diff options
Diffstat (limited to 'arch/powerpc/mm/hash_utils_64.c')
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 83 |
1 files changed, 49 insertions, 34 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index d766d6ee33fe..26913d0c0bb0 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -265,9 +265,9 @@ static int __init htab_dt_scan_seg_sizes(unsigned long node, const char *uname, int depth, void *data) { - char *type = of_get_flat_dt_prop(node, "device_type", NULL); - __be32 *prop; - unsigned long size = 0; + const char *type = of_get_flat_dt_prop(node, "device_type", NULL); + const __be32 *prop; + int size = 0; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) @@ -320,9 +320,9 @@ static int __init htab_dt_scan_page_sizes(unsigned long node, const char *uname, int depth, void *data) { - char *type = of_get_flat_dt_prop(node, "device_type", NULL); - __be32 *prop; - unsigned long size = 0; + const char *type = of_get_flat_dt_prop(node, "device_type", NULL); + const __be32 *prop; + int size = 0; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) @@ -402,9 +402,9 @@ static int __init htab_dt_scan_page_sizes(unsigned long node, static int __init htab_dt_scan_hugepage_blocks(unsigned long node, const char *uname, int depth, void *data) { - char *type = of_get_flat_dt_prop(node, "device_type", NULL); - __be64 *addr_prop; - __be32 *page_count_prop; + const char *type = of_get_flat_dt_prop(node, "device_type", NULL); + const __be64 *addr_prop; + const __be32 *page_count_prop; unsigned int expected_pages; long unsigned int phys_addr; long unsigned int block_size; @@ -445,6 +445,24 @@ static void mmu_psize_set_default_penc(void) mmu_psize_defs[bpsize].penc[apsize] = -1; } +#ifdef CONFIG_PPC_64K_PAGES + +static bool might_have_hea(void) +{ + /* + * The HEA ethernet adapter requires awareness of the + * GX bus. Without that awareness we can easily assume + * we will never see an HEA ethernet device. + */ +#ifdef CONFIG_IBMEBUS + return !cpu_has_feature(CPU_FTR_ARCH_207S); +#else + return false; +#endif +} + +#endif /* #ifdef CONFIG_PPC_64K_PAGES */ + static void __init htab_init_page_sizes(void) { int rc; @@ -499,10 +517,11 @@ static void __init htab_init_page_sizes(void) mmu_linear_psize = MMU_PAGE_64K; if (mmu_has_feature(MMU_FTR_CI_LARGE_PAGE)) { /* - * Don't use 64k pages for ioremap on pSeries, since - * that would stop us accessing the HEA ethernet. + * When running on pSeries using 64k pages for ioremap + * would stop us accessing the HEA ethernet. So if we + * have the chance of ever seeing one, stay at 4k. */ - if (!machine_is(pseries)) + if (!might_have_hea() || !machine_is(pseries)) mmu_io_psize = MMU_PAGE_64K; } else mmu_ci_restrictions = 1; @@ -546,8 +565,8 @@ static int __init htab_dt_scan_pftsize(unsigned long node, const char *uname, int depth, void *data) { - char *type = of_get_flat_dt_prop(node, "device_type", NULL); - __be32 *prop; + const char *type = of_get_flat_dt_prop(node, "device_type", NULL); + const __be32 *prop; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) @@ -603,47 +622,43 @@ int remove_section_mapping(unsigned long start, unsigned long end) } #endif /* CONFIG_MEMORY_HOTPLUG */ -#define FUNCTION_TEXT(A) ((*(unsigned long *)(A))) +extern u32 htab_call_hpte_insert1[]; +extern u32 htab_call_hpte_insert2[]; +extern u32 htab_call_hpte_remove[]; +extern u32 htab_call_hpte_updatepp[]; +extern u32 ht64_call_hpte_insert1[]; +extern u32 ht64_call_hpte_insert2[]; +extern u32 ht64_call_hpte_remove[]; +extern u32 ht64_call_hpte_updatepp[]; static void __init htab_finish_init(void) { - extern unsigned int *htab_call_hpte_insert1; - extern unsigned int *htab_call_hpte_insert2; - extern unsigned int *htab_call_hpte_remove; - extern unsigned int *htab_call_hpte_updatepp; - #ifdef CONFIG_PPC_HAS_HASH_64K - extern unsigned int *ht64_call_hpte_insert1; - extern unsigned int *ht64_call_hpte_insert2; - extern unsigned int *ht64_call_hpte_remove; - extern unsigned int *ht64_call_hpte_updatepp; - patch_branch(ht64_call_hpte_insert1, - FUNCTION_TEXT(ppc_md.hpte_insert), + ppc_function_entry(ppc_md.hpte_insert), BRANCH_SET_LINK); patch_branch(ht64_call_hpte_insert2, - FUNCTION_TEXT(ppc_md.hpte_insert), + ppc_function_entry(ppc_md.hpte_insert), BRANCH_SET_LINK); patch_branch(ht64_call_hpte_remove, - FUNCTION_TEXT(ppc_md.hpte_remove), + ppc_function_entry(ppc_md.hpte_remove), BRANCH_SET_LINK); patch_branch(ht64_call_hpte_updatepp, - FUNCTION_TEXT(ppc_md.hpte_updatepp), + ppc_function_entry(ppc_md.hpte_updatepp), BRANCH_SET_LINK); - #endif /* CONFIG_PPC_HAS_HASH_64K */ patch_branch(htab_call_hpte_insert1, - FUNCTION_TEXT(ppc_md.hpte_insert), + ppc_function_entry(ppc_md.hpte_insert), BRANCH_SET_LINK); patch_branch(htab_call_hpte_insert2, - FUNCTION_TEXT(ppc_md.hpte_insert), + ppc_function_entry(ppc_md.hpte_insert), BRANCH_SET_LINK); patch_branch(htab_call_hpte_remove, - FUNCTION_TEXT(ppc_md.hpte_remove), + ppc_function_entry(ppc_md.hpte_remove), BRANCH_SET_LINK); patch_branch(htab_call_hpte_updatepp, - FUNCTION_TEXT(ppc_md.hpte_updatepp), + ppc_function_entry(ppc_md.hpte_updatepp), BRANCH_SET_LINK); } |