diff options
Diffstat (limited to 'arch/sparc64/mm/init.c')
| -rw-r--r-- | arch/sparc64/mm/init.c | 86 |
1 files changed, 82 insertions, 4 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index 58dc224f9..68147d4d4 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -1,4 +1,4 @@ -/* $Id: init.c,v 1.146 2000/02/09 21:11:09 davem Exp $ +/* $Id: init.c,v 1.147 2000/03/03 23:48:44 davem Exp $ * arch/sparc64/mm/init.c * * Copyright (C) 1996-1999 David S. Miller (davem@caip.rutgers.edu) @@ -230,6 +230,14 @@ static void inherit_prom_mappings(void) /* Now fixup OBP's idea about where we really are mapped. */ prom_printf("Remapping the kernel... "); + + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + phys_page = spitfire_get_dtlb_data(63) & _PAGE_PADDR; phys_page += ((unsigned long)&prom_boot_page - (unsigned long)&empty_zero_page); @@ -252,11 +260,27 @@ static void inherit_prom_mappings(void) : "memory"); tte_vaddr = (unsigned long) &empty_zero_page; + + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + kern_locked_tte_data = tte_data = spitfire_get_dtlb_data(63); remap_func = (void *) ((unsigned long) &prom_remap - (unsigned long) &prom_boot_page); + + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + remap_func(spitfire_get_dtlb_data(63) & _PAGE_PADDR, (unsigned long) &empty_zero_page, prom_get_mmu_ihandle()); @@ -319,8 +343,16 @@ static void __flush_nucleus_vptes(void) /* Only DTLB must be checked for VPTE entries. */ for(i = 0; i < 63; i++) { - unsigned long tag = spitfire_get_dtlb_tag(i); + unsigned long tag; + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + + tag = spitfire_get_dtlb_tag(i); if(((tag & ~(PAGE_MASK)) == 0) && ((tag & (PAGE_MASK)) >= prom_reserved_base)) { __asm__ __volatile__("stxa %%g0, [%0] %1" @@ -436,10 +468,26 @@ void inherit_locked_prom_mappings(int save_p) for(i = 0; i < 63; i++) { unsigned long data; + + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + data = spitfire_get_dtlb_data(i); if((data & (_PAGE_L|_PAGE_VALID)) == (_PAGE_L|_PAGE_VALID)) { - unsigned long tag = spitfire_get_dtlb_tag(i); + unsigned long tag; + + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + tag = spitfire_get_dtlb_tag(i); if(save_p) { prom_dtlb[dtlb_seen].tlb_ent = i; prom_dtlb[dtlb_seen].tlb_tag = tag; @@ -459,10 +507,25 @@ void inherit_locked_prom_mappings(int save_p) for(i = 0; i < 63; i++) { unsigned long data; + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + data = spitfire_get_itlb_data(i); if((data & (_PAGE_L|_PAGE_VALID)) == (_PAGE_L|_PAGE_VALID)) { - unsigned long tag = spitfire_get_itlb_tag(i); + unsigned long tag; + + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + tag = spitfire_get_itlb_tag(i); if(save_p) { prom_itlb[itlb_seen].tlb_ent = i; prom_itlb[itlb_seen].tlb_tag = tag; @@ -544,6 +607,13 @@ void __flush_tlb_all(void) : "=r" (pstate) : "i" (PSTATE_IE)); for(i = 0; i < 64; i++) { + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + if(!(spitfire_get_dtlb_data(i) & _PAGE_L)) { __asm__ __volatile__("stxa %%g0, [%0] %1" : /* no outputs */ @@ -552,6 +622,14 @@ void __flush_tlb_all(void) spitfire_put_dtlb_data(i, 0x0UL); membar("#Sync"); } + + /* Spitfire Errata #32 workaround */ + __asm__ __volatile__("stxa %0, [%1] %2\n\t" + "flush %%g6" + : /* No outputs */ + : "r" (0), + "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); + if(!(spitfire_get_itlb_data(i) & _PAGE_L)) { __asm__ __volatile__("stxa %%g0, [%0] %1" : /* no outputs */ |