1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1999 Michael Smith
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/bio.h>
32 #include <sys/kernel.h>
33 #include <sys/lock.h>
34 #include <sys/module.h>
35 #include <sys/mutex.h>
36 #include <sys/sx.h>
37
38 #include <sys/bus.h>
39 #include <sys/conf.h>
40
41 #include <machine/bus.h>
42 #include <machine/resource.h>
43 #include <sys/rman.h>
44
45 #include <geom/geom_disk.h>
46
47 #include <dev/pci/pcireg.h>
48 #include <dev/pci/pcivar.h>
49
50 #include <dev/mlx/mlxio.h>
51 #include <dev/mlx/mlxvar.h>
52 #include <dev/mlx/mlxreg.h>
53
54 static int mlx_pci_probe(device_t dev);
55 static int mlx_pci_attach(device_t dev);
56
57 static device_method_t mlx_methods[] = {
58 /* Device interface */
59 DEVMETHOD(device_probe, mlx_pci_probe),
60 DEVMETHOD(device_attach, mlx_pci_attach),
61 DEVMETHOD(device_detach, mlx_detach),
62 DEVMETHOD(device_shutdown, mlx_shutdown),
63 DEVMETHOD(device_suspend, mlx_suspend),
64 DEVMETHOD(device_resume, mlx_resume),
65
66 DEVMETHOD_END
67 };
68
69 static driver_t mlx_pci_driver = {
70 "mlx",
71 mlx_methods,
72 sizeof(struct mlx_softc)
73 };
74
75 DRIVER_MODULE(mlx, pci, mlx_pci_driver, 0, 0);
76
77 struct mlx_ident
78 {
79 u_int16_t vendor;
80 u_int16_t device;
81 u_int16_t subvendor;
82 u_int16_t subdevice;
83 int iftype;
84 char *desc;
85 } mlx_identifiers[] = {
86 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"},
87 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"},
88 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"},
89 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"},
90 {0, 0, 0, 0, 0, 0}
91 };
92
93 static struct mlx_ident *
mlx_pci_match(device_t dev)94 mlx_pci_match(device_t dev)
95 {
96 struct mlx_ident *m;
97
98 for (m = mlx_identifiers; m->vendor != 0; m++) {
99 if ((m->vendor == pci_get_vendor(dev)) &&
100 (m->device == pci_get_device(dev)) &&
101 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
102 (m->subdevice == pci_get_subdevice(dev)))))
103 return (m);
104 }
105 return (NULL);
106 }
107
108 static int
mlx_pci_probe(device_t dev)109 mlx_pci_probe(device_t dev)
110 {
111 struct mlx_ident *m;
112
113 debug_called(1);
114
115 m = mlx_pci_match(dev);
116 if (m != NULL) {
117 device_set_desc(dev, m->desc);
118 return(BUS_PROBE_DEFAULT);
119 }
120 return(ENXIO);
121 }
122
123 static int
mlx_pci_attach(device_t dev)124 mlx_pci_attach(device_t dev)
125 {
126 struct mlx_softc *sc;
127 struct mlx_ident *m;
128 int error;
129
130 debug_called(1);
131
132 pci_enable_busmaster(dev);
133
134 sc = device_get_softc(dev);
135 sc->mlx_dev = dev;
136
137 /*
138 * Work out what sort of adapter this is (we need to know this in order
139 * to map the appropriate interface resources).
140 */
141 m = mlx_pci_match(dev);
142 if (m == NULL) /* shouldn't happen */
143 return(ENXIO);
144 sc->mlx_iftype = m->iftype;
145
146 mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF);
147 sx_init(&sc->mlx_config_lock, "mlx config");
148 callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0);
149
150 /*
151 * Allocate the PCI register window.
152 */
153
154 /* type 2/3 adapters have an I/O region we don't prefer at base 0 */
155 switch(sc->mlx_iftype) {
156 case MLX_IFTYPE_2:
157 case MLX_IFTYPE_3:
158 sc->mlx_mem_type = SYS_RES_MEMORY;
159 sc->mlx_mem_rid = MLX_CFG_BASE1;
160 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
161 &sc->mlx_mem_rid, RF_ACTIVE);
162 if (sc->mlx_mem == NULL) {
163 sc->mlx_mem_type = SYS_RES_IOPORT;
164 sc->mlx_mem_rid = MLX_CFG_BASE0;
165 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
166 &sc->mlx_mem_rid, RF_ACTIVE);
167 }
168 break;
169 case MLX_IFTYPE_4:
170 case MLX_IFTYPE_5:
171 sc->mlx_mem_type = SYS_RES_MEMORY;
172 sc->mlx_mem_rid = MLX_CFG_BASE0;
173 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
174 &sc->mlx_mem_rid, RF_ACTIVE);
175 break;
176 }
177 if (sc->mlx_mem == NULL) {
178 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
179 mlx_free(sc);
180 return(ENXIO);
181 }
182
183 /*
184 * Allocate the parent bus DMA tag appropriate for PCI.
185 */
186 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* PCI parent */
187 1, 0, /* alignment, boundary */
188 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
189 BUS_SPACE_MAXADDR, /* highaddr */
190 NULL, NULL, /* filter, filterarg */
191 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
192 BUS_SPACE_UNRESTRICTED, /* nsegments */
193 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
194 BUS_DMA_ALLOCNOW, /* flags */
195 NULL, /* lockfunc */
196 NULL, /* lockarg */
197 &sc->mlx_parent_dmat);
198 if (error != 0) {
199 device_printf(dev, "can't allocate parent DMA tag\n");
200 mlx_free(sc);
201 return(ENOMEM);
202 }
203
204 /*
205 * Do bus-independent initialisation.
206 */
207 error = mlx_attach(sc);
208 if (error != 0) {
209 mlx_free(sc);
210 return(error);
211 }
212
213 /*
214 * Start the controller.
215 */
216 mlx_startup(sc);
217 return(0);
218 }
219