[RFC PATCH-for-9.1 02/29] hw/i386/pc: Extract pc_machine_is_pci_enabled() helper

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

Introduce the pc_machine_is_pci_enabled() helper to be
able to alter PCMachineClass fields later.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/i386/pc.h |  2 ++
 hw/i386/pc.c         | 11 +++++++++--
 hw/i386/pc_piix.c    | 11 ++++++-----
 hw/i386/pc_q35.c     |  2 +-
 hw/i386/pc_sysfw.c   | 11 ++++-------
 5 files changed, 22 insertions(+), 15 deletions(-)

diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 0ad971782c..6b885424bb 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -129,6 +129,8 @@ struct PCMachineClass {
 #define TYPE_PC_MACHINE "generic-pc-machine"
 OBJECT_DECLARE_TYPE(PCMachineState, PCMachineClass, PC_MACHINE)
 
+bool pc_machine_is_pci_enabled(PCMachineState *pcms);
+
 /* ioapic.c */
 
 GSIState *pc_gsi_create(qemu_irq **irqs, bool pci_enabled);
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 2c41b08478..7065f11e97 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -814,6 +814,7 @@ void pc_memory_init(PCMachineState *pcms,
     hwaddr maxphysaddr, maxusedaddr;
     hwaddr cxl_base, cxl_resv_end = 0;
     X86CPU *cpu = X86_CPU(first_cpu);
+    bool pci_enabled = pc_machine_is_pci_enabled(pcms);
 
     assert(machine->ram_size == x86ms->below_4g_mem_size +
                                 x86ms->above_4g_mem_size);
@@ -949,7 +950,7 @@ void pc_memory_init(PCMachineState *pcms,
     option_rom_mr = g_malloc(sizeof(*option_rom_mr));
     memory_region_init_ram(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE,
                            &error_fatal);
-    if (pcmc->pci_enabled) {
+    if (pci_enabled) {
         memory_region_set_readonly(option_rom_mr, true);
     }
     memory_region_add_subregion_overlap(rom_memory,
@@ -1642,6 +1643,7 @@ static void pc_machine_initfn(Object *obj)
 {
     PCMachineState *pcms = PC_MACHINE(obj);
     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
+    bool pci_enabled = pc_machine_is_pci_enabled(pcms);
 
 #ifdef CONFIG_VMPORT
     pcms->vmport = ON_OFF_AUTO_AUTO;
@@ -1668,7 +1670,7 @@ static void pc_machine_initfn(Object *obj)
     pcms->pcspk = isa_new(TYPE_PC_SPEAKER);
     object_property_add_alias(OBJECT(pcms), "pcspk-audiodev",
                               OBJECT(pcms->pcspk), "audiodev");
-    if (pcmc->pci_enabled) {
+    if (pci_enabled) {
         cxl_machine_init(obj, &pcms->cxl_devices_state);
     }
 
@@ -1810,6 +1812,11 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
         pc_machine_set_fd_bootchk);
 }
 
+bool pc_machine_is_pci_enabled(PCMachineState *pcms)
+{
+    return PC_MACHINE_GET_CLASS(pcms)->pci_enabled;
+}
+
 static const TypeInfo pc_machine_types[] = {
     {
         .name           = TYPE_PC_MACHINE,
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index c00d2a66a6..1be1e050c7 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -117,6 +117,7 @@ static void pc_init1(MachineState *machine, const char *pci_type)
     MemoryRegion *rom_memory = system_memory;
     ram_addr_t lowmem;
     uint64_t hole64_size = 0;
+    bool pci_enabled = pc_machine_is_pci_enabled(pcms);
 
     /*
      * Calculate ram split, for memory below and above 4G.  It's a bit
@@ -187,7 +188,7 @@ static void pc_init1(MachineState *machine, const char *pci_type)
         kvmclock_create(pcmc->kvmclock_create_always);
     }
 
-    if (pcmc->pci_enabled) {
+    if (pci_enabled) {
         pci_memory = g_new(MemoryRegion, 1);
         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
         rom_memory = pci_memory;
@@ -234,9 +235,9 @@ static void pc_init1(MachineState *machine, const char *pci_type)
         }
     }
 
-    gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
+    gsi_state = pc_gsi_create(&x86ms->gsi, pci_enabled);
 
-    if (pcmc->pci_enabled) {
+    if (pci_enabled) {
         PCIDevice *pci_dev;
         DeviceState *dev;
         size_t i;
@@ -308,7 +309,7 @@ static void pc_init1(MachineState *machine, const char *pci_type)
         x86_register_ferr_irq(x86ms->gsi[13]);
     }
 
-    pc_vga_init(isa_bus, pcmc->pci_enabled ? pcms->pcibus : NULL);
+    pc_vga_init(isa_bus, pci_enabled ? pcms->pcibus : NULL);
 
     assert(pcms->vmport != ON_OFF_AUTO__MAX);
     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
@@ -322,7 +323,7 @@ static void pc_init1(MachineState *machine, const char *pci_type)
     pc_nic_init(pcmc, isa_bus, pcms->pcibus);
 
 #ifdef CONFIG_IDE_ISA
-    if (!pcmc->pci_enabled) {
+    if (!pci_enabled) {
         DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
         int i;
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index b5922b44af..43ee1e595c 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -145,7 +145,7 @@ static void pc_q35_init(MachineState *machine)
     bool keep_pci_slot_hpc;
     uint64_t pci_hole64_size = 0;
 
-    assert(pcmc->pci_enabled);
+    assert(pc_machine_is_pci_enabled(pcms));
 
     /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
      * and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
index 3efabbbab2..862a082b0a 100644
--- a/hw/i386/pc_sysfw.c
+++ b/hw/i386/pc_sysfw.c
@@ -93,9 +93,7 @@ static PFlashCFI01 *pc_pflash_create(PCMachineState *pcms,
 
 void pc_system_flash_create(PCMachineState *pcms)
 {
-    PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
-
-    if (pcmc->pci_enabled) {
+    if (pc_machine_is_pci_enabled(pcms)) {
         pcms->flash[0] = pc_pflash_create(pcms, "system.flash0",
                                           "pflash0");
         pcms->flash[1] = pc_pflash_create(pcms, "system.flash1",
@@ -108,7 +106,7 @@ void pc_system_flash_cleanup_unused(PCMachineState *pcms)
     char *prop_name;
     int i;
 
-    assert(PC_MACHINE_GET_CLASS(pcms)->pci_enabled);
+    assert(pc_machine_is_pci_enabled(pcms));
 
     for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) {
         if (!qdev_is_realized(DEVICE(pcms->flash[i]))) {
@@ -146,7 +144,7 @@ static void pc_system_flash_map(PCMachineState *pcms,
     void *flash_ptr;
     int flash_size;
 
-    assert(PC_MACHINE_GET_CLASS(pcms)->pci_enabled);
+    assert(pc_machine_is_pci_enabled(pcms));
 
     for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) {
         system_flash = pcms->flash[i];
@@ -201,11 +199,10 @@ static void pc_system_flash_map(PCMachineState *pcms,
 void pc_system_firmware_init(PCMachineState *pcms,
                              MemoryRegion *rom_memory)
 {
-    PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
     int i;
     BlockBackend *pflash_blk[ARRAY_SIZE(pcms->flash)];
 
-    if (!pcmc->pci_enabled) {
+    if (!pc_machine_is_pci_enabled(pcms)) {
         x86_bios_rom_init(MACHINE(pcms), "bios.bin", rom_memory, true);
         return;
     }
-- 
2.41.0