arch/powerpc/include/asm/kvm_book3s_64.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 2010
  16  *
  17  * Authors: Alexander Graf <agraf@suse.de>
  18  */
  19
  20 #ifndef __ASM_KVM_BOOK3S_64_H__
  21 #define __ASM_KVM_BOOK3S_64_H__
  22
  23 #ifdef CONFIG_KVM_BOOK3S_PR
  24 static inline struct kvmppc_book3s_shadow_vcpu *to_svcpu(struct kvm_vcpu *vcpu)
  25 {
  26         return &get_paca()->shadow_vcpu;
  27 }
  28 #endif
  29
  30 #define SPAPR_TCE_SHIFT         12
  31
  32 static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r,
  33                                              unsigned long pte_index)
  34 {
  35         unsigned long rb, va_low;
  36
  37         rb = (v & ~0x7fUL) << 16;               /* AVA field */
  38         va_low = pte_index >> 3;
  39         if (v & HPTE_V_SECONDARY)
  40                 va_low = ~va_low;
  41         /* xor vsid from AVA */
  42         if (!(v & HPTE_V_1TB_SEG))
  43                 va_low ^= v >> 12;
  44         else
  45                 va_low ^= v >> 24;
  46         va_low &= 0x7ff;
  47         if (v & HPTE_V_LARGE) {
  48                 rb |= 1;                        /* L field */
  49                 if (cpu_has_feature(CPU_FTR_ARCH_206) &&
  50                     (r & 0xff000)) {
  51                         /* non-16MB large page, must be 64k */
  52                         /* (masks depend on page size) */
  53                         rb |= 0x1000;           /* page encoding in LP field */
  54                         rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */
  55                         rb |= (va_low & 0xfe);  /* AVAL field (P7 doesn't seem to care) */
  56                 }
  57         } else {
  58                 /* 4kB page */
  59                 rb |= (va_low & 0x7ff) << 12;   /* remaining 11b of VA */
  60         }
  61         rb |= (v >> 54) & 0x300;                /* B field */
  62         return rb;
  63 }
  64
  65 #endif /* __ASM_KVM_BOOK3S_64_H__ */