sys/arch/xen/include/xen3-public/arch-ia64/sioemu.h

   1 /******************************************************************************
   2  * sioemu.h
   3  *
   4  * Copyright (c) 2008 Tristan Gingold <tgingold@free.fr>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #ifndef __XEN_PUBLIC_IA64_SIOEMU_H__
  23 #define __XEN_PUBLIC_IA64_SIOEMU_H__
  24
  25 /* SIOEMU specific hypercalls.
  26    The numbers are the minor part of FW_HYPERCALL_SIOEMU.  */
  27
  28 /* Defines the callback entry point.  r8=ip, r9=data.
  29    Must be called per-vcpu.  */
  30 #define SIOEMU_HYPERCALL_SET_CALLBACK 0x01
  31
  32 /* Finish sioemu fw initialization and start firmware.  r8=ip.  */
  33 #define SIOEMU_HYPERCALL_START_FW 0x02
  34
  35 /* Add IO pages in physmap.  */
  36 #define SIOEMU_HYPERCALL_ADD_IO_PHYSMAP 0x03
  37
  38 /* Get wallclock time.  */
  39 #define SIOEMU_HYPERCALL_GET_TIME 0x04
  40
  41 /* Flush cache.  */
  42 #define SIOEMU_HYPERCALL_FLUSH_CACHE 0x07
  43
  44 /* Get freq base.  */
  45 #define SIOEMU_HYPERCALL_FREQ_BASE 0x08
  46
  47 /* Return from callback.  */
  48 #define SIOEMU_HYPERCALL_CALLBACK_RETURN 0x09
  49
  50 /* Deliver an interrupt.  */
  51 #define SIOEMU_HYPERCALL_DELIVER_INT 0x0a
  52
  53 /* SIOEMU callback reason.  */
  54
  55 /* An event (from event channel) has to be delivered.  */
  56 #define SIOEMU_CB_EVENT       0x00
  57
  58 /* Emulate an IO access.  */
  59 #define SIOEMU_CB_IO_EMULATE  0x01
  60
  61 /* An IPI is sent to a dead vcpu.  */
  62 #define SIOEMU_CB_WAKEUP_VCPU 0x02
  63
  64 /* A SAL hypercall is executed.  */
  65 #define SIOEMU_CB_SAL_ASSIST  0x03
  66
  67 #ifndef __ASSEMBLY__
  68 struct sioemu_callback_info {
  69     /* Saved registers.  */
  70     unsigned long ip;
  71     unsigned long psr;
  72     unsigned long ifs;
  73     unsigned long nats;
  74     unsigned long r8;
  75     unsigned long r9;
  76     unsigned long r10;
  77     unsigned long r11;
  78
  79     /* Callback parameters.  */
  80     unsigned long cause;
  81     unsigned long arg0;
  82     unsigned long arg1;
  83     unsigned long arg2;
  84     unsigned long arg3;
  85     unsigned long _pad2[2];
  86     unsigned long r2;
  87 };
  88 #endif /* __ASSEMBLY__ */
  89 #endif /* __XEN_PUBLIC_IA64_SIOEMU_H__ */