MIPS: CM: Introduce core-other locking functions

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Introduce mips_cm_lock_other & mips_cm_unlock_other, mirroring the
existing CPC equivalents, in order to lock access from the current core
to another via the core-other GCR region. This hasn't been required in
the past but with CM3 the CPC starts using GCR_CL_OTHER rather than
CPC_CL_OTHER and this will be required for safety.

[ralf@linux-mips.org: Fix merge conflict.]

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/11207/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

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Paul Burton 2015-09-22 11:12:16 -07:00 • committed by Ralf Baechle

parent 252d6aa605

commit 23d5de8efb

2 changed files with 71 additions and 0 deletions

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32

arch/mips/include/asm/mips-cm.h

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39

arch/mips/kernel/mips-cm.c

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