FreeBSD/Linux Kernel Cross Reference
sys/pci/cy_pci.c
1 /*
2 * Copyright (c) 1996, David Greenman
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: releng/5.0/sys/pci/cy_pci.c 92739 2002-03-20 02:08:01Z alfred $
28 */
29
30 /*
31 * Cyclades Y PCI serial interface driver
32 */
33
34 #include "opt_cy_pci_fastintr.h"
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/bus.h>
40
41 #include <machine/bus.h>
42 #include <sys/rman.h>
43 #include <machine/resource.h>
44
45 #include <vm/vm.h>
46 #include <vm/pmap.h>
47
48 #include <dev/pci/pcivar.h>
49
50 #define CY_PCI_BASE_ADDR0 0x10
51 #define CY_PCI_BASE_ADDR1 0x14
52 #define CY_PCI_BASE_ADDR2 0x18
53
54 #define CY_PLX_9050_ICS 0x4c
55 #define CY_PLX_9060_ICS 0x68
56 #define CY_PLX_9050_ICS_IENABLE 0x040
57 #define CY_PLX_9050_ICS_LOCAL_IENABLE 0x001
58 #define CY_PLX_9050_ICS_LOCAL_IPOLARITY 0x002
59 #define CY_PLX_9060_ICS_IENABLE 0x100
60 #define CY_PLX_9060_ICS_LOCAL_IENABLE 0x800
61
62 /* Cyclom-Y Custom Register for PLX ID. */
63 #define PLX_VER 0x3400
64 #define PLX_9050 0x0b
65 #define PLX_9060 0x0c
66 #define PLX_9080 0x0d
67
68 extern int cyattach_common(void *, int); /* Not exactly correct */
69 extern void cyintr(int);
70
71 static int cy_pci_attach(device_t dev);
72 static int cy_pci_probe(device_t dev);
73
74 static device_method_t cy_pci_methods[] = {
75 /* Device interface. */
76 DEVMETHOD(device_probe, cy_pci_probe),
77 DEVMETHOD(device_attach, cy_pci_attach),
78
79 { 0, 0 }
80 };
81
82 static driver_t cy_pci_driver = {
83 "cy",
84 cy_pci_methods,
85 0,
86 };
87
88 static devclass_t cy_devclass;
89
90 DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0);
91
92 static int
93 cy_pci_probe(dev)
94 device_t dev;
95 {
96 u_int32_t device_id;
97
98 device_id = pci_get_devid(dev);
99 device_id &= ~0x00060000;
100 if (device_id != 0x0100120e && device_id != 0x0101120e)
101 return (ENXIO);
102 device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter");
103 return (0);
104 }
105
106 static int
107 cy_pci_attach(dev)
108 device_t dev;
109 {
110 struct resource *ioport_res, *irq_res, *mem_res;
111 void *irq_cookie, *vaddr;
112 u_int32_t ioport;
113 int adapter, irq_setup, ioport_rid, irq_rid, mem_rid;
114 u_char plx_ver;
115
116 ioport_res = NULL;
117 irq_res = NULL;
118 mem_res = NULL;
119
120 ioport_rid = CY_PCI_BASE_ADDR1;
121 ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid,
122 0ul, ~0ul, 0ul, RF_ACTIVE);
123 if (ioport_res == NULL) {
124 device_printf(dev, "ioport resource allocation failed\n");
125 goto fail;
126 }
127 ioport = rman_get_start(ioport_res);
128
129 mem_rid = CY_PCI_BASE_ADDR2;
130 mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
131 0ul, ~0ul, 0ul, RF_ACTIVE);
132 if (mem_res == NULL) {
133 device_printf(dev, "memory resource allocation failed\n");
134 goto fail;
135 }
136 vaddr = rman_get_virtual(mem_res);
137
138 adapter = cyattach_common(vaddr, 1);
139 if (adapter < 0) {
140 device_printf(dev, "no ports found!\n");
141 goto fail;
142 }
143
144 /*
145 * Allocate our interrupt.
146 * XXX Using the ISA interrupt handler directly is a bit of a violation
147 * since it doesn't actually take the same argument. For PCI, the
148 * argument is a void * token, but for ISA it is a unit. Since
149 * there is no overlap in PCI/ISA unit numbers for this driver, and
150 * since the ISA driver must handle the interrupt anyway, we use
151 * the unit number as the token even for PCI.
152 */
153 irq_rid = 0;
154 irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
155 RF_SHAREABLE | RF_ACTIVE);
156 if (irq_res == NULL) {
157 device_printf(dev, "interrupt resource allocation failed\n");
158 goto fail;
159 }
160 #ifdef CY_PCI_FASTINTR
161 irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST,
162 (driver_intr_t *)cyintr, (void *)adapter, &irq_cookie);
163 #else
164 irq_setup = ENXIO;
165 #endif
166 if (irq_setup != 0)
167 irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY,
168 (driver_intr_t *)cyintr, (void *)adapter, &irq_cookie);
169 if (irq_setup != 0) {
170 device_printf(dev, "interrupt setup failed\n");
171 goto fail;
172 }
173
174 /*
175 * Enable the "local" interrupt input to generate a
176 * PCI interrupt.
177 */
178 plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f;
179 switch (plx_ver) {
180 case PLX_9050:
181 outw(ioport + CY_PLX_9050_ICS,
182 CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE |
183 CY_PLX_9050_ICS_LOCAL_IPOLARITY);
184 break;
185 case PLX_9060:
186 case PLX_9080:
187 default: /* Old board, use PLX_9060 values. */
188 outw(ioport + CY_PLX_9060_ICS,
189 inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE |
190 CY_PLX_9060_ICS_LOCAL_IENABLE);
191 break;
192 }
193
194 return (0);
195
196 fail:
197 if (ioport_res != NULL)
198 bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid,
199 ioport_res);
200 if (irq_res != NULL)
201 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
202 if (mem_res != NULL)
203 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
204 return (ENXIO);
205 }
Cache object: 8c13cf2d29cd6d9eb8fa1b496b9378ad
|