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, 21 deletions

diff --git a/hw/pci/pci_bridge.c b/hw/pci/pci_bridge.c
index 40a39f57cb..08b7e44e2e 100644
--- a/hw/pci/pci_bridge.c
+++ b/hw/pci/pci_bridge.c
@@ -411,38 +411,34 @@ void pci_bridge_map_irq(PCIBridge *br, const char* bus_name,
 
 
 int pci_bridge_qemu_reserve_cap_init(PCIDevice *dev, int cap_offset,
-                                     uint32_t bus_reserve, uint64_t io_reserve,
-                                     uint64_t mem_non_pref_reserve,
-                                     uint64_t mem_pref_32_reserve,
-                                     uint64_t mem_pref_64_reserve,
-                                     Error **errp)
+                                     PCIResReserve res_reserve, Error **errp)
 {
-    if (mem_pref_32_reserve != (uint64_t)-1 &&
-        mem_pref_64_reserve != (uint64_t)-1) {
+    if (res_reserve.mem_pref_32 != (uint64_t)-1 &&
+        res_reserve.mem_pref_64 != (uint64_t)-1) {
         error_setg(errp,
                    "PCI resource reserve cap: PREF32 and PREF64 conflict");
         return -EINVAL;
     }
 
-    if (mem_non_pref_reserve != (uint64_t)-1 &&
-        mem_non_pref_reserve >= (1ULL << 32)) {
+    if (res_reserve.mem_non_pref != (uint64_t)-1 &&
+        res_reserve.mem_non_pref >= (1ULL << 32)) {
         error_setg(errp,
                    "PCI resource reserve cap: mem-reserve must be less than 4G");
         return -EINVAL;
     }
 
-    if (mem_pref_32_reserve != (uint64_t)-1 &&
-        mem_pref_32_reserve >= (1ULL << 32)) {
+    if (res_reserve.mem_pref_32 != (uint64_t)-1 &&
+        res_reserve.mem_pref_32 >= (1ULL << 32)) {
         error_setg(errp,
                    "PCI resource reserve cap: pref32-reserve  must be less than 4G");
         return -EINVAL;
     }
 
-    if (bus_reserve == (uint32_t)-1 &&
-        io_reserve == (uint64_t)-1 &&
-        mem_non_pref_reserve == (uint64_t)-1 &&
-        mem_pref_32_reserve == (uint64_t)-1 &&
-        mem_pref_64_reserve == (uint64_t)-1) {
+    if (res_reserve.bus == (uint32_t)-1 &&
+        res_reserve.io == (uint64_t)-1 &&
+        res_reserve.mem_non_pref == (uint64_t)-1 &&
+        res_reserve.mem_pref_32 == (uint64_t)-1 &&
+        res_reserve.mem_pref_64 == (uint64_t)-1) {
         return 0;
     }
 
@@ -450,11 +446,11 @@ int pci_bridge_qemu_reserve_cap_init(PCIDevice *dev, int cap_offset,
     PCIBridgeQemuCap cap = {
             .len = cap_len,
             .type = REDHAT_PCI_CAP_RESOURCE_RESERVE,
-            .bus_res = bus_reserve,
-            .io = io_reserve,
-            .mem = mem_non_pref_reserve,
-            .mem_pref_32 = mem_pref_32_reserve,
-            .mem_pref_64 = mem_pref_64_reserve
+            .bus_res = res_reserve.bus,
+            .io = res_reserve.io,
+            .mem = res_reserve.mem_non_pref,
+            .mem_pref_32 = res_reserve.mem_pref_32,
+            .mem_pref_64 = res_reserve.mem_pref_64
     };
 
     int offset = pci_add_capability(dev, PCI_CAP_ID_VNDR,