1 /*- 2 * Copyright (c) 2015 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Semihalf under 6 * the sponsorship of the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /* Common PCIe functions for Cavium Thunder SOC */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/bus.h> 39 #include <machine/bus.h> 40 #include <machine/cpu.h> 41 #include <machine/intr.h> 42 43 #include "thunder_pcie_common.h" 44 45 uint32_t 46 range_addr_is_pci(struct pcie_range *ranges, uint64_t addr, uint64_t size) 47 { 48 struct pcie_range *r; 49 int tuple; 50 51 for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) { 52 r = &ranges[tuple]; 53 if (addr >= r->pci_base && 54 addr < (r->pci_base + r->size) && 55 size < r->size) { 56 /* Address is within PCI range */ 57 return (1); 58 } 59 } 60 61 /* Address is outside PCI range */ 62 return (0); 63 } 64 65 uint32_t 66 range_addr_is_phys(struct pcie_range *ranges, uint64_t addr, uint64_t size) 67 { 68 struct pcie_range *r; 69 int tuple; 70 71 for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) { 72 r = &ranges[tuple]; 73 if (addr >= r->phys_base && 74 addr < (r->phys_base + r->size) && 75 size < r->size) { 76 /* Address is within Physical range */ 77 return (1); 78 } 79 } 80 81 /* Address is outside Physical range */ 82 return (0); 83 } 84 85 uint64_t 86 range_addr_pci_to_phys(struct pcie_range *ranges, uint64_t pci_addr) 87 { 88 struct pcie_range *r; 89 uint64_t offset; 90 int tuple; 91 92 /* Find physical address corresponding to given bus address */ 93 for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) { 94 r = &ranges[tuple]; 95 if (pci_addr >= r->pci_base && 96 pci_addr < (r->pci_base + r->size)) { 97 /* Given pci addr is in this range. 98 * Translate bus addr to phys addr. 99 */ 100 offset = pci_addr - r->pci_base; 101 return (r->phys_base + offset); 102 } 103 } 104 return (0); 105 } 106 107