14becef1dSAtsushi Nemoto /* 24becef1dSAtsushi Nemoto * Dump R3000 TLB for debugging purposes. 34becef1dSAtsushi Nemoto * 44becef1dSAtsushi Nemoto * Copyright (C) 1994, 1995 by Waldorf Electronics, written by Ralf Baechle. 54becef1dSAtsushi Nemoto * Copyright (C) 1999 by Silicon Graphics, Inc. 64becef1dSAtsushi Nemoto * Copyright (C) 1999 by Harald Koerfgen 74becef1dSAtsushi Nemoto */ 84becef1dSAtsushi Nemoto #include <linux/kernel.h> 94becef1dSAtsushi Nemoto #include <linux/mm.h> 104becef1dSAtsushi Nemoto 114becef1dSAtsushi Nemoto #include <asm/mipsregs.h> 1280e8bd26SIsamu Mogi #include <asm/mmu_context.h> 134becef1dSAtsushi Nemoto #include <asm/page.h> 144becef1dSAtsushi Nemoto #include <asm/pgtable.h> 1540df3831SAtsushi Nemoto #include <asm/tlbdebug.h> 164becef1dSAtsushi Nemoto 174becef1dSAtsushi Nemoto extern int r3k_have_wired_reg; /* defined in tlb-r3k.c */ 184becef1dSAtsushi Nemoto 1969ed25b8SAtsushi Nemoto static void dump_tlb(int first, int last) 204becef1dSAtsushi Nemoto { 214becef1dSAtsushi Nemoto int i; 224becef1dSAtsushi Nemoto unsigned int asid; 234becef1dSAtsushi Nemoto unsigned long entryhi, entrylo0; 244becef1dSAtsushi Nemoto 2580e8bd26SIsamu Mogi asid = read_c0_entryhi() & ASID_MASK; 264becef1dSAtsushi Nemoto 274becef1dSAtsushi Nemoto for (i = first; i <= last; i++) { 284becef1dSAtsushi Nemoto write_c0_index(i<<8); 294becef1dSAtsushi Nemoto __asm__ __volatile__( 304becef1dSAtsushi Nemoto ".set\tnoreorder\n\t" 314becef1dSAtsushi Nemoto "tlbr\n\t" 324becef1dSAtsushi Nemoto "nop\n\t" 334becef1dSAtsushi Nemoto ".set\treorder"); 344becef1dSAtsushi Nemoto entryhi = read_c0_entryhi(); 354becef1dSAtsushi Nemoto entrylo0 = read_c0_entrylo0(); 364becef1dSAtsushi Nemoto 374becef1dSAtsushi Nemoto /* Unused entries have a virtual address of KSEG0. */ 3848269c78SJames Hogan if ((entryhi & PAGE_MASK) != KSEG0 && 3948269c78SJames Hogan (entrylo0 & R3K_ENTRYLO_G || 4048269c78SJames Hogan (entryhi & ASID_MASK) == asid)) { 414becef1dSAtsushi Nemoto /* 424becef1dSAtsushi Nemoto * Only print entries in use 434becef1dSAtsushi Nemoto */ 444becef1dSAtsushi Nemoto printk("Index: %2d ", i); 454becef1dSAtsushi Nemoto 464becef1dSAtsushi Nemoto printk("va=%08lx asid=%08lx" 474becef1dSAtsushi Nemoto " [pa=%06lx n=%d d=%d v=%d g=%d]", 48432d9ecbSIsamu Mogi entryhi & PAGE_MASK, 4980e8bd26SIsamu Mogi entryhi & ASID_MASK, 504becef1dSAtsushi Nemoto entrylo0 & PAGE_MASK, 51d7f5499dSJames Hogan (entrylo0 & R3K_ENTRYLO_N) ? 1 : 0, 52d7f5499dSJames Hogan (entrylo0 & R3K_ENTRYLO_D) ? 1 : 0, 53d7f5499dSJames Hogan (entrylo0 & R3K_ENTRYLO_V) ? 1 : 0, 54d7f5499dSJames Hogan (entrylo0 & R3K_ENTRYLO_G) ? 1 : 0); 554becef1dSAtsushi Nemoto } 564becef1dSAtsushi Nemoto } 574becef1dSAtsushi Nemoto printk("\n"); 584becef1dSAtsushi Nemoto 594becef1dSAtsushi Nemoto write_c0_entryhi(asid); 604becef1dSAtsushi Nemoto } 614becef1dSAtsushi Nemoto 624becef1dSAtsushi Nemoto void dump_tlb_all(void) 634becef1dSAtsushi Nemoto { 644becef1dSAtsushi Nemoto dump_tlb(0, current_cpu_data.tlbsize - 1); 654becef1dSAtsushi Nemoto } 66