--- /dev/null
+/* 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 */
+/* addresses 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/sched.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/mutex.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
+
+static DEFINE_MUTEX(ac_mutex);
+static char *applicom_pci_devnames[] = {
+ "PCI board",
+ "PCI2000IBS / PCI2000CAN",
+ "PCI2000PFB"
+};
+
+static struct pci_device_id applicom_pci_tbl[] = {
+ { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC) },
+ { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN) },
+ { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB) },
+ { 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_ALIAS_MISCDEV(AC_MINOR);
+
+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 long ac_ioctl(struct file *, unsigned int, unsigned long);
+static irqreturn_t ac_interrupt(int, void *);
+
+static const struct file_operations ac_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = ac_read,
+ .write = ac_write,
+ .unlocked_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;
+}
+
+static void __exit applicom_exit(void)
+{
+ unsigned 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);
+ }
+}
+
+static int __init applicom_init(void)
+{
+ int i, numisa = 0;
+ struct pci_dev *dev = NULL;
+ void __iomem *RamIO;
+ int boardno, ret;
+
+ 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 (!pci_match_id(applicom_pci_tbl, dev))
+ continue;
+
+ if (pci_enable_device(dev))
+ return -EIO;
+
+ RamIO = ioremap_nocache(pci_resource_start(dev, 0), LEN_RAM_IO);
+
+ if (!RamIO) {
+ printk(KERN_INFO "ac.o: Failed to ioremap PCI memory "
+ "space at 0x%llx\n",
+ (unsigned long long)pci_resource_start(dev, 0));
+ pci_disable_device(dev);
+ return -EIO;
+ }
+
+ printk(KERN_INFO "Applicom %s found at mem 0x%llx, irq %d\n",
+ applicom_pci_devnames[dev->device-1],
+ (unsigned long long)pci_resource_start(dev, 0),
+ dev->irq);
+
+ boardno = ac_register_board(pci_resource_start(dev, 0),
+ 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, IRQF_SHARED, "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_nocache(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, IRQF_SHARED, "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) {
+ ret = misc_register(&ac_miscdev);
+ if (ret) {
+ printk(KERN_WARNING "ac.o: Unable to register misc device\n");
+ goto out;
+ }
+ 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;
+
+out:
+ 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);
+ }
+ return ret;
+}
+
+module_init(applicom_init);
+module_exit(applicom_exit);
+
+
+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 */
+ memset(&st_loc, 0, sizeof(st_loc));
+ 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(KERN_DEBUG "Looping in ac_read. loopcount %d\n", loopcount);
+ }
+#endif
+ }
+}
+
+static irqreturn_t ac_interrupt(int vec, void *dev_instance)
+{
+ 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 long ac_ioctl(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 = memdup_user(argp, sizeof(struct st_ram_io));
+ if (IS_ERR(adgl))
+ return PTR_ERR(adgl);
+
+ mutex_lock(&ac_mutex);
+ IndexCard = adgl->num_card-1;
+
+ if(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);
+ mutex_unlock(&ac_mutex);
+ 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[i].RamIO + VERS) >> 4),
+ (int)(readb(apbs[i].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:
+ ret = -ENOTTY;
+ break;
+ }
+ Dummy = readb(apbs[IndexCard].RamIO + VERS);
+ kfree(adgl);
+ mutex_unlock(&ac_mutex);
+ return 0;
+}
+
Code Review / kvmfornfv.git / blobdiff