 P4 k! }- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ Y1 N, {7 x; u
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) c6 m5 [% u2 ?* T4 \, n0 F - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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1 `& G- v; l- D, h+ R1 C4 i1 ?# L- dma_addr_t dmaphyssrc1 = 0;# o7 w# k' R6 n1 F% o( G# g* D
- dma_addr_t dmaphyssrc2 = 0;' F4 x4 x0 J3 a- I5 C
- dma_addr_t dmaphysdest1 = 0;
2 B* n% t7 Y n$ h# K - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;% `" z' A& r" \; d9 ]& D; {* U8 c y% z
- char *dmabufsrc2 = NULL;7 s8 F; M* b3 L1 S2 h( N/ A4 G
- char *dmabufdest1 = NULL;
: {; \) q. e; \" t: _" p/ N J - char *dmabufdest2 = NULL;- W3 X; F& K- \% w4 f" z# _7 \
- 9 ~) f# c; ~3 o) n
- static int acnt = 512;
8 X& n" s4 ~+ q( p - static int bcnt = 8;* `$ F9 s1 V% r6 w+ i
- static int ccnt = 8;, I8 v+ ]7 f6 {1 Q% l5 W% ]
7 k9 ~% o9 `. O1 P+ t$ w2 f7 u- module_param(acnt, int, S_IRUGO);
% q$ C2 Q0 h T4 A2 d/ f - module_param(bcnt, int, S_IRUGO);
. z! U& k: N0 A- a: q m - module_param(ccnt, int, S_IRUGO);
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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
5 |' z" {, c3 K6 c, Aarm-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。
; i; b/ M) I( R$ g. 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。
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