2 * QEMU emulation of an Intel IOMMU (VT-d)
3 * (DMA Remapping device)
5 * Copyright (C) 2013 Knut Omang, Oracle <knut.omang@oracle.com>
6 * Copyright (C) 2014 Le Tan, <tamlokveer@gmail.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, see <http://www.gnu.org/licenses/>.
22 #include "qemu/osdep.h"
23 #include "hw/sysbus.h"
24 #include "exec/address-spaces.h"
25 #include "intel_iommu_internal.h"
26 #include "hw/pci/pci.h"
27 #include "hw/pci/pci_bus.h"
28 #include "hw/i386/pc.h"
29 #include "hw/boards.h"
30 #include "hw/i386/x86-iommu.h"
31 #include "hw/pci-host/q35.h"
33 /*#define DEBUG_INTEL_IOMMU*/
34 #ifdef DEBUG_INTEL_IOMMU
36 DEBUG_GENERAL
, DEBUG_CSR
, DEBUG_INV
, DEBUG_MMU
, DEBUG_FLOG
,
37 DEBUG_CACHE
, DEBUG_IR
,
39 #define VTD_DBGBIT(x) (1 << DEBUG_##x)
40 static int vtd_dbgflags
= VTD_DBGBIT(GENERAL
) | VTD_DBGBIT(CSR
);
42 #define VTD_DPRINTF(what, fmt, ...) do { \
43 if (vtd_dbgflags & VTD_DBGBIT(what)) { \
44 fprintf(stderr, "(vtd)%s: " fmt "\n", __func__, \
48 #define VTD_DPRINTF(what, fmt, ...) do {} while (0)
51 static void vtd_define_quad(IntelIOMMUState
*s
, hwaddr addr
, uint64_t val
,
52 uint64_t wmask
, uint64_t w1cmask
)
54 stq_le_p(&s
->csr
[addr
], val
);
55 stq_le_p(&s
->wmask
[addr
], wmask
);
56 stq_le_p(&s
->w1cmask
[addr
], w1cmask
);
59 static void vtd_define_quad_wo(IntelIOMMUState
*s
, hwaddr addr
, uint64_t mask
)
61 stq_le_p(&s
->womask
[addr
], mask
);
64 static void vtd_define_long(IntelIOMMUState
*s
, hwaddr addr
, uint32_t val
,
65 uint32_t wmask
, uint32_t w1cmask
)
67 stl_le_p(&s
->csr
[addr
], val
);
68 stl_le_p(&s
->wmask
[addr
], wmask
);
69 stl_le_p(&s
->w1cmask
[addr
], w1cmask
);
72 static void vtd_define_long_wo(IntelIOMMUState
*s
, hwaddr addr
, uint32_t mask
)
74 stl_le_p(&s
->womask
[addr
], mask
);
77 /* "External" get/set operations */
78 static void vtd_set_quad(IntelIOMMUState
*s
, hwaddr addr
, uint64_t val
)
80 uint64_t oldval
= ldq_le_p(&s
->csr
[addr
]);
81 uint64_t wmask
= ldq_le_p(&s
->wmask
[addr
]);
82 uint64_t w1cmask
= ldq_le_p(&s
->w1cmask
[addr
]);
83 stq_le_p(&s
->csr
[addr
],
84 ((oldval
& ~wmask
) | (val
& wmask
)) & ~(w1cmask
& val
));
87 static void vtd_set_long(IntelIOMMUState
*s
, hwaddr addr
, uint32_t val
)
89 uint32_t oldval
= ldl_le_p(&s
->csr
[addr
]);
90 uint32_t wmask
= ldl_le_p(&s
->wmask
[addr
]);
91 uint32_t w1cmask
= ldl_le_p(&s
->w1cmask
[addr
]);
92 stl_le_p(&s
->csr
[addr
],
93 ((oldval
& ~wmask
) | (val
& wmask
)) & ~(w1cmask
& val
));
96 static uint64_t vtd_get_quad(IntelIOMMUState
*s
, hwaddr addr
)
98 uint64_t val
= ldq_le_p(&s
->csr
[addr
]);
99 uint64_t womask
= ldq_le_p(&s
->womask
[addr
]);
100 return val
& ~womask
;
103 static uint32_t vtd_get_long(IntelIOMMUState
*s
, hwaddr addr
)
105 uint32_t val
= ldl_le_p(&s
->csr
[addr
]);
106 uint32_t womask
= ldl_le_p(&s
->womask
[addr
]);
107 return val
& ~womask
;
110 /* "Internal" get/set operations */
111 static uint64_t vtd_get_quad_raw(IntelIOMMUState
*s
, hwaddr addr
)
113 return ldq_le_p(&s
->csr
[addr
]);
116 static uint32_t vtd_get_long_raw(IntelIOMMUState
*s
, hwaddr addr
)
118 return ldl_le_p(&s
->csr
[addr
]);
121 static void vtd_set_quad_raw(IntelIOMMUState
*s
, hwaddr addr
, uint64_t val
)
123 stq_le_p(&s
->csr
[addr
], val
);
126 static uint32_t vtd_set_clear_mask_long(IntelIOMMUState
*s
, hwaddr addr
,
127 uint32_t clear
, uint32_t mask
)
129 uint32_t new_val
= (ldl_le_p(&s
->csr
[addr
]) & ~clear
) | mask
;
130 stl_le_p(&s
->csr
[addr
], new_val
);
134 static uint64_t vtd_set_clear_mask_quad(IntelIOMMUState
*s
, hwaddr addr
,
135 uint64_t clear
, uint64_t mask
)
137 uint64_t new_val
= (ldq_le_p(&s
->csr
[addr
]) & ~clear
) | mask
;
138 stq_le_p(&s
->csr
[addr
], new_val
);
142 /* GHashTable functions */
143 static gboolean
vtd_uint64_equal(gconstpointer v1
, gconstpointer v2
)
145 return *((const uint64_t *)v1
) == *((const uint64_t *)v2
);
148 static guint
vtd_uint64_hash(gconstpointer v
)
150 return (guint
)*(const uint64_t *)v
;
153 static gboolean
vtd_hash_remove_by_domain(gpointer key
, gpointer value
,
156 VTDIOTLBEntry
*entry
= (VTDIOTLBEntry
*)value
;
157 uint16_t domain_id
= *(uint16_t *)user_data
;
158 return entry
->domain_id
== domain_id
;
161 /* The shift of an addr for a certain level of paging structure */
162 static inline uint32_t vtd_slpt_level_shift(uint32_t level
)
164 return VTD_PAGE_SHIFT_4K
+ (level
- 1) * VTD_SL_LEVEL_BITS
;
167 static inline uint64_t vtd_slpt_level_page_mask(uint32_t level
)
169 return ~((1ULL << vtd_slpt_level_shift(level
)) - 1);
172 static gboolean
vtd_hash_remove_by_page(gpointer key
, gpointer value
,
175 VTDIOTLBEntry
*entry
= (VTDIOTLBEntry
*)value
;
176 VTDIOTLBPageInvInfo
*info
= (VTDIOTLBPageInvInfo
*)user_data
;
177 uint64_t gfn
= (info
->addr
>> VTD_PAGE_SHIFT_4K
) & info
->mask
;
178 uint64_t gfn_tlb
= (info
->addr
& entry
->mask
) >> VTD_PAGE_SHIFT_4K
;
179 return (entry
->domain_id
== info
->domain_id
) &&
180 (((entry
->gfn
& info
->mask
) == gfn
) ||
181 (entry
->gfn
== gfn_tlb
));
184 /* Reset all the gen of VTDAddressSpace to zero and set the gen of
185 * IntelIOMMUState to 1.
187 static void vtd_reset_context_cache(IntelIOMMUState
*s
)
189 VTDAddressSpace
*vtd_as
;
191 GHashTableIter bus_it
;
194 g_hash_table_iter_init(&bus_it
, s
->vtd_as_by_busptr
);
196 VTD_DPRINTF(CACHE
, "global context_cache_gen=1");
197 while (g_hash_table_iter_next (&bus_it
, NULL
, (void**)&vtd_bus
)) {
198 for (devfn_it
= 0; devfn_it
< X86_IOMMU_PCI_DEVFN_MAX
; ++devfn_it
) {
199 vtd_as
= vtd_bus
->dev_as
[devfn_it
];
203 vtd_as
->context_cache_entry
.context_cache_gen
= 0;
206 s
->context_cache_gen
= 1;
209 static void vtd_reset_iotlb(IntelIOMMUState
*s
)
212 g_hash_table_remove_all(s
->iotlb
);
215 static uint64_t vtd_get_iotlb_key(uint64_t gfn
, uint8_t source_id
,
218 return gfn
| ((uint64_t)(source_id
) << VTD_IOTLB_SID_SHIFT
) |
219 ((uint64_t)(level
) << VTD_IOTLB_LVL_SHIFT
);
222 static uint64_t vtd_get_iotlb_gfn(hwaddr addr
, uint32_t level
)
224 return (addr
& vtd_slpt_level_page_mask(level
)) >> VTD_PAGE_SHIFT_4K
;
227 static VTDIOTLBEntry
*vtd_lookup_iotlb(IntelIOMMUState
*s
, uint16_t source_id
,
230 VTDIOTLBEntry
*entry
;
234 for (level
= VTD_SL_PT_LEVEL
; level
< VTD_SL_PML4_LEVEL
; level
++) {
235 key
= vtd_get_iotlb_key(vtd_get_iotlb_gfn(addr
, level
),
237 entry
= g_hash_table_lookup(s
->iotlb
, &key
);
247 static void vtd_update_iotlb(IntelIOMMUState
*s
, uint16_t source_id
,
248 uint16_t domain_id
, hwaddr addr
, uint64_t slpte
,
249 bool read_flags
, bool write_flags
,
252 VTDIOTLBEntry
*entry
= g_malloc(sizeof(*entry
));
253 uint64_t *key
= g_malloc(sizeof(*key
));
254 uint64_t gfn
= vtd_get_iotlb_gfn(addr
, level
);
256 VTD_DPRINTF(CACHE
, "update iotlb sid 0x%"PRIx16
" gpa 0x%"PRIx64
257 " slpte 0x%"PRIx64
" did 0x%"PRIx16
, source_id
, addr
, slpte
,
259 if (g_hash_table_size(s
->iotlb
) >= VTD_IOTLB_MAX_SIZE
) {
260 VTD_DPRINTF(CACHE
, "iotlb exceeds size limit, forced to reset");
265 entry
->domain_id
= domain_id
;
266 entry
->slpte
= slpte
;
267 entry
->read_flags
= read_flags
;
268 entry
->write_flags
= write_flags
;
269 entry
->mask
= vtd_slpt_level_page_mask(level
);
270 *key
= vtd_get_iotlb_key(gfn
, source_id
, level
);
271 g_hash_table_replace(s
->iotlb
, key
, entry
);
274 /* Given the reg addr of both the message data and address, generate an
277 static void vtd_generate_interrupt(IntelIOMMUState
*s
, hwaddr mesg_addr_reg
,
278 hwaddr mesg_data_reg
)
283 assert(mesg_data_reg
< DMAR_REG_SIZE
);
284 assert(mesg_addr_reg
< DMAR_REG_SIZE
);
286 addr
= vtd_get_long_raw(s
, mesg_addr_reg
);
287 data
= vtd_get_long_raw(s
, mesg_data_reg
);
289 VTD_DPRINTF(FLOG
, "msi: addr 0x%"PRIx64
" data 0x%"PRIx32
, addr
, data
);
290 address_space_stl_le(&address_space_memory
, addr
, data
,
291 MEMTXATTRS_UNSPECIFIED
, NULL
);
294 /* Generate a fault event to software via MSI if conditions are met.
295 * Notice that the value of FSTS_REG being passed to it should be the one
298 static void vtd_generate_fault_event(IntelIOMMUState
*s
, uint32_t pre_fsts
)
300 if (pre_fsts
& VTD_FSTS_PPF
|| pre_fsts
& VTD_FSTS_PFO
||
301 pre_fsts
& VTD_FSTS_IQE
) {
302 VTD_DPRINTF(FLOG
, "there are previous interrupt conditions "
303 "to be serviced by software, fault event is not generated "
304 "(FSTS_REG 0x%"PRIx32
")", pre_fsts
);
307 vtd_set_clear_mask_long(s
, DMAR_FECTL_REG
, 0, VTD_FECTL_IP
);
308 if (vtd_get_long_raw(s
, DMAR_FECTL_REG
) & VTD_FECTL_IM
) {
309 VTD_DPRINTF(FLOG
, "Interrupt Mask set, fault event is not generated");
311 vtd_generate_interrupt(s
, DMAR_FEADDR_REG
, DMAR_FEDATA_REG
);
312 vtd_set_clear_mask_long(s
, DMAR_FECTL_REG
, VTD_FECTL_IP
, 0);
316 /* Check if the Fault (F) field of the Fault Recording Register referenced by
319 static bool vtd_is_frcd_set(IntelIOMMUState
*s
, uint16_t index
)
321 /* Each reg is 128-bit */
322 hwaddr addr
= DMAR_FRCD_REG_OFFSET
+ (((uint64_t)index
) << 4);
323 addr
+= 8; /* Access the high 64-bit half */
325 assert(index
< DMAR_FRCD_REG_NR
);
327 return vtd_get_quad_raw(s
, addr
) & VTD_FRCD_F
;
330 /* Update the PPF field of Fault Status Register.
331 * Should be called whenever change the F field of any fault recording
334 static void vtd_update_fsts_ppf(IntelIOMMUState
*s
)
337 uint32_t ppf_mask
= 0;
339 for (i
= 0; i
< DMAR_FRCD_REG_NR
; i
++) {
340 if (vtd_is_frcd_set(s
, i
)) {
341 ppf_mask
= VTD_FSTS_PPF
;
345 vtd_set_clear_mask_long(s
, DMAR_FSTS_REG
, VTD_FSTS_PPF
, ppf_mask
);
346 VTD_DPRINTF(FLOG
, "set PPF of FSTS_REG to %d", ppf_mask
? 1 : 0);
349 static void vtd_set_frcd_and_update_ppf(IntelIOMMUState
*s
, uint16_t index
)
351 /* Each reg is 128-bit */
352 hwaddr addr
= DMAR_FRCD_REG_OFFSET
+ (((uint64_t)index
) << 4);
353 addr
+= 8; /* Access the high 64-bit half */
355 assert(index
< DMAR_FRCD_REG_NR
);
357 vtd_set_clear_mask_quad(s
, addr
, 0, VTD_FRCD_F
);
358 vtd_update_fsts_ppf(s
);
361 /* Must not update F field now, should be done later */
362 static void vtd_record_frcd(IntelIOMMUState
*s
, uint16_t index
,
363 uint16_t source_id
, hwaddr addr
,
364 VTDFaultReason fault
, bool is_write
)
367 hwaddr frcd_reg_addr
= DMAR_FRCD_REG_OFFSET
+ (((uint64_t)index
) << 4);
369 assert(index
< DMAR_FRCD_REG_NR
);
371 lo
= VTD_FRCD_FI(addr
);
372 hi
= VTD_FRCD_SID(source_id
) | VTD_FRCD_FR(fault
);
376 vtd_set_quad_raw(s
, frcd_reg_addr
, lo
);
377 vtd_set_quad_raw(s
, frcd_reg_addr
+ 8, hi
);
378 VTD_DPRINTF(FLOG
, "record to FRCD_REG #%"PRIu16
": hi 0x%"PRIx64
379 ", lo 0x%"PRIx64
, index
, hi
, lo
);
382 /* Try to collapse multiple pending faults from the same requester */
383 static bool vtd_try_collapse_fault(IntelIOMMUState
*s
, uint16_t source_id
)
387 hwaddr addr
= DMAR_FRCD_REG_OFFSET
+ 8; /* The high 64-bit half */
389 for (i
= 0; i
< DMAR_FRCD_REG_NR
; i
++) {
390 frcd_reg
= vtd_get_quad_raw(s
, addr
);
391 VTD_DPRINTF(FLOG
, "frcd_reg #%d 0x%"PRIx64
, i
, frcd_reg
);
392 if ((frcd_reg
& VTD_FRCD_F
) &&
393 ((frcd_reg
& VTD_FRCD_SID_MASK
) == source_id
)) {
396 addr
+= 16; /* 128-bit for each */
401 /* Log and report an DMAR (address translation) fault to software */
402 static void vtd_report_dmar_fault(IntelIOMMUState
*s
, uint16_t source_id
,
403 hwaddr addr
, VTDFaultReason fault
,
406 uint32_t fsts_reg
= vtd_get_long_raw(s
, DMAR_FSTS_REG
);
408 assert(fault
< VTD_FR_MAX
);
410 if (fault
== VTD_FR_RESERVED_ERR
) {
411 /* This is not a normal fault reason case. Drop it. */
414 VTD_DPRINTF(FLOG
, "sid 0x%"PRIx16
", fault %d, addr 0x%"PRIx64
415 ", is_write %d", source_id
, fault
, addr
, is_write
);
416 if (fsts_reg
& VTD_FSTS_PFO
) {
417 VTD_DPRINTF(FLOG
, "new fault is not recorded due to "
418 "Primary Fault Overflow");
421 if (vtd_try_collapse_fault(s
, source_id
)) {
422 VTD_DPRINTF(FLOG
, "new fault is not recorded due to "
423 "compression of faults");
426 if (vtd_is_frcd_set(s
, s
->next_frcd_reg
)) {
427 VTD_DPRINTF(FLOG
, "Primary Fault Overflow and "
428 "new fault is not recorded, set PFO field");
429 vtd_set_clear_mask_long(s
, DMAR_FSTS_REG
, 0, VTD_FSTS_PFO
);
433 vtd_record_frcd(s
, s
->next_frcd_reg
, source_id
, addr
, fault
, is_write
);
435 if (fsts_reg
& VTD_FSTS_PPF
) {
436 VTD_DPRINTF(FLOG
, "there are pending faults already, "
437 "fault event is not generated");
438 vtd_set_frcd_and_update_ppf(s
, s
->next_frcd_reg
);
440 if (s
->next_frcd_reg
== DMAR_FRCD_REG_NR
) {
441 s
->next_frcd_reg
= 0;
444 vtd_set_clear_mask_long(s
, DMAR_FSTS_REG
, VTD_FSTS_FRI_MASK
,
445 VTD_FSTS_FRI(s
->next_frcd_reg
));
446 vtd_set_frcd_and_update_ppf(s
, s
->next_frcd_reg
); /* Will set PPF */
448 if (s
->next_frcd_reg
== DMAR_FRCD_REG_NR
) {
449 s
->next_frcd_reg
= 0;
451 /* This case actually cause the PPF to be Set.
452 * So generate fault event (interrupt).
454 vtd_generate_fault_event(s
, fsts_reg
);
458 /* Handle Invalidation Queue Errors of queued invalidation interface error
461 static void vtd_handle_inv_queue_error(IntelIOMMUState
*s
)
463 uint32_t fsts_reg
= vtd_get_long_raw(s
, DMAR_FSTS_REG
);
465 vtd_set_clear_mask_long(s
, DMAR_FSTS_REG
, 0, VTD_FSTS_IQE
);
466 vtd_generate_fault_event(s
, fsts_reg
);
469 /* Set the IWC field and try to generate an invalidation completion interrupt */
470 static void vtd_generate_completion_event(IntelIOMMUState
*s
)
472 VTD_DPRINTF(INV
, "completes an invalidation wait command with "
474 if (vtd_get_long_raw(s
, DMAR_ICS_REG
) & VTD_ICS_IWC
) {
475 VTD_DPRINTF(INV
, "there is a previous interrupt condition to be "
476 "serviced by software, "
477 "new invalidation event is not generated");
480 vtd_set_clear_mask_long(s
, DMAR_ICS_REG
, 0, VTD_ICS_IWC
);
481 vtd_set_clear_mask_long(s
, DMAR_IECTL_REG
, 0, VTD_IECTL_IP
);
482 if (vtd_get_long_raw(s
, DMAR_IECTL_REG
) & VTD_IECTL_IM
) {
483 VTD_DPRINTF(INV
, "IM filed in IECTL_REG is set, new invalidation "
484 "event is not generated");
487 /* Generate the interrupt event */
488 vtd_generate_interrupt(s
, DMAR_IEADDR_REG
, DMAR_IEDATA_REG
);
489 vtd_set_clear_mask_long(s
, DMAR_IECTL_REG
, VTD_IECTL_IP
, 0);
493 static inline bool vtd_root_entry_present(VTDRootEntry
*root
)
495 return root
->val
& VTD_ROOT_ENTRY_P
;
498 static int vtd_get_root_entry(IntelIOMMUState
*s
, uint8_t index
,
503 addr
= s
->root
+ index
* sizeof(*re
);
504 if (dma_memory_read(&address_space_memory
, addr
, re
, sizeof(*re
))) {
505 VTD_DPRINTF(GENERAL
, "error: fail to access root-entry at 0x%"PRIx64
506 " + %"PRIu8
, s
->root
, index
);
508 return -VTD_FR_ROOT_TABLE_INV
;
510 re
->val
= le64_to_cpu(re
->val
);
514 static inline bool vtd_context_entry_present(VTDContextEntry
*context
)
516 return context
->lo
& VTD_CONTEXT_ENTRY_P
;
519 static int vtd_get_context_entry_from_root(VTDRootEntry
*root
, uint8_t index
,
524 if (!vtd_root_entry_present(root
)) {
525 VTD_DPRINTF(GENERAL
, "error: root-entry is not present");
526 return -VTD_FR_ROOT_ENTRY_P
;
528 addr
= (root
->val
& VTD_ROOT_ENTRY_CTP
) + index
* sizeof(*ce
);
529 if (dma_memory_read(&address_space_memory
, addr
, ce
, sizeof(*ce
))) {
530 VTD_DPRINTF(GENERAL
, "error: fail to access context-entry at 0x%"PRIx64
532 (uint64_t)(root
->val
& VTD_ROOT_ENTRY_CTP
), index
);
533 return -VTD_FR_CONTEXT_TABLE_INV
;
535 ce
->lo
= le64_to_cpu(ce
->lo
);
536 ce
->hi
= le64_to_cpu(ce
->hi
);
540 static inline dma_addr_t
vtd_get_slpt_base_from_context(VTDContextEntry
*ce
)
542 return ce
->lo
& VTD_CONTEXT_ENTRY_SLPTPTR
;
545 static inline uint64_t vtd_get_slpte_addr(uint64_t slpte
)
547 return slpte
& VTD_SL_PT_BASE_ADDR_MASK
;
550 /* Whether the pte indicates the address of the page frame */
551 static inline bool vtd_is_last_slpte(uint64_t slpte
, uint32_t level
)
553 return level
== VTD_SL_PT_LEVEL
|| (slpte
& VTD_SL_PT_PAGE_SIZE_MASK
);
556 /* Get the content of a spte located in @base_addr[@index] */
557 static uint64_t vtd_get_slpte(dma_addr_t base_addr
, uint32_t index
)
561 assert(index
< VTD_SL_PT_ENTRY_NR
);
563 if (dma_memory_read(&address_space_memory
,
564 base_addr
+ index
* sizeof(slpte
), &slpte
,
566 slpte
= (uint64_t)-1;
569 slpte
= le64_to_cpu(slpte
);
573 /* Given a gpa and the level of paging structure, return the offset of current
576 static inline uint32_t vtd_gpa_level_offset(uint64_t gpa
, uint32_t level
)
578 return (gpa
>> vtd_slpt_level_shift(level
)) &
579 ((1ULL << VTD_SL_LEVEL_BITS
) - 1);
582 /* Check Capability Register to see if the @level of page-table is supported */
583 static inline bool vtd_is_level_supported(IntelIOMMUState
*s
, uint32_t level
)
585 return VTD_CAP_SAGAW_MASK
& s
->cap
&
586 (1ULL << (level
- 2 + VTD_CAP_SAGAW_SHIFT
));
589 /* Get the page-table level that hardware should use for the second-level
590 * page-table walk from the Address Width field of context-entry.
592 static inline uint32_t vtd_get_level_from_context_entry(VTDContextEntry
*ce
)
594 return 2 + (ce
->hi
& VTD_CONTEXT_ENTRY_AW
);
597 static inline uint32_t vtd_get_agaw_from_context_entry(VTDContextEntry
*ce
)
599 return 30 + (ce
->hi
& VTD_CONTEXT_ENTRY_AW
) * 9;
602 static const uint64_t vtd_paging_entry_rsvd_field
[] = {
604 /* For not large page */
605 [1] = 0x800ULL
| ~(VTD_HAW_MASK
| VTD_SL_IGN_COM
),
606 [2] = 0x800ULL
| ~(VTD_HAW_MASK
| VTD_SL_IGN_COM
),
607 [3] = 0x800ULL
| ~(VTD_HAW_MASK
| VTD_SL_IGN_COM
),
608 [4] = 0x880ULL
| ~(VTD_HAW_MASK
| VTD_SL_IGN_COM
),
610 [5] = 0x800ULL
| ~(VTD_HAW_MASK
| VTD_SL_IGN_COM
),
611 [6] = 0x1ff800ULL
| ~(VTD_HAW_MASK
| VTD_SL_IGN_COM
),
612 [7] = 0x3ffff800ULL
| ~(VTD_HAW_MASK
| VTD_SL_IGN_COM
),
613 [8] = 0x880ULL
| ~(VTD_HAW_MASK
| VTD_SL_IGN_COM
),
616 static bool vtd_slpte_nonzero_rsvd(uint64_t slpte
, uint32_t level
)
618 if (slpte
& VTD_SL_PT_PAGE_SIZE_MASK
) {
619 /* Maybe large page */
620 return slpte
& vtd_paging_entry_rsvd_field
[level
+ 4];
622 return slpte
& vtd_paging_entry_rsvd_field
[level
];
626 /* Given the @gpa, get relevant @slptep. @slpte_level will be the last level
627 * of the translation, can be used for deciding the size of large page.
629 static int vtd_gpa_to_slpte(VTDContextEntry
*ce
, uint64_t gpa
, bool is_write
,
630 uint64_t *slptep
, uint32_t *slpte_level
,
631 bool *reads
, bool *writes
)
633 dma_addr_t addr
= vtd_get_slpt_base_from_context(ce
);
634 uint32_t level
= vtd_get_level_from_context_entry(ce
);
637 uint32_t ce_agaw
= vtd_get_agaw_from_context_entry(ce
);
638 uint64_t access_right_check
;
640 /* Check if @gpa is above 2^X-1, where X is the minimum of MGAW in CAP_REG
641 * and AW in context-entry.
643 if (gpa
& ~((1ULL << MIN(ce_agaw
, VTD_MGAW
)) - 1)) {
644 VTD_DPRINTF(GENERAL
, "error: gpa 0x%"PRIx64
" exceeds limits", gpa
);
645 return -VTD_FR_ADDR_BEYOND_MGAW
;
648 /* FIXME: what is the Atomics request here? */
649 access_right_check
= is_write
? VTD_SL_W
: VTD_SL_R
;
652 offset
= vtd_gpa_level_offset(gpa
, level
);
653 slpte
= vtd_get_slpte(addr
, offset
);
655 if (slpte
== (uint64_t)-1) {
656 VTD_DPRINTF(GENERAL
, "error: fail to access second-level paging "
657 "entry at level %"PRIu32
" for gpa 0x%"PRIx64
,
659 if (level
== vtd_get_level_from_context_entry(ce
)) {
660 /* Invalid programming of context-entry */
661 return -VTD_FR_CONTEXT_ENTRY_INV
;
663 return -VTD_FR_PAGING_ENTRY_INV
;
666 *reads
= (*reads
) && (slpte
& VTD_SL_R
);
667 *writes
= (*writes
) && (slpte
& VTD_SL_W
);
668 if (!(slpte
& access_right_check
)) {
669 VTD_DPRINTF(GENERAL
, "error: lack of %s permission for "
670 "gpa 0x%"PRIx64
" slpte 0x%"PRIx64
,
671 (is_write
? "write" : "read"), gpa
, slpte
);
672 return is_write
? -VTD_FR_WRITE
: -VTD_FR_READ
;
674 if (vtd_slpte_nonzero_rsvd(slpte
, level
)) {
675 VTD_DPRINTF(GENERAL
, "error: non-zero reserved field in second "
676 "level paging entry level %"PRIu32
" slpte 0x%"PRIx64
,
678 return -VTD_FR_PAGING_ENTRY_RSVD
;
681 if (vtd_is_last_slpte(slpte
, level
)) {
683 *slpte_level
= level
;
686 addr
= vtd_get_slpte_addr(slpte
);
691 /* Map a device to its corresponding domain (context-entry) */
692 static int vtd_dev_to_context_entry(IntelIOMMUState
*s
, uint8_t bus_num
,
693 uint8_t devfn
, VTDContextEntry
*ce
)
698 ret_fr
= vtd_get_root_entry(s
, bus_num
, &re
);
703 if (!vtd_root_entry_present(&re
)) {
704 VTD_DPRINTF(GENERAL
, "error: root-entry #%"PRIu8
" is not present",
706 return -VTD_FR_ROOT_ENTRY_P
;
707 } else if (re
.rsvd
|| (re
.val
& VTD_ROOT_ENTRY_RSVD
)) {
708 VTD_DPRINTF(GENERAL
, "error: non-zero reserved field in root-entry "
709 "hi 0x%"PRIx64
" lo 0x%"PRIx64
, re
.rsvd
, re
.val
);
710 return -VTD_FR_ROOT_ENTRY_RSVD
;
713 ret_fr
= vtd_get_context_entry_from_root(&re
, devfn
, ce
);
718 if (!vtd_context_entry_present(ce
)) {
720 "error: context-entry #%"PRIu8
"(bus #%"PRIu8
") "
721 "is not present", devfn
, bus_num
);
722 return -VTD_FR_CONTEXT_ENTRY_P
;
723 } else if ((ce
->hi
& VTD_CONTEXT_ENTRY_RSVD_HI
) ||
724 (ce
->lo
& VTD_CONTEXT_ENTRY_RSVD_LO
)) {
726 "error: non-zero reserved field in context-entry "
727 "hi 0x%"PRIx64
" lo 0x%"PRIx64
, ce
->hi
, ce
->lo
);
728 return -VTD_FR_CONTEXT_ENTRY_RSVD
;
730 /* Check if the programming of context-entry is valid */
731 if (!vtd_is_level_supported(s
, vtd_get_level_from_context_entry(ce
))) {
732 VTD_DPRINTF(GENERAL
, "error: unsupported Address Width value in "
733 "context-entry hi 0x%"PRIx64
" lo 0x%"PRIx64
,
735 return -VTD_FR_CONTEXT_ENTRY_INV
;
736 } else if (ce
->lo
& VTD_CONTEXT_ENTRY_TT
) {
737 VTD_DPRINTF(GENERAL
, "error: unsupported Translation Type in "
738 "context-entry hi 0x%"PRIx64
" lo 0x%"PRIx64
,
740 return -VTD_FR_CONTEXT_ENTRY_INV
;
745 static inline uint16_t vtd_make_source_id(uint8_t bus_num
, uint8_t devfn
)
747 return ((bus_num
& 0xffUL
) << 8) | (devfn
& 0xffUL
);
750 static const bool vtd_qualified_faults
[] = {
751 [VTD_FR_RESERVED
] = false,
752 [VTD_FR_ROOT_ENTRY_P
] = false,
753 [VTD_FR_CONTEXT_ENTRY_P
] = true,
754 [VTD_FR_CONTEXT_ENTRY_INV
] = true,
755 [VTD_FR_ADDR_BEYOND_MGAW
] = true,
756 [VTD_FR_WRITE
] = true,
757 [VTD_FR_READ
] = true,
758 [VTD_FR_PAGING_ENTRY_INV
] = true,
759 [VTD_FR_ROOT_TABLE_INV
] = false,
760 [VTD_FR_CONTEXT_TABLE_INV
] = false,
761 [VTD_FR_ROOT_ENTRY_RSVD
] = false,
762 [VTD_FR_PAGING_ENTRY_RSVD
] = true,
763 [VTD_FR_CONTEXT_ENTRY_TT
] = true,
764 [VTD_FR_RESERVED_ERR
] = false,
765 [VTD_FR_MAX
] = false,
768 /* To see if a fault condition is "qualified", which is reported to software
769 * only if the FPD field in the context-entry used to process the faulting
772 static inline bool vtd_is_qualified_fault(VTDFaultReason fault
)
774 return vtd_qualified_faults
[fault
];
777 static inline bool vtd_is_interrupt_addr(hwaddr addr
)
779 return VTD_INTERRUPT_ADDR_FIRST
<= addr
&& addr
<= VTD_INTERRUPT_ADDR_LAST
;
782 /* Map dev to context-entry then do a paging-structures walk to do a iommu
785 * Called from RCU critical section.
787 * @bus_num: The bus number
788 * @devfn: The devfn, which is the combined of device and function number
789 * @is_write: The access is a write operation
790 * @entry: IOMMUTLBEntry that contain the addr to be translated and result
792 static void vtd_do_iommu_translate(VTDAddressSpace
*vtd_as
, PCIBus
*bus
,
793 uint8_t devfn
, hwaddr addr
, bool is_write
,
794 IOMMUTLBEntry
*entry
)
796 IntelIOMMUState
*s
= vtd_as
->iommu_state
;
798 uint8_t bus_num
= pci_bus_num(bus
);
799 VTDContextCacheEntry
*cc_entry
= &vtd_as
->context_cache_entry
;
800 uint64_t slpte
, page_mask
;
802 uint16_t source_id
= vtd_make_source_id(bus_num
, devfn
);
804 bool is_fpd_set
= false;
807 VTDIOTLBEntry
*iotlb_entry
;
809 /* Check if the request is in interrupt address range */
810 if (vtd_is_interrupt_addr(addr
)) {
812 /* FIXME: since we don't know the length of the access here, we
813 * treat Non-DWORD length write requests without PASID as
814 * interrupt requests, too. Withoud interrupt remapping support,
815 * we just use 1:1 mapping.
817 VTD_DPRINTF(MMU
, "write request to interrupt address "
818 "gpa 0x%"PRIx64
, addr
);
819 entry
->iova
= addr
& VTD_PAGE_MASK_4K
;
820 entry
->translated_addr
= addr
& VTD_PAGE_MASK_4K
;
821 entry
->addr_mask
= ~VTD_PAGE_MASK_4K
;
822 entry
->perm
= IOMMU_WO
;
825 VTD_DPRINTF(GENERAL
, "error: read request from interrupt address "
826 "gpa 0x%"PRIx64
, addr
);
827 vtd_report_dmar_fault(s
, source_id
, addr
, VTD_FR_READ
, is_write
);
831 /* Try to fetch slpte form IOTLB */
832 iotlb_entry
= vtd_lookup_iotlb(s
, source_id
, addr
);
834 VTD_DPRINTF(CACHE
, "hit iotlb sid 0x%"PRIx16
" gpa 0x%"PRIx64
835 " slpte 0x%"PRIx64
" did 0x%"PRIx16
, source_id
, addr
,
836 iotlb_entry
->slpte
, iotlb_entry
->domain_id
);
837 slpte
= iotlb_entry
->slpte
;
838 reads
= iotlb_entry
->read_flags
;
839 writes
= iotlb_entry
->write_flags
;
840 page_mask
= iotlb_entry
->mask
;
843 /* Try to fetch context-entry from cache first */
844 if (cc_entry
->context_cache_gen
== s
->context_cache_gen
) {
845 VTD_DPRINTF(CACHE
, "hit context-cache bus %d devfn %d "
846 "(hi %"PRIx64
" lo %"PRIx64
" gen %"PRIu32
")",
847 bus_num
, devfn
, cc_entry
->context_entry
.hi
,
848 cc_entry
->context_entry
.lo
, cc_entry
->context_cache_gen
);
849 ce
= cc_entry
->context_entry
;
850 is_fpd_set
= ce
.lo
& VTD_CONTEXT_ENTRY_FPD
;
852 ret_fr
= vtd_dev_to_context_entry(s
, bus_num
, devfn
, &ce
);
853 is_fpd_set
= ce
.lo
& VTD_CONTEXT_ENTRY_FPD
;
856 if (is_fpd_set
&& vtd_is_qualified_fault(ret_fr
)) {
857 VTD_DPRINTF(FLOG
, "fault processing is disabled for DMA "
858 "requests through this context-entry "
861 vtd_report_dmar_fault(s
, source_id
, addr
, ret_fr
, is_write
);
865 /* Update context-cache */
866 VTD_DPRINTF(CACHE
, "update context-cache bus %d devfn %d "
867 "(hi %"PRIx64
" lo %"PRIx64
" gen %"PRIu32
"->%"PRIu32
")",
868 bus_num
, devfn
, ce
.hi
, ce
.lo
,
869 cc_entry
->context_cache_gen
, s
->context_cache_gen
);
870 cc_entry
->context_entry
= ce
;
871 cc_entry
->context_cache_gen
= s
->context_cache_gen
;
874 ret_fr
= vtd_gpa_to_slpte(&ce
, addr
, is_write
, &slpte
, &level
,
878 if (is_fpd_set
&& vtd_is_qualified_fault(ret_fr
)) {
879 VTD_DPRINTF(FLOG
, "fault processing is disabled for DMA requests "
880 "through this context-entry (with FPD Set)");
882 vtd_report_dmar_fault(s
, source_id
, addr
, ret_fr
, is_write
);
887 page_mask
= vtd_slpt_level_page_mask(level
);
888 vtd_update_iotlb(s
, source_id
, VTD_CONTEXT_ENTRY_DID(ce
.hi
), addr
, slpte
,
889 reads
, writes
, level
);
891 entry
->iova
= addr
& page_mask
;
892 entry
->translated_addr
= vtd_get_slpte_addr(slpte
) & page_mask
;
893 entry
->addr_mask
= ~page_mask
;
894 entry
->perm
= (writes
? 2 : 0) + (reads
? 1 : 0);
897 static void vtd_root_table_setup(IntelIOMMUState
*s
)
899 s
->root
= vtd_get_quad_raw(s
, DMAR_RTADDR_REG
);
900 s
->root_extended
= s
->root
& VTD_RTADDR_RTT
;
901 s
->root
&= VTD_RTADDR_ADDR_MASK
;
903 VTD_DPRINTF(CSR
, "root_table addr 0x%"PRIx64
" %s", s
->root
,
904 (s
->root_extended
? "(extended)" : ""));
907 static void vtd_interrupt_remap_table_setup(IntelIOMMUState
*s
)
910 value
= vtd_get_quad_raw(s
, DMAR_IRTA_REG
);
911 s
->intr_size
= 1UL << ((value
& VTD_IRTA_SIZE_MASK
) + 1);
912 s
->intr_root
= value
& VTD_IRTA_ADDR_MASK
;
914 /* TODO: invalidate interrupt entry cache */
916 VTD_DPRINTF(CSR
, "int remap table addr 0x%"PRIx64
" size %"PRIu32
,
917 s
->intr_root
, s
->intr_size
);
920 static void vtd_context_global_invalidate(IntelIOMMUState
*s
)
922 s
->context_cache_gen
++;
923 if (s
->context_cache_gen
== VTD_CONTEXT_CACHE_GEN_MAX
) {
924 vtd_reset_context_cache(s
);
929 /* Find the VTD address space currently associated with a given bus number,
931 static VTDBus
*vtd_find_as_from_bus_num(IntelIOMMUState
*s
, uint8_t bus_num
)
933 VTDBus
*vtd_bus
= s
->vtd_as_by_bus_num
[bus_num
];
935 /* Iterate over the registered buses to find the one
936 * which currently hold this bus number, and update the bus_num lookup table:
940 g_hash_table_iter_init(&iter
, s
->vtd_as_by_busptr
);
941 while (g_hash_table_iter_next (&iter
, NULL
, (void**)&vtd_bus
)) {
942 if (pci_bus_num(vtd_bus
->bus
) == bus_num
) {
943 s
->vtd_as_by_bus_num
[bus_num
] = vtd_bus
;
951 /* Do a context-cache device-selective invalidation.
952 * @func_mask: FM field after shifting
954 static void vtd_context_device_invalidate(IntelIOMMUState
*s
,
960 VTDAddressSpace
*vtd_as
;
964 switch (func_mask
& 3) {
966 mask
= 0; /* No bits in the SID field masked */
969 mask
= 4; /* Mask bit 2 in the SID field */
972 mask
= 6; /* Mask bit 2:1 in the SID field */
975 mask
= 7; /* Mask bit 2:0 in the SID field */
978 VTD_DPRINTF(INV
, "device-selective invalidation source 0x%"PRIx16
979 " mask %"PRIu16
, source_id
, mask
);
980 vtd_bus
= vtd_find_as_from_bus_num(s
, VTD_SID_TO_BUS(source_id
));
982 devfn
= VTD_SID_TO_DEVFN(source_id
);
983 for (devfn_it
= 0; devfn_it
< X86_IOMMU_PCI_DEVFN_MAX
; ++devfn_it
) {
984 vtd_as
= vtd_bus
->dev_as
[devfn_it
];
985 if (vtd_as
&& ((devfn_it
& mask
) == (devfn
& mask
))) {
986 VTD_DPRINTF(INV
, "invalidate context-cahce of devfn 0x%"PRIx16
,
988 vtd_as
->context_cache_entry
.context_cache_gen
= 0;
994 /* Context-cache invalidation
995 * Returns the Context Actual Invalidation Granularity.
996 * @val: the content of the CCMD_REG
998 static uint64_t vtd_context_cache_invalidate(IntelIOMMUState
*s
, uint64_t val
)
1001 uint64_t type
= val
& VTD_CCMD_CIRG_MASK
;
1004 case VTD_CCMD_DOMAIN_INVL
:
1005 VTD_DPRINTF(INV
, "domain-selective invalidation domain 0x%"PRIx16
,
1006 (uint16_t)VTD_CCMD_DID(val
));
1008 case VTD_CCMD_GLOBAL_INVL
:
1009 VTD_DPRINTF(INV
, "global invalidation");
1010 caig
= VTD_CCMD_GLOBAL_INVL_A
;
1011 vtd_context_global_invalidate(s
);
1014 case VTD_CCMD_DEVICE_INVL
:
1015 caig
= VTD_CCMD_DEVICE_INVL_A
;
1016 vtd_context_device_invalidate(s
, VTD_CCMD_SID(val
), VTD_CCMD_FM(val
));
1020 VTD_DPRINTF(GENERAL
, "error: invalid granularity");
1026 static void vtd_iotlb_global_invalidate(IntelIOMMUState
*s
)
1031 static void vtd_iotlb_domain_invalidate(IntelIOMMUState
*s
, uint16_t domain_id
)
1033 g_hash_table_foreach_remove(s
->iotlb
, vtd_hash_remove_by_domain
,
1037 static void vtd_iotlb_page_invalidate(IntelIOMMUState
*s
, uint16_t domain_id
,
1038 hwaddr addr
, uint8_t am
)
1040 VTDIOTLBPageInvInfo info
;
1042 assert(am
<= VTD_MAMV
);
1043 info
.domain_id
= domain_id
;
1045 info
.mask
= ~((1 << am
) - 1);
1046 g_hash_table_foreach_remove(s
->iotlb
, vtd_hash_remove_by_page
, &info
);
1050 * Returns the IOTLB Actual Invalidation Granularity.
1051 * @val: the content of the IOTLB_REG
1053 static uint64_t vtd_iotlb_flush(IntelIOMMUState
*s
, uint64_t val
)
1056 uint64_t type
= val
& VTD_TLB_FLUSH_GRANU_MASK
;
1062 case VTD_TLB_GLOBAL_FLUSH
:
1063 VTD_DPRINTF(INV
, "global invalidation");
1064 iaig
= VTD_TLB_GLOBAL_FLUSH_A
;
1065 vtd_iotlb_global_invalidate(s
);
1068 case VTD_TLB_DSI_FLUSH
:
1069 domain_id
= VTD_TLB_DID(val
);
1070 VTD_DPRINTF(INV
, "domain-selective invalidation domain 0x%"PRIx16
,
1072 iaig
= VTD_TLB_DSI_FLUSH_A
;
1073 vtd_iotlb_domain_invalidate(s
, domain_id
);
1076 case VTD_TLB_PSI_FLUSH
:
1077 domain_id
= VTD_TLB_DID(val
);
1078 addr
= vtd_get_quad_raw(s
, DMAR_IVA_REG
);
1079 am
= VTD_IVA_AM(addr
);
1080 addr
= VTD_IVA_ADDR(addr
);
1081 VTD_DPRINTF(INV
, "page-selective invalidation domain 0x%"PRIx16
1082 " addr 0x%"PRIx64
" mask %"PRIu8
, domain_id
, addr
, am
);
1083 if (am
> VTD_MAMV
) {
1084 VTD_DPRINTF(GENERAL
, "error: supported max address mask value is "
1085 "%"PRIu8
, (uint8_t)VTD_MAMV
);
1089 iaig
= VTD_TLB_PSI_FLUSH_A
;
1090 vtd_iotlb_page_invalidate(s
, domain_id
, addr
, am
);
1094 VTD_DPRINTF(GENERAL
, "error: invalid granularity");
1100 static inline bool vtd_queued_inv_enable_check(IntelIOMMUState
*s
)
1102 return s
->iq_tail
== 0;
1105 static inline bool vtd_queued_inv_disable_check(IntelIOMMUState
*s
)
1107 return s
->qi_enabled
&& (s
->iq_tail
== s
->iq_head
) &&
1108 (s
->iq_last_desc_type
== VTD_INV_DESC_WAIT
);
1111 static void vtd_handle_gcmd_qie(IntelIOMMUState
*s
, bool en
)
1113 uint64_t iqa_val
= vtd_get_quad_raw(s
, DMAR_IQA_REG
);
1115 VTD_DPRINTF(INV
, "Queued Invalidation Enable %s", (en
? "on" : "off"));
1117 if (vtd_queued_inv_enable_check(s
)) {
1118 s
->iq
= iqa_val
& VTD_IQA_IQA_MASK
;
1119 /* 2^(x+8) entries */
1120 s
->iq_size
= 1UL << ((iqa_val
& VTD_IQA_QS
) + 8);
1121 s
->qi_enabled
= true;
1122 VTD_DPRINTF(INV
, "DMAR_IQA_REG 0x%"PRIx64
, iqa_val
);
1123 VTD_DPRINTF(INV
, "Invalidation Queue addr 0x%"PRIx64
" size %d",
1125 /* Ok - report back to driver */
1126 vtd_set_clear_mask_long(s
, DMAR_GSTS_REG
, 0, VTD_GSTS_QIES
);
1128 VTD_DPRINTF(GENERAL
, "error: can't enable Queued Invalidation: "
1129 "tail %"PRIu16
, s
->iq_tail
);
1132 if (vtd_queued_inv_disable_check(s
)) {
1133 /* disable Queued Invalidation */
1134 vtd_set_quad_raw(s
, DMAR_IQH_REG
, 0);
1136 s
->qi_enabled
= false;
1137 /* Ok - report back to driver */
1138 vtd_set_clear_mask_long(s
, DMAR_GSTS_REG
, VTD_GSTS_QIES
, 0);
1140 VTD_DPRINTF(GENERAL
, "error: can't disable Queued Invalidation: "
1141 "head %"PRIu16
", tail %"PRIu16
1142 ", last_descriptor %"PRIu8
,
1143 s
->iq_head
, s
->iq_tail
, s
->iq_last_desc_type
);
1148 /* Set Root Table Pointer */
1149 static void vtd_handle_gcmd_srtp(IntelIOMMUState
*s
)
1151 VTD_DPRINTF(CSR
, "set Root Table Pointer");
1153 vtd_root_table_setup(s
);
1154 /* Ok - report back to driver */
1155 vtd_set_clear_mask_long(s
, DMAR_GSTS_REG
, 0, VTD_GSTS_RTPS
);
1158 /* Set Interrupt Remap Table Pointer */
1159 static void vtd_handle_gcmd_sirtp(IntelIOMMUState
*s
)
1161 VTD_DPRINTF(CSR
, "set Interrupt Remap Table Pointer");
1163 vtd_interrupt_remap_table_setup(s
);
1164 /* Ok - report back to driver */
1165 vtd_set_clear_mask_long(s
, DMAR_GSTS_REG
, 0, VTD_GSTS_IRTPS
);
1168 /* Handle Translation Enable/Disable */
1169 static void vtd_handle_gcmd_te(IntelIOMMUState
*s
, bool en
)
1171 VTD_DPRINTF(CSR
, "Translation Enable %s", (en
? "on" : "off"));
1174 s
->dmar_enabled
= true;
1175 /* Ok - report back to driver */
1176 vtd_set_clear_mask_long(s
, DMAR_GSTS_REG
, 0, VTD_GSTS_TES
);
1178 s
->dmar_enabled
= false;
1180 /* Clear the index of Fault Recording Register */
1181 s
->next_frcd_reg
= 0;
1182 /* Ok - report back to driver */
1183 vtd_set_clear_mask_long(s
, DMAR_GSTS_REG
, VTD_GSTS_TES
, 0);
1187 /* Handle Interrupt Remap Enable/Disable */
1188 static void vtd_handle_gcmd_ire(IntelIOMMUState
*s
, bool en
)
1190 VTD_DPRINTF(CSR
, "Interrupt Remap Enable %s", (en
? "on" : "off"));
1193 s
->intr_enabled
= true;
1194 /* Ok - report back to driver */
1195 vtd_set_clear_mask_long(s
, DMAR_GSTS_REG
, 0, VTD_GSTS_IRES
);
1197 s
->intr_enabled
= false;
1198 /* Ok - report back to driver */
1199 vtd_set_clear_mask_long(s
, DMAR_GSTS_REG
, VTD_GSTS_IRES
, 0);
1203 /* Handle write to Global Command Register */
1204 static void vtd_handle_gcmd_write(IntelIOMMUState
*s
)
1206 uint32_t status
= vtd_get_long_raw(s
, DMAR_GSTS_REG
);
1207 uint32_t val
= vtd_get_long_raw(s
, DMAR_GCMD_REG
);
1208 uint32_t changed
= status
^ val
;
1210 VTD_DPRINTF(CSR
, "value 0x%"PRIx32
" status 0x%"PRIx32
, val
, status
);
1211 if (changed
& VTD_GCMD_TE
) {
1212 /* Translation enable/disable */
1213 vtd_handle_gcmd_te(s
, val
& VTD_GCMD_TE
);
1215 if (val
& VTD_GCMD_SRTP
) {
1216 /* Set/update the root-table pointer */
1217 vtd_handle_gcmd_srtp(s
);
1219 if (changed
& VTD_GCMD_QIE
) {
1220 /* Queued Invalidation Enable */
1221 vtd_handle_gcmd_qie(s
, val
& VTD_GCMD_QIE
);
1223 if (val
& VTD_GCMD_SIRTP
) {
1224 /* Set/update the interrupt remapping root-table pointer */
1225 vtd_handle_gcmd_sirtp(s
);
1227 if (changed
& VTD_GCMD_IRE
) {
1228 /* Interrupt remap enable/disable */
1229 vtd_handle_gcmd_ire(s
, val
& VTD_GCMD_IRE
);
1233 /* Handle write to Context Command Register */
1234 static void vtd_handle_ccmd_write(IntelIOMMUState
*s
)
1237 uint64_t val
= vtd_get_quad_raw(s
, DMAR_CCMD_REG
);
1239 /* Context-cache invalidation request */
1240 if (val
& VTD_CCMD_ICC
) {
1241 if (s
->qi_enabled
) {
1242 VTD_DPRINTF(GENERAL
, "error: Queued Invalidation enabled, "
1243 "should not use register-based invalidation");
1246 ret
= vtd_context_cache_invalidate(s
, val
);
1247 /* Invalidation completed. Change something to show */
1248 vtd_set_clear_mask_quad(s
, DMAR_CCMD_REG
, VTD_CCMD_ICC
, 0ULL);
1249 ret
= vtd_set_clear_mask_quad(s
, DMAR_CCMD_REG
, VTD_CCMD_CAIG_MASK
,
1251 VTD_DPRINTF(INV
, "CCMD_REG write-back val: 0x%"PRIx64
, ret
);
1255 /* Handle write to IOTLB Invalidation Register */
1256 static void vtd_handle_iotlb_write(IntelIOMMUState
*s
)
1259 uint64_t val
= vtd_get_quad_raw(s
, DMAR_IOTLB_REG
);
1261 /* IOTLB invalidation request */
1262 if (val
& VTD_TLB_IVT
) {
1263 if (s
->qi_enabled
) {
1264 VTD_DPRINTF(GENERAL
, "error: Queued Invalidation enabled, "
1265 "should not use register-based invalidation");
1268 ret
= vtd_iotlb_flush(s
, val
);
1269 /* Invalidation completed. Change something to show */
1270 vtd_set_clear_mask_quad(s
, DMAR_IOTLB_REG
, VTD_TLB_IVT
, 0ULL);
1271 ret
= vtd_set_clear_mask_quad(s
, DMAR_IOTLB_REG
,
1272 VTD_TLB_FLUSH_GRANU_MASK_A
, ret
);
1273 VTD_DPRINTF(INV
, "IOTLB_REG write-back val: 0x%"PRIx64
, ret
);
1277 /* Fetch an Invalidation Descriptor from the Invalidation Queue */
1278 static bool vtd_get_inv_desc(dma_addr_t base_addr
, uint32_t offset
,
1279 VTDInvDesc
*inv_desc
)
1281 dma_addr_t addr
= base_addr
+ offset
* sizeof(*inv_desc
);
1282 if (dma_memory_read(&address_space_memory
, addr
, inv_desc
,
1283 sizeof(*inv_desc
))) {
1284 VTD_DPRINTF(GENERAL
, "error: fail to fetch Invalidation Descriptor "
1285 "base_addr 0x%"PRIx64
" offset %"PRIu32
, base_addr
, offset
);
1291 inv_desc
->lo
= le64_to_cpu(inv_desc
->lo
);
1292 inv_desc
->hi
= le64_to_cpu(inv_desc
->hi
);
1296 static bool vtd_process_wait_desc(IntelIOMMUState
*s
, VTDInvDesc
*inv_desc
)
1298 if ((inv_desc
->hi
& VTD_INV_DESC_WAIT_RSVD_HI
) ||
1299 (inv_desc
->lo
& VTD_INV_DESC_WAIT_RSVD_LO
)) {
1300 VTD_DPRINTF(GENERAL
, "error: non-zero reserved field in Invalidation "
1301 "Wait Descriptor hi 0x%"PRIx64
" lo 0x%"PRIx64
,
1302 inv_desc
->hi
, inv_desc
->lo
);
1305 if (inv_desc
->lo
& VTD_INV_DESC_WAIT_SW
) {
1307 uint32_t status_data
= (uint32_t)(inv_desc
->lo
>>
1308 VTD_INV_DESC_WAIT_DATA_SHIFT
);
1310 assert(!(inv_desc
->lo
& VTD_INV_DESC_WAIT_IF
));
1312 /* FIXME: need to be masked with HAW? */
1313 dma_addr_t status_addr
= inv_desc
->hi
;
1314 VTD_DPRINTF(INV
, "status data 0x%x, status addr 0x%"PRIx64
,
1315 status_data
, status_addr
);
1316 status_data
= cpu_to_le32(status_data
);
1317 if (dma_memory_write(&address_space_memory
, status_addr
, &status_data
,
1318 sizeof(status_data
))) {
1319 VTD_DPRINTF(GENERAL
, "error: fail to perform a coherent write");
1322 } else if (inv_desc
->lo
& VTD_INV_DESC_WAIT_IF
) {
1323 /* Interrupt flag */
1324 VTD_DPRINTF(INV
, "Invalidation Wait Descriptor interrupt completion");
1325 vtd_generate_completion_event(s
);
1327 VTD_DPRINTF(GENERAL
, "error: invalid Invalidation Wait Descriptor: "
1328 "hi 0x%"PRIx64
" lo 0x%"PRIx64
, inv_desc
->hi
, inv_desc
->lo
);
1334 static bool vtd_process_context_cache_desc(IntelIOMMUState
*s
,
1335 VTDInvDesc
*inv_desc
)
1337 if ((inv_desc
->lo
& VTD_INV_DESC_CC_RSVD
) || inv_desc
->hi
) {
1338 VTD_DPRINTF(GENERAL
, "error: non-zero reserved field in Context-cache "
1339 "Invalidate Descriptor");
1342 switch (inv_desc
->lo
& VTD_INV_DESC_CC_G
) {
1343 case VTD_INV_DESC_CC_DOMAIN
:
1344 VTD_DPRINTF(INV
, "domain-selective invalidation domain 0x%"PRIx16
,
1345 (uint16_t)VTD_INV_DESC_CC_DID(inv_desc
->lo
));
1347 case VTD_INV_DESC_CC_GLOBAL
:
1348 VTD_DPRINTF(INV
, "global invalidation");
1349 vtd_context_global_invalidate(s
);
1352 case VTD_INV_DESC_CC_DEVICE
:
1353 vtd_context_device_invalidate(s
, VTD_INV_DESC_CC_SID(inv_desc
->lo
),
1354 VTD_INV_DESC_CC_FM(inv_desc
->lo
));
1358 VTD_DPRINTF(GENERAL
, "error: invalid granularity in Context-cache "
1359 "Invalidate Descriptor hi 0x%"PRIx64
" lo 0x%"PRIx64
,
1360 inv_desc
->hi
, inv_desc
->lo
);
1366 static bool vtd_process_iotlb_desc(IntelIOMMUState
*s
, VTDInvDesc
*inv_desc
)
1372 if ((inv_desc
->lo
& VTD_INV_DESC_IOTLB_RSVD_LO
) ||
1373 (inv_desc
->hi
& VTD_INV_DESC_IOTLB_RSVD_HI
)) {
1374 VTD_DPRINTF(GENERAL
, "error: non-zero reserved field in IOTLB "
1375 "Invalidate Descriptor hi 0x%"PRIx64
" lo 0x%"PRIx64
,
1376 inv_desc
->hi
, inv_desc
->lo
);
1380 switch (inv_desc
->lo
& VTD_INV_DESC_IOTLB_G
) {
1381 case VTD_INV_DESC_IOTLB_GLOBAL
:
1382 VTD_DPRINTF(INV
, "global invalidation");
1383 vtd_iotlb_global_invalidate(s
);
1386 case VTD_INV_DESC_IOTLB_DOMAIN
:
1387 domain_id
= VTD_INV_DESC_IOTLB_DID(inv_desc
->lo
);
1388 VTD_DPRINTF(INV
, "domain-selective invalidation domain 0x%"PRIx16
,
1390 vtd_iotlb_domain_invalidate(s
, domain_id
);
1393 case VTD_INV_DESC_IOTLB_PAGE
:
1394 domain_id
= VTD_INV_DESC_IOTLB_DID(inv_desc
->lo
);
1395 addr
= VTD_INV_DESC_IOTLB_ADDR(inv_desc
->hi
);
1396 am
= VTD_INV_DESC_IOTLB_AM(inv_desc
->hi
);
1397 VTD_DPRINTF(INV
, "page-selective invalidation domain 0x%"PRIx16
1398 " addr 0x%"PRIx64
" mask %"PRIu8
, domain_id
, addr
, am
);
1399 if (am
> VTD_MAMV
) {
1400 VTD_DPRINTF(GENERAL
, "error: supported max address mask value is "
1401 "%"PRIu8
, (uint8_t)VTD_MAMV
);
1404 vtd_iotlb_page_invalidate(s
, domain_id
, addr
, am
);
1408 VTD_DPRINTF(GENERAL
, "error: invalid granularity in IOTLB Invalidate "
1409 "Descriptor hi 0x%"PRIx64
" lo 0x%"PRIx64
,
1410 inv_desc
->hi
, inv_desc
->lo
);
1416 static bool vtd_process_inv_desc(IntelIOMMUState
*s
)
1418 VTDInvDesc inv_desc
;
1421 VTD_DPRINTF(INV
, "iq head %"PRIu16
, s
->iq_head
);
1422 if (!vtd_get_inv_desc(s
->iq
, s
->iq_head
, &inv_desc
)) {
1423 s
->iq_last_desc_type
= VTD_INV_DESC_NONE
;
1426 desc_type
= inv_desc
.lo
& VTD_INV_DESC_TYPE
;
1427 /* FIXME: should update at first or at last? */
1428 s
->iq_last_desc_type
= desc_type
;
1430 switch (desc_type
) {
1431 case VTD_INV_DESC_CC
:
1432 VTD_DPRINTF(INV
, "Context-cache Invalidate Descriptor hi 0x%"PRIx64
1433 " lo 0x%"PRIx64
, inv_desc
.hi
, inv_desc
.lo
);
1434 if (!vtd_process_context_cache_desc(s
, &inv_desc
)) {
1439 case VTD_INV_DESC_IOTLB
:
1440 VTD_DPRINTF(INV
, "IOTLB Invalidate Descriptor hi 0x%"PRIx64
1441 " lo 0x%"PRIx64
, inv_desc
.hi
, inv_desc
.lo
);
1442 if (!vtd_process_iotlb_desc(s
, &inv_desc
)) {
1447 case VTD_INV_DESC_WAIT
:
1448 VTD_DPRINTF(INV
, "Invalidation Wait Descriptor hi 0x%"PRIx64
1449 " lo 0x%"PRIx64
, inv_desc
.hi
, inv_desc
.lo
);
1450 if (!vtd_process_wait_desc(s
, &inv_desc
)) {
1455 case VTD_INV_DESC_IEC
:
1456 VTD_DPRINTF(INV
, "Interrupt Entry Cache Invalidation "
1457 "not implemented yet");
1459 * Since currently we do not cache interrupt entries, we can
1460 * just mark this descriptor as "good" and move on.
1465 VTD_DPRINTF(GENERAL
, "error: unkonw Invalidation Descriptor type "
1466 "hi 0x%"PRIx64
" lo 0x%"PRIx64
" type %"PRIu8
,
1467 inv_desc
.hi
, inv_desc
.lo
, desc_type
);
1471 if (s
->iq_head
== s
->iq_size
) {
1477 /* Try to fetch and process more Invalidation Descriptors */
1478 static void vtd_fetch_inv_desc(IntelIOMMUState
*s
)
1480 VTD_DPRINTF(INV
, "fetch Invalidation Descriptors");
1481 if (s
->iq_tail
>= s
->iq_size
) {
1482 /* Detects an invalid Tail pointer */
1483 VTD_DPRINTF(GENERAL
, "error: iq_tail is %"PRIu16
1484 " while iq_size is %"PRIu16
, s
->iq_tail
, s
->iq_size
);
1485 vtd_handle_inv_queue_error(s
);
1488 while (s
->iq_head
!= s
->iq_tail
) {
1489 if (!vtd_process_inv_desc(s
)) {
1490 /* Invalidation Queue Errors */
1491 vtd_handle_inv_queue_error(s
);
1494 /* Must update the IQH_REG in time */
1495 vtd_set_quad_raw(s
, DMAR_IQH_REG
,
1496 (((uint64_t)(s
->iq_head
)) << VTD_IQH_QH_SHIFT
) &
1501 /* Handle write to Invalidation Queue Tail Register */
1502 static void vtd_handle_iqt_write(IntelIOMMUState
*s
)
1504 uint64_t val
= vtd_get_quad_raw(s
, DMAR_IQT_REG
);
1506 s
->iq_tail
= VTD_IQT_QT(val
);
1507 VTD_DPRINTF(INV
, "set iq tail %"PRIu16
, s
->iq_tail
);
1508 if (s
->qi_enabled
&& !(vtd_get_long_raw(s
, DMAR_FSTS_REG
) & VTD_FSTS_IQE
)) {
1509 /* Process Invalidation Queue here */
1510 vtd_fetch_inv_desc(s
);
1514 static void vtd_handle_fsts_write(IntelIOMMUState
*s
)
1516 uint32_t fsts_reg
= vtd_get_long_raw(s
, DMAR_FSTS_REG
);
1517 uint32_t fectl_reg
= vtd_get_long_raw(s
, DMAR_FECTL_REG
);
1518 uint32_t status_fields
= VTD_FSTS_PFO
| VTD_FSTS_PPF
| VTD_FSTS_IQE
;
1520 if ((fectl_reg
& VTD_FECTL_IP
) && !(fsts_reg
& status_fields
)) {
1521 vtd_set_clear_mask_long(s
, DMAR_FECTL_REG
, VTD_FECTL_IP
, 0);
1522 VTD_DPRINTF(FLOG
, "all pending interrupt conditions serviced, clear "
1523 "IP field of FECTL_REG");
1525 /* FIXME: when IQE is Clear, should we try to fetch some Invalidation
1526 * Descriptors if there are any when Queued Invalidation is enabled?
1530 static void vtd_handle_fectl_write(IntelIOMMUState
*s
)
1533 /* FIXME: when software clears the IM field, check the IP field. But do we
1534 * need to compare the old value and the new value to conclude that
1535 * software clears the IM field? Or just check if the IM field is zero?
1537 fectl_reg
= vtd_get_long_raw(s
, DMAR_FECTL_REG
);
1538 if ((fectl_reg
& VTD_FECTL_IP
) && !(fectl_reg
& VTD_FECTL_IM
)) {
1539 vtd_generate_interrupt(s
, DMAR_FEADDR_REG
, DMAR_FEDATA_REG
);
1540 vtd_set_clear_mask_long(s
, DMAR_FECTL_REG
, VTD_FECTL_IP
, 0);
1541 VTD_DPRINTF(FLOG
, "IM field is cleared, generate "
1542 "fault event interrupt");
1546 static void vtd_handle_ics_write(IntelIOMMUState
*s
)
1548 uint32_t ics_reg
= vtd_get_long_raw(s
, DMAR_ICS_REG
);
1549 uint32_t iectl_reg
= vtd_get_long_raw(s
, DMAR_IECTL_REG
);
1551 if ((iectl_reg
& VTD_IECTL_IP
) && !(ics_reg
& VTD_ICS_IWC
)) {
1552 vtd_set_clear_mask_long(s
, DMAR_IECTL_REG
, VTD_IECTL_IP
, 0);
1553 VTD_DPRINTF(INV
, "pending completion interrupt condition serviced, "
1554 "clear IP field of IECTL_REG");
1558 static void vtd_handle_iectl_write(IntelIOMMUState
*s
)
1561 /* FIXME: when software clears the IM field, check the IP field. But do we
1562 * need to compare the old value and the new value to conclude that
1563 * software clears the IM field? Or just check if the IM field is zero?
1565 iectl_reg
= vtd_get_long_raw(s
, DMAR_IECTL_REG
);
1566 if ((iectl_reg
& VTD_IECTL_IP
) && !(iectl_reg
& VTD_IECTL_IM
)) {
1567 vtd_generate_interrupt(s
, DMAR_IEADDR_REG
, DMAR_IEDATA_REG
);
1568 vtd_set_clear_mask_long(s
, DMAR_IECTL_REG
, VTD_IECTL_IP
, 0);
1569 VTD_DPRINTF(INV
, "IM field is cleared, generate "
1570 "invalidation event interrupt");
1574 static uint64_t vtd_mem_read(void *opaque
, hwaddr addr
, unsigned size
)
1576 IntelIOMMUState
*s
= opaque
;
1579 if (addr
+ size
> DMAR_REG_SIZE
) {
1580 VTD_DPRINTF(GENERAL
, "error: addr outside region: max 0x%"PRIx64
1581 ", got 0x%"PRIx64
" %d",
1582 (uint64_t)DMAR_REG_SIZE
, addr
, size
);
1583 return (uint64_t)-1;
1587 /* Root Table Address Register, 64-bit */
1588 case DMAR_RTADDR_REG
:
1590 val
= s
->root
& ((1ULL << 32) - 1);
1596 case DMAR_RTADDR_REG_HI
:
1598 val
= s
->root
>> 32;
1601 /* Invalidation Queue Address Register, 64-bit */
1603 val
= s
->iq
| (vtd_get_quad(s
, DMAR_IQA_REG
) & VTD_IQA_QS
);
1605 val
= val
& ((1ULL << 32) - 1);
1609 case DMAR_IQA_REG_HI
:
1616 val
= vtd_get_long(s
, addr
);
1618 val
= vtd_get_quad(s
, addr
);
1621 VTD_DPRINTF(CSR
, "addr 0x%"PRIx64
" size %d val 0x%"PRIx64
,
1626 static void vtd_mem_write(void *opaque
, hwaddr addr
,
1627 uint64_t val
, unsigned size
)
1629 IntelIOMMUState
*s
= opaque
;
1631 if (addr
+ size
> DMAR_REG_SIZE
) {
1632 VTD_DPRINTF(GENERAL
, "error: addr outside region: max 0x%"PRIx64
1633 ", got 0x%"PRIx64
" %d",
1634 (uint64_t)DMAR_REG_SIZE
, addr
, size
);
1639 /* Global Command Register, 32-bit */
1641 VTD_DPRINTF(CSR
, "DMAR_GCMD_REG write addr 0x%"PRIx64
1642 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1643 vtd_set_long(s
, addr
, val
);
1644 vtd_handle_gcmd_write(s
);
1647 /* Context Command Register, 64-bit */
1649 VTD_DPRINTF(CSR
, "DMAR_CCMD_REG write addr 0x%"PRIx64
1650 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1652 vtd_set_long(s
, addr
, val
);
1654 vtd_set_quad(s
, addr
, val
);
1655 vtd_handle_ccmd_write(s
);
1659 case DMAR_CCMD_REG_HI
:
1660 VTD_DPRINTF(CSR
, "DMAR_CCMD_REG_HI write addr 0x%"PRIx64
1661 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1663 vtd_set_long(s
, addr
, val
);
1664 vtd_handle_ccmd_write(s
);
1667 /* IOTLB Invalidation Register, 64-bit */
1668 case DMAR_IOTLB_REG
:
1669 VTD_DPRINTF(INV
, "DMAR_IOTLB_REG write addr 0x%"PRIx64
1670 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1672 vtd_set_long(s
, addr
, val
);
1674 vtd_set_quad(s
, addr
, val
);
1675 vtd_handle_iotlb_write(s
);
1679 case DMAR_IOTLB_REG_HI
:
1680 VTD_DPRINTF(INV
, "DMAR_IOTLB_REG_HI write addr 0x%"PRIx64
1681 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1683 vtd_set_long(s
, addr
, val
);
1684 vtd_handle_iotlb_write(s
);
1687 /* Invalidate Address Register, 64-bit */
1689 VTD_DPRINTF(INV
, "DMAR_IVA_REG write addr 0x%"PRIx64
1690 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1692 vtd_set_long(s
, addr
, val
);
1694 vtd_set_quad(s
, addr
, val
);
1698 case DMAR_IVA_REG_HI
:
1699 VTD_DPRINTF(INV
, "DMAR_IVA_REG_HI write addr 0x%"PRIx64
1700 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1702 vtd_set_long(s
, addr
, val
);
1705 /* Fault Status Register, 32-bit */
1707 VTD_DPRINTF(FLOG
, "DMAR_FSTS_REG write addr 0x%"PRIx64
1708 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1710 vtd_set_long(s
, addr
, val
);
1711 vtd_handle_fsts_write(s
);
1714 /* Fault Event Control Register, 32-bit */
1715 case DMAR_FECTL_REG
:
1716 VTD_DPRINTF(FLOG
, "DMAR_FECTL_REG write addr 0x%"PRIx64
1717 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1719 vtd_set_long(s
, addr
, val
);
1720 vtd_handle_fectl_write(s
);
1723 /* Fault Event Data Register, 32-bit */
1724 case DMAR_FEDATA_REG
:
1725 VTD_DPRINTF(FLOG
, "DMAR_FEDATA_REG write addr 0x%"PRIx64
1726 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1728 vtd_set_long(s
, addr
, val
);
1731 /* Fault Event Address Register, 32-bit */
1732 case DMAR_FEADDR_REG
:
1733 VTD_DPRINTF(FLOG
, "DMAR_FEADDR_REG write addr 0x%"PRIx64
1734 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1736 vtd_set_long(s
, addr
, val
);
1739 /* Fault Event Upper Address Register, 32-bit */
1740 case DMAR_FEUADDR_REG
:
1741 VTD_DPRINTF(FLOG
, "DMAR_FEUADDR_REG write addr 0x%"PRIx64
1742 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1744 vtd_set_long(s
, addr
, val
);
1747 /* Protected Memory Enable Register, 32-bit */
1749 VTD_DPRINTF(CSR
, "DMAR_PMEN_REG write addr 0x%"PRIx64
1750 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1752 vtd_set_long(s
, addr
, val
);
1755 /* Root Table Address Register, 64-bit */
1756 case DMAR_RTADDR_REG
:
1757 VTD_DPRINTF(CSR
, "DMAR_RTADDR_REG write addr 0x%"PRIx64
1758 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1760 vtd_set_long(s
, addr
, val
);
1762 vtd_set_quad(s
, addr
, val
);
1766 case DMAR_RTADDR_REG_HI
:
1767 VTD_DPRINTF(CSR
, "DMAR_RTADDR_REG_HI write addr 0x%"PRIx64
1768 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1770 vtd_set_long(s
, addr
, val
);
1773 /* Invalidation Queue Tail Register, 64-bit */
1775 VTD_DPRINTF(INV
, "DMAR_IQT_REG write addr 0x%"PRIx64
1776 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1778 vtd_set_long(s
, addr
, val
);
1780 vtd_set_quad(s
, addr
, val
);
1782 vtd_handle_iqt_write(s
);
1785 case DMAR_IQT_REG_HI
:
1786 VTD_DPRINTF(INV
, "DMAR_IQT_REG_HI write addr 0x%"PRIx64
1787 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1789 vtd_set_long(s
, addr
, val
);
1790 /* 19:63 of IQT_REG is RsvdZ, do nothing here */
1793 /* Invalidation Queue Address Register, 64-bit */
1795 VTD_DPRINTF(INV
, "DMAR_IQA_REG write addr 0x%"PRIx64
1796 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1798 vtd_set_long(s
, addr
, val
);
1800 vtd_set_quad(s
, addr
, val
);
1804 case DMAR_IQA_REG_HI
:
1805 VTD_DPRINTF(INV
, "DMAR_IQA_REG_HI write addr 0x%"PRIx64
1806 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1808 vtd_set_long(s
, addr
, val
);
1811 /* Invalidation Completion Status Register, 32-bit */
1813 VTD_DPRINTF(INV
, "DMAR_ICS_REG write addr 0x%"PRIx64
1814 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1816 vtd_set_long(s
, addr
, val
);
1817 vtd_handle_ics_write(s
);
1820 /* Invalidation Event Control Register, 32-bit */
1821 case DMAR_IECTL_REG
:
1822 VTD_DPRINTF(INV
, "DMAR_IECTL_REG write addr 0x%"PRIx64
1823 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1825 vtd_set_long(s
, addr
, val
);
1826 vtd_handle_iectl_write(s
);
1829 /* Invalidation Event Data Register, 32-bit */
1830 case DMAR_IEDATA_REG
:
1831 VTD_DPRINTF(INV
, "DMAR_IEDATA_REG write addr 0x%"PRIx64
1832 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1834 vtd_set_long(s
, addr
, val
);
1837 /* Invalidation Event Address Register, 32-bit */
1838 case DMAR_IEADDR_REG
:
1839 VTD_DPRINTF(INV
, "DMAR_IEADDR_REG write addr 0x%"PRIx64
1840 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1842 vtd_set_long(s
, addr
, val
);
1845 /* Invalidation Event Upper Address Register, 32-bit */
1846 case DMAR_IEUADDR_REG
:
1847 VTD_DPRINTF(INV
, "DMAR_IEUADDR_REG write addr 0x%"PRIx64
1848 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1850 vtd_set_long(s
, addr
, val
);
1853 /* Fault Recording Registers, 128-bit */
1854 case DMAR_FRCD_REG_0_0
:
1855 VTD_DPRINTF(FLOG
, "DMAR_FRCD_REG_0_0 write addr 0x%"PRIx64
1856 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1858 vtd_set_long(s
, addr
, val
);
1860 vtd_set_quad(s
, addr
, val
);
1864 case DMAR_FRCD_REG_0_1
:
1865 VTD_DPRINTF(FLOG
, "DMAR_FRCD_REG_0_1 write addr 0x%"PRIx64
1866 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1868 vtd_set_long(s
, addr
, val
);
1871 case DMAR_FRCD_REG_0_2
:
1872 VTD_DPRINTF(FLOG
, "DMAR_FRCD_REG_0_2 write addr 0x%"PRIx64
1873 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1875 vtd_set_long(s
, addr
, val
);
1877 vtd_set_quad(s
, addr
, val
);
1878 /* May clear bit 127 (Fault), update PPF */
1879 vtd_update_fsts_ppf(s
);
1883 case DMAR_FRCD_REG_0_3
:
1884 VTD_DPRINTF(FLOG
, "DMAR_FRCD_REG_0_3 write addr 0x%"PRIx64
1885 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1887 vtd_set_long(s
, addr
, val
);
1888 /* May clear bit 127 (Fault), update PPF */
1889 vtd_update_fsts_ppf(s
);
1893 VTD_DPRINTF(IR
, "DMAR_IRTA_REG write addr 0x%"PRIx64
1894 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1896 vtd_set_long(s
, addr
, val
);
1898 vtd_set_quad(s
, addr
, val
);
1902 case DMAR_IRTA_REG_HI
:
1903 VTD_DPRINTF(IR
, "DMAR_IRTA_REG_HI write addr 0x%"PRIx64
1904 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1906 vtd_set_long(s
, addr
, val
);
1910 VTD_DPRINTF(GENERAL
, "error: unhandled reg write addr 0x%"PRIx64
1911 ", size %d, val 0x%"PRIx64
, addr
, size
, val
);
1913 vtd_set_long(s
, addr
, val
);
1915 vtd_set_quad(s
, addr
, val
);
1920 static IOMMUTLBEntry
vtd_iommu_translate(MemoryRegion
*iommu
, hwaddr addr
,
1923 VTDAddressSpace
*vtd_as
= container_of(iommu
, VTDAddressSpace
, iommu
);
1924 IntelIOMMUState
*s
= vtd_as
->iommu_state
;
1925 IOMMUTLBEntry ret
= {
1926 .target_as
= &address_space_memory
,
1928 .translated_addr
= 0,
1929 .addr_mask
= ~(hwaddr
)0,
1933 if (!s
->dmar_enabled
) {
1934 /* DMAR disabled, passthrough, use 4k-page*/
1935 ret
.iova
= addr
& VTD_PAGE_MASK_4K
;
1936 ret
.translated_addr
= addr
& VTD_PAGE_MASK_4K
;
1937 ret
.addr_mask
= ~VTD_PAGE_MASK_4K
;
1938 ret
.perm
= IOMMU_RW
;
1942 vtd_do_iommu_translate(vtd_as
, vtd_as
->bus
, vtd_as
->devfn
, addr
,
1945 "bus %"PRIu8
" slot %"PRIu8
" func %"PRIu8
" devfn %"PRIu8
1946 " gpa 0x%"PRIx64
" hpa 0x%"PRIx64
, pci_bus_num(vtd_as
->bus
),
1947 VTD_PCI_SLOT(vtd_as
->devfn
), VTD_PCI_FUNC(vtd_as
->devfn
),
1948 vtd_as
->devfn
, addr
, ret
.translated_addr
);
1952 static void vtd_iommu_notify_started(MemoryRegion
*iommu
)
1954 VTDAddressSpace
*vtd_as
= container_of(iommu
, VTDAddressSpace
, iommu
);
1956 hw_error("Device at bus %s addr %02x.%d requires iommu notifier which "
1957 "is currently not supported by intel-iommu emulation",
1958 vtd_as
->bus
->qbus
.name
, PCI_SLOT(vtd_as
->devfn
),
1959 PCI_FUNC(vtd_as
->devfn
));
1962 static const VMStateDescription vtd_vmstate
= {
1963 .name
= "iommu-intel",
1967 static const MemoryRegionOps vtd_mem_ops
= {
1968 .read
= vtd_mem_read
,
1969 .write
= vtd_mem_write
,
1970 .endianness
= DEVICE_LITTLE_ENDIAN
,
1972 .min_access_size
= 4,
1973 .max_access_size
= 8,
1976 .min_access_size
= 4,
1977 .max_access_size
= 8,
1981 static Property vtd_properties
[] = {
1982 DEFINE_PROP_UINT32("version", IntelIOMMUState
, version
, 0),
1983 DEFINE_PROP_END_OF_LIST(),
1986 /* Read IRTE entry with specific index */
1987 static int vtd_irte_get(IntelIOMMUState
*iommu
, uint16_t index
,
1990 dma_addr_t addr
= 0x00;
1992 addr
= iommu
->intr_root
+ index
* sizeof(*entry
);
1993 if (dma_memory_read(&address_space_memory
, addr
, entry
,
1995 VTD_DPRINTF(GENERAL
, "error: fail to access IR root at 0x%"PRIx64
1996 " + %"PRIu16
, iommu
->intr_root
, index
);
1997 return -VTD_FR_IR_ROOT_INVAL
;
2000 if (!entry
->present
) {
2001 VTD_DPRINTF(GENERAL
, "error: present flag not set in IRTE"
2002 " entry index %u value 0x%"PRIx64
" 0x%"PRIx64
,
2003 index
, le64_to_cpu(entry
->data
[1]),
2004 le64_to_cpu(entry
->data
[0]));
2005 return -VTD_FR_IR_ENTRY_P
;
2008 if (entry
->__reserved_0
|| entry
->__reserved_1
|| \
2009 entry
->__reserved_2
) {
2010 VTD_DPRINTF(GENERAL
, "error: IRTE entry index %"PRIu16
2011 " reserved fields non-zero: 0x%"PRIx64
" 0x%"PRIx64
,
2012 index
, le64_to_cpu(entry
->data
[1]),
2013 le64_to_cpu(entry
->data
[0]));
2014 return -VTD_FR_IR_IRTE_RSVD
;
2018 * TODO: Check Source-ID corresponds to SVT (Source Validation
2025 /* Fetch IRQ information of specific IR index */
2026 static int vtd_remap_irq_get(IntelIOMMUState
*iommu
, uint16_t index
, VTDIrq
*irq
)
2031 ret
= vtd_irte_get(iommu
, index
, &irte
);
2036 irq
->trigger_mode
= irte
.trigger_mode
;
2037 irq
->vector
= irte
.vector
;
2038 irq
->delivery_mode
= irte
.delivery_mode
;
2039 /* Not support EIM yet: please refer to vt-d 9.10 DST bits */
2040 #define VTD_IR_APIC_DEST_MASK (0xff00ULL)
2041 #define VTD_IR_APIC_DEST_SHIFT (8)
2042 irq
->dest
= (le32_to_cpu(irte
.dest_id
) & VTD_IR_APIC_DEST_MASK
) >> \
2043 VTD_IR_APIC_DEST_SHIFT
;
2044 irq
->dest_mode
= irte
.dest_mode
;
2045 irq
->redir_hint
= irte
.redir_hint
;
2047 VTD_DPRINTF(IR
, "remapping interrupt index %d: trig:%u,vec:%u,"
2048 "deliver:%u,dest:%u,dest_mode:%u", index
,
2049 irq
->trigger_mode
, irq
->vector
, irq
->delivery_mode
,
2050 irq
->dest
, irq
->dest_mode
);
2055 /* Generate one MSI message from VTDIrq info */
2056 static void vtd_generate_msi_message(VTDIrq
*irq
, MSIMessage
*msg_out
)
2058 VTD_MSIMessage msg
= {};
2060 /* Generate address bits */
2061 msg
.dest_mode
= irq
->dest_mode
;
2062 msg
.redir_hint
= irq
->redir_hint
;
2063 msg
.dest
= irq
->dest
;
2064 msg
.__addr_head
= cpu_to_le32(0xfee);
2065 /* Keep this from original MSI address bits */
2066 msg
.__not_used
= irq
->msi_addr_last_bits
;
2068 /* Generate data bits */
2069 msg
.vector
= irq
->vector
;
2070 msg
.delivery_mode
= irq
->delivery_mode
;
2072 msg
.trigger_mode
= irq
->trigger_mode
;
2074 msg_out
->address
= msg
.msi_addr
;
2075 msg_out
->data
= msg
.msi_data
;
2078 /* Interrupt remapping for MSI/MSI-X entry */
2079 static int vtd_interrupt_remap_msi(IntelIOMMUState
*iommu
,
2081 MSIMessage
*translated
)
2084 VTD_IR_MSIAddress addr
;
2088 assert(origin
&& translated
);
2090 if (!iommu
|| !iommu
->intr_enabled
) {
2091 goto do_not_translate
;
2094 if (origin
->address
& VTD_MSI_ADDR_HI_MASK
) {
2095 VTD_DPRINTF(GENERAL
, "error: MSI addr high 32 bits nonzero"
2096 " during interrupt remapping: 0x%"PRIx32
,
2097 (uint32_t)((origin
->address
& VTD_MSI_ADDR_HI_MASK
) >> \
2098 VTD_MSI_ADDR_HI_SHIFT
));
2099 return -VTD_FR_IR_REQ_RSVD
;
2102 addr
.data
= origin
->address
& VTD_MSI_ADDR_LO_MASK
;
2103 if (le16_to_cpu(addr
.__head
) != 0xfee) {
2104 VTD_DPRINTF(GENERAL
, "error: MSI addr low 32 bits invalid: "
2105 "0x%"PRIx32
, addr
.data
);
2106 return -VTD_FR_IR_REQ_RSVD
;
2109 /* This is compatible mode. */
2110 if (addr
.int_mode
!= VTD_IR_INT_FORMAT_REMAP
) {
2111 goto do_not_translate
;
2114 index
= addr
.index_h
<< 15 | le16_to_cpu(addr
.index_l
);
2116 #define VTD_IR_MSI_DATA_SUBHANDLE (0x0000ffff)
2117 #define VTD_IR_MSI_DATA_RESERVED (0xffff0000)
2119 if (addr
.sub_valid
) {
2120 /* See VT-d spec 5.1.2.2 and 5.1.3 on subhandle */
2121 index
+= origin
->data
& VTD_IR_MSI_DATA_SUBHANDLE
;
2124 ret
= vtd_remap_irq_get(iommu
, index
, &irq
);
2129 if (addr
.sub_valid
) {
2130 VTD_DPRINTF(IR
, "received MSI interrupt");
2131 if (origin
->data
& VTD_IR_MSI_DATA_RESERVED
) {
2132 VTD_DPRINTF(GENERAL
, "error: MSI data bits non-zero for "
2133 "interrupt remappable entry: 0x%"PRIx32
,
2135 return -VTD_FR_IR_REQ_RSVD
;
2138 uint8_t vector
= origin
->data
& 0xff;
2139 VTD_DPRINTF(IR
, "received IOAPIC interrupt");
2140 /* IOAPIC entry vector should be aligned with IRTE vector
2141 * (see vt-d spec 5.1.5.1). */
2142 if (vector
!= irq
.vector
) {
2143 VTD_DPRINTF(GENERAL
, "IOAPIC vector inconsistent: "
2144 "entry: %d, IRTE: %d, index: %d",
2145 vector
, irq
.vector
, index
);
2150 * We'd better keep the last two bits, assuming that guest OS
2151 * might modify it. Keep it does not hurt after all.
2153 irq
.msi_addr_last_bits
= addr
.__not_care
;
2155 /* Translate VTDIrq to MSI message */
2156 vtd_generate_msi_message(&irq
, translated
);
2158 VTD_DPRINTF(IR
, "mapping MSI 0x%"PRIx64
":0x%"PRIx32
" -> "
2159 "0x%"PRIx64
":0x%"PRIx32
, origin
->address
, origin
->data
,
2160 translated
->address
, translated
->data
);
2164 memcpy(translated
, origin
, sizeof(*origin
));
2168 static int vtd_int_remap(X86IOMMUState
*iommu
, MSIMessage
*src
,
2169 MSIMessage
*dst
, uint16_t sid
)
2171 return vtd_interrupt_remap_msi(INTEL_IOMMU_DEVICE(iommu
), src
, dst
);
2174 static MemTxResult
vtd_mem_ir_read(void *opaque
, hwaddr addr
,
2175 uint64_t *data
, unsigned size
,
2181 static MemTxResult
vtd_mem_ir_write(void *opaque
, hwaddr addr
,
2182 uint64_t value
, unsigned size
,
2186 MSIMessage from
= {}, to
= {};
2188 from
.address
= (uint64_t) addr
+ VTD_INTERRUPT_ADDR_FIRST
;
2189 from
.data
= (uint32_t) value
;
2191 ret
= vtd_interrupt_remap_msi(opaque
, &from
, &to
);
2193 /* TODO: report error */
2194 VTD_DPRINTF(GENERAL
, "int remap fail for addr 0x%"PRIx64
2195 " data 0x%"PRIx32
, from
.address
, from
.data
);
2196 /* Drop this interrupt */
2200 VTD_DPRINTF(IR
, "delivering MSI 0x%"PRIx64
":0x%"PRIx32
2201 " for device sid 0x%04x",
2202 to
.address
, to
.data
, sid
);
2204 if (dma_memory_write(&address_space_memory
, to
.address
,
2206 VTD_DPRINTF(GENERAL
, "error: fail to write 0x%"PRIx64
2207 " value 0x%"PRIx32
, to
.address
, to
.data
);
2213 static const MemoryRegionOps vtd_mem_ir_ops
= {
2214 .read_with_attrs
= vtd_mem_ir_read
,
2215 .write_with_attrs
= vtd_mem_ir_write
,
2216 .endianness
= DEVICE_LITTLE_ENDIAN
,
2218 .min_access_size
= 4,
2219 .max_access_size
= 4,
2222 .min_access_size
= 4,
2223 .max_access_size
= 4,
2227 VTDAddressSpace
*vtd_find_add_as(IntelIOMMUState
*s
, PCIBus
*bus
, int devfn
)
2229 uintptr_t key
= (uintptr_t)bus
;
2230 VTDBus
*vtd_bus
= g_hash_table_lookup(s
->vtd_as_by_busptr
, &key
);
2231 VTDAddressSpace
*vtd_dev_as
;
2234 /* No corresponding free() */
2235 vtd_bus
= g_malloc0(sizeof(VTDBus
) + sizeof(VTDAddressSpace
*) * \
2236 X86_IOMMU_PCI_DEVFN_MAX
);
2238 key
= (uintptr_t)bus
;
2239 g_hash_table_insert(s
->vtd_as_by_busptr
, &key
, vtd_bus
);
2242 vtd_dev_as
= vtd_bus
->dev_as
[devfn
];
2245 vtd_bus
->dev_as
[devfn
] = vtd_dev_as
= g_malloc0(sizeof(VTDAddressSpace
));
2247 vtd_dev_as
->bus
= bus
;
2248 vtd_dev_as
->devfn
= (uint8_t)devfn
;
2249 vtd_dev_as
->iommu_state
= s
;
2250 vtd_dev_as
->context_cache_entry
.context_cache_gen
= 0;
2251 memory_region_init_iommu(&vtd_dev_as
->iommu
, OBJECT(s
),
2252 &s
->iommu_ops
, "intel_iommu", UINT64_MAX
);
2253 memory_region_init_io(&vtd_dev_as
->iommu_ir
, OBJECT(s
),
2254 &vtd_mem_ir_ops
, s
, "intel_iommu_ir",
2255 VTD_INTERRUPT_ADDR_SIZE
);
2256 memory_region_add_subregion(&vtd_dev_as
->iommu
, VTD_INTERRUPT_ADDR_FIRST
,
2257 &vtd_dev_as
->iommu_ir
);
2258 address_space_init(&vtd_dev_as
->as
,
2259 &vtd_dev_as
->iommu
, "intel_iommu");
2264 /* Do the initialization. It will also be called when reset, so pay
2265 * attention when adding new initialization stuff.
2267 static void vtd_init(IntelIOMMUState
*s
)
2269 X86IOMMUState
*x86_iommu
= X86_IOMMU_DEVICE(s
);
2271 memset(s
->csr
, 0, DMAR_REG_SIZE
);
2272 memset(s
->wmask
, 0, DMAR_REG_SIZE
);
2273 memset(s
->w1cmask
, 0, DMAR_REG_SIZE
);
2274 memset(s
->womask
, 0, DMAR_REG_SIZE
);
2276 s
->iommu_ops
.translate
= vtd_iommu_translate
;
2277 s
->iommu_ops
.notify_started
= vtd_iommu_notify_started
;
2279 s
->root_extended
= false;
2280 s
->dmar_enabled
= false;
2285 s
->qi_enabled
= false;
2286 s
->iq_last_desc_type
= VTD_INV_DESC_NONE
;
2287 s
->next_frcd_reg
= 0;
2288 s
->cap
= VTD_CAP_FRO
| VTD_CAP_NFR
| VTD_CAP_ND
| VTD_CAP_MGAW
|
2289 VTD_CAP_SAGAW
| VTD_CAP_MAMV
| VTD_CAP_PSI
| VTD_CAP_SLLPS
;
2290 s
->ecap
= VTD_ECAP_QI
| VTD_ECAP_IRO
;
2292 if (x86_iommu
->intr_supported
) {
2293 s
->ecap
|= VTD_ECAP_IR
;
2296 vtd_reset_context_cache(s
);
2299 /* Define registers with default values and bit semantics */
2300 vtd_define_long(s
, DMAR_VER_REG
, 0x10UL
, 0, 0);
2301 vtd_define_quad(s
, DMAR_CAP_REG
, s
->cap
, 0, 0);
2302 vtd_define_quad(s
, DMAR_ECAP_REG
, s
->ecap
, 0, 0);
2303 vtd_define_long(s
, DMAR_GCMD_REG
, 0, 0xff800000UL
, 0);
2304 vtd_define_long_wo(s
, DMAR_GCMD_REG
, 0xff800000UL
);
2305 vtd_define_long(s
, DMAR_GSTS_REG
, 0, 0, 0);
2306 vtd_define_quad(s
, DMAR_RTADDR_REG
, 0, 0xfffffffffffff000ULL
, 0);
2307 vtd_define_quad(s
, DMAR_CCMD_REG
, 0, 0xe0000003ffffffffULL
, 0);
2308 vtd_define_quad_wo(s
, DMAR_CCMD_REG
, 0x3ffff0000ULL
);
2310 /* Advanced Fault Logging not supported */
2311 vtd_define_long(s
, DMAR_FSTS_REG
, 0, 0, 0x11UL
);
2312 vtd_define_long(s
, DMAR_FECTL_REG
, 0x80000000UL
, 0x80000000UL
, 0);
2313 vtd_define_long(s
, DMAR_FEDATA_REG
, 0, 0x0000ffffUL
, 0);
2314 vtd_define_long(s
, DMAR_FEADDR_REG
, 0, 0xfffffffcUL
, 0);
2316 /* Treated as RsvdZ when EIM in ECAP_REG is not supported
2317 * vtd_define_long(s, DMAR_FEUADDR_REG, 0, 0xffffffffUL, 0);
2319 vtd_define_long(s
, DMAR_FEUADDR_REG
, 0, 0, 0);
2321 /* Treated as RO for implementations that PLMR and PHMR fields reported
2322 * as Clear in the CAP_REG.
2323 * vtd_define_long(s, DMAR_PMEN_REG, 0, 0x80000000UL, 0);
2325 vtd_define_long(s
, DMAR_PMEN_REG
, 0, 0, 0);
2327 vtd_define_quad(s
, DMAR_IQH_REG
, 0, 0, 0);
2328 vtd_define_quad(s
, DMAR_IQT_REG
, 0, 0x7fff0ULL
, 0);
2329 vtd_define_quad(s
, DMAR_IQA_REG
, 0, 0xfffffffffffff007ULL
, 0);
2330 vtd_define_long(s
, DMAR_ICS_REG
, 0, 0, 0x1UL
);
2331 vtd_define_long(s
, DMAR_IECTL_REG
, 0x80000000UL
, 0x80000000UL
, 0);
2332 vtd_define_long(s
, DMAR_IEDATA_REG
, 0, 0xffffffffUL
, 0);
2333 vtd_define_long(s
, DMAR_IEADDR_REG
, 0, 0xfffffffcUL
, 0);
2334 /* Treadted as RsvdZ when EIM in ECAP_REG is not supported */
2335 vtd_define_long(s
, DMAR_IEUADDR_REG
, 0, 0, 0);
2337 /* IOTLB registers */
2338 vtd_define_quad(s
, DMAR_IOTLB_REG
, 0, 0Xb003ffff00000000ULL
, 0);
2339 vtd_define_quad(s
, DMAR_IVA_REG
, 0, 0xfffffffffffff07fULL
, 0);
2340 vtd_define_quad_wo(s
, DMAR_IVA_REG
, 0xfffffffffffff07fULL
);
2342 /* Fault Recording Registers, 128-bit */
2343 vtd_define_quad(s
, DMAR_FRCD_REG_0_0
, 0, 0, 0);
2344 vtd_define_quad(s
, DMAR_FRCD_REG_0_2
, 0, 0, 0x8000000000000000ULL
);
2347 * Interrupt remapping registers, not support extended interrupt
2350 vtd_define_quad(s
, DMAR_IRTA_REG
, 0, 0xfffffffffffff00fULL
, 0);
2353 /* Should not reset address_spaces when reset because devices will still use
2354 * the address space they got at first (won't ask the bus again).
2356 static void vtd_reset(DeviceState
*dev
)
2358 IntelIOMMUState
*s
= INTEL_IOMMU_DEVICE(dev
);
2360 VTD_DPRINTF(GENERAL
, "");
2364 static AddressSpace
*vtd_host_dma_iommu(PCIBus
*bus
, void *opaque
, int devfn
)
2366 IntelIOMMUState
*s
= opaque
;
2367 VTDAddressSpace
*vtd_as
;
2369 assert(0 <= devfn
&& devfn
<= X86_IOMMU_PCI_DEVFN_MAX
);
2371 vtd_as
= vtd_find_add_as(s
, bus
, devfn
);
2375 static void vtd_realize(DeviceState
*dev
, Error
**errp
)
2377 PCMachineState
*pcms
= PC_MACHINE(qdev_get_machine());
2378 PCIBus
*bus
= pcms
->bus
;
2379 IntelIOMMUState
*s
= INTEL_IOMMU_DEVICE(dev
);
2381 VTD_DPRINTF(GENERAL
, "");
2382 memset(s
->vtd_as_by_bus_num
, 0, sizeof(s
->vtd_as_by_bus_num
));
2383 memory_region_init_io(&s
->csrmem
, OBJECT(s
), &vtd_mem_ops
, s
,
2384 "intel_iommu", DMAR_REG_SIZE
);
2385 sysbus_init_mmio(SYS_BUS_DEVICE(s
), &s
->csrmem
);
2386 /* No corresponding destroy */
2387 s
->iotlb
= g_hash_table_new_full(vtd_uint64_hash
, vtd_uint64_equal
,
2389 s
->vtd_as_by_busptr
= g_hash_table_new_full(vtd_uint64_hash
, vtd_uint64_equal
,
2392 sysbus_mmio_map(SYS_BUS_DEVICE(s
), 0, Q35_HOST_BRIDGE_IOMMU_ADDR
);
2393 pci_setup_iommu(bus
, vtd_host_dma_iommu
, dev
);
2394 /* Pseudo address space under root PCI bus. */
2395 pcms
->ioapic_as
= vtd_host_dma_iommu(bus
, s
, Q35_PSEUDO_DEVFN_IOAPIC
);
2398 static void vtd_class_init(ObjectClass
*klass
, void *data
)
2400 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2401 X86IOMMUClass
*x86_class
= X86_IOMMU_CLASS(klass
);
2403 dc
->reset
= vtd_reset
;
2404 dc
->vmsd
= &vtd_vmstate
;
2405 dc
->props
= vtd_properties
;
2406 dc
->hotpluggable
= false;
2407 x86_class
->realize
= vtd_realize
;
2408 x86_class
->int_remap
= vtd_int_remap
;
2411 static const TypeInfo vtd_info
= {
2412 .name
= TYPE_INTEL_IOMMU_DEVICE
,
2413 .parent
= TYPE_X86_IOMMU_DEVICE
,
2414 .instance_size
= sizeof(IntelIOMMUState
),
2415 .class_init
= vtd_class_init
,
2418 static void vtd_register_types(void)
2420 VTD_DPRINTF(GENERAL
, "");
2421 type_register_static(&vtd_info
);
2424 type_init(vtd_register_types
)