hw/pci: factor PCI reserve resources to a separate structure

Factor "bus_reserve", "io_reserve", "mem_reserve", "pref32_reserve"
and "pref64_reserve" fields of the "GenPCIERootPort" structure out
to "PCIResReserve" structure, so that other PCI bridges can
reuse it to add resource reserve capability.

Signed-off-by: Jing Liu <jing2.liu@linux.intel.com>
Reviewed-by: Marcel Apfelbaum<marcel.apfelbaum@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 17 insertions, 16 deletions

diff --git a/hw/pci-bridge/gen_pcie_root_port.c b/hw/pci-bridge/gen_pcie_root_port.c
index d117e20325..299de429ec 100644
--- a/hw/pci-bridge/gen_pcie_root_port.c
+++ b/hw/pci-bridge/gen_pcie_root_port.c
@@ -29,12 +29,8 @@ typedef struct GenPCIERootPort {
 
     bool migrate_msix;
 
-    /* additional resources to reserve on firmware init */
-    uint32_t bus_reserve;
-    uint64_t io_reserve;
-    uint64_t mem_reserve;
-    uint64_t pref32_reserve;
-    uint64_t pref64_reserve;
+    /* additional resources to reserve */
+    PCIResReserve res_reserve;
 } GenPCIERootPort;
 
 static uint8_t gen_rp_aer_vector(const PCIDevice *d)
@@ -82,16 +78,15 @@ static void gen_rp_realize(DeviceState *dev, Error **errp)
         return;
     }
 
-    int rc = pci_bridge_qemu_reserve_cap_init(d, 0, grp->bus_reserve,
-            grp->io_reserve, grp->mem_reserve, grp->pref32_reserve,
-            grp->pref64_reserve, errp);
+    int rc = pci_bridge_qemu_reserve_cap_init(d, 0,
+                                              grp->res_reserve, errp);
 
     if (rc < 0) {
         rpc->parent_class.exit(d);
         return;
     }
 
-    if (!grp->io_reserve) {
+    if (!grp->res_reserve.io) {
         pci_word_test_and_clear_mask(d->wmask + PCI_COMMAND,
                                      PCI_COMMAND_IO);
         d->wmask[PCI_IO_BASE] = 0;
@@ -117,12 +112,18 @@ static const VMStateDescription vmstate_rp_dev = {
 };
 
 static Property gen_rp_props[] = {
-    DEFINE_PROP_BOOL("x-migrate-msix", GenPCIERootPort, migrate_msix, true),
-    DEFINE_PROP_UINT32("bus-reserve", GenPCIERootPort, bus_reserve, -1),
-    DEFINE_PROP_SIZE("io-reserve", GenPCIERootPort, io_reserve, -1),
-    DEFINE_PROP_SIZE("mem-reserve", GenPCIERootPort, mem_reserve, -1),
-    DEFINE_PROP_SIZE("pref32-reserve", GenPCIERootPort, pref32_reserve, -1),
-    DEFINE_PROP_SIZE("pref64-reserve", GenPCIERootPort, pref64_reserve, -1),
+    DEFINE_PROP_BOOL("x-migrate-msix", GenPCIERootPort,
+                     migrate_msix, true),
+    DEFINE_PROP_UINT32("bus-reserve", GenPCIERootPort,
+                       res_reserve.bus, -1),
+    DEFINE_PROP_SIZE("io-reserve", GenPCIERootPort,
+                     res_reserve.io, -1),
+    DEFINE_PROP_SIZE("mem-reserve", GenPCIERootPort,
+                     res_reserve.mem_non_pref, -1),
+    DEFINE_PROP_SIZE("pref32-reserve", GenPCIERootPort,
+                     res_reserve.mem_pref_32, -1),
+    DEFINE_PROP_SIZE("pref64-reserve", GenPCIERootPort,
+                     res_reserve.mem_pref_64, -1),
     DEFINE_PROP_END_OF_LIST()
 };