cy_pci.c revision 1.6 
1/*	$NetBSD: cy_pci.c,v 1.6 1997/04/13 20:14:23 cgd Exp $	*/
2
3/*
4 * cy_pci.c
5 *
6 * Driver for Cyclades Cyclom-8/16/32 multiport serial cards
7 * (currently not tested with Cyclom-32 cards)
8 *
9 * Timo Rossi, 1996
10 *
11 */
12#include <sys/param.h>
13#include <sys/systm.h>
14#include <sys/device.h>
15
16#include <machine/bus.h>
17#include <machine/intr.h>
18
19#include <dev/pci/pcivar.h>
20#include <dev/pci/pcireg.h>
21#include <dev/pci/pcidevs.h>
22
23#include <dev/ic/cd1400reg.h>
24#include <dev/ic/cyreg.h>
25#include <dev/ic/cyvar.h>
26
27#ifdef __BROKEN_INDIRECT_CONFIG
28static int cy_match_pci __P((struct device *, void *, void *));
29#else
30static int cy_match_pci __P((struct device *, struct cfdata *, void *));
31#endif
32static void cy_attach_pci  __P((struct device *, struct device *, void *));
33static int cy_map_pci __P((struct pci_attach_args *, bus_space_tag_t *,
34    bus_space_handle_t *, bus_size_t  *, bus_space_tag_t *,
35    bus_space_handle_t *, bus_size_t *));
36static void cy_unmap_pci __P((bus_space_tag_t, bus_space_handle_t,
37    bus_size_t, bus_space_tag_t, bus_space_handle_t, bus_size_t));
38
39struct cfattach cy_pci_ca = {
40	sizeof(struct cy_softc), cy_match_pci, cy_attach_pci
41};
42
43static int
44cy_map_pci(pap, iotp, iohp, iosizep, memtp, memhp, memsizep)
45	struct pci_attach_args	*pap;
46	bus_space_tag_t		*iotp, *memtp;
47	bus_space_handle_t	*iohp, *memhp;
48	bus_size_t		*iosizep, *memsizep;
49{
50	int ioh_valid, memh_valid;
51
52	ioh_valid = (pci_mapreg_map(pap, 0x14,
53	    PCI_MAPREG_TYPE_IO, 0,
54	    iotp, iohp, NULL, iosizep) == 0);
55	memh_valid = (pci_mapreg_map(pap, 0x18,
56	    PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
57	    memtp, memhp, NULL, memsizep) == 0);
58
59	if (ioh_valid && memh_valid)
60		return (1);
61
62	if (ioh_valid)
63		bus_space_unmap(*iotp, *iohp, *iosizep);
64	if (memh_valid)
65		bus_space_unmap(*memtp, *memhp, *memsizep);
66	return (0);
67}
68
69static void
70cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize)
71	bus_space_tag_t iot, memt;
72	bus_space_handle_t ioh, memh;
73	bus_size_t iosize, memsize;
74
75{
76	bus_space_unmap(iot, ioh, iosize);
77	bus_space_unmap(memt, memh, memsize);
78}
79
80static int
81cy_match_pci(parent, match, aux)
82	struct device	*parent;
83#ifdef __BROKEN_INDIRECT_CONFIG
84	void		*match;
85#else
86	struct cfdata	*match;
87#endif
88	void		*aux;
89{
90	struct pci_attach_args *pap = aux;
91	bus_space_tag_t iot, memt;
92	bus_space_handle_t ioh, memh;
93	bus_size_t iosize, memsize;
94
95	if (PCI_VENDOR(pap->pa_id) != PCI_VENDOR_CYCLADES)
96		return 0;
97
98	switch (PCI_PRODUCT(pap->pa_id)) {
99	case PCI_PRODUCT_CYCLADES_CYCLOMY_1:
100		break;
101	case PCI_PRODUCT_CYCLADES_CYCLOMY_2:
102		break;
103	default:
104		return 0;
105	}
106
107#ifdef CY_DEBUG
108	printf("cy: Found Cyclades PCI device, id = 0x%x\n", pap->pa_id);
109#endif
110
111	if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh, &memsize) == 0)
112		return (0);
113
114#if 0
115	XXX probably should do something like this, but this code is just
116	XXX too broken.
117
118#ifdef CY_DEBUG
119	printf("%s: pci mapped mem 0x%lx (size %d), io 0x%x (size %d)\n",
120	    sc.sc_dev.dv_xname, memaddr, memsize, iobase, iosize);
121#endif
122
123	if ((rv = cy_find(&sc)) == 0)
124		printf("%s: PCI Cyclom card with no CD1400s!?\n",
125		    sc.sc_dev.dv_xname);
126#endif /* 0 */
127
128	cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize);
129	return (1);
130}
131
132
133static void
134cy_attach_pci(parent, self, aux)
135	struct device  *parent, *self;
136	void *aux;
137{
138	struct cy_softc *sc = (void *) self;
139	struct pci_attach_args *pap = aux;
140	pci_intr_handle_t intrhandle;
141	bus_space_tag_t iot, memt;
142	bus_space_handle_t ioh, memh;
143	bus_size_t iosize, memsize;
144	const char *intrstr;
145
146	sc->sc_bustype = CY_BUSTYPE_PCI;
147
148	if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh,
149	    &memsize) == 0) {
150		printf(": unable to map device registers\n");
151		return;
152	}
153
154	sc->sc_memt = memt;
155	sc->sc_bsh = memh;
156
157	if (cy_find(sc) == 0) {
158		printf(": cannot find CD1400s\n");
159		return;
160	}
161
162	/* Set up interrupt handler. */
163	if (pci_intr_map(pap->pa_pc, pap->pa_intrtag, pap->pa_intrpin,
164	    pap->pa_intrline, &intrhandle) != 0) {
165		printf(": couldn't map PCI interrupt\n");
166		return;
167	}
168	intrstr = pci_intr_string(pap->pa_pc, intrhandle);
169	sc->sc_ih = pci_intr_establish(pap->pa_pc, intrhandle, IPL_TTY,
170	    cy_intr, sc);
171	if (sc->sc_ih == NULL) {
172		printf(": couldn't establish interrupt", sc->sc_dev.dv_xname);
173		if (intrstr != NULL)
174			printf(" at %s", intrstr);
175		printf("\n");
176		return;
177	}
178	if (intrstr != NULL)
179		printf(": interrupting at %s\n%s", intrstr, self->dv_xname);
180
181	/* attach the hardware */
182	cy_attach(parent, self, aux);
183
184	/* Enable PCI card interrupts */
185	bus_space_write_2(iot, ioh, CY_PCI_INTENA,
186	    bus_space_read_2(iot, ioh, CY_PCI_INTENA) | 0x900);
187}
188