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__ */ 166