Merge tag 'hw-misc-20241214' of https://github.com/philmd/qemu into staging

Misc HW patch queue

- Support string data for extendPCR in VirtIO NSM device (Dorjoy)
- Have PCI_BUS implement TYPE_FW_CFG_DATA_GENERATOR_INTERFACE (Phil)
- Decouple AHCI from PCI (Bernhard)
- Add status to usb_msd_packet_complete (Nick)
- Header cleanups (Alex, Phil)

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# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* tag 'hw-misc-20241214' of https://github.com/philmd/qemu:
  hw/xtensa: Include missing 'exec/tswap.h' header
  hw/sh4/r2d: Include missing 'exec/tswap.h' header
  hw/mips: Include missing 'exec/tswap.h' header
  hw/ide/ahci: Extract TYPE_SYSBUS_AHCI into dedicated file
  hw/ide/ahci: Decouple from PCI
  hw/usb/hcd-xhci-pci: Indentation fix
  hw/usb/hcd-xhci-nec: Remove unused XHCINecState::flags field
  hw/usb/msd: Add status to usb_msd_packet_complete() function
  hw/net/can: clean-up unnecessary includes
  hw/nvram/fw_cfg: Remove fw_cfg_add_extra_pci_roots()
  hw: Use pci_bus_add_fw_cfg_extra_pci_roots()
  hw/pci: Add pci_bus_add_fw_cfg_extra_pci_roots() helper
  hw/pci: Have PCI_BUS implement TYPE_FW_CFG_DATA_GENERATOR_INTERFACE
  hw/nvram/fw_cfg: Skip FW_CFG_DATA_GENERATOR when no data to generate
  hw/nvram/fw_cfg: Pass QOM parent to fw_cfg_add_file_from_generator()
  hw/nvram/fw_cfg: Rename fw_cfg_add_[file]_from_generator()
  hw/riscv/virt: Remove pointless GPEX_HOST() cast
  hw/virtio/virtio-nsm: Support string data for extendPCR
  hw/core/eif: Use stateful qcrypto apis
  docs/nitro-enclave: Fix terminal commands formatting

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 1416ae202c..bf0a1840db 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -46,6 +46,7 @@
 #include "hw/pci/msix.h"
 #include "hw/hotplug.h"
 #include "hw/boards.h"
+#include "hw/nvram/fw_cfg.h"
 #include "qapi/error.h"
 #include "qemu/cutils.h"
 #include "pci-internal.h"
@@ -216,11 +217,57 @@ static uint16_t pcibus_numa_node(PCIBus *bus)
     return NUMA_NODE_UNASSIGNED;
 }
 
+bool pci_bus_add_fw_cfg_extra_pci_roots(FWCfgState *fw_cfg,
+                                        PCIBus *bus,
+                                        Error **errp)
+{
+    Object *obj;
+
+    if (!bus) {
+        return true;
+    }
+    obj = OBJECT(bus);
+
+    return fw_cfg_add_file_from_generator(fw_cfg, obj->parent,
+                                          object_get_canonical_path_component(obj),
+                                          "etc/extra-pci-roots", errp);
+}
+
+static GByteArray *pci_bus_fw_cfg_gen_data(Object *obj, Error **errp)
+{
+    PCIBus *bus = PCI_BUS(obj);
+    GByteArray *byte_array;
+    uint64_t extra_hosts = 0;
+
+    if (!bus) {
+        return NULL;
+    }
+
+    QLIST_FOREACH(bus, &bus->child, sibling) {
+        /* look for expander root buses */
+        if (pci_bus_is_root(bus)) {
+            extra_hosts++;
+        }
+    }
+
+    if (!extra_hosts) {
+        return NULL;
+    }
+    extra_hosts = cpu_to_le64(extra_hosts);
+
+    byte_array = g_byte_array_new();
+    g_byte_array_append(byte_array,
+                        (const void *)&extra_hosts, sizeof(extra_hosts));
+
+    return byte_array;
+}
+
 static void pci_bus_class_init(ObjectClass *klass, void *data)
 {
     BusClass *k = BUS_CLASS(klass);
     PCIBusClass *pbc = PCI_BUS_CLASS(klass);
     ResettableClass *rc = RESETTABLE_CLASS(klass);
+    FWCfgDataGeneratorClass *fwgc = FW_CFG_DATA_GENERATOR_CLASS(klass);
 
     k->print_dev = pcibus_dev_print;
     k->get_dev_path = pcibus_get_dev_path;
@@ -232,6 +279,8 @@ static void pci_bus_class_init(ObjectClass *klass, void *data)
 
     pbc->bus_num = pcibus_num;
     pbc->numa_node = pcibus_numa_node;
+
+    fwgc->get_data = pci_bus_fw_cfg_gen_data;
 }
 
 static const TypeInfo pci_bus_info = {
@@ -240,6 +289,10 @@ static const TypeInfo pci_bus_info = {
     .instance_size = sizeof(PCIBus),
     .class_size = sizeof(PCIBusClass),
     .class_init = pci_bus_class_init,
+    .interfaces = (InterfaceInfo[]) {
+        { TYPE_FW_CFG_DATA_GENERATOR_INTERFACE },
+        { }
+    }
 };
 
 static const TypeInfo cxl_interface_info = {