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 * $FreeBSD$
30 */
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/bus.h>
36
37 #include <pci/pcireg.h>
38 #include <pci/pcivar.h>
39
40 #include <machine/bus_memio.h>
41 #include <machine/bus_pio.h>
42 #include <machine/bus.h>
43 #include <machine/resource.h>
44 #include <sys/rman.h>
45
46 #include <dev/buslogic/btreg.h>
47
48 #define BT_PCI_IOADDR PCIR_MAPS
49 #define BT_PCI_MEMADDR PCIR_MAPS + 4
50
51 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul
52 #define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul
53 #define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul
54
55 static int
56 bt_pci_alloc_resources(device_t dev)
57 {
58 int command, type = 0, rid, zero;
59 struct resource *regs = 0;
60 struct resource *irq = 0;
61
62 command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
63 #if 0
64 /* XXX Memory Mapped I/O seems to cause problems */
65 if (command & PCIM_CMD_MEMEN) {
66 type = SYS_RES_MEMORY;
67 rid = BT_PCI_MEMADDR;
68 regs = bus_alloc_resource(dev, type, &rid,
69 0, ~0, 1, RF_ACTIVE);
70 }
71 #else
72 if (!regs && (command & PCIM_CMD_PORTEN)) {
73 type = SYS_RES_IOPORT;
74 rid = BT_PCI_IOADDR;
75 regs = bus_alloc_resource(dev, type, &rid,
76 0, ~0, 1, RF_ACTIVE);
77 }
78 #endif
79 if (!regs)
80 return (ENOMEM);
81
82 zero = 0;
83 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &zero,
84 0, ~0, 1, 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 /* XXX Should be a child of the PCI bus dma tag */
176 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
177 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
178 /*highaddr*/BUS_SPACE_MAXADDR,
179 /*filter*/NULL, /*filterarg*/NULL,
180 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
181 /*nsegments*/BUS_SPACE_UNRESTRICTED,
182 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
183 /*flags*/0, &bt->parent_dmat) != 0) {
184 bt_pci_release_resources(dev);
185 return (ENOMEM);
186 }
187
188 /*
189 * Protect ourself from spurrious interrupts during
190 * intialization and attach. We should really rely
191 * on interrupts during attach, but we don't have
192 * access to our interrupts during ISA probes, so until
193 * that changes, we mask our interrupts during attach
194 * too.
195 */
196 opri = splcam();
197
198 if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
199 bt_pci_release_resources(dev);
200 splx(opri);
201 return (ENXIO);
202 }
203
204 error = bt_attach(dev);
205 splx(opri);
206
207 if (error) {
208 bt_pci_release_resources(dev);
209 return (error);
210 }
211
212 return (0);
213 }
214
215 static device_method_t bt_pci_methods[] = {
216 /* Device interface */
217 DEVMETHOD(device_probe, bt_pci_probe),
218 DEVMETHOD(device_attach, bt_pci_attach),
219
220 { 0, 0 }
221 };
222
223 static driver_t bt_pci_driver = {
224 "bt",
225 bt_pci_methods,
226 sizeof(struct bt_softc),
227 };
228
229 static devclass_t bt_devclass;
230
231 DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0);
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