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/9.1/sys/dev/buslogic/bt_pci.c 233024 2012-03-16 08:46:58Z 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 command, type = 0, rid, zero;
61 struct resource *regs = 0;
62 struct resource *irq = 0;
63
64 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
65 #if 0
66 /* XXX Memory Mapped I/O seems to cause problems */
67 if (command & PCIM_CMD_MEMEN) {
68 type = SYS_RES_MEMORY;
69 rid = BT_PCI_MEMADDR;
70 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
71 }
72 #else
73 if (!regs && (command & PCIM_CMD_PORTEN)) {
74 type = SYS_RES_IOPORT;
75 rid = BT_PCI_IOADDR;
76 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
77 }
78 #endif
79 if (!regs)
80 return (ENOMEM);
81
82 zero = 0;
83 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
84 RF_ACTIVE | RF_SHAREABLE);
85 if (!irq) {
86 bus_release_resource(dev, type, rid, regs);
87 return (ENOMEM);
88 }
89
90 bt_init_softc(dev, regs, irq, 0);
91
92 return (0);
93 }
94
95 static void
96 bt_pci_release_resources(device_t dev)
97 {
98 struct bt_softc *bt = device_get_softc(dev);
99
100 if (bt->port)
101 /* XXX can't cope with memory registers anyway */
102 bus_release_resource(dev, SYS_RES_IOPORT,
103 BT_PCI_IOADDR, bt->port);
104 if (bt->irq)
105 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
106 bt_free_softc(dev);
107 }
108
109 static int
110 bt_pci_probe(device_t dev)
111 {
112 switch (pci_get_devid(dev)) {
113 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER:
114 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC:
115 {
116 struct bt_softc *bt = device_get_softc(dev);
117 pci_info_data_t pci_info;
118 int error;
119
120 error = bt_pci_alloc_resources(dev);
121 if (error)
122 return (error);
123
124 /*
125 * Determine if an ISA compatible I/O port has been
126 * enabled. If so, record the port so it will not
127 * be probed by our ISA probe. If the PCI I/O port
128 * was not set to the compatibility port, disable it.
129 */
130 error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO,
131 /*param*/NULL, /*paramlen*/0,
132 (u_int8_t*)&pci_info, sizeof(pci_info),
133 DEFAULT_CMD_TIMEOUT);
134 if (error == 0
135 && pci_info.io_port < BIO_DISABLED) {
136 bt_mark_probed_bio(pci_info.io_port);
137 if (rman_get_start(bt->port) !=
138 bt_iop_from_bio(pci_info.io_port)) {
139 u_int8_t new_addr;
140
141 new_addr = BIO_DISABLED;
142 bt_cmd(bt, BOP_MODIFY_IO_ADDR,
143 /*param*/&new_addr,
144 /*paramlen*/1, /*reply_buf*/NULL,
145 /*reply_len*/0,
146 DEFAULT_CMD_TIMEOUT);
147 }
148 }
149 bt_pci_release_resources(dev);
150 device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter");
151 return (0);
152 }
153 default:
154 break;
155 }
156
157 return (ENXIO);
158 }
159
160 static int
161 bt_pci_attach(device_t dev)
162 {
163 struct bt_softc *bt = device_get_softc(dev);
164 int opri;
165 int error;
166
167 /* Initialize softc */
168 error = bt_pci_alloc_resources(dev);
169 if (error) {
170 device_printf(dev, "can't allocate resources in bt_pci_attach\n");
171 return error;
172 }
173
174 /* Allocate a dmatag for our CCB DMA maps */
175 if (bus_dma_tag_create( /* PCI parent */ bus_get_dma_tag(dev),
176 /* alignemnt */ 1,
177 /* boundary */ 0,
178 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
179 /* highaddr */ BUS_SPACE_MAXADDR,
180 /* filter */ NULL,
181 /* filterarg */ NULL,
182 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
183 /* nsegments */ ~0,
184 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
185 /* flags */ 0,
186 /* lockfunc */ busdma_lock_mutex,
187 /* lockarg */ &Giant,
188 &bt->parent_dmat) != 0) {
189 bt_pci_release_resources(dev);
190 return (ENOMEM);
191 }
192
193 /*
194 * Protect ourself from spurrious interrupts during
195 * intialization and attach. We should really rely
196 * on interrupts during attach, but we don't have
197 * access to our interrupts during ISA probes, so until
198 * that changes, we mask our interrupts during attach
199 * too.
200 */
201 opri = splcam();
202
203 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
204 bt_pci_release_resources(dev);
205 splx(opri);
206 return (ENXIO);
207 }
208
209 error = bt_attach(dev);
210 splx(opri);
211
212 if (error) {
213 bt_pci_release_resources(dev);
214 return (error);
215 }
216
217 return (0);
218 }
219
220 static device_method_t bt_pci_methods[] = {
221 /* Device interface */
222 DEVMETHOD(device_probe, bt_pci_probe),
223 DEVMETHOD(device_attach, bt_pci_attach),
224
225 { 0, 0 }
226 };
227
228 static driver_t bt_pci_driver = {
229 "bt",
230 bt_pci_methods,
231 sizeof(struct bt_softc),
232 };
233
234 static devclass_t bt_devclass;
235
236 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0);
237 MODULE_DEPEND(bt, pci, 1, 1, 1);
Cache object: 8441b9cb5b50887e82c815b3f7625f28
|