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powerpc: Make function that parses RTAS error logs global

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The IO event interrupt code has a function that finds specific
sections in an RTAS error log. We want to use it in the EPOW
code so make it global.

Rename things to make it less cryptic:

find_xelog_section() -> get_pseries_errorlog()
struct pseries_elog_section -> struct pseries_errorlog

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard
2012-03-21 15:47:07 +00:00
committed by Benjamin Herrenschmidt
parent 1a5c2e63f4
commit 6431f20879
3 changed files with 69 additions and 66 deletions
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34
arch/powerpc/kernel/rtas.c
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@@ -868,6 +868,40 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
}
#endif
/**
* Find a specific pseries error log in an RTAS extended event log.
* @log: RTAS error/event log
* @section_id: two character section identifier
*
* Returns a pointer to the specified errorlog or NULL if not found.
*/
struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log,
uint16_t section_id)
{
struct rtas_ext_event_log_v6 *ext_log =
(struct rtas_ext_event_log_v6 *)log->buffer;
struct pseries_errorlog *sect;
unsigned char *p, *log_end;
/* Check that we understand the format */
if (log->extended_log_length < sizeof(struct rtas_ext_event_log_v6) ||
ext_log->log_format != RTAS_V6EXT_LOG_FORMAT_EVENT_LOG ||
ext_log->company_id != RTAS_V6EXT_COMPANY_ID_IBM)
return NULL;
log_end = log->buffer + log->extended_log_length;
p = ext_log->vendor_log;
while (p < log_end) {
sect = (struct pseries_errorlog *)p;
if (sect->id == section_id)
return sect;
p += sect->length;
}
return NULL;
}
asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
{
struct rtas_args args;