istallion.c 122.4 KB
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/*****************************************************************************/

/*
 *	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.
 *
 */

/*****************************************************************************/

#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/device.h>
#include <linux/wait.h>
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#include <linux/eisa.h>
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#include <linux/ctype.h>
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#include <asm/io.h>
#include <asm/uaccess.h>

#include <linux/pci.h>

/*****************************************************************************/

/*
 *	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_ONBOARDE	7
#define	BRD_ECP		23
#define BRD_ECPE	24
#define	BRD_ECPMC	25
#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.
 */

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struct stlconf {
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	int		brdtype;
	int		ioaddr1;
	int		ioaddr2;
	unsigned long	memaddr;
	int		irq;
	int		irqtype;
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};
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static unsigned int stli_nrbrds;
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/* stli_lock must NOT be taken holding brd_lock */
static spinlock_t stli_lock;	/* TTY logic lock */
static spinlock_t brd_lock;	/* Board logic lock */

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/*
 *	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;


#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.
 */
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static struct ktermios		stli_deftermios = {
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	.c_cflag	= (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
	.c_cc		= INIT_C_CC,
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	.c_ispeed	= 9600,
	.c_ospeed	= 9600,
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};

/*
 *	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;
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static struct asystats	stli_cdkstats;
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/*****************************************************************************/

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static DEFINE_MUTEX(stli_brdslock);
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static struct stlibrd	*stli_brds[STL_MAXBRDS];
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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
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#define	BST_PROBED	0x4
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/*
 *	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",
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	NULL,
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	"ONboard",
	"ONboard-MC",
	"ONboard-MC",
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	NULL,
	NULL,
	NULL,
	NULL,
	NULL,
	NULL,
	NULL,
	NULL,
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	"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",
};

/*****************************************************************************/

/*
 *	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.
 */

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static struct stlibrdtype {
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	char	*name;
	int	type;
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} stli_brdstr[] = {
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	{ "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");


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module_param_array(board0, charp, NULL, 0);
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MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
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module_param_array(board1, charp, NULL, 0);
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MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
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module_param_array(board2, charp, NULL, 0);
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MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
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module_param_array(board3, charp, NULL, 0);
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MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");

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#if STLI_EISAPROBE != 0
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/*
 *	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,
};

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static int	stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
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#endif
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/*
 *	Define the Stallion PCI vendor and device IDs.
 */
#ifndef PCI_DEVICE_ID_ECRA
#define	PCI_DEVICE_ID_ECRA		0x0004
#endif

static struct pci_device_id istallion_pci_tbl[] = {
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	{ PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), },
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	{ 0 }
};
MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);

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static struct pci_driver stli_pcidriver;
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/*****************************************************************************/

/*
 *	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)

/*****************************************************************************/

/*
 *	Prototype all functions in this driver!
 */

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static int	stli_parsebrd(struct stlconf *confp, char **argp);
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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);
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static void	stli_settermios(struct tty_struct *tty, struct ktermios *old);
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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);
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static int	stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos);
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static int	stli_brdinit(struct stlibrd *brdp);
static int	stli_startbrd(struct stlibrd *brdp);
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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);
623
static void	stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp);
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static void	stli_poll(unsigned long arg);
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static int	stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
static int	stli_initopen(struct stlibrd *brdp, struct stliport *portp);
static int	stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
static int	stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
static int	stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp);
static int	stli_setport(struct stliport *portp);
static int	stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
static void	stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
static void	__stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
static void	stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
static void	stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
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static void	stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
static long	stli_mktiocm(unsigned long sigvalue);
638 639 640
static void	stli_read(struct stlibrd *brdp, struct stliport *portp);
static int	stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
static int	stli_setserial(struct stliport *portp, struct serial_struct __user *sp);
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static int	stli_getbrdstats(combrd_t __user *bp);
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static int	stli_getportstats(struct stliport *portp, comstats_t __user *cp);
static int	stli_portcmdstats(struct stliport *portp);
static int	stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
static int	stli_getportstruct(struct stliport __user *arg);
static int	stli_getbrdstruct(struct stlibrd __user *arg);
static struct stlibrd *stli_allocbrd(void);

static void	stli_ecpinit(struct stlibrd *brdp);
static void	stli_ecpenable(struct stlibrd *brdp);
static void	stli_ecpdisable(struct stlibrd *brdp);
static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
static void	stli_ecpreset(struct stlibrd *brdp);
static void	stli_ecpintr(struct stlibrd *brdp);
static void	stli_ecpeiinit(struct stlibrd *brdp);
static void	stli_ecpeienable(struct stlibrd *brdp);
static void	stli_ecpeidisable(struct stlibrd *brdp);
static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
static void	stli_ecpeireset(struct stlibrd *brdp);
static void	stli_ecpmcenable(struct stlibrd *brdp);
static void	stli_ecpmcdisable(struct stlibrd *brdp);
static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
static void	stli_ecpmcreset(struct stlibrd *brdp);
static void	stli_ecppciinit(struct stlibrd *brdp);
static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
static void	stli_ecppcireset(struct stlibrd *brdp);

static void	stli_onbinit(struct stlibrd *brdp);
static void	stli_onbenable(struct stlibrd *brdp);
static void	stli_onbdisable(struct stlibrd *brdp);
static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
static void	stli_onbreset(struct stlibrd *brdp);
static void	stli_onbeinit(struct stlibrd *brdp);
static void	stli_onbeenable(struct stlibrd *brdp);
static void	stli_onbedisable(struct stlibrd *brdp);
static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
static void	stli_onbereset(struct stlibrd *brdp);
static void	stli_bbyinit(struct stlibrd *brdp);
static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
static void	stli_bbyreset(struct stlibrd *brdp);
static void	stli_stalinit(struct stlibrd *brdp);
static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
static void	stli_stalreset(struct stlibrd *brdp);

685
static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
686 687 688

static int	stli_initecp(struct stlibrd *brdp);
static int	stli_initonb(struct stlibrd *brdp);
689
#if STLI_EISAPROBE != 0
690
static int	stli_eisamemprobe(struct stlibrd *brdp);
691
#endif
692
static int	stli_initports(struct stlibrd *brdp);
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/*****************************************************************************/

/*
 *	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.
 */
702
static const struct file_operations	stli_fsiomem = {
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	.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...
 */
717
static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
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static int	stli_timeron;

/*
 *	Define the calculation for the timeout routine.
 */
#define	STLI_TIMEOUT	(jiffies + 1)

/*****************************************************************************/

728
static struct class *istallion_class;
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730
static void stli_cleanup_ports(struct stlibrd *brdp)
731
{
732
	struct stliport *portp;
733 734 735 736 737 738 739 740 741 742 743 744
	unsigned int j;

	for (j = 0; j < STL_MAXPORTS; j++) {
		portp = brdp->ports[j];
		if (portp != NULL) {
			if (portp->tty != NULL)
				tty_hangup(portp->tty);
			kfree(portp);
		}
	}
}

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/*****************************************************************************/

/*
 *	Parse the supplied argument string, into the board conf struct.
 */

751
static int stli_parsebrd(struct stlconf *confp, char **argp)
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{
753
	unsigned int i;
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	char *sp;
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	if (argp[0] == NULL || *argp[0] == 0)
		return 0;
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	for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
760
		*sp = tolower(*sp);
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	for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
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		if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
			break;
	}
766
	if (i == ARRAY_SIZE(stli_brdstr)) {
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		printk("STALLION: unknown board name, %s?\n", argp[0]);
768
		return 0;
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	}

	confp->brdtype = stli_brdstr[i].type;
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	if (argp[1] != NULL && *argp[1] != 0)
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		confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
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	if (argp[2] !=  NULL && *argp[2] != 0)
775
		confp->memaddr = simple_strtoul(argp[2], NULL, 0);
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	return(1);
}

/*****************************************************************************/

static int stli_open(struct tty_struct *tty, struct file *filp)
{
783 784
	struct stlibrd *brdp;
	struct stliport *portp;
785 786
	unsigned int minordev, brdnr, portnr;
	int rc;
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	minordev = tty->index;
	brdnr = MINOR2BRD(minordev);
	if (brdnr >= stli_nrbrds)
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		return -ENODEV;
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	brdp = stli_brds[brdnr];
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	if (brdp == NULL)
		return -ENODEV;
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	if ((brdp->state & BST_STARTED) == 0)
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		return -ENODEV;
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	portnr = MINOR2PORT(minordev);
798
	if (portnr > brdp->nrports)
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		return -ENODEV;
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	portp = brdp->ports[portnr];
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	if (portp == NULL)
		return -ENODEV;
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	if (portp->devnr < 1)
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		return -ENODEV;
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/*
 *	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)
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			return -EAGAIN;
		return -ERESTARTSYS;
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	}

/*
 *	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))
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		return -ERESTARTSYS;
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	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)
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			return rc;
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	}

/*
 *	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)
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			return -EAGAIN;
		return -ERESTARTSYS;
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	}

/*
 *	Based on type of open being done check if it can overlap with any
 *	previous opens still in effect. If we are a normal serial device
 *	then also we might have to wait for carrier.
 */
	if (!(filp->f_flags & O_NONBLOCK)) {
		if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0)
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			return rc;
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	}
	portp->flags |= ASYNC_NORMAL_ACTIVE;
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	return 0;
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}

/*****************************************************************************/

static void stli_close(struct tty_struct *tty, struct file *filp)
{
878 879
	struct stlibrd *brdp;
	struct stliport *portp;
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	unsigned long flags;
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	portp = tty->driver_data;
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	if (portp == NULL)
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		return;

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	spin_lock_irqsave(&stli_lock, flags);
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	if (tty_hung_up_p(filp)) {
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		spin_unlock_irqrestore(&stli_lock, flags);
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		return;
	}
	if ((tty->count == 1) && (portp->refcount != 1))
		portp->refcount = 1;
	if (portp->refcount-- > 1) {
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		spin_unlock_irqrestore(&stli_lock, flags);
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		return;
	}

	portp->flags |= ASYNC_CLOSING;

/*
 *	May want to wait for data to drain before closing. The BUSY flag
 *	keeps track of whether we are still transmitting or not. It is
 *	updated by messages from the slave - indicating when all chars
 *	really have drained.
 */
	if (tty == stli_txcooktty)
		stli_flushchars(tty);
	tty->closing = 1;
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	spin_unlock_irqrestore(&stli_lock, flags);

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	if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
		tty_wait_until_sent(tty, portp->closing_wait);

	portp->flags &= ~ASYNC_INITIALIZED;
	brdp = stli_brds[portp->brdnr];
	stli_rawclose(brdp, portp, 0, 0);
	if (tty->termios->c_cflag & HUPCL) {
		stli_mkasysigs(&portp->asig, 0, 0);
		if (test_bit(ST_CMDING, &portp->state))
			set_bit(ST_DOSIGS, &portp->state);
		else
			stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
				sizeof(asysigs_t), 0);
	}
	clear_bit(ST_TXBUSY, &portp->state);
	clear_bit(ST_RXSTOP, &portp->state);
	set_bit(TTY_IO_ERROR, &tty->flags);
	if (tty->ldisc.flush_buffer)
		(tty->ldisc.flush_buffer)(tty);
	set_bit(ST_DOFLUSHRX, &portp->state);
	stli_flushbuffer(tty);

	tty->closing = 0;
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	portp->tty = NULL;
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	if (portp->openwaitcnt) {
		if (portp->close_delay)
			msleep_interruptible(jiffies_to_msecs(portp->close_delay));
		wake_up_interruptible(&portp->open_wait);
	}

	portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
	wake_up_interruptible(&portp->close_wait);
}

/*****************************************************************************/

/*
 *	Carry out first open operations on a port. This involves a number of
 *	commands to be sent to the slave. We need to open the port, set the
 *	notification events, set the initial port settings, get and set the
 *	initial signal values. We sleep and wait in between each one. But
 *	this still all happens pretty quickly.
 */

956
static int stli_initopen(struct stlibrd *brdp, struct stliport *portp)
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{
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	struct tty_struct *tty;
	asynotify_t nt;
	asyport_t aport;
	int rc;
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	if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
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		return rc;
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	memset(&nt, 0, sizeof(asynotify_t));
	nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
	nt.signal = SG_DCD;
	if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
	    sizeof(asynotify_t), 0)) < 0)
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		return rc;
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	tty = portp->tty;
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	if (tty == NULL)
		return -ENODEV;
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	stli_mkasyport(portp, &aport, tty->termios);
	if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
	    sizeof(asyport_t), 0)) < 0)
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		return rc;
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	set_bit(ST_GETSIGS, &portp->state);
	if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
	    sizeof(asysigs_t), 1)) < 0)
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		return rc;
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	if (test_and_clear_bit(ST_GETSIGS, &portp->state))
		portp->sigs = stli_mktiocm(portp->asig.sigvalue);
	stli_mkasysigs(&portp->asig, 1, 1);
	if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
	    sizeof(asysigs_t), 0)) < 0)
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		return rc;
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	return 0;
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}

/*****************************************************************************/

/*
 *	Send an open message to the slave. This will sleep waiting for the
 *	acknowledgement, so must have user context. We need to co-ordinate
 *	with close events here, since we don't want open and close events
 *	to overlap.
 */

1004
static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
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{
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	cdkhdr_t __iomem *hdrp;
	cdkctrl_t __iomem *cp;
	unsigned char __iomem *bits;
	unsigned long flags;
	int rc;
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/*
 *	Send a message to the slave to open this port.
 */

/*
 *	Slave is already closing this port. This can happen if a hangup
 *	occurs on this port. So we must wait until it is complete. The
 *	order of opens and closes may not be preserved across shared
 *	memory, so we must wait until it is complete.
 */
	wait_event_interruptible(portp->raw_wait,
			!test_bit(ST_CLOSING, &portp->state));
	if (signal_pending(current)) {
		return -ERESTARTSYS;
	}

/*
 *	Everything is ready now, so write the open message into shared
 *	memory. Once the message is in set the service bits to say that
 *	this port wants service.
 */
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	spin_lock_irqsave(&brd_lock, flags);
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	EBRDENABLE(brdp);
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	cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
	writel(arg, &cp->openarg);
	writeb(1, &cp->open);
	hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
	bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
L
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		portp->portidx;
A
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	writeb(readb(bits) | portp->portbit, bits);
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1042 1043 1044
	EBRDDISABLE(brdp);

	if (wait == 0) {
A
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1045 1046
		spin_unlock_irqrestore(&brd_lock, flags);
		return 0;
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1047 1048 1049 1050 1051 1052 1053 1054
	}

/*
 *	Slave is in action, so now we must wait for the open acknowledgment
 *	to come back.
 */
	rc = 0;
	set_bit(ST_OPENING, &portp->state);
A
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1055 1056
	spin_unlock_irqrestore(&brd_lock, flags);

L
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1057 1058 1059 1060 1061 1062 1063
	wait_event_interruptible(portp->raw_wait,
			!test_bit(ST_OPENING, &portp->state));
	if (signal_pending(current))
		rc = -ERESTARTSYS;

	if ((rc == 0) && (portp->rc != 0))
		rc = -EIO;
A
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	return rc;
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}

/*****************************************************************************/

/*
 *	Send a close message to the slave. Normally this will sleep waiting
 *	for the acknowledgement, but if wait parameter is 0 it will not. If
 *	wait is true then must have user context (to sleep).
 */

1075
static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
L
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{
A
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	cdkhdr_t __iomem *hdrp;
	cdkctrl_t __iomem *cp;
	unsigned char __iomem *bits;
	unsigned long flags;
	int rc;
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/*
 *	Slave is already closing this port. This can happen if a hangup
 *	occurs on this port.
 */
	if (wait) {
		wait_event_interruptible(portp->raw_wait,
				!test_bit(ST_CLOSING, &portp->state));
		if (signal_pending(current)) {
			return -ERESTARTSYS;
		}
	}

/*
 *	Write the close command into shared memory.
 */
A
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	spin_lock_irqsave(&brd_lock, flags);
L
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	EBRDENABLE(brdp);
A
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1100 1101 1102 1103 1104
	cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
	writel(arg, &cp->closearg);
	writeb(1, &cp->close);
	hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
	bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
L
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		portp->portidx;
A
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	writeb(readb(bits) |portp->portbit, bits);
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	EBRDDISABLE(brdp);

	set_bit(ST_CLOSING, &portp->state);
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	spin_unlock_irqrestore(&brd_lock, flags);

	if (wait == 0)
		return 0;
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/*
 *	Slave is in action, so now we must wait for the open acknowledgment
 *	to come back.
 */
	rc = 0;
	wait_event_interruptible(portp->raw_wait,
			!test_bit(ST_CLOSING, &portp->state));
	if (signal_pending(current))
		rc = -ERESTARTSYS;

	if ((rc == 0) && (portp->rc != 0))
		rc = -EIO;
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	return rc;
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}

/*****************************************************************************/

/*
 *	Send a command to the slave and wait for the response. This must
 *	have user context (it sleeps). This routine is generic in that it
 *	can send any type of command. Its purpose is to wait for that command
 *	to complete (as opposed to initiating the command then returning).
 */

1139
static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
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{
	wait_event_interruptible(portp->raw_wait,
			!test_bit(ST_CMDING, &portp->state));
A
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	if (signal_pending(current))
L
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		return -ERESTARTSYS;

	stli_sendcmd(brdp, portp, cmd, arg, size, copyback);

	wait_event_interruptible(portp->raw_wait,
			!test_bit(ST_CMDING, &portp->state));
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	if (signal_pending(current))
L
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		return -ERESTARTSYS;

	if (portp->rc != 0)
A
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		return -EIO;
	return 0;
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}

/*****************************************************************************/

/*
 *	Send the termios settings for this port to the slave. This sleeps
 *	waiting for the command to complete - so must have user context.
 */

1165
static int stli_setport(struct stliport *portp)
L
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{
1167
	struct stlibrd *brdp;
A
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1168
	asyport_t aport;
L
Linus Torvalds 已提交
1169

A
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1170 1171 1172 1173
	if (portp == NULL)
		return -ENODEV;
	if (portp->tty == NULL)
		return -ENODEV;
1174
	if (portp->brdnr >= stli_nrbrds)
A
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1175
		return -ENODEV;
L
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	brdp = stli_brds[portp->brdnr];
A
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	if (brdp == NULL)
		return -ENODEV;
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	stli_mkasyport(portp, &aport, portp->tty->termios);
	return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
}

/*****************************************************************************/

/*
 *	Possibly need to wait for carrier (DCD signal) to come high. Say
 *	maybe because if we are clocal then we don't need to wait...
 */

1191
static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp)
L
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1192
{
A
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	unsigned long flags;
	int rc, doclocal;
L
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1195 1196 1197 1198 1199 1200 1201

	rc = 0;
	doclocal = 0;

	if (portp->tty->termios->c_cflag & CLOCAL)
		doclocal++;

A
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1202
	spin_lock_irqsave(&stli_lock, flags);
L
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1203 1204 1205
	portp->openwaitcnt++;
	if (! tty_hung_up_p(filp))
		portp->refcount--;
A
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1206
	spin_unlock_irqrestore(&stli_lock, flags);
L
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	for (;;) {
		stli_mkasysigs(&portp->asig, 1, 1);
		if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
		    &portp->asig, sizeof(asysigs_t), 0)) < 0)
			break;
		if (tty_hung_up_p(filp) ||
		    ((portp->flags & ASYNC_INITIALIZED) == 0)) {
			if (portp->flags & ASYNC_HUP_NOTIFY)
				rc = -EBUSY;
			else
				rc = -ERESTARTSYS;
			break;
		}
		if (((portp->flags & ASYNC_CLOSING) == 0) &&
		    (doclocal || (portp->sigs & TIOCM_CD))) {
			break;
		}
		if (signal_pending(current)) {
			rc = -ERESTARTSYS;
			break;
		}
		interruptible_sleep_on(&portp->open_wait);
	}

A
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	spin_lock_irqsave(&stli_lock, flags);
L
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1233 1234 1235
	if (! tty_hung_up_p(filp))
		portp->refcount++;
	portp->openwaitcnt--;
A
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1236
	spin_unlock_irqrestore(&stli_lock, flags);
L
Linus Torvalds 已提交
1237

A
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1238
	return rc;
L
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}

/*****************************************************************************/

/*
 *	Write routine. Take the data and put it in the shared memory ring
 *	queue. If port is not already sending chars then need to mark the
 *	service bits for this port.
 */

static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
{
A
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1251 1252 1253 1254 1255
	cdkasy_t __iomem *ap;
	cdkhdr_t __iomem *hdrp;
	unsigned char __iomem *bits;
	unsigned char __iomem *shbuf;
	unsigned char *chbuf;
1256 1257
	struct stliport *portp;
	struct stlibrd *brdp;
A
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1258 1259
	unsigned int len, stlen, head, tail, size;
	unsigned long flags;
L
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1260 1261 1262 1263

	if (tty == stli_txcooktty)
		stli_flushchars(tty);
	portp = tty->driver_data;
A
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1264 1265
	if (portp == NULL)
		return 0;
1266
	if (portp->brdnr >= stli_nrbrds)
A
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1267
		return 0;
L
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1268
	brdp = stli_brds[portp->brdnr];
A
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1269 1270
	if (brdp == NULL)
		return 0;
L
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1271 1272 1273 1274 1275
	chbuf = (unsigned char *) buf;

/*
 *	All data is now local, shove as much as possible into shared memory.
 */
A
Alan Cox 已提交
1276
	spin_lock_irqsave(&brd_lock, flags);
L
Linus Torvalds 已提交
1277
	EBRDENABLE(brdp);
A
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1278 1279 1280 1281 1282
	ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
	head = (unsigned int) readw(&ap->txq.head);
	tail = (unsigned int) readw(&ap->txq.tail);
	if (tail != ((unsigned int) readw(&ap->txq.tail)))
		tail = (unsigned int) readw(&ap->txq.tail);
L
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1283 1284 1285 1286 1287 1288 1289 1290 1291
	size = portp->txsize;
	if (head >= tail) {
		len = size - (head - tail) - 1;
		stlen = size - head;
	} else {
		len = tail - head - 1;
		stlen = len;
	}

1292
	len = min(len, (unsigned int)count);
L
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1293
	count = 0;
A
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1294
	shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
L
Linus Torvalds 已提交
1295 1296

	while (len > 0) {
1297
		stlen = min(len, stlen);
A
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1298
		memcpy_toio(shbuf + head, chbuf, stlen);
L
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		chbuf += stlen;
		len -= stlen;
		count += stlen;
		head += stlen;
		if (head >= size) {
			head = 0;
			stlen = tail;
		}
	}

A
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	ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
	writew(head, &ap->txq.head);
L
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1311
	if (test_bit(ST_TXBUSY, &portp->state)) {
A
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1312 1313
		if (readl(&ap->changed.data) & DT_TXEMPTY)
			writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
L
Linus Torvalds 已提交
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	}
A
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	hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
	bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
L
Linus Torvalds 已提交
1317
		portp->portidx;
A
Alan Cox 已提交
1318
	writeb(readb(bits) | portp->portbit, bits);
L
Linus Torvalds 已提交
1319 1320
	set_bit(ST_TXBUSY, &portp->state);
	EBRDDISABLE(brdp);
A
Alan Cox 已提交
1321
	spin_unlock_irqrestore(&brd_lock, flags);
L
Linus Torvalds 已提交
1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338

	return(count);
}

/*****************************************************************************/

/*
 *	Output a single character. We put it into a temporary local buffer
 *	(for speed) then write out that buffer when the flushchars routine
 *	is called. There is a safety catch here so that if some other port
 *	writes chars before the current buffer has been, then we write them
 *	first them do the new ports.
 */

static void stli_putchar(struct tty_struct *tty, unsigned char ch)
{
	if (tty != stli_txcooktty) {
A
Alan Cox 已提交
1339
		if (stli_txcooktty != NULL)
L
Linus Torvalds 已提交
1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358
			stli_flushchars(stli_txcooktty);
		stli_txcooktty = tty;
	}

	stli_txcookbuf[stli_txcooksize++] = ch;
}

/*****************************************************************************/

/*
 *	Transfer characters from the local TX cooking buffer to the board.
 *	We sort of ignore the tty that gets passed in here. We rely on the
 *	info stored with the TX cook buffer to tell us which port to flush
 *	the data on. In any case we clean out the TX cook buffer, for re-use
 *	by someone else.
 */

static void stli_flushchars(struct tty_struct *tty)
{
A
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1359 1360 1361 1362
	cdkhdr_t __iomem *hdrp;
	unsigned char __iomem *bits;
	cdkasy_t __iomem *ap;
	struct tty_struct *cooktty;
1363 1364
	struct stliport *portp;
	struct stlibrd *brdp;
A
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1365 1366 1367 1368
	unsigned int len, stlen, head, tail, size, count, cooksize;
	unsigned char *buf;
	unsigned char __iomem *shbuf;
	unsigned long flags;
L
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1369 1370 1371 1372 1373

	cooksize = stli_txcooksize;
	cooktty = stli_txcooktty;
	stli_txcooksize = 0;
	stli_txcookrealsize = 0;
A
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1374
	stli_txcooktty = NULL;
L
Linus Torvalds 已提交
1375

A
Alan Cox 已提交
1376
	if (tty == NULL)
L
Linus Torvalds 已提交
1377
		return;
A
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1378
	if (cooktty == NULL)
L
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1379 1380 1381 1382 1383 1384 1385
		return;
	if (tty != cooktty)
		tty = cooktty;
	if (cooksize == 0)
		return;

	portp = tty->driver_data;
A
Alan Cox 已提交
1386
	if (portp == NULL)
L
Linus Torvalds 已提交
1387
		return;
1388
	if (portp->brdnr >= stli_nrbrds)
L
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1389 1390
		return;
	brdp = stli_brds[portp->brdnr];
A
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1391
	if (brdp == NULL)
L
Linus Torvalds 已提交
1392 1393
		return;

A
Alan Cox 已提交
1394
	spin_lock_irqsave(&brd_lock, flags);
L
Linus Torvalds 已提交
1395 1396
	EBRDENABLE(brdp);

A
Alan Cox 已提交
1397 1398 1399 1400 1401
	ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
	head = (unsigned int) readw(&ap->txq.head);
	tail = (unsigned int) readw(&ap->txq.tail);
	if (tail != ((unsigned int) readw(&ap->txq.tail)))
		tail = (unsigned int) readw(&ap->txq.tail);
L
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1402 1403 1404 1405 1406 1407 1408 1409 1410
	size = portp->txsize;
	if (head >= tail) {
		len = size - (head - tail) - 1;
		stlen = size - head;
	} else {
		len = tail - head - 1;
		stlen = len;
	}

1411
	len = min(len, cooksize);
L
Linus Torvalds 已提交
1412
	count = 0;
1413
	shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
L
Linus Torvalds 已提交
1414 1415 1416
	buf = stli_txcookbuf;

	while (len > 0) {
1417
		stlen = min(len, stlen);
A
Alan Cox 已提交
1418
		memcpy_toio(shbuf + head, buf, stlen);
L
Linus Torvalds 已提交
1419 1420 1421 1422 1423 1424 1425 1426 1427 1428
		buf += stlen;
		len -= stlen;
		count += stlen;
		head += stlen;
		if (head >= size) {
			head = 0;
			stlen = tail;
		}
	}

A
Alan Cox 已提交
1429 1430
	ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
	writew(head, &ap->txq.head);
L
Linus Torvalds 已提交
1431 1432

	if (test_bit(ST_TXBUSY, &portp->state)) {
A
Alan Cox 已提交
1433 1434
		if (readl(&ap->changed.data) & DT_TXEMPTY)
			writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
L
Linus Torvalds 已提交
1435
	}
A
Alan Cox 已提交
1436 1437
	hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
	bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
L
Linus Torvalds 已提交
1438
		portp->portidx;
A
Alan Cox 已提交
1439
	writeb(readb(bits) | portp->portbit, bits);
L
Linus Torvalds 已提交
1440 1441 1442
	set_bit(ST_TXBUSY, &portp->state);

	EBRDDISABLE(brdp);
A
Alan Cox 已提交
1443
	spin_unlock_irqrestore(&brd_lock, flags);
L
Linus Torvalds 已提交
1444 1445 1446 1447 1448 1449
}

/*****************************************************************************/

static int stli_writeroom(struct tty_struct *tty)
{
A
Alan Cox 已提交
1450
	cdkasyrq_t __iomem *rp;
1451 1452
	struct stliport *portp;
	struct stlibrd *brdp;
A
Alan Cox 已提交
1453 1454
	unsigned int head, tail, len;
	unsigned long flags;
L
Linus Torvalds 已提交
1455 1456 1457 1458

	if (tty == stli_txcooktty) {
		if (stli_txcookrealsize != 0) {
			len = stli_txcookrealsize - stli_txcooksize;
A
Alan Cox 已提交
1459
			return len;
L
Linus Torvalds 已提交
1460 1461 1462 1463
		}
	}

	portp = tty->driver_data;
A
Alan Cox 已提交
1464 1465
	if (portp == NULL)
		return 0;
1466
	if (portp->brdnr >= stli_nrbrds)
A
Alan Cox 已提交
1467
		return 0;
L
Linus Torvalds 已提交
1468
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1469 1470
	if (brdp == NULL)
		return 0;
L
Linus Torvalds 已提交
1471

A
Alan Cox 已提交
1472
	spin_lock_irqsave(&brd_lock, flags);
L
Linus Torvalds 已提交
1473
	EBRDENABLE(brdp);
A
Alan Cox 已提交
1474 1475 1476 1477 1478
	rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
	head = (unsigned int) readw(&rp->head);
	tail = (unsigned int) readw(&rp->tail);
	if (tail != ((unsigned int) readw(&rp->tail)))
		tail = (unsigned int) readw(&rp->tail);
L
Linus Torvalds 已提交
1479 1480 1481
	len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
	len--;
	EBRDDISABLE(brdp);
A
Alan Cox 已提交
1482
	spin_unlock_irqrestore(&brd_lock, flags);
L
Linus Torvalds 已提交
1483 1484 1485 1486 1487

	if (tty == stli_txcooktty) {
		stli_txcookrealsize = len;
		len -= stli_txcooksize;
	}
A
Alan Cox 已提交
1488
	return len;
L
Linus Torvalds 已提交
1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502
}

/*****************************************************************************/

/*
 *	Return the number of characters in the transmit buffer. Normally we
 *	will return the number of chars in the shared memory ring queue.
 *	We need to kludge around the case where the shared memory buffer is
 *	empty but not all characters have drained yet, for this case just
 *	return that there is 1 character in the buffer!
 */

static int stli_charsinbuffer(struct tty_struct *tty)
{
A
Alan Cox 已提交
1503
	cdkasyrq_t __iomem *rp;
1504 1505
	struct stliport *portp;
	struct stlibrd *brdp;
A
Alan Cox 已提交
1506 1507
	unsigned int head, tail, len;
	unsigned long flags;
L
Linus Torvalds 已提交
1508 1509 1510 1511

	if (tty == stli_txcooktty)
		stli_flushchars(tty);
	portp = tty->driver_data;
A
Alan Cox 已提交
1512 1513
	if (portp == NULL)
		return 0;
1514
	if (portp->brdnr >= stli_nrbrds)
A
Alan Cox 已提交
1515
		return 0;
L
Linus Torvalds 已提交
1516
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1517 1518
	if (brdp == NULL)
		return 0;
L
Linus Torvalds 已提交
1519

A
Alan Cox 已提交
1520
	spin_lock_irqsave(&brd_lock, flags);
L
Linus Torvalds 已提交
1521
	EBRDENABLE(brdp);
A
Alan Cox 已提交
1522 1523 1524 1525 1526
	rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
	head = (unsigned int) readw(&rp->head);
	tail = (unsigned int) readw(&rp->tail);
	if (tail != ((unsigned int) readw(&rp->tail)))
		tail = (unsigned int) readw(&rp->tail);
L
Linus Torvalds 已提交
1527 1528 1529 1530
	len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
	if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
		len = 1;
	EBRDDISABLE(brdp);
A
Alan Cox 已提交
1531
	spin_unlock_irqrestore(&brd_lock, flags);
L
Linus Torvalds 已提交
1532

A
Alan Cox 已提交
1533
	return len;
L
Linus Torvalds 已提交
1534 1535 1536 1537 1538 1539 1540 1541
}

/*****************************************************************************/

/*
 *	Generate the serial struct info.
 */

1542
static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
L
Linus Torvalds 已提交
1543
{
A
Alan Cox 已提交
1544
	struct serial_struct sio;
1545
	struct stlibrd *brdp;
L
Linus Torvalds 已提交
1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559

	memset(&sio, 0, sizeof(struct serial_struct));
	sio.type = PORT_UNKNOWN;
	sio.line = portp->portnr;
	sio.irq = 0;
	sio.flags = portp->flags;
	sio.baud_base = portp->baud_base;
	sio.close_delay = portp->close_delay;
	sio.closing_wait = portp->closing_wait;
	sio.custom_divisor = portp->custom_divisor;
	sio.xmit_fifo_size = 0;
	sio.hub6 = 0;

	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1560
	if (brdp != NULL)
L
Linus Torvalds 已提交
1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574
		sio.port = brdp->iobase;
		
	return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
			-EFAULT : 0;
}

/*****************************************************************************/

/*
 *	Set port according to the serial struct info.
 *	At this point we do not do any auto-configure stuff, so we will
 *	just quietly ignore any requests to change irq, etc.
 */

1575
static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp)
L
Linus Torvalds 已提交
1576
{
A
Alan Cox 已提交
1577 1578
	struct serial_struct sio;
	int rc;
L
Linus Torvalds 已提交
1579 1580 1581 1582 1583 1584 1585 1586

	if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
		return -EFAULT;
	if (!capable(CAP_SYS_ADMIN)) {
		if ((sio.baud_base != portp->baud_base) ||
		    (sio.close_delay != portp->close_delay) ||
		    ((sio.flags & ~ASYNC_USR_MASK) !=
		    (portp->flags & ~ASYNC_USR_MASK)))
A
Alan Cox 已提交
1587
			return -EPERM;
L
Linus Torvalds 已提交
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597
	} 

	portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
		(sio.flags & ASYNC_USR_MASK);
	portp->baud_base = sio.baud_base;
	portp->close_delay = sio.close_delay;
	portp->closing_wait = sio.closing_wait;
	portp->custom_divisor = sio.custom_divisor;

	if ((rc = stli_setport(portp)) < 0)
A
Alan Cox 已提交
1598 1599
		return rc;
	return 0;
L
Linus Torvalds 已提交
1600 1601 1602 1603 1604 1605
}

/*****************************************************************************/

static int stli_tiocmget(struct tty_struct *tty, struct file *file)
{
1606 1607
	struct stliport *portp = tty->driver_data;
	struct stlibrd *brdp;
L
Linus Torvalds 已提交
1608 1609
	int rc;

A
Alan Cox 已提交
1610 1611
	if (portp == NULL)
		return -ENODEV;
1612
	if (portp->brdnr >= stli_nrbrds)
A
Alan Cox 已提交
1613
		return 0;
L
Linus Torvalds 已提交
1614
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1615 1616
	if (brdp == NULL)
		return 0;
L
Linus Torvalds 已提交
1617
	if (tty->flags & (1 << TTY_IO_ERROR))
A
Alan Cox 已提交
1618
		return -EIO;
L
Linus Torvalds 已提交
1619 1620 1621

	if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
			       &portp->asig, sizeof(asysigs_t), 1)) < 0)
A
Alan Cox 已提交
1622
		return rc;
L
Linus Torvalds 已提交
1623 1624 1625 1626 1627 1628 1629

	return stli_mktiocm(portp->asig.sigvalue);
}

static int stli_tiocmset(struct tty_struct *tty, struct file *file,
			 unsigned int set, unsigned int clear)
{
1630 1631
	struct stliport *portp = tty->driver_data;
	struct stlibrd *brdp;
L
Linus Torvalds 已提交
1632 1633
	int rts = -1, dtr = -1;

A
Alan Cox 已提交
1634 1635
	if (portp == NULL)
		return -ENODEV;
1636
	if (portp->brdnr >= stli_nrbrds)
A
Alan Cox 已提交
1637
		return 0;
L
Linus Torvalds 已提交
1638
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1639 1640
	if (brdp == NULL)
		return 0;
L
Linus Torvalds 已提交
1641
	if (tty->flags & (1 << TTY_IO_ERROR))
A
Alan Cox 已提交
1642
		return -EIO;
L
Linus Torvalds 已提交
1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660

	if (set & TIOCM_RTS)
		rts = 1;
	if (set & TIOCM_DTR)
		dtr = 1;
	if (clear & TIOCM_RTS)
		rts = 0;
	if (clear & TIOCM_DTR)
		dtr = 0;

	stli_mkasysigs(&portp->asig, dtr, rts);

	return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
			    sizeof(asysigs_t), 0);
}

static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
{
1661 1662
	struct stliport *portp;
	struct stlibrd *brdp;
A
Alan Cox 已提交
1663 1664
	unsigned int ival;
	int rc;
L
Linus Torvalds 已提交
1665 1666 1667
	void __user *argp = (void __user *)arg;

	portp = tty->driver_data;
A
Alan Cox 已提交
1668 1669
	if (portp == NULL)
		return -ENODEV;
1670
	if (portp->brdnr >= stli_nrbrds)
A
Alan Cox 已提交
1671
		return 0;
L
Linus Torvalds 已提交
1672
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1673 1674
	if (brdp == NULL)
		return 0;
L
Linus Torvalds 已提交
1675 1676 1677 1678

	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
 	    (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
		if (tty->flags & (1 << TTY_IO_ERROR))
A
Alan Cox 已提交
1679
			return -EIO;
L
Linus Torvalds 已提交
1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725
	}

	rc = 0;

	switch (cmd) {
	case TIOCGSOFTCAR:
		rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
			(unsigned __user *) arg);
		break;
	case TIOCSSOFTCAR:
		if ((rc = get_user(ival, (unsigned __user *) arg)) == 0)
			tty->termios->c_cflag =
				(tty->termios->c_cflag & ~CLOCAL) |
				(ival ? CLOCAL : 0);
		break;
	case TIOCGSERIAL:
		rc = stli_getserial(portp, argp);
		break;
	case TIOCSSERIAL:
		rc = stli_setserial(portp, argp);
		break;
	case STL_GETPFLAG:
		rc = put_user(portp->pflag, (unsigned __user *)argp);
		break;
	case STL_SETPFLAG:
		if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
			stli_setport(portp);
		break;
	case COM_GETPORTSTATS:
		rc = stli_getportstats(portp, argp);
		break;
	case COM_CLRPORTSTATS:
		rc = stli_clrportstats(portp, argp);
		break;
	case TIOCSERCONFIG:
	case TIOCSERGWILD:
	case TIOCSERSWILD:
	case TIOCSERGETLSR:
	case TIOCSERGSTRUCT:
	case TIOCSERGETMULTI:
	case TIOCSERSETMULTI:
	default:
		rc = -ENOIOCTLCMD;
		break;
	}

A
Alan Cox 已提交
1726
	return rc;
L
Linus Torvalds 已提交
1727 1728 1729 1730 1731 1732 1733 1734 1735
}

/*****************************************************************************/

/*
 *	This routine assumes that we have user context and can sleep.
 *	Looks like it is true for the current ttys implementation..!!
 */

A
Alan Cox 已提交
1736
static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
L
Linus Torvalds 已提交
1737
{
1738 1739
	struct stliport *portp;
	struct stlibrd *brdp;
A
Alan Cox 已提交
1740
	struct ktermios *tiosp;
A
Alan Cox 已提交
1741
	asyport_t aport;
L
Linus Torvalds 已提交
1742

A
Alan Cox 已提交
1743
	if (tty == NULL)
L
Linus Torvalds 已提交
1744 1745
		return;
	portp = tty->driver_data;
A
Alan Cox 已提交
1746
	if (portp == NULL)
L
Linus Torvalds 已提交
1747
		return;
1748
	if (portp->brdnr >= stli_nrbrds)
L
Linus Torvalds 已提交
1749 1750
		return;
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1751
	if (brdp == NULL)
L
Linus Torvalds 已提交
1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780
		return;

	tiosp = tty->termios;

	stli_mkasyport(portp, &aport, tiosp);
	stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
	stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
	stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
		sizeof(asysigs_t), 0);
	if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
		tty->hw_stopped = 0;
	if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
		wake_up_interruptible(&portp->open_wait);
}

/*****************************************************************************/

/*
 *	Attempt to flow control who ever is sending us data. We won't really
 *	do any flow control action here. We can't directly, and even if we
 *	wanted to we would have to send a command to the slave. The slave
 *	knows how to flow control, and will do so when its buffers reach its
 *	internal high water marks. So what we will do is set a local state
 *	bit that will stop us sending any RX data up from the poll routine
 *	(which is the place where RX data from the slave is handled).
 */

static void stli_throttle(struct tty_struct *tty)
{
1781
	struct stliport	*portp = tty->driver_data;
A
Alan Cox 已提交
1782
	if (portp == NULL)
L
Linus Torvalds 已提交
1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796
		return;
	set_bit(ST_RXSTOP, &portp->state);
}

/*****************************************************************************/

/*
 *	Unflow control the device sending us data... That means that all
 *	we have to do is clear the RXSTOP state bit. The next poll call
 *	will then be able to pass the RX data back up.
 */

static void stli_unthrottle(struct tty_struct *tty)
{
1797
	struct stliport	*portp = tty->driver_data;
A
Alan Cox 已提交
1798
	if (portp == NULL)
L
Linus Torvalds 已提交
1799 1800 1801 1802 1803 1804 1805
		return;
	clear_bit(ST_RXSTOP, &portp->state);
}

/*****************************************************************************/

/*
A
Alan Cox 已提交
1806
 *	Stop the transmitter.
L
Linus Torvalds 已提交
1807 1808 1809 1810 1811 1812 1813 1814 1815
 */

static void stli_stop(struct tty_struct *tty)
{
}

/*****************************************************************************/

/*
A
Alan Cox 已提交
1816
 *	Start the transmitter again.
L
Linus Torvalds 已提交
1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833
 */

static void stli_start(struct tty_struct *tty)
{
}

/*****************************************************************************/

/*
 *	Hangup this port. This is pretty much like closing the port, only
 *	a little more brutal. No waiting for data to drain. Shutdown the
 *	port and maybe drop signals. This is rather tricky really. We want
 *	to close the port as well.
 */

static void stli_hangup(struct tty_struct *tty)
{
1834 1835
	struct stliport *portp;
	struct stlibrd *brdp;
A
Alan Cox 已提交
1836
	unsigned long flags;
L
Linus Torvalds 已提交
1837 1838

	portp = tty->driver_data;
A
Alan Cox 已提交
1839
	if (portp == NULL)
L
Linus Torvalds 已提交
1840
		return;
1841
	if (portp->brdnr >= stli_nrbrds)
L
Linus Torvalds 已提交
1842 1843
		return;
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1844
	if (brdp == NULL)
L
Linus Torvalds 已提交
1845 1846 1847 1848
		return;

	portp->flags &= ~ASYNC_INITIALIZED;

A
Alan Cox 已提交
1849
	if (!test_bit(ST_CLOSING, &portp->state))
L
Linus Torvalds 已提交
1850
		stli_rawclose(brdp, portp, 0, 0);
A
Alan Cox 已提交
1851 1852

	spin_lock_irqsave(&stli_lock, flags);
L
Linus Torvalds 已提交
1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867
	if (tty->termios->c_cflag & HUPCL) {
		stli_mkasysigs(&portp->asig, 0, 0);
		if (test_bit(ST_CMDING, &portp->state)) {
			set_bit(ST_DOSIGS, &portp->state);
			set_bit(ST_DOFLUSHTX, &portp->state);
			set_bit(ST_DOFLUSHRX, &portp->state);
		} else {
			stli_sendcmd(brdp, portp, A_SETSIGNALSF,
				&portp->asig, sizeof(asysigs_t), 0);
		}
	}

	clear_bit(ST_TXBUSY, &portp->state);
	clear_bit(ST_RXSTOP, &portp->state);
	set_bit(TTY_IO_ERROR, &tty->flags);
A
Alan Cox 已提交
1868
	portp->tty = NULL;
L
Linus Torvalds 已提交
1869 1870
	portp->flags &= ~ASYNC_NORMAL_ACTIVE;
	portp->refcount = 0;
A
Alan Cox 已提交
1871 1872
	spin_unlock_irqrestore(&stli_lock, flags);

L
Linus Torvalds 已提交
1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886
	wake_up_interruptible(&portp->open_wait);
}

/*****************************************************************************/

/*
 *	Flush characters from the lower buffer. We may not have user context
 *	so we cannot sleep waiting for it to complete. Also we need to check
 *	if there is chars for this port in the TX cook buffer, and flush them
 *	as well.
 */

static void stli_flushbuffer(struct tty_struct *tty)
{
1887 1888
	struct stliport *portp;
	struct stlibrd *brdp;
A
Alan Cox 已提交
1889
	unsigned long ftype, flags;
L
Linus Torvalds 已提交
1890 1891

	portp = tty->driver_data;
A
Alan Cox 已提交
1892
	if (portp == NULL)
L
Linus Torvalds 已提交
1893
		return;
1894
	if (portp->brdnr >= stli_nrbrds)
L
Linus Torvalds 已提交
1895 1896
		return;
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1897
	if (brdp == NULL)
L
Linus Torvalds 已提交
1898 1899
		return;

A
Alan Cox 已提交
1900
	spin_lock_irqsave(&brd_lock, flags);
L
Linus Torvalds 已提交
1901
	if (tty == stli_txcooktty) {
A
Alan Cox 已提交
1902
		stli_txcooktty = NULL;
L
Linus Torvalds 已提交
1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913
		stli_txcooksize = 0;
		stli_txcookrealsize = 0;
	}
	if (test_bit(ST_CMDING, &portp->state)) {
		set_bit(ST_DOFLUSHTX, &portp->state);
	} else {
		ftype = FLUSHTX;
		if (test_bit(ST_DOFLUSHRX, &portp->state)) {
			ftype |= FLUSHRX;
			clear_bit(ST_DOFLUSHRX, &portp->state);
		}
A
Alan Cox 已提交
1914
		__stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
L
Linus Torvalds 已提交
1915
	}
A
Alan Cox 已提交
1916 1917
	spin_unlock_irqrestore(&brd_lock, flags);
	tty_wakeup(tty);
L
Linus Torvalds 已提交
1918 1919 1920 1921 1922 1923
}

/*****************************************************************************/

static void stli_breakctl(struct tty_struct *tty, int state)
{
1924 1925
	struct stlibrd	*brdp;
	struct stliport	*portp;
L
Linus Torvalds 已提交
1926 1927 1928
	long		arg;

	portp = tty->driver_data;
A
Alan Cox 已提交
1929
	if (portp == NULL)
L
Linus Torvalds 已提交
1930
		return;
1931
	if (portp->brdnr >= stli_nrbrds)
L
Linus Torvalds 已提交
1932 1933
		return;
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1934
	if (brdp == NULL)
L
Linus Torvalds 已提交
1935 1936 1937 1938 1939 1940 1941 1942 1943 1944
		return;

	arg = (state == -1) ? BREAKON : BREAKOFF;
	stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
}

/*****************************************************************************/

static void stli_waituntilsent(struct tty_struct *tty, int timeout)
{
1945
	struct stliport *portp;
A
Alan Cox 已提交
1946
	unsigned long tend;
L
Linus Torvalds 已提交
1947

A
Alan Cox 已提交
1948
	if (tty == NULL)
L
Linus Torvalds 已提交
1949 1950
		return;
	portp = tty->driver_data;
A
Alan Cox 已提交
1951
	if (portp == NULL)
L
Linus Torvalds 已提交
1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
		return;

	if (timeout == 0)
		timeout = HZ;
	tend = jiffies + timeout;

	while (test_bit(ST_TXBUSY, &portp->state)) {
		if (signal_pending(current))
			break;
		msleep_interruptible(20);
		if (time_after_eq(jiffies, tend))
			break;
	}
}

/*****************************************************************************/

static void stli_sendxchar(struct tty_struct *tty, char ch)
{
1971 1972
	struct stlibrd	*brdp;
	struct stliport	*portp;
L
Linus Torvalds 已提交
1973 1974 1975
	asyctrl_t	actrl;

	portp = tty->driver_data;
A
Alan Cox 已提交
1976
	if (portp == NULL)
L
Linus Torvalds 已提交
1977
		return;
1978
	if (portp->brdnr >= stli_nrbrds)
L
Linus Torvalds 已提交
1979 1980
		return;
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
1981
	if (brdp == NULL)
L
Linus Torvalds 已提交
1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
		return;

	memset(&actrl, 0, sizeof(asyctrl_t));
	if (ch == STOP_CHAR(tty)) {
		actrl.rxctrl = CT_STOPFLOW;
	} else if (ch == START_CHAR(tty)) {
		actrl.rxctrl = CT_STARTFLOW;
	} else {
		actrl.txctrl = CT_SENDCHR;
		actrl.tximdch = ch;
	}
	stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
}

/*****************************************************************************/

#define	MAXLINE		80

/*
 *	Format info for a specified port. The line is deliberately limited
 *	to 80 characters. (If it is too long it will be truncated, if too
 *	short then padded with spaces).
 */

2006
static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
L
Linus Torvalds 已提交
2007
{
A
Alan Cox 已提交
2008 2009
	char *sp, *uart;
	int rc, cnt;
L
Linus Torvalds 已提交
2010 2011 2012 2013 2014 2015

	rc = stli_portcmdstats(portp);

	uart = "UNKNOWN";
	if (brdp->state & BST_STARTED) {
		switch (stli_comstats.hwid) {
A
Alan Cox 已提交
2016 2017 2018
		case 0:	uart = "2681"; break;
		case 1:	uart = "SC26198"; break;
		default:uart = "CD1400"; break;
L
Linus Torvalds 已提交
2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068
		}
	}

	sp = pos;
	sp += sprintf(sp, "%d: uart:%s ", portnr, uart);

	if ((brdp->state & BST_STARTED) && (rc >= 0)) {
		sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
			(int) stli_comstats.rxtotal);

		if (stli_comstats.rxframing)
			sp += sprintf(sp, " fe:%d",
				(int) stli_comstats.rxframing);
		if (stli_comstats.rxparity)
			sp += sprintf(sp, " pe:%d",
				(int) stli_comstats.rxparity);
		if (stli_comstats.rxbreaks)
			sp += sprintf(sp, " brk:%d",
				(int) stli_comstats.rxbreaks);
		if (stli_comstats.rxoverrun)
			sp += sprintf(sp, " oe:%d",
				(int) stli_comstats.rxoverrun);

		cnt = sprintf(sp, "%s%s%s%s%s ",
			(stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
			(stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
			(stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
			(stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
			(stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
		*sp = ' ';
		sp += cnt;
	}

	for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
		*sp++ = ' ';
	if (cnt >= MAXLINE)
		pos[(MAXLINE - 2)] = '+';
	pos[(MAXLINE - 1)] = '\n';

	return(MAXLINE);
}

/*****************************************************************************/

/*
 *	Port info, read from the /proc file system.
 */

static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
{
2069 2070
	struct stlibrd *brdp;
	struct stliport *portp;
2071
	unsigned int brdnr, portnr, totalport;
A
Alan Cox 已提交
2072 2073
	int curoff, maxoff;
	char *pos;
L
Linus Torvalds 已提交
2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093

	pos = page;
	totalport = 0;
	curoff = 0;

	if (off == 0) {
		pos += sprintf(pos, "%s: version %s", stli_drvtitle,
			stli_drvversion);
		while (pos < (page + MAXLINE - 1))
			*pos++ = ' ';
		*pos++ = '\n';
	}
	curoff =  MAXLINE;

/*
 *	We scan through for each board, panel and port. The offset is
 *	calculated on the fly, and irrelevant ports are skipped.
 */
	for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
		brdp = stli_brds[brdnr];
A
Alan Cox 已提交
2094
		if (brdp == NULL)
L
Linus Torvalds 已提交
2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108
			continue;
		if (brdp->state == 0)
			continue;

		maxoff = curoff + (brdp->nrports * MAXLINE);
		if (off >= maxoff) {
			curoff = maxoff;
			continue;
		}

		totalport = brdnr * STL_MAXPORTS;
		for (portnr = 0; (portnr < brdp->nrports); portnr++,
		    totalport++) {
			portp = brdp->ports[portnr];
A
Alan Cox 已提交
2109
			if (portp == NULL)
L
Linus Torvalds 已提交
2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135
				continue;
			if (off >= (curoff += MAXLINE))
				continue;
			if ((pos - page + MAXLINE) > count)
				goto stli_readdone;
			pos += stli_portinfo(brdp, portp, totalport, pos);
		}
	}

	*eof = 1;

stli_readdone:
	*start = page;
	return(pos - page);
}

/*****************************************************************************/

/*
 *	Generic send command routine. This will send a message to the slave,
 *	of the specified type with the specified argument. Must be very
 *	careful of data that will be copied out from shared memory -
 *	containing command results. The command completion is all done from
 *	a poll routine that does not have user context. Therefore you cannot
 *	copy back directly into user space, or to the kernel stack of a
 *	process. This routine does not sleep, so can be called from anywhere.
A
Alan Cox 已提交
2136 2137 2138
 *
 *	The caller must hold the brd_lock (see also stli_sendcmd the usual
 *	entry point)
L
Linus Torvalds 已提交
2139 2140
 */

2141
static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
L
Linus Torvalds 已提交
2142
{
A
Alan Cox 已提交
2143 2144 2145
	cdkhdr_t __iomem *hdrp;
	cdkctrl_t __iomem *cp;
	unsigned char __iomem *bits;
L
Linus Torvalds 已提交
2146 2147 2148 2149 2150 2151 2152 2153

	if (test_bit(ST_CMDING, &portp->state)) {
		printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
				(int) cmd);
		return;
	}

	EBRDENABLE(brdp);
A
Alan Cox 已提交
2154
	cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
L
Linus Torvalds 已提交
2155
	if (size > 0) {
A
Alan Cox 已提交
2156
		memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
L
Linus Torvalds 已提交
2157 2158 2159 2160 2161
		if (copyback) {
			portp->argp = arg;
			portp->argsize = size;
		}
	}
A
Alan Cox 已提交
2162 2163 2164 2165
	writel(0, &cp->status);
	writel(cmd, &cp->cmd);
	hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
	bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
L
Linus Torvalds 已提交
2166
		portp->portidx;
A
Alan Cox 已提交
2167
	writeb(readb(bits) | portp->portbit, bits);
L
Linus Torvalds 已提交
2168 2169
	set_bit(ST_CMDING, &portp->state);
	EBRDDISABLE(brdp);
A
Alan Cox 已提交
2170 2171
}

2172
static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
A
Alan Cox 已提交
2173 2174 2175 2176 2177 2178
{
	unsigned long		flags;

	spin_lock_irqsave(&brd_lock, flags);
	__stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
	spin_unlock_irqrestore(&brd_lock, flags);
L
Linus Torvalds 已提交
2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190
}

/*****************************************************************************/

/*
 *	Read data from shared memory. This assumes that the shared memory
 *	is enabled and that interrupts are off. Basically we just empty out
 *	the shared memory buffer into the tty buffer. Must be careful to
 *	handle the case where we fill up the tty buffer, but still have
 *	more chars to unload.
 */

2191
static void stli_read(struct stlibrd *brdp, struct stliport *portp)
L
Linus Torvalds 已提交
2192
{
A
Alan Cox 已提交
2193 2194
	cdkasyrq_t __iomem *rp;
	char __iomem *shbuf;
L
Linus Torvalds 已提交
2195
	struct tty_struct	*tty;
A
Alan Cox 已提交
2196 2197
	unsigned int head, tail, size;
	unsigned int len, stlen;
L
Linus Torvalds 已提交
2198 2199 2200 2201

	if (test_bit(ST_RXSTOP, &portp->state))
		return;
	tty = portp->tty;
A
Alan Cox 已提交
2202
	if (tty == NULL)
L
Linus Torvalds 已提交
2203 2204
		return;

A
Alan Cox 已提交
2205 2206 2207 2208 2209
	rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
	head = (unsigned int) readw(&rp->head);
	if (head != ((unsigned int) readw(&rp->head)))
		head = (unsigned int) readw(&rp->head);
	tail = (unsigned int) readw(&rp->tail);
L
Linus Torvalds 已提交
2210 2211 2212 2213 2214 2215 2216 2217 2218
	size = portp->rxsize;
	if (head >= tail) {
		len = head - tail;
		stlen = len;
	} else {
		len = size - (tail - head);
		stlen = size - tail;
	}

A
Alan Cox 已提交
2219
	len = tty_buffer_request_room(tty, len);
A
Alan Cox 已提交
2220 2221

	shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
L
Linus Torvalds 已提交
2222 2223

	while (len > 0) {
A
Alan Cox 已提交
2224 2225
		unsigned char *cptr;

2226
		stlen = min(len, stlen);
A
Alan Cox 已提交
2227 2228
		tty_prepare_flip_string(tty, &cptr, stlen);
		memcpy_fromio(cptr, shbuf + tail, stlen);
L
Linus Torvalds 已提交
2229 2230 2231 2232 2233 2234 2235
		len -= stlen;
		tail += stlen;
		if (tail >= size) {
			tail = 0;
			stlen = head;
		}
	}
A
Alan Cox 已提交
2236 2237
	rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
	writew(tail, &rp->tail);
L
Linus Torvalds 已提交
2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252

	if (head != tail)
		set_bit(ST_RXING, &portp->state);

	tty_schedule_flip(tty);
}

/*****************************************************************************/

/*
 *	Set up and carry out any delayed commands. There is only a small set
 *	of slave commands that can be done "off-level". So it is not too
 *	difficult to deal with them here.
 */

2253
static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
L
Linus Torvalds 已提交
2254
{
A
Alan Cox 已提交
2255
	int cmd;
L
Linus Torvalds 已提交
2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269

	if (test_bit(ST_DOSIGS, &portp->state)) {
		if (test_bit(ST_DOFLUSHTX, &portp->state) &&
		    test_bit(ST_DOFLUSHRX, &portp->state))
			cmd = A_SETSIGNALSF;
		else if (test_bit(ST_DOFLUSHTX, &portp->state))
			cmd = A_SETSIGNALSFTX;
		else if (test_bit(ST_DOFLUSHRX, &portp->state))
			cmd = A_SETSIGNALSFRX;
		else
			cmd = A_SETSIGNALS;
		clear_bit(ST_DOFLUSHTX, &portp->state);
		clear_bit(ST_DOFLUSHRX, &portp->state);
		clear_bit(ST_DOSIGS, &portp->state);
A
Alan Cox 已提交
2270
		memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
L
Linus Torvalds 已提交
2271
			sizeof(asysigs_t));
A
Alan Cox 已提交
2272 2273
		writel(0, &cp->status);
		writel(cmd, &cp->cmd);
L
Linus Torvalds 已提交
2274 2275 2276 2277 2278 2279 2280
		set_bit(ST_CMDING, &portp->state);
	} else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
	    test_bit(ST_DOFLUSHRX, &portp->state)) {
		cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
		cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
		clear_bit(ST_DOFLUSHTX, &portp->state);
		clear_bit(ST_DOFLUSHRX, &portp->state);
A
Alan Cox 已提交
2281 2282 2283
		memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
		writel(0, &cp->status);
		writel(A_FLUSH, &cp->cmd);
L
Linus Torvalds 已提交
2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300
		set_bit(ST_CMDING, &portp->state);
	}
}

/*****************************************************************************/

/*
 *	Host command service checking. This handles commands or messages
 *	coming from the slave to the host. Must have board shared memory
 *	enabled and interrupts off when called. Notice that by servicing the
 *	read data last we don't need to change the shared memory pointer
 *	during processing (which is a slow IO operation).
 *	Return value indicates if this port is still awaiting actions from
 *	the slave (like open, command, or even TX data being sent). If 0
 *	then port is still busy, otherwise no longer busy.
 */

2301
static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
L
Linus Torvalds 已提交
2302
{
A
Alan Cox 已提交
2303 2304 2305 2306 2307 2308 2309 2310
	cdkasy_t __iomem *ap;
	cdkctrl_t __iomem *cp;
	struct tty_struct *tty;
	asynotify_t nt;
	unsigned long oldsigs;
	int rc, donerx;

	ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
L
Linus Torvalds 已提交
2311 2312 2313 2314 2315 2316
	cp = &ap->ctrl;

/*
 *	Check if we are waiting for an open completion message.
 */
	if (test_bit(ST_OPENING, &portp->state)) {
A
Alan Cox 已提交
2317 2318
		rc = readl(&cp->openarg);
		if (readb(&cp->open) == 0 && rc != 0) {
L
Linus Torvalds 已提交
2319 2320
			if (rc > 0)
				rc--;
A
Alan Cox 已提交
2321
			writel(0, &cp->openarg);
L
Linus Torvalds 已提交
2322 2323 2324 2325 2326 2327 2328 2329 2330 2331
			portp->rc = rc;
			clear_bit(ST_OPENING, &portp->state);
			wake_up_interruptible(&portp->raw_wait);
		}
	}

/*
 *	Check if we are waiting for a close completion message.
 */
	if (test_bit(ST_CLOSING, &portp->state)) {
A
Alan Cox 已提交
2332 2333
		rc = (int) readl(&cp->closearg);
		if (readb(&cp->close) == 0 && rc != 0) {
L
Linus Torvalds 已提交
2334 2335
			if (rc > 0)
				rc--;
A
Alan Cox 已提交
2336
			writel(0, &cp->closearg);
L
Linus Torvalds 已提交
2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347
			portp->rc = rc;
			clear_bit(ST_CLOSING, &portp->state);
			wake_up_interruptible(&portp->raw_wait);
		}
	}

/*
 *	Check if we are waiting for a command completion message. We may
 *	need to copy out the command results associated with this command.
 */
	if (test_bit(ST_CMDING, &portp->state)) {
A
Alan Cox 已提交
2348 2349
		rc = readl(&cp->status);
		if (readl(&cp->cmd) == 0 && rc != 0) {
L
Linus Torvalds 已提交
2350 2351
			if (rc > 0)
				rc--;
A
Alan Cox 已提交
2352 2353
			if (portp->argp != NULL) {
				memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
L
Linus Torvalds 已提交
2354
					portp->argsize);
A
Alan Cox 已提交
2355
				portp->argp = NULL;
L
Linus Torvalds 已提交
2356
			}
A
Alan Cox 已提交
2357
			writel(0, &cp->status);
L
Linus Torvalds 已提交
2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387
			portp->rc = rc;
			clear_bit(ST_CMDING, &portp->state);
			stli_dodelaycmd(portp, cp);
			wake_up_interruptible(&portp->raw_wait);
		}
	}

/*
 *	Check for any notification messages ready. This includes lots of
 *	different types of events - RX chars ready, RX break received,
 *	TX data low or empty in the slave, modem signals changed state.
 */
	donerx = 0;

	if (ap->notify) {
		nt = ap->changed;
		ap->notify = 0;
		tty = portp->tty;

		if (nt.signal & SG_DCD) {
			oldsigs = portp->sigs;
			portp->sigs = stli_mktiocm(nt.sigvalue);
			clear_bit(ST_GETSIGS, &portp->state);
			if ((portp->sigs & TIOCM_CD) &&
			    ((oldsigs & TIOCM_CD) == 0))
				wake_up_interruptible(&portp->open_wait);
			if ((oldsigs & TIOCM_CD) &&
			    ((portp->sigs & TIOCM_CD) == 0)) {
				if (portp->flags & ASYNC_CHECK_CD) {
					if (tty)
2388
						tty_hangup(tty);
L
Linus Torvalds 已提交
2389 2390 2391 2392 2393 2394 2395
				}
			}
		}

		if (nt.data & DT_TXEMPTY)
			clear_bit(ST_TXBUSY, &portp->state);
		if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
A
Alan Cox 已提交
2396 2397 2398
			if (tty != NULL) {
				tty_wakeup(tty);
				EBRDENABLE(brdp);
L
Linus Torvalds 已提交
2399 2400 2401 2402
			}
		}

		if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
A
Alan Cox 已提交
2403
			if (tty != NULL) {
A
Alan Cox 已提交
2404 2405 2406 2407
				tty_insert_flip_char(tty, 0, TTY_BREAK);
				if (portp->flags & ASYNC_SAK) {
					do_SAK(tty);
					EBRDENABLE(brdp);
L
Linus Torvalds 已提交
2408
				}
A
Alan Cox 已提交
2409
				tty_schedule_flip(tty);
L
Linus Torvalds 已提交
2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446
			}
		}

		if (nt.data & DT_RXBUSY) {
			donerx++;
			stli_read(brdp, portp);
		}
	}

/*
 *	It might seem odd that we are checking for more RX chars here.
 *	But, we need to handle the case where the tty buffer was previously
 *	filled, but we had more characters to pass up. The slave will not
 *	send any more RX notify messages until the RX buffer has been emptied.
 *	But it will leave the service bits on (since the buffer is not empty).
 *	So from here we can try to process more RX chars.
 */
	if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
		clear_bit(ST_RXING, &portp->state);
		stli_read(brdp, portp);
	}

	return((test_bit(ST_OPENING, &portp->state) ||
		test_bit(ST_CLOSING, &portp->state) ||
		test_bit(ST_CMDING, &portp->state) ||
		test_bit(ST_TXBUSY, &portp->state) ||
		test_bit(ST_RXING, &portp->state)) ? 0 : 1);
}

/*****************************************************************************/

/*
 *	Service all ports on a particular board. Assumes that the boards
 *	shared memory is enabled, and that the page pointer is pointed
 *	at the cdk header structure.
 */

2447
static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
L
Linus Torvalds 已提交
2448
{
2449
	struct stliport *portp;
A
Alan Cox 已提交
2450 2451 2452 2453 2454
	unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
	unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
	unsigned char __iomem *slavep;
	int bitpos, bitat, bitsize;
	int channr, nrdevs, slavebitchange;
L
Linus Torvalds 已提交
2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465

	bitsize = brdp->bitsize;
	nrdevs = brdp->nrdevs;

/*
 *	Check if slave wants any service. Basically we try to do as
 *	little work as possible here. There are 2 levels of service
 *	bits. So if there is nothing to do we bail early. We check
 *	8 service bits at a time in the inner loop, so we can bypass
 *	the lot if none of them want service.
 */
A
Alan Cox 已提交
2466
	memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
L
Linus Torvalds 已提交
2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492
		bitsize);

	memset(&slavebits[0], 0, bitsize);
	slavebitchange = 0;

	for (bitpos = 0; (bitpos < bitsize); bitpos++) {
		if (hostbits[bitpos] == 0)
			continue;
		channr = bitpos * 8;
		for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
			if (hostbits[bitpos] & bitat) {
				portp = brdp->ports[(channr - 1)];
				if (stli_hostcmd(brdp, portp)) {
					slavebitchange++;
					slavebits[bitpos] |= bitat;
				}
			}
		}
	}

/*
 *	If any of the ports are no longer busy then update them in the
 *	slave request bits. We need to do this after, since a host port
 *	service may initiate more slave requests.
 */
	if (slavebitchange) {
A
Alan Cox 已提交
2493 2494
		hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
		slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
L
Linus Torvalds 已提交
2495
		for (bitpos = 0; (bitpos < bitsize); bitpos++) {
A
Alan Cox 已提交
2496 2497
			if (readb(slavebits + bitpos))
				writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
L
Linus Torvalds 已提交
2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514
		}
	}
}

/*****************************************************************************/

/*
 *	Driver poll routine. This routine polls the boards in use and passes
 *	messages back up to host when necessary. This is actually very
 *	CPU efficient, since we will always have the kernel poll clock, it
 *	adds only a few cycles when idle (since board service can be
 *	determined very easily), but when loaded generates no interrupts
 *	(with their expensive associated context change).
 */

static void stli_poll(unsigned long arg)
{
A
Alan Cox 已提交
2515
	cdkhdr_t __iomem *hdrp;
2516
	struct stlibrd *brdp;
2517
	unsigned int brdnr;
L
Linus Torvalds 已提交
2518

2519
	mod_timer(&stli_timerlist, STLI_TIMEOUT);
L
Linus Torvalds 已提交
2520 2521 2522 2523 2524 2525

/*
 *	Check each board and do any servicing required.
 */
	for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
		brdp = stli_brds[brdnr];
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		if (brdp == NULL)
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2527 2528 2529 2530
			continue;
		if ((brdp->state & BST_STARTED) == 0)
			continue;

A
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2531
		spin_lock(&brd_lock);
L
Linus Torvalds 已提交
2532
		EBRDENABLE(brdp);
A
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2533 2534
		hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
		if (readb(&hdrp->hostreq))
L
Linus Torvalds 已提交
2535 2536
			stli_brdpoll(brdp, hdrp);
		EBRDDISABLE(brdp);
A
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2537
		spin_unlock(&brd_lock);
L
Linus Torvalds 已提交
2538 2539 2540 2541 2542 2543 2544 2545 2546 2547
	}
}

/*****************************************************************************/

/*
 *	Translate the termios settings into the port setting structure of
 *	the slave.
 */

2548
static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp)
L
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{
	memset(pp, 0, sizeof(asyport_t));

/*
 *	Start of by setting the baud, char size, parity and stop bit info.
 */
2555
	pp->baudout = tty_get_baud_rate(portp->tty);
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2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679
	if ((tiosp->c_cflag & CBAUD) == B38400) {
		if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
			pp->baudout = 57600;
		else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
			pp->baudout = 115200;
		else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
			pp->baudout = 230400;
		else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
			pp->baudout = 460800;
		else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
			pp->baudout = (portp->baud_base / portp->custom_divisor);
	}
	if (pp->baudout > STL_MAXBAUD)
		pp->baudout = STL_MAXBAUD;
	pp->baudin = pp->baudout;

	switch (tiosp->c_cflag & CSIZE) {
	case CS5:
		pp->csize = 5;
		break;
	case CS6:
		pp->csize = 6;
		break;
	case CS7:
		pp->csize = 7;
		break;
	default:
		pp->csize = 8;
		break;
	}

	if (tiosp->c_cflag & CSTOPB)
		pp->stopbs = PT_STOP2;
	else
		pp->stopbs = PT_STOP1;

	if (tiosp->c_cflag & PARENB) {
		if (tiosp->c_cflag & PARODD)
			pp->parity = PT_ODDPARITY;
		else
			pp->parity = PT_EVENPARITY;
	} else {
		pp->parity = PT_NOPARITY;
	}

/*
 *	Set up any flow control options enabled.
 */
	if (tiosp->c_iflag & IXON) {
		pp->flow |= F_IXON;
		if (tiosp->c_iflag & IXANY)
			pp->flow |= F_IXANY;
	}
	if (tiosp->c_cflag & CRTSCTS)
		pp->flow |= (F_RTSFLOW | F_CTSFLOW);

	pp->startin = tiosp->c_cc[VSTART];
	pp->stopin = tiosp->c_cc[VSTOP];
	pp->startout = tiosp->c_cc[VSTART];
	pp->stopout = tiosp->c_cc[VSTOP];

/*
 *	Set up the RX char marking mask with those RX error types we must
 *	catch. We can get the slave to help us out a little here, it will
 *	ignore parity errors and breaks for us, and mark parity errors in
 *	the data stream.
 */
	if (tiosp->c_iflag & IGNPAR)
		pp->iflag |= FI_IGNRXERRS;
	if (tiosp->c_iflag & IGNBRK)
		pp->iflag |= FI_IGNBREAK;

	portp->rxmarkmsk = 0;
	if (tiosp->c_iflag & (INPCK | PARMRK))
		pp->iflag |= FI_1MARKRXERRS;
	if (tiosp->c_iflag & BRKINT)
		portp->rxmarkmsk |= BRKINT;

/*
 *	Set up clocal processing as required.
 */
	if (tiosp->c_cflag & CLOCAL)
		portp->flags &= ~ASYNC_CHECK_CD;
	else
		portp->flags |= ASYNC_CHECK_CD;

/*
 *	Transfer any persistent flags into the asyport structure.
 */
	pp->pflag = (portp->pflag & 0xffff);
	pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
	pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
	pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
}

/*****************************************************************************/

/*
 *	Construct a slave signals structure for setting the DTR and RTS
 *	signals as specified.
 */

static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
{
	memset(sp, 0, sizeof(asysigs_t));
	if (dtr >= 0) {
		sp->signal |= SG_DTR;
		sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
	}
	if (rts >= 0) {
		sp->signal |= SG_RTS;
		sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
	}
}

/*****************************************************************************/

/*
 *	Convert the signals returned from the slave into a local TIOCM type
 *	signals value. We keep them locally in TIOCM format.
 */

static long stli_mktiocm(unsigned long sigvalue)
{
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2680
	long	tiocm = 0;
L
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2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696
	tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
	tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
	tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
	tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
	tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
	tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
	return(tiocm);
}

/*****************************************************************************/

/*
 *	All panels and ports actually attached have been worked out. All
 *	we need to do here is set up the appropriate per port data structures.
 */

2697
static int stli_initports(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2698
{
2699
	struct stliport	*portp;
2700
	unsigned int i, panelnr, panelport;
L
Linus Torvalds 已提交
2701 2702

	for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2703
		portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
2704
		if (!portp) {
L
Linus Torvalds 已提交
2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726
			printk("STALLION: failed to allocate port structure\n");
			continue;
		}

		portp->magic = STLI_PORTMAGIC;
		portp->portnr = i;
		portp->brdnr = brdp->brdnr;
		portp->panelnr = panelnr;
		portp->baud_base = STL_BAUDBASE;
		portp->close_delay = STL_CLOSEDELAY;
		portp->closing_wait = 30 * HZ;
		init_waitqueue_head(&portp->open_wait);
		init_waitqueue_head(&portp->close_wait);
		init_waitqueue_head(&portp->raw_wait);
		panelport++;
		if (panelport >= brdp->panels[panelnr]) {
			panelport = 0;
			panelnr++;
		}
		brdp->ports[i] = portp;
	}

A
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2727
	return 0;
L
Linus Torvalds 已提交
2728 2729 2730 2731 2732 2733 2734 2735
}

/*****************************************************************************/

/*
 *	All the following routines are board specific hardware operations.
 */

2736
static void stli_ecpinit(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750
{
	unsigned long	memconf;

	outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
	udelay(10);
	outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
	udelay(100);

	memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
	outb(memconf, (brdp->iobase + ECP_ATMEMAR));
}

/*****************************************************************************/

2751
static void stli_ecpenable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2752 2753 2754 2755 2756 2757
{	
	outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
}

/*****************************************************************************/

2758
static void stli_ecpdisable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2759 2760 2761 2762 2763 2764
{	
	outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
}

/*****************************************************************************/

2765
static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
L
Linus Torvalds 已提交
2766
{	
2767
	void __iomem *ptr;
A
Alan Cox 已提交
2768
	unsigned char val;
L
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2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785

	if (offset > brdp->memsize) {
		printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
				"range at line=%d(%d), brd=%d\n",
			(int) offset, line, __LINE__, brdp->brdnr);
		ptr = NULL;
		val = 0;
	} else {
		ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
		val = (unsigned char) (offset / ECP_ATPAGESIZE);
	}
	outb(val, (brdp->iobase + ECP_ATMEMPR));
	return(ptr);
}

/*****************************************************************************/

2786
static void stli_ecpreset(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2787 2788 2789 2790 2791 2792 2793 2794 2795
{	
	outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
	udelay(10);
	outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
	udelay(500);
}

/*****************************************************************************/

2796
static void stli_ecpintr(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2797 2798 2799 2800 2801 2802 2803 2804 2805 2806
{	
	outb(0x1, brdp->iobase);
}

/*****************************************************************************/

/*
 *	The following set of functions act on ECP EISA boards.
 */

2807
static void stli_ecpeiinit(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824
{
	unsigned long	memconf;

	outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
	outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
	udelay(10);
	outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
	udelay(500);

	memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
	outb(memconf, (brdp->iobase + ECP_EIMEMARL));
	memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
	outb(memconf, (brdp->iobase + ECP_EIMEMARH));
}

/*****************************************************************************/

2825
static void stli_ecpeienable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2826 2827 2828 2829 2830 2831
{	
	outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
}

/*****************************************************************************/

2832
static void stli_ecpeidisable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2833 2834 2835 2836 2837 2838
{	
	outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
}

/*****************************************************************************/

2839
static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
L
Linus Torvalds 已提交
2840
{	
2841
	void __iomem *ptr;
L
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2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862
	unsigned char	val;

	if (offset > brdp->memsize) {
		printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
				"range at line=%d(%d), brd=%d\n",
			(int) offset, line, __LINE__, brdp->brdnr);
		ptr = NULL;
		val = 0;
	} else {
		ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
		if (offset < ECP_EIPAGESIZE)
			val = ECP_EIENABLE;
		else
			val = ECP_EIENABLE | 0x40;
	}
	outb(val, (brdp->iobase + ECP_EICONFR));
	return(ptr);
}

/*****************************************************************************/

2863
static void stli_ecpeireset(struct stlibrd *brdp)
L
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2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876
{	
	outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
	udelay(10);
	outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
	udelay(500);
}

/*****************************************************************************/

/*
 *	The following set of functions act on ECP MCA boards.
 */

2877
static void stli_ecpmcenable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2878 2879 2880 2881 2882 2883
{	
	outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
}

/*****************************************************************************/

2884
static void stli_ecpmcdisable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2885 2886 2887 2888 2889 2890
{	
	outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
}

/*****************************************************************************/

2891
static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
L
Linus Torvalds 已提交
2892
{	
2893
	void __iomem *ptr;
A
Alan Cox 已提交
2894
	unsigned char val;
L
Linus Torvalds 已提交
2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911

	if (offset > brdp->memsize) {
		printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
				"range at line=%d(%d), brd=%d\n",
			(int) offset, line, __LINE__, brdp->brdnr);
		ptr = NULL;
		val = 0;
	} else {
		ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
		val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
	}
	outb(val, (brdp->iobase + ECP_MCCONFR));
	return(ptr);
}

/*****************************************************************************/

2912
static void stli_ecpmcreset(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925
{	
	outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
	udelay(10);
	outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
	udelay(500);
}

/*****************************************************************************/

/*
 *	The following set of functions act on ECP PCI boards.
 */

2926
static void stli_ecppciinit(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2927 2928 2929 2930 2931 2932 2933 2934 2935
{
	outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
	udelay(10);
	outb(0, (brdp->iobase + ECP_PCICONFR));
	udelay(500);
}

/*****************************************************************************/

2936
static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
L
Linus Torvalds 已提交
2937
{	
2938
	void __iomem *ptr;
L
Linus Torvalds 已提交
2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956
	unsigned char	val;

	if (offset > brdp->memsize) {
		printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
				"range at line=%d(%d), board=%d\n",
				(int) offset, line, __LINE__, brdp->brdnr);
		ptr = NULL;
		val = 0;
	} else {
		ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
		val = (offset / ECP_PCIPAGESIZE) << 1;
	}
	outb(val, (brdp->iobase + ECP_PCICONFR));
	return(ptr);
}

/*****************************************************************************/

2957
static void stli_ecppcireset(struct stlibrd *brdp)
L
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2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970
{	
	outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
	udelay(10);
	outb(0, (brdp->iobase + ECP_PCICONFR));
	udelay(500);
}

/*****************************************************************************/

/*
 *	The following routines act on ONboards.
 */

2971
static void stli_onbinit(struct stlibrd *brdp)
L
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2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987
{
	unsigned long	memconf;

	outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
	udelay(10);
	outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
	mdelay(1000);

	memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
	outb(memconf, (brdp->iobase + ONB_ATMEMAR));
	outb(0x1, brdp->iobase);
	mdelay(1);
}

/*****************************************************************************/

2988
static void stli_onbenable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2989 2990 2991 2992 2993 2994
{	
	outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
}

/*****************************************************************************/

2995
static void stli_onbdisable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
2996 2997 2998 2999 3000 3001
{	
	outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
}

/*****************************************************************************/

3002
static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
L
Linus Torvalds 已提交
3003
{	
3004
	void __iomem *ptr;
L
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3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018

	if (offset > brdp->memsize) {
		printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
				"range at line=%d(%d), brd=%d\n",
				(int) offset, line, __LINE__, brdp->brdnr);
		ptr = NULL;
	} else {
		ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
	}
	return(ptr);
}

/*****************************************************************************/

3019
static void stli_onbreset(struct stlibrd *brdp)
L
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3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032
{	
	outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
	udelay(10);
	outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
	mdelay(1000);
}

/*****************************************************************************/

/*
 *	The following routines act on ONboard EISA.
 */

3033
static void stli_onbeinit(struct stlibrd *brdp)
L
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3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052
{
	unsigned long	memconf;

	outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
	outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
	udelay(10);
	outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
	mdelay(1000);

	memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
	outb(memconf, (brdp->iobase + ONB_EIMEMARL));
	memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
	outb(memconf, (brdp->iobase + ONB_EIMEMARH));
	outb(0x1, brdp->iobase);
	mdelay(1);
}

/*****************************************************************************/

3053
static void stli_onbeenable(struct stlibrd *brdp)
L
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3054 3055 3056 3057 3058 3059
{	
	outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
}

/*****************************************************************************/

3060
static void stli_onbedisable(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3061 3062 3063 3064 3065 3066
{	
	outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
}

/*****************************************************************************/

3067
static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
L
Linus Torvalds 已提交
3068
{	
3069
	void __iomem *ptr;
A
Alan Cox 已提交
3070
	unsigned char val;
L
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3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090

	if (offset > brdp->memsize) {
		printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
				"range at line=%d(%d), brd=%d\n",
			(int) offset, line, __LINE__, brdp->brdnr);
		ptr = NULL;
		val = 0;
	} else {
		ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
		if (offset < ONB_EIPAGESIZE)
			val = ONB_EIENABLE;
		else
			val = ONB_EIENABLE | 0x40;
	}
	outb(val, (brdp->iobase + ONB_EICONFR));
	return(ptr);
}

/*****************************************************************************/

3091
static void stli_onbereset(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104
{	
	outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
	udelay(10);
	outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
	mdelay(1000);
}

/*****************************************************************************/

/*
 *	The following routines act on Brumby boards.
 */

3105
static void stli_bbyinit(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116
{
	outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
	udelay(10);
	outb(0, (brdp->iobase + BBY_ATCONFR));
	mdelay(1000);
	outb(0x1, brdp->iobase);
	mdelay(1);
}

/*****************************************************************************/

3117
static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
L
Linus Torvalds 已提交
3118
{	
3119
	void __iomem *ptr;
A
Alan Cox 已提交
3120
	unsigned char val;
L
Linus Torvalds 已提交
3121

A
Alan Cox 已提交
3122
	BUG_ON(offset > brdp->memsize);
L
Linus Torvalds 已提交
3123

A
Alan Cox 已提交
3124 3125
	ptr = brdp->membase + (offset % BBY_PAGESIZE);
	val = (unsigned char) (offset / BBY_PAGESIZE);
L
Linus Torvalds 已提交
3126 3127 3128 3129 3130 3131
	outb(val, (brdp->iobase + BBY_ATCONFR));
	return(ptr);
}

/*****************************************************************************/

3132
static void stli_bbyreset(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145
{	
	outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
	udelay(10);
	outb(0, (brdp->iobase + BBY_ATCONFR));
	mdelay(1000);
}

/*****************************************************************************/

/*
 *	The following routines act on original old Stallion boards.
 */

3146
static void stli_stalinit(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3147 3148 3149 3150 3151 3152 3153
{
	outb(0x1, brdp->iobase);
	mdelay(1000);
}

/*****************************************************************************/

3154
static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
L
Linus Torvalds 已提交
3155
{	
A
Alan Cox 已提交
3156 3157
	BUG_ON(offset > brdp->memsize);
	return brdp->membase + (offset % STAL_PAGESIZE);
L
Linus Torvalds 已提交
3158 3159 3160 3161
}

/*****************************************************************************/

3162
static void stli_stalreset(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3163
{	
A
Alan Cox 已提交
3164
	u32 __iomem *vecp;
L
Linus Torvalds 已提交
3165

A
Alan Cox 已提交
3166 3167
	vecp = (u32 __iomem *) (brdp->membase + 0x30);
	writel(0xffff0000, vecp);
L
Linus Torvalds 已提交
3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178
	outb(0, brdp->iobase);
	mdelay(1000);
}

/*****************************************************************************/

/*
 *	Try to find an ECP board and initialize it. This handles only ECP
 *	board types.
 */

3179
static int stli_initecp(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3180
{
A
Alan Cox 已提交
3181 3182 3183 3184
	cdkecpsig_t sig;
	cdkecpsig_t __iomem *sigsp;
	unsigned int status, nxtid;
	char *name;
3185
	int retval, panelnr, nrports;
L
Linus Torvalds 已提交
3186

3187 3188 3189 3190 3191
	if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
		retval = -ENODEV;
		goto err;
	}

I
Ingo Korb 已提交
3192 3193
	brdp->iosize = ECP_IOSIZE;

3194 3195 3196
	if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
		retval = -EIO;
		goto err;
L
Linus Torvalds 已提交
3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257
	}

/*
 *	Based on the specific board type setup the common vars to access
 *	and enable shared memory. Set all board specific information now
 *	as well.
 */
	switch (brdp->brdtype) {
	case BRD_ECP:
		brdp->memsize = ECP_MEMSIZE;
		brdp->pagesize = ECP_ATPAGESIZE;
		brdp->init = stli_ecpinit;
		brdp->enable = stli_ecpenable;
		brdp->reenable = stli_ecpenable;
		brdp->disable = stli_ecpdisable;
		brdp->getmemptr = stli_ecpgetmemptr;
		brdp->intr = stli_ecpintr;
		brdp->reset = stli_ecpreset;
		name = "serial(EC8/64)";
		break;

	case BRD_ECPE:
		brdp->memsize = ECP_MEMSIZE;
		brdp->pagesize = ECP_EIPAGESIZE;
		brdp->init = stli_ecpeiinit;
		brdp->enable = stli_ecpeienable;
		brdp->reenable = stli_ecpeienable;
		brdp->disable = stli_ecpeidisable;
		brdp->getmemptr = stli_ecpeigetmemptr;
		brdp->intr = stli_ecpintr;
		brdp->reset = stli_ecpeireset;
		name = "serial(EC8/64-EI)";
		break;

	case BRD_ECPMC:
		brdp->memsize = ECP_MEMSIZE;
		brdp->pagesize = ECP_MCPAGESIZE;
		brdp->init = NULL;
		brdp->enable = stli_ecpmcenable;
		brdp->reenable = stli_ecpmcenable;
		brdp->disable = stli_ecpmcdisable;
		brdp->getmemptr = stli_ecpmcgetmemptr;
		brdp->intr = stli_ecpintr;
		brdp->reset = stli_ecpmcreset;
		name = "serial(EC8/64-MCA)";
		break;

	case BRD_ECPPCI:
		brdp->memsize = ECP_PCIMEMSIZE;
		brdp->pagesize = ECP_PCIPAGESIZE;
		brdp->init = stli_ecppciinit;
		brdp->enable = NULL;
		brdp->reenable = NULL;
		brdp->disable = NULL;
		brdp->getmemptr = stli_ecppcigetmemptr;
		brdp->intr = stli_ecpintr;
		brdp->reset = stli_ecppcireset;
		name = "serial(EC/RA-PCI)";
		break;

	default:
3258 3259
		retval = -EINVAL;
		goto err_reg;
L
Linus Torvalds 已提交
3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270
	}

/*
 *	The per-board operations structure is all set up, so now let's go
 *	and get the board operational. Firstly initialize board configuration
 *	registers. Set the memory mapping info so we can get at the boards
 *	shared memory.
 */
	EBRDINIT(brdp);

	brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3271 3272 3273
	if (brdp->membase == NULL) {
		retval = -ENOMEM;
		goto err_reg;
L
Linus Torvalds 已提交
3274 3275 3276 3277 3278 3279 3280 3281
	}

/*
 *	Now that all specific code is set up, enable the shared memory and
 *	look for the a signature area that will tell us exactly what board
 *	this is, and what it is connected to it.
 */
	EBRDENABLE(brdp);
A
Alan Cox 已提交
3282
	sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3283
	memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
L
Linus Torvalds 已提交
3284 3285
	EBRDDISABLE(brdp);

3286 3287 3288
	if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
		retval = -ENODEV;
		goto err_unmap;
L
Linus Torvalds 已提交
3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311
	}

/*
 *	Scan through the signature looking at the panels connected to the
 *	board. Calculate the total number of ports as we go.
 */
	for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
		status = sig.panelid[nxtid];
		if ((status & ECH_PNLIDMASK) != nxtid)
			break;

		brdp->panelids[panelnr] = status;
		nrports = (status & ECH_PNL16PORT) ? 16 : 8;
		if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
			nxtid++;
		brdp->panels[panelnr] = nrports;
		brdp->nrports += nrports;
		nxtid++;
		brdp->nrpanels++;
	}


	brdp->state |= BST_FOUND;
A
Alan Cox 已提交
3312
	return 0;
3313 3314 3315 3316 3317 3318 3319
err_unmap:
	iounmap(brdp->membase);
	brdp->membase = NULL;
err_reg:
	release_region(brdp->iobase, brdp->iosize);
err:
	return retval;
L
Linus Torvalds 已提交
3320 3321 3322 3323 3324 3325 3326 3327 3328
}

/*****************************************************************************/

/*
 *	Try to find an ONboard, Brumby or Stallion board and initialize it.
 *	This handles only these board types.
 */

3329
static int stli_initonb(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3330
{
A
Alan Cox 已提交
3331 3332 3333
	cdkonbsig_t sig;
	cdkonbsig_t __iomem *sigsp;
	char *name;
3334
	int i, retval;
L
Linus Torvalds 已提交
3335 3336 3337 3338

/*
 *	Do a basic sanity check on the IO and memory addresses.
 */
3339 3340 3341 3342
	if (brdp->iobase == 0 || brdp->memaddr == 0) {
		retval = -ENODEV;
		goto err;
	}
L
Linus Torvalds 已提交
3343 3344 3345

	brdp->iosize = ONB_IOSIZE;
	
3346 3347 3348 3349
	if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
		retval = -EIO;
		goto err;
	}
L
Linus Torvalds 已提交
3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414

/*
 *	Based on the specific board type setup the common vars to access
 *	and enable shared memory. Set all board specific information now
 *	as well.
 */
	switch (brdp->brdtype) {
	case BRD_ONBOARD:
	case BRD_ONBOARD2:
		brdp->memsize = ONB_MEMSIZE;
		brdp->pagesize = ONB_ATPAGESIZE;
		brdp->init = stli_onbinit;
		brdp->enable = stli_onbenable;
		brdp->reenable = stli_onbenable;
		brdp->disable = stli_onbdisable;
		brdp->getmemptr = stli_onbgetmemptr;
		brdp->intr = stli_ecpintr;
		brdp->reset = stli_onbreset;
		if (brdp->memaddr > 0x100000)
			brdp->enabval = ONB_MEMENABHI;
		else
			brdp->enabval = ONB_MEMENABLO;
		name = "serial(ONBoard)";
		break;

	case BRD_ONBOARDE:
		brdp->memsize = ONB_EIMEMSIZE;
		brdp->pagesize = ONB_EIPAGESIZE;
		brdp->init = stli_onbeinit;
		brdp->enable = stli_onbeenable;
		brdp->reenable = stli_onbeenable;
		brdp->disable = stli_onbedisable;
		brdp->getmemptr = stli_onbegetmemptr;
		brdp->intr = stli_ecpintr;
		brdp->reset = stli_onbereset;
		name = "serial(ONBoard/E)";
		break;

	case BRD_BRUMBY4:
		brdp->memsize = BBY_MEMSIZE;
		brdp->pagesize = BBY_PAGESIZE;
		brdp->init = stli_bbyinit;
		brdp->enable = NULL;
		brdp->reenable = NULL;
		brdp->disable = NULL;
		brdp->getmemptr = stli_bbygetmemptr;
		brdp->intr = stli_ecpintr;
		brdp->reset = stli_bbyreset;
		name = "serial(Brumby)";
		break;

	case BRD_STALLION:
		brdp->memsize = STAL_MEMSIZE;
		brdp->pagesize = STAL_PAGESIZE;
		brdp->init = stli_stalinit;
		brdp->enable = NULL;
		brdp->reenable = NULL;
		brdp->disable = NULL;
		brdp->getmemptr = stli_stalgetmemptr;
		brdp->intr = stli_ecpintr;
		brdp->reset = stli_stalreset;
		name = "serial(Stallion)";
		break;

	default:
3415 3416
		retval = -EINVAL;
		goto err_reg;
L
Linus Torvalds 已提交
3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427
	}

/*
 *	The per-board operations structure is all set up, so now let's go
 *	and get the board operational. Firstly initialize board configuration
 *	registers. Set the memory mapping info so we can get at the boards
 *	shared memory.
 */
	EBRDINIT(brdp);

	brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3428 3429 3430
	if (brdp->membase == NULL) {
		retval = -ENOMEM;
		goto err_reg;
L
Linus Torvalds 已提交
3431 3432 3433 3434 3435 3436 3437 3438
	}

/*
 *	Now that all specific code is set up, enable the shared memory and
 *	look for the a signature area that will tell us exactly what board
 *	this is, and how many ports.
 */
	EBRDENABLE(brdp);
A
Alan Cox 已提交
3439 3440
	sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
	memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
L
Linus Torvalds 已提交
3441 3442
	EBRDDISABLE(brdp);

A
Alan Cox 已提交
3443 3444 3445
	if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
	    sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
	    sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3446 3447 3448
	    sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
		retval = -ENODEV;
		goto err_unmap;
L
Linus Torvalds 已提交
3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468
	}

/*
 *	Scan through the signature alive mask and calculate how many ports
 *	there are on this board.
 */
	brdp->nrpanels = 1;
	if (sig.amask1) {
		brdp->nrports = 32;
	} else {
		for (i = 0; (i < 16); i++) {
			if (((sig.amask0 << i) & 0x8000) == 0)
				break;
		}
		brdp->nrports = i;
	}
	brdp->panels[0] = brdp->nrports;


	brdp->state |= BST_FOUND;
A
Alan Cox 已提交
3469
	return 0;
3470 3471 3472 3473 3474 3475 3476
err_unmap:
	iounmap(brdp->membase);
	brdp->membase = NULL;
err_reg:
	release_region(brdp->iobase, brdp->iosize);
err:
	return retval;
L
Linus Torvalds 已提交
3477 3478 3479 3480 3481 3482 3483 3484 3485 3486
}

/*****************************************************************************/

/*
 *	Start up a running board. This routine is only called after the
 *	code has been down loaded to the board and is operational. It will
 *	read in the memory map, and get the show on the road...
 */

3487
static int stli_startbrd(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3488
{
A
Alan Cox 已提交
3489 3490 3491 3492
	cdkhdr_t __iomem *hdrp;
	cdkmem_t __iomem *memp;
	cdkasy_t __iomem *ap;
	unsigned long flags;
3493
	unsigned int portnr, nrdevs, i;
3494
	struct stliport *portp;
3495
	int rc = 0;
A
Alan Cox 已提交
3496 3497 3498
	u32 memoff;

	spin_lock_irqsave(&brd_lock, flags);
L
Linus Torvalds 已提交
3499
	EBRDENABLE(brdp);
A
Alan Cox 已提交
3500
	hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
L
Linus Torvalds 已提交
3501 3502 3503 3504 3505
	nrdevs = hdrp->nrdevs;

#if 0
	printk("%s(%d): CDK version %d.%d.%d --> "
		"nrdevs=%d memp=%x hostp=%x slavep=%x\n",
A
Alan Cox 已提交
3506 3507 3508
		 __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
		 readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
		 readl(&hdrp->slavep));
L
Linus Torvalds 已提交
3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519
#endif

	if (nrdevs < (brdp->nrports + 1)) {
		printk(KERN_ERR "STALLION: slave failed to allocate memory for "
				"all devices, devices=%d\n", nrdevs);
		brdp->nrports = nrdevs - 1;
	}
	brdp->nrdevs = nrdevs;
	brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
	brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
	brdp->bitsize = (nrdevs + 7) / 8;
A
Alan Cox 已提交
3520 3521
	memoff = readl(&hdrp->memp);
	if (memoff > brdp->memsize) {
L
Linus Torvalds 已提交
3522 3523 3524 3525
		printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
		rc = -EIO;
		goto stli_donestartup;
	}
A
Alan Cox 已提交
3526 3527
	memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
	if (readw(&memp->dtype) != TYP_ASYNCTRL) {
L
Linus Torvalds 已提交
3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538
		printk(KERN_ERR "STALLION: no slave control device found\n");
		goto stli_donestartup;
	}
	memp++;

/*
 *	Cycle through memory allocation of each port. We are guaranteed to
 *	have all ports inside the first page of slave window, so no need to
 *	change pages while reading memory map.
 */
	for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
A
Alan Cox 已提交
3539
		if (readw(&memp->dtype) != TYP_ASYNC)
L
Linus Torvalds 已提交
3540 3541
			break;
		portp = brdp->ports[portnr];
A
Alan Cox 已提交
3542
		if (portp == NULL)
L
Linus Torvalds 已提交
3543 3544
			break;
		portp->devnr = i;
A
Alan Cox 已提交
3545
		portp->addr = readl(&memp->offset);
L
Linus Torvalds 已提交
3546 3547 3548 3549 3550
		portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
		portp->portidx = (unsigned char) (i / 8);
		portp->portbit = (unsigned char) (0x1 << (i % 8));
	}

A
Alan Cox 已提交
3551
	writeb(0xff, &hdrp->slavereq);
L
Linus Torvalds 已提交
3552 3553 3554 3555 3556 3557 3558 3559

/*
 *	For each port setup a local copy of the RX and TX buffer offsets
 *	and sizes. We do this separate from the above, because we need to
 *	move the shared memory page...
 */
	for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
		portp = brdp->ports[portnr];
A
Alan Cox 已提交
3560
		if (portp == NULL)
L
Linus Torvalds 已提交
3561 3562 3563
			break;
		if (portp->addr == 0)
			break;
A
Alan Cox 已提交
3564 3565 3566 3567 3568 3569
		ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
		if (ap != NULL) {
			portp->rxsize = readw(&ap->rxq.size);
			portp->txsize = readw(&ap->txq.size);
			portp->rxoffset = readl(&ap->rxq.offset);
			portp->txoffset = readl(&ap->txq.offset);
L
Linus Torvalds 已提交
3570 3571 3572 3573 3574
		}
	}

stli_donestartup:
	EBRDDISABLE(brdp);
A
Alan Cox 已提交
3575
	spin_unlock_irqrestore(&brd_lock, flags);
L
Linus Torvalds 已提交
3576 3577 3578 3579 3580 3581

	if (rc == 0)
		brdp->state |= BST_STARTED;

	if (! stli_timeron) {
		stli_timeron++;
3582
		mod_timer(&stli_timerlist, STLI_TIMEOUT);
L
Linus Torvalds 已提交
3583 3584
	}

A
Alan Cox 已提交
3585
	return rc;
L
Linus Torvalds 已提交
3586 3587 3588 3589 3590 3591 3592 3593
}

/*****************************************************************************/

/*
 *	Probe and initialize the specified board.
 */

3594
static int __devinit stli_brdinit(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3595
{
3596 3597
	int retval;

L
Linus Torvalds 已提交
3598 3599 3600 3601 3602
	switch (brdp->brdtype) {
	case BRD_ECP:
	case BRD_ECPE:
	case BRD_ECPMC:
	case BRD_ECPPCI:
3603
		retval = stli_initecp(brdp);
L
Linus Torvalds 已提交
3604 3605 3606 3607 3608 3609
		break;
	case BRD_ONBOARD:
	case BRD_ONBOARDE:
	case BRD_ONBOARD2:
	case BRD_BRUMBY4:
	case BRD_STALLION:
3610
		retval = stli_initonb(brdp);
L
Linus Torvalds 已提交
3611 3612 3613 3614
		break;
	default:
		printk(KERN_ERR "STALLION: board=%d is unknown board "
				"type=%d\n", brdp->brdnr, brdp->brdtype);
3615
		retval = -ENODEV;
L
Linus Torvalds 已提交
3616 3617
	}

3618 3619
	if (retval)
		return retval;
L
Linus Torvalds 已提交
3620 3621 3622 3623 3624 3625

	stli_initports(brdp);
	printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
		"nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
		brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
		brdp->nrpanels, brdp->nrports);
A
Alan Cox 已提交
3626
	return 0;
L
Linus Torvalds 已提交
3627 3628
}

3629
#if STLI_EISAPROBE != 0
L
Linus Torvalds 已提交
3630 3631 3632 3633 3634 3635 3636
/*****************************************************************************/

/*
 *	Probe around trying to find where the EISA boards shared memory
 *	might be. This is a bit if hack, but it is the best we can do.
 */

3637
static int stli_eisamemprobe(struct stlibrd *brdp)
L
Linus Torvalds 已提交
3638
{
A
Alan Cox 已提交
3639 3640
	cdkecpsig_t	ecpsig, __iomem *ecpsigp;
	cdkonbsig_t	onbsig, __iomem *onbsigp;
L
Linus Torvalds 已提交
3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665
	int		i, foundit;

/*
 *	First up we reset the board, to get it into a known state. There
 *	is only 2 board types here we need to worry about. Don;t use the
 *	standard board init routine here, it programs up the shared
 *	memory address, and we don't know it yet...
 */
	if (brdp->brdtype == BRD_ECPE) {
		outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
		outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
		udelay(10);
		outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
		udelay(500);
		stli_ecpeienable(brdp);
	} else if (brdp->brdtype == BRD_ONBOARDE) {
		outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
		outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
		udelay(10);
		outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
		mdelay(100);
		outb(0x1, brdp->iobase);
		mdelay(1);
		stli_onbeenable(brdp);
	} else {
A
Alan Cox 已提交
3666
		return -ENODEV;
L
Linus Torvalds 已提交
3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678
	}

	foundit = 0;
	brdp->memsize = ECP_MEMSIZE;

/*
 *	Board shared memory is enabled, so now we have a poke around and
 *	see if we can find it.
 */
	for (i = 0; (i < stli_eisamempsize); i++) {
		brdp->memaddr = stli_eisamemprobeaddrs[i];
		brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
A
Alan Cox 已提交
3679
		if (brdp->membase == NULL)
L
Linus Torvalds 已提交
3680 3681 3682
			continue;

		if (brdp->brdtype == BRD_ECPE) {
3683
			ecpsigp = stli_ecpeigetmemptr(brdp,
L
Linus Torvalds 已提交
3684
				CDK_SIGADDR, __LINE__);
A
Alan Cox 已提交
3685 3686
			memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
			if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
L
Linus Torvalds 已提交
3687 3688
				foundit = 1;
		} else {
A
Alan Cox 已提交
3689
			onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
L
Linus Torvalds 已提交
3690
				CDK_SIGADDR, __LINE__);
A
Alan Cox 已提交
3691 3692 3693 3694 3695
			memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
			if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
			    (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
			    (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
			    (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
L
Linus Torvalds 已提交
3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718
				foundit = 1;
		}

		iounmap(brdp->membase);
		if (foundit)
			break;
	}

/*
 *	Regardless of whether we found the shared memory or not we must
 *	disable the region. After that return success or failure.
 */
	if (brdp->brdtype == BRD_ECPE)
		stli_ecpeidisable(brdp);
	else
		stli_onbedisable(brdp);

	if (! foundit) {
		brdp->memaddr = 0;
		brdp->membase = NULL;
		printk(KERN_ERR "STALLION: failed to probe shared memory "
				"region for %s in EISA slot=%d\n",
			stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
A
Alan Cox 已提交
3719
		return -ENODEV;
L
Linus Torvalds 已提交
3720
	}
A
Alan Cox 已提交
3721
	return 0;
L
Linus Torvalds 已提交
3722
}
3723
#endif
L
Linus Torvalds 已提交
3724 3725 3726

static int stli_getbrdnr(void)
{
3727
	unsigned int i;
L
Linus Torvalds 已提交
3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738

	for (i = 0; i < STL_MAXBRDS; i++) {
		if (!stli_brds[i]) {
			if (i >= stli_nrbrds)
				stli_nrbrds = i + 1;
			return i;
		}
	}
	return -1;
}

3739
#if STLI_EISAPROBE != 0
L
Linus Torvalds 已提交
3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753
/*****************************************************************************/

/*
 *	Probe around and try to find any EISA boards in system. The biggest
 *	problem here is finding out what memory address is associated with
 *	an EISA board after it is found. The registers of the ECPE and
 *	ONboardE are not readable - so we can't read them from there. We
 *	don't have access to the EISA CMOS (or EISA BIOS) so we don't
 *	actually have any way to find out the real value. The best we can
 *	do is go probing around in the usual places hoping we can find it.
 */

static int stli_findeisabrds(void)
{
3754
	struct stlibrd *brdp;
3755
	unsigned int iobase, eid, i;
3756
	int brdnr, found = 0;
L
Linus Torvalds 已提交
3757 3758

/*
A
Alan Cox 已提交
3759
 *	Firstly check if this is an EISA system.  If this is not an EISA system then
L
Linus Torvalds 已提交
3760 3761
 *	don't bother going any further!
 */
A
Alan Cox 已提交
3762 3763
	if (EISA_bus)
		return 0;
L
Linus Torvalds 已提交
3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780

/*
 *	Looks like an EISA system, so go searching for EISA boards.
 */
	for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
		outb(0xff, (iobase + 0xc80));
		eid = inb(iobase + 0xc80);
		eid |= inb(iobase + 0xc81) << 8;
		if (eid != STL_EISAID)
			continue;

/*
 *		We have found a board. Need to check if this board was
 *		statically configured already (just in case!).
 */
		for (i = 0; (i < STL_MAXBRDS); i++) {
			brdp = stli_brds[i];
A
Alan Cox 已提交
3781
			if (brdp == NULL)
L
Linus Torvalds 已提交
3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792
				continue;
			if (brdp->iobase == iobase)
				break;
		}
		if (i < STL_MAXBRDS)
			continue;

/*
 *		We have found a Stallion board and it is not configured already.
 *		Allocate a board structure and initialize it.
 */
A
Alan Cox 已提交
3793
		if ((brdp = stli_allocbrd()) == NULL)
3794
			return found ? : -ENOMEM;
3795 3796
		brdnr = stli_getbrdnr();
		if (brdnr < 0)
3797
			return found ? : -ENOMEM;
3798
		brdp->brdnr = (unsigned int)brdnr;
L
Linus Torvalds 已提交
3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809
		eid = inb(iobase + 0xc82);
		if (eid == ECP_EISAID)
			brdp->brdtype = BRD_ECPE;
		else if (eid == ONB_EISAID)
			brdp->brdtype = BRD_ONBOARDE;
		else
			brdp->brdtype = BRD_UNKNOWN;
		brdp->iobase = iobase;
		outb(0x1, (iobase + 0xc84));
		if (stli_eisamemprobe(brdp))
			outb(0, (iobase + 0xc84));
3810 3811 3812 3813 3814
		if (stli_brdinit(brdp) < 0) {
			kfree(brdp);
			continue;
		}

3815
		stli_brds[brdp->brdnr] = brdp;
3816
		found++;
3817 3818 3819 3820

		for (i = 0; i < brdp->nrports; i++)
			tty_register_device(stli_serial,
					brdp->brdnr * STL_MAXPORTS + i, NULL);
L
Linus Torvalds 已提交
3821 3822
	}

3823
	return found;
L
Linus Torvalds 已提交
3824
}
3825 3826 3827
#else
static inline int stli_findeisabrds(void) { return 0; }
#endif
L
Linus Torvalds 已提交
3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842

/*****************************************************************************/

/*
 *	Find the next available board number that is free.
 */

/*****************************************************************************/

/*
 *	We have a Stallion board. Allocate a board structure and
 *	initialize it. Read its IO and MEMORY resources from PCI
 *	configuration space.
 */

3843 3844
static int __devinit stli_pciprobe(struct pci_dev *pdev,
		const struct pci_device_id *ent)
L
Linus Torvalds 已提交
3845
{
3846
	struct stlibrd *brdp;
3847
	unsigned int i;
3848
	int brdnr, retval = -EIO;
3849 3850 3851 3852 3853 3854 3855 3856 3857

	retval = pci_enable_device(pdev);
	if (retval)
		goto err;
	brdp = stli_allocbrd();
	if (brdp == NULL) {
		retval = -ENOMEM;
		goto err;
	}
3858
	mutex_lock(&stli_brdslock);
3859
	brdnr = stli_getbrdnr();
3860
	if (brdnr < 0) {
L
Linus Torvalds 已提交
3861 3862
		printk(KERN_INFO "STALLION: too many boards found, "
			"maximum supported %d\n", STL_MAXBRDS);
3863
		mutex_unlock(&stli_brdslock);
3864 3865
		retval = -EIO;
		goto err_fr;
L
Linus Torvalds 已提交
3866
	}
3867
	brdp->brdnr = (unsigned int)brdnr;
3868 3869
	stli_brds[brdp->brdnr] = brdp;
	mutex_unlock(&stli_brdslock);
3870
	brdp->brdtype = BRD_ECPPCI;
L
Linus Torvalds 已提交
3871 3872 3873 3874
/*
 *	We have all resources from the board, so lets setup the actual
 *	board structure now.
 */
3875 3876 3877 3878
	brdp->iobase = pci_resource_start(pdev, 3);
	brdp->memaddr = pci_resource_start(pdev, 2);
	retval = stli_brdinit(brdp);
	if (retval)
3879
		goto err_null;
3880

3881
	brdp->state |= BST_PROBED;
3882
	pci_set_drvdata(pdev, brdp);
L
Linus Torvalds 已提交
3883

J
Jiri Slaby 已提交
3884 3885 3886 3887
	EBRDENABLE(brdp);
	brdp->enable = NULL;
	brdp->disable = NULL;

3888 3889 3890 3891
	for (i = 0; i < brdp->nrports; i++)
		tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i,
				&pdev->dev);

A
Alan Cox 已提交
3892
	return 0;
3893 3894
err_null:
	stli_brds[brdp->brdnr] = NULL;
3895 3896 3897 3898
err_fr:
	kfree(brdp);
err:
	return retval;
L
Linus Torvalds 已提交
3899 3900
}

3901 3902
static void stli_pciremove(struct pci_dev *pdev)
{
3903
	struct stlibrd *brdp = pci_get_drvdata(pdev);
L
Linus Torvalds 已提交
3904

3905
	stli_cleanup_ports(brdp);
L
Linus Torvalds 已提交
3906

3907 3908 3909
	iounmap(brdp->membase);
	if (brdp->iosize > 0)
		release_region(brdp->iobase, brdp->iosize);
L
Linus Torvalds 已提交
3910

3911 3912
	stli_brds[brdp->brdnr] = NULL;
	kfree(brdp);
L
Linus Torvalds 已提交
3913 3914
}

3915 3916 3917 3918 3919 3920
static struct pci_driver stli_pcidriver = {
	.name = "istallion",
	.id_table = istallion_pci_tbl,
	.probe = stli_pciprobe,
	.remove = __devexit_p(stli_pciremove)
};
L
Linus Torvalds 已提交
3921 3922 3923 3924 3925 3926
/*****************************************************************************/

/*
 *	Allocate a new board structure. Fill out the basic info in it.
 */

3927
static struct stlibrd *stli_allocbrd(void)
L
Linus Torvalds 已提交
3928
{
3929
	struct stlibrd *brdp;
L
Linus Torvalds 已提交
3930

3931
	brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
3932
	if (!brdp) {
L
Linus Torvalds 已提交
3933
		printk(KERN_ERR "STALLION: failed to allocate memory "
3934
				"(size=%Zd)\n", sizeof(struct stlibrd));
3935
		return NULL;
L
Linus Torvalds 已提交
3936 3937
	}
	brdp->magic = STLI_BOARDMAGIC;
A
Alan Cox 已提交
3938
	return brdp;
L
Linus Torvalds 已提交
3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949
}

/*****************************************************************************/

/*
 *	Scan through all the boards in the configuration and see what we
 *	can find.
 */

static int stli_initbrds(void)
{
3950 3951
	struct stlibrd *brdp, *nxtbrdp;
	struct stlconf conf;
3952
	unsigned int i, j, found = 0;
3953
	int retval;
L
Linus Torvalds 已提交
3954

3955 3956 3957 3958 3959
	for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
			stli_nrbrds++) {
		memset(&conf, 0, sizeof(conf));
		if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
			continue;
A
Alan Cox 已提交
3960
		if ((brdp = stli_allocbrd()) == NULL)
3961 3962 3963 3964 3965
			continue;
		brdp->brdnr = stli_nrbrds;
		brdp->brdtype = conf.brdtype;
		brdp->iobase = conf.ioaddr1;
		brdp->memaddr = conf.memaddr;
3966 3967 3968 3969
		if (stli_brdinit(brdp) < 0) {
			kfree(brdp);
			continue;
		}
3970
		stli_brds[brdp->brdnr] = brdp;
3971
		found++;
3972 3973 3974 3975

		for (i = 0; i < brdp->nrports; i++)
			tty_register_device(stli_serial,
					brdp->brdnr * STL_MAXPORTS + i, NULL);
L
Linus Torvalds 已提交
3976 3977
	}

3978 3979 3980
	retval = stli_findeisabrds();
	if (retval > 0)
		found += retval;
3981

L
Linus Torvalds 已提交
3982 3983 3984 3985 3986 3987 3988 3989 3990
/*
 *	All found boards are initialized. Now for a little optimization, if
 *	no boards are sharing the "shared memory" regions then we can just
 *	leave them all enabled. This is in fact the usual case.
 */
	stli_shared = 0;
	if (stli_nrbrds > 1) {
		for (i = 0; (i < stli_nrbrds); i++) {
			brdp = stli_brds[i];
A
Alan Cox 已提交
3991
			if (brdp == NULL)
L
Linus Torvalds 已提交
3992 3993 3994
				continue;
			for (j = i + 1; (j < stli_nrbrds); j++) {
				nxtbrdp = stli_brds[j];
A
Alan Cox 已提交
3995
				if (nxtbrdp == NULL)
L
Linus Torvalds 已提交
3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009
					continue;
				if ((brdp->membase >= nxtbrdp->membase) &&
				    (brdp->membase <= (nxtbrdp->membase +
				    nxtbrdp->memsize - 1))) {
					stli_shared++;
					break;
				}
			}
		}
	}

	if (stli_shared == 0) {
		for (i = 0; (i < stli_nrbrds); i++) {
			brdp = stli_brds[i];
A
Alan Cox 已提交
4010
			if (brdp == NULL)
L
Linus Torvalds 已提交
4011 4012 4013 4014 4015 4016 4017 4018 4019
				continue;
			if (brdp->state & BST_FOUND) {
				EBRDENABLE(brdp);
				brdp->enable = NULL;
				brdp->disable = NULL;
			}
		}
	}

J
Jiri Slaby 已提交
4020 4021 4022 4023 4024 4025 4026
	retval = pci_register_driver(&stli_pcidriver);
	if (retval && found == 0) {
		printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
				"driver can be registered!\n");
		goto err;
	}

A
Alan Cox 已提交
4027
	return 0;
4028 4029
err:
	return retval;
L
Linus Torvalds 已提交
4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041
}

/*****************************************************************************/

/*
 *	Code to handle an "staliomem" read operation. This device is the 
 *	contents of the board shared memory. It is used for down loading
 *	the slave image (and debugging :-)
 */

static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
{
A
Alan Cox 已提交
4042
	unsigned long flags;
4043
	void __iomem *memptr;
4044
	struct stlibrd *brdp;
4045 4046
	unsigned int brdnr;
	int size, n;
A
Alan Cox 已提交
4047 4048
	void *p;
	loff_t off = *offp;
L
Linus Torvalds 已提交
4049

4050
	brdnr = iminor(fp->f_path.dentry->d_inode);
L
Linus Torvalds 已提交
4051
	if (brdnr >= stli_nrbrds)
A
Alan Cox 已提交
4052
		return -ENODEV;
L
Linus Torvalds 已提交
4053
	brdp = stli_brds[brdnr];
A
Alan Cox 已提交
4054 4055
	if (brdp == NULL)
		return -ENODEV;
L
Linus Torvalds 已提交
4056
	if (brdp->state == 0)
A
Alan Cox 已提交
4057 4058 4059
		return -ENODEV;
	if (off >= brdp->memsize || off + count < off)
		return 0;
L
Linus Torvalds 已提交
4060

4061
	size = min(count, (size_t)(brdp->memsize - off));
A
Alan Cox 已提交
4062 4063 4064 4065 4066 4067 4068 4069

	/*
	 *	Copy the data a page at a time
	 */

	p = (void *)__get_free_page(GFP_KERNEL);
	if(p == NULL)
		return -ENOMEM;
L
Linus Torvalds 已提交
4070 4071

	while (size > 0) {
A
Alan Cox 已提交
4072 4073
		spin_lock_irqsave(&brd_lock, flags);
		EBRDENABLE(brdp);
4074
		memptr = EBRDGETMEMPTR(brdp, off);
4075 4076
		n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
		n = min(n, (int)PAGE_SIZE);
A
Alan Cox 已提交
4077 4078 4079 4080
		memcpy_fromio(p, memptr, n);
		EBRDDISABLE(brdp);
		spin_unlock_irqrestore(&brd_lock, flags);
		if (copy_to_user(buf, p, n)) {
L
Linus Torvalds 已提交
4081 4082 4083
			count = -EFAULT;
			goto out;
		}
A
Alan Cox 已提交
4084
		off += n;
L
Linus Torvalds 已提交
4085 4086 4087 4088
		buf += n;
		size -= n;
	}
out:
A
Alan Cox 已提交
4089 4090 4091
	*offp = off;
	free_page((unsigned long)p);
	return count;
L
Linus Torvalds 已提交
4092 4093 4094 4095 4096 4097 4098 4099
}

/*****************************************************************************/

/*
 *	Code to handle an "staliomem" write operation. This device is the 
 *	contents of the board shared memory. It is used for down loading
 *	the slave image (and debugging :-)
A
Alan Cox 已提交
4100 4101
 *
 *	FIXME: copy under lock
L
Linus Torvalds 已提交
4102 4103 4104 4105
 */

static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
{
A
Alan Cox 已提交
4106
	unsigned long flags;
4107
	void __iomem *memptr;
4108
	struct stlibrd *brdp;
A
Alan Cox 已提交
4109
	char __user *chbuf;
4110 4111
	unsigned int brdnr;
	int size, n;
A
Alan Cox 已提交
4112 4113
	void *p;
	loff_t off = *offp;
L
Linus Torvalds 已提交
4114

4115
	brdnr = iminor(fp->f_path.dentry->d_inode);
A
Alan Cox 已提交
4116

L
Linus Torvalds 已提交
4117
	if (brdnr >= stli_nrbrds)
A
Alan Cox 已提交
4118
		return -ENODEV;
L
Linus Torvalds 已提交
4119
	brdp = stli_brds[brdnr];
A
Alan Cox 已提交
4120 4121
	if (brdp == NULL)
		return -ENODEV;
L
Linus Torvalds 已提交
4122
	if (brdp->state == 0)
A
Alan Cox 已提交
4123 4124 4125
		return -ENODEV;
	if (off >= brdp->memsize || off + count < off)
		return 0;
L
Linus Torvalds 已提交
4126 4127

	chbuf = (char __user *) buf;
4128
	size = min(count, (size_t)(brdp->memsize - off));
A
Alan Cox 已提交
4129 4130 4131 4132 4133 4134 4135 4136

	/*
	 *	Copy the data a page at a time
	 */

	p = (void *)__get_free_page(GFP_KERNEL);
	if(p == NULL)
		return -ENOMEM;
L
Linus Torvalds 已提交
4137 4138

	while (size > 0) {
4139 4140
		n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
		n = min(n, (int)PAGE_SIZE);
A
Alan Cox 已提交
4141 4142 4143
		if (copy_from_user(p, chbuf, n)) {
			if (count == 0)
				count = -EFAULT;
L
Linus Torvalds 已提交
4144 4145
			goto out;
		}
A
Alan Cox 已提交
4146 4147
		spin_lock_irqsave(&brd_lock, flags);
		EBRDENABLE(brdp);
4148
		memptr = EBRDGETMEMPTR(brdp, off);
A
Alan Cox 已提交
4149 4150 4151 4152
		memcpy_toio(memptr, p, n);
		EBRDDISABLE(brdp);
		spin_unlock_irqrestore(&brd_lock, flags);
		off += n;
L
Linus Torvalds 已提交
4153 4154 4155 4156
		chbuf += n;
		size -= n;
	}
out:
A
Alan Cox 已提交
4157 4158 4159
	free_page((unsigned long) p);
	*offp = off;
	return count;
L
Linus Torvalds 已提交
4160 4161 4162 4163 4164 4165 4166 4167 4168 4169
}

/*****************************************************************************/

/*
 *	Return the board stats structure to user app.
 */

static int stli_getbrdstats(combrd_t __user *bp)
{
4170
	struct stlibrd *brdp;
4171
	unsigned int i;
L
Linus Torvalds 已提交
4172 4173 4174 4175

	if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
		return -EFAULT;
	if (stli_brdstats.brd >= STL_MAXBRDS)
A
Alan Cox 已提交
4176
		return -ENODEV;
L
Linus Torvalds 已提交
4177
	brdp = stli_brds[stli_brdstats.brd];
A
Alan Cox 已提交
4178 4179
	if (brdp == NULL)
		return -ENODEV;
L
Linus Torvalds 已提交
4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197

	memset(&stli_brdstats, 0, sizeof(combrd_t));
	stli_brdstats.brd = brdp->brdnr;
	stli_brdstats.type = brdp->brdtype;
	stli_brdstats.hwid = 0;
	stli_brdstats.state = brdp->state;
	stli_brdstats.ioaddr = brdp->iobase;
	stli_brdstats.memaddr = brdp->memaddr;
	stli_brdstats.nrpanels = brdp->nrpanels;
	stli_brdstats.nrports = brdp->nrports;
	for (i = 0; (i < brdp->nrpanels); i++) {
		stli_brdstats.panels[i].panel = i;
		stli_brdstats.panels[i].hwid = brdp->panelids[i];
		stli_brdstats.panels[i].nrports = brdp->panels[i];
	}

	if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
		return -EFAULT;
A
Alan Cox 已提交
4198
	return 0;
L
Linus Torvalds 已提交
4199 4200 4201 4202 4203 4204 4205 4206
}

/*****************************************************************************/

/*
 *	Resolve the referenced port number into a port struct pointer.
 */

4207 4208
static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
		unsigned int portnr)
L
Linus Torvalds 已提交
4209
{
4210
	struct stlibrd *brdp;
4211
	unsigned int i;
L
Linus Torvalds 已提交
4212

4213
	if (brdnr >= STL_MAXBRDS)
A
Alan Cox 已提交
4214
		return NULL;
L
Linus Torvalds 已提交
4215
	brdp = stli_brds[brdnr];
A
Alan Cox 已提交
4216 4217
	if (brdp == NULL)
		return NULL;
L
Linus Torvalds 已提交
4218 4219
	for (i = 0; (i < panelnr); i++)
		portnr += brdp->panels[i];
4220
	if (portnr >= brdp->nrports)
A
Alan Cox 已提交
4221 4222
		return NULL;
	return brdp->ports[portnr];
L
Linus Torvalds 已提交
4223 4224 4225 4226 4227 4228 4229 4230 4231 4232
}

/*****************************************************************************/

/*
 *	Return the port stats structure to user app. A NULL port struct
 *	pointer passed in means that we need to find out from the app
 *	what port to get stats for (used through board control device).
 */

4233
static int stli_portcmdstats(struct stliport *portp)
L
Linus Torvalds 已提交
4234 4235
{
	unsigned long	flags;
4236
	struct stlibrd	*brdp;
L
Linus Torvalds 已提交
4237 4238 4239 4240
	int		rc;

	memset(&stli_comstats, 0, sizeof(comstats_t));

A
Alan Cox 已提交
4241 4242
	if (portp == NULL)
		return -ENODEV;
L
Linus Torvalds 已提交
4243
	brdp = stli_brds[portp->brdnr];
A
Alan Cox 已提交
4244 4245
	if (brdp == NULL)
		return -ENODEV;
L
Linus Torvalds 已提交
4246 4247 4248 4249

	if (brdp->state & BST_STARTED) {
		if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
		    &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
A
Alan Cox 已提交
4250
			return rc;
L
Linus Torvalds 已提交
4251 4252 4253 4254 4255 4256 4257 4258 4259 4260
	} else {
		memset(&stli_cdkstats, 0, sizeof(asystats_t));
	}

	stli_comstats.brd = portp->brdnr;
	stli_comstats.panel = portp->panelnr;
	stli_comstats.port = portp->portnr;
	stli_comstats.state = portp->state;
	stli_comstats.flags = portp->flags;

A
Alan Cox 已提交
4261 4262
	spin_lock_irqsave(&brd_lock, flags);
	if (portp->tty != NULL) {
L
Linus Torvalds 已提交
4263 4264
		if (portp->tty->driver_data == portp) {
			stli_comstats.ttystate = portp->tty->flags;
A
Alan Cox 已提交
4265 4266
			stli_comstats.rxbuffered = -1;
			if (portp->tty->termios != NULL) {
L
Linus Torvalds 已提交
4267 4268 4269 4270 4271 4272 4273
				stli_comstats.cflags = portp->tty->termios->c_cflag;
				stli_comstats.iflags = portp->tty->termios->c_iflag;
				stli_comstats.oflags = portp->tty->termios->c_oflag;
				stli_comstats.lflags = portp->tty->termios->c_lflag;
			}
		}
	}
A
Alan Cox 已提交
4274
	spin_unlock_irqrestore(&brd_lock, flags);
L
Linus Torvalds 已提交
4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295

	stli_comstats.txtotal = stli_cdkstats.txchars;
	stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
	stli_comstats.txbuffered = stli_cdkstats.txringq;
	stli_comstats.rxbuffered += stli_cdkstats.rxringq;
	stli_comstats.rxoverrun = stli_cdkstats.overruns;
	stli_comstats.rxparity = stli_cdkstats.parity;
	stli_comstats.rxframing = stli_cdkstats.framing;
	stli_comstats.rxlost = stli_cdkstats.ringover;
	stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
	stli_comstats.txbreaks = stli_cdkstats.txbreaks;
	stli_comstats.txxon = stli_cdkstats.txstart;
	stli_comstats.txxoff = stli_cdkstats.txstop;
	stli_comstats.rxxon = stli_cdkstats.rxstart;
	stli_comstats.rxxoff = stli_cdkstats.rxstop;
	stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
	stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
	stli_comstats.modem = stli_cdkstats.dcdcnt;
	stli_comstats.hwid = stli_cdkstats.hwid;
	stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);

A
Alan Cox 已提交
4296
	return 0;
L
Linus Torvalds 已提交
4297 4298 4299 4300 4301 4302 4303 4304 4305 4306
}

/*****************************************************************************/

/*
 *	Return the port stats structure to user app. A NULL port struct
 *	pointer passed in means that we need to find out from the app
 *	what port to get stats for (used through board control device).
 */

4307
static int stli_getportstats(struct stliport *portp, comstats_t __user *cp)
L
Linus Torvalds 已提交
4308
{
4309
	struct stlibrd *brdp;
A
Alan Cox 已提交
4310
	int rc;
L
Linus Torvalds 已提交
4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337

	if (!portp) {
		if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
			return -EFAULT;
		portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
			stli_comstats.port);
		if (!portp)
			return -ENODEV;
	}

	brdp = stli_brds[portp->brdnr];
	if (!brdp)
		return -ENODEV;

	if ((rc = stli_portcmdstats(portp)) < 0)
		return rc;

	return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
			-EFAULT : 0;
}

/*****************************************************************************/

/*
 *	Clear the port stats structure. We also return it zeroed out...
 */

4338
static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
L
Linus Torvalds 已提交
4339
{
4340
	struct stlibrd *brdp;
A
Alan Cox 已提交
4341
	int rc;
L
Linus Torvalds 已提交
4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376

	if (!portp) {
		if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
			return -EFAULT;
		portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
			stli_comstats.port);
		if (!portp)
			return -ENODEV;
	}

	brdp = stli_brds[portp->brdnr];
	if (!brdp)
		return -ENODEV;

	if (brdp->state & BST_STARTED) {
		if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
			return rc;
	}

	memset(&stli_comstats, 0, sizeof(comstats_t));
	stli_comstats.brd = portp->brdnr;
	stli_comstats.panel = portp->panelnr;
	stli_comstats.port = portp->portnr;

	if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
		return -EFAULT;
	return 0;
}

/*****************************************************************************/

/*
 *	Return the entire driver ports structure to a user app.
 */

4377
static int stli_getportstruct(struct stliport __user *arg)
L
Linus Torvalds 已提交
4378
{
4379
	struct stliport stli_dummyport;
4380
	struct stliport *portp;
L
Linus Torvalds 已提交
4381

4382
	if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
L
Linus Torvalds 已提交
4383 4384 4385 4386 4387
		return -EFAULT;
	portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
		 stli_dummyport.portnr);
	if (!portp)
		return -ENODEV;
4388
	if (copy_to_user(arg, portp, sizeof(struct stliport)))
L
Linus Torvalds 已提交
4389 4390 4391 4392 4393 4394 4395 4396 4397 4398
		return -EFAULT;
	return 0;
}

/*****************************************************************************/

/*
 *	Return the entire driver board structure to a user app.
 */

4399
static int stli_getbrdstruct(struct stlibrd __user *arg)
L
Linus Torvalds 已提交
4400
{
4401
	struct stlibrd stli_dummybrd;
4402
	struct stlibrd *brdp;
L
Linus Torvalds 已提交
4403

4404
	if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
L
Linus Torvalds 已提交
4405
		return -EFAULT;
4406
	if (stli_dummybrd.brdnr >= STL_MAXBRDS)
L
Linus Torvalds 已提交
4407 4408 4409 4410
		return -ENODEV;
	brdp = stli_brds[stli_dummybrd.brdnr];
	if (!brdp)
		return -ENODEV;
4411
	if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
L
Linus Torvalds 已提交
4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425
		return -EFAULT;
	return 0;
}

/*****************************************************************************/

/*
 *	The "staliomem" device is also required to do some special operations on
 *	the board. We need to be able to send an interrupt to the board,
 *	reset it, and start/stop it.
 */

static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
{
4426
	struct stlibrd *brdp;
A
Alan Cox 已提交
4427
	int brdnr, rc, done;
L
Linus Torvalds 已提交
4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459
	void __user *argp = (void __user *)arg;

/*
 *	First up handle the board independent ioctls.
 */
	done = 0;
	rc = 0;

	switch (cmd) {
	case COM_GETPORTSTATS:
		rc = stli_getportstats(NULL, argp);
		done++;
		break;
	case COM_CLRPORTSTATS:
		rc = stli_clrportstats(NULL, argp);
		done++;
		break;
	case COM_GETBRDSTATS:
		rc = stli_getbrdstats(argp);
		done++;
		break;
	case COM_READPORT:
		rc = stli_getportstruct(argp);
		done++;
		break;
	case COM_READBOARD:
		rc = stli_getbrdstruct(argp);
		done++;
		break;
	}

	if (done)
A
Alan Cox 已提交
4460
		return rc;
L
Linus Torvalds 已提交
4461 4462 4463 4464 4465 4466 4467

/*
 *	Now handle the board specific ioctls. These all depend on the
 *	minor number of the device they were called from.
 */
	brdnr = iminor(ip);
	if (brdnr >= STL_MAXBRDS)
A
Alan Cox 已提交
4468
		return -ENODEV;
L
Linus Torvalds 已提交
4469 4470
	brdp = stli_brds[brdnr];
	if (!brdp)
A
Alan Cox 已提交
4471
		return -ENODEV;
L
Linus Torvalds 已提交
4472
	if (brdp->state == 0)
A
Alan Cox 已提交
4473
		return -ENODEV;
L
Linus Torvalds 已提交
4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496

	switch (cmd) {
	case STL_BINTR:
		EBRDINTR(brdp);
		break;
	case STL_BSTART:
		rc = stli_startbrd(brdp);
		break;
	case STL_BSTOP:
		brdp->state &= ~BST_STARTED;
		break;
	case STL_BRESET:
		brdp->state &= ~BST_STARTED;
		EBRDRESET(brdp);
		if (stli_shared == 0) {
			if (brdp->reenable != NULL)
				(* brdp->reenable)(brdp);
		}
		break;
	default:
		rc = -ENOIOCTLCMD;
		break;
	}
A
Alan Cox 已提交
4497
	return rc;
L
Linus Torvalds 已提交
4498 4499
}

J
Jeff Dike 已提交
4500
static const struct tty_operations stli_ops = {
L
Linus Torvalds 已提交
4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524
	.open = stli_open,
	.close = stli_close,
	.write = stli_write,
	.put_char = stli_putchar,
	.flush_chars = stli_flushchars,
	.write_room = stli_writeroom,
	.chars_in_buffer = stli_charsinbuffer,
	.ioctl = stli_ioctl,
	.set_termios = stli_settermios,
	.throttle = stli_throttle,
	.unthrottle = stli_unthrottle,
	.stop = stli_stop,
	.start = stli_start,
	.hangup = stli_hangup,
	.flush_buffer = stli_flushbuffer,
	.break_ctl = stli_breakctl,
	.wait_until_sent = stli_waituntilsent,
	.send_xchar = stli_sendxchar,
	.read_proc = stli_readproc,
	.tiocmget = stli_tiocmget,
	.tiocmset = stli_tiocmset,
};

/*****************************************************************************/
4525 4526 4527
/*
 *	Loadable module initialization stuff.
 */
L
Linus Torvalds 已提交
4528

4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547
static void istallion_cleanup_isa(void)
{
	struct stlibrd	*brdp;
	unsigned int j;

	for (j = 0; (j < stli_nrbrds); j++) {
		if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED))
			continue;

		stli_cleanup_ports(brdp);

		iounmap(brdp->membase);
		if (brdp->iosize > 0)
			release_region(brdp->iobase, brdp->iosize);
		kfree(brdp);
		stli_brds[j] = NULL;
	}
}

4548
static int __init istallion_module_init(void)
L
Linus Torvalds 已提交
4549
{
4550 4551
	unsigned int i;
	int retval;
4552

L
Linus Torvalds 已提交
4553 4554
	printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);

A
Alan Cox 已提交
4555 4556 4557
	spin_lock_init(&stli_lock);
	spin_lock_init(&brd_lock);

4558
	stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4559
	if (!stli_txcookbuf) {
L
Linus Torvalds 已提交
4560 4561
		printk(KERN_ERR "STALLION: failed to allocate memory "
				"(size=%d)\n", STLI_TXBUFSIZE);
4562 4563 4564
		retval = -ENOMEM;
		goto err;
	}
L
Linus Torvalds 已提交
4565

4566 4567 4568 4569 4570
	stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
	if (!stli_serial) {
		retval = -ENOMEM;
		goto err_free;
	}
L
Linus Torvalds 已提交
4571 4572 4573 4574 4575 4576 4577 4578 4579

	stli_serial->owner = THIS_MODULE;
	stli_serial->driver_name = stli_drvname;
	stli_serial->name = stli_serialname;
	stli_serial->major = STL_SERIALMAJOR;
	stli_serial->minor_start = 0;
	stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
	stli_serial->subtype = SERIAL_TYPE_NORMAL;
	stli_serial->init_termios = stli_deftermios;
4580
	stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
L
Linus Torvalds 已提交
4581 4582
	tty_set_operations(stli_serial, &stli_ops);

4583 4584
	retval = tty_register_driver(stli_serial);
	if (retval) {
L
Linus Torvalds 已提交
4585
		printk(KERN_ERR "STALLION: failed to register serial driver\n");
4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601
		goto err_ttyput;
	}

	retval = stli_initbrds();
	if (retval)
		goto err_ttyunr;

/*
 *	Set up a character driver for the shared memory region. We need this
 *	to down load the slave code image. Also it is a useful debugging tool.
 */
	retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
	if (retval) {
		printk(KERN_ERR "STALLION: failed to register serial memory "
				"device\n");
		goto err_deinit;
L
Linus Torvalds 已提交
4602
	}
4603 4604 4605

	istallion_class = class_create(THIS_MODULE, "staliomem");
	for (i = 0; i < 4; i++)
4606 4607
		device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
			      "staliomem%d", i);
4608

A
Alan Cox 已提交
4609
	return 0;
4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620
err_deinit:
	pci_unregister_driver(&stli_pcidriver);
	istallion_cleanup_isa();
err_ttyunr:
	tty_unregister_driver(stli_serial);
err_ttyput:
	put_tty_driver(stli_serial);
err_free:
	kfree(stli_txcookbuf);
err:
	return retval;
L
Linus Torvalds 已提交
4621 4622 4623
}

/*****************************************************************************/
4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636

static void __exit istallion_module_exit(void)
{
	unsigned int j;

	printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
		stli_drvversion);

	if (stli_timeron) {
		stli_timeron = 0;
		del_timer_sync(&stli_timerlist);
	}

4637 4638
	unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");

4639
	for (j = 0; j < 4; j++)
4640
		device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j));
4641 4642
	class_destroy(istallion_class);

4643 4644
	pci_unregister_driver(&stli_pcidriver);
	istallion_cleanup_isa();
4645

4646 4647
	tty_unregister_driver(stli_serial);
	put_tty_driver(stli_serial);
4648

4649
	kfree(stli_txcookbuf);
4650 4651 4652 4653
}

module_init(istallion_module_init);
module_exit(istallion_module_exit);