xref: /freebsd/sys/dev/mlx/mlx_pci.c (revision 1dfcff294e44d4b45813288ef4095c36abb22f0e)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 __FBSDID("$FreeBSD$");
31 
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/bio.h>
35 #include <sys/kernel.h>
36 #include <sys/lock.h>
37 #include <sys/module.h>
38 #include <sys/mutex.h>
39 #include <sys/sx.h>
40 
41 #include <sys/bus.h>
42 #include <sys/conf.h>
43 
44 #include <machine/bus.h>
45 #include <machine/resource.h>
46 #include <sys/rman.h>
47 
48 #include <geom/geom_disk.h>
49 
50 #include <dev/pci/pcireg.h>
51 #include <dev/pci/pcivar.h>
52 
53 #include <dev/mlx/mlxio.h>
54 #include <dev/mlx/mlxvar.h>
55 #include <dev/mlx/mlxreg.h>
56 
57 static int			mlx_pci_probe(device_t dev);
58 static int			mlx_pci_attach(device_t dev);
59 
60 static device_method_t mlx_methods[] = {
61     /* Device interface */
62     DEVMETHOD(device_probe,	mlx_pci_probe),
63     DEVMETHOD(device_attach,	mlx_pci_attach),
64     DEVMETHOD(device_detach,	mlx_detach),
65     DEVMETHOD(device_shutdown,	mlx_shutdown),
66     DEVMETHOD(device_suspend,	mlx_suspend),
67     DEVMETHOD(device_resume,	mlx_resume),
68 
69     DEVMETHOD_END
70 };
71 
72 static driver_t mlx_pci_driver = {
73 	"mlx",
74 	mlx_methods,
75 	sizeof(struct mlx_softc)
76 };
77 
78 DRIVER_MODULE(mlx, pci, mlx_pci_driver, 0, 0);
79 
80 struct mlx_ident
81 {
82     u_int16_t	vendor;
83     u_int16_t	device;
84     u_int16_t	subvendor;
85     u_int16_t	subdevice;
86     int		iftype;
87     char	*desc;
88 } mlx_identifiers[] = {
89     {0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"},
90     {0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"},
91     {0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"},
92     {0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"},
93     {0, 0, 0, 0, 0, 0}
94 };
95 
96 static struct mlx_ident *
97 mlx_pci_match(device_t dev)
98 {
99     struct mlx_ident *m;
100 
101     for (m = mlx_identifiers; m->vendor != 0; m++) {
102 	if ((m->vendor == pci_get_vendor(dev)) &&
103 	    (m->device == pci_get_device(dev)) &&
104 	    ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
105 				     (m->subdevice == pci_get_subdevice(dev)))))
106 	    return (m);
107     }
108     return (NULL);
109 }
110 
111 static int
112 mlx_pci_probe(device_t dev)
113 {
114     struct mlx_ident	*m;
115 
116     debug_called(1);
117 
118     m = mlx_pci_match(dev);
119     if (m != NULL) {
120 	device_set_desc(dev, m->desc);
121 	return(BUS_PROBE_DEFAULT);
122     }
123     return(ENXIO);
124 }
125 
126 static int
127 mlx_pci_attach(device_t dev)
128 {
129     struct mlx_softc	*sc;
130     struct mlx_ident	*m;
131     int			error;
132 
133     debug_called(1);
134 
135     pci_enable_busmaster(dev);
136 
137     sc = device_get_softc(dev);
138     sc->mlx_dev = dev;
139 
140     /*
141      * Work out what sort of adapter this is (we need to know this in order
142      * to map the appropriate interface resources).
143      */
144     m = mlx_pci_match(dev);
145     if (m == NULL)		/* shouldn't happen */
146 	return(ENXIO);
147     sc->mlx_iftype = m->iftype;
148 
149     mtx_init(&sc->mlx_io_lock, "mlx I/O", NULL, MTX_DEF);
150     sx_init(&sc->mlx_config_lock, "mlx config");
151     callout_init_mtx(&sc->mlx_timeout, &sc->mlx_io_lock, 0);
152 
153     /*
154      * Allocate the PCI register window.
155      */
156 
157     /* type 2/3 adapters have an I/O region we don't prefer at base 0 */
158     switch(sc->mlx_iftype) {
159     case MLX_IFTYPE_2:
160     case MLX_IFTYPE_3:
161 	sc->mlx_mem_type = SYS_RES_MEMORY;
162 	sc->mlx_mem_rid = MLX_CFG_BASE1;
163 	sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
164 		&sc->mlx_mem_rid, RF_ACTIVE);
165 	if (sc->mlx_mem == NULL) {
166 	    sc->mlx_mem_type = SYS_RES_IOPORT;
167 	    sc->mlx_mem_rid = MLX_CFG_BASE0;
168 	    sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
169 		&sc->mlx_mem_rid, RF_ACTIVE);
170 	}
171 	break;
172     case MLX_IFTYPE_4:
173     case MLX_IFTYPE_5:
174 	sc->mlx_mem_type = SYS_RES_MEMORY;
175 	sc->mlx_mem_rid = MLX_CFG_BASE0;
176 	sc->mlx_mem = bus_alloc_resource_any(dev, sc->mlx_mem_type,
177 		&sc->mlx_mem_rid, RF_ACTIVE);
178 	break;
179     }
180     if (sc->mlx_mem == NULL) {
181 	device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
182 	mlx_free(sc);
183 	return(ENXIO);
184     }
185 
186     /*
187      * Allocate the parent bus DMA tag appropriate for PCI.
188      */
189     error = bus_dma_tag_create(bus_get_dma_tag(dev),	/* PCI parent */
190 			       1, 0, 			/* alignment, boundary */
191 			       BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
192 			       BUS_SPACE_MAXADDR, 	/* highaddr */
193 			       NULL, NULL, 		/* filter, filterarg */
194 			       BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
195 			       BUS_SPACE_UNRESTRICTED,	/* nsegments */
196 			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
197 			       BUS_DMA_ALLOCNOW,	/* flags */
198 			       NULL,			/* lockfunc */
199 			       NULL,			/* lockarg */
200 			       &sc->mlx_parent_dmat);
201     if (error != 0) {
202 	device_printf(dev, "can't allocate parent DMA tag\n");
203 	mlx_free(sc);
204 	return(ENOMEM);
205     }
206 
207     /*
208      * Do bus-independent initialisation.
209      */
210     error = mlx_attach(sc);
211     if (error != 0) {
212 	mlx_free(sc);
213 	return(error);
214     }
215 
216     /*
217      * Start the controller.
218      */
219     mlx_startup(sc);
220     return(0);
221 }
222