pci: avoid accessing slot_reserved_mask directly outside of pci.c

This patch provides accessor functions as replacements for direct
access to slot_reserved_mask according to the comment at the top
of include/hw/pci/pci_bus.h which advises that data structures for
PCIBus should not be directly accessed but instead be accessed using
accessor functions in pci.h.

Three accessor functions can conveniently replace all direct accesses
of slot_reserved_mask. With this patch, the new accessor functions are
used in hw/sparc64/sun4u.c and hw/xen/xen_pt.c and pci_bus.h is removed
from the included header files of the same two files.

No functional change intended.

Signed-off-by: Chuck Zmudzinski <brchuckz@aol.com>
Message-Id: <b1b7f134883cbc83e455abbe5ee225c71aa0e8d0.1678888385.git.brchuckz@aol.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> [sun4u]

1 files changed, 15 insertions, 0 deletions

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index def5000e7b..8a87ccc8b0 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1116,6 +1116,21 @@ static bool pci_bus_devfn_reserved(PCIBus *bus, int devfn)
     return bus->slot_reserved_mask & (1UL << PCI_SLOT(devfn));
 }
 
+uint32_t pci_bus_get_slot_reserved_mask(PCIBus *bus)
+{
+    return bus->slot_reserved_mask;
+}
+
+void pci_bus_set_slot_reserved_mask(PCIBus *bus, uint32_t mask)
+{
+    bus->slot_reserved_mask |= mask;
+}
+
+void pci_bus_clear_slot_reserved_mask(PCIBus *bus, uint32_t mask)
+{
+    bus->slot_reserved_mask &= ~mask;
+}
+
 /* -1 for devfn means auto assign */
 static PCIDevice *do_pci_register_device(PCIDevice *pci_dev,
                                          const char *name, int devfn,