pci: Cleanup configuration for pci-hotplug.c

pci-hotplug.c and the CONFIG_PCI_HOTPLUG variable which controls its
compilation are misnamed.  They're not about PCI hotplug in general, but
rather about the pci_add/pci_del interface which are now deprecated in
favour of the more general device_add/device_del interface.  This patch
therefore renames them to pci-hotplug-old.c and CONFIG_PCI_HOTPLUG_OLD.

CONFIG_PCI_HOTPLUG=y was listed twice in {i386,x86_64}-softmmu.make for no
particular reason, so we clean that up too.  In addition it was included in
ppc64-softmmu.mak for which the old hotplug interface was never used and is
unsuitable, so we remove that too.

Most of pci-hotplug.c was additionaly protected by #ifdef TARGET_I386.  The
small piece which wasn't is only called from the pci_add and pci_del hooks
in hmp-commands.hx, which themselves were protected by #ifdef TARGET_I386.
This patch therefore also removes the #ifdef from pci-hotplug-old.c,
and changes the ifdefs in hmp-commands.hx to use CONFIG_PCI_HOTPLUG_OLD.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

default-configs/i386-softmmu.mak

@@ -28,11 +28,10 @@ CONFIG_APPLESMC=y
 CONFIG_I8259=y
 CONFIG_PFLASH_CFI01=y
 CONFIG_TPM_TIS=$(CONFIG_TPM)
-CONFIG_PCI_HOTPLUG=y
+CONFIG_PCI_HOTPLUG_OLD=y
 CONFIG_MC146818RTC=y
 CONFIG_PAM=y
 CONFIG_PCI_PIIX=y
-CONFIG_PCI_HOTPLUG=y
 CONFIG_WDT_IB700=y
 CONFIG_PC_SYSFW=y
 CONFIG_XEN_I386=$(CONFIG_XEN)

default-configs/ppc64-softmmu.mak

@@ -45,7 +45,5 @@ CONFIG_OPENPIC=y
 CONFIG_PSERIES=y
 CONFIG_E500=y
 CONFIG_OPENPIC_KVM=$(and $(CONFIG_E500),$(CONFIG_KVM))
-# For pSeries
-CONFIG_PCI_HOTPLUG=y
 # For PReP
 CONFIG_MC146818RTC=y

default-configs/x86_64-softmmu.mak

@@ -28,11 +28,10 @@ CONFIG_APPLESMC=y
 CONFIG_I8259=y
 CONFIG_PFLASH_CFI01=y
 CONFIG_TPM_TIS=$(CONFIG_TPM)
-CONFIG_PCI_HOTPLUG=y
+CONFIG_PCI_HOTPLUG_OLD=y
 CONFIG_MC146818RTC=y
 CONFIG_PAM=y
 CONFIG_PCI_PIIX=y
-CONFIG_PCI_HOTPLUG=y
 CONFIG_WDT_IB700=y
 CONFIG_PC_SYSFW=y
 CONFIG_XEN_I386=$(CONFIG_XEN)

hmp-commands.hx

@@ -1077,7 +1077,7 @@ STEXI
 Add drive to PCI storage controller.
 ETEXI
 
-#if defined(TARGET_I386)
+#if defined(CONFIG_PCI_HOTPLUG_OLD)
     {
         .name       = "pci_add",
         .args_type  = "pci_addr:s,type:s,opts:s?",
@@ -1093,7 +1093,7 @@ STEXI
 Hot-add PCI device.
 ETEXI
 
-#if defined(TARGET_I386)
+#if defined(CONFIG_PCI_HOTPLUG_OLD)
     {
         .name       = "pci_del",
         .args_type  = "pci_addr:s",

hw/pci/Makefile.objs

@@ -8,4 +8,4 @@ common-obj-$(CONFIG_PCI) += pcie.o pcie_aer.o pcie_port.o
 common-obj-$(CONFIG_NO_PCI) += pci-stub.o
 common-obj-$(CONFIG_ALL) += pci-stub.o
 
-obj-$(CONFIG_PCI_HOTPLUG) += pci-hotplug.o
+common-obj-$(CONFIG_PCI_HOTPLUG_OLD) += pci-hotplug-old.o

hw/pci/pci-hotplug-old.c

@@ -1,5 +1,7 @@
 /*
- * QEMU PCI hotplug support
+ * Deprecated PCI hotplug interface support
+ * This covers the old pci_add / pci_del command, whereas the more general
+ * device_add / device_del commands are now preferred.
  *
  * Copyright (c) 2004 Fabrice Bellard
  *
@@ -34,7 +36,6 @@
 #include "sysemu/blockdev.h"
 #include "qapi/error.h"
 
-#if defined(TARGET_I386)
 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
                                        const char *devaddr,
                                        const char *opts_str)
@@ -257,7 +258,6 @@ void pci_device_hot_add(Monitor *mon, const QDict *qdict)
     } else
         monitor_printf(mon, "failed to add %s\n", opts);
 }
-#endif
 
 static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
 {