linux-headers/asm-powerpc/kvm.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 IBM Corp. 2007
  16  *
  17  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
  18  */
  19
  20 #ifndef __LINUX_KVM_POWERPC_H
  21 #define __LINUX_KVM_POWERPC_H
  22
  23 #include <linux/types.h>
  24
  25 /* Select powerpc specific features in <linux/kvm.h> */
  26 #define __KVM_HAVE_SPAPR_TCE
  27 #define __KVM_HAVE_PPC_SMT
  28
  29 struct kvm_regs {
  30         __u64 pc;
  31         __u64 cr;
  32         __u64 ctr;
  33         __u64 lr;
  34         __u64 xer;
  35         __u64 msr;
  36         __u64 srr0;
  37         __u64 srr1;
  38         __u64 pid;
  39
  40         __u64 sprg0;
  41         __u64 sprg1;
  42         __u64 sprg2;
  43         __u64 sprg3;
  44         __u64 sprg4;
  45         __u64 sprg5;
  46         __u64 sprg6;
  47         __u64 sprg7;
  48
  49         __u64 gpr[32];
  50 };
  51
  52 #define KVM_SREGS_E_IMPL_NONE   0
  53 #define KVM_SREGS_E_IMPL_FSL    1
  54
  55 #define KVM_SREGS_E_FSL_PIDn    (1 << 0) /* PID1/PID2 */
  56
  57 /*
  58  * Feature bits indicate which sections of the sregs struct are valid,
  59  * both in KVM_GET_SREGS and KVM_SET_SREGS.  On KVM_SET_SREGS, registers
  60  * corresponding to unset feature bits will not be modified.  This allows
  61  * restoring a checkpoint made without that feature, while keeping the
  62  * default values of the new registers.
  63  *
  64  * KVM_SREGS_E_BASE contains:
  65  * CSRR0/1 (refers to SRR2/3 on 40x)
  66  * ESR
  67  * DEAR
  68  * MCSR
  69  * TSR
  70  * TCR
  71  * DEC
  72  * TB
  73  * VRSAVE (USPRG0)
  74  */
  75 #define KVM_SREGS_E_BASE                (1 << 0)
  76
  77 /*
  78  * KVM_SREGS_E_ARCH206 contains:
  79  *
  80  * PIR
  81  * MCSRR0/1
  82  * DECAR
  83  * IVPR
  84  */
  85 #define KVM_SREGS_E_ARCH206             (1 << 1)
  86
  87 /*
  88  * Contains EPCR, plus the upper half of 64-bit registers
  89  * that are 32-bit on 32-bit implementations.
  90  */
  91 #define KVM_SREGS_E_64                  (1 << 2)
  92
  93 #define KVM_SREGS_E_SPRG8               (1 << 3)
  94 #define KVM_SREGS_E_MCIVPR              (1 << 4)
  95
  96 /*
  97  * IVORs are used -- contains IVOR0-15, plus additional IVORs
  98  * in combination with an appropriate feature bit.
  99  */
 100 #define KVM_SREGS_E_IVOR                (1 << 5)
 101
 102 /*
 103  * Contains MAS0-4, MAS6-7, TLBnCFG, MMUCFG.
 104  * Also TLBnPS if MMUCFG[MAVN] = 1.
 105  */
 106 #define KVM_SREGS_E_ARCH206_MMU         (1 << 6)
 107
 108 /* DBSR, DBCR, IAC, DAC, DVC */
 109 #define KVM_SREGS_E_DEBUG               (1 << 7)
 110
 111 /* Enhanced debug -- DSRR0/1, SPRG9 */
 112 #define KVM_SREGS_E_ED                  (1 << 8)
 113
 114 /* Embedded Floating Point (SPE) -- IVOR32-34 if KVM_SREGS_E_IVOR */
 115 #define KVM_SREGS_E_SPE                 (1 << 9)
 116
 117 /* External Proxy (EXP) -- EPR */
 118 #define KVM_SREGS_EXP                   (1 << 10)
 119
 120 /* External PID (E.PD) -- EPSC/EPLC */
 121 #define KVM_SREGS_E_PD                  (1 << 11)
 122
 123 /* Processor Control (E.PC) -- IVOR36-37 if KVM_SREGS_E_IVOR */
 124 #define KVM_SREGS_E_PC                  (1 << 12)
 125
 126 /* Page table (E.PT) -- EPTCFG */
 127 #define KVM_SREGS_E_PT                  (1 << 13)
 128
 129 /* Embedded Performance Monitor (E.PM) -- IVOR35 if KVM_SREGS_E_IVOR */
 130 #define KVM_SREGS_E_PM                  (1 << 14)
 131
 132 /*
 133  * Special updates:
 134  *
 135  * Some registers may change even while a vcpu is not running.
 136  * To avoid losing these changes, by default these registers are
 137  * not updated by KVM_SET_SREGS.  To force an update, set the bit
 138  * in u.e.update_special corresponding to the register to be updated.
 139  *
 140  * The update_special field is zero on return from KVM_GET_SREGS.
 141  *
 142  * When restoring a checkpoint, the caller can set update_special
 143  * to 0xffffffff to ensure that everything is restored, even new features
 144  * that the caller doesn't know about.
 145  */
 146 #define KVM_SREGS_E_UPDATE_MCSR         (1 << 0)
 147 #define KVM_SREGS_E_UPDATE_TSR          (1 << 1)
 148 #define KVM_SREGS_E_UPDATE_DEC          (1 << 2)
 149 #define KVM_SREGS_E_UPDATE_DBSR         (1 << 3)
 150
 151 /*
 152  * In KVM_SET_SREGS, reserved/pad fields must be left untouched from a
 153  * previous KVM_GET_REGS.
 154  *
 155  * Unless otherwise indicated, setting any register with KVM_SET_SREGS
 156  * directly sets its value.  It does not trigger any special semantics such
 157  * as write-one-to-clear.  Calling KVM_SET_SREGS on an unmodified struct
 158  * just received from KVM_GET_SREGS is always a no-op.
 159  */
 160 struct kvm_sregs {
 161         __u32 pvr;
 162         union {
 163                 struct {
 164                         __u64 sdr1;
 165                         struct {
 166                                 struct {
 167                                         __u64 slbe;
 168                                         __u64 slbv;
 169                                 } slb[64];
 170                         } ppc64;
 171                         struct {
 172                                 __u32 sr[16];
 173                                 __u64 ibat[8];
 174                                 __u64 dbat[8];
 175                         } ppc32;
 176                 } s;
 177                 struct {
 178                         union {
 179                                 struct { /* KVM_SREGS_E_IMPL_FSL */
 180                                         __u32 features; /* KVM_SREGS_E_FSL_ */
 181                                         __u32 svr;
 182                                         __u64 mcar;
 183                                         __u32 hid0;
 184
 185                                         /* KVM_SREGS_E_FSL_PIDn */
 186                                         __u32 pid1, pid2;
 187                                 } fsl;
 188                                 __u8 pad[256];
 189                         } impl;
 190
 191                         __u32 features; /* KVM_SREGS_E_ */
 192                         __u32 impl_id;  /* KVM_SREGS_E_IMPL_ */
 193                         __u32 update_special; /* KVM_SREGS_E_UPDATE_ */
 194                         __u32 pir;      /* read-only */
 195                         __u64 sprg8;
 196                         __u64 sprg9;    /* E.ED */
 197                         __u64 csrr0;
 198                         __u64 dsrr0;    /* E.ED */
 199                         __u64 mcsrr0;
 200                         __u32 csrr1;
 201                         __u32 dsrr1;    /* E.ED */
 202                         __u32 mcsrr1;
 203                         __u32 esr;
 204                         __u64 dear;
 205                         __u64 ivpr;
 206                         __u64 mcivpr;
 207                         __u64 mcsr;     /* KVM_SREGS_E_UPDATE_MCSR */
 208
 209                         __u32 tsr;      /* KVM_SREGS_E_UPDATE_TSR */
 210                         __u32 tcr;
 211                         __u32 decar;
 212                         __u32 dec;      /* KVM_SREGS_E_UPDATE_DEC */
 213
 214                         /*
 215                          * Userspace can read TB directly, but the
 216                          * value reported here is consistent with "dec".
 217                          *
 218                          * Read-only.
 219                          */
 220                         __u64 tb;
 221
 222                         __u32 dbsr;     /* KVM_SREGS_E_UPDATE_DBSR */
 223                         __u32 dbcr[3];
 224                         __u32 iac[4];
 225                         __u32 dac[2];
 226                         __u32 dvc[2];
 227                         __u8 num_iac;   /* read-only */
 228                         __u8 num_dac;   /* read-only */
 229                         __u8 num_dvc;   /* read-only */
 230                         __u8 pad;
 231
 232                         __u32 epr;      /* EXP */
 233                         __u32 vrsave;   /* a.k.a. USPRG0 */
 234                         __u32 epcr;     /* KVM_SREGS_E_64 */
 235
 236                         __u32 mas0;
 237                         __u32 mas1;
 238                         __u64 mas2;
 239                         __u64 mas7_3;
 240                         __u32 mas4;
 241                         __u32 mas6;
 242
 243                         __u32 ivor_low[16]; /* IVOR0-15 */
 244                         __u32 ivor_high[18]; /* IVOR32+, plus room to expand */
 245
 246                         __u32 mmucfg;   /* read-only */
 247                         __u32 eptcfg;   /* E.PT, read-only */
 248                         __u32 tlbcfg[4];/* read-only */
 249                         __u32 tlbps[4]; /* read-only */
 250
 251                         __u32 eplc, epsc; /* E.PD */
 252                 } e;
 253                 __u8 pad[1020];
 254         } u;
 255 };
 256
 257 struct kvm_fpu {
 258         __u64 fpr[32];
 259 };
 260
 261 struct kvm_debug_exit_arch {
 262 };
 263
 264 /* for KVM_SET_GUEST_DEBUG */
 265 struct kvm_guest_debug_arch {
 266 };
 267
 268 #define KVM_REG_MASK            0x001f
 269 #define KVM_REG_EXT_MASK        0xffe0
 270 #define KVM_REG_GPR             0x0000
 271 #define KVM_REG_FPR             0x0020
 272 #define KVM_REG_QPR             0x0040
 273 #define KVM_REG_FQPR            0x0060
 274
 275 #define KVM_INTERRUPT_SET       -1U
 276 #define KVM_INTERRUPT_UNSET     -2U
 277 #define KVM_INTERRUPT_SET_LEVEL -3U
 278
 279 #define KVM_CPU_440             1
 280 #define KVM_CPU_E500V2          2
 281 #define KVM_CPU_3S_32           3
 282 #define KVM_CPU_3S_64           4
 283
 284 /* for KVM_CAP_SPAPR_TCE */
 285 struct kvm_create_spapr_tce {
 286         __u64 liobn;
 287         __u32 window_size;
 288 };
 289
 290 /* for KVM_ALLOCATE_RMA */
 291 struct kvm_allocate_rma {
 292         __u64 rma_size;
 293 };
 294
 295 struct kvm_book3e_206_tlb_entry {
 296         __u32 mas8;
 297         __u32 mas1;
 298         __u64 mas2;
 299         __u64 mas7_3;
 300 };
 301
 302 struct kvm_book3e_206_tlb_params {
 303         /*
 304          * For mmu types KVM_MMU_FSL_BOOKE_NOHV and KVM_MMU_FSL_BOOKE_HV:
 305          *
 306          * - The number of ways of TLB0 must be a power of two between 2 and
 307          *   16.
 308          * - TLB1 must be fully associative.
 309          * - The size of TLB0 must be a multiple of the number of ways, and
 310          *   the number of sets must be a power of two.
 311          * - The size of TLB1 may not exceed 64 entries.
 312          * - TLB0 supports 4 KiB pages.
 313          * - The page sizes supported by TLB1 are as indicated by
 314          *   TLB1CFG (if MMUCFG[MAVN] = 0) or TLB1PS (if MMUCFG[MAVN] = 1)
 315          *   as returned by KVM_GET_SREGS.
 316          * - TLB2 and TLB3 are reserved, and their entries in tlb_sizes[]
 317          *   and tlb_ways[] must be zero.
 318          *
 319          * tlb_ways[n] = tlb_sizes[n] means the array is fully associative.
 320          *
 321          * KVM will adjust TLBnCFG based on the sizes configured here,
 322          * though arrays greater than 2048 entries will have TLBnCFG[NENTRY]
 323          * set to zero.
 324          */
 325         __u32 tlb_sizes[4];
 326         __u32 tlb_ways[4];
 327         __u32 reserved[8];
 328 };
 329
 330 #endif /* __LINUX_KVM_POWERPC_H */