cvmx-core.c revision 215990
1/***********************license start*************** 2 * Copyright (c) 2003-2010 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 * This Software, including technical data, may be subject to U.S. export control 24 * laws, including the U.S. Export Administration Act and its associated 25 * regulations, and may be subject to export or import regulations in other 26 * countries. 27 28 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 29 * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR 30 * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO 31 * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR 32 * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM 33 * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, 34 * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF 35 * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR 36 * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR 37 * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. 38 ***********************license end**************************************/ 39 40 41 42 43 44 45 46/** 47 * @file 48 * 49 * Module to support operations on core such as TLB config, etc. 50 * 51 * <hr>$Revision: 49862 $<hr> 52 * 53 */ 54 55#ifdef CVMX_BUILD_FOR_LINUX_KERNEL 56#include <linux/module.h> 57#include <asm/octeon/cvmx.h> 58#include <asm/octeon/cvmx-core.h> 59#else 60#include "cvmx-config.h" 61#include "cvmx.h" 62#include "cvmx-core.h" 63#endif 64 65 66/** 67 * Adds a wired TLB entry, and returns the index of the entry added. 68 * Parameters are written to TLB registers without further processing. 69 * 70 * @param hi HI register value 71 * @param lo0 lo0 register value 72 * @param lo1 lo1 register value 73 * @param page_mask pagemask register value 74 * 75 * @return Success: TLB index used (0-31 Octeon, 0-63 Octeon+, or 0-127 76 * Octeon2). Failure: -1 77 */ 78int cvmx_core_add_wired_tlb_entry(uint64_t hi, uint64_t lo0, uint64_t lo1, cvmx_tlb_pagemask_t page_mask) 79{ 80 uint32_t index; 81 82 CVMX_MF_TLB_WIRED(index); 83 if (index >= (unsigned int)cvmx_core_get_tlb_entries()) 84 { 85 return(-1); 86 } 87 CVMX_MT_ENTRY_HIGH(hi); 88 CVMX_MT_ENTRY_LO_0(lo0); 89 CVMX_MT_ENTRY_LO_1(lo1); 90 CVMX_MT_PAGEMASK(page_mask); 91 CVMX_MT_TLB_INDEX(index); 92 CVMX_MT_TLB_WIRED(index + 1); 93 CVMX_EHB; 94 CVMX_TLBWI; 95 CVMX_EHB; 96 return(index); 97} 98 99 100 101/** 102 * Adds a fixed (wired) TLB mapping. Returns TLB index used or -1 on error. 103 * This is a wrapper around cvmx_core_add_wired_tlb_entry() 104 * 105 * @param vaddr Virtual address to map 106 * @param page0_addr page 0 physical address, with low 3 bits representing the DIRTY, VALID, and GLOBAL bits 107 * @param page1_addr page1 physical address, with low 3 bits representing the DIRTY, VALID, and GLOBAL bits 108 * @param page_mask page mask. 109 * 110 * @return Success: TLB index used (0-31) 111 * Failure: -1 112 */ 113int cvmx_core_add_fixed_tlb_mapping_bits(uint64_t vaddr, uint64_t page0_addr, uint64_t page1_addr, cvmx_tlb_pagemask_t page_mask) 114{ 115 116 if ((vaddr & (page_mask | 0x7ff)) 117 || ((page0_addr & ~0x7ULL) & ((page_mask | 0x7ff) >> 1)) 118 || ((page1_addr & ~0x7ULL) & ((page_mask | 0x7ff) >> 1))) 119 { 120 cvmx_dprintf("Error adding tlb mapping: invalid address alignment at vaddr: 0x%llx\n", (unsigned long long)vaddr); 121 return(-1); 122 } 123 124 125 return(cvmx_core_add_wired_tlb_entry(vaddr, 126 (page0_addr >> 6) | (page0_addr & 0x7), 127 (page1_addr >> 6) | (page1_addr & 0x7), 128 page_mask)); 129 130} 131/** 132 * Adds a fixed (wired) TLB mapping. Returns TLB index used or -1 on error. 133 * Assumes both pages are valid. Use cvmx_core_add_fixed_tlb_mapping_bits for more control. 134 * This is a wrapper around cvmx_core_add_wired_tlb_entry() 135 * 136 * @param vaddr Virtual address to map 137 * @param page0_addr page 0 physical address 138 * @param page1_addr page1 physical address 139 * @param page_mask page mask. 140 * 141 * @return Success: TLB index used (0-31) 142 * Failure: -1 143 */ 144int cvmx_core_add_fixed_tlb_mapping(uint64_t vaddr, uint64_t page0_addr, uint64_t page1_addr, cvmx_tlb_pagemask_t page_mask) 145{ 146 147 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)); 148 149} 150 151/** 152 * Return number of TLB entries. 153 */ 154int cvmx_core_get_tlb_entries(void) 155{ 156 if (OCTEON_IS_MODEL(OCTEON_CN3XXX)) 157 return 32; 158 else if (OCTEON_IS_MODEL(OCTEON_CN5XXX)) 159 return 64; 160 else 161 return 128; 162} 163