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switchtec: Add IOCTLs to the Switchtec driver

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Add a couple of special IOCTLs to:

* Inform userspace of firmware partition locations
* Pass event counts and allow userspace to wait on events
* Translate PFF numbers used by the switch to port numbers

[Dan Carpenter <[email protected]>: fix off-by-one in
ioctl_event_ctl()]
Tested-by: Krishna Dhulipala <[email protected]>
Signed-off-by: Logan Gunthorpe <[email protected]>
Signed-off-by: Stephen Bates <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Wei Zhang <[email protected]>
Reviewed-by: Jens Axboe <[email protected]>
This commit is contained in:
Logan Gunthorpe 2017-03-02 16:24:34 -07:00 • committed by Bjorn Helgaas
commit 52eabba5bc
5 changed files with 642 additions and 0 deletions
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1
Documentation/ioctl/ioctl-number.txt
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@ -191,6 +191,7 @@ Code Seq#(hex) Include File Comments
'W' 00-1F linux/watchdog.h conflict!
'W' 00-1F linux/wanrouter.h conflict! (pre 3.9)
'W' 00-3F sound/asound.h conflict!
'W' 40-5F drivers/pci/switch/switchtec.c
'X' all fs/xfs/xfs_fs.h conflict!
and fs/xfs/linux-2.6/xfs_ioctl32.h
and include/linux/falloc.h