cy_pci.c revision 1.7 
1/*	$NetBSD: cy_pci.c,v 1.7 1997/06/17 05:44:22 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	pcireg_t expected;
52
53	/* Map I/O (if possible). */
54	ioh_valid = (pci_mapreg_map(pap, 0x14, PCI_MAPREG_TYPE_IO, 0,
55	    iotp, iohp, NULL, iosizep) == 0);
56
57	/* Map mem (if possible).  Expected mem type depends on board ID.  */
58	expected = PCI_MAPREG_TYPE_MEM;
59	if (PCI_PRODUCT(pap->pa_id) == PCI_PRODUCT_CYCLADES_CYCLOMY_1)
60		expected |= PCI_MAPREG_MEM_TYPE_32BIT_1M;
61	else
62		expected |= PCI_MAPREG_MEM_TYPE_32BIT;
63	memh_valid = (pci_mapreg_map(pap, 0x18, expected, 0,
64	    memtp, memhp, NULL, memsizep) == 0);
65
66	if (ioh_valid && memh_valid)
67		return (1);
68
69	if (ioh_valid)
70		bus_space_unmap(*iotp, *iohp, *iosizep);
71	if (memh_valid)
72		bus_space_unmap(*memtp, *memhp, *memsizep);
73	return (0);
74}
75
76static void
77cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize)
78	bus_space_tag_t iot, memt;
79	bus_space_handle_t ioh, memh;
80	bus_size_t iosize, memsize;
81
82{
83	bus_space_unmap(iot, ioh, iosize);
84	bus_space_unmap(memt, memh, memsize);
85}
86
87static int
88cy_match_pci(parent, match, aux)
89	struct device	*parent;
90#ifdef __BROKEN_INDIRECT_CONFIG
91	void		*match;
92#else
93	struct cfdata	*match;
94#endif
95	void		*aux;
96{
97	struct pci_attach_args *pap = aux;
98	bus_space_tag_t iot, memt;
99	bus_space_handle_t ioh, memh;
100	bus_size_t iosize, memsize;
101
102	if (PCI_VENDOR(pap->pa_id) != PCI_VENDOR_CYCLADES)
103		return 0;
104
105	switch (PCI_PRODUCT(pap->pa_id)) {
106	case PCI_PRODUCT_CYCLADES_CYCLOMY_1:
107		break;
108	case PCI_PRODUCT_CYCLADES_CYCLOMY_2:
109		break;
110	default:
111		return 0;
112	}
113
114#ifdef CY_DEBUG
115	printf("cy: Found Cyclades PCI device, id = 0x%x\n", pap->pa_id);
116#endif
117
118	if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh, &memsize) == 0)
119		return (0);
120
121#if 0
122	XXX probably should do something like this, but this code is just
123	XXX too broken.
124
125#ifdef CY_DEBUG
126	printf("%s: pci mapped mem 0x%lx (size %d), io 0x%x (size %d)\n",
127	    sc.sc_dev.dv_xname, memaddr, memsize, iobase, iosize);
128#endif
129
130	if ((rv = cy_find(&sc)) == 0)
131		printf("%s: PCI Cyclom card with no CD1400s!?\n",
132		    sc.sc_dev.dv_xname);
133#endif /* 0 */
134
135	cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize);
136	return (1);
137}
138
139
140static void
141cy_attach_pci(parent, self, aux)
142	struct device  *parent, *self;
143	void *aux;
144{
145	struct cy_softc *sc = (void *) self;
146	struct pci_attach_args *pap = aux;
147	pci_intr_handle_t intrhandle;
148	bus_space_tag_t iot, memt;
149	bus_space_handle_t ioh, memh;
150	bus_size_t iosize, memsize;
151	const char *intrstr;
152
153	sc->sc_bustype = CY_BUSTYPE_PCI;
154
155	if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh,
156	    &memsize) == 0) {
157		printf(": unable to map device registers\n");
158		return;
159	}
160
161	sc->sc_memt = memt;
162	sc->sc_bsh = memh;
163
164	if (cy_find(sc) == 0) {
165		printf(": cannot find CD1400s\n");
166		return;
167	}
168
169	/* Set up interrupt handler. */
170	if (pci_intr_map(pap->pa_pc, pap->pa_intrtag, pap->pa_intrpin,
171	    pap->pa_intrline, &intrhandle) != 0) {
172		printf(": couldn't map PCI interrupt\n");
173		return;
174	}
175	intrstr = pci_intr_string(pap->pa_pc, intrhandle);
176	sc->sc_ih = pci_intr_establish(pap->pa_pc, intrhandle, IPL_TTY,
177	    cy_intr, sc);
178	if (sc->sc_ih == NULL) {
179		printf(": couldn't establish interrupt");
180		if (intrstr != NULL)
181			printf(" at %s", intrstr);
182		printf("\n");
183		return;
184	}
185	if (intrstr != NULL)
186		printf(": interrupting at %s\n%s", intrstr, self->dv_xname);
187
188	/* attach the hardware */
189	cy_attach(parent, self, aux);
190
191	/* Enable PCI card interrupts */
192	bus_space_write_2(iot, ioh, CY_PCI_INTENA,
193	    bus_space_read_2(iot, ioh, CY_PCI_INTENA) | 0x900);
194}
195