thunder_pcie_common.c revision 286470 
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: head/sys/arm64/cavium/thunder_pcie_common.c 286470 2015-08-08 20:34:55Z zbb $");
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
46int
47thunder_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
56int
57thunder_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
65int
66thunder_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
74int
75thunder_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
84int
85thunder_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
93uint32_t
94range_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
113uint32_t
114range_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
133uint64_t
134range_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