arch/powerpc/include/asm/kvm_host.h

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License, version 2, as
   4  * published by the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful,
   7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  * GNU General Public License for more details.
  10  *
  11  * You should have received a copy of the GNU General Public License
  12  * along with this program; if not, write to the Free Software
  13  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  14  *
  15  * Copyright IBM Corp. 2007
  16  *
  17  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
  18  */
  19
  20 #ifndef __POWERPC_KVM_HOST_H__
  21 #define __POWERPC_KVM_HOST_H__
  22
  23 #include <linux/mutex.h>
  24 #include <linux/timer.h>
  25 #include <linux/types.h>
  26 #include <linux/kvm_types.h>
  27 #include <asm/kvm_asm.h>
  28
  29 #define KVM_MAX_VCPUS 1
  30 #define KVM_MEMORY_SLOTS 32
  31 /* memory slots that does not exposed to userspace */
  32 #define KVM_PRIVATE_MEM_SLOTS 4
  33
  34 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
  35
  36 /* We don't currently support large pages. */
  37 #define KVM_PAGES_PER_HPAGE (1<<31)
  38
  39 struct kvm;
  40 struct kvm_run;
  41 struct kvm_vcpu;
  42
  43 struct kvm_vm_stat {
  44         u32 remote_tlb_flush;
  45 };
  46
  47 struct kvm_vcpu_stat {
  48         u32 sum_exits;
  49         u32 mmio_exits;
  50         u32 dcr_exits;
  51         u32 signal_exits;
  52         u32 light_exits;
  53         /* Account for special types of light exits: */
  54         u32 itlb_real_miss_exits;
  55         u32 itlb_virt_miss_exits;
  56         u32 dtlb_real_miss_exits;
  57         u32 dtlb_virt_miss_exits;
  58         u32 syscall_exits;
  59         u32 isi_exits;
  60         u32 dsi_exits;
  61         u32 emulated_inst_exits;
  62         u32 dec_exits;
  63         u32 ext_intr_exits;
  64         u32 halt_wakeup;
  65 };
  66
  67 struct tlbe {
  68         u32 tid; /* Only the low 8 bits are used. */
  69         u32 word0;
  70         u32 word1;
  71         u32 word2;
  72 };
  73
  74 struct kvm_arch {
  75 };
  76
  77 struct kvm_vcpu_arch {
  78         /* Unmodified copy of the guest's TLB. */
  79         struct tlbe guest_tlb[PPC44x_TLB_SIZE];
  80         /* TLB that's actually used when the guest is running. */
  81         struct tlbe shadow_tlb[PPC44x_TLB_SIZE];
  82         /* Pages which are referenced in the shadow TLB. */
  83         struct page *shadow_pages[PPC44x_TLB_SIZE];
  84
  85         /* Track which TLB entries we've modified in the current exit. */
  86         u8 shadow_tlb_mod[PPC44x_TLB_SIZE];
  87
  88         u32 host_stack;
  89         u32 host_pid;
  90         u32 host_dbcr0;
  91         u32 host_dbcr1;
  92         u32 host_dbcr2;
  93         u32 host_iac[4];
  94         u32 host_msr;
  95
  96         u64 fpr[32];
  97         u32 gpr[32];
  98
  99         u32 pc;
 100         u32 cr;
 101         u32 ctr;
 102         u32 lr;
 103         u32 xer;
 104
 105         u32 msr;
 106         u32 mmucr;
 107         u32 sprg0;
 108         u32 sprg1;
 109         u32 sprg2;
 110         u32 sprg3;
 111         u32 sprg4;
 112         u32 sprg5;
 113         u32 sprg6;
 114         u32 sprg7;
 115         u32 srr0;
 116         u32 srr1;
 117         u32 csrr0;
 118         u32 csrr1;
 119         u32 dsrr0;
 120         u32 dsrr1;
 121         u32 dear;
 122         u32 esr;
 123         u32 dec;
 124         u32 decar;
 125         u32 tbl;
 126         u32 tbu;
 127         u32 tcr;
 128         u32 tsr;
 129         u32 ivor[16];
 130         u32 ivpr;
 131         u32 pir;
 132
 133         u32 shadow_pid;
 134         u32 pid;
 135         u32 swap_pid;
 136
 137         u32 pvr;
 138         u32 ccr0;
 139         u32 ccr1;
 140         u32 dbcr0;
 141         u32 dbcr1;
 142
 143         u32 last_inst;
 144         u32 fault_dear;
 145         u32 fault_esr;
 146         gpa_t paddr_accessed;
 147
 148         u8 io_gpr; /* GPR used as IO source/target */
 149         u8 mmio_is_bigendian;
 150         u8 dcr_needed;
 151         u8 dcr_is_write;
 152
 153         u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
 154
 155         struct timer_list dec_timer;
 156         unsigned long pending_exceptions;
 157 };
 158
 159 struct kvm_guest_debug {
 160         int enabled;
 161         unsigned long bp[4];
 162         int singlestep;
 163 };
 164
 165 #endif /* __POWERPC_KVM_HOST_H__ */