PCI/endpoint/pci-ntb-function.rst

115 	MSI/MSI-X vectors (i.e., initialize the MSI/MSI-X Capability in the
118 	to the MSI/MSI-X address programmed by the host. The ARGUMENT
120 	lower 16 bits) and if MSI or MSI-X should be configured (BIT 16).
178 	in order to raise doorbell. EPF NTB can use either MSI or MSI-X to
179 	ring doorbell (MSI-X support will be added later). MSI uses same
180 	address for all the interrupts and MSI-X can provide different
181 	addresses for different interrupts. The MSI/MSI-X address is provided
182 	by the host and the address it gives is based on the MSI/MSI-X
184 	using GIC ITS will have the same MSI-X address for all the interrupts.
186 	for both MSI and MSI-X, EPF NTB allocates a separate region in the
188 	be mapped to the MSI/MSI-X address provided by the host. If a host
197 	This holds the MSI/MSI-X data that has to be written to MSI address
305  |       BAR0      |    |      |   Doorbell 1   +-----------> MSI-X ADDRESS 1 |
310  +-----------------+----+      +----------------+       | +-> MSI-X ADDRESS 2 |
314  +-----------------+    |      |      MW1       +---+ | +-->+ MSI-X ADDRESS 3||
318                                |                |   | +---->+ MSI-X ADDRESS 4 |