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Add test to match struct device with pci_devfn_t 

Add a function to test if pci_devfn_t matches with a device
instance of struct device, by comparing bus:dev.fn.

Change-Id: Ic6c3148ac62c7183246d83302ee504b17064c794
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3474
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
This commit is contained in:
Kyösti Mälkki 2013-06-15 17:16:56 +03:00
parent 842f0bab04
commit c73acdb69e
3 changed files with 18 additions and 0 deletions
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13
src/device/pci_device.c
View File

@ -1053,6 +1053,19 @@ device_t pci_probe_dev(device_t dev, struct bus *bus, unsigned devfn)
return dev; return dev;
} }
/**
* Test for match between romstage and ramstage device instance.
*
* @param dev Pointer to the device structure.
* @param sdev Simple device model identifier, created with PCI_DEV().
* @return Non-zero if bus:dev.fn of device matches.
*/
unsigned int pci_match_simple_dev(device_t dev, pci_devfn_t sdev)
{
return dev->bus->secondary == PCI_DEV2SEGBUS(sdev) &&
dev->path.pci.devfn == PCI_DEV2DEVFN(sdev);
}
/** /**
* Scan a PCI bus. * Scan a PCI bus.
* *

1
src/include/device/pci.h
View File

@ -79,6 +79,7 @@ unsigned pci_find_capability(device_t dev, unsigned cap);
struct resource *pci_get_resource(struct device *dev, unsigned long index); struct resource *pci_get_resource(struct device *dev, unsigned long index);
void pci_dev_set_subsystem(device_t dev, unsigned vendor, unsigned device); void pci_dev_set_subsystem(device_t dev, unsigned vendor, unsigned device);
void pci_dev_init(struct device *dev); void pci_dev_init(struct device *dev);
unsigned int pci_match_simple_dev(device_t dev, pci_devfn_t sdev);
void pci_assign_irqs(unsigned bus, unsigned slot, void pci_assign_irqs(unsigned bus, unsigned slot,
const unsigned char pIntAtoD[4]); const unsigned char pIntAtoD[4]);

4
src/include/device/pci_def.h
View File

@ -474,4 +474,8 @@
#define PCI_FUNC(devfn) ((devfn) & 0x07) #define PCI_FUNC(devfn) ((devfn) & 0x07)
#define PCI_BDF(bus,dev,func) ((bus) << 16 | (dev) << 11 | (func) << 8) #define PCI_BDF(bus,dev,func) ((bus) << 16 | (dev) << 11 | (func) << 8)
/* Translation from PCI_DEV() to devicetree bus and path.pci.devfn. */
#define PCI_DEV2DEVFN(sdev) (((sdev)>>12) & 0xff)
#define PCI_DEV2SEGBUS(sdev) (((sdev)>>20) & 0xfff)
#endif /* PCI_DEF_H */ #endif /* PCI_DEF_H */