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| author | Claudio Carvalho <cclaudio@linux.ibm.com> | 2019-08-28 16:05:21 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-30 02:40:16 +0300 |
| commit | 68e0aa8ec5cedec48dd5b11df84afc956c8f85be (patch) | |
| tree | ccd4c44f35735eb9bc9510fcde4f99cde4c2848f /arch/powerpc/platforms/powernv/powernv.h | |
| parent | dea45ea7775240047f70e2631e468f6b65d09493 (diff) | |
| download | linux-68e0aa8ec5cedec48dd5b11df84afc956c8f85be.tar.xz | |
powerpc/powernv: Add ultravisor message log interface
The ultravisor (UV) provides an in-memory console which follows the
OPAL in-memory console structure.
This patch extends the OPAL msglog code to initialize the UV memory
console and provide the "/sys/firmware/ultravisor/msglog" interface
for userspace to view the UV message log.
Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Claudio Carvalho <cclaudio@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190828130521.26764-2-mpe@ellerman.id.au
Diffstat (limited to 'arch/powerpc/platforms/powernv/powernv.h')
| -rw-r--r-- | arch/powerpc/platforms/powernv/powernv.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/powernv.h b/arch/powerpc/platforms/powernv/powernv.h index fd4a1c5a6369..1aa51c4fa904 100644 --- a/arch/powerpc/platforms/powernv/powernv.h +++ b/arch/powerpc/platforms/powernv/powernv.h @@ -30,4 +30,9 @@ extern void opal_event_shutdown(void); bool cpu_core_split_required(void); +struct memcons; +ssize_t memcons_copy(struct memcons *mc, char *to, loff_t pos, size_t count); +u32 memcons_get_size(struct memcons *mc); +struct memcons *memcons_init(struct device_node *node, const char *mc_prop_name); + #endif /* _POWERNV_H */ |