drivers/staging/cxt1e1/sbecom_inline_linux.h

   1 /*
   2  * $Id: sbecom_inline_linux.h,v 1.2 2007/08/15 22:51:35 rickd PMCC4_3_1B $
   3  */
   4
   5 #ifndef _INC_SBECOM_INLNX_H_
   6 #define _INC_SBECOM_INLNX_H_
   7
   8 /*-----------------------------------------------------------------------------
   9  * sbecom_inline_linux.h - SBE common Linux inlined routines
  10  *
  11  * Copyright (C) 2007  One Stop Systems, Inc.
  12  * Copyright (C) 2005  SBE, Inc.
  13  *
  14  *   This program is free software; you can redistribute it and/or modify
  15  *   it under the terms of the GNU General Public License as published by
  16  *   the Free Software Foundation; either version 2 of the License, or
  17  *   (at your option) any later version.
  18  *
  19  *   This program is distributed in the hope that it will be useful,
  20  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *   GNU General Public License for more details.
  23  *
  24  * For further information, contact via email: support@onestopsystems.com
  25  * One Stop Systems, Inc.  Escondido, California  U.S.A.
  26  *-----------------------------------------------------------------------------
  27  * RCS info:
  28  * RCS revision: $Revision: 1.2 $
  29  * Last changed on $Date: 2007/08/15 22:51:35 $
  30  * Changed by $Author: rickd $
  31  *-----------------------------------------------------------------------------
  32  * $Log: sbecom_inline_linux.h,v $
  33  * Revision 1.2  2007/08/15 22:51:35  rickd
  34  * Remove duplicate version.h entry.
  35  *
  36  * Revision 1.1  2007/08/15 22:50:29  rickd
  37  * Update linux/config for 2.6.18 and later.
  38  *
  39  * Revision 1.0  2005/09/28 00:10:09  rickd
  40  * Initial revision
  41  *
  42  *-----------------------------------------------------------------------------
  43  */
  44
  45
  46 #if defined (__FreeBSD__) || defined (__NetBSD__)
  47 #include <sys/types.h>
  48 #else
  49 #include <linux/types.h>
  50 #include <linux/version.h>
  51 #if defined(CONFIG_SMP) && ! defined(__SMP__)
  52 #define __SMP__
  53 #endif
  54 #if defined(CONFIG_MODVERSIONS) && defined(MODULE) && ! defined(MODVERSIONS)
  55 #define MODVERSIONS
  56 #endif
  57
  58 #ifdef MODULE
  59 #ifdef MODVERSIONS
  60 #include <config/modversions.h>
  61 #endif
  62 #include <linux/module.h>
  63 #endif
  64 #endif
  65
  66 #include <linux/kernel.h>       /* resolves kmalloc references */
  67 #include <linux/skbuff.h>       /* resolves skb references */
  68 #include <linux/netdevice.h>    /* resolves dev_kree_skb_any */
  69 #include <asm/byteorder.h>      /* resolves cpu_to_le32 */
  70
  71 #if 0
  72
  73 /*** PORT POINT WARNING
  74  ***
  75  *** Under Linux 2.6 it has been found that compiler is re-ordering
  76  *** in-lined pci_write_32() functions to the detrement of correct
  77  *** hardware setup.  Therefore, inlining of PCI accesses has been
  78  *** de-implemented, and subroutine calls have been implemented.
  79  ***/
  80
  81 static inline u_int32_t
  82 pci_read_32 (u_int32_t *p)
  83 {
  84 #ifdef FLOW_DEBUG
  85     u_int32_t   v;
  86
  87     FLUSH_PCI_READ ();
  88     v = le32_to_cpu (*p);
  89     if (cxt1e1_log_level >= LOG_DEBUG)
  90         pr_info("pci_read : %x = %x\n", (u_int32_t) p, v);
  91     return v;
  92 #else
  93                 FLUSH_PCI_READ ();      /* */
  94     return le32_to_cpu (*p);
  95 #endif
  96 }
  97
  98 static inline void
  99 pci_write_32 (u_int32_t *p, u_int32_t v)
 100 {
 101 #ifdef FLOW_DEBUG
 102     if (cxt1e1_log_level >= LOG_DEBUG)
 103         pr_info("pci_write: %x = %x\n", (u_int32_t) p, v);
 104 #endif
 105     *p = cpu_to_le32 (v);
 106     FLUSH_PCI_WRITE ();             /* This routine is called from routines
 107                                      * which do multiple register writes
 108                                      * which themselves need flushing between
 109                                      * writes in order to guarantee write
 110                                      * ordering.  It is less code-cumbersome
 111                                      * to flush here-in then to investigate
 112                                      * and code the many other register
 113                                      * writing routines. */
 114 }
 115 #else
 116 /* forward reference */
 117 u_int32_t   pci_read_32 (u_int32_t *p);
 118 void        pci_write_32 (u_int32_t *p, u_int32_t v);
 119
 120 #endif
 121
 122
 123 /*
 124  * system dependent callbacks
 125  */
 126
 127 /**********/
 128 /* malloc */
 129 /**********/
 130
 131 static inline void *
 132 OS_kmalloc (size_t size)
 133 {
 134     char       *ptr = kmalloc (size, GFP_KERNEL | GFP_DMA);
 135
 136     if (ptr)
 137         memset (ptr, 0, size);
 138     return ptr;
 139 }
 140
 141 static inline void
 142 OS_kfree (void *x)
 143 {
 144     kfree (x);
 145 }
 146
 147
 148 /****************/
 149 /* memory token */
 150 /****************/
 151
 152 static inline void *
 153 OS_mem_token_alloc (size_t size)
 154 {
 155     struct sk_buff *skb;
 156
 157     skb = dev_alloc_skb (size);
 158     if (!skb)
 159     {
 160         //pr_warning("no mem in OS_mem_token_alloc !\n");
 161         return 0;
 162     }
 163     return skb;
 164 }
 165
 166
 167 static inline void
 168 OS_mem_token_free (void *token)
 169 {
 170     dev_kfree_skb_any (token);
 171 }
 172
 173
 174 static inline void
 175 OS_mem_token_free_irq (void *token)
 176 {
 177     dev_kfree_skb_irq (token);
 178 }
 179
 180
 181 static inline void *
 182 OS_mem_token_data (void *token)
 183 {
 184     return ((struct sk_buff *) token)->data;
 185 }
 186
 187
 188 static inline void *
 189 OS_mem_token_next (void *token)
 190 {
 191     return 0;
 192 }
 193
 194
 195 static inline int
 196 OS_mem_token_len (void *token)
 197 {
 198     return ((struct sk_buff *) token)->len;
 199 }
 200
 201
 202 static inline int
 203 OS_mem_token_tlen (void *token)
 204 {
 205     return ((struct sk_buff *) token)->len;
 206 }
 207
 208
 209 /***************************************/
 210 /* virtual to physical addr conversion */
 211 /***************************************/
 212
 213 static inline u_long
 214 OS_phystov (void *addr)
 215 {
 216     return (u_long) __va (addr);
 217 }
 218
 219
 220 static inline u_long
 221 OS_vtophys (void *addr)
 222 {
 223     return __pa (addr);
 224 }
 225
 226
 227 /**********/
 228 /* semops */
 229 /**********/
 230
 231 void        OS_sem_init (void *, int);
 232
 233
 234 static inline void
 235 OS_sem_free (void *sem)
 236 {
 237     /*
 238      * NOOP - since semaphores structures predeclared w/in structures, no
 239      * longer malloc'd
 240      */
 241 }
 242
 243 #define SD_SEM_TAKE(sem,desc)  down(sem)
 244 #define SD_SEM_GIVE(sem)       up(sem)
 245 #define SEM_AVAILABLE     1
 246 #define SEM_TAKEN         0
 247
 248
 249 /**********************/
 250 /* watchdog functions */
 251 /**********************/
 252
 253 struct watchdog
 254 {
 255     struct timer_list h;
 256     struct work_struct work;
 257     void       *softc;
 258     void        (*func) (void *softc);
 259     int         ticks;
 260     int         init_tq;
 261 };
 262
 263
 264 static inline int
 265 OS_start_watchdog (struct watchdog * wd)
 266 {
 267     wd->h.expires = jiffies + wd->ticks;
 268     add_timer (&wd->h);
 269     return 0;
 270 }
 271
 272
 273 static inline int
 274 OS_stop_watchdog (struct watchdog * wd)
 275 {
 276     del_timer_sync (&wd->h);
 277     return 0;
 278 }
 279
 280
 281 static inline int
 282 OS_free_watchdog (struct watchdog * wd)
 283 {
 284     OS_stop_watchdog (wd);
 285     OS_kfree (wd);
 286     return 0;
 287 }
 288
 289
 290 /* sleep in microseconds */
 291 void        OS_uwait (int usec, char *description);
 292 void        OS_uwait_dummy (void);
 293
 294
 295 /* watchdog functions */
 296 int OS_init_watchdog(struct watchdog *wdp, void (*f) (void *), void *ci, int usec);
 297
 298
 299 #endif                          /*** _INC_SBECOM_INLNX_H_ ***/