|
|
本帖最后由 yyj 于 2018-1-30 11:01 编辑
6 R5 I1 o$ P- q( k4 U4 I2 B- [code]EDMA sample test application3 f' a- b) O" ?, T
- /*5 I& I a2 v$ b; k* V% A- _( ?8 i
- * edma_test.c/ e& J- o" j3 u G3 K
- *
) c% b; ?+ t, N1 D4 } - * brief EDMA3 Test Application
' k. Q# s( t& ~# G2 I# p - *
6 n* G+ L0 n; F9 i4 ]: H' v - * This file contains EDMA3 Test code.
3 _1 ^8 @ R: R' | - *4 B3 R7 d0 S7 \# j
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
2 f+ b+ B' t" l _% w6 A - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
: p5 h8 p3 Y5 @$ Q( M8 h - * TO CHANGE.0 L' l' n t& F/ L
- *: E6 Q% K8 X% G1 K- O6 i6 l
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ e0 ?' _2 n {& ^# I p
- *. d- _! f1 b" I" ^
- * This program is free software; you can redistribute it and/or
4 F: h n* @0 a# R, Q) W/ v - * modify it under the terms of the GNU General Public License as
4 ]! h6 h$ t$ F# R r+ k - * published by the Free Software Foundation version 2.
; H' S9 s; P& v" ~7 _2 N, i9 |+ l - *
7 T; m7 I( U8 a" ^7 _% K - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
& }! M) F. X7 R/ f; d9 Q - * kind, whether express or implied; without even the implied warranty
- t" x4 ^( \7 n- b, y - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
" E* }) X+ q2 h - * GNU General Public License for more details.
4 u7 [. N! I2 a" ^, \: a - */
! w' ?0 O& Z! m* X - ' }1 H# H+ b6 A; y
- #include <linux/module.h>
. h2 v9 S5 f% o8 l: N" F - #include <linux/init.h>" I5 V# X& M0 s; v1 J) d
- #include <linux/errno.h>$ F/ l8 a( P$ }8 C) a: i* H9 u5 u6 `
- #include <linux/types.h>
0 ]. Y9 z- x: M# ?/ _7 v8 s+ ]0 p - #include <linux/interrupt.h>
# W9 [5 e' r$ B7 {& ^1 u - #include <asm/io.h>; G0 i& ^, H' m# H* e/ ]
- #include <linux/moduleparam.h>
5 ]& s m) m2 m% p3 j - #include <linux/sysctl.h>4 {9 R" G: @8 M7 \
- #include <linux/mm.h>6 C8 Q1 k0 o: o X$ N7 p0 ~3 n
- #include <linux/dma-mapping.h>
& S9 n) O: [& I6 F) Q) z8 j - 3 f7 T7 B$ ?$ W% x" w7 L8 w+ n9 H
- #include <mach/memory.h>
3 N0 I: V9 N4 Z/ L2 M# L2 Y5 I9 K - #include <mach/hardware.h>0 K+ u+ C @' S4 O, j
- #include <mach/irqs.h>7 X6 \' n; x E2 E1 s$ t4 U) s
- #include <asm/hardware/edma.h>, A9 `+ y8 h3 a* V
- % W) W6 q7 u& e1 g9 _4 \
- #undef EDMA3_DEBUG: V4 V( ]) v2 F+ V- T
- /*#define EDMA3_DEBUG*/( I/ S0 }* m6 X
- / W: |4 d9 u1 s+ b
- #ifdef EDMA3_DEBUG3 K2 x, o; [2 B( w B
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ j2 W3 h" ^% A3 m0 x+ ?1 M
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)* r0 ?4 ~4 \0 O$ g5 N6 e' |
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
& O1 s; @7 K2 D/ f - #else' o8 j) e" \0 m A- N
- #define DMA_PRINTK( x... )
1 G: ^$ X. f6 Q - #define DMA_FN_IN
) N0 ?2 S: V6 `: S! l: T0 i - #define DMA_FN_OUT
* H, T& R2 P0 ?" X- A - #endif
$ t9 e. v5 T9 {+ y+ E
q9 k# `& A5 f1 Y- t4 c% b- #define MAX_DMA_TRANSFER_IN_BYTES (32768)% m+ E* Y) f' d( y* V' q/ Q
- #define STATIC_SHIFT 3% ^6 F2 p: b; x6 u! k: {
- #define TCINTEN_SHIFT 20
2 z# d$ x9 K2 H% w - #define ITCINTEN_SHIFT 21
2 l% b/ @7 f, N$ c$ }6 ~ - #define TCCHEN_SHIFT 22# M' t9 `0 q% B6 Q5 s
- #define ITCCHEN_SHIFT 23
9 l+ j& Q, E) z9 a, A" x& N
7 a: ^3 A. T- E1 _- static volatile int irqraised1 = 0;+ e/ w- K: L% Z9 @; _
- static volatile int irqraised2 = 0;
' ?* _ j8 \7 X9 e9 V2 @ - # Q& z- @& V) E
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 Q* t6 X- E/ Q( b8 L
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
( M7 }1 e) k! U l8 v) N9 { - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
5 w8 S$ V: ]; k) S - 2 H9 [- P: Z4 C N; Y$ ^' }
- dma_addr_t dmaphyssrc1 = 0;
* V: N/ M6 Q0 Q1 C7 P/ S$ U& e - dma_addr_t dmaphyssrc2 = 0;
- u' q/ o% W( m" u7 R8 n/ ` - dma_addr_t dmaphysdest1 = 0;1 Y' s3 [ E& y- }' K: @
- dma_addr_t dmaphysdest2 = 0;
; n$ H/ b+ _/ l& g
( u) h1 `5 e$ f3 h- char *dmabufsrc1 = NULL;* ?* c, T7 }5 R5 z- i0 y
- char *dmabufsrc2 = NULL;
0 D5 i- d; N: X8 [* l' D+ c - char *dmabufdest1 = NULL;; ?: |& B2 Q7 l8 @
- char *dmabufdest2 = NULL;
, u8 u2 r9 |6 C/ x3 k% }' Q1 L - & X+ \1 W% {) N" g" w) Q) n
- static int acnt = 512;5 Q, n& U. \' q. _; y% J& v9 @
- static int bcnt = 8;
* o( z" T- {6 Q* i( f8 s - static int ccnt = 8;
) |5 O+ }/ v T- M3 {; E: `' ?1 D0 r* L
8 C, }" h+ a; y3 z: ^, s6 S- module_param(acnt, int, S_IRUGO);% [- E8 s7 v1 k2 P1 i$ _
- module_param(bcnt, int, S_IRUGO);
6 D7 _( ]6 \9 b7 {" _ - module_param(ccnt, int, S_IRUGO);
复制代码 0 P" K( ]0 c9 ]3 g
; j2 \/ b; q# l! C& X* 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
/ a( d( @% @, r0 e+ A: {' 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。 w5 w8 S6 n+ l, Y7 C
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
3 ^% f$ S( e) z( ^, u, q; s7 @( N
( [/ N- B0 Z6 w _3 j% a) X+ J9 e! r) i; L( M
|
|