1 /* $NetBSD: cy_pci.c,v 1.7 1997/06/17 05:44:22 cgd 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 #ifdef __BROKEN_INDIRECT_CONFIG 28 static int cy_match_pci __P((struct device *, void *, void *)); 29 #else 30 static int cy_match_pci __P((struct device *, struct cfdata *, void *)); 31 #endif 32 static void cy_attach_pci __P((struct device *, struct device *, void *)); 33 static int cy_map_pci __P((struct pci_attach_args *, bus_space_tag_t *, 34 bus_space_handle_t *, bus_size_t *, bus_space_tag_t *, 35 bus_space_handle_t *, bus_size_t *)); 36 static void cy_unmap_pci __P((bus_space_tag_t, bus_space_handle_t, 37 bus_size_t, bus_space_tag_t, bus_space_handle_t, bus_size_t)); 38 39 struct cfattach cy_pci_ca = { 40 sizeof(struct cy_softc), cy_match_pci, cy_attach_pci 41 }; 42 43 static int 44 cy_map_pci(pap, iotp, iohp, iosizep, memtp, memhp, memsizep) 45 struct pci_attach_args *pap; 46 bus_space_tag_t *iotp, *memtp; 47 bus_space_handle_t *iohp, *memhp; 48 bus_size_t *iosizep, *memsizep; 49 { 50 int ioh_valid, memh_valid; 51 pcireg_t expected; 52 53 /* Map I/O (if possible). */ 54 ioh_valid = (pci_mapreg_map(pap, 0x14, PCI_MAPREG_TYPE_IO, 0, 55 iotp, iohp, NULL, iosizep) == 0); 56 57 /* Map mem (if possible). Expected mem type depends on board ID. */ 58 expected = PCI_MAPREG_TYPE_MEM; 59 if (PCI_PRODUCT(pap->pa_id) == PCI_PRODUCT_CYCLADES_CYCLOMY_1) 60 expected |= PCI_MAPREG_MEM_TYPE_32BIT_1M; 61 else 62 expected |= PCI_MAPREG_MEM_TYPE_32BIT; 63 memh_valid = (pci_mapreg_map(pap, 0x18, expected, 0, 64 memtp, memhp, NULL, memsizep) == 0); 65 66 if (ioh_valid && memh_valid) 67 return (1); 68 69 if (ioh_valid) 70 bus_space_unmap(*iotp, *iohp, *iosizep); 71 if (memh_valid) 72 bus_space_unmap(*memtp, *memhp, *memsizep); 73 return (0); 74 } 75 76 static void 77 cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize) 78 bus_space_tag_t iot, memt; 79 bus_space_handle_t ioh, memh; 80 bus_size_t iosize, memsize; 81 82 { 83 bus_space_unmap(iot, ioh, iosize); 84 bus_space_unmap(memt, memh, memsize); 85 } 86 87 static int 88 cy_match_pci(parent, match, aux) 89 struct device *parent; 90 #ifdef __BROKEN_INDIRECT_CONFIG 91 void *match; 92 #else 93 struct cfdata *match; 94 #endif 95 void *aux; 96 { 97 struct pci_attach_args *pap = aux; 98 bus_space_tag_t iot, memt; 99 bus_space_handle_t ioh, memh; 100 bus_size_t iosize, memsize; 101 102 if (PCI_VENDOR(pap->pa_id) != PCI_VENDOR_CYCLADES) 103 return 0; 104 105 switch (PCI_PRODUCT(pap->pa_id)) { 106 case PCI_PRODUCT_CYCLADES_CYCLOMY_1: 107 break; 108 case PCI_PRODUCT_CYCLADES_CYCLOMY_2: 109 break; 110 default: 111 return 0; 112 } 113 114 #ifdef CY_DEBUG 115 printf("cy: Found Cyclades PCI device, id = 0x%x\n", pap->pa_id); 116 #endif 117 118 if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh, &memsize) == 0) 119 return (0); 120 121 #if 0 122 XXX probably should do something like this, but this code is just 123 XXX too broken. 124 125 #ifdef CY_DEBUG 126 printf("%s: pci mapped mem 0x%lx (size %d), io 0x%x (size %d)\n", 127 sc.sc_dev.dv_xname, memaddr, memsize, iobase, iosize); 128 #endif 129 130 if ((rv = cy_find(&sc)) == 0) 131 printf("%s: PCI Cyclom card with no CD1400s!?\n", 132 sc.sc_dev.dv_xname); 133 #endif /* 0 */ 134 135 cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize); 136 return (1); 137 } 138 139 140 static void 141 cy_attach_pci(parent, self, aux) 142 struct device *parent, *self; 143 void *aux; 144 { 145 struct cy_softc *sc = (void *) self; 146 struct pci_attach_args *pap = aux; 147 pci_intr_handle_t intrhandle; 148 bus_space_tag_t iot, memt; 149 bus_space_handle_t ioh, memh; 150 bus_size_t iosize, memsize; 151 const char *intrstr; 152 153 sc->sc_bustype = CY_BUSTYPE_PCI; 154 155 if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh, 156 &memsize) == 0) { 157 printf(": unable to map device registers\n"); 158 return; 159 } 160 161 sc->sc_memt = memt; 162 sc->sc_bsh = memh; 163 164 if (cy_find(sc) == 0) { 165 printf(": cannot find CD1400s\n"); 166 return; 167 } 168 169 /* Set up interrupt handler. */ 170 if (pci_intr_map(pap->pa_pc, pap->pa_intrtag, pap->pa_intrpin, 171 pap->pa_intrline, &intrhandle) != 0) { 172 printf(": couldn't map PCI interrupt\n"); 173 return; 174 } 175 intrstr = pci_intr_string(pap->pa_pc, intrhandle); 176 sc->sc_ih = pci_intr_establish(pap->pa_pc, intrhandle, IPL_TTY, 177 cy_intr, sc); 178 if (sc->sc_ih == NULL) { 179 printf(": couldn't establish interrupt"); 180 if (intrstr != NULL) 181 printf(" at %s", intrstr); 182 printf("\n"); 183 return; 184 } 185 if (intrstr != NULL) 186 printf(": interrupting at %s\n%s", intrstr, self->dv_xname); 187 188 /* attach the hardware */ 189 cy_attach(parent, self, aux); 190 191 /* Enable PCI card interrupts */ 192 bus_space_write_2(iot, ioh, CY_PCI_INTENA, 193 bus_space_read_2(iot, ioh, CY_PCI_INTENA) | 0x900); 194 } 195