/* $OpenBSD: schizo.c,v 1.41 2007/01/14 16:21:22 kettenis Exp $ */ /* * Copyright (c) 2002 Jason L. Wright (jason@thought.net) * Copyright (c) 2003 Henric Jungheim * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #define _SPARC_BUS_DMA_PRIVATE #include #include #include #include #include #include #include #include #include #include #ifdef DEBUG #define SDB_PROM 0x01 #define SDB_BUSMAP 0x02 #define SDB_INTR 0x04 #define SDB_CONF 0x08 int schizo_debug = ~0; #define DPRINTF(l, s) do { if (schizo_debug & l) printf s; } while (0) #else #define DPRINTF(l, s) #endif extern struct sparc_pci_chipset _sparc_pci_chipset; int schizo_match(struct device *, void *, void *); void schizo_attach(struct device *, struct device *, void *); void schizo_init(struct schizo_softc *, int); void schizo_init_iommu(struct schizo_softc *, struct schizo_pbm *); int schizo_print(void *, const char *); void schizo_set_intr(struct schizo_softc *, struct schizo_pbm *, int, int (*handler)(void *), void *, int, char *); int schizo_ue(void *); int schizo_ce(void *); int schizo_safari_error(void *); int schizo_pci_error(void *); pci_chipset_tag_t schizo_alloc_chipset(struct schizo_pbm *, int, pci_chipset_tag_t); bus_space_tag_t schizo_alloc_mem_tag(struct schizo_pbm *); bus_space_tag_t schizo_alloc_io_tag(struct schizo_pbm *); bus_space_tag_t schizo_alloc_config_tag(struct schizo_pbm *); bus_space_tag_t _schizo_alloc_bus_tag(struct schizo_pbm *, const char *, int, int, int); bus_dma_tag_t schizo_alloc_dma_tag(struct schizo_pbm *); paddr_t schizo_bus_mmap(bus_space_tag_t, bus_addr_t, off_t, int, int); int schizo_intr_map(struct pci_attach_args *, pci_intr_handle_t *); int _schizo_bus_map(bus_space_tag_t, bus_space_tag_t, bus_addr_t, bus_size_t, int, bus_space_handle_t *); void *_schizo_intr_establish(bus_space_tag_t, bus_space_tag_t, int, int, int, int (*)(void *), void *, const char *); paddr_t _schizo_bus_mmap(bus_space_tag_t, bus_space_tag_t, bus_addr_t, off_t, int, int); int schizo_dmamap_create(bus_dma_tag_t, bus_dma_tag_t, bus_size_t, int, bus_size_t, bus_size_t, int, bus_dmamap_t *); int schizo_match(struct device *parent, void *match, void *aux) { struct mainbus_attach_args *ma = aux; char *str; if (strcmp(ma->ma_name, "pci") != 0) return (0); str = getpropstring(ma->ma_node, "model"); if (strcmp(str, "schizo") == 0) return (1); str = getpropstring(ma->ma_node, "compatible"); if (strcmp(str, "pci108e,8001") == 0) return (1); if (strcmp(str, "pci108e,a801") == 0) /* Tomatillo */ return (1); return (0); } void schizo_attach(struct device *parent, struct device *self, void *aux) { struct schizo_softc *sc = (struct schizo_softc *)self; struct mainbus_attach_args *ma = aux; int busa; char *str; str = getpropstring(ma->ma_node, "compatible"); if (strcmp(str, "pci108e,a801") == 0) sc->sc_tomatillo = 1; sc->sc_node = ma->ma_node; sc->sc_dmat = ma->ma_dmatag; sc->sc_bust = ma->ma_bustag; sc->sc_ctrl = ma->ma_reg[1].ur_paddr - 0x10000UL; sc->sc_ign = INTIGN(ma->ma_upaid << INTMAP_IGN_SHIFT); if ((ma->ma_reg[0].ur_paddr & 0x00700000) == 0x00600000) busa = 1; else busa = 0; if (bus_space_map(sc->sc_bust, sc->sc_ctrl, sizeof(struct schizo_regs), 0, &sc->sc_ctrlh)) { printf(": failed to map registers\n"); return; } /* enable schizo ecc error interrupts */ schizo_write(sc, SCZ_ECCCTRL, schizo_read(sc, SCZ_ECCCTRL) | SCZ_ECCCTRL_EE_INTEN | SCZ_ECCCTRL_UE_INTEN | SCZ_ECCCTRL_CE_INTEN); schizo_init(sc, busa); } void schizo_init(struct schizo_softc *sc, int busa) { struct schizo_pbm *pbm; struct pcibus_attach_args pba; int *busranges = NULL, nranges; u_int64_t match, reg; pbm = (struct schizo_pbm *)malloc(sizeof(*pbm), M_DEVBUF, M_NOWAIT); if (pbm == NULL) panic("schizo: can't alloc schizo pbm"); bzero(pbm, sizeof(*pbm)); pbm->sp_sc = sc; pbm->sp_bus_a = busa; pbm->sp_regt = sc->sc_bust; if (getprop(sc->sc_node, "ranges", sizeof(struct schizo_range), &pbm->sp_nrange, (void **)&pbm->sp_range)) panic("schizo: can't get ranges"); if (getprop(sc->sc_node, "bus-range", sizeof(int), &nranges, (void **)&busranges)) panic("schizo: can't get bus-range"); printf(": \"%s\", version %d, ign %x, bus %c %d to %d\n", sc->sc_tomatillo ? "Tomatillo" : "Schizo", getpropint(sc->sc_node, "version#", 0), sc->sc_ign, busa ? 'A' : 'B', busranges[0], busranges[1]); if (bus_space_subregion(pbm->sp_regt, sc->sc_ctrlh, busa ? offsetof(struct schizo_regs, pbm_a) : offsetof(struct schizo_regs, pbm_b), sizeof(struct schizo_pbm_regs), &pbm->sp_regh)) { panic("schizo: unable to create PBM handle"); } printf("%s: ", sc->sc_dv.dv_xname); schizo_init_iommu(sc, pbm); match = schizo_read(sc, busa ? SCZ_PCIA_IO_MATCH : SCZ_PCIB_IO_MATCH); pbm->sp_confpaddr = match & ~0x8000000000000000UL; pbm->sp_memt = schizo_alloc_mem_tag(pbm); pbm->sp_iot = schizo_alloc_io_tag(pbm); pbm->sp_cfgt = schizo_alloc_config_tag(pbm); pbm->sp_dmat = schizo_alloc_dma_tag(pbm); if (bus_space_map(pbm->sp_cfgt, 0, 0x1000000, 0, &pbm->sp_cfgh)) panic("schizo: could not map config space"); pbm->sp_pc = schizo_alloc_chipset(pbm, sc->sc_node, &_sparc_pci_chipset); pbm->sp_pc->bustag = pbm->sp_cfgt; pbm->sp_pc->bushandle = pbm->sp_cfgh; pba.pba_busname = "pci"; pba.pba_domain = pci_ndomains++; pba.pba_bus = busranges[0]; pba.pba_bridgetag = NULL; pba.pba_pc = pbm->sp_pc; #if 0 pba.pba_flags = pbm->sp_flags; #endif pba.pba_dmat = pbm->sp_dmat; pba.pba_memt = pbm->sp_memt; pba.pba_iot = pbm->sp_iot; pba.pba_pc->intr_map = schizo_intr_map; free(busranges, M_DEVBUF); schizo_pbm_write(pbm, SCZ_PCI_INTR_RETRY, 5); /* clear out the bus errors */ schizo_pbm_write(pbm, SCZ_PCI_CTRL, schizo_pbm_read(pbm, SCZ_PCI_CTRL)); schizo_pbm_write(pbm, SCZ_PCI_AFSR, schizo_pbm_read(pbm, SCZ_PCI_AFSR)); if (busa) schizo_set_intr(sc, pbm, PIL_HIGH, schizo_pci_error, pbm, SCZ_PCIERR_A_INO, "pci_a"); else schizo_set_intr(sc, pbm, PIL_HIGH, schizo_pci_error, pbm, SCZ_PCIERR_B_INO, "pci_b"); reg = schizo_pbm_read(pbm, SCZ_PCI_CTRL); /* enable/disable error interrupts and arbiter */ reg |= SCZ_PCICTRL_EEN | SCZ_PCICTRL_MMU_INT | SCZ_PCICTRL_ARB; reg &= ~SCZ_PCICTRL_SBH_INT; schizo_pbm_write(pbm, SCZ_PCI_CTRL, reg); reg = schizo_pbm_read(pbm, SCZ_PCI_DIAG); reg &= ~(SCZ_PCIDIAG_D_RTRYARB | SCZ_PCIDIAG_D_RETRY | SCZ_PCIDIAG_D_INTSYNC); schizo_pbm_write(pbm, SCZ_PCI_DIAG, reg); /* double mapped */ schizo_set_intr(sc, pbm, PIL_HIGH, schizo_ue, sc, SCZ_UE_INO, "ue"); schizo_set_intr(sc, pbm, PIL_HIGH, schizo_ce, sc, SCZ_CE_INO, "ce"); schizo_set_intr(sc, pbm, PIL_HIGH, schizo_safari_error, sc, SCZ_SERR_INO, "safari"); config_found(&sc->sc_dv, &pba, schizo_print); } int schizo_ue(void *vsc) { struct schizo_softc *sc = vsc; panic("%s: uncorrectable error", sc->sc_dv.dv_xname); return (1); } int schizo_ce(void *vsc) { struct schizo_softc *sc = vsc; panic("%s: correctable error", sc->sc_dv.dv_xname); return (1); } int schizo_pci_error(void *vpbm) { struct schizo_pbm *sp = vpbm; struct schizo_softc *sc = sp->sp_sc; u_int64_t afsr, afar, ctrl, tfar; u_int32_t csr; afsr = schizo_pbm_read(sp, SCZ_PCI_AFSR); afar = schizo_pbm_read(sp, SCZ_PCI_AFAR); ctrl = schizo_pbm_read(sp, SCZ_PCI_CTRL); csr = schizo_cfg_read(sp, PCI_COMMAND_STATUS_REG); printf("%s: pci bus %c error\n", sc->sc_dv.dv_xname, sp->sp_bus_a ? 'A' : 'B'); printf("PCIAFSR=%lb\n", afsr, SCZ_PCIAFSR_BITS); printf("PCIAFAR=%lx\n", afar); printf("PCICTRL=%lb\n", ctrl, SCZ_PCICTRL_BITS); printf("PCICSR=%lb\n", csr, PCI_COMMAND_STATUS_BITS); if (ctrl & SCZ_PCICTRL_MMU_ERR) { ctrl = schizo_pbm_read(sp, SCZ_PCI_IOMMU_CTRL); printf("IOMMUCTRL=%lx\n", ctrl); if (sc->sc_tomatillo) { tfar = schizo_pbm_read(sp, TOM_PCI_IOMMU_TFAR); printf("IOMMUTFAR=%lx\n", ctrl); } } panic("%s: fatal", sc->sc_dv.dv_xname); return (1); } int schizo_safari_error(void *vsc) { struct schizo_softc *sc = vsc; panic("%s: safari error", sc->sc_dv.dv_xname); return (1); } void schizo_init_iommu(struct schizo_softc *sc, struct schizo_pbm *pbm) { struct iommu_state *is = &pbm->sp_is; int *vdma = NULL, nitem, tsbsize = 128 * 1024; u_int32_t iobase = -1; vaddr_t va; char *name; va = (vaddr_t)pbm->sp_flush[0x40]; is->is_bustag = pbm->sp_regt; if (bus_space_subregion(is->is_bustag, pbm->sp_regh, offsetof(struct schizo_pbm_regs, iommu), sizeof(struct iommureg), &is->is_iommu)) { panic("schizo: unable to create iommu handle"); } is->is_sb[0] = &pbm->sp_sb; is->is_sb[0]->sb_bustag = is->is_bustag; is->is_sb[0]->sb_flush = (void *)(va & ~0x3f); if (bus_space_subregion(is->is_bustag, pbm->sp_regh, offsetof(struct schizo_pbm_regs, strbuf), sizeof(struct iommu_strbuf), &is->is_sb[0]->sb_sb)) { panic("schizo: unable to create streaming buffer handle"); is->is_sb[0]->sb_flush = NULL; } #if 1 /* XXX disable the streaming buffers for now */ bus_space_write_8(is->is_bustag, is->is_sb[0]->sb_sb, STRBUFREG(strbuf_ctl), bus_space_read_8(is->is_bustag, is->is_sb[0]->sb_sb, STRBUFREG(strbuf_ctl)) & ~STRBUF_EN); is->is_sb[0]->sb_flush = NULL; #endif name = (char *)malloc(32, M_DEVBUF, M_NOWAIT); if (name == NULL) panic("couldn't malloc iommu name"); snprintf(name, 32, "%s dvma", sc->sc_dv.dv_xname); /* * Separate the men from the boys. If the `virtual-dma' * property exists, use it. */ if (!getprop(sc->sc_node, "virtual-dma", sizeof(vdma), &nitem, (void **)&vdma)) { /* Damn. Gotta use these values. */ iobase = vdma[0]; #define TSBCASE(x) case 1 << ((x) + 23): tsbsize = (x); break switch (vdma[1]) { TSBCASE(1); TSBCASE(2); TSBCASE(3); TSBCASE(4); TSBCASE(5); TSBCASE(6); default: printf("bogus tsb size %x, using 7\n", vdma[1]); TSBCASE(7); } #undef TSBCASE DPRINTF(SDB_BUSMAP, ("schizo_iommu_init: iobase=0x%x\n", iobase)); free(vdma, M_DEVBUF); } else { DPRINTF(SDB_BUSMAP, ("schizo_iommu_init: getprop failed, " "iobase=0x%x\n", iobase)); } iommu_init(name, is, tsbsize, iobase); } int schizo_print(void *aux, const char *p) { if (p == NULL) return (UNCONF); return (QUIET); } /* * Bus-specific interrupt mapping */ int schizo_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) { struct schizo_pbm *sp = pa->pa_pc->cookie; struct schizo_softc *sc = sp->sp_sc; u_int dev; if (*ihp != (pci_intr_handle_t)-1) { *ihp |= sc->sc_ign; return (0); } /* * We didn't find a PROM mapping for this interrupt. Try to * construct one ourselves based on the swizzled interrupt pin * and the interrupt mapping for PCI slots documented in the * UltraSPARC-IIi User's Manual. */ if (pa->pa_intrpin == 0) return (-1); /* * This deserves some documentation. Should anyone * have anything official looking, please speak up. */ dev = pa->pa_device - 1; *ihp = (pa->pa_intrpin - 1) & INTMAP_PCIINT; *ihp |= (dev << 2) & INTMAP_PCISLOT; *ihp |= sc->sc_ign; return (0); } void schizo_set_intr(struct schizo_softc *sc, struct schizo_pbm *pbm, int ipl, int (*handler)(void *), void *arg, int ino, char *what) { struct intrhand *ih; volatile u_int64_t *map, *clr; struct schizo_pbm_regs *pbmreg; char *name; int nlen; pbmreg = bus_space_vaddr(pbm->sp_regt, pbm->sp_regh); map = &pbmreg->imap[ino]; clr = &pbmreg->iclr[ino]; ino |= sc->sc_ign; nlen = strlen(sc->sc_dv.dv_xname) + 1 + strlen(what) + 1; name = malloc(nlen, M_DEVBUF, M_WAITOK); snprintf(name, nlen, "%s:%s", sc->sc_dv.dv_xname, what); ih = bus_intr_allocate(pbm->sp_regt, handler, arg, ino, ipl, map, clr, name); if (ih == NULL) { printf("set_intr failed...\n"); free(name, M_DEVBUF); return; } intr_establish(ih->ih_pil, ih); } bus_space_tag_t schizo_alloc_mem_tag(struct schizo_pbm *sp) { return (_schizo_alloc_bus_tag(sp, "mem", 0x02, /* 32-bit mem space (where's the #define???) */ ASI_PRIMARY, ASI_PRIMARY_LITTLE)); } bus_space_tag_t schizo_alloc_io_tag(struct schizo_pbm *sp) { return (_schizo_alloc_bus_tag(sp, "io", 0x01, /* IO space (where's the #define???) */ ASI_PHYS_NON_CACHED_LITTLE, ASI_PHYS_NON_CACHED)); } bus_space_tag_t schizo_alloc_config_tag(struct schizo_pbm *sp) { return (_schizo_alloc_bus_tag(sp, "cfg", 0x00, /* Config space (where's the #define???) */ ASI_PHYS_NON_CACHED_LITTLE, ASI_PHYS_NON_CACHED)); } bus_space_tag_t _schizo_alloc_bus_tag(struct schizo_pbm *pbm, const char *name, int ss, int asi, int sasi) { struct schizo_softc *sc = pbm->sp_sc; struct sparc_bus_space_tag *bt; bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT); if (bt == NULL) panic("schizo: could not allocate bus tag"); bzero(bt, sizeof *bt); snprintf(bt->name, sizeof(bt->name), "%s-pbm_%s(%d/%2.2x)", sc->sc_dv.dv_xname, name, ss, asi); bt->cookie = pbm; bt->parent = sc->sc_bust; bt->default_type = ss; bt->asi = asi; bt->sasi = sasi; bt->sparc_bus_map = _schizo_bus_map; bt->sparc_bus_mmap = _schizo_bus_mmap; bt->sparc_intr_establish = _schizo_intr_establish; return (bt); } bus_dma_tag_t schizo_alloc_dma_tag(struct schizo_pbm *pbm) { struct schizo_softc *sc = pbm->sp_sc; bus_dma_tag_t dt, pdt = sc->sc_dmat; dt = (bus_dma_tag_t)malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT); if (dt == NULL) panic("schizo: could not alloc dma tag"); bzero(dt, sizeof(*dt)); dt->_cookie = pbm; dt->_parent = pdt; dt->_dmamap_create = schizo_dmamap_create; dt->_dmamap_destroy = iommu_dvmamap_destroy; dt->_dmamap_load = iommu_dvmamap_load; dt->_dmamap_load_raw = iommu_dvmamap_load_raw; dt->_dmamap_unload = iommu_dvmamap_unload; dt->_dmamap_sync = iommu_dvmamap_sync; dt->_dmamem_alloc = iommu_dvmamem_alloc; dt->_dmamem_free = iommu_dvmamem_free; dt->_dmamem_map = iommu_dvmamem_map; dt->_dmamem_unmap = iommu_dvmamem_unmap; return (dt); } pci_chipset_tag_t schizo_alloc_chipset(struct schizo_pbm *pbm, int node, pci_chipset_tag_t pc) { pci_chipset_tag_t npc; npc = malloc(sizeof *npc, M_DEVBUF, M_NOWAIT); if (npc == NULL) panic("could not allocate pci_chipset_tag_t"); memcpy(npc, pc, sizeof *pc); npc->cookie = pbm; npc->rootnode = node; return (npc); } int schizo_dmamap_create(bus_dma_tag_t t, bus_dma_tag_t t0, bus_size_t size, int nsegments, bus_size_t maxsegsz, bus_size_t boundary, int flags, bus_dmamap_t *dmamp) { struct schizo_pbm *sp = t->_cookie; return (iommu_dvmamap_create(t, t0, &sp->sp_sb, size, nsegments, maxsegsz, boundary, flags, dmamp)); } int _schizo_bus_map(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t offset, bus_size_t size, int flags, bus_space_handle_t *hp) { struct schizo_pbm *pbm = t->cookie; int i, ss; DPRINTF(SDB_BUSMAP, ("_schizo_bus_map: type %d off %qx sz %qx flags %d", t->default_type, (unsigned long long)offset, (unsigned long long)size, flags)); ss = t->default_type; DPRINTF(SDB_BUSMAP, (" cspace %d", ss)); if (t->parent == 0 || t->parent->sparc_bus_map == 0) { printf("\n_schizo_bus_map: invalid parent"); return (EINVAL); } if (flags & BUS_SPACE_MAP_PROMADDRESS) { return ((*t->parent->sparc_bus_map) (t, t0, offset, size, flags, hp)); } for (i = 0; i < pbm->sp_nrange; i++) { bus_addr_t paddr; if (((pbm->sp_range[i].cspace >> 24) & 0x03) != ss) continue; paddr = pbm->sp_range[i].phys_lo + offset; paddr |= ((bus_addr_t)pbm->sp_range[i].phys_hi) << 32; return ((*t->parent->sparc_bus_map) (t, t0, paddr, size, flags, hp)); } return (EINVAL); } paddr_t _schizo_bus_mmap(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t paddr, off_t off, int prot, int flags) { bus_addr_t offset = paddr; struct schizo_pbm *pbm = t->cookie; int i, ss; ss = t->default_type; DPRINTF(SDB_BUSMAP, ("_schizo_bus_mmap: prot %d flags %d pa %qx\n", prot, flags, (unsigned long long)paddr)); if (t->parent == 0 || t->parent->sparc_bus_mmap == 0) { printf("\n_schizo_bus_mmap: invalid parent"); return (-1); } for (i = 0; i < pbm->sp_nrange; i++) { bus_addr_t paddr; if (((pbm->sp_range[i].cspace >> 24) & 0x03) != ss) continue; paddr = pbm->sp_range[i].phys_lo + offset; paddr |= ((bus_addr_t)pbm->sp_range[i].phys_hi<<32); return ((*t->parent->sparc_bus_mmap) (t, t0, paddr, off, prot, flags)); } return (-1); } void * _schizo_intr_establish(bus_space_tag_t t, bus_space_tag_t t0, int ihandle, int level, int flags, int (*handler)(void *), void *arg, const char *what) { struct schizo_pbm *pbm = t->cookie; struct intrhand *ih = NULL; volatile u_int64_t *intrmapptr = NULL, *intrclrptr = NULL; int ino; long vec = INTVEC(ihandle); vec = INTVEC(ihandle); ino = INTINO(vec); if (level == IPL_NONE) level = INTLEV(vec); if (level == IPL_NONE) { printf(": no IPL, setting IPL 2.\n"); level = 2; } if ((flags & BUS_INTR_ESTABLISH_SOFTINTR) == 0) { struct schizo_pbm_regs *pbmreg; pbmreg = bus_space_vaddr(pbm->sp_regt, pbm->sp_regh); intrmapptr = &pbmreg->imap[ino]; intrclrptr = &pbmreg->iclr[ino]; if (INTIGN(vec) == 0) ino |= (*intrmapptr) & INTMAP_IGN; else ino |= vec & INTMAP_IGN; } ih = bus_intr_allocate(t0, handler, arg, ino, level, intrmapptr, intrclrptr, what); if (ih == NULL) return (NULL); intr_establish(ih->ih_pil, ih); if (intrmapptr != NULL) { u_int64_t intrmap; intrmap = *intrmapptr; intrmap |= INTMAP_V; *intrmapptr = intrmap; intrmap = *intrmapptr; ih->ih_number |= intrmap & INTMAP_INR; } return (ih); } const struct cfattach schizo_ca = { sizeof(struct schizo_softc), schizo_match, schizo_attach }; struct cfdriver schizo_cd = { NULL, "schizo", DV_DULL };