forked from luck/tmp_suning_uos_patched
ac10d4f6c2
When the driver on the local side is loaded, it sets SIDE_READY bit in SIDE_INFO register. Likewise, when it is un-loaded, it clears the bit. Also just after being loaded, the driver polls for peer SIDE_READY bit to be set. Since that bit is set when the peer side driver has loaded, the polling on local side breaks as soon as this condition is met. But the situation is different when the driver is un-loaded. Since the polling has already been stopped as mentioned before, if the peer side driver gets un-loaded, the driver on the local side is not notified implicitly. So, we improvise using existing doorbell mechanism. We reserve the highest order bit of the DB register to send a notification to peer when the driver on local side is un-loaded. This also means that now we are one short of 16 DB events and that is taken care of in the valid DB mask. Signed-off-by: Arindam Nath <arindam.nath@amd.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> |
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| .. | ||
| hw | ||
| test | ||
| core.c | ||
| Kconfig | ||
| Makefile | ||
| msi.c | ||
| ntb_transport.c | ||