cy_pci.c revision 1.4
1/* $NetBSD: cy_pci.c,v 1.4 1996/10/21 22:56:29 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 27static int cy_probe_pci __P((struct device *, void *, void *)); 28static void cy_attach_pci __P((struct device *, struct device *, void *)); 29static int cy_map_pci __P((struct pci_attach_args *, struct cy_softc *, 30 bus_space_handle_t *, bus_size_t *, bus_size_t *)); 31static void cy_unmap_pci __P((struct cy_softc *, bus_space_handle_t, 32 bus_size_t, bus_size_t)); 33 34struct cfattach cy_pci_ca = { 35 sizeof(struct cy_softc), cy_probe_pci, cy_attach_pci 36}; 37 38static int 39cy_map_pci(pa, sc, ioh, iosize, memsize) 40 struct pci_attach_args *pa; 41 struct cy_softc *sc; 42 bus_space_handle_t *ioh; 43 bus_size_t *memsize; 44 bus_size_t *iosize; 45{ 46 bus_addr_t iobase; 47 bus_addr_t memaddr; 48 int cacheable; 49 50 if (pci_mem_find(pa->pa_pc, pa->pa_tag, 0x18, &memaddr, memsize, 51 &cacheable) != 0) { 52 printf("%s: can't find PCI card memory", sc->sc_dev.dv_xname); 53 return 0; 54 } 55 /* map the memory (non-cacheable) */ 56 if (bus_space_map(sc->sc_memt, memaddr, *memsize, 0, 57 &sc->sc_bsh) != 0) { 58 printf("%s: couldn't map PCI memory region\n", 59 sc->sc_dev.dv_xname); 60 return 0; 61 } 62 /* the PCI Cyclom IO space is only used for enabling interrupts */ 63 if (pci_io_find(pa->pa_pc, pa->pa_tag, 0x14, &iobase, iosize) != 0) { 64 printf("%s: couldn't find PCI io region\n", 65 sc->sc_dev.dv_xname); 66 goto unmapmem; 67 } 68 if (bus_space_map(sc->sc_iot, iobase, *iosize, 0, ioh) != 0) { 69 printf("%s: couldn't map PCI io region\n", sc->sc_dev.dv_xname); 70 goto unmapio; 71 } 72 return 1; 73 74unmapio: 75 bus_space_unmap(sc->sc_iot, *ioh, *iosize); 76unmapmem: 77 bus_space_unmap(sc->sc_memt, sc->sc_bsh, *memsize); 78 return 0; 79} 80 81static void 82cy_unmap_pci(sc, ioh, iosize, memsize) 83 struct cy_softc *sc; 84 bus_space_handle_t ioh; 85 bus_size_t iosize; 86 bus_size_t memsize; 87 88{ 89 bus_space_unmap(sc->sc_iot, ioh, iosize); 90 bus_space_unmap(sc->sc_memt, sc->sc_bsh, memsize); 91} 92 93static int 94cy_probe_pci(parent, match, aux) 95 struct device *parent; 96 void *match, *aux; 97{ 98 struct pci_attach_args *pa = aux; 99 bus_space_handle_t ioh; 100 bus_size_t memsize; 101 bus_size_t iosize; 102 int rv = 0; 103 struct cy_softc sc; 104 105 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_CYCLADES) 106 return 0; 107 108 switch (PCI_PRODUCT(pa->pa_id)) { 109 case PCI_PRODUCT_CYCLADES_CYCLOMY_1: 110 break; 111 case PCI_PRODUCT_CYCLADES_CYCLOMY_2: 112 break; 113 default: 114 return 0; 115 } 116 117#ifdef CY_DEBUG 118 printf("cy: Found Cyclades PCI device, id = 0x%x\n", pa->pa_id); 119#endif 120 /* XXX THIS IS TOTALLY WRONG! XXX */ 121 memcpy(&sc.sc_dev, match, sizeof(struct device)); 122 123 sc.sc_iot = pa->pa_iot; 124 sc.sc_memt = pa->pa_memt; 125 sc.sc_bustype = CY_BUSTYPE_PCI; 126 127 if (cy_map_pci(pa, &sc, &ioh, &iosize, &memsize) == 0) 128 return 0; 129 130#ifdef CY_DEBUG 131 printf("%s: pci mapped mem 0x%lx (size %d), io 0x%x (size %d)\n", 132 sc.sc_dev.dv_xname, memaddr, memsize, iobase, iosize); 133#endif 134 135 if ((rv = cy_find(&sc)) == 0) 136 printf("%s: PCI Cyclom card with no CD1400s!?\n", 137 sc.sc_dev.dv_xname); 138 139 cy_unmap_pci(&sc, ioh, iosize, memsize); 140 return rv; 141} 142 143 144static void 145cy_attach_pci(parent, self, aux) 146 struct device *parent, *self; 147 void *aux; 148{ 149 struct cy_softc *sc = (void *) self; 150 pci_intr_handle_t intrhandle; 151 bus_space_handle_t ioh; 152 bus_size_t memsize; 153 bus_size_t iosize; 154 struct pci_attach_args *pa = aux; 155 156 sc->sc_iot = pa->pa_iot; 157 sc->sc_memt = pa->pa_memt; 158 sc->sc_bustype = CY_BUSTYPE_PCI; 159 160 if (cy_map_pci(pa, sc, &ioh, &iosize, &memsize) == 0) 161 panic("%s: mapping failed", sc->sc_dev.dv_xname); 162 163 if (cy_find(sc) == 0) 164 panic("%s: Cannot find card", sc->sc_dev.dv_xname); 165 166 cy_attach(parent, self, aux); 167 168 /* Enable PCI card interrupts */ 169 bus_space_write_2(sc->sc_iot, ioh, CY_PCI_INTENA, 170 bus_space_read_2(sc->sc_iot, ioh, CY_PCI_INTENA) | 0x900); 171 172 if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin, 173 pa->pa_intrline, &intrhandle) != 0) 174 panic("%s: couldn't map PCI interrupt", sc->sc_dev.dv_xname); 175 176 177 sc->sc_ih = pci_intr_establish(pa->pa_pc, intrhandle, 178 IPL_TTY, cy_intr, sc); 179 180 if (sc->sc_ih == NULL) 181 panic("%s: couldn't establish interrupt", sc->sc_dev.dv_xname); 182} 183