Jakub Kicinski 8b3d5a47ae nfp: support long reads and writes with the cpp helpers ... nfp_cpp_{read,write}() helpers perform device memory mapping (setting the PCIe -> NOC translation BARs) and accessing it. They, however, currently implicitly expect that the length of entire operation will fit in one BAR translation window. There is a number of 16MB windows available, and we don't really need to access such large areas today. If the user, however, manages to trick the driver into making a big mapping (e.g. by providing a huge fake FW file), the driver will print a warning saying "No suitable BAR found for request" and a stack trace - which most users find concerning. To be future-proof and not scare users with warnings, make the nfp_cpp_{read,write}() helpers do accesses chunk by chunk if the area size is large. Set the notion of "large" to 2MB, which is the size of the smallest BAR window. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-05-30 11:27:05 -04:00
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nfp	nfp: support long reads and writes with the cpp helpers	2017-05-30 11:27:05 -04:00
Kconfig	nfp: add MAY_USE_DEVLINK dependency	2017-05-30 11:27:03 -04:00
Makefile	nfp: rename the driver and add new main file	2017-02-10 15:52:24 -05:00