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
range_addr_is_pci(struct pcie_range * ranges,uint64_t addr,uint64_t size)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 < MAX_RANGES_TUPLES; 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
range_addr_is_phys(struct pcie_range * ranges,uint64_t addr,uint64_t size)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 < MAX_RANGES_TUPLES; 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
range_addr_pci_to_phys(struct pcie_range * ranges,uint64_t pci_addr)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 < MAX_RANGES_TUPLES; 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