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Diffstat (limited to 'arch/mips/mm/tlb-r4k.c')
-rw-r--r--arch/mips/mm/tlb-r4k.c84
1 files changed, 16 insertions, 68 deletions
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index d73428b..c618eed 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -303,7 +303,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
unsigned long lo;
write_c0_pagemask(PM_HUGE_MASK);
ptep = (pte_t *)pmdp;
- lo = pte_val(*ptep) >> 6;
+ lo = pte_to_entrylo(pte_val(*ptep));
write_c0_entrylo0(lo);
write_c0_entrylo1(lo + (HPAGE_SIZE >> 7));
@@ -323,8 +323,8 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
ptep++;
write_c0_entrylo1(ptep->pte_high);
#else
- write_c0_entrylo0(pte_val(*ptep++) >> 6);
- write_c0_entrylo1(pte_val(*ptep) >> 6);
+ write_c0_entrylo0(pte_to_entrylo(pte_val(*ptep++)));
+ write_c0_entrylo1(pte_to_entrylo(pte_val(*ptep)));
#endif
mtc0_tlbw_hazard();
if (idx < 0)
@@ -337,40 +337,6 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
EXIT_CRITICAL(flags);
}
-#if 0
-static void r4k_update_mmu_cache_hwbug(struct vm_area_struct * vma,
- unsigned long address, pte_t pte)
-{
- unsigned long flags;
- unsigned int asid;
- pgd_t *pgdp;
- pmd_t *pmdp;
- pte_t *ptep;
- int idx;
-
- ENTER_CRITICAL(flags);
- address &= (PAGE_MASK << 1);
- asid = read_c0_entryhi() & ASID_MASK;
- write_c0_entryhi(address | asid);
- pgdp = pgd_offset(vma->vm_mm, address);
- mtc0_tlbw_hazard();
- tlb_probe();
- tlb_probe_hazard();
- pmdp = pmd_offset(pgdp, address);
- idx = read_c0_index();
- ptep = pte_offset_map(pmdp, address);
- write_c0_entrylo0(pte_val(*ptep++) >> 6);
- write_c0_entrylo1(pte_val(*ptep) >> 6);
- mtc0_tlbw_hazard();
- if (idx < 0)
- tlb_write_random();
- else
- tlb_write_indexed();
- tlbw_use_hazard();
- EXIT_CRITICAL(flags);
-}
-#endif
-
void __init add_wired_entry(unsigned long entrylo0, unsigned long entrylo1,
unsigned long entryhi, unsigned long pagemask)
{
@@ -447,34 +413,6 @@ out:
return ret;
}
-static void __cpuinit probe_tlb(unsigned long config)
-{
- struct cpuinfo_mips *c = &current_cpu_data;
- unsigned int reg;
-
- /*
- * If this isn't a MIPS32 / MIPS64 compliant CPU. Config 1 register
- * is not supported, we assume R4k style. Cpu probing already figured
- * out the number of tlb entries.
- */
- if ((c->processor_id & 0xff0000) == PRID_COMP_LEGACY)
- return;
-#ifdef CONFIG_MIPS_MT_SMTC
- /*
- * If TLB is shared in SMTC system, total size already
- * has been calculated and written into cpu_data tlbsize
- */
- if((smtc_status & SMTC_TLB_SHARED) == SMTC_TLB_SHARED)
- return;
-#endif /* CONFIG_MIPS_MT_SMTC */
-
- reg = read_c0_config1();
- if (!((config >> 7) & 3))
- panic("No TLB present");
-
- c->tlbsize = ((reg >> 25) & 0x3f) + 1;
-}
-
static int __cpuinitdata ntlb;
static int __init set_ntlb(char *str)
{
@@ -486,8 +424,6 @@ __setup("ntlb=", set_ntlb);
void __cpuinit tlb_init(void)
{
- unsigned int config = read_c0_config();
-
/*
* You should never change this register:
* - On R4600 1.7 the tlbp never hits for pages smaller than
@@ -495,13 +431,25 @@ void __cpuinit tlb_init(void)
* - The entire mm handling assumes the c0_pagemask register to
* be set to fixed-size pages.
*/
- probe_tlb(config);
write_c0_pagemask(PM_DEFAULT_MASK);
write_c0_wired(0);
if (current_cpu_type() == CPU_R10000 ||
current_cpu_type() == CPU_R12000 ||
current_cpu_type() == CPU_R14000)
write_c0_framemask(0);
+
+ if (kernel_uses_smartmips_rixi) {
+ /*
+ * Enable the no read, no exec bits, and enable large virtual
+ * address.
+ */
+ u32 pg = PG_RIE | PG_XIE;
+#ifdef CONFIG_64BIT
+ pg |= PG_ELPA;
+#endif
+ write_c0_pagegrain(pg);
+ }
+
temp_tlb_entry = current_cpu_data.tlbsize - 1;
/* From this point on the ARC firmware is dead. */
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