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-rw-r--r--hw/s390x/s390-pci-bus.c100
-rw-r--r--hw/s390x/s390-pci-bus.h7
2 files changed, 56 insertions, 51 deletions
diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index f3afb17..7ba1ae8 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -93,33 +93,24 @@ int chsc_sei_nt2_have_event(void)
S390PCIBusDevice *s390_pci_find_next_avail_dev(S390PCIBusDevice *pbdev)
{
- int idx = 0;
- S390PCIBusDevice *dev = NULL;
S390pciState *s = s390_get_phb();
+ S390PCIBusDevice *ret = pbdev ? QTAILQ_NEXT(pbdev, link) :
+ QTAILQ_FIRST(&s->zpci_devs);
- if (pbdev) {
- idx = (pbdev->fh & FH_MASK_INDEX) + 1;
+ while (ret && ret->state == ZPCI_FS_RESERVED) {
+ ret = QTAILQ_NEXT(ret, link);
}
- for (; idx < PCI_SLOT_MAX; idx++) {
- dev = s->pbdev[idx];
- if (dev && dev->state != ZPCI_FS_RESERVED) {
- return dev;
- }
- }
-
- return NULL;
+ return ret;
}
S390PCIBusDevice *s390_pci_find_dev_by_fid(uint32_t fid)
{
S390PCIBusDevice *pbdev;
- int i;
S390pciState *s = s390_get_phb();
- for (i = 0; i < PCI_SLOT_MAX; i++) {
- pbdev = s->pbdev[i];
- if (pbdev && pbdev->fid == fid) {
+ QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
+ if (pbdev->fid == fid) {
return pbdev;
}
}
@@ -203,16 +194,10 @@ out:
static S390PCIBusDevice *s390_pci_find_dev_by_uid(uint16_t uid)
{
- int i;
S390PCIBusDevice *pbdev;
S390pciState *s = s390_get_phb();
- for (i = 0; i < PCI_SLOT_MAX; i++) {
- pbdev = s->pbdev[i];
- if (!pbdev) {
- continue;
- }
-
+ QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
if (pbdev->uid == uid) {
return pbdev;
}
@@ -223,7 +208,6 @@ static S390PCIBusDevice *s390_pci_find_dev_by_uid(uint16_t uid)
static S390PCIBusDevice *s390_pci_find_dev_by_target(const char *target)
{
- int i;
S390PCIBusDevice *pbdev;
S390pciState *s = s390_get_phb();
@@ -231,12 +215,7 @@ static S390PCIBusDevice *s390_pci_find_dev_by_target(const char *target)
return NULL;
}
- for (i = 0; i < PCI_SLOT_MAX; i++) {
- pbdev = s->pbdev[i];
- if (!pbdev) {
- continue;
- }
-
+ QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
if (!strcmp(pbdev->target, target)) {
return pbdev;
}
@@ -247,9 +226,16 @@ static S390PCIBusDevice *s390_pci_find_dev_by_target(const char *target)
S390PCIBusDevice *s390_pci_find_dev_by_idx(uint32_t idx)
{
+ S390PCIBusDevice *pbdev;
S390pciState *s = s390_get_phb();
- return s->pbdev[idx & FH_MASK_INDEX];
+ QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
+ if (pbdev->idx == idx) {
+ return pbdev;
+ }
+ }
+
+ return NULL;
}
S390PCIBusDevice *s390_pci_find_dev_by_fh(uint32_t fh)
@@ -257,9 +243,10 @@ S390PCIBusDevice *s390_pci_find_dev_by_fh(uint32_t fh)
S390pciState *s = s390_get_phb();
S390PCIBusDevice *pbdev;
- pbdev = s->pbdev[fh & FH_MASK_INDEX];
- if (pbdev && pbdev->fh == fh) {
- return pbdev;
+ QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
+ if (pbdev->fh == fh) {
+ return pbdev;
+ }
}
return NULL;
@@ -599,6 +586,7 @@ static int s390_pcihost_init(SysBusDevice *dev)
s->iommu_table = g_hash_table_new_full(g_int64_hash, g_int64_equal,
NULL, g_free);
QTAILQ_INIT(&s->pending_sei);
+ QTAILQ_INIT(&s->zpci_devs);
return 0;
}
@@ -666,6 +654,25 @@ static S390PCIBusDevice *s390_pci_device_new(const char *target)
return S390_PCI_DEVICE(dev);
}
+static bool s390_pci_alloc_idx(S390PCIBusDevice *pbdev)
+{
+ uint32_t idx;
+ S390pciState *s = s390_get_phb();
+
+ idx = s->next_idx;
+ while (s390_pci_find_dev_by_idx(idx)) {
+ idx = (idx + 1) & FH_MASK_INDEX;
+ if (idx == s->next_idx) {
+ return false;
+ }
+ }
+
+ pbdev->idx = idx;
+ s->next_idx = (idx + 1) & FH_MASK_INDEX;
+
+ return true;
+}
+
static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
@@ -713,18 +720,14 @@ static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev,
pbdev->fh, pbdev->fid);
}
} else if (object_dynamic_cast(OBJECT(dev), TYPE_S390_PCI_DEVICE)) {
- int idx;
-
pbdev = S390_PCI_DEVICE(dev);
- for (idx = 0; idx < PCI_SLOT_MAX; idx++) {
- if (!s->pbdev[idx]) {
- s->pbdev[idx] = pbdev;
- pbdev->fh = idx;
- return;
- }
- }
- error_setg(errp, "no slot for plugging zpci device");
+ if (!s390_pci_alloc_idx(pbdev)) {
+ error_setg(errp, "no slot for plugging zpci device");
+ return;
+ }
+ pbdev->fh = pbdev->idx;
+ QTAILQ_INSERT_TAIL(&s->zpci_devs, pbdev, link);
}
}
@@ -750,16 +753,15 @@ static void s390_pcihost_hot_unplug(HotplugHandler *hotplug_dev,
{
PCIDevice *pci_dev = NULL;
PCIBus *bus;
- int32_t devfn, i;
+ int32_t devfn;
S390PCIBusDevice *pbdev = NULL;
S390pciState *s = s390_get_phb();
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
pci_dev = PCI_DEVICE(dev);
- for (i = 0 ; i < PCI_SLOT_MAX; i++) {
- if (s->pbdev[i] && s->pbdev[i]->pdev == pci_dev) {
- pbdev = s->pbdev[i];
+ QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {
+ if (pbdev->pdev == pci_dev) {
break;
}
}
@@ -802,7 +804,7 @@ static void s390_pcihost_hot_unplug(HotplugHandler *hotplug_dev,
pbdev->state = ZPCI_FS_RESERVED;
out:
pbdev->fid = 0;
- s->pbdev[pbdev->fh & FH_MASK_INDEX] = NULL;
+ QTAILQ_REMOVE(&s->zpci_devs, pbdev, link);
object_unparent(OBJECT(pbdev));
}
diff --git a/hw/s390x/s390-pci-bus.h b/hw/s390x/s390-pci-bus.h
index fe108e9..1bd37ad 100644
--- a/hw/s390x/s390-pci-bus.h
+++ b/hw/s390x/s390-pci-bus.h
@@ -27,7 +27,7 @@
#define FH_MASK_ENABLE 0x80000000
#define FH_MASK_INSTANCE 0x7f000000
#define FH_MASK_SHM 0x00ff0000
-#define FH_MASK_INDEX 0x0000001f
+#define FH_MASK_INDEX 0x0000ffff
#define FH_SHM_VFIO 0x00010000
#define FH_SHM_EMUL 0x00020000
#define S390_PCIPT_ADAPTER 2
@@ -285,6 +285,7 @@ typedef struct S390PCIBusDevice {
ZpciState state;
char *target;
uint16_t uid;
+ uint32_t idx;
uint32_t fh;
uint32_t fid;
bool fid_defined;
@@ -299,6 +300,7 @@ typedef struct S390PCIBusDevice {
IndAddr *summary_ind;
IndAddr *indicator;
QEMUTimer *release_timer;
+ QTAILQ_ENTRY(S390PCIBusDevice) link;
} S390PCIBusDevice;
typedef struct S390PCIBus {
@@ -307,10 +309,11 @@ typedef struct S390PCIBus {
typedef struct S390pciState {
PCIHostState parent_obj;
+ uint32_t next_idx;
S390PCIBus *bus;
- S390PCIBusDevice *pbdev[PCI_SLOT_MAX];
GHashTable *iommu_table;
QTAILQ_HEAD(, SeiContainer) pending_sei;
+ QTAILQ_HEAD(, S390PCIBusDevice) zpci_devs;
} S390pciState;
int chsc_sei_nt2_get_event(void *res);
generated by cgit v1.1 at 2024-12-26 04:39:20 +0000