cy_pci.c revision 123104 
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 123104 2003-12-02 12:36:00Z 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#define CY_PCI_BASE_ADDR0		0x10
52#define CY_PCI_BASE_ADDR1		0x14
53#define CY_PCI_BASE_ADDR2		0x18
54
55#define CY_PLX_9050_ICS			0x4c
56#define CY_PLX_9060_ICS			0x68
57#define CY_PLX_9050_ICS_IENABLE		0x040
58#define CY_PLX_9050_ICS_LOCAL_IENABLE	0x001
59#define CY_PLX_9050_ICS_LOCAL_IPOLARITY	0x002
60#define CY_PLX_9060_ICS_IENABLE		0x100
61#define CY_PLX_9060_ICS_LOCAL_IENABLE	0x800
62
63/* Cyclom-Y Custom Register for PLX ID. */
64#define	PLX_VER				0x3400
65#define	PLX_9050			0x0b
66#define	PLX_9060			0x0c
67#define	PLX_9080			0x0d
68
69void	*cyattach_common(u_char volatile *iobase, int cy_align);
70driver_intr_t	cyintr;
71
72static int	cy_pci_attach(device_t dev);
73static int	cy_pci_probe(device_t dev);
74
75static device_method_t cy_pci_methods[] = {
76	/* Device interface. */
77	DEVMETHOD(device_probe,		cy_pci_probe),
78	DEVMETHOD(device_attach,	cy_pci_attach),
79
80	{ 0, 0 }
81};
82
83static driver_t cy_pci_driver = {
84	"cy",
85	cy_pci_methods,
86	0,
87};
88
89static devclass_t	cy_devclass;
90
91DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0);
92MODULE_DEPEND(cy, pci, 1, 1, 1);
93
94static int
95cy_pci_probe(dev)
96	device_t dev;
97{
98	u_int32_t device_id;
99
100	device_id = pci_get_devid(dev);
101	device_id &= ~0x00060000;
102	if (device_id != 0x0100120e && device_id != 0x0101120e)
103		return (ENXIO);
104	device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter");
105	return (0);
106}
107
108static int
109cy_pci_attach(dev)
110	device_t dev;
111{
112	struct resource *ioport_res, *irq_res, *mem_res;
113	void *irq_cookie, *vaddr, *vsc;
114	u_int32_t ioport;
115	int irq_setup, ioport_rid, irq_rid, mem_rid;
116	u_char plx_ver;
117
118	ioport_res = NULL;
119	irq_res = NULL;
120	mem_res = NULL;
121
122	ioport_rid = CY_PCI_BASE_ADDR1;
123	ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid,
124	    0ul, ~0ul, 0ul, RF_ACTIVE);
125	if (ioport_res == NULL) {
126		device_printf(dev, "ioport resource allocation failed\n");
127		goto fail;
128	}
129	ioport = rman_get_start(ioport_res);
130
131	mem_rid = CY_PCI_BASE_ADDR2;
132	mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
133	     0ul, ~0ul, 0ul, RF_ACTIVE);
134	if (mem_res == NULL) {
135		device_printf(dev, "memory resource allocation failed\n");
136		goto fail;
137	}
138	vaddr = rman_get_virtual(mem_res);
139
140	vsc = cyattach_common(vaddr, 1);
141	if (vsc == NULL) {
142		device_printf(dev, "no ports found!\n");
143		goto fail;
144	}
145
146	irq_rid = 0;
147	irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
148	    RF_SHAREABLE | RF_ACTIVE);
149	if (irq_res == NULL) {
150		device_printf(dev, "interrupt resource allocation failed\n");
151		goto fail;
152	}
153#ifdef CY_PCI_FASTINTR
154	irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST,
155	    cyintr, vsc, &irq_cookie);
156#else
157	irq_setup = ENXIO;
158#endif
159	if (irq_setup != 0)
160		irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY,
161		    cyintr, vsc, &irq_cookie);
162	if (irq_setup != 0) {
163		device_printf(dev, "interrupt setup failed\n");
164		goto fail;
165	}
166
167	/*
168	 * Enable the "local" interrupt input to generate a
169	 * PCI interrupt.
170	 */
171	plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f;
172	switch (plx_ver) {
173	case PLX_9050:
174		outw(ioport + CY_PLX_9050_ICS,
175		    CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE |
176		    CY_PLX_9050_ICS_LOCAL_IPOLARITY);
177		break;
178	case PLX_9060:
179	case PLX_9080:
180	default:		/* Old board, use PLX_9060 values. */
181		outw(ioport + CY_PLX_9060_ICS,
182		    inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE |
183		    CY_PLX_9060_ICS_LOCAL_IENABLE);
184		break;
185	}
186
187	return (0);
188
189fail:
190	if (ioport_res != NULL)
191		bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid,
192		    ioport_res);
193	if (irq_res != NULL)
194		bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
195	if (mem_res != NULL)
196		bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
197	return (ENXIO);
198}
199