mirror of
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381 lines
9.8 KiB
C
381 lines
9.8 KiB
C
#ifndef _BSD_COMPAT_H_
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#define _BSD_COMPAT_H_ 1
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/****************************************************************************/
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/*
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* Provide compat routines for older linux kernels and BSD kernels
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*
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* Written by David McCullough <david_mccullough@mcafee.com>
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* Copyright (C) 2010 David McCullough <david_mccullough@mcafee.com>
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*
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* LICENSE TERMS
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*
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* The free distribution and use of this software in both source and binary
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* form is allowed (with or without changes) provided that:
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*
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* 1. distributions of this source code include the above copyright
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* notice, this list of conditions and the following disclaimer;
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*
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* 2. distributions in binary form include the above copyright
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* notice, this list of conditions and the following disclaimer
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* in the documentation and/or other associated materials;
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*
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* 3. the copyright holder's name is not used to endorse products
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* built using this software without specific written permission.
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*
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* ALTERNATIVELY, provided that this notice is retained in full, this file
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* may be distributed under the terms of the GNU General Public License (GPL),
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* in which case the provisions of the GPL apply INSTEAD OF those given above.
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*
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* DISCLAIMER
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*
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* This software is provided 'as is' with no explicit or implied warranties
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* in respect of its properties, including, but not limited to, correctness
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* and/or fitness for purpose.
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*/
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/****************************************************************************/
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#ifdef __KERNEL__
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#include <linux/version.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) && !defined(AUTOCONF_INCLUDED)
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#include <linux/config.h>
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#endif
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/*
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* fake some BSD driver interface stuff specifically for OCF use
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*/
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typedef struct ocf_device *device_t;
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typedef struct {
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int (*cryptodev_newsession)(device_t dev, u_int32_t *sidp, struct cryptoini *cri);
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int (*cryptodev_freesession)(device_t dev, u_int64_t tid);
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int (*cryptodev_process)(device_t dev, struct cryptop *crp, int hint);
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int (*cryptodev_kprocess)(device_t dev, struct cryptkop *krp, int hint);
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} device_method_t;
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#define DEVMETHOD(id, func) id: func
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struct ocf_device {
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char name[32]; /* the driver name */
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char nameunit[32]; /* the driver name + HW instance */
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int unit;
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device_method_t methods;
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void *softc;
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};
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#define CRYPTODEV_NEWSESSION(dev, sid, cri) \
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((*(dev)->methods.cryptodev_newsession)(dev,sid,cri))
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#define CRYPTODEV_FREESESSION(dev, sid) \
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((*(dev)->methods.cryptodev_freesession)(dev, sid))
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#define CRYPTODEV_PROCESS(dev, crp, hint) \
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((*(dev)->methods.cryptodev_process)(dev, crp, hint))
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#define CRYPTODEV_KPROCESS(dev, krp, hint) \
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((*(dev)->methods.cryptodev_kprocess)(dev, krp, hint))
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#define device_get_name(dev) ((dev)->name)
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#define device_get_nameunit(dev) ((dev)->nameunit)
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#define device_get_unit(dev) ((dev)->unit)
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#define device_get_softc(dev) ((dev)->softc)
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#define softc_device_decl \
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struct ocf_device _device; \
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device_t
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#define softc_device_init(_sc, _name, _unit, _methods) \
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if (1) {\
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strncpy((_sc)->_device.name, _name, sizeof((_sc)->_device.name) - 1); \
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snprintf((_sc)->_device.nameunit, sizeof((_sc)->_device.name), "%s%d", _name, _unit); \
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(_sc)->_device.unit = _unit; \
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(_sc)->_device.methods = _methods; \
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(_sc)->_device.softc = (void *) _sc; \
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*(device_t *)((softc_get_device(_sc))+1) = &(_sc)->_device; \
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} else
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#define softc_get_device(_sc) (&(_sc)->_device)
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/*
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* iomem support for 2.4 and 2.6 kernels
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*/
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#include <linux/version.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
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#define ocf_iomem_t unsigned long
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/*
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* implement simple workqueue like support for older kernels
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*/
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#include <linux/tqueue.h>
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#define work_struct tq_struct
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#define INIT_WORK(wp, fp, ap) \
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do { \
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(wp)->sync = 0; \
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(wp)->routine = (fp); \
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(wp)->data = (ap); \
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} while (0)
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#define schedule_work(wp) \
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do { \
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queue_task((wp), &tq_immediate); \
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mark_bh(IMMEDIATE_BH); \
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} while (0)
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#define flush_scheduled_work() run_task_queue(&tq_immediate)
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#else
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#define ocf_iomem_t void __iomem *
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#include <linux/workqueue.h>
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#endif
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
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#include <linux/fdtable.h>
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#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
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#define files_fdtable(files) (files)
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#endif
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#ifdef MODULE_PARM
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#undef module_param /* just in case */
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#define module_param(a,b,c) MODULE_PARM(a,"i")
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#endif
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#define bzero(s,l) memset(s,0,l)
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#define bcopy(s,d,l) memcpy(d,s,l)
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#define bcmp(x, y, l) memcmp(x,y,l)
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#define MIN(x,y) ((x) < (y) ? (x) : (y))
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#define device_printf(dev, a...) ({ \
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printk("%s: ", device_get_nameunit(dev)); printk(a); \
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})
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#undef printf
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#define printf(fmt...) printk(fmt)
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#define KASSERT(c,p) if (!(c)) { printk p ; } else
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
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#define ocf_daemonize(str) \
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daemonize(); \
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spin_lock_irq(¤t->sigmask_lock); \
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sigemptyset(¤t->blocked); \
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recalc_sigpending(current); \
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spin_unlock_irq(¤t->sigmask_lock); \
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sprintf(current->comm, str); \
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#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0) \
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spin_lock_irq(¤t->sigmask_lock); \
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sigemptyset(¤t->blocked); \
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recalc_sigpending(current); \
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spin_unlock_irq(¤t->sigmask_lock); \
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sprintf(current->comm, str); \
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#else
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#define ocf_daemonize(str) daemonize(str);
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#endif
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#define TAILQ_INSERT_TAIL(q,d,m) list_add_tail(&(d)->m, (q))
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#define TAILQ_EMPTY(q) list_empty(q)
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#define TAILQ_FOREACH(v, q, m) list_for_each_entry(v, q, m)
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#define read_random(p,l) get_random_bytes(p,l)
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#define DELAY(x) ((x) > 2000 ? mdelay((x)/1000) : udelay(x))
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#define strtoul simple_strtoul
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#define pci_get_vendor(dev) ((dev)->vendor)
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#define pci_get_device(dev) ((dev)->device)
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
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#define pci_set_consistent_dma_mask(dev, mask) (0)
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
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#define pci_dma_sync_single_for_cpu pci_dma_sync_single
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#endif
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#ifndef DMA_32BIT_MASK
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#define DMA_32BIT_MASK 0x00000000ffffffffULL
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#endif
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#ifndef htole32
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#define htole32(x) cpu_to_le32(x)
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#endif
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#ifndef htobe32
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#define htobe32(x) cpu_to_be32(x)
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#endif
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#ifndef htole16
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#define htole16(x) cpu_to_le16(x)
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#endif
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#ifndef htobe16
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#define htobe16(x) cpu_to_be16(x)
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#endif
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/* older kernels don't have these */
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#include <asm/irq.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
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#if !defined(IRQ_NONE) && !defined(IRQ_RETVAL)
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#define IRQ_NONE
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#define IRQ_HANDLED
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#define IRQ_WAKE_THREAD
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#define IRQ_RETVAL
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#define irqreturn_t void
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typedef irqreturn_t (*irq_handler_t)(int irq, void *arg, struct pt_regs *regs);
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#endif
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#ifndef IRQF_SHARED
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#define IRQF_SHARED SA_SHIRQ
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#endif
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
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# define strlcpy(dest,src,len) \
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({strncpy(dest,src,(len)-1); ((char *)dest)[(len)-1] = '\0'; })
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#endif
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#ifndef MAX_ERRNO
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#define MAX_ERRNO 4095
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#endif
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#ifndef IS_ERR_VALUE
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,5)
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#include <linux/err.h>
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#endif
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#ifndef IS_ERR_VALUE
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#define IS_ERR_VALUE(x) ((unsigned long)(x) >= (unsigned long)-MAX_ERRNO)
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#endif
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#endif
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/*
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* common debug for all
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*/
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#if 1
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#define dprintk(a...) do { if (debug) printk(a); } while(0)
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#else
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#define dprintk(a...)
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#endif
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#ifndef SLAB_ATOMIC
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/* Changed in 2.6.20, must use GFP_ATOMIC now */
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#define SLAB_ATOMIC GFP_ATOMIC
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#endif
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/*
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* need some additional support for older kernels */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,2)
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#define pci_register_driver_compat(driver, rc) \
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do { \
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if ((rc) > 0) { \
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(rc) = 0; \
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} else if (rc == 0) { \
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(rc) = -ENODEV; \
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} else { \
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pci_unregister_driver(driver); \
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} \
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} while (0)
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#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
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#define pci_register_driver_compat(driver,rc) ((rc) = (rc) < 0 ? (rc) : 0)
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#else
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#define pci_register_driver_compat(driver,rc)
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
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#include <linux/mm.h>
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#include <asm/scatterlist.h>
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static inline void sg_set_page(struct scatterlist *sg, struct page *page,
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unsigned int len, unsigned int offset)
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{
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sg->page = page;
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sg->offset = offset;
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sg->length = len;
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}
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static inline void *sg_virt(struct scatterlist *sg)
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{
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return page_address(sg->page) + sg->offset;
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}
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#define sg_init_table(sg, n)
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#define sg_mark_end(sg)
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#endif
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#ifndef late_initcall
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#define late_initcall(init) module_init(init)
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4) || !defined(CONFIG_SMP)
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#define ocf_for_each_cpu(cpu) for ((cpu) = 0; (cpu) == 0; (cpu)++)
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#else
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#define ocf_for_each_cpu(cpu) for_each_present_cpu(cpu)
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#endif
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
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#include <linux/sched.h>
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#define kill_proc(p,s,v) send_sig(s,find_task_by_vpid(p),0)
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4)
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struct ocf_thread {
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struct task_struct *task;
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int (*func)(void *arg);
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void *arg;
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};
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/* thread startup helper func */
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static inline int ocf_run_thread(void *arg)
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{
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struct ocf_thread *t = (struct ocf_thread *) arg;
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if (!t)
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return -1; /* very bad */
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t->task = current;
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daemonize();
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spin_lock_irq(¤t->sigmask_lock);
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sigemptyset(¤t->blocked);
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recalc_sigpending(current);
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spin_unlock_irq(¤t->sigmask_lock);
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return (*t->func)(t->arg);
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}
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#define kthread_create(f,a,fmt...) \
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({ \
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struct ocf_thread t; \
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pid_t p; \
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t.task = NULL; \
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t.func = (f); \
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t.arg = (a); \
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p = kernel_thread(ocf_run_thread, &t, CLONE_FS|CLONE_FILES); \
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while (p != (pid_t) -1 && t.task == NULL) \
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schedule(); \
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if (t.task) \
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snprintf(t.task->comm, sizeof(t.task->comm), fmt); \
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(t.task); \
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})
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#define kthread_bind(t,cpu) /**/
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#define kthread_should_stop() (strcmp(current->comm, "stopping") == 0)
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#define kthread_stop(t) \
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({ \
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strcpy((t)->comm, "stopping"); \
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kill_proc((t)->pid, SIGTERM, 1); \
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do { \
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schedule(); \
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} while (kill_proc((t)->pid, SIGTERM, 1) == 0); \
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})
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#else
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#include <linux/kthread.h>
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3,2,0)
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#define skb_frag_page(x) ((x)->page)
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#endif
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#endif /* __KERNEL__ */
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/****************************************************************************/
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#endif /* _BSD_COMPAT_H_ */
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