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qemu: add pci helper functions (Marcelo Tosatti)

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Add pci_find_bus/pci_find_device to be used by PCI hotplug.

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@6592 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-02-11 15:19:46 +00:00
parent f029bd940e
commit 3ae8061898
2 changed files with 26 additions and 0 deletions
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20
hw/pci.c
View File

@ -711,6 +711,26 @@ static void pci_bridge_write_config(PCIDevice *d,
pci_default_write_config(d, address, val, len);
}
PCIBus *pci_find_bus(int bus_num)
{
PCIBus *bus = first_bus;
while (bus && bus->bus_num != bus_num)
bus = bus->next;
return bus;
}
PCIDevice *pci_find_device(int bus_num, int slot, int function)
{
PCIBus *bus = pci_find_bus(bus_num);
if (!bus)
return NULL;
return bus->devices[PCI_DEVFN(slot, function)];
}
PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did,
pci_map_irq_fn map_irq, const char *name)
{

6
hw/pci.h
View File

@ -8,6 +8,10 @@
extern target_phys_addr_t pci_mem_base;
#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
#define PCI_FUNC(devfn) ((devfn) & 0x07)
/* Device classes and subclasses */
#define PCI_CLASS_STORAGE_SCSI 0x0100
@ -222,6 +226,8 @@ 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);
int pci_bus_num(PCIBus *s);
void pci_for_each_device(int bus_num, void (*fn)(PCIDevice *d));
PCIBus *pci_find_bus(int bus_num);
PCIDevice *pci_find_device(int bus_num, int slot, int function);
void pci_info(void);
PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did,