/* $NetBSD: atppc_puc.c,v 1.14 2014/03/29 19:28:24 christos Exp $ */ /*- * Copyright (c) 2004 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jaromir Dolecek. * * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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 "opt_atppc.h" #include __KERNEL_RCSID(0, "$NetBSD: atppc_puc.c,v 1.14 2014/03/29 19:28:24 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include static int atppc_puc_match(device_t, cfdata_t, void *); static void atppc_puc_attach(device_t, device_t, void *); struct atppc_puc_softc { /* Machine independent device data */ struct atppc_softc sc_atppc; bus_dmamap_t sc_dmamap; }; CFATTACH_DECL_NEW(atppc_puc, sizeof(struct atppc_puc_softc), atppc_puc_match, atppc_puc_attach, NULL, NULL); static int atppc_puc_dma_setup(struct atppc_puc_softc *); static int atppc_puc_dma_start(struct atppc_softc *, void *, u_int, u_int8_t); static int atppc_puc_dma_finish(struct atppc_softc *); static int atppc_puc_dma_abort(struct atppc_softc *); static int atppc_puc_dma_malloc(device_t, void **, bus_addr_t *, bus_size_t); static void atppc_puc_dma_free(device_t, void **, bus_addr_t *, bus_size_t); /* * atppc_acpi_match: autoconf(9) match routine */ static int atppc_puc_match(device_t parent, cfdata_t match, void *aux) { struct puc_attach_args *aa = aux; /* * Locators already matched, just check the type. */ if (aa->type != PUC_PORT_TYPE_LPT) return (0); return (1); } static void atppc_puc_attach(device_t parent, device_t self, void *aux) { struct atppc_softc *sc = device_private(self); struct atppc_puc_softc *psc = device_private(self); struct puc_attach_args *aa = aux; const char *intrstr; char intrbuf[PCI_INTRSTR_LEN]; sc->sc_dev_ok = ATPPC_NOATTACH; printf(": AT Parallel Port\n"); /* Attach */ sc->sc_dev = self; sc->sc_iot = aa->t; sc->sc_ioh = aa->h; sc->sc_dmat = aa->dmat; sc->sc_has = 0; intrstr = pci_intr_string(aa->pc, aa->intrhandle, intrbuf, sizeof(intrbuf)); sc->sc_ieh = pci_intr_establish(aa->pc, aa->intrhandle, IPL_TTY, atppcintr, sc); if (sc->sc_ieh == NULL) { aprint_error_dev(sc->sc_dev, "couldn't establish interrupt"); if (intrstr != NULL) aprint_error(" at %s", intrstr); aprint_error("\n"); return; } aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr); sc->sc_has |= ATPPC_HAS_INTR; /* setup DMA hooks */ if (atppc_puc_dma_setup(psc) == 0) { sc->sc_has |= ATPPC_HAS_DMA; sc->sc_dma_start = atppc_puc_dma_start; sc->sc_dma_finish = atppc_puc_dma_finish; sc->sc_dma_abort = atppc_puc_dma_abort; sc->sc_dma_malloc = atppc_puc_dma_malloc; sc->sc_dma_free = atppc_puc_dma_free; } /* Finished attach */ sc->sc_dev_ok = ATPPC_ATTACHED; /* Run soft configuration attach */ atppc_sc_attach(sc); } /* Setup DMA structures */ static int atppc_puc_dma_setup(struct atppc_puc_softc *psc) { return EOPNOTSUPP; /* XXX DMA not tested yet */ #if 0 struct atppc_softc *sc = (struct atppc_softc *)psc; int error; #define BUFSIZE PAGE_SIZE /* XXX see lptvar.h */ if ((error = bus_dmamap_create(sc->sc_dmat, BUFSIZE, 1, BUFSIZE, 0, BUS_DMA_NOWAIT, &psc->sc_dmamap))) return error; return (0); #endif } /* Start DMA operation over PCI bus */ static int atppc_puc_dma_start(struct atppc_softc *sc, void *buf, u_int nbytes, u_int8_t mode) { struct atppc_puc_softc *psc = (struct atppc_puc_softc *)sc; bus_dmamap_sync(sc->sc_dmat, psc->sc_dmamap, 0, nbytes, (mode == ATPPC_DMA_MODE_WRITE) ? BUS_DMASYNC_PREWRITE : BUS_DMASYNC_PREREAD); return (0); } /* Stop DMA operation over PCI bus */ static int atppc_puc_dma_finish(struct atppc_softc *sc) { struct atppc_puc_softc *psc = (struct atppc_puc_softc *)sc; /* * We don't know direction of DMA, so sync both. We can safely * assume the dma map is loaded. */ bus_dmamap_sync(sc->sc_dmat, psc->sc_dmamap, 0, psc->sc_dmamap->dm_segs[0].ds_len, BUS_DMASYNC_POSTWRITE|BUS_DMASYNC_POSTREAD); return (0); } /* Abort DMA operation over PCI bus */ int atppc_puc_dma_abort(struct atppc_softc * lsc) { /* Nothing to do - we do not need to sync, op is aborted */ return (0); } /* Allocate memory for DMA over PCI bus */ int atppc_puc_dma_malloc(device_t dev, void **buf, bus_addr_t *bus_addr, bus_size_t size) { struct atppc_puc_softc *psc = device_private(dev); struct atppc_softc *sc = &psc->sc_atppc; int error; error = bus_dmamap_load(sc->sc_dmat, psc->sc_dmamap, *buf, size, NULL /* kernel address */, BUS_DMA_WAITOK|BUS_DMA_STREAMING); if (error) return (error); *bus_addr = psc->sc_dmamap->dm_segs[0].ds_addr; return (0); } /* Free memory allocated by atppc_isa_dma_malloc() */ void atppc_puc_dma_free(device_t dev, void **buf, bus_addr_t *bus_addr, bus_size_t size) { struct atppc_puc_softc *psc = device_private(dev); struct atppc_softc *sc = &psc->sc_atppc; return (bus_dmamap_unload(sc->sc_dmat, psc->sc_dmamap)); }