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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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f8ae476416
Switch the stallion driver to use the tty_port structure Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
148 lines
4.2 KiB
C
148 lines
4.2 KiB
C
/*****************************************************************************/
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/*
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* stallion.h -- stallion multiport serial driver.
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*
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* Copyright (C) 1996-1998 Stallion Technologies
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* Copyright (C) 1994-1996 Greg Ungerer.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*****************************************************************************/
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#ifndef _STALLION_H
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#define _STALLION_H
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/*****************************************************************************/
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/*
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* Define important driver constants here.
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*/
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#define STL_MAXBRDS 4
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#define STL_MAXPANELS 4
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#define STL_MAXBANKS 8
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#define STL_PORTSPERPANEL 16
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#define STL_MAXPORTS 64
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#define STL_MAXDEVS (STL_MAXBRDS * STL_MAXPORTS)
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/*
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* Define a set of structures to hold all the board/panel/port info
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* for our ports. These will be dynamically allocated as required.
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*/
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/*
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* Define a ring queue structure for each port. This will hold the
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* TX data waiting to be output. Characters are fed into this buffer
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* from the line discipline (or even direct from user space!) and
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* then fed into the UARTs during interrupts. Will use a classic ring
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* queue here for this. The good thing about this type of ring queue
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* is that the head and tail pointers can be updated without interrupt
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* protection - since "write" code only needs to change the head, and
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* interrupt code only needs to change the tail.
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*/
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struct stlrq {
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char *buf;
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char *head;
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char *tail;
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};
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/*
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* Port, panel and board structures to hold status info about each.
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* The board structure contains pointers to structures for each panel
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* connected to it, and in turn each panel structure contains pointers
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* for each port structure for each port on that panel. Note that
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* the port structure also contains the board and panel number that it
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* is associated with, this makes it (fairly) easy to get back to the
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* board/panel info for a port.
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*/
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struct stlport {
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unsigned long magic;
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struct tty_port port;
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unsigned int portnr;
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unsigned int panelnr;
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unsigned int brdnr;
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int ioaddr;
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int uartaddr;
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unsigned int pagenr;
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unsigned long istate;
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int baud_base;
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int custom_divisor;
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int close_delay;
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int closing_wait;
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int openwaitcnt;
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int brklen;
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unsigned int sigs;
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unsigned int rxignoremsk;
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unsigned int rxmarkmsk;
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unsigned int imr;
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unsigned int crenable;
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unsigned long clk;
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unsigned long hwid;
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void *uartp;
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comstats_t stats;
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struct stlrq tx;
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};
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struct stlpanel {
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unsigned long magic;
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unsigned int panelnr;
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unsigned int brdnr;
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unsigned int pagenr;
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unsigned int nrports;
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int iobase;
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void *uartp;
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void (*isr)(struct stlpanel *panelp, unsigned int iobase);
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unsigned int hwid;
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unsigned int ackmask;
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struct stlport *ports[STL_PORTSPERPANEL];
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};
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struct stlbrd {
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unsigned long magic;
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unsigned int brdnr;
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unsigned int brdtype;
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unsigned int state;
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unsigned int nrpanels;
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unsigned int nrports;
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unsigned int nrbnks;
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int irq;
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int irqtype;
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int (*isr)(struct stlbrd *brdp);
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unsigned int ioaddr1;
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unsigned int ioaddr2;
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unsigned int iosize1;
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unsigned int iosize2;
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unsigned int iostatus;
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unsigned int ioctrl;
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unsigned int ioctrlval;
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unsigned int hwid;
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unsigned long clk;
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unsigned int bnkpageaddr[STL_MAXBANKS];
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unsigned int bnkstataddr[STL_MAXBANKS];
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struct stlpanel *bnk2panel[STL_MAXBANKS];
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struct stlpanel *panels[STL_MAXPANELS];
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};
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/*
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* Define MAGIC numbers used for above structures.
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*/
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#define STL_PORTMAGIC 0x5a7182c9
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#define STL_PANELMAGIC 0x7ef621a1
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#define STL_BOARDMAGIC 0xa2267f52
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/*****************************************************************************/
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#endif
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