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 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 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 PciCfgSccb
*psccb
= (PciCfgSccb
*)sccb
;
126 S390PCIBusDevice
*pbdev
= s390_pci_find_dev_by_fid(s390_get_phb(),
127 be32_to_cpu(psccb
->aid
));
130 if (be16_to_cpu(sccb
->h
.length
) < 16) {
131 rc
= SCLP_RC_INSUFFICIENT_SCCB_LENGTH
;
136 DPRINTF("sclp config no dev found\n");
137 rc
= SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED
;
141 switch (pbdev
->state
) {
142 case ZPCI_FS_RESERVED
:
143 rc
= SCLP_RC_ADAPTER_IN_RESERVED_STATE
;
145 case ZPCI_FS_STANDBY
:
146 pbdev
->state
= ZPCI_FS_DISABLED
;
147 rc
= SCLP_RC_NORMAL_COMPLETION
;
150 rc
= SCLP_RC_NO_ACTION_REQUIRED
;
153 psccb
->header
.response_code
= cpu_to_be16(rc
);
156 void s390_pci_sclp_deconfigure(SCCB
*sccb
)
158 PciCfgSccb
*psccb
= (PciCfgSccb
*)sccb
;
159 S390PCIBusDevice
*pbdev
= s390_pci_find_dev_by_fid(s390_get_phb(),
160 be32_to_cpu(psccb
->aid
));
163 if (be16_to_cpu(sccb
->h
.length
) < 16) {
164 rc
= SCLP_RC_INSUFFICIENT_SCCB_LENGTH
;
169 DPRINTF("sclp deconfig no dev found\n");
170 rc
= SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED
;
174 switch (pbdev
->state
) {
175 case ZPCI_FS_RESERVED
:
176 rc
= SCLP_RC_ADAPTER_IN_RESERVED_STATE
;
178 case ZPCI_FS_STANDBY
:
179 rc
= SCLP_RC_NO_ACTION_REQUIRED
;
182 if (pbdev
->summary_ind
) {
183 pci_dereg_irqs(pbdev
);
185 if (pbdev
->iommu
->enabled
) {
186 pci_dereg_ioat(pbdev
->iommu
);
188 pbdev
->state
= ZPCI_FS_STANDBY
;
189 rc
= SCLP_RC_NORMAL_COMPLETION
;
191 if (pbdev
->release_timer
) {
192 qdev_unplug(DEVICE(pbdev
->pdev
), NULL
);
196 psccb
->header
.response_code
= cpu_to_be16(rc
);
199 static S390PCIBusDevice
*s390_pci_find_dev_by_uid(S390pciState
*s
, uint16_t uid
)
201 S390PCIBusDevice
*pbdev
;
203 QTAILQ_FOREACH(pbdev
, &s
->zpci_devs
, link
) {
204 if (pbdev
->uid
== uid
) {
212 static S390PCIBusDevice
*s390_pci_find_dev_by_target(S390pciState
*s
,
215 S390PCIBusDevice
*pbdev
;
221 QTAILQ_FOREACH(pbdev
, &s
->zpci_devs
, link
) {
222 if (!strcmp(pbdev
->target
, target
)) {
230 S390PCIBusDevice
*s390_pci_find_dev_by_idx(S390pciState
*s
, uint32_t idx
)
232 return g_hash_table_lookup(s
->zpci_table
, &idx
);
235 S390PCIBusDevice
*s390_pci_find_dev_by_fh(S390pciState
*s
, uint32_t fh
)
237 uint32_t idx
= FH_MASK_INDEX
& fh
;
238 S390PCIBusDevice
*pbdev
= s390_pci_find_dev_by_idx(s
, idx
);
240 if (pbdev
&& pbdev
->fh
== fh
) {
247 static void s390_pci_generate_event(uint8_t cc
, uint16_t pec
, uint32_t fh
,
248 uint32_t fid
, uint64_t faddr
, uint32_t e
)
250 SeiContainer
*sei_cont
;
251 S390pciState
*s
= s390_get_phb();
253 sei_cont
= g_malloc0(sizeof(SeiContainer
));
258 sei_cont
->faddr
= faddr
;
261 QTAILQ_INSERT_TAIL(&s
->pending_sei
, sei_cont
, link
);
262 css_generate_css_crws(0);
265 static void s390_pci_generate_plug_event(uint16_t pec
, uint32_t fh
,
268 s390_pci_generate_event(2, pec
, fh
, fid
, 0, 0);
271 void s390_pci_generate_error_event(uint16_t pec
, uint32_t fh
, uint32_t fid
,
272 uint64_t faddr
, uint32_t e
)
274 s390_pci_generate_event(1, pec
, fh
, fid
, faddr
, e
);
277 static void s390_pci_set_irq(void *opaque
, int irq
, int level
)
282 static int s390_pci_map_irq(PCIDevice
*pci_dev
, int irq_num
)
288 static uint64_t s390_pci_get_table_origin(uint64_t iota
)
290 return iota
& ~ZPCI_IOTA_RTTO_FLAG
;
293 static unsigned int calc_rtx(dma_addr_t ptr
)
295 return ((unsigned long) ptr
>> ZPCI_RT_SHIFT
) & ZPCI_INDEX_MASK
;
298 static unsigned int calc_sx(dma_addr_t ptr
)
300 return ((unsigned long) ptr
>> ZPCI_ST_SHIFT
) & ZPCI_INDEX_MASK
;
303 static unsigned int calc_px(dma_addr_t ptr
)
305 return ((unsigned long) ptr
>> PAGE_SHIFT
) & ZPCI_PT_MASK
;
308 static uint64_t get_rt_sto(uint64_t entry
)
310 return ((entry
& ZPCI_TABLE_TYPE_MASK
) == ZPCI_TABLE_TYPE_RTX
)
311 ? (entry
& ZPCI_RTE_ADDR_MASK
)
315 static uint64_t get_st_pto(uint64_t entry
)
317 return ((entry
& ZPCI_TABLE_TYPE_MASK
) == ZPCI_TABLE_TYPE_SX
)
318 ? (entry
& ZPCI_STE_ADDR_MASK
)
322 static uint64_t s390_guest_io_table_walk(uint64_t guest_iota
,
323 uint64_t guest_dma_address
)
325 uint64_t sto_a
, pto_a
, px_a
;
326 uint64_t sto
, pto
, pte
;
327 uint32_t rtx
, sx
, px
;
329 rtx
= calc_rtx(guest_dma_address
);
330 sx
= calc_sx(guest_dma_address
);
331 px
= calc_px(guest_dma_address
);
333 sto_a
= guest_iota
+ rtx
* sizeof(uint64_t);
334 sto
= address_space_ldq(&address_space_memory
, sto_a
,
335 MEMTXATTRS_UNSPECIFIED
, NULL
);
336 sto
= get_rt_sto(sto
);
342 pto_a
= sto
+ sx
* sizeof(uint64_t);
343 pto
= address_space_ldq(&address_space_memory
, pto_a
,
344 MEMTXATTRS_UNSPECIFIED
, NULL
);
345 pto
= get_st_pto(pto
);
351 px_a
= pto
+ px
* sizeof(uint64_t);
352 pte
= address_space_ldq(&address_space_memory
, px_a
,
353 MEMTXATTRS_UNSPECIFIED
, NULL
);
359 static IOMMUTLBEntry
s390_translate_iommu(IOMMUMemoryRegion
*mr
, hwaddr addr
,
360 IOMMUAccessFlags flag
)
364 S390PCIIOMMU
*iommu
= container_of(mr
, S390PCIIOMMU
, iommu_mr
);
365 IOMMUTLBEntry ret
= {
366 .target_as
= &address_space_memory
,
368 .translated_addr
= 0,
369 .addr_mask
= ~(hwaddr
)0,
373 switch (iommu
->pbdev
->state
) {
374 case ZPCI_FS_ENABLED
:
375 case ZPCI_FS_BLOCKED
:
376 if (!iommu
->enabled
) {
384 DPRINTF("iommu trans addr 0x%" PRIx64
"\n", addr
);
386 if (addr
< iommu
->pba
|| addr
> iommu
->pal
) {
390 pte
= s390_guest_io_table_walk(s390_pci_get_table_origin(iommu
->g_iota
),
396 flags
= pte
& ZPCI_PTE_FLAG_MASK
;
398 ret
.translated_addr
= pte
& ZPCI_PTE_ADDR_MASK
;
399 ret
.addr_mask
= 0xfff;
401 if (flags
& ZPCI_PTE_INVALID
) {
402 ret
.perm
= IOMMU_NONE
;
410 static const MemoryRegionIOMMUOps s390_iommu_ops
= {
411 .translate
= s390_translate_iommu
,
414 static S390PCIIOMMU
*s390_pci_get_iommu(S390pciState
*s
, PCIBus
*bus
,
417 uint64_t key
= (uintptr_t)bus
;
418 S390PCIIOMMUTable
*table
= g_hash_table_lookup(s
->iommu_table
, &key
);
422 table
= g_malloc0(sizeof(S390PCIIOMMUTable
));
424 g_hash_table_insert(s
->iommu_table
, &table
->key
, table
);
427 iommu
= table
->iommu
[PCI_SLOT(devfn
)];
429 iommu
= S390_PCI_IOMMU(object_new(TYPE_S390_PCI_IOMMU
));
431 char *mr_name
= g_strdup_printf("iommu-root-%02x:%02x.%01x",
435 char *as_name
= g_strdup_printf("iommu-pci-%02x:%02x.%01x",
439 memory_region_init(&iommu
->mr
, OBJECT(iommu
), mr_name
, UINT64_MAX
);
440 address_space_init(&iommu
->as
, &iommu
->mr
, as_name
);
441 table
->iommu
[PCI_SLOT(devfn
)] = iommu
;
450 static AddressSpace
*s390_pci_dma_iommu(PCIBus
*bus
, void *opaque
, int devfn
)
452 S390pciState
*s
= opaque
;
453 S390PCIIOMMU
*iommu
= s390_pci_get_iommu(s
, bus
, devfn
);
458 static uint8_t set_ind_atomic(uint64_t ind_loc
, uint8_t to_be_set
)
460 uint8_t ind_old
, ind_new
;
464 ind_addr
= cpu_physical_memory_map(ind_loc
, &len
, 1);
466 s390_pci_generate_error_event(ERR_EVENT_AIRERR
, 0, 0, 0, 0);
471 ind_new
= ind_old
| to_be_set
;
472 } while (atomic_cmpxchg(ind_addr
, ind_old
, ind_new
) != ind_old
);
473 cpu_physical_memory_unmap(ind_addr
, len
, 1, len
);
478 static void s390_msi_ctrl_write(void *opaque
, hwaddr addr
, uint64_t data
,
481 S390PCIBusDevice
*pbdev
= opaque
;
482 uint32_t idx
= data
>> ZPCI_MSI_VEC_BITS
;
483 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
488 DPRINTF("write_msix data 0x%" PRIx64
" idx %d vec 0x%x\n", data
, idx
, vec
);
491 e
|= (vec
<< ERR_EVENT_MVN_OFFSET
);
492 s390_pci_generate_error_event(ERR_EVENT_NOMSI
, idx
, 0, addr
, e
);
496 if (pbdev
->state
!= ZPCI_FS_ENABLED
) {
500 ind_bit
= pbdev
->routes
.adapter
.ind_offset
;
501 sum_bit
= pbdev
->routes
.adapter
.summary_offset
;
503 set_ind_atomic(pbdev
->routes
.adapter
.ind_addr
+ (ind_bit
+ vec
) / 8,
504 0x80 >> ((ind_bit
+ vec
) % 8));
505 if (!set_ind_atomic(pbdev
->routes
.adapter
.summary_addr
+ sum_bit
/ 8,
506 0x80 >> (sum_bit
% 8))) {
507 css_adapter_interrupt(pbdev
->isc
);
511 static uint64_t s390_msi_ctrl_read(void *opaque
, hwaddr addr
, unsigned size
)
516 static const MemoryRegionOps s390_msi_ctrl_ops
= {
517 .write
= s390_msi_ctrl_write
,
518 .read
= s390_msi_ctrl_read
,
519 .endianness
= DEVICE_LITTLE_ENDIAN
,
522 void s390_pci_iommu_enable(S390PCIIOMMU
*iommu
)
524 char *name
= g_strdup_printf("iommu-s390-%04x", iommu
->pbdev
->uid
);
525 memory_region_init_iommu(&iommu
->iommu_mr
, OBJECT(&iommu
->mr
),
526 &s390_iommu_ops
, name
, iommu
->pal
+ 1);
527 iommu
->enabled
= true;
528 memory_region_add_subregion(&iommu
->mr
, 0, MEMORY_REGION(&iommu
->iommu_mr
));
532 void s390_pci_iommu_disable(S390PCIIOMMU
*iommu
)
534 iommu
->enabled
= false;
535 memory_region_del_subregion(&iommu
->mr
, MEMORY_REGION(&iommu
->iommu_mr
));
536 object_unparent(OBJECT(&iommu
->iommu_mr
));
539 static void s390_pci_iommu_free(S390pciState
*s
, PCIBus
*bus
, int32_t devfn
)
541 uint64_t key
= (uintptr_t)bus
;
542 S390PCIIOMMUTable
*table
= g_hash_table_lookup(s
->iommu_table
, &key
);
543 S390PCIIOMMU
*iommu
= table
? table
->iommu
[PCI_SLOT(devfn
)] : NULL
;
545 if (!table
|| !iommu
) {
549 table
->iommu
[PCI_SLOT(devfn
)] = NULL
;
550 address_space_destroy(&iommu
->as
);
551 object_unparent(OBJECT(&iommu
->mr
));
552 object_unparent(OBJECT(iommu
));
553 object_unref(OBJECT(iommu
));
556 static int s390_pcihost_init(SysBusDevice
*dev
)
560 PCIHostState
*phb
= PCI_HOST_BRIDGE(dev
);
561 S390pciState
*s
= S390_PCI_HOST_BRIDGE(dev
);
563 DPRINTF("host_init\n");
565 b
= pci_register_bus(DEVICE(dev
), NULL
,
566 s390_pci_set_irq
, s390_pci_map_irq
, NULL
,
567 get_system_memory(), get_system_io(), 0, 64,
569 pci_setup_iommu(b
, s390_pci_dma_iommu
, s
);
572 qbus_set_hotplug_handler(bus
, DEVICE(dev
), NULL
);
575 s
->bus
= S390_PCI_BUS(qbus_create(TYPE_S390_PCI_BUS
, DEVICE(s
), NULL
));
576 qbus_set_hotplug_handler(BUS(s
->bus
), DEVICE(s
), NULL
);
578 s
->iommu_table
= g_hash_table_new_full(g_int64_hash
, g_int64_equal
,
580 s
->zpci_table
= g_hash_table_new_full(g_int_hash
, g_int_equal
, NULL
, NULL
);
582 QTAILQ_INIT(&s
->pending_sei
);
583 QTAILQ_INIT(&s
->zpci_devs
);
585 css_register_io_adapters(CSS_IO_ADAPTER_PCI
, true, false, &error_abort
);
590 static int s390_pci_msix_init(S390PCIBusDevice
*pbdev
)
597 pos
= pci_find_capability(pbdev
->pdev
, PCI_CAP_ID_MSIX
);
599 pbdev
->msix
.available
= false;
603 ctrl
= pci_host_config_read_common(pbdev
->pdev
, pos
+ PCI_MSIX_FLAGS
,
604 pci_config_size(pbdev
->pdev
), sizeof(ctrl
));
605 table
= pci_host_config_read_common(pbdev
->pdev
, pos
+ PCI_MSIX_TABLE
,
606 pci_config_size(pbdev
->pdev
), sizeof(table
));
607 pba
= pci_host_config_read_common(pbdev
->pdev
, pos
+ PCI_MSIX_PBA
,
608 pci_config_size(pbdev
->pdev
), sizeof(pba
));
610 pbdev
->msix
.table_bar
= table
& PCI_MSIX_FLAGS_BIRMASK
;
611 pbdev
->msix
.table_offset
= table
& ~PCI_MSIX_FLAGS_BIRMASK
;
612 pbdev
->msix
.pba_bar
= pba
& PCI_MSIX_FLAGS_BIRMASK
;
613 pbdev
->msix
.pba_offset
= pba
& ~PCI_MSIX_FLAGS_BIRMASK
;
614 pbdev
->msix
.entries
= (ctrl
& PCI_MSIX_FLAGS_QSIZE
) + 1;
615 pbdev
->msix
.available
= true;
617 name
= g_strdup_printf("msix-s390-%04x", pbdev
->uid
);
618 memory_region_init_io(&pbdev
->msix_notify_mr
, OBJECT(pbdev
),
619 &s390_msi_ctrl_ops
, pbdev
, name
, PAGE_SIZE
);
620 memory_region_add_subregion(&pbdev
->iommu
->mr
, ZPCI_MSI_ADDR
,
621 &pbdev
->msix_notify_mr
);
627 static void s390_pci_msix_free(S390PCIBusDevice
*pbdev
)
629 memory_region_del_subregion(&pbdev
->iommu
->mr
, &pbdev
->msix_notify_mr
);
630 object_unparent(OBJECT(&pbdev
->msix_notify_mr
));
633 static S390PCIBusDevice
*s390_pci_device_new(S390pciState
*s
,
636 DeviceState
*dev
= NULL
;
638 dev
= qdev_try_create(BUS(s
->bus
), TYPE_S390_PCI_DEVICE
);
643 qdev_prop_set_string(dev
, "target", target
);
644 qdev_init_nofail(dev
);
646 return S390_PCI_DEVICE(dev
);
649 static bool s390_pci_alloc_idx(S390pciState
*s
, S390PCIBusDevice
*pbdev
)
654 while (s390_pci_find_dev_by_idx(s
, idx
)) {
655 idx
= (idx
+ 1) & FH_MASK_INDEX
;
656 if (idx
== s
->next_idx
) {
662 s
->next_idx
= (idx
+ 1) & FH_MASK_INDEX
;
667 static void s390_pcihost_hot_plug(HotplugHandler
*hotplug_dev
,
668 DeviceState
*dev
, Error
**errp
)
670 PCIDevice
*pdev
= NULL
;
671 S390PCIBusDevice
*pbdev
= NULL
;
672 S390pciState
*s
= s390_get_phb();
674 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_BRIDGE
)) {
676 PCIBridge
*pb
= PCI_BRIDGE(dev
);
677 PCIDevice
*pdev
= PCI_DEVICE(dev
);
679 pci_bridge_map_irq(pb
, dev
->id
, s390_pci_map_irq
);
680 pci_setup_iommu(&pb
->sec_bus
, s390_pci_dma_iommu
, s
);
682 bus
= BUS(&pb
->sec_bus
);
683 qbus_set_hotplug_handler(bus
, DEVICE(s
), errp
);
685 if (dev
->hotplugged
) {
686 pci_default_write_config(pdev
, PCI_PRIMARY_BUS
, s
->bus_no
, 1);
688 pci_default_write_config(pdev
, PCI_SECONDARY_BUS
, s
->bus_no
, 1);
690 pdev
= pdev
->bus
->parent_dev
;
691 pci_default_write_config(pdev
, PCI_SUBORDINATE_BUS
,
693 } while (pdev
->bus
&& pci_bus_num(pdev
->bus
));
695 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
696 pdev
= PCI_DEVICE(dev
);
699 /* In the case the PCI device does not define an id */
700 /* we generate one based on the PCI address */
701 dev
->id
= g_strdup_printf("auto_%02x:%02x.%01x",
702 pci_bus_num(pdev
->bus
),
703 PCI_SLOT(pdev
->devfn
),
704 PCI_FUNC(pdev
->devfn
));
707 pbdev
= s390_pci_find_dev_by_target(s
, dev
->id
);
709 pbdev
= s390_pci_device_new(s
, dev
->id
);
711 error_setg(errp
, "create zpci device failed");
716 if (object_dynamic_cast(OBJECT(dev
), "vfio-pci")) {
717 pbdev
->fh
|= FH_SHM_VFIO
;
719 pbdev
->fh
|= FH_SHM_EMUL
;
723 pbdev
->iommu
= s390_pci_get_iommu(s
, pdev
->bus
, pdev
->devfn
);
724 pbdev
->iommu
->pbdev
= pbdev
;
725 pbdev
->state
= ZPCI_FS_STANDBY
;
727 if (s390_pci_msix_init(pbdev
)) {
728 error_setg(errp
, "MSI-X support is mandatory "
729 "in the S390 architecture");
733 if (dev
->hotplugged
) {
734 s390_pci_generate_plug_event(HP_EVENT_RESERVED_TO_STANDBY
,
735 pbdev
->fh
, pbdev
->fid
);
737 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_S390_PCI_DEVICE
)) {
738 pbdev
= S390_PCI_DEVICE(dev
);
740 if (!s390_pci_alloc_idx(s
, pbdev
)) {
741 error_setg(errp
, "no slot for plugging zpci device");
744 pbdev
->fh
= pbdev
->idx
;
745 QTAILQ_INSERT_TAIL(&s
->zpci_devs
, pbdev
, link
);
746 g_hash_table_insert(s
->zpci_table
, &pbdev
->idx
, pbdev
);
750 static void s390_pcihost_timer_cb(void *opaque
)
752 S390PCIBusDevice
*pbdev
= opaque
;
754 if (pbdev
->summary_ind
) {
755 pci_dereg_irqs(pbdev
);
757 if (pbdev
->iommu
->enabled
) {
758 pci_dereg_ioat(pbdev
->iommu
);
761 pbdev
->state
= ZPCI_FS_STANDBY
;
762 s390_pci_generate_plug_event(HP_EVENT_CONFIGURED_TO_STBRES
,
763 pbdev
->fh
, pbdev
->fid
);
764 qdev_unplug(DEVICE(pbdev
), NULL
);
767 static void s390_pcihost_hot_unplug(HotplugHandler
*hotplug_dev
,
768 DeviceState
*dev
, Error
**errp
)
770 PCIDevice
*pci_dev
= NULL
;
773 S390PCIBusDevice
*pbdev
= NULL
;
774 S390pciState
*s
= s390_get_phb();
776 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_BRIDGE
)) {
777 error_setg(errp
, "PCI bridge hot unplug currently not supported");
779 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
780 pci_dev
= PCI_DEVICE(dev
);
782 QTAILQ_FOREACH(pbdev
, &s
->zpci_devs
, link
) {
783 if (pbdev
->pdev
== pci_dev
) {
787 assert(pbdev
!= NULL
);
788 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_S390_PCI_DEVICE
)) {
789 pbdev
= S390_PCI_DEVICE(dev
);
790 pci_dev
= pbdev
->pdev
;
793 switch (pbdev
->state
) {
794 case ZPCI_FS_RESERVED
:
796 case ZPCI_FS_STANDBY
:
799 s390_pci_generate_plug_event(HP_EVENT_DECONFIGURE_REQUEST
,
800 pbdev
->fh
, pbdev
->fid
);
801 pbdev
->release_timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
,
802 s390_pcihost_timer_cb
,
804 timer_mod(pbdev
->release_timer
,
805 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) + HOT_UNPLUG_TIMEOUT
);
809 if (pbdev
->release_timer
&& timer_pending(pbdev
->release_timer
)) {
810 timer_del(pbdev
->release_timer
);
811 timer_free(pbdev
->release_timer
);
812 pbdev
->release_timer
= NULL
;
815 s390_pci_generate_plug_event(HP_EVENT_STANDBY_TO_RESERVED
,
816 pbdev
->fh
, pbdev
->fid
);
818 devfn
= pci_dev
->devfn
;
819 object_unparent(OBJECT(pci_dev
));
820 s390_pci_msix_free(pbdev
);
821 s390_pci_iommu_free(s
, bus
, devfn
);
823 pbdev
->state
= ZPCI_FS_RESERVED
;
826 QTAILQ_REMOVE(&s
->zpci_devs
, pbdev
, link
);
827 g_hash_table_remove(s
->zpci_table
, &pbdev
->idx
);
828 object_unparent(OBJECT(pbdev
));
831 static void s390_pci_enumerate_bridge(PCIBus
*bus
, PCIDevice
*pdev
,
834 S390pciState
*s
= opaque
;
835 unsigned int primary
= s
->bus_no
;
836 unsigned int subordinate
= 0xff;
837 PCIBus
*sec_bus
= NULL
;
839 if ((pci_default_read_config(pdev
, PCI_HEADER_TYPE
, 1) !=
840 PCI_HEADER_TYPE_BRIDGE
)) {
845 pci_default_write_config(pdev
, PCI_PRIMARY_BUS
, primary
, 1);
846 pci_default_write_config(pdev
, PCI_SECONDARY_BUS
, s
->bus_no
, 1);
847 pci_default_write_config(pdev
, PCI_SUBORDINATE_BUS
, s
->bus_no
, 1);
849 sec_bus
= pci_bridge_get_sec_bus(PCI_BRIDGE(pdev
));
854 pci_default_write_config(pdev
, PCI_SUBORDINATE_BUS
, subordinate
, 1);
855 pci_for_each_device(sec_bus
, pci_bus_num(sec_bus
),
856 s390_pci_enumerate_bridge
, s
);
857 pci_default_write_config(pdev
, PCI_SUBORDINATE_BUS
, s
->bus_no
, 1);
860 static void s390_pcihost_reset(DeviceState
*dev
)
862 S390pciState
*s
= S390_PCI_HOST_BRIDGE(dev
);
863 PCIBus
*bus
= s
->parent_obj
.bus
;
866 pci_for_each_device(bus
, pci_bus_num(bus
), s390_pci_enumerate_bridge
, s
);
869 static void s390_pcihost_class_init(ObjectClass
*klass
, void *data
)
871 SysBusDeviceClass
*k
= SYS_BUS_DEVICE_CLASS(klass
);
872 DeviceClass
*dc
= DEVICE_CLASS(klass
);
873 HotplugHandlerClass
*hc
= HOTPLUG_HANDLER_CLASS(klass
);
875 dc
->reset
= s390_pcihost_reset
;
876 k
->init
= s390_pcihost_init
;
877 hc
->plug
= s390_pcihost_hot_plug
;
878 hc
->unplug
= s390_pcihost_hot_unplug
;
879 msi_nonbroken
= true;
882 static const TypeInfo s390_pcihost_info
= {
883 .name
= TYPE_S390_PCI_HOST_BRIDGE
,
884 .parent
= TYPE_PCI_HOST_BRIDGE
,
885 .instance_size
= sizeof(S390pciState
),
886 .class_init
= s390_pcihost_class_init
,
887 .interfaces
= (InterfaceInfo
[]) {
888 { TYPE_HOTPLUG_HANDLER
},
893 static const TypeInfo s390_pcibus_info
= {
894 .name
= TYPE_S390_PCI_BUS
,
896 .instance_size
= sizeof(S390PCIBus
),
899 static uint16_t s390_pci_generate_uid(S390pciState
*s
)
905 if (!s390_pci_find_dev_by_uid(s
, uid
)) {
908 } while (uid
< ZPCI_MAX_UID
);
910 return UID_UNDEFINED
;
913 static uint32_t s390_pci_generate_fid(S390pciState
*s
, Error
**errp
)
918 if (!s390_pci_find_dev_by_fid(s
, fid
)) {
921 } while (fid
++ != ZPCI_MAX_FID
);
923 error_setg(errp
, "no free fid could be found");
927 static void s390_pci_device_realize(DeviceState
*dev
, Error
**errp
)
929 S390PCIBusDevice
*zpci
= S390_PCI_DEVICE(dev
);
930 S390pciState
*s
= s390_get_phb();
933 error_setg(errp
, "target must be defined");
937 if (s390_pci_find_dev_by_target(s
, zpci
->target
)) {
938 error_setg(errp
, "target %s already has an associated zpci device",
943 if (zpci
->uid
== UID_UNDEFINED
) {
944 zpci
->uid
= s390_pci_generate_uid(s
);
946 error_setg(errp
, "no free uid could be found");
949 } else if (s390_pci_find_dev_by_uid(s
, zpci
->uid
)) {
950 error_setg(errp
, "uid %u already in use", zpci
->uid
);
954 if (!zpci
->fid_defined
) {
955 Error
*local_error
= NULL
;
957 zpci
->fid
= s390_pci_generate_fid(s
, &local_error
);
959 error_propagate(errp
, local_error
);
962 } else if (s390_pci_find_dev_by_fid(s
, zpci
->fid
)) {
963 error_setg(errp
, "fid %u already in use", zpci
->fid
);
967 zpci
->state
= ZPCI_FS_RESERVED
;
970 static void s390_pci_device_reset(DeviceState
*dev
)
972 S390PCIBusDevice
*pbdev
= S390_PCI_DEVICE(dev
);
974 switch (pbdev
->state
) {
975 case ZPCI_FS_RESERVED
:
977 case ZPCI_FS_STANDBY
:
980 pbdev
->fh
&= ~FH_MASK_ENABLE
;
981 pbdev
->state
= ZPCI_FS_DISABLED
;
985 if (pbdev
->summary_ind
) {
986 pci_dereg_irqs(pbdev
);
988 if (pbdev
->iommu
->enabled
) {
989 pci_dereg_ioat(pbdev
->iommu
);
995 static void s390_pci_get_fid(Object
*obj
, Visitor
*v
, const char *name
,
996 void *opaque
, Error
**errp
)
998 Property
*prop
= opaque
;
999 uint32_t *ptr
= qdev_get_prop_ptr(DEVICE(obj
), prop
);
1001 visit_type_uint32(v
, name
, ptr
, errp
);
1004 static void s390_pci_set_fid(Object
*obj
, Visitor
*v
, const char *name
,
1005 void *opaque
, Error
**errp
)
1007 DeviceState
*dev
= DEVICE(obj
);
1008 S390PCIBusDevice
*zpci
= S390_PCI_DEVICE(obj
);
1009 Property
*prop
= opaque
;
1010 uint32_t *ptr
= qdev_get_prop_ptr(dev
, prop
);
1012 if (dev
->realized
) {
1013 qdev_prop_set_after_realize(dev
, name
, errp
);
1017 visit_type_uint32(v
, name
, ptr
, errp
);
1018 zpci
->fid_defined
= true;
1021 static PropertyInfo s390_pci_fid_propinfo
= {
1023 .get
= s390_pci_get_fid
,
1024 .set
= s390_pci_set_fid
,
1027 #define DEFINE_PROP_S390_PCI_FID(_n, _s, _f) \
1028 DEFINE_PROP(_n, _s, _f, s390_pci_fid_propinfo, uint32_t)
1030 static Property s390_pci_device_properties
[] = {
1031 DEFINE_PROP_UINT16("uid", S390PCIBusDevice
, uid
, UID_UNDEFINED
),
1032 DEFINE_PROP_S390_PCI_FID("fid", S390PCIBusDevice
, fid
),
1033 DEFINE_PROP_STRING("target", S390PCIBusDevice
, target
),
1034 DEFINE_PROP_END_OF_LIST(),
1037 static void s390_pci_device_class_init(ObjectClass
*klass
, void *data
)
1039 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1041 dc
->desc
= "zpci device";
1042 dc
->reset
= s390_pci_device_reset
;
1043 dc
->bus_type
= TYPE_S390_PCI_BUS
;
1044 dc
->realize
= s390_pci_device_realize
;
1045 dc
->props
= s390_pci_device_properties
;
1048 static const TypeInfo s390_pci_device_info
= {
1049 .name
= TYPE_S390_PCI_DEVICE
,
1050 .parent
= TYPE_DEVICE
,
1051 .instance_size
= sizeof(S390PCIBusDevice
),
1052 .class_init
= s390_pci_device_class_init
,
1055 static TypeInfo s390_pci_iommu_info
= {
1056 .name
= TYPE_S390_PCI_IOMMU
,
1057 .parent
= TYPE_OBJECT
,
1058 .instance_size
= sizeof(S390PCIIOMMU
),
1061 static void s390_pci_register_types(void)
1063 type_register_static(&s390_pcihost_info
);
1064 type_register_static(&s390_pcibus_info
);
1065 type_register_static(&s390_pci_device_info
);
1066 type_register_static(&s390_pci_iommu_info
);
1069 type_init(s390_pci_register_types
)