/* $NetBSD: cac_eisa.c,v 1.12 2006/03/29 06:32:36 thorpej Exp $ */ /*- * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Doran. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 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) 2000 Jonathan Lemon * Copyright (c) 1999 by Matthew N. Dodd * 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, * without modification, immediately at the beginning of the file. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ /* * EISA front-end for cac(4) driver. */ #include __KERNEL_RCSID(0, "$NetBSD: cac_eisa.c,v 1.12 2006/03/29 06:32:36 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #define CAC_EISA_SLOT_OFFSET 0x0c88 #define CAC_EISA_IOSIZE 0x0017 #define CAC_EISA_IOCONF 0x38 static void cac_eisa_attach(struct device *, struct device *, void *); static int cac_eisa_match(struct device *, struct cfdata *, void *); static struct cac_ccb *cac_eisa_l0_completed(struct cac_softc *); static int cac_eisa_l0_fifo_full(struct cac_softc *); static void cac_eisa_l0_intr_enable(struct cac_softc *, int); static int cac_eisa_l0_intr_pending(struct cac_softc *); static void cac_eisa_l0_submit(struct cac_softc *, struct cac_ccb *); CFATTACH_DECL(cac_eisa, sizeof(struct cac_softc), cac_eisa_match, cac_eisa_attach, NULL, NULL); static const struct cac_linkage cac_eisa_l0 = { cac_eisa_l0_completed, cac_eisa_l0_fifo_full, cac_eisa_l0_intr_enable, cac_eisa_l0_intr_pending, cac_eisa_l0_submit }; struct cac_eisa_type { const char *ct_prodstr; const char *ct_typestr; const struct cac_linkage *ct_linkage; } static cac_eisa_type[] = { { "CPQ4001", "IDA", &cac_eisa_l0 }, { "CPQ4002", "IDA-2", &cac_eisa_l0 }, { "CPQ4010", "IEAS", &cac_eisa_l0 }, { "CPQ4020", "SMART", &cac_eisa_l0 }, { "CPQ4030", "SMART-2/E", &cac_l0 }, }; static int cac_eisa_match(struct device *parent, struct cfdata *match, void *aux) { struct eisa_attach_args *ea; int i; ea = aux; for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) return (1); return (0); } static void cac_eisa_attach(struct device *parent, struct device *self, void *aux) { struct eisa_attach_args *ea; bus_space_handle_t ioh; eisa_chipset_tag_t ec; eisa_intr_handle_t ih; struct cac_softc *sc; bus_space_tag_t iot; const char *intrstr; int irq, i; ea = aux; sc = device_private(self); iot = ea->ea_iot; ec = ea->ea_ec; if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + CAC_EISA_SLOT_OFFSET, CAC_EISA_IOSIZE, 0, &ioh)) { printf("can't map i/o space\n"); return; } sc->sc_iot = iot; sc->sc_ioh = ioh; sc->sc_dmat = ea->ea_dmat; /* * Map and establish the interrupt. */ switch (bus_space_read_1(iot, ioh, CAC_EISA_IOCONF) & 0xf0) { case 0x20: irq = 10; break; case 0x10: irq = 11; break; case 0x40: irq = 14; break; case 0x80: irq = 15; break; default: printf("controller on invalid IRQ\n"); return; } if (eisa_intr_map(ec, irq, &ih)) { printf("can't map interrupt (%d)\n", irq); return; } intrstr = eisa_intr_string(ec, ih); if ((sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, cac_intr, sc)) == NULL) { printf("can't establish interrupt"); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); return; } /* * Print board type and attach to the bus-independent code. */ for (i = 0; i < sizeof(cac_eisa_type) / sizeof(cac_eisa_type[0]); i++) if (strcmp(ea->ea_idstring, cac_eisa_type[i].ct_prodstr) == 0) break; printf(": Compaq %s\n", cac_eisa_type[i].ct_typestr); memcpy(&sc->sc_cl, cac_eisa_type[i].ct_linkage, sizeof(sc->sc_cl)); cac_init(sc, intrstr, 0); } /* * Linkage specific to EISA boards. */ static int cac_eisa_l0_fifo_full(struct cac_softc *sc) { return ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & CAC_EISA_CHANNEL_CLEAR) == 0); } static void cac_eisa_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) { u_int16_t size; /* * On these boards, `ccb_hdr.size' is actually for control flags. * Set it to zero and pass the value by means of an I/O port. */ size = le16toh(ccb->ccb_hdr.size) << 2; ccb->ccb_hdr.size = 0; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, (caddr_t)ccb - sc->sc_ccbs, sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_CLEAR); cac_outl(sc, CAC_EISAREG_LIST_ADDR, ccb->ccb_paddr); cac_outw(sc, CAC_EISAREG_LIST_LEN, size); cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); } static struct cac_ccb * cac_eisa_l0_completed(struct cac_softc *sc) { struct cac_ccb *ccb; u_int32_t off; u_int8_t status; if ((cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & CAC_EISA_CHANNEL_BUSY) == 0) return (NULL); cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, CAC_EISA_CHANNEL_BUSY); off = cac_inl(sc, CAC_EISAREG_COMPLETE_ADDR); status = cac_inb(sc, CAC_EISAREG_LIST_STATUS); cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_CLEAR); if (off == 0) return (NULL); off = (off & ~3) - sc->sc_ccbs_paddr; ccb = (struct cac_ccb *)(sc->sc_ccbs + off); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); ccb->ccb_req.error = status; return (ccb); } static int cac_eisa_l0_intr_pending(struct cac_softc *sc) { return (cac_inb(sc, CAC_EISAREG_SYSTEM_DOORBELL) & CAC_EISA_CHANNEL_BUSY); } static void cac_eisa_l0_intr_enable(struct cac_softc *sc, int state) { if (state) { cac_outb(sc, CAC_EISAREG_SYSTEM_DOORBELL, ~CAC_EISA_CHANNEL_CLEAR); cac_outb(sc, CAC_EISAREG_LOCAL_DOORBELL, CAC_EISA_CHANNEL_BUSY); cac_outb(sc, CAC_EISAREG_INTR_MASK, CAC_INTR_ENABLE); cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_ENABLE); } else cac_outb(sc, CAC_EISAREG_SYSTEM_MASK, CAC_INTR_DISABLE); }