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852 lines
24 KiB
852 lines
24 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* Derived from Applicom driver ac.c for SCO Unix */ |
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/* Ported by David Woodhouse, Axiom (Cambridge) Ltd. */ |
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/* [email protected] 30/8/98 */ |
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/* $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $ */ |
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/* This module is for Linux 2.1 and 2.2 series kernels. */ |
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/*****************************************************************************/ |
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/* J PAGET 18/02/94 passage V2.4.2 ioctl avec code 2 reset to les interrupt */ |
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/* ceci pour reseter correctement apres une sortie sauvage */ |
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/* J PAGET 02/05/94 passage V2.4.3 dans le traitement de d'interruption, */ |
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/* LoopCount n'etait pas initialise a 0. */ |
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/* F LAFORSE 04/07/95 version V2.6.0 lecture bidon apres acces a une carte */ |
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/* pour liberer le bus */ |
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/* J.PAGET 19/11/95 version V2.6.1 Nombre, addresse,irq n'est plus configure */ |
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/* et passe en argument a acinit, mais est scrute sur le bus pour s'adapter */ |
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/* au nombre de cartes presentes sur le bus. IOCL code 6 affichait V2.4.3 */ |
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/* F.LAFORSE 28/11/95 creation de fichiers acXX.o avec les differentes */ |
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/* addresses de base des cartes, IOCTL 6 plus complet */ |
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/* J.PAGET le 19/08/96 copie de la version V2.6 en V2.8.0 sans modification */ |
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/* de code autre que le texte V2.6.1 en V2.8.0 */ |
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/*****************************************************************************/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/interrupt.h> |
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#include <linux/sched/signal.h> |
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#include <linux/slab.h> |
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#include <linux/errno.h> |
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#include <linux/mutex.h> |
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#include <linux/miscdevice.h> |
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#include <linux/pci.h> |
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#include <linux/wait.h> |
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#include <linux/init.h> |
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#include <linux/fs.h> |
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#include <linux/nospec.h> |
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#include <asm/io.h> |
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#include <linux/uaccess.h> |
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#include "applicom.h" |
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/* NOTE: We use for loops with {write,read}b() instead of |
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memcpy_{from,to}io throughout this driver. This is because |
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the board doesn't correctly handle word accesses - only |
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bytes. |
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*/ |
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#undef DEBUG |
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|
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#define MAX_BOARD 8 /* maximum of pc board possible */ |
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#define MAX_ISA_BOARD 4 |
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#define LEN_RAM_IO 0x800 |
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#ifndef PCI_VENDOR_ID_APPLICOM |
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#define PCI_VENDOR_ID_APPLICOM 0x1389 |
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#define PCI_DEVICE_ID_APPLICOM_PCIGENERIC 0x0001 |
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#define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN 0x0002 |
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#define PCI_DEVICE_ID_APPLICOM_PCI2000PFB 0x0003 |
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#endif |
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|
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static DEFINE_MUTEX(ac_mutex); |
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static char *applicom_pci_devnames[] = { |
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"PCI board", |
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"PCI2000IBS / PCI2000CAN", |
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"PCI2000PFB" |
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}; |
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static const struct pci_device_id applicom_pci_tbl[] = { |
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{ PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC) }, |
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{ PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN) }, |
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{ PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB) }, |
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{ 0 } |
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}; |
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MODULE_DEVICE_TABLE(pci, applicom_pci_tbl); |
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MODULE_AUTHOR("David Woodhouse & Applicom International"); |
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MODULE_DESCRIPTION("Driver for Applicom Profibus card"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS_MISCDEV(AC_MINOR); |
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|
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static struct applicom_board { |
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unsigned long PhysIO; |
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void __iomem *RamIO; |
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wait_queue_head_t FlagSleepSend; |
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long irq; |
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spinlock_t mutex; |
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} apbs[MAX_BOARD]; |
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static unsigned int irq = 0; /* interrupt number IRQ */ |
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static unsigned long mem = 0; /* physical segment of board */ |
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module_param_hw(irq, uint, irq, 0); |
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MODULE_PARM_DESC(irq, "IRQ of the Applicom board"); |
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module_param_hw(mem, ulong, iomem, 0); |
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MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board"); |
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|
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static unsigned int numboards; /* number of installed boards */ |
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static volatile unsigned char Dummy; |
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static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec); |
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static unsigned int WriteErrorCount; /* number of write error */ |
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static unsigned int ReadErrorCount; /* number of read error */ |
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static unsigned int DeviceErrorCount; /* number of device error */ |
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static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *); |
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static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *); |
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static long ac_ioctl(struct file *, unsigned int, unsigned long); |
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static irqreturn_t ac_interrupt(int, void *); |
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static const struct file_operations ac_fops = { |
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.owner = THIS_MODULE, |
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.llseek = no_llseek, |
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.read = ac_read, |
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.write = ac_write, |
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.unlocked_ioctl = ac_ioctl, |
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}; |
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static struct miscdevice ac_miscdev = { |
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AC_MINOR, |
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"ac", |
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&ac_fops |
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}; |
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static int dummy; /* dev_id for request_irq() */ |
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static int ac_register_board(unsigned long physloc, void __iomem *loc, |
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unsigned char boardno) |
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{ |
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volatile unsigned char byte_reset_it; |
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if((readb(loc + CONF_END_TEST) != 0x00) || |
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(readb(loc + CONF_END_TEST + 1) != 0x55) || |
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(readb(loc + CONF_END_TEST + 2) != 0xAA) || |
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(readb(loc + CONF_END_TEST + 3) != 0xFF)) |
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return 0; |
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if (!boardno) |
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boardno = readb(loc + NUMCARD_OWNER_TO_PC); |
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if (!boardno || boardno > MAX_BOARD) { |
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printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).\n", |
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boardno, physloc, MAX_BOARD); |
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return 0; |
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} |
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if (apbs[boardno - 1].RamIO) { |
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printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)\n", |
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boardno, physloc, boardno, apbs[boardno-1].PhysIO); |
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return 0; |
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} |
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boardno--; |
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apbs[boardno].PhysIO = physloc; |
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apbs[boardno].RamIO = loc; |
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init_waitqueue_head(&apbs[boardno].FlagSleepSend); |
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spin_lock_init(&apbs[boardno].mutex); |
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byte_reset_it = readb(loc + RAM_IT_TO_PC); |
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numboards++; |
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return boardno + 1; |
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} |
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static void __exit applicom_exit(void) |
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{ |
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unsigned int i; |
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misc_deregister(&ac_miscdev); |
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for (i = 0; i < MAX_BOARD; i++) { |
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if (!apbs[i].RamIO) |
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continue; |
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if (apbs[i].irq) |
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free_irq(apbs[i].irq, &dummy); |
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iounmap(apbs[i].RamIO); |
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} |
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} |
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static int __init applicom_init(void) |
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{ |
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int i, numisa = 0; |
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struct pci_dev *dev = NULL; |
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void __iomem *RamIO; |
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int boardno, ret; |
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printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $\n"); |
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/* No mem and irq given - check for a PCI card */ |
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while ( (dev = pci_get_class(PCI_CLASS_OTHERS << 16, dev))) { |
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if (!pci_match_id(applicom_pci_tbl, dev)) |
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continue; |
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if (pci_enable_device(dev)) |
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return -EIO; |
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RamIO = ioremap(pci_resource_start(dev, 0), LEN_RAM_IO); |
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if (!RamIO) { |
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printk(KERN_INFO "ac.o: Failed to ioremap PCI memory " |
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"space at 0x%llx\n", |
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(unsigned long long)pci_resource_start(dev, 0)); |
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pci_disable_device(dev); |
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return -EIO; |
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} |
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printk(KERN_INFO "Applicom %s found at mem 0x%llx, irq %d\n", |
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applicom_pci_devnames[dev->device-1], |
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(unsigned long long)pci_resource_start(dev, 0), |
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dev->irq); |
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boardno = ac_register_board(pci_resource_start(dev, 0), |
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RamIO, 0); |
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if (!boardno) { |
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printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.\n"); |
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iounmap(RamIO); |
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pci_disable_device(dev); |
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continue; |
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} |
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if (request_irq(dev->irq, &ac_interrupt, IRQF_SHARED, "Applicom PCI", &dummy)) { |
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printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.\n", dev->irq); |
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iounmap(RamIO); |
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pci_disable_device(dev); |
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apbs[boardno - 1].RamIO = NULL; |
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continue; |
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} |
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/* Enable interrupts. */ |
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writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC); |
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apbs[boardno - 1].irq = dev->irq; |
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} |
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/* Finished with PCI cards. If none registered, |
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* and there was no mem/irq specified, exit */ |
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if (!mem || !irq) { |
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if (numboards) |
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goto fin; |
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else { |
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printk(KERN_INFO "ac.o: No PCI boards found.\n"); |
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printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.\n"); |
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return -ENXIO; |
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} |
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} |
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/* Now try the specified ISA cards */ |
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for (i = 0; i < MAX_ISA_BOARD; i++) { |
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RamIO = ioremap(mem + (LEN_RAM_IO * i), LEN_RAM_IO); |
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if (!RamIO) { |
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printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)\n", i + 1); |
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continue; |
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} |
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if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i), |
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RamIO,i+1))) { |
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iounmap(RamIO); |
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continue; |
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} |
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printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %d\n", mem + (LEN_RAM_IO*i), irq); |
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if (!numisa) { |
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if (request_irq(irq, &ac_interrupt, IRQF_SHARED, "Applicom ISA", &dummy)) { |
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printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.\n", irq); |
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iounmap(RamIO); |
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apbs[boardno - 1].RamIO = NULL; |
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} |
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else |
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apbs[boardno - 1].irq = irq; |
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} |
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else |
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apbs[boardno - 1].irq = 0; |
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numisa++; |
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} |
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if (!numisa) |
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printk(KERN_WARNING "ac.o: No valid ISA Applicom boards found " |
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"at mem 0x%lx\n", mem); |
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fin: |
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init_waitqueue_head(&FlagSleepRec); |
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WriteErrorCount = 0; |
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ReadErrorCount = 0; |
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DeviceErrorCount = 0; |
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if (numboards) { |
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ret = misc_register(&ac_miscdev); |
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if (ret) { |
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printk(KERN_WARNING "ac.o: Unable to register misc device\n"); |
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goto out; |
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} |
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for (i = 0; i < MAX_BOARD; i++) { |
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int serial; |
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char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; |
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if (!apbs[i].RamIO) |
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continue; |
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for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) |
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boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); |
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boardname[serial] = 0; |
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printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d", |
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i+1, boardname, |
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(int)(readb(apbs[i].RamIO + VERS) >> 4), |
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(int)(readb(apbs[i].RamIO + VERS) & 0xF)); |
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serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + |
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(readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + |
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(readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); |
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if (serial != 0) |
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printk(" S/N %d\n", serial); |
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else |
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printk("\n"); |
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} |
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return 0; |
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} |
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else |
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return -ENXIO; |
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out: |
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for (i = 0; i < MAX_BOARD; i++) { |
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if (!apbs[i].RamIO) |
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continue; |
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if (apbs[i].irq) |
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free_irq(apbs[i].irq, &dummy); |
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iounmap(apbs[i].RamIO); |
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} |
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return ret; |
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} |
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module_init(applicom_init); |
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module_exit(applicom_exit); |
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static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos) |
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{ |
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unsigned int NumCard; /* Board number 1 -> 8 */ |
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unsigned int IndexCard; /* Index board number 0 -> 7 */ |
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unsigned char TicCard; /* Board TIC to send */ |
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unsigned long flags; /* Current priority */ |
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struct st_ram_io st_loc; |
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struct mailbox tmpmailbox; |
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#ifdef DEBUG |
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int c; |
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#endif |
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DECLARE_WAITQUEUE(wait, current); |
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if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { |
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static int warncount = 5; |
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if (warncount) { |
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printk(KERN_INFO "Hmmm. write() of Applicom card, length %zd != expected %zd\n", |
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count, sizeof(struct st_ram_io) + sizeof(struct mailbox)); |
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warncount--; |
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} |
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return -EINVAL; |
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} |
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if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io))) |
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return -EFAULT; |
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if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)], |
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sizeof(struct mailbox))) |
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return -EFAULT; |
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NumCard = st_loc.num_card; /* board number to send */ |
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TicCard = st_loc.tic_des_from_pc; /* tic number to send */ |
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IndexCard = NumCard - 1; |
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if (IndexCard >= MAX_BOARD) |
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return -EINVAL; |
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IndexCard = array_index_nospec(IndexCard, MAX_BOARD); |
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if (!apbs[IndexCard].RamIO) |
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return -EINVAL; |
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#ifdef DEBUG |
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printk("Write to applicom card #%d. struct st_ram_io follows:", |
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IndexCard+1); |
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for (c = 0; c < sizeof(struct st_ram_io);) { |
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printk("\n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]); |
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for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { |
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printk(" %2.2X", ((unsigned char *) &st_loc)[c]); |
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} |
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} |
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printk("\nstruct mailbox follows:"); |
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for (c = 0; c < sizeof(struct mailbox);) { |
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printk("\n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]); |
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for (c++; c % 8 && c < sizeof(struct mailbox); c++) { |
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printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]); |
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} |
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} |
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printk("\n"); |
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#endif |
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spin_lock_irqsave(&apbs[IndexCard].mutex, flags); |
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/* Test octet ready correct */ |
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if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) { |
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Dummy = readb(apbs[IndexCard].RamIO + VERS); |
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spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); |
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printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %d\n", |
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IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY)); |
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DeviceErrorCount++; |
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return -EIO; |
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} |
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/* Place ourselves on the wait queue */ |
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set_current_state(TASK_INTERRUPTIBLE); |
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add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); |
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/* Check whether the card is ready for us */ |
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while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) { |
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Dummy = readb(apbs[IndexCard].RamIO + VERS); |
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/* It's busy. Sleep. */ |
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spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); |
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schedule(); |
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if (signal_pending(current)) { |
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remove_wait_queue(&apbs[IndexCard].FlagSleepSend, |
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&wait); |
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return -EINTR; |
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} |
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spin_lock_irqsave(&apbs[IndexCard].mutex, flags); |
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set_current_state(TASK_INTERRUPTIBLE); |
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} |
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/* We may not have actually slept */ |
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set_current_state(TASK_RUNNING); |
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remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); |
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writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); |
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/* Which is best - lock down the pages with rawio and then |
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copy directly, or use bounce buffers? For now we do the latter |
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because it works with 2.2 still */ |
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{ |
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unsigned char *from = (unsigned char *) &tmpmailbox; |
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void __iomem *to = apbs[IndexCard].RamIO + RAM_FROM_PC; |
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int c; |
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for (c = 0; c < sizeof(struct mailbox); c++) |
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writeb(*(from++), to++); |
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} |
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writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC); |
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writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC); |
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writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC); |
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writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); |
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writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); |
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writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); |
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Dummy = readb(apbs[IndexCard].RamIO + VERS); |
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spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); |
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return 0; |
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} |
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static int do_ac_read(int IndexCard, char __user *buf, |
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struct st_ram_io *st_loc, struct mailbox *mailbox) |
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{ |
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void __iomem *from = apbs[IndexCard].RamIO + RAM_TO_PC; |
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unsigned char *to = (unsigned char *)mailbox; |
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#ifdef DEBUG |
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int c; |
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#endif |
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st_loc->tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC); |
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st_loc->numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); |
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{ |
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int c; |
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for (c = 0; c < sizeof(struct mailbox); c++) |
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*(to++) = readb(from++); |
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} |
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writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); |
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writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC); |
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writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); |
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writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC), |
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apbs[IndexCard].RamIO + TIC_ACK_FROM_PC); |
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writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); |
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writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY); |
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writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); |
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Dummy = readb(apbs[IndexCard].RamIO + VERS); |
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|
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#ifdef DEBUG |
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printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard); |
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|
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for (c = 0; c < sizeof(struct st_ram_io);) { |
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printk("\n%5.5X: %2.2X", c, ((unsigned char *)st_loc)[c]); |
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|
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for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { |
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printk(" %2.2X", ((unsigned char *)st_loc)[c]); |
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} |
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} |
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printk("\nstruct mailbox follows:"); |
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|
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for (c = 0; c < sizeof(struct mailbox);) { |
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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; |
|
|
|
} |
|
|
|
|