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 46 int 47 thunder_common_map_msi(device_t pcib, device_t child, int irq, 48 uint64_t *addr, uint32_t *data) 49 { 50 int error; 51 52 error = arm_map_msix(child, irq, addr, data); 53 return (error); 54 } 55 56 int 57 thunder_common_alloc_msix(device_t pcib, device_t child, int *irq) 58 { 59 int error; 60 61 error = arm_alloc_msix(child, irq); 62 return (error); 63 } 64 65 int 66 thunder_common_release_msix(device_t pcib, device_t child, int irq) 67 { 68 int error; 69 70 error = arm_release_msix(child, irq); 71 return (error); 72 } 73 74 int 75 thunder_common_alloc_msi(device_t pcib, device_t child, int count, int maxcount, 76 int *irqs) 77 { 78 int error; 79 80 error = arm_alloc_msi(child, count, irqs); 81 return (error); 82 } 83 84 int 85 thunder_common_release_msi(device_t pcib, device_t child, int count, int *irqs) 86 { 87 int error; 88 89 error = arm_release_msi(child, count, irqs); 90 return (error); 91 } 92 93 uint32_t 94 range_addr_is_pci(struct pcie_range *ranges, uint64_t addr, uint64_t size) 95 { 96 struct pcie_range *r; 97 int tuple; 98 99 for (tuple = 0; tuple < MAX_RANGES_TUPLES; tuple++) { 100 r = &ranges[tuple]; 101 if (addr >= r->pci_base && 102 addr < (r->pci_base + r->size) && 103 size < r->size) { 104 /* Address is within PCI range */ 105 return (1); 106 } 107 } 108 109 /* Address is outside PCI range */ 110 return (0); 111 } 112 113 uint32_t 114 range_addr_is_phys(struct pcie_range *ranges, uint64_t addr, uint64_t size) 115 { 116 struct pcie_range *r; 117 int tuple; 118 119 for (tuple = 0; tuple < MAX_RANGES_TUPLES; tuple++) { 120 r = &ranges[tuple]; 121 if (addr >= r->phys_base && 122 addr < (r->phys_base + r->size) && 123 size < r->size) { 124 /* Address is within Physical range */ 125 return (1); 126 } 127 } 128 129 /* Address is outside Physical range */ 130 return (0); 131 } 132 133 uint64_t 134 range_addr_pci_to_phys(struct pcie_range *ranges, uint64_t pci_addr) 135 { 136 struct pcie_range *r; 137 uint64_t offset; 138 int tuple; 139 140 /* Find physical address corresponding to given bus address */ 141 for (tuple = 0; tuple < MAX_RANGES_TUPLES; tuple++) { 142 r = &ranges[tuple]; 143 if (pci_addr >= r->pci_base && 144 pci_addr < (r->pci_base + r->size)) { 145 /* Given pci addr is in this range. 146 * Translate bus addr to phys addr. 147 */ 148 offset = pci_addr - r->pci_base; 149 return (r->phys_base + offset); 150 } 151 } 152 return (0); 153 } 154 155