4 * Copyright 2014 IBM Corp.
5 * Author(s): Frank Blaschka <frank.blaschka@de.ibm.com>
6 * Hong Bo Li <lihbbj@cn.ibm.com>
7 * Yi Min Zhao <zyimin@cn.ibm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2 or (at
10 * your option) any later version. See the COPYING file in the top-level
14 #include "qemu/osdep.h"
15 #include "qapi/error.h"
16 #include "qapi/visitor.h"
17 #include "qemu-common.h"
19 #include "s390-pci-bus.h"
20 #include "s390-pci-inst.h"
21 #include "hw/pci/pci_bus.h"
22 #include "hw/pci/pci_bridge.h"
23 #include "hw/pci/msi.h"
24 #include "qemu/error-report.h"
26 #ifndef DEBUG_S390PCI_BUS
27 #define DEBUG_S390PCI_BUS 0
30 #define DPRINTF(fmt, ...) \
32 if (DEBUG_S390PCI_BUS) { \
33 fprintf(stderr, "S390pci-bus: " fmt, ## __VA_ARGS__); \
37 S390pciState
*s390_get_phb(void)
39 static S390pciState
*phb
;
42 phb
= S390_PCI_HOST_BRIDGE(
43 object_resolve_path(TYPE_S390_PCI_HOST_BRIDGE
, NULL
));
50 int pci_chsc_sei_nt2_get_event(void *res
)
52 ChscSeiNt2Res
*nt2_res
= (ChscSeiNt2Res
*)res
;
56 SeiContainer
*sei_cont
;
57 S390pciState
*s
= s390_get_phb();
59 sei_cont
= QTAILQ_FIRST(&s
->pending_sei
);
61 QTAILQ_REMOVE(&s
->pending_sei
, sei_cont
, link
);
63 nt2_res
->cc
= sei_cont
->cc
;
64 nt2_res
->length
= cpu_to_be16(sizeof(ChscSeiNt2Res
));
65 switch (sei_cont
->cc
) {
66 case 1: /* error event */
67 eccdf
= (PciCcdfErr
*)nt2_res
->ccdf
;
68 eccdf
->fid
= cpu_to_be32(sei_cont
->fid
);
69 eccdf
->fh
= cpu_to_be32(sei_cont
->fh
);
70 eccdf
->e
= cpu_to_be32(sei_cont
->e
);
71 eccdf
->faddr
= cpu_to_be64(sei_cont
->faddr
);
72 eccdf
->pec
= cpu_to_be16(sei_cont
->pec
);
74 case 2: /* availability event */
75 accdf
= (PciCcdfAvail
*)nt2_res
->ccdf
;
76 accdf
->fid
= cpu_to_be32(sei_cont
->fid
);
77 accdf
->fh
= cpu_to_be32(sei_cont
->fh
);
78 accdf
->pec
= cpu_to_be16(sei_cont
->pec
);
90 int pci_chsc_sei_nt2_have_event(void)
92 S390pciState
*s
= s390_get_phb();
94 return !QTAILQ_EMPTY(&s
->pending_sei
);
97 S390PCIBusDevice
*s390_pci_find_next_avail_dev(S390pciState
*s
,
98 S390PCIBusDevice
*pbdev
)
100 S390PCIBusDevice
*ret
= pbdev
? QTAILQ_NEXT(pbdev
, link
) :
101 QTAILQ_FIRST(&s
->zpci_devs
);
103 while (ret
&& ret
->state
== ZPCI_FS_RESERVED
) {
104 ret
= QTAILQ_NEXT(ret
, link
);
110 S390PCIBusDevice
*s390_pci_find_dev_by_fid(S390pciState
*s
, uint32_t fid
)
112 S390PCIBusDevice
*pbdev
;
114 QTAILQ_FOREACH(pbdev
, &s
->zpci_devs
, link
) {
115 if (pbdev
->fid
== fid
) {
123 void s390_pci_sclp_configure(SCCB
*sccb
)
125 IoaCfgSccb
*psccb
= (IoaCfgSccb
*)sccb
;
126 S390PCIBusDevice
*pbdev
= s390_pci_find_dev_by_fid(s390_get_phb(),
127 be32_to_cpu(psccb
->aid
));
131 DPRINTF("sclp config no dev found\n");
132 rc
= SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED
;
136 switch (pbdev
->state
) {
137 case ZPCI_FS_RESERVED
:
138 rc
= SCLP_RC_ADAPTER_IN_RESERVED_STATE
;
140 case ZPCI_FS_STANDBY
:
141 pbdev
->state
= ZPCI_FS_DISABLED
;
142 rc
= SCLP_RC_NORMAL_COMPLETION
;
145 rc
= SCLP_RC_NO_ACTION_REQUIRED
;
148 psccb
->header
.response_code
= cpu_to_be16(rc
);
151 void s390_pci_sclp_deconfigure(SCCB
*sccb
)
153 IoaCfgSccb
*psccb
= (IoaCfgSccb
*)sccb
;
154 S390PCIBusDevice
*pbdev
= s390_pci_find_dev_by_fid(s390_get_phb(),
155 be32_to_cpu(psccb
->aid
));
159 DPRINTF("sclp deconfig no dev found\n");
160 rc
= SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED
;
164 switch (pbdev
->state
) {
165 case ZPCI_FS_RESERVED
:
166 rc
= SCLP_RC_ADAPTER_IN_RESERVED_STATE
;
168 case ZPCI_FS_STANDBY
:
169 rc
= SCLP_RC_NO_ACTION_REQUIRED
;
172 if (pbdev
->summary_ind
) {
173 pci_dereg_irqs(pbdev
);
175 if (pbdev
->iommu
->enabled
) {
176 pci_dereg_ioat(pbdev
->iommu
);
178 pbdev
->state
= ZPCI_FS_STANDBY
;
179 rc
= SCLP_RC_NORMAL_COMPLETION
;
181 if (pbdev
->release_timer
) {
182 qdev_unplug(DEVICE(pbdev
->pdev
), NULL
);
186 psccb
->header
.response_code
= cpu_to_be16(rc
);
189 static S390PCIBusDevice
*s390_pci_find_dev_by_uid(S390pciState
*s
, uint16_t uid
)
191 S390PCIBusDevice
*pbdev
;
193 QTAILQ_FOREACH(pbdev
, &s
->zpci_devs
, link
) {
194 if (pbdev
->uid
== uid
) {
202 S390PCIBusDevice
*s390_pci_find_dev_by_target(S390pciState
*s
,
205 S390PCIBusDevice
*pbdev
;
211 QTAILQ_FOREACH(pbdev
, &s
->zpci_devs
, link
) {
212 if (!strcmp(pbdev
->target
, target
)) {
220 S390PCIBusDevice
*s390_pci_find_dev_by_idx(S390pciState
*s
, uint32_t idx
)
222 return g_hash_table_lookup(s
->zpci_table
, &idx
);
225 S390PCIBusDevice
*s390_pci_find_dev_by_fh(S390pciState
*s
, uint32_t fh
)
227 uint32_t idx
= FH_MASK_INDEX
& fh
;
228 S390PCIBusDevice
*pbdev
= s390_pci_find_dev_by_idx(s
, idx
);
230 if (pbdev
&& pbdev
->fh
== fh
) {
237 static void s390_pci_generate_event(uint8_t cc
, uint16_t pec
, uint32_t fh
,
238 uint32_t fid
, uint64_t faddr
, uint32_t e
)
240 SeiContainer
*sei_cont
;
241 S390pciState
*s
= s390_get_phb();
243 sei_cont
= g_malloc0(sizeof(SeiContainer
));
248 sei_cont
->faddr
= faddr
;
251 QTAILQ_INSERT_TAIL(&s
->pending_sei
, sei_cont
, link
);
252 css_generate_css_crws(0);
255 static void s390_pci_generate_plug_event(uint16_t pec
, uint32_t fh
,
258 s390_pci_generate_event(2, pec
, fh
, fid
, 0, 0);
261 void s390_pci_generate_error_event(uint16_t pec
, uint32_t fh
, uint32_t fid
,
262 uint64_t faddr
, uint32_t e
)
264 s390_pci_generate_event(1, pec
, fh
, fid
, faddr
, e
);
267 static void s390_pci_set_irq(void *opaque
, int irq
, int level
)
272 static int s390_pci_map_irq(PCIDevice
*pci_dev
, int irq_num
)
278 static uint64_t s390_pci_get_table_origin(uint64_t iota
)
280 return iota
& ~ZPCI_IOTA_RTTO_FLAG
;
283 static unsigned int calc_rtx(dma_addr_t ptr
)
285 return ((unsigned long) ptr
>> ZPCI_RT_SHIFT
) & ZPCI_INDEX_MASK
;
288 static unsigned int calc_sx(dma_addr_t ptr
)
290 return ((unsigned long) ptr
>> ZPCI_ST_SHIFT
) & ZPCI_INDEX_MASK
;
293 static unsigned int calc_px(dma_addr_t ptr
)
295 return ((unsigned long) ptr
>> PAGE_SHIFT
) & ZPCI_PT_MASK
;
298 static uint64_t get_rt_sto(uint64_t entry
)
300 return ((entry
& ZPCI_TABLE_TYPE_MASK
) == ZPCI_TABLE_TYPE_RTX
)
301 ? (entry
& ZPCI_RTE_ADDR_MASK
)
305 static uint64_t get_st_pto(uint64_t entry
)
307 return ((entry
& ZPCI_TABLE_TYPE_MASK
) == ZPCI_TABLE_TYPE_SX
)
308 ? (entry
& ZPCI_STE_ADDR_MASK
)
312 static uint64_t s390_guest_io_table_walk(uint64_t guest_iota
,
313 uint64_t guest_dma_address
)
315 uint64_t sto_a
, pto_a
, px_a
;
316 uint64_t sto
, pto
, pte
;
317 uint32_t rtx
, sx
, px
;
319 rtx
= calc_rtx(guest_dma_address
);
320 sx
= calc_sx(guest_dma_address
);
321 px
= calc_px(guest_dma_address
);
323 sto_a
= guest_iota
+ rtx
* sizeof(uint64_t);
324 sto
= address_space_ldq(&address_space_memory
, sto_a
,
325 MEMTXATTRS_UNSPECIFIED
, NULL
);
326 sto
= get_rt_sto(sto
);
332 pto_a
= sto
+ sx
* sizeof(uint64_t);
333 pto
= address_space_ldq(&address_space_memory
, pto_a
,
334 MEMTXATTRS_UNSPECIFIED
, NULL
);
335 pto
= get_st_pto(pto
);
341 px_a
= pto
+ px
* sizeof(uint64_t);
342 pte
= address_space_ldq(&address_space_memory
, px_a
,
343 MEMTXATTRS_UNSPECIFIED
, NULL
);
349 static IOMMUTLBEntry
s390_translate_iommu(IOMMUMemoryRegion
*mr
, hwaddr addr
,
350 IOMMUAccessFlags flag
)
354 S390PCIIOMMU
*iommu
= container_of(mr
, S390PCIIOMMU
, iommu_mr
);
355 IOMMUTLBEntry ret
= {
356 .target_as
= &address_space_memory
,
358 .translated_addr
= 0,
359 .addr_mask
= ~(hwaddr
)0,
363 switch (iommu
->pbdev
->state
) {
364 case ZPCI_FS_ENABLED
:
365 case ZPCI_FS_BLOCKED
:
366 if (!iommu
->enabled
) {
374 DPRINTF("iommu trans addr 0x%" PRIx64
"\n", addr
);
376 if (addr
< iommu
->pba
|| addr
> iommu
->pal
) {
380 pte
= s390_guest_io_table_walk(s390_pci_get_table_origin(iommu
->g_iota
),
386 flags
= pte
& ZPCI_PTE_FLAG_MASK
;
388 ret
.translated_addr
= pte
& ZPCI_PTE_ADDR_MASK
;
389 ret
.addr_mask
= 0xfff;
391 if (flags
& ZPCI_PTE_INVALID
) {
392 ret
.perm
= IOMMU_NONE
;
400 static void s390_pci_iommu_replay(IOMMUMemoryRegion
*iommu
,
401 IOMMUNotifier
*notifier
)
403 /* It's impossible to plug a pci device on s390x that already has iommu
404 * mappings which need to be replayed, that is due to the "one iommu per
405 * zpci device" construct. But when we support migration of vfio-pci
406 * devices in future, we need to revisit this.
411 static S390PCIIOMMU
*s390_pci_get_iommu(S390pciState
*s
, PCIBus
*bus
,
414 uint64_t key
= (uintptr_t)bus
;
415 S390PCIIOMMUTable
*table
= g_hash_table_lookup(s
->iommu_table
, &key
);
419 table
= g_malloc0(sizeof(S390PCIIOMMUTable
));
421 g_hash_table_insert(s
->iommu_table
, &table
->key
, table
);
424 iommu
= table
->iommu
[PCI_SLOT(devfn
)];
426 iommu
= S390_PCI_IOMMU(object_new(TYPE_S390_PCI_IOMMU
));
428 char *mr_name
= g_strdup_printf("iommu-root-%02x:%02x.%01x",
432 char *as_name
= g_strdup_printf("iommu-pci-%02x:%02x.%01x",
436 memory_region_init(&iommu
->mr
, OBJECT(iommu
), mr_name
, UINT64_MAX
);
437 address_space_init(&iommu
->as
, &iommu
->mr
, as_name
);
438 table
->iommu
[PCI_SLOT(devfn
)] = iommu
;
447 static AddressSpace
*s390_pci_dma_iommu(PCIBus
*bus
, void *opaque
, int devfn
)
449 S390pciState
*s
= opaque
;
450 S390PCIIOMMU
*iommu
= s390_pci_get_iommu(s
, bus
, devfn
);
455 static uint8_t set_ind_atomic(uint64_t ind_loc
, uint8_t to_be_set
)
457 uint8_t ind_old
, ind_new
;
461 ind_addr
= cpu_physical_memory_map(ind_loc
, &len
, 1);
463 s390_pci_generate_error_event(ERR_EVENT_AIRERR
, 0, 0, 0, 0);
468 ind_new
= ind_old
| to_be_set
;
469 } while (atomic_cmpxchg(ind_addr
, ind_old
, ind_new
) != ind_old
);
470 cpu_physical_memory_unmap(ind_addr
, len
, 1, len
);
475 static void s390_msi_ctrl_write(void *opaque
, hwaddr addr
, uint64_t data
,
478 S390PCIBusDevice
*pbdev
= opaque
;
479 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
484 DPRINTF("write_msix data 0x%" PRIx64
" idx %d vec 0x%x\n", data
,
487 if (pbdev
->state
!= ZPCI_FS_ENABLED
) {
491 ind_bit
= pbdev
->routes
.adapter
.ind_offset
;
492 sum_bit
= pbdev
->routes
.adapter
.summary_offset
;
494 set_ind_atomic(pbdev
->routes
.adapter
.ind_addr
+ (ind_bit
+ vec
) / 8,
495 0x80 >> ((ind_bit
+ vec
) % 8));
496 if (!set_ind_atomic(pbdev
->routes
.adapter
.summary_addr
+ sum_bit
/ 8,
497 0x80 >> (sum_bit
% 8))) {
498 css_adapter_interrupt(CSS_IO_ADAPTER_PCI
, pbdev
->isc
);
502 static uint64_t s390_msi_ctrl_read(void *opaque
, hwaddr addr
, unsigned size
)
507 static const MemoryRegionOps s390_msi_ctrl_ops
= {
508 .write
= s390_msi_ctrl_write
,
509 .read
= s390_msi_ctrl_read
,
510 .endianness
= DEVICE_LITTLE_ENDIAN
,
513 void s390_pci_iommu_enable(S390PCIIOMMU
*iommu
)
515 char *name
= g_strdup_printf("iommu-s390-%04x", iommu
->pbdev
->uid
);
516 memory_region_init_iommu(&iommu
->iommu_mr
, sizeof(iommu
->iommu_mr
),
517 TYPE_S390_IOMMU_MEMORY_REGION
, OBJECT(&iommu
->mr
),
518 name
, iommu
->pal
+ 1);
519 iommu
->enabled
= true;
520 memory_region_add_subregion(&iommu
->mr
, 0, MEMORY_REGION(&iommu
->iommu_mr
));
524 void s390_pci_iommu_disable(S390PCIIOMMU
*iommu
)
526 iommu
->enabled
= false;
527 memory_region_del_subregion(&iommu
->mr
, MEMORY_REGION(&iommu
->iommu_mr
));
528 object_unparent(OBJECT(&iommu
->iommu_mr
));
531 static void s390_pci_iommu_free(S390pciState
*s
, PCIBus
*bus
, int32_t devfn
)
533 uint64_t key
= (uintptr_t)bus
;
534 S390PCIIOMMUTable
*table
= g_hash_table_lookup(s
->iommu_table
, &key
);
535 S390PCIIOMMU
*iommu
= table
? table
->iommu
[PCI_SLOT(devfn
)] : NULL
;
537 if (!table
|| !iommu
) {
541 table
->iommu
[PCI_SLOT(devfn
)] = NULL
;
542 address_space_destroy(&iommu
->as
);
543 object_unparent(OBJECT(&iommu
->mr
));
544 object_unparent(OBJECT(iommu
));
545 object_unref(OBJECT(iommu
));
548 static int s390_pcihost_init(SysBusDevice
*dev
)
552 PCIHostState
*phb
= PCI_HOST_BRIDGE(dev
);
553 S390pciState
*s
= S390_PCI_HOST_BRIDGE(dev
);
555 DPRINTF("host_init\n");
557 b
= pci_register_bus(DEVICE(dev
), NULL
,
558 s390_pci_set_irq
, s390_pci_map_irq
, NULL
,
559 get_system_memory(), get_system_io(), 0, 64,
561 pci_setup_iommu(b
, s390_pci_dma_iommu
, s
);
564 qbus_set_hotplug_handler(bus
, DEVICE(dev
), NULL
);
567 s
->bus
= S390_PCI_BUS(qbus_create(TYPE_S390_PCI_BUS
, DEVICE(s
), NULL
));
568 qbus_set_hotplug_handler(BUS(s
->bus
), DEVICE(s
), NULL
);
570 s
->iommu_table
= g_hash_table_new_full(g_int64_hash
, g_int64_equal
,
572 s
->zpci_table
= g_hash_table_new_full(g_int_hash
, g_int_equal
, NULL
, NULL
);
574 QTAILQ_INIT(&s
->pending_sei
);
575 QTAILQ_INIT(&s
->zpci_devs
);
577 css_register_io_adapters(CSS_IO_ADAPTER_PCI
, true, false,
578 S390_ADAPTER_SUPPRESSIBLE
, &error_abort
);
583 static int s390_pci_msix_init(S390PCIBusDevice
*pbdev
)
590 pos
= pci_find_capability(pbdev
->pdev
, PCI_CAP_ID_MSIX
);
592 pbdev
->msix
.available
= false;
596 ctrl
= pci_host_config_read_common(pbdev
->pdev
, pos
+ PCI_MSIX_FLAGS
,
597 pci_config_size(pbdev
->pdev
), sizeof(ctrl
));
598 table
= pci_host_config_read_common(pbdev
->pdev
, pos
+ PCI_MSIX_TABLE
,
599 pci_config_size(pbdev
->pdev
), sizeof(table
));
600 pba
= pci_host_config_read_common(pbdev
->pdev
, pos
+ PCI_MSIX_PBA
,
601 pci_config_size(pbdev
->pdev
), sizeof(pba
));
603 pbdev
->msix
.table_bar
= table
& PCI_MSIX_FLAGS_BIRMASK
;
604 pbdev
->msix
.table_offset
= table
& ~PCI_MSIX_FLAGS_BIRMASK
;
605 pbdev
->msix
.pba_bar
= pba
& PCI_MSIX_FLAGS_BIRMASK
;
606 pbdev
->msix
.pba_offset
= pba
& ~PCI_MSIX_FLAGS_BIRMASK
;
607 pbdev
->msix
.entries
= (ctrl
& PCI_MSIX_FLAGS_QSIZE
) + 1;
608 pbdev
->msix
.available
= true;
610 name
= g_strdup_printf("msix-s390-%04x", pbdev
->uid
);
611 memory_region_init_io(&pbdev
->msix_notify_mr
, OBJECT(pbdev
),
612 &s390_msi_ctrl_ops
, pbdev
, name
, PAGE_SIZE
);
613 memory_region_add_subregion(&pbdev
->iommu
->mr
, ZPCI_MSI_ADDR
,
614 &pbdev
->msix_notify_mr
);
620 static void s390_pci_msix_free(S390PCIBusDevice
*pbdev
)
622 memory_region_del_subregion(&pbdev
->iommu
->mr
, &pbdev
->msix_notify_mr
);
623 object_unparent(OBJECT(&pbdev
->msix_notify_mr
));
626 static S390PCIBusDevice
*s390_pci_device_new(S390pciState
*s
,
629 DeviceState
*dev
= NULL
;
631 dev
= qdev_try_create(BUS(s
->bus
), TYPE_S390_PCI_DEVICE
);
636 qdev_prop_set_string(dev
, "target", target
);
637 qdev_init_nofail(dev
);
639 return S390_PCI_DEVICE(dev
);
642 static bool s390_pci_alloc_idx(S390pciState
*s
, S390PCIBusDevice
*pbdev
)
647 while (s390_pci_find_dev_by_idx(s
, idx
)) {
648 idx
= (idx
+ 1) & FH_MASK_INDEX
;
649 if (idx
== s
->next_idx
) {
655 s
->next_idx
= (idx
+ 1) & FH_MASK_INDEX
;
660 static void s390_pcihost_hot_plug(HotplugHandler
*hotplug_dev
,
661 DeviceState
*dev
, Error
**errp
)
663 PCIDevice
*pdev
= NULL
;
664 S390PCIBusDevice
*pbdev
= NULL
;
665 S390pciState
*s
= s390_get_phb();
667 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_BRIDGE
)) {
669 PCIBridge
*pb
= PCI_BRIDGE(dev
);
670 PCIDevice
*pdev
= PCI_DEVICE(dev
);
672 pci_bridge_map_irq(pb
, dev
->id
, s390_pci_map_irq
);
673 pci_setup_iommu(&pb
->sec_bus
, s390_pci_dma_iommu
, s
);
675 bus
= BUS(&pb
->sec_bus
);
676 qbus_set_hotplug_handler(bus
, DEVICE(s
), errp
);
678 if (dev
->hotplugged
) {
679 pci_default_write_config(pdev
, PCI_PRIMARY_BUS
, s
->bus_no
, 1);
681 pci_default_write_config(pdev
, PCI_SECONDARY_BUS
, s
->bus_no
, 1);
683 pdev
= pdev
->bus
->parent_dev
;
684 pci_default_write_config(pdev
, PCI_SUBORDINATE_BUS
,
686 } while (pdev
->bus
&& pci_bus_num(pdev
->bus
));
688 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
689 pdev
= PCI_DEVICE(dev
);
692 /* In the case the PCI device does not define an id */
693 /* we generate one based on the PCI address */
694 dev
->id
= g_strdup_printf("auto_%02x:%02x.%01x",
695 pci_bus_num(pdev
->bus
),
696 PCI_SLOT(pdev
->devfn
),
697 PCI_FUNC(pdev
->devfn
));
700 pbdev
= s390_pci_find_dev_by_target(s
, dev
->id
);
702 pbdev
= s390_pci_device_new(s
, dev
->id
);
704 error_setg(errp
, "create zpci device failed");
709 if (object_dynamic_cast(OBJECT(dev
), "vfio-pci")) {
710 pbdev
->fh
|= FH_SHM_VFIO
;
712 pbdev
->fh
|= FH_SHM_EMUL
;
716 pbdev
->iommu
= s390_pci_get_iommu(s
, pdev
->bus
, pdev
->devfn
);
717 pbdev
->iommu
->pbdev
= pbdev
;
718 pbdev
->state
= ZPCI_FS_STANDBY
;
720 if (s390_pci_msix_init(pbdev
)) {
721 error_setg(errp
, "MSI-X support is mandatory "
722 "in the S390 architecture");
726 if (dev
->hotplugged
) {
727 s390_pci_generate_plug_event(HP_EVENT_RESERVED_TO_STANDBY
,
728 pbdev
->fh
, pbdev
->fid
);
730 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_S390_PCI_DEVICE
)) {
731 pbdev
= S390_PCI_DEVICE(dev
);
733 if (!s390_pci_alloc_idx(s
, pbdev
)) {
734 error_setg(errp
, "no slot for plugging zpci device");
737 pbdev
->fh
= pbdev
->idx
;
738 QTAILQ_INSERT_TAIL(&s
->zpci_devs
, pbdev
, link
);
739 g_hash_table_insert(s
->zpci_table
, &pbdev
->idx
, pbdev
);
743 static void s390_pcihost_timer_cb(void *opaque
)
745 S390PCIBusDevice
*pbdev
= opaque
;
747 if (pbdev
->summary_ind
) {
748 pci_dereg_irqs(pbdev
);
750 if (pbdev
->iommu
->enabled
) {
751 pci_dereg_ioat(pbdev
->iommu
);
754 pbdev
->state
= ZPCI_FS_STANDBY
;
755 s390_pci_generate_plug_event(HP_EVENT_CONFIGURED_TO_STBRES
,
756 pbdev
->fh
, pbdev
->fid
);
757 qdev_unplug(DEVICE(pbdev
), NULL
);
760 static void s390_pcihost_hot_unplug(HotplugHandler
*hotplug_dev
,
761 DeviceState
*dev
, Error
**errp
)
763 PCIDevice
*pci_dev
= NULL
;
766 S390PCIBusDevice
*pbdev
= NULL
;
767 S390pciState
*s
= s390_get_phb();
769 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_BRIDGE
)) {
770 error_setg(errp
, "PCI bridge hot unplug currently not supported");
772 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
773 pci_dev
= PCI_DEVICE(dev
);
775 QTAILQ_FOREACH(pbdev
, &s
->zpci_devs
, link
) {
776 if (pbdev
->pdev
== pci_dev
) {
780 assert(pbdev
!= NULL
);
781 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_S390_PCI_DEVICE
)) {
782 pbdev
= S390_PCI_DEVICE(dev
);
783 pci_dev
= pbdev
->pdev
;
786 switch (pbdev
->state
) {
787 case ZPCI_FS_RESERVED
:
789 case ZPCI_FS_STANDBY
:
792 s390_pci_generate_plug_event(HP_EVENT_DECONFIGURE_REQUEST
,
793 pbdev
->fh
, pbdev
->fid
);
794 pbdev
->release_timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
,
795 s390_pcihost_timer_cb
,
797 timer_mod(pbdev
->release_timer
,
798 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) + HOT_UNPLUG_TIMEOUT
);
802 if (pbdev
->release_timer
&& timer_pending(pbdev
->release_timer
)) {
803 timer_del(pbdev
->release_timer
);
804 timer_free(pbdev
->release_timer
);
805 pbdev
->release_timer
= NULL
;
808 s390_pci_generate_plug_event(HP_EVENT_STANDBY_TO_RESERVED
,
809 pbdev
->fh
, pbdev
->fid
);
811 devfn
= pci_dev
->devfn
;
812 object_unparent(OBJECT(pci_dev
));
813 s390_pci_msix_free(pbdev
);
814 s390_pci_iommu_free(s
, bus
, devfn
);
816 pbdev
->state
= ZPCI_FS_RESERVED
;
819 QTAILQ_REMOVE(&s
->zpci_devs
, pbdev
, link
);
820 g_hash_table_remove(s
->zpci_table
, &pbdev
->idx
);
821 object_unparent(OBJECT(pbdev
));
824 static void s390_pci_enumerate_bridge(PCIBus
*bus
, PCIDevice
*pdev
,
827 S390pciState
*s
= opaque
;
828 unsigned int primary
= s
->bus_no
;
829 unsigned int subordinate
= 0xff;
830 PCIBus
*sec_bus
= NULL
;
832 if ((pci_default_read_config(pdev
, PCI_HEADER_TYPE
, 1) !=
833 PCI_HEADER_TYPE_BRIDGE
)) {
838 pci_default_write_config(pdev
, PCI_PRIMARY_BUS
, primary
, 1);
839 pci_default_write_config(pdev
, PCI_SECONDARY_BUS
, s
->bus_no
, 1);
840 pci_default_write_config(pdev
, PCI_SUBORDINATE_BUS
, s
->bus_no
, 1);
842 sec_bus
= pci_bridge_get_sec_bus(PCI_BRIDGE(pdev
));
847 pci_default_write_config(pdev
, PCI_SUBORDINATE_BUS
, subordinate
, 1);
848 pci_for_each_device(sec_bus
, pci_bus_num(sec_bus
),
849 s390_pci_enumerate_bridge
, s
);
850 pci_default_write_config(pdev
, PCI_SUBORDINATE_BUS
, s
->bus_no
, 1);
853 static void s390_pcihost_reset(DeviceState
*dev
)
855 S390pciState
*s
= S390_PCI_HOST_BRIDGE(dev
);
856 PCIBus
*bus
= s
->parent_obj
.bus
;
859 pci_for_each_device(bus
, pci_bus_num(bus
), s390_pci_enumerate_bridge
, s
);
862 static void s390_pcihost_class_init(ObjectClass
*klass
, void *data
)
864 SysBusDeviceClass
*k
= SYS_BUS_DEVICE_CLASS(klass
);
865 DeviceClass
*dc
= DEVICE_CLASS(klass
);
866 HotplugHandlerClass
*hc
= HOTPLUG_HANDLER_CLASS(klass
);
868 dc
->reset
= s390_pcihost_reset
;
869 k
->init
= s390_pcihost_init
;
870 hc
->plug
= s390_pcihost_hot_plug
;
871 hc
->unplug
= s390_pcihost_hot_unplug
;
872 msi_nonbroken
= true;
875 static const TypeInfo s390_pcihost_info
= {
876 .name
= TYPE_S390_PCI_HOST_BRIDGE
,
877 .parent
= TYPE_PCI_HOST_BRIDGE
,
878 .instance_size
= sizeof(S390pciState
),
879 .class_init
= s390_pcihost_class_init
,
880 .interfaces
= (InterfaceInfo
[]) {
881 { TYPE_HOTPLUG_HANDLER
},
886 static const TypeInfo s390_pcibus_info
= {
887 .name
= TYPE_S390_PCI_BUS
,
889 .instance_size
= sizeof(S390PCIBus
),
892 static uint16_t s390_pci_generate_uid(S390pciState
*s
)
898 if (!s390_pci_find_dev_by_uid(s
, uid
)) {
901 } while (uid
< ZPCI_MAX_UID
);
903 return UID_UNDEFINED
;
906 static uint32_t s390_pci_generate_fid(S390pciState
*s
, Error
**errp
)
911 if (!s390_pci_find_dev_by_fid(s
, fid
)) {
914 } while (fid
++ != ZPCI_MAX_FID
);
916 error_setg(errp
, "no free fid could be found");
920 static void s390_pci_device_realize(DeviceState
*dev
, Error
**errp
)
922 S390PCIBusDevice
*zpci
= S390_PCI_DEVICE(dev
);
923 S390pciState
*s
= s390_get_phb();
926 error_setg(errp
, "target must be defined");
930 if (s390_pci_find_dev_by_target(s
, zpci
->target
)) {
931 error_setg(errp
, "target %s already has an associated zpci device",
936 if (zpci
->uid
== UID_UNDEFINED
) {
937 zpci
->uid
= s390_pci_generate_uid(s
);
939 error_setg(errp
, "no free uid could be found");
942 } else if (s390_pci_find_dev_by_uid(s
, zpci
->uid
)) {
943 error_setg(errp
, "uid %u already in use", zpci
->uid
);
947 if (!zpci
->fid_defined
) {
948 Error
*local_error
= NULL
;
950 zpci
->fid
= s390_pci_generate_fid(s
, &local_error
);
952 error_propagate(errp
, local_error
);
955 } else if (s390_pci_find_dev_by_fid(s
, zpci
->fid
)) {
956 error_setg(errp
, "fid %u already in use", zpci
->fid
);
960 zpci
->state
= ZPCI_FS_RESERVED
;
963 static void s390_pci_device_reset(DeviceState
*dev
)
965 S390PCIBusDevice
*pbdev
= S390_PCI_DEVICE(dev
);
967 switch (pbdev
->state
) {
968 case ZPCI_FS_RESERVED
:
970 case ZPCI_FS_STANDBY
:
973 pbdev
->fh
&= ~FH_MASK_ENABLE
;
974 pbdev
->state
= ZPCI_FS_DISABLED
;
978 if (pbdev
->summary_ind
) {
979 pci_dereg_irqs(pbdev
);
981 if (pbdev
->iommu
->enabled
) {
982 pci_dereg_ioat(pbdev
->iommu
);
988 static void s390_pci_get_fid(Object
*obj
, Visitor
*v
, const char *name
,
989 void *opaque
, Error
**errp
)
991 Property
*prop
= opaque
;
992 uint32_t *ptr
= qdev_get_prop_ptr(DEVICE(obj
), prop
);
994 visit_type_uint32(v
, name
, ptr
, errp
);
997 static void s390_pci_set_fid(Object
*obj
, Visitor
*v
, const char *name
,
998 void *opaque
, Error
**errp
)
1000 DeviceState
*dev
= DEVICE(obj
);
1001 S390PCIBusDevice
*zpci
= S390_PCI_DEVICE(obj
);
1002 Property
*prop
= opaque
;
1003 uint32_t *ptr
= qdev_get_prop_ptr(dev
, prop
);
1005 if (dev
->realized
) {
1006 qdev_prop_set_after_realize(dev
, name
, errp
);
1010 visit_type_uint32(v
, name
, ptr
, errp
);
1011 zpci
->fid_defined
= true;
1014 static const PropertyInfo s390_pci_fid_propinfo
= {
1016 .get
= s390_pci_get_fid
,
1017 .set
= s390_pci_set_fid
,
1020 #define DEFINE_PROP_S390_PCI_FID(_n, _s, _f) \
1021 DEFINE_PROP(_n, _s, _f, s390_pci_fid_propinfo, uint32_t)
1023 static Property s390_pci_device_properties
[] = {
1024 DEFINE_PROP_UINT16("uid", S390PCIBusDevice
, uid
, UID_UNDEFINED
),
1025 DEFINE_PROP_S390_PCI_FID("fid", S390PCIBusDevice
, fid
),
1026 DEFINE_PROP_STRING("target", S390PCIBusDevice
, target
),
1027 DEFINE_PROP_END_OF_LIST(),
1030 static void s390_pci_device_class_init(ObjectClass
*klass
, void *data
)
1032 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1034 dc
->desc
= "zpci device";
1035 set_bit(DEVICE_CATEGORY_MISC
, dc
->categories
);
1036 dc
->reset
= s390_pci_device_reset
;
1037 dc
->bus_type
= TYPE_S390_PCI_BUS
;
1038 dc
->realize
= s390_pci_device_realize
;
1039 dc
->props
= s390_pci_device_properties
;
1042 static const TypeInfo s390_pci_device_info
= {
1043 .name
= TYPE_S390_PCI_DEVICE
,
1044 .parent
= TYPE_DEVICE
,
1045 .instance_size
= sizeof(S390PCIBusDevice
),
1046 .class_init
= s390_pci_device_class_init
,
1049 static TypeInfo s390_pci_iommu_info
= {
1050 .name
= TYPE_S390_PCI_IOMMU
,
1051 .parent
= TYPE_OBJECT
,
1052 .instance_size
= sizeof(S390PCIIOMMU
),
1055 static void s390_iommu_memory_region_class_init(ObjectClass
*klass
, void *data
)
1057 IOMMUMemoryRegionClass
*imrc
= IOMMU_MEMORY_REGION_CLASS(klass
);
1059 imrc
->translate
= s390_translate_iommu
;
1060 imrc
->replay
= s390_pci_iommu_replay
;
1063 static const TypeInfo s390_iommu_memory_region_info
= {
1064 .parent
= TYPE_IOMMU_MEMORY_REGION
,
1065 .name
= TYPE_S390_IOMMU_MEMORY_REGION
,
1066 .class_init
= s390_iommu_memory_region_class_init
,
1069 static void s390_pci_register_types(void)
1071 type_register_static(&s390_pcihost_info
);
1072 type_register_static(&s390_pcibus_info
);
1073 type_register_static(&s390_pci_device_info
);
1074 type_register_static(&s390_pci_iommu_info
);
1075 type_register_static(&s390_iommu_memory_region_info
);
1078 type_init(s390_pci_register_types
)