Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 1 | /* |
| 2 | * VGIC: KVM DEVICE API |
| 3 | * |
| 4 | * Copyright (C) 2015 ARM Ltd. |
| 5 | * Author: Marc Zyngier <marc.zyngier@arm.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | */ |
| 16 | #include <linux/kvm_host.h> |
| 17 | #include <kvm/arm_vgic.h> |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 18 | #include <linux/uaccess.h> |
Eric Auger | e2c1f9a | 2015-12-21 16:36:04 +0100 | [diff] [blame] | 19 | #include <asm/kvm_mmu.h> |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 20 | #include "vgic.h" |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 21 | |
| 22 | /* common helpers */ |
| 23 | |
Andre Przywara | 1085fdc | 2016-07-15 12:43:31 +0100 | [diff] [blame] | 24 | int vgic_check_ioaddr(struct kvm *kvm, phys_addr_t *ioaddr, |
| 25 | phys_addr_t addr, phys_addr_t alignment) |
Eric Auger | e2c1f9a | 2015-12-21 16:36:04 +0100 | [diff] [blame] | 26 | { |
| 27 | if (addr & ~KVM_PHYS_MASK) |
| 28 | return -E2BIG; |
| 29 | |
| 30 | if (!IS_ALIGNED(addr, alignment)) |
| 31 | return -EINVAL; |
| 32 | |
| 33 | if (!IS_VGIC_ADDR_UNDEF(*ioaddr)) |
| 34 | return -EEXIST; |
| 35 | |
| 36 | return 0; |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * kvm_vgic_addr - set or get vgic VM base addresses |
| 41 | * @kvm: pointer to the vm struct |
| 42 | * @type: the VGIC addr type, one of KVM_VGIC_V[23]_ADDR_TYPE_XXX |
| 43 | * @addr: pointer to address value |
| 44 | * @write: if true set the address in the VM address space, if false read the |
| 45 | * address |
| 46 | * |
| 47 | * Set or get the vgic base addresses for the distributor and the virtual CPU |
| 48 | * interface in the VM physical address space. These addresses are properties |
| 49 | * of the emulated core/SoC and therefore user space initially knows this |
| 50 | * information. |
| 51 | * Check them for sanity (alignment, double assignment). We can't check for |
| 52 | * overlapping regions in case of a virtual GICv3 here, since we don't know |
| 53 | * the number of VCPUs yet, so we defer this check to map_resources(). |
| 54 | */ |
| 55 | int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write) |
| 56 | { |
| 57 | int r = 0; |
| 58 | struct vgic_dist *vgic = &kvm->arch.vgic; |
| 59 | int type_needed; |
| 60 | phys_addr_t *addr_ptr, alignment; |
| 61 | |
| 62 | mutex_lock(&kvm->lock); |
| 63 | switch (type) { |
| 64 | case KVM_VGIC_V2_ADDR_TYPE_DIST: |
| 65 | type_needed = KVM_DEV_TYPE_ARM_VGIC_V2; |
| 66 | addr_ptr = &vgic->vgic_dist_base; |
| 67 | alignment = SZ_4K; |
| 68 | break; |
| 69 | case KVM_VGIC_V2_ADDR_TYPE_CPU: |
| 70 | type_needed = KVM_DEV_TYPE_ARM_VGIC_V2; |
| 71 | addr_ptr = &vgic->vgic_cpu_base; |
| 72 | alignment = SZ_4K; |
| 73 | break; |
| 74 | #ifdef CONFIG_KVM_ARM_VGIC_V3 |
| 75 | case KVM_VGIC_V3_ADDR_TYPE_DIST: |
| 76 | type_needed = KVM_DEV_TYPE_ARM_VGIC_V3; |
| 77 | addr_ptr = &vgic->vgic_dist_base; |
| 78 | alignment = SZ_64K; |
| 79 | break; |
| 80 | case KVM_VGIC_V3_ADDR_TYPE_REDIST: |
| 81 | type_needed = KVM_DEV_TYPE_ARM_VGIC_V3; |
| 82 | addr_ptr = &vgic->vgic_redist_base; |
| 83 | alignment = SZ_64K; |
| 84 | break; |
| 85 | #endif |
| 86 | default: |
| 87 | r = -ENODEV; |
| 88 | goto out; |
| 89 | } |
| 90 | |
| 91 | if (vgic->vgic_model != type_needed) { |
| 92 | r = -ENODEV; |
| 93 | goto out; |
| 94 | } |
| 95 | |
| 96 | if (write) { |
| 97 | r = vgic_check_ioaddr(kvm, addr_ptr, *addr, alignment); |
| 98 | if (!r) |
| 99 | *addr_ptr = *addr; |
| 100 | } else { |
| 101 | *addr = *addr_ptr; |
| 102 | } |
| 103 | |
| 104 | out: |
| 105 | mutex_unlock(&kvm->lock); |
| 106 | return r; |
| 107 | } |
| 108 | |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 109 | static int vgic_set_common_attr(struct kvm_device *dev, |
| 110 | struct kvm_device_attr *attr) |
| 111 | { |
Eric Auger | afcc7c5 | 2015-12-21 17:22:05 +0100 | [diff] [blame] | 112 | int r; |
| 113 | |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 114 | switch (attr->group) { |
Eric Auger | e5c3029 | 2015-12-21 17:27:39 +0100 | [diff] [blame] | 115 | case KVM_DEV_ARM_VGIC_GRP_ADDR: { |
| 116 | u64 __user *uaddr = (u64 __user *)(long)attr->addr; |
| 117 | u64 addr; |
| 118 | unsigned long type = (unsigned long)attr->attr; |
| 119 | |
| 120 | if (copy_from_user(&addr, uaddr, sizeof(addr))) |
| 121 | return -EFAULT; |
| 122 | |
| 123 | r = kvm_vgic_addr(dev->kvm, type, &addr, true); |
| 124 | return (r == -ENODEV) ? -ENXIO : r; |
| 125 | } |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 126 | case KVM_DEV_ARM_VGIC_GRP_NR_IRQS: { |
| 127 | u32 __user *uaddr = (u32 __user *)(long)attr->addr; |
| 128 | u32 val; |
| 129 | int ret = 0; |
| 130 | |
| 131 | if (get_user(val, uaddr)) |
| 132 | return -EFAULT; |
| 133 | |
| 134 | /* |
| 135 | * We require: |
| 136 | * - at least 32 SPIs on top of the 16 SGIs and 16 PPIs |
| 137 | * - at most 1024 interrupts |
| 138 | * - a multiple of 32 interrupts |
| 139 | */ |
| 140 | if (val < (VGIC_NR_PRIVATE_IRQS + 32) || |
| 141 | val > VGIC_MAX_RESERVED || |
| 142 | (val & 31)) |
| 143 | return -EINVAL; |
| 144 | |
| 145 | mutex_lock(&dev->kvm->lock); |
| 146 | |
| 147 | if (vgic_ready(dev->kvm) || dev->kvm->arch.vgic.nr_spis) |
| 148 | ret = -EBUSY; |
| 149 | else |
| 150 | dev->kvm->arch.vgic.nr_spis = |
| 151 | val - VGIC_NR_PRIVATE_IRQS; |
| 152 | |
| 153 | mutex_unlock(&dev->kvm->lock); |
| 154 | |
| 155 | return ret; |
| 156 | } |
Eric Auger | afcc7c5 | 2015-12-21 17:22:05 +0100 | [diff] [blame] | 157 | case KVM_DEV_ARM_VGIC_GRP_CTRL: { |
| 158 | switch (attr->attr) { |
| 159 | case KVM_DEV_ARM_VGIC_CTRL_INIT: |
| 160 | mutex_lock(&dev->kvm->lock); |
| 161 | r = vgic_init(dev->kvm); |
| 162 | mutex_unlock(&dev->kvm->lock); |
| 163 | return r; |
| 164 | } |
| 165 | break; |
| 166 | } |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | return -ENXIO; |
| 170 | } |
| 171 | |
| 172 | static int vgic_get_common_attr(struct kvm_device *dev, |
| 173 | struct kvm_device_attr *attr) |
| 174 | { |
| 175 | int r = -ENXIO; |
| 176 | |
| 177 | switch (attr->group) { |
Eric Auger | e5c3029 | 2015-12-21 17:27:39 +0100 | [diff] [blame] | 178 | case KVM_DEV_ARM_VGIC_GRP_ADDR: { |
| 179 | u64 __user *uaddr = (u64 __user *)(long)attr->addr; |
| 180 | u64 addr; |
| 181 | unsigned long type = (unsigned long)attr->attr; |
| 182 | |
| 183 | r = kvm_vgic_addr(dev->kvm, type, &addr, false); |
| 184 | if (r) |
| 185 | return (r == -ENODEV) ? -ENXIO : r; |
| 186 | |
| 187 | if (copy_to_user(uaddr, &addr, sizeof(addr))) |
| 188 | return -EFAULT; |
| 189 | break; |
| 190 | } |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 191 | case KVM_DEV_ARM_VGIC_GRP_NR_IRQS: { |
| 192 | u32 __user *uaddr = (u32 __user *)(long)attr->addr; |
| 193 | |
| 194 | r = put_user(dev->kvm->arch.vgic.nr_spis + |
| 195 | VGIC_NR_PRIVATE_IRQS, uaddr); |
| 196 | break; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | return r; |
| 201 | } |
| 202 | |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 203 | static int vgic_create(struct kvm_device *dev, u32 type) |
| 204 | { |
| 205 | return kvm_vgic_create(dev->kvm, type); |
| 206 | } |
| 207 | |
| 208 | static void vgic_destroy(struct kvm_device *dev) |
| 209 | { |
| 210 | kfree(dev); |
| 211 | } |
| 212 | |
Andre Przywara | 42c8870 | 2016-07-15 12:43:23 +0100 | [diff] [blame] | 213 | int kvm_register_vgic_device(unsigned long type) |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 214 | { |
Andre Przywara | 42c8870 | 2016-07-15 12:43:23 +0100 | [diff] [blame] | 215 | int ret = -ENODEV; |
| 216 | |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 217 | switch (type) { |
| 218 | case KVM_DEV_TYPE_ARM_VGIC_V2: |
Andre Przywara | 42c8870 | 2016-07-15 12:43:23 +0100 | [diff] [blame] | 219 | ret = kvm_register_device_ops(&kvm_arm_vgic_v2_ops, |
| 220 | KVM_DEV_TYPE_ARM_VGIC_V2); |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 221 | break; |
| 222 | #ifdef CONFIG_KVM_ARM_VGIC_V3 |
| 223 | case KVM_DEV_TYPE_ARM_VGIC_V3: |
Andre Przywara | 42c8870 | 2016-07-15 12:43:23 +0100 | [diff] [blame] | 224 | ret = kvm_register_device_ops(&kvm_arm_vgic_v3_ops, |
| 225 | KVM_DEV_TYPE_ARM_VGIC_V3); |
Vladimir Murzin | 7a1ff70 | 2016-09-12 15:49:18 +0100 | [diff] [blame^] | 226 | |
| 227 | #ifdef CONFIG_KVM_ARM_VGIC_V3_ITS |
Andre Przywara | 0e4e82f | 2016-07-15 12:43:38 +0100 | [diff] [blame] | 228 | if (ret) |
| 229 | break; |
| 230 | ret = kvm_vgic_register_its_device(); |
Vladimir Murzin | 7a1ff70 | 2016-09-12 15:49:18 +0100 | [diff] [blame^] | 231 | #endif |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 232 | break; |
| 233 | #endif |
| 234 | } |
Andre Przywara | 42c8870 | 2016-07-15 12:43:23 +0100 | [diff] [blame] | 235 | |
| 236 | return ret; |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 237 | } |
| 238 | |
Christoffer Dall | ba7b916 | 2016-08-16 16:48:20 +0200 | [diff] [blame] | 239 | struct vgic_reg_attr { |
| 240 | struct kvm_vcpu *vcpu; |
| 241 | gpa_t addr; |
| 242 | }; |
| 243 | |
| 244 | static int parse_vgic_v2_attr(struct kvm_device *dev, |
| 245 | struct kvm_device_attr *attr, |
| 246 | struct vgic_reg_attr *reg_attr) |
| 247 | { |
| 248 | int cpuid; |
| 249 | |
| 250 | cpuid = (attr->attr & KVM_DEV_ARM_VGIC_CPUID_MASK) >> |
| 251 | KVM_DEV_ARM_VGIC_CPUID_SHIFT; |
| 252 | |
| 253 | if (cpuid >= atomic_read(&dev->kvm->online_vcpus)) |
| 254 | return -EINVAL; |
| 255 | |
| 256 | reg_attr->vcpu = kvm_get_vcpu(dev->kvm, cpuid); |
| 257 | reg_attr->addr = attr->attr & KVM_DEV_ARM_VGIC_OFFSET_MASK; |
| 258 | |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | /* unlocks vcpus from @vcpu_lock_idx and smaller */ |
| 263 | static void unlock_vcpus(struct kvm *kvm, int vcpu_lock_idx) |
| 264 | { |
| 265 | struct kvm_vcpu *tmp_vcpu; |
| 266 | |
| 267 | for (; vcpu_lock_idx >= 0; vcpu_lock_idx--) { |
| 268 | tmp_vcpu = kvm_get_vcpu(kvm, vcpu_lock_idx); |
| 269 | mutex_unlock(&tmp_vcpu->mutex); |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | static void unlock_all_vcpus(struct kvm *kvm) |
| 274 | { |
| 275 | unlock_vcpus(kvm, atomic_read(&kvm->online_vcpus) - 1); |
| 276 | } |
| 277 | |
| 278 | /* Returns true if all vcpus were locked, false otherwise */ |
| 279 | static bool lock_all_vcpus(struct kvm *kvm) |
| 280 | { |
| 281 | struct kvm_vcpu *tmp_vcpu; |
| 282 | int c; |
| 283 | |
| 284 | /* |
| 285 | * Any time a vcpu is run, vcpu_load is called which tries to grab the |
| 286 | * vcpu->mutex. By grabbing the vcpu->mutex of all VCPUs we ensure |
| 287 | * that no other VCPUs are run and fiddle with the vgic state while we |
| 288 | * access it. |
| 289 | */ |
| 290 | kvm_for_each_vcpu(c, tmp_vcpu, kvm) { |
| 291 | if (!mutex_trylock(&tmp_vcpu->mutex)) { |
| 292 | unlock_vcpus(kvm, c - 1); |
| 293 | return false; |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | return true; |
| 298 | } |
| 299 | |
Christoffer Dall | 1fe0009 | 2016-08-16 16:52:14 +0200 | [diff] [blame] | 300 | /** |
| 301 | * vgic_attr_regs_access_v2 - allows user space to access VGIC v2 state |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 302 | * |
Christoffer Dall | 1fe0009 | 2016-08-16 16:52:14 +0200 | [diff] [blame] | 303 | * @dev: kvm device handle |
| 304 | * @attr: kvm device attribute |
| 305 | * @reg: address the value is read or written |
| 306 | * @is_write: true if userspace is writing a register |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 307 | */ |
Christoffer Dall | 1fe0009 | 2016-08-16 16:52:14 +0200 | [diff] [blame] | 308 | static int vgic_attr_regs_access_v2(struct kvm_device *dev, |
| 309 | struct kvm_device_attr *attr, |
| 310 | u32 *reg, bool is_write) |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 311 | { |
Christoffer Dall | ba7b916 | 2016-08-16 16:48:20 +0200 | [diff] [blame] | 312 | struct vgic_reg_attr reg_attr; |
Andre Przywara | 7d450e2 | 2015-12-01 22:36:37 +0000 | [diff] [blame] | 313 | gpa_t addr; |
Christoffer Dall | ba7b916 | 2016-08-16 16:48:20 +0200 | [diff] [blame] | 314 | struct kvm_vcpu *vcpu; |
| 315 | int ret; |
Andre Przywara | 7d450e2 | 2015-12-01 22:36:37 +0000 | [diff] [blame] | 316 | |
Christoffer Dall | ba7b916 | 2016-08-16 16:48:20 +0200 | [diff] [blame] | 317 | ret = parse_vgic_v2_attr(dev, attr, ®_attr); |
| 318 | if (ret) |
| 319 | return ret; |
| 320 | |
| 321 | vcpu = reg_attr.vcpu; |
| 322 | addr = reg_attr.addr; |
Andre Przywara | 7d450e2 | 2015-12-01 22:36:37 +0000 | [diff] [blame] | 323 | |
| 324 | mutex_lock(&dev->kvm->lock); |
| 325 | |
| 326 | ret = vgic_init(dev->kvm); |
| 327 | if (ret) |
| 328 | goto out; |
| 329 | |
Christoffer Dall | ba7b916 | 2016-08-16 16:48:20 +0200 | [diff] [blame] | 330 | if (!lock_all_vcpus(dev->kvm)) { |
| 331 | ret = -EBUSY; |
Andre Przywara | 7d450e2 | 2015-12-01 22:36:37 +0000 | [diff] [blame] | 332 | goto out; |
| 333 | } |
| 334 | |
Andre Przywara | 7d450e2 | 2015-12-01 22:36:37 +0000 | [diff] [blame] | 335 | switch (attr->group) { |
| 336 | case KVM_DEV_ARM_VGIC_GRP_CPU_REGS: |
Andre Przywara | 878c569 | 2015-12-03 11:48:42 +0000 | [diff] [blame] | 337 | ret = vgic_v2_cpuif_uaccess(vcpu, is_write, addr, reg); |
Andre Przywara | 7d450e2 | 2015-12-01 22:36:37 +0000 | [diff] [blame] | 338 | break; |
| 339 | case KVM_DEV_ARM_VGIC_GRP_DIST_REGS: |
| 340 | ret = vgic_v2_dist_uaccess(vcpu, is_write, addr, reg); |
| 341 | break; |
| 342 | default: |
| 343 | ret = -EINVAL; |
| 344 | break; |
| 345 | } |
| 346 | |
Christoffer Dall | ba7b916 | 2016-08-16 16:48:20 +0200 | [diff] [blame] | 347 | unlock_all_vcpus(dev->kvm); |
Andre Przywara | 7d450e2 | 2015-12-01 22:36:37 +0000 | [diff] [blame] | 348 | out: |
Andre Przywara | 7d450e2 | 2015-12-01 22:36:37 +0000 | [diff] [blame] | 349 | mutex_unlock(&dev->kvm->lock); |
| 350 | return ret; |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 351 | } |
| 352 | |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 353 | static int vgic_v2_set_attr(struct kvm_device *dev, |
| 354 | struct kvm_device_attr *attr) |
| 355 | { |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 356 | int ret; |
| 357 | |
| 358 | ret = vgic_set_common_attr(dev, attr); |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 359 | if (ret != -ENXIO) |
| 360 | return ret; |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 361 | |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 362 | switch (attr->group) { |
| 363 | case KVM_DEV_ARM_VGIC_GRP_DIST_REGS: |
| 364 | case KVM_DEV_ARM_VGIC_GRP_CPU_REGS: { |
| 365 | u32 __user *uaddr = (u32 __user *)(long)attr->addr; |
| 366 | u32 reg; |
| 367 | |
| 368 | if (get_user(reg, uaddr)) |
| 369 | return -EFAULT; |
| 370 | |
Christoffer Dall | 1fe0009 | 2016-08-16 16:52:14 +0200 | [diff] [blame] | 371 | return vgic_attr_regs_access_v2(dev, attr, ®, true); |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 372 | } |
| 373 | } |
| 374 | |
| 375 | return -ENXIO; |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | static int vgic_v2_get_attr(struct kvm_device *dev, |
| 379 | struct kvm_device_attr *attr) |
| 380 | { |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 381 | int ret; |
| 382 | |
| 383 | ret = vgic_get_common_attr(dev, attr); |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 384 | if (ret != -ENXIO) |
| 385 | return ret; |
| 386 | |
| 387 | switch (attr->group) { |
| 388 | case KVM_DEV_ARM_VGIC_GRP_DIST_REGS: |
| 389 | case KVM_DEV_ARM_VGIC_GRP_CPU_REGS: { |
| 390 | u32 __user *uaddr = (u32 __user *)(long)attr->addr; |
| 391 | u32 reg = 0; |
| 392 | |
Christoffer Dall | 1fe0009 | 2016-08-16 16:52:14 +0200 | [diff] [blame] | 393 | ret = vgic_attr_regs_access_v2(dev, attr, ®, false); |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 394 | if (ret) |
| 395 | return ret; |
| 396 | return put_user(reg, uaddr); |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | return -ENXIO; |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | static int vgic_v2_has_attr(struct kvm_device *dev, |
| 404 | struct kvm_device_attr *attr) |
| 405 | { |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 406 | switch (attr->group) { |
Eric Auger | e5c3029 | 2015-12-21 17:27:39 +0100 | [diff] [blame] | 407 | case KVM_DEV_ARM_VGIC_GRP_ADDR: |
| 408 | switch (attr->attr) { |
| 409 | case KVM_VGIC_V2_ADDR_TYPE_DIST: |
| 410 | case KVM_VGIC_V2_ADDR_TYPE_CPU: |
| 411 | return 0; |
| 412 | } |
| 413 | break; |
Eric Auger | f94591e | 2015-12-21 17:34:52 +0100 | [diff] [blame] | 414 | case KVM_DEV_ARM_VGIC_GRP_DIST_REGS: |
| 415 | case KVM_DEV_ARM_VGIC_GRP_CPU_REGS: |
| 416 | return vgic_v2_has_attr_regs(dev, attr); |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 417 | case KVM_DEV_ARM_VGIC_GRP_NR_IRQS: |
| 418 | return 0; |
Eric Auger | afcc7c5 | 2015-12-21 17:22:05 +0100 | [diff] [blame] | 419 | case KVM_DEV_ARM_VGIC_GRP_CTRL: |
| 420 | switch (attr->attr) { |
| 421 | case KVM_DEV_ARM_VGIC_CTRL_INIT: |
| 422 | return 0; |
| 423 | } |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 424 | } |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 425 | return -ENXIO; |
| 426 | } |
| 427 | |
| 428 | struct kvm_device_ops kvm_arm_vgic_v2_ops = { |
| 429 | .name = "kvm-arm-vgic-v2", |
| 430 | .create = vgic_create, |
| 431 | .destroy = vgic_destroy, |
| 432 | .set_attr = vgic_v2_set_attr, |
| 433 | .get_attr = vgic_v2_get_attr, |
| 434 | .has_attr = vgic_v2_has_attr, |
| 435 | }; |
| 436 | |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 437 | #ifdef CONFIG_KVM_ARM_VGIC_V3 |
| 438 | |
| 439 | static int vgic_v3_set_attr(struct kvm_device *dev, |
| 440 | struct kvm_device_attr *attr) |
| 441 | { |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 442 | return vgic_set_common_attr(dev, attr); |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | static int vgic_v3_get_attr(struct kvm_device *dev, |
| 446 | struct kvm_device_attr *attr) |
| 447 | { |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 448 | return vgic_get_common_attr(dev, attr); |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 449 | } |
| 450 | |
| 451 | static int vgic_v3_has_attr(struct kvm_device *dev, |
| 452 | struct kvm_device_attr *attr) |
| 453 | { |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 454 | switch (attr->group) { |
Eric Auger | e5c3029 | 2015-12-21 17:27:39 +0100 | [diff] [blame] | 455 | case KVM_DEV_ARM_VGIC_GRP_ADDR: |
| 456 | switch (attr->attr) { |
| 457 | case KVM_VGIC_V3_ADDR_TYPE_DIST: |
| 458 | case KVM_VGIC_V3_ADDR_TYPE_REDIST: |
| 459 | return 0; |
| 460 | } |
| 461 | break; |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 462 | case KVM_DEV_ARM_VGIC_GRP_NR_IRQS: |
| 463 | return 0; |
Eric Auger | afcc7c5 | 2015-12-21 17:22:05 +0100 | [diff] [blame] | 464 | case KVM_DEV_ARM_VGIC_GRP_CTRL: |
| 465 | switch (attr->attr) { |
| 466 | case KVM_DEV_ARM_VGIC_CTRL_INIT: |
| 467 | return 0; |
| 468 | } |
Eric Auger | fca2560 | 2015-12-21 16:33:22 +0100 | [diff] [blame] | 469 | } |
Eric Auger | c86c772 | 2015-11-30 14:01:58 +0100 | [diff] [blame] | 470 | return -ENXIO; |
| 471 | } |
| 472 | |
| 473 | struct kvm_device_ops kvm_arm_vgic_v3_ops = { |
| 474 | .name = "kvm-arm-vgic-v3", |
| 475 | .create = vgic_create, |
| 476 | .destroy = vgic_destroy, |
| 477 | .set_attr = vgic_v3_set_attr, |
| 478 | .get_attr = vgic_v3_get_attr, |
| 479 | .has_attr = vgic_v3_has_attr, |
| 480 | }; |
| 481 | |
| 482 | #endif /* CONFIG_KVM_ARM_VGIC_V3 */ |