Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 5276 insertions, 0 deletions

diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
new file mode 100644
index 00000000000..21aed0e8779
--- /dev/null
+++ b/drivers/char/istallion.c
@@ -0,0 +1,5276 @@
+/*****************************************************************************/
+
+/*
+ *	istallion.c  -- stallion intelligent multiport serial driver.
+ *
+ *	Copyright (C) 1996-1999  Stallion Technologies
+ *	Copyright (C) 1994-1996  Greg Ungerer.
+ *
+ *	This code is loosely based on the Linux serial driver, written by
+ *	Linus Torvalds, Theodore T'so and others.
+ *
+ *	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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*****************************************************************************/
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial.h>
+#include <linux/cdk.h>
+#include <linux/comstats.h>
+#include <linux/istallion.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/device.h>
+#include <linux/wait.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#ifdef CONFIG_PCI
+#include <linux/pci.h>
+#endif
+
+/*****************************************************************************/
+
+/*
+ *	Define different board types. Not all of the following board types
+ *	are supported by this driver. But I will use the standard "assigned"
+ *	board numbers. Currently supported boards are abbreviated as:
+ *	ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
+ *	STAL = Stallion.
+ */
+#define	BRD_UNKNOWN	0
+#define	BRD_STALLION	1
+#define	BRD_BRUMBY4	2
+#define	BRD_ONBOARD2	3
+#define	BRD_ONBOARD	4
+#define	BRD_BRUMBY8	5
+#define	BRD_BRUMBY16	6
+#define	BRD_ONBOARDE	7
+#define	BRD_ONBOARD32	9
+#define	BRD_ONBOARD2_32	10
+#define	BRD_ONBOARDRS	11
+#define	BRD_EASYIO	20
+#define	BRD_ECH		21
+#define	BRD_ECHMC	22
+#define	BRD_ECP		23
+#define BRD_ECPE	24
+#define	BRD_ECPMC	25
+#define	BRD_ECHPCI	26
+#define	BRD_ECH64PCI	27
+#define	BRD_EASYIOPCI	28
+#define	BRD_ECPPCI	29
+
+#define	BRD_BRUMBY	BRD_BRUMBY4
+
+/*
+ *	Define a configuration structure to hold the board configuration.
+ *	Need to set this up in the code (for now) with the boards that are
+ *	to be configured into the system. This is what needs to be modified
+ *	when adding/removing/modifying boards. Each line entry in the
+ *	stli_brdconf[] array is a board. Each line contains io/irq/memory
+ *	ranges for that board (as well as what type of board it is).
+ *	Some examples:
+ *		{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
+ *	This line will configure an EasyConnection 8/64 at io address 2a0,
+ *	and shared memory address of cc000. Multiple EasyConnection 8/64
+ *	boards can share the same shared memory address space. No interrupt
+ *	is required for this board type.
+ *	Another example:
+ *		{ BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
+ *	This line will configure an EasyConnection 8/64 EISA in slot 5 and
+ *	shared memory address of 0x80000000 (2 GByte). Multiple
+ *	EasyConnection 8/64 EISA boards can share the same shared memory
+ *	address space. No interrupt is required for this board type.
+ *	Another example:
+ *		{ BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
+ *	This line will configure an ONboard (ISA type) at io address 240,
+ *	and shared memory address of d0000. Multiple ONboards can share
+ *	the same shared memory address space. No interrupt required.
+ *	Another example:
+ *		{ BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
+ *	This line will configure a Brumby board (any number of ports!) at
+ *	io address 360 and shared memory address of c8000. All Brumby boards
+ *	configured into a system must have their own separate io and memory
+ *	addresses. No interrupt is required.
+ *	Another example:
+ *		{ BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
+ *	This line will configure an original Stallion board at io address 330
+ *	and shared memory address d0000 (this would only be valid for a "V4.0"
+ *	or Rev.O Stallion board). All Stallion boards configured into the
+ *	system must have their own separate io and memory addresses. No
+ *	interrupt is required.
+ */
+
+typedef struct {
+	int		brdtype;
+	int		ioaddr1;
+	int		ioaddr2;
+	unsigned long	memaddr;
+	int		irq;
+	int		irqtype;
+} stlconf_t;
+
+static stlconf_t	stli_brdconf[] = {
+	/*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/
+};
+
+static int	stli_nrbrds = sizeof(stli_brdconf) / sizeof(stlconf_t);
+
+/*
+ *	There is some experimental EISA board detection code in this driver.
+ *	By default it is disabled, but for those that want to try it out,
+ *	then set the define below to be 1.
+ */
+#define	STLI_EISAPROBE	0
+
+/*****************************************************************************/
+
+/*
+ *	Define some important driver characteristics. Device major numbers
+ *	allocated as per Linux Device Registry.
+ */
+#ifndef	STL_SIOMEMMAJOR
+#define	STL_SIOMEMMAJOR		28
+#endif
+#ifndef	STL_SERIALMAJOR
+#define	STL_SERIALMAJOR		24
+#endif
+#ifndef	STL_CALLOUTMAJOR
+#define	STL_CALLOUTMAJOR	25
+#endif
+
+/*****************************************************************************/
+
+/*
+ *	Define our local driver identity first. Set up stuff to deal with
+ *	all the local structures required by a serial tty driver.
+ */
+static char	*stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
+static char	*stli_drvname = "istallion";
+static char	*stli_drvversion = "5.6.0";
+static char	*stli_serialname = "ttyE";
+
+static struct tty_driver	*stli_serial;
+
+/*
+ *	We will need to allocate a temporary write buffer for chars that
+ *	come direct from user space. The problem is that a copy from user
+ *	space might cause a page fault (typically on a system that is
+ *	swapping!). All ports will share one buffer - since if the system
+ *	is already swapping a shared buffer won't make things any worse.
+ */
+static char			*stli_tmpwritebuf;
+static DECLARE_MUTEX(stli_tmpwritesem);
+
+#define	STLI_TXBUFSIZE		4096
+
+/*
+ *	Use a fast local buffer for cooked characters. Typically a whole
+ *	bunch of cooked characters come in for a port, 1 at a time. So we
+ *	save those up into a local buffer, then write out the whole lot
+ *	with a large memcpy. Just use 1 buffer for all ports, since its
+ *	use it is only need for short periods of time by each port.
+ */
+static char			*stli_txcookbuf;
+static int			stli_txcooksize;
+static int			stli_txcookrealsize;
+static struct tty_struct	*stli_txcooktty;
+
+/*
+ *	Define a local default termios struct. All ports will be created
+ *	with this termios initially. Basically all it defines is a raw port
+ *	at 9600 baud, 8 data bits, no parity, 1 stop bit.
+ */
+static struct termios		stli_deftermios = {
+	.c_cflag	= (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
+	.c_cc		= INIT_C_CC,
+};
+
+/*
+ *	Define global stats structures. Not used often, and can be
+ *	re-used for each stats call.
+ */
+static comstats_t	stli_comstats;
+static combrd_t		stli_brdstats;
+static asystats_t	stli_cdkstats;
+static stlibrd_t	stli_dummybrd;
+static stliport_t	stli_dummyport;
+
+/*****************************************************************************/
+
+static stlibrd_t	*stli_brds[STL_MAXBRDS];
+
+static int		stli_shared;
+
+/*
+ *	Per board state flags. Used with the state field of the board struct.
+ *	Not really much here... All we need to do is keep track of whether
+ *	the board has been detected, and whether it is actually running a slave
+ *	or not.
+ */
+#define	BST_FOUND	0x1
+#define	BST_STARTED	0x2
+
+/*
+ *	Define the set of port state flags. These are marked for internal
+ *	state purposes only, usually to do with the state of communications
+ *	with the slave. Most of them need to be updated atomically, so always
+ *	use the bit setting operations (unless protected by cli/sti).
+ */
+#define	ST_INITIALIZING	1
+#define	ST_OPENING	2
+#define	ST_CLOSING	3
+#define	ST_CMDING	4
+#define	ST_TXBUSY	5
+#define	ST_RXING	6
+#define	ST_DOFLUSHRX	7
+#define	ST_DOFLUSHTX	8
+#define	ST_DOSIGS	9
+#define	ST_RXSTOP	10
+#define	ST_GETSIGS	11
+
+/*
+ *	Define an array of board names as printable strings. Handy for
+ *	referencing boards when printing trace and stuff.
+ */
+static char	*stli_brdnames[] = {
+	"Unknown",
+	"Stallion",
+	"Brumby",
+	"ONboard-MC",
+	"ONboard",
+	"Brumby",
+	"Brumby",
+	"ONboard-EI",
+	(char *) NULL,
+	"ONboard",
+	"ONboard-MC",
+	"ONboard-MC",
+	(char *) NULL,
+	(char *) NULL,
+	(char *) NULL,
+	(char *) NULL,
+	(char *) NULL,
+	(char *) NULL,
+	(char *) NULL,
+	(char *) NULL,
+	"EasyIO",
+	"EC8/32-AT",
+	"EC8/32-MC",
+	"EC8/64-AT",
+	"EC8/64-EI",
+	"EC8/64-MC",
+	"EC8/32-PCI",
+	"EC8/64-PCI",
+	"EasyIO-PCI",
+	"EC/RA-PCI",
+};
+
+/*****************************************************************************/
+
+#ifdef MODULE
+/*
+ *	Define some string labels for arguments passed from the module
+ *	load line. These allow for easy board definitions, and easy
+ *	modification of the io, memory and irq resoucres.
+ */
+
+static char	*board0[8];
+static char	*board1[8];
+static char	*board2[8];
+static char	*board3[8];
+
+static char	**stli_brdsp[] = {
+	(char **) &board0,
+	(char **) &board1,
+	(char **) &board2,
+	(char **) &board3
+};
+
+/*
+ *	Define a set of common board names, and types. This is used to
+ *	parse any module arguments.
+ */
+
+typedef struct stlibrdtype {
+	char	*name;
+	int	type;
+} stlibrdtype_t;
+
+static stlibrdtype_t	stli_brdstr[] = {
+	{ "stallion", BRD_STALLION },
+	{ "1", BRD_STALLION },
+	{ "brumby", BRD_BRUMBY },
+	{ "brumby4", BRD_BRUMBY },
+	{ "brumby/4", BRD_BRUMBY },
+	{ "brumby-4", BRD_BRUMBY },
+	{ "brumby8", BRD_BRUMBY },
+	{ "brumby/8", BRD_BRUMBY },
+	{ "brumby-8", BRD_BRUMBY },
+	{ "brumby16", BRD_BRUMBY },
+	{ "brumby/16", BRD_BRUMBY },
+	{ "brumby-16", BRD_BRUMBY },
+	{ "2", BRD_BRUMBY },
+	{ "onboard2", BRD_ONBOARD2 },
+	{ "onboard-2", BRD_ONBOARD2 },
+	{ "onboard/2", BRD_ONBOARD2 },
+	{ "onboard-mc", BRD_ONBOARD2 },
+	{ "onboard/mc", BRD_ONBOARD2 },
+	{ "onboard-mca", BRD_ONBOARD2 },
+	{ "onboard/mca", BRD_ONBOARD2 },
+	{ "3", BRD_ONBOARD2 },
+	{ "onboard", BRD_ONBOARD },
+	{ "onboardat", BRD_ONBOARD },
+	{ "4", BRD_ONBOARD },
+	{ "onboarde", BRD_ONBOARDE },
+	{ "onboard-e", BRD_ONBOARDE },
+	{ "onboard/e", BRD_ONBOARDE },
+	{ "onboard-ei", BRD_ONBOARDE },
+	{ "onboard/ei", BRD_ONBOARDE },
+	{ "7", BRD_ONBOARDE },
+	{ "ecp", BRD_ECP },
+	{ "ecpat", BRD_ECP },
+	{ "ec8/64", BRD_ECP },
+	{ "ec8/64-at", BRD_ECP },
+	{ "ec8/64-isa", BRD_ECP },
+	{ "23", BRD_ECP },
+	{ "ecpe", BRD_ECPE },
+	{ "ecpei", BRD_ECPE },
+	{ "ec8/64-e", BRD_ECPE },
+	{ "ec8/64-ei", BRD_ECPE },
+	{ "24", BRD_ECPE },
+	{ "ecpmc", BRD_ECPMC },
+	{ "ec8/64-mc", BRD_ECPMC },
+	{ "ec8/64-mca", BRD_ECPMC },
+	{ "25", BRD_ECPMC },
+	{ "ecppci", BRD_ECPPCI },
+	{ "ec/ra", BRD_ECPPCI },
+	{ "ec/ra-pc", BRD_ECPPCI },
+	{ "ec/ra-pci", BRD_ECPPCI },
+	{ "29", BRD_ECPPCI },
+};
+
+/*
+ *	Define the module agruments.
+ */
+MODULE_AUTHOR("Greg Ungerer");
+MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
+MODULE_LICENSE("GPL");
+
+
+MODULE_PARM(board0, "1-3s");
+MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
+MODULE_PARM(board1, "1-3s");
+MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
+MODULE_PARM(board2, "1-3s");
+MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
+MODULE_PARM(board3, "1-3s");
+MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
+
+#endif
+
+/*
+ *	Set up a default memory address table for EISA board probing.
+ *	The default addresses are all bellow 1Mbyte, which has to be the
+ *	case anyway. They should be safe, since we only read values from
+ *	them, and interrupts are disabled while we do it. If the higher
+ *	memory support is compiled in then we also try probing around
+ *	the 1Gb, 2Gb and 3Gb areas as well...
+ */
+static unsigned long	stli_eisamemprobeaddrs[] = {
+	0xc0000,    0xd0000,    0xe0000,    0xf0000,
+	0x80000000, 0x80010000, 0x80020000, 0x80030000,
+	0x40000000, 0x40010000, 0x40020000, 0x40030000,
+	0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
+	0xff000000, 0xff010000, 0xff020000, 0xff030000,
+};
+
+static int	stli_eisamempsize = sizeof(stli_eisamemprobeaddrs) / sizeof(unsigned long);
+int		stli_eisaprobe = STLI_EISAPROBE;
+
+/*
+ *	Define the Stallion PCI vendor and device IDs.
+ */
+#ifdef CONFIG_PCI
+#ifndef	PCI_VENDOR_ID_STALLION
+#define	PCI_VENDOR_ID_STALLION		0x124d
+#endif
+#ifndef PCI_DEVICE_ID_ECRA
+#define	PCI_DEVICE_ID_ECRA		0x0004
+#endif
+
+static struct pci_device_id istallion_pci_tbl[] = {
+	{ PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
+
+#endif /* CONFIG_PCI */
+
+/*****************************************************************************/
+
+/*
+ *	Hardware configuration info for ECP boards. These defines apply
+ *	to the directly accessible io ports of the ECP. There is a set of
+ *	defines for each ECP board type, ISA, EISA, MCA and PCI.
+ */
+#define	ECP_IOSIZE	4
+
+#define	ECP_MEMSIZE	(128 * 1024)
+#define	ECP_PCIMEMSIZE	(256 * 1024)
+
+#define	ECP_ATPAGESIZE	(4 * 1024)
+#define	ECP_MCPAGESIZE	(4 * 1024)
+#define	ECP_EIPAGESIZE	(64 * 1024)
+#define	ECP_PCIPAGESIZE	(64 * 1024)
+
+#define	STL_EISAID	0x8c4e
+
+/*
+ *	Important defines for the ISA class of ECP board.
+ */
+#define	ECP_ATIREG	0
+#define	ECP_ATCONFR	1
+#define	ECP_ATMEMAR	2
+#define	ECP_ATMEMPR	3
+#define	ECP_ATSTOP	0x1
+#define	ECP_ATINTENAB	0x10
+#define	ECP_ATENABLE	0x20
+#define	ECP_ATDISABLE	0x00
+#define	ECP_ATADDRMASK	0x3f000
+#define	ECP_ATADDRSHFT	12
+
+/*
+ *	Important defines for the EISA class of ECP board.
+ */
+#define	ECP_EIIREG	0
+#define	ECP_EIMEMARL	1
+#define	ECP_EICONFR	2
+#define	ECP_EIMEMARH	3
+#define	ECP_EIENABLE	0x1
+#define	ECP_EIDISABLE	0x0
+#define	ECP_EISTOP	0x4
+#define	ECP_EIEDGE	0x00
+#define	ECP_EILEVEL	0x80
+#define	ECP_EIADDRMASKL	0x00ff0000
+#define	ECP_EIADDRSHFTL	16
+#define	ECP_EIADDRMASKH	0xff000000
+#define	ECP_EIADDRSHFTH	24
+#define	ECP_EIBRDENAB	0xc84
+
+#define	ECP_EISAID	0x4
+
+/*
+ *	Important defines for the Micro-channel class of ECP board.
+ *	(It has a lot in common with the ISA boards.)
+ */
+#define	ECP_MCIREG	0
+#define	ECP_MCCONFR	1
+#define	ECP_MCSTOP	0x20
+#define	ECP_MCENABLE	0x80
+#define	ECP_MCDISABLE	0x00
+
+/*
+ *	Important defines for the PCI class of ECP board.
+ *	(It has a lot in common with the other ECP boards.)
+ */
+#define	ECP_PCIIREG	0
+#define	ECP_PCICONFR	1
+#define	ECP_PCISTOP	0x01
+
+/*
+ *	Hardware configuration info for ONboard and Brumby boards. These
+ *	defines apply to the directly accessible io ports of these boards.
+ */
+#define	ONB_IOSIZE	16
+#define	ONB_MEMSIZE	(64 * 1024)
+#define	ONB_ATPAGESIZE	(64 * 1024)
+#define	ONB_MCPAGESIZE	(64 * 1024)
+#define	ONB_EIMEMSIZE	(128 * 1024)
+#define	ONB_EIPAGESIZE	(64 * 1024)
+
+/*
+ *	Important defines for the ISA class of ONboard board.
+ */
+#define	ONB_ATIREG	0
+#define	ONB_ATMEMAR	1
+#define	ONB_ATCONFR	2
+#define	ONB_ATSTOP	0x4
+#define	ONB_ATENABLE	0x01
+#define	ONB_ATDISABLE	0x00
+#define	ONB_ATADDRMASK	0xff0000
+#define	ONB_ATADDRSHFT	16
+
+#define	ONB_MEMENABLO	0
+#define	ONB_MEMENABHI	0x02
+
+/*
+ *	Important defines for the EISA class of ONboard board.
+ */
+#define	ONB_EIIREG	0
+#define	ONB_EIMEMARL	1
+#define	ONB_EICONFR	2
+#define	ONB_EIMEMARH	3
+#define	ONB_EIENABLE	0x1
+#define	ONB_EIDISABLE	0x0
+#define	ONB_EISTOP	0x4
+#define	ONB_EIEDGE	0x00
+#define	ONB_EILEVEL	0x80
+#define	ONB_EIADDRMASKL	0x00ff0000
+#define	ONB_EIADDRSHFTL	16
+#define	ONB_EIADDRMASKH	0xff000000
+#define	ONB_EIADDRSHFTH	24
+#define	ONB_EIBRDENAB	0xc84
+
+#define	ONB_EISAID	0x1
+
+/*
+ *	Important defines for the Brumby boards. They are pretty simple,
+ *	there is not much that is programmably configurable.
+ */
+#define	BBY_IOSIZE	16
+#define	BBY_MEMSIZE	(64 * 1024)
+#define	BBY_PAGESIZE	(16 * 1024)
+
+#define	BBY_ATIREG	0
+#define	BBY_ATCONFR	1
+#define	BBY_ATSTOP	0x4
+
+/*
+ *	Important defines for the Stallion boards. They are pretty simple,
+ *	there is not much that is programmably configurable.
+ */
+#define	STAL_IOSIZE	16
+#define	STAL_MEMSIZE	(64 * 1024)
+#define	STAL_PAGESIZE	(64 * 1024)
+
+/*
+ *	Define the set of status register values for EasyConnection panels.
+ *	The signature will return with the status value for each panel. From
+ *	this we can determine what is attached to the board - before we have
+ *	actually down loaded any code to it.
+ */
+#define	ECH_PNLSTATUS	2
+#define	ECH_PNL16PORT	0x20
+#define	ECH_PNLIDMASK	0x07
+#define	ECH_PNLXPID	0x40
+#define	ECH_PNLINTRPEND	0x80
+
+/*
+ *	Define some macros to do things to the board. Even those these boards
+ *	are somewhat related there is often significantly different ways of
+ *	doing some operation on it (like enable, paging, reset, etc). So each
+ *	board class has a set of functions which do the commonly required
+ *	operations. The macros below basically just call these functions,
+ *	generally checking for a NULL function - which means that the board
+ *	needs nothing done to it to achieve this operation!
+ */
+#define	EBRDINIT(brdp)						\
+	if (brdp->init != NULL)					\
+		(* brdp->init)(brdp)
+
+#define	EBRDENABLE(brdp)					\
+	if (brdp->enable != NULL)				\
+		(* brdp->enable)(brdp);
+
+#define	EBRDDISABLE(brdp)					\
+	if (brdp->disable != NULL)				\
+		(* brdp->disable)(brdp);
+
+#define	EBRDINTR(brdp)						\
+	if (brdp->intr != NULL)					\
+		(* brdp->intr)(brdp);
+
+#define	EBRDRESET(brdp)						\
+	if (brdp->reset != NULL)				\
+		(* brdp->reset)(brdp);
+
+#define	EBRDGETMEMPTR(brdp,offset)				\
+	(* brdp->getmemptr)(brdp, offset, __LINE__)
+
+/*
+ *	Define the maximal baud rate, and the default baud base for ports.
+ */
+#define	STL_MAXBAUD	460800
+#define	STL_BAUDBASE	115200
+#define	STL_CLOSEDELAY	(5 * HZ / 10)
+
+/*****************************************************************************/
+
+/*
+ *	Define macros to extract a brd or port number from a minor number.
+ */
+#define	MINOR2BRD(min)		(((min) & 0xc0) >> 6)
+#define	MINOR2PORT(min)		((min) & 0x3f)
+
+/*
+ *	Define a baud rate table that converts termios baud rate selector
+ *	into the actual baud rate value. All baud rate calculations are based
+ *	on the actual baud rate required.
+ */
+static unsigned int	stli_baudrates[] = {
+	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
+	9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
+};
+
+/*****************************************************************************/
+
+/*
+ *	Define some handy local macros...
+ */
+#undef MIN
+#define	MIN(a,b)	(((a) <= (b)) ? (a) : (b))
+
+#undef	TOLOWER
+#define	TOLOWER(x)	((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x))
+
+/*****************************************************************************/
+
+/*
+ *	Prototype all functions in this driver!
+ */
+
+#ifdef MODULE
+static void	stli_argbrds(void);
+static int	stli_parsebrd(stlconf_t *confp, char **argp);
+
+static unsigned long	stli_atol(char *str);
+#endif
+
+int		stli_init(void);
+static int	stli_open(struct tty_struct *tty, struct file *filp);
+static void	stli_close(struct tty_struct *tty, struct file *filp);
+static int	stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
+static void	stli_putchar(struct tty_struct *tty, unsigned char ch);
+static void	stli_flushchars(struct tty_struct *tty);
+static int	stli_writeroom(struct tty_struct *tty);
+static int	stli_charsinbuffer(struct tty_struct *tty);
+static int	stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
+static void	stli_settermios(struct tty_struct *tty, struct termios *old);
+static void	stli_throttle(struct tty_struct *tty);
+static void	stli_unthrottle(struct tty_struct *tty);
+static void	stli_stop(struct tty_struct *tty);
+static void	stli_start(struct tty_struct *tty);
+static void	stli_flushbuffer(struct tty_struct *tty);
+static void	stli_breakctl(struct tty_struct *tty, int state);
+static void	stli_waituntilsent(struct tty_struct *tty, int timeout);
+static void	stli_sendxchar(struct tty_struct *tty, char ch);
+static void	stli_hangup(struct tty_struct *tty);
+static int	stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos);
+
+static int	stli_brdinit(stlibrd_t *brdp);
+static int	stli_startbrd(stlibrd_t *brdp);
+static ssize_t	stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
+static ssize_t	stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
+static int	stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg);
+static void	stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp);
+static void	stli_poll(unsigned long arg);
+static int	stli_hostcmd(stlibrd_t *brdp, stliport_t *portp);
+static int	stli_initopen(stlibrd_t *brdp, stliport_t *portp);
+static int	stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait);
+static int	stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait);
+static int	stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp);
+static void	stli_dohangup(void *arg);
+static int	stli_setport(stliport_t *portp);
+static int	stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
+static void	stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
+static void	stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp);
+static void	stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp);
+static void	stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
+static long	stli_mktiocm(unsigned long sigvalue);
+static void	stli_read(stlibrd_t *brdp, stliport_t *portp);
+static int	stli_getserial(stliport_t *portp, struct serial_struct __user *sp);
+static int	stli_setserial(stliport_t *portp, struct serial_struct __user *sp);
+static int	stli_getbrdstats(combrd_t __user *bp);
+static int	stli_getportstats(stliport_t *portp, comstats_t __user *cp);
+static int	stli_portcmdstats(stliport_t *portp);
+static int	stli_clrportstats(stliport_t *portp, comstats_t __user *cp);
+static int	stli_getportstruct(stliport_t __user *arg);
+static int	stli_getbrdstruct(stlibrd_t __user *arg);
+static void	*stli_memalloc(int len);
+static stlibrd_t *stli_allocbrd(void);
+
+static void	stli_ecpinit(stlibrd_t *brdp);
+static void	stli_ecpenable(stlibrd_t *brdp);
+static void	stli_ecpdisable(stlibrd_t *brdp);
+static char	*stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void	stli_ecpreset(stlibrd_t *brdp);
+static void	stli_ecpintr(stlibrd_t *brdp);
+static void	stli_ecpeiinit(stlibrd_t *brdp);
+static void	stli_ecpeienable(stlibrd_t *brdp);
+static void	stli_ecpeidisable(stlibrd_t *brdp);
+static char	*stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void	stli_ecpeireset(stlibrd_t *brdp);
+static void	stli_ecpmcenable(stlibrd_t *brdp);
+static void	stli_ecpmcdisable(stlibrd_t *brdp);
+static char	*stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void	stli_ecpmcreset(stlibrd_t *brdp);
+static void	stli_ecppciinit(stlibrd_t *brdp);
+static char	*stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void	stli_ecppcireset(stlibrd_t *brdp);
+
+static void	stli_onbinit(stlibrd_t *brdp);
+static void	stli_onbenable(stlibrd_t *brdp);
+static void	stli_onbdisable(stlibrd_t *brdp);
+static char	*stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void	stli_onbreset(stlibrd_t *brdp);
+static void	stli_onbeinit(stlibrd_t *brdp);
+static void	stli_onbeenable(stlibrd_t *brdp);
+static void	stli_onbedisable(stlibrd_t *brdp);
+static char	*stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void	stli_onbereset(stlibrd_t *brdp);
+static void	stli_bbyinit(stlibrd_t *brdp);
+static char	*stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void	stli_bbyreset(stlibrd_t *brdp);
+static void	stli_stalinit(stlibrd_t *brdp);
+static char	*stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void	stli_stalreset(stlibrd_t *brdp);
+
+static stliport_t *stli_getport(int brdnr, int panelnr, int portnr);
+
+static int	stli_initecp(stlibrd_t *brdp);
+static int	stli_initonb(stlibrd_t *brdp);
+static int	stli_eisamemprobe(stlibrd_t *brdp);
+static int	stli_initports(stlibrd_t *brdp);
+
+#ifdef	CONFIG_PCI
+static int	stli_initpcibrd(int brdtype, struct pci_dev *devp);
+#endif
+
+/*****************************************************************************/
+
+/*
+ *	Define the driver info for a user level shared memory device. This
+ *	device will work sort of like the /dev/kmem device - except that it
+ *	will give access to the shared memory on the Stallion intelligent
+ *	board. This is also a very useful debugging tool.
+ */
+static struct file_operations	stli_fsiomem = {
+	.owner		= THIS_MODULE,
+	.read		= stli_memread,
+	.write		= stli_memwrite,
+	.ioctl		= stli_memioctl,
+};
+
+/*****************************************************************************/
+
+/*
+ *	Define a timer_list entry for our poll routine. The slave board
+ *	is polled every so often to see if anything needs doing. This is
+ *	much cheaper on host cpu than using interrupts. It turns out to
+ *	not increase character latency by much either...
+ */
+static struct timer_list stli_timerlist = TIMER_INITIALIZER(stli_poll, 0, 0);
+
+static int	stli_timeron;
+
+/*
+ *	Define the calculation for the timeout routine.
+ */
+#define	STLI_TIMEOUT	(jiffies + 1)
+
+/*****************************************************************************/
+
+static struct class_simple *istallion_class;
+
+#ifdef MODULE
+
+/*
+ *	Loadable module initialization stuff.
+ */
+
+static int __init istallion_module_init(void)
+{
+	unsigned long	flags;
+
+#ifdef DEBUG
+	printk("init_module()\n");
+#endif
+
+	save_flags(flags);
+	cli();
+	stli_init();
+	restore_flags(flags);
+
+	return(0);
+}
+
+/*****************************************************************************/
+
+static void __exit istallion_module_exit(void)
+{
+	stlibrd_t	*brdp;
+	stliport_t	*portp;
+	unsigned long	flags;
+	int		i, j;
+
+#ifdef DEBUG
+	printk("cleanup_module()\n");
+#endif
+
+	printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
+		stli_drvversion);
+
+	save_flags(flags);
+	cli();
+
+/*
+ *	Free up all allocated resources used by the ports. This includes
+ *	memory and interrupts.
+ */
+	if (stli_timeron) {
+		stli_timeron = 0;
+		del_timer(&stli_timerlist);
+	}
+
+	i = tty_unregister_driver(stli_serial);
+	if (i) {
+		printk("STALLION: failed to un-register tty driver, "
+			"errno=%d\n", -i);
+		restore_flags(flags);
+		return;
+	}
+	put_tty_driver(stli_serial);
+	for (i = 0; i < 4; i++) {
+		devfs_remove("staliomem/%d", i);
+		class_simple_device_remove(MKDEV(STL_SIOMEMMAJOR, i));
+	}
+	devfs_remove("staliomem");
+	class_simple_destroy(istallion_class);
+	if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem")))
+		printk("STALLION: failed to un-register serial memory device, "
+			"errno=%d\n", -i);
+	if (stli_tmpwritebuf != (char *) NULL)
+		kfree(stli_tmpwritebuf);
+	if (stli_txcookbuf != (char *) NULL)
+		kfree(stli_txcookbuf);
+
+	for (i = 0; (i < stli_nrbrds); i++) {
+		if ((brdp = stli_brds[i]) == (stlibrd_t *) NULL)
+			continue;
+		for (j = 0; (j < STL_MAXPORTS); j++) {
+			portp = brdp->ports[j];
+			if (portp != (stliport_t *) NULL) {
+				if (portp->tty != (struct tty_struct *) NULL)
+					tty_hangup(portp->tty);
+				kfree(portp);
+			}
+		}
+
+		iounmap(brdp->membase);
+		if (brdp->iosize > 0)
+			release_region(brdp->iobase, brdp->iosize);
+		kfree(brdp);
+		stli_brds[i] = (stlibrd_t *) NULL;
+	}
+
+	restore_flags(flags);
+}
+
+module_init(istallion_module_init);
+module_exit(istallion_module_exit);
+
+/*****************************************************************************/
+
+/*
+ *	Check for any arguments passed in on the module load command line.
+ */
+
+static void stli_argbrds(void)
+{
+	stlconf_t	conf;
+	stlibrd_t	*brdp;
+	int		nrargs, i;
+
+#ifdef DEBUG
+	printk("stli_argbrds()\n");
+#endif
+
+	nrargs = sizeof(stli_brdsp) / sizeof(char **);
+
+	for (i = stli_nrbrds; (i < nrargs); i++) {
+		memset(&conf, 0, sizeof(conf));
+		if (stli_parsebrd(&conf, stli_brdsp[i]) == 0)
+			continue;
+		if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
+			continue;
+		stli_nrbrds = i + 1;
+		brdp->brdnr = i;
+		brdp->brdtype = conf.brdtype;
+		brdp->iobase = conf.ioaddr1;
+		brdp->memaddr = conf.memaddr;
+		stli_brdinit(brdp);
+	}
+}
+
+/*****************************************************************************/
+
+/*
+ *	Convert an ascii string number into an unsigned long.
+ */
+
+static unsigned long stli_atol(char *str)
+{
+	unsigned long	val;
+	int		base, c;
+	char		*sp;
+
+	val = 0;
+	sp = str;
+	if ((*sp == '0') && (*(sp+1) == 'x')) {
+		base = 16;
+		sp += 2;
+	} else if (*sp == '0') {
+		base = 8;
+		sp++;
+	} else {
+		base = 10;
+	}
+
+	for (; (*sp != 0); sp++) {
+		c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0');
+		if ((c < 0) || (c >= base)) {
+			printk("STALLION: invalid argument %s\n", str);
+			val = 0;
+			break;
+		}
+		val = (val * base) + c;
+	}
+	return(val);
+}
+
+/*****************************************************************************/
+
+/*
+ *	Parse the supplied argument string, into the board conf struct.
+ */
+
+static int stli_parsebrd(stlconf_t *confp, char **argp)
+{
+	char	*sp;
+	int	nrbrdnames, i;
+
+#ifdef DEBUG
+	printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp);
+#endif
+
+	if ((argp[0] == (char *) NULL) || (*argp[0] == 0))
+		return(0);
+
+	for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
+		*sp = TOLOWER(*sp);
+
+	nrbrdnames = sizeof(stli_brdstr) / sizeof(stlibrdtype_t);
+	for (i = 0; (i < nrbrdnames); i++) {
+		if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
+			break;
+	}
+	if (i >= nrbrdnames) {
+		printk("STALLION: unknown board name, %s?\n", argp[0]);
+		return(0);
+	}
+
+	confp->brdtype = stli_brdstr[i].type;
+	if ((argp[1] != (char *) NULL) && (*argp[1] != 0))
+		confp->ioaddr1 = stli_atol(argp[1]);
+	if ((argp[2] != (char *) NULL) && (*argp[2] != 0))
+		confp->memaddr = stli_atol(argp[2]);
+	return(1);
+}
+
+#endif
+
+/*****************************************************************************/
+
+/*
+ *	Local driver kernel malloc routine.
+ */
+
+static void *stli_memalloc(int len)
+{
+	return((void *) kmalloc(len, GFP_KERNEL));
+}
+
+/*****************************************************************************/
+
+static int stli_open(struct tty_struct *tty, struct file *filp)
+{
+	stlibrd_t	*brdp;
+	stliport_t	*portp;
+	unsigned int	minordev;
+	int		brdnr, portnr, rc;
+
+#ifdef DEBUG
+	printk("stli_open(tty=%x,filp=%x): device=%s\n", (int) tty,
+		(int) filp, tty->name);
+#endif
+
+	minordev = tty->index;
+	brdnr = MINOR2BRD(minordev);
+	if (brdnr >= stli_nrbrds)
+		return(-ENODEV);
+	brdp = stli_brds[brdnr];
+	if (brdp == (stlibrd_t *) NULL)
+		return(-ENODEV);
+	if ((brdp->state & BST_STARTED) == 0)
+		return(-ENODEV);
+	portnr = MINOR2PORT(minordev);
+	if ((portnr < 0) || (portnr > brdp->nrports))
+		return(-ENODEV);
+
+	portp = brdp->ports[portnr];
+	if (portp == (stliport_t *) NULL)
+		return(-ENODEV);
+	if (portp->devnr < 1)
+		return(-ENODEV);
+
+
+/*
+ *	Check if this port is in the middle of closing. If so then wait
+ *	until it is closed then return error status based on flag settings.
+ *	The sleep here does not need interrupt protection since the wakeup
+ *	for it is done with the same context.
+ */
+	if (portp->flags & ASYNC_CLOSING) {
+		interruptible_sleep_on(&portp->close_wait);
+		if (portp->flags & ASYNC_HUP_NOTIFY)
+			return(-EAGAIN);
+		return(-ERESTARTSYS);
+	}
+
+/*
+ *	On the first open of the device setup the port hardware, and
+ *	initialize the per port data structure. Since initializing the port
+ *	requires several commands to the board we will need to wait for any
+ *	other open that is already initializing the port.
+ */
+	portp->tty = tty;
+	tty->driver_data = portp;
+	portp->refcount++;
+
+	wait_event_interruptible(portp->raw_wait,
+			!test_bit(ST_INITIALIZING, &portp->state));
+	if (signal_pending(current))
+		return(-ERESTARTSYS);
+
+	if ((portp->flags & ASYNC_INITIALIZED) == 0) {
+		set_bit(ST_INITIALIZING, &portp->state);
+		if ((rc = stli_initopen(brdp, portp)) >= 0) {
+			portp->flags |= ASYNC_INITIALIZED;
+			clear_bit(TTY_IO_ERROR, &tty->flags);
+		}
+		clear_bit(ST_INITIALIZING, &portp->state);
+		wake_up_interruptible(&portp->raw_wait);
+		if (rc < 0)
+			return(rc);
+	}
+
+/*
+ *	Check if this port is in the middle of closing. If so then wait
+ *	until it is closed then return error status, based on flag settings.
+ *	The sleep here does not need interrupt protection since the wakeup
+ *	for it is done with the same context.
+ */
+	if (portp->flags & ASYNC_CLOSING) {
+		interruptible_sleep_on(&portp->close_wait);
+		if (portp->flags & ASYNC_HUP_NOTIFY)
+			return(-EAGAIN);
+		return(-ERESTARTSYS);
+	}