| 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 | |