Allocate PCI BARs where needed #230
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rbradford
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Mar 13, 2023
rbradford
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- bootinfo: Support specifying a region to allocate PCI BARs from
- pci: Allocate PCI BARs from advertised range
- fdt: Support adjusting Info::pci_bar_memory()
In some situations it will be necessary to allocate PCI BARs from some address space provided by the platform. This provides a memory range that can be used. Signed-off-by: Rob Bradford <[email protected]>
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I've tested this with my RV64 port and it works well. |
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If memory is provided to program the PCI BARs from then use that memory to simply allocate (in a contiguous, naturally aligned manner) memory to use for the BARs. This requires the explicity initialisation of the PCI device earlier in order to provide the BAR sizes that are calculated as part of the PciDevice::init() method. Signed-off-by: Rob Bradford <[email protected]>
This allows systems using the FDT boot method to specify PCI BAR memory space. Signed-off-by: Rob Bradford <[email protected]>
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