target/linux/generic-2.6/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@securecomputing.com>
   8  * Copyright (C) 2007 David McCullough <david_mccullough@securecomputing.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 /*
  38  * fake some BSD driver interface stuff specifically for OCF use
  39  */
  40
  41 typedef struct ocf_device *device_t;
  42
  43 typedef struct {
  44         int (*cryptodev_newsession)(device_t dev, u_int32_t *sidp, struct cryptoini *cri);
  45         int (*cryptodev_freesession)(device_t dev, u_int64_t tid);
  46         int (*cryptodev_process)(device_t dev, struct cryptop *crp, int hint);
  47         int (*cryptodev_kprocess)(device_t dev, struct cryptkop *krp, int hint);
  48 } device_method_t;
  49 #define DEVMETHOD(id, func)     id: func
  50
  51 struct ocf_device {
  52         char name[32];          /* the driver name */
  53         char nameunit[32];      /* the driver name + HW instance */
  54         int  unit;
  55         device_method_t methods;
  56         void *softc;
  57 };
  58
  59 #define CRYPTODEV_NEWSESSION(dev, sid, cri) \
  60         ((*(dev)->methods.cryptodev_newsession)(dev,sid,cri))
  61 #define CRYPTODEV_FREESESSION(dev, sid) \
  62         ((*(dev)->methods.cryptodev_freesession)(dev, sid))
  63 #define CRYPTODEV_PROCESS(dev, crp, hint) \
  64         ((*(dev)->methods.cryptodev_process)(dev, crp, hint))
  65 #define CRYPTODEV_KPROCESS(dev, krp, hint) \
  66         ((*(dev)->methods.cryptodev_kprocess)(dev, krp, hint))
  67
  68 #define device_get_name(dev)    ((dev)->name)
  69 #define device_get_nameunit(dev)        ((dev)->nameunit)
  70 #define device_get_unit(dev)    ((dev)->unit)
  71 #define device_get_softc(dev)   ((dev)->softc)
  72
  73 #define softc_device_decl \
  74                 struct ocf_device _device; \
  75                 device_t
  76
  77 #define softc_device_init(_sc, _name, _unit, _methods) \
  78         if (1) {\
  79         strncpy((_sc)->_device.name, _name, sizeof((_sc)->_device.name) - 1); \
  80         snprintf((_sc)->_device.nameunit, sizeof((_sc)->_device.name), "%s%d", _name, _unit); \
  81         (_sc)->_device.unit = _unit; \
  82         (_sc)->_device.methods = _methods; \
  83         (_sc)->_device.softc = (void *) _sc; \
  84         *(device_t *)((softc_get_device(_sc))+1) = &(_sc)->_device; \
  85         } else
  86
  87 #define softc_get_device(_sc)   (&(_sc)->_device)
  88
  89 /*
  90  * iomem support for 2.4 and 2.6 kernels
  91  */
  92 #include <linux/version.h>
  93 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
  94 #define ocf_iomem_t     unsigned long
  95
  96 /*
  97  * implement simple workqueue like support for older kernels
  98  */
  99
 100 #include <linux/tqueue.h>
 101
 102 #define work_struct tq_struct
 103
 104 #define INIT_WORK(wp, fp, ap) \
 105         do { \
 106                 (wp)->sync = 0; \
 107                 (wp)->routine = (fp); \
 108                 (wp)->data = (ap); \
 109         } while (0)
 110
 111 #define schedule_work(wp) \
 112         do { \
 113                 queue_task((wp), &tq_immediate); \
 114                 mark_bh(IMMEDIATE_BH); \
 115         } while (0)
 116
 117 #define flush_scheduled_work()  run_task_queue(&tq_immediate)
 118
 119 #else
 120 #define ocf_iomem_t     void __iomem *
 121
 122 #include <linux/workqueue.h>
 123
 124 #endif
 125
 126 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
 127 #include <linux/fdtable.h>
 128 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
 129 #define files_fdtable(files)    (files)
 130 #endif
 131
 132 #ifdef MODULE_PARM
 133 #undef module_param     /* just in case */
 134 #define module_param(a,b,c)             MODULE_PARM(a,"i")
 135 #endif
 136
 137 #define bzero(s,l)              memset(s,0,l)
 138 #define bcopy(s,d,l)    memcpy(d,s,l)
 139 #define bcmp(x, y, l)   memcmp(x,y,l)
 140
 141 #define MIN(x,y)        ((x) < (y) ? (x) : (y))
 142
 143 #define device_printf(dev, a...) ({ \
 144                                 printk("%s: ", device_get_nameunit(dev)); printk(a); \
 145                         })
 146
 147 #undef printf
 148 #define printf(fmt...)  printk(fmt)
 149
 150 #define KASSERT(c,p)    if (!(c)) { printk p ; } else
 151
 152 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 153 #define ocf_daemonize(str) \
 154         daemonize(); \
 155         spin_lock_irq(&current->sigmask_lock); \
 156         sigemptyset(&current->blocked); \
 157         recalc_sigpending(current); \
 158         spin_unlock_irq(&current->sigmask_lock); \
 159         sprintf(current->comm, str);
 160 #else
 161 #define ocf_daemonize(str) daemonize(str);
 162 #endif
 163
 164 #define TAILQ_INSERT_TAIL(q,d,m) list_add_tail(&(d)->m, (q))
 165 #define TAILQ_EMPTY(q)  list_empty(q)
 166 #define TAILQ_FOREACH(v, q, m) list_for_each_entry(v, q, m)
 167
 168 #define read_random(p,l) get_random_bytes(p,l)
 169
 170 #define DELAY(x)        ((x) > 2000 ? mdelay((x)/1000) : udelay(x))
 171 #define strtoul simple_strtoul
 172
 173 #define pci_get_vendor(dev)     ((dev)->vendor)
 174 #define pci_get_device(dev)     ((dev)->device)
 175
 176 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 177 #define pci_set_consistent_dma_mask(dev, mask) (0)
 178 #endif
 179 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
 180 #define pci_dma_sync_single_for_cpu pci_dma_sync_single
 181 #endif
 182
 183 #ifndef DMA_32BIT_MASK
 184 #define DMA_32BIT_MASK  0x00000000ffffffffULL
 185 #endif
 186
 187 #define htole32(x)      cpu_to_le32(x)
 188 #define htobe32(x)      cpu_to_be32(x)
 189 #define htole16(x)      cpu_to_le16(x)
 190 #define htobe16(x)      cpu_to_be16(x)
 191
 192 /* older kernels don't have these */
 193
 194 #ifndef IRQ_NONE
 195 #define IRQ_NONE
 196 #define IRQ_HANDLED
 197 #define irqreturn_t void
 198 #endif
 199 #ifndef IRQF_SHARED
 200 #define IRQF_SHARED     SA_SHIRQ
 201 #endif
 202
 203 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 204 # define strlcpy(dest,src,len) \
 205                 ({strncpy(dest,src,(len)-1); ((char *)dest)[(len)-1] = '\0'; })
 206 #endif
 207
 208 #ifndef MAX_ERRNO
 209 #define MAX_ERRNO       4095
 210 #endif
 211 #ifndef IS_ERR_VALUE
 212 #define IS_ERR_VALUE(x) ((unsigned long)(x) >= (unsigned long)-MAX_ERRNO)
 213 #endif
 214
 215 /*
 216  * common debug for all
 217  */
 218 #if 1
 219 #define dprintk(a...)   do { if (debug) printk(a); } while(0)
 220 #else
 221 #define dprintk(a...)
 222 #endif
 223
 224 #ifndef SLAB_ATOMIC
 225 /* Changed in 2.6.20, must use GFP_ATOMIC now */
 226 #define SLAB_ATOMIC     GFP_ATOMIC
 227 #endif
 228
 229 /*
 230  * need some additional support for older kernels */
 231 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,2)
 232 #define pci_register_driver_compat(driver, rc) \
 233         do { \
 234                 if ((rc) > 0) { \
 235                         (rc) = 0; \
 236                 } else if (rc == 0) { \
 237                         (rc) = -ENODEV; \
 238                 } else { \
 239                         pci_unregister_driver(driver); \
 240                 } \
 241         } while (0)
 242 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
 243 #define pci_register_driver_compat(driver,rc) ((rc) = (rc) < 0 ? (rc) : 0)
 244 #else
 245 #define pci_register_driver_compat(driver,rc)
 246 #endif
 247
 248 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
 249
 250 #include <asm/scatterlist.h>
 251
 252 static inline void sg_set_page(struct scatterlist *sg,  struct page *page,
 253                                unsigned int len, unsigned int offset)
 254 {
 255         sg->page = page;
 256         sg->offset = offset;
 257         sg->length = len;
 258 }
 259
 260 static inline void *sg_virt(struct scatterlist *sg)
 261 {
 262         return page_address(sg->page) + sg->offset;
 263 }
 264
 265 #endif
 266
 267 #endif /* __KERNEL__ */
 268
 269 /****************************************************************************/
 270 #endif /* _BSD_COMPAT_H_ */