pci: move acpi-index uniqueness check to generic PCI device code

acpi-index is now working with non-hotpluggable buses
(pci/q35 machine hostbridge), it can be used even if
ACPI PCI hotplug is disabled and as result acpi-index
uniqueness check will be omitted (since the check is
done by ACPI PCI hotplug handler, which isn't wired
when ACPI PCI hotplug is disabled).
Move check and related code to generic PCIDevice so it
would be independent of ACPI PCI hotplug.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20230302161543.286002-30-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 0 insertions, 56 deletions

diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index 5dc7377..adf45e8 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -54,21 +54,6 @@ typedef struct AcpiPciHpFind {
     PCIBus *bus;
 } AcpiPciHpFind;
 
-static gint g_cmp_uint32(gconstpointer a, gconstpointer b, gpointer user_data)
-{
-    return a - b;
-}
-
-static GSequence *pci_acpi_index_list(void)
-{
-    static GSequence *used_acpi_index_list;
-
-    if (!used_acpi_index_list) {
-        used_acpi_index_list = g_sequence_new(NULL);
-    }
-    return used_acpi_index_list;
-}
-
 static int acpi_pcihp_get_bsel(PCIBus *bus)
 {
     Error *local_err = NULL;
@@ -300,8 +285,6 @@ void acpi_pcihp_reset(AcpiPciHpState *s, bool acpihp_root_off)
     acpi_pcihp_update(s);
 }
 
-#define ONBOARD_INDEX_MAX (16 * 1024 - 1)
-
 void acpi_pcihp_device_pre_plug_cb(HotplugHandler *hotplug_dev,
                                    DeviceState *dev, Error **errp)
 {
@@ -314,34 +297,6 @@ void acpi_pcihp_device_pre_plug_cb(HotplugHandler *hotplug_dev,
                    ACPI_PCIHP_PROP_BSEL "' set");
         return;
     }
-
-    /*
-     * capped by systemd (see: udev-builtin-net_id.c)
-     * as it's the only known user honor it to avoid users
-     * misconfigure QEMU and then wonder why acpi-index doesn't work
-     */
-    if (pdev->acpi_index > ONBOARD_INDEX_MAX) {
-        error_setg(errp, "acpi-index should be less or equal to %u",
-                   ONBOARD_INDEX_MAX);
-        return;
-    }
-
-    /*
-     * make sure that acpi-index is unique across all present PCI devices
-     */
-    if (pdev->acpi_index) {
-        GSequence *used_indexes = pci_acpi_index_list();
-
-        if (g_sequence_lookup(used_indexes, GINT_TO_POINTER(pdev->acpi_index),
-                              g_cmp_uint32, NULL)) {
-            error_setg(errp, "a PCI device with acpi-index = %" PRIu32
-                       " already exist", pdev->acpi_index);
-            return;
-        }
-        g_sequence_insert_sorted(used_indexes,
-                                 GINT_TO_POINTER(pdev->acpi_index),
-                                 g_cmp_uint32, NULL);
-    }
 }
 
 void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
@@ -401,17 +356,6 @@ void acpi_pcihp_device_unplug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
     trace_acpi_pci_unplug(PCI_SLOT(pdev->devfn),
                           acpi_pcihp_get_bsel(pci_get_bus(pdev)));
 
-    /*
-     * clean up acpi-index so it could reused by another device
-     */
-    if (pdev->acpi_index) {
-        GSequence *used_indexes = pci_acpi_index_list();
-
-        g_sequence_remove(g_sequence_lookup(used_indexes,
-                          GINT_TO_POINTER(pdev->acpi_index),
-                          g_cmp_uint32, NULL));
-    }
-
     qdev_unrealize(dev);
 }