summaryrefslogtreecommitdiffstats
path: root/sys/pci/cy_pci.c
blob: c4f3c89452a88e60f9c27c80856a4e7b83afa64f (plain)
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
/*
 * Copyright (c) 1996, David Greenman
 * 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 unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 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.
 *
 *	$Id: cy_pci.c,v 1.11 1999/04/15 00:13:20 alex Exp $
 */

/*
 * Cyclades Y PCI serial interface driver
 */

#include "pci.h"
#if NPCI > 0

#include "opt_cy_pci_fastintr.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/interrupt.h>
#include <sys/kernel.h>
#include <vm/vm.h>
#include <vm/pmap.h>

#include <pci/pcivar.h>

#include <pci/cy_pcireg.h>

static const char *cy_probe		__P((pcici_t, pcidi_t));
static void cy_attach		__P((pcici_t, int));

extern int cyattach_common(void *, int); /* Not exactly correct */
extern void cyintr(int);

static u_long cy_count;

static struct pci_device cy_device = {
        "cy",
        cy_probe,
        cy_attach,
        &cy_count,
        NULL
};
#ifdef COMPAT_PCI_DRIVER
COMPAT_PCI_DRIVER(cy_pci, cy_device);
#else
DATA_SET(pcidevice_set, cy_device);
#endif /* COMPAT_PCI_DRIVER */

static const char *
cy_probe(config_id, device_id)
	pcici_t config_id;
	pcidi_t device_id;
{
	if ((device_id & 0xffff) == CY_VENDORID_CYCLADES &&
	    ((device_id >> 16) == CY_DEVICEID_CYCLOM_Y_1 ||
	     (device_id >> 16) == CY_DEVICEID_CYCLOM_Y_2))
		return ("Cyclades Cyclom-Y Serial Adapter");
	return NULL;
}

static void
cy_attach(config_id, unit)
	pcici_t config_id;
	int unit;
{
	vm_offset_t paddr;
	void *vaddr;
	u_int32_t ioport;
	int adapter;
	u_char plx_ver;

	ioport = (u_int32_t) pci_conf_read(config_id, CY_PCI_BASE_ADDR1) & ~0x3;
	paddr = pci_conf_read(config_id, CY_PCI_BASE_ADDR2) & ~0xf;
#if 0
	if (!pci_map_mem(config_id, CY_PCI_BASE_ADDR2, &vaddr, &paddr)) {
		printf("cy%d: couldn't map shared memory\n", unit);
		return;
	};
#endif
	vaddr = pmap_mapdev(paddr, 0x4000);

	adapter = cyattach_common(vaddr, 1);
	if (adapter < 0) {
		/*
		 * No ports found. Release resources and punt.
		 */
		printf("cy%d: no ports found!\n", unit);
		goto fail;
	}

	/*
	 * Allocate our interrupt.
	 * XXX	Using the ISA interrupt handler directly is a bit of a violation
	 *	since it doesn't actually take the same argument. For PCI, the
	 *	argument is a void * token, but for ISA it is a unit. Since
	 *	there is no overlap in PCI/ISA unit numbers for this driver, and
	 *	since the ISA driver must handle the interrupt anyway, we use
	 *	the unit number as the token even for PCI.
	 */
	if (
#ifdef CY_PCI_FASTINTR
	    !pci_map_int_right(config_id, (pci_inthand_t *)cyintr,
			       (void *)adapter, &tty_imask,
			       INTR_EXCL | INTR_FAST) &&
#endif
	    !pci_map_int_right(config_id, (pci_inthand_t *)cyintr,
			       (void *)adapter, &tty_imask, 0)) {
		printf("cy%d: couldn't map interrupt\n", unit);
		goto fail;
	}

	/*
	 * Enable the "local" interrupt input to generate a
	 * PCI interrupt.
	 */
	plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f;
	switch (plx_ver) {
	case PLX_9050:
		outw(ioport + CY_PLX_9050_ICS, 
		    inw(ioport + CY_PLX_9050_ICS) | CY_PLX_9050_ICS_IENABLE |
		    CY_PLX_9050_ICS_LOCAL_IENABLE);
		break;
	case PLX_9060:
	case PLX_9080:
	default:		/* Old board, use PLX_9060 values. */
		outw(ioport + CY_PLX_9060_ICS,
		    inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE |
		    CY_PLX_9060_ICS_LOCAL_IENABLE);
		break;
	}

	return;

fail:
	/* XXX should release any allocated virtual memory */
	return;
}

#endif /* NPCI > 0 */
OpenPOWER on IntegriCloud