1 /* $NetBSD: cy_pci.c,v 1.8 1998/06/08 06:55:54 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/param.h> 13 #include <sys/systm.h> 14 #include <sys/device.h> 15 16 #include <machine/bus.h> 17 #include <machine/intr.h> 18 19 #include <dev/pci/pcivar.h> 20 #include <dev/pci/pcireg.h> 21 #include <dev/pci/pcidevs.h> 22 23 #include <dev/ic/cd1400reg.h> 24 #include <dev/ic/cyreg.h> 25 #include <dev/ic/cyvar.h> 26 27 static int cy_match_pci __P((struct device *, struct cfdata *, void *)); 28 static void cy_attach_pci __P((struct device *, struct device *, void *)); 29 static int cy_map_pci __P((struct pci_attach_args *, bus_space_tag_t *, 30 bus_space_handle_t *, bus_size_t *, bus_space_tag_t *, 31 bus_space_handle_t *, bus_size_t *)); 32 static void cy_unmap_pci __P((bus_space_tag_t, bus_space_handle_t, 33 bus_size_t, bus_space_tag_t, bus_space_handle_t, bus_size_t)); 34 35 struct cfattach cy_pci_ca = { 36 sizeof(struct cy_softc), cy_match_pci, cy_attach_pci 37 }; 38 39 static int 40 cy_map_pci(pap, iotp, iohp, iosizep, memtp, memhp, memsizep) 41 struct pci_attach_args *pap; 42 bus_space_tag_t *iotp, *memtp; 43 bus_space_handle_t *iohp, *memhp; 44 bus_size_t *iosizep, *memsizep; 45 { 46 int ioh_valid, memh_valid; 47 pcireg_t expected; 48 49 /* Map I/O (if possible). */ 50 ioh_valid = (pci_mapreg_map(pap, 0x14, PCI_MAPREG_TYPE_IO, 0, 51 iotp, iohp, NULL, iosizep) == 0); 52 53 /* Map mem (if possible). Expected mem type depends on board ID. */ 54 expected = PCI_MAPREG_TYPE_MEM; 55 if (PCI_PRODUCT(pap->pa_id) == PCI_PRODUCT_CYCLADES_CYCLOMY_1) 56 expected |= PCI_MAPREG_MEM_TYPE_32BIT_1M; 57 else 58 expected |= PCI_MAPREG_MEM_TYPE_32BIT; 59 memh_valid = (pci_mapreg_map(pap, 0x18, expected, 0, 60 memtp, memhp, NULL, memsizep) == 0); 61 62 if (ioh_valid && memh_valid) 63 return (1); 64 65 if (ioh_valid) 66 bus_space_unmap(*iotp, *iohp, *iosizep); 67 if (memh_valid) 68 bus_space_unmap(*memtp, *memhp, *memsizep); 69 return (0); 70 } 71 72 static void 73 cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize) 74 bus_space_tag_t iot, memt; 75 bus_space_handle_t ioh, memh; 76 bus_size_t iosize, memsize; 77 78 { 79 bus_space_unmap(iot, ioh, iosize); 80 bus_space_unmap(memt, memh, memsize); 81 } 82 83 static int 84 cy_match_pci(parent, match, aux) 85 struct device *parent; 86 struct cfdata *match; 87 void *aux; 88 { 89 struct pci_attach_args *pap = aux; 90 bus_space_tag_t iot, memt; 91 bus_space_handle_t ioh, memh; 92 bus_size_t iosize, memsize; 93 94 if (PCI_VENDOR(pap->pa_id) != PCI_VENDOR_CYCLADES) 95 return 0; 96 97 switch (PCI_PRODUCT(pap->pa_id)) { 98 case PCI_PRODUCT_CYCLADES_CYCLOMY_1: 99 break; 100 case PCI_PRODUCT_CYCLADES_CYCLOMY_2: 101 break; 102 default: 103 return 0; 104 } 105 106 #ifdef CY_DEBUG 107 printf("cy: Found Cyclades PCI device, id = 0x%x\n", pap->pa_id); 108 #endif 109 110 if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh, &memsize) == 0) 111 return (0); 112 113 #if 0 114 XXX probably should do something like this, but this code is just 115 XXX too broken. 116 117 #ifdef CY_DEBUG 118 printf("%s: pci mapped mem 0x%lx (size %d), io 0x%x (size %d)\n", 119 sc.sc_dev.dv_xname, memaddr, memsize, iobase, iosize); 120 #endif 121 122 if ((rv = cy_find(&sc)) == 0) 123 printf("%s: PCI Cyclom card with no CD1400s!?\n", 124 sc.sc_dev.dv_xname); 125 #endif /* 0 */ 126 127 cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize); 128 return (1); 129 } 130 131 132 static void 133 cy_attach_pci(parent, self, aux) 134 struct device *parent, *self; 135 void *aux; 136 { 137 struct cy_softc *sc = (void *) self; 138 struct pci_attach_args *pap = aux; 139 pci_intr_handle_t intrhandle; 140 bus_space_tag_t iot, memt; 141 bus_space_handle_t ioh, memh; 142 bus_size_t iosize, memsize; 143 const char *intrstr; 144 145 sc->sc_bustype = CY_BUSTYPE_PCI; 146 147 if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh, 148 &memsize) == 0) { 149 printf(": unable to map device registers\n"); 150 return; 151 } 152 153 sc->sc_memt = memt; 154 sc->sc_bsh = memh; 155 156 if (cy_find(sc) == 0) { 157 printf(": cannot find CD1400s\n"); 158 return; 159 } 160 161 /* Set up interrupt handler. */ 162 if (pci_intr_map(pap->pa_pc, pap->pa_intrtag, pap->pa_intrpin, 163 pap->pa_intrline, &intrhandle) != 0) { 164 printf(": couldn't map PCI interrupt\n"); 165 return; 166 } 167 intrstr = pci_intr_string(pap->pa_pc, intrhandle); 168 sc->sc_ih = pci_intr_establish(pap->pa_pc, intrhandle, IPL_TTY, 169 cy_intr, sc); 170 if (sc->sc_ih == NULL) { 171 printf(": couldn't establish interrupt"); 172 if (intrstr != NULL) 173 printf(" at %s", intrstr); 174 printf("\n"); 175 return; 176 } 177 if (intrstr != NULL) 178 printf(": interrupting at %s\n%s", intrstr, self->dv_xname); 179 180 /* attach the hardware */ 181 cy_attach(parent, self, aux); 182 183 /* Enable PCI card interrupts */ 184 bus_space_write_2(iot, ioh, CY_PCI_INTENA, 185 bus_space_read_2(iot, ioh, CY_PCI_INTENA) | 0x900); 186 } 187