diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/sparc/mm/srmmu.c | 132 |
1 files changed, 64 insertions, 68 deletions
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index 533143be9711..4b00f6982a97 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -136,8 +136,8 @@ void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep) } } -/* Find an entry in the third-level page table.. */ -pte_t *pte_offset_kernel(pmd_t * dir, unsigned long address) +/* Find an entry in the third-level page table.. */ +pte_t *pte_offset_kernel(pmd_t *dir, unsigned long address) { void *pte; @@ -166,7 +166,7 @@ static unsigned long __srmmu_get_nocache(int size, int align) BUG_ON(align > SRMMU_NOCACHE_ALIGN_MAX); offset = bit_map_string_get(&srmmu_nocache_map, - size >> SRMMU_NOCACHE_BITMAP_SHIFT, + size >> SRMMU_NOCACHE_BITMAP_SHIFT, align >> SRMMU_NOCACHE_BITMAP_SHIFT); if (offset == -1) { printk("srmmu: out of nocache %d: %d/%d\n", @@ -199,7 +199,7 @@ void srmmu_free_nocache(unsigned long vaddr, int size) vaddr, (unsigned long)SRMMU_NOCACHE_VADDR); BUG(); } - if (vaddr+size > srmmu_nocache_end) { + if (vaddr + size > srmmu_nocache_end) { printk("Vaddr %lx is bigger than nocache end 0x%lx\n", vaddr, srmmu_nocache_end); BUG(); @@ -212,7 +212,7 @@ void srmmu_free_nocache(unsigned long vaddr, int size) printk("Size 0x%x is too small\n", size); BUG(); } - if (vaddr & (size-1)) { + if (vaddr & (size - 1)) { printk("Vaddr %lx is not aligned to size 0x%x\n", vaddr, size); BUG(); } @@ -330,7 +330,7 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) if ((pte = (unsigned long)pte_alloc_one_kernel(mm, address)) == 0) return NULL; - page = pfn_to_page( __nocache_pa(pte) >> PAGE_SHIFT ); + page = pfn_to_page(__nocache_pa(pte) >> PAGE_SHIFT); pgtable_page_ctor(page); return page; } @@ -355,7 +355,7 @@ static inline void alloc_context(struct mm_struct *old_mm, struct mm_struct *mm) struct ctx_list *ctxp; ctxp = ctx_free.next; - if(ctxp != &ctx_free) { + if (ctxp != &ctx_free) { remove_from_ctx_list(ctxp); add_to_used_ctxlist(ctxp); mm->context = ctxp->ctx_number; @@ -363,9 +363,9 @@ static inline void alloc_context(struct mm_struct *old_mm, struct mm_struct *mm) return; } ctxp = ctx_used.next; - if(ctxp->ctx_mm == old_mm) + if (ctxp->ctx_mm == old_mm) ctxp = ctxp->next; - if(ctxp == &ctx_used) + if (ctxp == &ctx_used) panic("out of mmu contexts"); flush_cache_mm(ctxp->ctx_mm); flush_tlb_mm(ctxp->ctx_mm); @@ -389,7 +389,7 @@ static inline void free_context(int context) void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, struct task_struct *tsk) { - if(mm->context == NO_CONTEXT) { + if (mm->context == NO_CONTEXT) { spin_lock(&srmmu_context_spinlock); alloc_context(old_mm, mm); spin_unlock(&srmmu_context_spinlock); @@ -407,7 +407,7 @@ void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, /* Low level IO area allocation on the SRMMU. */ static inline void srmmu_mapioaddr(unsigned long physaddr, - unsigned long virt_addr, int bus_type) + unsigned long virt_addr, int bus_type) { pgd_t *pgdp; pmd_t *pmdp; @@ -420,8 +420,7 @@ static inline void srmmu_mapioaddr(unsigned long physaddr, ptep = pte_offset_kernel(pmdp, virt_addr); tmp = (physaddr >> 4) | SRMMU_ET_PTE; - /* - * I need to test whether this is consistent over all + /* I need to test whether this is consistent over all * sun4m's. The bus_type represents the upper 4 bits of * 36-bit physical address on the I/O space lines... */ @@ -591,7 +590,7 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned long start, pmd_t *pmdp; pte_t *ptep; - while(start < end) { + while (start < end) { pgdp = pgd_offset_k(start); if (pgd_none(*(pgd_t *)__nocache_fix(pgdp))) { pmdp = (pmd_t *) __srmmu_get_nocache( @@ -602,7 +601,7 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned long start, pgd_set(__nocache_fix(pgdp), pmdp); } pmdp = pmd_offset(__nocache_fix(pgdp), start); - if(srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) { + if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) { ptep = (pte_t *)__srmmu_get_nocache(PTE_SIZE, PTE_SIZE); if (ptep == NULL) early_pgtable_allocfail("pte"); @@ -622,7 +621,7 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long start, pmd_t *pmdp; pte_t *ptep; - while(start < end) { + while (start < end) { pgdp = pgd_offset_k(start); if (pgd_none(*pgdp)) { pmdp = (pmd_t *)__srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE); @@ -632,7 +631,7 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long start, pgd_set(pgdp, pmdp); } pmdp = pmd_offset(pgdp, start); - if(srmmu_pmd_none(*pmdp)) { + if (srmmu_pmd_none(*pmdp)) { ptep = (pte_t *) __srmmu_get_nocache(PTE_SIZE, PTE_SIZE); if (ptep == NULL) @@ -677,32 +676,32 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start, int what = 0; /* 0 = normal-pte, 1 = pmd-level pte, 2 = pgd-level pte */ unsigned long prompte; - while(start <= end) { + while (start <= end) { if (start == 0) break; /* probably wrap around */ - if(start == 0xfef00000) + if (start == 0xfef00000) start = KADB_DEBUGGER_BEGVM; - if(!(prompte = srmmu_probe(start))) { + if (!(prompte = srmmu_probe(start))) { start += PAGE_SIZE; continue; } - + /* A red snapper, see what it really is. */ what = 0; - - if(!(start & ~(SRMMU_REAL_PMD_MASK))) { - if(srmmu_probe((start-PAGE_SIZE) + SRMMU_REAL_PMD_SIZE) == prompte) + + if (!(start & ~(SRMMU_REAL_PMD_MASK))) { + if (srmmu_probe((start - PAGE_SIZE) + SRMMU_REAL_PMD_SIZE) == prompte) what = 1; } - - if(!(start & ~(SRMMU_PGDIR_MASK))) { - if(srmmu_probe((start-PAGE_SIZE) + SRMMU_PGDIR_SIZE) == + + if (!(start & ~(SRMMU_PGDIR_MASK))) { + if (srmmu_probe((start-PAGE_SIZE) + SRMMU_PGDIR_SIZE) == prompte) what = 2; } - + pgdp = pgd_offset_k(start); - if(what == 2) { + if (what == 2) { *(pgd_t *)__nocache_fix(pgdp) = __pgd(prompte); start += SRMMU_PGDIR_SIZE; continue; @@ -715,17 +714,15 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start, pgd_set(__nocache_fix(pgdp), pmdp); } pmdp = pmd_offset(__nocache_fix(pgdp), start); - if(srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) { - ptep = (pte_t *) __srmmu_get_nocache(PTE_SIZE, - PTE_SIZE); + if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) { + ptep = (pte_t *)__srmmu_get_nocache(PTE_SIZE, PTE_SIZE); if (ptep == NULL) early_pgtable_allocfail("pte"); memset(__nocache_fix(ptep), 0, PTE_SIZE); pmd_set(__nocache_fix(pmdp), ptep); } - if(what == 1) { - /* - * We bend the rule where all 16 PTPs in a pmd_t point + if (what == 1) { + /* We bend the rule where all 16 PTPs in a pmd_t point * inside the same PTE page, and we leak a perfectly * good hardware PTE piece. Alternatives seem worse. */ @@ -765,11 +762,11 @@ static unsigned long __init map_spbank(unsigned long vbase, int sp_entry) if (vstart < min_vaddr || vstart >= max_vaddr) return vstart; - + if (vend > max_vaddr || vend < min_vaddr) vend = max_vaddr; - while(vstart < vend) { + while (vstart < vend) { do_large_mapping(vstart, pstart); vstart += SRMMU_PGDIR_SIZE; pstart += SRMMU_PGDIR_SIZE; } @@ -814,9 +811,9 @@ void __init srmmu_paging_init(void) /* Find the number of contexts on the srmmu. */ cpunode = prom_getchild(prom_root_node); num_contexts = 0; - while(cpunode != 0) { + while (cpunode != 0) { prom_getstring(cpunode, "device_type", node_str, sizeof(node_str)); - if(!strcmp(node_str, "cpu")) { + if (!strcmp(node_str, "cpu")) { num_contexts = prom_getintdefault(cpunode, "mmu-nctx", 0x8); break; } @@ -824,7 +821,7 @@ void __init srmmu_paging_init(void) } } - if(!num_contexts) { + if (!num_contexts) { prom_printf("Something wrong, can't find cpu node in paging_init.\n"); prom_halt(); } @@ -834,14 +831,14 @@ void __init srmmu_paging_init(void) srmmu_nocache_calcsize(); srmmu_nocache_init(); - srmmu_inherit_prom_mappings(0xfe400000,(LINUX_OPPROM_ENDVM-PAGE_SIZE)); + srmmu_inherit_prom_mappings(0xfe400000, (LINUX_OPPROM_ENDVM-PAGE_SIZE)); map_kernel(); /* ctx table has to be physically aligned to its size */ srmmu_context_table = (ctxd_t *)__srmmu_get_nocache(num_contexts*sizeof(ctxd_t), num_contexts*sizeof(ctxd_t)); srmmu_ctx_table_phys = (ctxd_t *)__nocache_pa((unsigned long)srmmu_context_table); - for(i = 0; i < num_contexts; i++) + for (i = 0; i < num_contexts; i++) srmmu_ctxd_set((ctxd_t *)__nocache_fix(&srmmu_context_table[i]), srmmu_swapper_pg_dir); flush_cache_all(); @@ -897,7 +894,7 @@ void __init srmmu_paging_init(void) void mmu_info(struct seq_file *m) { - seq_printf(m, + seq_printf(m, "MMU type\t: %s\n" "contexts\t: %d\n" "nocache total\t: %ld\n" @@ -911,7 +908,7 @@ void mmu_info(struct seq_file *m) void destroy_context(struct mm_struct *mm) { - if(mm->context != NO_CONTEXT) { + if (mm->context != NO_CONTEXT) { flush_cache_mm(mm); srmmu_ctxd_set(&srmmu_context_table[mm->context], srmmu_swapper_pg_dir); flush_tlb_mm(mm); @@ -941,13 +938,12 @@ static void __init init_vac_layout(void) #endif nd = prom_getchild(prom_root_node); - while((nd = prom_getsibling(nd)) != 0) { + while ((nd = prom_getsibling(nd)) != 0) { prom_getstring(nd, "device_type", node_str, sizeof(node_str)); - if(!strcmp(node_str, "cpu")) { + if (!strcmp(node_str, "cpu")) { vac_line_size = prom_getint(nd, "cache-line-size"); if (vac_line_size == -1) { - prom_printf("can't determine cache-line-size, " - "halting.\n"); + prom_printf("can't determine cache-line-size, halting.\n"); prom_halt(); } cache_lines = prom_getint(nd, "cache-nlines"); @@ -958,9 +954,9 @@ static void __init init_vac_layout(void) vac_cache_size = cache_lines * vac_line_size; #ifdef CONFIG_SMP - if(vac_cache_size > max_size) + if (vac_cache_size > max_size) max_size = vac_cache_size; - if(vac_line_size < min_line_size) + if (vac_line_size < min_line_size) min_line_size = vac_line_size; //FIXME: cpus not contiguous!! cpu++; @@ -971,7 +967,7 @@ static void __init init_vac_layout(void) #endif } } - if(nd == 0) { + if (nd == 0) { prom_printf("No CPU nodes found, halting.\n"); prom_halt(); } @@ -1082,7 +1078,7 @@ static void __init init_swift(void) "=r" (swift_rev) : "r" (SWIFT_MASKID_ADDR), "i" (ASI_M_BYPASS)); srmmu_name = "Fujitsu Swift"; - switch(swift_rev) { + switch (swift_rev) { case 0x11: case 0x20: case 0x23: @@ -1222,10 +1218,11 @@ static void __cpuinit poke_turbosparc(void) /* Clear any crap from the cache or else... */ turbosparc_flush_cache_all(); - mreg &= ~(TURBOSPARC_ICENABLE | TURBOSPARC_DCENABLE); /* Temporarily disable I & D caches */ + /* Temporarily disable I & D caches */ + mreg &= ~(TURBOSPARC_ICENABLE | TURBOSPARC_DCENABLE); mreg &= ~(TURBOSPARC_PCENABLE); /* Don't check parity */ srmmu_set_mmureg(mreg); - + ccreg = turbosparc_get_ccreg(); #ifdef TURBOSPARC_WRITEBACK @@ -1248,7 +1245,7 @@ static void __cpuinit poke_turbosparc(void) default: ccreg |= (TURBOSPARC_SCENABLE); } - turbosparc_set_ccreg (ccreg); + turbosparc_set_ccreg(ccreg); mreg |= (TURBOSPARC_ICENABLE | TURBOSPARC_DCENABLE); /* I & D caches on */ mreg |= (TURBOSPARC_ICSNOOP); /* Icache snooping on */ @@ -1342,7 +1339,7 @@ static void __cpuinit poke_viking(void) unsigned long bpreg; mreg &= ~(VIKING_TCENABLE); - if(smp_catch++) { + if (smp_catch++) { /* Must disable mixed-cmd mode here for other cpu's. */ bpreg = viking_get_bpreg(); bpreg &= ~(VIKING_ACTION_MIX); @@ -1411,7 +1408,7 @@ static void __init init_viking(void) unsigned long mreg = srmmu_get_mmureg(); /* Ahhh, the viking. SRMMU VLSI abortion number two... */ - if(mreg & VIKING_MMODE) { + if (mreg & VIKING_MMODE) { srmmu_name = "TI Viking"; viking_mxcc_present = 0; msi_set_sync(); @@ -1467,8 +1464,8 @@ static void __init get_srmmu_type(void) } /* Second, check for HyperSparc or Cypress. */ - if(mod_typ == 1) { - switch(mod_rev) { + if (mod_typ == 1) { + switch (mod_rev) { case 7: /* UP or MP Hypersparc */ init_hypersparc(); @@ -1488,9 +1485,8 @@ static void __init get_srmmu_type(void) } return; } - - /* - * Now Fujitsu TurboSparc. It might happen that it is + + /* Now Fujitsu TurboSparc. It might happen that it is * in Swift emulation mode, so we will check later... */ if (psr_typ == 0 && psr_vers == 5) { @@ -1499,15 +1495,15 @@ static void __init get_srmmu_type(void) } /* Next check for Fujitsu Swift. */ - if(psr_typ == 0 && psr_vers == 4) { + if (psr_typ == 0 && psr_vers == 4) { phandle cpunode; char node_str[128]; /* Look if it is not a TurboSparc emulating Swift... */ cpunode = prom_getchild(prom_root_node); - while((cpunode = prom_getsibling(cpunode)) != 0) { + while ((cpunode = prom_getsibling(cpunode)) != 0) { prom_getstring(cpunode, "device_type", node_str, sizeof(node_str)); - if(!strcmp(node_str, "cpu")) { + if (!strcmp(node_str, "cpu")) { if (!prom_getintdefault(cpunode, "psr-implementation", 1) && prom_getintdefault(cpunode, "psr-version", 1) == 5) { init_turbosparc(); @@ -1516,13 +1512,13 @@ static void __init get_srmmu_type(void) break; } } - + init_swift(); return; } /* Now the Viking family of srmmu. */ - if(psr_typ == 4 && + if (psr_typ == 4 && ((psr_vers == 0) || ((psr_vers == 1) && (mod_typ == 0) && (mod_rev == 0)))) { init_viking(); @@ -1530,7 +1526,7 @@ static void __init get_srmmu_type(void) } /* Finally the Tsunami. */ - if(psr_typ == 4 && psr_vers == 1 && (mod_typ || mod_rev)) { + if (psr_typ == 4 && psr_vers == 1 && (mod_typ || mod_rev)) { init_tsunami(); return; } |