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Multi-function support in PCI
In case of PCI, I am
having some doubts for supporting multiple functions.
The multiple function is
enabled by setting bit 7 in Header Type field of configuration space.
Each function should have
seperate configuration space.
At a time 8 functions can be
supported at the max.
Now the doubt
system comes to know how many functions are supported by the
If the Bit
7 in Header type of first fuction is 1 but that of other functions is 0 or
the functions can be assecced?
device is supporting only 3 functions, whether the BIOS will run the
configuration cycles assuming
device is supporting 8 functions or it knows where to stop for
programming the base address registers.
***** Madhura Bokil. *****
Verna - Goa
Goa - 403 722.