Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 862 insertions, 0 deletions

diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c
new file mode 100644
index 000000000000..6bf2e27dc23a
--- /dev/null
+++ b/drivers/char/applicom.c
@@ -0,0 +1,862 @@
+/* Derived from Applicom driver ac.c for SCO Unix                            */
+/* Ported by David Woodhouse, Axiom (Cambridge) Ltd.                         */
+/* dwmw2@infradead.org 30/8/98                                               */
+/* $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $                          */
+/* This module is for Linux 2.1 and 2.2 series kernels.                      */
+/*****************************************************************************/
+/* J PAGET 18/02/94 passage V2.4.2 ioctl avec code 2 reset to les interrupt  */
+/* ceci pour reseter correctement apres une sortie sauvage                   */
+/* J PAGET 02/05/94 passage V2.4.3 dans le traitement de d'interruption,     */
+/* LoopCount n'etait pas initialise a 0.                                     */
+/* F LAFORSE 04/07/95 version V2.6.0 lecture bidon apres acces a une carte   */
+/*           pour liberer le bus                                             */
+/* J.PAGET 19/11/95 version V2.6.1 Nombre, addresse,irq n'est plus configure */
+/* et passe en argument a acinit, mais est scrute sur le bus pour s'adapter  */
+/* au nombre de cartes presentes sur le bus. IOCL code 6 affichait V2.4.3    */
+/* F.LAFORSE 28/11/95 creation de fichiers acXX.o avec les differentes       */
+/* adresses de base des cartes, IOCTL 6 plus complet                         */
+/* J.PAGET le 19/08/96 copie de la version V2.6 en V2.8.0 sans modification  */
+/* de code autre que le texte V2.6.1 en V2.8.0                               */
+/*****************************************************************************/
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/pci.h>
+#include <linux/wait.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#include "applicom.h"
+
+
+/* NOTE: We use for loops with {write,read}b() instead of 
+   memcpy_{from,to}io throughout this driver. This is because
+   the board doesn't correctly handle word accesses - only
+   bytes. 
+*/
+
+
+#undef DEBUG
+
+#define MAX_BOARD 8             /* maximum of pc board possible */
+#define MAX_ISA_BOARD 4
+#define LEN_RAM_IO 0x800
+#define AC_MINOR 157
+
+#ifndef PCI_VENDOR_ID_APPLICOM
+#define PCI_VENDOR_ID_APPLICOM                0x1389
+#define PCI_DEVICE_ID_APPLICOM_PCIGENERIC     0x0001
+#define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN 0x0002
+#define PCI_DEVICE_ID_APPLICOM_PCI2000PFB     0x0003
+#endif
+#define MAX_PCI_DEVICE_NUM 3
+
+static char *applicom_pci_devnames[] = {
+        "PCI board",
+        "PCI2000IBS / PCI2000CAN",
+        "PCI2000PFB"
+};
+
+static struct pci_device_id applicom_pci_tbl[] = {
+        { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+        { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+        { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+        { 0 }
+};
+MODULE_DEVICE_TABLE(pci, applicom_pci_tbl);
+
+MODULE_AUTHOR("David Woodhouse & Applicom International");
+MODULE_DESCRIPTION("Driver for Applicom Profibus card");
+MODULE_LICENSE("GPL");
+
+MODULE_SUPPORTED_DEVICE("ac");
+
+
+static struct applicom_board {
+        unsigned long PhysIO;
+        void __iomem *RamIO;
+        wait_queue_head_t FlagSleepSend;
+        long irq;
+        spinlock_t mutex;
+} apbs[MAX_BOARD];
+
+static unsigned int irq = 0;    /* interrupt number IRQ       */
+static unsigned long mem = 0;   /* physical segment of board  */
+
+module_param(irq, uint, 0);
+MODULE_PARM_DESC(irq, "IRQ of the Applicom board");
+module_param(mem, ulong, 0);
+MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board");
+
+static unsigned int numboards;  /* number of installed boards */
+static volatile unsigned char Dummy;
+static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec);
+static unsigned int WriteErrorCount;    /* number of write error      */
+static unsigned int ReadErrorCount;     /* number of read error       */
+static unsigned int DeviceErrorCount;   /* number of device error     */
+
+static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *);
+static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *);
+static int ac_ioctl(struct inode *, struct file *, unsigned int,
+                    unsigned long);
+static irqreturn_t ac_interrupt(int, void *, struct pt_regs *);
+
+static struct file_operations ac_fops = {
+        .owner = THIS_MODULE,
+        .llseek = no_llseek,
+        .read = ac_read,
+        .write = ac_write,
+        .ioctl = ac_ioctl,
+};
+
+static struct miscdevice ac_miscdev = {
+        AC_MINOR,
+        "ac",
+        &ac_fops
+};
+
+static int dummy;       /* dev_id for request_irq() */
+
+static int ac_register_board(unsigned long physloc, void __iomem *loc, 
+                      unsigned char boardno)
+{
+        volatile unsigned char byte_reset_it;
+
+        if((readb(loc + CONF_END_TEST)     != 0x00) ||
+           (readb(loc + CONF_END_TEST + 1) != 0x55) ||
+           (readb(loc + CONF_END_TEST + 2) != 0xAA) ||
+           (readb(loc + CONF_END_TEST + 3) != 0xFF))
+                return 0;
+
+        if (!boardno)
+                boardno = readb(loc + NUMCARD_OWNER_TO_PC);
+
+        if (!boardno && boardno > MAX_BOARD) {
+                printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).\n",
+                       boardno, physloc, MAX_BOARD);
+                return 0;
+        }
+
+        if (apbs[boardno - 1].RamIO) {
+                printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)\n", 
+                       boardno, physloc, boardno, apbs[boardno-1].PhysIO);
+                return 0;
+        }
+
+        boardno--;
+
+        apbs[boardno].PhysIO = physloc;
+        apbs[boardno].RamIO = loc;
+        init_waitqueue_head(&apbs[boardno].FlagSleepSend);
+        spin_lock_init(&apbs[boardno].mutex);
+        byte_reset_it = readb(loc + RAM_IT_TO_PC);
+
+        numboards++;
+        return boardno + 1;
+}
+
+#ifdef MODULE
+
+#define applicom_init init_module
+
+void cleanup_module(void)
+{
+        int i;
+
+        misc_deregister(&ac_miscdev);
+
+        for (i = 0; i < MAX_BOARD; i++) {
+
+                if (!apbs[i].RamIO)
+                        continue;
+
+                if (apbs[i].irq)
+                        free_irq(apbs[i].irq, &dummy);
+
+                iounmap(apbs[i].RamIO);
+        }
+}
+
+#endif                          /* MODULE */
+
+int __init applicom_init(void)
+{
+        int i, numisa = 0;
+        struct pci_dev *dev = NULL;
+        void __iomem *RamIO;
+        int boardno;
+
+        printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $\n");
+
+        /* No mem and irq given - check for a PCI card */
+
+        while ( (dev = pci_get_class(PCI_CLASS_OTHERS << 16, dev))) {
+
+                if (dev->vendor != PCI_VENDOR_ID_APPLICOM)
+                        continue;
+                
+                if (dev->device  > MAX_PCI_DEVICE_NUM || dev->device == 0)
+                        continue;
+                
+                if (pci_enable_device(dev))
+                        return -EIO;
+
+                RamIO = ioremap(dev->resource[0].start, LEN_RAM_IO);
+
+                if (!RamIO) {
+                        printk(KERN_INFO "ac.o: Failed to ioremap PCI memory space at 0x%lx\n", dev->resource[0].start);
+                        pci_disable_device(dev);
+                        return -EIO;
+                }
+
+                printk(KERN_INFO "Applicom %s found at mem 0x%lx, irq %d\n",
+                       applicom_pci_devnames[dev->device-1], dev->resource[0].start, 
+                       dev->irq);
+
+                boardno = ac_register_board(dev->resource[0].start, RamIO,0);
+                if (!boardno) {
+                        printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.\n");
+                        iounmap(RamIO);
+                        pci_disable_device(dev);
+                        continue;
+                }
+
+                if (request_irq(dev->irq, &ac_interrupt, SA_SHIRQ, "Applicom PCI", &dummy)) {
+                        printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.\n", dev->irq);
+                        iounmap(RamIO);
+                        pci_disable_device(dev);
+                        apbs[boardno - 1].RamIO = NULL;
+                        continue;
+                }
+
+                /* Enable interrupts. */
+
+                writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC);
+
+                apbs[boardno - 1].irq = dev->irq;
+        }
+
+        /* Finished with PCI cards. If none registered, 
+         * and there was no mem/irq specified, exit */
+
+        if (!mem || !irq) {
+                if (numboards)
+                        goto fin;
+                else {
+                        printk(KERN_INFO "ac.o: No PCI boards found.\n");
+                        printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.\n");
+                        return -ENXIO;
+                }
+        }
+
+        /* Now try the specified ISA cards */
+
+        for (i = 0; i < MAX_ISA_BOARD; i++) {
+                RamIO = ioremap(mem + (LEN_RAM_IO * i), LEN_RAM_IO);
+
+                if (!RamIO) {
+                        printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)\n", i + 1);
+                        continue;
+                }
+
+                if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i),
+                                                  RamIO,i+1))) {
+                        iounmap(RamIO);
+                        continue;
+                }
+
+                printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %d\n", mem + (LEN_RAM_IO*i), irq);
+
+                if (!numisa) {
+                        if (request_irq(irq, &ac_interrupt, SA_SHIRQ, "Applicom ISA", &dummy)) {
+                                printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.\n", irq);
+                                iounmap(RamIO);
+                                apbs[boardno - 1].RamIO = NULL;
+                        }
+                        else
+                                apbs[boardno - 1].irq = irq;
+                }
+                else
+                        apbs[boardno - 1].irq = 0;
+
+                numisa++;
+        }
+
+        if (!numisa)
+                printk(KERN_WARNING"ac.o: No valid ISA Applicom boards found at mem 0x%lx\n",mem);
+
+ fin:
+        init_waitqueue_head(&FlagSleepRec);
+
+        WriteErrorCount = 0;
+        ReadErrorCount = 0;
+        DeviceErrorCount = 0;
+
+        if (numboards) {
+                misc_register(&ac_miscdev);
+                for (i = 0; i < MAX_BOARD; i++) {
+                        int serial;
+                        char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
+
+                        if (!apbs[i].RamIO)
+                                continue;
+
+                        for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++)
+                                boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial);
+
+                        boardname[serial] = 0;
+
+
+                        printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d",
+                               i+1, boardname,
+                               (int)(readb(apbs[i].RamIO + VERS) >> 4),
+                               (int)(readb(apbs[i].RamIO + VERS) & 0xF));
+                        
+                        serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + 
+                                (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + 
+                                (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) );
+
+                        if (serial != 0)
+                                printk(" S/N %d\n", serial);
+                        else
+                                printk("\n");
+                }
+                return 0;
+        }
+
+        else
+                return -ENXIO;
+}
+
+
+#ifndef MODULE
+__initcall(applicom_init);
+#endif
+
+static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos)
+{
+        unsigned int NumCard;   /* Board number 1 -> 8           */
+        unsigned int IndexCard; /* Index board number 0 -> 7     */
+        unsigned char TicCard;  /* Board TIC to send             */
+        unsigned long flags;    /* Current priority              */
+        struct st_ram_io st_loc;
+        struct mailbox tmpmailbox;
+#ifdef DEBUG
+        int c;
+#endif
+        DECLARE_WAITQUEUE(wait, current);
+
+        if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) {
+                static int warncount = 5;
+                if (warncount) {
+                        printk(KERN_INFO "Hmmm. write() of Applicom card, length %zd != expected %zd\n",
+                               count, sizeof(struct st_ram_io) + sizeof(struct mailbox));
+                        warncount--;
+                }
+                return -EINVAL;
+        }
+
+        if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io))) 
+                return -EFAULT;
+        
+        if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)],
+                          sizeof(struct mailbox))) 
+                return -EFAULT;
+
+        NumCard = st_loc.num_card;      /* board number to send          */
+        TicCard = st_loc.tic_des_from_pc;       /* tic number to send            */
+        IndexCard = NumCard - 1;
+
+        if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO)
+                return -EINVAL;
+
+#ifdef DEBUG
+        printk("Write to applicom card #%d. struct st_ram_io follows:",
+               IndexCard+1);
+
+                for (c = 0; c < sizeof(struct st_ram_io);) {
+                
+                        printk("\n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]);
+
+                        for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) {
+                                printk(" %2.2X", ((unsigned char *) &st_loc)[c]);
+                        }
+                }
+
+                printk("\nstruct mailbox follows:");
+
+                for (c = 0; c < sizeof(struct mailbox);) {
+                        printk("\n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]);
+
+                        for (c++; c % 8 && c < sizeof(struct mailbox); c++) {
+                                printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]);
+                        }
+                }
+
+                printk("\n");
+#endif
+
+        spin_lock_irqsave(&apbs[IndexCard].mutex, flags);
+
+        /* Test octet ready correct */
+        if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) { 
+                Dummy = readb(apbs[IndexCard].RamIO + VERS);
+                spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
+                printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %d\n",
+                       IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY));
+                DeviceErrorCount++;
+                return -EIO;
+        }
+        
+        /* Place ourselves on the wait queue */
+        set_current_state(TASK_INTERRUPTIBLE);
+        add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait);
+
+        /* Check whether the card is ready for us */
+        while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) {
+                Dummy = readb(apbs[IndexCard].RamIO + VERS);
+                /* It's busy. Sleep. */
+
+                spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
+                schedule();
+                if (signal_pending(current)) {
+                        remove_wait_queue(&apbs[IndexCard].FlagSleepSend,
+                                          &wait);
+                        return -EINTR;
+                }
+                spin_lock_irqsave(&apbs[IndexCard].mutex, flags);
+                set_current_state(TASK_INTERRUPTIBLE);
+        }
+
+        /* We may not have actually slept */
+        set_current_state(TASK_RUNNING);
+        remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait);
+
+        writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
+
+        /* Which is best - lock down the pages with rawio and then
+           copy directly, or use bounce buffers? For now we do the latter 
+           because it works with 2.2 still */
+        {
+                unsigned char *from = (unsigned char *) &tmpmailbox;
+                void __iomem *to = apbs[IndexCard].RamIO + RAM_FROM_PC;
+                int c;
+
+                for (c = 0; c < sizeof(struct mailbox); c++)
+                        writeb(*(from++), to++);
+        }
+
+        writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC);
+        writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC);
+        writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC);
+        writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC);
+        writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
+        writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
+        Dummy = readb(apbs[IndexCard].RamIO + VERS);
+        spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
+        return 0;
+}
+
+static int do_ac_read(int IndexCard, char __user *buf,
+                struct st_ram_io *st_loc, struct mailbox *mailbox)
+{
+        void __iomem *from = apbs[IndexCard].RamIO + RAM_TO_PC;
+        unsigned char *to = (unsigned char *)&mailbox;
+#ifdef DEBUG
+        int c;
+#endif
+
+        st_loc->tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC);
+        st_loc->numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC);
+
+
+        {
+                int c;
+
+                for (c = 0; c < sizeof(struct mailbox); c++)
+                        *(to++) = readb(from++);
+        }
+        writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY);
+        writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC);
+        writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC);
+        writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC), 
+               apbs[IndexCard].RamIO + TIC_ACK_FROM_PC);
+        writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY);
+        writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY);
+        writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
+        Dummy = readb(apbs[IndexCard].RamIO + VERS);
+
+#ifdef DEBUG
+                printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard);
+
+                for (c = 0; c < sizeof(struct st_ram_io);) {
+                        printk("\n%5.5X: %2.2X", c, ((unsigned char *)st_loc)[c]);
+
+                        for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) {
+                                printk(" %2.2X", ((unsigned char *)st_loc)[c]);
+                        }
+                }
+
+                printk("\nstruct mailbox follows:");
+
+                for (c = 0; c < sizeof(struct mailbox);) {
+                        printk("\n%5.5X: %2.2X", c, ((unsigned char *)mailbox)[c]);
+
+                        for (c++; c % 8 && c < sizeof(struct mailbox); c++) {
+                                printk(" %2.2X", ((unsigned char *)mailbox)[c]);
+                        }
+                }
+                printk("\n");
+#endif
+        return (sizeof(struct st_ram_io) + sizeof(struct mailbox));
+}
+
+static ssize_t ac_read (struct file *filp, char __user *buf, size_t count, loff_t *ptr)
+{
+        unsigned long flags;
+        unsigned int i;
+        unsigned char tmp;
+        int ret = 0;
+        DECLARE_WAITQUEUE(wait, current);
+#ifdef DEBUG
+        int loopcount=0;
+#endif
+        /* No need to ratelimit this. Only root can trigger it anyway */
+        if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) {
+                printk( KERN_WARNING "Hmmm. read() of Applicom card, length %zd != expected %zd\n",
+                        count,sizeof(struct st_ram_io) + sizeof(struct mailbox));
+                return -EINVAL;
+        }
+        
+        while(1) {
+                /* Stick ourself on the wait queue */
+                set_current_state(TASK_INTERRUPTIBLE);
+                add_wait_queue(&FlagSleepRec, &wait);
+                
+                /* Scan each board, looking for one which has a packet for us */
+                for (i=0; i < MAX_BOARD; i++) {
+                        if (!apbs[i].RamIO)
+                                continue;
+                        spin_lock_irqsave(&apbs[i].mutex, flags);
+                        
+                        tmp = readb(apbs[i].RamIO + DATA_TO_PC_READY);
+                        
+                        if (tmp == 2) {
+                                struct st_ram_io st_loc;
+                                struct mailbox mailbox;
+
+                                /* Got a packet for us */
+                                ret = do_ac_read(i, buf, &st_loc, &mailbox);
+                                spin_unlock_irqrestore(&apbs[i].mutex, flags);
+                                set_current_state(TASK_RUNNING);
+                                remove_wait_queue(&FlagSleepRec, &wait);
+
+                                if (copy_to_user(buf, &st_loc, sizeof(st_loc)))
+                                        return -EFAULT;
+                                if (copy_to_user(buf + sizeof(st_loc), &mailbox, sizeof(mailbox)))
+                                        return -EFAULT;
+                                return tmp;
+                        }
+                        
+                        if (tmp > 2) {
+                                /* Got an error */
+                                Dummy = readb(apbs[i].RamIO + VERS);
+                                
+                                spin_unlock_irqrestore(&apbs[i].mutex, flags);
+                                set_current_state(TASK_RUNNING);
+                                remove_wait_queue(&FlagSleepRec, &wait);
+                                
+                                printk(KERN_WARNING "APPLICOM driver read error board %d, DataToPcReady = %d\n",
+                                       i,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY));
+                                DeviceErrorCount++;
+                                return -EIO;
+                        }
+                        
+                        /* Nothing for us. Try the next board */
+                        Dummy = readb(apbs[i].RamIO + VERS);
+                        spin_unlock_irqrestore(&apbs[i].mutex, flags);
+                        
+                } /* per board */
+
+                /* OK - No boards had data for us. Sleep now */
+
+                schedule();
+                remove_wait_queue(&FlagSleepRec, &wait);
+
+                if (signal_pending(current))
+                        return -EINTR;
+
+#ifdef DEBUG
+                if (loopcount++ > 2) {
+                        printk("Looping in ac_read. loopcount %d\n", loopcount);
+                }
+#endif
+        } 
+}
+
+static irqreturn_t ac_interrupt(int vec, void *dev_instance, struct pt_regs *regs)
+{
+        unsigned int i;
+        unsigned int FlagInt;
+        unsigned int LoopCount;
+        int handled = 0;
+
+        //    printk("Applicom interrupt on IRQ %d occurred\n", vec);
+
+        LoopCount = 0;
+
+        do {
+                FlagInt = 0;
+                for (i = 0; i < MAX_BOARD; i++) {
+                        
+                        /* Skip if this board doesn't exist */
+                        if (!apbs[i].RamIO)
+                                continue;
+
+                        spin_lock(&apbs[i].mutex);
+
+                        /* Skip if this board doesn't want attention */
+                        if(readb(apbs[i].RamIO + RAM_IT_TO_PC) == 0) {
+                                spin_unlock(&apbs[i].mutex);
+                                continue;
+                        }
+
+                        handled = 1;
+                        FlagInt = 1;
+                        writeb(0, apbs[i].RamIO + RAM_IT_TO_PC);
+
+                        if (readb(apbs[i].RamIO + DATA_TO_PC_READY) > 2) {
+                                printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataToPcReady = %d\n",
+                                       i+1,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY));
+                                DeviceErrorCount++;
+                        }
+
+                        if((readb(apbs[i].RamIO + DATA_FROM_PC_READY) > 2) && 
+                           (readb(apbs[i].RamIO + DATA_FROM_PC_READY) != 6)) {
+                                
+                                printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataFromPcReady = %d\n",
+                                       i+1,(int)readb(apbs[i].RamIO + DATA_FROM_PC_READY));
+                                DeviceErrorCount++;
+                        }
+
+                        if (readb(apbs[i].RamIO + DATA_TO_PC_READY) == 2) {     /* mailbox sent by the card ?   */
+                                if (waitqueue_active(&FlagSleepRec)) {
+                                wake_up_interruptible(&FlagSleepRec);
+                        }
+                        }
+
+                        if (readb(apbs[i].RamIO + DATA_FROM_PC_READY) == 0) {   /* ram i/o free for write by pc ? */
+                                if (waitqueue_active(&apbs[i].FlagSleepSend)) { /* process sleep during read ?    */
+                                        wake_up_interruptible(&apbs[i].FlagSleepSend);
+                                }
+                        }
+                        Dummy = readb(apbs[i].RamIO + VERS);
+
+                        if(readb(apbs[i].RamIO + RAM_IT_TO_PC)) {
+                                /* There's another int waiting on this card */
+                                spin_unlock(&apbs[i].mutex);
+                                i--;
+                        } else {
+                                spin_unlock(&apbs[i].mutex);
+                        }
+                }
+                if (FlagInt)
+                        LoopCount = 0;
+                else
+                        LoopCount++;
+        } while(LoopCount < 2);
+        return IRQ_RETVAL(handled);
+}
+
+
+
+static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+     
+{                               /* @ ADG ou ATO selon le cas */
+        int i;
+        unsigned char IndexCard;
+        void __iomem *pmem;
+        int ret = 0;
+        volatile unsigned char byte_reset_it;
+        struct st_ram_io *adgl;
+        void __user *argp = (void __user *)arg;
+
+        /* In general, the device is only openable by root anyway, so we're not
+           particularly concerned that bogus ioctls can flood the console. */
+
+        adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL);
+        if (!adgl)
+                return -ENOMEM;
+
+        if (copy_from_user(adgl, argp, sizeof(struct st_ram_io))) {
+                kfree(adgl);
+                return -EFAULT;
+        }
+        
+        IndexCard = adgl->num_card-1;
+         
+        if(cmd != 0 && cmd != 6 &&
+           ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) {
+                static int warncount = 10;
+                if (warncount) {
+                        printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1);
+                        warncount--;
+                }
+                kfree(adgl);
+                return -EINVAL;
+        }
+
+        switch (cmd) {
+                
+        case 0:
+                pmem = apbs[IndexCard].RamIO;
+                for (i = 0; i < sizeof(struct st_ram_io); i++)
+                        ((unsigned char *)adgl)[i]=readb(pmem++);
+                if (copy_to_user(argp, adgl, sizeof(struct st_ram_io)))
+                        ret = -EFAULT;
+                break;
+        case 1:
+                pmem = apbs[IndexCard].RamIO + CONF_END_TEST;
+                for (i = 0; i < 4; i++)
+                        adgl->conf_end_test[i] = readb(pmem++);
+                for (i = 0; i < 2; i++)
+                        adgl->error_code[i] = readb(pmem++);
+                for (i = 0; i < 4; i++)
+                        adgl->parameter_error[i] = readb(pmem++);
+                pmem = apbs[IndexCard].RamIO + VERS;
+                adgl->vers = readb(pmem);
+                pmem = apbs[IndexCard].RamIO + TYPE_CARD;
+                for (i = 0; i < 20; i++)
+                        adgl->reserv1[i] = readb(pmem++);
+                *(int *)&adgl->reserv1[20] =  
+                        (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER) << 16) + 
+                        (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 1) << 8) + 
+                        (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 2) );
+
+                if (copy_to_user(argp, adgl, sizeof(struct st_ram_io)))
+                        ret = -EFAULT;
+                break;
+        case 2:
+                pmem = apbs[IndexCard].RamIO + CONF_END_TEST;
+                for (i = 0; i < 10; i++)
+                        writeb(0xff, pmem++);
+                writeb(adgl->data_from_pc_ready, 
+                       apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
+
+                writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
+                
+                for (i = 0; i < MAX_BOARD; i++) {
+                        if (apbs[i].RamIO) {
+                                byte_reset_it = readb(apbs[i].RamIO + RAM_IT_TO_PC);
+                        }
+                }
+                break;
+        case 3:
+                pmem = apbs[IndexCard].RamIO + TIC_DES_FROM_PC;
+                writeb(adgl->tic_des_from_pc, pmem);
+                break;
+        case 4:
+                pmem = apbs[IndexCard].RamIO + TIC_OWNER_TO_PC;
+                adgl->tic_owner_to_pc     = readb(pmem++);
+                adgl->numcard_owner_to_pc = readb(pmem);
+                if (copy_to_user(argp, adgl,sizeof(struct st_ram_io)))
+                        ret = -EFAULT;
+                break;
+        case 5:
+                writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC);
+                writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC);
+                writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC);
+                writeb(4, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
+                writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
+                break;
+        case 6:
+                printk(KERN_INFO "APPLICOM driver release .... V2.8.0 ($Revision: 1.30 $)\n");
+                printk(KERN_INFO "Number of installed boards . %d\n", (int) numboards);
+                printk(KERN_INFO "Segment of board ........... %X\n", (int) mem);
+                printk(KERN_INFO "Interrupt IRQ number ....... %d\n", (int) irq);
+                for (i = 0; i < MAX_BOARD; i++) {
+                        int serial;
+                        char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
+
+                        if (!apbs[i].RamIO)
+                                continue;
+
+                        for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++)
+                                boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial);
+                        boardname[serial] = 0;
+
+                        printk(KERN_INFO "Prom version board %d ....... V%d.%d %s",
+                               i+1,
+                               (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4),
+                               (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF),
+                               boardname);
+
+
+                        serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + 
+                                (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + 
+                                (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) );
+
+                        if (serial != 0)
+                                printk(" S/N %d\n", serial);
+                        else
+                                printk("\n");
+                }
+                if (DeviceErrorCount != 0)
+                        printk(KERN_INFO "DeviceErrorCount ........... %d\n", DeviceErrorCount);
+                if (ReadErrorCount != 0)
+                        printk(KERN_INFO "ReadErrorCount ............. %d\n", ReadErrorCount);
+                if (WriteErrorCount != 0)
+                        printk(KERN_INFO "WriteErrorCount ............ %d\n", WriteErrorCount);
+                if (waitqueue_active(&FlagSleepRec))
+                        printk(KERN_INFO "Process in read pending\n");
+                for (i = 0; i < MAX_BOARD; i++) {
+                        if (apbs[i].RamIO && waitqueue_active(&apbs[i].FlagSleepSend))
+                                printk(KERN_INFO "Process in write pending board %d\n",i+1);
+                }
+                break;
+        default:
+                printk(KERN_INFO "APPLICOM driver ioctl, unknown function code %d\n",cmd) ;
+                ret = -EINVAL;
+                break;
+        }
+        Dummy = readb(apbs[IndexCard].RamIO + VERS);
+        kfree(adgl);
+        return 0;
+}
+
+#ifndef MODULE
+static int __init applicom_setup(char *str)
+{
+        int ints[4];
+
+        (void) get_options(str, 4, ints);
+
+        if (ints[0] > 2) {
+                printk(KERN_WARNING "Too many arguments to 'applicom=', expected mem,irq only.\n");
+        }
+
+        if (ints[0] < 2) {
+                printk(KERN_INFO"applicom numargs: %d\n", ints[0]);
+                return 0;
+        }
+
+        mem = ints[1];
+        irq = ints[2];
+        return 1;
+}
+
+__setup("applicom=", applicom_setup);
+
+#endif                          /* MODULE */
+