include/soc/nps/mtm.h

   1 /*
   2  * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef SOC_NPS_MTM_H
  34 #define SOC_NPS_MTM_H
  35
  36 #define CTOP_INST_HWSCHD_OFF_R3                 0x3B6F00BF
  37 #define CTOP_INST_HWSCHD_RESTORE_R3             0x3E6F70C3
  38
  39 static inline void hw_schd_save(unsigned int *flags)
  40 {
  41         __asm__ __volatile__(
  42         "       .word %1\n"
  43         "       st r3,[%0]\n"
  44         :
  45         : "r"(flags), "i"(CTOP_INST_HWSCHD_OFF_R3)
  46         : "r3", "memory");
  47 }
  48
  49 static inline void hw_schd_restore(unsigned int flags)
  50 {
  51         __asm__ __volatile__(
  52         "       mov r3, %0\n"
  53         "       .word %1\n"
  54         :
  55         : "r"(flags), "i"(CTOP_INST_HWSCHD_RESTORE_R3)
  56         : "r3");
  57 }
  58
  59 #endif /* SOC_NPS_MTM_H */