1 /* $NetBSD: cy_isa.c,v 1.24 2023/11/20 04:26:34 thorpej Exp $ */
2
3 /*
4 * cy.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_isa.c,v 1.24 2023/11/20 04:26:34 thorpej Exp $");
14
15 #include <sys/param.h>
16 #include <sys/systm.h>
17 #include <sys/device.h>
18 #include <sys/kmem.h>
19
20 #include <sys/bus.h>
21 #include <sys/intr.h>
22
23 #include <dev/isa/isavar.h>
24 #include <dev/isa/isareg.h>
25
26 #include <dev/ic/cd1400reg.h>
27 #include <dev/ic/cyreg.h>
28 #include <dev/ic/cyvar.h>
29
30 int cy_isa_probe(device_t, cfdata_t, void *);
31 void cy_isa_attach(device_t, device_t, void *);
32
33 CFATTACH_DECL_NEW(cy_isa, sizeof(struct cy_softc),
34 cy_isa_probe, cy_isa_attach, NULL, NULL);
35
36 int
cy_isa_probe(device_t parent,cfdata_t match,void * aux)37 cy_isa_probe(device_t parent, cfdata_t match, void *aux)
38 {
39 struct isa_attach_args *ia = aux;
40 struct cy_softc *sc;
41 int found = 0;
42
43 if (ia->ia_niomem < 1)
44 return (0);
45 if (ia->ia_nirq < 1)
46 return (0);
47
48 /* Disallow wildcarded memory address. */
49 if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM)
50 return 0;
51 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
52 return 0;
53
54 sc = kmem_zalloc(sizeof(*sc), KM_SLEEP);
55
56 sc->sc_memt = ia->ia_memt;
57 sc->sc_bustype = CY_BUSTYPE_ISA;
58
59 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, CY_MEMSIZE, 0,
60 &sc->sc_bsh) != 0)
61 goto out;
62
63 found = cy_find(sc);
64
65 bus_space_unmap(ia->ia_memt, sc->sc_bsh, CY_MEMSIZE);
66
67 if (found) {
68 ia->ia_niomem = 1;
69 ia->ia_iomem[0].ir_size = CY_MEMSIZE;
70
71 ia->ia_nirq = 1;
72
73 ia->ia_nio = 0;
74 ia->ia_ndrq = 0;
75 }
76 out:
77 kmem_free(sc, sizeof(*sc));
78 return (found);
79 }
80
81 void
cy_isa_attach(device_t parent,device_t self,void * aux)82 cy_isa_attach(device_t parent, device_t self, void *aux)
83 {
84 struct cy_softc *sc = device_private(self);
85 struct isa_attach_args *ia = aux;
86
87 sc->sc_dev = self;
88 sc->sc_memt = ia->ia_memt;
89 sc->sc_bustype = CY_BUSTYPE_ISA;
90
91 printf(": Cyclades-Y multiport serial\n");
92
93 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, CY_MEMSIZE, 0,
94 &sc->sc_bsh) != 0) {
95 aprint_error_dev(sc->sc_dev,
96 "unable to map device registers\n");
97 return;
98 }
99
100 if (cy_find(sc) == 0) {
101 aprint_error_dev(sc->sc_dev, "unable to find CD1400s\n");
102 return;
103 }
104
105 cy_attach(sc);
106
107 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
108 IST_EDGE, IPL_TTY, cy_intr, sc);
109 if (sc->sc_ih == NULL)
110 aprint_error_dev(sc->sc_dev, "unable to establish interrupt\n");
111 }
112