1e26a5843SAllen Hubbemenuconfig NTB 2e26a5843SAllen Hubbe tristate "Non-Transparent Bridge support" 3fce8a7bbSJon Mason depends on PCI 4fce8a7bbSJon Mason help 5fce8a7bbSJon Mason The PCI-E Non-transparent bridge hardware is a point-to-point PCI-E bus 6fce8a7bbSJon Mason connecting 2 systems. When configured, writes to the device's PCI 7fce8a7bbSJon Mason mapped memory will be mirrored to a buffer on the remote system. The 8fce8a7bbSJon Mason ntb Linux driver uses this point-to-point communication as a method to 9fce8a7bbSJon Mason transfer data from one system to the other. 10fce8a7bbSJon Mason 11fce8a7bbSJon Mason If unsure, say N. 12fce8a7bbSJon Mason 13e26a5843SAllen Hubbeif NTB 14e26a5843SAllen Hubbe 15*26b3a37bSLogan Gunthorpeconfig NTB_MSI 16*26b3a37bSLogan Gunthorpe bool "MSI Interrupt Support" 17*26b3a37bSLogan Gunthorpe depends on PCI_MSI 18*26b3a37bSLogan Gunthorpe help 19*26b3a37bSLogan Gunthorpe Support using MSI interrupt forwarding instead of (or in addition to) 20*26b3a37bSLogan Gunthorpe hardware doorbells. MSI interrupts typically offer lower latency 21*26b3a37bSLogan Gunthorpe than doorbells and more MSI interrupts can be made available to 22*26b3a37bSLogan Gunthorpe clients. However this requires an extra memory window and support 23*26b3a37bSLogan Gunthorpe in the hardware driver for creating the MSI interrupts. 24*26b3a37bSLogan Gunthorpe 25*26b3a37bSLogan Gunthorpe If unsure, say N. 26e26a5843SAllen Hubbesource "drivers/ntb/hw/Kconfig" 27e26a5843SAllen Hubbe 28963de473SAllen Hubbesource "drivers/ntb/test/Kconfig" 29963de473SAllen Hubbe 30e26a5843SAllen Hubbeconfig NTB_TRANSPORT 31e26a5843SAllen Hubbe tristate "NTB Transport Client" 32e26a5843SAllen Hubbe help 33e26a5843SAllen Hubbe This is a transport driver that enables connected systems to exchange 34e26a5843SAllen Hubbe messages over the ntb hardware. The transport exposes a queue pair api 35e26a5843SAllen Hubbe to client drivers. 36e26a5843SAllen Hubbe 37e26a5843SAllen Hubbe If unsure, say N. 38e26a5843SAllen Hubbe 39e26a5843SAllen Hubbeendif # NTB 40