/* $NetBSD: fdc_jazzio.c,v 1.15 2011/07/01 19:25:41 dyoung Exp $ */ /* $OpenBSD: fd.c,v 1.6 1998/10/03 21:18:57 millert Exp $ */ /* NetBSD: fd.c,v 1.78 1995/07/04 07:23:09 mycroft Exp */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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. */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Don Ahn. * * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * @(#)fd.c 7.4 (Berkeley) 5/25/91 */ #include __KERNEL_RCSID(0, "$NetBSD: fdc_jazzio.c,v 1.15 2011/07/01 19:25:41 dyoung Exp $"); #include #include #include #include #include #include #include #include #include #include #include /* controller driver configuration */ static int fdc_jazzio_probe(device_t, cfdata_t, void *); static void fdc_jazzio_attach(device_t, device_t, void *); /* MD DMA hook functions */ static void fdc_jazzio_dma_start(struct fdc_softc *, void *, size_t, int); static void fdc_jazzio_dma_abort(struct fdc_softc *); static void fdc_jazzio_dma_done(struct fdc_softc *); /* software state, per controller */ struct fdc_jazzio_softc { struct fdc_softc sc_fdc; /* base fdc device */ bus_space_handle_t sc_baseioh; /* base I/O handle */ bus_space_handle_t sc_dmaioh; /* DMA I/O handle */ bus_dma_tag_t sc_dmat; /* bus_dma tag */ bus_dmamap_t sc_dmamap; /* bus_dma map */ int sc_datain; /* data direction */ }; CFATTACH_DECL_NEW(fdc_jazzio, sizeof(struct fdc_jazzio_softc), fdc_jazzio_probe, fdc_jazzio_attach, NULL, NULL); #define FDC_NPORT 6 #define FDC_OFFSET 2 /* Should we use bus_space_subregion() or not? */ static int fdc_jazzio_probe(device_t parent, cfdata_t cf, void *aux) { struct jazzio_attach_args *ja = aux; bus_space_tag_t iot; bus_space_handle_t base_ioh, ioh; int rv; if (strcmp(ja->ja_name, "I82077") != 0) return 0; iot = ja->ja_bust; rv = 0; /* Map the I/O space. */ if (bus_space_map(iot, ja->ja_addr, FDC_OFFSET + FDC_NPORT, 0, &base_ioh)) return 0; if (bus_space_subregion(iot, base_ioh, FDC_OFFSET, FDC_NPORT, &ioh)) goto out; /* reset */ bus_space_write_1(iot, ioh, FDOUT, 0); delay(100); bus_space_write_1(iot, ioh, FDOUT, FDO_FRST); /* see if it can handle a command */ if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) goto out; out_fdc(iot, ioh, 0xdf); /* XXX */ out_fdc(iot, ioh, 2); /* XXX */ rv = 1; out: bus_space_unmap(iot, base_ioh, FDC_OFFSET + FDC_NPORT); return rv; } static void fdc_jazzio_attach(device_t parent, device_t self, void *aux) { struct fdc_jazzio_softc *jsc = device_private(self); struct fdc_softc *fdc = &jsc->sc_fdc; struct jazzio_attach_args *ja = aux; fdc->sc_dev = self; fdc->sc_iot = ja->ja_bust; fdc->sc_maxiosize = MAXPHYS; fdc->sc_dma_start = fdc_jazzio_dma_start; fdc->sc_dma_abort = fdc_jazzio_dma_abort; fdc->sc_dma_done = fdc_jazzio_dma_done; jsc->sc_dmat = ja->ja_dmat; if (bus_space_map(fdc->sc_iot, ja->ja_addr, FDC_OFFSET + FDC_NPORT, 0, &jsc->sc_baseioh)) { aprint_error(": unable to map I/O space\n"); return; } if (bus_space_subregion(fdc->sc_iot, jsc->sc_baseioh, FDC_OFFSET, FDC_NPORT, &fdc->sc_ioh)) { aprint_error(": unable to subregion I/O space\n"); goto out_unmap1; } if (bus_space_map(fdc->sc_iot, jazzio_conf->jc_fdcdmareg, R4030_DMA_RANGE, 0, &jsc->sc_dmaioh)) { aprint_error(": unable to map DMA I/O space\n"); goto out_unmap1; } if (bus_dmamap_create(jsc->sc_dmat, MAXPHYS, 1, MAXPHYS, 0, BUS_DMA_ALLOCNOW|BUS_DMA_NOWAIT, &jsc->sc_dmamap)) { aprint_error(": unable to create DMA map\n"); goto out_unmap2; } aprint_normal("\n"); jazzio_intr_establish(ja->ja_intr, fdcintr, fdc); fdcattach(fdc); return; out_unmap2: bus_space_unmap(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_RANGE); out_unmap1: bus_space_unmap(fdc->sc_iot, jsc->sc_baseioh, FDC_OFFSET + FDC_NPORT); } static void fdc_jazzio_dma_start(struct fdc_softc *fdc, void *addr, size_t size, int datain) { struct fdc_jazzio_softc *jsc = (struct fdc_jazzio_softc *)fdc; /* halt DMA */ bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_ENAB, 0); bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_MODE, 0); jsc->sc_datain = datain; bus_dmamap_load(jsc->sc_dmat, jsc->sc_dmamap, addr, size, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | (datain ? BUS_DMA_READ : BUS_DMA_WRITE)); bus_dmamap_sync(jsc->sc_dmat, jsc->sc_dmamap, 0, jsc->sc_dmamap->dm_mapsize, datain ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); /* load new transfer parameters */ bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_ADDR, jsc->sc_dmamap->dm_segs[0].ds_addr); bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_COUNT, jsc->sc_dmamap->dm_segs[0].ds_len); bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_MODE, R4030_DMA_MODE_160NS | R4030_DMA_MODE_8); /* start DMA */ bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_ENAB, R4030_DMA_ENAB_RUN | (datain ? R4030_DMA_ENAB_READ : R4030_DMA_ENAB_WRITE)); } static void fdc_jazzio_dma_abort(struct fdc_softc *fdc) { struct fdc_jazzio_softc *jsc = (struct fdc_jazzio_softc *)fdc; /* halt DMA */ bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_ENAB, 0); bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_MODE, 0); } static void fdc_jazzio_dma_done(struct fdc_softc *fdc) { struct fdc_jazzio_softc *jsc = (struct fdc_jazzio_softc *)fdc; /* halt DMA */ bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_COUNT, 0); bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_ENAB, 0); bus_space_write_4(fdc->sc_iot, jsc->sc_dmaioh, R4030_DMA_MODE, 0); bus_dmamap_sync(jsc->sc_dmat, jsc->sc_dmamap, 0, jsc->sc_dmamap->dm_mapsize, jsc->sc_datain ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(jsc->sc_dmat, jsc->sc_dmamap); }