1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/*-
* Product specific probe and attach routines for:
* Buslogic BT946, BT948, BT956, BT958 SCSI controllers
*
* Copyright (c) 1995, 1997, 1998 Justin T. Gibbs
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/buslogic/btreg.h>
#define BT_PCI_IOADDR PCIR_BAR(0)
#define BT_PCI_MEMADDR PCIR_BAR(1)
#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul
#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul
#define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul
static int
bt_pci_alloc_resources(device_t dev)
{
int command, type = 0, rid, zero;
struct resource *regs = 0;
struct resource *irq = 0;
command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
#if 0
/* XXX Memory Mapped I/O seems to cause problems */
if (command & PCIM_CMD_MEMEN) {
type = SYS_RES_MEMORY;
rid = BT_PCI_MEMADDR;
regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
}
#else
if (!regs && (command & PCIM_CMD_PORTEN)) {
type = SYS_RES_IOPORT;
rid = BT_PCI_IOADDR;
regs = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
}
#endif
if (!regs)
return (ENOMEM);
zero = 0;
irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
RF_ACTIVE | RF_SHAREABLE);
if (!irq) {
bus_release_resource(dev, type, rid, regs);
return (ENOMEM);
}
bt_init_softc(dev, regs, irq, 0);
return (0);
}
static void
bt_pci_release_resources(device_t dev)
{
struct bt_softc *bt = device_get_softc(dev);
if (bt->port)
/* XXX can't cope with memory registers anyway */
bus_release_resource(dev, SYS_RES_IOPORT,
BT_PCI_IOADDR, bt->port);
if (bt->irq)
bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
bt_free_softc(dev);
}
static int
bt_pci_probe(device_t dev)
{
switch (pci_get_devid(dev)) {
case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER:
case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC:
{
struct bt_softc *bt = device_get_softc(dev);
pci_info_data_t pci_info;
int error;
error = bt_pci_alloc_resources(dev);
if (error)
return (error);
/*
* Determine if an ISA compatible I/O port has been
* enabled. If so, record the port so it will not
* be probed by our ISA probe. If the PCI I/O port
* was not set to the compatibility port, disable it.
*/
error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO,
/*param*/NULL, /*paramlen*/0,
(u_int8_t*)&pci_info, sizeof(pci_info),
DEFAULT_CMD_TIMEOUT);
if (error == 0
&& pci_info.io_port < BIO_DISABLED) {
bt_mark_probed_bio(pci_info.io_port);
if (rman_get_start(bt->port) !=
bt_iop_from_bio(pci_info.io_port)) {
u_int8_t new_addr;
new_addr = BIO_DISABLED;
bt_cmd(bt, BOP_MODIFY_IO_ADDR,
/*param*/&new_addr,
/*paramlen*/1, /*reply_buf*/NULL,
/*reply_len*/0,
DEFAULT_CMD_TIMEOUT);
}
}
bt_pci_release_resources(dev);
device_set_desc(dev, "Buslogic Multi-Master SCSI Host Adapter");
return (BUS_PROBE_DEFAULT);
}
default:
break;
}
return (ENXIO);
}
static int
bt_pci_attach(device_t dev)
{
struct bt_softc *bt = device_get_softc(dev);
int error;
/* Initialize softc */
error = bt_pci_alloc_resources(dev);
if (error) {
device_printf(dev, "can't allocate resources in bt_pci_attach\n");
return error;
}
/* Allocate a dmatag for our CCB DMA maps */
if (bus_dma_tag_create( /* PCI parent */ bus_get_dma_tag(dev),
/* alignemnt */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
/* nsegments */ ~0,
/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */ 0,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&bt->parent_dmat) != 0) {
bt_pci_release_resources(dev);
return (ENOMEM);
}
if (bt_probe(dev) || bt_fetch_adapter_info(dev) || bt_init(dev)) {
bt_pci_release_resources(dev);
return (ENXIO);
}
error = bt_attach(dev);
if (error) {
bt_pci_release_resources(dev);
return (error);
}
return (0);
}
static device_method_t bt_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, bt_pci_probe),
DEVMETHOD(device_attach, bt_pci_attach),
{ 0, 0 }
};
static driver_t bt_pci_driver = {
"bt",
bt_pci_methods,
sizeof(struct bt_softc),
};
static devclass_t bt_devclass;
DRIVER_MODULE(bt, pci, bt_pci_driver, bt_devclass, 0, 0);
MODULE_DEPEND(bt, pci, 1, 1, 1);
|
