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 * $FreeBSD$
28 */
29
30 /*
31 * Cyclades Y PCI serial interface driver
32 */
33
34 #include "pci.h"
35 #if NPCI > 0
36
37 #include "opt_cy_pci_fastintr.h"
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/interrupt.h>
42 #include <sys/kernel.h>
43 #include <vm/vm.h>
44 #include <vm/pmap.h>
45
46 #include <pci/pcivar.h>
47
48 #include <pci/cy_pcireg.h>
49
50 static const char *cy_probe __P((pcici_t, pcidi_t));
51 static void cy_attach __P((pcici_t, int));
52
53 extern int cyattach_common(void *, int); /* Not exactly correct */
54 extern void cyintr(int);
55
56 static u_long cy_count;
57
58 static struct pci_device cy_device = {
59 "cy",
60 cy_probe,
61 cy_attach,
62 &cy_count,
63 NULL
64 };
65 DATA_SET(pcidevice_set, cy_device);
66
67 static const char *
68 cy_probe(config_id, device_id)
69 pcici_t config_id;
70 pcidi_t device_id;
71 {
72 device_id &= ~0x00060000;
73 if (device_id == 0x0100120e || device_id == 0x0101120e)
74 return ("Cyclades Cyclom-Y Serial Adapter");
75 return (NULL);
76 }
77
78 static void
79 cy_attach(config_id, unit)
80 pcici_t config_id;
81 int unit;
82 {
83 vm_offset_t paddr;
84 void *vaddr;
85 u_int32_t ioport;
86 int adapter;
87 u_char plx_ver;
88
89 ioport = (u_int32_t) pci_conf_read(config_id, CY_PCI_BASE_ADDR1) & ~0x3;
90 paddr = pci_conf_read(config_id, CY_PCI_BASE_ADDR2) & ~0xf;
91 #if 0
92 if (!pci_map_mem(config_id, CY_PCI_BASE_ADDR2, &vaddr, &paddr)) {
93 printf("cy%d: couldn't map shared memory\n", unit);
94 return;
95 };
96 #endif
97 vaddr = pmap_mapdev(paddr, 0x4000);
98
99 adapter = cyattach_common(vaddr, 1);
100 if (adapter < 0) {
101 /*
102 * No ports found. Release resources and punt.
103 */
104 printf("cy%d: no ports found!\n", unit);
105 goto fail;
106 }
107
108 /*
109 * Allocate our interrupt.
110 * XXX Using the ISA interrupt handler directly is a bit of a violation
111 * since it doesn't actually take the same argument. For PCI, the
112 * argument is a void * token, but for ISA it is a unit. Since
113 * there is no overlap in PCI/ISA unit numbers for this driver, and
114 * since the ISA driver must handle the interrupt anyway, we use
115 * the unit number as the token even for PCI.
116 */
117 if (
118 #ifdef CY_PCI_FASTINTR
119 !pci_map_int_right(config_id, (pci_inthand_t *)cyintr,
120 (void *)adapter, &tty_imask,
121 INTR_EXCL | INTR_FAST) &&
122 #endif
123 !pci_map_int_right(config_id, (pci_inthand_t *)cyintr,
124 (void *)adapter, &tty_imask, 0)) {
125 printf("cy%d: couldn't map interrupt\n", unit);
126 goto fail;
127 }
128
129 /*
130 * Enable the "local" interrupt input to generate a
131 * PCI interrupt.
132 */
133 plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f;
134 switch (plx_ver) {
135 case PLX_9050:
136 outw(ioport + CY_PLX_9050_ICS,
137 CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE |
138 CY_PLX_9050_ICS_LOCAL_IPOLARITY);
139 break;
140 case PLX_9060:
141 case PLX_9080:
142 default: /* Old board, use PLX_9060 values. */
143 outw(ioport + CY_PLX_9060_ICS,
144 inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE |
145 CY_PLX_9060_ICS_LOCAL_IENABLE);
146 break;
147 }
148
149 return;
150
151 fail:
152 /* XXX should release any allocated virtual memory */
153 return;
154 }
155
156 #endif /* NPCI > 0 */
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