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Introduced in a PCIe r6.0, sec 6.30, DOE provides a config space based mailbox with standard protocol discovery. Each mailbox is accessed through a DOE Extended Capability. Each DOE mailbox must support the DOE discovery protocol in addition to any number of additional protocols. Define core PCIe functionality to manage a single PCIe DOE mailbox at a defined config space offset. Functionality includes iterating, creating, query of supported protocol, and task submission. Destruction of the mailboxes is device managed. Cc: "Li, Ming" <ming4.li@intel.com> Cc: Bjorn Helgaas <helgaas@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Acked-by: Bjorn Helgaas <helgaas@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Co-developed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Link: https://lore.kernel.org/r/20220719205249.566684-4-ira.weiny@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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