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authorLogan Gunthorpe <logang@deltatee.com>2017-08-03 21:19:47 +0300
committerJon Mason <jdmason@kudzu.us>2017-11-19 04:37:12 +0300
commitec0467ccbdeb69a86c8729073057bda7bce00eec (patch)
tree1ecef00f35997951e9f3380c8057fd9e0e4567d3 /drivers/acpi/acpi_memhotplug.c
parent33dea5aae0320345af26ae9aba0894a930e0d4ec (diff)
downloadlinux-ec0467ccbdeb69a86c8729073057bda7bce00eec.tar.xz
NTB: switchtec_ntb: Initialize hardware for memory windows
Add the code to initialize the memory windows in the hardware. This includes setting up the requester ID table, and figuring out which BAR corresponds to which memory window. (Seeing the switch can be configured with any number of BARs.) Also, seeing the device doesn't have hardware for scratchpads or determining the link status, we create a shared memory window that has these features. A magic number with a version component will be used to determine if the other side's driver is actually up. The shared memory window also informs the other side of the size and count of the local memory windows. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Stephen Bates <sbates@raithlin.com> Reviewed-by: Kurt Schwemmer <kurt.schwemmer@microsemi.com> Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/acpi/acpi_memhotplug.c')
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