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Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/geom/geom_label/@/mips/nlm/hal/mmu.h |
/*- * Copyright 2003-2011 Netlogic Microsystems (Netlogic). All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY Netlogic Microsystems ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. * * NETLOGIC_BSD * $FreeBSD: release/9.1.0/sys/mips/nlm/hal/mmu.h 225394 2011-09-05 10:45:29Z jchandra $ */ #ifndef __XLP_MMU_H__ #define __XLP_MMU_H__ #include <mips/nlm/hal/mips-extns.h> static __inline__ uint32_t nlm_read_c0_config6(void) { uint32_t rv; __asm__ __volatile__ ( ".set push\n" ".set mips64\n" "mfc0 %0, $16, 6\n" ".set pop\n" : "=r" (rv)); return rv; } static __inline__ void nlm_write_c0_config6(uint32_t value) { __asm__ __volatile__ ( ".set push\n" ".set mips64\n" "mtc0 %0, $16, 6\n" ".set pop\n" : : "r" (value)); } static __inline__ uint32_t nlm_read_c0_config7(void) { uint32_t rv; __asm__ __volatile__ ( ".set push\n" ".set mips64\n" "mfc0 %0, $16, 7\n" ".set pop\n" : "=r" (rv)); return rv; } static __inline__ void nlm_write_c0_config7(uint32_t value) { __asm__ __volatile__ ( ".set push\n" ".set mips64\n" "mtc0 %0, $16, 7\n" ".set pop\n" : : "r" (value)); } /** * On power on reset, XLP comes up with 64 TLBs. * Large-variable-tlb's (ELVT) and extended TLB is disabled. * Enabling large-variable-tlb's sets up the standard * TLB size from 64 to 128 TLBs. * Enabling fixed TLB (EFT) sets up an additional 2048 tlbs. * ELVT + EFT = 128 + 2048 = 2176 TLB entries. * threads 64-entry-standard-tlb 128-entry-standard-tlb * per std-tlb-only| std+EFT | std-tlb-only| std+EFT * core | | | * -------------------------------------------------------- * 1 64 64+2048 128 128+2048 * 2 64 64+1024 64 64+1024 * 4 32 32+512 32 32+512 * * 1(G) 64 64+2048 128 128+2048 * 2(G) 128 128+2048 128 128+2048 * 4(G) 128 128+2048 128 128+2048 * (G) = Global mode */ /* en = 1 to enable * en = 0 to disable */ static __inline__ void nlm_large_variable_tlb_en (int en) { unsigned int val; val = nlm_read_c0_config6(); val |= (en << 5); nlm_write_c0_config6(val); return; } /* en = 1 to enable * en = 0 to disable */ static __inline__ void nlm_pagewalker_en(int en) { unsigned int val; val = nlm_read_c0_config6(); val |= (en << 3); nlm_write_c0_config6(val); return; } /* en = 1 to enable * en = 0 to disable */ static __inline__ void nlm_extended_tlb_en(int en) { unsigned int val; val = nlm_read_c0_config6(); val |= (en << 2); nlm_write_c0_config6(val); return; } static __inline__ int nlm_get_num_combined_tlbs(void) { return (((nlm_read_c0_config6() >> 16) & 0xffff) + 1); } /* get number of variable TLB entries */ static __inline__ int nlm_get_num_vtlbs(void) { return (((nlm_read_c0_config6() >> 6) & 0x3ff) + 1); } static __inline__ void nlm_setup_extended_pagemask(int mask) { nlm_write_c0_config7(mask); } #endif