1 /*-
2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors.
3 *
4 * Copyright (C) 2000, Peter Wemm <peter@netplex.com.au>
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 * notices, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notices, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHORS BE LIABLE.
19 */
20
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD$");
23
24 #include <sys/param.h>
25 #include <sys/systm.h>
26 #include <sys/kernel.h>
27 #include <sys/module.h>
28 #include <sys/bus.h>
29 #include <machine/bus.h>
30 #include <sys/rman.h>
31 #include <machine/resource.h>
32
33 #include <dev/si/sireg.h>
34 #include <dev/si/sivar.h>
35
36 #include <dev/pci/pcireg.h>
37 #include <dev/pci/pcivar.h>
38
39 static int
si_pci_probe(device_t dev)40 si_pci_probe(device_t dev)
41 {
42 const char *desc = NULL;
43
44 switch (pci_get_devid(dev)) {
45 case 0x400011cb:
46 desc = "Specialix SI/XIO PCI host card";
47 break;
48 case 0x200011cb:
49 if (pci_read_config(dev, SIJETSSIDREG, 4) == 0x020011cb)
50 desc = "Specialix SX PCI host card";
51 break;
52 }
53 if (desc) {
54 device_set_desc(dev, desc);
55 return BUS_PROBE_DEFAULT;
56 }
57 return ENXIO;
58 }
59
60 static int
si_pci_attach(device_t dev)61 si_pci_attach(device_t dev)
62 {
63 struct si_softc *sc;
64 void *ih;
65 int error;
66
67 error = 0;
68 ih = NULL;
69 sc = device_get_softc(dev);
70
71 switch (pci_get_devid(dev)) {
72 case 0x400011cb:
73 sc->sc_type = SIPCI;
74 sc->sc_mem_rid = SIPCIBADR;
75 break;
76 case 0x200011cb:
77 sc->sc_type = SIJETPCI;
78 sc->sc_mem_rid = SIJETBADR;
79 break;
80 }
81
82 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
83 &sc->sc_mem_rid,
84 RF_ACTIVE);
85 if (!sc->sc_mem_res) {
86 device_printf(dev, "couldn't map memory\n");
87 goto fail;
88 }
89 sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_mem_res);
90 sc->sc_maddr = rman_get_virtual(sc->sc_mem_res);
91
92 sc->sc_irq_rid = 0;
93 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
94 &sc->sc_irq_rid,
95 RF_ACTIVE | RF_SHAREABLE);
96 if (!sc->sc_irq_res) {
97 device_printf(dev, "couldn't map interrupt\n");
98 goto fail;
99 }
100 sc->sc_irq = rman_get_start(sc->sc_irq_res);
101 error = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_TTY,
102 NULL, si_intr, sc, &ih);
103 if (error) {
104 device_printf(dev, "could not activate interrupt\n");
105 goto fail;
106 }
107
108 if (pci_get_devid(dev) == 0x200011cb) {
109 int rid;
110 struct resource *plx_res;
111 uint32_t *addr;
112 uint32_t oldvalue;
113
114 /* Perform a PLX control register fixup */
115 rid = PCIR_BAR(0);
116 plx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
117 RF_ACTIVE);
118 if (plx_res == NULL) {
119 device_printf(dev, "couldn't map plx registers\n");
120 } else {
121 addr = rman_get_virtual(plx_res);
122 oldvalue = addr[0x50 / 4];
123 if (oldvalue != 0x18260000) {
124 device_printf(dev, "PLX register 0x50: 0x%08x changed to 0x%08x\n", oldvalue, 0x18260000);
125 addr[0x50 / 4] = 0x18260000;
126 }
127 bus_release_resource(dev, SYS_RES_MEMORY, rid, plx_res);
128 }
129 }
130
131 error = siattach(dev);
132 if (error)
133 goto fail;
134 return (0); /* success */
135
136 fail:
137 if (error == 0)
138 error = ENXIO;
139 if (sc->sc_irq_res) {
140 if (ih)
141 bus_teardown_intr(dev, sc->sc_irq_res, ih);
142 bus_release_resource(dev, SYS_RES_IRQ,
143 sc->sc_irq_rid, sc->sc_irq_res);
144 sc->sc_irq_res = 0;
145 }
146 if (sc->sc_mem_res) {
147 bus_release_resource(dev, SYS_RES_MEMORY,
148 sc->sc_mem_rid, sc->sc_mem_res);
149 sc->sc_mem_res = 0;
150 }
151 return (error);
152 }
153
154 static device_method_t si_pci_methods[] = {
155 /* Device interface */
156 DEVMETHOD(device_probe, si_pci_probe),
157 DEVMETHOD(device_attach, si_pci_attach),
158
159 { 0, 0 }
160 };
161
162 static driver_t si_pci_driver = {
163 "si",
164 si_pci_methods,
165 sizeof(struct si_softc),
166 };
167
168 DRIVER_MODULE(si, pci, si_pci_driver, si_devclass, 0, 0);
169