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: src/sys/dev/buslogic/bt_pci.c,v 1.19 2004/05/30 20:08:28 phk Exp $");
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_memio.h>
45 #include <machine/bus_pio.h>
46 #include <machine/bus.h>
47 #include <machine/resource.h>
48 #include <sys/rman.h>
49
50 #include <dev/buslogic/btreg.h>
51
52 #define BT_PCI_IOADDR PCIR_BAR(0)
53 #define BT_PCI_MEMADDR PCIR_BAR(1)
54
55 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul
56 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul
57 #define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul
58
59 static int
60 bt_pci_alloc_resources(device_t dev)
61 {
62 int command, type = 0, rid, zero;
63 struct resource *regs = 0;
64 struct resource *irq = 0;
65
66 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
67 #if 0
68 /* XXX Memory Mapped I/O seems to cause problems */
69 if (command & PCIM_CMD_MEMEN) {
70 type = SYS_RES_MEMORY;
71 rid = BT_PCI_MEMADDR;
72 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
73 }
74 #else
75 if (!regs && (command & PCIM_CMD_PORTEN)) {
76 type = SYS_RES_IOPORT;
77 rid = BT_PCI_IOADDR;
78 regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
79 }
80 #endif
81 if (!regs)
82 return (ENOMEM);
83
84 zero = 0;
85 irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
86 RF_ACTIVE | RF_SHAREABLE);
87 if (!irq) {
88 bus_release_resource(dev, type, rid, regs);
89 return (ENOMEM);
90 }
91
92 bt_init_softc(dev, regs, irq, 0);
93
94 return (0);
95 }
96
97 static void
98 bt_pci_release_resources(device_t dev)
99 {
100 struct bt_softc *bt = device_get_softc(dev);
101
102 if (bt->port)
103 /* XXX can't cope with memory registers anyway */
104 bus_release_resource(dev, SYS_RES_IOPORT,
105 BT_PCI_IOADDR, bt->port);
106 if (bt->irq)
107 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
108 bt_free_softc(dev);
109 }
110
111 static int
112 bt_pci_probe(device_t dev)
113 {
114 switch (pci_get_devid(dev)) {
115 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER:
116 case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC:
117 {
118 struct bt_softc *bt = device_get_softc(dev);
119 pci_info_data_t pci_info;
120 int error;
121
122 error = bt_pci_alloc_resources(dev);
123 if (error)
124 return (error);
125
126 /*
127 * Determine if an ISA compatible I/O port has been
128 * enabled. If so, record the port so it will not
129 * be probed by our ISA probe. If the PCI I/O port
130 * was not set to the compatibility port, disable it.
131 */
132 error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO,
133 /*param*/NULL, /*paramlen*/0,
134 (u_int8_t*)&pci_info, sizeof(pci_info),
135 DEFAULT_CMD_TIMEOUT);
136 if (error == 0
137 && pci_info.io_port < BIO_DISABLED) {
138 bt_mark_probed_bio(pci_info.io_port);
139 if (rman_get_start(bt->port) !=
140 bt_iop_from_bio(pci_info.io_port)) {
141 u_int8_t new_addr;
142
143 new_addr = BIO_DISABLED;
144 bt_cmd(bt, BOP_MODIFY_IO_ADDR,
145 /*param*/&new_addr,
146 /*paramlen*/1, /*reply_buf*/NULL,
147 /*reply_len*/0,
148 DEFAULT_CMD_TIMEOUT);
149 }
150 }
151 bt_pci_release_resources(dev);
152 device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter");
153 return (0);
154 }
155 default:
156 break;
157 }
158
159 return (ENXIO);
160 }
161
162 static int
163 bt_pci_attach(device_t dev)
164 {
165 struct bt_softc *bt = device_get_softc(dev);
166 int opri;
167 int error;
168
169 /* Initialize softc */
170 error = bt_pci_alloc_resources(dev);
171 if (error) {
172 device_printf(dev, "can't allocate resources in bt_pci_attach\n");
173 return error;
174 }
175
176 /* Allocate a dmatag for our CCB DMA maps */
177 /* XXX Should be a child of the PCI bus dma tag */
178 if (bus_dma_tag_create( /* parent */ NULL,
179 /* alignemnt */ 1,
180 /* boundary */ 0,
181 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
182 /* highaddr */ BUS_SPACE_MAXADDR,
183 /* filter */ NULL,
184 /* filterarg */ NULL,
185 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
186 /* nsegments */ ~0,
187 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
188 /* flags */ 0,
189 /* lockfunc */ busdma_lock_mutex,
190 /* lockarg */ &Giant,
191 &bt->parent_dmat) != 0) {
192 bt_pci_release_resources(dev);
193 return (ENOMEM);
194 }
195
196 /*
197 * Protect ourself from spurrious interrupts during
198 * intialization and attach. We should really rely
199 * on interrupts during attach, but we don't have
200 * access to our interrupts during ISA probes, so until
201 * that changes, we mask our interrupts during attach
202 * too.
203 */
204 opri = splcam();
205
206 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
207 bt_pci_release_resources(dev);
208 splx(opri);
209 return (ENXIO);
210 }
211
212 error = bt_attach(dev);
213 splx(opri);
214
215 if (error) {
216 bt_pci_release_resources(dev);
217 return (error);
218 }
219
220 return (0);
221 }
222
223 static device_method_t bt_pci_methods[] = {
224 /* Device interface */
225 DEVMETHOD(device_probe, bt_pci_probe),
226 DEVMETHOD(device_attach, bt_pci_attach),
227
228 { 0, 0 }
229 };
230
231 static driver_t bt_pci_driver = {
232 "bt",
233 bt_pci_methods,
234 sizeof(struct bt_softc),
235 };
236
237 static devclass_t bt_devclass;
238
239 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0);
Cache object: b25685d8f570c87edb98dc461ad85f71
|