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/*****************************************************************************/
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* istallion.c -- stallion intelligent multiport serial driver.
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* Copyright (C) 1996-1999 Stallion Technologies
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* Copyright (C) 1994-1996 Greg Ungerer.
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* This code is loosely based on the Linux serial driver, written by
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* Linus Torvalds, Theodore T'so and others.
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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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#include <linux/module.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/serial.h>
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#include <linux/seq_file.h>
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#include <linux/cdk.h>
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#include <linux/comstats.h>
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#include <linux/istallion.h>
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#include <linux/ioport.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/wait.h>
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#include <linux/eisa.h>
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#include <linux/ctype.h>
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#include <asm/uaccess.h>
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#include <linux/pci.h>
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/*****************************************************************************/
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* Define different board types. Not all of the following board types
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* are supported by this driver. But I will use the standard "assigned"
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* board numbers. Currently supported boards are abbreviated as:
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* ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
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#define BRD_STALLION 1
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#define BRD_ONBOARD2 3
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#define BRD_ONBOARDE 7
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#define BRD_BRUMBY BRD_BRUMBY4
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* Define a configuration structure to hold the board configuration.
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* Need to set this up in the code (for now) with the boards that are
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* to be configured into the system. This is what needs to be modified
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* when adding/removing/modifying boards. Each line entry in the
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* stli_brdconf[] array is a board. Each line contains io/irq/memory
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* ranges for that board (as well as what type of board it is).
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* { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
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* This line will configure an EasyConnection 8/64 at io address 2a0,
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* and shared memory address of cc000. Multiple EasyConnection 8/64
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* boards can share the same shared memory address space. No interrupt
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* is required for this board type.
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* { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
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* This line will configure an EasyConnection 8/64 EISA in slot 5 and
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* shared memory address of 0x80000000 (2 GByte). Multiple
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* EasyConnection 8/64 EISA boards can share the same shared memory
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* address space. No interrupt is required for this board type.
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* { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
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* This line will configure an ONboard (ISA type) at io address 240,
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* and shared memory address of d0000. Multiple ONboards can share
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* the same shared memory address space. No interrupt required.
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* { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
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* This line will configure a Brumby board (any number of ports!) at
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* io address 360 and shared memory address of c8000. All Brumby boards
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* configured into a system must have their own separate io and memory
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* addresses. No interrupt is required.
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* { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
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* This line will configure an original Stallion board at io address 330
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* and shared memory address d0000 (this would only be valid for a "V4.0"
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* or Rev.O Stallion board). All Stallion boards configured into the
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* system must have their own separate io and memory addresses. No
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* interrupt is required.
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unsigned long memaddr;
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static unsigned int stli_nrbrds;
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/* stli_lock must NOT be taken holding brd_lock */
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static spinlock_t stli_lock; /* TTY logic lock */
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static spinlock_t brd_lock; /* Board logic lock */
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* There is some experimental EISA board detection code in this driver.
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* By default it is disabled, but for those that want to try it out,
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* then set the define below to be 1.
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#define STLI_EISAPROBE 0
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/*****************************************************************************/
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* Define some important driver characteristics. Device major numbers
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* allocated as per Linux Device Registry.
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#ifndef STL_SIOMEMMAJOR
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#define STL_SIOMEMMAJOR 28
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#ifndef STL_SERIALMAJOR
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#define STL_SERIALMAJOR 24
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#ifndef STL_CALLOUTMAJOR
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#define STL_CALLOUTMAJOR 25
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/*****************************************************************************/
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* Define our local driver identity first. Set up stuff to deal with
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* all the local structures required by a serial tty driver.
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static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
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static char *stli_drvname = "istallion";
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static char *stli_drvversion = "5.6.0";
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static char *stli_serialname = "ttyE";
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static struct tty_driver *stli_serial;
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static const struct tty_port_operations stli_port_ops;
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#define STLI_TXBUFSIZE 4096
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* Use a fast local buffer for cooked characters. Typically a whole
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* bunch of cooked characters come in for a port, 1 at a time. So we
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* save those up into a local buffer, then write out the whole lot
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* with a large memcpy. Just use 1 buffer for all ports, since its
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* use it is only need for short periods of time by each port.
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static char *stli_txcookbuf;
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static int stli_txcooksize;
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static int stli_txcookrealsize;
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static struct tty_struct *stli_txcooktty;
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* Define a local default termios struct. All ports will be created
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* with this termios initially. Basically all it defines is a raw port
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* at 9600 baud, 8 data bits, no parity, 1 stop bit.
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static struct ktermios stli_deftermios = {
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.c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
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* Define global stats structures. Not used often, and can be
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* re-used for each stats call.
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static comstats_t stli_comstats;
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static struct asystats stli_cdkstats;
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/*****************************************************************************/
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static DEFINE_MUTEX(stli_brdslock);
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static struct stlibrd *stli_brds[STL_MAXBRDS];
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static int stli_shared;
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* Per board state flags. Used with the state field of the board struct.
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* Not really much here... All we need to do is keep track of whether
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* the board has been detected, and whether it is actually running a slave
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#define BST_STARTED 1
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* Define the set of port state flags. These are marked for internal
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* state purposes only, usually to do with the state of communications
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* with the slave. Most of them need to be updated atomically, so always
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* use the bit setting operations (unless protected by cli/sti).
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#define ST_DOFLUSHRX 7
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#define ST_DOFLUSHTX 8
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#define ST_GETSIGS 11
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* Define an array of board names as printable strings. Handy for
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* referencing boards when printing trace and stuff.
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static char *stli_brdnames[] = {
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/*****************************************************************************/
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* Define some string labels for arguments passed from the module
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* load line. These allow for easy board definitions, and easy
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* modification of the io, memory and irq resoucres.
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static char *board0[8];
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static char *board1[8];
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static char *board2[8];
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static char *board3[8];
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static char **stli_brdsp[] = {
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* Define a set of common board names, and types. This is used to
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* parse any module arguments.
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static struct stlibrdtype {
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{ "stallion", BRD_STALLION },
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{ "1", BRD_STALLION },
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{ "brumby", BRD_BRUMBY },
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{ "brumby4", BRD_BRUMBY },
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{ "brumby/4", BRD_BRUMBY },
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{ "brumby-4", BRD_BRUMBY },
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{ "brumby8", BRD_BRUMBY },
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{ "brumby/8", BRD_BRUMBY },
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{ "brumby-8", BRD_BRUMBY },
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{ "brumby16", BRD_BRUMBY },
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{ "brumby/16", BRD_BRUMBY },
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{ "brumby-16", BRD_BRUMBY },
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{ "onboard2", BRD_ONBOARD2 },
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{ "onboard-2", BRD_ONBOARD2 },
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{ "onboard/2", BRD_ONBOARD2 },
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{ "onboard-mc", BRD_ONBOARD2 },
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{ "onboard/mc", BRD_ONBOARD2 },
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{ "onboard-mca", BRD_ONBOARD2 },
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{ "onboard/mca", BRD_ONBOARD2 },
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{ "3", BRD_ONBOARD2 },
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{ "onboard", BRD_ONBOARD },
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{ "onboardat", BRD_ONBOARD },
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{ "4", BRD_ONBOARD },
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{ "onboarde", BRD_ONBOARDE },
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{ "onboard-e", BRD_ONBOARDE },
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{ "onboard/e", BRD_ONBOARDE },
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{ "onboard-ei", BRD_ONBOARDE },
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{ "onboard/ei", BRD_ONBOARDE },
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{ "7", BRD_ONBOARDE },
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{ "ecpat", BRD_ECP },
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{ "ec8/64", BRD_ECP },
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{ "ec8/64-at", BRD_ECP },
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{ "ec8/64-isa", BRD_ECP },
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{ "ecpe", BRD_ECPE },
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{ "ecpei", BRD_ECPE },
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{ "ec8/64-e", BRD_ECPE },
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{ "ec8/64-ei", BRD_ECPE },
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{ "ecpmc", BRD_ECPMC },
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{ "ec8/64-mc", BRD_ECPMC },
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{ "ec8/64-mca", BRD_ECPMC },
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{ "ecppci", BRD_ECPPCI },
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{ "ec/ra", BRD_ECPPCI },
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{ "ec/ra-pc", BRD_ECPPCI },
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{ "ec/ra-pci", BRD_ECPPCI },
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{ "29", BRD_ECPPCI },
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* Define the module agruments.
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MODULE_AUTHOR("Greg Ungerer");
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MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
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MODULE_LICENSE("GPL");
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module_param_array(board0, charp, NULL, 0);
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MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
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module_param_array(board1, charp, NULL, 0);
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MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
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module_param_array(board2, charp, NULL, 0);
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MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
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module_param_array(board3, charp, NULL, 0);
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MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
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#if STLI_EISAPROBE != 0
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* Set up a default memory address table for EISA board probing.
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* The default addresses are all bellow 1Mbyte, which has to be the
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* case anyway. They should be safe, since we only read values from
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* them, and interrupts are disabled while we do it. If the higher
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* memory support is compiled in then we also try probing around
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* the 1Gb, 2Gb and 3Gb areas as well...
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static unsigned long stli_eisamemprobeaddrs[] = {
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0xc0000, 0xd0000, 0xe0000, 0xf0000,
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0x80000000, 0x80010000, 0x80020000, 0x80030000,
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0x40000000, 0x40010000, 0x40020000, 0x40030000,
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0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
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0xff000000, 0xff010000, 0xff020000, 0xff030000,
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static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
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* Define the Stallion PCI vendor and device IDs.
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#ifndef PCI_DEVICE_ID_ECRA
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#define PCI_DEVICE_ID_ECRA 0x0004
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static struct pci_device_id istallion_pci_tbl[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), },
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MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
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static struct pci_driver stli_pcidriver;
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/*****************************************************************************/
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* Hardware configuration info for ECP boards. These defines apply
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* to the directly accessible io ports of the ECP. There is a set of
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* defines for each ECP board type, ISA, EISA, MCA and PCI.
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#define ECP_MEMSIZE (128 * 1024)
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#define ECP_PCIMEMSIZE (256 * 1024)
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#define ECP_ATPAGESIZE (4 * 1024)
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#define ECP_MCPAGESIZE (4 * 1024)
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#define ECP_EIPAGESIZE (64 * 1024)
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#define ECP_PCIPAGESIZE (64 * 1024)
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#define STL_EISAID 0x8c4e
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* Important defines for the ISA class of ECP board.
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#define ECP_ATCONFR 1
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#define ECP_ATMEMAR 2
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#define ECP_ATMEMPR 3
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#define ECP_ATSTOP 0x1
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#define ECP_ATINTENAB 0x10
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#define ECP_ATENABLE 0x20
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#define ECP_ATDISABLE 0x00
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#define ECP_ATADDRMASK 0x3f000
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#define ECP_ATADDRSHFT 12
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* Important defines for the EISA class of ECP board.
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#define ECP_EIMEMARL 1
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#define ECP_EICONFR 2
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#define ECP_EIMEMARH 3
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#define ECP_EIENABLE 0x1
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#define ECP_EIDISABLE 0x0
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#define ECP_EISTOP 0x4
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#define ECP_EIEDGE 0x00
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#define ECP_EILEVEL 0x80
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#define ECP_EIADDRMASKL 0x00ff0000
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#define ECP_EIADDRSHFTL 16
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#define ECP_EIADDRMASKH 0xff000000
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#define ECP_EIADDRSHFTH 24
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#define ECP_EIBRDENAB 0xc84
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#define ECP_EISAID 0x4
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* Important defines for the Micro-channel class of ECP board.
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* (It has a lot in common with the ISA boards.)
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#define ECP_MCCONFR 1
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#define ECP_MCSTOP 0x20
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#define ECP_MCENABLE 0x80
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#define ECP_MCDISABLE 0x00
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* Important defines for the PCI class of ECP board.
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* (It has a lot in common with the other ECP boards.)
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#define ECP_PCIIREG 0
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#define ECP_PCICONFR 1
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#define ECP_PCISTOP 0x01
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* Hardware configuration info for ONboard and Brumby boards. These
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* defines apply to the directly accessible io ports of these boards.
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#define ONB_IOSIZE 16
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#define ONB_MEMSIZE (64 * 1024)
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#define ONB_ATPAGESIZE (64 * 1024)
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#define ONB_MCPAGESIZE (64 * 1024)
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#define ONB_EIMEMSIZE (128 * 1024)
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#define ONB_EIPAGESIZE (64 * 1024)
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* Important defines for the ISA class of ONboard board.
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#define ONB_ATMEMAR 1
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#define ONB_ATCONFR 2
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#define ONB_ATSTOP 0x4
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#define ONB_ATENABLE 0x01
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#define ONB_ATDISABLE 0x00
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#define ONB_ATADDRMASK 0xff0000
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#define ONB_ATADDRSHFT 16
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#define ONB_MEMENABLO 0
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#define ONB_MEMENABHI 0x02
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* Important defines for the EISA class of ONboard board.
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#define ONB_EIMEMARL 1
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#define ONB_EICONFR 2
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#define ONB_EIMEMARH 3
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#define ONB_EIENABLE 0x1
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#define ONB_EIDISABLE 0x0
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#define ONB_EISTOP 0x4
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#define ONB_EIEDGE 0x00
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#define ONB_EILEVEL 0x80
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#define ONB_EIADDRMASKL 0x00ff0000
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#define ONB_EIADDRSHFTL 16
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#define ONB_EIADDRMASKH 0xff000000
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#define ONB_EIADDRSHFTH 24
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#define ONB_EIBRDENAB 0xc84
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#define ONB_EISAID 0x1
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* Important defines for the Brumby boards. They are pretty simple,
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* there is not much that is programmably configurable.
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#define BBY_IOSIZE 16
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#define BBY_MEMSIZE (64 * 1024)
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#define BBY_PAGESIZE (16 * 1024)
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#define BBY_ATCONFR 1
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#define BBY_ATSTOP 0x4
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* Important defines for the Stallion boards. They are pretty simple,
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* there is not much that is programmably configurable.
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#define STAL_IOSIZE 16
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#define STAL_MEMSIZE (64 * 1024)
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#define STAL_PAGESIZE (64 * 1024)
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* Define the set of status register values for EasyConnection panels.
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* The signature will return with the status value for each panel. From
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* this we can determine what is attached to the board - before we have
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* actually down loaded any code to it.
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#define ECH_PNLSTATUS 2
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#define ECH_PNL16PORT 0x20
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#define ECH_PNLIDMASK 0x07
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#define ECH_PNLXPID 0x40
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#define ECH_PNLINTRPEND 0x80
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* Define some macros to do things to the board. Even those these boards
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* are somewhat related there is often significantly different ways of
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* doing some operation on it (like enable, paging, reset, etc). So each
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* board class has a set of functions which do the commonly required
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* operations. The macros below basically just call these functions,
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* generally checking for a NULL function - which means that the board
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* needs nothing done to it to achieve this operation!
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#define EBRDINIT(brdp) \
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if (brdp->init != NULL) \
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#define EBRDENABLE(brdp) \
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if (brdp->enable != NULL) \
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(* brdp->enable)(brdp);
561
#define EBRDDISABLE(brdp) \
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if (brdp->disable != NULL) \
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(* brdp->disable)(brdp);
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#define EBRDINTR(brdp) \
566
if (brdp->intr != NULL) \
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(* brdp->intr)(brdp);
569
#define EBRDRESET(brdp) \
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if (brdp->reset != NULL) \
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(* brdp->reset)(brdp);
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#define EBRDGETMEMPTR(brdp,offset) \
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(* brdp->getmemptr)(brdp, offset, __LINE__)
577
* Define the maximal baud rate, and the default baud base for ports.
579
#define STL_MAXBAUD 460800
580
#define STL_BAUDBASE 115200
581
#define STL_CLOSEDELAY (5 * HZ / 10)
583
/*****************************************************************************/
586
* Define macros to extract a brd or port number from a minor number.
588
#define MINOR2BRD(min) (((min) & 0xc0) >> 6)
589
#define MINOR2PORT(min) ((min) & 0x3f)
591
/*****************************************************************************/
594
* Prototype all functions in this driver!
597
static int stli_parsebrd(struct stlconf *confp, char **argp);
598
static int stli_open(struct tty_struct *tty, struct file *filp);
599
static void stli_close(struct tty_struct *tty, struct file *filp);
600
static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
601
static int stli_putchar(struct tty_struct *tty, unsigned char ch);
602
static void stli_flushchars(struct tty_struct *tty);
603
static int stli_writeroom(struct tty_struct *tty);
604
static int stli_charsinbuffer(struct tty_struct *tty);
605
static int stli_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg);
606
static void stli_settermios(struct tty_struct *tty, struct ktermios *old);
607
static void stli_throttle(struct tty_struct *tty);
608
static void stli_unthrottle(struct tty_struct *tty);
609
static void stli_stop(struct tty_struct *tty);
610
static void stli_start(struct tty_struct *tty);
611
static void stli_flushbuffer(struct tty_struct *tty);
612
static int stli_breakctl(struct tty_struct *tty, int state);
613
static void stli_waituntilsent(struct tty_struct *tty, int timeout);
614
static void stli_sendxchar(struct tty_struct *tty, char ch);
615
static void stli_hangup(struct tty_struct *tty);
617
static int stli_brdinit(struct stlibrd *brdp);
618
static int stli_startbrd(struct stlibrd *brdp);
619
static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
620
static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
621
static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg);
622
static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp);
623
static void stli_poll(unsigned long arg);
624
static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
625
static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp);
626
static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
627
static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
628
static int stli_setport(struct tty_struct *tty);
629
static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
630
static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
631
static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
632
static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
633
static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
634
static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
635
static long stli_mktiocm(unsigned long sigvalue);
636
static void stli_read(struct stlibrd *brdp, struct stliport *portp);
637
static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
638
static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp);
639
static int stli_getbrdstats(combrd_t __user *bp);
640
static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp);
641
static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp);
642
static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
643
static int stli_getportstruct(struct stliport __user *arg);
644
static int stli_getbrdstruct(struct stlibrd __user *arg);
645
static struct stlibrd *stli_allocbrd(void);
647
static void stli_ecpinit(struct stlibrd *brdp);
648
static void stli_ecpenable(struct stlibrd *brdp);
649
static void stli_ecpdisable(struct stlibrd *brdp);
650
static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
651
static void stli_ecpreset(struct stlibrd *brdp);
652
static void stli_ecpintr(struct stlibrd *brdp);
653
static void stli_ecpeiinit(struct stlibrd *brdp);
654
static void stli_ecpeienable(struct stlibrd *brdp);
655
static void stli_ecpeidisable(struct stlibrd *brdp);
656
static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
657
static void stli_ecpeireset(struct stlibrd *brdp);
658
static void stli_ecpmcenable(struct stlibrd *brdp);
659
static void stli_ecpmcdisable(struct stlibrd *brdp);
660
static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
661
static void stli_ecpmcreset(struct stlibrd *brdp);
662
static void stli_ecppciinit(struct stlibrd *brdp);
663
static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
664
static void stli_ecppcireset(struct stlibrd *brdp);
666
static void stli_onbinit(struct stlibrd *brdp);
667
static void stli_onbenable(struct stlibrd *brdp);
668
static void stli_onbdisable(struct stlibrd *brdp);
669
static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
670
static void stli_onbreset(struct stlibrd *brdp);
671
static void stli_onbeinit(struct stlibrd *brdp);
672
static void stli_onbeenable(struct stlibrd *brdp);
673
static void stli_onbedisable(struct stlibrd *brdp);
674
static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
675
static void stli_onbereset(struct stlibrd *brdp);
676
static void stli_bbyinit(struct stlibrd *brdp);
677
static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
678
static void stli_bbyreset(struct stlibrd *brdp);
679
static void stli_stalinit(struct stlibrd *brdp);
680
static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
681
static void stli_stalreset(struct stlibrd *brdp);
683
static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
685
static int stli_initecp(struct stlibrd *brdp);
686
static int stli_initonb(struct stlibrd *brdp);
687
#if STLI_EISAPROBE != 0
688
static int stli_eisamemprobe(struct stlibrd *brdp);
690
static int stli_initports(struct stlibrd *brdp);
692
/*****************************************************************************/
695
* Define the driver info for a user level shared memory device. This
696
* device will work sort of like the /dev/kmem device - except that it
697
* will give access to the shared memory on the Stallion intelligent
698
* board. This is also a very useful debugging tool.
700
static const struct file_operations stli_fsiomem = {
701
.owner = THIS_MODULE,
702
.read = stli_memread,
703
.write = stli_memwrite,
704
.unlocked_ioctl = stli_memioctl,
705
.llseek = default_llseek,
708
/*****************************************************************************/
711
* Define a timer_list entry for our poll routine. The slave board
712
* is polled every so often to see if anything needs doing. This is
713
* much cheaper on host cpu than using interrupts. It turns out to
714
* not increase character latency by much either...
716
static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
718
static int stli_timeron;
721
* Define the calculation for the timeout routine.
723
#define STLI_TIMEOUT (jiffies + 1)
725
/*****************************************************************************/
727
static struct class *istallion_class;
729
static void stli_cleanup_ports(struct stlibrd *brdp)
731
struct stliport *portp;
733
struct tty_struct *tty;
735
for (j = 0; j < STL_MAXPORTS; j++) {
736
portp = brdp->ports[j];
738
tty = tty_port_tty_get(&portp->port);
748
/*****************************************************************************/
751
* Parse the supplied argument string, into the board conf struct.
754
static int stli_parsebrd(struct stlconf *confp, char **argp)
759
if (argp[0] == NULL || *argp[0] == 0)
762
for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
765
for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
766
if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
769
if (i == ARRAY_SIZE(stli_brdstr)) {
770
printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]);
774
confp->brdtype = stli_brdstr[i].type;
775
if (argp[1] != NULL && *argp[1] != 0)
776
confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
777
if (argp[2] != NULL && *argp[2] != 0)
778
confp->memaddr = simple_strtoul(argp[2], NULL, 0);
782
/*****************************************************************************/
785
* On the first open of the device setup the port hardware, and
786
* initialize the per port data structure. Since initializing the port
787
* requires several commands to the board we will need to wait for any
788
* other open that is already initializing the port.
790
* Locking: protected by the port mutex.
793
static int stli_activate(struct tty_port *port, struct tty_struct *tty)
795
struct stliport *portp = container_of(port, struct stliport, port);
796
struct stlibrd *brdp = stli_brds[portp->brdnr];
799
if ((rc = stli_initopen(tty, brdp, portp)) >= 0)
800
clear_bit(TTY_IO_ERROR, &tty->flags);
801
wake_up_interruptible(&portp->raw_wait);
805
static int stli_open(struct tty_struct *tty, struct file *filp)
807
struct stlibrd *brdp;
808
struct stliport *portp;
809
unsigned int minordev, brdnr, portnr;
811
minordev = tty->index;
812
brdnr = MINOR2BRD(minordev);
813
if (brdnr >= stli_nrbrds)
815
brdp = stli_brds[brdnr];
818
if (!test_bit(BST_STARTED, &brdp->state))
820
portnr = MINOR2PORT(minordev);
821
if (portnr > brdp->nrports)
824
portp = brdp->ports[portnr];
827
if (portp->devnr < 1)
830
tty->driver_data = portp;
831
return tty_port_open(&portp->port, tty, filp);
835
/*****************************************************************************/
837
static void stli_shutdown(struct tty_port *port)
839
struct stlibrd *brdp;
842
struct stliport *portp = container_of(port, struct stliport, port);
844
if (portp->brdnr >= stli_nrbrds)
846
brdp = stli_brds[portp->brdnr];
851
* May want to wait for data to drain before closing. The BUSY
852
* flag keeps track of whether we are still transmitting or not.
853
* It is updated by messages from the slave - indicating when all
854
* chars really have drained.
857
if (!test_bit(ST_CLOSING, &portp->state))
858
stli_rawclose(brdp, portp, 0, 0);
860
spin_lock_irqsave(&stli_lock, flags);
861
clear_bit(ST_TXBUSY, &portp->state);
862
clear_bit(ST_RXSTOP, &portp->state);
863
spin_unlock_irqrestore(&stli_lock, flags);
865
ftype = FLUSHTX | FLUSHRX;
866
stli_cmdwait(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
869
static void stli_close(struct tty_struct *tty, struct file *filp)
871
struct stliport *portp = tty->driver_data;
875
spin_lock_irqsave(&stli_lock, flags);
876
/* Flush any internal buffering out first */
877
if (tty == stli_txcooktty)
878
stli_flushchars(tty);
879
spin_unlock_irqrestore(&stli_lock, flags);
880
tty_port_close(&portp->port, tty, filp);
883
/*****************************************************************************/
886
* Carry out first open operations on a port. This involves a number of
887
* commands to be sent to the slave. We need to open the port, set the
888
* notification events, set the initial port settings, get and set the
889
* initial signal values. We sleep and wait in between each one. But
890
* this still all happens pretty quickly.
893
static int stli_initopen(struct tty_struct *tty,
894
struct stlibrd *brdp, struct stliport *portp)
900
if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
903
memset(&nt, 0, sizeof(asynotify_t));
904
nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
906
if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
907
sizeof(asynotify_t), 0)) < 0)
910
stli_mkasyport(tty, portp, &aport, tty->termios);
911
if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
912
sizeof(asyport_t), 0)) < 0)
915
set_bit(ST_GETSIGS, &portp->state);
916
if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
917
sizeof(asysigs_t), 1)) < 0)
919
if (test_and_clear_bit(ST_GETSIGS, &portp->state))
920
portp->sigs = stli_mktiocm(portp->asig.sigvalue);
921
stli_mkasysigs(&portp->asig, 1, 1);
922
if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
923
sizeof(asysigs_t), 0)) < 0)
929
/*****************************************************************************/
932
* Send an open message to the slave. This will sleep waiting for the
933
* acknowledgement, so must have user context. We need to co-ordinate
934
* with close events here, since we don't want open and close events
938
static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
940
cdkhdr_t __iomem *hdrp;
941
cdkctrl_t __iomem *cp;
942
unsigned char __iomem *bits;
947
* Send a message to the slave to open this port.
951
* Slave is already closing this port. This can happen if a hangup
952
* occurs on this port. So we must wait until it is complete. The
953
* order of opens and closes may not be preserved across shared
954
* memory, so we must wait until it is complete.
956
wait_event_interruptible_tty(portp->raw_wait,
957
!test_bit(ST_CLOSING, &portp->state));
958
if (signal_pending(current)) {
963
* Everything is ready now, so write the open message into shared
964
* memory. Once the message is in set the service bits to say that
965
* this port wants service.
967
spin_lock_irqsave(&brd_lock, flags);
969
cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
970
writel(arg, &cp->openarg);
971
writeb(1, &cp->open);
972
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
973
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
975
writeb(readb(bits) | portp->portbit, bits);
979
spin_unlock_irqrestore(&brd_lock, flags);
984
* Slave is in action, so now we must wait for the open acknowledgment
988
set_bit(ST_OPENING, &portp->state);
989
spin_unlock_irqrestore(&brd_lock, flags);
991
wait_event_interruptible_tty(portp->raw_wait,
992
!test_bit(ST_OPENING, &portp->state));
993
if (signal_pending(current))
996
if ((rc == 0) && (portp->rc != 0))
1001
/*****************************************************************************/
1004
* Send a close message to the slave. Normally this will sleep waiting
1005
* for the acknowledgement, but if wait parameter is 0 it will not. If
1006
* wait is true then must have user context (to sleep).
1009
static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1011
cdkhdr_t __iomem *hdrp;
1012
cdkctrl_t __iomem *cp;
1013
unsigned char __iomem *bits;
1014
unsigned long flags;
1018
* Slave is already closing this port. This can happen if a hangup
1019
* occurs on this port.
1022
wait_event_interruptible_tty(portp->raw_wait,
1023
!test_bit(ST_CLOSING, &portp->state));
1024
if (signal_pending(current)) {
1025
return -ERESTARTSYS;
1030
* Write the close command into shared memory.
1032
spin_lock_irqsave(&brd_lock, flags);
1034
cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1035
writel(arg, &cp->closearg);
1036
writeb(1, &cp->close);
1037
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1038
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1040
writeb(readb(bits) |portp->portbit, bits);
1043
set_bit(ST_CLOSING, &portp->state);
1044
spin_unlock_irqrestore(&brd_lock, flags);
1050
* Slave is in action, so now we must wait for the open acknowledgment
1054
wait_event_interruptible_tty(portp->raw_wait,
1055
!test_bit(ST_CLOSING, &portp->state));
1056
if (signal_pending(current))
1059
if ((rc == 0) && (portp->rc != 0))
1064
/*****************************************************************************/
1067
* Send a command to the slave and wait for the response. This must
1068
* have user context (it sleeps). This routine is generic in that it
1069
* can send any type of command. Its purpose is to wait for that command
1070
* to complete (as opposed to initiating the command then returning).
1073
static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1076
* no need for wait_event_tty because clearing ST_CMDING cannot block
1079
wait_event_interruptible(portp->raw_wait,
1080
!test_bit(ST_CMDING, &portp->state));
1081
if (signal_pending(current))
1082
return -ERESTARTSYS;
1084
stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1086
wait_event_interruptible(portp->raw_wait,
1087
!test_bit(ST_CMDING, &portp->state));
1088
if (signal_pending(current))
1089
return -ERESTARTSYS;
1096
/*****************************************************************************/
1099
* Send the termios settings for this port to the slave. This sleeps
1100
* waiting for the command to complete - so must have user context.
1103
static int stli_setport(struct tty_struct *tty)
1105
struct stliport *portp = tty->driver_data;
1106
struct stlibrd *brdp;
1111
if (portp->brdnr >= stli_nrbrds)
1113
brdp = stli_brds[portp->brdnr];
1117
stli_mkasyport(tty, portp, &aport, tty->termios);
1118
return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1121
/*****************************************************************************/
1123
static int stli_carrier_raised(struct tty_port *port)
1125
struct stliport *portp = container_of(port, struct stliport, port);
1126
return (portp->sigs & TIOCM_CD) ? 1 : 0;
1129
static void stli_dtr_rts(struct tty_port *port, int on)
1131
struct stliport *portp = container_of(port, struct stliport, port);
1132
struct stlibrd *brdp = stli_brds[portp->brdnr];
1133
stli_mkasysigs(&portp->asig, on, on);
1134
if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1135
sizeof(asysigs_t), 0) < 0)
1136
printk(KERN_WARNING "istallion: dtr set failed.\n");
1140
/*****************************************************************************/
1143
* Write routine. Take the data and put it in the shared memory ring
1144
* queue. If port is not already sending chars then need to mark the
1145
* service bits for this port.
1148
static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1150
cdkasy_t __iomem *ap;
1151
cdkhdr_t __iomem *hdrp;
1152
unsigned char __iomem *bits;
1153
unsigned char __iomem *shbuf;
1154
unsigned char *chbuf;
1155
struct stliport *portp;
1156
struct stlibrd *brdp;
1157
unsigned int len, stlen, head, tail, size;
1158
unsigned long flags;
1160
if (tty == stli_txcooktty)
1161
stli_flushchars(tty);
1162
portp = tty->driver_data;
1165
if (portp->brdnr >= stli_nrbrds)
1167
brdp = stli_brds[portp->brdnr];
1170
chbuf = (unsigned char *) buf;
1173
* All data is now local, shove as much as possible into shared memory.
1175
spin_lock_irqsave(&brd_lock, flags);
1177
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1178
head = (unsigned int) readw(&ap->txq.head);
1179
tail = (unsigned int) readw(&ap->txq.tail);
1180
if (tail != ((unsigned int) readw(&ap->txq.tail)))
1181
tail = (unsigned int) readw(&ap->txq.tail);
1182
size = portp->txsize;
1184
len = size - (head - tail) - 1;
1185
stlen = size - head;
1187
len = tail - head - 1;
1191
len = min(len, (unsigned int)count);
1193
shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
1196
stlen = min(len, stlen);
1197
memcpy_toio(shbuf + head, chbuf, stlen);
1208
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1209
writew(head, &ap->txq.head);
1210
if (test_bit(ST_TXBUSY, &portp->state)) {
1211
if (readl(&ap->changed.data) & DT_TXEMPTY)
1212
writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1214
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1215
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1217
writeb(readb(bits) | portp->portbit, bits);
1218
set_bit(ST_TXBUSY, &portp->state);
1220
spin_unlock_irqrestore(&brd_lock, flags);
1225
/*****************************************************************************/
1228
* Output a single character. We put it into a temporary local buffer
1229
* (for speed) then write out that buffer when the flushchars routine
1230
* is called. There is a safety catch here so that if some other port
1231
* writes chars before the current buffer has been, then we write them
1232
* first them do the new ports.
1235
static int stli_putchar(struct tty_struct *tty, unsigned char ch)
1237
if (tty != stli_txcooktty) {
1238
if (stli_txcooktty != NULL)
1239
stli_flushchars(stli_txcooktty);
1240
stli_txcooktty = tty;
1243
stli_txcookbuf[stli_txcooksize++] = ch;
1247
/*****************************************************************************/
1250
* Transfer characters from the local TX cooking buffer to the board.
1251
* We sort of ignore the tty that gets passed in here. We rely on the
1252
* info stored with the TX cook buffer to tell us which port to flush
1253
* the data on. In any case we clean out the TX cook buffer, for re-use
1257
static void stli_flushchars(struct tty_struct *tty)
1259
cdkhdr_t __iomem *hdrp;
1260
unsigned char __iomem *bits;
1261
cdkasy_t __iomem *ap;
1262
struct tty_struct *cooktty;
1263
struct stliport *portp;
1264
struct stlibrd *brdp;
1265
unsigned int len, stlen, head, tail, size, count, cooksize;
1267
unsigned char __iomem *shbuf;
1268
unsigned long flags;
1270
cooksize = stli_txcooksize;
1271
cooktty = stli_txcooktty;
1272
stli_txcooksize = 0;
1273
stli_txcookrealsize = 0;
1274
stli_txcooktty = NULL;
1276
if (cooktty == NULL)
1283
portp = tty->driver_data;
1286
if (portp->brdnr >= stli_nrbrds)
1288
brdp = stli_brds[portp->brdnr];
1292
spin_lock_irqsave(&brd_lock, flags);
1295
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1296
head = (unsigned int) readw(&ap->txq.head);
1297
tail = (unsigned int) readw(&ap->txq.tail);
1298
if (tail != ((unsigned int) readw(&ap->txq.tail)))
1299
tail = (unsigned int) readw(&ap->txq.tail);
1300
size = portp->txsize;
1302
len = size - (head - tail) - 1;
1303
stlen = size - head;
1305
len = tail - head - 1;
1309
len = min(len, cooksize);
1311
shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
1312
buf = stli_txcookbuf;
1315
stlen = min(len, stlen);
1316
memcpy_toio(shbuf + head, buf, stlen);
1327
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1328
writew(head, &ap->txq.head);
1330
if (test_bit(ST_TXBUSY, &portp->state)) {
1331
if (readl(&ap->changed.data) & DT_TXEMPTY)
1332
writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1334
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1335
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1337
writeb(readb(bits) | portp->portbit, bits);
1338
set_bit(ST_TXBUSY, &portp->state);
1341
spin_unlock_irqrestore(&brd_lock, flags);
1344
/*****************************************************************************/
1346
static int stli_writeroom(struct tty_struct *tty)
1348
cdkasyrq_t __iomem *rp;
1349
struct stliport *portp;
1350
struct stlibrd *brdp;
1351
unsigned int head, tail, len;
1352
unsigned long flags;
1354
if (tty == stli_txcooktty) {
1355
if (stli_txcookrealsize != 0) {
1356
len = stli_txcookrealsize - stli_txcooksize;
1361
portp = tty->driver_data;
1364
if (portp->brdnr >= stli_nrbrds)
1366
brdp = stli_brds[portp->brdnr];
1370
spin_lock_irqsave(&brd_lock, flags);
1372
rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1373
head = (unsigned int) readw(&rp->head);
1374
tail = (unsigned int) readw(&rp->tail);
1375
if (tail != ((unsigned int) readw(&rp->tail)))
1376
tail = (unsigned int) readw(&rp->tail);
1377
len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1380
spin_unlock_irqrestore(&brd_lock, flags);
1382
if (tty == stli_txcooktty) {
1383
stli_txcookrealsize = len;
1384
len -= stli_txcooksize;
1389
/*****************************************************************************/
1392
* Return the number of characters in the transmit buffer. Normally we
1393
* will return the number of chars in the shared memory ring queue.
1394
* We need to kludge around the case where the shared memory buffer is
1395
* empty but not all characters have drained yet, for this case just
1396
* return that there is 1 character in the buffer!
1399
static int stli_charsinbuffer(struct tty_struct *tty)
1401
cdkasyrq_t __iomem *rp;
1402
struct stliport *portp;
1403
struct stlibrd *brdp;
1404
unsigned int head, tail, len;
1405
unsigned long flags;
1407
if (tty == stli_txcooktty)
1408
stli_flushchars(tty);
1409
portp = tty->driver_data;
1412
if (portp->brdnr >= stli_nrbrds)
1414
brdp = stli_brds[portp->brdnr];
1418
spin_lock_irqsave(&brd_lock, flags);
1420
rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1421
head = (unsigned int) readw(&rp->head);
1422
tail = (unsigned int) readw(&rp->tail);
1423
if (tail != ((unsigned int) readw(&rp->tail)))
1424
tail = (unsigned int) readw(&rp->tail);
1425
len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1426
if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1429
spin_unlock_irqrestore(&brd_lock, flags);
1434
/*****************************************************************************/
1437
* Generate the serial struct info.
1440
static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
1442
struct serial_struct sio;
1443
struct stlibrd *brdp;
1445
memset(&sio, 0, sizeof(struct serial_struct));
1446
sio.type = PORT_UNKNOWN;
1447
sio.line = portp->portnr;
1449
sio.flags = portp->port.flags;
1450
sio.baud_base = portp->baud_base;
1451
sio.close_delay = portp->port.close_delay;
1452
sio.closing_wait = portp->closing_wait;
1453
sio.custom_divisor = portp->custom_divisor;
1454
sio.xmit_fifo_size = 0;
1457
brdp = stli_brds[portp->brdnr];
1459
sio.port = brdp->iobase;
1461
return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1465
/*****************************************************************************/
1468
* Set port according to the serial struct info.
1469
* At this point we do not do any auto-configure stuff, so we will
1470
* just quietly ignore any requests to change irq, etc.
1473
static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp)
1475
struct serial_struct sio;
1477
struct stliport *portp = tty->driver_data;
1479
if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1481
if (!capable(CAP_SYS_ADMIN)) {
1482
if ((sio.baud_base != portp->baud_base) ||
1483
(sio.close_delay != portp->port.close_delay) ||
1484
((sio.flags & ~ASYNC_USR_MASK) !=
1485
(portp->port.flags & ~ASYNC_USR_MASK)))
1489
portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) |
1490
(sio.flags & ASYNC_USR_MASK);
1491
portp->baud_base = sio.baud_base;
1492
portp->port.close_delay = sio.close_delay;
1493
portp->closing_wait = sio.closing_wait;
1494
portp->custom_divisor = sio.custom_divisor;
1496
if ((rc = stli_setport(tty)) < 0)
1501
/*****************************************************************************/
1503
static int stli_tiocmget(struct tty_struct *tty)
1505
struct stliport *portp = tty->driver_data;
1506
struct stlibrd *brdp;
1511
if (portp->brdnr >= stli_nrbrds)
1513
brdp = stli_brds[portp->brdnr];
1516
if (tty->flags & (1 << TTY_IO_ERROR))
1519
if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1520
&portp->asig, sizeof(asysigs_t), 1)) < 0)
1523
return stli_mktiocm(portp->asig.sigvalue);
1526
static int stli_tiocmset(struct tty_struct *tty,
1527
unsigned int set, unsigned int clear)
1529
struct stliport *portp = tty->driver_data;
1530
struct stlibrd *brdp;
1531
int rts = -1, dtr = -1;
1535
if (portp->brdnr >= stli_nrbrds)
1537
brdp = stli_brds[portp->brdnr];
1540
if (tty->flags & (1 << TTY_IO_ERROR))
1543
if (set & TIOCM_RTS)
1545
if (set & TIOCM_DTR)
1547
if (clear & TIOCM_RTS)
1549
if (clear & TIOCM_DTR)
1552
stli_mkasysigs(&portp->asig, dtr, rts);
1554
return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1555
sizeof(asysigs_t), 0);
1558
static int stli_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)
1560
struct stliport *portp;
1561
struct stlibrd *brdp;
1563
void __user *argp = (void __user *)arg;
1565
portp = tty->driver_data;
1568
if (portp->brdnr >= stli_nrbrds)
1570
brdp = stli_brds[portp->brdnr];
1574
if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1575
(cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1576
if (tty->flags & (1 << TTY_IO_ERROR))
1584
rc = stli_getserial(portp, argp);
1587
rc = stli_setserial(tty, argp);
1590
rc = put_user(portp->pflag, (unsigned __user *)argp);
1593
if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
1596
case COM_GETPORTSTATS:
1597
rc = stli_getportstats(tty, portp, argp);
1599
case COM_CLRPORTSTATS:
1600
rc = stli_clrportstats(portp, argp);
1606
case TIOCSERGSTRUCT:
1607
case TIOCSERGETMULTI:
1608
case TIOCSERSETMULTI:
1617
/*****************************************************************************/
1620
* This routine assumes that we have user context and can sleep.
1621
* Looks like it is true for the current ttys implementation..!!
1624
static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
1626
struct stliport *portp;
1627
struct stlibrd *brdp;
1628
struct ktermios *tiosp;
1631
portp = tty->driver_data;
1634
if (portp->brdnr >= stli_nrbrds)
1636
brdp = stli_brds[portp->brdnr];
1640
tiosp = tty->termios;
1642
stli_mkasyport(tty, portp, &aport, tiosp);
1643
stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
1644
stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
1645
stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1646
sizeof(asysigs_t), 0);
1647
if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
1648
tty->hw_stopped = 0;
1649
if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
1650
wake_up_interruptible(&portp->port.open_wait);
1653
/*****************************************************************************/
1656
* Attempt to flow control who ever is sending us data. We won't really
1657
* do any flow control action here. We can't directly, and even if we
1658
* wanted to we would have to send a command to the slave. The slave
1659
* knows how to flow control, and will do so when its buffers reach its
1660
* internal high water marks. So what we will do is set a local state
1661
* bit that will stop us sending any RX data up from the poll routine
1662
* (which is the place where RX data from the slave is handled).
1665
static void stli_throttle(struct tty_struct *tty)
1667
struct stliport *portp = tty->driver_data;
1670
set_bit(ST_RXSTOP, &portp->state);
1673
/*****************************************************************************/
1676
* Unflow control the device sending us data... That means that all
1677
* we have to do is clear the RXSTOP state bit. The next poll call
1678
* will then be able to pass the RX data back up.
1681
static void stli_unthrottle(struct tty_struct *tty)
1683
struct stliport *portp = tty->driver_data;
1686
clear_bit(ST_RXSTOP, &portp->state);
1689
/*****************************************************************************/
1692
* Stop the transmitter.
1695
static void stli_stop(struct tty_struct *tty)
1699
/*****************************************************************************/
1702
* Start the transmitter again.
1705
static void stli_start(struct tty_struct *tty)
1709
/*****************************************************************************/
1713
* Hangup this port. This is pretty much like closing the port, only
1714
* a little more brutal. No waiting for data to drain. Shutdown the
1715
* port and maybe drop signals. This is rather tricky really. We want
1716
* to close the port as well.
1719
static void stli_hangup(struct tty_struct *tty)
1721
struct stliport *portp = tty->driver_data;
1722
tty_port_hangup(&portp->port);
1725
/*****************************************************************************/
1728
* Flush characters from the lower buffer. We may not have user context
1729
* so we cannot sleep waiting for it to complete. Also we need to check
1730
* if there is chars for this port in the TX cook buffer, and flush them
1734
static void stli_flushbuffer(struct tty_struct *tty)
1736
struct stliport *portp;
1737
struct stlibrd *brdp;
1738
unsigned long ftype, flags;
1740
portp = tty->driver_data;
1743
if (portp->brdnr >= stli_nrbrds)
1745
brdp = stli_brds[portp->brdnr];
1749
spin_lock_irqsave(&brd_lock, flags);
1750
if (tty == stli_txcooktty) {
1751
stli_txcooktty = NULL;
1752
stli_txcooksize = 0;
1753
stli_txcookrealsize = 0;
1755
if (test_bit(ST_CMDING, &portp->state)) {
1756
set_bit(ST_DOFLUSHTX, &portp->state);
1759
if (test_bit(ST_DOFLUSHRX, &portp->state)) {
1761
clear_bit(ST_DOFLUSHRX, &portp->state);
1763
__stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
1765
spin_unlock_irqrestore(&brd_lock, flags);
1769
/*****************************************************************************/
1771
static int stli_breakctl(struct tty_struct *tty, int state)
1773
struct stlibrd *brdp;
1774
struct stliport *portp;
1777
portp = tty->driver_data;
1780
if (portp->brdnr >= stli_nrbrds)
1782
brdp = stli_brds[portp->brdnr];
1786
arg = (state == -1) ? BREAKON : BREAKOFF;
1787
stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
1791
/*****************************************************************************/
1793
static void stli_waituntilsent(struct tty_struct *tty, int timeout)
1795
struct stliport *portp;
1798
portp = tty->driver_data;
1804
tend = jiffies + timeout;
1806
while (test_bit(ST_TXBUSY, &portp->state)) {
1807
if (signal_pending(current))
1809
msleep_interruptible(20);
1810
if (time_after_eq(jiffies, tend))
1815
/*****************************************************************************/
1817
static void stli_sendxchar(struct tty_struct *tty, char ch)
1819
struct stlibrd *brdp;
1820
struct stliport *portp;
1823
portp = tty->driver_data;
1826
if (portp->brdnr >= stli_nrbrds)
1828
brdp = stli_brds[portp->brdnr];
1832
memset(&actrl, 0, sizeof(asyctrl_t));
1833
if (ch == STOP_CHAR(tty)) {
1834
actrl.rxctrl = CT_STOPFLOW;
1835
} else if (ch == START_CHAR(tty)) {
1836
actrl.rxctrl = CT_STARTFLOW;
1838
actrl.txctrl = CT_SENDCHR;
1841
stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
1844
static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr)
1849
rc = stli_portcmdstats(NULL, portp);
1852
if (test_bit(BST_STARTED, &brdp->state)) {
1853
switch (stli_comstats.hwid) {
1854
case 0: uart = "2681"; break;
1855
case 1: uart = "SC26198"; break;
1856
default:uart = "CD1400"; break;
1859
seq_printf(m, "%d: uart:%s ", portnr, uart);
1861
if (test_bit(BST_STARTED, &brdp->state) && rc >= 0) {
1864
seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal,
1865
(int) stli_comstats.rxtotal);
1867
if (stli_comstats.rxframing)
1868
seq_printf(m, " fe:%d",
1869
(int) stli_comstats.rxframing);
1870
if (stli_comstats.rxparity)
1871
seq_printf(m, " pe:%d",
1872
(int) stli_comstats.rxparity);
1873
if (stli_comstats.rxbreaks)
1874
seq_printf(m, " brk:%d",
1875
(int) stli_comstats.rxbreaks);
1876
if (stli_comstats.rxoverrun)
1877
seq_printf(m, " oe:%d",
1878
(int) stli_comstats.rxoverrun);
1881
if (stli_comstats.signals & TIOCM_RTS) {
1882
seq_printf(m, "%c%s", sep, "RTS");
1885
if (stli_comstats.signals & TIOCM_CTS) {
1886
seq_printf(m, "%c%s", sep, "CTS");
1889
if (stli_comstats.signals & TIOCM_DTR) {
1890
seq_printf(m, "%c%s", sep, "DTR");
1893
if (stli_comstats.signals & TIOCM_CD) {
1894
seq_printf(m, "%c%s", sep, "DCD");
1897
if (stli_comstats.signals & TIOCM_DSR) {
1898
seq_printf(m, "%c%s", sep, "DSR");
1905
/*****************************************************************************/
1908
* Port info, read from the /proc file system.
1911
static int stli_proc_show(struct seq_file *m, void *v)
1913
struct stlibrd *brdp;
1914
struct stliport *portp;
1915
unsigned int brdnr, portnr, totalport;
1919
seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion);
1922
* We scan through for each board, panel and port. The offset is
1923
* calculated on the fly, and irrelevant ports are skipped.
1925
for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
1926
brdp = stli_brds[brdnr];
1929
if (brdp->state == 0)
1932
totalport = brdnr * STL_MAXPORTS;
1933
for (portnr = 0; (portnr < brdp->nrports); portnr++,
1935
portp = brdp->ports[portnr];
1938
stli_portinfo(m, brdp, portp, totalport);
1944
static int stli_proc_open(struct inode *inode, struct file *file)
1946
return single_open(file, stli_proc_show, NULL);
1949
static const struct file_operations stli_proc_fops = {
1950
.owner = THIS_MODULE,
1951
.open = stli_proc_open,
1953
.llseek = seq_lseek,
1954
.release = single_release,
1957
/*****************************************************************************/
1960
* Generic send command routine. This will send a message to the slave,
1961
* of the specified type with the specified argument. Must be very
1962
* careful of data that will be copied out from shared memory -
1963
* containing command results. The command completion is all done from
1964
* a poll routine that does not have user context. Therefore you cannot
1965
* copy back directly into user space, or to the kernel stack of a
1966
* process. This routine does not sleep, so can be called from anywhere.
1968
* The caller must hold the brd_lock (see also stli_sendcmd the usual
1972
static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1974
cdkhdr_t __iomem *hdrp;
1975
cdkctrl_t __iomem *cp;
1976
unsigned char __iomem *bits;
1978
if (test_bit(ST_CMDING, &portp->state)) {
1979
printk(KERN_ERR "istallion: command already busy, cmd=%x!\n",
1985
cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1987
memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
1990
portp->argsize = size;
1993
writel(0, &cp->status);
1994
writel(cmd, &cp->cmd);
1995
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1996
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1998
writeb(readb(bits) | portp->portbit, bits);
1999
set_bit(ST_CMDING, &portp->state);
2003
static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2005
unsigned long flags;
2007
spin_lock_irqsave(&brd_lock, flags);
2008
__stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
2009
spin_unlock_irqrestore(&brd_lock, flags);
2012
/*****************************************************************************/
2015
* Read data from shared memory. This assumes that the shared memory
2016
* is enabled and that interrupts are off. Basically we just empty out
2017
* the shared memory buffer into the tty buffer. Must be careful to
2018
* handle the case where we fill up the tty buffer, but still have
2019
* more chars to unload.
2022
static void stli_read(struct stlibrd *brdp, struct stliport *portp)
2024
cdkasyrq_t __iomem *rp;
2025
char __iomem *shbuf;
2026
struct tty_struct *tty;
2027
unsigned int head, tail, size;
2028
unsigned int len, stlen;
2030
if (test_bit(ST_RXSTOP, &portp->state))
2032
tty = tty_port_tty_get(&portp->port);
2036
rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2037
head = (unsigned int) readw(&rp->head);
2038
if (head != ((unsigned int) readw(&rp->head)))
2039
head = (unsigned int) readw(&rp->head);
2040
tail = (unsigned int) readw(&rp->tail);
2041
size = portp->rxsize;
2046
len = size - (tail - head);
2047
stlen = size - tail;
2050
len = tty_buffer_request_room(tty, len);
2052
shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2055
unsigned char *cptr;
2057
stlen = min(len, stlen);
2058
tty_prepare_flip_string(tty, &cptr, stlen);
2059
memcpy_fromio(cptr, shbuf + tail, stlen);
2067
rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2068
writew(tail, &rp->tail);
2071
set_bit(ST_RXING, &portp->state);
2073
tty_schedule_flip(tty);
2077
/*****************************************************************************/
2080
* Set up and carry out any delayed commands. There is only a small set
2081
* of slave commands that can be done "off-level". So it is not too
2082
* difficult to deal with them here.
2085
static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
2089
if (test_bit(ST_DOSIGS, &portp->state)) {
2090
if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2091
test_bit(ST_DOFLUSHRX, &portp->state))
2092
cmd = A_SETSIGNALSF;
2093
else if (test_bit(ST_DOFLUSHTX, &portp->state))
2094
cmd = A_SETSIGNALSFTX;
2095
else if (test_bit(ST_DOFLUSHRX, &portp->state))
2096
cmd = A_SETSIGNALSFRX;
2099
clear_bit(ST_DOFLUSHTX, &portp->state);
2100
clear_bit(ST_DOFLUSHRX, &portp->state);
2101
clear_bit(ST_DOSIGS, &portp->state);
2102
memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
2104
writel(0, &cp->status);
2105
writel(cmd, &cp->cmd);
2106
set_bit(ST_CMDING, &portp->state);
2107
} else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2108
test_bit(ST_DOFLUSHRX, &portp->state)) {
2109
cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2110
cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2111
clear_bit(ST_DOFLUSHTX, &portp->state);
2112
clear_bit(ST_DOFLUSHRX, &portp->state);
2113
memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2114
writel(0, &cp->status);
2115
writel(A_FLUSH, &cp->cmd);
2116
set_bit(ST_CMDING, &portp->state);
2120
/*****************************************************************************/
2123
* Host command service checking. This handles commands or messages
2124
* coming from the slave to the host. Must have board shared memory
2125
* enabled and interrupts off when called. Notice that by servicing the
2126
* read data last we don't need to change the shared memory pointer
2127
* during processing (which is a slow IO operation).
2128
* Return value indicates if this port is still awaiting actions from
2129
* the slave (like open, command, or even TX data being sent). If 0
2130
* then port is still busy, otherwise no longer busy.
2133
static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
2135
cdkasy_t __iomem *ap;
2136
cdkctrl_t __iomem *cp;
2137
struct tty_struct *tty;
2139
unsigned long oldsigs;
2142
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
2146
* Check if we are waiting for an open completion message.
2148
if (test_bit(ST_OPENING, &portp->state)) {
2149
rc = readl(&cp->openarg);
2150
if (readb(&cp->open) == 0 && rc != 0) {
2153
writel(0, &cp->openarg);
2155
clear_bit(ST_OPENING, &portp->state);
2156
wake_up_interruptible(&portp->raw_wait);
2161
* Check if we are waiting for a close completion message.
2163
if (test_bit(ST_CLOSING, &portp->state)) {
2164
rc = (int) readl(&cp->closearg);
2165
if (readb(&cp->close) == 0 && rc != 0) {
2168
writel(0, &cp->closearg);
2170
clear_bit(ST_CLOSING, &portp->state);
2171
wake_up_interruptible(&portp->raw_wait);
2176
* Check if we are waiting for a command completion message. We may
2177
* need to copy out the command results associated with this command.
2179
if (test_bit(ST_CMDING, &portp->state)) {
2180
rc = readl(&cp->status);
2181
if (readl(&cp->cmd) == 0 && rc != 0) {
2184
if (portp->argp != NULL) {
2185
memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
2189
writel(0, &cp->status);
2191
clear_bit(ST_CMDING, &portp->state);
2192
stli_dodelaycmd(portp, cp);
2193
wake_up_interruptible(&portp->raw_wait);
2198
* Check for any notification messages ready. This includes lots of
2199
* different types of events - RX chars ready, RX break received,
2200
* TX data low or empty in the slave, modem signals changed state.
2207
tty = tty_port_tty_get(&portp->port);
2209
if (nt.signal & SG_DCD) {
2210
oldsigs = portp->sigs;
2211
portp->sigs = stli_mktiocm(nt.sigvalue);
2212
clear_bit(ST_GETSIGS, &portp->state);
2213
if ((portp->sigs & TIOCM_CD) &&
2214
((oldsigs & TIOCM_CD) == 0))
2215
wake_up_interruptible(&portp->port.open_wait);
2216
if ((oldsigs & TIOCM_CD) &&
2217
((portp->sigs & TIOCM_CD) == 0)) {
2218
if (portp->port.flags & ASYNC_CHECK_CD) {
2225
if (nt.data & DT_TXEMPTY)
2226
clear_bit(ST_TXBUSY, &portp->state);
2227
if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2234
if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2236
tty_insert_flip_char(tty, 0, TTY_BREAK);
2237
if (portp->port.flags & ASYNC_SAK) {
2241
tty_schedule_flip(tty);
2246
if (nt.data & DT_RXBUSY) {
2248
stli_read(brdp, portp);
2253
* It might seem odd that we are checking for more RX chars here.
2254
* But, we need to handle the case where the tty buffer was previously
2255
* filled, but we had more characters to pass up. The slave will not
2256
* send any more RX notify messages until the RX buffer has been emptied.
2257
* But it will leave the service bits on (since the buffer is not empty).
2258
* So from here we can try to process more RX chars.
2260
if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2261
clear_bit(ST_RXING, &portp->state);
2262
stli_read(brdp, portp);
2265
return((test_bit(ST_OPENING, &portp->state) ||
2266
test_bit(ST_CLOSING, &portp->state) ||
2267
test_bit(ST_CMDING, &portp->state) ||
2268
test_bit(ST_TXBUSY, &portp->state) ||
2269
test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2272
/*****************************************************************************/
2275
* Service all ports on a particular board. Assumes that the boards
2276
* shared memory is enabled, and that the page pointer is pointed
2277
* at the cdk header structure.
2280
static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
2282
struct stliport *portp;
2283
unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2284
unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2285
unsigned char __iomem *slavep;
2286
int bitpos, bitat, bitsize;
2287
int channr, nrdevs, slavebitchange;
2289
bitsize = brdp->bitsize;
2290
nrdevs = brdp->nrdevs;
2293
* Check if slave wants any service. Basically we try to do as
2294
* little work as possible here. There are 2 levels of service
2295
* bits. So if there is nothing to do we bail early. We check
2296
* 8 service bits at a time in the inner loop, so we can bypass
2297
* the lot if none of them want service.
2299
memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
2302
memset(&slavebits[0], 0, bitsize);
2305
for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2306
if (hostbits[bitpos] == 0)
2308
channr = bitpos * 8;
2309
for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2310
if (hostbits[bitpos] & bitat) {
2311
portp = brdp->ports[(channr - 1)];
2312
if (stli_hostcmd(brdp, portp)) {
2314
slavebits[bitpos] |= bitat;
2321
* If any of the ports are no longer busy then update them in the
2322
* slave request bits. We need to do this after, since a host port
2323
* service may initiate more slave requests.
2325
if (slavebitchange) {
2326
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2327
slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
2328
for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2329
if (readb(slavebits + bitpos))
2330
writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
2335
/*****************************************************************************/
2338
* Driver poll routine. This routine polls the boards in use and passes
2339
* messages back up to host when necessary. This is actually very
2340
* CPU efficient, since we will always have the kernel poll clock, it
2341
* adds only a few cycles when idle (since board service can be
2342
* determined very easily), but when loaded generates no interrupts
2343
* (with their expensive associated context change).
2346
static void stli_poll(unsigned long arg)
2348
cdkhdr_t __iomem *hdrp;
2349
struct stlibrd *brdp;
2352
mod_timer(&stli_timerlist, STLI_TIMEOUT);
2355
* Check each board and do any servicing required.
2357
for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2358
brdp = stli_brds[brdnr];
2361
if (!test_bit(BST_STARTED, &brdp->state))
2364
spin_lock(&brd_lock);
2366
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2367
if (readb(&hdrp->hostreq))
2368
stli_brdpoll(brdp, hdrp);
2370
spin_unlock(&brd_lock);
2374
/*****************************************************************************/
2377
* Translate the termios settings into the port setting structure of
2381
static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp,
2382
asyport_t *pp, struct ktermios *tiosp)
2384
memset(pp, 0, sizeof(asyport_t));
2387
* Start of by setting the baud, char size, parity and stop bit info.
2389
pp->baudout = tty_get_baud_rate(tty);
2390
if ((tiosp->c_cflag & CBAUD) == B38400) {
2391
if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2392
pp->baudout = 57600;
2393
else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2394
pp->baudout = 115200;
2395
else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2396
pp->baudout = 230400;
2397
else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2398
pp->baudout = 460800;
2399
else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
2400
pp->baudout = (portp->baud_base / portp->custom_divisor);
2402
if (pp->baudout > STL_MAXBAUD)
2403
pp->baudout = STL_MAXBAUD;
2404
pp->baudin = pp->baudout;
2406
switch (tiosp->c_cflag & CSIZE) {
2421
if (tiosp->c_cflag & CSTOPB)
2422
pp->stopbs = PT_STOP2;
2424
pp->stopbs = PT_STOP1;
2426
if (tiosp->c_cflag & PARENB) {
2427
if (tiosp->c_cflag & PARODD)
2428
pp->parity = PT_ODDPARITY;
2430
pp->parity = PT_EVENPARITY;
2432
pp->parity = PT_NOPARITY;
2436
* Set up any flow control options enabled.
2438
if (tiosp->c_iflag & IXON) {
2440
if (tiosp->c_iflag & IXANY)
2441
pp->flow |= F_IXANY;
2443
if (tiosp->c_cflag & CRTSCTS)
2444
pp->flow |= (F_RTSFLOW | F_CTSFLOW);
2446
pp->startin = tiosp->c_cc[VSTART];
2447
pp->stopin = tiosp->c_cc[VSTOP];
2448
pp->startout = tiosp->c_cc[VSTART];
2449
pp->stopout = tiosp->c_cc[VSTOP];
2452
* Set up the RX char marking mask with those RX error types we must
2453
* catch. We can get the slave to help us out a little here, it will
2454
* ignore parity errors and breaks for us, and mark parity errors in
2457
if (tiosp->c_iflag & IGNPAR)
2458
pp->iflag |= FI_IGNRXERRS;
2459
if (tiosp->c_iflag & IGNBRK)
2460
pp->iflag |= FI_IGNBREAK;
2462
portp->rxmarkmsk = 0;
2463
if (tiosp->c_iflag & (INPCK | PARMRK))
2464
pp->iflag |= FI_1MARKRXERRS;
2465
if (tiosp->c_iflag & BRKINT)
2466
portp->rxmarkmsk |= BRKINT;
2469
* Set up clocal processing as required.
2471
if (tiosp->c_cflag & CLOCAL)
2472
portp->port.flags &= ~ASYNC_CHECK_CD;
2474
portp->port.flags |= ASYNC_CHECK_CD;
2477
* Transfer any persistent flags into the asyport structure.
2479
pp->pflag = (portp->pflag & 0xffff);
2480
pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
2481
pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
2482
pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
2485
/*****************************************************************************/
2488
* Construct a slave signals structure for setting the DTR and RTS
2489
* signals as specified.
2492
static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
2494
memset(sp, 0, sizeof(asysigs_t));
2496
sp->signal |= SG_DTR;
2497
sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
2500
sp->signal |= SG_RTS;
2501
sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
2505
/*****************************************************************************/
2508
* Convert the signals returned from the slave into a local TIOCM type
2509
* signals value. We keep them locally in TIOCM format.
2512
static long stli_mktiocm(unsigned long sigvalue)
2515
tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
2516
tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
2517
tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
2518
tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
2519
tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
2520
tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
2524
/*****************************************************************************/
2527
* All panels and ports actually attached have been worked out. All
2528
* we need to do here is set up the appropriate per port data structures.
2531
static int stli_initports(struct stlibrd *brdp)
2533
struct stliport *portp;
2534
unsigned int i, panelnr, panelport;
2536
for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2537
portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
2539
printk(KERN_WARNING "istallion: failed to allocate port structure\n");
2542
tty_port_init(&portp->port);
2543
portp->port.ops = &stli_port_ops;
2544
portp->magic = STLI_PORTMAGIC;
2546
portp->brdnr = brdp->brdnr;
2547
portp->panelnr = panelnr;
2548
portp->baud_base = STL_BAUDBASE;
2549
portp->port.close_delay = STL_CLOSEDELAY;
2550
portp->closing_wait = 30 * HZ;
2551
init_waitqueue_head(&portp->port.open_wait);
2552
init_waitqueue_head(&portp->port.close_wait);
2553
init_waitqueue_head(&portp->raw_wait);
2555
if (panelport >= brdp->panels[panelnr]) {
2559
brdp->ports[i] = portp;
2565
/*****************************************************************************/
2568
* All the following routines are board specific hardware operations.
2571
static void stli_ecpinit(struct stlibrd *brdp)
2573
unsigned long memconf;
2575
outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2577
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2580
memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
2581
outb(memconf, (brdp->iobase + ECP_ATMEMAR));
2584
/*****************************************************************************/
2586
static void stli_ecpenable(struct stlibrd *brdp)
2588
outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
2591
/*****************************************************************************/
2593
static void stli_ecpdisable(struct stlibrd *brdp)
2595
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2598
/*****************************************************************************/
2600
static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2605
if (offset > brdp->memsize) {
2606
printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2607
"range at line=%d(%d), brd=%d\n",
2608
(int) offset, line, __LINE__, brdp->brdnr);
2612
ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
2613
val = (unsigned char) (offset / ECP_ATPAGESIZE);
2615
outb(val, (brdp->iobase + ECP_ATMEMPR));
2619
/*****************************************************************************/
2621
static void stli_ecpreset(struct stlibrd *brdp)
2623
outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2625
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2629
/*****************************************************************************/
2631
static void stli_ecpintr(struct stlibrd *brdp)
2633
outb(0x1, brdp->iobase);
2636
/*****************************************************************************/
2639
* The following set of functions act on ECP EISA boards.
2642
static void stli_ecpeiinit(struct stlibrd *brdp)
2644
unsigned long memconf;
2646
outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
2647
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2649
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2652
memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
2653
outb(memconf, (brdp->iobase + ECP_EIMEMARL));
2654
memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
2655
outb(memconf, (brdp->iobase + ECP_EIMEMARH));
2658
/*****************************************************************************/
2660
static void stli_ecpeienable(struct stlibrd *brdp)
2662
outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
2665
/*****************************************************************************/
2667
static void stli_ecpeidisable(struct stlibrd *brdp)
2669
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2672
/*****************************************************************************/
2674
static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2679
if (offset > brdp->memsize) {
2680
printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2681
"range at line=%d(%d), brd=%d\n",
2682
(int) offset, line, __LINE__, brdp->brdnr);
2686
ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
2687
if (offset < ECP_EIPAGESIZE)
2690
val = ECP_EIENABLE | 0x40;
2692
outb(val, (brdp->iobase + ECP_EICONFR));
2696
/*****************************************************************************/
2698
static void stli_ecpeireset(struct stlibrd *brdp)
2700
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2702
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2706
/*****************************************************************************/
2709
* The following set of functions act on ECP MCA boards.
2712
static void stli_ecpmcenable(struct stlibrd *brdp)
2714
outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
2717
/*****************************************************************************/
2719
static void stli_ecpmcdisable(struct stlibrd *brdp)
2721
outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2724
/*****************************************************************************/
2726
static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2731
if (offset > brdp->memsize) {
2732
printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2733
"range at line=%d(%d), brd=%d\n",
2734
(int) offset, line, __LINE__, brdp->brdnr);
2738
ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
2739
val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
2741
outb(val, (brdp->iobase + ECP_MCCONFR));
2745
/*****************************************************************************/
2747
static void stli_ecpmcreset(struct stlibrd *brdp)
2749
outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
2751
outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2755
/*****************************************************************************/
2758
* The following set of functions act on ECP PCI boards.
2761
static void stli_ecppciinit(struct stlibrd *brdp)
2763
outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2765
outb(0, (brdp->iobase + ECP_PCICONFR));
2769
/*****************************************************************************/
2771
static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2776
if (offset > brdp->memsize) {
2777
printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2778
"range at line=%d(%d), board=%d\n",
2779
(int) offset, line, __LINE__, brdp->brdnr);
2783
ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
2784
val = (offset / ECP_PCIPAGESIZE) << 1;
2786
outb(val, (brdp->iobase + ECP_PCICONFR));
2790
/*****************************************************************************/
2792
static void stli_ecppcireset(struct stlibrd *brdp)
2794
outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2796
outb(0, (brdp->iobase + ECP_PCICONFR));
2800
/*****************************************************************************/
2803
* The following routines act on ONboards.
2806
static void stli_onbinit(struct stlibrd *brdp)
2808
unsigned long memconf;
2810
outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2812
outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2815
memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
2816
outb(memconf, (brdp->iobase + ONB_ATMEMAR));
2817
outb(0x1, brdp->iobase);
2821
/*****************************************************************************/
2823
static void stli_onbenable(struct stlibrd *brdp)
2825
outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
2828
/*****************************************************************************/
2830
static void stli_onbdisable(struct stlibrd *brdp)
2832
outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
2835
/*****************************************************************************/
2837
static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2841
if (offset > brdp->memsize) {
2842
printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2843
"range at line=%d(%d), brd=%d\n",
2844
(int) offset, line, __LINE__, brdp->brdnr);
2847
ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
2852
/*****************************************************************************/
2854
static void stli_onbreset(struct stlibrd *brdp)
2856
outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2858
outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2862
/*****************************************************************************/
2865
* The following routines act on ONboard EISA.
2868
static void stli_onbeinit(struct stlibrd *brdp)
2870
unsigned long memconf;
2872
outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
2873
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
2875
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2878
memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
2879
outb(memconf, (brdp->iobase + ONB_EIMEMARL));
2880
memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
2881
outb(memconf, (brdp->iobase + ONB_EIMEMARH));
2882
outb(0x1, brdp->iobase);
2886
/*****************************************************************************/
2888
static void stli_onbeenable(struct stlibrd *brdp)
2890
outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
2893
/*****************************************************************************/
2895
static void stli_onbedisable(struct stlibrd *brdp)
2897
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2900
/*****************************************************************************/
2902
static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2907
if (offset > brdp->memsize) {
2908
printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2909
"range at line=%d(%d), brd=%d\n",
2910
(int) offset, line, __LINE__, brdp->brdnr);
2914
ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
2915
if (offset < ONB_EIPAGESIZE)
2918
val = ONB_EIENABLE | 0x40;
2920
outb(val, (brdp->iobase + ONB_EICONFR));
2924
/*****************************************************************************/
2926
static void stli_onbereset(struct stlibrd *brdp)
2928
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
2930
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2934
/*****************************************************************************/
2937
* The following routines act on Brumby boards.
2940
static void stli_bbyinit(struct stlibrd *brdp)
2942
outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
2944
outb(0, (brdp->iobase + BBY_ATCONFR));
2946
outb(0x1, brdp->iobase);
2950
/*****************************************************************************/
2952
static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2957
BUG_ON(offset > brdp->memsize);
2959
ptr = brdp->membase + (offset % BBY_PAGESIZE);
2960
val = (unsigned char) (offset / BBY_PAGESIZE);
2961
outb(val, (brdp->iobase + BBY_ATCONFR));
2965
/*****************************************************************************/
2967
static void stli_bbyreset(struct stlibrd *brdp)
2969
outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
2971
outb(0, (brdp->iobase + BBY_ATCONFR));
2975
/*****************************************************************************/
2978
* The following routines act on original old Stallion boards.
2981
static void stli_stalinit(struct stlibrd *brdp)
2983
outb(0x1, brdp->iobase);
2987
/*****************************************************************************/
2989
static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2991
BUG_ON(offset > brdp->memsize);
2992
return brdp->membase + (offset % STAL_PAGESIZE);
2995
/*****************************************************************************/
2997
static void stli_stalreset(struct stlibrd *brdp)
3001
vecp = (u32 __iomem *) (brdp->membase + 0x30);
3002
writel(0xffff0000, vecp);
3003
outb(0, brdp->iobase);
3007
/*****************************************************************************/
3010
* Try to find an ECP board and initialize it. This handles only ECP
3014
static int stli_initecp(struct stlibrd *brdp)
3017
cdkecpsig_t __iomem *sigsp;
3018
unsigned int status, nxtid;
3020
int retval, panelnr, nrports;
3022
if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
3027
brdp->iosize = ECP_IOSIZE;
3029
if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3035
* Based on the specific board type setup the common vars to access
3036
* and enable shared memory. Set all board specific information now
3039
switch (brdp->brdtype) {
3041
brdp->memsize = ECP_MEMSIZE;
3042
brdp->pagesize = ECP_ATPAGESIZE;
3043
brdp->init = stli_ecpinit;
3044
brdp->enable = stli_ecpenable;
3045
brdp->reenable = stli_ecpenable;
3046
brdp->disable = stli_ecpdisable;
3047
brdp->getmemptr = stli_ecpgetmemptr;
3048
brdp->intr = stli_ecpintr;
3049
brdp->reset = stli_ecpreset;
3050
name = "serial(EC8/64)";
3054
brdp->memsize = ECP_MEMSIZE;
3055
brdp->pagesize = ECP_EIPAGESIZE;
3056
brdp->init = stli_ecpeiinit;
3057
brdp->enable = stli_ecpeienable;
3058
brdp->reenable = stli_ecpeienable;
3059
brdp->disable = stli_ecpeidisable;
3060
brdp->getmemptr = stli_ecpeigetmemptr;
3061
brdp->intr = stli_ecpintr;
3062
brdp->reset = stli_ecpeireset;
3063
name = "serial(EC8/64-EI)";
3067
brdp->memsize = ECP_MEMSIZE;
3068
brdp->pagesize = ECP_MCPAGESIZE;
3070
brdp->enable = stli_ecpmcenable;
3071
brdp->reenable = stli_ecpmcenable;
3072
brdp->disable = stli_ecpmcdisable;
3073
brdp->getmemptr = stli_ecpmcgetmemptr;
3074
brdp->intr = stli_ecpintr;
3075
brdp->reset = stli_ecpmcreset;
3076
name = "serial(EC8/64-MCA)";
3080
brdp->memsize = ECP_PCIMEMSIZE;
3081
brdp->pagesize = ECP_PCIPAGESIZE;
3082
brdp->init = stli_ecppciinit;
3083
brdp->enable = NULL;
3084
brdp->reenable = NULL;
3085
brdp->disable = NULL;
3086
brdp->getmemptr = stli_ecppcigetmemptr;
3087
brdp->intr = stli_ecpintr;
3088
brdp->reset = stli_ecppcireset;
3089
name = "serial(EC/RA-PCI)";
3098
* The per-board operations structure is all set up, so now let's go
3099
* and get the board operational. Firstly initialize board configuration
3100
* registers. Set the memory mapping info so we can get at the boards
3105
brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3106
if (brdp->membase == NULL) {
3112
* Now that all specific code is set up, enable the shared memory and
3113
* look for the a signature area that will tell us exactly what board
3114
* this is, and what it is connected to it.
3117
sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3118
memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
3121
if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
3127
* Scan through the signature looking at the panels connected to the
3128
* board. Calculate the total number of ports as we go.
3130
for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3131
status = sig.panelid[nxtid];
3132
if ((status & ECH_PNLIDMASK) != nxtid)
3135
brdp->panelids[panelnr] = status;
3136
nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3137
if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3139
brdp->panels[panelnr] = nrports;
3140
brdp->nrports += nrports;
3146
set_bit(BST_FOUND, &brdp->state);
3149
iounmap(brdp->membase);
3150
brdp->membase = NULL;
3152
release_region(brdp->iobase, brdp->iosize);
3157
/*****************************************************************************/
3160
* Try to find an ONboard, Brumby or Stallion board and initialize it.
3161
* This handles only these board types.
3164
static int stli_initonb(struct stlibrd *brdp)
3167
cdkonbsig_t __iomem *sigsp;
3172
* Do a basic sanity check on the IO and memory addresses.
3174
if (brdp->iobase == 0 || brdp->memaddr == 0) {
3179
brdp->iosize = ONB_IOSIZE;
3181
if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3187
* Based on the specific board type setup the common vars to access
3188
* and enable shared memory. Set all board specific information now
3191
switch (brdp->brdtype) {
3194
brdp->memsize = ONB_MEMSIZE;
3195
brdp->pagesize = ONB_ATPAGESIZE;
3196
brdp->init = stli_onbinit;
3197
brdp->enable = stli_onbenable;
3198
brdp->reenable = stli_onbenable;
3199
brdp->disable = stli_onbdisable;
3200
brdp->getmemptr = stli_onbgetmemptr;
3201
brdp->intr = stli_ecpintr;
3202
brdp->reset = stli_onbreset;
3203
if (brdp->memaddr > 0x100000)
3204
brdp->enabval = ONB_MEMENABHI;
3206
brdp->enabval = ONB_MEMENABLO;
3207
name = "serial(ONBoard)";
3211
brdp->memsize = ONB_EIMEMSIZE;
3212
brdp->pagesize = ONB_EIPAGESIZE;
3213
brdp->init = stli_onbeinit;
3214
brdp->enable = stli_onbeenable;
3215
brdp->reenable = stli_onbeenable;
3216
brdp->disable = stli_onbedisable;
3217
brdp->getmemptr = stli_onbegetmemptr;
3218
brdp->intr = stli_ecpintr;
3219
brdp->reset = stli_onbereset;
3220
name = "serial(ONBoard/E)";
3224
brdp->memsize = BBY_MEMSIZE;
3225
brdp->pagesize = BBY_PAGESIZE;
3226
brdp->init = stli_bbyinit;
3227
brdp->enable = NULL;
3228
brdp->reenable = NULL;
3229
brdp->disable = NULL;
3230
brdp->getmemptr = stli_bbygetmemptr;
3231
brdp->intr = stli_ecpintr;
3232
brdp->reset = stli_bbyreset;
3233
name = "serial(Brumby)";
3237
brdp->memsize = STAL_MEMSIZE;
3238
brdp->pagesize = STAL_PAGESIZE;
3239
brdp->init = stli_stalinit;
3240
brdp->enable = NULL;
3241
brdp->reenable = NULL;
3242
brdp->disable = NULL;
3243
brdp->getmemptr = stli_stalgetmemptr;
3244
brdp->intr = stli_ecpintr;
3245
brdp->reset = stli_stalreset;
3246
name = "serial(Stallion)";
3255
* The per-board operations structure is all set up, so now let's go
3256
* and get the board operational. Firstly initialize board configuration
3257
* registers. Set the memory mapping info so we can get at the boards
3262
brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3263
if (brdp->membase == NULL) {
3269
* Now that all specific code is set up, enable the shared memory and
3270
* look for the a signature area that will tell us exactly what board
3271
* this is, and how many ports.
3274
sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3275
memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
3278
if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
3279
sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
3280
sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3281
sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
3287
* Scan through the signature alive mask and calculate how many ports
3288
* there are on this board.
3294
for (i = 0; (i < 16); i++) {
3295
if (((sig.amask0 << i) & 0x8000) == 0)
3300
brdp->panels[0] = brdp->nrports;
3303
set_bit(BST_FOUND, &brdp->state);
3306
iounmap(brdp->membase);
3307
brdp->membase = NULL;
3309
release_region(brdp->iobase, brdp->iosize);
3314
/*****************************************************************************/
3317
* Start up a running board. This routine is only called after the
3318
* code has been down loaded to the board and is operational. It will
3319
* read in the memory map, and get the show on the road...
3322
static int stli_startbrd(struct stlibrd *brdp)
3324
cdkhdr_t __iomem *hdrp;
3325
cdkmem_t __iomem *memp;
3326
cdkasy_t __iomem *ap;
3327
unsigned long flags;
3328
unsigned int portnr, nrdevs, i;
3329
struct stliport *portp;
3333
spin_lock_irqsave(&brd_lock, flags);
3335
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3336
nrdevs = hdrp->nrdevs;
3339
printk("%s(%d): CDK version %d.%d.%d --> "
3340
"nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3341
__FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
3342
readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
3343
readl(&hdrp->slavep));
3346
if (nrdevs < (brdp->nrports + 1)) {
3347
printk(KERN_ERR "istallion: slave failed to allocate memory for "
3348
"all devices, devices=%d\n", nrdevs);
3349
brdp->nrports = nrdevs - 1;
3351
brdp->nrdevs = nrdevs;
3352
brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
3353
brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
3354
brdp->bitsize = (nrdevs + 7) / 8;
3355
memoff = readl(&hdrp->memp);
3356
if (memoff > brdp->memsize) {
3357
printk(KERN_ERR "istallion: corrupted shared memory region?\n");
3359
goto stli_donestartup;
3361
memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
3362
if (readw(&memp->dtype) != TYP_ASYNCTRL) {
3363
printk(KERN_ERR "istallion: no slave control device found\n");
3364
goto stli_donestartup;
3369
* Cycle through memory allocation of each port. We are guaranteed to
3370
* have all ports inside the first page of slave window, so no need to
3371
* change pages while reading memory map.
3373
for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
3374
if (readw(&memp->dtype) != TYP_ASYNC)
3376
portp = brdp->ports[portnr];
3380
portp->addr = readl(&memp->offset);
3381
portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
3382
portp->portidx = (unsigned char) (i / 8);
3383
portp->portbit = (unsigned char) (0x1 << (i % 8));
3386
writeb(0xff, &hdrp->slavereq);
3389
* For each port setup a local copy of the RX and TX buffer offsets
3390
* and sizes. We do this separate from the above, because we need to
3391
* move the shared memory page...
3393
for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
3394
portp = brdp->ports[portnr];
3397
if (portp->addr == 0)
3399
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
3401
portp->rxsize = readw(&ap->rxq.size);
3402
portp->txsize = readw(&ap->txq.size);
3403
portp->rxoffset = readl(&ap->rxq.offset);
3404
portp->txoffset = readl(&ap->txq.offset);
3410
spin_unlock_irqrestore(&brd_lock, flags);
3413
set_bit(BST_STARTED, &brdp->state);
3415
if (! stli_timeron) {
3417
mod_timer(&stli_timerlist, STLI_TIMEOUT);
3423
/*****************************************************************************/
3426
* Probe and initialize the specified board.
3429
static int __devinit stli_brdinit(struct stlibrd *brdp)
3433
switch (brdp->brdtype) {
3438
retval = stli_initecp(brdp);
3445
retval = stli_initonb(brdp);
3448
printk(KERN_ERR "istallion: board=%d is unknown board "
3449
"type=%d\n", brdp->brdnr, brdp->brdtype);
3456
stli_initports(brdp);
3457
printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x "
3458
"nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
3459
brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
3460
brdp->nrpanels, brdp->nrports);
3464
#if STLI_EISAPROBE != 0
3465
/*****************************************************************************/
3468
* Probe around trying to find where the EISA boards shared memory
3469
* might be. This is a bit if hack, but it is the best we can do.
3472
static int stli_eisamemprobe(struct stlibrd *brdp)
3474
cdkecpsig_t ecpsig, __iomem *ecpsigp;
3475
cdkonbsig_t onbsig, __iomem *onbsigp;
3479
* First up we reset the board, to get it into a known state. There
3480
* is only 2 board types here we need to worry about. Don;t use the
3481
* standard board init routine here, it programs up the shared
3482
* memory address, and we don't know it yet...
3484
if (brdp->brdtype == BRD_ECPE) {
3485
outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3486
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3488
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3490
stli_ecpeienable(brdp);
3491
} else if (brdp->brdtype == BRD_ONBOARDE) {
3492
outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3493
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3495
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3497
outb(0x1, brdp->iobase);
3499
stli_onbeenable(brdp);
3505
brdp->memsize = ECP_MEMSIZE;
3508
* Board shared memory is enabled, so now we have a poke around and
3509
* see if we can find it.
3511
for (i = 0; (i < stli_eisamempsize); i++) {
3512
brdp->memaddr = stli_eisamemprobeaddrs[i];
3513
brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3514
if (brdp->membase == NULL)
3517
if (brdp->brdtype == BRD_ECPE) {
3518
ecpsigp = stli_ecpeigetmemptr(brdp,
3519
CDK_SIGADDR, __LINE__);
3520
memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
3521
if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
3524
onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
3525
CDK_SIGADDR, __LINE__);
3526
memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
3527
if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
3528
(onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
3529
(onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
3530
(onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
3534
iounmap(brdp->membase);
3540
* Regardless of whether we found the shared memory or not we must
3541
* disable the region. After that return success or failure.
3543
if (brdp->brdtype == BRD_ECPE)
3544
stli_ecpeidisable(brdp);
3546
stli_onbedisable(brdp);
3550
brdp->membase = NULL;
3551
printk(KERN_ERR "istallion: failed to probe shared memory "
3552
"region for %s in EISA slot=%d\n",
3553
stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
3560
static int stli_getbrdnr(void)
3564
for (i = 0; i < STL_MAXBRDS; i++) {
3565
if (!stli_brds[i]) {
3566
if (i >= stli_nrbrds)
3567
stli_nrbrds = i + 1;
3574
#if STLI_EISAPROBE != 0
3575
/*****************************************************************************/
3578
* Probe around and try to find any EISA boards in system. The biggest
3579
* problem here is finding out what memory address is associated with
3580
* an EISA board after it is found. The registers of the ECPE and
3581
* ONboardE are not readable - so we can't read them from there. We
3582
* don't have access to the EISA CMOS (or EISA BIOS) so we don't
3583
* actually have any way to find out the real value. The best we can
3584
* do is go probing around in the usual places hoping we can find it.
3587
static int __init stli_findeisabrds(void)
3589
struct stlibrd *brdp;
3590
unsigned int iobase, eid, i;
3591
int brdnr, found = 0;
3594
* Firstly check if this is an EISA system. If this is not an EISA system then
3595
* don't bother going any further!
3601
* Looks like an EISA system, so go searching for EISA boards.
3603
for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
3604
outb(0xff, (iobase + 0xc80));
3605
eid = inb(iobase + 0xc80);
3606
eid |= inb(iobase + 0xc81) << 8;
3607
if (eid != STL_EISAID)
3611
* We have found a board. Need to check if this board was
3612
* statically configured already (just in case!).
3614
for (i = 0; (i < STL_MAXBRDS); i++) {
3615
brdp = stli_brds[i];
3618
if (brdp->iobase == iobase)
3621
if (i < STL_MAXBRDS)
3625
* We have found a Stallion board and it is not configured already.
3626
* Allocate a board structure and initialize it.
3628
if ((brdp = stli_allocbrd()) == NULL)
3629
return found ? : -ENOMEM;
3630
brdnr = stli_getbrdnr();
3632
return found ? : -ENOMEM;
3633
brdp->brdnr = (unsigned int)brdnr;
3634
eid = inb(iobase + 0xc82);
3635
if (eid == ECP_EISAID)
3636
brdp->brdtype = BRD_ECPE;
3637
else if (eid == ONB_EISAID)
3638
brdp->brdtype = BRD_ONBOARDE;
3640
brdp->brdtype = BRD_UNKNOWN;
3641
brdp->iobase = iobase;
3642
outb(0x1, (iobase + 0xc84));
3643
if (stli_eisamemprobe(brdp))
3644
outb(0, (iobase + 0xc84));
3645
if (stli_brdinit(brdp) < 0) {
3650
stli_brds[brdp->brdnr] = brdp;
3653
for (i = 0; i < brdp->nrports; i++)
3654
tty_register_device(stli_serial,
3655
brdp->brdnr * STL_MAXPORTS + i, NULL);
3661
static inline int stli_findeisabrds(void) { return 0; }
3664
/*****************************************************************************/
3667
* Find the next available board number that is free.
3670
/*****************************************************************************/
3673
* We have a Stallion board. Allocate a board structure and
3674
* initialize it. Read its IO and MEMORY resources from PCI
3675
* configuration space.
3678
static int __devinit stli_pciprobe(struct pci_dev *pdev,
3679
const struct pci_device_id *ent)
3681
struct stlibrd *brdp;
3683
int brdnr, retval = -EIO;
3685
retval = pci_enable_device(pdev);
3688
brdp = stli_allocbrd();
3693
mutex_lock(&stli_brdslock);
3694
brdnr = stli_getbrdnr();
3696
printk(KERN_INFO "istallion: too many boards found, "
3697
"maximum supported %d\n", STL_MAXBRDS);
3698
mutex_unlock(&stli_brdslock);
3702
brdp->brdnr = (unsigned int)brdnr;
3703
stli_brds[brdp->brdnr] = brdp;
3704
mutex_unlock(&stli_brdslock);
3705
brdp->brdtype = BRD_ECPPCI;
3707
* We have all resources from the board, so lets setup the actual
3708
* board structure now.
3710
brdp->iobase = pci_resource_start(pdev, 3);
3711
brdp->memaddr = pci_resource_start(pdev, 2);
3712
retval = stli_brdinit(brdp);
3716
set_bit(BST_PROBED, &brdp->state);
3717
pci_set_drvdata(pdev, brdp);
3720
brdp->enable = NULL;
3721
brdp->disable = NULL;
3723
for (i = 0; i < brdp->nrports; i++)
3724
tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i,
3729
stli_brds[brdp->brdnr] = NULL;
3736
static void __devexit stli_pciremove(struct pci_dev *pdev)
3738
struct stlibrd *brdp = pci_get_drvdata(pdev);
3740
stli_cleanup_ports(brdp);
3742
iounmap(brdp->membase);
3743
if (brdp->iosize > 0)
3744
release_region(brdp->iobase, brdp->iosize);
3746
stli_brds[brdp->brdnr] = NULL;
3750
static struct pci_driver stli_pcidriver = {
3751
.name = "istallion",
3752
.id_table = istallion_pci_tbl,
3753
.probe = stli_pciprobe,
3754
.remove = __devexit_p(stli_pciremove)
3756
/*****************************************************************************/
3759
* Allocate a new board structure. Fill out the basic info in it.
3762
static struct stlibrd *stli_allocbrd(void)
3764
struct stlibrd *brdp;
3766
brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
3768
printk(KERN_ERR "istallion: failed to allocate memory "
3769
"(size=%Zd)\n", sizeof(struct stlibrd));
3772
brdp->magic = STLI_BOARDMAGIC;
3776
/*****************************************************************************/
3779
* Scan through all the boards in the configuration and see what we
3783
static int __init stli_initbrds(void)
3785
struct stlibrd *brdp, *nxtbrdp;
3786
struct stlconf conf;
3787
unsigned int i, j, found = 0;
3790
for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
3792
memset(&conf, 0, sizeof(conf));
3793
if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
3795
if ((brdp = stli_allocbrd()) == NULL)
3797
brdp->brdnr = stli_nrbrds;
3798
brdp->brdtype = conf.brdtype;
3799
brdp->iobase = conf.ioaddr1;
3800
brdp->memaddr = conf.memaddr;
3801
if (stli_brdinit(brdp) < 0) {
3805
stli_brds[brdp->brdnr] = brdp;
3808
for (i = 0; i < brdp->nrports; i++)
3809
tty_register_device(stli_serial,
3810
brdp->brdnr * STL_MAXPORTS + i, NULL);
3813
retval = stli_findeisabrds();
3818
* All found boards are initialized. Now for a little optimization, if
3819
* no boards are sharing the "shared memory" regions then we can just
3820
* leave them all enabled. This is in fact the usual case.
3823
if (stli_nrbrds > 1) {
3824
for (i = 0; (i < stli_nrbrds); i++) {
3825
brdp = stli_brds[i];
3828
for (j = i + 1; (j < stli_nrbrds); j++) {
3829
nxtbrdp = stli_brds[j];
3830
if (nxtbrdp == NULL)
3832
if ((brdp->membase >= nxtbrdp->membase) &&
3833
(brdp->membase <= (nxtbrdp->membase +
3834
nxtbrdp->memsize - 1))) {
3842
if (stli_shared == 0) {
3843
for (i = 0; (i < stli_nrbrds); i++) {
3844
brdp = stli_brds[i];
3847
if (test_bit(BST_FOUND, &brdp->state)) {
3849
brdp->enable = NULL;
3850
brdp->disable = NULL;
3855
retval = pci_register_driver(&stli_pcidriver);
3856
if (retval && found == 0) {
3857
printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
3858
"driver can be registered!\n");
3867
/*****************************************************************************/
3870
* Code to handle an "staliomem" read operation. This device is the
3871
* contents of the board shared memory. It is used for down loading
3872
* the slave image (and debugging :-)
3875
static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
3877
unsigned long flags;
3878
void __iomem *memptr;
3879
struct stlibrd *brdp;
3885
brdnr = iminor(fp->f_path.dentry->d_inode);
3886
if (brdnr >= stli_nrbrds)
3888
brdp = stli_brds[brdnr];
3891
if (brdp->state == 0)
3893
if (off >= brdp->memsize || off + count < off)
3896
size = min(count, (size_t)(brdp->memsize - off));
3899
* Copy the data a page at a time
3902
p = (void *)__get_free_page(GFP_KERNEL);
3907
spin_lock_irqsave(&brd_lock, flags);
3909
memptr = EBRDGETMEMPTR(brdp, off);
3910
n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
3911
n = min(n, (int)PAGE_SIZE);
3912
memcpy_fromio(p, memptr, n);
3914
spin_unlock_irqrestore(&brd_lock, flags);
3915
if (copy_to_user(buf, p, n)) {
3925
free_page((unsigned long)p);
3929
/*****************************************************************************/
3932
* Code to handle an "staliomem" write operation. This device is the
3933
* contents of the board shared memory. It is used for down loading
3934
* the slave image (and debugging :-)
3936
* FIXME: copy under lock
3939
static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
3941
unsigned long flags;
3942
void __iomem *memptr;
3943
struct stlibrd *brdp;
3950
brdnr = iminor(fp->f_path.dentry->d_inode);
3952
if (brdnr >= stli_nrbrds)
3954
brdp = stli_brds[brdnr];
3957
if (brdp->state == 0)
3959
if (off >= brdp->memsize || off + count < off)
3962
chbuf = (char __user *) buf;
3963
size = min(count, (size_t)(brdp->memsize - off));
3966
* Copy the data a page at a time
3969
p = (void *)__get_free_page(GFP_KERNEL);
3974
n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
3975
n = min(n, (int)PAGE_SIZE);
3976
if (copy_from_user(p, chbuf, n)) {
3981
spin_lock_irqsave(&brd_lock, flags);
3983
memptr = EBRDGETMEMPTR(brdp, off);
3984
memcpy_toio(memptr, p, n);
3986
spin_unlock_irqrestore(&brd_lock, flags);
3992
free_page((unsigned long) p);
3997
/*****************************************************************************/
4000
* Return the board stats structure to user app.
4003
static int stli_getbrdstats(combrd_t __user *bp)
4005
struct stlibrd *brdp;
4007
combrd_t stli_brdstats;
4009
if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4011
if (stli_brdstats.brd >= STL_MAXBRDS)
4013
brdp = stli_brds[stli_brdstats.brd];
4017
memset(&stli_brdstats, 0, sizeof(combrd_t));
4019
stli_brdstats.brd = brdp->brdnr;
4020
stli_brdstats.type = brdp->brdtype;
4021
stli_brdstats.hwid = 0;
4022
stli_brdstats.state = brdp->state;
4023
stli_brdstats.ioaddr = brdp->iobase;
4024
stli_brdstats.memaddr = brdp->memaddr;
4025
stli_brdstats.nrpanels = brdp->nrpanels;
4026
stli_brdstats.nrports = brdp->nrports;
4027
for (i = 0; (i < brdp->nrpanels); i++) {
4028
stli_brdstats.panels[i].panel = i;
4029
stli_brdstats.panels[i].hwid = brdp->panelids[i];
4030
stli_brdstats.panels[i].nrports = brdp->panels[i];
4033
if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4038
/*****************************************************************************/
4041
* Resolve the referenced port number into a port struct pointer.
4044
static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
4045
unsigned int portnr)
4047
struct stlibrd *brdp;
4050
if (brdnr >= STL_MAXBRDS)
4052
brdp = stli_brds[brdnr];
4055
for (i = 0; (i < panelnr); i++)
4056
portnr += brdp->panels[i];
4057
if (portnr >= brdp->nrports)
4059
return brdp->ports[portnr];
4062
/*****************************************************************************/
4065
* Return the port stats structure to user app. A NULL port struct
4066
* pointer passed in means that we need to find out from the app
4067
* what port to get stats for (used through board control device).
4070
static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp)
4072
unsigned long flags;
4073
struct stlibrd *brdp;
4076
memset(&stli_comstats, 0, sizeof(comstats_t));
4080
brdp = stli_brds[portp->brdnr];
4084
mutex_lock(&portp->port.mutex);
4085
if (test_bit(BST_STARTED, &brdp->state)) {
4086
if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4087
&stli_cdkstats, sizeof(asystats_t), 1)) < 0) {
4088
mutex_unlock(&portp->port.mutex);
4092
memset(&stli_cdkstats, 0, sizeof(asystats_t));
4095
stli_comstats.brd = portp->brdnr;
4096
stli_comstats.panel = portp->panelnr;
4097
stli_comstats.port = portp->portnr;
4098
stli_comstats.state = portp->state;
4099
stli_comstats.flags = portp->port.flags;
4101
spin_lock_irqsave(&brd_lock, flags);
4103
if (portp->port.tty == tty) {
4104
stli_comstats.ttystate = tty->flags;
4105
stli_comstats.rxbuffered = -1;
4106
if (tty->termios != NULL) {
4107
stli_comstats.cflags = tty->termios->c_cflag;
4108
stli_comstats.iflags = tty->termios->c_iflag;
4109
stli_comstats.oflags = tty->termios->c_oflag;
4110
stli_comstats.lflags = tty->termios->c_lflag;
4114
spin_unlock_irqrestore(&brd_lock, flags);
4116
stli_comstats.txtotal = stli_cdkstats.txchars;
4117
stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4118
stli_comstats.txbuffered = stli_cdkstats.txringq;
4119
stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4120
stli_comstats.rxoverrun = stli_cdkstats.overruns;
4121
stli_comstats.rxparity = stli_cdkstats.parity;
4122
stli_comstats.rxframing = stli_cdkstats.framing;
4123
stli_comstats.rxlost = stli_cdkstats.ringover;
4124
stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4125
stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4126
stli_comstats.txxon = stli_cdkstats.txstart;
4127
stli_comstats.txxoff = stli_cdkstats.txstop;
4128
stli_comstats.rxxon = stli_cdkstats.rxstart;
4129
stli_comstats.rxxoff = stli_cdkstats.rxstop;
4130
stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4131
stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4132
stli_comstats.modem = stli_cdkstats.dcdcnt;
4133
stli_comstats.hwid = stli_cdkstats.hwid;
4134
stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4135
mutex_unlock(&portp->port.mutex);
4140
/*****************************************************************************/
4143
* Return the port stats structure to user app. A NULL port struct
4144
* pointer passed in means that we need to find out from the app
4145
* what port to get stats for (used through board control device).
4148
static int stli_getportstats(struct tty_struct *tty, struct stliport *portp,
4149
comstats_t __user *cp)
4151
struct stlibrd *brdp;
4155
if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4157
portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4158
stli_comstats.port);
4163
brdp = stli_brds[portp->brdnr];
4167
if ((rc = stli_portcmdstats(tty, portp)) < 0)
4170
return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4174
/*****************************************************************************/
4177
* Clear the port stats structure. We also return it zeroed out...
4180
static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
4182
struct stlibrd *brdp;
4186
if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4188
portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4189
stli_comstats.port);
4194
brdp = stli_brds[portp->brdnr];
4198
mutex_lock(&portp->port.mutex);
4200
if (test_bit(BST_STARTED, &brdp->state)) {
4201
if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) {
4202
mutex_unlock(&portp->port.mutex);
4207
memset(&stli_comstats, 0, sizeof(comstats_t));
4208
stli_comstats.brd = portp->brdnr;
4209
stli_comstats.panel = portp->panelnr;
4210
stli_comstats.port = portp->portnr;
4211
mutex_unlock(&portp->port.mutex);
4213
if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
4218
/*****************************************************************************/
4221
* Return the entire driver ports structure to a user app.
4224
static int stli_getportstruct(struct stliport __user *arg)
4226
struct stliport stli_dummyport;
4227
struct stliport *portp;
4229
if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
4231
portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
4232
stli_dummyport.portnr);
4235
if (copy_to_user(arg, portp, sizeof(struct stliport)))
4240
/*****************************************************************************/
4243
* Return the entire driver board structure to a user app.
4246
static int stli_getbrdstruct(struct stlibrd __user *arg)
4248
struct stlibrd stli_dummybrd;
4249
struct stlibrd *brdp;
4251
if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
4253
if (stli_dummybrd.brdnr >= STL_MAXBRDS)
4255
brdp = stli_brds[stli_dummybrd.brdnr];
4258
if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
4263
/*****************************************************************************/
4266
* The "staliomem" device is also required to do some special operations on
4267
* the board. We need to be able to send an interrupt to the board,
4268
* reset it, and start/stop it.
4271
static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg)
4273
struct stlibrd *brdp;
4274
int brdnr, rc, done;
4275
void __user *argp = (void __user *)arg;
4278
* First up handle the board independent ioctls.
4284
case COM_GETPORTSTATS:
4285
rc = stli_getportstats(NULL, NULL, argp);
4288
case COM_CLRPORTSTATS:
4289
rc = stli_clrportstats(NULL, argp);
4292
case COM_GETBRDSTATS:
4293
rc = stli_getbrdstats(argp);
4297
rc = stli_getportstruct(argp);
4301
rc = stli_getbrdstruct(argp);
4309
* Now handle the board specific ioctls. These all depend on the
4310
* minor number of the device they were called from.
4312
brdnr = iminor(fp->f_dentry->d_inode);
4313
if (brdnr >= STL_MAXBRDS)
4315
brdp = stli_brds[brdnr];
4318
if (brdp->state == 0)
4326
rc = stli_startbrd(brdp);
4329
clear_bit(BST_STARTED, &brdp->state);
4332
clear_bit(BST_STARTED, &brdp->state);
4334
if (stli_shared == 0) {
4335
if (brdp->reenable != NULL)
4336
(* brdp->reenable)(brdp);
4346
static const struct tty_operations stli_ops = {
4348
.close = stli_close,
4349
.write = stli_write,
4350
.put_char = stli_putchar,
4351
.flush_chars = stli_flushchars,
4352
.write_room = stli_writeroom,
4353
.chars_in_buffer = stli_charsinbuffer,
4354
.ioctl = stli_ioctl,
4355
.set_termios = stli_settermios,
4356
.throttle = stli_throttle,
4357
.unthrottle = stli_unthrottle,
4359
.start = stli_start,
4360
.hangup = stli_hangup,
4361
.flush_buffer = stli_flushbuffer,
4362
.break_ctl = stli_breakctl,
4363
.wait_until_sent = stli_waituntilsent,
4364
.send_xchar = stli_sendxchar,
4365
.tiocmget = stli_tiocmget,
4366
.tiocmset = stli_tiocmset,
4367
.proc_fops = &stli_proc_fops,
4370
static const struct tty_port_operations stli_port_ops = {
4371
.carrier_raised = stli_carrier_raised,
4372
.dtr_rts = stli_dtr_rts,
4373
.activate = stli_activate,
4374
.shutdown = stli_shutdown,
4377
/*****************************************************************************/
4379
* Loadable module initialization stuff.
4382
static void istallion_cleanup_isa(void)
4384
struct stlibrd *brdp;
4387
for (j = 0; (j < stli_nrbrds); j++) {
4388
if ((brdp = stli_brds[j]) == NULL ||
4389
test_bit(BST_PROBED, &brdp->state))
4392
stli_cleanup_ports(brdp);
4394
iounmap(brdp->membase);
4395
if (brdp->iosize > 0)
4396
release_region(brdp->iobase, brdp->iosize);
4398
stli_brds[j] = NULL;
4402
static int __init istallion_module_init(void)
4407
printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
4409
spin_lock_init(&stli_lock);
4410
spin_lock_init(&brd_lock);
4412
stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4413
if (!stli_txcookbuf) {
4414
printk(KERN_ERR "istallion: failed to allocate memory "
4415
"(size=%d)\n", STLI_TXBUFSIZE);
4420
stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
4426
stli_serial->owner = THIS_MODULE;
4427
stli_serial->driver_name = stli_drvname;
4428
stli_serial->name = stli_serialname;
4429
stli_serial->major = STL_SERIALMAJOR;
4430
stli_serial->minor_start = 0;
4431
stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
4432
stli_serial->subtype = SERIAL_TYPE_NORMAL;
4433
stli_serial->init_termios = stli_deftermios;
4434
stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
4435
tty_set_operations(stli_serial, &stli_ops);
4437
retval = tty_register_driver(stli_serial);
4439
printk(KERN_ERR "istallion: failed to register serial driver\n");
4443
retval = stli_initbrds();
4448
* Set up a character driver for the shared memory region. We need this
4449
* to down load the slave code image. Also it is a useful debugging tool.
4451
retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
4453
printk(KERN_ERR "istallion: failed to register serial memory "
4458
istallion_class = class_create(THIS_MODULE, "staliomem");
4459
for (i = 0; i < 4; i++)
4460
device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
4461
NULL, "staliomem%d", i);
4465
pci_unregister_driver(&stli_pcidriver);
4466
istallion_cleanup_isa();
4468
tty_unregister_driver(stli_serial);
4470
put_tty_driver(stli_serial);
4472
kfree(stli_txcookbuf);
4477
/*****************************************************************************/
4479
static void __exit istallion_module_exit(void)
4483
printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
4488
del_timer_sync(&stli_timerlist);
4491
unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
4493
for (j = 0; j < 4; j++)
4494
device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j));
4495
class_destroy(istallion_class);
4497
pci_unregister_driver(&stli_pcidriver);
4498
istallion_cleanup_isa();
4500
tty_unregister_driver(stli_serial);
4501
put_tty_driver(stli_serial);
4503
kfree(stli_txcookbuf);
4506
module_init(istallion_module_init);
4507
module_exit(istallion_module_exit);
added
removed
drivers/staging/tty/istallion.c
