arch/powerpc/include/asm/kvm_book3s_asm.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 SUSE Linux Products GmbH 2009
  16  *
  17  * Authors: Alexander Graf <agraf@suse.de>
  18  */
  19
  20 #ifndef __ASM_KVM_BOOK3S_ASM_H__
  21 #define __ASM_KVM_BOOK3S_ASM_H__
  22
  23 /* XICS ICP register offsets */
  24 #define XICS_XIRR               4
  25 #define XICS_MFRR               0xc
  26 #define XICS_IPI                2       /* interrupt source # for IPIs */
  27
  28 /* Maximum number of threads per physical core */
  29 #define MAX_SMT_THREADS         8
  30
  31 /* Maximum number of subcores per physical core */
  32 #define MAX_SUBCORES            4
  33
  34 #ifdef __ASSEMBLY__
  35
  36 #ifdef CONFIG_KVM_BOOK3S_HANDLER
  37
  38 #include <asm/kvm_asm.h>
  39
  40 .macro DO_KVM intno
  41         .if (\intno == BOOK3S_INTERRUPT_SYSTEM_RESET) || \
  42             (\intno == BOOK3S_INTERRUPT_MACHINE_CHECK) || \
  43             (\intno == BOOK3S_INTERRUPT_DATA_STORAGE) || \
  44             (\intno == BOOK3S_INTERRUPT_INST_STORAGE) || \
  45             (\intno == BOOK3S_INTERRUPT_DATA_SEGMENT) || \
  46             (\intno == BOOK3S_INTERRUPT_INST_SEGMENT) || \
  47             (\intno == BOOK3S_INTERRUPT_EXTERNAL) || \
  48             (\intno == BOOK3S_INTERRUPT_EXTERNAL_HV) || \
  49             (\intno == BOOK3S_INTERRUPT_ALIGNMENT) || \
  50             (\intno == BOOK3S_INTERRUPT_PROGRAM) || \
  51             (\intno == BOOK3S_INTERRUPT_FP_UNAVAIL) || \
  52             (\intno == BOOK3S_INTERRUPT_DECREMENTER) || \
  53             (\intno == BOOK3S_INTERRUPT_SYSCALL) || \
  54             (\intno == BOOK3S_INTERRUPT_TRACE) || \
  55             (\intno == BOOK3S_INTERRUPT_PERFMON) || \
  56             (\intno == BOOK3S_INTERRUPT_ALTIVEC) || \
  57             (\intno == BOOK3S_INTERRUPT_VSX)
  58
  59         b       kvmppc_trampoline_\intno
  60 kvmppc_resume_\intno:
  61
  62         .endif
  63 .endm
  64
  65 #else
  66
  67 .macro DO_KVM intno
  68 .endm
  69
  70 #endif /* CONFIG_KVM_BOOK3S_HANDLER */
  71
  72 #else  /*__ASSEMBLY__ */
  73
  74 struct kvmppc_vcore;
  75
  76 /* Struct used for coordinating micro-threading (split-core) mode changes */
  77 struct kvm_split_mode {
  78         unsigned long   rpr;
  79         unsigned long   pmmar;
  80         unsigned long   ldbar;
  81         u8              subcore_size;
  82         u8              do_nap;
  83         u8              napped[MAX_SMT_THREADS];
  84         struct kvmppc_vcore *vc[MAX_SUBCORES];
  85         /* Bits for changing lpcr on P9 */
  86         unsigned long   lpcr_req;
  87         unsigned long   lpidr_req;
  88         unsigned long   host_lpcr;
  89         u32             do_set;
  90         u32             do_restore;
  91         union {
  92                 u32     allphases;
  93                 u8      phase[4];
  94         } lpcr_sync;
  95 };
  96
  97 /*
  98  * This struct goes in the PACA on 64-bit processors.  It is used
  99  * to store host state that needs to be saved when we enter a guest
 100  * and restored when we exit, but isn't specific to any particular
 101  * guest or vcpu.  It also has some scratch fields used by the guest
 102  * exit code.
 103  */
 104 struct kvmppc_host_state {
 105         ulong host_r1;
 106         ulong host_r2;
 107         ulong host_msr;
 108         ulong vmhandler;
 109         ulong scratch0;
 110         ulong scratch1;
 111         ulong scratch2;
 112         u8 in_guest;
 113         u8 restore_hid5;
 114         u8 napping;
 115
 116 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 117         u8 hwthread_req;
 118         u8 hwthread_state;
 119         u8 host_ipi;
 120         u8 ptid;                /* thread number within subcore when split */
 121         u8 tid;                 /* thread number within whole core */
 122         struct kvm_vcpu *kvm_vcpu;
 123         struct kvmppc_vcore *kvm_vcore;
 124         void __iomem *xics_phys;
 125         void __iomem *xive_tima_phys;
 126         void __iomem *xive_tima_virt;
 127         u32 saved_xirr;
 128         u64 dabr;
 129         u64 host_mmcr[7];       /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER */
 130         u32 host_pmc[8];
 131         u64 host_purr;
 132         u64 host_spurr;
 133         u64 host_dscr;
 134         u64 dec_expires;
 135         struct kvm_split_mode *kvm_split_mode;
 136 #endif
 137 #ifdef CONFIG_PPC_BOOK3S_64
 138         u64 cfar;
 139         u64 ppr;
 140         u64 host_fscr;
 141 #endif
 142 };
 143
 144 struct kvmppc_book3s_shadow_vcpu {
 145         bool in_use;
 146         ulong gpr[14];
 147         u32 cr;
 148         ulong xer;
 149         ulong ctr;
 150         ulong lr;
 151         ulong pc;
 152
 153         ulong shadow_srr1;
 154         ulong fault_dar;
 155         u32 fault_dsisr;
 156         u32 last_inst;
 157
 158 #ifdef CONFIG_PPC_BOOK3S_32
 159         u32     sr[16];                 /* Guest SRs */
 160
 161         struct kvmppc_host_state hstate;
 162 #endif
 163
 164 #ifdef CONFIG_PPC_BOOK3S_64
 165         u8 slb_max;                     /* highest used guest slb entry */
 166         struct  {
 167                 u64     esid;
 168                 u64     vsid;
 169         } slb[64];                      /* guest SLB */
 170         u64 shadow_fscr;
 171 #endif
 172 };
 173
 174 #endif /*__ASSEMBLY__ */
 175
 176 /* Values for kvm_state */
 177 #define KVM_HWTHREAD_IN_KERNEL  0
 178 #define KVM_HWTHREAD_IN_IDLE    1
 179 #define KVM_HWTHREAD_IN_KVM     2
 180
 181 #endif /* __ASM_KVM_BOOK3S_ASM_H__ */