1 /* $NetBSD: cy_pci.c,v 1.23 2008/03/26 17:50:32 matt 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 1.23 2008/03/26 17:50:32 matt 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 97 sc->sc_dev = self; 98 99 aprint_naive(": Multi-port serial controller\n"); 100 101 sc->sc_bustype = CY_BUSTYPE_PCI; 102 103 cp = cy_pci_lookup(pa); 104 if (cp == NULL) 105 panic("cy_pci_attach: impossible"); 106 107 aprint_normal(": Cyclades-Y multiport serial\n"); 108 109 if (pci_mapreg_map(pa, 0x14, PCI_MAPREG_TYPE_IO, 0, 110 &psc->sc_iot, &psc->sc_ioh, NULL, NULL) != 0) { 111 aprint_error_dev(sc->sc_dev, "unable to map PLX registers\n"); 112 return; 113 } 114 115 if (pci_mapreg_map(pa, 0x18, cp->cp_memtype, 0, 116 &sc->sc_memt, &sc->sc_bsh, NULL, NULL) != 0) { 117 aprint_error_dev(sc->sc_dev,"unable to map device registers\n"); 118 return; 119 } 120 121 if (cy_find(sc) == 0) { 122 aprint_error_dev(sc->sc_dev, "unable to find CD1400s\n"); 123 return; 124 } 125 126 /* 127 * XXX Like the Cyclades-Z, we should really check the EEPROM to 128 * determine the "poll or interrupt" setting. For now, we always 129 * map the interrupt and enable it in the PLX. 130 */ 131 132 /* Map and establish the interrupt. */ 133 if (pci_intr_map(pa, &ih) != 0) { 134 aprint_error_dev(sc->sc_dev, "unable to map interrupt\n"); 135 return; 136 } 137 intrstr = pci_intr_string(pa->pa_pc, ih); 138 sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_TTY, cy_intr, sc); 139 if (sc->sc_ih == NULL) { 140 aprint_error_dev(sc->sc_dev, "unable to establish interrupt"); 141 if (intrstr != NULL) 142 aprint_error(" at %s", intrstr); 143 aprint_error("\n"); 144 return; 145 } 146 aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr); 147 148 cy_attach(sc); 149 150 plx_ver = bus_space_read_1(sc->sc_memt, sc->sc_bsh, CY_PLX_VER) & 0x0f; 151 152 /* Enable PCI card interrupts */ 153 switch (plx_ver) { 154 case CY_PLX_9050: 155 bus_space_write_2(psc->sc_iot, psc->sc_ioh, CY_PCI_INTENA_9050, 156 bus_space_read_2(psc->sc_iot, psc->sc_ioh, 157 CY_PCI_INTENA_9050) | 0x40); 158 break; 159 160 case CY_PLX_9060: 161 case CY_PLX_9080: 162 default: 163 bus_space_write_2(psc->sc_iot, psc->sc_ioh, CY_PCI_INTENA, 164 bus_space_read_2(psc->sc_iot, psc->sc_ioh, 165 CY_PCI_INTENA) | 0x900); 166 } 167 } 168 169 CFATTACH_DECL_NEW(cy_pci, sizeof(struct cy_pci_softc), 170 cy_pci_match, cy_pci_attach, NULL, NULL); 171