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pci: remove bus_num member from struct PCIBus. 

Since It can be retrieved from pci configuration space,
the member is unnecessary.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Isaku Yamahata 2009-10-30 21:21:12 +09:00 committed by Anthony Liguori
parent 1442125843
commit e94ff65026
1 changed files with 10 additions and 11 deletions
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21
hw/pci.c
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@ -36,7 +36,6 @@
struct PCIBus {
BusState qbus;
int bus_num;
int devfn_min;
pci_set_irq_fn set_irq;
pci_map_irq_fn map_irq;
@ -192,7 +191,9 @@ static void pci_register_secondary_bus(PCIBus *bus,
int pci_bus_num(PCIBus *s)
{
return s->bus_num;
if (!s->parent_dev)
return 0; /* pci host bridge */
return s->parent_dev->config[PCI_SECONDARY_BUS];
}
static int get_pci_config_device(QEMUFile *f, void *pv, size_t size)
@ -624,7 +625,7 @@ void pci_data_write(void *opaque, uint32_t addr, uint32_t val, int len)
addr, val, len);
#endif
bus_num = (addr >> 16) & 0xff;
while (s && s->bus_num != bus_num)
while (s && pci_bus_num(s) != bus_num)
s = s->next;
if (!s)
return;
@ -645,7 +646,7 @@ uint32_t pci_data_read(void *opaque, uint32_t addr, int len)
uint32_t val;
bus_num = (addr >> 16) & 0xff;
while (s && s->bus_num != bus_num)
while (s && pci_bus_num(s) != bus_num)
s= s->next;
if (!s)
goto fail;
@ -760,7 +761,8 @@ static void pci_info_device(PCIDevice *d)
const pci_class_desc *desc;
monitor_printf(mon, " Bus %2d, device %3d, function %d:\n",
d->bus->bus_num, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
pci_bus_num(d->bus),
PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
class = pci_get_word(d->config + PCI_CLASS_DEVICE);
monitor_printf(mon, " ");
desc = pci_class_descriptions;
@ -816,7 +818,7 @@ void pci_for_each_device(int bus_num, void (*fn)(PCIDevice *d))
PCIDevice *d;
int devfn;
while (bus && bus->bus_num != bus_num)
while (bus && pci_bus_num(bus) != bus_num)
bus = bus->next;
if (bus) {
for(devfn = 0; devfn < 256; devfn++) {
@ -913,17 +915,14 @@ typedef struct {
static void pci_bridge_write_config(PCIDevice *d,
uint32_t address, uint32_t val, int len)
{
PCIBridge *s = (PCIBridge *)d;
pci_default_write_config(d, address, val, len);
s->bus.bus_num = d->config[PCI_SECONDARY_BUS];
}
PCIBus *pci_find_bus(int bus_num)
{
PCIBus *bus = first_bus;
while (bus && bus->bus_num != bus_num)
while (bus && pci_bus_num(bus) != bus_num)
bus = bus->next;
return bus;
@ -1149,7 +1148,7 @@ static void pcibus_dev_print(Monitor *mon, DeviceState *dev, int indent)
monitor_printf(mon, "%*sclass %s, addr %02x:%02x.%x, "
"pci id %04x:%04x (sub %04x:%04x)\n",
indent, "", ctxt,
d->bus->bus_num, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn),
pci_bus_num(d->bus), PCI_SLOT(d->devfn), PCI_FUNC(d->devfn),
pci_get_word(d->config + PCI_VENDOR_ID),
pci_get_word(d->config + PCI_DEVICE_ID),
pci_get_word(d->config + PCI_SUBSYSTEM_VENDOR_ID),