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. T/ S" ^& _7 V0 J4 O( t
/*/ u! z: E5 K6 w- E+ i8 }
* edma_test.c3 B' H% ~* R0 j: y% ~
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.1 N& K: W, p: k1 G% N" i7 s
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 F6 z( C0 w8 c
*
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* This program is free software; you can redistribute it and/or& D8 N4 I' v) ~8 s) Y- {% u/ R8 Q `
* modify it under the terms of the GNU General Public License as" y3 D& W, E& ~5 f$ e( V( c) G4 y
* published by the Free Software Foundation version 2.+ o1 e! Y9 s* ~1 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 warranty* X; V+ d" I) a2 P8 G% A9 j" g
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ [) z4 L# @3 Z) [$ i; V6 f1 u" `
* GNU General Public License for more details.
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*/
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#include <linux/module.h># ]6 m; Z1 I6 _! E9 y* ~
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>. ^% X8 P5 V+ `; P1 X9 y, \
#include <linux/interrupt.h>
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#include <asm/io.h>3 R3 u. [+ l2 { w: \, a' I
#include <linux/moduleparam.h>+ g' b% E6 q5 ]8 Z& M# p2 s
#include <linux/sysctl.h>- S) {3 J9 e1 s2 }
#include <linux/mm.h>& {, t6 g9 Q- a, j7 V" S
#include <linux/dma-mapping.h>- t# L! P9 R" A# T" c9 q
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#include <mach/memory.h>7 ]- @* a. ]& u( v, E4 P9 ]' E2 b
#include <mach/hardware.h>2 x Y) t( b9 g$ g$ M! P7 a# W3 k6 s
#include <mach/irqs.h>! s3 ?+ V9 |9 v
#include <asm/hardware/edma.h>% t/ X* z+ M4 G J. ~$ I
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#undef EDMA3_DEBUG7 z* G% `. h3 o$ t" n# G* X
/*#define EDMA3_DEBUG*/3 b2 y& H6 O8 Q# @
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), [ I p) Q" u7 g' _
#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... )2 E) d; d, O/ T. E$ v
#define DMA_FN_IN
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#define DMA_FN_OUT, I1 Y0 Z: V8 h) s
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). b- r; \5 q7 t9 g% F
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20) Z, `3 A- ^# i- v/ A; q
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22; L0 m3 z- a. N; j1 y Q& V- j
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;1 t1 H/ @, P7 d- S
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);7 D& t$ |8 ^/ s8 r3 u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); l4 A8 b( a! _1 b, B$ \
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 i3 l, E( N/ q6 [3 D9 @
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;1 W. O! h4 f- v% z7 L% H: u, w
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;! p" Y! }4 B& c, C* y+ f1 ^
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;+ E- L# ?2 {; s* p0 r+ M
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static int acnt = 512;) H2 H& i- W! V) j7 u8 H4 W, L
static int bcnt = 8;
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static int ccnt = 8;) o D( [. e4 _0 \: v' i0 M
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module_param(acnt, int, S_IRUGO);1 ^, ], `# O( a7 P* G. ^2 E s* c
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