cy_pci.c revision 128800 
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
28/*
29 * Cyclades Y PCI serial interface driver
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD: head/sys/dev/cy/cy_pci.c 128800 2004-05-01 18:09:16Z bde $");
34
35#include "opt_cy_pci_fastintr.h"
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/kernel.h>
40#include <sys/bus.h>
41
42#include <machine/bus.h>
43#include <sys/rman.h>
44#include <machine/resource.h>
45
46#include <vm/vm.h>
47#include <vm/pmap.h>
48
49#include <dev/pci/pcivar.h>
50
51#include <dev/cy/cyvar.h>
52
53#define	CY_PCI_BASE_ADDR0		0x10
54#define	CY_PCI_BASE_ADDR1		0x14
55#define	CY_PCI_BASE_ADDR2		0x18
56
57#define	CY_PLX_9050_ICS			0x4c
58#define	CY_PLX_9060_ICS			0x68
59#define	CY_PLX_9050_ICS_IENABLE		0x040
60#define	CY_PLX_9050_ICS_LOCAL_IENABLE	0x001
61#define	CY_PLX_9050_ICS_LOCAL_IPOLARITY	0x002
62#define	CY_PLX_9060_ICS_IENABLE		0x100
63#define	CY_PLX_9060_ICS_LOCAL_IENABLE	0x800
64
65/* Cyclom-Y Custom Register for PLX ID. */
66#define	PLX_VER				0x3400
67#define	PLX_9050			0x0b
68#define	PLX_9060			0x0c
69#define	PLX_9080			0x0d
70
71static int	cy_pci_attach(device_t dev);
72static int	cy_pci_probe(device_t dev);
73
74static 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
82static driver_t cy_pci_driver = {
83	cy_driver_name,
84	cy_pci_methods,
85	0,
86};
87
88DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0);
89MODULE_DEPEND(cy, pci, 1, 1, 1);
90
91static int
92cy_pci_probe(dev)
93	device_t dev;
94{
95	u_int32_t device_id;
96
97	device_id = pci_get_devid(dev);
98	device_id &= ~0x00060000;
99	if (device_id != 0x0100120e && device_id != 0x0101120e)
100		return (ENXIO);
101	device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter");
102	return (0);
103}
104
105static int
106cy_pci_attach(dev)
107	device_t dev;
108{
109	struct resource *ioport_res, *irq_res, *mem_res;
110	void *irq_cookie, *vaddr, *vsc;
111	u_int32_t ioport;
112	int irq_setup, ioport_rid, irq_rid, mem_rid;
113	u_char plx_ver;
114
115	ioport_res = NULL;
116	irq_res = NULL;
117	mem_res = NULL;
118
119	ioport_rid = CY_PCI_BASE_ADDR1;
120	ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid,
121	    0ul, ~0ul, 0ul, RF_ACTIVE);
122	if (ioport_res == NULL) {
123		device_printf(dev, "ioport resource allocation failed\n");
124		goto fail;
125	}
126	ioport = rman_get_start(ioport_res);
127
128	mem_rid = CY_PCI_BASE_ADDR2;
129	mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
130	    0ul, ~0ul, 0ul, RF_ACTIVE);
131	if (mem_res == NULL) {
132		device_printf(dev, "memory resource allocation failed\n");
133		goto fail;
134	}
135	vaddr = rman_get_virtual(mem_res);
136
137	vsc = cyattach_common(vaddr, 1);
138	if (vsc == NULL) {
139		device_printf(dev, "no ports found!\n");
140		goto fail;
141	}
142
143	irq_rid = 0;
144	irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
145	    RF_SHAREABLE | RF_ACTIVE);
146	if (irq_res == NULL) {
147		device_printf(dev, "interrupt resource allocation failed\n");
148		goto fail;
149	}
150#ifdef CY_PCI_FASTINTR
151	irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST,
152	    cyintr, vsc, &irq_cookie);
153#else
154	irq_setup = ENXIO;
155#endif
156	if (irq_setup != 0)
157		irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY,
158		    cyintr, vsc, &irq_cookie);
159	if (irq_setup != 0) {
160		device_printf(dev, "interrupt setup failed\n");
161		goto fail;
162	}
163
164	/*
165	 * Enable the "local" interrupt input to generate a
166	 * PCI interrupt.
167	 */
168	plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f;
169	switch (plx_ver) {
170	case PLX_9050:
171		outw(ioport + CY_PLX_9050_ICS,
172		    CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE |
173		    CY_PLX_9050_ICS_LOCAL_IPOLARITY);
174		break;
175	case PLX_9060:
176	case PLX_9080:
177	default:		/* Old board, use PLX_9060 values. */
178		outw(ioport + CY_PLX_9060_ICS,
179		    inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE |
180		    CY_PLX_9060_ICS_LOCAL_IENABLE);
181		break;
182	}
183
184	return (0);
185
186fail:
187	if (ioport_res != NULL)
188		bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid,
189		    ioport_res);
190	if (irq_res != NULL)
191		bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
192	if (mem_res != NULL)
193		bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
194	return (ENXIO);
195}
196