qemu: return PCIDevice on net device init and record devfn (Marcelo Tosatti)

Change the PCI network drivers init functions to return the PCIDev, to
inform which slot has been hot-plugged.

Also record PCIDevice structure on NICInfo to locate for release on
hot-removal.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6593 c046a42c-6fe2-441c-8c8c-71466251a162

hw/e1000.c

@@ -1034,7 +1034,7 @@ e1000_mmio_map(PCIDevice *pci_dev, int region_num,
                                      excluded_regs[i] - 4);
 }
 
-void
+PCIDevice *
 pci_e1000_init(PCIBus *bus, NICInfo *nd, int devfn)
 {
     E1000State *d;
@@ -1092,4 +1092,6 @@ pci_e1000_init(PCIBus *bus, NICInfo *nd, int devfn)
     qemu_format_nic_info_str(d->vc, d->nd->macaddr);
 
     register_savevm(info_str, -1, 2, nic_save, nic_load, d);
+
+    return (PCIDevice *)d;
 }

hw/eepro100.c

@@ -1735,7 +1735,7 @@ static void nic_save(QEMUFile * f, void *opaque)
     qemu_put_buffer(f, s->configuration, sizeof(s->configuration));
 }
 
-static void nic_init(PCIBus * bus, NICInfo * nd,
+static PCIDevice *nic_init(PCIBus * bus, NICInfo * nd,
                      const char *name, uint32_t device)
 {
     PCIEEPRO100State *d;
@@ -1783,22 +1783,23 @@ static void nic_init(PCIBus * bus, NICInfo * nd,
     qemu_register_reset(nic_reset, s);
 
     register_savevm(name, -1, 3, nic_save, nic_load, s);
+    return (PCIDevice *)d;
 }
 
-void pci_i82551_init(PCIBus * bus, NICInfo * nd, int devfn)
+PCIDevice *pci_i82551_init(PCIBus * bus, NICInfo * nd, int devfn)
 {
-    nic_init(bus, nd, "i82551", i82551);
+    return nic_init(bus, nd, "i82551", i82551);
     //~ uint8_t *pci_conf = d->dev.config;
 }
 
-void pci_i82557b_init(PCIBus * bus, NICInfo * nd, int devfn)
+PCIDevice *pci_i82557b_init(PCIBus * bus, NICInfo * nd, int devfn)
 {
-    nic_init(bus, nd, "i82557b", i82557B);
+    return nic_init(bus, nd, "i82557b", i82557B);
 }
 
-void pci_i82559er_init(PCIBus * bus, NICInfo * nd, int devfn)
+PCIDevice *pci_i82559er_init(PCIBus * bus, NICInfo * nd, int devfn)
 {
-    nic_init(bus, nd, "i82559er", i82559ER);
+    return nic_init(bus, nd, "i82559er", i82559ER);
 }
 
 /* eof */

hw/ne2000.c

@@ -777,7 +777,7 @@ static void ne2000_map(PCIDevice *pci_dev, int region_num,
     register_ioport_read(addr + 0x1f, 1, 1, ne2000_reset_ioport_read, s);
 }
 
-void pci_ne2000_init(PCIBus *bus, NICInfo *nd, int devfn)
+PCIDevice *pci_ne2000_init(PCIBus *bus, NICInfo *nd, int devfn)
 {
     PCINE2000State *d;
     NE2000State *s;
@@ -807,4 +807,6 @@ void pci_ne2000_init(PCIBus *bus, NICInfo *nd, int devfn)
     qemu_format_nic_info_str(s->vc, s->macaddr);
 
     register_savevm("ne2000", -1, 3, ne2000_save, ne2000_load, s);
+
+    return (PCIDevice *)d;
 }

hw/pci.c

@@ -662,7 +662,7 @@ static const char * const pci_nic_models[] = {
     NULL
 };
 
-typedef void (*PCINICInitFn)(PCIBus *, NICInfo *, int);
+typedef PCIDevice *(*PCINICInitFn)(PCIBus *, NICInfo *, int);
 
 static PCINICInitFn pci_nic_init_fns[] = {
     pci_ne2000_init,
@@ -677,16 +677,23 @@ static PCINICInitFn pci_nic_init_fns[] = {
 };
 
 /* Initialize a PCI NIC.  */
-void pci_nic_init(PCIBus *bus, NICInfo *nd, int devfn,
+PCIDevice *pci_nic_init(PCIBus *bus, NICInfo *nd, int devfn,
                   const char *default_model)
 {
+    PCIDevice *pci_dev;
     int i;
 
     qemu_check_nic_model_list(nd, pci_nic_models, default_model);
 
     for (i = 0; pci_nic_models[i]; i++)
-        if (strcmp(nd->model, pci_nic_models[i]) == 0)
+        if (strcmp(nd->model, pci_nic_models[i]) == 0) {
-            pci_nic_init_fns[i](bus, nd, devfn);
+            pci_dev = pci_nic_init_fns[i](bus, nd, devfn);
+            if (pci_dev)
+                nd->private = pci_dev;
+            return pci_dev;
+        }
+
+    return NULL;
 }
 
 typedef struct {

hw/pci.h

@@ -220,7 +220,7 @@ typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);
 PCIBus *pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
                          qemu_irq *pic, int devfn_min, int nirq);
 
-void pci_nic_init(PCIBus *bus, NICInfo *nd, int devfn,
+PCIDevice *pci_nic_init(PCIBus *bus, NICInfo *nd, int devfn,
                   const char *default_model);
 void pci_data_write(void *opaque, uint32_t addr, uint32_t val, int len);
 uint32_t pci_data_read(void *opaque, uint32_t addr, int len);
@@ -269,23 +269,23 @@ void usb_ohci_init_pci(struct PCIBus *bus, int num_ports, int devfn);
 
 /* eepro100.c */
 
-void pci_i82551_init(PCIBus *bus, NICInfo *nd, int devfn);
+PCIDevice *pci_i82551_init(PCIBus *bus, NICInfo *nd, int devfn);
-void pci_i82557b_init(PCIBus *bus, NICInfo *nd, int devfn);
+PCIDevice *pci_i82557b_init(PCIBus *bus, NICInfo *nd, int devfn);
-void pci_i82559er_init(PCIBus *bus, NICInfo *nd, int devfn);
+PCIDevice *pci_i82559er_init(PCIBus *bus, NICInfo *nd, int devfn);
 
 /* ne2000.c */
 
-void pci_ne2000_init(PCIBus *bus, NICInfo *nd, int devfn);
+PCIDevice *pci_ne2000_init(PCIBus *bus, NICInfo *nd, int devfn);
 
 /* rtl8139.c */
 
-void pci_rtl8139_init(PCIBus *bus, NICInfo *nd, int devfn);
+PCIDevice *pci_rtl8139_init(PCIBus *bus, NICInfo *nd, int devfn);
 
 /* e1000.c */
-void pci_e1000_init(PCIBus *bus, NICInfo *nd, int devfn);
+PCIDevice *pci_e1000_init(PCIBus *bus, NICInfo *nd, int devfn);
 
 /* pcnet.c */
-void pci_pcnet_init(PCIBus *bus, NICInfo *nd, int devfn);
+PCIDevice *pci_pcnet_init(PCIBus *bus, NICInfo *nd, int devfn);
 
 /* prep_pci.c */
 PCIBus *pci_prep_init(qemu_irq *pic);

hw/pcnet.c

@@ -1985,7 +1985,7 @@ static void pci_physical_memory_read(void *dma_opaque, target_phys_addr_t addr,
     cpu_physical_memory_read(addr, buf, len);
 }
 
-void pci_pcnet_init(PCIBus *bus, NICInfo *nd, int devfn)
+PCIDevice *pci_pcnet_init(PCIBus *bus, NICInfo *nd, int devfn)
 {
     PCNetState *d;
     uint8_t *pci_conf;
@@ -2032,6 +2032,7 @@ void pci_pcnet_init(PCIBus *bus, NICInfo *nd, int devfn)
     d->pci_dev = &d->dev;
 
     pcnet_common_init(d, nd);
+    return (PCIDevice *)d;
 }
 
 /* SPARC32 interface */

hw/rtl8139.c

@@ -3414,7 +3414,7 @@ static void rtl8139_timer(void *opaque)
 }
 #endif /* RTL8139_ONBOARD_TIMER */
 
-void pci_rtl8139_init(PCIBus *bus, NICInfo *nd, int devfn)
+PCIDevice *pci_rtl8139_init(PCIBus *bus, NICInfo *nd, int devfn)
 {
     PCIRTL8139State *d;
     RTL8139State *s;
@@ -3466,4 +3466,5 @@ void pci_rtl8139_init(PCIBus *bus, NICInfo *nd, int devfn)
     qemu_mod_timer(s->timer,
         rtl8139_get_next_tctr_time(s,qemu_get_clock(vm_clock)));
 #endif /* RTL8139_ONBOARD_TIMER */
+    return (PCIDevice *)d;
 }

hw/virtio-net.c

@@ -560,7 +560,7 @@ static int virtio_net_load(QEMUFile *f, void *opaque, int version_id)
     return 0;
 }
 
-void virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn)
+PCIDevice *virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn)
 {
     VirtIONet *n;
     static int virtio_net_id;
@@ -574,7 +574,7 @@ void virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn)
                                      sizeof(struct virtio_net_config),
                                      sizeof(VirtIONet));
     if (!n)
-        return;
+        return NULL;
 
     n->vdev.get_config = virtio_net_get_config;
     n->vdev.set_config = virtio_net_set_config;
@@ -599,12 +599,13 @@ void virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn)
 
     n->mac_table.macs = qemu_mallocz(MAC_TABLE_ENTRIES * ETH_ALEN);
     if (!n->mac_table.macs)
-        return;
+        return NULL;
 
     n->vlans = qemu_mallocz(MAX_VLAN >> 3);
     if (!n->vlans)
-        return;
+        return NULL;
 
     register_savevm("virtio-net", virtio_net_id++, VIRTIO_NET_VM_VERSION,
                     virtio_net_save, virtio_net_load, n);
+    return (PCIDevice *)n;
 }

hw/virtio-net.h

@@ -85,7 +85,7 @@ struct virtio_net_hdr_mrg_rxbuf
     uint16_t num_buffers;   /* Number of merged rx buffers */
 };
 
-void virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn);
+PCIDevice *virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn);
 
 /*
  * Control virtqueue data structures

net.h

@@ -64,6 +64,7 @@ struct NICInfo {
     const char *model;
     const char *name;
     VLANState *vlan;
+    void *private;
 };
 
 extern int nb_nics;