1 /* $NetBSD: amdccp_pci.c,v 1.4 2022/12/18 15:50:32 reinoud Exp $ */
2
3 /*-
4 * Copyright (c) 2020 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: amdccp_pci.c,v 1.4 2022/12/18 15:50:32 reinoud Exp $");
34
35 #include <sys/param.h>
36 #include <sys/bus.h>
37 #include <sys/cpu.h>
38 #include <sys/device.h>
39
40 #include <dev/pci/pcireg.h>
41 #include <dev/pci/pcivar.h>
42 #include <dev/pci/pcidevs.h>
43
44 #include <dev/ic/amdccpvar.h>
45
46 static int amdccp_pci_match(device_t, cfdata_t, void *);
47 static void amdccp_pci_attach(device_t, device_t, void *);
48
49 CFATTACH_DECL_NEW(amdccp_pci, sizeof(struct amdccp_softc),
50 amdccp_pci_match, amdccp_pci_attach, NULL, NULL);
51
52 #define AMDCCP_MEM_BAR PCI_BAR2
53
54 static const struct amdccp_pci_product {
55 pci_vendor_id_t vendor;
56 pci_product_id_t product;
57 } amdccp_pci_products[] = {
58 { .vendor = PCI_VENDOR_AMD,
59 .product = PCI_PRODUCT_AMD_F16_CCP,
60 },
61 { .vendor = PCI_VENDOR_AMD,
62 .product = PCI_PRODUCT_AMD_F17_CCP_1,
63 },
64 { .vendor = PCI_VENDOR_AMD,
65 .product = PCI_PRODUCT_AMD_F17_CCP_2,
66 },
67 { .vendor = PCI_VENDOR_AMD,
68 .product = PCI_PRODUCT_AMD_F17_1X_PSP,
69 },
70 { .vendor = PCI_VENDOR_AMD,
71 .product = PCI_PRODUCT_AMD_F17_7X_CCP,
72 },
73 { .vendor = PCI_VENDOR_AMD,
74 .product = PCI_PRODUCT_AMD_F17_9X_CCP,
75 },
76 };
77
78 static const struct amdccp_pci_product *
amdccp_pci_lookup(const struct pci_attach_args * const pa)79 amdccp_pci_lookup(const struct pci_attach_args * const pa)
80 {
81 unsigned int i;
82
83 for (i = 0; i < __arraycount(amdccp_pci_products); i++) {
84 if (PCI_VENDOR(pa->pa_id) == amdccp_pci_products[i].vendor &&
85 PCI_PRODUCT(pa->pa_id) == amdccp_pci_products[i].product) {
86 return &amdccp_pci_products[i];
87 }
88 }
89 return NULL;
90 }
91
92 static int
amdccp_pci_match(device_t parent,cfdata_t cf,void * aux)93 amdccp_pci_match(device_t parent, cfdata_t cf, void *aux)
94 {
95 const struct pci_attach_args * const pa = aux;
96
97 return amdccp_pci_lookup(pa) != NULL;
98 }
99
100 static void
amdccp_pci_attach(device_t parent,device_t self,void * aux)101 amdccp_pci_attach(device_t parent, device_t self, void *aux)
102 {
103 struct amdccp_softc * const sc = device_private(self);
104 const struct pci_attach_args * const pa = aux;
105 pcireg_t type;
106
107 sc->sc_dev = self;
108
109 aprint_naive("\n");
110 aprint_normal(": AMD Cryptographic Coprocessor\n");
111
112 type = pci_mapreg_type(pa->pa_pc, pa->pa_tag, AMDCCP_MEM_BAR);
113 if (PCI_MAPREG_TYPE(type) != PCI_MAPREG_TYPE_MEM) {
114 aprint_error_dev(self, "expected MEM register, got IO\n");
115 return;
116 }
117
118 if (pci_mapreg_map(pa, AMDCCP_MEM_BAR, type, 0,
119 &sc->sc_bst, &sc->sc_bsh, NULL, NULL) != 0) {
120 aprint_error_dev(self, "unable to map device registers\n");
121 return;
122 }
123
124 amdccp_common_attach(sc);
125 pmf_device_register(self, NULL, NULL);
126 }
127