57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
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#include <console/console.h>
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#include <device.h>
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/**
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* Given a bus and a devfn number, find the device structure
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* @param bus The bus number
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* @param devfn a device/function number
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* @return pointer to the device structure
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*/
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struct device *dev_find_slot(unsigned int bus, unsigned int devfn)
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{
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struct device *dev;
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for (dev = all_devices; dev; dev = dev->next)
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if (dev->bus->secondary == bus && dev->devfn == devfn)
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break;
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return dev;
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}
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/** Find a device of a given vendor and type
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* @param vendor Vendor ID (e.g. 0x8086 for Intel)
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* @param device Device ID
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* @param from Pointer to the device structure, used as a starting point
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* in the linked list of all_devices, which can be 0 to start at the
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* head of the list (i.e. all_devices)
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* @return Pointer to the device struct
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*/
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struct device *dev_find_device(unsigned int vendor, unsigned int device, struct device *from)
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{
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if (!from)
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from = all_devices;
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else
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from = from->next;
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while (from && (from->vendor != vendor || from->device != device))
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from = from->next;
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return from;
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}
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/** Find a device of a given class
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* @param class Class of the device
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* @param from Pointer to the device structure, used as a starting point
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* in the linked list of all_devices, which can be 0 to start at the
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* head of the list (i.e. all_devices)
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* @return Pointer to the device struct
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*/
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struct device *dev_find_class(unsigned int class, struct device *from)
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{
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if (!from)
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from = all_devices;
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else
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from = from->next;
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while (from && from->class != class)
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from = from->next;
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return from;
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}
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