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 *master_vcs[MAX_SUBCORES];
  85 };
  86
  87 /*
  88  * This struct goes in the PACA on 64-bit processors.  It is used
  89  * to store host state that needs to be saved when we enter a guest
  90  * and restored when we exit, but isn't specific to any particular
  91  * guest or vcpu.  It also has some scratch fields used by the guest
  92  * exit code.
  93  */
  94 struct kvmppc_host_state {
  95         ulong host_r1;
  96         ulong host_r2;
  97         ulong host_msr;
  98         ulong vmhandler;
  99         ulong scratch0;
 100         ulong scratch1;
 101         ulong scratch2;
 102         u8 in_guest;
 103         u8 restore_hid5;
 104         u8 napping;
 105
 106 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 107         u8 hwthread_req;
 108         u8 hwthread_state;
 109         u8 host_ipi;
 110         u8 ptid;
 111         struct kvm_vcpu *kvm_vcpu;
 112         struct kvmppc_vcore *kvm_vcore;
 113         unsigned long xics_phys;
 114         u32 saved_xirr;
 115         u64 dabr;
 116         u64 host_mmcr[7];       /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER */
 117         u32 host_pmc[8];
 118         u64 host_purr;
 119         u64 host_spurr;
 120         u64 host_dscr;
 121         u64 dec_expires;
 122         struct kvm_split_mode *kvm_split_mode;
 123 #endif
 124 #ifdef CONFIG_PPC_BOOK3S_64
 125         u64 cfar;
 126         u64 ppr;
 127         u64 host_fscr;
 128 #endif
 129 };
 130
 131 struct kvmppc_book3s_shadow_vcpu {
 132         bool in_use;
 133         ulong gpr[14];
 134         u32 cr;
 135         ulong xer;
 136         ulong ctr;
 137         ulong lr;
 138         ulong pc;
 139
 140         ulong shadow_srr1;
 141         ulong fault_dar;
 142         u32 fault_dsisr;
 143         u32 last_inst;
 144
 145 #ifdef CONFIG_PPC_BOOK3S_32
 146         u32     sr[16];                 /* Guest SRs */
 147
 148         struct kvmppc_host_state hstate;
 149 #endif
 150
 151 #ifdef CONFIG_PPC_BOOK3S_64
 152         u8 slb_max;                     /* highest used guest slb entry */
 153         struct  {
 154                 u64     esid;
 155                 u64     vsid;
 156         } slb[64];                      /* guest SLB */
 157         u64 shadow_fscr;
 158 #endif
 159 };
 160
 161 #endif /*__ASSEMBLY__ */
 162
 163 /* Values for kvm_state */
 164 #define KVM_HWTHREAD_IN_KERNEL  0
 165 #define KVM_HWTHREAD_IN_NAP     1
 166 #define KVM_HWTHREAD_IN_KVM     2
 167
 168 #endif /* __ASM_KVM_BOOK3S_ASM_H__ */