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rapidio/tsi721: add messaging mbox selector parameter

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Add module parameter to allow load time configuration of available
RapidIO messaging mailboxes (MBOX1 - MBOX4).

Having a messaging MBOX selector mask allows to define which MBOXes are
controlled by the mport device driver and reserve some of them for
direct use by other drivers.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexandre Bounine <[email protected]>
Tested-by: Barry Wood <[email protected]>
Cc: Matt Porter <[email protected]>
Cc: Andre van Herk <[email protected]>
Cc: Barry Wood <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Alexandre Bounine 2016-08-02 14:06:43 -07:00 • committed by Linus Torvalds
commit e519685de3
2 changed files with 20 additions and 0 deletions
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5
Documentation/rapidio/tsi721.txt
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@ -46,6 +46,11 @@ fully compatible with RIONET driver (Ethernet over RapidIO messaging services).
0 = 128B, 1 = 256B, 2 = 512B, 3 = 1024B, 4 = 2048B and 5 = 4096B.
Default value is '-1' (= keep platform setting).
- 'mbox_sel' - RIO messaging MBOX selection mask. This is a bitmask that defines
messaging MBOXes are managed by this device driver. Mask bits 0 - 3
correspond to MBOX0 - MBOX3. MBOX is under driver's control if the
corresponding bit is set to '1'. Default value is 0x0f (= all).
II. Known problems
None.