docs/htmldocs/vfs.html


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML
><HEAD
><TITLE
>Stackable VFS modules</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.77"><LINK
REL="HOME"
TITLE="SAMBA Project Documentation"
HREF="samba-howto-collection.html"><LINK
REL="UP"
TITLE="Optional configuration"
HREF="optional.html"><LINK
REL="PREVIOUS"
TITLE="Passdb XML plugin"
HREF="pdb-xml.html"><LINK
REL="NEXT"
TITLE="Storing Samba's User/Machine Account information in an LDAP Directory"
HREF="samba-ldap-howto.html"></HEAD
><BODY
CLASS="CHAPTER"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>SAMBA Project Documentation</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="pdb-xml.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="samba-ldap-howto.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="VFS"
></A
>Chapter 19. Stackable VFS modules</H1
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="AEN2651"
></A
>19.1. Introduction and configuration</H1
><P
>Since samba 3.0, samba supports stackable VFS(Virtual File System) modules. 
Samba passes each request to access the unix file system thru the loaded VFS modules. 
This chapter covers all the modules that come with the samba source and references to 
some external modules.</P
><P
>You may have problems to compile these modules, as shared libraries are
compiled and linked in different ways on different systems.
I currently tested them against GNU/linux and IRIX.</P
><P
>To use the VFS modules, create a share similar to the one below.  The
important parameter is the <B
CLASS="COMMAND"
>vfs object</B
> parameter which must point to
the exact pathname of the shared library object. For example, to use audit.so:

<PRE
CLASS="PROGRAMLISTING"
>       [audit]
                comment = Audited /data directory
                path = /data
                vfs object = /path/to/audit.so
                writeable = yes
                browseable = yes</PRE
></P
><P
>Further documentation on writing VFS modules for Samba can be found in
docs directory of the Samba source distribution.</P
></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="AEN2659"
></A
>19.2. Included modules</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2661"
></A
>19.2.1. audit</H2
><P
>A simple module to audit file access to the syslog
facility.  The following operations are logged:
<P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
>share</TD
></TR
><TR
><TD
>connect/disconnect</TD
></TR
><TR
><TD
>directory opens/create/remove</TD
></TR
><TR
><TD
>file open/close/rename/unlink/chmod</TD
></TR
></TBODY
></TABLE
><P
></P
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2669"
></A
>19.2.2. recycle</H2
><P
>A recycle-bin like modules. When used any unlink call
will be intercepted and files moved to the recycle
directory instead of beeing deleted.</P
><P
>Supported options:
<P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>vfs_recycle_bin:repository</DT
><DD
><P
>FIXME</P
></DD
><DT
>vfs_recycle_bin:keeptree</DT
><DD
><P
>FIXME</P
></DD
><DT
>vfs_recycle_bin:versions</DT
><DD
><P
>FIXME</P
></DD
><DT
>vfs_recycle_bin:touch</DT
><DD
><P
>FIXME</P
></DD
><DT
>vfs_recycle_bin:maxsize</DT
><DD
><P
>FIXME</P
></DD
><DT
>vfs_recycle_bin:exclude</DT
><DD
><P
>FIXME</P
></DD
><DT
>vfs_recycle_bin:exclude_dir</DT
><DD
><P
>FIXME</P
></DD
><DT
>vfs_recycle_bin:noversions</DT
><DD
><P
>FIXME</P
></DD
></DL
></DIV
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2706"
></A
>19.2.3. netatalk</H2
><P
>A netatalk module, that will ease co-existence of samba and
netatalk file sharing services.</P
><P
>Advantages compared to the old netatalk module:
<P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
>it doesn't care about creating of .AppleDouble forks, just keeps ones in sync</TD
></TR
><TR
><TD
>if share in smb.conf doesn't contain .AppleDouble item in hide or veto list, it will be added automatically</TD
></TR
></TBODY
></TABLE
><P
></P
></P
></DIV
></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="AEN2713"
></A
>19.3. VFS modules available elsewhere</H1
><P
>This section contains a listing of various other VFS modules that 
have been posted but don't currently reside in the Samba CVS 
tree for one reason ot another (e.g. it is easy for the maintainer 
to have his or her own CVS tree).</P
><P
>No statemets about the stability or functionality any module
should be implied due to its presence here.</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2717"
></A
>19.3.1. DatabaseFS</H2
><P
>URL: <A
HREF="http://www.css.tayloru.edu/~elorimer/databasefs/index.php"
TARGET="_top"
>http://www.css.tayloru.edu/~elorimer/databasefs/index.php</A
></P
><P
>By <A
HREF="mailto:elorimer@css.tayloru.edu"
TARGET="_top"
>Eric Lorimer</A
>.</P
><P
>I have created a VFS module which implements a fairly complete read-only
filesystem.  It presents information from a database as a filesystem in
a modular and generic way to allow different databases to be used
(originally designed for organizing MP3s under directories such as
"Artists," "Song Keywords," etc... I have since applied it to a student
roster database very easily).  The directory structure is stored in the
database itself and the module makes no assumptions about the database
structure beyond the table it requires to run.</P
><P
>Any feedback would be appreciated: comments, suggestions, patches,
etc...  If nothing else, hopefully it might prove useful for someone
else who wishes to create a virtual filesystem.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2725"
></A
>19.3.2. vscan</H2
><P
>URL: <A
HREF="http://www.openantivirus.org/"
TARGET="_top"
>http://www.openantivirus.org/</A
></P
><P
>samba-vscan is a proof-of-concept module for Samba, which
uses the VFS (virtual file system) features of Samba 2.2.x/3.0
alphaX. Of couse, Samba has to be compiled with VFS support. 
samba-vscan supports various virus scanners and is maintained 
by Rainer Link.</P
></DIV
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="pdb-xml.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="samba-howto-collection.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="samba-ldap-howto.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Passdb XML plugin</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="optional.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Storing Samba's User/Machine Account information in an LDAP Directory</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
/*------------------------------------------------------------------------
 . smc91111.c
 . This is a driver for SMSC's 91C111 single-chip Ethernet device.
 .
 . (C) Copyright 2002
 . Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 . Rolf Offermanns <rof@sysgo.de>
 .
 . Copyright (C) 2001 Standard Microsystems Corporation (SMSC)
 .	 Developed by Simple Network Magic Corporation (SNMC)
 . Copyright (C) 1996 by Erik Stahlman (ES)
 .
 . This program is free software; you can redistribute it and/or modify
 . it under the terms of the GNU General Public License as published by
 . the Free Software Foundation; either version 2 of the License, or
 . (at your option) any later version.
 .
 . This program is distributed in the hope that it will be useful,
 . but WITHOUT ANY WARRANTY; without even the implied warranty of
 . MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 . GNU General Public License for more details.
 .
 . You should have received a copy of the GNU General Public License
 . along with this program; if not, write to the Free Software
 . Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307	 USA
 .
 . Information contained in this file was obtained from the LAN91C111
 . manual from SMC.  To get a copy, if you really want one, you can find
 . information under www.smsc.com.
 .
 .
 . "Features" of the SMC chip:
 .   Integrated PHY/MAC for 10/100BaseT Operation
 .   Supports internal and external MII
 .   Integrated 8K packet memory
 .   EEPROM interface for configuration
 .
 . Arguments:
 .	io	= for the base address
 .	irq	= for the IRQ
 .
 . author:
 .	Erik Stahlman				( erik@vt.edu )
 .	Daris A Nevil				( dnevil@snmc.com )
 .
 .
 . Hardware multicast code from Peter Cammaert ( pc@denkart.be )
 .
 . Sources:
 .    o	  SMSC LAN91C111 databook (www.smsc.com)
 .    o	  smc9194.c by Erik Stahlman
 .    o	  skeleton.c by Donald Becker ( becker@cesdis.gsfc.nasa.gov )
 .
 . History:
 .	06/19/03  Richard Woodruff Made u-boot environment aware and added mac addr checks.
 .	10/17/01  Marco Hasewinkel Modify for DNP/1110
 .	07/25/01  Woojung Huh	   Modify for ADS Bitsy
 .	04/25/01  Daris A Nevil	   Initial public release through SMSC
 .	03/16/01  Daris A Nevil	   Modified smc9194.c for use with LAN91C111
 ----------------------------------------------------------------------------*/

#include <common.h>
#include <command.h>
#include <config.h>
#include "smc91111.h"
#include <net.h>

/* Use power-down feature of the chip */
#define POWER_DOWN	0

#define NO_AUTOPROBE

#define SMC_DEBUG 0

#if SMC_DEBUG > 1
static const char version[] =
	"smc91111.c:v1.0 04/25/01 by Daris A Nevil (dnevil@snmc.com)\n";
#endif

/* Autonegotiation timeout in seconds */
#ifndef CONFIG_SMC_AUTONEG_TIMEOUT
#define CONFIG_SMC_AUTONEG_TIMEOUT 10
#endif

/*------------------------------------------------------------------------
 .
 . Configuration options, for the experienced user to change.
 .
 -------------------------------------------------------------------------*/

/*
 . Wait time for memory to be free.  This probably shouldn't be
 . tuned that much, as waiting for this means nothing else happens
 . in the system
*/
#define MEMORY_WAIT_TIME 16


#if (SMC_DEBUG > 2 )
#define PRINTK3(args...) printf(args)
#else
#define PRINTK3(args...)
#endif

#if SMC_DEBUG > 1
#define PRINTK2(args...) printf(args)
#else
#define PRINTK2(args...)
#endif

#ifdef SMC_DEBUG
#define PRINTK(args...) printf(args)
#else
#define PRINTK(args...)
#endif


/*------------------------------------------------------------------------
 .
 . The internal workings of the driver.	 If you are changing anything
 . here with the SMC stuff, you should have the datasheet and know
 . what you are doing.
 .
 -------------------------------------------------------------------------*/
#define CARDNAME "LAN91C111"

/* Memory sizing constant */
#define LAN91C111_MEMORY_MULTIPLIER	(1024*2)

#ifndef CONFIG_SMC91111_BASE
#define CONFIG_SMC91111_BASE 0x20000300
#endif

#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE

#define SMC_DEV_NAME "SMC91111"
#define SMC_PHY_ADDR 0x0000
#define SMC_ALLOC_MAX_TRY 5
#define SMC_TX_TIMEOUT 30

#define SMC_PHY_CLOCK_DELAY 1000

#define ETH_ZLEN 60

#ifdef	CONFIG_SMC_USE_32_BIT
#define USE_32_BIT  1
#else
#undef USE_32_BIT
#endif
/*-----------------------------------------------------------------
 .
 .  The driver can be entered at any of the following entry points.
 .
 .------------------------------------------------------------------  */

extern int eth_init(bd_t *bd);
extern void eth_halt(void);
extern int eth_rx(void);
extern int eth_send(volatile void *packet, int length);

#ifdef SHARED_RESOURCES
	extern void swap_to(int device_id);
#endif

/*
 . This is called by  register_netdev().  It is responsible for
 . checking the portlist for the SMC9000 series chipset.  If it finds
 . one, then it will initialize the device, find the hardware information,
 . and sets up the appropriate device parameters.
 . NOTE: Interrupts are *OFF* when this procedure is called.
 .
 . NB:This shouldn't be static since it is referred to externally.
*/
int smc_init(void);

/*
 . This is called by  unregister_netdev().  It is responsible for
 . cleaning up before the driver is finally unregistered and discarded.
*/
void smc_destructor(void);

/*
 . The kernel calls this function when someone wants to use the device,
 . typically 'ifconfig ethX up'.
*/
static int smc_open(bd_t *bd);


/*
 . This is called by the kernel in response to 'ifconfig ethX down'.  It
 . is responsible for cleaning up everything that the open routine
 . does, and maybe putting the card into a powerdown state.
*/
static int smc_close(void);

/*
 . Configures the PHY through the MII Management interface
*/
#ifndef CONFIG_SMC91111_EXT_PHY
static void smc_phy_configure(void);
#endif /* !CONFIG_SMC91111_EXT_PHY */

/*
 . This is a separate procedure to handle the receipt of a packet, to
 . leave the interrupt code looking slightly cleaner
*/
static int smc_rcv(void);

/* See if a MAC address is defined in the current environment. If so use it. If not
 . print a warning and set the environment and other globals with the default.
 . If an EEPROM is present it really should be consulted.
*/
int smc_get_ethaddr(bd_t *bd);
int get_rom_mac(uchar *v_rom_mac);

/*
 ------------------------------------------------------------
 .
 . Internal routines
 .
 ------------------------------------------------------------
*/

#ifdef CONFIG_SMC_USE_IOFUNCS
/*
 * input and output functions
 *
 * Implemented due to inx,outx macros accessing the device improperly
 * and putting the device into an unkown state.
 *
 * For instance, on Sharp LPD7A400 SDK, affects were chip memory
 * could not be free'd (hence the alloc failures), duplicate packets,
 * packets being corrupt (shifted) on the wire, etc.  Switching to the
 * inx,outx functions fixed this problem.
 */
static inline word SMC_inw(dword offset);
static inline void SMC_outw(word value, dword offset);
static inline byte SMC_inb(dword offset);
static inline void SMC_outb(byte value, dword offset);
static inline void SMC_insw(dword offset, volatile uchar* buf, dword len);
static inline void SMC_outsw(dword offset, uchar* buf, dword len);

#define barrier() __asm__ __volatile__("": : :"memory")

static inline word SMC_inw(dword offset)
{
	word v;
	v = *((volatile word*)(SMC_BASE_ADDRESS+offset));
	barrier(); *(volatile u32*)(0xc0000000);
	return v;
}

static inline void SMC_outw(word value, dword offset)
{
	*((volatile word*)(SMC_BASE_ADDRESS+offset)) = value;
	barrier(); *(volatile u32*)(0xc0000000);
}

static inline byte SMC_inb(dword offset)
{
	word  _w;

	_w = SMC_inw(offset & ~((dword)1));
	return (offset & 1) ? (byte)(_w >> 8) : (byte)(_w);
}

static inline void SMC_outb(byte value, dword offset)
{
	word  _w;

	_w = SMC_inw(offset & ~((dword)1));
	if (offset & 1)
			*((volatile word*)(SMC_BASE_ADDRESS+(offset & ~((dword)1)))) = (value<<8) | (_w & 0x00ff);
	else
			*((volatile word*)(SMC_BASE_ADDRESS+offset)) = value | (_w & 0xff00);
}

static inline void SMC_insw(dword offset, volatile uchar* buf, dword len)
{
	volatile word *p = (volatile word *)buf;

	while (len-- > 0) {
		*p++ = SMC_inw(offset);
		barrier();
		*((volatile u32*)(0xc0000000));
	}
}

static inline void SMC_outsw(dword offset, uchar* buf, dword len)
{
	volatile word *p = (volatile word *)buf;

	while (len-- > 0) {
		SMC_outw(*p++, offset);
		barrier();
		*(volatile u32*)(0xc0000000);
	}
}
#endif  /* CONFIG_SMC_USE_IOFUNCS */

static char unsigned smc_mac_addr[6] = {0x02, 0x80, 0xad, 0x20, 0x31, 0xb8};

/*
 * This function must be called before smc_open() if you want to override
 * the default mac address.
 */

void smc_set_mac_addr(const unsigned char *addr) {
	int i;

	for (i=0; i < sizeof(smc_mac_addr); i++){
		smc_mac_addr[i] = addr[i];
	}
}

/*
 * smc_get_macaddr is no longer used. If you want to override the default
 * mac address, call smc_get_mac_addr as a part of the board initialization.
 */

#if 0
void smc_get_macaddr( byte *addr ) {
	/* MAC ADDRESS AT FLASHBLOCK 1 / OFFSET 0x10 */
	unsigned char *dnp1110_mac = (unsigned char *) (0xE8000000 + 0x20010);
	int i;


	for (i=0; i<6; i++) {
	    addr[0] = *(dnp1110_mac+0);
	    addr[1] = *(dnp1110_mac+1);
	    addr[2] = *(dnp1110_mac+2);
	    addr[3] = *(dnp1110_mac+3);
	    addr[4] = *(dnp1110_mac+4);
	    addr[5] = *(dnp1110_mac+5);
	}
}
#endif /* 0 */

/***********************************************
 * Show available memory		       *
 ***********************************************/
void dump_memory_info(void)
{
	word mem_info;
	word old_bank;

	old_bank = SMC_inw(BANK_SELECT)&0xF;

	SMC_SELECT_BANK(0);
	mem_info = SMC_inw( MIR_REG );
	PRINTK2("Memory: %4d available\n", (mem_info >> 8)*2048);

	SMC_SELECT_BANK(old_bank);
}
/*
 . A rather simple routine to print out a packet for debugging purposes.
*/
#if SMC_DEBUG > 2
static void print_packet( byte *, int );
#endif

#define tx_done(dev) 1


/* this does a soft reset on the device */
static void smc_reset( void );

/* Enable Interrupts, Receive, and Transmit */
static void smc_enable( void );

/* this puts the device in an inactive state */
static void smc_shutdown( void );

/* Routines to Read and Write the PHY Registers across the
   MII Management Interface
*/

#ifndef CONFIG_SMC91111_EXT_PHY
static word smc_read_phy_register(byte phyreg);
static void smc_write_phy_register(byte phyreg, word phydata);
#endif /* !CONFIG_SMC91111_EXT_PHY */


static int poll4int (byte mask, int timeout)
{
	int tmo = get_timer (0) + timeout * CONFIG_SYS_HZ;
	int is_timeout = 0;
	word old_bank = SMC_inw (BSR_REG);

	PRINTK2 ("Polling...\n");
	SMC_SELECT_BANK (2);
	while ((SMC_inw (SMC91111_INT_REG) & mask) == 0) {
		if (get_timer (0) >= tmo) {
			is_timeout = 1;
			break;
		}
	}

	/* restore old bank selection */
	SMC_SELECT_BANK (old_bank);

	if (is_timeout)
		return 1;
	else
		return 0;
}

/* Only one release command at a time, please */
static inline void smc_wait_mmu_release_complete (void)
{
	int count = 0;

	/* assume bank 2 selected */
	while (SMC_inw (MMU_CMD_REG) & MC_BUSY) {
		udelay (1);	/* Wait until not busy */
		if (++count > 200)
			break;
	}
}

/*
 . Function: smc_reset( void )
 . Purpose:
 .	This sets the SMC91111 chip to its normal state, hopefully from whatever
 .	mess that any other DOS driver has put it in.
 .
 . Maybe I should reset more registers to defaults in here?  SOFTRST  should
 . do that for me.
 .
 . Method:
 .	1.  send a SOFT RESET
 .	2.  wait for it to finish
 .	3.  enable autorelease mode
 .	4.  reset the memory management unit
 .	5.  clear all interrupts
 .
*/
static void smc_reset (void)
{
	PRINTK2 ("%s: smc_reset\n", SMC_DEV_NAME);

	/* This resets the registers mostly to defaults, but doesn't
	   affect EEPROM.  That seems unnecessary */
	SMC_SELECT_BANK (0);
	SMC_outw (RCR_SOFTRST, RCR_REG);

	/* Setup the Configuration Register */
	/* This is necessary because the CONFIG_REG is not affected */
	/* by a soft reset */

	SMC_SELECT_BANK (1);
#if defined(CONFIG_SMC91111_EXT_PHY)
	SMC_outw (CONFIG_DEFAULT | CONFIG_EXT_PHY, CONFIG_REG);
#else
	SMC_outw (CONFIG_DEFAULT, CONFIG_REG);
#endif


	/* Release from possible power-down state */
	/* Configuration register is not affected by Soft Reset */
	SMC_outw (SMC_inw (CONFIG_REG) | CONFIG_EPH_POWER_EN, CONFIG_REG);

	SMC_SELECT_BANK (0);

	/* this should pause enough for the chip to be happy */
	udelay (10);

	/* Disable transmit and receive functionality */
	SMC_outw (RCR_CLEAR, RCR_REG);
	SMC_outw (TCR_CLEAR, TCR_REG);

	/* set the control register */
	SMC_SELECT_BANK (1);
	SMC_outw (CTL_DEFAULT, CTL_REG);

	/* Reset the MMU */
	SMC_SELECT_BANK (2);
	smc_wait_mmu_release_complete ();
	SMC_outw (MC_RESET, MMU_CMD_REG);
	while (SMC_inw (MMU_CMD_REG) & MC_BUSY)
		udelay (1);	/* Wait until not busy */

	/* Note:  It doesn't seem that waiting for the MMU busy is needed here,
	   but this is a place where future chipsets _COULD_ break.  Be wary
	   of issuing another MMU command right after this */

	/* Disable all interrupts */
	SMC_outb (0, IM_REG);
}

/*
 . Function: smc_enable
 . Purpose: let the chip talk to the outside work
 . Method:
 .	1.  Enable the transmitter
 .	2.  Enable the receiver
 .	3.  Enable interrupts
*/
static void smc_enable()
{
	PRINTK2("%s: smc_enable\n", SMC_DEV_NAME);
	SMC_SELECT_BANK( 0 );
	/* see the header file for options in TCR/RCR DEFAULT*/
	SMC_outw( TCR_DEFAULT, TCR_REG );
	SMC_outw( RCR_DEFAULT, RCR_REG );

	/* clear MII_DIS */
/*	smc_write_phy_register(PHY_CNTL_REG, 0x0000); */
}

/*
 . Function: smc_shutdown
 . Purpose:  closes down the SMC91xxx chip.
 . Method:
 .	1. zero the interrupt mask
 .	2. clear the enable receive flag
 .	3. clear the enable xmit flags
 .
 . TODO:
 .   (1) maybe utilize power down mode.
 .	Why not yet?  Because while the chip will go into power down mode,
 .	the manual says that it will wake up in response to any I/O requests
 .	in the register space.	 Empirical results do not show this working.
*/
static void smc_shutdown()
{
	PRINTK2(CARDNAME ": smc_shutdown\n");

	/* no more interrupts for me */
	SMC_SELECT_BANK( 2 );
	SMC_outb( 0, IM_REG );