diff options
Diffstat (limited to 'arch/parisc/kernel/firmware.c')
| -rw-r--r-- | arch/parisc/kernel/firmware.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c index 0596f27340c..c80c277454f 100644 --- a/arch/parisc/kernel/firmware.c +++ b/arch/parisc/kernel/firmware.c @@ -512,6 +512,26 @@ int pdc_cache_info(struct pdc_cache_info *cache_info) return retval; } +/** + * pdc_spaceid_bits - Return whether Space ID hashing is turned on. + * @space_bits: Should be 0, if not, bad mojo! + * + * Returns information about Space ID hashing. + */ +int pdc_spaceid_bits(unsigned long *space_bits) +{ + int retval; + + spin_lock_irq(&pdc_lock); + pdc_result[0] = 0; + retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_RET_SPID, __pa(pdc_result), 0); + convert_to_wide(pdc_result); + *space_bits = pdc_result[0]; + spin_unlock_irq(&pdc_lock); + + return retval; +} + #ifndef CONFIG_PA20 /** * pdc_btlb_info - Return block TLB information. |