Merge branch 'drm-forlinus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...

[pandora-kernel.git] / arch / powerpc / mm / stab.c

diff --git a/arch/powerpc/mm/stab.c b/arch/powerpc/mm/stab.c
index fa325db..82e4951 100644 (file)
--- a/arch/powerpc/mm/stab.c
+++ b/arch/powerpc/mm/stab.c
@@ -20,6 +20,7 @@
 #include <asm/cputable.h>
 #include <asm/lmb.h>
 #include <asm/abs_addr.h>
+#include <asm/firmware.h>
 
 struct stab_entry {
        unsigned long esid_data;
@@ -39,7 +40,7 @@ static int make_ste(unsigned long stab, unsigned long esid, unsigned long vsid)
        unsigned long entry, group, old_esid, castout_entry, i;
        unsigned int global_entry;
        struct stab_entry *ste, *castout_ste;
-       unsigned long kernel_segment = (esid << SID_SHIFT) >= KERNELBASE;
+       unsigned long kernel_segment = (esid << SID_SHIFT) >= PAGE_OFFSET;
 
        vsid_data = vsid << STE_VSID_SHIFT;
        esid_data = esid << SID_SHIFT | STE_ESID_KP | STE_ESID_V;
@@ -82,7 +83,7 @@ static int make_ste(unsigned long stab, unsigned long esid, unsigned long vsid)
                }
 
                /* Dont cast out the first kernel segment */
-               if ((castout_ste->esid_data & ESID_MASK) != KERNELBASE)
+               if ((castout_ste->esid_data & ESID_MASK) != PAGE_OFFSET)
                        break;
 
                castout_entry = (castout_entry + 1) & 0xf;
@@ -121,7 +122,7 @@ static int __ste_allocate(unsigned long ea, struct mm_struct *mm)
        unsigned long offset;
 
        /* Kernel or user address? */
-       if (ea >= KERNELBASE) {
+       if (is_kernel_addr(ea)) {
                vsid = get_kernel_vsid(ea);
        } else {
                if ((ea >= TASK_SIZE_USER64) || (! mm))
@@ -132,7 +133,7 @@ static int __ste_allocate(unsigned long ea, struct mm_struct *mm)
 
        stab_entry = make_ste(get_paca()->stab_addr, GET_ESID(ea), vsid);
 
-       if (ea < KERNELBASE) {
+       if (!is_kernel_addr(ea)) {
                offset = __get_cpu_var(stab_cache_ptr);
                if (offset < NR_STAB_CACHE_ENTRIES)
                        __get_cpu_var(stab_cache[offset++]) = stab_entry;
@@ -189,7 +190,7 @@ void switch_stab(struct task_struct *tsk, struct mm_struct *mm)
                     entry++, ste++) {
                        unsigned long ea;
                        ea = ste->esid_data & ESID_MASK;
-                       if (ea < KERNELBASE) {
+                       if (!is_kernel_addr(ea)) {
                                ste->esid_data = 0;
                        }
                }
@@ -250,13 +251,13 @@ void stabs_alloc(void)
                        panic("Unable to allocate segment table for CPU %d.\n",
                              cpu);
 
-               newstab += KERNELBASE;
+               newstab = (unsigned long)__va(newstab);
 
                memset((void *)newstab, 0, HW_PAGE_SIZE);
 
                paca[cpu].stab_addr = newstab;
                paca[cpu].stab_real = virt_to_abs(newstab);
-               printk(KERN_DEBUG "Segment table for CPU %d at 0x%lx "
+               printk(KERN_INFO "Segment table for CPU %d at 0x%lx "
                       "virtual, 0x%lx absolute\n",
                       cpu, paca[cpu].stab_addr, paca[cpu].stab_real);
        }
@@ -269,11 +270,24 @@ void stabs_alloc(void)
  */
 void stab_initialize(unsigned long stab)
 {
-       unsigned long vsid = get_kernel_vsid(KERNELBASE);
+       unsigned long vsid = get_kernel_vsid(PAGE_OFFSET);
+       unsigned long stabreal;
 
        asm volatile("isync; slbia; isync":::"memory");
-       make_ste(stab, GET_ESID(KERNELBASE), vsid);
+       make_ste(stab, GET_ESID(PAGE_OFFSET), vsid);
 
        /* Order update */
        asm volatile("sync":::"memory");
+
+       /* Set ASR */
+       stabreal = get_paca()->stab_real | 0x1ul;
+
+#ifdef CONFIG_PPC_ISERIES
+       if (firmware_has_feature(FW_FEATURE_ISERIES)) {
+               HvCall1(HvCallBaseSetASR, stabreal);
+               return;
+       }
+#endif /* CONFIG_PPC_ISERIES */
+
+       mtspr(SPRN_ASR, stabreal);
 }