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本帖最后由 yyj 于 2018-1-30 11:01 编辑
8 z \( Q9 ?0 _/ S s" s- [code]EDMA sample test application
/ ^3 r) ]+ |9 b, x" Q, c - /*
0 D3 f. x) K" p6 H - * edma_test.c
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- * brief EDMA3 Test Application* ]. ^4 u7 p! n0 P6 k3 L" I
- *. G# V5 [, R3 @; T
- * This file contains EDMA3 Test code.
, Q+ K: e, x3 z8 V% b - *
1 t1 q; l4 H8 N9 p7 e6 k - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
0 s: n+ {. e0 j% N, L, y$ _7 s7 r - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) }. J! r, z2 t" X; P" u
- * TO CHANGE.& \% O( d5 n5 p2 w
- *. N9 g4 R1 p! ?9 H4 B& p1 r
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ R5 }5 _4 i+ _5 M2 U
- */ [# a* H; T5 w+ b9 T
- * This program is free software; you can redistribute it and/or- y2 ^4 A1 r1 t4 i2 I
- * modify it under the terms of the GNU General Public License as
, L' B9 Y2 T" P2 g' R6 @0 D- K - * published by the Free Software Foundation version 2.
p& ?. a9 r+ n+ L* ^$ I - *
1 @. H. T/ R) ~2 B: Y - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
5 c) U; m4 n q E* [ - * kind, whether express or implied; without even the implied warranty
n" l$ I& }/ p+ s- l - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
7 N6 [$ f& o0 O: `4 }' R: N - * GNU General Public License for more details.# D6 h- a1 C& ], U& S8 W
- */; c5 b" ?4 V0 M" g
- 0 g m# |9 W7 f! G$ E( Q3 K
- #include <linux/module.h>! G$ {: o! Q2 U
- #include <linux/init.h>
. `! H+ V; r0 P% H* o8 E$ c - #include <linux/errno.h>
~: S% d G% u - #include <linux/types.h>1 D9 J: d& I: U Q9 l' @1 G
- #include <linux/interrupt.h>
8 ]0 C. T. O0 E6 k) f - #include <asm/io.h>
) t4 F+ h8 Z! X! r - #include <linux/moduleparam.h>
3 p) o- y% D6 _4 f5 e - #include <linux/sysctl.h>
, Y8 ?4 e. u3 P7 [- J - #include <linux/mm.h>6 |9 N6 ~" {. O7 \
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
5 g' R6 K8 ]4 E4 | - #include <mach/hardware.h>5 n8 @- i0 p4 e* l
- #include <mach/irqs.h>
V* J" Q1 c6 z7 J; g6 F - #include <asm/hardware/edma.h>5 T" j: q$ J1 o
- , H; u5 \3 p- d! z! i
- #undef EDMA3_DEBUG% r+ j5 y$ M) l b' ]0 I: I" \
- /*#define EDMA3_DEBUG*/ Y+ W1 g! W7 q! C' t" y
- 3 |5 y5 y1 @3 t' I1 D6 l- a9 s. f
- #ifdef EDMA3_DEBUG l: |7 s5 @% b1 ]' K7 G v
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
% j. K3 K- m; P5 {9 Q) t - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ v9 p2 {3 [* D0 `1 Z) z
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)9 P6 m& N, e+ K+ B8 _
- #else) e( m9 n' n3 `8 w8 ]- Z- ]
- #define DMA_PRINTK( x... )
) {1 Q# H$ U& Z- N - #define DMA_FN_IN R6 m# K, `; q6 m
- #define DMA_FN_OUT
7 J6 S& t1 ^& I% V* J O8 v - #endif
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' Z6 q( a7 c; _. ?; g0 r- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
# {) U# ]$ A. d5 V* h# p( z$ c6 V" N - #define STATIC_SHIFT 3& M; @* w: y# P0 [4 m6 ^3 v' S8 E
- #define TCINTEN_SHIFT 20/ q, ^& k8 G# a* C+ g4 t k
- #define ITCINTEN_SHIFT 21& x! b* ~2 E( K$ D
- #define TCCHEN_SHIFT 220 j* e7 Q' a& U0 Z/ T1 q- [. O/ D
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
, Q E( z/ F Y& p - static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
' m: M& g( d3 m! A - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) O: B# o2 Y$ W( e& Y6 @5 c - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* k' J: Y+ h! q% A9 S
- / O) I* b+ h6 p8 i
- dma_addr_t dmaphyssrc1 = 0;1 E, H; b( D* l3 z+ x' p
- dma_addr_t dmaphyssrc2 = 0;& P9 q8 N! A; g9 S$ i) K! M9 c; ?
- dma_addr_t dmaphysdest1 = 0;
7 L* s! M3 Y+ n* \1 } - dma_addr_t dmaphysdest2 = 0; W; _ N; \ d
( s1 @8 |$ R6 B4 O9 e- char *dmabufsrc1 = NULL;/ g7 I- G% P" f4 b
- char *dmabufsrc2 = NULL;
5 z$ K- f- ~1 T' \* S - char *dmabufdest1 = NULL;- O! |- U5 {% y! M- b
- char *dmabufdest2 = NULL;0 }/ X" ~* G: T, y- z
- ; T! d$ V1 L$ Z2 G, X
- static int acnt = 512;
9 m5 Q3 y) ~ `) a N( o$ i9 s - static int bcnt = 8; n+ A7 {! \3 t! G7 e3 J( ~" v$ L5 y
- static int ccnt = 8;
# d" ]; h! L5 [9 g- ^& m _ - : l7 {- d7 G, y% w: [
- module_param(acnt, int, S_IRUGO); }0 v" t: y: F }( p
- module_param(bcnt, int, S_IRUGO);
& n( z r+ B) w9 j; H. Z5 V - module_param(ccnt, int, S_IRUGO);
复制代码
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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+ r1 K( m: Q& Z1 l; O
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。
8 g; _$ D4 [2 R- N3 | 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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