1 /* $OpenBSD: cy_pci.c,v 1.16 2022/03/11 18:00:45 mpi Exp $ */
2 /*
3 * Copyright (c) 1996 Timo Rossi.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the names of contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 /*
32 * cy_pci.c
33 *
34 * Driver for Cyclades Cyclom-8/16/32 multiport serial cards
35 * (currently not tested with Cyclom-32 cards)
36 *
37 * Timo Rossi, 1996
38 */
39
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/device.h>
43
44 #include <machine/bus.h>
45
46 #include <dev/pci/pcivar.h>
47 #include <dev/pci/pcireg.h>
48 #include <dev/pci/pcidevs.h>
49
50 #include <dev/ic/cd1400reg.h>
51 #include <dev/ic/cyreg.h>
52
53 int cy_pci_match(struct device *, void *, void *);
54 void cy_pci_attach(struct device *, struct device *, void *);
55
56 struct cy_pci_softc {
57 struct cy_softc sc_cy; /* real softc */
58
59 bus_space_tag_t sc_iot; /* PLX i/o tag */
60 bus_space_handle_t sc_ioh; /* PLX i/o handle */
61 };
62
63 const struct cfattach cy_pci_ca = {
64 sizeof(struct cy_pci_softc), cy_pci_match, cy_pci_attach
65 };
66
67 #define CY_PLX_9050_ICS_IENABLE 0x040
68 #define CY_PLX_9050_ICS_LOCAL_IENABLE 0x001
69 #define CY_PLX_9050_ICS_LOCAL_IPOLARITY 0x002
70 #define CY_PLX_9060_ICS_IENABLE 0x100
71 #define CY_PLX_9060_ICS_LOCAL_IENABLE 0x800
72
73 const struct pci_matchid cy_pci_devices[] = {
74 { PCI_VENDOR_CYCLADES, PCI_PRODUCT_CYCLADES_CYCLOMY_1 },
75 { PCI_VENDOR_CYCLADES, PCI_PRODUCT_CYCLADES_CYCLOMY_2 },
76 { PCI_VENDOR_CYCLADES, PCI_PRODUCT_CYCLADES_CYCLOM4Y_1 },
77 { PCI_VENDOR_CYCLADES, PCI_PRODUCT_CYCLADES_CYCLOM4Y_2 },
78 { PCI_VENDOR_CYCLADES, PCI_PRODUCT_CYCLADES_CYCLOM8Y_1 },
79 { PCI_VENDOR_CYCLADES, PCI_PRODUCT_CYCLADES_CYCLOM8Y_2 },
80 };
81
82 int
cy_pci_match(struct device * parent,void * match,void * aux)83 cy_pci_match(struct device *parent, void *match, void *aux)
84 {
85 return (pci_matchbyid((struct pci_attach_args *)aux, cy_pci_devices,
86 nitems(cy_pci_devices)));
87 }
88
89 void
cy_pci_attach(struct device * parent,struct device * self,void * aux)90 cy_pci_attach(struct device *parent, struct device *self, void *aux)
91 {
92 struct cy_pci_softc *psc = (struct cy_pci_softc *)self;
93 struct cy_softc *sc = (struct cy_softc *)self;
94 struct pci_attach_args *pa = aux;
95 const char *intrstr = NULL;
96 pci_intr_handle_t ih;
97 pcireg_t memtype;
98 int plx_ver;
99
100 sc->sc_bustype = CY_BUSTYPE_PCI;
101
102 switch (PCI_PRODUCT(pa->pa_id)) {
103 case PCI_PRODUCT_CYCLADES_CYCLOMY_1:
104 case PCI_PRODUCT_CYCLADES_CYCLOM4Y_1:
105 case PCI_PRODUCT_CYCLADES_CYCLOM8Y_1:
106 memtype = PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT_1M;
107 break;
108 case PCI_PRODUCT_CYCLADES_CYCLOMY_2:
109 case PCI_PRODUCT_CYCLADES_CYCLOM4Y_2:
110 case PCI_PRODUCT_CYCLADES_CYCLOM8Y_2:
111 memtype = PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT;
112 break;
113 }
114
115 if (pci_mapreg_map(pa, 0x14, PCI_MAPREG_TYPE_IO, 0,
116 &psc->sc_iot, &psc->sc_ioh, NULL, NULL, 0) != 0) {
117 printf(": unable to map PLX registers\n");
118 return;
119 }
120
121 if (pci_mapreg_map(pa, 0x18, memtype, 0, &sc->sc_memt,
122 &sc->sc_memh, NULL, NULL, 0) != 0) {
123 printf(": couldn't map device registers\n");
124 return;
125 }
126
127 if ((sc->sc_nr_cd1400s = cy_probe_common(sc->sc_memt, sc->sc_memh,
128 CY_BUSTYPE_PCI)) == 0) {
129 printf(": PCI Cyclom card with no CD1400s\n");
130 return;
131 }
132
133 if (pci_intr_map(pa, &ih) != 0) {
134 printf(": couldn't map interrupt\n");
135 return;
136 }
137
138 intrstr = pci_intr_string(pa->pa_pc, ih);
139 sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_TTY, cy_intr,
140 sc, sc->sc_dev.dv_xname);
141 if (sc->sc_ih == NULL) {
142 printf(": couldn't establish interrupt");
143 if (intrstr != NULL)
144 printf(" at %s", intrstr);
145 printf("\n");
146 return;
147 }
148 printf(": %s", intrstr);
149
150 cy_attach(parent, self);
151
152 /* Get PLX version */
153 plx_ver = bus_space_read_1(sc->sc_memt, sc->sc_memh, CY_PLX_VER) & 0x0f;
154
155 /* Enable PCI card interrupts */
156 switch (plx_ver) {
157 case CY_PLX_9050:
158 bus_space_write_2(psc->sc_iot, psc->sc_ioh, CY_PCI_INTENA_9050,
159 CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE |
160 CY_PLX_9050_ICS_LOCAL_IPOLARITY);
161 break;
162
163 case CY_PLX_9060:
164 case CY_PLX_9080:
165 default:
166 bus_space_write_2(psc->sc_iot, psc->sc_ioh, CY_PCI_INTENA,
167 bus_space_read_2(psc->sc_iot, psc->sc_ioh,
168 CY_PCI_INTENA) | CY_PLX_9060_ICS_IENABLE |
169 CY_PLX_9060_ICS_LOCAL_IENABLE);
170 }
171 }
172