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| author | Gavin Shan <shangw@linux.vnet.ibm.com> | 2013-06-20 12:13:22 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-06-21 08:01:50 +0200 |
| commit | 1bc98de26d3f270e004421685a8e698e91cf95ca (patch) | |
| tree | d7d6c70bff77b07b804824496cd65d044b65f44d /arch/powerpc/include | |
| parent | powerpc/eeh: Allow to check fenced PHB proactively (diff) | |
| download | linux-1bc98de26d3f270e004421685a8e698e91cf95ca.tar.xz linux-1bc98de26d3f270e004421685a8e698e91cf95ca.zip | |
powernv/opal: Notifier for OPAL events
This patch implements a notifier to receive a notification on OPAL
event mask changes. The notifier is only called as a result of an OPAL
interrupt, which will happen upon reception of FSP messages or PCI errors.
Any event mask change detected as a result of opal_poll_events() will not
result in a notifier call.
[benh: changelog]
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 28807978bb46..029fe85722aa 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -644,6 +644,11 @@ extern void hvc_opal_init_early(void); extern int early_init_dt_scan_opal(unsigned long node, const char *uname, int depth, void *data); +extern int opal_notifier_register(struct notifier_block *nb); +extern void opal_notifier_enable(void); +extern void opal_notifier_disable(void); +extern void opal_notifier_update_evt(uint64_t evt_mask, uint64_t evt_val); + extern int opal_get_chars(uint32_t vtermno, char *buf, int count); extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len); |