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Diffstat (limited to 'arch/powerpc/mm/hash_utils_64.c')
-rw-r--r--arch/powerpc/mm/hash_utils_64.c40
1 files changed, 30 insertions, 10 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 22e474876133..a606504678bd 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -84,10 +84,11 @@
extern unsigned long dart_tablebase;
#endif /* CONFIG_U3_DART */
+static unsigned long _SDR1;
+struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];
+
hpte_t *htab_address;
unsigned long htab_hash_mask;
-unsigned long _SDR1;
-struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];
int mmu_linear_psize = MMU_PAGE_4K;
int mmu_virtual_psize = MMU_PAGE_4K;
#ifdef CONFIG_HUGETLB_PAGE
@@ -165,7 +166,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
* normal insert callback here.
*/
#ifdef CONFIG_PPC_ISERIES
- if (systemcfg->platform == PLATFORM_ISERIES_LPAR)
+ if (_machine == PLATFORM_ISERIES_LPAR)
ret = iSeries_hpte_insert(hpteg, va,
virt_to_abs(paddr),
tmp_mode,
@@ -174,7 +175,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
else
#endif
#ifdef CONFIG_PPC_PSERIES
- if (systemcfg->platform & PLATFORM_LPAR)
+ if (_machine & PLATFORM_LPAR)
ret = pSeries_lpar_hpte_insert(hpteg, va,
virt_to_abs(paddr),
tmp_mode,
@@ -293,7 +294,7 @@ static void __init htab_init_page_sizes(void)
* Not in the device-tree, let's fallback on known size
* list for 16M capable GP & GR
*/
- if ((systemcfg->platform != PLATFORM_ISERIES_LPAR) &&
+ if ((_machine != PLATFORM_ISERIES_LPAR) &&
cpu_has_feature(CPU_FTR_16M_PAGE))
memcpy(mmu_psize_defs, mmu_psize_defaults_gp,
sizeof(mmu_psize_defaults_gp));
@@ -364,7 +365,7 @@ static int __init htab_dt_scan_pftsize(unsigned long node,
static unsigned long __init htab_get_table_size(void)
{
- unsigned long rnd_mem_size, pteg_count;
+ unsigned long mem_size, rnd_mem_size, pteg_count;
/* If hash size isn't already provided by the platform, we try to
* retreive it from the device-tree. If it's not there neither, we
@@ -376,8 +377,9 @@ static unsigned long __init htab_get_table_size(void)
return 1UL << ppc64_pft_size;
/* round mem_size up to next power of 2 */
- rnd_mem_size = 1UL << __ilog2(systemcfg->physicalMemorySize);
- if (rnd_mem_size < systemcfg->physicalMemorySize)
+ mem_size = lmb_phys_mem_size();
+ rnd_mem_size = 1UL << __ilog2(mem_size);
+ if (rnd_mem_size < mem_size)
rnd_mem_size <<= 1;
/* # pages / 2 */
@@ -386,6 +388,15 @@ static unsigned long __init htab_get_table_size(void)
return pteg_count << 7;
}
+#ifdef CONFIG_MEMORY_HOTPLUG
+void create_section_mapping(unsigned long start, unsigned long end)
+{
+ BUG_ON(htab_bolt_mapping(start, end, start,
+ _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX,
+ mmu_linear_psize));
+}
+#endif /* CONFIG_MEMORY_HOTPLUG */
+
void __init htab_initialize(void)
{
unsigned long table, htab_size_bytes;
@@ -410,7 +421,7 @@ void __init htab_initialize(void)
htab_hash_mask = pteg_count - 1;
- if (systemcfg->platform & PLATFORM_LPAR) {
+ if (platform_is_lpar()) {
/* Using a hypervisor which owns the htab */
htab_address = NULL;
_SDR1 = 0;
@@ -431,6 +442,9 @@ void __init htab_initialize(void)
/* Initialize the HPT with no entries */
memset((void *)table, 0, htab_size_bytes);
+
+ /* Set SDR1 */
+ mtspr(SPRN_SDR1, _SDR1);
}
mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
@@ -500,6 +514,12 @@ void __init htab_initialize(void)
#undef KB
#undef MB
+void htab_initialize_secondary(void)
+{
+ if (!platform_is_lpar())
+ mtspr(SPRN_SDR1, _SDR1);
+}
+
/*
* Called by asm hashtable.S for doing lazy icache flush
*/
@@ -581,7 +601,7 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
/* Handle hugepage regions */
if (unlikely(in_hugepage_area(mm->context, ea))) {
DBG_LOW(" -> huge page !\n");
- return hash_huge_page(mm, access, ea, vsid, local);
+ return hash_huge_page(mm, access, ea, vsid, local, trap);
}
/* Get PTE and page size from page tables */