Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Linus Torvalds (pre-git) | 4220 | 87.90% | 8 | 16.33% |
Andrew Morton | 137 | 2.85% | 5 | 10.20% |
Gustavo A. R. Silva | 87 | 1.81% | 1 | 2.04% |
Christophe Lucas | 85 | 1.77% | 1 | 2.04% |
Linus Torvalds | 60 | 1.25% | 4 | 8.16% |
Al Viro | 53 | 1.10% | 2 | 4.08% |
Jiri Slaby | 40 | 0.83% | 2 | 4.08% |
Arnd Bergmann | 24 | 0.50% | 2 | 4.08% |
Greg Kroah-Hartman | 14 | 0.29% | 2 | 4.08% |
Vasiliy Kulikov | 13 | 0.27% | 1 | 2.04% |
Art Haas | 10 | 0.21% | 1 | 2.04% |
Adrian Bunk | 10 | 0.21% | 1 | 2.04% |
Arnaldo Carvalho de Melo | 9 | 0.19% | 1 | 2.04% |
David Howells | 6 | 0.12% | 1 | 2.04% |
Julia Lawall | 6 | 0.12% | 1 | 2.04% |
Scott James Remnant | 5 | 0.10% | 1 | 2.04% |
Alan Cox | 5 | 0.10% | 2 | 4.08% |
Thomas Gleixner | 3 | 0.06% | 2 | 4.08% |
Alexey Dobriyan | 2 | 0.04% | 1 | 2.04% |
Dan Carpenter | 2 | 0.04% | 1 | 2.04% |
Christoph Hellwig | 2 | 0.04% | 1 | 2.04% |
Ingo Molnar | 1 | 0.02% | 1 | 2.04% |
Daniel Mack | 1 | 0.02% | 1 | 2.04% |
David Woodhouse | 1 | 0.02% | 1 | 2.04% |
Domen Puncer | 1 | 0.02% | 1 | 2.04% |
Arvind Yadav | 1 | 0.02% | 1 | 2.04% |
Xu Jia | 1 | 0.02% | 1 | 2.04% |
Arjan van de Ven | 1 | 0.02% | 1 | 2.04% |
Eric Sesterhenn / Snakebyte | 1 | 0.02% | 1 | 2.04% |
Total | 4801 | 49 |
// 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); 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; /* interrupt number IRQ */ static unsigned long mem; /* 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 ret; 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; }
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