Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
new file mode 100644
index 0000000..21aed0e
--- /dev/null
+++ b/drivers/char/istallion.c
@@ -0,0 +1,5276 @@
+/*****************************************************************************/
+
+/*
+ * 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);
+int stli_eisaprobe = STLI_EISAPROBE;
+
+/*
+ * 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 struct timer_list stli_timerlist = TIMER_INITIALIZER(stli_poll, 0, 0);
+
+static int stli_timeron;
+
+/*
+ * Define the calculation for the timeout routine.
+ */
+#define STLI_TIMEOUT (jiffies + 1)
+
+/*****************************************************************************/
+
+static struct class_simple *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_simple_device_remove(MKDEV(STL_SIOMEMMAJOR, i));
+ }
+ devfs_remove("staliomem");
+ class_simple_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_simple_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_simple_device_add(istallion_class, 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);
+}
+
+/*****************************************************************************/