include/sys/conf.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  22 /*        All Rights Reserved   */
  23
  24 /*
  25  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28
  29 #ifndef _SYS_CONF_H
  30 #define _SYS_CONF_H
  31
  32
  33 #include <sys/feature_tests.h>
  34
  35 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
  36 #include <sys/t_lock.h>
  37 #endif
  38
  39 #ifdef  __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 #define FMNAMESZ        8               /* used by struct fmodsw */
  44
  45 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
  46
  47 #ifdef _KERNEL
  48
  49 /*
  50  * XXX  Given that drivers need to include this file,
  51  *      <sys/systm.h> probably shouldn't be here, as
  52  *      it legitimizes (aka provides prototypes for)
  53  *      all sorts of functions that aren't in the DKI/SunDDI
  54  */
  55 #include <sys/systm.h>
  56 #include <sys/devops.h>
  57 #include <sys/model.h>
  58 #include <sys/types.h>
  59 #include <sys/buf.h>
  60 #include <sys/cred.h>
  61 #include <sys/uio.h>
  62 #include <sys/poll.h>
  63 #include <vm/as.h>
  64
  65 typedef struct fmodsw {
  66         char                    f_name[FMNAMESZ + 1];
  67         struct streamtab        *f_str;
  68         int                     f_flag;
  69 } fmodsw_t;
  70
  71 extern struct dev_ops **devopsp;
  72 extern int devcnt;
  73
  74 /*
  75  * Return streams information for the driver specified by major number or
  76  *   NULL if device cb_ops structure is not present.
  77  */
  78 #define STREAMSTAB(maj) (devopsp[(maj)] == NULL ? NULL : \
  79         (devopsp[(maj)]->devo_cb_ops == NULL ? \
  80         NULL : \
  81         devopsp[(maj)]->devo_cb_ops->cb_str))
  82 #define CBFLAG(maj)     (devopsp[(maj)]->devo_cb_ops->cb_flag)
  83
  84 extern int devi_identify(dev_info_t *);
  85 extern int devi_probe(dev_info_t *);
  86 extern int devi_attach(dev_info_t *, ddi_attach_cmd_t);
  87 extern int devi_detach(dev_info_t *, ddi_detach_cmd_t);
  88 extern int devi_reset(dev_info_t *, ddi_reset_cmd_t);
  89 extern int devi_quiesce(dev_info_t *);
  90
  91 /*
  92  * The following [cb]dev_* functions are not part of the DDI, use
  93  * <sys/sunldi.h> defined interfaces instead.
  94  */
  95 extern int dev_open(dev_t *, int, int, cred_t *);
  96 extern int dev_lopen(dev_t *, int, int, cred_t *);
  97 extern int dev_close(dev_t, int, int, cred_t *);
  98 extern int dev_lclose(dev_t, int, int, cred_t *);
  99
 100 extern int dev_to_instance(dev_t);
 101
 102 extern int bdev_strategy(struct buf *);
 103 extern int bdev_print(dev_t, caddr_t);
 104 extern int bdev_dump(dev_t, caddr_t, daddr_t, int);
 105 extern int bdev_size(dev_t);
 106 extern uint64_t bdev_Size(dev_t);
 107
 108 extern int cdev_read(dev_t, struct uio *, cred_t *);
 109 extern int cdev_write(dev_t, struct uio *, cred_t *);
 110 extern int cdev_size(dev_t);
 111 extern uint64_t cdev_Size(dev_t);
 112 extern int cdev_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
 113 extern int cdev_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off,
 114         size_t len, size_t *maplen, uint_t model);
 115 extern int cdev_mmap(int (*)(dev_t, off_t, int),
 116     dev_t, off_t, int);
 117 extern int cdev_segmap(dev_t, off_t, struct as *, caddr_t *,
 118     off_t, uint_t, uint_t, uint_t, cred_t *);
 119 extern int cdev_poll(dev_t, short, int, short *, struct pollhead **);
 120 extern int cdev_prop_op(dev_t, dev_info_t *, ddi_prop_op_t,
 121     int, char *, caddr_t, int *);
 122
 123 #endif /* _KERNEL */
 124
 125
 126 /*
 127  * Device flags.
 128  *
 129  * Bit 0 to bit 15 are reserved for kernel.
 130  * Bit 16 to bit 31 are reserved for different machines.
 131  */
 132
 133 #define D_NEW           0x00    /* new-style driver */
 134 #define _D_OLD          0x01    /* old-style driver (obsolete) */
 135 #define D_TAPE          0x08    /* Magtape device (no bdwrite when cooked) */
 136
 137 /*
 138  * MT-safety level (in DDI portion of flags).
 139  *
 140  * All drivers must be MT-safe, and must advertise this by specifying D_MP.
 141  *
 142  * The remainder of the flags apply only to STREAMS modules and drivers.
 143  *
 144  * A STREAMS driver or module can optionally select inner and outer perimeters.
 145  * The four mutually exclusive options that define the presence and scope
 146  * of the inner perimeter are:
 147  *      D_MTPERMOD - per module single threaded.
 148  *      D_MTQPAIR - per queue-pair single threaded.
 149  *      D_MTPERQ - per queue instance single threaded.
 150  *      (none of the above) - no inner perimeter restricting concurrency
 151  *
 152  * The presence of the outer perimeter is declared with:
 153  *      D_MTOUTPERIM - a per-module outer perimeter. Can be combined with
 154  *              D_MTPERQ, D_MTQPAIR, and D_MP.
 155  *
 156  * The concurrency when entering the different STREAMS entry points can be
 157  * modified with:
 158  *      D_MTPUTSHARED - modifier for D_MTPERQ, D_MTQPAIR, and D_MTPERMOD
 159  *              specifying that the put procedures should not be
 160  *              single-threaded at the inner perimeter.
 161  *      _D_MTOCSHARED - EXPERIMENTAL - will be removed in a future release.
 162  *              Modifier for D_MTPERQ, D_MTQPAIR, and D_MTPERMOD
 163  *              specifying that the open and close procedures should not be
 164  *              single-threaded at the inner perimeter.
 165  *      _D_MTCBSHARED - EXPERIMENTAL - will be removed in a future release.
 166  *              Modifier for D_MTPERQ, D_MTQPAIR, and D_MTPERMOD
 167  *              specifying that the callback i.e qtimeout() procedures should
 168  *              not be single-threaded at the inner perimeter.
 169  *      _D_MTSVCSHARED - EXPERIMENTAL - will be removed in a future release.
 170  *              Modifier for D_MTPERMOD only. Specifies that the service
 171  *              procedure should not be single-threaded at the inner perimeter.
 172  *              However only a single instance of the service thread can run on
 173  *              any given queue.
 174  *      D_MTOCEXCL - modifier for D_MTOUTPERIM specifying that the open and
 175  *              close procedures should be single-threaded at the outer
 176  *              perimeter.
 177  */
 178 #define D_MTSAFE        0x0020  /* multi-threaded module or driver */
 179 #define _D_QNEXTLESS    0x0040  /* Unused, retained for source compatibility */
 180 #define _D_MTOCSHARED   0x0080  /* modify: open/close procedures are hot */
 181 /* 0x100 - see below */
 182 /* 0x200 - see below */
 183 /* 0x400 - see below */
 184 #define D_MTOCEXCL      0x0800  /* modify: open/close are exclusive at outer */
 185 #define D_MTPUTSHARED   0x1000  /* modify: put procedures are hot */
 186 #define D_MTPERQ        0x2000  /* per queue instance single-threaded */
 187 #define D_MTQPAIR       0x4000  /* per queue-pair instance single-threaded */
 188 #define D_MTPERMOD      0x6000  /* per module single-threaded */
 189 #define D_MTOUTPERIM    0x8000  /* r/w outer perimeter around whole modules */
 190 #define _D_MTCBSHARED   0x10000 /* modify : callback procedures are hot */
 191 #define _D_MTSVCSHARED  0x20000 /* modify : service procedures are hot */
 192
 193 /* The inner perimeter scope bits */
 194 #define D_MTINNER_MASK  (D_MP|D_MTPERQ|D_MTQPAIR|D_MTPERMOD)
 195
 196 /* Inner perimeter modification bits */
 197 #define D_MTINNER_MOD   (D_MTPUTSHARED|_D_MTOCSHARED|_D_MTCBSHARED| \
 198     _D_MTSVCSHARED)
 199
 200 /* Outer perimeter modification bits */
 201 #define D_MTOUTER_MOD   (D_MTOCEXCL)
 202
 203 /* All the MT flags */
 204 #define D_MTSAFETY_MASK (D_MTINNER_MASK|D_MTOUTPERIM|D_MTPUTSHARED|\
 205                         D_MTINNER_MOD|D_MTOUTER_MOD)
 206
 207 #define D_MP            D_MTSAFE /* ddi/dki approved flag */
 208
 209 #define D_64BIT         0x200   /* Driver supports 64-bit offsets, blk nos. */
 210
 211 #define D_SYNCSTR       0x400   /* Module or driver has Synchronous STREAMS */
 212                                 /* extended qinit structure */
 213
 214 #define D_DEVMAP        0x100   /* Use devmap framework to mmap device */
 215
 216 #define D_HOTPLUG       0x4     /* Driver is hotplug capable */
 217
 218 #define D_U64BIT        0x40000 /* Driver supports unsigned 64-bit uio offset */
 219
 220 #define _D_DIRECT       0x80000 /* Private flag for transport modules */
 221
 222 #define D_OPEN_RETURNS_EINTR    0x100000 /* EINTR expected from open(9E) */
 223
 224 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
 225
 226 #ifdef  __cplusplus
 227 }
 228 #endif
 229
 230 #endif  /* _SYS_CONF_H */