bd7f0fa0bb
every architecture's busdma_machdep.c. It is done by unifying the bus_dmamap_load_buffer() routines so that they may be called from MI code. The MD busdma is then given a chance to do any final processing in the complete() callback. The cam changes unify the bus_dmamap_load* handling in cam drivers. The arm and mips implementations are updated to track virtual addresses for sync(). Previously this was done in a type specific way. Now it is done in a generic way by recording the list of virtuals in the map. Submitted by: jeff (sponsored by EMC/Isilon) Reviewed by: kan (previous version), scottl, mjacob (isp(4), no objections for target mode changes) Discussed with: ian (arm changes) Tested by: marius (sparc64), mips (jmallet), isci(4) on x86 (jharris), amd64 (Fabian Keil <freebsd-listen@fabiankeil.de>)
630 lines
17 KiB
C
630 lines
17 KiB
C
/*-
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2002 Eric Moore
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* Copyright (c) 2002 LSI Logic Corporation
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* All rights reserved.
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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. The party using or redistributing the source code and binary forms
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* agrees to the disclaimer below and the terms and conditions set forth
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* herein.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/stat.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/cam_debug.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_message.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <dev/amr/amrreg.h>
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#include <dev/amr/amrvar.h>
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static int amr_cam_probe(device_t dev);
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static int amr_cam_attach(device_t dev);
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static int amr_cam_detach(device_t dev);
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static void amr_cam_action(struct cam_sim *sim, union ccb *ccb);
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static void amr_cam_poll(struct cam_sim *sim);
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static void amr_cam_complete(struct amr_command *ac);
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static int amr_cam_command(struct amr_softc *sc, struct amr_command **acp);
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static devclass_t amr_pass_devclass;
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static device_method_t amr_pass_methods[] = {
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DEVMETHOD(device_probe, amr_cam_probe),
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DEVMETHOD(device_attach, amr_cam_attach),
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DEVMETHOD(device_detach, amr_cam_detach),
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{ 0, 0 }
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};
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static driver_t amr_pass_driver = {
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"amrp",
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amr_pass_methods,
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0
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};
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DRIVER_MODULE(amrp, amr, amr_pass_driver, amr_pass_devclass, 0, 0);
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MODULE_DEPEND(amrp, cam, 1, 1, 1);
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static MALLOC_DEFINE(M_AMRCAM, "amrcam", "AMR CAM memory");
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/***********************************************************************
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* Enqueue/dequeue functions
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*/
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static __inline void
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amr_enqueue_ccb(struct amr_softc *sc, union ccb *ccb)
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{
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TAILQ_INSERT_TAIL(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
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}
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static __inline void
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amr_requeue_ccb(struct amr_softc *sc, union ccb *ccb)
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{
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TAILQ_INSERT_HEAD(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
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}
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static __inline union ccb *
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amr_dequeue_ccb(struct amr_softc *sc)
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{
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union ccb *ccb;
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if ((ccb = (union ccb *)TAILQ_FIRST(&sc->amr_cam_ccbq)) != NULL)
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TAILQ_REMOVE(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
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return(ccb);
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}
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static int
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amr_cam_probe(device_t dev)
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{
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return (0);
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}
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/********************************************************************************
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* Attach our 'real' SCSI channels to CAM
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*/
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static int
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amr_cam_attach(device_t dev)
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{
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struct amr_softc *sc;
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struct cam_devq *devq;
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int chn, error;
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sc = device_get_softc(dev);
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/* initialise the ccb queue */
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TAILQ_INIT(&sc->amr_cam_ccbq);
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/*
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* Allocate a devq for all our channels combined. This should
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* allow for the maximum number of SCSI commands we will accept
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* at one time. Save the pointer in the softc so we can find it later
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* during detach.
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*/
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if ((devq = cam_simq_alloc(AMR_MAX_SCSI_CMDS)) == NULL)
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return(ENOMEM);
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sc->amr_cam_devq = devq;
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/*
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* Iterate over our channels, registering them with CAM
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*/
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for (chn = 0; chn < sc->amr_maxchan; chn++) {
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/* allocate a sim */
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if ((sc->amr_cam_sim[chn] = cam_sim_alloc(amr_cam_action,
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amr_cam_poll, "amr", sc, device_get_unit(sc->amr_dev),
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&sc->amr_list_lock, 1, AMR_MAX_SCSI_CMDS, devq)) == NULL) {
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cam_simq_free(devq);
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device_printf(sc->amr_dev, "CAM SIM attach failed\n");
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return(ENOMEM);
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}
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/* register the bus ID so we can get it later */
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mtx_lock(&sc->amr_list_lock);
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error = xpt_bus_register(sc->amr_cam_sim[chn], sc->amr_dev,chn);
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mtx_unlock(&sc->amr_list_lock);
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if (error) {
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device_printf(sc->amr_dev,
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"CAM XPT bus registration failed\n");
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return(ENXIO);
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}
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}
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/*
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* XXX we should scan the config and work out which devices are
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* actually protected.
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*/
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sc->amr_cam_command = amr_cam_command;
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return(0);
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}
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/********************************************************************************
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* Disconnect ourselves from CAM
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*/
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static int
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amr_cam_detach(device_t dev)
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{
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struct amr_softc *sc;
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int chn;
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sc = device_get_softc(dev);
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mtx_lock(&sc->amr_list_lock);
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for (chn = 0; chn < sc->amr_maxchan; chn++) {
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/*
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* If a sim was allocated for this channel, free it
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*/
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if (sc->amr_cam_sim[chn] != NULL) {
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xpt_bus_deregister(cam_sim_path(sc->amr_cam_sim[chn]));
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cam_sim_free(sc->amr_cam_sim[chn], FALSE);
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}
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}
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mtx_unlock(&sc->amr_list_lock);
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/* Now free the devq */
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if (sc->amr_cam_devq != NULL)
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cam_simq_free(sc->amr_cam_devq);
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return (0);
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}
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/***********************************************************************
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***********************************************************************
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CAM passthrough interface
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***********************************************************************
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***********************************************************************/
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/***********************************************************************
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* Handle a request for action from CAM
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*/
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static void
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amr_cam_action(struct cam_sim *sim, union ccb *ccb)
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{
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struct amr_softc *sc = cam_sim_softc(sim);
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switch(ccb->ccb_h.func_code) {
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/*
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* Perform SCSI I/O to a physical device.
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*/
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case XPT_SCSI_IO:
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{
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struct ccb_hdr *ccbh = &ccb->ccb_h;
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struct ccb_scsiio *csio = &ccb->csio;
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/* Validate the CCB */
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ccbh->status = CAM_REQ_INPROG;
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/* check the CDB length */
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if (csio->cdb_len > AMR_MAX_EXTCDB_LEN)
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ccbh->status = CAM_REQ_INVALID;
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if ((csio->cdb_len > AMR_MAX_CDB_LEN) &&
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(sc->support_ext_cdb == 0))
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ccbh->status = CAM_REQ_INVALID;
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/* check that the CDB pointer is not to a physical address */
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if ((ccbh->flags & CAM_CDB_POINTER) &&
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(ccbh->flags & CAM_CDB_PHYS))
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ccbh->status = CAM_REQ_INVALID;
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/*
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* if there is data transfer, it must be to/from a virtual
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* address
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*/
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if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
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if ((ccbh->flags & CAM_DATA_MASK) != CAM_DATA_VADDR)
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/* we can't map it */
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ccbh->status = CAM_REQ_INVALID;
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}
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/*
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* If the command is to a LUN other than 0, fail it.
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* This is probably incorrect, but during testing the
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* firmware did not seem to respect the LUN field, and thus
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* devices appear echoed.
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*/
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if (csio->ccb_h.target_lun != 0)
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ccbh->status = CAM_DEV_NOT_THERE;
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/* if we're happy with the request, queue it for attention */
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if (ccbh->status == CAM_REQ_INPROG) {
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/* save the channel number in the ccb */
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csio->ccb_h.sim_priv.entries[0].field= cam_sim_bus(sim);
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amr_enqueue_ccb(sc, ccb);
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amr_startio(sc);
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return;
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}
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break;
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}
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case XPT_CALC_GEOMETRY:
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{
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cam_calc_geometry(&ccb->ccg, /*extended*/1);
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break;
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}
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/*
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* Return path stats. Some of these should probably be amended.
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*/
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case XPT_PATH_INQ:
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{
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struct ccb_pathinq *cpi = & ccb->cpi;
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debug(3, "XPT_PATH_INQ");
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cpi->version_num = 1; /* XXX??? */
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cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
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cpi->target_sprt = 0;
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cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
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cpi->hba_eng_cnt = 0;
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cpi->max_target = AMR_MAX_TARGETS;
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cpi->max_lun = 0 /* AMR_MAX_LUNS*/;
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cpi->initiator_id = 7; /* XXX variable? */
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strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
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strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
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strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
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cpi->unit_number = cam_sim_unit(sim);
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cpi->bus_id = cam_sim_bus(sim);
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cpi->base_transfer_speed = 132 * 1024; /* XXX */
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cpi->transport = XPORT_SPI;
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cpi->transport_version = 2;
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cpi->protocol = PROTO_SCSI;
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cpi->protocol_version = SCSI_REV_2;
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cpi->ccb_h.status = CAM_REQ_CMP;
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break;
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}
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case XPT_RESET_BUS:
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{
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struct ccb_pathinq *cpi = & ccb->cpi;
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debug(1, "XPT_RESET_BUS");
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cpi->ccb_h.status = CAM_REQ_CMP;
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break;
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}
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case XPT_RESET_DEV:
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{
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debug(1, "XPT_RESET_DEV");
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ccb->ccb_h.status = CAM_REQ_CMP;
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break;
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}
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case XPT_GET_TRAN_SETTINGS:
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{
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struct ccb_trans_settings *cts = &(ccb->cts);
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debug(3, "XPT_GET_TRAN_SETTINGS");
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struct ccb_trans_settings_scsi *scsi;
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struct ccb_trans_settings_spi *spi;
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scsi = &cts->proto_specific.scsi;
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spi = &cts->xport_specific.spi;
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cts->protocol = PROTO_SCSI;
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cts->protocol_version = SCSI_REV_2;
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cts->transport = XPORT_SPI;
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cts->transport_version = 2;
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if (cts->type == CTS_TYPE_USER_SETTINGS) {
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ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
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break;
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}
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spi->flags = CTS_SPI_FLAGS_DISC_ENB;
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spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
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spi->sync_period = 6; /* 40MHz how wide is this bus? */
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spi->sync_offset = 31; /* How to extract this from board? */
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spi->valid = CTS_SPI_VALID_SYNC_RATE
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| CTS_SPI_VALID_SYNC_OFFSET
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| CTS_SPI_VALID_BUS_WIDTH
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| CTS_SPI_VALID_DISC;
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scsi->valid = CTS_SCSI_VALID_TQ;
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ccb->ccb_h.status = CAM_REQ_CMP;
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break;
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}
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case XPT_SET_TRAN_SETTINGS:
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debug(3, "XPT_SET_TRAN_SETTINGS");
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ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
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break;
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/*
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* Reject anything else as unsupported.
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*/
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default:
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/* we can't do this */
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ccb->ccb_h.status = CAM_REQ_INVALID;
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break;
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}
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mtx_assert(&sc->amr_list_lock, MA_OWNED);
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xpt_done(ccb);
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}
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/***********************************************************************
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* Convert a CAM CCB off the top of the CCB queue to a passthrough SCSI
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* command.
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*/
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static int
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amr_cam_command(struct amr_softc *sc, struct amr_command **acp)
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{
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struct amr_command *ac;
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struct amr_passthrough *ap;
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struct amr_ext_passthrough *aep;
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struct ccb_scsiio *csio;
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int bus, target, error;
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error = 0;
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ac = NULL;
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ap = NULL;
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aep = NULL;
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/* check to see if there is a ccb for us to work with */
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if ((csio = (struct ccb_scsiio *)amr_dequeue_ccb(sc)) == NULL)
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goto out;
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/* get bus/target, XXX validate against protected devices? */
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bus = csio->ccb_h.sim_priv.entries[0].field;
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target = csio->ccb_h.target_id;
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/*
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* Build a passthrough command.
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*/
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/* construct command */
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if ((ac = amr_alloccmd(sc)) == NULL) {
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error = ENOMEM;
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goto out;
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}
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/* construct passthrough */
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if (sc->support_ext_cdb ) {
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aep = &ac->ac_ccb->ccb_epthru;
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aep->ap_timeout = 2;
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aep->ap_ars = 1;
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aep->ap_request_sense_length = 14;
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aep->ap_islogical = 0;
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aep->ap_channel = bus;
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aep->ap_scsi_id = target;
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aep->ap_logical_drive_no = csio->ccb_h.target_lun;
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aep->ap_cdb_length = csio->cdb_len;
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aep->ap_data_transfer_length = csio->dxfer_len;
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if (csio->ccb_h.flags & CAM_CDB_POINTER) {
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bcopy(csio->cdb_io.cdb_ptr, aep->ap_cdb, csio->cdb_len);
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} else {
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bcopy(csio->cdb_io.cdb_bytes, aep->ap_cdb,
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csio->cdb_len);
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}
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/*
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* we leave the data s/g list and s/g count to the map routine
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* later
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*/
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debug(2, " COMMAND %x/%d+%d to %d:%d:%d", aep->ap_cdb[0],
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aep->ap_cdb_length, csio->dxfer_len, aep->ap_channel,
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aep->ap_scsi_id, aep->ap_logical_drive_no);
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} else {
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|
ap = &ac->ac_ccb->ccb_pthru;
|
|
ap->ap_timeout = 0;
|
|
ap->ap_ars = 1;
|
|
ap->ap_request_sense_length = 14;
|
|
ap->ap_islogical = 0;
|
|
ap->ap_channel = bus;
|
|
ap->ap_scsi_id = target;
|
|
ap->ap_logical_drive_no = csio->ccb_h.target_lun;
|
|
ap->ap_cdb_length = csio->cdb_len;
|
|
ap->ap_data_transfer_length = csio->dxfer_len;
|
|
if (csio->ccb_h.flags & CAM_CDB_POINTER) {
|
|
bcopy(csio->cdb_io.cdb_ptr, ap->ap_cdb, csio->cdb_len);
|
|
} else {
|
|
bcopy(csio->cdb_io.cdb_bytes, ap->ap_cdb,
|
|
csio->cdb_len);
|
|
}
|
|
/*
|
|
* we leave the data s/g list and s/g count to the map routine
|
|
* later
|
|
*/
|
|
|
|
debug(2, " COMMAND %x/%d+%d to %d:%d:%d", ap->ap_cdb[0],
|
|
ap->ap_cdb_length, csio->dxfer_len, ap->ap_channel,
|
|
ap->ap_scsi_id, ap->ap_logical_drive_no);
|
|
}
|
|
|
|
ac->ac_flags |= AMR_CMD_CCB;
|
|
|
|
ac->ac_data = csio->data_ptr;
|
|
ac->ac_length = csio->dxfer_len;
|
|
if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
|
|
ac->ac_flags |= AMR_CMD_DATAIN;
|
|
if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
|
|
ac->ac_flags |= AMR_CMD_DATAOUT;
|
|
|
|
ac->ac_private = csio;
|
|
ac->ac_complete = amr_cam_complete;
|
|
if ( sc->support_ext_cdb ) {
|
|
ac->ac_mailbox.mb_command = AMR_CMD_EXTPASS;
|
|
} else {
|
|
ac->ac_mailbox.mb_command = AMR_CMD_PASS;
|
|
}
|
|
|
|
out:
|
|
if (error != 0) {
|
|
if (ac != NULL)
|
|
amr_releasecmd(ac);
|
|
if (csio != NULL)
|
|
/* put it back and try again later */
|
|
amr_requeue_ccb(sc, (union ccb *)csio);
|
|
}
|
|
*acp = ac;
|
|
return(error);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* Check for interrupt status
|
|
*/
|
|
static void
|
|
amr_cam_poll(struct cam_sim *sim)
|
|
{
|
|
|
|
amr_done(cam_sim_softc(sim));
|
|
}
|
|
|
|
/**********************************************************************
|
|
* Handle completion of a command submitted via CAM.
|
|
*/
|
|
static void
|
|
amr_cam_complete(struct amr_command *ac)
|
|
{
|
|
struct amr_passthrough *ap;
|
|
struct amr_ext_passthrough *aep;
|
|
struct ccb_scsiio *csio;
|
|
struct scsi_inquiry_data *inq;
|
|
int scsi_status, cdb0;
|
|
|
|
ap = &ac->ac_ccb->ccb_pthru;
|
|
aep = &ac->ac_ccb->ccb_epthru;
|
|
csio = (struct ccb_scsiio *)ac->ac_private;
|
|
inq = (struct scsi_inquiry_data *)csio->data_ptr;
|
|
|
|
if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
|
|
scsi_status = aep->ap_scsi_status;
|
|
else
|
|
scsi_status = ap->ap_scsi_status;
|
|
debug(1, "status 0x%x AP scsi_status 0x%x", ac->ac_status,
|
|
scsi_status);
|
|
|
|
/* Make sure the status is sane */
|
|
if ((ac->ac_status != AMR_STATUS_SUCCESS) && (scsi_status == 0)) {
|
|
csio->ccb_h.status = CAM_REQ_CMP_ERR;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Hide disks from CAM so that they're not picked up and treated as
|
|
* 'normal' disks.
|
|
*
|
|
* If the configuration provides a mechanism to mark a disk a "not
|
|
* managed", we could add handling for that to allow disks to be
|
|
* selectively visible.
|
|
*/
|
|
|
|
/* handle passthrough SCSI status */
|
|
switch(scsi_status) {
|
|
case 0: /* completed OK */
|
|
if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
|
|
cdb0 = aep->ap_cdb[0];
|
|
else
|
|
cdb0 = ap->ap_cdb[0];
|
|
if ((cdb0 == INQUIRY) && (SID_TYPE(inq) == T_DIRECT))
|
|
inq->device = (inq->device & 0xe0) | T_NODEVICE;
|
|
csio->ccb_h.status = CAM_REQ_CMP;
|
|
break;
|
|
|
|
case 0x02:
|
|
csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
|
|
csio->scsi_status = SCSI_STATUS_CHECK_COND;
|
|
if (ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS)
|
|
bcopy(aep->ap_request_sense_area, &csio->sense_data,
|
|
AMR_MAX_REQ_SENSE_LEN);
|
|
else
|
|
bcopy(ap->ap_request_sense_area, &csio->sense_data,
|
|
AMR_MAX_REQ_SENSE_LEN);
|
|
csio->sense_len = AMR_MAX_REQ_SENSE_LEN;
|
|
csio->ccb_h.status |= CAM_AUTOSNS_VALID;
|
|
break;
|
|
|
|
case 0x08:
|
|
csio->ccb_h.status = CAM_SCSI_BUSY;
|
|
break;
|
|
|
|
case 0xf0:
|
|
case 0xf4:
|
|
default:
|
|
/*
|
|
* Non-zero LUNs are already filtered, so there's no need
|
|
* to return CAM_DEV_NOT_THERE.
|
|
*/
|
|
csio->ccb_h.status = CAM_SEL_TIMEOUT;
|
|
break;
|
|
}
|
|
|
|
out:
|
|
if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
|
|
debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr,
|
|
" ");
|
|
|
|
mtx_lock(&ac->ac_sc->amr_list_lock);
|
|
xpt_done((union ccb *)csio);
|
|
amr_releasecmd(ac);
|
|
mtx_unlock(&ac->ac_sc->amr_list_lock);
|
|
}
|