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Diffstat (limited to 'drivers/sbus/char/aurora.h')
| -rw-r--r-- | drivers/sbus/char/aurora.h | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/drivers/sbus/char/aurora.h b/drivers/sbus/char/aurora.h deleted file mode 100644 index b8b5476d986..00000000000 --- a/drivers/sbus/char/aurora.h +++ /dev/null @@ -1,276 +0,0 @@ -/* $Id: aurora.h,v 1.6 2001/06/05 12:23:38 davem Exp $ - * linux/drivers/sbus/char/aurora.h -- Aurora multiport driver - * - * Copyright (c) 1999 by Oliver Aldulea (oli@bv.ro) - * - * This code is based on the RISCom/8 multiport serial driver written - * by Dmitry Gorodchanin (pgmdsg@ibi.com), based on the Linux serial - * driver, written by Linus Torvalds, Theodore T'so and others. - * The Aurora multiport programming info was obtained mainly from the - * Cirrus Logic CD180 documentation (available on the web), and by - * doing heavy tests on the board. Many thanks to Eddie C. Dost for the - * help on the sbus interface. - * - * 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. - * - * Revision 1.0 - * - * This is the first public release. - * - * This version needs a lot of feedback. This is the version that works - * with _my_ board. My board is model 1600se, revision '@(#)1600se.fth - * 1.2 3/28/95 1'. The driver might work with your board, but I do not - * guarantee it. If you have _any_ type of board, I need to know if the - * driver works or not, I need to know exactly your board parameters - * (get them with 'cd /proc/openprom/iommu/sbus/sio16/; ls *; cat *') - * Also, I need your board revision code, which is written on the board. - * Send me the output of my driver too (it outputs through klogd). - * - * If the driver does not work, you can try enabling the debug options - * to see what's wrong or what should be done. - * - * I'm sorry about the alignment of the code. It was written in a - * 128x48 environment. - * - * I must say that I do not like Aurora Technologies' policy. I asked - * them to help me do this driver faster, but they ended by something - * like "don't call us, we'll call you", and I never heard anything - * from them. They told me "knowing the way the board works, I don't - * doubt you and others on the net will make the driver." - * The truth about this board is that it has nothing intelligent on it. - * If you want to say to somebody what kind of board you have, say that - * it uses Cirrus Logic processors (CD180). The power of the board is - * in those two chips. The rest of the board is the interface to the - * sbus and to the peripherals. Still, they did something smart: they - * reversed DTR and RTS to make on-board automatic hardware flow - * control usable. - * Thanks to Aurora Technologies for wasting my time, nerves and money. - */ - -#ifndef __LINUX_AURORA_H -#define __LINUX_AURORA_H - -#include <linux/serial.h> -#include <linux/serialP.h> - -#ifdef __KERNEL__ - -/* This is the number of boards to support. I've only tested this driver with - * one board, so it might not work. - */ -#define AURORA_NBOARD 1 - -/* Useful ? Yes. But you can safely comment the warnings if they annoy you - * (let me say that again: the warnings in the code, not this define). - */ -#define AURORA_PARANOIA_CHECK - -/* Well, after many lost nights, I found that the IRQ for this board is - * selected from four built-in values by writing some bits in the - * configuration register. This causes a little problem to occur: which - * IRQ to select ? Which one is the best for the user ? Well, I finally - * decided for the following algorithm: if the "bintr" value is not acceptable - * (not within type_1_irq[], then test the "intr" value, if that fails too, - * try each value from type_1_irq until succeded. Hope it's ok. - * You can safely reorder the irq's. - */ -#define TYPE_1_IRQS 4 -unsigned char type_1_irq[TYPE_1_IRQS] = { - 3, 5, 9, 13 -}; -/* I know something about another method of interrupt setting, but not enough. - * Also, this is for another type of board, so I first have to learn how to - * detect it. -#define TYPE_2_IRQS 3 -unsigned char type_2_irq[TYPE_2_IRQS] = { - 0, 0, 0 ** could anyone find these for me ? (see AURORA_ALLIRQ below) ** - }; -unsigned char type_2_mask[TYPE_2_IRQS] = { - 32, 64, 128 - }; -*/ - -/* The following section should only be modified by those who know what - * they're doing (or don't, but want to help with some feedback). Modifying - * anything raises a _big_ probability for your system to hang, but the - * sacrifice worths. (I sacrificed my ext2fs many, many times...) - */ - -/* This one tries to dump to console the name of almost every function called, - * and many other debugging info. - */ -#undef AURORA_DEBUG - -/* These are the most dangerous and useful defines. They do printk() during - * the interrupt processing routine(s), so if you manage to get "flooded" by - * irq's, start thinking about the "Power off/on" button... - */ -#undef AURORA_INTNORM /* This one enables the "normal" messages, but some - * of them cause flood, so I preffered putting - * them under a define */ -#undef AURORA_INT_DEBUG /* This one is really bad. */ - -/* Here's something helpful: after n irq's, the board will be disabled. This - * prevents irq flooding during debug (no need to think about power - * off/on anymore...) - */ -#define AURORA_FLOODPRO 10 - -/* This one helps finding which irq the board calls, in case of a strange/ - * unsupported board. AURORA_INT_DEBUG should be enabled, because I don't - * think /proc/interrupts or any command will be available in case of an irq - * flood... "allirq" is the list of all free irq's. - */ -/* -#define AURORA_ALLIRQ 6 -int allirq[AURORA_ALLIRQ]={ - 2,3,5,7,9,13 - }; -*/ - -/* These must not be modified. These values are assumed during the code for - * performance optimisations. - */ -#define AURORA_NCD180 2 /* two chips per board */ -#define AURORA_NPORT 8 /* 8 ports per chip */ - -/* several utilities */ -#define AURORA_BOARD(line) (((line) >> 4) & 0x01) -#define AURORA_CD180(line) (((line) >> 3) & 0x01) -#define AURORA_PORT(line) ((line) & 15) - -#define AURORA_TNPORTS (AURORA_NBOARD*AURORA_NCD180*AURORA_NPORT) - -/* Ticks per sec. Used for setting receiver timeout and break length */ -#define AURORA_TPS 4000 - -#define AURORA_MAGIC 0x0A18 - -/* Yeah, after heavy testing I decided it must be 6. - * Sure, You can change it if needed. - */ -#define AURORA_RXFIFO 6 /* Max. receiver FIFO size (1-8) */ - -#define AURORA_RXTH 7 - -struct aurora_reg1 { - __volatile__ unsigned char r; -}; - -struct aurora_reg128 { - __volatile__ unsigned char r[128]; -}; - -struct aurora_reg4 { - __volatile__ unsigned char r[4]; -}; - -struct Aurora_board { - unsigned long flags; - struct aurora_reg1 * r0; /* This is the board configuration - * register (write-only). */ - struct aurora_reg128 * r[2]; /* These are the registers for the - * two chips. */ - struct aurora_reg4 * r3; /* These are used for hardware-based - * acknowledge. Software-based ack is - * not supported by CD180. */ - unsigned int oscfreq; /* The on-board oscillator - * frequency, in Hz. */ - unsigned char irq; -#ifdef MODULE - signed char count; /* counts the use of the board */ -#endif - /* Values for the dtr_rts swapped mode. */ - unsigned char DTR; - unsigned char RTS; - unsigned char MSVDTR; - unsigned char MSVRTS; - /* Values for hardware acknowledge. */ - unsigned char ACK_MINT, ACK_TINT, ACK_RINT; -}; - -/* Board configuration register */ -#define AURORA_CFG_ENABLE_IO 8 -#define AURORA_CFG_ENABLE_IRQ 4 - -/* Board flags */ -#define AURORA_BOARD_PRESENT 0x00000001 -#define AURORA_BOARD_ACTIVE 0x00000002 -#define AURORA_BOARD_TYPE_2 0x00000004 /* don't know how to - * detect this yet */ -#define AURORA_BOARD_DTR_FLOW_OK 0x00000008 - -/* The story goes like this: Cirrus programmed the CD-180 chip to do automatic - * hardware flow control, and do it using CTS and DTR. CTS is ok, but, if you - * have a modem and the chip drops DTR, then the modem will drop the carrier - * (ain't that cute...). Luckily, the guys at Aurora decided to swap DTR and - * RTS, which makes the flow control usable. I hope that all the boards made - * by Aurora have these two signals swapped. If your's doesn't but you have a - * breakout box, you can try to reverse them yourself, then set the following - * flag. - */ -#undef AURORA_FORCE_DTR_FLOW - -/* In fact, a few more words have to be said about hardware flow control. - * This driver handles "output" flow control through the on-board facility - * CTS Auto Enable. For the "input" flow control there are two cases when - * the flow should be controlled. The first case is when the kernel is so - * busy that it cannot process IRQ's in time; this flow control can only be - * activated by the on-board chip, and if the board has RTS and DTR swapped, - * this facility is usable. The second case is when the application is so - * busy that it cannot receive bytes from the kernel, and this flow must be - * activated by software. This second case is not yet implemented in this - * driver. Unfortunately, I estimate that the second case is the one that - * occurs the most. - */ - - -struct Aurora_port { - int magic; - int baud_base; - int flags; - struct tty_struct * tty; - int count; - int blocked_open; - long event; - int timeout; - int close_delay; - unsigned char * xmit_buf; - int custom_divisor; - int xmit_head; - int xmit_tail; - int xmit_cnt; - wait_queue_head_t open_wait; - wait_queue_head_t close_wait; - struct tq_struct tqueue; - struct tq_struct tqueue_hangup; - short wakeup_chars; - short break_length; - unsigned short closing_wait; - unsigned char mark_mask; - unsigned char SRER; - unsigned char MSVR; - unsigned char COR2; -#ifdef AURORA_REPORT_OVERRUN - unsigned long overrun; -#endif -#ifdef AURORA_REPORT_FIFO - unsigned long hits[10]; -#endif -}; - -#endif -#endif /*__LINUX_AURORA_H*/ - |