1 /*-
2 * Copyright (c) 1999 Michael Smith
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/dev/mlx/mlx_pci.c,v 1.4.2.5 2001/06/25 04:37:51 msmith Exp $
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/bus.h>
33 #include <sys/conf.h>
34 #include <sys/devicestat.h>
35 #include <sys/disk.h>
36 #include <sys/rman.h>
37
38 #include <bus/pci/pcireg.h>
39 #include <bus/pci/pcivar.h>
40
41 #include "mlx_compat.h"
42 #include "mlxio.h"
43 #include "mlxvar.h"
44 #include "mlxreg.h"
45
46 static int mlx_pci_probe(device_t dev);
47 static int mlx_pci_attach(device_t dev);
48
49 static device_method_t mlx_methods[] = {
50 /* Device interface */
51 DEVMETHOD(device_probe, mlx_pci_probe),
52 DEVMETHOD(device_attach, mlx_pci_attach),
53 DEVMETHOD(device_detach, mlx_detach),
54 DEVMETHOD(device_shutdown, mlx_shutdown),
55 DEVMETHOD(device_suspend, mlx_suspend),
56 DEVMETHOD(device_resume, mlx_resume),
57
58 DEVMETHOD(bus_print_child, bus_generic_print_child),
59 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
60 DEVMETHOD_END
61 };
62
63 static driver_t mlx_pci_driver = {
64 "mlx",
65 mlx_methods,
66 sizeof(struct mlx_softc)
67 };
68
69 DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, NULL, NULL);
70
71 struct mlx_ident
72 {
73 u_int16_t vendor;
74 u_int16_t device;
75 u_int16_t subvendor;
76 u_int16_t subdevice;
77 int iftype;
78 char *desc;
79 } mlx_identifiers[] = {
80 {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"},
81 {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"},
82 {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"},
83 {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"},
84 {0, 0, 0, 0, 0, 0}
85 };
86
87 static int
mlx_pci_probe(device_t dev)88 mlx_pci_probe(device_t dev)
89 {
90 struct mlx_ident *m;
91
92 debug_called(1);
93
94 for (m = mlx_identifiers; m->vendor != 0; m++) {
95 if ((m->vendor == pci_get_vendor(dev)) &&
96 (m->device == pci_get_device(dev)) &&
97 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
98 (m->subdevice == pci_get_subdevice(dev))))) {
99
100 device_set_desc(dev, m->desc);
101 return(-10); /* allow room to be overridden */
102 }
103 }
104 return(ENXIO);
105 }
106
107 static int
mlx_pci_attach(device_t dev)108 mlx_pci_attach(device_t dev)
109 {
110 struct mlx_softc *sc;
111 int i, error;
112 u_int32_t command;
113
114 debug_called(1);
115
116 /*
117 * Make sure we are going to be able to talk to this board.
118 */
119 command = pci_read_config(dev, PCIR_COMMAND, 2);
120 if ((command & PCIM_CMD_MEMEN) == 0) {
121 device_printf(dev, "memory window not available\n");
122 return(ENXIO);
123 }
124 /* force the busmaster enable bit on */
125 command |= PCIM_CMD_BUSMASTEREN;
126 pci_write_config(dev, PCIR_COMMAND, command, 2);
127
128 /*
129 * Initialise softc.
130 */
131 sc = device_get_softc(dev);
132 bzero(sc, sizeof(*sc));
133 sc->mlx_dev = dev;
134
135 /*
136 * Work out what sort of adapter this is (we need to know this in order
137 * to map the appropriate interface resources).
138 */
139 sc->mlx_iftype = 0;
140 for (i = 0; mlx_identifiers[i].vendor != 0; i++) {
141 if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) &&
142 (mlx_identifiers[i].device == pci_get_device(dev))) {
143 sc->mlx_iftype = mlx_identifiers[i].iftype;
144 break;
145 }
146 }
147 if (sc->mlx_iftype == 0) /* shouldn't happen */
148 return(ENXIO);
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(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE);
161 if (sc->mlx_mem == NULL) {
162 sc->mlx_mem_type = SYS_RES_IOPORT;
163 sc->mlx_mem_rid = MLX_CFG_BASE0;
164 sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE);
165 }
166 break;
167 case MLX_IFTYPE_4:
168 case MLX_IFTYPE_5:
169 sc->mlx_mem_type = SYS_RES_MEMORY;
170 sc->mlx_mem_rid = MLX_CFG_BASE0;
171 sc->mlx_mem = bus_alloc_resource(dev, sc->mlx_mem_type, &sc->mlx_mem_rid, 0, ~0, 1, RF_ACTIVE);
172 break;
173 }
174 if (sc->mlx_mem == NULL) {
175 device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
176 mlx_free(sc);
177 return(ENXIO);
178 }
179 sc->mlx_btag = rman_get_bustag(sc->mlx_mem);
180 sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem);
181
182 /*
183 * Allocate the parent bus DMA tag appropriate for PCI.
184 */
185 error = bus_dma_tag_create(NULL, /* parent */
186 1, 0, /* alignment, boundary */
187 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
188 BUS_SPACE_MAXADDR, /* highaddr */
189 MAXBSIZE, MLX_NSEG, /* maxsize, nsegments */
190 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
191 BUS_DMA_ALLOCNOW, /* flags */
192 &sc->mlx_parent_dmat);
193 if (error != 0) {
194 device_printf(dev, "can't allocate parent DMA tag\n");
195 mlx_free(sc);
196 return(ENOMEM);
197 }
198
199 /*
200 * Do bus-independant initialisation.
201 */
202 error = mlx_attach(sc);
203 if (error != 0) {
204 mlx_free(sc);
205 return(error);
206 }
207
208 /*
209 * Start the controller.
210 */
211 mlx_startup(sc);
212 return(0);
213 }
214