cy_pci.c revision 1.14 
1/*	$NetBSD: cy_pci.c,v 1.14 2002/09/27 20:39:52 thorpej 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/cdefs.h>
13__KERNEL_RCSID(0, "$NetBSD: cy_pci.c,v 1.14 2002/09/27 20:39:52 thorpej Exp $");
14
15#include <sys/param.h>
16#include <sys/systm.h>
17#include <sys/device.h>
18
19#include <machine/bus.h>
20#include <machine/intr.h>
21
22#include <dev/pci/pcivar.h>
23#include <dev/pci/pcireg.h>
24#include <dev/pci/pcidevs.h>
25
26#include <dev/ic/cd1400reg.h>
27#include <dev/ic/cyreg.h>
28#include <dev/ic/cyvar.h>
29
30struct cy_pci_softc {
31	struct cy_softc sc_cy;		/* real cy softc */
32
33	bus_space_tag_t sc_iot;		/* PLX runtime i/o tag */
34	bus_space_handle_t sc_ioh;	/* PLX runtime i/o handle */
35};
36
37int	cy_pci_match(struct device *, struct cfdata *, void *);
38void	cy_pci_attach(struct device *, struct device *, void *);
39
40const struct cfattach cy_pci_ca = {
41	sizeof(struct cy_pci_softc), cy_pci_match, cy_pci_attach
42};
43
44static const struct cy_pci_product {
45	pci_product_id_t cp_product;	/* product ID */
46	pcireg_t cp_memtype;		/* memory type */
47} cy_pci_products[] = {
48	{ PCI_PRODUCT_CYCLADES_CYCLOMY_1,
49	  PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT_1M },
50	{ PCI_PRODUCT_CYCLADES_CYCLOM4Y_1,
51	  PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT_1M },
52	{ PCI_PRODUCT_CYCLADES_CYCLOM8Y_1,
53	  PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT_1M },
54
55	{ PCI_PRODUCT_CYCLADES_CYCLOMY_2,
56	  PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT },
57	{ PCI_PRODUCT_CYCLADES_CYCLOM4Y_2,
58	  PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT },
59	{ PCI_PRODUCT_CYCLADES_CYCLOM8Y_2,
60	  PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT },
61
62	{ 0,
63	  0 },
64};
65static const int cy_pci_nproducts =
66    sizeof(cy_pci_products) / sizeof(cy_pci_products[0]);
67
68static const struct cy_pci_product *
69cy_pci_lookup(const struct pci_attach_args *pa)
70{
71	const struct cy_pci_product *cp;
72	int i;
73
74	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_CYCLADES)
75		return (NULL);
76
77	for (i = 0; i < cy_pci_nproducts; i++) {
78		cp = &cy_pci_products[i];
79		if (PCI_PRODUCT(pa->pa_id) == cp->cp_product)
80			return (cp);
81	}
82	return (NULL);
83}
84
85int
86cy_pci_match(struct device *parent, struct cfdata *match, void *aux)
87{
88	struct pci_attach_args *pa = aux;
89
90	return (cy_pci_lookup(pa) != NULL);
91}
92
93void
94cy_pci_attach(struct device *parent, struct device *self, void *aux)
95{
96	struct cy_pci_softc *psc = (void *) self;
97	struct cy_softc *sc = (void *) &psc->sc_cy;
98	struct pci_attach_args *pa = aux;
99	pci_intr_handle_t ih;
100	const struct cy_pci_product *cp;
101	const char *intrstr;
102	int plx_ver;
103
104	sc->sc_bustype = CY_BUSTYPE_PCI;
105
106	cp = cy_pci_lookup(pa);
107	if (cp == NULL)
108		panic("cy_pci_attach: impossible");
109
110	printf(": Cyclades-Y multiport serial\n");
111
112	if (pci_mapreg_map(pa, 0x14, PCI_MAPREG_TYPE_IO, 0,
113	    &psc->sc_iot, &psc->sc_ioh, NULL, NULL) != 0) {
114		printf("%s: unable to map PLX registers\n",
115		    sc->sc_dev.dv_xname);
116		return;
117	}
118
119	if (pci_mapreg_map(pa, 0x18, cp->cp_memtype, 0,
120	    &sc->sc_memt, &sc->sc_bsh, NULL, NULL) != 0) {
121		printf("%s: unable to map device registers\n",
122		    sc->sc_dev.dv_xname);
123		return;
124	}
125
126	if (cy_find(sc) == 0) {
127		printf("%s: unable to find CD1400s\n", sc->sc_dev.dv_xname);
128		return;
129	}
130
131	/*
132	 * XXX Like the Cyclades-Z, we should really check the EEPROM to
133	 * determine the "poll or interrupt" setting.  For now, we always
134	 * map the interrupt and enable it in the PLX.
135	 */
136
137	/* Map and establish the interrupt. */
138	if (pci_intr_map(pa, &ih) != 0) {
139		printf(": unable to map interrupt\n");
140		return;
141	}
142	intrstr = pci_intr_string(pa->pa_pc, ih);
143	sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_TTY, cy_intr, sc);
144	if (sc->sc_ih == NULL) {
145		printf(": unable to establish interrupt");
146		if (intrstr != NULL)
147			printf(" at %s", intrstr);
148		printf("\n");
149		return;
150	}
151	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
152
153	cy_attach(sc);
154
155	plx_ver = bus_space_read_1(sc->sc_memt, sc->sc_bsh, CY_PLX_VER) & 0x0f;
156
157	/* Enable PCI card interrupts */
158	switch (plx_ver) {
159	case CY_PLX_9050:
160		bus_space_write_2(psc->sc_iot, psc->sc_ioh, CY_PCI_INTENA_9050,
161		    bus_space_read_2(psc->sc_iot, psc->sc_ioh,
162		    CY_PCI_INTENA_9050) | 0x40);
163		break;
164
165	case CY_PLX_9060:
166	case CY_PLX_9080:
167	default:
168		bus_space_write_2(psc->sc_iot, psc->sc_ioh, CY_PCI_INTENA,
169		    bus_space_read_2(psc->sc_iot, psc->sc_ioh,
170		    CY_PCI_INTENA) | 0x900);
171	}
172}
173