diff options
Diffstat (limited to 'arch/sparc/mm/init_64.c')
| -rw-r--r-- | arch/sparc/mm/init_64.c | 104 |
1 files changed, 65 insertions, 39 deletions
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 445369132e03..696bb095e0fc 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -1660,10 +1660,11 @@ static void __init sun4v_ktsb_init(void) ((unsigned long)&swapper_4m_tsb[0] - KERNBASE)); ktsb_descr[1].pgsz_idx = HV_PGSZ_IDX_4MB; - ktsb_descr[1].pgsz_mask = (HV_PGSZ_MASK_4MB | - HV_PGSZ_MASK_256MB); - if (sun4v_chip_type == SUN4V_CHIP_NIAGARA4) - ktsb_descr[1].pgsz_mask |= HV_PGSZ_MASK_2GB; + ktsb_descr[1].pgsz_mask = ((HV_PGSZ_MASK_4MB | + HV_PGSZ_MASK_256MB | + HV_PGSZ_MASK_2GB | + HV_PGSZ_MASK_16GB) & + cpu_pgsz_mask); ktsb_descr[1].assoc = 1; ktsb_descr[1].num_ttes = KERNEL_TSB4M_NENTRIES; ktsb_descr[1].ctx_idx = 0; @@ -1686,6 +1687,47 @@ void __cpuinit sun4v_ktsb_register(void) } } +static void __init sun4u_linear_pte_xor_finalize(void) +{ +#ifndef CONFIG_DEBUG_PAGEALLOC + /* This is where we would add Panther support for + * 32MB and 256MB pages. + */ +#endif +} + +static void __init sun4v_linear_pte_xor_finalize(void) +{ +#ifndef CONFIG_DEBUG_PAGEALLOC + if (cpu_pgsz_mask & HV_PGSZ_MASK_256MB) { + kern_linear_pte_xor[1] = (_PAGE_VALID | _PAGE_SZ256MB_4V) ^ + 0xfffff80000000000UL; + kern_linear_pte_xor[1] |= (_PAGE_CP_4V | _PAGE_CV_4V | + _PAGE_P_4V | _PAGE_W_4V); + } else { + kern_linear_pte_xor[1] = kern_linear_pte_xor[0]; + } + + if (cpu_pgsz_mask & HV_PGSZ_MASK_2GB) { + kern_linear_pte_xor[2] = (_PAGE_VALID | _PAGE_SZ2GB_4V) ^ + 0xfffff80000000000UL; + kern_linear_pte_xor[2] |= (_PAGE_CP_4V | _PAGE_CV_4V | + _PAGE_P_4V | _PAGE_W_4V); + } else { + kern_linear_pte_xor[2] = kern_linear_pte_xor[1]; + } + + if (cpu_pgsz_mask & HV_PGSZ_MASK_16GB) { + kern_linear_pte_xor[3] = (_PAGE_VALID | _PAGE_SZ16GB_4V) ^ + 0xfffff80000000000UL; + kern_linear_pte_xor[3] |= (_PAGE_CP_4V | _PAGE_CV_4V | + _PAGE_P_4V | _PAGE_W_4V); + } else { + kern_linear_pte_xor[3] = kern_linear_pte_xor[2]; + } +#endif +} + /* paging_init() sets up the page tables */ static unsigned long last_valid_pfn; @@ -1745,10 +1787,8 @@ void __init paging_init(void) ktsb_phys_patch(); } - if (tlb_type == hypervisor) { + if (tlb_type == hypervisor) sun4v_patch_tlb_handlers(); - sun4v_ktsb_init(); - } /* Find available physical memory... * @@ -1807,9 +1847,6 @@ void __init paging_init(void) __flush_tlb_all(); - if (tlb_type == hypervisor) - sun4v_ktsb_register(); - prom_build_devicetree(); of_populate_present_mask(); #ifndef CONFIG_SMP @@ -1823,6 +1860,11 @@ void __init paging_init(void) mdesc_fill_in_cpu_data(cpu_all_mask); #endif mdesc_get_page_sizes(cpu_all_mask, &cpu_pgsz_mask); + + sun4v_linear_pte_xor_finalize(); + + sun4v_ktsb_init(); + sun4v_ktsb_register(); } else { unsigned long impl, ver; @@ -1834,8 +1876,19 @@ void __init paging_init(void) if (impl == PANTHER_IMPL) cpu_pgsz_mask |= (HV_PGSZ_MASK_32MB | HV_PGSZ_MASK_256MB); + + sun4u_linear_pte_xor_finalize(); } + /* Flush the TLBs and the 4M TSB so that the updated linear + * pte XOR settings are realized for all mappings. + */ + __flush_tlb_all(); +#ifndef CONFIG_DEBUG_PAGEALLOC + memset(swapper_4m_tsb, 0x40, sizeof(swapper_4m_tsb)); +#endif + __flush_tlb_all(); + /* Setup bootmem... */ last_valid_pfn = end_pfn = bootmem_init(phys_base); @@ -2230,7 +2283,6 @@ static void __init sun4u_pgprot_init(void) kern_linear_pte_xor[0] |= (_PAGE_CP_4U | _PAGE_CV_4U | _PAGE_P_4U | _PAGE_W_4U); - /* XXX Should use 256MB on Panther. XXX */ for (i = 1; i < 4; i++) kern_linear_pte_xor[i] = kern_linear_pte_xor[0]; @@ -2280,34 +2332,8 @@ static void __init sun4v_pgprot_init(void) kern_linear_pte_xor[0] |= (_PAGE_CP_4V | _PAGE_CV_4V | _PAGE_P_4V | _PAGE_W_4V); -#ifdef CONFIG_DEBUG_PAGEALLOC - kern_linear_pte_xor[1] = (_PAGE_VALID | _PAGE_SZBITS_4V) ^ - 0xfffff80000000000UL; -#else - kern_linear_pte_xor[1] = (_PAGE_VALID | _PAGE_SZ256MB_4V) ^ - 0xfffff80000000000UL; -#endif - kern_linear_pte_xor[1] |= (_PAGE_CP_4V | _PAGE_CV_4V | - _PAGE_P_4V | _PAGE_W_4V); - - i = 2; - - if (sun4v_chip_type == SUN4V_CHIP_NIAGARA4) { -#ifdef CONFIG_DEBUG_PAGEALLOC - kern_linear_pte_xor[2] = (_PAGE_VALID | _PAGE_SZBITS_4V) ^ - 0xfffff80000000000UL; -#else - kern_linear_pte_xor[2] = (_PAGE_VALID | _PAGE_SZ2GB_4V) ^ - 0xfffff80000000000UL; -#endif - kern_linear_pte_xor[2] |= (_PAGE_CP_4V | _PAGE_CV_4V | - _PAGE_P_4V | _PAGE_W_4V); - - i = 3; - } - - for (; i < 4; i++) - kern_linear_pte_xor[i] = kern_linear_pte_xor[i - 1]; + for (i = 1; i < 4; i++) + kern_linear_pte_xor[i] = kern_linear_pte_xor[0]; pg_iobits = (_PAGE_VALID | _PAGE_PRESENT_4V | __DIRTY_BITS_4V | __ACCESS_BITS_4V | _PAGE_E_4V); |