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Diffstat (limited to 'drivers/char/istallion.c')
| -rw-r--r-- | drivers/char/istallion.c | 5276 |
1 files changed, 0 insertions, 5276 deletions
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c deleted file mode 100644 index e3ddbdb85a2..00000000000 --- a/drivers/char/istallion.c +++ /dev/null @@ -1,5276 +0,0 @@ -/*****************************************************************************/ - -/* - * istallion.c -- stallion intelligent multiport serial driver. - * - * Copyright (C) 1996-1999 Stallion Technologies - * Copyright (C) 1994-1996 Greg Ungerer. - * - * This code is loosely based on the Linux serial driver, written by - * Linus Torvalds, Theodore T'so and others. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -/*****************************************************************************/ - -#include <linux/config.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/serial.h> -#include <linux/cdk.h> -#include <linux/comstats.h> -#include <linux/istallion.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/devfs_fs_kernel.h> -#include <linux/device.h> -#include <linux/wait.h> - -#include <asm/io.h> -#include <asm/uaccess.h> - -#ifdef CONFIG_PCI -#include <linux/pci.h> -#endif - -/*****************************************************************************/ - -/* - * Define different board types. Not all of the following board types - * are supported by this driver. But I will use the standard "assigned" - * board numbers. Currently supported boards are abbreviated as: - * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and - * STAL = Stallion. - */ -#define BRD_UNKNOWN 0 -#define BRD_STALLION 1 -#define BRD_BRUMBY4 2 -#define BRD_ONBOARD2 3 -#define BRD_ONBOARD 4 -#define BRD_BRUMBY8 5 -#define BRD_BRUMBY16 6 -#define BRD_ONBOARDE 7 -#define BRD_ONBOARD32 9 -#define BRD_ONBOARD2_32 10 -#define BRD_ONBOARDRS 11 -#define BRD_EASYIO 20 -#define BRD_ECH 21 -#define BRD_ECHMC 22 -#define BRD_ECP 23 -#define BRD_ECPE 24 -#define BRD_ECPMC 25 -#define BRD_ECHPCI 26 -#define BRD_ECH64PCI 27 -#define BRD_EASYIOPCI 28 -#define BRD_ECPPCI 29 - -#define BRD_BRUMBY BRD_BRUMBY4 - -/* - * Define a configuration structure to hold the board configuration. - * Need to set this up in the code (for now) with the boards that are - * to be configured into the system. This is what needs to be modified - * when adding/removing/modifying boards. Each line entry in the - * stli_brdconf[] array is a board. Each line contains io/irq/memory - * ranges for that board (as well as what type of board it is). - * Some examples: - * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, - * This line will configure an EasyConnection 8/64 at io address 2a0, - * and shared memory address of cc000. Multiple EasyConnection 8/64 - * boards can share the same shared memory address space. No interrupt - * is required for this board type. - * Another example: - * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, - * This line will configure an EasyConnection 8/64 EISA in slot 5 and - * shared memory address of 0x80000000 (2 GByte). Multiple - * EasyConnection 8/64 EISA boards can share the same shared memory - * address space. No interrupt is required for this board type. - * Another example: - * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, - * This line will configure an ONboard (ISA type) at io address 240, - * and shared memory address of d0000. Multiple ONboards can share - * the same shared memory address space. No interrupt required. - * Another example: - * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, - * This line will configure a Brumby board (any number of ports!) at - * io address 360 and shared memory address of c8000. All Brumby boards - * configured into a system must have their own separate io and memory - * addresses. No interrupt is required. - * Another example: - * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, - * This line will configure an original Stallion board at io address 330 - * and shared memory address d0000 (this would only be valid for a "V4.0" - * or Rev.O Stallion board). All Stallion boards configured into the - * system must have their own separate io and memory addresses. No - * interrupt is required. - */ - -typedef struct { - int brdtype; - int ioaddr1; - int ioaddr2; - unsigned long memaddr; - int irq; - int irqtype; -} stlconf_t; - -static stlconf_t stli_brdconf[] = { - /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/ -}; - -static int stli_nrbrds = sizeof(stli_brdconf) / sizeof(stlconf_t); - -/* - * There is some experimental EISA board detection code in this driver. - * By default it is disabled, but for those that want to try it out, - * then set the define below to be 1. - */ -#define STLI_EISAPROBE 0 - -/*****************************************************************************/ - -/* - * Define some important driver characteristics. Device major numbers - * allocated as per Linux Device Registry. - */ -#ifndef STL_SIOMEMMAJOR -#define STL_SIOMEMMAJOR 28 -#endif -#ifndef STL_SERIALMAJOR -#define STL_SERIALMAJOR 24 -#endif -#ifndef STL_CALLOUTMAJOR -#define STL_CALLOUTMAJOR 25 -#endif - -/*****************************************************************************/ - -/* - * Define our local driver identity first. Set up stuff to deal with - * all the local structures required by a serial tty driver. - */ -static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; -static char *stli_drvname = "istallion"; -static char *stli_drvversion = "5.6.0"; -static char *stli_serialname = "ttyE"; - -static struct tty_driver *stli_serial; - -/* - * We will need to allocate a temporary write buffer for chars that - * come direct from user space. The problem is that a copy from user - * space might cause a page fault (typically on a system that is - * swapping!). All ports will share one buffer - since if the system - * is already swapping a shared buffer won't make things any worse. - */ -static char *stli_tmpwritebuf; -static DECLARE_MUTEX(stli_tmpwritesem); - -#define STLI_TXBUFSIZE 4096 - -/* - * Use a fast local buffer for cooked characters. Typically a whole - * bunch of cooked characters come in for a port, 1 at a time. So we - * save those up into a local buffer, then write out the whole lot - * with a large memcpy. Just use 1 buffer for all ports, since its - * use it is only need for short periods of time by each port. - */ -static char *stli_txcookbuf; -static int stli_txcooksize; -static int stli_txcookrealsize; -static struct tty_struct *stli_txcooktty; - -/* - * Define a local default termios struct. All ports will be created - * with this termios initially. Basically all it defines is a raw port - * at 9600 baud, 8 data bits, no parity, 1 stop bit. - */ -static struct termios stli_deftermios = { - .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), - .c_cc = INIT_C_CC, -}; - -/* - * Define global stats structures. Not used often, and can be - * re-used for each stats call. - */ -static comstats_t stli_comstats; -static combrd_t stli_brdstats; -static asystats_t stli_cdkstats; -static stlibrd_t stli_dummybrd; -static stliport_t stli_dummyport; - -/*****************************************************************************/ - -static stlibrd_t *stli_brds[STL_MAXBRDS]; - -static int stli_shared; - -/* - * Per board state flags. Used with the state field of the board struct. - * Not really much here... All we need to do is keep track of whether - * the board has been detected, and whether it is actually running a slave - * or not. - */ -#define BST_FOUND 0x1 -#define BST_STARTED 0x2 - -/* - * Define the set of port state flags. These are marked for internal - * state purposes only, usually to do with the state of communications - * with the slave. Most of them need to be updated atomically, so always - * use the bit setting operations (unless protected by cli/sti). - */ -#define ST_INITIALIZING 1 -#define ST_OPENING 2 -#define ST_CLOSING 3 -#define ST_CMDING 4 -#define ST_TXBUSY 5 -#define ST_RXING 6 -#define ST_DOFLUSHRX 7 -#define ST_DOFLUSHTX 8 -#define ST_DOSIGS 9 -#define ST_RXSTOP 10 -#define ST_GETSIGS 11 - -/* - * Define an array of board names as printable strings. Handy for - * referencing boards when printing trace and stuff. - */ -static char *stli_brdnames[] = { - "Unknown", - "Stallion", - "Brumby", - "ONboard-MC", - "ONboard", - "Brumby", - "Brumby", - "ONboard-EI", - (char *) NULL, - "ONboard", - "ONboard-MC", - "ONboard-MC", - (char *) NULL, - (char *) NULL, - (char *) NULL, - (char *) NULL, - (char *) NULL, - (char *) NULL, - (char *) NULL, - (char *) NULL, - "EasyIO", - "EC8/32-AT", - "EC8/32-MC", - "EC8/64-AT", - "EC8/64-EI", - "EC8/64-MC", - "EC8/32-PCI", - "EC8/64-PCI", - "EasyIO-PCI", - "EC/RA-PCI", -}; - -/*****************************************************************************/ - -#ifdef MODULE -/* - * Define some string labels for arguments passed from the module - * load line. These allow for easy board definitions, and easy - * modification of the io, memory and irq resoucres. - */ - -static char *board0[8]; -static char *board1[8]; -static char *board2[8]; -static char *board3[8]; - -static char **stli_brdsp[] = { - (char **) &board0, - (char **) &board1, - (char **) &board2, - (char **) &board3 -}; - -/* - * Define a set of common board names, and types. This is used to - * parse any module arguments. - */ - -typedef struct stlibrdtype { - char *name; - int type; -} stlibrdtype_t; - -static stlibrdtype_t stli_brdstr[] = { - { "stallion", BRD_STALLION }, - { "1", BRD_STALLION }, - { "brumby", BRD_BRUMBY }, - { "brumby4", BRD_BRUMBY }, - { "brumby/4", BRD_BRUMBY }, - { "brumby-4", BRD_BRUMBY }, - { "brumby8", BRD_BRUMBY }, - { "brumby/8", BRD_BRUMBY }, - { "brumby-8", BRD_BRUMBY }, - { "brumby16", BRD_BRUMBY }, - { "brumby/16", BRD_BRUMBY }, - { "brumby-16", BRD_BRUMBY }, - { "2", BRD_BRUMBY }, - { "onboard2", BRD_ONBOARD2 }, - { "onboard-2", BRD_ONBOARD2 }, - { "onboard/2", BRD_ONBOARD2 }, - { "onboard-mc", BRD_ONBOARD2 }, - { "onboard/mc", BRD_ONBOARD2 }, - { "onboard-mca", BRD_ONBOARD2 }, - { "onboard/mca", BRD_ONBOARD2 }, - { "3", BRD_ONBOARD2 }, - { "onboard", BRD_ONBOARD }, - { "onboardat", BRD_ONBOARD }, - { "4", BRD_ONBOARD }, - { "onboarde", BRD_ONBOARDE }, - { "onboard-e", BRD_ONBOARDE }, - { "onboard/e", BRD_ONBOARDE }, - { "onboard-ei", BRD_ONBOARDE }, - { "onboard/ei", BRD_ONBOARDE }, - { "7", BRD_ONBOARDE }, - { "ecp", BRD_ECP }, - { "ecpat", BRD_ECP }, - { "ec8/64", BRD_ECP }, - { "ec8/64-at", BRD_ECP }, - { "ec8/64-isa", BRD_ECP }, - { "23", BRD_ECP }, - { "ecpe", BRD_ECPE }, - { "ecpei", BRD_ECPE }, - { "ec8/64-e", BRD_ECPE }, - { "ec8/64-ei", BRD_ECPE }, - { "24", BRD_ECPE }, - { "ecpmc", BRD_ECPMC }, - { "ec8/64-mc", BRD_ECPMC }, - { "ec8/64-mca", BRD_ECPMC }, - { "25", BRD_ECPMC }, - { "ecppci", BRD_ECPPCI }, - { "ec/ra", BRD_ECPPCI }, - { "ec/ra-pc", BRD_ECPPCI }, - { "ec/ra-pci", BRD_ECPPCI }, - { "29", BRD_ECPPCI }, -}; - -/* - * Define the module agruments. - */ -MODULE_AUTHOR("Greg Ungerer"); -MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); -MODULE_LICENSE("GPL"); - - -MODULE_PARM(board0, "1-3s"); -MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); -MODULE_PARM(board1, "1-3s"); -MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); -MODULE_PARM(board2, "1-3s"); -MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); -MODULE_PARM(board3, "1-3s"); -MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); - -#endif - -/* - * Set up a default memory address table for EISA board probing. - * The default addresses are all bellow 1Mbyte, which has to be the - * case anyway. They should be safe, since we only read values from - * them, and interrupts are disabled while we do it. If the higher - * memory support is compiled in then we also try probing around - * the 1Gb, 2Gb and 3Gb areas as well... - */ -static unsigned long stli_eisamemprobeaddrs[] = { - 0xc0000, 0xd0000, 0xe0000, 0xf0000, - 0x80000000, 0x80010000, 0x80020000, 0x80030000, - 0x40000000, 0x40010000, 0x40020000, 0x40030000, - 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, - 0xff000000, 0xff010000, 0xff020000, 0xff030000, -}; - -static int stli_eisamempsize = sizeof(stli_eisamemprobeaddrs) / sizeof(unsigned long); - -/* - * Define the Stallion PCI vendor and device IDs. - */ -#ifdef CONFIG_PCI -#ifndef PCI_VENDOR_ID_STALLION -#define PCI_VENDOR_ID_STALLION 0x124d -#endif -#ifndef PCI_DEVICE_ID_ECRA -#define PCI_DEVICE_ID_ECRA 0x0004 -#endif - -static struct pci_device_id istallion_pci_tbl[] = { - { PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); - -#endif /* CONFIG_PCI */ - -/*****************************************************************************/ - -/* - * Hardware configuration info for ECP boards. These defines apply - * to the directly accessible io ports of the ECP. There is a set of - * defines for each ECP board type, ISA, EISA, MCA and PCI. - */ -#define ECP_IOSIZE 4 - -#define ECP_MEMSIZE (128 * 1024) -#define ECP_PCIMEMSIZE (256 * 1024) - -#define ECP_ATPAGESIZE (4 * 1024) -#define ECP_MCPAGESIZE (4 * 1024) -#define ECP_EIPAGESIZE (64 * 1024) -#define ECP_PCIPAGESIZE (64 * 1024) - -#define STL_EISAID 0x8c4e - -/* - * Important defines for the ISA class of ECP board. - */ -#define ECP_ATIREG 0 -#define ECP_ATCONFR 1 -#define ECP_ATMEMAR 2 -#define ECP_ATMEMPR 3 -#define ECP_ATSTOP 0x1 -#define ECP_ATINTENAB 0x10 -#define ECP_ATENABLE 0x20 -#define ECP_ATDISABLE 0x00 -#define ECP_ATADDRMASK 0x3f000 -#define ECP_ATADDRSHFT 12 - -/* - * Important defines for the EISA class of ECP board. - */ -#define ECP_EIIREG 0 -#define ECP_EIMEMARL 1 -#define ECP_EICONFR 2 -#define ECP_EIMEMARH 3 -#define ECP_EIENABLE 0x1 -#define ECP_EIDISABLE 0x0 -#define ECP_EISTOP 0x4 -#define ECP_EIEDGE 0x00 -#define ECP_EILEVEL 0x80 -#define ECP_EIADDRMASKL 0x00ff0000 -#define ECP_EIADDRSHFTL 16 -#define ECP_EIADDRMASKH 0xff000000 -#define ECP_EIADDRSHFTH 24 -#define ECP_EIBRDENAB 0xc84 - -#define ECP_EISAID 0x4 - -/* - * Important defines for the Micro-channel class of ECP board. - * (It has a lot in common with the ISA boards.) - */ -#define ECP_MCIREG 0 -#define ECP_MCCONFR 1 -#define ECP_MCSTOP 0x20 -#define ECP_MCENABLE 0x80 -#define ECP_MCDISABLE 0x00 - -/* - * Important defines for the PCI class of ECP board. - * (It has a lot in common with the other ECP boards.) - */ -#define ECP_PCIIREG 0 -#define ECP_PCICONFR 1 -#define ECP_PCISTOP 0x01 - -/* - * Hardware configuration info for ONboard and Brumby boards. These - * defines apply to the directly accessible io ports of these boards. - */ -#define ONB_IOSIZE 16 -#define ONB_MEMSIZE (64 * 1024) -#define ONB_ATPAGESIZE (64 * 1024) -#define ONB_MCPAGESIZE (64 * 1024) -#define ONB_EIMEMSIZE (128 * 1024) -#define ONB_EIPAGESIZE (64 * 1024) - -/* - * Important defines for the ISA class of ONboard board. - */ -#define ONB_ATIREG 0 -#define ONB_ATMEMAR 1 -#define ONB_ATCONFR 2 -#define ONB_ATSTOP 0x4 -#define ONB_ATENABLE 0x01 -#define ONB_ATDISABLE 0x00 -#define ONB_ATADDRMASK 0xff0000 -#define ONB_ATADDRSHFT 16 - -#define ONB_MEMENABLO 0 -#define ONB_MEMENABHI 0x02 - -/* - * Important defines for the EISA class of ONboard board. - */ -#define ONB_EIIREG 0 -#define ONB_EIMEMARL 1 -#define ONB_EICONFR 2 -#define ONB_EIMEMARH 3 -#define ONB_EIENABLE 0x1 -#define ONB_EIDISABLE 0x0 -#define ONB_EISTOP 0x4 -#define ONB_EIEDGE 0x00 -#define ONB_EILEVEL 0x80 -#define ONB_EIADDRMASKL 0x00ff0000 -#define ONB_EIADDRSHFTL 16 -#define ONB_EIADDRMASKH 0xff000000 -#define ONB_EIADDRSHFTH 24 -#define ONB_EIBRDENAB 0xc84 - -#define ONB_EISAID 0x1 - -/* - * Important defines for the Brumby boards. They are pretty simple, - * there is not much that is programmably configurable. - */ -#define BBY_IOSIZE 16 -#define BBY_MEMSIZE (64 * 1024) -#define BBY_PAGESIZE (16 * 1024) - -#define BBY_ATIREG 0 -#define BBY_ATCONFR 1 -#define BBY_ATSTOP 0x4 - -/* - * Important defines for the Stallion boards. They are pretty simple, - * there is not much that is programmably configurable. - */ -#define STAL_IOSIZE 16 -#define STAL_MEMSIZE (64 * 1024) -#define STAL_PAGESIZE (64 * 1024) - -/* - * Define the set of status register values for EasyConnection panels. - * The signature will return with the status value for each panel. From - * this we can determine what is attached to the board - before we have - * actually down loaded any code to it. - */ -#define ECH_PNLSTATUS 2 -#define ECH_PNL16PORT 0x20 -#define ECH_PNLIDMASK 0x07 -#define ECH_PNLXPID 0x40 -#define ECH_PNLINTRPEND 0x80 - -/* - * Define some macros to do things to the board. Even those these boards - * are somewhat related there is often significantly different ways of - * doing some operation on it (like enable, paging, reset, etc). So each - * board class has a set of functions which do the commonly required - * operations. The macros below basically just call these functions, - * generally checking for a NULL function - which means that the board - * needs nothing done to it to achieve this operation! - */ -#define EBRDINIT(brdp) \ - if (brdp->init != NULL) \ - (* brdp->init)(brdp) - -#define EBRDENABLE(brdp) \ - if (brdp->enable != NULL) \ - (* brdp->enable)(brdp); - -#define EBRDDISABLE(brdp) \ - if (brdp->disable != NULL) \ - (* brdp->disable)(brdp); - -#define EBRDINTR(brdp) \ - if (brdp->intr != NULL) \ - (* brdp->intr)(brdp); - -#define EBRDRESET(brdp) \ - if (brdp->reset != NULL) \ - (* brdp->reset)(brdp); - -#define EBRDGETMEMPTR(brdp,offset) \ - (* brdp->getmemptr)(brdp, offset, __LINE__) - -/* - * Define the maximal baud rate, and the default baud base for ports. - */ -#define STL_MAXBAUD 460800 -#define STL_BAUDBASE 115200 -#define STL_CLOSEDELAY (5 * HZ / 10) - -/*****************************************************************************/ - -/* - * Define macros to extract a brd or port number from a minor number. - */ -#define MINOR2BRD(min) (((min) & 0xc0) >> 6) -#define MINOR2PORT(min) ((min) & 0x3f) - -/* - * Define a baud rate table that converts termios baud rate selector - * into the actual baud rate value. All baud rate calculations are based - * on the actual baud rate required. - */ -static unsigned int stli_baudrates[] = { - 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, - 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 -}; - -/*****************************************************************************/ - -/* - * Define some handy local macros... - */ -#undef MIN -#define MIN(a,b) (((a) <= (b)) ? (a) : (b)) - -#undef TOLOWER -#define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x)) - -/*****************************************************************************/ - -/* - * Prototype all functions in this driver! - */ - -#ifdef MODULE -static void stli_argbrds(void); -static int stli_parsebrd(stlconf_t *confp, char **argp); - -static unsigned long stli_atol(char *str); -#endif - -int stli_init(void); -static int stli_open(struct tty_struct *tty, struct file *filp); -static void stli_close(struct tty_struct *tty, struct file *filp); -static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); -static void stli_putchar(struct tty_struct *tty, unsigned char ch); -static void stli_flushchars(struct tty_struct *tty); -static int stli_writeroom(struct tty_struct *tty); -static int stli_charsinbuffer(struct tty_struct *tty); -static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); -static void stli_settermios(struct tty_struct *tty, struct termios *old); -static void stli_throttle(struct tty_struct *tty); -static void stli_unthrottle(struct tty_struct *tty); -static void stli_stop(struct tty_struct *tty); -static void stli_start(struct tty_struct *tty); -static void stli_flushbuffer(struct tty_struct *tty); -static void stli_breakctl(struct tty_struct *tty, int state); -static void stli_waituntilsent(struct tty_struct *tty, int timeout); -static void stli_sendxchar(struct tty_struct *tty, char ch); -static void stli_hangup(struct tty_struct *tty); -static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos); - -static int stli_brdinit(stlibrd_t *brdp); -static int stli_startbrd(stlibrd_t *brdp); -static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); -static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); -static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); -static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp); -static void stli_poll(unsigned long arg); -static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp); -static int stli_initopen(stlibrd_t *brdp, stliport_t *portp); -static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait); -static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait); -static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp); -static void stli_dohangup(void *arg); -static int stli_setport(stliport_t *portp); -static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); -static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); -static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp); -static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp); -static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); -static long stli_mktiocm(unsigned long sigvalue); -static void stli_read(stlibrd_t *brdp, stliport_t *portp); -static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp); -static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp); -static int stli_getbrdstats(combrd_t __user *bp); -static int stli_getportstats(stliport_t *portp, comstats_t __user *cp); -static int stli_portcmdstats(stliport_t *portp); -static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp); -static int stli_getportstruct(stliport_t __user *arg); -static int stli_getbrdstruct(stlibrd_t __user *arg); -static void *stli_memalloc(int len); -static stlibrd_t *stli_allocbrd(void); - -static void stli_ecpinit(stlibrd_t *brdp); -static void stli_ecpenable(stlibrd_t *brdp); -static void stli_ecpdisable(stlibrd_t *brdp); -static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); -static void stli_ecpreset(stlibrd_t *brdp); -static void stli_ecpintr(stlibrd_t *brdp); -static void stli_ecpeiinit(stlibrd_t *brdp); -static void stli_ecpeienable(stlibrd_t *brdp); -static void stli_ecpeidisable(stlibrd_t *brdp); -static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line); -static void stli_ecpeireset(stlibrd_t *brdp); -static void stli_ecpmcenable(stlibrd_t *brdp); -static void stli_ecpmcdisable(stlibrd_t *brdp); -static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); -static void stli_ecpmcreset(stlibrd_t *brdp); -static void stli_ecppciinit(stlibrd_t *brdp); -static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line); -static void stli_ecppcireset(stlibrd_t *brdp); - -static void stli_onbinit(stlibrd_t *brdp); -static void stli_onbenable(stlibrd_t *brdp); -static void stli_onbdisable(stlibrd_t *brdp); -static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); -static void stli_onbreset(stlibrd_t *brdp); -static void stli_onbeinit(stlibrd_t *brdp); -static void stli_onbeenable(stlibrd_t *brdp); -static void stli_onbedisable(stlibrd_t *brdp); -static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line); -static void stli_onbereset(stlibrd_t *brdp); -static void stli_bbyinit(stlibrd_t *brdp); -static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line); -static void stli_bbyreset(stlibrd_t *brdp); -static void stli_stalinit(stlibrd_t *brdp); -static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); -static void stli_stalreset(stlibrd_t *brdp); - -static stliport_t *stli_getport(int brdnr, int panelnr, int portnr); - -static int stli_initecp(stlibrd_t *brdp); -static int stli_initonb(stlibrd_t *brdp); -static int stli_eisamemprobe(stlibrd_t *brdp); -static int stli_initports(stlibrd_t *brdp); - -#ifdef CONFIG_PCI -static int stli_initpcibrd(int brdtype, struct pci_dev *devp); -#endif - -/*****************************************************************************/ - -/* - * Define the driver info for a user level shared memory device. This - * device will work sort of like the /dev/kmem device - except that it - * will give access to the shared memory on the Stallion intelligent - * board. This is also a very useful debugging tool. - */ -static struct file_operations stli_fsiomem = { - .owner = THIS_MODULE, - .read = stli_memread, - .write = stli_memwrite, - .ioctl = stli_memioctl, -}; - -/*****************************************************************************/ - -/* - * Define a timer_list entry for our poll routine. The slave board - * is polled every so often to see if anything needs doing. This is - * much cheaper on host cpu than using interrupts. It turns out to - * not increase character latency by much either... - */ -static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); - -static int stli_timeron; - -/* - * Define the calculation for the timeout routine. - */ -#define STLI_TIMEOUT (jiffies + 1) - -/*****************************************************************************/ - -static struct class *istallion_class; - -#ifdef MODULE - -/* - * Loadable module initialization stuff. - */ - -static int __init istallion_module_init(void) -{ - unsigned long flags; - -#ifdef DEBUG - printk("init_module()\n"); -#endif - - save_flags(flags); - cli(); - stli_init(); - restore_flags(flags); - - return(0); -} - -/*****************************************************************************/ - -static void __exit istallion_module_exit(void) -{ - stlibrd_t *brdp; - stliport_t *portp; - unsigned long flags; - int i, j; - -#ifdef DEBUG - printk("cleanup_module()\n"); -#endif - - printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, - stli_drvversion); - - save_flags(flags); - cli(); - -/* - * Free up all allocated resources used by the ports. This includes - * memory and interrupts. - */ - if (stli_timeron) { - stli_timeron = 0; - del_timer(&stli_timerlist); - } - - i = tty_unregister_driver(stli_serial); - if (i) { - printk("STALLION: failed to un-register tty driver, " - "errno=%d\n", -i); - restore_flags(flags); - return; - } - put_tty_driver(stli_serial); - for (i = 0; i < 4; i++) { - devfs_remove("staliomem/%d", i); - class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, i)); - } - devfs_remove("staliomem"); - class_destroy(istallion_class); - if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) - printk("STALLION: failed to un-register serial memory device, " - "errno=%d\n", -i); - if (stli_tmpwritebuf != (char *) NULL) - kfree(stli_tmpwritebuf); - if (stli_txcookbuf != (char *) NULL) - kfree(stli_txcookbuf); - - for (i = 0; (i < stli_nrbrds); i++) { - if ((brdp = stli_brds[i]) == (stlibrd_t *) NULL) - continue; - for (j = 0; (j < STL_MAXPORTS); j++) { - portp = brdp->ports[j]; - if (portp != (stliport_t *) NULL) { - if (portp->tty != (struct tty_struct *) NULL) - tty_hangup(portp->tty); - kfree(portp); - } - } - - iounmap(brdp->membase); - if (brdp->iosize > 0) - release_region(brdp->iobase, brdp->iosize); - kfree(brdp); - stli_brds[i] = (stlibrd_t *) NULL; - } - - restore_flags(flags); -} - -module_init(istallion_module_init); -module_exit(istallion_module_exit); - -/*****************************************************************************/ - -/* - * Check for any arguments passed in on the module load command line. - */ - -static void stli_argbrds(void) -{ - stlconf_t conf; - stlibrd_t *brdp; - int nrargs, i; - -#ifdef DEBUG - printk("stli_argbrds()\n"); -#endif - - nrargs = sizeof(stli_brdsp) / sizeof(char **); - - for (i = stli_nrbrds; (i < nrargs); i++) { - memset(&conf, 0, sizeof(conf)); - if (stli_parsebrd(&conf, stli_brdsp[i]) == 0) - continue; - if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) - continue; - stli_nrbrds = i + 1; - brdp->brdnr = i; - brdp->brdtype = conf.brdtype; - brdp->iobase = conf.ioaddr1; - brdp->memaddr = conf.memaddr; - stli_brdinit(brdp); - } -} - -/*****************************************************************************/ - -/* - * Convert an ascii string number into an unsigned long. - */ - -static unsigned long stli_atol(char *str) -{ - unsigned long val; - int base, c; - char *sp; - - val = 0; - sp = str; - if ((*sp == '0') && (*(sp+1) == 'x')) { - base = 16; - sp += 2; - } else if (*sp == '0') { - base = 8; - sp++; - } else { - base = 10; - } - - for (; (*sp != 0); sp++) { - c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0'); - if ((c < 0) || (c >= base)) { - printk("STALLION: invalid argument %s\n", str); - val = 0; - break; - } - val = (val * base) + c; - } - return(val); -} - -/*****************************************************************************/ - -/* - * Parse the supplied argument string, into the board conf struct. - */ - -static int stli_parsebrd(stlconf_t *confp, char **argp) -{ - char *sp; - int nrbrdnames, i; - -#ifdef DEBUG - printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp); -#endif - - if ((argp[0] == (char *) NULL) || (*argp[0] == 0)) - return(0); - - for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) - *sp = TOLOWER(*sp); - - nrbrdnames = sizeof(stli_brdstr) / sizeof(stlibrdtype_t); - for (i = 0; (i < nrbrdnames); i++) { - if (strcmp(stli_brdstr[i].name, argp[0]) == 0) - break; - } - if (i >= nrbrdnames) { - printk("STALLION: unknown board name, %s?\n", argp[0]); - return(0); - } - - confp->brdtype = stli_brdstr[i].type; - if ((argp[1] != (char *) NULL) && (*argp[1] != 0)) - confp->ioaddr1 = stli_atol(argp[1]); - if ((argp[2] != (char *) NULL) && (*argp[2] != 0)) - confp->memaddr = stli_atol(argp[2]); - return(1); -} - -#endif - -/*****************************************************************************/ - -/* - * Local driver kernel malloc routine. - */ - -static void *stli_memalloc(int len) -{ - return((void *) kmalloc(len, GFP_KERNEL)); -} - -/*****************************************************************************/ - -static int stli_open(struct tty_struct *tty, struct file *filp) -{ - stlibrd_t *brdp; - stliport_t *portp; - unsigned int minordev; - int brdnr, portnr, rc; - -#ifdef DEBUG - printk("stli_open(tty=%x,filp=%x): device=%s\n", (int) tty, - (int) filp, tty->name); -#endif - - minordev = tty->index; - brdnr = MINOR2BRD(minordev); - if (brdnr >= stli_nrbrds) - return(-ENODEV); - brdp = stli_brds[brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(-ENODEV); - if ((brdp->state & BST_STARTED) == 0) - return(-ENODEV); - portnr = MINOR2PORT(minordev); - if ((portnr < 0) || (portnr > brdp->nrports)) - return(-ENODEV); - - portp = brdp->ports[portnr]; - if (portp == (stliport_t *) NULL) - return(-ENODEV); - if (portp->devnr < 1) - return(-ENODEV); - - -/* - * Check if this port is in the middle of closing. If so then wait - * until it is closed then return error status based on flag settings. - * The sleep here does not need interrupt protection since the wakeup - * for it is done with the same context. - */ - if (portp->flags & ASYNC_CLOSING) { - interruptible_sleep_on(&portp->close_wait); - if (portp->flags & ASYNC_HUP_NOTIFY) - return(-EAGAIN); - return(-ERESTARTSYS); - } - -/* - * On the first open of the device setup the port hardware, and - * initialize the per port data structure. Since initializing the port - * requires several commands to the board we will need to wait for any - * other open that is already initializing the port. - */ - portp->tty = tty; - tty->driver_data = portp; - portp->refcount++; - - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_INITIALIZING, &portp->state)); - if (signal_pending(current)) - return(-ERESTARTSYS); - - if ((portp->flags & ASYNC_INITIALIZED) == 0) { - set_bit(ST_INITIALIZING, &portp->state); - if ((rc = stli_initopen(brdp, portp)) >= 0) { - portp->flags |= ASYNC_INITIALIZED; - clear_bit(TTY_IO_ERROR, &tty->flags); - } - clear_bit(ST_INITIALIZING, &portp->state); - wake_up_interruptible(&portp->raw_wait); - if (rc < 0) - return(rc); - } - -/* - * Check if this port is in the middle of closing. If so then wait - * until it is closed then return error status, based on flag settings. - * The sleep here does not need interrupt protection since the wakeup - * for it is done with the same context. - */ - if (portp->flags & ASYNC_CLOSING) { - interruptible_sleep_on(&portp->close_wait); - if (portp->flags & ASYNC_HUP_NOTIFY) - return(-EAGAIN); - return(-ERESTARTSYS); - } - -/* - * Based on type of open being done check if it can overlap with any - * previous opens still in effect. If we are a normal serial device - * then also we might have to wait for carrier. - */ - if (!(filp->f_flags & O_NONBLOCK)) { - if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0) - return(rc); - } - portp->flags |= ASYNC_NORMAL_ACTIVE; - return(0); -} - -/*****************************************************************************/ - -static void stli_close(struct tty_struct *tty, struct file *filp) -{ - stlibrd_t *brdp; - stliport_t *portp; - unsigned long flags; - -#ifdef DEBUG - printk("stli_close(tty=%x,filp=%x)\n", (int) tty, (int) filp); -#endif - - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - - save_flags(flags); - cli(); - if (tty_hung_up_p(filp)) { - restore_flags(flags); - return; - } - if ((tty->count == 1) && (portp->refcount != 1)) - portp->refcount = 1; - if (portp->refcount-- > 1) { - restore_flags(flags); - return; - } - - portp->flags |= ASYNC_CLOSING; - -/* - * May want to wait for data to drain before closing. The BUSY flag - * keeps track of whether we are still transmitting or not. It is - * updated by messages from the slave - indicating when all chars - * really have drained. - */ - if (tty == stli_txcooktty) - stli_flushchars(tty); - tty->closing = 1; - if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE) - tty_wait_until_sent(tty, portp->closing_wait); - - portp->flags &= ~ASYNC_INITIALIZED; - brdp = stli_brds[portp->brdnr]; - stli_rawclose(brdp, portp, 0, 0); - if (tty->termios->c_cflag & HUPCL) { - stli_mkasysigs(&portp->asig, 0, 0); - if (test_bit(ST_CMDING, &portp->state)) - set_bit(ST_DOSIGS, &portp->state); - else - stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig, - sizeof(asysigs_t), 0); - } - clear_bit(ST_TXBUSY, &portp->state); - clear_bit(ST_RXSTOP, &portp->state); - set_bit(TTY_IO_ERROR, &tty->flags); - if (tty->ldisc.flush_buffer) - (tty->ldisc.flush_buffer)(tty); - set_bit(ST_DOFLUSHRX, &portp->state); - stli_flushbuffer(tty); - - tty->closing = 0; - portp->tty = (struct tty_struct *) NULL; - - if (portp->openwaitcnt) { - if (portp->close_delay) - msleep_interruptible(jiffies_to_msecs(portp->close_delay)); - wake_up_interruptible(&portp->open_wait); - } - - portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); - wake_up_interruptible(&portp->close_wait); - restore_flags(flags); -} - -/*****************************************************************************/ - -/* - * Carry out first open operations on a port. This involves a number of - * commands to be sent to the slave. We need to open the port, set the - * notification events, set the initial port settings, get and set the - * initial signal values. We sleep and wait in between each one. But - * this still all happens pretty quickly. - */ - -static int stli_initopen(stlibrd_t *brdp, stliport_t *portp) -{ - struct tty_struct *tty; - asynotify_t nt; - asyport_t aport; - int rc; - -#ifdef DEBUG - printk("stli_initopen(brdp=%x,portp=%x)\n", (int) brdp, (int) portp); -#endif - - if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) - return(rc); - - memset(&nt, 0, sizeof(asynotify_t)); - nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); - nt.signal = SG_DCD; - if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, - sizeof(asynotify_t), 0)) < 0) - return(rc); - - tty = portp->tty; - if (tty == (struct tty_struct *) NULL) - return(-ENODEV); - stli_mkasyport(portp, &aport, tty->termios); - if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, - sizeof(asyport_t), 0)) < 0) - return(rc); - - set_bit(ST_GETSIGS, &portp->state); - if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, - sizeof(asysigs_t), 1)) < 0) - return(rc); - if (test_and_clear_bit(ST_GETSIGS, &portp->state)) - portp->sigs = stli_mktiocm(portp->asig.sigvalue); - stli_mkasysigs(&portp->asig, 1, 1); - if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, - sizeof(asysigs_t), 0)) < 0) - return(rc); - - return(0); -} - -/*****************************************************************************/ - -/* - * Send an open message to the slave. This will sleep waiting for the - * acknowledgement, so must have user context. We need to co-ordinate - * with close events here, since we don't want open and close events - * to overlap. - */ - -static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait) -{ - volatile cdkhdr_t *hdrp; - volatile cdkctrl_t *cp; - volatile unsigned char *bits; - unsigned long flags; - int rc; - -#ifdef DEBUG - printk("stli_rawopen(brdp=%x,portp=%x,arg=%x,wait=%d)\n", - (int) brdp, (int) portp, (int) arg, wait); -#endif - -/* - * Send a message to the slave to open this port. - */ - save_flags(flags); - cli(); - -/* - * Slave is already closing this port. This can happen if a hangup - * occurs on this port. So we must wait until it is complete. The - * order of opens and closes may not be preserved across shared - * memory, so we must wait until it is complete. - */ - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_CLOSING, &portp->state)); - if (signal_pending(current)) { - restore_flags(flags); - return -ERESTARTSYS; - } - -/* - * Everything is ready now, so write the open message into shared - * memory. Once the message is in set the service bits to say that - * this port wants service. - */ - EBRDENABLE(brdp); - cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; - cp->openarg = arg; - cp->open = 1; - hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + - portp->portidx; - *bits |= portp->portbit; - EBRDDISABLE(brdp); - - if (wait == 0) { - restore_flags(flags); - return(0); - } - -/* - * Slave is in action, so now we must wait for the open acknowledgment - * to come back. - */ - rc = 0; - set_bit(ST_OPENING, &portp->state); - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_OPENING, &portp->state)); - if (signal_pending(current)) - rc = -ERESTARTSYS; - restore_flags(flags); - - if ((rc == 0) && (portp->rc != 0)) - rc = -EIO; - return(rc); -} - -/*****************************************************************************/ - -/* - * Send a close message to the slave. Normally this will sleep waiting - * for the acknowledgement, but if wait parameter is 0 it will not. If - * wait is true then must have user context (to sleep). - */ - -static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait) -{ - volatile cdkhdr_t *hdrp; - volatile cdkctrl_t *cp; - volatile unsigned char *bits; - unsigned long flags; - int rc; - -#ifdef DEBUG - printk("stli_rawclose(brdp=%x,portp=%x,arg=%x,wait=%d)\n", - (int) brdp, (int) portp, (int) arg, wait); -#endif - - save_flags(flags); - cli(); - -/* - * Slave is already closing this port. This can happen if a hangup - * occurs on this port. - */ - if (wait) { - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_CLOSING, &portp->state)); - if (signal_pending(current)) { - restore_flags(flags); - return -ERESTARTSYS; - } - } - -/* - * Write the close command into shared memory. - */ - EBRDENABLE(brdp); - cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; - cp->closearg = arg; - cp->close = 1; - hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + - portp->portidx; - *bits |= portp->portbit; - EBRDDISABLE(brdp); - - set_bit(ST_CLOSING, &portp->state); - if (wait == 0) { - restore_flags(flags); - return(0); - } - -/* - * Slave is in action, so now we must wait for the open acknowledgment - * to come back. - */ - rc = 0; - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_CLOSING, &portp->state)); - if (signal_pending(current)) - rc = -ERESTARTSYS; - restore_flags(flags); - - if ((rc == 0) && (portp->rc != 0)) - rc = -EIO; - return(rc); -} - -/*****************************************************************************/ - -/* - * Send a command to the slave and wait for the response. This must - * have user context (it sleeps). This routine is generic in that it - * can send any type of command. Its purpose is to wait for that command - * to complete (as opposed to initiating the command then returning). - */ - -static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) -{ - unsigned long flags; - -#ifdef DEBUG - printk("stli_cmdwait(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d," - "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd, - (int) arg, size, copyback); -#endif - - save_flags(flags); - cli(); - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_CMDING, &portp->state)); - if (signal_pending(current)) { - restore_flags(flags); - return -ERESTARTSYS; - } - - stli_sendcmd(brdp, portp, cmd, arg, size, copyback); - - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_CMDING, &portp->state)); - if (signal_pending(current)) { - restore_flags(flags); - return -ERESTARTSYS; - } - restore_flags(flags); - - if (portp->rc != 0) - return(-EIO); - return(0); -} - -/*****************************************************************************/ - -/* - * Send the termios settings for this port to the slave. This sleeps - * waiting for the command to complete - so must have user context. - */ - -static int stli_setport(stliport_t *portp) -{ - stlibrd_t *brdp; - asyport_t aport; - -#ifdef DEBUG - printk("stli_setport(portp=%x)\n", (int) portp); -#endif - - if (portp == (stliport_t *) NULL) - return(-ENODEV); - if (portp->tty == (struct tty_struct *) NULL) - return(-ENODEV); - if ((portp->brdnr < 0) && (portp->brdnr >= stli_nrbrds)) - return(-ENODEV); - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(-ENODEV); - - stli_mkasyport(portp, &aport, portp->tty->termios); - return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); -} - -/*****************************************************************************/ - -/* - * Possibly need to wait for carrier (DCD signal) to come high. Say - * maybe because if we are clocal then we don't need to wait... - */ - -static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp) -{ - unsigned long flags; - int rc, doclocal; - -#ifdef DEBUG - printk("stli_waitcarrier(brdp=%x,portp=%x,filp=%x)\n", - (int) brdp, (int) portp, (int) filp); -#endif - - rc = 0; - doclocal = 0; - - if (portp->tty->termios->c_cflag & CLOCAL) - doclocal++; - - save_flags(flags); - cli(); - portp->openwaitcnt++; - if (! tty_hung_up_p(filp)) - portp->refcount--; - - for (;;) { - stli_mkasysigs(&portp->asig, 1, 1); - if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, - &portp->asig, sizeof(asysigs_t), 0)) < 0) - break; - if (tty_hung_up_p(filp) || - ((portp->flags & ASYNC_INITIALIZED) == 0)) { - if (portp->flags & ASYNC_HUP_NOTIFY) - rc = -EBUSY; - else - rc = -ERESTARTSYS; - break; - } - if (((portp->flags & ASYNC_CLOSING) == 0) && - (doclocal || (portp->sigs & TIOCM_CD))) { - break; - } - if (signal_pending(current)) { - rc = -ERESTARTSYS; - break; - } - interruptible_sleep_on(&portp->open_wait); - } - - if (! tty_hung_up_p(filp)) - portp->refcount++; - portp->openwaitcnt--; - restore_flags(flags); - - return(rc); -} - -/*****************************************************************************/ - -/* - * Write routine. Take the data and put it in the shared memory ring - * queue. If port is not already sending chars then need to mark the - * service bits for this port. - */ - -static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - volatile cdkasy_t *ap; - volatile cdkhdr_t *hdrp; - volatile unsigned char *bits; - unsigned char *shbuf, *chbuf; - stliport_t *portp; - stlibrd_t *brdp; - unsigned int len, stlen, head, tail, size; - unsigned long flags; - -#ifdef DEBUG - printk("stli_write(tty=%x,buf=%x,count=%d)\n", - (int) tty, (int) buf, count); -#endif - - if ((tty == (struct tty_struct *) NULL) || - (stli_tmpwritebuf == (char *) NULL)) - return(0); - if (tty == stli_txcooktty) - stli_flushchars(tty); - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return(0); - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return(0); - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(0); - chbuf = (unsigned char *) buf; - -/* - * All data is now local, shove as much as possible into shared memory. - */ - save_flags(flags); - cli(); - EBRDENABLE(brdp); - ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); - head = (unsigned int) ap->txq.head; - tail = (unsigned int) ap->txq.tail; - if (tail != ((unsigned int) ap->txq.tail)) - tail = (unsigned int) ap->txq.tail; - size = portp->txsize; - if (head >= tail) { - len = size - (head - tail) - 1; - stlen = size - head; - } else { - len = tail - head - 1; - stlen = len; - } - - len = MIN(len, count); - count = 0; - shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset); - - while (len > 0) { - stlen = MIN(len, stlen); - memcpy((shbuf + head), chbuf, stlen); - chbuf += stlen; - len -= stlen; - count += stlen; - head += stlen; - if (head >= size) { - head = 0; - stlen = tail; - } - } - - ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); - ap->txq.head = head; - if (test_bit(ST_TXBUSY, &portp->state)) { - if (ap->changed.data & DT_TXEMPTY) - ap->changed.data &= ~DT_TXEMPTY; - } - hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + - portp->portidx; - *bits |= portp->portbit; - set_bit(ST_TXBUSY, &portp->state); - EBRDDISABLE(brdp); - - restore_flags(flags); - - return(count); -} - -/*****************************************************************************/ - -/* - * Output a single character. We put it into a temporary local buffer - * (for speed) then write out that buffer when the flushchars routine - * is called. There is a safety catch here so that if some other port - * writes chars before the current buffer has been, then we write them - * first them do the new ports. - */ - -static void stli_putchar(struct tty_struct *tty, unsigned char ch) -{ -#ifdef DEBUG - printk("stli_putchar(tty=%x,ch=%x)\n", (int) tty, (int) ch); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - if (tty != stli_txcooktty) { - if (stli_txcooktty != (struct tty_struct *) NULL) - stli_flushchars(stli_txcooktty); - stli_txcooktty = tty; - } - - stli_txcookbuf[stli_txcooksize++] = ch; -} - -/*****************************************************************************/ - -/* - * Transfer characters from the local TX cooking buffer to the board. - * We sort of ignore the tty that gets passed in here. We rely on the - * info stored with the TX cook buffer to tell us which port to flush - * the data on. In any case we clean out the TX cook buffer, for re-use - * by someone else. - */ - -static void stli_flushchars(struct tty_struct *tty) -{ - volatile cdkhdr_t *hdrp; - volatile unsigned char *bits; - volatile cdkasy_t *ap; - struct tty_struct *cooktty; - stliport_t *portp; - stlibrd_t *brdp; - unsigned int len, stlen, head, tail, size, count, cooksize; - unsigned char *buf, *shbuf; - unsigned long flags; - -#ifdef DEBUG - printk("stli_flushchars(tty=%x)\n", (int) tty); -#endif - - cooksize = stli_txcooksize; - cooktty = stli_txcooktty; - stli_txcooksize = 0; - stli_txcookrealsize = 0; - stli_txcooktty = (struct tty_struct *) NULL; - - if (tty == (struct tty_struct *) NULL) - return; - if (cooktty == (struct tty_struct *) NULL) - return; - if (tty != cooktty) - tty = cooktty; - if (cooksize == 0) - return; - - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return; - - save_flags(flags); - cli(); - EBRDENABLE(brdp); - - ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); - head = (unsigned int) ap->txq.head; - tail = (unsigned int) ap->txq.tail; - if (tail != ((unsigned int) ap->txq.tail)) - tail = (unsigned int) ap->txq.tail; - size = portp->txsize; - if (head >= tail) { - len = size - (head - tail) - 1; - stlen = size - head; - } else { - len = tail - head - 1; - stlen = len; - } - - len = MIN(len, cooksize); - count = 0; - shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset); - buf = stli_txcookbuf; - - while (len > 0) { - stlen = MIN(len, stlen); - memcpy((shbuf + head), buf, stlen); - buf += stlen; - len -= stlen; - count += stlen; - head += stlen; - if (head >= size) { - head = 0; - stlen = tail; - } - } - - ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); - ap->txq.head = head; - - if (test_bit(ST_TXBUSY, &portp->state)) { - if (ap->changed.data & DT_TXEMPTY) - ap->changed.data &= ~DT_TXEMPTY; - } - hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + - portp->portidx; - *bits |= portp->portbit; - set_bit(ST_TXBUSY, &portp->state); - - EBRDDISABLE(brdp); - restore_flags(flags); -} - -/*****************************************************************************/ - -static int stli_writeroom(struct tty_struct *tty) -{ - volatile cdkasyrq_t *rp; - stliport_t *portp; - stlibrd_t *brdp; - unsigned int head, tail, len; - unsigned long flags; - -#ifdef DEBUG - printk("stli_writeroom(tty=%x)\n", (int) tty); -#endif - - if (tty == (struct tty_struct *) NULL) - return(0); - if (tty == stli_txcooktty) { - if (stli_txcookrealsize != 0) { - len = stli_txcookrealsize - stli_txcooksize; - return(len); - } - } - - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return(0); - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return(0); - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(0); - - save_flags(flags); - cli(); - EBRDENABLE(brdp); - rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq; - head = (unsigned int) rp->head; - tail = (unsigned int) rp->tail; - if (tail != ((unsigned int) rp->tail)) - tail = (unsigned int) rp->tail; - len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); - len--; - EBRDDISABLE(brdp); - restore_flags(flags); - - if (tty == stli_txcooktty) { - stli_txcookrealsize = len; - len -= stli_txcooksize; - } - return(len); -} - -/*****************************************************************************/ - -/* - * Return the number of characters in the transmit buffer. Normally we - * will return the number of chars in the shared memory ring queue. - * We need to kludge around the case where the shared memory buffer is - * empty but not all characters have drained yet, for this case just - * return that there is 1 character in the buffer! - */ - -static int stli_charsinbuffer(struct tty_struct *tty) -{ - volatile cdkasyrq_t *rp; - stliport_t *portp; - stlibrd_t *brdp; - unsigned int head, tail, len; - unsigned long flags; - -#ifdef DEBUG - printk("stli_charsinbuffer(tty=%x)\n", (int) tty); -#endif - - if (tty == (struct tty_struct *) NULL) - return(0); - if (tty == stli_txcooktty) - stli_flushchars(tty); - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return(0); - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return(0); - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(0); - - save_flags(flags); - cli(); - EBRDENABLE(brdp); - rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq; - head = (unsigned int) rp->head; - tail = (unsigned int) rp->tail; - if (tail != ((unsigned int) rp->tail)) - tail = (unsigned int) rp->tail; - len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); - if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) - len = 1; - EBRDDISABLE(brdp); - restore_flags(flags); - - return(len); -} - -/*****************************************************************************/ - -/* - * Generate the serial struct info. - */ - -static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp) -{ - struct serial_struct sio; - stlibrd_t *brdp; - -#ifdef DEBUG - printk("stli_getserial(portp=%x,sp=%x)\n", (int) portp, (int) sp); -#endif - - memset(&sio, 0, sizeof(struct serial_struct)); - sio.type = PORT_UNKNOWN; - sio.line = portp->portnr; - sio.irq = 0; - sio.flags = portp->flags; - sio.baud_base = portp->baud_base; - sio.close_delay = portp->close_delay; - sio.closing_wait = portp->closing_wait; - sio.custom_divisor = portp->custom_divisor; - sio.xmit_fifo_size = 0; - sio.hub6 = 0; - - brdp = stli_brds[portp->brdnr]; - if (brdp != (stlibrd_t *) NULL) - sio.port = brdp->iobase; - - return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? - -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Set port according to the serial struct info. - * At this point we do not do any auto-configure stuff, so we will - * just quietly ignore any requests to change irq, etc. - */ - -static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp) -{ - struct serial_struct sio; - int rc; - -#ifdef DEBUG - printk("stli_setserial(portp=%p,sp=%p)\n", portp, sp); -#endif - - if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) - return -EFAULT; - if (!capable(CAP_SYS_ADMIN)) { - if ((sio.baud_base != portp->baud_base) || - (sio.close_delay != portp->close_delay) || - ((sio.flags & ~ASYNC_USR_MASK) != - (portp->flags & ~ASYNC_USR_MASK))) - return(-EPERM); - } - - portp->flags = (portp->flags & ~ASYNC_USR_MASK) | - (sio.flags & ASYNC_USR_MASK); - portp->baud_base = sio.baud_base; - portp->close_delay = sio.close_delay; - portp->closing_wait = sio.closing_wait; - portp->custom_divisor = sio.custom_divisor; - - if ((rc = stli_setport(portp)) < 0) - return(rc); - return(0); -} - -/*****************************************************************************/ - -static int stli_tiocmget(struct tty_struct *tty, struct file *file) -{ - stliport_t *portp = tty->driver_data; - stlibrd_t *brdp; - int rc; - - if (portp == (stliport_t *) NULL) - return(-ENODEV); - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return(0); - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(0); - if (tty->flags & (1 << TTY_IO_ERROR)) - return(-EIO); - - if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, - &portp->asig, sizeof(asysigs_t), 1)) < 0) - return(rc); - - return stli_mktiocm(portp->asig.sigvalue); -} - -static int stli_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) -{ - stliport_t *portp = tty->driver_data; - stlibrd_t *brdp; - int rts = -1, dtr = -1; - - if (portp == (stliport_t *) NULL) - return(-ENODEV); - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return(0); - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(0); - if (tty->flags & (1 << TTY_IO_ERROR)) - return(-EIO); - - if (set & TIOCM_RTS) - rts = 1; - if (set & TIOCM_DTR) - dtr = 1; - if (clear & TIOCM_RTS) - rts = 0; - if (clear & TIOCM_DTR) - dtr = 0; - - stli_mkasysigs(&portp->asig, dtr, rts); - - return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, - sizeof(asysigs_t), 0); -} - -static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) -{ - stliport_t *portp; - stlibrd_t *brdp; - unsigned int ival; - int rc; - void __user *argp = (void __user *)arg; - -#ifdef DEBUG - printk("stli_ioctl(tty=%x,file=%x,cmd=%x,arg=%x)\n", - (int) tty, (int) file, cmd, (int) arg); -#endif - - if (tty == (struct tty_struct *) NULL) - return(-ENODEV); - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return(-ENODEV); - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return(0); - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(0); - - if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { - if (tty->flags & (1 << TTY_IO_ERROR)) - return(-EIO); - } - - rc = 0; - - switch (cmd) { - case TIOCGSOFTCAR: - rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), - (unsigned __user *) arg); - break; - case TIOCSSOFTCAR: - if ((rc = get_user(ival, (unsigned __user *) arg)) == 0) - tty->termios->c_cflag = - (tty->termios->c_cflag & ~CLOCAL) | - (ival ? CLOCAL : 0); - break; - case TIOCGSERIAL: - rc = stli_getserial(portp, argp); - break; - case TIOCSSERIAL: - rc = stli_setserial(portp, argp); - break; - case STL_GETPFLAG: - rc = put_user(portp->pflag, (unsigned __user *)argp); - break; - case STL_SETPFLAG: - if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) - stli_setport(portp); - break; - case COM_GETPORTSTATS: - rc = stli_getportstats(portp, argp); - break; - case COM_CLRPORTSTATS: - rc = stli_clrportstats(portp, argp); - break; - case TIOCSERCONFIG: - case TIOCSERGWILD: - case TIOCSERSWILD: - case TIOCSERGETLSR: - case TIOCSERGSTRUCT: - case TIOCSERGETMULTI: - case TIOCSERSETMULTI: - default: - rc = -ENOIOCTLCMD; - break; - } - - return(rc); -} - -/*****************************************************************************/ - -/* - * This routine assumes that we have user context and can sleep. - * Looks like it is true for the current ttys implementation..!! - */ - -static void stli_settermios(struct tty_struct *tty, struct termios *old) -{ - stliport_t *portp; - stlibrd_t *brdp; - struct termios *tiosp; - asyport_t aport; - -#ifdef DEBUG - printk("stli_settermios(tty=%x,old=%x)\n", (int) tty, (int) old); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return; - - tiosp = tty->termios; - if ((tiosp->c_cflag == old->c_cflag) && - (tiosp->c_iflag == old->c_iflag)) - return; - - stli_mkasyport(portp, &aport, tiosp); - stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); - stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); - stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, - sizeof(asysigs_t), 0); - if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) - tty->hw_stopped = 0; - if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) - wake_up_interruptible(&portp->open_wait); -} - -/*****************************************************************************/ - -/* - * Attempt to flow control who ever is sending us data. We won't really - * do any flow control action here. We can't directly, and even if we - * wanted to we would have to send a command to the slave. The slave - * knows how to flow control, and will do so when its buffers reach its - * internal high water marks. So what we will do is set a local state - * bit that will stop us sending any RX data up from the poll routine - * (which is the place where RX data from the slave is handled). - */ - -static void stli_throttle(struct tty_struct *tty) -{ - stliport_t *portp; - -#ifdef DEBUG - printk("stli_throttle(tty=%x)\n", (int) tty); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - - set_bit(ST_RXSTOP, &portp->state); -} - -/*****************************************************************************/ - -/* - * Unflow control the device sending us data... That means that all - * we have to do is clear the RXSTOP state bit. The next poll call - * will then be able to pass the RX data back up. - */ - -static void stli_unthrottle(struct tty_struct *tty) -{ - stliport_t *portp; - -#ifdef DEBUG - printk("stli_unthrottle(tty=%x)\n", (int) tty); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - - clear_bit(ST_RXSTOP, &portp->state); -} - -/*****************************************************************************/ - -/* - * Stop the transmitter. Basically to do this we will just turn TX - * interrupts off. - */ - -static void stli_stop(struct tty_struct *tty) -{ - stlibrd_t *brdp; - stliport_t *portp; - asyctrl_t actrl; - -#ifdef DEBUG - printk("stli_stop(tty=%x)\n", (int) tty); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return; - - memset(&actrl, 0, sizeof(asyctrl_t)); - actrl.txctrl = CT_STOPFLOW; -#if 0 - stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); -#endif -} - -/*****************************************************************************/ - -/* - * Start the transmitter again. Just turn TX interrupts back on. - */ - -static void stli_start(struct tty_struct *tty) -{ - stliport_t *portp; - stlibrd_t *brdp; - asyctrl_t actrl; - -#ifdef DEBUG - printk("stli_start(tty=%x)\n", (int) tty); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return; - - memset(&actrl, 0, sizeof(asyctrl_t)); - actrl.txctrl = CT_STARTFLOW; -#if 0 - stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); -#endif -} - -/*****************************************************************************/ - -/* - * Scheduler called hang up routine. This is called from the scheduler, - * not direct from the driver "poll" routine. We can't call it there - * since the real local hangup code will enable/disable the board and - * other things that we can't do while handling the poll. Much easier - * to deal with it some time later (don't really care when, hangups - * aren't that time critical). - */ - -static void stli_dohangup(void *arg) -{ - stliport_t *portp; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_dohangup(portp=%x)\n", (int) arg); -#endif - - /* - * FIXME: There's a module removal race here: tty_hangup - * calls schedule_work which will call into this - * driver later. - */ - portp = (stliport_t *) arg; - if (portp != (stliport_t *) NULL) { - if (portp->tty != (struct tty_struct *) NULL) { - tty_hangup(portp->tty); - } - } -} - -/*****************************************************************************/ - -/* - * Hangup this port. This is pretty much like closing the port, only - * a little more brutal. No waiting for data to drain. Shutdown the - * port and maybe drop signals. This is rather tricky really. We want - * to close the port as well. - */ - -static void stli_hangup(struct tty_struct *tty) -{ - stliport_t *portp; - stlibrd_t *brdp; - unsigned long flags; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_hangup(tty=%x)\n", (int) tty); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return; - - portp->flags &= ~ASYNC_INITIALIZED; - - save_flags(flags); - cli(); - if (! test_bit(ST_CLOSING, &portp->state)) - stli_rawclose(brdp, portp, 0, 0); - if (tty->termios->c_cflag & HUPCL) { - stli_mkasysigs(&portp->asig, 0, 0); - if (test_bit(ST_CMDING, &portp->state)) { - set_bit(ST_DOSIGS, &portp->state); - set_bit(ST_DOFLUSHTX, &portp->state); - set_bit(ST_DOFLUSHRX, &portp->state); - } else { - stli_sendcmd(brdp, portp, A_SETSIGNALSF, - &portp->asig, sizeof(asysigs_t), 0); - } - } - restore_flags(flags); - - clear_bit(ST_TXBUSY, &portp->state); - clear_bit(ST_RXSTOP, &portp->state); - set_bit(TTY_IO_ERROR, &tty->flags); - portp->tty = (struct tty_struct *) NULL; - portp->flags &= ~ASYNC_NORMAL_ACTIVE; - portp->refcount = 0; - wake_up_interruptible(&portp->open_wait); -} - -/*****************************************************************************/ - -/* - * Flush characters from the lower buffer. We may not have user context - * so we cannot sleep waiting for it to complete. Also we need to check - * if there is chars for this port in the TX cook buffer, and flush them - * as well. - */ - -static void stli_flushbuffer(struct tty_struct *tty) -{ - stliport_t *portp; - stlibrd_t *brdp; - unsigned long ftype, flags; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_flushbuffer(tty=%x)\n", (int) tty); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return; - - save_flags(flags); - cli(); - if (tty == stli_txcooktty) { - stli_txcooktty = (struct tty_struct *) NULL; - stli_txcooksize = 0; - stli_txcookrealsize = 0; - } - if (test_bit(ST_CMDING, &portp->state)) { - set_bit(ST_DOFLUSHTX, &portp->state); - } else { - ftype = FLUSHTX; - if (test_bit(ST_DOFLUSHRX, &portp->state)) { - ftype |= FLUSHRX; - clear_bit(ST_DOFLUSHRX, &portp->state); - } - stli_sendcmd(brdp, portp, A_FLUSH, &ftype, - sizeof(unsigned long), 0); - } - restore_flags(flags); - - wake_up_interruptible(&tty->write_wait); - if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && - tty->ldisc.write_wakeup) - (tty->ldisc.write_wakeup)(tty); -} - -/*****************************************************************************/ - -static void stli_breakctl(struct tty_struct *tty, int state) -{ - stlibrd_t *brdp; - stliport_t *portp; - long arg; - /* long savestate, savetime; */ - -#ifdef DEBUG - printk(KERN_DEBUG "stli_breakctl(tty=%x,state=%d)\n", (int) tty, state); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return; - -/* - * Due to a bug in the tty send_break() code we need to preserve - * the current process state and timeout... - savetime = current->timeout; - savestate = current->state; - */ - - arg = (state == -1) ? BREAKON : BREAKOFF; - stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); - -/* - * - current->timeout = savetime; - current->state = savestate; - */ -} - -/*****************************************************************************/ - -static void stli_waituntilsent(struct tty_struct *tty, int timeout) -{ - stliport_t *portp; - unsigned long tend; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_waituntilsent(tty=%x,timeout=%x)\n", (int) tty, timeout); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - - if (timeout == 0) - timeout = HZ; - tend = jiffies + timeout; - - while (test_bit(ST_TXBUSY, &portp->state)) { - if (signal_pending(current)) - break; - msleep_interruptible(20); - if (time_after_eq(jiffies, tend)) - break; - } -} - -/*****************************************************************************/ - -static void stli_sendxchar(struct tty_struct *tty, char ch) -{ - stlibrd_t *brdp; - stliport_t *portp; - asyctrl_t actrl; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_sendxchar(tty=%x,ch=%x)\n", (int) tty, ch); -#endif - - if (tty == (struct tty_struct *) NULL) - return; - portp = tty->driver_data; - if (portp == (stliport_t *) NULL) - return; - if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return; - - memset(&actrl, 0, sizeof(asyctrl_t)); - if (ch == STOP_CHAR(tty)) { - actrl.rxctrl = CT_STOPFLOW; - } else if (ch == START_CHAR(tty)) { - actrl.rxctrl = CT_STARTFLOW; - } else { - actrl.txctrl = CT_SENDCHR; - actrl.tximdch = ch; - } - - stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); -} - -/*****************************************************************************/ - -#define MAXLINE 80 - -/* - * Format info for a specified port. The line is deliberately limited - * to 80 characters. (If it is too long it will be truncated, if too - * short then padded with spaces). - */ - -static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos) -{ - char *sp, *uart; - int rc, cnt; - - rc = stli_portcmdstats(portp); - - uart = "UNKNOWN"; - if (brdp->state & BST_STARTED) { - switch (stli_comstats.hwid) { - case 0: uart = "2681"; break; - case 1: uart = "SC26198"; break; - default: uart = "CD1400"; break; - } - } - - sp = pos; - sp += sprintf(sp, "%d: uart:%s ", portnr, uart); - - if ((brdp->state & BST_STARTED) && (rc >= 0)) { - sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal, - (int) stli_comstats.rxtotal); - - if (stli_comstats.rxframing) - sp += sprintf(sp, " fe:%d", - (int) stli_comstats.rxframing); - if (stli_comstats.rxparity) - sp += sprintf(sp, " pe:%d", - (int) stli_comstats.rxparity); - if (stli_comstats.rxbreaks) - sp += sprintf(sp, " brk:%d", - (int) stli_comstats.rxbreaks); - if (stli_comstats.rxoverrun) - sp += sprintf(sp, " oe:%d", - (int) stli_comstats.rxoverrun); - - cnt = sprintf(sp, "%s%s%s%s%s ", - (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "", - (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "", - (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "", - (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "", - (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : ""); - *sp = ' '; - sp += cnt; - } - - for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++) - *sp++ = ' '; - if (cnt >= MAXLINE) - pos[(MAXLINE - 2)] = '+'; - pos[(MAXLINE - 1)] = '\n'; - - return(MAXLINE); -} - -/*****************************************************************************/ - -/* - * Port info, read from the /proc file system. - */ - -static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data) -{ - stlibrd_t *brdp; - stliport_t *portp; - int brdnr, portnr, totalport; - int curoff, maxoff; - char *pos; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_readproc(page=%x,start=%x,off=%x,count=%d,eof=%x," - "data=%x\n", (int) page, (int) start, (int) off, count, - (int) eof, (int) data); -#endif - - pos = page; - totalport = 0; - curoff = 0; - - if (off == 0) { - pos += sprintf(pos, "%s: version %s", stli_drvtitle, - stli_drvversion); - while (pos < (page + MAXLINE - 1)) - *pos++ = ' '; - *pos++ = '\n'; - } - curoff = MAXLINE; - -/* - * We scan through for each board, panel and port. The offset is - * calculated on the fly, and irrelevant ports are skipped. - */ - for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { - brdp = stli_brds[brdnr]; - if (brdp == (stlibrd_t *) NULL) - continue; - if (brdp->state == 0) - continue; - - maxoff = curoff + (brdp->nrports * MAXLINE); - if (off >= maxoff) { - curoff = maxoff; - continue; - } - - totalport = brdnr * STL_MAXPORTS; - for (portnr = 0; (portnr < brdp->nrports); portnr++, - totalport++) { - portp = brdp->ports[portnr]; - if (portp == (stliport_t *) NULL) - continue; - if (off >= (curoff += MAXLINE)) - continue; - if ((pos - page + MAXLINE) > count) - goto stli_readdone; - pos += stli_portinfo(brdp, portp, totalport, pos); - } - } - - *eof = 1; - -stli_readdone: - *start = page; - return(pos - page); -} - -/*****************************************************************************/ - -/* - * Generic send command routine. This will send a message to the slave, - * of the specified type with the specified argument. Must be very - * careful of data that will be copied out from shared memory - - * containing command results. The command completion is all done from - * a poll routine that does not have user context. Therefore you cannot - * copy back directly into user space, or to the kernel stack of a - * process. This routine does not sleep, so can be called from anywhere. - */ - -static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) -{ - volatile cdkhdr_t *hdrp; - volatile cdkctrl_t *cp; - volatile unsigned char *bits; - unsigned long flags; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_sendcmd(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d," - "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd, - (int) arg, size, copyback); -#endif - - save_flags(flags); - cli(); - - if (test_bit(ST_CMDING, &portp->state)) { - printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n", - (int) cmd); - restore_flags(flags); - return; - } - - EBRDENABLE(brdp); - cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; - if (size > 0) { - memcpy((void *) &(cp->args[0]), arg, size); - if (copyback) { - portp->argp = arg; - portp->argsize = size; - } - } - cp->status = 0; - cp->cmd = cmd; - hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + - portp->portidx; - *bits |= portp->portbit; - set_bit(ST_CMDING, &portp->state); - EBRDDISABLE(brdp); - restore_flags(flags); -} - -/*****************************************************************************/ - -/* - * Read data from shared memory. This assumes that the shared memory - * is enabled and that interrupts are off. Basically we just empty out - * the shared memory buffer into the tty buffer. Must be careful to - * handle the case where we fill up the tty buffer, but still have - * more chars to unload. - */ - -static void stli_read(stlibrd_t *brdp, stliport_t *portp) -{ - volatile cdkasyrq_t *rp; - volatile char *shbuf; - struct tty_struct *tty; - unsigned int head, tail, size; - unsigned int len, stlen; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_read(brdp=%x,portp=%d)\n", - (int) brdp, (int) portp); -#endif - - if (test_bit(ST_RXSTOP, &portp->state)) - return; - tty = portp->tty; - if (tty == (struct tty_struct *) NULL) - return; - - rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; - head = (unsigned int) rp->head; - if (head != ((unsigned int) rp->head)) - head = (unsigned int) rp->head; - tail = (unsigned int) rp->tail; - size = portp->rxsize; - if (head >= tail) { - len = head - tail; - stlen = len; - } else { - len = size - (tail - head); - stlen = size - tail; - } - - len = MIN(len, (TTY_FLIPBUF_SIZE - tty->flip.count)); - shbuf = (volatile char *) EBRDGETMEMPTR(brdp, portp->rxoffset); - - while (len > 0) { - stlen = MIN(len, stlen); - memcpy(tty->flip.char_buf_ptr, (char *) (shbuf + tail), stlen); - memset(tty->flip.flag_buf_ptr, 0, stlen); - tty->flip.char_buf_ptr += stlen; - tty->flip.flag_buf_ptr += stlen; - tty->flip.count += stlen; - - len -= stlen; - tail += stlen; - if (tail >= size) { - tail = 0; - stlen = head; - } - } - rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; - rp->tail = tail; - - if (head != tail) - set_bit(ST_RXING, &portp->state); - - tty_schedule_flip(tty); -} - -/*****************************************************************************/ - -/* - * Set up and carry out any delayed commands. There is only a small set - * of slave commands that can be done "off-level". So it is not too - * difficult to deal with them here. - */ - -static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp) -{ - int cmd; - - if (test_bit(ST_DOSIGS, &portp->state)) { - if (test_bit(ST_DOFLUSHTX, &portp->state) && - test_bit(ST_DOFLUSHRX, &portp->state)) - cmd = A_SETSIGNALSF; - else if (test_bit(ST_DOFLUSHTX, &portp->state)) - cmd = A_SETSIGNALSFTX; - else if (test_bit(ST_DOFLUSHRX, &portp->state)) - cmd = A_SETSIGNALSFRX; - else - cmd = A_SETSIGNALS; - clear_bit(ST_DOFLUSHTX, &portp->state); - clear_bit(ST_DOFLUSHRX, &portp->state); - clear_bit(ST_DOSIGS, &portp->state); - memcpy((void *) &(cp->args[0]), (void *) &portp->asig, - sizeof(asysigs_t)); - cp->status = 0; - cp->cmd = cmd; - set_bit(ST_CMDING, &portp->state); - } else if (test_bit(ST_DOFLUSHTX, &portp->state) || - test_bit(ST_DOFLUSHRX, &portp->state)) { - cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); - cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); - clear_bit(ST_DOFLUSHTX, &portp->state); - clear_bit(ST_DOFLUSHRX, &portp->state); - memcpy((void *) &(cp->args[0]), (void *) &cmd, sizeof(int)); - cp->status = 0; - cp->cmd = A_FLUSH; - set_bit(ST_CMDING, &portp->state); - } -} - -/*****************************************************************************/ - -/* - * Host command service checking. This handles commands or messages - * coming from the slave to the host. Must have board shared memory - * enabled and interrupts off when called. Notice that by servicing the - * read data last we don't need to change the shared memory pointer - * during processing (which is a slow IO operation). - * Return value indicates if this port is still awaiting actions from - * the slave (like open, command, or even TX data being sent). If 0 - * then port is still busy, otherwise no longer busy. - */ - -static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp) -{ - volatile cdkasy_t *ap; - volatile cdkctrl_t *cp; - struct tty_struct *tty; - asynotify_t nt; - unsigned long oldsigs; - int rc, donerx; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_hostcmd(brdp=%x,channr=%d)\n", - (int) brdp, channr); -#endif - - ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); - cp = &ap->ctrl; - -/* - * Check if we are waiting for an open completion message. - */ - if (test_bit(ST_OPENING, &portp->state)) { - rc = (int) cp->openarg; - if ((cp->open == 0) && (rc != 0)) { - if (rc > 0) - rc--; - cp->openarg = 0; - portp->rc = rc; - clear_bit(ST_OPENING, &portp->state); - wake_up_interruptible(&portp->raw_wait); - } - } - -/* - * Check if we are waiting for a close completion message. - */ - if (test_bit(ST_CLOSING, &portp->state)) { - rc = (int) cp->closearg; - if ((cp->close == 0) && (rc != 0)) { - if (rc > 0) - rc--; - cp->closearg = 0; - portp->rc = rc; - clear_bit(ST_CLOSING, &portp->state); - wake_up_interruptible(&portp->raw_wait); - } - } - -/* - * Check if we are waiting for a command completion message. We may - * need to copy out the command results associated with this command. - */ - if (test_bit(ST_CMDING, &portp->state)) { - rc = cp->status; - if ((cp->cmd == 0) && (rc != 0)) { - if (rc > 0) - rc--; - if (portp->argp != (void *) NULL) { - memcpy(portp->argp, (void *) &(cp->args[0]), - portp->argsize); - portp->argp = (void *) NULL; - } - cp->status = 0; - portp->rc = rc; - clear_bit(ST_CMDING, &portp->state); - stli_dodelaycmd(portp, cp); - wake_up_interruptible(&portp->raw_wait); - } - } - -/* - * Check for any notification messages ready. This includes lots of - * different types of events - RX chars ready, RX break received, - * TX data low or empty in the slave, modem signals changed state. - */ - donerx = 0; - - if (ap->notify) { - nt = ap->changed; - ap->notify = 0; - tty = portp->tty; - - if (nt.signal & SG_DCD) { - oldsigs = portp->sigs; - portp->sigs = stli_mktiocm(nt.sigvalue); - clear_bit(ST_GETSIGS, &portp->state); - if ((portp->sigs & TIOCM_CD) && - ((oldsigs & TIOCM_CD) == 0)) - wake_up_interruptible(&portp->open_wait); - if ((oldsigs & TIOCM_CD) && - ((portp->sigs & TIOCM_CD) == 0)) { - if (portp->flags & ASYNC_CHECK_CD) { - if (tty) - schedule_work(&portp->tqhangup); - } - } - } - - if (nt.data & DT_TXEMPTY) - clear_bit(ST_TXBUSY, &portp->state); - if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { - if (tty != (struct tty_struct *) NULL) { - if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && - tty->ldisc.write_wakeup) { - (tty->ldisc.write_wakeup)(tty); - EBRDENABLE(brdp); - } - wake_up_interruptible(&tty->write_wait); - } - } - - if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { - if (tty != (struct tty_struct *) NULL) { - if (tty->flip.count < TTY_FLIPBUF_SIZE) { - tty->flip.count++; - *tty->flip.flag_buf_ptr++ = TTY_BREAK; - *tty->flip.char_buf_ptr++ = 0; - if (portp->flags & ASYNC_SAK) { - do_SAK(tty); - EBRDENABLE(brdp); - } - tty_schedule_flip(tty); - } - } - } - - if (nt.data & DT_RXBUSY) { - donerx++; - stli_read(brdp, portp); - } - } - -/* - * It might seem odd that we are checking for more RX chars here. - * But, we need to handle the case where the tty buffer was previously - * filled, but we had more characters to pass up. The slave will not - * send any more RX notify messages until the RX buffer has been emptied. - * But it will leave the service bits on (since the buffer is not empty). - * So from here we can try to process more RX chars. - */ - if ((!donerx) && test_bit(ST_RXING, &portp->state)) { - clear_bit(ST_RXING, &portp->state); - stli_read(brdp, portp); - } - - return((test_bit(ST_OPENING, &portp->state) || - test_bit(ST_CLOSING, &portp->state) || - test_bit(ST_CMDING, &portp->state) || - test_bit(ST_TXBUSY, &portp->state) || - test_bit(ST_RXING, &portp->state)) ? 0 : 1); -} - -/*****************************************************************************/ - -/* - * Service all ports on a particular board. Assumes that the boards - * shared memory is enabled, and that the page pointer is pointed - * at the cdk header structure. - */ - -static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp) -{ - stliport_t *portp; - unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; - unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; - unsigned char *slavep; - int bitpos, bitat, bitsize; - int channr, nrdevs, slavebitchange; - - bitsize = brdp->bitsize; - nrdevs = brdp->nrdevs; - -/* - * Check if slave wants any service. Basically we try to do as - * little work as possible here. There are 2 levels of service - * bits. So if there is nothing to do we bail early. We check - * 8 service bits at a time in the inner loop, so we can bypass - * the lot if none of them want service. - */ - memcpy(&hostbits[0], (((unsigned char *) hdrp) + brdp->hostoffset), - bitsize); - - memset(&slavebits[0], 0, bitsize); - slavebitchange = 0; - - for (bitpos = 0; (bitpos < bitsize); bitpos++) { - if (hostbits[bitpos] == 0) - continue; - channr = bitpos * 8; - for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { - if (hostbits[bitpos] & bitat) { - portp = brdp->ports[(channr - 1)]; - if (stli_hostcmd(brdp, portp)) { - slavebitchange++; - slavebits[bitpos] |= bitat; - } - } - } - } - -/* - * If any of the ports are no longer busy then update them in the - * slave request bits. We need to do this after, since a host port - * service may initiate more slave requests. - */ - if (slavebitchange) { - hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - slavep = ((unsigned char *) hdrp) + brdp->slaveoffset; - for (bitpos = 0; (bitpos < bitsize); bitpos++) { - if (slavebits[bitpos]) - slavep[bitpos] &= ~slavebits[bitpos]; - } - } -} - -/*****************************************************************************/ - -/* - * Driver poll routine. This routine polls the boards in use and passes - * messages back up to host when necessary. This is actually very - * CPU efficient, since we will always have the kernel poll clock, it - * adds only a few cycles when idle (since board service can be - * determined very easily), but when loaded generates no interrupts - * (with their expensive associated context change). - */ - -static void stli_poll(unsigned long arg) -{ - volatile cdkhdr_t *hdrp; - stlibrd_t *brdp; - int brdnr; - - stli_timerlist.expires = STLI_TIMEOUT; - add_timer(&stli_timerlist); - -/* - * Check each board and do any servicing required. - */ - for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { - brdp = stli_brds[brdnr]; - if (brdp == (stlibrd_t *) NULL) - continue; - if ((brdp->state & BST_STARTED) == 0) - continue; - - EBRDENABLE(brdp); - hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - if (hdrp->hostreq) - stli_brdpoll(brdp, hdrp); - EBRDDISABLE(brdp); - } -} - -/*****************************************************************************/ - -/* - * Translate the termios settings into the port setting structure of - * the slave. - */ - -static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_mkasyport(portp=%x,pp=%x,tiosp=%d)\n", - (int) portp, (int) pp, (int) tiosp); -#endif - - memset(pp, 0, sizeof(asyport_t)); - -/* - * Start of by setting the baud, char size, parity and stop bit info. - */ - pp->baudout = tiosp->c_cflag & CBAUD; - if (pp->baudout & CBAUDEX) { - pp->baudout &= ~CBAUDEX; - if ((pp->baudout < 1) || (pp->baudout > 4)) - tiosp->c_cflag &= ~CBAUDEX; - else - pp->baudout += 15; - } - pp->baudout = stli_baudrates[pp->baudout]; - if ((tiosp->c_cflag & CBAUD) == B38400) { - if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - pp->baudout = 57600; - else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - pp->baudout = 115200; - else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - pp->baudout = 230400; - else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - pp->baudout = 460800; - else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) - pp->baudout = (portp->baud_base / portp->custom_divisor); - } - if (pp->baudout > STL_MAXBAUD) - pp->baudout = STL_MAXBAUD; - pp->baudin = pp->baudout; - - switch (tiosp->c_cflag & CSIZE) { - case CS5: - pp->csize = 5; - break; - case CS6: - pp->csize = 6; - break; - case CS7: - pp->csize = 7; - break; - default: - pp->csize = 8; - break; - } - - if (tiosp->c_cflag & CSTOPB) - pp->stopbs = PT_STOP2; - else - pp->stopbs = PT_STOP1; - - if (tiosp->c_cflag & PARENB) { - if (tiosp->c_cflag & PARODD) - pp->parity = PT_ODDPARITY; - else - pp->parity = PT_EVENPARITY; - } else { - pp->parity = PT_NOPARITY; - } - -/* - * Set up any flow control options enabled. - */ - if (tiosp->c_iflag & IXON) { - pp->flow |= F_IXON; - if (tiosp->c_iflag & IXANY) - pp->flow |= F_IXANY; - } - if (tiosp->c_cflag & CRTSCTS) - pp->flow |= (F_RTSFLOW | F_CTSFLOW); - - pp->startin = tiosp->c_cc[VSTART]; - pp->stopin = tiosp->c_cc[VSTOP]; - pp->startout = tiosp->c_cc[VSTART]; - pp->stopout = tiosp->c_cc[VSTOP]; - -/* - * Set up the RX char marking mask with those RX error types we must - * catch. We can get the slave to help us out a little here, it will - * ignore parity errors and breaks for us, and mark parity errors in - * the data stream. - */ - if (tiosp->c_iflag & IGNPAR) - pp->iflag |= FI_IGNRXERRS; - if (tiosp->c_iflag & IGNBRK) - pp->iflag |= FI_IGNBREAK; - - portp->rxmarkmsk = 0; - if (tiosp->c_iflag & (INPCK | PARMRK)) - pp->iflag |= FI_1MARKRXERRS; - if (tiosp->c_iflag & BRKINT) - portp->rxmarkmsk |= BRKINT; - -/* - * Set up clocal processing as required. - */ - if (tiosp->c_cflag & CLOCAL) - portp->flags &= ~ASYNC_CHECK_CD; - else - portp->flags |= ASYNC_CHECK_CD; - -/* - * Transfer any persistent flags into the asyport structure. - */ - pp->pflag = (portp->pflag & 0xffff); - pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; - pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; - pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; -} - -/*****************************************************************************/ - -/* - * Construct a slave signals structure for setting the DTR and RTS - * signals as specified. - */ - -static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_mkasysigs(sp=%x,dtr=%d,rts=%d)\n", - (int) sp, dtr, rts); -#endif - - memset(sp, 0, sizeof(asysigs_t)); - if (dtr >= 0) { - sp->signal |= SG_DTR; - sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); - } - if (rts >= 0) { - sp->signal |= SG_RTS; - sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); - } -} - -/*****************************************************************************/ - -/* - * Convert the signals returned from the slave into a local TIOCM type - * signals value. We keep them locally in TIOCM format. - */ - -static long stli_mktiocm(unsigned long sigvalue) -{ - long tiocm; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_mktiocm(sigvalue=%x)\n", (int) sigvalue); -#endif - - tiocm = 0; - tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); - tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); - tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); - tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); - tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); - tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); - return(tiocm); -} - -/*****************************************************************************/ - -/* - * All panels and ports actually attached have been worked out. All - * we need to do here is set up the appropriate per port data structures. - */ - -static int stli_initports(stlibrd_t *brdp) -{ - stliport_t *portp; - int i, panelnr, panelport; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_initports(brdp=%x)\n", (int) brdp); -#endif - - for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { - portp = (stliport_t *) stli_memalloc(sizeof(stliport_t)); - if (portp == (stliport_t *) NULL) { - printk("STALLION: failed to allocate port structure\n"); - continue; - } - - memset(portp, 0, sizeof(stliport_t)); - portp->magic = STLI_PORTMAGIC; - portp->portnr = i; - portp->brdnr = brdp->brdnr; - portp->panelnr = panelnr; - portp->baud_base = STL_BAUDBASE; - portp->close_delay = STL_CLOSEDELAY; - portp->closing_wait = 30 * HZ; - INIT_WORK(&portp->tqhangup, stli_dohangup, portp); - init_waitqueue_head(&portp->open_wait); - init_waitqueue_head(&portp->close_wait); - init_waitqueue_head(&portp->raw_wait); - panelport++; - if (panelport >= brdp->panels[panelnr]) { - panelport = 0; - panelnr++; - } - brdp->ports[i] = portp; - } - - return(0); -} - -/*****************************************************************************/ - -/* - * All the following routines are board specific hardware operations. - */ - -static void stli_ecpinit(stlibrd_t *brdp) -{ - unsigned long memconf; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecpinit(brdp=%d)\n", (int) brdp); -#endif - - outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); - udelay(10); - outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); - udelay(100); - - memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; - outb(memconf, (brdp->iobase + ECP_ATMEMAR)); -} - -/*****************************************************************************/ - -static void stli_ecpenable(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecpenable(brdp=%x)\n", (int) brdp); -#endif - outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); -} - -/*****************************************************************************/ - -static void stli_ecpdisable(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecpdisable(brdp=%x)\n", (int) brdp); -#endif - outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); -} - -/*****************************************************************************/ - -static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) -{ - void *ptr; - unsigned char val; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecpgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, - (int) offset); -#endif - - if (offset > brdp->memsize) { - printk(KERN_ERR "STALLION: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ECP_ATPAGESIZE); - val = (unsigned char) (offset / ECP_ATPAGESIZE); - } - outb(val, (brdp->iobase + ECP_ATMEMPR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_ecpreset(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecpreset(brdp=%x)\n", (int) brdp); -#endif - - outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); - udelay(10); - outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); - udelay(500); -} - -/*****************************************************************************/ - -static void stli_ecpintr(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecpintr(brdp=%x)\n", (int) brdp); -#endif - outb(0x1, brdp->iobase); -} - -/*****************************************************************************/ - -/* - * The following set of functions act on ECP EISA boards. - */ - -static void stli_ecpeiinit(stlibrd_t *brdp) -{ - unsigned long memconf; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecpeiinit(brdp=%x)\n", (int) brdp); -#endif - - outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); - outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); - udelay(10); - outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); - udelay(500); - - memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; - outb(memconf, (brdp->iobase + ECP_EIMEMARL)); - memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; - outb(memconf, (brdp->iobase + ECP_EIMEMARH)); -} - -/*****************************************************************************/ - -static void stli_ecpeienable(stlibrd_t *brdp) -{ - outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); -} - -/*****************************************************************************/ - -static void stli_ecpeidisable(stlibrd_t *brdp) -{ - outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); -} - -/*****************************************************************************/ - -static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line) -{ - void *ptr; - unsigned char val; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecpeigetmemptr(brdp=%x,offset=%x,line=%d)\n", - (int) brdp, (int) offset, line); -#endif - - if (offset > brdp->memsize) { - printk(KERN_ERR "STALLION: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ECP_EIPAGESIZE); - if (offset < ECP_EIPAGESIZE) - val = ECP_EIENABLE; - else - val = ECP_EIENABLE | 0x40; - } - outb(val, (brdp->iobase + ECP_EICONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_ecpeireset(stlibrd_t *brdp) -{ - outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); - udelay(10); - outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); - udelay(500); -} - -/*****************************************************************************/ - -/* - * The following set of functions act on ECP MCA boards. - */ - -static void stli_ecpmcenable(stlibrd_t *brdp) -{ - outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); -} - -/*****************************************************************************/ - -static void stli_ecpmcdisable(stlibrd_t *brdp) -{ - outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); -} - -/*****************************************************************************/ - -static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) -{ - void *ptr; - unsigned char val; - - if (offset > brdp->memsize) { - printk(KERN_ERR "STALLION: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ECP_MCPAGESIZE); - val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; - } - outb(val, (brdp->iobase + ECP_MCCONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_ecpmcreset(stlibrd_t *brdp) -{ - outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); - udelay(10); - outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); - udelay(500); -} - -/*****************************************************************************/ - -/* - * The following set of functions act on ECP PCI boards. - */ - -static void stli_ecppciinit(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecppciinit(brdp=%x)\n", (int) brdp); -#endif - - outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); - udelay(10); - outb(0, (brdp->iobase + ECP_PCICONFR)); - udelay(500); -} - -/*****************************************************************************/ - -static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line) -{ - void *ptr; - unsigned char val; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)\n", - (int) brdp, (int) offset, line); -#endif - - if (offset > brdp->memsize) { - printk(KERN_ERR "STALLION: shared memory pointer=%x out of " - "range at line=%d(%d), board=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); - val = (offset / ECP_PCIPAGESIZE) << 1; - } - outb(val, (brdp->iobase + ECP_PCICONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_ecppcireset(stlibrd_t *brdp) -{ - outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); - udelay(10); - outb(0, (brdp->iobase + ECP_PCICONFR)); - udelay(500); -} - -/*****************************************************************************/ - -/* - * The following routines act on ONboards. - */ - -static void stli_onbinit(stlibrd_t *brdp) -{ - unsigned long memconf; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbinit(brdp=%d)\n", (int) brdp); -#endif - - outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); - udelay(10); - outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); - mdelay(1000); - - memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; - outb(memconf, (brdp->iobase + ONB_ATMEMAR)); - outb(0x1, brdp->iobase); - mdelay(1); -} - -/*****************************************************************************/ - -static void stli_onbenable(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbenable(brdp=%x)\n", (int) brdp); -#endif - outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); -} - -/*****************************************************************************/ - -static void stli_onbdisable(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbdisable(brdp=%x)\n", (int) brdp); -#endif - outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); -} - -/*****************************************************************************/ - -static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) -{ - void *ptr; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, - (int) offset); -#endif - - if (offset > brdp->memsize) { - printk(KERN_ERR "STALLION: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - } else { - ptr = brdp->membase + (offset % ONB_ATPAGESIZE); - } - return(ptr); -} - -/*****************************************************************************/ - -static void stli_onbreset(stlibrd_t *brdp) -{ - -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbreset(brdp=%x)\n", (int) brdp); -#endif - - outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); - udelay(10); - outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); - mdelay(1000); -} - -/*****************************************************************************/ - -/* - * The following routines act on ONboard EISA. - */ - -static void stli_onbeinit(stlibrd_t *brdp) -{ - unsigned long memconf; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbeinit(brdp=%d)\n", (int) brdp); -#endif - - outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); - outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); - udelay(10); - outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); - mdelay(1000); - - memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; - outb(memconf, (brdp->iobase + ONB_EIMEMARL)); - memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; - outb(memconf, (brdp->iobase + ONB_EIMEMARH)); - outb(0x1, brdp->iobase); - mdelay(1); -} - -/*****************************************************************************/ - -static void stli_onbeenable(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbeenable(brdp=%x)\n", (int) brdp); -#endif - outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); -} - -/*****************************************************************************/ - -static void stli_onbedisable(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbedisable(brdp=%x)\n", (int) brdp); -#endif - outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); -} - -/*****************************************************************************/ - -static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line) -{ - void *ptr; - unsigned char val; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_onbegetmemptr(brdp=%x,offset=%x,line=%d)\n", - (int) brdp, (int) offset, line); -#endif - - if (offset > brdp->memsize) { - printk(KERN_ERR "STALLION: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ONB_EIPAGESIZE); - if (offset < ONB_EIPAGESIZE) - val = ONB_EIENABLE; - else - val = ONB_EIENABLE | 0x40; - } - outb(val, (brdp->iobase + ONB_EICONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_onbereset(stlibrd_t *brdp) -{ - -#ifdef DEBUG - printk(KERN_ERR "stli_onbereset(brdp=%x)\n", (int) brdp); -#endif - - outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); - udelay(10); - outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); - mdelay(1000); -} - -/*****************************************************************************/ - -/* - * The following routines act on Brumby boards. - */ - -static void stli_bbyinit(stlibrd_t *brdp) -{ - -#ifdef DEBUG - printk(KERN_ERR "stli_bbyinit(brdp=%d)\n", (int) brdp); -#endif - - outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); - udelay(10); - outb(0, (brdp->iobase + BBY_ATCONFR)); - mdelay(1000); - outb(0x1, brdp->iobase); - mdelay(1); -} - -/*****************************************************************************/ - -static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line) -{ - void *ptr; - unsigned char val; - -#ifdef DEBUG - printk(KERN_ERR "stli_bbygetmemptr(brdp=%x,offset=%x)\n", (int) brdp, - (int) offset); -#endif - - if (offset > brdp->memsize) { - printk(KERN_ERR "STALLION: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % BBY_PAGESIZE); - val = (unsigned char) (offset / BBY_PAGESIZE); - } - outb(val, (brdp->iobase + BBY_ATCONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_bbyreset(stlibrd_t *brdp) -{ - -#ifdef DEBUG - printk(KERN_DEBUG "stli_bbyreset(brdp=%x)\n", (int) brdp); -#endif - - outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); - udelay(10); - outb(0, (brdp->iobase + BBY_ATCONFR)); - mdelay(1000); -} - -/*****************************************************************************/ - -/* - * The following routines act on original old Stallion boards. - */ - -static void stli_stalinit(stlibrd_t *brdp) -{ - -#ifdef DEBUG - printk(KERN_DEBUG "stli_stalinit(brdp=%d)\n", (int) brdp); -#endif - - outb(0x1, brdp->iobase); - mdelay(1000); -} - -/*****************************************************************************/ - -static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) -{ - void *ptr; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_stalgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, - (int) offset); -#endif - - if (offset > brdp->memsize) { - printk(KERN_ERR "STALLION: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - } else { - ptr = brdp->membase + (offset % STAL_PAGESIZE); - } - return(ptr); -} - -/*****************************************************************************/ - -static void stli_stalreset(stlibrd_t *brdp) -{ - volatile unsigned long *vecp; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_stalreset(brdp=%x)\n", (int) brdp); -#endif - - vecp = (volatile unsigned long *) (brdp->membase + 0x30); - *vecp = 0xffff0000; - outb(0, brdp->iobase); - mdelay(1000); -} - -/*****************************************************************************/ - -/* - * Try to find an ECP board and initialize it. This handles only ECP - * board types. - */ - -static int stli_initecp(stlibrd_t *brdp) -{ - cdkecpsig_t sig; - cdkecpsig_t *sigsp; - unsigned int status, nxtid; - char *name; - int panelnr, nrports; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_initecp(brdp=%x)\n", (int) brdp); -#endif - - if (!request_region(brdp->iobase, brdp->iosize, "istallion")) - return -EIO; - - if ((brdp->iobase == 0) || (brdp->memaddr == 0)) - { - release_region(brdp->iobase, brdp->iosize); - return(-ENODEV); - } - - brdp->iosize = ECP_IOSIZE; - -/* - * Based on the specific board type setup the common vars to access - * and enable shared memory. Set all board specific information now - * as well. - */ - switch (brdp->brdtype) { - case BRD_ECP: - brdp->membase = (void *) brdp->memaddr; - brdp->memsize = ECP_MEMSIZE; - brdp->pagesize = ECP_ATPAGESIZE; - brdp->init = stli_ecpinit; - brdp->enable = stli_ecpenable; - brdp->reenable = stli_ecpenable; - brdp->disable = stli_ecpdisable; - brdp->getmemptr = stli_ecpgetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_ecpreset; - name = "serial(EC8/64)"; - break; - - case BRD_ECPE: - brdp->membase = (void *) brdp->memaddr; - brdp->memsize = ECP_MEMSIZE; - brdp->pagesize = ECP_EIPAGESIZE; - brdp->init = stli_ecpeiinit; - brdp->enable = stli_ecpeienable; - brdp->reenable = stli_ecpeienable; - brdp->disable = stli_ecpeidisable; - brdp->getmemptr = stli_ecpeigetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_ecpeireset; - name = "serial(EC8/64-EI)"; - break; - - case BRD_ECPMC: - brdp->membase = (void *) brdp->memaddr; - brdp->memsize = ECP_MEMSIZE; - brdp->pagesize = ECP_MCPAGESIZE; - brdp->init = NULL; - brdp->enable = stli_ecpmcenable; - brdp->reenable = stli_ecpmcenable; - brdp->disable = stli_ecpmcdisable; - brdp->getmemptr = stli_ecpmcgetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_ecpmcreset; - name = "serial(EC8/64-MCA)"; - break; - - case BRD_ECPPCI: - brdp->membase = (void *) brdp->memaddr; - brdp->memsize = ECP_PCIMEMSIZE; - brdp->pagesize = ECP_PCIPAGESIZE; - brdp->init = stli_ecppciinit; - brdp->enable = NULL; - brdp->reenable = NULL; - brdp->disable = NULL; - brdp->getmemptr = stli_ecppcigetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_ecppcireset; - name = "serial(EC/RA-PCI)"; - break; - - default: - release_region(brdp->iobase, brdp->iosize); - return(-EINVAL); - } - -/* - * The per-board operations structure is all set up, so now let's go - * and get the board operational. Firstly initialize board configuration - * registers. Set the memory mapping info so we can get at the boards - * shared memory. - */ - EBRDINIT(brdp); - - brdp->membase = ioremap(brdp->memaddr, brdp->memsize); - if (brdp->membase == (void *) NULL) - { - release_region(brdp->iobase, brdp->iosize); - return(-ENOMEM); - } - -/* - * Now that all specific code is set up, enable the shared memory and - * look for the a signature area that will tell us exactly what board - * this is, and what it is connected to it. - */ - EBRDENABLE(brdp); - sigsp = (cdkecpsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); - memcpy(&sig, sigsp, sizeof(cdkecpsig_t)); - EBRDDISABLE(brdp); - -#if 0 - printk("%s(%d): sig-> magic=%x rom=%x panel=%x,%x,%x,%x,%x,%x,%x,%x\n", - __FILE__, __LINE__, (int) sig.magic, sig.romver, sig.panelid[0], - (int) sig.panelid[1], (int) sig.panelid[2], - (int) sig.panelid[3], (int) sig.panelid[4], - (int) sig.panelid[5], (int) sig.panelid[6], - (int) sig.panelid[7]); -#endif - - if (sig.magic != ECP_MAGIC) - { - release_region(brdp->iobase, brdp->iosize); - return(-ENODEV); - } - -/* - * Scan through the signature looking at the panels connected to the - * board. Calculate the total number of ports as we go. - */ - for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { - status = sig.panelid[nxtid]; - if ((status & ECH_PNLIDMASK) != nxtid) - break; - - brdp->panelids[panelnr] = status; - nrports = (status & ECH_PNL16PORT) ? 16 : 8; - if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) - nxtid++; - brdp->panels[panelnr] = nrports; - brdp->nrports += nrports; - nxtid++; - brdp->nrpanels++; - } - - - brdp->state |= BST_FOUND; - return(0); -} - -/*****************************************************************************/ - -/* - * Try to find an ONboard, Brumby or Stallion board and initialize it. - * This handles only these board types. - */ - -static int stli_initonb(stlibrd_t *brdp) -{ - cdkonbsig_t sig; - cdkonbsig_t *sigsp; - char *name; - int i; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_initonb(brdp=%x)\n", (int) brdp); -#endif - -/* - * Do a basic sanity check on the IO and memory addresses. - */ - if ((brdp->iobase == 0) || (brdp->memaddr == 0)) - return(-ENODEV); - - brdp->iosize = ONB_IOSIZE; - - if (!request_region(brdp->iobase, brdp->iosize, "istallion")) - return -EIO; - -/* - * Based on the specific board type setup the common vars to access - * and enable shared memory. Set all board specific information now - * as well. - */ - switch (brdp->brdtype) { - case BRD_ONBOARD: - case BRD_ONBOARD32: - case BRD_ONBOARD2: - case BRD_ONBOARD2_32: - case BRD_ONBOARDRS: - brdp->membase = (void *) brdp->memaddr; - brdp->memsize = ONB_MEMSIZE; - brdp->pagesize = ONB_ATPAGESIZE; - brdp->init = stli_onbinit; - brdp->enable = stli_onbenable; - brdp->reenable = stli_onbenable; - brdp->disable = stli_onbdisable; - brdp->getmemptr = stli_onbgetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_onbreset; - if (brdp->memaddr > 0x100000) - brdp->enabval = ONB_MEMENABHI; - else - brdp->enabval = ONB_MEMENABLO; - name = "serial(ONBoard)"; - break; - - case BRD_ONBOARDE: - brdp->membase = (void *) brdp->memaddr; - brdp->memsize = ONB_EIMEMSIZE; - brdp->pagesize = ONB_EIPAGESIZE; - brdp->init = stli_onbeinit; - brdp->enable = stli_onbeenable; - brdp->reenable = stli_onbeenable; - brdp->disable = stli_onbedisable; - brdp->getmemptr = stli_onbegetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_onbereset; - name = "serial(ONBoard/E)"; - break; - - case BRD_BRUMBY4: - case BRD_BRUMBY8: - case BRD_BRUMBY16: - brdp->membase = (void *) brdp->memaddr; - brdp->memsize = BBY_MEMSIZE; - brdp->pagesize = BBY_PAGESIZE; - brdp->init = stli_bbyinit; - brdp->enable = NULL; - brdp->reenable = NULL; - brdp->disable = NULL; - brdp->getmemptr = stli_bbygetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_bbyreset; - name = "serial(Brumby)"; - break; - - case BRD_STALLION: - brdp->membase = (void *) brdp->memaddr; - brdp->memsize = STAL_MEMSIZE; - brdp->pagesize = STAL_PAGESIZE; - brdp->init = stli_stalinit; - brdp->enable = NULL; - brdp->reenable = NULL; - brdp->disable = NULL; - brdp->getmemptr = stli_stalgetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_stalreset; - name = "serial(Stallion)"; - break; - - default: - release_region(brdp->iobase, brdp->iosize); - return(-EINVAL); - } - -/* - * The per-board operations structure is all set up, so now let's go - * and get the board operational. Firstly initialize board configuration - * registers. Set the memory mapping info so we can get at the boards - * shared memory. - */ - EBRDINIT(brdp); - - brdp->membase = ioremap(brdp->memaddr, brdp->memsize); - if (brdp->membase == (void *) NULL) - { - release_region(brdp->iobase, brdp->iosize); - return(-ENOMEM); - } - -/* - * Now that all specific code is set up, enable the shared memory and - * look for the a signature area that will tell us exactly what board - * this is, and how many ports. - */ - EBRDENABLE(brdp); - sigsp = (cdkonbsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); - memcpy(&sig, sigsp, sizeof(cdkonbsig_t)); - EBRDDISABLE(brdp); - -#if 0 - printk("%s(%d): sig-> magic=%x:%x:%x:%x romver=%x amask=%x:%x:%x\n", - __FILE__, __LINE__, sig.magic0, sig.magic1, sig.magic2, - sig.magic3, sig.romver, sig.amask0, sig.amask1, sig.amask2); -#endif - - if ((sig.magic0 != ONB_MAGIC0) || (sig.magic1 != ONB_MAGIC1) || - (sig.magic2 != ONB_MAGIC2) || (sig.magic3 != ONB_MAGIC3)) - { - release_region(brdp->iobase, brdp->iosize); - return(-ENODEV); - } - -/* - * Scan through the signature alive mask and calculate how many ports - * there are on this board. - */ - brdp->nrpanels = 1; - if (sig.amask1) { - brdp->nrports = 32; - } else { - for (i = 0; (i < 16); i++) { - if (((sig.amask0 << i) & 0x8000) == 0) - break; - } - brdp->nrports = i; - } - brdp->panels[0] = brdp->nrports; - - - brdp->state |= BST_FOUND; - return(0); -} - -/*****************************************************************************/ - -/* - * Start up a running board. This routine is only called after the - * code has been down loaded to the board and is operational. It will - * read in the memory map, and get the show on the road... - */ - -static int stli_startbrd(stlibrd_t *brdp) -{ - volatile cdkhdr_t *hdrp; - volatile cdkmem_t *memp; - volatile cdkasy_t *ap; - unsigned long flags; - stliport_t *portp; - int portnr, nrdevs, i, rc; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_startbrd(brdp=%x)\n", (int) brdp); -#endif - - rc = 0; - - save_flags(flags); - cli(); - EBRDENABLE(brdp); - hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - nrdevs = hdrp->nrdevs; - -#if 0 - printk("%s(%d): CDK version %d.%d.%d --> " - "nrdevs=%d memp=%x hostp=%x slavep=%x\n", - __FILE__, __LINE__, hdrp->ver_release, hdrp->ver_modification, - hdrp->ver_fix, nrdevs, (int) hdrp->memp, (int) hdrp->hostp, - (int) hdrp->slavep); -#endif - - if (nrdevs < (brdp->nrports + 1)) { - printk(KERN_ERR "STALLION: slave failed to allocate memory for " - "all devices, devices=%d\n", nrdevs); - brdp->nrports = nrdevs - 1; - } - brdp->nrdevs = nrdevs; - brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; - brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; - brdp->bitsize = (nrdevs + 7) / 8; - memp = (volatile cdkmem_t *) hdrp->memp; - if (((unsigned long) memp) > brdp->memsize) { - printk(KERN_ERR "STALLION: corrupted shared memory region?\n"); - rc = -EIO; - goto stli_donestartup; - } - memp = (volatile cdkmem_t *) EBRDGETMEMPTR(brdp, (unsigned long) memp); - if (memp->dtype != TYP_ASYNCTRL) { - printk(KERN_ERR "STALLION: no slave control device found\n"); - goto stli_donestartup; - } - memp++; - -/* - * Cycle through memory allocation of each port. We are guaranteed to - * have all ports inside the first page of slave window, so no need to - * change pages while reading memory map. - */ - for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { - if (memp->dtype != TYP_ASYNC) - break; - portp = brdp->ports[portnr]; - if (portp == (stliport_t *) NULL) - break; - portp->devnr = i; - portp->addr = memp->offset; - portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); - portp->portidx = (unsigned char) (i / 8); - portp->portbit = (unsigned char) (0x1 << (i % 8)); - } - - hdrp->slavereq = 0xff; - -/* - * For each port setup a local copy of the RX and TX buffer offsets - * and sizes. We do this separate from the above, because we need to - * move the shared memory page... - */ - for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { - portp = brdp->ports[portnr]; - if (portp == (stliport_t *) NULL) - break; - if (portp->addr == 0) - break; - ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); - if (ap != (volatile cdkasy_t *) NULL) { - portp->rxsize = ap->rxq.size; - portp->txsize = ap->txq.size; - portp->rxoffset = ap->rxq.offset; - portp->txoffset = ap->txq.offset; - } - } - -stli_donestartup: - EBRDDISABLE(brdp); - restore_flags(flags); - - if (rc == 0) - brdp->state |= BST_STARTED; - - if (! stli_timeron) { - stli_timeron++; - stli_timerlist.expires = STLI_TIMEOUT; - add_timer(&stli_timerlist); - } - - return(rc); -} - -/*****************************************************************************/ - -/* - * Probe and initialize the specified board. - */ - -static int __init stli_brdinit(stlibrd_t *brdp) -{ -#ifdef DEBUG - printk(KERN_DEBUG "stli_brdinit(brdp=%x)\n", (int) brdp); -#endif - - stli_brds[brdp->brdnr] = brdp; - - switch (brdp->brdtype) { - case BRD_ECP: - case BRD_ECPE: - case BRD_ECPMC: - case BRD_ECPPCI: - stli_initecp(brdp); - break; - case BRD_ONBOARD: - case BRD_ONBOARDE: - case BRD_ONBOARD2: - case BRD_ONBOARD32: - case BRD_ONBOARD2_32: - case BRD_ONBOARDRS: - case BRD_BRUMBY4: - case BRD_BRUMBY8: - case BRD_BRUMBY16: - case BRD_STALLION: - stli_initonb(brdp); - break; - case BRD_EASYIO: - case BRD_ECH: - case BRD_ECHMC: - case BRD_ECHPCI: - printk(KERN_ERR "STALLION: %s board type not supported in " - "this driver\n", stli_brdnames[brdp->brdtype]); - return(ENODEV); - default: - printk(KERN_ERR "STALLION: board=%d is unknown board " - "type=%d\n", brdp->brdnr, brdp->brdtype); - return(ENODEV); - } - - if ((brdp->state & BST_FOUND) == 0) { - printk(KERN_ERR "STALLION: %s board not found, board=%d " - "io=%x mem=%x\n", - stli_brdnames[brdp->brdtype], brdp->brdnr, - brdp->iobase, (int) brdp->memaddr); - return(ENODEV); - } - - stli_initports(brdp); - printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x " - "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], - brdp->brdnr, brdp->iobase, (int) brdp->memaddr, - brdp->nrpanels, brdp->nrports); - return(0); -} - -/*****************************************************************************/ - -/* - * Probe around trying to find where the EISA boards shared memory - * might be. This is a bit if hack, but it is the best we can do. - */ - -static int stli_eisamemprobe(stlibrd_t *brdp) -{ - cdkecpsig_t ecpsig, *ecpsigp; - cdkonbsig_t onbsig, *onbsigp; - int i, foundit; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_eisamemprobe(brdp=%x)\n", (int) brdp); -#endif - -/* - * First up we reset the board, to get it into a known state. There - * is only 2 board types here we need to worry about. Don;t use the - * standard board init routine here, it programs up the shared - * memory address, and we don't know it yet... - */ - if (brdp->brdtype == BRD_ECPE) { - outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); - outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); - udelay(10); - outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); - udelay(500); - stli_ecpeienable(brdp); - } else if (brdp->brdtype == BRD_ONBOARDE) { - outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); - outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); - udelay(10); - outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); - mdelay(100); - outb(0x1, brdp->iobase); - mdelay(1); - stli_onbeenable(brdp); - } else { - return(-ENODEV); - } - - foundit = 0; - brdp->memsize = ECP_MEMSIZE; - -/* - * Board shared memory is enabled, so now we have a poke around and - * see if we can find it. - */ - for (i = 0; (i < stli_eisamempsize); i++) { - brdp->memaddr = stli_eisamemprobeaddrs[i]; - brdp->membase = (void *) brdp->memaddr; - brdp->membase = ioremap(brdp->memaddr, brdp->memsize); - if (brdp->membase == (void *) NULL) - continue; - - if (brdp->brdtype == BRD_ECPE) { - ecpsigp = (cdkecpsig_t *) stli_ecpeigetmemptr(brdp, - CDK_SIGADDR, __LINE__); - memcpy(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); - if (ecpsig.magic == ECP_MAGIC) - foundit = 1; - } else { - onbsigp = (cdkonbsig_t *) stli_onbegetmemptr(brdp, - CDK_SIGADDR, __LINE__); - memcpy(&onbsig, onbsigp, sizeof(cdkonbsig_t)); - if ((onbsig.magic0 == ONB_MAGIC0) && - (onbsig.magic1 == ONB_MAGIC1) && - (onbsig.magic2 == ONB_MAGIC2) && - (onbsig.magic3 == ONB_MAGIC3)) - foundit = 1; - } - - iounmap(brdp->membase); - if (foundit) - break; - } - -/* - * Regardless of whether we found the shared memory or not we must - * disable the region. After that return success or failure. - */ - if (brdp->brdtype == BRD_ECPE) - stli_ecpeidisable(brdp); - else - stli_onbedisable(brdp); - - if (! foundit) { - brdp->memaddr = 0; - brdp->membase = NULL; - printk(KERN_ERR "STALLION: failed to probe shared memory " - "region for %s in EISA slot=%d\n", - stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); - return(-ENODEV); - } - return(0); -} - -static int stli_getbrdnr(void) -{ - int i; - - for (i = 0; i < STL_MAXBRDS; i++) { - if (!stli_brds[i]) { - if (i >= stli_nrbrds) - stli_nrbrds = i + 1; - return i; - } - } - return -1; -} - -/*****************************************************************************/ - -/* - * Probe around and try to find any EISA boards in system. The biggest - * problem here is finding out what memory address is associated with - * an EISA board after it is found. The registers of the ECPE and - * ONboardE are not readable - so we can't read them from there. We - * don't have access to the EISA CMOS (or EISA BIOS) so we don't - * actually have any way to find out the real value. The best we can - * do is go probing around in the usual places hoping we can find it. - */ - -static int stli_findeisabrds(void) -{ - stlibrd_t *brdp; - unsigned int iobase, eid; - int i; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_findeisabrds()\n"); -#endif - -/* - * Firstly check if this is an EISA system. Do this by probing for - * the system board EISA ID. If this is not an EISA system then - * don't bother going any further! - */ - outb(0xff, 0xc80); - if (inb(0xc80) == 0xff) - return(0); - -/* - * Looks like an EISA system, so go searching for EISA boards. - */ - for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { - outb(0xff, (iobase + 0xc80)); - eid = inb(iobase + 0xc80); - eid |= inb(iobase + 0xc81) << 8; - if (eid != STL_EISAID) - continue; - -/* - * We have found a board. Need to check if this board was - * statically configured already (just in case!). - */ - for (i = 0; (i < STL_MAXBRDS); i++) { - brdp = stli_brds[i]; - if (brdp == (stlibrd_t *) NULL) - continue; - if (brdp->iobase == iobase) - break; - } - if (i < STL_MAXBRDS) - continue; - -/* - * We have found a Stallion board and it is not configured already. - * Allocate a board structure and initialize it. - */ - if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) - return(-ENOMEM); - if ((brdp->brdnr = stli_getbrdnr()) < 0) - return(-ENOMEM); - eid = inb(iobase + 0xc82); - if (eid == ECP_EISAID) - brdp->brdtype = BRD_ECPE; - else if (eid == ONB_EISAID) - brdp->brdtype = BRD_ONBOARDE; - else - brdp->brdtype = BRD_UNKNOWN; - brdp->iobase = iobase; - outb(0x1, (iobase + 0xc84)); - if (stli_eisamemprobe(brdp)) - outb(0, (iobase + 0xc84)); - stli_brdinit(brdp); - } - - return(0); -} - -/*****************************************************************************/ - -/* - * Find the next available board number that is free. - */ - -/*****************************************************************************/ - -#ifdef CONFIG_PCI - -/* - * We have a Stallion board. Allocate a board structure and - * initialize it. Read its IO and MEMORY resources from PCI - * configuration space. - */ - -static int stli_initpcibrd(int brdtype, struct pci_dev *devp) -{ - stlibrd_t *brdp; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n", - brdtype, dev->bus->number, dev->devfn); -#endif - - if (pci_enable_device(devp)) - return(-EIO); - if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) - return(-ENOMEM); - if ((brdp->brdnr = stli_getbrdnr()) < 0) { - printk(KERN_INFO "STALLION: too many boards found, " - "maximum supported %d\n", STL_MAXBRDS); - return(0); - } - brdp->brdtype = brdtype; - -#ifdef DEBUG - printk(KERN_DEBUG "%s(%d): BAR[]=%lx,%lx,%lx,%lx\n", __FILE__, __LINE__, - pci_resource_start(devp, 0), - pci_resource_start(devp, 1), - pci_resource_start(devp, 2), - pci_resource_start(devp, 3)); -#endif - -/* - * We have all resources from the board, so lets setup the actual - * board structure now. - */ - brdp->iobase = pci_resource_start(devp, 3); - brdp->memaddr = pci_resource_start(devp, 2); - stli_brdinit(brdp); - - return(0); -} - -/*****************************************************************************/ - -/* - * Find all Stallion PCI boards that might be installed. Initialize each - * one as it is found. - */ - -static int stli_findpcibrds(void) -{ - struct pci_dev *dev = NULL; - int rc; - -#ifdef DEBUG - printk("stli_findpcibrds()\n"); -#endif - - while ((dev = pci_find_device(PCI_VENDOR_ID_STALLION, - PCI_DEVICE_ID_ECRA, dev))) { - if ((rc = stli_initpcibrd(BRD_ECPPCI, dev))) - return(rc); - } - - return(0); -} - -#endif - -/*****************************************************************************/ - -/* - * Allocate a new board structure. Fill out the basic info in it. - */ - -static stlibrd_t *stli_allocbrd(void) -{ - stlibrd_t *brdp; - - brdp = (stlibrd_t *) stli_memalloc(sizeof(stlibrd_t)); - if (brdp == (stlibrd_t *) NULL) { - printk(KERN_ERR "STALLION: failed to allocate memory " - "(size=%d)\n", sizeof(stlibrd_t)); - return((stlibrd_t *) NULL); - } - - memset(brdp, 0, sizeof(stlibrd_t)); - brdp->magic = STLI_BOARDMAGIC; - return(brdp); -} - -/*****************************************************************************/ - -/* - * Scan through all the boards in the configuration and see what we - * can find. - */ - -static int stli_initbrds(void) -{ - stlibrd_t *brdp, *nxtbrdp; - stlconf_t *confp; - int i, j; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_initbrds()\n"); -#endif - - if (stli_nrbrds > STL_MAXBRDS) { - printk(KERN_INFO "STALLION: too many boards in configuration " - "table, truncating to %d\n", STL_MAXBRDS); - stli_nrbrds = STL_MAXBRDS; - } - -/* - * Firstly scan the list of static boards configured. Allocate - * resources and initialize the boards as found. If this is a - * module then let the module args override static configuration. - */ - for (i = 0; (i < stli_nrbrds); i++) { - confp = &stli_brdconf[i]; -#ifdef MODULE - stli_parsebrd(confp, stli_brdsp[i]); -#endif - if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) - return(-ENOMEM); - brdp->brdnr = i; - brdp->brdtype = confp->brdtype; - brdp->iobase = confp->ioaddr1; - brdp->memaddr = confp->memaddr; - stli_brdinit(brdp); - } - -/* - * Static configuration table done, so now use dynamic methods to - * see if any more boards should be configured. - */ -#ifdef MODULE - stli_argbrds(); -#endif - if (STLI_EISAPROBE) - stli_findeisabrds(); -#ifdef CONFIG_PCI - stli_findpcibrds(); -#endif - -/* - * All found boards are initialized. Now for a little optimization, if - * no boards are sharing the "shared memory" regions then we can just - * leave them all enabled. This is in fact the usual case. - */ - stli_shared = 0; - if (stli_nrbrds > 1) { - for (i = 0; (i < stli_nrbrds); i++) { - brdp = stli_brds[i]; - if (brdp == (stlibrd_t *) NULL) - continue; - for (j = i + 1; (j < stli_nrbrds); j++) { - nxtbrdp = stli_brds[j]; - if (nxtbrdp == (stlibrd_t *) NULL) - continue; - if ((brdp->membase >= nxtbrdp->membase) && - (brdp->membase <= (nxtbrdp->membase + - nxtbrdp->memsize - 1))) { - stli_shared++; - break; - } - } - } - } - - if (stli_shared == 0) { - for (i = 0; (i < stli_nrbrds); i++) { - brdp = stli_brds[i]; - if (brdp == (stlibrd_t *) NULL) - continue; - if (brdp->state & BST_FOUND) { - EBRDENABLE(brdp); - brdp->enable = NULL; - brdp->disable = NULL; - } - } - } - - return(0); -} - -/*****************************************************************************/ - -/* - * Code to handle an "staliomem" read operation. This device is the - * contents of the board shared memory. It is used for down loading - * the slave image (and debugging :-) - */ - -static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) -{ - unsigned long flags; - void *memptr; - stlibrd_t *brdp; - int brdnr, size, n; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_memread(fp=%x,buf=%x,count=%x,offp=%x)\n", - (int) fp, (int) buf, count, (int) offp); -#endif - - brdnr = iminor(fp->f_dentry->d_inode); - if (brdnr >= stli_nrbrds) - return(-ENODEV); - brdp = stli_brds[brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(-ENODEV); - if (brdp->state == 0) - return(-ENODEV); - if (fp->f_pos >= brdp->memsize) - return(0); - - size = MIN(count, (brdp->memsize - fp->f_pos)); - - save_flags(flags); - cli(); - EBRDENABLE(brdp); - while (size > 0) { - memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos); - n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize))); - if (copy_to_user(buf, memptr, n)) { - count = -EFAULT; - goto out; - } - fp->f_pos += n; - buf += n; - size -= n; - } -out: - EBRDDISABLE(brdp); - restore_flags(flags); - - return(count); -} - -/*****************************************************************************/ - -/* - * Code to handle an "staliomem" write operation. This device is the - * contents of the board shared memory. It is used for down loading - * the slave image (and debugging :-) - */ - -static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) -{ - unsigned long flags; - void *memptr; - stlibrd_t *brdp; - char __user *chbuf; - int brdnr, size, n; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_memwrite(fp=%x,buf=%x,count=%x,offp=%x)\n", - (int) fp, (int) buf, count, (int) offp); -#endif - - brdnr = iminor(fp->f_dentry->d_inode); - if (brdnr >= stli_nrbrds) - return(-ENODEV); - brdp = stli_brds[brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(-ENODEV); - if (brdp->state == 0) - return(-ENODEV); - if (fp->f_pos >= brdp->memsize) - return(0); - - chbuf = (char __user *) buf; - size = MIN(count, (brdp->memsize - fp->f_pos)); - - save_flags(flags); - cli(); - EBRDENABLE(brdp); - while (size > 0) { - memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos); - n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize))); - if (copy_from_user(memptr, chbuf, n)) { - count = -EFAULT; - goto out; - } - fp->f_pos += n; - chbuf += n; - size -= n; - } -out: - EBRDDISABLE(brdp); - restore_flags(flags); - - return(count); -} - -/*****************************************************************************/ - -/* - * Return the board stats structure to user app. - */ - -static int stli_getbrdstats(combrd_t __user *bp) -{ - stlibrd_t *brdp; - int i; - - if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) - return -EFAULT; - if (stli_brdstats.brd >= STL_MAXBRDS) - return(-ENODEV); - brdp = stli_brds[stli_brdstats.brd]; - if (brdp == (stlibrd_t *) NULL) - return(-ENODEV); - - memset(&stli_brdstats, 0, sizeof(combrd_t)); - stli_brdstats.brd = brdp->brdnr; - stli_brdstats.type = brdp->brdtype; - stli_brdstats.hwid = 0; - stli_brdstats.state = brdp->state; - stli_brdstats.ioaddr = brdp->iobase; - stli_brdstats.memaddr = brdp->memaddr; - stli_brdstats.nrpanels = brdp->nrpanels; - stli_brdstats.nrports = brdp->nrports; - for (i = 0; (i < brdp->nrpanels); i++) { - stli_brdstats.panels[i].panel = i; - stli_brdstats.panels[i].hwid = brdp->panelids[i]; - stli_brdstats.panels[i].nrports = brdp->panels[i]; - } - - if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) - return -EFAULT; - return(0); -} - -/*****************************************************************************/ - -/* - * Resolve the referenced port number into a port struct pointer. - */ - -static stliport_t *stli_getport(int brdnr, int panelnr, int portnr) -{ - stlibrd_t *brdp; - int i; - - if ((brdnr < 0) || (brdnr >= STL_MAXBRDS)) - return((stliport_t *) NULL); - brdp = stli_brds[brdnr]; - if (brdp == (stlibrd_t *) NULL) - return((stliport_t *) NULL); - for (i = 0; (i < panelnr); i++) - portnr += brdp->panels[i]; - if ((portnr < 0) || (portnr >= brdp->nrports)) - return((stliport_t *) NULL); - return(brdp->ports[portnr]); -} - -/*****************************************************************************/ - -/* - * Return the port stats structure to user app. A NULL port struct - * pointer passed in means that we need to find out from the app - * what port to get stats for (used through board control device). - */ - -static int stli_portcmdstats(stliport_t *portp) -{ - unsigned long flags; - stlibrd_t *brdp; - int rc; - - memset(&stli_comstats, 0, sizeof(comstats_t)); - - if (portp == (stliport_t *) NULL) - return(-ENODEV); - brdp = stli_brds[portp->brdnr]; - if (brdp == (stlibrd_t *) NULL) - return(-ENODEV); - - if (brdp->state & BST_STARTED) { - if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, - &stli_cdkstats, sizeof(asystats_t), 1)) < 0) - return(rc); - } else { - memset(&stli_cdkstats, 0, sizeof(asystats_t)); - } - - stli_comstats.brd = portp->brdnr; - stli_comstats.panel = portp->panelnr; - stli_comstats.port = portp->portnr; - stli_comstats.state = portp->state; - stli_comstats.flags = portp->flags; - - save_flags(flags); - cli(); - if (portp->tty != (struct tty_struct *) NULL) { - if (portp->tty->driver_data == portp) { - stli_comstats.ttystate = portp->tty->flags; - stli_comstats.rxbuffered = portp->tty->flip.count; - if (portp->tty->termios != (struct termios *) NULL) { - stli_comstats.cflags = portp->tty->termios->c_cflag; - stli_comstats.iflags = portp->tty->termios->c_iflag; - stli_comstats.oflags = portp->tty->termios->c_oflag; - stli_comstats.lflags = portp->tty->termios->c_lflag; - } - } - } - restore_flags(flags); - - stli_comstats.txtotal = stli_cdkstats.txchars; - stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; - stli_comstats.txbuffered = stli_cdkstats.txringq; - stli_comstats.rxbuffered += stli_cdkstats.rxringq; - stli_comstats.rxoverrun = stli_cdkstats.overruns; - stli_comstats.rxparity = stli_cdkstats.parity; - stli_comstats.rxframing = stli_cdkstats.framing; - stli_comstats.rxlost = stli_cdkstats.ringover; - stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; - stli_comstats.txbreaks = stli_cdkstats.txbreaks; - stli_comstats.txxon = stli_cdkstats.txstart; - stli_comstats.txxoff = stli_cdkstats.txstop; - stli_comstats.rxxon = stli_cdkstats.rxstart; - stli_comstats.rxxoff = stli_cdkstats.rxstop; - stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; - stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; - stli_comstats.modem = stli_cdkstats.dcdcnt; - stli_comstats.hwid = stli_cdkstats.hwid; - stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); - - return(0); -} - -/*****************************************************************************/ - -/* - * Return the port stats structure to user app. A NULL port struct - * pointer passed in means that we need to find out from the app - * what port to get stats for (used through board control device). - */ - -static int stli_getportstats(stliport_t *portp, comstats_t __user *cp) -{ - stlibrd_t *brdp; - int rc; - - if (!portp) { - if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) - return -EFAULT; - portp = stli_getport(stli_comstats.brd, stli_comstats.panel, - stli_comstats.port); - if (!portp) - return -ENODEV; - } - - brdp = stli_brds[portp->brdnr]; - if (!brdp) - return -ENODEV; - - if ((rc = stli_portcmdstats(portp)) < 0) - return rc; - - return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? - -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Clear the port stats structure. We also return it zeroed out... - */ - -static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp) -{ - stlibrd_t *brdp; - int rc; - - if (!portp) { - if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) - return -EFAULT; - portp = stli_getport(stli_comstats.brd, stli_comstats.panel, - stli_comstats.port); - if (!portp) - return -ENODEV; - } - - brdp = stli_brds[portp->brdnr]; - if (!brdp) - return -ENODEV; - - if (brdp->state & BST_STARTED) { - if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) - return rc; - } - - memset(&stli_comstats, 0, sizeof(comstats_t)); - stli_comstats.brd = portp->brdnr; - stli_comstats.panel = portp->panelnr; - stli_comstats.port = portp->portnr; - - if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) - return -EFAULT; - return 0; -} - -/*****************************************************************************/ - -/* - * Return the entire driver ports structure to a user app. - */ - -static int stli_getportstruct(stliport_t __user *arg) -{ - stliport_t *portp; - - if (copy_from_user(&stli_dummyport, arg, sizeof(stliport_t))) - return -EFAULT; - portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, - stli_dummyport.portnr); - if (!portp) - return -ENODEV; - if (copy_to_user(arg, portp, sizeof(stliport_t))) - return -EFAULT; - return 0; -} - -/*****************************************************************************/ - -/* - * Return the entire driver board structure to a user app. - */ - -static int stli_getbrdstruct(stlibrd_t __user *arg) -{ - stlibrd_t *brdp; - - if (copy_from_user(&stli_dummybrd, arg, sizeof(stlibrd_t))) - return -EFAULT; - if ((stli_dummybrd.brdnr < 0) || (stli_dummybrd.brdnr >= STL_MAXBRDS)) - return -ENODEV; - brdp = stli_brds[stli_dummybrd.brdnr]; - if (!brdp) - return -ENODEV; - if (copy_to_user(arg, brdp, sizeof(stlibrd_t))) - return -EFAULT; - return 0; -} - -/*****************************************************************************/ - -/* - * The "staliomem" device is also required to do some special operations on - * the board. We need to be able to send an interrupt to the board, - * reset it, and start/stop it. - */ - -static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg) -{ - stlibrd_t *brdp; - int brdnr, rc, done; - void __user *argp = (void __user *)arg; - -#ifdef DEBUG - printk(KERN_DEBUG "stli_memioctl(ip=%x,fp=%x,cmd=%x,arg=%x)\n", - (int) ip, (int) fp, cmd, (int) arg); -#endif - -/* - * First up handle the board independent ioctls. - */ - done = 0; - rc = 0; - - switch (cmd) { - case COM_GETPORTSTATS: - rc = stli_getportstats(NULL, argp); - done++; - break; - case COM_CLRPORTSTATS: - rc = stli_clrportstats(NULL, argp); - done++; - break; - case COM_GETBRDSTATS: - rc = stli_getbrdstats(argp); - done++; - break; - case COM_READPORT: - rc = stli_getportstruct(argp); - done++; - break; - case COM_READBOARD: - rc = stli_getbrdstruct(argp); - done++; - break; - } - - if (done) - return(rc); - -/* - * Now handle the board specific ioctls. These all depend on the - * minor number of the device they were called from. - */ - brdnr = iminor(ip); - if (brdnr >= STL_MAXBRDS) - return(-ENODEV); - brdp = stli_brds[brdnr]; - if (!brdp) - return(-ENODEV); - if (brdp->state == 0) - return(-ENODEV); - - switch (cmd) { - case STL_BINTR: - EBRDINTR(brdp); - break; - case STL_BSTART: - rc = stli_startbrd(brdp); - break; - case STL_BSTOP: - brdp->state &= ~BST_STARTED; - break; - case STL_BRESET: - brdp->state &= ~BST_STARTED; - EBRDRESET(brdp); - if (stli_shared == 0) { - if (brdp->reenable != NULL) - (* brdp->reenable)(brdp); - } - break; - default: - rc = -ENOIOCTLCMD; - break; - } - - return(rc); -} - -static struct tty_operations stli_ops = { - .open = stli_open, - .close = stli_close, - .write = stli_write, - .put_char = stli_putchar, - .flush_chars = stli_flushchars, - .write_room = stli_writeroom, - .chars_in_buffer = stli_charsinbuffer, - .ioctl = stli_ioctl, - .set_termios = stli_settermios, - .throttle = stli_throttle, - .unthrottle = stli_unthrottle, - .stop = stli_stop, - .start = stli_start, - .hangup = stli_hangup, - .flush_buffer = stli_flushbuffer, - .break_ctl = stli_breakctl, - .wait_until_sent = stli_waituntilsent, - .send_xchar = stli_sendxchar, - .read_proc = stli_readproc, - .tiocmget = stli_tiocmget, - .tiocmset = stli_tiocmset, -}; - -/*****************************************************************************/ - -int __init stli_init(void) -{ - int i; - printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); - - stli_initbrds(); - - stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); - if (!stli_serial) - return -ENOMEM; - -/* - * Allocate a temporary write buffer. - */ - stli_tmpwritebuf = (char *) stli_memalloc(STLI_TXBUFSIZE); - if (stli_tmpwritebuf == (char *) NULL) - printk(KERN_ERR "STALLION: failed to allocate memory " - "(size=%d)\n", STLI_TXBUFSIZE); - stli_txcookbuf = stli_memalloc(STLI_TXBUFSIZE); - if (stli_txcookbuf == (char *) NULL) - printk(KERN_ERR "STALLION: failed to allocate memory " - "(size=%d)\n", STLI_TXBUFSIZE); - -/* - * Set up a character driver for the shared memory region. We need this - * to down load the slave code image. Also it is a useful debugging tool. - */ - if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem)) - printk(KERN_ERR "STALLION: failed to register serial memory " - "device\n"); - - devfs_mk_dir("staliomem"); - istallion_class = class_create(THIS_MODULE, "staliomem"); - for (i = 0; i < 4; i++) { - devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR, i), - S_IFCHR | S_IRUSR | S_IWUSR, - "staliomem/%d", i); - class_device_create(istallion_class, NULL, - MKDEV(STL_SIOMEMMAJOR, i), - NULL, "staliomem%d", i); - } - -/* - * Set up the tty driver structure and register us as a driver. - */ - stli_serial->owner = THIS_MODULE; - stli_serial->driver_name = stli_drvname; - stli_serial->name = stli_serialname; - stli_serial->major = STL_SERIALMAJOR; - stli_serial->minor_start = 0; - stli_serial->type = TTY_DRIVER_TYPE_SERIAL; - stli_serial->subtype = SERIAL_TYPE_NORMAL; - stli_serial->init_termios = stli_deftermios; - stli_serial->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(stli_serial, &stli_ops); - - if (tty_register_driver(stli_serial)) { - put_tty_driver(stli_serial); - printk(KERN_ERR "STALLION: failed to register serial driver\n"); - return -EBUSY; - } - return(0); -} - -/*****************************************************************************/ |