arch/arm/include/asm/kvm_arm.h

   1 /*
   2  * Copyright (C) 2012 - Virtual Open Systems and Columbia University
   3  * Author: Christoffer Dall <c.dall@virtualopensystems.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License, version 2, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 #ifndef __ARM_KVM_ARM_H__
  20 #define __ARM_KVM_ARM_H__
  21
  22 #include <linux/const.h>
  23 #include <linux/types.h>
  24
  25 /* Hyp Configuration Register (HCR) bits */
  26 #define HCR_TGE         (1 << 27)
  27 #define HCR_TVM         (1 << 26)
  28 #define HCR_TTLB        (1 << 25)
  29 #define HCR_TPU         (1 << 24)
  30 #define HCR_TPC         (1 << 23)
  31 #define HCR_TSW         (1 << 22)
  32 #define HCR_TAC         (1 << 21)
  33 #define HCR_TIDCP       (1 << 20)
  34 #define HCR_TSC         (1 << 19)
  35 #define HCR_TID3        (1 << 18)
  36 #define HCR_TID2        (1 << 17)
  37 #define HCR_TID1        (1 << 16)
  38 #define HCR_TID0        (1 << 15)
  39 #define HCR_TWE         (1 << 14)
  40 #define HCR_TWI         (1 << 13)
  41 #define HCR_DC          (1 << 12)
  42 #define HCR_BSU         (3 << 10)
  43 #define HCR_BSU_IS      (1 << 10)
  44 #define HCR_FB          (1 << 9)
  45 #define HCR_VA          (1 << 8)
  46 #define HCR_VI          (1 << 7)
  47 #define HCR_VF          (1 << 6)
  48 #define HCR_AMO         (1 << 5)
  49 #define HCR_IMO         (1 << 4)
  50 #define HCR_FMO         (1 << 3)
  51 #define HCR_PTW         (1 << 2)
  52 #define HCR_SWIO        (1 << 1)
  53 #define HCR_VM          1
  54
  55 /*
  56  * The bits we set in HCR:
  57  * TAC:         Trap ACTLR
  58  * TSC:         Trap SMC
  59  * TVM:         Trap VM ops (until MMU and caches are on)
  60  * TSW:         Trap cache operations by set/way
  61  * TWI:         Trap WFI
  62  * TWE:         Trap WFE
  63  * TIDCP:       Trap L2CTLR/L2ECTLR
  64  * BSU_IS:      Upgrade barriers to the inner shareable domain
  65  * FB:          Force broadcast of all maintainance operations
  66  * AMO:         Override CPSR.A and enable signaling with VA
  67  * IMO:         Override CPSR.I and enable signaling with VI
  68  * FMO:         Override CPSR.F and enable signaling with VF
  69  * SWIO:        Turn set/way invalidates into set/way clean+invalidate
  70  */
  71 #define HCR_GUEST_MASK (HCR_TSC | HCR_TSW | HCR_TWI | HCR_VM | HCR_BSU_IS | \
  72                         HCR_FB | HCR_TAC | HCR_AMO | HCR_IMO | HCR_FMO | \
  73                         HCR_TVM | HCR_TWE | HCR_SWIO | HCR_TIDCP)
  74
  75 /* System Control Register (SCTLR) bits */
  76 #define SCTLR_TE        (1 << 30)
  77 #define SCTLR_EE        (1 << 25)
  78 #define SCTLR_V         (1 << 13)
  79
  80 /* Hyp System Control Register (HSCTLR) bits */
  81 #define HSCTLR_TE       (1 << 30)
  82 #define HSCTLR_EE       (1 << 25)
  83 #define HSCTLR_FI       (1 << 21)
  84 #define HSCTLR_WXN      (1 << 19)
  85 #define HSCTLR_I        (1 << 12)
  86 #define HSCTLR_C        (1 << 2)
  87 #define HSCTLR_A        (1 << 1)
  88 #define HSCTLR_M        1
  89 #define HSCTLR_MASK     (HSCTLR_M | HSCTLR_A | HSCTLR_C | HSCTLR_I | \
  90                          HSCTLR_WXN | HSCTLR_FI | HSCTLR_EE | HSCTLR_TE)
  91
  92 /* TTBCR and HTCR Registers bits */
  93 #define TTBCR_EAE       (1 << 31)
  94 #define TTBCR_IMP       (1 << 30)
  95 #define TTBCR_SH1       (3 << 28)
  96 #define TTBCR_ORGN1     (3 << 26)
  97 #define TTBCR_IRGN1     (3 << 24)
  98 #define TTBCR_EPD1      (1 << 23)
  99 #define TTBCR_A1        (1 << 22)
 100 #define TTBCR_T1SZ      (7 << 16)
 101 #define TTBCR_SH0       (3 << 12)
 102 #define TTBCR_ORGN0     (3 << 10)
 103 #define TTBCR_IRGN0     (3 << 8)
 104 #define TTBCR_EPD0      (1 << 7)
 105 #define TTBCR_T0SZ      (7 << 0)
 106 #define HTCR_MASK       (TTBCR_T0SZ | TTBCR_IRGN0 | TTBCR_ORGN0 | TTBCR_SH0)
 107
 108 /* Hyp System Trap Register */
 109 #define HSTR_T(x)       (1 << x)
 110 #define HSTR_TTEE       (1 << 16)
 111 #define HSTR_TJDBX      (1 << 17)
 112
 113 /* Hyp Coprocessor Trap Register */
 114 #define HCPTR_TCP(x)    (1 << x)
 115 #define HCPTR_TCP_MASK  (0x3fff)
 116 #define HCPTR_TASE      (1 << 15)
 117 #define HCPTR_TTA       (1 << 20)
 118 #define HCPTR_TCPAC     (1 << 31)
 119
 120 /* Hyp Debug Configuration Register bits */
 121 #define HDCR_TDRA       (1 << 11)
 122 #define HDCR_TDOSA      (1 << 10)
 123 #define HDCR_TDA        (1 << 9)
 124 #define HDCR_TDE        (1 << 8)
 125 #define HDCR_HPME       (1 << 7)
 126 #define HDCR_TPM        (1 << 6)
 127 #define HDCR_TPMCR      (1 << 5)
 128 #define HDCR_HPMN_MASK  (0x1F)
 129
 130 /*
 131  * The architecture supports 40-bit IPA as input to the 2nd stage translations
 132  * and PTRS_PER_S2_PGD becomes 1024, because each entry covers 1GB of address
 133  * space.
 134  */
 135 #define KVM_PHYS_SHIFT  (40)
 136 #define KVM_PHYS_SIZE   (_AC(1, ULL) << KVM_PHYS_SHIFT)
 137 #define KVM_PHYS_MASK   (KVM_PHYS_SIZE - _AC(1, ULL))
 138 #define PTRS_PER_S2_PGD (_AC(1, ULL) << (KVM_PHYS_SHIFT - 30))
 139
 140 /* Virtualization Translation Control Register (VTCR) bits */
 141 #define VTCR_SH0        (3 << 12)
 142 #define VTCR_ORGN0      (3 << 10)
 143 #define VTCR_IRGN0      (3 << 8)
 144 #define VTCR_SL0        (3 << 6)
 145 #define VTCR_S          (1 << 4)
 146 #define VTCR_T0SZ       (0xf)
 147 #define VTCR_MASK       (VTCR_SH0 | VTCR_ORGN0 | VTCR_IRGN0 | VTCR_SL0 | \
 148                          VTCR_S | VTCR_T0SZ)
 149 #define VTCR_HTCR_SH    (VTCR_SH0 | VTCR_ORGN0 | VTCR_IRGN0)
 150 #define VTCR_SL_L2      (0 << 6)        /* Starting-level: 2 */
 151 #define VTCR_SL_L1      (1 << 6)        /* Starting-level: 1 */
 152 #define KVM_VTCR_SL0    VTCR_SL_L1
 153 /* stage-2 input address range defined as 2^(32-T0SZ) */
 154 #define KVM_T0SZ        (32 - KVM_PHYS_SHIFT)
 155 #define KVM_VTCR_T0SZ   (KVM_T0SZ & VTCR_T0SZ)
 156 #define KVM_VTCR_S      ((KVM_VTCR_T0SZ << 1) & VTCR_S)
 157
 158 /* Virtualization Translation Table Base Register (VTTBR) bits */
 159 #if KVM_VTCR_SL0 == VTCR_SL_L2  /* see ARM DDI 0406C: B4-1720 */
 160 #define VTTBR_X         (14 - KVM_T0SZ)
 161 #else
 162 #define VTTBR_X         (5 - KVM_T0SZ)
 163 #endif
 164 #define VTTBR_BADDR_SHIFT (VTTBR_X - 1)
 165 #define VTTBR_BADDR_MASK  (((_AC(1, ULL) << (40 - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT)
 166 #define VTTBR_VMID_SHIFT  _AC(48, ULL)
 167 #define VTTBR_VMID_MASK(size)   (_AT(u64, (1 << size) - 1) << VTTBR_VMID_SHIFT)
 168
 169 /* Hyp Syndrome Register (HSR) bits */
 170 #define HSR_EC_SHIFT    (26)
 171 #define HSR_EC          (_AC(0x3f, UL) << HSR_EC_SHIFT)
 172 #define HSR_IL          (_AC(1, UL) << 25)
 173 #define HSR_ISS         (HSR_IL - 1)
 174 #define HSR_ISV_SHIFT   (24)
 175 #define HSR_ISV         (_AC(1, UL) << HSR_ISV_SHIFT)
 176 #define HSR_SRT_SHIFT   (16)
 177 #define HSR_SRT_MASK    (0xf << HSR_SRT_SHIFT)
 178 #define HSR_FSC         (0x3f)
 179 #define HSR_FSC_TYPE    (0x3c)
 180 #define HSR_SSE         (1 << 21)
 181 #define HSR_WNR         (1 << 6)
 182 #define HSR_CV_SHIFT    (24)
 183 #define HSR_CV          (_AC(1, UL) << HSR_CV_SHIFT)
 184 #define HSR_COND_SHIFT  (20)
 185 #define HSR_COND        (_AC(0xf, UL) << HSR_COND_SHIFT)
 186
 187 #define FSC_FAULT       (0x04)
 188 #define FSC_ACCESS      (0x08)
 189 #define FSC_PERM        (0x0c)
 190
 191 /* Hyp Prefetch Fault Address Register (HPFAR/HDFAR) */
 192 #define HPFAR_MASK      (~0xf)
 193
 194 #define HSR_EC_UNKNOWN  (0x00)
 195 #define HSR_EC_WFI      (0x01)
 196 #define HSR_EC_CP15_32  (0x03)
 197 #define HSR_EC_CP15_64  (0x04)
 198 #define HSR_EC_CP14_MR  (0x05)
 199 #define HSR_EC_CP14_LS  (0x06)
 200 #define HSR_EC_CP_0_13  (0x07)
 201 #define HSR_EC_CP10_ID  (0x08)
 202 #define HSR_EC_JAZELLE  (0x09)
 203 #define HSR_EC_BXJ      (0x0A)
 204 #define HSR_EC_CP14_64  (0x0C)
 205 #define HSR_EC_SVC_HYP  (0x11)
 206 #define HSR_EC_HVC      (0x12)
 207 #define HSR_EC_SMC      (0x13)
 208 #define HSR_EC_IABT     (0x20)
 209 #define HSR_EC_IABT_HYP (0x21)
 210 #define HSR_EC_DABT     (0x24)
 211 #define HSR_EC_DABT_HYP (0x25)
 212 #define HSR_EC_MAX      (0x3f)
 213
 214 #define HSR_WFI_IS_WFE          (_AC(1, UL) << 0)
 215
 216 #define HSR_HVC_IMM_MASK        ((_AC(1, UL) << 16) - 1)
 217
 218 #define HSR_DABT_S1PTW          (_AC(1, UL) << 7)
 219 #define HSR_DABT_CM             (_AC(1, UL) << 8)
 220 #define HSR_DABT_EA             (_AC(1, UL) << 9)
 221
 222 #define kvm_arm_exception_type  \
 223         {0, "RESET" },          \
 224         {1, "UNDEFINED" },      \
 225         {2, "SOFTWARE" },       \
 226         {3, "PREF_ABORT" },     \
 227         {4, "DATA_ABORT" },     \
 228         {5, "IRQ" },            \
 229         {6, "FIQ" },            \
 230         {7, "HVC" }
 231
 232 #define HSRECN(x) { HSR_EC_##x, #x }
 233
 234 #define kvm_arm_exception_class \
 235         HSRECN(UNKNOWN), HSRECN(WFI), HSRECN(CP15_32), HSRECN(CP15_64), \
 236         HSRECN(CP14_MR), HSRECN(CP14_LS), HSRECN(CP_0_13), HSRECN(CP10_ID), \
 237         HSRECN(JAZELLE), HSRECN(BXJ), HSRECN(CP14_64), HSRECN(SVC_HYP), \
 238         HSRECN(HVC), HSRECN(SMC), HSRECN(IABT), HSRECN(IABT_HYP), \
 239         HSRECN(DABT), HSRECN(DABT_HYP)
 240
 241
 242 #endif /* __ARM_KVM_ARM_H__ */