diff options
| author | Jack Steiner <steiner@sgi.com> | 2009-12-15 16:48:07 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-16 07:20:15 -0800 |
| commit | 648eb8e50200a09db2488623958d9cbd4b8aaf55 (patch) | |
| tree | b8f2dc6444eccbd7a34cdea784528a46eeebb84b /drivers/misc | |
| parent | f2965d68b6775290218ff2a040e64c8b40556280 (diff) | |
| download | kernel_samsung_smdk4412-648eb8e50200a09db2488623958d9cbd4b8aaf55.zip kernel_samsung_smdk4412-648eb8e50200a09db2488623958d9cbd4b8aaf55.tar.gz kernel_samsung_smdk4412-648eb8e50200a09db2488623958d9cbd4b8aaf55.tar.bz2 | |
gru: improve messages for malfunctioning GRUs
Improve error messages for malfunctioning GRUs. Identify the type of
instruction that is failing.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/sgi-gru/gruhandles.c | 22 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/gruhandles.h | 6 |
2 files changed, 25 insertions, 3 deletions
diff --git a/drivers/misc/sgi-gru/gruhandles.c b/drivers/misc/sgi-gru/gruhandles.c index 37e7cfc..806419a 100644 --- a/drivers/misc/sgi-gru/gruhandles.c +++ b/drivers/misc/sgi-gru/gruhandles.c @@ -54,6 +54,21 @@ static void start_instruction(void *h) gru_flush_cache(h); } +static void report_instruction_timeout(void *h) +{ + unsigned long goff = GSEGPOFF((unsigned long)h); + char *id = "???"; + + if (TYPE_IS(CCH, goff)) + id = "CCH"; + else if (TYPE_IS(TGH, goff)) + id = "TGH"; + else if (TYPE_IS(TFH, goff)) + id = "TFH"; + + panic(KERN_ALERT "GRU %p (%s) is malfunctioning\n", h, id); +} + static int wait_instruction_complete(void *h, enum mcs_op opc) { int status; @@ -64,9 +79,10 @@ static int wait_instruction_complete(void *h, enum mcs_op opc) status = GET_MSEG_HANDLE_STATUS(h); if (status != CCHSTATUS_ACTIVE) break; - if (GRU_OPERATION_TIMEOUT < (get_cycles() - start_time)) - panic("GRU %p is malfunctioning: start %ld, end %ld\n", - h, start_time, (unsigned long)get_cycles()); + if (GRU_OPERATION_TIMEOUT < (get_cycles() - start_time)) { + report_instruction_timeout(h); + start_time = get_cycles(); + } } if (gru_options & OPT_STATS) update_mcs_stats(opc, get_cycles() - start_time); diff --git a/drivers/misc/sgi-gru/gruhandles.h b/drivers/misc/sgi-gru/gruhandles.h index f441122..47b762f 100644 --- a/drivers/misc/sgi-gru/gruhandles.h +++ b/drivers/misc/sgi-gru/gruhandles.h @@ -91,6 +91,12 @@ /* Convert an arbitrary handle address to the beginning of the GRU segment */ #define GRUBASE(h) ((void *)((unsigned long)(h) & ~(GRU_SIZE - 1))) +/* Test a valid handle address to determine the type */ +#define TYPE_IS(hn, h) ((h) >= GRU_##hn##_BASE && (h) < \ + GRU_##hn##_BASE + GRU_NUM_##hn * GRU_HANDLE_STRIDE && \ + (((h) & (GRU_HANDLE_STRIDE - 1)) == 0)) + + /* General addressing macros. */ static inline void *get_gseg_base_address(void *base, int ctxnum) { |