Merge tag 'pull-request-2024-01-19' of https://gitlab.com/thuth/qemu into staging

[mirror_qemu.git] / hw / s390x / s390-pci-bus.c

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 2f199739130b8d40a5c66848b84b3c710d5ba227..3e57d5faca18dec46f947fa30d5f69efb6c2620c 100644 (file)
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -24,17 +24,10 @@
 #include "hw/pci/msi.h"
 #include "qemu/error-report.h"
 #include "qemu/module.h"
+#include "sysemu/reset.h"
+#include "sysemu/runstate.h"
 
-#ifndef DEBUG_S390PCI_BUS
-#define DEBUG_S390PCI_BUS  0
-#endif
-
-#define DPRINTF(fmt, ...)                                         \
-    do {                                                          \
-        if (DEBUG_S390PCI_BUS) {                                  \
-            fprintf(stderr, "S390pci-bus: " fmt, ## __VA_ARGS__); \
-        }                                                         \
-    } while (0)
+#include "trace.h"
 
 S390pciState *s390_get_phb(void)
 {
@@ -130,7 +123,7 @@ void s390_pci_sclp_configure(SCCB *sccb)
     uint16_t rc;
 
     if (!pbdev) {
-        DPRINTF("sclp config no dev found\n");
+        trace_s390_pci_sclp_nodev("configure", be32_to_cpu(psccb->aid));
         rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED;
         goto out;
     }
@@ -150,10 +143,22 @@ out:
     psccb->header.response_code = cpu_to_be16(rc);
 }
 
+static void s390_pci_shutdown_notifier(Notifier *n, void *opaque)
+{
+    S390PCIBusDevice *pbdev = container_of(n, S390PCIBusDevice,
+                                           shutdown_notifier);
+
+    pci_device_reset(pbdev->pdev);
+}
+
 static void s390_pci_perform_unplug(S390PCIBusDevice *pbdev)
 {
     HotplugHandler *hotplug_ctrl;
 
+    if (pbdev->pft == ZPCI_PFT_ISM) {
+        notifier_remove(&pbdev->shutdown_notifier);
+    }
+
     /* Unplug the PCI device */
     if (pbdev->pdev) {
         DeviceState *pdev = DEVICE(pbdev->pdev);
@@ -177,7 +182,7 @@ void s390_pci_sclp_deconfigure(SCCB *sccb)
     uint16_t rc;
 
     if (!pbdev) {
-        DPRINTF("sclp deconfig no dev found\n");
+        trace_s390_pci_sclp_nodev("deconfigure", be32_to_cpu(psccb->aid));
         rc = SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED;
         goto out;
     }
@@ -551,7 +556,7 @@ static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr,
         return ret;
     }
 
-    DPRINTF("iommu trans addr 0x%" PRIx64 "\n", addr);
+    trace_s390_pci_iommu_xlate(addr);
 
     if (addr < iommu->pba || addr > iommu->pal) {
         error = ERR_EVENT_OORANGE;
@@ -639,6 +644,10 @@ static AddressSpace *s390_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
     return &iommu->as;
 }
 
+static const PCIIOMMUOps s390_iommu_ops = {
+    .get_address_space = s390_pci_dma_iommu,
+};
+
 static uint8_t set_ind_atomic(uint64_t ind_loc, uint8_t to_be_set)
 {
     uint8_t expected, actual;
@@ -670,8 +679,8 @@ static void s390_msi_ctrl_write(void *opaque, hwaddr addr, uint64_t data,
     uint32_t sum_bit;
 
     assert(pbdev);
-    DPRINTF("write_msix data 0x%" PRIx64 " idx %d vec 0x%x\n", data,
-            pbdev->idx, vec);
+
+    trace_s390_pci_msi_ctrl_write(data, pbdev->idx, vec);
 
     if (pbdev->state != ZPCI_FS_ENABLED) {
         return;
@@ -748,13 +757,14 @@ static void s390_pci_iommu_free(S390pciState *s, PCIBus *bus, int32_t devfn)
     object_unref(OBJECT(iommu));
 }
 
-S390PCIGroup *s390_group_create(int id)
+S390PCIGroup *s390_group_create(int id, int host_id)
 {
     S390PCIGroup *group;
     S390pciState *s = s390_get_phb();
 
     group = g_new0(S390PCIGroup, 1);
     group->id = id;
+    group->host_id = host_id;
     QTAILQ_INSERT_TAIL(&s->zpci_groups, group, link);
     return group;
 }
@@ -772,12 +782,25 @@ S390PCIGroup *s390_group_find(int id)
     return NULL;
 }
 
+S390PCIGroup *s390_group_find_host_sim(int host_id)
+{
+    S390PCIGroup *group;
+    S390pciState *s = s390_get_phb();
+
+    QTAILQ_FOREACH(group, &s->zpci_groups, link) {
+        if (group->id >= ZPCI_SIM_GRP_START && group->host_id == host_id) {
+            return group;
+        }
+    }
+    return NULL;
+}
+
 static void s390_pci_init_default_group(void)
 {
     S390PCIGroup *group;
     ClpRspQueryPciGrp *resgrp;
 
-    group = s390_group_create(ZPCI_DEFAULT_FN_GRP);
+    group = s390_group_create(ZPCI_DEFAULT_FN_GRP, ZPCI_DEFAULT_FN_GRP);
     resgrp = &group->zpci_group;
     resgrp->fr = 1;
     resgrp->dasm = 0;
@@ -807,12 +830,12 @@ static void s390_pcihost_realize(DeviceState *dev, Error **errp)
     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
     S390pciState *s = S390_PCI_HOST_BRIDGE(dev);
 
-    DPRINTF("host_init\n");
+    trace_s390_pcihost("realize");
 
     b = pci_register_root_bus(dev, NULL, s390_pci_set_irq, s390_pci_map_irq,
                               NULL, get_system_memory(), get_system_io(), 0,
                               64, TYPE_PCI_BUS);
-    pci_setup_iommu(b, s390_pci_dma_iommu, s);
+    pci_setup_iommu(b, &s390_iommu_ops, s);
 
     bus = BUS(b);
     qbus_set_hotplug_handler(bus, OBJECT(dev));
@@ -825,6 +848,7 @@ static void s390_pcihost_realize(DeviceState *dev, Error **errp)
                                            NULL, g_free);
     s->zpci_table = g_hash_table_new_full(g_int_hash, g_int_equal, NULL, NULL);
     s->bus_no = 0;
+    s->next_sim_grp = ZPCI_SIM_GRP_START;
     QTAILQ_INIT(&s->pending_sei);
     QTAILQ_INIT(&s->zpci_devs);
     QTAILQ_INIT(&s->zpci_dma_limit);
@@ -1030,7 +1054,7 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
 
         pdev = PCI_DEVICE(dev);
         pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq);
-        pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s);
+        pci_setup_iommu(&pb->sec_bus, &s390_iommu_ops, s);
 
         qbus_set_hotplug_handler(BUS(&pb->sec_bus), OBJECT(s));
 
@@ -1083,7 +1107,7 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
                         return;
                     }
                 } else {
-                    DPRINTF("zPCI interpretation facilities missing.\n");
+                    trace_s390_pcihost("zPCI interpretation missing");
                     pbdev->interp = false;
                     pbdev->forwarding_assist = false;
                 }
@@ -1096,6 +1120,11 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
                 pbdev->fh |= FH_SHM_VFIO;
                 pbdev->forwarding_assist = false;
             }
+            /* Register shutdown notifier and reset callback for ISM devices */
+            if (pbdev->pft == ZPCI_PFT_ISM) {
+                pbdev->shutdown_notifier.notify = s390_pci_shutdown_notifier;
+                qemu_register_shutdown_notifier(&pbdev->shutdown_notifier);
+            }
         } else {
             pbdev->fh |= FH_SHM_EMUL;
             /* Always intercept emulated devices */
@@ -1241,6 +1270,23 @@ static void s390_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev,
     pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1);
 }
 
+void s390_pci_ism_reset(void)
+{
+    S390pciState *s = s390_get_phb();
+
+    S390PCIBusDevice *pbdev, *next;
+
+    /* Trigger reset event for each passthrough ISM device currently in-use */
+    QTAILQ_FOREACH_SAFE(pbdev, &s->zpci_devs, link, next) {
+        if (pbdev->interp && pbdev->pft == ZPCI_PFT_ISM &&
+            pbdev->fh & FH_MASK_ENABLE) {
+            s390_pci_kvm_aif_disable(pbdev);
+
+            pci_device_reset(pbdev->pdev);
+        }
+    }
+}
+
 static void s390_pcihost_reset(DeviceState *dev)
 {
     S390pciState *s = S390_PCI_HOST_BRIDGE(dev);