// SPDX-License-Identifier: GPL-2.0-only /* Derived from Applicom driver ac.c for SCO Unix */ /* Ported by David Woodhouse, Axiom (Cambridge) Ltd. */ /* [email protected] 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 … #define MAX_ISA_BOARD … #define LEN_RAM_IO … #ifndef PCI_VENDOR_ID_APPLICOM #define PCI_VENDOR_ID_APPLICOM … #define PCI_DEVICE_ID_APPLICOM_PCIGENERIC … #define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN … #define PCI_DEVICE_ID_APPLICOM_PCI2000PFB … #endif static DEFINE_MUTEX(ac_mutex); static char *applicom_pci_devnames[] = …; static const struct pci_device_id applicom_pci_tbl[] = …; MODULE_DEVICE_TABLE(pci, applicom_pci_tbl); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS_MISCDEV(…); static struct applicom_board { … } 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(…) …; module_param_hw(mem, ulong, iomem, 0); MODULE_PARM_DESC(…) …; 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 = …; static struct miscdevice ac_miscdev = …; static int dummy; /* dev_id for request_irq() */ static int ac_register_board(unsigned long physloc, void __iomem *loc, unsigned char boardno) { … } static void __exit applicom_exit(void) { … } static int __init applicom_init(void) { … } module_init(…) …; module_exit(applicom_exit); static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos) { … } static int do_ac_read(int IndexCard, char __user *buf, struct st_ram_io *st_loc, struct mailbox *mailbox) { … } static ssize_t ac_read (struct file *filp, char __user *buf, size_t count, loff_t *ptr) { … } static irqreturn_t ac_interrupt(int vec, void *dev_instance) { … } static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { … }
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