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/cdefs.h>
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bio.h>
33 #include <sys/kernel.h>
34 #include <sys/lock.h>
35 #include <sys/module.h>
36 #include <sys/mutex.h>
37 #include <sys/sx.h>
38
39 #include <sys/bus.h>
40 #include <sys/conf.h>
41
42 #include <machine/bus.h>
43 #include <machine/resource.h>
44 #include <sys/rman.h>
45
46 #include <geom/geom_disk.h>
47
48 #include <dev/pci/pcireg.h>
49 #include <dev/pci/pcivar.h>
50
51 #include <dev/mlx/mlxio.h>
52 #include <dev/mlx/mlxvar.h>
53 #include <dev/mlx/mlxreg.h>
54
55 static int mlx_pci_probe(device_t dev);
56 static int mlx_pci_attach(device_t dev);
57
58 static device_method_t mlx_methods[] = {
59 /* Device interface */
60 DEVMETHOD(device_probe, mlx_pci_probe),
61 DEVMETHOD(device_attach, mlx_pci_attach),
62 DEVMETHOD(device_detach, mlx_detach),
63 DEVMETHOD(device_shutdown, mlx_shutdown),
64 DEVMETHOD(device_suspend, mlx_suspend),
65 DEVMETHOD(device_resume, mlx_resume),
66
67 DEVMETHOD_END
68 };
69
70 static driver_t mlx_pci_driver = {
71 "mlx",
72 mlx_methods,
73 sizeof(struct mlx_softc)
74 };
75
76 DRIVER_MODULE(mlx, pci, mlx_pci_driver, 0, 0);
77
78 struct mlx_ident
79 {
80 u_int16_t vendor;
81 u_int16_t device;
82 u_int16_t subvendor;
83 u_int16_t subdevice;
84 int iftype;
85 char *desc;
86 } mlx_identifiers[] = {
87 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"},
88 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"},
89 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"},
90 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"},
91 {0, 0, 0, 0, 0, 0}
92 };
93
94 static struct mlx_ident *
mlx_pci_match(device_t dev)95 mlx_pci_match(device_t dev)
96 {
97 struct mlx_ident *m;
98
99 for (m = mlx_identifiers; m->vendor != 0; m++) {
100 if ((m->vendor == pci_get_vendor(dev)) &&
101 (m->device == pci_get_device(dev)) &&
102 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
103 (m->subdevice == pci_get_subdevice(dev)))))
104 return (m);
105 }
106 return (NULL);
107 }
108
109 static int
mlx_pci_probe(device_t dev)110 mlx_pci_probe(device_t dev)
111 {
112 struct mlx_ident *m;
113
114 debug_called(1);
115
116 m = mlx_pci_match(dev);
117 if (m != NULL) {
118 device_set_desc(dev, m->desc);
119 return(BUS_PROBE_DEFAULT);
120 }
121 return(ENXIO);
122 }
123
124 static int
mlx_pci_attach(device_t dev)125 mlx_pci_attach(device_t dev)
126 {
127 struct mlx_softc *sc;
128 struct mlx_ident *m;
129 int error;
130
131 debug_called(1);
132
133 pci_enable_busmaster(dev);
134
135 sc = device_get_softc(dev);
136 sc->mlx_dev = dev;
137
138 /*
139 * Work out what sort of adapter this is (we need to know this in order
140 * to map the appropriate interface resources).
141 */
142 m = mlx_pci_match(dev);
143 if (m == NULL) /* shouldn't happen */
144 return(ENXIO);
145 sc->mlx_iftype = m->iftype;
146
147 mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF);
148 sx_init(&sc->mlx_config_lock, "mlx config");
149 callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0);
150
151 /*
152 * Allocate the PCI register window.
153 */
154
155 /* type 2/3 adapters have an I/O region we don't prefer at base 0 */
156 switch(sc->mlx_iftype) {
157 case MLX_IFTYPE_2:
158 case MLX_IFTYPE_3:
159 sc->mlx_mem_type = SYS_RES_MEMORY;
160 sc->mlx_mem_rid = MLX_CFG_BASE1;
161 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
162 &sc->mlx_mem_rid, RF_ACTIVE);
163 if (sc->mlx_mem == NULL) {
164 sc->mlx_mem_type = SYS_RES_IOPORT;
165 sc->mlx_mem_rid = MLX_CFG_BASE0;
166 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
167 &sc->mlx_mem_rid, RF_ACTIVE);
168 }
169 break;
170 case MLX_IFTYPE_4:
171 case MLX_IFTYPE_5:
172 sc->mlx_mem_type = SYS_RES_MEMORY;
173 sc->mlx_mem_rid = MLX_CFG_BASE0;
174 sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
175 &sc->mlx_mem_rid, RF_ACTIVE);
176 break;
177 }
178 if (sc->mlx_mem == NULL) {
179 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
180 mlx_free(sc);
181 return(ENXIO);
182 }
183
184 /*
185 * Allocate the parent bus DMA tag appropriate for PCI.
186 */
187 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* PCI parent */
188 1, 0, /* alignment, boundary */
189 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
190 BUS_SPACE_MAXADDR, /* highaddr */
191 NULL, NULL, /* filter, filterarg */
192 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
193 BUS_SPACE_UNRESTRICTED, /* nsegments */
194 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
195 BUS_DMA_ALLOCNOW, /* flags */
196 NULL, /* lockfunc */
197 NULL, /* lockarg */
198 &sc->mlx_parent_dmat);
199 if (error != 0) {
200 device_printf(dev, "can't allocate parent DMA tag\n");
201 mlx_free(sc);
202 return(ENOMEM);
203 }
204
205 /*
206 * Do bus-independent initialisation.
207 */
208 error = mlx_attach(sc);
209 if (error != 0) {
210 mlx_free(sc);
211 return(error);
212 }
213
214 /*
215 * Start the controller.
216 */
217 mlx_startup(sc);
218 return(0);
219 }
220