[PARISC] Ensure Space ID hashing is turned off

[deliverable/linux.git] / arch / parisc / kernel / firmware.c

diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index 2dc06b8e18171f0e485d750d85f56be4ac197802..c80c277454f399a9dbc78bb654c528344d7fb437 100644 (file)
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -11,7 +11,7 @@
  * Copyright 1999 The Puffin Group, (Alex deVries, David Kennedy)
  * Copyright 2003 Grant Grundler <grundler parisc-linux org>
  * Copyright 2003,2004 Ryan Bradetich <rbrad@parisc-linux.org>
- * Copyright 2004 Thibaut VARENE <varenet@parisc-linux.org>
+ * Copyright 2004,2006 Thibaut VARENE <varenet@parisc-linux.org>
  *
  *    This program is free software; you can redistribute it and/or modify
  *    it under the terms of the GNU General Public License as published by
@@ -252,10 +252,8 @@ int pdc_pat_chassis_send_log(unsigned long state, unsigned long data)
 #endif
 
 /**
- * pdc_chassis_disp - Updates display
+ * pdc_chassis_disp - Updates chassis code
  * @retval: -1 on error, 0 on success
- *
- * Works on old PDC only (E class, others?)
  */
 int pdc_chassis_disp(unsigned long disp)
 {
@@ -268,6 +266,22 @@ int pdc_chassis_disp(unsigned long disp)
        return retval;
 }
 
+/**
+ * pdc_chassis_warn - Fetches chassis warnings
+ * @retval: -1 on error, 0 on success
+ */
+int pdc_chassis_warn(unsigned long *warn)
+{
+       int retval = 0;
+
+       spin_lock_irq(&pdc_lock);
+       retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result));
+       *warn = pdc_result[0];
+       spin_unlock_irq(&pdc_lock);
+
+       return retval;
+}
+
 /**
  * pdc_coproc_cfg - To identify coprocessors attached to the processor.
  * @pdc_coproc_info: Return buffer address.
@@ -498,6 +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.