1 /*-
2 * Product specific probe and attach routines for:
3 * Buslogic BT946, BT948, BT956, BT958 SCSI controllers
4 *
5 * Copyright (c) 1995, 1997, 1998 Justin T. Gibbs
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: releng/10.1/sys/dev/buslogic/bt_pci.c 254263 2013-08-12 23:30:01Z scottl $");
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37 #include <sys/lock.h>
38 #include <sys/mutex.h>
39 #include <sys/bus.h>
40
41 #include <dev/pci/pcireg.h>
42 #include <dev/pci/pcivar.h>
43
44 #include <machine/bus.h>
45 #include <machine/resource.h>
46 #include <sys/rman.h>
47
48 #include <dev/buslogic/btreg.h>
49
50 #define BT_PCI_IOADDR PCIR_BAR(0)
51 #define BT_PCI_MEMADDR PCIR_BAR(1)
52
53 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul
54 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul
55 #define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul
56
57 static int
58 bt_pci_alloc_resources(device_t dev)
59 {
60 int type = 0, rid, zero;
61 struct resource *regs = 0;
62 struct resource *irq = 0;
63
64 #if 0
65 /* XXX Memory Mapped I/O seems to cause problems */
66 type = SYS_RES_MEMORY;
67 rid = BT_PCI_MEMADDR;
68 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
69 #else
70 type = SYS_RES_IOPORT;
71 rid = BT_PCI_IOADDR;
72 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
73 #endif
74 if (!regs)
75 return (ENOMEM);
76
77 zero = 0;
78 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
79 RF_ACTIVE | RF_SHAREABLE);
80 if (!irq) {
81 bus_release_resource(dev, type, rid, regs);
82 return (ENOMEM);
83 }
84
85 bt_init_softc(dev, regs, irq, 0);
86
87 return (0);
88 }
89
90 static void
91 bt_pci_release_resources(device_t dev)
92 {
93 struct bt_softc *bt = device_get_softc(dev);
94
95 if (bt->port)
96 /* XXX can't cope with memory registers anyway */
97 bus_release_resource(dev, SYS_RES_IOPORT,
98 BT_PCI_IOADDR, bt->port);
99 if (bt->irq)
100 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
101 bt_free_softc(dev);
102 }
103
104 static int
105 bt_pci_probe(device_t dev)
106 {
107 switch (pci_get_devid(dev)) {
108 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER:
109 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC:
110 {
111 struct bt_softc *bt = device_get_softc(dev);
112 pci_info_data_t pci_info;
113 int error;
114
115 error = bt_pci_alloc_resources(dev);
116 if (error)
117 return (error);
118
119 /*
120 * Determine if an ISA compatible I/O port has been
121 * enabled. If so, record the port so it will not
122 * be probed by our ISA probe. If the PCI I/O port
123 * was not set to the compatibility port, disable it.
124 */
125 error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO,
126 /*param*/NULL, /*paramlen*/0,
127 (u_int8_t*)&pci_info, sizeof(pci_info),
128 DEFAULT_CMD_TIMEOUT);
129 if (error == 0
130 && pci_info.io_port < BIO_DISABLED) {
131 bt_mark_probed_bio(pci_info.io_port);
132 if (rman_get_start(bt->port) !=
133 bt_iop_from_bio(pci_info.io_port)) {
134 u_int8_t new_addr;
135
136 new_addr = BIO_DISABLED;
137 bt_cmd(bt, BOP_MODIFY_IO_ADDR,
138 /*param*/&new_addr,
139 /*paramlen*/1, /*reply_buf*/NULL,
140 /*reply_len*/0,
141 DEFAULT_CMD_TIMEOUT);
142 }
143 }
144 bt_pci_release_resources(dev);
145 device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter");
146 return (BUS_PROBE_DEFAULT);
147 }
148 default:
149 break;
150 }
151
152 return (ENXIO);
153 }
154
155 static int
156 bt_pci_attach(device_t dev)
157 {
158 struct bt_softc *bt = device_get_softc(dev);
159 int error;
160
161 /* Initialize softc */
162 error = bt_pci_alloc_resources(dev);
163 if (error) {
164 device_printf(dev, "can't allocate resources in bt_pci_attach\n");
165 return error;
166 }
167
168 /* Allocate a dmatag for our CCB DMA maps */
169 if (bus_dma_tag_create( /* PCI parent */ bus_get_dma_tag(dev),
170 /* alignemnt */ 1,
171 /* boundary */ 0,
172 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
173 /* highaddr */ BUS_SPACE_MAXADDR,
174 /* filter */ NULL,
175 /* filterarg */ NULL,
176 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
177 /* nsegments */ ~0,
178 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
179 /* flags */ 0,
180 /* lockfunc */ NULL,
181 /* lockarg */ NULL,
182 &bt->parent_dmat) != 0) {
183 bt_pci_release_resources(dev);
184 return (ENOMEM);
185 }
186
187 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
188 bt_pci_release_resources(dev);
189 return (ENXIO);
190 }
191
192 error = bt_attach(dev);
193
194 if (error) {
195 bt_pci_release_resources(dev);
196 return (error);
197 }
198
199 return (0);
200 }
201
202 static device_method_t bt_pci_methods[] = {
203 /* Device interface */
204 DEVMETHOD(device_probe, bt_pci_probe),
205 DEVMETHOD(device_attach, bt_pci_attach),
206
207 { 0, 0 }
208 };
209
210 static driver_t bt_pci_driver = {
211 "bt",
212 bt_pci_methods,
213 sizeof(struct bt_softc),
214 };
215
216 static devclass_t bt_devclass;
217
218 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0);
219 MODULE_DEPEND(bt, pci, 1, 1, 1);
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