1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * Copyright (C) 2012,2013 - ARM Ltd
4 * Author: Marc Zyngier <marc.zyngier@arm.com>
6 * Derived from arch/arm/include/uapi/asm/kvm.h:
7 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
8 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #define KVM_SPSR_EL1 0
27 #define KVM_SPSR_SVC KVM_SPSR_EL1
28 #define KVM_SPSR_ABT 1
29 #define KVM_SPSR_UND 2
30 #define KVM_SPSR_IRQ 3
31 #define KVM_SPSR_FIQ 4
35 #include <linux/psci.h>
36 #include <linux/types.h>
37 #include <asm/ptrace.h>
38 #include <asm/sve_context.h>
40 #define __KVM_HAVE_GUEST_DEBUG
41 #define __KVM_HAVE_IRQ_LINE
42 #define __KVM_HAVE_READONLY_MEM
43 #define __KVM_HAVE_VCPU_EVENTS
45 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
46 #define KVM_DIRTY_LOG_PAGE_OFFSET 64
48 #define KVM_REG_SIZE(id) \
49 (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
52 struct user_pt_regs regs
; /* sp = sp_el0 */
57 __u64 spsr
[KVM_NR_SPSR
];
59 struct user_fpsimd_state fp_regs
;
63 * Supported CPU Targets - Adding a new target type is not recommended,
64 * unless there are some special registers not supported by the
65 * genericv8 syreg table.
67 #define KVM_ARM_TARGET_AEM_V8 0
68 #define KVM_ARM_TARGET_FOUNDATION_V8 1
69 #define KVM_ARM_TARGET_CORTEX_A57 2
70 #define KVM_ARM_TARGET_XGENE_POTENZA 3
71 #define KVM_ARM_TARGET_CORTEX_A53 4
72 /* Generic ARM v8 target */
73 #define KVM_ARM_TARGET_GENERIC_V8 5
75 #define KVM_ARM_NUM_TARGETS 6
77 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */
78 #define KVM_ARM_DEVICE_TYPE_SHIFT 0
79 #define KVM_ARM_DEVICE_TYPE_MASK GENMASK(KVM_ARM_DEVICE_TYPE_SHIFT + 15, \
80 KVM_ARM_DEVICE_TYPE_SHIFT)
81 #define KVM_ARM_DEVICE_ID_SHIFT 16
82 #define KVM_ARM_DEVICE_ID_MASK GENMASK(KVM_ARM_DEVICE_ID_SHIFT + 15, \
83 KVM_ARM_DEVICE_ID_SHIFT)
85 /* Supported device IDs */
86 #define KVM_ARM_DEVICE_VGIC_V2 0
88 /* Supported VGIC address types */
89 #define KVM_VGIC_V2_ADDR_TYPE_DIST 0
90 #define KVM_VGIC_V2_ADDR_TYPE_CPU 1
92 #define KVM_VGIC_V2_DIST_SIZE 0x1000
93 #define KVM_VGIC_V2_CPU_SIZE 0x2000
95 /* Supported VGICv3 address types */
96 #define KVM_VGIC_V3_ADDR_TYPE_DIST 2
97 #define KVM_VGIC_V3_ADDR_TYPE_REDIST 3
98 #define KVM_VGIC_ITS_ADDR_TYPE 4
99 #define KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION 5
101 #define KVM_VGIC_V3_DIST_SIZE SZ_64K
102 #define KVM_VGIC_V3_REDIST_SIZE (2 * SZ_64K)
103 #define KVM_VGIC_V3_ITS_SIZE (2 * SZ_64K)
105 #define KVM_ARM_VCPU_POWER_OFF 0 /* CPU is started in OFF state */
106 #define KVM_ARM_VCPU_EL1_32BIT 1 /* CPU running a 32bit VM */
107 #define KVM_ARM_VCPU_PSCI_0_2 2 /* CPU uses PSCI v0.2 */
108 #define KVM_ARM_VCPU_PMU_V3 3 /* Support guest PMUv3 */
109 #define KVM_ARM_VCPU_SVE 4 /* enable SVE for this CPU */
110 #define KVM_ARM_VCPU_PTRAUTH_ADDRESS 5 /* VCPU uses address authentication */
111 #define KVM_ARM_VCPU_PTRAUTH_GENERIC 6 /* VCPU uses generic authentication */
113 struct kvm_vcpu_init
{
125 * See v8 ARM ARM D7.3: Debug Registers
127 * The architectural limit is 16 debug registers of each type although
128 * in practice there are usually less (see ID_AA64DFR0_EL1).
130 * Although the control registers are architecturally defined as 32
131 * bits wide we use a 64 bit structure here to keep parity with
132 * KVM_GET/SET_ONE_REG behaviour which treats all system registers as
133 * 64 bit values. It also allows for the possibility of the
134 * architecture expanding the control registers without having to
135 * change the userspace ABI.
137 #define KVM_ARM_MAX_DBG_REGS 16
138 struct kvm_guest_debug_arch
{
139 __u64 dbg_bcr
[KVM_ARM_MAX_DBG_REGS
];
140 __u64 dbg_bvr
[KVM_ARM_MAX_DBG_REGS
];
141 __u64 dbg_wcr
[KVM_ARM_MAX_DBG_REGS
];
142 __u64 dbg_wvr
[KVM_ARM_MAX_DBG_REGS
];
145 #define KVM_DEBUG_ARCH_HSR_HIGH_VALID (1 << 0)
146 struct kvm_debug_exit_arch
{
148 __u32 hsr_high
; /* ESR_EL2[61:32] */
149 __u64 far
; /* used for watchpoints */
153 * Architecture specific defines for kvm_guest_debug->control
156 #define KVM_GUESTDBG_USE_SW_BP (1 << 16)
157 #define KVM_GUESTDBG_USE_HW (1 << 17)
159 struct kvm_sync_regs
{
160 /* Used with KVM_CAP_ARM_USER_IRQ */
161 __u64 device_irq_level
;
165 * PMU filter structure. Describe a range of events with a particular
166 * action. To be used with KVM_ARM_VCPU_PMU_V3_FILTER.
168 struct kvm_pmu_event_filter
{
172 #define KVM_PMU_EVENT_ALLOW 0
173 #define KVM_PMU_EVENT_DENY 1
179 /* for KVM_GET/SET_VCPU_EVENTS */
180 struct kvm_vcpu_events
{
184 __u8 ext_dabt_pending
;
185 /* Align it to 8 bytes */
192 struct kvm_arm_copy_mte_tags
{
200 #define KVM_ARM_TAGS_TO_GUEST 0
201 #define KVM_ARM_TAGS_FROM_GUEST 1
203 /* If you need to interpret the index values, here is the key: */
204 #define KVM_REG_ARM_COPROC_MASK 0x000000000FFF0000
205 #define KVM_REG_ARM_COPROC_SHIFT 16
207 /* Normal registers are mapped as coprocessor 16. */
208 #define KVM_REG_ARM_CORE (0x0010 << KVM_REG_ARM_COPROC_SHIFT)
209 #define KVM_REG_ARM_CORE_REG(name) (offsetof(struct kvm_regs, name) / sizeof(__u32))
211 /* Some registers need more space to represent values. */
212 #define KVM_REG_ARM_DEMUX (0x0011 << KVM_REG_ARM_COPROC_SHIFT)
213 #define KVM_REG_ARM_DEMUX_ID_MASK 0x000000000000FF00
214 #define KVM_REG_ARM_DEMUX_ID_SHIFT 8
215 #define KVM_REG_ARM_DEMUX_ID_CCSIDR (0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT)
216 #define KVM_REG_ARM_DEMUX_VAL_MASK 0x00000000000000FF
217 #define KVM_REG_ARM_DEMUX_VAL_SHIFT 0
219 /* AArch64 system registers */
220 #define KVM_REG_ARM64_SYSREG (0x0013 << KVM_REG_ARM_COPROC_SHIFT)
221 #define KVM_REG_ARM64_SYSREG_OP0_MASK 0x000000000000c000
222 #define KVM_REG_ARM64_SYSREG_OP0_SHIFT 14
223 #define KVM_REG_ARM64_SYSREG_OP1_MASK 0x0000000000003800
224 #define KVM_REG_ARM64_SYSREG_OP1_SHIFT 11
225 #define KVM_REG_ARM64_SYSREG_CRN_MASK 0x0000000000000780
226 #define KVM_REG_ARM64_SYSREG_CRN_SHIFT 7
227 #define KVM_REG_ARM64_SYSREG_CRM_MASK 0x0000000000000078
228 #define KVM_REG_ARM64_SYSREG_CRM_SHIFT 3
229 #define KVM_REG_ARM64_SYSREG_OP2_MASK 0x0000000000000007
230 #define KVM_REG_ARM64_SYSREG_OP2_SHIFT 0
232 #define ARM64_SYS_REG_SHIFT_MASK(x,n) \
233 (((x) << KVM_REG_ARM64_SYSREG_ ## n ## _SHIFT) & \
234 KVM_REG_ARM64_SYSREG_ ## n ## _MASK)
236 #define __ARM64_SYS_REG(op0,op1,crn,crm,op2) \
237 (KVM_REG_ARM64 | KVM_REG_ARM64_SYSREG | \
238 ARM64_SYS_REG_SHIFT_MASK(op0, OP0) | \
239 ARM64_SYS_REG_SHIFT_MASK(op1, OP1) | \
240 ARM64_SYS_REG_SHIFT_MASK(crn, CRN) | \
241 ARM64_SYS_REG_SHIFT_MASK(crm, CRM) | \
242 ARM64_SYS_REG_SHIFT_MASK(op2, OP2))
244 #define ARM64_SYS_REG(...) (__ARM64_SYS_REG(__VA_ARGS__) | KVM_REG_SIZE_U64)
246 /* Physical Timer EL0 Registers */
247 #define KVM_REG_ARM_PTIMER_CTL ARM64_SYS_REG(3, 3, 14, 2, 1)
248 #define KVM_REG_ARM_PTIMER_CVAL ARM64_SYS_REG(3, 3, 14, 2, 2)
249 #define KVM_REG_ARM_PTIMER_CNT ARM64_SYS_REG(3, 3, 14, 0, 1)
252 * EL0 Virtual Timer Registers
255 * KVM_REG_ARM_TIMER_CVAL and KVM_REG_ARM_TIMER_CNT are not defined
256 * with the appropriate register encodings. Their values have been
257 * accidentally swapped. As this is set API, the definitions here
258 * must be used, rather than ones derived from the encodings.
260 #define KVM_REG_ARM_TIMER_CTL ARM64_SYS_REG(3, 3, 14, 3, 1)
261 #define KVM_REG_ARM_TIMER_CVAL ARM64_SYS_REG(3, 3, 14, 0, 2)
262 #define KVM_REG_ARM_TIMER_CNT ARM64_SYS_REG(3, 3, 14, 3, 2)
264 /* KVM-as-firmware specific pseudo-registers */
265 #define KVM_REG_ARM_FW (0x0014 << KVM_REG_ARM_COPROC_SHIFT)
266 #define KVM_REG_ARM_FW_REG(r) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \
267 KVM_REG_ARM_FW | ((r) & 0xffff))
268 #define KVM_REG_ARM_PSCI_VERSION KVM_REG_ARM_FW_REG(0)
269 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1 KVM_REG_ARM_FW_REG(1)
270 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_NOT_AVAIL 0
271 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_AVAIL 1
272 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_NOT_REQUIRED 2
275 * Only two states can be presented by the host kernel:
276 * - NOT_REQUIRED: the guest doesn't need to do anything
277 * - NOT_AVAIL: the guest isn't mitigated (it can still use SSBS if available)
279 * All the other values are deprecated. The host still accepts all
280 * values (they are ABI), but will narrow them to the above two.
282 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2 KVM_REG_ARM_FW_REG(2)
283 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_AVAIL 0
284 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_UNKNOWN 1
285 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_AVAIL 2
286 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_REQUIRED 3
287 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_ENABLED (1U << 4)
289 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3 KVM_REG_ARM_FW_REG(3)
290 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_NOT_AVAIL 0
291 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_AVAIL 1
292 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_NOT_REQUIRED 2
295 #define KVM_REG_ARM64_SVE (0x15 << KVM_REG_ARM_COPROC_SHIFT)
297 /* Z- and P-regs occupy blocks at the following offsets within this range: */
298 #define KVM_REG_ARM64_SVE_ZREG_BASE 0
299 #define KVM_REG_ARM64_SVE_PREG_BASE 0x400
300 #define KVM_REG_ARM64_SVE_FFR_BASE 0x600
302 #define KVM_ARM64_SVE_NUM_ZREGS __SVE_NUM_ZREGS
303 #define KVM_ARM64_SVE_NUM_PREGS __SVE_NUM_PREGS
305 #define KVM_ARM64_SVE_MAX_SLICES 32
307 #define KVM_REG_ARM64_SVE_ZREG(n, i) \
308 (KVM_REG_ARM64 | KVM_REG_ARM64_SVE | KVM_REG_ARM64_SVE_ZREG_BASE | \
309 KVM_REG_SIZE_U2048 | \
310 (((n) & (KVM_ARM64_SVE_NUM_ZREGS - 1)) << 5) | \
311 ((i) & (KVM_ARM64_SVE_MAX_SLICES - 1)))
313 #define KVM_REG_ARM64_SVE_PREG(n, i) \
314 (KVM_REG_ARM64 | KVM_REG_ARM64_SVE | KVM_REG_ARM64_SVE_PREG_BASE | \
315 KVM_REG_SIZE_U256 | \
316 (((n) & (KVM_ARM64_SVE_NUM_PREGS - 1)) << 5) | \
317 ((i) & (KVM_ARM64_SVE_MAX_SLICES - 1)))
319 #define KVM_REG_ARM64_SVE_FFR(i) \
320 (KVM_REG_ARM64 | KVM_REG_ARM64_SVE | KVM_REG_ARM64_SVE_FFR_BASE | \
321 KVM_REG_SIZE_U256 | \
322 ((i) & (KVM_ARM64_SVE_MAX_SLICES - 1)))
325 * Register values for KVM_REG_ARM64_SVE_ZREG(), KVM_REG_ARM64_SVE_PREG() and
326 * KVM_REG_ARM64_SVE_FFR() are represented in memory in an endianness-
327 * invariant layout which differs from the layout used for the FPSIMD
328 * V-registers on big-endian systems: see sigcontext.h for more explanation.
331 #define KVM_ARM64_SVE_VQ_MIN __SVE_VQ_MIN
332 #define KVM_ARM64_SVE_VQ_MAX __SVE_VQ_MAX
334 /* Vector lengths pseudo-register: */
335 #define KVM_REG_ARM64_SVE_VLS (KVM_REG_ARM64 | KVM_REG_ARM64_SVE | \
336 KVM_REG_SIZE_U512 | 0xffff)
337 #define KVM_ARM64_SVE_VLS_WORDS \
338 ((KVM_ARM64_SVE_VQ_MAX - KVM_ARM64_SVE_VQ_MIN) / 64 + 1)
340 /* Bitmap feature firmware registers */
341 #define KVM_REG_ARM_FW_FEAT_BMAP (0x0016 << KVM_REG_ARM_COPROC_SHIFT)
342 #define KVM_REG_ARM_FW_FEAT_BMAP_REG(r) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \
343 KVM_REG_ARM_FW_FEAT_BMAP | \
346 #define KVM_REG_ARM_STD_BMAP KVM_REG_ARM_FW_FEAT_BMAP_REG(0)
349 KVM_REG_ARM_STD_BIT_TRNG_V1_0
= 0,
352 #define KVM_REG_ARM_STD_HYP_BMAP KVM_REG_ARM_FW_FEAT_BMAP_REG(1)
355 KVM_REG_ARM_STD_HYP_BIT_PV_TIME
= 0,
358 #define KVM_REG_ARM_VENDOR_HYP_BMAP KVM_REG_ARM_FW_FEAT_BMAP_REG(2)
361 KVM_REG_ARM_VENDOR_HYP_BIT_FUNC_FEAT
= 0,
362 KVM_REG_ARM_VENDOR_HYP_BIT_PTP
= 1,
365 /* Device Control API: ARM VGIC */
366 #define KVM_DEV_ARM_VGIC_GRP_ADDR 0
367 #define KVM_DEV_ARM_VGIC_GRP_DIST_REGS 1
368 #define KVM_DEV_ARM_VGIC_GRP_CPU_REGS 2
369 #define KVM_DEV_ARM_VGIC_CPUID_SHIFT 32
370 #define KVM_DEV_ARM_VGIC_CPUID_MASK (0xffULL << KVM_DEV_ARM_VGIC_CPUID_SHIFT)
371 #define KVM_DEV_ARM_VGIC_V3_MPIDR_SHIFT 32
372 #define KVM_DEV_ARM_VGIC_V3_MPIDR_MASK \
373 (0xffffffffULL << KVM_DEV_ARM_VGIC_V3_MPIDR_SHIFT)
374 #define KVM_DEV_ARM_VGIC_OFFSET_SHIFT 0
375 #define KVM_DEV_ARM_VGIC_OFFSET_MASK (0xffffffffULL << KVM_DEV_ARM_VGIC_OFFSET_SHIFT)
376 #define KVM_DEV_ARM_VGIC_SYSREG_INSTR_MASK (0xffff)
377 #define KVM_DEV_ARM_VGIC_GRP_NR_IRQS 3
378 #define KVM_DEV_ARM_VGIC_GRP_CTRL 4
379 #define KVM_DEV_ARM_VGIC_GRP_REDIST_REGS 5
380 #define KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS 6
381 #define KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO 7
382 #define KVM_DEV_ARM_VGIC_GRP_ITS_REGS 8
383 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT 10
384 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_MASK \
385 (0x3fffffULL << KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT)
386 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INTID_MASK 0x3ff
387 #define VGIC_LEVEL_INFO_LINE_LEVEL 0
389 #define KVM_DEV_ARM_VGIC_CTRL_INIT 0
390 #define KVM_DEV_ARM_ITS_SAVE_TABLES 1
391 #define KVM_DEV_ARM_ITS_RESTORE_TABLES 2
392 #define KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES 3
393 #define KVM_DEV_ARM_ITS_CTRL_RESET 4
395 /* Device Control API on vcpu fd */
396 #define KVM_ARM_VCPU_PMU_V3_CTRL 0
397 #define KVM_ARM_VCPU_PMU_V3_IRQ 0
398 #define KVM_ARM_VCPU_PMU_V3_INIT 1
399 #define KVM_ARM_VCPU_PMU_V3_FILTER 2
400 #define KVM_ARM_VCPU_PMU_V3_SET_PMU 3
401 #define KVM_ARM_VCPU_TIMER_CTRL 1
402 #define KVM_ARM_VCPU_TIMER_IRQ_VTIMER 0
403 #define KVM_ARM_VCPU_TIMER_IRQ_PTIMER 1
404 #define KVM_ARM_VCPU_PVTIME_CTRL 2
405 #define KVM_ARM_VCPU_PVTIME_IPA 0
407 /* KVM_IRQ_LINE irq field index values */
408 #define KVM_ARM_IRQ_VCPU2_SHIFT 28
409 #define KVM_ARM_IRQ_VCPU2_MASK 0xf
410 #define KVM_ARM_IRQ_TYPE_SHIFT 24
411 #define KVM_ARM_IRQ_TYPE_MASK 0xf
412 #define KVM_ARM_IRQ_VCPU_SHIFT 16
413 #define KVM_ARM_IRQ_VCPU_MASK 0xff
414 #define KVM_ARM_IRQ_NUM_SHIFT 0
415 #define KVM_ARM_IRQ_NUM_MASK 0xffff
418 #define KVM_ARM_IRQ_TYPE_CPU 0
419 #define KVM_ARM_IRQ_TYPE_SPI 1
420 #define KVM_ARM_IRQ_TYPE_PPI 2
422 /* out-of-kernel GIC cpu interrupt injection irq_number field */
423 #define KVM_ARM_IRQ_CPU_IRQ 0
424 #define KVM_ARM_IRQ_CPU_FIQ 1
427 * This used to hold the highest supported SPI, but it is now obsolete
428 * and only here to provide source code level compatibility with older
429 * userland. The highest SPI number can be set via KVM_DEV_ARM_VGIC_GRP_NR_IRQS.
431 #define KVM_ARM_IRQ_GIC_MAX 127
433 /* One single KVM irqchip, ie. the VGIC */
434 #define KVM_NR_IRQCHIPS 1
437 #define KVM_PSCI_FN_BASE 0x95c1ba5e
438 #define KVM_PSCI_FN(n) (KVM_PSCI_FN_BASE + (n))
440 #define KVM_PSCI_FN_CPU_SUSPEND KVM_PSCI_FN(0)
441 #define KVM_PSCI_FN_CPU_OFF KVM_PSCI_FN(1)
442 #define KVM_PSCI_FN_CPU_ON KVM_PSCI_FN(2)
443 #define KVM_PSCI_FN_MIGRATE KVM_PSCI_FN(3)
445 #define KVM_PSCI_RET_SUCCESS PSCI_RET_SUCCESS
446 #define KVM_PSCI_RET_NI PSCI_RET_NOT_SUPPORTED
447 #define KVM_PSCI_RET_INVAL PSCI_RET_INVALID_PARAMS
448 #define KVM_PSCI_RET_DENIED PSCI_RET_DENIED
450 /* arm64-specific kvm_run::system_event flags */
452 * Reset caused by a PSCI v1.1 SYSTEM_RESET2 call.
453 * Valid only when the system event has a type of KVM_SYSTEM_EVENT_RESET.
455 #define KVM_SYSTEM_EVENT_RESET_FLAG_PSCI_RESET2 (1ULL << 0)
457 /* run->fail_entry.hardware_entry_failure_reason codes. */
458 #define KVM_EXIT_FAIL_ENTRY_CPU_UNSUPPORTED (1ULL << 0)
462 #endif /* __ARM_KVM_H__ */