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 application3 j: i4 d4 i. h! j/ d2 k
/*" P e6 b1 D/ N9 U, ^0 U0 ]
* edma_test.c* L! O$ I' J2 Z
*3 `1 B0 c5 B2 @) W+ D' h
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code. L' D& S' j! s, ]# Y% L
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE/ Q5 a. N. v Y: n$ L9 B
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 o+ M1 d& q4 w% q: F0 ?
* TO CHANGE.' B4 y. [/ `# q4 L! P$ q. ~
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 V* B, V2 p/ e$ n
*
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* This program is free software; you can redistribute it and/or* j" |5 n% e' n& M- M+ M6 C4 y
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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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 _( f4 ]7 {2 N+ G9 n& }; J3 t
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, w0 j! F; A, e' s7 ?
* GNU General Public License for more details.
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*// C' K8 w( ^/ |, j0 Z0 y: k
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#include <linux/module.h>3 ?3 I1 P* i( Z+ W
#include <linux/init.h># f: ^7 [. K1 U
#include <linux/errno.h>
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#include <linux/types.h>9 |' @) P7 w. w- T
#include <linux/interrupt.h>
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#include <asm/io.h>/ t6 e! |! j! Z& ~' E
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>5 c3 ^' e+ \' O; o/ L4 s
#include <linux/mm.h>2 _& Y$ a% _. ~. a& E$ ]& }
#include <linux/dma-mapping.h>& b6 W5 _- f3 @+ W
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#include <mach/memory.h>
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#include <mach/hardware.h>, ] T: l. P2 u. u; H4 p
#include <mach/irqs.h>) W/ U! j ^/ ^; Z, [4 n+ @
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG- x2 n5 k- T) J$ o% |* n, g8 K
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG* R1 ?) F3 e) L9 t3 d
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): X3 k; q- P% v: B/ v
#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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT" j) R ^( P0 g5 q$ P
#endif0 b7 i0 q9 L* g& E3 [* A
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); f& l. H2 a* Y/ Q; A
#define STATIC_SHIFT 3/ C* k2 C2 D9 E) {, j! r' g
#define TCINTEN_SHIFT 20: [: [8 W. C) v, r
#define ITCINTEN_SHIFT 21) v, T( e( m. V% O
#define TCCHEN_SHIFT 22/ e* a4 s7 i9 o( O
#define ITCCHEN_SHIFT 23' e6 L9 t% w# c6 L+ o6 y1 P
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static volatile int irqraised1 = 0;( m- } W( S* J1 I `" A( e+ _9 s' B
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ X/ J, t) c1 c \+ ]( \3 i
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;0 I" C# s' P6 v1 z
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;3 ]- Q$ Y. R' B- A ]2 ^
char *dmabufsrc2 = NULL;# J/ e! O, ]7 Y$ P% ~: Z$ T6 v2 F1 [
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;- K- w9 a0 v8 i* g
static int ccnt = 8;6 Q( U& q% T& c' ~4 t' M4 @6 q
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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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