target/linux/generic/files/crypto/ocf/ocf-compat.h

   1 #ifndef _BSD_COMPAT_H_
   2 #define _BSD_COMPAT_H_ 1
   3 /****************************************************************************/
   4 /*
   5  * Provide compat routines for older linux kernels and BSD kernels
   6  *
   7  * Written by David McCullough <david_mccullough@mcafee.com>
   8  * Copyright (C) 2010 David McCullough <david_mccullough@mcafee.com>
   9  *
  10  * LICENSE TERMS
  11  *
  12  * The free distribution and use of this software in both source and binary
  13  * form is allowed (with or without changes) provided that:
  14  *
  15  *   1. distributions of this source code include the above copyright
  16  *      notice, this list of conditions and the following disclaimer;
  17  *
  18  *   2. distributions in binary form include the above copyright
  19  *      notice, this list of conditions and the following disclaimer
  20  *      in the documentation and/or other associated materials;
  21  *
  22  *   3. the copyright holder's name is not used to endorse products
  23  *      built using this software without specific written permission.
  24  *
  25  * ALTERNATIVELY, provided that this notice is retained in full, this file
  26  * may be distributed under the terms of the GNU General Public License (GPL),
  27  * in which case the provisions of the GPL apply INSTEAD OF those given above.
  28  *
  29  * DISCLAIMER
  30  *
  31  * This software is provided 'as is' with no explicit or implied warranties
  32  * in respect of its properties, including, but not limited to, correctness
  33  * and/or fitness for purpose.
  34  */
  35 /****************************************************************************/
  36 #ifdef __KERNEL__
  37 #include <linux/version.h>
  38 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) && !defined(AUTOCONF_INCLUDED)
  39 #include <linux/config.h>
  40 #endif
  41
  42 /*
  43  * fake some BSD driver interface stuff specifically for OCF use
  44  */
  45
  46 typedef struct ocf_device *device_t;
  47
  48 typedef struct {
  49         int (*cryptodev_newsession)(device_t dev, u_int32_t *sidp, struct cryptoini *cri);
  50         int (*cryptodev_freesession)(device_t dev, u_int64_t tid);
  51         int (*cryptodev_process)(device_t dev, struct cryptop *crp, int hint);
  52         int (*cryptodev_kprocess)(device_t dev, struct cryptkop *krp, int hint);
  53 } device_method_t;
  54 #define DEVMETHOD(id, func)     id: func
  55
  56 struct ocf_device {
  57         char name[32];          /* the driver name */
  58         char nameunit[32];      /* the driver name + HW instance */
  59         int  unit;
  60         device_method_t methods;
  61         void *softc;
  62 };
  63
  64 #define CRYPTODEV_NEWSESSION(dev, sid, cri) \
  65         ((*(dev)->methods.cryptodev_newsession)(dev,sid,cri))
  66 #define CRYPTODEV_FREESESSION(dev, sid) \
  67         ((*(dev)->methods.cryptodev_freesession)(dev, sid))
  68 #define CRYPTODEV_PROCESS(dev, crp, hint) \
  69         ((*(dev)->methods.cryptodev_process)(dev, crp, hint))
  70 #define CRYPTODEV_KPROCESS(dev, krp, hint) \
  71         ((*(dev)->methods.cryptodev_kprocess)(dev, krp, hint))
  72
  73 #define device_get_name(dev)    ((dev)->name)
  74 #define device_get_nameunit(dev)        ((dev)->nameunit)
  75 #define device_get_unit(dev)    ((dev)->unit)
  76 #define device_get_softc(dev)   ((dev)->softc)
  77
  78 #define softc_device_decl \
  79                 struct ocf_device _device; \
  80                 device_t
  81
  82 #define softc_device_init(_sc, _name, _unit, _methods) \
  83         if (1) {\
  84         strncpy((_sc)->_device.name, _name, sizeof((_sc)->_device.name) - 1); \
  85         snprintf((_sc)->_device.nameunit, sizeof((_sc)->_device.name), "%s%d", _name, _unit); \
  86         (_sc)->_device.unit = _unit; \
  87         (_sc)->_device.methods = _methods; \
  88         (_sc)->_device.softc = (void *) _sc; \
  89         *(device_t *)((softc_get_device(_sc))+1) = &(_sc)->_device; \
  90         } else
  91
  92 #define softc_get_device(_sc)   (&(_sc)->_device)
  93
  94 /*
  95  * iomem support for 2.4 and 2.6 kernels
  96  */
  97 #include <linux/version.h>
  98 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
  99 #define ocf_iomem_t     unsigned long
 100
 101 /*
 102  * implement simple workqueue like support for older kernels
 103  */
 104
 105 #include <linux/tqueue.h>
 106
 107 #define work_struct tq_struct
 108
 109 #define INIT_WORK(wp, fp, ap) \
 110         do { \
 111                 (wp)->sync = 0; \
 112                 (wp)->routine = (fp); \
 113                 (wp)->data = (ap); \
 114         } while (0)
 115
 116 #define schedule_work(wp) \
 117         do { \
 118                 queue_task((wp), &tq_immediate); \
 119                 mark_bh(IMMEDIATE_BH); \
 120         } while (0)
 121
 122 #define flush_scheduled_work()  run_task_queue(&tq_immediate)
 123
 124 #else
 125 #define ocf_iomem_t     void __iomem *
 126
 127 #include <linux/workqueue.h>
 128
 129 #endif
 130
 131 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
 132 #include <linux/fdtable.h>
 133 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
 134 #define files_fdtable(files)    (files)
 135 #endif
 136
 137 #ifdef MODULE_PARM
 138 #undef module_param     /* just in case */
 139 #define module_param(a,b,c)             MODULE_PARM(a,"i")
 140 #endif
 141
 142 #define bzero(s,l)              memset(s,0,l)
 143 #define bcopy(s,d,l)    memcpy(d,s,l)
 144 #define bcmp(x, y, l)   memcmp(x,y,l)
 145
 146 #define MIN(x,y)        ((x) < (y) ? (x) : (y))
 147
 148 #define device_printf(dev, a...) ({ \
 149                                 printk("%s: ", device_get_nameunit(dev)); printk(a); \
 150                         })
 151
 152 #undef printf
 153 #define printf(fmt...)  printk(fmt)
 154
 155 #define KASSERT(c,p)    if (!(c)) { printk p ; } else
 156
 157 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 158 #define ocf_daemonize(str) \
 159         daemonize(); \
 160         spin_lock_irq(&current->sigmask_lock); \
 161         sigemptyset(&current->blocked); \
 162         recalc_sigpending(current); \
 163         spin_unlock_irq(&current->sigmask_lock); \
 164         sprintf(current->comm, str);
 165 #else
 166 #define ocf_daemonize(str) daemonize(str);
 167 #endif
 168
 169 #define TAILQ_INSERT_TAIL(q,d,m) list_add_tail(&(d)->m, (q))
 170 #define TAILQ_EMPTY(q)  list_empty(q)
 171 #define TAILQ_FOREACH(v, q, m) list_for_each_entry(v, q, m)
 172
 173 #define read_random(p,l) get_random_bytes(p,l)
 174
 175 #define DELAY(x)        ((x) > 2000 ? mdelay((x)/1000) : udelay(x))
 176 #define strtoul simple_strtoul
 177
 178 #define pci_get_vendor(dev)     ((dev)->vendor)
 179 #define pci_get_device(dev)     ((dev)->device)
 180
 181 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 182 #define pci_set_consistent_dma_mask(dev, mask) (0)
 183 #endif
 184 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
 185 #define pci_dma_sync_single_for_cpu pci_dma_sync_single
 186 #endif
 187
 188 #ifndef DMA_32BIT_MASK
 189 #define DMA_32BIT_MASK  0x00000000ffffffffULL
 190 #endif
 191
 192 #ifndef htole32
 193 #define htole32(x)      cpu_to_le32(x)
 194 #endif
 195 #ifndef htobe32
 196 #define htobe32(x)      cpu_to_be32(x)
 197 #endif
 198 #ifndef htole16
 199 #define htole16(x)      cpu_to_le16(x)
 200 #endif
 201 #ifndef htobe16
 202 #define htobe16(x)      cpu_to_be16(x)
 203 #endif
 204
 205 /* older kernels don't have these */
 206
 207 #include <asm/irq.h>
 208 #if !defined(IRQ_NONE) && !defined(IRQ_RETVAL)
 209 #define IRQ_NONE
 210 #define IRQ_HANDLED
 211 #define IRQ_WAKE_THREAD
 212 #define IRQ_RETVAL
 213 #define irqreturn_t void
 214 typedef irqreturn_t (*irq_handler_t)(int irq, void *arg, struct pt_regs *regs);
 215 #endif
 216 #ifndef IRQF_SHARED
 217 #define IRQF_SHARED     SA_SHIRQ
 218 #endif
 219
 220 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 221 # define strlcpy(dest,src,len) \
 222                 ({strncpy(dest,src,(len)-1); ((char *)dest)[(len)-1] = '\0'; })
 223 #endif
 224
 225 #ifndef MAX_ERRNO
 226 #define MAX_ERRNO       4095
 227 #endif
 228 #ifndef IS_ERR_VALUE
 229 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,5)
 230 #include <linux/err.h>
 231 #endif
 232 #ifndef IS_ERR_VALUE
 233 #define IS_ERR_VALUE(x) ((unsigned long)(x) >= (unsigned long)-MAX_ERRNO)
 234 #endif
 235 #endif
 236
 237 /*
 238  * common debug for all
 239  */
 240 #if 1
 241 #define dprintk(a...)   do { if (debug) printk(a); } while(0)
 242 #else
 243 #define dprintk(a...)
 244 #endif
 245
 246 #ifndef SLAB_ATOMIC
 247 /* Changed in 2.6.20, must use GFP_ATOMIC now */
 248 #define SLAB_ATOMIC     GFP_ATOMIC
 249 #endif
 250
 251 /*
 252  * need some additional support for older kernels */
 253 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,2)
 254 #define pci_register_driver_compat(driver, rc) \
 255         do { \
 256                 if ((rc) > 0) { \
 257                         (rc) = 0; \
 258                 } else if (rc == 0) { \
 259                         (rc) = -ENODEV; \
 260                 } else { \
 261                         pci_unregister_driver(driver); \
 262                 } \
 263         } while (0)
 264 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
 265 #define pci_register_driver_compat(driver,rc) ((rc) = (rc) < 0 ? (rc) : 0)
 266 #else
 267 #define pci_register_driver_compat(driver,rc)
 268 #endif
 269
 270 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
 271
 272 #include <linux/mm.h>
 273 #include <asm/scatterlist.h>
 274
 275 static inline void sg_set_page(struct scatterlist *sg,  struct page *page,
 276                                unsigned int len, unsigned int offset)
 277 {
 278         sg->page = page;
 279         sg->offset = offset;
 280         sg->length = len;
 281 }
 282
 283 static inline void *sg_virt(struct scatterlist *sg)
 284 {
 285         return page_address(sg->page) + sg->offset;
 286 }
 287
 288 #define sg_init_table(sg, n)
 289
 290 #endif
 291
 292 #ifndef late_initcall
 293 #define late_initcall(init) module_init(init)
 294 #endif
 295
 296 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4) || !defined(CONFIG_SMP)
 297 #define ocf_for_each_cpu(cpu) for ((cpu) = 0; (cpu) == 0; (cpu)++)
 298 #else
 299 #define ocf_for_each_cpu(cpu) for_each_present_cpu(cpu)
 300 #endif
 301
 302 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
 303 #include <linux/sched.h>
 304 #define kill_proc(p,s,v)        send_sig(s,find_task_by_vpid(p),0)
 305 #endif
 306
 307 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4)
 308
 309 struct ocf_thread {
 310         struct task_struct      *task;
 311         int                                     (*func)(void *arg);
 312         void                            *arg;
 313 };
 314
 315 /* thread startup helper func */
 316 static inline int ocf_run_thread(void *arg)
 317 {
 318         struct ocf_thread *t = (struct ocf_thread *) arg;
 319         if (!t)
 320                 return -1; /* very bad */
 321         t->task = current;
 322         daemonize();
 323         spin_lock_irq(&current->sigmask_lock);
 324         sigemptyset(&current->blocked);
 325         recalc_sigpending(current);
 326         spin_unlock_irq(&current->sigmask_lock);
 327         return (*t->func)(t->arg);
 328 }
 329
 330 #define kthread_create(f,a,fmt...) \
 331         ({ \
 332                 struct ocf_thread t; \
 333                 pid_t p; \
 334                 t.task = NULL; \
 335                 t.func = (f); \
 336                 t.arg = (a); \
 337                 p = kernel_thread(ocf_run_thread, &t, CLONE_FS|CLONE_FILES); \
 338                 while (p != (pid_t) -1 && t.task == NULL) \
 339                         schedule(); \
 340                 if (t.task) \
 341                         snprintf(t.task->comm, sizeof(t.task->comm), fmt); \
 342                 (t.task); \
 343         })
 344
 345 #define kthread_bind(t,cpu)     /**/
 346
 347 #define kthread_should_stop()   (strcmp(current->comm, "stopping") == 0)
 348
 349 #define kthread_stop(t) \
 350         ({ \
 351                 strcpy((t)->comm, "stopping"); \
 352                 kill_proc((t)->pid, SIGTERM, 1); \
 353                 do { \
 354                         schedule(); \
 355                 } while (kill_proc((t)->pid, SIGTERM, 1) == 0); \
 356         })
 357
 358 #else
 359 #include <linux/kthread.h>
 360 #endif
 361
 362 #endif /* __KERNEL__ */
 363
 364 /****************************************************************************/
 365 #endif /* _BSD_COMPAT_H_ */