1 | /* $NetBSD: cy_pci.c,v 1.25 2016/07/07 06:55:41 msaitoh 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 1.25 2016/07/07 06:55:41 msaitoh Exp $" ); |
14 | |
15 | #include <sys/param.h> |
16 | #include <sys/systm.h> |
17 | #include <sys/device.h> |
18 | |
19 | #include <sys/bus.h> |
20 | #include <sys/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 | |
30 | struct 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 | |
37 | static const struct cy_pci_product { |
38 | pci_product_id_t cp_product; /* product ID */ |
39 | pcireg_t cp_memtype; /* memory type */ |
40 | } cy_pci_products[] = { |
41 | { PCI_PRODUCT_CYCLADES_CYCLOMY_1, |
42 | PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT_1M }, |
43 | { PCI_PRODUCT_CYCLADES_CYCLOM4Y_1, |
44 | PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT_1M }, |
45 | { PCI_PRODUCT_CYCLADES_CYCLOM8Y_1, |
46 | PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT_1M }, |
47 | |
48 | { PCI_PRODUCT_CYCLADES_CYCLOMY_2, |
49 | PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT }, |
50 | { PCI_PRODUCT_CYCLADES_CYCLOM4Y_2, |
51 | PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT }, |
52 | { PCI_PRODUCT_CYCLADES_CYCLOM8Y_2, |
53 | PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT }, |
54 | |
55 | { 0, |
56 | 0 }, |
57 | }; |
58 | static const int cy_pci_nproducts = |
59 | sizeof(cy_pci_products) / sizeof(cy_pci_products[0]); |
60 | |
61 | static const struct cy_pci_product * |
62 | cy_pci_lookup(const struct pci_attach_args *pa) |
63 | { |
64 | const struct cy_pci_product *cp; |
65 | int i; |
66 | |
67 | if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_CYCLADES) |
68 | return (NULL); |
69 | |
70 | for (i = 0; i < cy_pci_nproducts; i++) { |
71 | cp = &cy_pci_products[i]; |
72 | if (PCI_PRODUCT(pa->pa_id) == cp->cp_product) |
73 | return (cp); |
74 | } |
75 | return (NULL); |
76 | } |
77 | |
78 | static int |
79 | cy_pci_match(device_t parent, cfdata_t match, void *aux) |
80 | { |
81 | struct pci_attach_args *pa = aux; |
82 | |
83 | return (cy_pci_lookup(pa) != NULL); |
84 | } |
85 | |
86 | static void |
87 | cy_pci_attach(device_t parent, device_t self, void *aux) |
88 | { |
89 | struct cy_pci_softc *psc = device_private(self); |
90 | struct cy_softc *sc = &psc->sc_cy; |
91 | struct pci_attach_args *pa = aux; |
92 | pci_intr_handle_t ih; |
93 | const struct cy_pci_product *cp; |
94 | const char *intrstr; |
95 | int plx_ver; |
96 | char intrbuf[PCI_INTRSTR_LEN]; |
97 | |
98 | sc->sc_dev = self; |
99 | |
100 | aprint_naive(": Multi-port serial controller\n" ); |
101 | |
102 | sc->sc_bustype = CY_BUSTYPE_PCI; |
103 | |
104 | cp = cy_pci_lookup(pa); |
105 | if (cp == NULL) |
106 | panic("cy_pci_attach: impossible" ); |
107 | |
108 | aprint_normal(": Cyclades-Y multiport serial\n" ); |
109 | |
110 | if (pci_mapreg_map(pa, 0x14, PCI_MAPREG_TYPE_IO, 0, |
111 | &psc->sc_iot, &psc->sc_ioh, NULL, NULL) != 0) { |
112 | aprint_error_dev(sc->sc_dev, "unable to map PLX registers\n" ); |
113 | return; |
114 | } |
115 | |
116 | if (pci_mapreg_map(pa, 0x18, cp->cp_memtype, 0, |
117 | &sc->sc_memt, &sc->sc_bsh, NULL, NULL) != 0) { |
118 | aprint_error_dev(sc->sc_dev, |
119 | "unable to map device registers\n" ); |
120 | return; |
121 | } |
122 | |
123 | if (cy_find(sc) == 0) { |
124 | aprint_error_dev(sc->sc_dev, "unable to find CD1400s\n" ); |
125 | return; |
126 | } |
127 | |
128 | /* |
129 | * XXX Like the Cyclades-Z, we should really check the EEPROM to |
130 | * determine the "poll or interrupt" setting. For now, we always |
131 | * map the interrupt and enable it in the PLX. |
132 | */ |
133 | |
134 | /* Map and establish the interrupt. */ |
135 | if (pci_intr_map(pa, &ih) != 0) { |
136 | aprint_error_dev(sc->sc_dev, "unable to map interrupt\n" ); |
137 | return; |
138 | } |
139 | intrstr = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf)); |
140 | sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_TTY, cy_intr, sc); |
141 | if (sc->sc_ih == NULL) { |
142 | aprint_error_dev(sc->sc_dev, "unable to establish interrupt" ); |
143 | if (intrstr != NULL) |
144 | aprint_error(" at %s" , intrstr); |
145 | aprint_error("\n" ); |
146 | return; |
147 | } |
148 | aprint_normal_dev(sc->sc_dev, "interrupting at %s\n" , intrstr); |
149 | |
150 | cy_attach(sc); |
151 | |
152 | plx_ver = bus_space_read_1(sc->sc_memt, sc->sc_bsh, CY_PLX_VER) & 0x0f; |
153 | |
154 | /* Enable PCI card interrupts */ |
155 | switch (plx_ver) { |
156 | case CY_PLX_9050: |
157 | bus_space_write_2(psc->sc_iot, psc->sc_ioh, CY_PCI_INTENA_9050, |
158 | bus_space_read_2(psc->sc_iot, psc->sc_ioh, |
159 | CY_PCI_INTENA_9050) | 0x40); |
160 | break; |
161 | |
162 | case CY_PLX_9060: |
163 | case CY_PLX_9080: |
164 | default: |
165 | bus_space_write_2(psc->sc_iot, psc->sc_ioh, CY_PCI_INTENA, |
166 | bus_space_read_2(psc->sc_iot, psc->sc_ioh, |
167 | CY_PCI_INTENA) | 0x900); |
168 | } |
169 | } |
170 | |
171 | CFATTACH_DECL_NEW(cy_pci, sizeof(struct cy_pci_softc), |
172 | cy_pci_match, cy_pci_attach, NULL, NULL); |
173 | |