[deliverable/linux.git] / drivers / serial / jsm / jsm.h

/************************************************************************
 * Copyright 2003 Digi International (www.digi.com)
 *
 * Copyright (C) 2004 IBM Corporation. All rights reserved.
 *
 * 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, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 * Temple Place - Suite 330, Boston,
 * MA  02111-1307, USA.
 *
 * Contact Information:
 * Scott H Kilau <Scott_Kilau@digi.com>
 * Wendy Xiong   <wendyx@us.ibm.com>
 *
 ***********************************************************************/

#ifndef __JSM_DRIVER_H
#define __JSM_DRIVER_H

#include <linux/kernel.h>
#include <linux/types.h>	/* To pick up the varions Linux types */
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <linux/device.h>

/*
 * Debugging levels can be set using debug insmod variable
 * They can also be compiled out completely.
 */
enum {
	DBG_INIT	= 0x01,
	DBG_BASIC	= 0x02,
	DBG_CORE	= 0x04,
	DBG_OPEN	= 0x08,
	DBG_CLOSE	= 0x10,
	DBG_READ	= 0x20,
	DBG_WRITE	= 0x40,
	DBG_IOCTL	= 0x80,
	DBG_PROC	= 0x100,
	DBG_PARAM	= 0x200,
	DBG_PSCAN	= 0x400,
	DBG_EVENT	= 0x800,
	DBG_DRAIN	= 0x1000,
	DBG_MSIGS	= 0x2000,
	DBG_MGMT	= 0x4000,
	DBG_INTR	= 0x8000,
	DBG_CARR	= 0x10000,
};

#define jsm_printk(nlevel, klevel, pdev, fmt, args...)	\
	if ((DBG_##nlevel & jsm_debug))			\
	dev_printk(KERN_##klevel, pdev->dev, fmt, ## args)

#define MAXPORTS	8
#define MAX_STOPS_SENT	5

/* Board type definitions */

#define T_NEO		0000
#define T_CLASSIC	0001
#define T_PCIBUS	0400

/* Board State Definitions */

#define BD_RUNNING	0x0
#define BD_REASON	0x7f
#define BD_NOTFOUND	0x1
#define BD_NOIOPORT	0x2
#define BD_NOMEM	0x3
#define BD_NOBIOS	0x4
#define BD_NOFEP	0x5
#define BD_FAILED	0x6
#define BD_ALLOCATED	0x7
#define BD_TRIBOOT	0x8
#define BD_BADKME	0x80


/* 4 extra for alignment play space */
#define WRITEBUFLEN	((4096) + 4)
#define MYFLIPLEN	N_TTY_BUF_SIZE

#define JSM_VERSION	"jsm: 1.2-1-INKERNEL"
#define JSM_PARTNUM	"40002438_A-INKERNEL"

struct jsm_board;
struct jsm_channel;

/************************************************************************
 * Per board operations structure					*
 ************************************************************************/
struct board_ops {
	irq_handler_t intr;
	void (*uart_init) (struct jsm_channel *ch);
	void (*uart_off) (struct jsm_channel *ch);
	void (*param) (struct jsm_channel *ch);
	void (*assert_modem_signals) (struct jsm_channel *ch);
	void (*flush_uart_write) (struct jsm_channel *ch);
	void (*flush_uart_read) (struct jsm_channel *ch);
	void (*disable_receiver) (struct jsm_channel *ch);
	void (*enable_receiver) (struct jsm_channel *ch);
	void (*send_break) (struct jsm_channel *ch);
	void (*clear_break) (struct jsm_channel *ch, int);
	void (*send_start_character) (struct jsm_channel *ch);
	void (*send_stop_character) (struct jsm_channel *ch);
	void (*copy_data_from_queue_to_uart) (struct jsm_channel *ch);
	u32 (*get_uart_bytes_left) (struct jsm_channel *ch);
	void (*send_immediate_char) (struct jsm_channel *ch, unsigned char);
};


/*
 *	Per-board information
 */
struct jsm_board
{
	int		boardnum;	/* Board number: 0-32 */

	int		type;		/* Type of board */
	u8		rev;		/* PCI revision ID */
	struct pci_dev	*pci_dev;
	u32		maxports;	/* MAX ports this board can handle */

	spinlock_t	bd_intr_lock;	/* Used to protect the poller tasklet and
					 * the interrupt routine from each other.
					 */

	u32		nasync;		/* Number of ports on card */

	u32		irq;		/* Interrupt request number */
	u64		intr_count;	/* Count of interrupts */

	u64		membase;	/* Start of base memory of the card */
	u64		membase_end;	/* End of base memory of the card */

	u8	__iomem *re_map_membase;/* Remapped memory of the card */

	u64		iobase;		/* Start of io base of the card */
	u64		iobase_end;	/* End of io base of the card */

	u32		bd_uart_offset;	/* Space between each UART */

	struct jsm_channel *channels[MAXPORTS]; /* array of pointers to our channels. */
	char		*flipbuf;	/* Our flip buffer, alloced if board is found */

	u32		bd_dividend;	/* Board/UARTs specific dividend */

	struct board_ops *bd_ops;

	struct list_head jsm_board_entry;
};

/************************************************************************
 * Device flag definitions for ch_flags.
 ************************************************************************/
#define CH_PRON		0x0001		/* Printer on string		*/
#define CH_STOP		0x0002		/* Output is stopped		*/
#define CH_STOPI	0x0004		/* Input is stopped		*/
#define CH_CD		0x0008		/* Carrier is present		*/
#define CH_FCAR		0x0010		/* Carrier forced on		*/
#define CH_HANGUP	0x0020		/* Hangup received		*/

#define CH_RECEIVER_OFF	0x0040		/* Receiver is off		*/
#define CH_OPENING	0x0080		/* Port in fragile open state	*/
#define CH_CLOSING	0x0100		/* Port in fragile close state	*/
#define CH_FIFO_ENABLED 0x0200		/* Port has FIFOs enabled	*/
#define CH_TX_FIFO_EMPTY 0x0400		/* TX Fifo is completely empty	*/
#define CH_TX_FIFO_LWM	0x0800		/* TX Fifo is below Low Water	*/
#define CH_BREAK_SENDING 0x1000		/* Break is being sent		*/
#define CH_LOOPBACK 0x2000		/* Channel is in lookback mode	*/
#define CH_FLIPBUF_IN_USE 0x4000	/* Channel's flipbuf is in use	*/
#define CH_BAUD0	0x08000		/* Used for checking B0 transitions */

/* Our Read/Error/Write queue sizes */
#define RQUEUEMASK	0x1FFF		/* 8 K - 1 */
#define EQUEUEMASK	0x1FFF		/* 8 K - 1 */
#define WQUEUEMASK	0x0FFF		/* 4 K - 1 */
#define RQUEUESIZE	(RQUEUEMASK + 1)
#define EQUEUESIZE	RQUEUESIZE
#define WQUEUESIZE	(WQUEUEMASK + 1)


/************************************************************************
 * Channel information structure.
 ************************************************************************/
struct jsm_channel {
	struct uart_port uart_port;
	struct jsm_board	*ch_bd;		/* Board structure pointer	*/

	spinlock_t	ch_lock;	/* provide for serialization */
	wait_queue_head_t ch_flags_wait;

	u32		ch_portnum;	/* Port number, 0 offset.	*/
	u32		ch_open_count;	/* open count			*/
	u32		ch_flags;	/* Channel flags		*/

	u64		ch_close_delay;	/* How long we should drop RTS/DTR for */

	u64		ch_cpstime;	/* Time for CPS calculations	*/

	tcflag_t	ch_c_iflag;	/* channel iflags		*/
	tcflag_t	ch_c_cflag;	/* channel cflags		*/
	tcflag_t	ch_c_oflag;	/* channel oflags		*/
	tcflag_t	ch_c_lflag;	/* channel lflags		*/
	u8		ch_stopc;	/* Stop character		*/
	u8		ch_startc;	/* Start character		*/

	u32		ch_old_baud;	/* Cache of the current baud */
	u32		ch_custom_speed;/* Custom baud, if set */

	u32		ch_wopen;	/* Waiting for open process cnt */

	u8		ch_mostat;	/* FEP output modem status	*/
	u8		ch_mistat;	/* FEP input modem status	*/

	struct neo_uart_struct __iomem *ch_neo_uart;	/* Pointer to the "mapped" UART struct */
	u8		ch_cached_lsr;	/* Cached value of the LSR register */

	u8		*ch_rqueue;	/* Our read queue buffer - malloc'ed */
	u16		ch_r_head;	/* Head location of the read queue */
	u16		ch_r_tail;	/* Tail location of the read queue */

	u8		*ch_equeue;	/* Our error queue buffer - malloc'ed */
	u16		ch_e_head;	/* Head location of the error queue */
	u16		ch_e_tail;	/* Tail location of the error queue */

	u8		*ch_wqueue;	/* Our write queue buffer - malloc'ed */
	u16		ch_w_head;	/* Head location of the write queue */
	u16		ch_w_tail;	/* Tail location of the write queue */

	u64		ch_rxcount;	/* total of data received so far */
	u64		ch_txcount;	/* total of data transmitted so far */

	u8		ch_r_tlevel;	/* Receive Trigger level */
	u8		ch_t_tlevel;	/* Transmit Trigger level */

	u8		ch_r_watermark;	/* Receive Watermark */


	u32		ch_stops_sent;	/* How many times I have sent a stop character
					 * to try to stop the other guy sending.
					 */
	u64		ch_err_parity;	/* Count of parity errors on channel */
	u64		ch_err_frame;	/* Count of framing errors on channel */
	u64		ch_err_break;	/* Count of breaks on channel */
	u64		ch_err_overrun; /* Count of overruns on channel */

	u64		ch_xon_sends;	/* Count of xons transmitted */
	u64		ch_xoff_sends;	/* Count of xoffs transmitted */
};


/************************************************************************
 * Per channel/port NEO UART structure					*
 ************************************************************************
 *		Base Structure Entries Usage Meanings to Host		*
 *									*
 *	W = read write		R = read only				*
 *			U = Unused.					*
 ************************************************************************/

struct neo_uart_struct {
	 u8 txrx;		/* WR	RHR/THR - Holding Reg */
	 u8 ier;		/* WR	IER - Interrupt Enable Reg */
	 u8 isr_fcr;		/* WR	ISR/FCR - Interrupt Status Reg/Fifo Control Reg */
	 u8 lcr;		/* WR	LCR - Line Control Reg */
	 u8 mcr;		/* WR	MCR - Modem Control Reg */
	 u8 lsr;		/* WR	LSR - Line Status Reg */
	 u8 msr;		/* WR	MSR - Modem Status Reg */
	 u8 spr;		/* WR	SPR - Scratch Pad Reg */
	 u8 fctr;		/* WR	FCTR - Feature Control Reg */
	 u8 efr;		/* WR	EFR - Enhanced Function Reg */
	 u8 tfifo;		/* WR	TXCNT/TXTRG - Transmit FIFO Reg */
	 u8 rfifo;		/* WR	RXCNT/RXTRG - Recieve FIFO Reg */
	 u8 xoffchar1;	/* WR	XOFF 1 - XOff Character 1 Reg */
	 u8 xoffchar2;	/* WR	XOFF 2 - XOff Character 2 Reg */
	 u8 xonchar1;	/* WR	XON 1 - Xon Character 1 Reg */
	 u8 xonchar2;	/* WR	XON 2 - XOn Character 2 Reg */

	 u8 reserved1[0x2ff - 0x200]; /* U	Reserved by Exar */
	 u8 txrxburst[64];	/* RW	64 bytes of RX/TX FIFO Data */
	 u8 reserved2[0x37f - 0x340]; /* U	Reserved by Exar */
	 u8 rxburst_with_errors[64];	/* R	64 bytes of RX FIFO Data + LSR */
};

/* Where to read the extended interrupt register (32bits instead of 8bits) */
#define	UART_17158_POLL_ADDR_OFFSET	0x80

/*
 * These are the redefinitions for the FCTR on the XR17C158, since
 * Exar made them different than their earlier design. (XR16C854)
 */

/* These are only applicable when table D is selected */
#define UART_17158_FCTR_RTS_NODELAY	0x00
#define UART_17158_FCTR_RTS_4DELAY	0x01
#define UART_17158_FCTR_RTS_6DELAY	0x02
#define UART_17158_FCTR_RTS_8DELAY	0x03
#define UART_17158_FCTR_RTS_12DELAY	0x12
#define UART_17158_FCTR_RTS_16DELAY	0x05
#define UART_17158_FCTR_RTS_20DELAY	0x13
#define UART_17158_FCTR_RTS_24DELAY	0x06
#define UART_17158_FCTR_RTS_28DELAY	0x14
#define UART_17158_FCTR_RTS_32DELAY	0x07
#define UART_17158_FCTR_RTS_36DELAY	0x16
#define UART_17158_FCTR_RTS_40DELAY	0x08
#define UART_17158_FCTR_RTS_44DELAY	0x09
#define UART_17158_FCTR_RTS_48DELAY	0x10
#define UART_17158_FCTR_RTS_52DELAY	0x11

#define UART_17158_FCTR_RTS_IRDA	0x10
#define UART_17158_FCTR_RS485		0x20
#define UART_17158_FCTR_TRGA		0x00
#define UART_17158_FCTR_TRGB		0x40
#define UART_17158_FCTR_TRGC		0x80
#define UART_17158_FCTR_TRGD		0xC0

/* 17158 trigger table selects.. */
#define UART_17158_FCTR_BIT6		0x40
#define UART_17158_FCTR_BIT7		0x80

/* 17158 TX/RX memmapped buffer offsets */
#define UART_17158_RX_FIFOSIZE		64
#define UART_17158_TX_FIFOSIZE		64

/* 17158 Extended IIR's */
#define UART_17158_IIR_RDI_TIMEOUT	0x0C	/* Receiver data TIMEOUT */
#define UART_17158_IIR_XONXOFF		0x10	/* Received an XON/XOFF char */
#define UART_17158_IIR_HWFLOW_STATE_CHANGE 0x20	/* CTS/DSR or RTS/DTR state change */
#define UART_17158_IIR_FIFO_ENABLED	0xC0	/* 16550 FIFOs are Enabled */

/*
 * These are the extended interrupts that get sent
 * back to us from the UART's 32bit interrupt register
 */
#define UART_17158_RX_LINE_STATUS	0x1	/* RX Ready */
#define UART_17158_RXRDY_TIMEOUT	0x2	/* RX Ready Timeout */
#define UART_17158_TXRDY		0x3	/* TX Ready */
#define UART_17158_MSR			0x4	/* Modem State Change */
#define UART_17158_TX_AND_FIFO_CLR	0x40	/* Transmitter Holding Reg Empty */
#define UART_17158_RX_FIFO_DATA_ERROR	0x80	/* UART detected an RX FIFO Data error */

/*
 * These are the EXTENDED definitions for the 17C158's Interrupt
 * Enable Register.
 */
#define UART_17158_EFR_ECB	0x10	/* Enhanced control bit */
#define UART_17158_EFR_IXON	0x2	/* Receiver compares Xon1/Xoff1 */
#define UART_17158_EFR_IXOFF	0x8	/* Transmit Xon1/Xoff1 */
#define UART_17158_EFR_RTSDTR	0x40	/* Auto RTS/DTR Flow Control Enable */
#define UART_17158_EFR_CTSDSR	0x80	/* Auto CTS/DSR Flow COntrol Enable */

#define UART_17158_XOFF_DETECT	0x1	/* Indicates whether chip saw an incoming XOFF char */
#define UART_17158_XON_DETECT	0x2	/* Indicates whether chip saw an incoming XON char */

#define UART_17158_IER_RSVD1	0x10	/* Reserved by Exar */
#define UART_17158_IER_XOFF	0x20	/* Xoff Interrupt Enable */
#define UART_17158_IER_RTSDTR	0x40	/* Output Interrupt Enable */
#define UART_17158_IER_CTSDSR	0x80	/* Input Interrupt Enable */

#define PCI_DEVICE_NEO_2DB9_PCI_NAME		"Neo 2 - DB9 Universal PCI"
#define PCI_DEVICE_NEO_2DB9PRI_PCI_NAME		"Neo 2 - DB9 Universal PCI - Powered Ring Indicator"
#define PCI_DEVICE_NEO_2RJ45_PCI_NAME		"Neo 2 - RJ45 Universal PCI"
#define PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME	"Neo 2 - RJ45 Universal PCI - Powered Ring Indicator"
#define PCIE_DEVICE_NEO_IBM_PCI_NAME		"Neo 4 - PCI Express - IBM"

/*
 * Our Global Variables.
 */
extern struct	uart_driver jsm_uart_driver;
extern struct	board_ops jsm_neo_ops;
extern int	jsm_debug;

/*************************************************************************
 *
 * Prototypes for non-static functions used in more than one module
 *
 *************************************************************************/
int jsm_tty_write(struct uart_port *port);
int jsm_tty_init(struct jsm_board *);
int jsm_uart_port_init(struct jsm_board *);
int jsm_remove_uart_port(struct jsm_board *);
void jsm_input(struct jsm_channel *ch);
void jsm_check_queue_flow_control(struct jsm_channel *ch);

#endif
Commit	Line	Data
1da177e4 LT	1	/************************************************************************
	2	* Copyright 2003 Digi International (www.digi.com)
	3	*
	4	* Copyright (C) 2004 IBM Corporation. All rights reserved.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2, or (at your option)
	9	* any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
	13	* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
	14	* PURPOSE. See the GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 * Temple Place - Suite 330, Boston,
	19	* MA 02111-1307, USA.
	20	*
	21	* Contact Information:
	22	* Scott H Kilau <Scott_Kilau@digi.com>
2a08b4e9	23	* Wendy Xiong <wendyx@us.ibm.com>
1da177e4 LT	24	*
	25	***********************************************************************/
	26
	27	#ifndef __JSM_DRIVER_H
	28	#define __JSM_DRIVER_H
	29
	30	#include <linux/kernel.h>
1da177e4 LT	31	#include <linux/types.h> /* To pick up the varions Linux types */
	32	#include <linux/tty.h>
	33	#include <linux/serial_core.h>
	34	#include <linux/device.h>
	35
	36	/*
	37	* Debugging levels can be set using debug insmod variable
	38	* They can also be compiled out completely.
	39	*/
	40	enum {
	41	DBG_INIT = 0x01,
	42	DBG_BASIC = 0x02,
	43	DBG_CORE = 0x04,
	44	DBG_OPEN = 0x08,
	45	DBG_CLOSE = 0x10,
	46	DBG_READ = 0x20,
	47	DBG_WRITE = 0x40,
	48	DBG_IOCTL = 0x80,
	49	DBG_PROC = 0x100,
	50	DBG_PARAM = 0x200,
	51	DBG_PSCAN = 0x400,
	52	DBG_EVENT = 0x800,
	53	DBG_DRAIN = 0x1000,
	54	DBG_MSIGS = 0x2000,
	55	DBG_MGMT = 0x4000,
	56	DBG_INTR = 0x8000,
	57	DBG_CARR = 0x10000,
	58	};
	59
	60	#define jsm_printk(nlevel, klevel, pdev, fmt, args...) \
	61	if ((DBG_##nlevel & jsm_debug)) \
	62	dev_printk(KERN_##klevel, pdev->dev, fmt, ## args)
	63
	64	#define MAXPORTS 8
	65	#define MAX_STOPS_SENT 5
	66
	67	/* Board type definitions */
	68
	69	#define T_NEO 0000
	70	#define T_CLASSIC 0001
	71	#define T_PCIBUS 0400
	72
	73	/* Board State Definitions */
	74
	75	#define BD_RUNNING 0x0
	76	#define BD_REASON 0x7f
	77	#define BD_NOTFOUND 0x1
	78	#define BD_NOIOPORT 0x2
	79	#define BD_NOMEM 0x3
	80	#define BD_NOBIOS 0x4
	81	#define BD_NOFEP 0x5
	82	#define BD_FAILED 0x6
	83	#define BD_ALLOCATED 0x7
	84	#define BD_TRIBOOT 0x8
	85	#define BD_BADKME 0x80
	86
	87
	88	/* 4 extra for alignment play space */
	89	#define WRITEBUFLEN ((4096) + 4)
	90	#define MYFLIPLEN N_TTY_BUF_SIZE
	91
c2236956	92	#define JSM_VERSION "jsm: 1.2-1-INKERNEL"
1da177e4 LT	93	#define JSM_PARTNUM "40002438_A-INKERNEL"
1da177e4 LT	94
1da177e4 LT	95	struct jsm_board;
	96	struct jsm_channel;
	97
	98	/************************************************************************
	99	* Per board operations structure *
	100	************************************************************************/
	101	struct board_ops {
7d12e780	102	irq_handler_t intr;
1da177e4 LT	103	void (uart_init) (struct jsm_channel ch);
	104	void (uart_off) (struct jsm_channel ch);
	105	void (param) (struct jsm_channel ch);
	106	void (assert_modem_signals) (struct jsm_channel ch);
	107	void (flush_uart_write) (struct jsm_channel ch);
	108	void (flush_uart_read) (struct jsm_channel ch);
	109	void (disable_receiver) (struct jsm_channel ch);
	110	void (enable_receiver) (struct jsm_channel ch);
	111	void (send_break) (struct jsm_channel ch);
	112	void (clear_break) (struct jsm_channel ch, int);
	113	void (send_start_character) (struct jsm_channel ch);
	114	void (send_stop_character) (struct jsm_channel ch);
	115	void (copy_data_from_queue_to_uart) (struct jsm_channel ch);
	116	u32 (get_uart_bytes_left) (struct jsm_channel ch);
	117	void (send_immediate_char) (struct jsm_channel ch, unsigned char);
	118	};
	119
	120
	121	/*
	122	* Per-board information
	123	*/
	124	struct jsm_board
	125	{
	126	int boardnum; /* Board number: 0-32 */
	127
	128	int type; /* Type of board */
1da177e4 LT	129	u8 rev; /* PCI revision ID */
	130	struct pci_dev *pci_dev;
	131	u32 maxports; /* MAX ports this board can handle */
	132
1da177e4 LT	133	spinlock_t bd_intr_lock; /* Used to protect the poller tasklet and
	134	* the interrupt routine from each other.
	135	*/
	136
1da177e4 LT	137	u32 nasync; /* Number of ports on card */
	138
	139	u32 irq; /* Interrupt request number */
	140	u64 intr_count; /* Count of interrupts */
	141
	142	u64 membase; /* Start of base memory of the card */
	143	u64 membase_end; /* End of base memory of the card */
	144
	145	u8 __iomem re_map_membase;/ Remapped memory of the card */
	146
	147	u64 iobase; /* Start of io base of the card */
	148	u64 iobase_end; /* End of io base of the card */
	149
	150	u32 bd_uart_offset; /* Space between each UART */
	151
	152	struct jsm_channel channels[MAXPORTS]; / array of pointers to our channels. */
	153	char flipbuf; / Our flip buffer, alloced if board is found */
	154
1da177e4 LT	155	u32 bd_dividend; /* Board/UARTs specific dividend */
	156
	157	struct board_ops *bd_ops;
	158
	159	struct list_head jsm_board_entry;
	160	};
	161
	162	/************************************************************************
	163	* Device flag definitions for ch_flags.
	164	************************************************************************/
	165	#define CH_PRON 0x0001 /* Printer on string */
	166	#define CH_STOP 0x0002 /* Output is stopped */
	167	#define CH_STOPI 0x0004 /* Input is stopped */
	168	#define CH_CD 0x0008 /* Carrier is present */
	169	#define CH_FCAR 0x0010 /* Carrier forced on */
	170	#define CH_HANGUP 0x0020 /* Hangup received */
	171
	172	#define CH_RECEIVER_OFF 0x0040 /* Receiver is off */
	173	#define CH_OPENING 0x0080 /* Port in fragile open state */
	174	#define CH_CLOSING 0x0100 /* Port in fragile close state */
	175	#define CH_FIFO_ENABLED 0x0200 /* Port has FIFOs enabled */
	176	#define CH_TX_FIFO_EMPTY 0x0400 /* TX Fifo is completely empty */
	177	#define CH_TX_FIFO_LWM 0x0800 /* TX Fifo is below Low Water */
	178	#define CH_BREAK_SENDING 0x1000 /* Break is being sent */
	179	#define CH_LOOPBACK 0x2000 /* Channel is in lookback mode */
	180	#define CH_FLIPBUF_IN_USE 0x4000 /* Channel's flipbuf is in use */
	181	#define CH_BAUD0 0x08000 /* Used for checking B0 transitions */
	182
	183	/* Our Read/Error/Write queue sizes */
	184	#define RQUEUEMASK 0x1FFF /* 8 K - 1 */
	185	#define EQUEUEMASK 0x1FFF /* 8 K - 1 */
	186	#define WQUEUEMASK 0x0FFF /* 4 K - 1 */
	187	#define RQUEUESIZE (RQUEUEMASK + 1)
	188	#define EQUEUESIZE RQUEUESIZE
	189	#define WQUEUESIZE (WQUEUEMASK + 1)
	190
	191
	192	/************************************************************************
	193	* Channel information structure.
	194	************************************************************************/
	195	struct jsm_channel {
	196	struct uart_port uart_port;
	197	struct jsm_board ch_bd; / Board structure pointer */
	198
	199	spinlock_t ch_lock; /* provide for serialization */
	200	wait_queue_head_t ch_flags_wait;
	201
	202	u32 ch_portnum; /* Port number, 0 offset. */
	203	u32 ch_open_count; /* open count */
	204	u32 ch_flags; /* Channel flags */
	205
	206	u64 ch_close_delay; /* How long we should drop RTS/DTR for */
	207
	208	u64 ch_cpstime; /* Time for CPS calculations */
	209
	210	tcflag_t ch_c_iflag; /* channel iflags */
	211	tcflag_t ch_c_cflag; /* channel cflags */
	212	tcflag_t ch_c_oflag; /* channel oflags */
	213	tcflag_t ch_c_lflag; /* channel lflags */
	214	u8 ch_stopc; /* Stop character */
	215	u8 ch_startc; /* Start character */
	216
	217	u32 ch_old_baud; /* Cache of the current baud */
	218	u32 ch_custom_speed;/* Custom baud, if set */
219
220	u32 ch_wopen; /* Waiting for open process cnt */
221
222	u8 ch_mostat; /* FEP output modem status */
223	u8 ch_mistat; /* FEP input modem status */
224
225	struct neo_uart_struct __iomem ch_neo_uart; / Pointer to the "mapped" UART struct */
226	u8 ch_cached_lsr; /* Cached value of the LSR register */
227
228	u8 ch_rqueue; / Our read queue buffer - malloc'ed */
229	u16 ch_r_head; /* Head location of the read queue */
230	u16 ch_r_tail; /* Tail location of the read queue */
231
232	u8 ch_equeue; / Our error queue buffer - malloc'ed */
233	u16 ch_e_head; /* Head location of the error queue */
234	u16 ch_e_tail; /* Tail location of the error queue */
235
236	u8 ch_wqueue; / Our write queue buffer - malloc'ed */
237	u16 ch_w_head; /* Head location of the write queue */
238	u16 ch_w_tail; /* Tail location of the write queue */
239
240	u64 ch_rxcount; /* total of data received so far */
241	u64 ch_txcount; /* total of data transmitted so far */
242
243	u8 ch_r_tlevel; /* Receive Trigger level */
244	u8 ch_t_tlevel; /* Transmit Trigger level */
245
246	u8 ch_r_watermark; /* Receive Watermark */
247
248
249	u32 ch_stops_sent; /* How many times I have sent a stop character
250	* to try to stop the other guy sending.
251	*/
252	u64 ch_err_parity; /* Count of parity errors on channel */
253	u64 ch_err_frame; /* Count of framing errors on channel */
254	u64 ch_err_break; /* Count of breaks on channel */
255	u64 ch_err_overrun; /* Count of overruns on channel */
256
257	u64 ch_xon_sends; /* Count of xons transmitted */
258	u64 ch_xoff_sends; /* Count of xoffs transmitted */
259	};
260
261
262	/************************************************************************
263	* Per channel/port NEO UART structure *
264	************************************************************************
265	* Base Structure Entries Usage Meanings to Host *
266	* *
267	* W = read write R = read only *
268	* U = Unused. *
269	************************************************************************/
270
271	struct neo_uart_struct {
272	u8 txrx; /* WR RHR/THR - Holding Reg */
273	u8 ier; /* WR IER - Interrupt Enable Reg */
274	u8 isr_fcr; /* WR ISR/FCR - Interrupt Status Reg/Fifo Control Reg */
275	u8 lcr; /* WR LCR - Line Control Reg */
276	u8 mcr; /* WR MCR - Modem Control Reg */
277	u8 lsr; /* WR LSR - Line Status Reg */
278	u8 msr; /* WR MSR - Modem Status Reg */
279	u8 spr; /* WR SPR - Scratch Pad Reg */
280	u8 fctr; /* WR FCTR - Feature Control Reg */
281	u8 efr; /* WR EFR - Enhanced Function Reg */
282	u8 tfifo; /* WR TXCNT/TXTRG - Transmit FIFO Reg */
283	u8 rfifo; /* WR RXCNT/RXTRG - Recieve FIFO Reg */
284	u8 xoffchar1; /* WR XOFF 1 - XOff Character 1 Reg */
285	u8 xoffchar2; /* WR XOFF 2 - XOff Character 2 Reg */
286	u8 xonchar1; /* WR XON 1 - Xon Character 1 Reg */
287	u8 xonchar2; /* WR XON 2 - XOn Character 2 Reg */
288
289	u8 reserved1[0x2ff - 0x200]; /* U Reserved by Exar */
290	u8 txrxburst[64]; /* RW 64 bytes of RX/TX FIFO Data */
291	u8 reserved2[0x37f - 0x340]; /* U Reserved by Exar */
292	u8 rxburst_with_errors[64]; /* R 64 bytes of RX FIFO Data + LSR */
293	};
294
295	/* Where to read the extended interrupt register (32bits instead of 8bits) */
296	#define UART_17158_POLL_ADDR_OFFSET 0x80
297
298	/*
299	* These are the redefinitions for the FCTR on the XR17C158, since
300	* Exar made them different than their earlier design. (XR16C854)
301	*/
302
303	/* These are only applicable when table D is selected */
304	#define UART_17158_FCTR_RTS_NODELAY 0x00
305	#define UART_17158_FCTR_RTS_4DELAY 0x01
306	#define UART_17158_FCTR_RTS_6DELAY 0x02
307	#define UART_17158_FCTR_RTS_8DELAY 0x03
308	#define UART_17158_FCTR_RTS_12DELAY 0x12
309	#define UART_17158_FCTR_RTS_16DELAY 0x05
310	#define UART_17158_FCTR_RTS_20DELAY 0x13
311	#define UART_17158_FCTR_RTS_24DELAY 0x06
312	#define UART_17158_FCTR_RTS_28DELAY 0x14
313	#define UART_17158_FCTR_RTS_32DELAY 0x07
314	#define UART_17158_FCTR_RTS_36DELAY 0x16
315	#define UART_17158_FCTR_RTS_40DELAY 0x08
316	#define UART_17158_FCTR_RTS_44DELAY 0x09
317	#define UART_17158_FCTR_RTS_48DELAY 0x10
318	#define UART_17158_FCTR_RTS_52DELAY 0x11
319
320	#define UART_17158_FCTR_RTS_IRDA 0x10
321	#define UART_17158_FCTR_RS485 0x20
322	#define UART_17158_FCTR_TRGA 0x00
323	#define UART_17158_FCTR_TRGB 0x40
324	#define UART_17158_FCTR_TRGC 0x80
325	#define UART_17158_FCTR_TRGD 0xC0
326
327	/* 17158 trigger table selects.. */
328	#define UART_17158_FCTR_BIT6 0x40
329	#define UART_17158_FCTR_BIT7 0x80
330
331	/* 17158 TX/RX memmapped buffer offsets */
332	#define UART_17158_RX_FIFOSIZE 64
333	#define UART_17158_TX_FIFOSIZE 64
334
335	/* 17158 Extended IIR's */
336	#define UART_17158_IIR_RDI_TIMEOUT 0x0C /* Receiver data TIMEOUT */
337	#define UART_17158_IIR_XONXOFF 0x10 /* Received an XON/XOFF char */
338	#define UART_17158_IIR_HWFLOW_STATE_CHANGE 0x20 /* CTS/DSR or RTS/DTR state change */
339	#define UART_17158_IIR_FIFO_ENABLED 0xC0 /* 16550 FIFOs are Enabled */
340
341	/*
342	* These are the extended interrupts that get sent
343	* back to us from the UART's 32bit interrupt register
344	*/
345	#define UART_17158_RX_LINE_STATUS 0x1 /* RX Ready */
346	#define UART_17158_RXRDY_TIMEOUT 0x2 /* RX Ready Timeout */
347	#define UART_17158_TXRDY 0x3 /* TX Ready */
348	#define UART_17158_MSR 0x4 /* Modem State Change */
349	#define UART_17158_TX_AND_FIFO_CLR 0x40 /* Transmitter Holding Reg Empty */
350	#define UART_17158_RX_FIFO_DATA_ERROR 0x80 /* UART detected an RX FIFO Data error */
351
352	/*
353	* These are the EXTENDED definitions for the 17C158's Interrupt
354	* Enable Register.
355	*/
356	#define UART_17158_EFR_ECB 0x10 /* Enhanced control bit */
357	#define UART_17158_EFR_IXON 0x2 /* Receiver compares Xon1/Xoff1 */
358	#define UART_17158_EFR_IXOFF 0x8 /* Transmit Xon1/Xoff1 */
359	#define UART_17158_EFR_RTSDTR 0x40 /* Auto RTS/DTR Flow Control Enable */
360	#define UART_17158_EFR_CTSDSR 0x80 /* Auto CTS/DSR Flow COntrol Enable */
361
362	#define UART_17158_XOFF_DETECT 0x1 /* Indicates whether chip saw an incoming XOFF char */
363	#define UART_17158_XON_DETECT 0x2 /* Indicates whether chip saw an incoming XON char */
364
365	#define UART_17158_IER_RSVD1 0x10 /* Reserved by Exar */
366	#define UART_17158_IER_XOFF 0x20 /* Xoff Interrupt Enable */
367	#define UART_17158_IER_RTSDTR 0x40 /* Output Interrupt Enable */
368	#define UART_17158_IER_CTSDSR 0x80 /* Input Interrupt Enable */
369
370	#define PCI_DEVICE_NEO_2DB9_PCI_NAME "Neo 2 - DB9 Universal PCI"
371	#define PCI_DEVICE_NEO_2DB9PRI_PCI_NAME "Neo 2 - DB9 Universal PCI - Powered Ring Indicator"
372	#define PCI_DEVICE_NEO_2RJ45_PCI_NAME "Neo 2 - RJ45 Universal PCI"
373	#define PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME "Neo 2 - RJ45 Universal PCI - Powered Ring Indicator"
99da9047	374	#define PCIE_DEVICE_NEO_IBM_PCI_NAME "Neo 4 - PCI Express - IBM"
1da177e4 LT	375
	376	/*
	377	* Our Global Variables.
	378	*/
	379	extern struct uart_driver jsm_uart_driver;
	380	extern struct board_ops jsm_neo_ops;
	381	extern int jsm_debug;
1da177e4	382
1da177e4 LT	383	/*************************************************************************
	384	*
	385	* Prototypes for non-static functions used in more than one module
	386	*
	387	*************************************************************************/
	388	int jsm_tty_write(struct uart_port *port);
	389	int jsm_tty_init(struct jsm_board *);
	390	int jsm_uart_port_init(struct jsm_board *);
	391	int jsm_remove_uart_port(struct jsm_board *);
	392	void jsm_input(struct jsm_channel *ch);
1da177e4 LT	393	void jsm_check_queue_flow_control(struct jsm_channel *ch);
1da177e4 LT	394
1da177e4	395	#endif