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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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edc6afc549
This is the core of the switch to the new framework. I've split it from the driver patches which are mostly search/replace and would encourage people to give this one a good hard stare. The references to BOTHER and ISHIFT are the termios values that must be defined by a platform once it wants to turn on "new style" ioctl support. The code patches here ensure that providing 1. The termios overlays the ktermios in memory 2. The only new kernel only fields are c_ispeed/c_ospeed (or none) the existing behaviour is retained. This is true for the patches at this point in time. Future patches will define BOTHER, ISHIFT and enable newer termios structures for each architecture, and once they are all done some of the ifdefs also vanish. [akpm@osdl.org: warning fix] [akpm@osdl.org: IRDA fix] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
140 lines
4.3 KiB
C
140 lines
4.3 KiB
C
/*********************************************************************
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*
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* Filename: ircomm_tty.h
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* Version:
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* Description:
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* Status: Experimental.
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* Author: Dag Brattli <dagb@cs.uit.no>
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* Created at: Sun Jun 6 23:24:22 1999
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* Modified at: Fri Jan 28 13:16:57 2000
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* Modified by: Dag Brattli <dagb@cs.uit.no>
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*
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* Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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********************************************************************/
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#ifndef IRCOMM_TTY_H
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#define IRCOMM_TTY_H
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#include <linux/serial.h>
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#include <linux/termios.h>
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#include <linux/timer.h>
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#include <linux/tty.h> /* struct tty_struct */
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#include <net/irda/irias_object.h>
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#include <net/irda/ircomm_core.h>
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#include <net/irda/ircomm_param.h>
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#define IRCOMM_TTY_PORTS 32
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#define IRCOMM_TTY_MAGIC 0x3432
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#define IRCOMM_TTY_MAJOR 161
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#define IRCOMM_TTY_MINOR 0
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/* This is used as an initial value to max_header_size before the proper
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* value is filled in (5 for ttp, 4 for lmp). This allow us to detect
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* the state of the underlying connection. - Jean II */
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#define IRCOMM_TTY_HDR_UNINITIALISED 16
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/* Same for payload size. See qos.c for the smallest max data size */
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#define IRCOMM_TTY_DATA_UNINITIALISED (64 - IRCOMM_TTY_HDR_UNINITIALISED)
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/* Those are really defined in include/linux/serial.h - Jean II */
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#define ASYNC_B_INITIALIZED 31 /* Serial port was initialized */
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#define ASYNC_B_NORMAL_ACTIVE 29 /* Normal device is active */
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#define ASYNC_B_CLOSING 27 /* Serial port is closing */
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/*
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* IrCOMM TTY driver state
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*/
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struct ircomm_tty_cb {
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irda_queue_t queue; /* Must be first */
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magic_t magic;
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int state; /* Connect state */
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struct tty_struct *tty;
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struct ircomm_cb *ircomm; /* IrCOMM layer instance */
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struct sk_buff *tx_skb; /* Transmit buffer */
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struct sk_buff *ctrl_skb; /* Control data buffer */
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/* Parameters */
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struct ircomm_params settings;
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__u8 service_type; /* The service that we support */
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int client; /* True if we are a client */
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LOCAL_FLOW flow; /* IrTTP flow status */
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int line;
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unsigned long flags;
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__u8 dlsap_sel;
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__u8 slsap_sel;
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__u32 saddr;
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__u32 daddr;
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__u32 max_data_size; /* Max data we can transmit in one packet */
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__u32 max_header_size; /* The amount of header space we must reserve */
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__u32 tx_data_size; /* Max data size of current tx_skb */
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struct iriap_cb *iriap; /* Instance used for querying remote IAS */
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struct ias_object* obj;
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void *skey;
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void *ckey;
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wait_queue_head_t open_wait;
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wait_queue_head_t close_wait;
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struct timer_list watchdog_timer;
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struct work_struct tqueue;
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unsigned short close_delay;
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unsigned short closing_wait; /* time to wait before closing */
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int open_count;
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int blocked_open; /* # of blocked opens */
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/* Protect concurent access to :
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* o self->open_count
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* o self->ctrl_skb
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* o self->tx_skb
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* Maybe other things may gain to be protected as well...
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* Jean II */
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spinlock_t spinlock;
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};
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void ircomm_tty_start(struct tty_struct *tty);
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void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self);
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extern int ircomm_tty_tiocmget(struct tty_struct *tty, struct file *file);
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extern int ircomm_tty_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear);
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extern int ircomm_tty_ioctl(struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg);
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extern void ircomm_tty_set_termios(struct tty_struct *tty,
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struct ktermios *old_termios);
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extern hashbin_t *ircomm_tty;
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#endif
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