The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/twa/tw_osl_inline.h

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    1 /*
    2  * Copyright (c) 2004-07 Applied Micro Circuits Corporation.
    3  * Copyright (c) 2004-05 Vinod Kashyap.
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  *      $FreeBSD$
   28  */
   29 
   30 /*
   31  * AMCC'S 3ware driver for 9000 series storage controllers.
   32  *
   33  * Author: Vinod Kashyap
   34  * Modifications by: Adam Radford
   35  */
   36 
   37 
   38 
   39 #ifndef TW_OSL_INLINE_H
   40 
   41 #define TW_OSL_INLINE_H
   42 
   43 
   44 /*
   45  * Inline functions shared between OSL and CL, and defined by OSL.
   46  */
   47 
   48 
   49 #include <dev/twa/tw_osl.h>
   50 
   51 
   52 
   53 /*
   54  * Function name:       tw_osl_init_lock
   55  * Description:         Initializes a lock.
   56  *
   57  * Input:               ctlr_handle     -- ptr to controller handle
   58  *                      lock_name       -- string indicating name of the lock
   59  * Output:              lock            -- ptr to handle to the initialized lock
   60  * Return value:        None
   61  */
   62 #define tw_osl_init_lock(ctlr_handle, lock_name, lock)  \
   63         mtx_init(lock, lock_name, NULL, MTX_SPIN)
   64 
   65 
   66 
   67 /*
   68  * Function name:       tw_osl_destroy_lock
   69  * Description:         Destroys a previously initialized lock.
   70  *
   71  * Input:               ctlr_handle     -- ptr to controller handle
   72  *                      lock            -- ptr to handle to the lock to be
   73  *                                              destroyed
   74  * Output:              None
   75  * Return value:        None
   76  */
   77 #define tw_osl_destroy_lock(ctlr_handle, lock)  \
   78         mtx_destroy(lock)
   79 
   80 
   81 
   82 /*
   83  * Function name:       tw_osl_get_lock
   84  * Description:         Acquires the specified lock.
   85  *
   86  * Input:               ctlr_handle     -- ptr to controller handle
   87  *                      lock            -- ptr to handle to the lock to be
   88  *                                              acquired
   89  * Output:              None
   90  * Return value:        None
   91  */
   92 #define tw_osl_get_lock(ctlr_handle, lock)      \
   93         mtx_lock_spin(lock)
   94 
   95 
   96 
   97 /*
   98  * Function name:       tw_osl_free_lock
   99  * Description:         Frees a previously acquired lock.
  100  *
  101  * Input:               ctlr_handle     -- ptr to controller handle
  102  *                      lock            -- ptr to handle to the lock to be freed
  103  * Output:              None
  104  * Return value:        None
  105  */
  106 #define tw_osl_free_lock(ctlr_handle, lock)     \
  107         mtx_unlock_spin(lock)
  108 
  109 
  110 
  111 /*
  112  * Function name:       tw_osl_ctlr_ready
  113  * Description:         CL calls this function to notify the OS Layer that it
  114  *                      is ready to accept new requests.  This function is
  115  *                      called only if a call to tw_osl_ctlr_busy has been
  116  *                      made previously.  We don't use this function as of now.
  117  *
  118  * Input:               ctlr_handle     -- ptr to controller handle
  119  * Output:              None
  120  * Return value:        None
  121  */
  122 #define tw_osl_ctlr_ready(ctlr_handle)
  123 
  124 
  125 
  126 #ifdef TW_OSL_DEBUG
  127 
  128 /*
  129  * Function name:       tw_osl_dbg_printf
  130  * Description:         Prints passed info (prefixed by ctlr name)to syslog
  131  *
  132  * Input:               ctlr_handle -- controller handle
  133  *                      fmt -- format string for the arguments to follow
  134  *                      ... -- variable number of arguments, to be printed
  135  *                              based on the fmt string
  136  * Output:              None
  137  * Return value:        Number of bytes printed
  138  */
  139 #define tw_osl_dbg_printf(ctlr_handle, fmt, args...)                    \
  140         twa_printf((ctlr_handle->osl_ctlr_ctxt), fmt, ##args)
  141 
  142 #endif /* TW_OSL_DEBUG */
  143 
  144 
  145 
  146 /*
  147  * Function name:       tw_osl_notify_event
  148  * Description:         Prints passed event info (prefixed by ctlr name)
  149  *                      to syslog
  150  *
  151  * Input:               ctlr_handle -- controller handle
  152  *                      event -- ptr to a packet describing the event/error
  153  * Output:              None
  154  * Return value:        None
  155  */
  156 #define tw_osl_notify_event(ctlr_handle, event)                         \
  157         twa_printf((ctlr_handle->osl_ctlr_ctxt),                        \
  158                 "%s: (0x%02X: 0x%04X): %s: %s\n",                       \
  159                 event->severity_str,                                    \
  160                 event->event_src,                                       \
  161                 event->aen_code,                                        \
  162                 event->parameter_data +                                 \
  163                         strlen(event->parameter_data) + 1,              \
  164                 event->parameter_data)
  165 
  166 
  167 
  168 /*
  169  * Function name:       tw_osl_read_reg
  170  * Description:         Reads a register on the controller
  171  *
  172  * Input:               ctlr_handle -- controller handle
  173  *                      offset -- offset from Base Address
  174  *                      size -- # of bytes to read
  175  * Output:              None
  176  * Return value:        Value read
  177  */
  178 #define tw_osl_read_reg         tw_osl_read_reg_inline
  179 static __inline TW_UINT32
  180 tw_osl_read_reg_inline(struct tw_cl_ctlr_handle *ctlr_handle,
  181         TW_INT32 offset, TW_INT32 size)
  182 {
  183         bus_space_tag_t         bus_tag =
  184                 ((struct twa_softc *)(ctlr_handle->osl_ctlr_ctxt))->bus_tag;
  185         bus_space_handle_t      bus_handle =
  186                 ((struct twa_softc *)(ctlr_handle->osl_ctlr_ctxt))->bus_handle;
  187 
  188         if (size == 4)
  189                 return((TW_UINT32)bus_space_read_4(bus_tag, bus_handle,
  190                         offset));
  191         else if (size == 2)
  192                 return((TW_UINT32)bus_space_read_2(bus_tag, bus_handle,
  193                         offset));
  194         else
  195                 return((TW_UINT32)bus_space_read_1(bus_tag, bus_handle,
  196                         offset));
  197 }
  198 
  199 
  200 
  201 /*
  202  * Function name:       tw_osl_write_reg
  203  * Description:         Writes to a register on the controller
  204  *
  205  * Input:               ctlr_handle -- controller handle
  206  *                      offset -- offset from Base Address
  207  *                      value -- value to write
  208  *                      size -- # of bytes to write
  209  * Output:              None
  210  * Return value:        None
  211  */
  212 #define tw_osl_write_reg        tw_osl_write_reg_inline
  213 static __inline TW_VOID
  214 tw_osl_write_reg_inline(struct tw_cl_ctlr_handle *ctlr_handle,
  215         TW_INT32 offset, TW_INT32 value, TW_INT32 size)
  216 {
  217         bus_space_tag_t         bus_tag =
  218                 ((struct twa_softc *)(ctlr_handle->osl_ctlr_ctxt))->bus_tag;
  219         bus_space_handle_t      bus_handle =
  220                 ((struct twa_softc *)(ctlr_handle->osl_ctlr_ctxt))->bus_handle;
  221 
  222         if (size == 4)
  223                 bus_space_write_4(bus_tag, bus_handle, offset, value);
  224         else if (size == 2)
  225                 bus_space_write_2(bus_tag, bus_handle, offset, (TW_INT16)value);
  226         else
  227                 bus_space_write_1(bus_tag, bus_handle, offset, (TW_INT8)value);
  228 }
  229 
  230 
  231 
  232 #ifdef TW_OSL_PCI_CONFIG_ACCESSIBLE
  233 
  234 /*
  235  * Function name:       tw_osl_read_pci_config
  236  * Description:         Reads from the PCI config space.
  237  *
  238  * Input:               sc      -- ptr to per ctlr structure
  239  *                      offset  -- register offset
  240  *                      size    -- # of bytes to be read
  241  * Output:              None
  242  * Return value:        Value read
  243  */
  244 #define tw_osl_read_pci_config(ctlr_handle, offset, size)               \
  245         pci_read_config(                                                \
  246                 ((struct twa_softc *)(ctlr_handle->osl_ctlr_ctxt))->bus_dev, \
  247                 offset, size)
  248 
  249 
  250 
  251 /*
  252  * Function name:       tw_osl_write_pci_config
  253  * Description:         Writes to the PCI config space.
  254  *
  255  * Input:               sc      -- ptr to per ctlr structure
  256  *                      offset  -- register offset
  257  *                      value   -- value to write
  258  *                      size    -- # of bytes to be written
  259  * Output:              None
  260  * Return value:        None
  261  */
  262 #define tw_osl_write_pci_config(ctlr_handle, offset, value, size)       \
  263         pci_write_config(                                               \
  264                 ((struct twa_softc *)(ctlr_handle->osl_ctlr_ctxt))->bus_dev, \
  265                 offset/*PCIR_STATUS*/, value, size)
  266 
  267 #endif /* TW_OSL_PCI_CONFIG_ACCESSIBLE */
  268 
  269 
  270 
  271 /*
  272  * Function name:       tw_osl_get_local_time
  273  * Description:         Gets the local time
  274  *
  275  * Input:               None
  276  * Output:              None
  277  * Return value:        local time
  278  */
  279 #define tw_osl_get_local_time()                                         \
  280         (time_second - utc_offset())
  281 
  282 
  283 /*
  284  * Function name:       tw_osl_delay
  285  * Description:         Spin for the specified time
  286  *
  287  * Input:               usecs -- micro-seconds to spin
  288  * Output:              None
  289  * Return value:        None
  290  */
  291 #define tw_osl_delay(usecs)     DELAY(usecs)
  292 
  293 
  294 
  295 #ifdef TW_OSL_CAN_SLEEP
  296 
  297 /*
  298  * Function name:       tw_osl_sleep
  299  * Description:         Sleep for the specified time, or until woken up
  300  *
  301  * Input:               ctlr_handle -- controller handle
  302  *                      sleep_handle -- handle to sleep on
  303  *                      timeout -- time period (in ms) to sleep
  304  * Output:              None
  305  * Return value:        0 -- successfully woken up
  306  *                      EWOULDBLOCK -- time out
  307  *                      ERESTART -- woken up by a signal
  308  */
  309 #define tw_osl_sleep(ctlr_handle, sleep_handle, timeout)                \
  310         tsleep((TW_VOID *)sleep_handle, PRIBIO, NULL, timeout)
  311 
  312 
  313 
  314 /*
  315  * Function name:       tw_osl_wakeup
  316  * Description:         Wake up a sleeping process
  317  *
  318  * Input:               ctlr_handle -- controller handle
  319  *                      sleep_handle -- handle of sleeping process to be
  320                                         woken up
  321  * Output:              None
  322  * Return value:        None
  323  */
  324 #define tw_osl_wakeup(ctlr_handle, sleep_handle)                        \
  325         wakeup_one(sleep_handle)
  326 
  327 #endif /* TW_OSL_CAN_SLEEP */
  328 
  329 
  330 
  331 /* Allows setting breakpoints in the CL code for debugging purposes. */
  332 #define tw_osl_breakpoint()             breakpoint()
  333 
  334 
  335 /* Text name of current function. */
  336 #define tw_osl_cur_func()               __func__
  337 
  338 
  339 /* Copy 'size' bytes from 'src' to 'dest'. */
  340 #define tw_osl_memcpy(dest, src, size)  bcopy(src, dest, size)
  341 
  342 
  343 /* Zero 'size' bytes starting at 'addr'. */
  344 #define tw_osl_memzero                  bzero
  345 
  346 
  347 /* Standard sprintf. */
  348 #define tw_osl_sprintf                  sprintf
  349 
  350 
  351 /* Copy string 'src' to 'dest'. */
  352 #define tw_osl_strcpy                   strcpy
  353 
  354 
  355 /* Return length of string pointed at by 'str'. */
  356 #define tw_osl_strlen                   strlen
  357 
  358 
  359 /* Standard vsprintf. */
  360 #define tw_osl_vsprintf                 vsprintf
  361 
  362 
  363 
  364 #endif /* TW_OSL_INLINE_H */

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