cvmx-core.c revision 210286
1/***********************license start*************** 2 * Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights 3 * reserved. 4 * 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * * Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * * Neither the name of Cavium Networks nor the names of 19 * its contributors may be used to endorse or promote products 20 * derived from this software without specific prior written 21 * permission. 22 * 23 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 24 * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS 25 * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH 26 * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY 27 * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT 28 * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES 29 * OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR 30 * PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET 31 * POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT 32 * OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU. 33 * 34 * 35 * For any questions regarding licensing please contact marketing@caviumnetworks.com 36 * 37 ***********************license end**************************************/ 38 39 40 41 42 43 44/** 45 * @file 46 * 47 * Module to support operations on core such as TLB config, etc. 48 * 49 * <hr>$Revision: 41586 $<hr> 50 * 51 */ 52 53#include "cvmx-config.h" 54#include "cvmx.h" 55#include "cvmx-core.h" 56 57 58/** 59 * Adds a wired TLB entry, and returns the index of the entry added. 60 * Parameters are written to TLB registers without further processing. 61 * 62 * @param hi HI register value 63 * @param lo0 lo0 register value 64 * @param lo1 lo1 register value 65 * @param page_mask pagemask register value 66 * 67 * @return Success: TLB index used (0-31) or (0-63) for OCTEON Plus 68 * Failure: -1 69 */ 70int cvmx_core_add_wired_tlb_entry(uint64_t hi, uint64_t lo0, uint64_t lo1, cvmx_tlb_pagemask_t page_mask) 71{ 72 uint32_t index; 73 uint32_t index_limit = 31; 74 75 if (!OCTEON_IS_MODEL(OCTEON_CN3XXX)) 76 { 77 index_limit=63; 78 } 79 80 CVMX_MF_TLB_WIRED(index); 81 if (index >= index_limit) 82 { 83 return(-1); 84 } 85 CVMX_MT_ENTRY_HIGH(hi); 86 CVMX_MT_ENTRY_LO_0(lo0); 87 CVMX_MT_ENTRY_LO_1(lo1); 88 CVMX_MT_PAGEMASK(page_mask); 89 CVMX_MT_TLB_INDEX(index); 90 CVMX_MT_TLB_WIRED(index + 1); 91 CVMX_EHB; 92 CVMX_TLBWI; 93 CVMX_EHB; 94 return(index); 95} 96 97 98 99/** 100 * Adds a fixed (wired) TLB mapping. Returns TLB index used or -1 on error. 101 * This is a wrapper around cvmx_core_add_wired_tlb_entry() 102 * 103 * @param vaddr Virtual address to map 104 * @param page0_addr page 0 physical address, with low 3 bits representing the DIRTY, VALID, and GLOBAL bits 105 * @param page1_addr page1 physical address, with low 3 bits representing the DIRTY, VALID, and GLOBAL bits 106 * @param page_mask page mask. 107 * 108 * @return Success: TLB index used (0-31) 109 * Failure: -1 110 */ 111int cvmx_core_add_fixed_tlb_mapping_bits(uint64_t vaddr, uint64_t page0_addr, uint64_t page1_addr, cvmx_tlb_pagemask_t page_mask) 112{ 113 114 if ((vaddr & (page_mask | 0x7ff)) 115 || ((page0_addr & ~0x7ULL) & ((page_mask | 0x7ff) >> 1)) 116 || ((page1_addr & ~0x7ULL) & ((page_mask | 0x7ff) >> 1))) 117 { 118 cvmx_dprintf("Error adding tlb mapping: invalid address alignment at vaddr: 0x%llx\n", (unsigned long long)vaddr); 119 return(-1); 120 } 121 122 123 return(cvmx_core_add_wired_tlb_entry(vaddr, 124 (page0_addr >> 6) | (page0_addr & 0x7), 125 (page1_addr >> 6) | (page1_addr & 0x7), 126 page_mask)); 127 128} 129/** 130 * Adds a fixed (wired) TLB mapping. Returns TLB index used or -1 on error. 131 * Assumes both pages are valid. Use cvmx_core_add_fixed_tlb_mapping_bits for more control. 132 * This is a wrapper around cvmx_core_add_wired_tlb_entry() 133 * 134 * @param vaddr Virtual address to map 135 * @param page0_addr page 0 physical address 136 * @param page1_addr page1 physical address 137 * @param page_mask page mask. 138 * 139 * @return Success: TLB index used (0-31) 140 * Failure: -1 141 */ 142int cvmx_core_add_fixed_tlb_mapping(uint64_t vaddr, uint64_t page0_addr, uint64_t page1_addr, cvmx_tlb_pagemask_t page_mask) 143{ 144 145 return(cvmx_core_add_fixed_tlb_mapping_bits(vaddr, page0_addr | TLB_DIRTY | TLB_VALID | TLB_GLOBAL, page1_addr | TLB_DIRTY | TLB_VALID | TLB_GLOBAL, page_mask)); 146 147} 148