1 /* 2 * vcpu.h: HVM per vcpu definitions 3 * 4 * Copyright (c) 2005, International Business Machines Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms and conditions of the GNU General Public License, 8 * version 2, as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 * You should have received a copy of the GNU General Public License along with 16 * this program; If not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #ifndef __ASM_X86_HVM_VCPU_H__ 20 #define __ASM_X86_HVM_VCPU_H__ 21 22 #include <xen/tasklet.h> 23 #include <asm/hvm/io.h> 24 #include <asm/hvm/vlapic.h> 25 #include <asm/hvm/viridian.h> 26 #include <asm/hvm/vmx/vmcs.h> 27 #include <asm/hvm/vmx/vvmx.h> 28 #include <asm/hvm/svm/vmcb.h> 29 #include <asm/hvm/svm/nestedsvm.h> 30 #include <asm/mtrr.h> 31 32 enum hvm_io_completion { 33 HVMIO_no_completion, 34 HVMIO_mmio_completion, 35 HVMIO_pio_completion, 36 HVMIO_realmode_completion 37 }; 38 39 struct hvm_vcpu_asid { 40 uint64_t generation; 41 uint32_t asid; 42 }; 43 44 /* 45 * We may read or write up to m256 as a number of device-model 46 * transactions. 47 */ 48 struct hvm_mmio_cache { 49 unsigned long gla; 50 unsigned int size; 51 uint8_t dir; 52 uint8_t pad[3]; /* make buffer[] long-aligned */ 53 uint8_t buffer[32]; 54 }; 55 56 struct hvm_vcpu_io { 57 /* I/O request in flight to device model. */ 58 enum hvm_io_completion io_completion; 59 ioreq_t io_req; 60 61 /* 62 * HVM emulation: 63 * Linear address @mmio_gla maps to MMIO physical frame @mmio_gpfn. 64 * The latter is known to be an MMIO frame (not RAM). 65 * This translation is only valid for accesses as per @mmio_access. 66 */ 67 struct npfec mmio_access; 68 unsigned long mmio_gla; 69 unsigned long mmio_gpfn; 70 71 /* 72 * We may need to handle up to 3 distinct memory accesses per 73 * instruction. 74 */ 75 struct hvm_mmio_cache mmio_cache[3]; 76 unsigned int mmio_cache_count; 77 78 /* For retries we shouldn't re-fetch the instruction. */ 79 unsigned int mmio_insn_bytes; 80 unsigned char mmio_insn[16]; 81 /* 82 * For string instruction emulation we need to be able to signal a 83 * necessary retry through other than function return codes. 84 */ 85 bool_t mmio_retry; 86 87 unsigned long msix_unmask_address; 88 unsigned long msix_snoop_address; 89 unsigned long msix_snoop_gpa; 90 91 const struct g2m_ioport *g2m_ioport; 92 }; 93 hvm_vcpu_io_need_completion(const struct hvm_vcpu_io * vio)94 static inline bool_t hvm_vcpu_io_need_completion(const struct hvm_vcpu_io *vio) 95 { 96 return (vio->io_req.state == STATE_IOREQ_READY) && 97 !vio->io_req.data_is_ptr; 98 } 99 100 struct nestedvcpu { 101 bool_t nv_guestmode; /* vcpu in guestmode? */ 102 void *nv_vvmcx; /* l1 guest virtual VMCB/VMCS */ 103 void *nv_n1vmcx; /* VMCB/VMCS used to run l1 guest */ 104 void *nv_n2vmcx; /* shadow VMCB/VMCS used to run l2 guest */ 105 106 uint64_t nv_vvmcxaddr; /* l1 guest physical address of nv_vvmcx */ 107 paddr_t nv_n1vmcx_pa; /* host physical address of nv_n1vmcx */ 108 paddr_t nv_n2vmcx_pa; /* host physical address of nv_n2vmcx */ 109 110 /* SVM/VMX arch specific */ 111 union { 112 struct nestedsvm nsvm; 113 struct nestedvmx nvmx; 114 } u; 115 116 bool_t nv_flushp2m; /* True, when p2m table must be flushed */ 117 struct p2m_domain *nv_p2m; /* used p2m table for this vcpu */ 118 bool stale_np2m; /* True when p2m_base in VMCx02 is no longer valid */ 119 uint64_t np2m_generation; 120 121 struct hvm_vcpu_asid nv_n2asid; 122 123 bool_t nv_vmentry_pending; 124 bool_t nv_vmexit_pending; 125 bool_t nv_vmswitch_in_progress; /* true during vmentry/vmexit emulation */ 126 127 /* Does l1 guest intercept io ports 0x80 and/or 0xED ? 128 * Useful to optimize io permission handling. 129 */ 130 bool_t nv_ioport80; 131 bool_t nv_ioportED; 132 133 /* L2's control-resgister, just as the L2 sees them. */ 134 unsigned long guest_cr[5]; 135 }; 136 137 #define vcpu_nestedhvm(v) ((v)->arch.hvm_vcpu.nvcpu) 138 139 struct altp2mvcpu { 140 uint16_t p2midx; /* alternate p2m index */ 141 gfn_t veinfo_gfn; /* #VE information page gfn */ 142 }; 143 144 #define vcpu_altp2m(v) ((v)->arch.hvm_vcpu.avcpu) 145 146 struct hvm_vcpu { 147 /* Guest control-register and EFER values, just as the guest sees them. */ 148 unsigned long guest_cr[5]; 149 unsigned long guest_efer; 150 151 /* 152 * Processor-visible control-register values, while guest executes. 153 * CR0, CR4: Used as a cache of VMCS contents by VMX only. 154 * CR1, CR2: Never used (guest_cr[2] is always processor-visible CR2). 155 * CR3: Always used and kept up to date by paging subsystem. 156 */ 157 unsigned long hw_cr[5]; 158 159 struct vlapic vlapic; 160 s64 cache_tsc_offset; 161 u64 guest_time; 162 163 /* Lock and list for virtual platform timers. */ 164 spinlock_t tm_lock; 165 struct list_head tm_list; 166 167 bool flag_dr_dirty; 168 bool debug_state_latch; 169 bool single_step; 170 171 struct hvm_vcpu_asid n1asid; 172 173 u32 msr_tsc_aux; 174 u64 msr_tsc_adjust; 175 u64 msr_xss; 176 177 union { 178 struct arch_vmx_struct vmx; 179 struct arch_svm_struct svm; 180 } u; 181 182 struct tasklet assert_evtchn_irq_tasklet; 183 184 struct nestedvcpu nvcpu; 185 186 struct altp2mvcpu avcpu; 187 188 struct mtrr_state mtrr; 189 u64 pat_cr; 190 191 /* In mode delay_for_missed_ticks, VCPUs have differing guest times. */ 192 int64_t stime_offset; 193 194 u8 evtchn_upcall_vector; 195 196 /* Which cache mode is this VCPU in (CR0:CD/NW)? */ 197 u8 cache_mode; 198 199 struct hvm_vcpu_io hvm_io; 200 201 /* Callback into x86_emulate when emulating FPU/MMX/XMM instructions. */ 202 void (*fpu_exception_callback)(void *, struct cpu_user_regs *); 203 void *fpu_exception_callback_arg; 204 205 /* Pending hw/sw interrupt (.vector = -1 means nothing pending). */ 206 struct x86_event inject_event; 207 208 struct viridian_vcpu viridian; 209 }; 210 211 #endif /* __ASM_X86_HVM_VCPU_H__ */ 212 213 /* 214 * Local variables: 215 * mode: C 216 * c-file-style: "BSD" 217 * c-basic-offset: 4 218 * tab-width: 4 219 * indent-tabs-mode: nil 220 * End: 221 */ 222