Date: Mon, 26 Dec 2016 01:18:08 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r310559 - in head/sys/compat/linuxkpi/common: include/linux src Message-ID: <201612260118.uBQ1I8Dm015288@repo.freebsd.org>
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Author: hselasky Date: Mon Dec 26 01:18:07 2016 New Revision: 310559 URL: https://svnweb.freebsd.org/changeset/base/310559 Log: Implement register and unregister chrdev in the LinuxKPI. Obtained from: kmacy @ MFC after: 1 week Sponsored by: Mellanox Technologies Modified: head/sys/compat/linuxkpi/common/include/linux/cdev.h head/sys/compat/linuxkpi/common/include/linux/fs.h head/sys/compat/linuxkpi/common/src/linux_compat.c Modified: head/sys/compat/linuxkpi/common/include/linux/cdev.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/cdev.h Sun Dec 25 22:32:16 2016 (r310558) +++ head/sys/compat/linuxkpi/common/include/linux/cdev.h Mon Dec 26 01:18:07 2016 (r310559) @@ -95,7 +95,7 @@ cdev_add(struct linux_cdev *cdev, dev_t args.mda_gid = 0; args.mda_mode = 0700; args.mda_si_drv1 = cdev; - args.mda_unit = MINOR(dev); + args.mda_unit = dev; error = make_dev_s(&args, &cdev->cdev, "%s", kobject_name(&cdev->kobj)); @@ -121,7 +121,7 @@ cdev_add_ext(struct linux_cdev *cdev, de args.mda_gid = gid; args.mda_mode = mode; args.mda_si_drv1 = cdev; - args.mda_unit = MINOR(dev); + args.mda_unit = dev; error = make_dev_s(&args, &cdev->cdev, "%s/%d", kobject_name(&cdev->kobj), MINOR(dev)); @@ -142,6 +142,8 @@ cdev_del(struct linux_cdev *cdev) kobject_put(&cdev->kobj); } +struct linux_cdev *linux_find_cdev(const char *name, unsigned major, unsigned minor); + #define cdev linux_cdev #endif /* _LINUX_CDEV_H_ */ Modified: head/sys/compat/linuxkpi/common/include/linux/fs.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/fs.h Sun Dec 25 22:32:16 2016 (r310558) +++ head/sys/compat/linuxkpi/common/include/linux/fs.h Mon Dec 26 01:18:07 2016 (r310559) @@ -2,7 +2,7 @@ * Copyright (c) 2010 Isilon Systems, Inc. * Copyright (c) 2010 iX Systems, Inc. * Copyright (c) 2010 Panasas, Inc. - * Copyright (c) 2013 Mellanox Technologies, Ltd. + * Copyright (c) 2013-2016 Mellanox Technologies, Ltd. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -151,6 +151,39 @@ struct file_operations { #define FMODE_WRITE FWRITE #define FMODE_EXEC FEXEC +int __register_chrdev(unsigned int major, unsigned int baseminor, + unsigned int count, const char *name, + const struct file_operations *fops); +int __register_chrdev_p(unsigned int major, unsigned int baseminor, + unsigned int count, const char *name, + const struct file_operations *fops, uid_t uid, + gid_t gid, int mode); +void __unregister_chrdev(unsigned int major, unsigned int baseminor, + unsigned int count, const char *name); + +static inline void +unregister_chrdev(unsigned int major, const char *name) +{ + + __unregister_chrdev(major, 0, 256, name); +} + +static inline int +register_chrdev(unsigned int major, const char *name, + const struct file_operations *fops) +{ + + return (__register_chrdev(major, 0, 256, name, fops)); +} + +static inline int +register_chrdev_p(unsigned int major, const char *name, + const struct file_operations *fops, uid_t uid, gid_t gid, int mode) +{ + + return (__register_chrdev_p(major, 0, 256, name, fops, uid, gid, mode)); +} + static inline int register_chrdev_region(dev_t dev, unsigned range, const char *name) { @@ -184,7 +217,7 @@ static inline dev_t iminor(struct inode *inode) { - return dev2unit(inode->v_rdev); + return (MINOR(dev2unit(inode->v_rdev))); } static inline struct inode * Modified: head/sys/compat/linuxkpi/common/src/linux_compat.c ============================================================================== --- head/sys/compat/linuxkpi/common/src/linux_compat.c Sun Dec 25 22:32:16 2016 (r310558) +++ head/sys/compat/linuxkpi/common/src/linux_compat.c Mon Dec 26 01:18:07 2016 (r310559) @@ -1418,6 +1418,82 @@ linux_irq_handler(void *ent) irqe->handler(irqe->irq, irqe->arg); } +struct linux_cdev * +linux_find_cdev(const char *name, unsigned major, unsigned minor) +{ + int unit = MKDEV(major, minor); + struct cdev *cdev; + + dev_lock(); + LIST_FOREACH(cdev, &linuxcdevsw.d_devs, si_list) { + struct linux_cdev *ldev = cdev->si_drv1; + if (dev2unit(cdev) == unit && + strcmp(kobject_name(&ldev->kobj), name) == 0) { + break; + } + } + dev_unlock(); + + return (cdev != NULL ? cdev->si_drv1 : NULL); +} + +int +__register_chrdev(unsigned int major, unsigned int baseminor, + unsigned int count, const char *name, + const struct file_operations *fops) +{ + struct linux_cdev *cdev; + int ret = 0; + int i; + + for (i = baseminor; i < baseminor + count; i++) { + cdev = cdev_alloc(); + cdev_init(cdev, fops); + kobject_set_name(&cdev->kobj, name); + + ret = cdev_add(cdev, makedev(major, i), 1); + if (ret != 0) + break; + } + return (ret); +} + +int +__register_chrdev_p(unsigned int major, unsigned int baseminor, + unsigned int count, const char *name, + const struct file_operations *fops, uid_t uid, + gid_t gid, int mode) +{ + struct linux_cdev *cdev; + int ret = 0; + int i; + + for (i = baseminor; i < baseminor + count; i++) { + cdev = cdev_alloc(); + cdev_init(cdev, fops); + kobject_set_name(&cdev->kobj, name); + + ret = cdev_add_ext(cdev, makedev(major, i), uid, gid, mode); + if (ret != 0) + break; + } + return (ret); +} + +void +__unregister_chrdev(unsigned int major, unsigned int baseminor, + unsigned int count, const char *name) +{ + struct linux_cdev *cdevp; + int i; + + for (i = baseminor; i < baseminor + count; i++) { + cdevp = linux_find_cdev(name, major, i); + if (cdevp != NULL) + cdev_del(cdevp); + } +} + #if defined(__i386__) || defined(__amd64__) bool linux_cpu_has_clflush; #endif
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