OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application$ q9 a- E o: @: a0 j8 q
/*: x9 ~5 X8 ], B3 X/ w9 [* U" D
* edma_test.c
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*# R0 [! A, D3 a. X4 y4 |5 X% j. X: K6 J
* brief EDMA3 Test Application5 x& \/ L+ s0 M& @7 J4 J
*
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* This file contains EDMA3 Test code." Q$ ?. o! |) T
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& B! s9 b! ^% `% }& x1 \5 y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. \; @% h6 I2 w/ j. q) S. A
* TO CHANGE.% ~1 M2 Z7 O& k, Z4 e2 K3 t
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( ^, q8 p T2 \7 u2 r/ c/ c
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as1 h9 p. T9 D& o/ Z, ^- S
* published by the Free Software Foundation version 2." r% Q0 X; V* Y+ A
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty5 t# ], H H' \; b" [
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the' G5 L1 A. P. a6 E* L" [
* GNU General Public License for more details.
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*/# h9 H- e4 g n3 f7 K% d
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#include <linux/module.h>
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#include <linux/init.h>/ K: ~) l. n: Z, a# a
#include <linux/errno.h>
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#include <linux/types.h>0 ]1 U9 t5 d3 P0 @ i' r8 p
#include <linux/interrupt.h>
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#include <asm/io.h>: n. k+ S1 A$ d9 g7 P
#include <linux/moduleparam.h>9 o. A' x1 J ]' T
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>" z1 o/ R, C4 j& V. O/ t* y& `
#include <mach/irqs.h>- J( A4 D$ `0 _
#include <asm/hardware/edma.h>' f( ^: {# L1 a$ A
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#undef EDMA3_DEBUG2 j) H. b0 } p6 A1 q2 A
/*#define EDMA3_DEBUG*/; b7 O0 z4 H# z- k) g$ ]
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ J1 h! e2 j& _7 H, S
#else
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#define DMA_PRINTK( x... )2 |1 c$ Q- {4 q( u5 n& B
#define DMA_FN_IN
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#define DMA_FN_OUT* x/ {" G- Q5 N+ h3 Y s) k$ D8 ]+ U
#endif* z- A+ l, t5 i: i" |8 {$ Y1 U
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3 r, E P# [- F+ m+ S! L- O( q+ i
#define TCINTEN_SHIFT 20% B) k, Y: c$ y! _
#define ITCINTEN_SHIFT 217 T F( W t% e2 E
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;" p, W$ v$ T& p. X1 ~: }8 k
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 w5 ^% k( l; z' I$ `+ e3 Z0 _# w1 w
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ k; \7 y H. X5 m' J% }. P3 f
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; X- h v$ @; a4 F
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dma_addr_t dmaphyssrc1 = 0;; O% s4 @2 }: ?& h' B: F! j( I
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;0 ?% a" }4 T0 W1 j
dma_addr_t dmaphysdest2 = 0;, w l7 V3 R1 g4 ~% R! P
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char *dmabufsrc1 = NULL;7 ~$ S4 j: f/ d+ u9 k
char *dmabufsrc2 = NULL;9 ]1 F2 j2 ]/ H& u @2 }9 s
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;2 I" l& _, ?6 j. F- Q& u7 `* a# @, x1 }
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static int acnt = 512;
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static int bcnt = 8;% i+ r8 i5 b: [. T. ]
static int ccnt = 8;9 j: m& c) R d% a1 G5 K5 h" _* I' L
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);; S$ z, u9 K3 s- R1 ?9 v" _& r
module_param(ccnt, int, S_IRUGO);

复制代码

   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
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。
   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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动