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Diffstat (limited to 'include/linux/stallion.h')
| -rw-r--r-- | include/linux/stallion.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/include/linux/stallion.h b/include/linux/stallion.h new file mode 100644 index 00000000..336af33c --- /dev/null +++ b/include/linux/stallion.h @@ -0,0 +1,147 @@ +/*****************************************************************************/ + +/* + * stallion.h -- stallion multiport serial driver. + * + * Copyright (C) 1996-1998 Stallion Technologies + * Copyright (C) 1994-1996 Greg Ungerer. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/*****************************************************************************/ +#ifndef _STALLION_H +#define _STALLION_H +/*****************************************************************************/ + +/* + * Define important driver constants here. + */ +#define STL_MAXBRDS 4 +#define STL_MAXPANELS 4 +#define STL_MAXBANKS 8 +#define STL_PORTSPERPANEL 16 +#define STL_MAXPORTS 64 +#define STL_MAXDEVS (STL_MAXBRDS * STL_MAXPORTS) + + +/* + * Define a set of structures to hold all the board/panel/port info + * for our ports. These will be dynamically allocated as required. + */ + +/* + * Define a ring queue structure for each port. This will hold the + * TX data waiting to be output. Characters are fed into this buffer + * from the line discipline (or even direct from user space!) and + * then fed into the UARTs during interrupts. Will use a classic ring + * queue here for this. The good thing about this type of ring queue + * is that the head and tail pointers can be updated without interrupt + * protection - since "write" code only needs to change the head, and + * interrupt code only needs to change the tail. + */ +struct stlrq { + char *buf; + char *head; + char *tail; +}; + +/* + * Port, panel and board structures to hold status info about each. + * The board structure contains pointers to structures for each panel + * connected to it, and in turn each panel structure contains pointers + * for each port structure for each port on that panel. Note that + * the port structure also contains the board and panel number that it + * is associated with, this makes it (fairly) easy to get back to the + * board/panel info for a port. + */ +struct stlport { + unsigned long magic; + struct tty_port port; + unsigned int portnr; + unsigned int panelnr; + unsigned int brdnr; + int ioaddr; + int uartaddr; + unsigned int pagenr; + unsigned long istate; + int baud_base; + int custom_divisor; + int close_delay; + int closing_wait; + int openwaitcnt; + int brklen; + unsigned int sigs; + unsigned int rxignoremsk; + unsigned int rxmarkmsk; + unsigned int imr; + unsigned int crenable; + unsigned long clk; + unsigned long hwid; + void *uartp; + comstats_t stats; + struct stlrq tx; +}; + +struct stlpanel { + unsigned long magic; + unsigned int panelnr; + unsigned int brdnr; + unsigned int pagenr; + unsigned int nrports; + int iobase; + void *uartp; + void (*isr)(struct stlpanel *panelp, unsigned int iobase); + unsigned int hwid; + unsigned int ackmask; + struct stlport *ports[STL_PORTSPERPANEL]; +}; + +struct stlbrd { + unsigned long magic; + unsigned int brdnr; + unsigned int brdtype; + unsigned int state; + unsigned int nrpanels; + unsigned int nrports; + unsigned int nrbnks; + int irq; + int irqtype; + int (*isr)(struct stlbrd *brdp); + unsigned int ioaddr1; + unsigned int ioaddr2; + unsigned int iosize1; + unsigned int iosize2; + unsigned int iostatus; + unsigned int ioctrl; + unsigned int ioctrlval; + unsigned int hwid; + unsigned long clk; + unsigned int bnkpageaddr[STL_MAXBANKS]; + unsigned int bnkstataddr[STL_MAXBANKS]; + struct stlpanel *bnk2panel[STL_MAXBANKS]; + struct stlpanel *panels[STL_MAXPANELS]; +}; + + +/* + * Define MAGIC numbers used for above structures. + */ +#define STL_PORTMAGIC 0x5a7182c9 +#define STL_PANELMAGIC 0x7ef621a1 +#define STL_BOARDMAGIC 0xa2267f52 + +/*****************************************************************************/ +#endif |