Root/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/*
38 * fake some BSD driver interface stuff specifically for OCF use
39 */
40
41typedef struct ocf_device *device_t;
42
43typedef 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
51struct 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#ifndef htole32
188#define htole32(x) cpu_to_le32(x)
189#endif
190#ifndef htobe32
191#define htobe32(x) cpu_to_be32(x)
192#endif
193#ifndef htole16
194#define htole16(x) cpu_to_le16(x)
195#endif
196#ifndef htobe16
197#define htobe16(x) cpu_to_be16(x)
198#endif
199
200/* older kernels don't have these */
201
202#include <asm/irq.h>
203#if !defined(IRQ_NONE) && !defined(IRQ_RETVAL)
204#define IRQ_NONE
205#define IRQ_HANDLED
206#define IRQ_WAKE_THREAD
207#define IRQ_RETVAL
208#define irqreturn_t void
209typedef irqreturn_t (*irq_handler_t)(int irq, void *arg, struct pt_regs *regs);
210#endif
211#ifndef IRQF_SHARED
212#define IRQF_SHARED SA_SHIRQ
213#endif
214
215#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
216# define strlcpy(dest,src,len) \
217        ({strncpy(dest,src,(len)-1); ((char *)dest)[(len)-1] = '\0'; })
218#endif
219
220#ifndef MAX_ERRNO
221#define MAX_ERRNO 4095
222#endif
223#ifndef IS_ERR_VALUE
224#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,5)
225#include <linux/err.h>
226#endif
227#ifndef IS_ERR_VALUE
228#define IS_ERR_VALUE(x) ((unsigned long)(x) >= (unsigned long)-MAX_ERRNO)
229#endif
230#endif
231
232/*
233 * common debug for all
234 */
235#if 1
236#define dprintk(a...) do { if (debug) printk(a); } while(0)
237#else
238#define dprintk(a...)
239#endif
240
241#ifndef SLAB_ATOMIC
242/* Changed in 2.6.20, must use GFP_ATOMIC now */
243#define SLAB_ATOMIC GFP_ATOMIC
244#endif
245
246/*
247 * need some additional support for older kernels */
248#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,2)
249#define pci_register_driver_compat(driver, rc) \
250    do { \
251        if ((rc) > 0) { \
252            (rc) = 0; \
253        } else if (rc == 0) { \
254            (rc) = -ENODEV; \
255        } else { \
256            pci_unregister_driver(driver); \
257        } \
258    } while (0)
259#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
260#define pci_register_driver_compat(driver,rc) ((rc) = (rc) < 0 ? (rc) : 0)
261#else
262#define pci_register_driver_compat(driver,rc)
263#endif
264
265#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
266
267#include <linux/mm.h>
268#include <asm/scatterlist.h>
269
270static inline void sg_set_page(struct scatterlist *sg, struct page *page,
271                   unsigned int len, unsigned int offset)
272{
273    sg->page = page;
274    sg->offset = offset;
275    sg->length = len;
276}
277
278static inline void *sg_virt(struct scatterlist *sg)
279{
280    return page_address(sg->page) + sg->offset;
281}
282
283#define sg_init_table(sg, n)
284
285#endif
286
287#ifndef late_initcall
288#define late_initcall(init) module_init(init)
289#endif
290
291#endif /* __KERNEL__ */
292
293/****************************************************************************/
294#endif /* _BSD_COMPAT_H_ */
295

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