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Diffstat (limited to '')
| -rw-r--r-- | drivers/char/applicom.c | 855 |
1 files changed, 855 insertions, 0 deletions
diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c new file mode 100644 index 000000000..14b2d8034 --- /dev/null +++ b/drivers/char/applicom.c @@ -0,0 +1,855 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* 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/signal.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 <linux/nospec.h> + +#include <asm/io.h> +#include <linux/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 + +#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 const 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_hw(irq, uint, irq, 0); +MODULE_PARM_DESC(irq, "IRQ of the Applicom board"); +module_param_hw(mem, ulong, iomem, 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(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(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 (IndexCard >= MAX_BOARD) + return -EINVAL; + IndexCard = array_index_nospec(IndexCard, MAX_BOARD); + + if (!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; + static int warncount = 10; + 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) + goto err; + IndexCard = array_index_nospec(IndexCard, MAX_BOARD); + + if (cmd != 6 && !apbs[IndexCard].RamIO) + goto err; + + 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; + +err: + if (warncount) { + pr_warn("APPLICOM driver IOCTL, bad board number %d\n", + (int)IndexCard + 1); + warncount--; + } + kfree(adgl); + mutex_unlock(&ac_mutex); + return -EINVAL; + +} + |