hw/hypercall.h

   1 /*
   2  * QEMU-KVM Hypercall emulation
   3  *
   4  * Copyright (c) 2003-2004 Fabrice Bellard
   5  * Copyright (c) 2006 Qumranet
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25
  26 #define HCR_REGISTER    0x00  // Hypercall Command Register WR
  27 #define HSR_REGISTER    0x04  // Hypercall Status Register RD
  28 #define HP_TXSIZE       0x08
  29 #define HP_TXBUFF       0x0c
  30 #define HP_RXSIZE       0x10
  31 #define HP_RXBUFF       0x14
  32
  33 // HCR_REGISTER commands
  34 #define HCR_DI          1 // disable interrupts
  35 #define HCR_EI          2 // enable interrupts
  36 #define HCR_GRS         4 // Global reset
  37 #define HCR_RESET       (HCR_GRS|HCR_DI)
  38
  39
  40 // Bits in HSR_REGISTER
  41 #define HSR_VDR         0x01  // vmchannel Data is ready to be read
  42
  43 #define HP_MEM_SIZE    0xE0
  44
  45