312 lines
9.6 KiB
C
312 lines
9.6 KiB
C
/* $NetBSD: fwnode.c,v 1.15 2002/09/27 20:38:09 thorpej Exp $ */
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/*
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* Copyright (c) 2001,2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by James Chacon.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: fwnode.c,v 1.15 2002/09/27 20:38:09 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <dev/std/ieee1212var.h>
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#include <dev/std/ieee1212reg.h>
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#include <dev/ieee1394/ieee1394reg.h>
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#include <dev/ieee1394/fwnodereg.h>
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#include <dev/ieee1394/ieee1394var.h>
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#include <dev/ieee1394/fwnodevar.h>
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static const char * const ieee1394_speeds[] = { IEEE1394_SPD_STRINGS };
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int fwnode_match(struct device *, struct cfdata *, void *);
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void fwnode_attach(struct device *, struct device *, void *);
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int fwnode_detach(struct device *, int);
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static void fwnode_configrom_input(struct ieee1394_abuf *, int);
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static int fwnode_print(void *, const char *);
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#ifdef FWNODE_DEBUG
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static void fwnode_dump_rom(struct fwnode_softc *,u_int32_t *, u_int32_t);
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#endif
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#ifdef FWNODE_DEBUG
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#define DPRINTF(x) if (fwnodedebug) printf x
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#define DPRINTFN(n,x) if (fwnodedebug>(n)) printf x
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int fwnodedebug = 1;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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const struct cfattach fwnode_ca = {
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sizeof(struct fwnode_softc), fwnode_match, fwnode_attach,
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fwnode_detach
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};
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int
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fwnode_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct ieee1394_attach_args *fwa = aux;
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if (strcmp(fwa->name, "fwnode") == 0)
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return 1;
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return 0;
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}
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void
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fwnode_attach(struct device *parent, struct device *self, void *aux)
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{
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struct fwnode_softc *sc = (struct fwnode_softc *)self;
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struct ieee1394_softc *psc = (struct ieee1394_softc *)parent;
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struct ieee1394_attach_args *fwa = aux;
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struct ieee1394_abuf *ab;
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ab = malloc(sizeof(struct ieee1394_abuf), M_1394DATA, M_WAITOK|M_ZERO);
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ab->ab_data = malloc(4, M_1394DATA, M_WAITOK);
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ab->ab_data[0] = 0;
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sc->sc_sc1394.sc1394_node_id = fwa->nodeid;
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memcpy(sc->sc_sc1394.sc1394_guid, fwa->uid, 8);
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sc->sc1394_read = fwa->read;
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sc->sc1394_write = fwa->write;
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sc->sc1394_inreg = fwa->inreg;
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sc->sc1394_unreg = fwa->unreg;
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/* XXX. Fix the fw code to use the generic routines. */
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sc->sc_sc1394.sc1394_ifinreg = psc->sc1394_ifinreg;
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sc->sc_sc1394.sc1394_ifoutput = psc->sc1394_ifoutput;
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printf(" Node %d: UID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
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sc->sc_sc1394.sc1394_node_id,
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sc->sc_sc1394.sc1394_guid[0], sc->sc_sc1394.sc1394_guid[1],
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sc->sc_sc1394.sc1394_guid[2], sc->sc_sc1394.sc1394_guid[3],
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sc->sc_sc1394.sc1394_guid[4], sc->sc_sc1394.sc1394_guid[5],
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sc->sc_sc1394.sc1394_guid[6], sc->sc_sc1394.sc1394_guid[7]);
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ab->ab_req = (struct ieee1394_softc *)sc;
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ab->ab_addr = CSR_BASE + CSR_CONFIG_ROM;
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ab->ab_length = 4;
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ab->ab_retlen = 0;
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ab->ab_cbarg = NULL;
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ab->ab_cb = fwnode_configrom_input;
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sc->sc1394_read(ab);
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}
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int
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fwnode_detach(struct device *self, int flags)
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{
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struct fwnode_softc *sc = (struct fwnode_softc *)self;
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struct device **children;
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if (sc->sc_children) {
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children = sc->sc_children;
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while (*children++)
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config_detach(*children, 0);
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free(sc->sc_children, M_DEVBUF);
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}
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if (sc->sc_sc1394.sc1394_configrom &&
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sc->sc_sc1394.sc1394_configrom_len)
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free(sc->sc_sc1394.sc1394_configrom, M_1394DATA);
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if (sc->sc_configrom)
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p1212_free(sc->sc_configrom);
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return 0;
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}
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/*
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* This code is trying to build a complete image of the ROM in memory.
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* This is done all here to keep the bus_read logic/callback for the ROM in one
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* place since reading the whole ROM may require lots of small reads up front
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* and building separate callback handlers for each step would be even worse.
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*/
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static void
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fwnode_configrom_input(struct ieee1394_abuf *ab, int rcode)
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{
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struct fwnode_softc *sc = (struct fwnode_softc *)ab->ab_req;
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u_int32_t val;
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if (rcode != IEEE1394_RCODE_COMPLETE) {
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DPRINTF(("Aborting configrom input, rcode: %d\n", rcode));
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#ifdef FWNODE_DEBUG
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fwnode_dump_rom(sc, ab->ab_data, ab->ab_retlen);
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#endif
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free(ab->ab_data, M_1394DATA);
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free(ab, M_1394DATA);
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return;
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}
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if (ab->ab_cbarg)
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panic("Got an invalid abuf on callback");
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if (ab->ab_length != ab->ab_retlen) {
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DPRINTF(("%s: config rom short read. Expected :%d, received: "
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"%d. Not attaching\n", sc->sc_sc1394.sc1394_dev.dv_xname,
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ab->ab_length, ab->ab_retlen));
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free(ab->ab_data, M_1394DATA);
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free(ab, M_1394DATA);
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return;
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}
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if (ab->ab_retlen % 4) {
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DPRINTF(("%s: configrom read of invalid length: %d\n",
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sc->sc_sc1394.sc1394_dev.dv_xname, ab->ab_retlen));
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free(ab->ab_data, M_1394DATA);
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free(ab, M_1394DATA);
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return;
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}
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ab->ab_retlen = ab->ab_retlen / 4;
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if (p1212_iscomplete(ab->ab_data, &ab->ab_retlen) == -1) {
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DPRINTF(("%s: configrom parse error\n",
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sc->sc_sc1394.sc1394_dev.dv_xname));
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free(ab->ab_data, M_1394DATA);
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free(ab, M_1394DATA);
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return;
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}
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#ifdef DIAGNOSTIC
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if (ab->ab_retlen < (ab->ab_length / 4))
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panic("Configrom shrank during iscomplete check?");
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#endif
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if (ab->ab_retlen > (ab->ab_length / 4)) {
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free(ab->ab_data, M_1394DATA);
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ab->ab_data = malloc(ab->ab_retlen * 4, M_1394DATA,
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M_WAITOK|M_ZERO);
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ab->ab_addr = CSR_BASE + CSR_CONFIG_ROM;
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ab->ab_length = ab->ab_retlen * 4;
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ab->ab_retlen = 0;
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ab->ab_cbarg = NULL;
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ab->ab_cb = fwnode_configrom_input;
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sc->sc1394_read(ab);
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return;
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} else {
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sc->sc_sc1394.sc1394_configrom_len = ab->ab_retlen;
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sc->sc_sc1394.sc1394_configrom = ab->ab_data;
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ab->ab_data = NULL;
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free(ab, M_1394DATA);
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/*
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* Set P1212_ALLOW_DEPENDENT_INFO_OFFSET_TYPE and
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* P1212_ALLOW_DEPENDENT_INFO_IMMED_TYPE as some protocols
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* such as SBP2 need it.
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*/
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val = P1212_ALLOW_DEPENDENT_INFO_OFFSET_TYPE;
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val |= P1212_ALLOW_DEPENDENT_INFO_IMMED_TYPE;
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val |= P1212_ALLOW_VENDOR_DIRECTORY_TYPE;
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sc->sc_configrom =
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p1212_parse(sc->sc_sc1394.sc1394_configrom,
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sc->sc_sc1394.sc1394_configrom_len, val);
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if ((sc->sc_configrom == NULL) ||
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(sc->sc_configrom->len != IEEE1394_BUSINFO_LEN)) {
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#ifdef FWNODE_DEBUG
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DPRINTF(("Parse error with config rom\n"));
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fwnode_dump_rom(sc, sc->sc_sc1394.sc1394_configrom,
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sc->sc_sc1394.sc1394_configrom_len);
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#endif
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if (sc->sc_configrom)
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p1212_free(sc->sc_configrom);
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free(sc->sc_sc1394.sc1394_configrom, M_1394DATA);
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sc->sc_sc1394.sc1394_configrom = NULL;
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sc->sc_sc1394.sc1394_configrom_len = 0;
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return;
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}
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val = htonl(IEEE1394_SIGNATURE);
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if (memcmp(sc->sc_configrom->name, &val, 4)) {
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DPRINTF(("Invalid signature found in bus info block: "
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"%s\n", sc->sc_configrom->name));
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p1212_free(sc->sc_configrom);
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sc->sc_sc1394.sc1394_configrom = NULL;
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sc->sc_sc1394.sc1394_configrom_len = 0;
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return;
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}
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sc->sc_sc1394.sc1394_max_receive =
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IEEE1394_GET_MAX_REC(ntohl(sc->sc_configrom->data[0]));
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sc->sc_sc1394.sc1394_link_speed =
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IEEE1394_GET_LINK_SPD(ntohl(sc->sc_configrom->data[0]));
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printf("%s: Link Speed: %s, max_rec: %d bytes\n",
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sc->sc_sc1394.sc1394_dev.dv_xname,
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ieee1394_speeds[sc->sc_sc1394.sc1394_link_speed],
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IEEE1394_MAX_REC(sc->sc_sc1394.sc1394_max_receive));
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#ifdef FWNODE_DEBUG
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fwnode_dump_rom(sc, sc->sc_sc1394.sc1394_configrom,
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sc->sc_sc1394.sc1394_configrom_len);
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p1212_print(sc->sc_configrom->root);
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#endif
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sc->sc_children = p1212_match_units(&sc->sc_sc1394.sc1394_dev,
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sc->sc_configrom->root, fwnode_print);
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}
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}
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static int
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fwnode_print(void *aux, const char *pnp)
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{
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if (pnp)
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printf("Unknown device at %s", pnp);
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return UNCONF;
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}
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#ifdef FWNODE_DEBUG
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static void
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fwnode_dump_rom(struct fwnode_softc *sc, u_int32_t *t, u_int32_t len)
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{
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int i;
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printf("%s: Config rom dump:\n", sc->sc_sc1394.sc1394_dev.dv_xname);
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for (i = 0; i < len; i++) {
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if ((i % 4) == 0) {
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if (i)
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printf("\n");
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printf("%s: 0x%02hx: ",
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sc->sc_sc1394.sc1394_dev.dv_xname, (short)(4 * i));
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}
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printf("0x%08x ", ntohl(t[i]));
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}
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printf("\n");
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}
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#endif
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