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authorDavid S. Miller <davem@sunset.davemloft.net>2006-02-10 18:39:51 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 04:12:15 -0500
commit12eaa328f9fb2d3fcb5afb682c762690d05a3cd8 (patch)
treecce4e68b971757010a3e0bbf035fc65a381a3cd4 /arch/sparc64/mm/init.c
parent18397944642cbca7fcd4a109b43ed5b4652e95b9 (diff)
[SPARC64]: Use ASI_SCRATCHPAD address 0x0 properly.
This is where the virtual address of the fault status area belongs. To set it up we don't make a hypervisor call, instead we call OBP's SUNW,set-trap-table with the real address of the fault status area as the second argument. And right before that call we write the virtual address into ASI_SCRATCHPAD vaddr 0x0. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/mm/init.c')
-rw-r--r--arch/sparc64/mm/init.c22
1 files changed, 1 insertions, 21 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 7faba33202a9..88eb6f6be562 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -1109,24 +1109,6 @@ static void __init tsb_phys_patch(void)
1109 } 1109 }
1110} 1110}
1111 1111
1112/* Register this cpu's fault status area with the hypervisor. */
1113void __cpuinit sun4v_register_fault_status(void)
1114{
1115 register unsigned long func asm("%o5");
1116 register unsigned long arg0 asm("%o0");
1117 int cpu = hard_smp_processor_id();
1118 struct trap_per_cpu *tb = &trap_block[cpu];
1119 unsigned long pa;
1120
1121 pa = kern_base + ((unsigned long) tb - KERNBASE);
1122 func = HV_FAST_MMU_FAULT_AREA_CONF;
1123 arg0 = pa;
1124 __asm__ __volatile__("ta %4"
1125 : "=&r" (func), "=&r" (arg0)
1126 : "0" (func), "1" (arg0),
1127 "i" (HV_FAST_TRAP));
1128}
1129
1130/* paging_init() sets up the page tables */ 1112/* paging_init() sets up the page tables */
1131 1113
1132extern void cheetah_ecache_flush_init(void); 1114extern void cheetah_ecache_flush_init(void);
@@ -1147,10 +1129,8 @@ void __init paging_init(void)
1147 tlb_type == hypervisor) 1129 tlb_type == hypervisor)
1148 tsb_phys_patch(); 1130 tsb_phys_patch();
1149 1131
1150 if (tlb_type == hypervisor) { 1132 if (tlb_type == hypervisor)
1151 sun4v_patch_tlb_handlers(); 1133 sun4v_patch_tlb_handlers();
1152 sun4v_register_fault_status();
1153 }
1154 1134
1155 /* Find available physical memory... */ 1135 /* Find available physical memory... */
1156 read_obp_memory("available", &pavail[0], &pavail_ents); 1136 read_obp_memory("available", &pavail[0], &pavail_ents);