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/malloc.h> 39 #include <sys/bus.h> 40 #include <sys/rman.h> 41 42 #include <machine/bus.h> 43 #include <machine/cpu.h> 44 #include <machine/intr.h> 45 46 #include "thunder_pcie_common.h" 47 48 MALLOC_DEFINE(M_THUNDER_PCIE, "Thunder PCIe driver", "Thunder PCIe driver memory"); 49 50 uint32_t 51 range_addr_is_pci(struct pcie_range *ranges, uint64_t addr, uint64_t size) 52 { 53 struct pcie_range *r; 54 int tuple; 55 56 for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) { 57 r = &ranges[tuple]; 58 if (addr >= r->pci_base && 59 addr < (r->pci_base + r->size) && 60 size < r->size) { 61 /* Address is within PCI range */ 62 return (1); 63 } 64 } 65 66 /* Address is outside PCI range */ 67 return (0); 68 } 69 70 uint32_t 71 range_addr_is_phys(struct pcie_range *ranges, uint64_t addr, uint64_t size) 72 { 73 struct pcie_range *r; 74 int tuple; 75 76 for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) { 77 r = &ranges[tuple]; 78 if (addr >= r->phys_base && 79 addr < (r->phys_base + r->size) && 80 size < r->size) { 81 /* Address is within Physical range */ 82 return (1); 83 } 84 } 85 86 /* Address is outside Physical range */ 87 return (0); 88 } 89 90 uint64_t 91 range_addr_pci_to_phys(struct pcie_range *ranges, uint64_t pci_addr) 92 { 93 struct pcie_range *r; 94 uint64_t offset; 95 int tuple; 96 97 /* Find physical address corresponding to given bus address */ 98 for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) { 99 r = &ranges[tuple]; 100 if (pci_addr >= r->pci_base && 101 pci_addr < (r->pci_base + r->size)) { 102 /* Given pci addr is in this range. 103 * Translate bus addr to phys addr. 104 */ 105 offset = pci_addr - r->pci_base; 106 return (r->phys_base + offset); 107 } 108 } 109 return (0); 110 } 111 112