amr.c revision 106225
151974Smsmith/*- 265245Smsmith * Copyright (c) 1999,2000 Michael Smith 365245Smsmith * Copyright (c) 2000 BSDi 451974Smsmith * All rights reserved. 551974Smsmith * 651974Smsmith * Redistribution and use in source and binary forms, with or without 751974Smsmith * modification, are permitted provided that the following conditions 851974Smsmith * are met: 951974Smsmith * 1. Redistributions of source code must retain the above copyright 1051974Smsmith * notice, this list of conditions and the following disclaimer. 1151974Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1251974Smsmith * notice, this list of conditions and the following disclaimer in the 1351974Smsmith * documentation and/or other materials provided with the distribution. 1451974Smsmith * 1551974Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1651974Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1751974Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1851974Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1951974Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2051974Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2151974Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2251974Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2351974Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2451974Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2551974Smsmith * SUCH DAMAGE. 2651974Smsmith * 27106225Semoore * Copyright (c) 2002 Eric Moore 28106225Semoore * Copyright (c) 2002 LSI Logic Corporation 29106225Semoore * All rights reserved. 30106225Semoore * 31106225Semoore * Redistribution and use in source and binary forms, with or without 32106225Semoore * modification, are permitted provided that the following conditions 33106225Semoore * are met: 34106225Semoore * 1. Redistributions of source code must retain the above copyright 35106225Semoore * notice, this list of conditions and the following disclaimer. 36106225Semoore * 2. Redistributions in binary form must reproduce the above copyright 37106225Semoore * notice, this list of conditions and the following disclaimer in the 38106225Semoore * documentation and/or other materials provided with the distribution. 39105419Semoore * 3. The party using or redistributing the source code and binary forms 40106225Semoore * agrees to the disclaimer below and the terms and conditions set forth 41105419Semoore * herein. 42105419Semoore * 43106225Semoore * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 44106225Semoore * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45106225Semoore * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46106225Semoore * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47106225Semoore * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48106225Semoore * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49106225Semoore * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50106225Semoore * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51106225Semoore * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52106225Semoore * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53106225Semoore * SUCH DAMAGE. 54105419Semoore * 55106225Semoore * 5651974Smsmith * $FreeBSD: head/sys/dev/amr/amr.c 106225 2002-10-30 22:00:11Z emoore $ 5751974Smsmith */ 5851974Smsmith 5951974Smsmith/* 6065245Smsmith * Driver for the AMI MegaRaid family of controllers. 6151974Smsmith */ 6251974Smsmith 6351974Smsmith#include <sys/param.h> 6451974Smsmith#include <sys/systm.h> 6551974Smsmith#include <sys/malloc.h> 6651974Smsmith#include <sys/kernel.h> 6751974Smsmith 6865245Smsmith#include <dev/amr/amr_compat.h> 6951974Smsmith#include <sys/bus.h> 7051974Smsmith#include <sys/conf.h> 7151974Smsmith#include <sys/devicestat.h> 7251974Smsmith#include <sys/disk.h> 7365245Smsmith#include <sys/stat.h> 7451974Smsmith 7565245Smsmith#include <machine/bus_memio.h> 7665245Smsmith#include <machine/bus_pio.h> 7765245Smsmith#include <machine/bus.h> 7851974Smsmith#include <machine/resource.h> 7951974Smsmith#include <sys/rman.h> 8051974Smsmith 8165245Smsmith#include <pci/pcireg.h> 8265245Smsmith#include <pci/pcivar.h> 8365245Smsmith 8451974Smsmith#include <dev/amr/amrio.h> 8551974Smsmith#include <dev/amr/amrreg.h> 8651974Smsmith#include <dev/amr/amrvar.h> 8765245Smsmith#define AMR_DEFINE_TABLES 8865245Smsmith#include <dev/amr/amr_tables.h> 8951974Smsmith 9051974Smsmith#define AMR_CDEV_MAJOR 132 9151974Smsmith 9265245Smsmithstatic d_open_t amr_open; 9365245Smsmithstatic d_close_t amr_close; 9465245Smsmithstatic d_ioctl_t amr_ioctl; 9565245Smsmith 9651974Smsmithstatic struct cdevsw amr_cdevsw = { 9751974Smsmith /* open */ amr_open, 9851974Smsmith /* close */ amr_close, 9951974Smsmith /* read */ noread, 10051974Smsmith /* write */ nowrite, 10151974Smsmith /* ioctl */ amr_ioctl, 10251974Smsmith /* poll */ nopoll, 10351974Smsmith /* mmap */ nommap, 10451974Smsmith /* strategy */ nostrategy, 10551974Smsmith /* name */ "amr", 10651974Smsmith /* maj */ AMR_CDEV_MAJOR, 10751974Smsmith /* dump */ nodump, 10851974Smsmith /* psize */ nopsize, 10951974Smsmith /* flags */ 0, 11051974Smsmith}; 11151974Smsmith 11265245Smsmith/* 11365245Smsmith * Initialisation, bus interface. 11465245Smsmith */ 11565245Smsmithstatic void amr_startup(void *arg); 11651974Smsmith 11751974Smsmith/* 11851974Smsmith * Command wrappers 11951974Smsmith */ 12065245Smsmithstatic int amr_query_controller(struct amr_softc *sc); 12165245Smsmithstatic void *amr_enquiry(struct amr_softc *sc, size_t bufsize, 12265245Smsmith u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual); 12365245Smsmithstatic void amr_completeio(struct amr_command *ac); 124106225Semoorestatic int amr_support_ext_cdb(struct amr_softc *sc); 12551974Smsmith 12651974Smsmith/* 12765245Smsmith * Command buffer allocation. 12851974Smsmith */ 12965245Smsmithstatic void amr_alloccmd_cluster(struct amr_softc *sc); 13065245Smsmithstatic void amr_freecmd_cluster(struct amr_command_cluster *acc); 13151974Smsmith 13251974Smsmith/* 13365245Smsmith * Command processing. 13451974Smsmith */ 13565245Smsmithstatic int amr_bio_command(struct amr_softc *sc, struct amr_command **acp); 13665245Smsmithstatic int amr_wait_command(struct amr_command *ac); 13765245Smsmithstatic int amr_poll_command(struct amr_command *ac); 13865245Smsmithstatic int amr_getslot(struct amr_command *ac); 13965245Smsmithstatic void amr_mapcmd(struct amr_command *ac); 14065245Smsmithstatic void amr_unmapcmd(struct amr_command *ac); 14165245Smsmithstatic int amr_start(struct amr_command *ac); 14265245Smsmithstatic void amr_complete(void *context, int pending); 14351974Smsmith 14451974Smsmith/* 14558883Smsmith * Status monitoring 14658883Smsmith */ 14765245Smsmithstatic void amr_periodic(void *data); 14858883Smsmith 14958883Smsmith/* 15051974Smsmith * Interface-specific shims 15151974Smsmith */ 15265245Smsmithstatic int amr_quartz_submit_command(struct amr_softc *sc); 15365245Smsmithstatic int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 15451974Smsmith 15565245Smsmithstatic int amr_std_submit_command(struct amr_softc *sc); 15665245Smsmithstatic int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 15765245Smsmithstatic void amr_std_attach_mailbox(struct amr_softc *sc); 15851974Smsmith 15965245Smsmith#ifdef AMR_BOARD_INIT 16065245Smsmithstatic int amr_quartz_init(struct amr_softc *sc); 16165245Smsmithstatic int amr_std_init(struct amr_softc *sc); 16265245Smsmith#endif 16365245Smsmith 16451974Smsmith/* 16551974Smsmith * Debugging 16651974Smsmith */ 16765245Smsmithstatic void amr_describe_controller(struct amr_softc *sc); 16865245Smsmith#ifdef AMR_DEBUG 16965245Smsmithstatic void amr_printcommand(struct amr_command *ac); 17065245Smsmith#endif 17151974Smsmith 17251974Smsmith/******************************************************************************** 17351974Smsmith ******************************************************************************** 17465245Smsmith Inline Glue 17551974Smsmith ******************************************************************************** 17651974Smsmith ********************************************************************************/ 17751974Smsmith 17851974Smsmith/******************************************************************************** 17965245Smsmith ******************************************************************************** 18065245Smsmith Public Interfaces 18165245Smsmith ******************************************************************************** 18265245Smsmith ********************************************************************************/ 18351974Smsmith 18451974Smsmith/******************************************************************************** 18551974Smsmith * Initialise the controller and softc. 18651974Smsmith */ 18751974Smsmithint 18851974Smsmithamr_attach(struct amr_softc *sc) 18951974Smsmith{ 19051974Smsmith 19165245Smsmith debug_called(1); 19265245Smsmith 19351974Smsmith /* 19451974Smsmith * Initialise per-controller queues. 19551974Smsmith */ 19665245Smsmith TAILQ_INIT(&sc->amr_completed); 19751974Smsmith TAILQ_INIT(&sc->amr_freecmds); 19865245Smsmith TAILQ_INIT(&sc->amr_cmd_clusters); 19965245Smsmith TAILQ_INIT(&sc->amr_ready); 20059249Sphk bioq_init(&sc->amr_bioq); 20151974Smsmith 20265245Smsmith#if __FreeBSD_version >= 500005 20351974Smsmith /* 20465245Smsmith * Initialise command-completion task. 20565245Smsmith */ 20665245Smsmith TASK_INIT(&sc->amr_task_complete, 0, amr_complete, sc); 20765245Smsmith#endif 20865245Smsmith 20965245Smsmith debug(2, "queue init done"); 21065245Smsmith 21165245Smsmith /* 21251974Smsmith * Configure for this controller type. 21351974Smsmith */ 21465245Smsmith if (AMR_IS_QUARTZ(sc)) { 21551974Smsmith sc->amr_submit_command = amr_quartz_submit_command; 21651974Smsmith sc->amr_get_work = amr_quartz_get_work; 21751974Smsmith } else { 21851974Smsmith sc->amr_submit_command = amr_std_submit_command; 21951974Smsmith sc->amr_get_work = amr_std_get_work; 22065245Smsmith amr_std_attach_mailbox(sc);; 22151974Smsmith } 22251974Smsmith 22365245Smsmith#ifdef AMR_BOARD_INIT 22465245Smsmith if ((AMR_IS_QUARTZ(sc) ? amr_quartz_init(sc) : amr_std_init(sc)))) 22565245Smsmith return(ENXIO); 22665245Smsmith#endif 22751974Smsmith 22851974Smsmith /* 22965245Smsmith * Quiz controller for features and limits. 23051974Smsmith */ 23165245Smsmith if (amr_query_controller(sc)) 23265245Smsmith return(ENXIO); 23351974Smsmith 23465245Smsmith debug(2, "controller query complete"); 23551974Smsmith 23651974Smsmith /* 23765245Smsmith * Attach our 'real' SCSI channels to CAM. 23851974Smsmith */ 23965245Smsmith if (amr_cam_attach(sc)) 24051974Smsmith return(ENXIO); 24165245Smsmith debug(2, "CAM attach done"); 24251974Smsmith 24351974Smsmith /* 24465245Smsmith * Create the control device. 24551974Smsmith */ 24665245Smsmith sc->amr_dev_t = make_dev(&amr_cdevsw, device_get_unit(sc->amr_dev), UID_ROOT, GID_OPERATOR, 24765245Smsmith S_IRUSR | S_IWUSR, "amr%d", device_get_unit(sc->amr_dev)); 24865245Smsmith sc->amr_dev_t->si_drv1 = sc; 24951974Smsmith 25051974Smsmith /* 25165245Smsmith * Schedule ourselves to bring the controller up once interrupts are 25265245Smsmith * available. 25351974Smsmith */ 25465245Smsmith bzero(&sc->amr_ich, sizeof(struct intr_config_hook)); 25565245Smsmith sc->amr_ich.ich_func = amr_startup; 25665245Smsmith sc->amr_ich.ich_arg = sc; 25765245Smsmith if (config_intrhook_establish(&sc->amr_ich) != 0) { 25865245Smsmith device_printf(sc->amr_dev, "can't establish configuration hook\n"); 25965245Smsmith return(ENOMEM); 26065245Smsmith } 26151974Smsmith 26258883Smsmith /* 26365245Smsmith * Print a little information about the controller. 26458883Smsmith */ 26565245Smsmith amr_describe_controller(sc); 26658883Smsmith 26765245Smsmith debug(2, "attach complete"); 26851974Smsmith return(0); 26951974Smsmith} 27051974Smsmith 27151974Smsmith/******************************************************************************** 27251974Smsmith * Locate disk resources and attach children to them. 27351974Smsmith */ 27465245Smsmithstatic void 27565245Smsmithamr_startup(void *arg) 27651974Smsmith{ 27765245Smsmith struct amr_softc *sc = (struct amr_softc *)arg; 27851974Smsmith struct amr_logdrive *dr; 27951974Smsmith int i, error; 28051974Smsmith 28165245Smsmith debug_called(1); 28251974Smsmith 28365245Smsmith /* pull ourselves off the intrhook chain */ 28465245Smsmith config_intrhook_disestablish(&sc->amr_ich); 28565245Smsmith 28651974Smsmith /* get up-to-date drive information */ 28751974Smsmith if (amr_query_controller(sc)) { 28865245Smsmith device_printf(sc->amr_dev, "can't scan controller for drives\n"); 28951974Smsmith return; 29051974Smsmith } 29151974Smsmith 29251974Smsmith /* iterate over available drives */ 29351974Smsmith for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 29451974Smsmith /* are we already attached to this drive? */ 29551974Smsmith if (dr->al_disk == 0) { 29651974Smsmith /* generate geometry information */ 29751974Smsmith if (dr->al_size > 0x200000) { /* extended translation? */ 29851974Smsmith dr->al_heads = 255; 29951974Smsmith dr->al_sectors = 63; 30051974Smsmith } else { 30151974Smsmith dr->al_heads = 64; 30251974Smsmith dr->al_sectors = 32; 30351974Smsmith } 30451974Smsmith dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 30551974Smsmith 30654073Smdodd dr->al_disk = device_add_child(sc->amr_dev, NULL, -1); 30751974Smsmith if (dr->al_disk == 0) 30851974Smsmith device_printf(sc->amr_dev, "device_add_child failed\n"); 30954073Smdodd device_set_ivars(dr->al_disk, dr); 31051974Smsmith } 31151974Smsmith } 31251974Smsmith 31351974Smsmith if ((error = bus_generic_attach(sc->amr_dev)) != 0) 31451974Smsmith device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 31551974Smsmith 31651974Smsmith /* mark controller back up */ 31751974Smsmith sc->amr_state &= ~AMR_STATE_SHUTDOWN; 31851974Smsmith 31951974Smsmith /* interrupts will be enabled before we do anything more */ 32051974Smsmith sc->amr_state |= AMR_STATE_INTEN; 32151974Smsmith 32251974Smsmith /* 32365245Smsmith * Start the timeout routine. 32451974Smsmith */ 32565245Smsmith/* sc->amr_timeout = timeout(amr_periodic, sc, hz);*/ 32651974Smsmith 32765245Smsmith return; 32851974Smsmith} 32951974Smsmith 33065245Smsmith/******************************************************************************* 33165245Smsmith * Free resources associated with a controller instance 33251974Smsmith */ 33365245Smsmithvoid 33465245Smsmithamr_free(struct amr_softc *sc) 33551974Smsmith{ 33665245Smsmith struct amr_command_cluster *acc; 33751974Smsmith 33865245Smsmith /* detach from CAM */ 33965245Smsmith amr_cam_detach(sc); 34051974Smsmith 34165245Smsmith /* cancel status timeout */ 34265245Smsmith untimeout(amr_periodic, sc, sc->amr_timeout); 34351974Smsmith 34465245Smsmith /* throw away any command buffers */ 34565245Smsmith while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) { 34665245Smsmith TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link); 34765245Smsmith amr_freecmd_cluster(acc); 34851974Smsmith } 34951974Smsmith} 35051974Smsmith 35151974Smsmith/******************************************************************************* 35265245Smsmith * Receive a bio structure from a child device and queue it on a particular 35351974Smsmith * disk resource, then poke the disk resource to start as much work as it can. 35451974Smsmith */ 35551974Smsmithint 35665245Smsmithamr_submit_bio(struct amr_softc *sc, struct bio *bio) 35751974Smsmith{ 35865245Smsmith debug_called(2); 35952543Smsmith 36065245Smsmith amr_enqueue_bio(sc, bio); 36151974Smsmith amr_startio(sc); 36251974Smsmith return(0); 36351974Smsmith} 36451974Smsmith 36551974Smsmith/******************************************************************************** 36651974Smsmith * Accept an open operation on the control device. 36751974Smsmith */ 368104094Sphkstatic int 369105419Semooreamr_open(dev_t dev, int flags, int fmt, d_thread_t *td) 37051974Smsmith{ 37151974Smsmith int unit = minor(dev); 37289055Smsmith struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 37351974Smsmith 37465245Smsmith debug_called(1); 37565245Smsmith 37651974Smsmith sc->amr_state |= AMR_STATE_OPEN; 37751974Smsmith return(0); 37851974Smsmith} 37951974Smsmith 38051974Smsmith/******************************************************************************** 38151974Smsmith * Accept the last close on the control device. 38251974Smsmith */ 383104094Sphkstatic int 384105419Semooreamr_close(dev_t dev, int flags, int fmt, d_thread_t *td) 38551974Smsmith{ 38651974Smsmith int unit = minor(dev); 38789055Smsmith struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 38851974Smsmith 38965245Smsmith debug_called(1); 39065245Smsmith 39151974Smsmith sc->amr_state &= ~AMR_STATE_OPEN; 39251974Smsmith return (0); 39351974Smsmith} 39451974Smsmith 39551974Smsmith/******************************************************************************** 39651974Smsmith * Handle controller-specific control operations. 39751974Smsmith */ 398104094Sphkstatic int 399105419Semooreamr_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td) 40051974Smsmith{ 40165245Smsmith struct amr_softc *sc = (struct amr_softc *)dev->si_drv1; 40265245Smsmith int *arg = (int *)addr; 40365245Smsmith struct amr_user_ioctl *au = (struct amr_user_ioctl *)addr; 40465245Smsmith struct amr_command *ac; 40565245Smsmith struct amr_mailbox_ioctl *mbi; 40665245Smsmith struct amr_passthrough *ap; 40765245Smsmith void *dp; 40865245Smsmith int error; 40965245Smsmith 41065245Smsmith debug_called(1); 41165245Smsmith 41265245Smsmith error = 0; 41365245Smsmith dp = NULL; 41465245Smsmith ap = NULL; 41565245Smsmith ac = NULL; 41651974Smsmith switch(cmd) { 41765245Smsmith 41865245Smsmith case AMR_IO_VERSION: 41965245Smsmith debug(1, "AMR_IO_VERSION"); 42065245Smsmith *arg = AMR_IO_VERSION_NUMBER; 42165245Smsmith break; 42265245Smsmith 42365245Smsmith case AMR_IO_COMMAND: 42469319Smsmith debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]); 42565245Smsmith /* handle inbound data buffer */ 42665245Smsmith if (au->au_length != 0) { 42765245Smsmith if ((dp = malloc(au->au_length, M_DEVBUF, M_WAITOK)) == NULL) { 42865245Smsmith error = ENOMEM; 42965245Smsmith break; 43065245Smsmith } 43165245Smsmith if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0) 43265245Smsmith break; 43369319Smsmith debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp); 43465245Smsmith } 43565245Smsmith 43665245Smsmith if ((ac = amr_alloccmd(sc)) == NULL) { 43765245Smsmith error = ENOMEM; 43865245Smsmith break; 43965245Smsmith } 44065245Smsmith 44165245Smsmith /* handle SCSI passthrough command */ 44265245Smsmith if (au->au_cmd[0] == AMR_CMD_PASS) { 44368877Sdwmalone if ((ap = malloc(sizeof(*ap), M_DEVBUF, M_WAITOK | M_ZERO)) == NULL) { 44465245Smsmith error = ENOMEM; 44565245Smsmith break; 44665245Smsmith } 44765245Smsmith 44865245Smsmith /* copy cdb */ 44965245Smsmith ap->ap_cdb_length = au->au_cmd[2]; 45065245Smsmith bcopy(&au->au_cmd[3], &ap->ap_cdb[0], ap->ap_cdb_length); 45165245Smsmith 45265245Smsmith /* build passthrough */ 45365245Smsmith ap->ap_timeout = au->au_cmd[ap->ap_cdb_length + 3] & 0x07; 45465245Smsmith ap->ap_ars = (au->au_cmd[ap->ap_cdb_length + 3] & 0x08) ? 1 : 0; 45565245Smsmith ap->ap_islogical = (au->au_cmd[ap->ap_cdb_length + 3] & 0x80) ? 1 : 0; 45665245Smsmith ap->ap_logical_drive_no = au->au_cmd[ap->ap_cdb_length + 4]; 45765245Smsmith ap->ap_channel = au->au_cmd[ap->ap_cdb_length + 5]; 45865245Smsmith ap->ap_scsi_id = au->au_cmd[ap->ap_cdb_length + 6]; 45965245Smsmith ap->ap_request_sense_length = 14; 460105419Semoore ap->ap_data_transfer_length = au->au_length; 46165245Smsmith /* XXX what about the request-sense area? does the caller want it? */ 46265245Smsmith 46365245Smsmith /* build command */ 46465245Smsmith ac->ac_data = ap; 46565245Smsmith ac->ac_length = sizeof(*ap); 46665245Smsmith ac->ac_flags |= AMR_CMD_DATAOUT; 46765245Smsmith ac->ac_ccb_data = dp; 46865245Smsmith ac->ac_ccb_length = au->au_length; 46965245Smsmith if (au->au_direction & AMR_IO_READ) 47065245Smsmith ac->ac_flags |= AMR_CMD_CCB_DATAIN; 47165245Smsmith if (au->au_direction & AMR_IO_WRITE) 47265245Smsmith ac->ac_flags |= AMR_CMD_CCB_DATAOUT; 47365245Smsmith 47465245Smsmith ac->ac_mailbox.mb_command = AMR_CMD_PASS; 47565245Smsmith 47665245Smsmith } else { 47765245Smsmith /* direct command to controller */ 47865245Smsmith mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox; 47965245Smsmith 48065245Smsmith /* copy pertinent mailbox items */ 48165245Smsmith mbi->mb_command = au->au_cmd[0]; 48265245Smsmith mbi->mb_channel = au->au_cmd[1]; 48365245Smsmith mbi->mb_param = au->au_cmd[2]; 48465245Smsmith mbi->mb_pad[0] = au->au_cmd[3]; 48565245Smsmith mbi->mb_drive = au->au_cmd[4]; 48665245Smsmith 48765245Smsmith /* build the command */ 48865245Smsmith ac->ac_data = dp; 48965245Smsmith ac->ac_length = au->au_length; 49065245Smsmith if (au->au_direction & AMR_IO_READ) 49165245Smsmith ac->ac_flags |= AMR_CMD_DATAIN; 49265245Smsmith if (au->au_direction & AMR_IO_WRITE) 49365245Smsmith ac->ac_flags |= AMR_CMD_DATAOUT; 49465245Smsmith } 49565245Smsmith 49665245Smsmith /* run the command */ 49765245Smsmith if ((error = amr_wait_command(ac)) != 0) 49865245Smsmith break; 49965245Smsmith 50065245Smsmith /* copy out data and set status */ 50165245Smsmith if (au->au_length != 0) 50265245Smsmith error = copyout(dp, au->au_buffer, au->au_length); 50369319Smsmith debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer); 50469319Smsmith if (dp != NULL) 50569319Smsmith debug(2, "%16D", dp, " "); 50665245Smsmith au->au_status = ac->ac_status; 50765245Smsmith break; 508105419Semoore 50965245Smsmith default: 51065245Smsmith debug(1, "unknown ioctl 0x%lx", cmd); 51165245Smsmith error = ENOIOCTL; 51265245Smsmith break; 51351974Smsmith } 51451974Smsmith 51565245Smsmith if (dp != NULL) 51665245Smsmith free(dp, M_DEVBUF); 51765245Smsmith if (ap != NULL) 51865245Smsmith free(ap, M_DEVBUF); 51965245Smsmith if (ac != NULL) 52065245Smsmith amr_releasecmd(ac); 52165245Smsmith return(error); 52251974Smsmith} 52351974Smsmith 52451974Smsmith/******************************************************************************** 52551974Smsmith ******************************************************************************** 52658883Smsmith Status Monitoring 52758883Smsmith ******************************************************************************** 52858883Smsmith ********************************************************************************/ 52958883Smsmith 53058883Smsmith/******************************************************************************** 53158883Smsmith * Perform a periodic check of the controller status 53258883Smsmith */ 53358883Smsmithstatic void 53458883Smsmithamr_periodic(void *data) 53558883Smsmith{ 53658883Smsmith struct amr_softc *sc = (struct amr_softc *)data; 53758883Smsmith 53865245Smsmith debug_called(2); 53958883Smsmith 54065245Smsmith /* XXX perform periodic status checks here */ 54158883Smsmith 54265245Smsmith /* compensate for missed interrupts */ 54365245Smsmith amr_done(sc); 54465245Smsmith 54558883Smsmith /* reschedule */ 54658883Smsmith sc->amr_timeout = timeout(amr_periodic, sc, hz); 54758883Smsmith} 54858883Smsmith 54958883Smsmith/******************************************************************************** 55058883Smsmith ******************************************************************************** 55151974Smsmith Command Wrappers 55251974Smsmith ******************************************************************************** 55351974Smsmith ********************************************************************************/ 55451974Smsmith 55551974Smsmith/******************************************************************************** 55651974Smsmith * Interrogate the controller for the operational parameters we require. 55751974Smsmith */ 55851974Smsmithstatic int 55951974Smsmithamr_query_controller(struct amr_softc *sc) 56051974Smsmith{ 56165245Smsmith struct amr_enquiry3 *aex; 56265245Smsmith struct amr_prodinfo *ap; 56365245Smsmith struct amr_enquiry *ae; 56465245Smsmith int ldrv; 56551974Smsmith 56665245Smsmith /* 56765245Smsmith * If we haven't found the real limit yet, let us have a couple of commands in 56865245Smsmith * order to be able to probe. 56965245Smsmith */ 57065245Smsmith if (sc->amr_maxio == 0) 57165245Smsmith sc->amr_maxio = 2; 57251974Smsmith 573106225Semoore /* 574106225Semoore * Greater than 10 byte cdb support 575106225Semoore */ 576106225Semoore sc->support_ext_cdb = amr_support_ext_cdb(sc); 577106225Semoore 578106225Semoore if(sc->support_ext_cdb) { 579106225Semoore debug(2,"supports extended CDBs."); 580106225Semoore } 581106225Semoore 58265245Smsmith /* 58365245Smsmith * Try to issue an ENQUIRY3 command 58465245Smsmith */ 58565245Smsmith if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 58665245Smsmith AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 58751974Smsmith 58865245Smsmith /* 58965245Smsmith * Fetch current state of logical drives. 59065245Smsmith */ 59165245Smsmith for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 59265245Smsmith sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv]; 59365245Smsmith sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv]; 59465245Smsmith sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv]; 59565245Smsmith debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 59665245Smsmith sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 59751974Smsmith } 59865245Smsmith free(aex, M_DEVBUF); 59958883Smsmith 60065245Smsmith /* 60165245Smsmith * Get product info for channel count. 60258883Smsmith */ 60365245Smsmith if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 60465245Smsmith device_printf(sc->amr_dev, "can't obtain product data from controller\n"); 60565245Smsmith return(1); 60665245Smsmith } 60765245Smsmith sc->amr_maxdrives = 40; 60865245Smsmith sc->amr_maxchan = ap->ap_nschan; 60965245Smsmith sc->amr_maxio = ap->ap_maxio; 61065245Smsmith sc->amr_type |= AMR_TYPE_40LD; 61165245Smsmith free(ap, M_DEVBUF); 61258883Smsmith 61365245Smsmith } else { 61465245Smsmith 61565245Smsmith /* failed, try the 8LD ENQUIRY commands */ 61665245Smsmith if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) { 61765245Smsmith if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 61865245Smsmith device_printf(sc->amr_dev, "can't obtain configuration data from controller\n"); 61965245Smsmith return(1); 62065245Smsmith } 62165245Smsmith ae->ae_signature = 0; 62251974Smsmith } 62365245Smsmith 62458883Smsmith /* 62565245Smsmith * Fetch current state of logical drives. 62658883Smsmith */ 62765245Smsmith for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 62865245Smsmith sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv]; 62965245Smsmith sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv]; 63065245Smsmith sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv]; 63165245Smsmith debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 63265245Smsmith sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 63351974Smsmith } 63465245Smsmith 63565245Smsmith sc->amr_maxdrives = 8; 63665245Smsmith sc->amr_maxchan = ae->ae_adapter.aa_channels; 63765245Smsmith sc->amr_maxio = ae->ae_adapter.aa_maxio; 63865245Smsmith free(ae, M_DEVBUF); 63951974Smsmith } 64065245Smsmith 64165245Smsmith /* 64265245Smsmith * Mark remaining drives as unused. 64365245Smsmith */ 64465245Smsmith for (; ldrv < AMR_MAXLD; ldrv++) 64565245Smsmith sc->amr_drive[ldrv].al_size = 0xffffffff; 64665245Smsmith 64765245Smsmith /* 64865245Smsmith * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust 64965245Smsmith * the controller's reported value, and lockups have been seen when we do. 65065245Smsmith */ 65165245Smsmith sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD); 65265245Smsmith 65351974Smsmith return(0); 65451974Smsmith} 65551974Smsmith 65651974Smsmith/******************************************************************************** 65751974Smsmith * Run a generic enquiry-style command. 65851974Smsmith */ 65951974Smsmithstatic void * 66051974Smsmithamr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 66151974Smsmith{ 66251974Smsmith struct amr_command *ac; 66351974Smsmith void *result; 66451974Smsmith u_int8_t *mbox; 66551974Smsmith int error; 66651974Smsmith 66765245Smsmith debug_called(1); 66851974Smsmith 66951974Smsmith error = 1; 67051974Smsmith result = NULL; 67151974Smsmith 67251974Smsmith /* get ourselves a command buffer */ 67351974Smsmith if ((ac = amr_alloccmd(sc)) == NULL) 67451974Smsmith goto out; 67551974Smsmith /* allocate the response structure */ 67651974Smsmith if ((result = malloc(bufsize, M_DEVBUF, M_NOWAIT)) == NULL) 67751974Smsmith goto out; 67865245Smsmith /* set command flags */ 67951974Smsmith ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 68051974Smsmith 68165245Smsmith /* point the command at our data */ 68251974Smsmith ac->ac_data = result; 68351974Smsmith ac->ac_length = bufsize; 68451974Smsmith 68551974Smsmith /* build the command proper */ 68651974Smsmith mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 68751974Smsmith mbox[0] = cmd; 68851974Smsmith mbox[2] = cmdsub; 68951974Smsmith mbox[3] = cmdqual; 69051974Smsmith 69158883Smsmith /* can't assume that interrupts are going to work here, so play it safe */ 69258883Smsmith if (amr_poll_command(ac)) 69351974Smsmith goto out; 69451974Smsmith error = ac->ac_status; 69551974Smsmith 69651974Smsmith out: 69751974Smsmith if (ac != NULL) 69851974Smsmith amr_releasecmd(ac); 69951974Smsmith if ((error != 0) && (result != NULL)) { 70051974Smsmith free(result, M_DEVBUF); 70151974Smsmith result = NULL; 70251974Smsmith } 70351974Smsmith return(result); 70451974Smsmith} 70551974Smsmith 70651974Smsmith/******************************************************************************** 70751974Smsmith * Flush the controller's internal cache, return status. 70851974Smsmith */ 70965245Smsmithint 71051974Smsmithamr_flush(struct amr_softc *sc) 71151974Smsmith{ 71251974Smsmith struct amr_command *ac; 71351974Smsmith int error; 71451974Smsmith 71551974Smsmith /* get ourselves a command buffer */ 71651974Smsmith error = 1; 71751974Smsmith if ((ac = amr_alloccmd(sc)) == NULL) 71851974Smsmith goto out; 71965245Smsmith /* set command flags */ 72051974Smsmith ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 72151974Smsmith 72251974Smsmith /* build the command proper */ 72351974Smsmith ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 72451974Smsmith 72558883Smsmith /* we have to poll, as the system may be going down or otherwise damaged */ 72658883Smsmith if (amr_poll_command(ac)) 72751974Smsmith goto out; 72851974Smsmith error = ac->ac_status; 72951974Smsmith 73051974Smsmith out: 73151974Smsmith if (ac != NULL) 73251974Smsmith amr_releasecmd(ac); 73351974Smsmith return(error); 73451974Smsmith} 73551974Smsmith 73651974Smsmith/******************************************************************************** 737106225Semoore * Detect extented cdb >> greater than 10 byte cdb support 738106225Semoore * returns '1' means this support exist 739106225Semoore * returns '0' means this support doesn't exist 740106225Semoore */ 741106225Semoorestatic int 742106225Semooreamr_support_ext_cdb(struct amr_softc *sc) 743106225Semoore{ 744106225Semoore struct amr_command *ac; 745106225Semoore u_int8_t *mbox; 746106225Semoore int error; 747106225Semoore 748106225Semoore /* get ourselves a command buffer */ 749106225Semoore error = 0; 750106225Semoore if ((ac = amr_alloccmd(sc)) == NULL) 751106225Semoore goto out; 752106225Semoore /* set command flags */ 753106225Semoore ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 754106225Semoore 755106225Semoore /* build the command proper */ 756106225Semoore mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 757106225Semoore mbox[0] = 0xA4; 758106225Semoore mbox[2] = 0x16; 759106225Semoore 760106225Semoore 761106225Semoore /* we have to poll, as the system may be going down or otherwise damaged */ 762106225Semoore if (amr_poll_command(ac)) 763106225Semoore goto out; 764106225Semoore if( ac->ac_status == AMR_STATUS_SUCCESS ) { 765106225Semoore error = 1; 766106225Semoore } 767106225Semoore 768106225Semooreout: 769106225Semoore if (ac != NULL) 770106225Semoore amr_releasecmd(ac); 771106225Semoore return(error); 772106225Semoore} 773106225Semoore 774106225Semoore/******************************************************************************** 77565245Smsmith * Try to find I/O work for the controller from one or more of the work queues. 77651974Smsmith * 77765245Smsmith * We make the assumption that if the controller is not ready to take a command 77865245Smsmith * at some given time, it will generate an interrupt at some later time when 77965245Smsmith * it is. 78051974Smsmith */ 78165245Smsmithvoid 78251974Smsmithamr_startio(struct amr_softc *sc) 78351974Smsmith{ 78451974Smsmith struct amr_command *ac; 78551974Smsmith 78651974Smsmith /* spin until something prevents us from doing any work */ 78751974Smsmith for (;;) { 78851974Smsmith 78965245Smsmith /* try to get a ready command */ 79065245Smsmith ac = amr_dequeue_ready(sc); 79151974Smsmith 79265245Smsmith /* if that failed, build a command from a bio */ 79365245Smsmith if (ac == NULL) 79465245Smsmith (void)amr_bio_command(sc, &ac); 79551974Smsmith 79665245Smsmith /* if that failed, build a command from a ccb */ 79765245Smsmith if (ac == NULL) 79865245Smsmith (void)amr_cam_command(sc, &ac); 799105419Semoore 80065245Smsmith /* if we don't have anything to do, give up */ 80165245Smsmith if (ac == NULL) 80265245Smsmith break; 80351974Smsmith 80465245Smsmith /* try to give the command to the controller; if this fails save it for later and give up */ 80565245Smsmith if (amr_start(ac)) { 80665245Smsmith debug(2, "controller busy, command deferred"); 80765245Smsmith amr_requeue_ready(ac); /* XXX schedule retry very soon? */ 80865245Smsmith break; 80951974Smsmith } 81051974Smsmith } 81151974Smsmith} 81251974Smsmith 81351974Smsmith/******************************************************************************** 81451974Smsmith * Handle completion of an I/O command. 81551974Smsmith */ 81651974Smsmithstatic void 81751974Smsmithamr_completeio(struct amr_command *ac) 81851974Smsmith{ 81951974Smsmith struct amr_softc *sc = ac->ac_sc; 82051974Smsmith 82151974Smsmith if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 82265245Smsmith ac->ac_bio->bio_error = EIO; 82365245Smsmith ac->ac_bio->bio_flags |= BIO_ERROR; 82451974Smsmith 82565245Smsmith device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status); 82665245Smsmith/* amr_printcommand(ac);*/ 82751974Smsmith } 82865245Smsmith amrd_intr(ac->ac_bio); 82965245Smsmith amr_releasecmd(ac); 83051974Smsmith} 83151974Smsmith 83251974Smsmith/******************************************************************************** 83351974Smsmith ******************************************************************************** 83451974Smsmith Command Processing 83551974Smsmith ******************************************************************************** 83651974Smsmith ********************************************************************************/ 83751974Smsmith 83851974Smsmith/******************************************************************************** 83965245Smsmith * Convert a bio off the top of the bio queue into a command. 84065245Smsmith */ 84165245Smsmithstatic int 84265245Smsmithamr_bio_command(struct amr_softc *sc, struct amr_command **acp) 84365245Smsmith{ 84465245Smsmith struct amr_command *ac; 84565245Smsmith struct amrd_softc *amrd; 84665245Smsmith struct bio *bio; 84765245Smsmith int error; 84865245Smsmith int blkcount; 84965245Smsmith int driveno; 85065245Smsmith int cmd; 85165245Smsmith 85265245Smsmith ac = NULL; 85365245Smsmith error = 0; 85465245Smsmith 85565245Smsmith /* get a bio to work on */ 85665245Smsmith if ((bio = amr_dequeue_bio(sc)) == NULL) 85765245Smsmith goto out; 85865245Smsmith 85965245Smsmith /* get a command */ 86065245Smsmith if ((ac = amr_alloccmd(sc)) == NULL) { 86165245Smsmith error = ENOMEM; 86265245Smsmith goto out; 86365245Smsmith } 86465245Smsmith 86565245Smsmith /* connect the bio to the command */ 86665245Smsmith ac->ac_complete = amr_completeio; 86765245Smsmith ac->ac_bio = bio; 86865245Smsmith ac->ac_data = bio->bio_data; 86965245Smsmith ac->ac_length = bio->bio_bcount; 87065245Smsmith if (BIO_IS_READ(bio)) { 87165245Smsmith ac->ac_flags |= AMR_CMD_DATAIN; 87265245Smsmith cmd = AMR_CMD_LREAD; 87365245Smsmith } else { 87465245Smsmith ac->ac_flags |= AMR_CMD_DATAOUT; 87565245Smsmith cmd = AMR_CMD_LWRITE; 87665245Smsmith } 87765245Smsmith amrd = (struct amrd_softc *)bio->bio_dev->si_drv1; 87865245Smsmith driveno = amrd->amrd_drive - sc->amr_drive; 87965245Smsmith blkcount = (bio->bio_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE; 88065245Smsmith 88165245Smsmith ac->ac_mailbox.mb_command = cmd; 88265245Smsmith ac->ac_mailbox.mb_blkcount = blkcount; 88365245Smsmith ac->ac_mailbox.mb_lba = bio->bio_pblkno; 88465245Smsmith ac->ac_mailbox.mb_drive = driveno; 88565245Smsmith /* we fill in the s/g related data when the command is mapped */ 88665245Smsmith 88765245Smsmith if ((bio->bio_pblkno + blkcount) > sc->amr_drive[driveno].al_size) 88892610Sbde device_printf(sc->amr_dev, "I/O beyond end of unit (%lld,%d > %lu)\n", 88992610Sbde (long long)bio->bio_pblkno, blkcount, 89092610Sbde (u_long)sc->amr_drive[driveno].al_size); 89165245Smsmith 89265245Smsmithout: 89365245Smsmith if (error != 0) { 89465245Smsmith if (ac != NULL) 89565245Smsmith amr_releasecmd(ac); 89665245Smsmith if (bio != NULL) /* this breaks ordering... */ 89765245Smsmith amr_enqueue_bio(sc, bio); 89865245Smsmith } 89965245Smsmith *acp = ac; 90065245Smsmith return(error); 90165245Smsmith} 90265245Smsmith 90365245Smsmith/******************************************************************************** 90451974Smsmith * Take a command, submit it to the controller and sleep until it completes 90551974Smsmith * or fails. Interrupts must be enabled, returns nonzero on error. 90651974Smsmith */ 90751974Smsmithstatic int 90851974Smsmithamr_wait_command(struct amr_command *ac) 90951974Smsmith{ 91051974Smsmith int error, count; 91151974Smsmith 91265245Smsmith debug_called(1); 91351974Smsmith 91451974Smsmith ac->ac_complete = NULL; 91565245Smsmith ac->ac_flags |= AMR_CMD_SLEEP; 91651974Smsmith if ((error = amr_start(ac)) != 0) 91751974Smsmith return(error); 91851974Smsmith 91951974Smsmith count = 0; 92051974Smsmith /* XXX better timeout? */ 92165245Smsmith while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) { 92265245Smsmith tsleep(ac, PRIBIO | PCATCH, "amrwcmd", hz); 92351974Smsmith } 92451974Smsmith return(0); 92551974Smsmith} 92651974Smsmith 92751974Smsmith/******************************************************************************** 92851974Smsmith * Take a command, submit it to the controller and busy-wait for it to return. 92951974Smsmith * Returns nonzero on error. Can be safely called with interrupts enabled. 93051974Smsmith */ 93151974Smsmithstatic int 93251974Smsmithamr_poll_command(struct amr_command *ac) 93351974Smsmith{ 93451974Smsmith struct amr_softc *sc = ac->ac_sc; 93565245Smsmith int error, count; 93651974Smsmith 93765245Smsmith debug_called(2); 93851974Smsmith 93951974Smsmith ac->ac_complete = NULL; 94051974Smsmith if ((error = amr_start(ac)) != 0) 94151974Smsmith return(error); 94251974Smsmith 94351974Smsmith count = 0; 94451974Smsmith do { 94551974Smsmith /* 94651974Smsmith * Poll for completion, although the interrupt handler may beat us to it. 94751974Smsmith * Note that the timeout here is somewhat arbitrary. 94851974Smsmith */ 94951974Smsmith amr_done(sc); 95065245Smsmith DELAY(1000); 95165245Smsmith } while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000)); 95265245Smsmith if (!(ac->ac_flags & AMR_CMD_BUSY)) { 95351974Smsmith error = 0; 95451974Smsmith } else { 95565245Smsmith /* XXX the slot is now marked permanently busy */ 95651974Smsmith error = EIO; 95765245Smsmith device_printf(sc->amr_dev, "polled command timeout\n"); 95851974Smsmith } 95951974Smsmith return(error); 96051974Smsmith} 96151974Smsmith 96251974Smsmith/******************************************************************************** 96365245Smsmith * Get a free command slot for a command if it doesn't already have one. 96465245Smsmith * 96565245Smsmith * May be safely called multiple times for a given command. 96651974Smsmith */ 96751974Smsmithstatic int 96851974Smsmithamr_getslot(struct amr_command *ac) 96951974Smsmith{ 97051974Smsmith struct amr_softc *sc = ac->ac_sc; 97165245Smsmith int s, slot, limit, error; 97251974Smsmith 97365245Smsmith debug_called(3); 97465245Smsmith 97565245Smsmith /* if the command already has a slot, don't try to give it another one */ 97665245Smsmith if (ac->ac_slot != 0) 97765245Smsmith return(0); 97865245Smsmith 97951974Smsmith /* enforce slot usage limit */ 98051974Smsmith limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 98165245Smsmith if (sc->amr_busyslots > limit) 98251974Smsmith return(EBUSY); 98351974Smsmith 98451974Smsmith /* 98565245Smsmith * Allocate a slot. XXX linear scan is slow 98651974Smsmith */ 98765245Smsmith error = EBUSY; 98851974Smsmith s = splbio(); 98951974Smsmith for (slot = 0; slot < sc->amr_maxio; slot++) { 99065245Smsmith if (sc->amr_busycmd[slot] == NULL) { 99165245Smsmith sc->amr_busycmd[slot] = ac; 99265245Smsmith sc->amr_busyslots++; 99365245Smsmith ac->ac_slot = slot; 99465245Smsmith error = 0; 99551974Smsmith break; 99665245Smsmith } 99751974Smsmith } 99851974Smsmith splx(s); 99951974Smsmith 100065245Smsmith return(error); 100151974Smsmith} 100251974Smsmith 100351974Smsmith/******************************************************************************** 100465245Smsmith * Map/unmap (ac)'s data in the controller's addressable space as required. 100565245Smsmith * 100665245Smsmith * These functions may be safely called multiple times on a given command. 100751974Smsmith */ 100851974Smsmithstatic void 100951974Smsmithamr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 101051974Smsmith{ 101151974Smsmith struct amr_command *ac = (struct amr_command *)arg; 101251974Smsmith struct amr_softc *sc = ac->ac_sc; 101351974Smsmith struct amr_sgentry *sg; 101451974Smsmith int i; 101569319Smsmith u_int8_t *sgc; 101651974Smsmith 101765245Smsmith debug_called(3); 101851974Smsmith 101951974Smsmith /* get base address of s/g table */ 102051974Smsmith sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 102151974Smsmith 102265245Smsmith /* save data physical address */ 102351974Smsmith ac->ac_dataphys = segs[0].ds_addr; 102451974Smsmith 102569319Smsmith /* for AMR_CMD_CONFIG the s/g count goes elsewhere */ 102669319Smsmith if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) { 102769319Smsmith sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param); 102869319Smsmith } else { 102969319Smsmith sgc = &ac->ac_mailbox.mb_nsgelem; 103069319Smsmith } 103169319Smsmith 103265245Smsmith /* decide whether we need to populate the s/g table */ 103365245Smsmith if (nsegments < 2) { 103469319Smsmith *sgc = 0; 1035105419Semoore ac->ac_mailbox.mb_nsgelem = 0; 103665245Smsmith ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 103765245Smsmith } else { 1038105419Semoore ac->ac_mailbox.mb_nsgelem = nsegments; 103969319Smsmith *sgc = nsegments; 104065245Smsmith ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 104165245Smsmith for (i = 0; i < nsegments; i++, sg++) { 104265245Smsmith sg->sg_addr = segs[i].ds_addr; 104365245Smsmith sg->sg_count = segs[i].ds_len; 104465245Smsmith } 104565245Smsmith } 104665245Smsmith} 104765245Smsmith 104865245Smsmithstatic void 104965245Smsmithamr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 105065245Smsmith{ 1051105419Semoore struct amr_command *ac = (struct amr_command *)arg; 1052105419Semoore struct amr_softc *sc = ac->ac_sc; 1053105419Semoore struct amr_sgentry *sg; 1054105419Semoore struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; 1055106225Semoore struct amr_ext_passthrough *aep = (struct amr_passthrough *)ac->ac_data; 1056105419Semoore int i; 105765245Smsmith 105865245Smsmith /* get base address of s/g table */ 105965245Smsmith sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 106065245Smsmith 1061105419Semoore /* decide whether we need to populate the s/g table */ 1062106225Semoore if( ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS ) { 1063106225Semoore if (nsegments < 2) { 1064106225Semoore aep->ap_no_sg_elements = 0; 1065106225Semoore aep->ap_data_transfer_address = segs[0].ds_addr; 1066106225Semoore } else { 1067106225Semoore /* save s/g table information in passthrough */ 1068106225Semoore aep->ap_no_sg_elements = nsegments; 1069106225Semoore aep->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1070106225Semoore /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1071106225Semoore for (i = 0; i < nsegments; i++, sg++) { 1072106225Semoore sg->sg_addr = segs[i].ds_addr; 1073106225Semoore sg->sg_count = segs[i].ds_len; 1074106225Semoore debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1075106225Semoore } 1076106225Semoore } 1077106225Semoore debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1078106225Semoore aep->ap_no_sg_elements, aep->ap_data_transfer_address, ac->ac_dataphys); 1079105419Semoore } else { 1080106225Semoore if (nsegments < 2) { 1081106225Semoore ap->ap_no_sg_elements = 0; 1082106225Semoore ap->ap_data_transfer_address = segs[0].ds_addr; 1083106225Semoore } else { 1084106225Semoore /* save s/g table information in passthrough */ 1085106225Semoore ap->ap_no_sg_elements = nsegments; 1086106225Semoore ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1087106225Semoore /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1088106225Semoore for (i = 0; i < nsegments; i++, sg++) { 1089105419Semoore sg->sg_addr = segs[i].ds_addr; 1090105419Semoore sg->sg_count = segs[i].ds_len; 1091105419Semoore debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1092106225Semoore } 1093105419Semoore } 1094106225Semoore debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1095106225Semoore ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys); 1096105419Semoore } 109751974Smsmith} 109851974Smsmith 109951974Smsmithstatic void 110051974Smsmithamr_mapcmd(struct amr_command *ac) 110151974Smsmith{ 110251974Smsmith struct amr_softc *sc = ac->ac_sc; 110351974Smsmith 110469319Smsmith debug_called(3); 110551974Smsmith 110665245Smsmith /* if the command involves data at all, and hasn't been mapped */ 110765245Smsmith if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 110865245Smsmith 110965245Smsmith if (ac->ac_data != NULL) { 111065245Smsmith /* map the data buffers into bus space and build the s/g list */ 1111105419Semoore bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 111265245Smsmith amr_setup_dmamap, ac, 0); 111365245Smsmith if (ac->ac_flags & AMR_CMD_DATAIN) 111465245Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 111565245Smsmith if (ac->ac_flags & AMR_CMD_DATAOUT) 111665245Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 111765245Smsmith } 111865245Smsmith 111965245Smsmith if (ac->ac_ccb_data != NULL) { 1120105419Semoore bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length, 112165245Smsmith amr_setup_ccbmap, ac, 0); 112265245Smsmith if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 112365245Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD); 112465245Smsmith if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 112565245Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE); 112665245Smsmith } 112765245Smsmith ac->ac_flags |= AMR_CMD_MAPPED; 112851974Smsmith } 112951974Smsmith} 113051974Smsmith 113151974Smsmithstatic void 113251974Smsmithamr_unmapcmd(struct amr_command *ac) 113351974Smsmith{ 113451974Smsmith struct amr_softc *sc = ac->ac_sc; 113551974Smsmith 113669319Smsmith debug_called(3); 113751974Smsmith 113865245Smsmith /* if the command involved data at all and was mapped */ 113965245Smsmith if (ac->ac_flags & AMR_CMD_MAPPED) { 114051974Smsmith 114165245Smsmith if (ac->ac_data != NULL) { 114265245Smsmith if (ac->ac_flags & AMR_CMD_DATAIN) 114365245Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 114465245Smsmith if (ac->ac_flags & AMR_CMD_DATAOUT) 114565245Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 114665245Smsmith bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 114765245Smsmith } 114865245Smsmith 114965245Smsmith if (ac->ac_ccb_data != NULL) { 115065245Smsmith if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 115165245Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD); 115265245Smsmith if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 115365245Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE); 115465245Smsmith bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap); 115565245Smsmith } 115665245Smsmith ac->ac_flags &= ~AMR_CMD_MAPPED; 115751974Smsmith } 115851974Smsmith} 115951974Smsmith 116051974Smsmith/******************************************************************************** 116165245Smsmith * Take a command and give it to the controller, returns 0 if successful, or 116265245Smsmith * EBUSY if the command should be retried later. 116351974Smsmith */ 116451974Smsmithstatic int 116551974Smsmithamr_start(struct amr_command *ac) 116651974Smsmith{ 116751974Smsmith struct amr_softc *sc = ac->ac_sc; 116858883Smsmith int done, s, i; 1169105419Semoore 117069319Smsmith debug_called(3); 117151974Smsmith 117265245Smsmith /* mark command as busy so that polling consumer can tell */ 117365245Smsmith ac->ac_flags |= AMR_CMD_BUSY; 117465245Smsmith 117565245Smsmith /* get a command slot (freed in amr_done) */ 117665245Smsmith if (amr_getslot(ac)) 117765245Smsmith return(EBUSY); 117865245Smsmith 117965245Smsmith /* now we have a slot, we can map the command (unmapped in amr_complete) */ 118065245Smsmith amr_mapcmd(ac); 118165245Smsmith 118265245Smsmith /* mark the new mailbox we are going to copy in as busy */ 118365245Smsmith ac->ac_mailbox.mb_busy = 1; 118465245Smsmith 118565245Smsmith /* clear the poll/ack fields in the mailbox */ 118665245Smsmith sc->amr_mailbox->mb_poll = 0; 118765245Smsmith sc->amr_mailbox->mb_ack = 0; 118865245Smsmith 118951974Smsmith /* 119051974Smsmith * Save the slot number so that we can locate this command when complete. 119151974Smsmith * Note that ident = 0 seems to be special, so we don't use it. 119251974Smsmith */ 119351974Smsmith ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 119451974Smsmith 119558883Smsmith /* 119665245Smsmith * Spin waiting for the mailbox, give up after ~1 second. We expect the 119765245Smsmith * controller to be able to handle our I/O. 119865245Smsmith * 119965245Smsmith * XXX perhaps we should wait for less time, and count on the deferred command 120065245Smsmith * handling to deal with retries? 120158883Smsmith */ 120269319Smsmith debug(4, "wait for mailbox"); 120358883Smsmith for (i = 10000, done = 0; (i > 0) && !done; i--) { 120451974Smsmith s = splbio(); 120551974Smsmith 120651974Smsmith /* is the mailbox free? */ 120751974Smsmith if (sc->amr_mailbox->mb_busy == 0) { 120869319Smsmith debug(4, "got mailbox"); 120951974Smsmith sc->amr_mailbox64->mb64_segment = 0; 121065245Smsmith bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 121151974Smsmith done = 1; 121251974Smsmith 121365245Smsmith /* not free, spin waiting */ 121451974Smsmith } else { 121569319Smsmith debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy); 121658883Smsmith /* this is somewhat ugly */ 121758883Smsmith DELAY(100); 121851974Smsmith } 121958883Smsmith splx(s); /* drop spl to allow completion interrupts */ 122051974Smsmith } 122165245Smsmith 122265245Smsmith /* 122365245Smsmith * Now give the command to the controller 122465245Smsmith */ 122551974Smsmith if (done) { 122665245Smsmith if (sc->amr_submit_command(sc)) { 122765245Smsmith /* the controller wasn't ready to take the command, forget that we tried to post it */ 122865245Smsmith sc->amr_mailbox->mb_busy = 0; 122965245Smsmith return(EBUSY); 123065245Smsmith } 123169319Smsmith debug(3, "posted command"); 123251974Smsmith return(0); 123351974Smsmith } 123451974Smsmith 123551974Smsmith /* 123665245Smsmith * The controller wouldn't take the command. Return the command as busy 123765245Smsmith * so that it is retried later. 123851974Smsmith */ 123965245Smsmith return(EBUSY); 124051974Smsmith} 124151974Smsmith 124251974Smsmith/******************************************************************************** 124351974Smsmith * Extract one or more completed commands from the controller (sc) 124451974Smsmith * 124552543Smsmith * Returns nonzero if any commands on the work queue were marked as completed. 124651974Smsmith */ 124765245Smsmithint 124851974Smsmithamr_done(struct amr_softc *sc) 124951974Smsmith{ 125051974Smsmith struct amr_command *ac; 125151974Smsmith struct amr_mailbox mbox; 125265245Smsmith int i, idx, result; 125351974Smsmith 125469319Smsmith debug_called(3); 125551974Smsmith 125651974Smsmith /* See if there's anything for us to do */ 125751974Smsmith result = 0; 125851974Smsmith 125958883Smsmith /* loop collecting completed commands */ 126058883Smsmith for (;;) { 126158883Smsmith /* poll for a completed command's identifier and status */ 126258883Smsmith if (sc->amr_get_work(sc, &mbox)) { 126358883Smsmith result = 1; 126458883Smsmith 126558883Smsmith /* iterate over completed commands in this result */ 126658883Smsmith for (i = 0; i < mbox.mb_nstatus; i++) { 126758883Smsmith /* get pointer to busy command */ 126858883Smsmith idx = mbox.mb_completed[i] - 1; 126958883Smsmith ac = sc->amr_busycmd[idx]; 127051974Smsmith 127158883Smsmith /* really a busy command? */ 127258883Smsmith if (ac != NULL) { 127358883Smsmith 127458883Smsmith /* pull the command from the busy index */ 127558883Smsmith sc->amr_busycmd[idx] = NULL; 127665245Smsmith sc->amr_busyslots--; 127751974Smsmith 127865245Smsmith /* save status for later use */ 127965245Smsmith ac->ac_status = mbox.mb_status; 128065245Smsmith amr_enqueue_completed(ac); 128165245Smsmith debug(3, "completed command with status %x", mbox.mb_status); 128265245Smsmith } else { 128365245Smsmith device_printf(sc->amr_dev, "bad slot %d completed\n", idx); 128451974Smsmith } 128551974Smsmith } 128658883Smsmith } else { 128765245Smsmith break; /* no work */ 128851974Smsmith } 128951974Smsmith } 129058883Smsmith 129158883Smsmith /* if we've completed any commands, try posting some more */ 129258883Smsmith if (result) 129358883Smsmith amr_startio(sc); 129458883Smsmith 129558883Smsmith /* handle completion and timeouts */ 129665245Smsmith#if __FreeBSD_version >= 500005 129765245Smsmith if (sc->amr_state & AMR_STATE_INTEN) 129865245Smsmith taskqueue_enqueue(taskqueue_swi, &sc->amr_task_complete); 129965245Smsmith else 130065245Smsmith#endif 130165245Smsmith amr_complete(sc, 0); 130258883Smsmith 130351974Smsmith return(result); 130451974Smsmith} 130551974Smsmith 130651974Smsmith/******************************************************************************** 130751974Smsmith * Do completion processing on done commands on (sc) 130851974Smsmith */ 130951974Smsmithstatic void 131065245Smsmithamr_complete(void *context, int pending) 131151974Smsmith{ 131265245Smsmith struct amr_softc *sc = (struct amr_softc *)context; 131365245Smsmith struct amr_command *ac; 131451974Smsmith 131569319Smsmith debug_called(3); 131651974Smsmith 131765245Smsmith /* pull completed commands off the queue */ 131865245Smsmith for (;;) { 131965245Smsmith ac = amr_dequeue_completed(sc); 132065245Smsmith if (ac == NULL) 132165245Smsmith break; 132258883Smsmith 132365245Smsmith /* unmap the command's data buffer */ 132465245Smsmith amr_unmapcmd(ac); 132551974Smsmith 132665245Smsmith /* unbusy the command */ 132765245Smsmith ac->ac_flags &= ~AMR_CMD_BUSY; 132851974Smsmith 132965245Smsmith /* 133065245Smsmith * Is there a completion handler? 133165245Smsmith */ 133265245Smsmith if (ac->ac_complete != NULL) { 133365245Smsmith ac->ac_complete(ac); 133465245Smsmith 133551974Smsmith /* 133665245Smsmith * Is someone sleeping on this one? 133751974Smsmith */ 133865245Smsmith } else if (ac->ac_flags & AMR_CMD_SLEEP) { 133965245Smsmith wakeup(ac); 134051974Smsmith } 134151974Smsmith } 134251974Smsmith} 134351974Smsmith 134451974Smsmith/******************************************************************************** 134551974Smsmith ******************************************************************************** 134651974Smsmith Command Buffer Management 134751974Smsmith ******************************************************************************** 134851974Smsmith ********************************************************************************/ 134951974Smsmith 135051974Smsmith/******************************************************************************** 135151974Smsmith * Get a new command buffer. 135251974Smsmith * 135351974Smsmith * This may return NULL in low-memory cases. 135451974Smsmith * 135551974Smsmith * If possible, we recycle a command buffer that's been used before. 135651974Smsmith */ 135765245Smsmithstruct amr_command * 135851974Smsmithamr_alloccmd(struct amr_softc *sc) 135951974Smsmith{ 136051974Smsmith struct amr_command *ac; 136151974Smsmith 136265245Smsmith debug_called(3); 136351974Smsmith 136465245Smsmith ac = amr_dequeue_free(sc); 136551974Smsmith if (ac == NULL) { 136665245Smsmith amr_alloccmd_cluster(sc); 136765245Smsmith ac = amr_dequeue_free(sc); 136851974Smsmith } 136965245Smsmith if (ac == NULL) 137065245Smsmith return(NULL); 137165245Smsmith 137265245Smsmith /* clear out significant fields */ 137365245Smsmith ac->ac_slot = 0; 137465245Smsmith ac->ac_status = 0; 137551974Smsmith bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 137665245Smsmith ac->ac_flags = 0; 137765245Smsmith ac->ac_bio = NULL; 137865245Smsmith ac->ac_data = NULL; 137965245Smsmith ac->ac_ccb_data = NULL; 138065245Smsmith ac->ac_complete = NULL; 138151974Smsmith return(ac); 138251974Smsmith} 138351974Smsmith 138451974Smsmith/******************************************************************************** 138551974Smsmith * Release a command buffer for recycling. 138651974Smsmith */ 138765245Smsmithvoid 138851974Smsmithamr_releasecmd(struct amr_command *ac) 138951974Smsmith{ 139065245Smsmith debug_called(3); 139151974Smsmith 139265245Smsmith amr_enqueue_free(ac); 139351974Smsmith} 139451974Smsmith 139551974Smsmith/******************************************************************************** 139665245Smsmith * Allocate a new command cluster and initialise it. 139751974Smsmith */ 1398104094Sphkstatic void 139965245Smsmithamr_alloccmd_cluster(struct amr_softc *sc) 140051974Smsmith{ 140165245Smsmith struct amr_command_cluster *acc; 140265245Smsmith struct amr_command *ac; 140365245Smsmith int s, i; 140451974Smsmith 140565245Smsmith acc = malloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_NOWAIT); 140665245Smsmith if (acc != NULL) { 140765245Smsmith s = splbio(); 140865245Smsmith TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link); 140965245Smsmith splx(s); 141065245Smsmith for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) { 141165245Smsmith ac = &acc->acc_command[i]; 141265245Smsmith bzero(ac, sizeof(*ac)); 141365245Smsmith ac->ac_sc = sc; 141465245Smsmith if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) && 141565245Smsmith !bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap)) 141665245Smsmith amr_releasecmd(ac); 141765245Smsmith } 141865245Smsmith } 141951974Smsmith} 142051974Smsmith 142151974Smsmith/******************************************************************************** 142265245Smsmith * Free a command cluster 142365245Smsmith */ 1424104094Sphkstatic void 142565245Smsmithamr_freecmd_cluster(struct amr_command_cluster *acc) 142665245Smsmith{ 142765245Smsmith struct amr_softc *sc = acc->acc_command[0].ac_sc; 142865245Smsmith int i; 142965245Smsmith 143065245Smsmith for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) 143165245Smsmith bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap); 143265245Smsmith free(acc, M_DEVBUF); 143365245Smsmith} 143465245Smsmith 143565245Smsmith/******************************************************************************** 143651974Smsmith ******************************************************************************** 143751974Smsmith Interface-specific Shims 143851974Smsmith ******************************************************************************** 143951974Smsmith ********************************************************************************/ 144051974Smsmith 144151974Smsmith/******************************************************************************** 144251974Smsmith * Tell the controller that the mailbox contains a valid command 144351974Smsmith */ 144465245Smsmithstatic int 144551974Smsmithamr_quartz_submit_command(struct amr_softc *sc) 144651974Smsmith{ 144765245Smsmith debug_called(3); 144851974Smsmith 144965245Smsmith if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 145065245Smsmith return(EBUSY); 145151974Smsmith AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 145265245Smsmith return(0); 145351974Smsmith} 145451974Smsmith 145565245Smsmithstatic int 145651974Smsmithamr_std_submit_command(struct amr_softc *sc) 145751974Smsmith{ 145865245Smsmith debug_called(3); 145951974Smsmith 146065245Smsmith if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 146165245Smsmith return(EBUSY); 146251974Smsmith AMR_SPOST_COMMAND(sc); 146365245Smsmith return(0); 146451974Smsmith} 146551974Smsmith 146651974Smsmith/******************************************************************************** 146751974Smsmith * Claim any work that the controller has completed; acknowledge completion, 146851974Smsmith * save details of the completion in (mbsave) 146951974Smsmith */ 147051974Smsmithstatic int 147151974Smsmithamr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 147251974Smsmith{ 147351974Smsmith int s, worked; 147451974Smsmith u_int32_t outd; 147551974Smsmith 147665245Smsmith debug_called(3); 147765245Smsmith 147851974Smsmith worked = 0; 147951974Smsmith s = splbio(); 148051974Smsmith 148151974Smsmith /* work waiting for us? */ 148251974Smsmith if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 148351974Smsmith 148451974Smsmith /* save mailbox, which contains a list of completed commands */ 148565245Smsmith bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 148651974Smsmith 148765245Smsmith /* acknowledge interrupt */ 148865245Smsmith AMR_QPUT_ODB(sc, AMR_QODB_READY); 148965245Smsmith 149051974Smsmith /* acknowledge that we have the commands */ 149151974Smsmith AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 149265245Smsmith 149365763Smsmith#ifndef AMR_QUARTZ_GOFASTER 149465245Smsmith /* 149565245Smsmith * This waits for the controller to notice that we've taken the 149665245Smsmith * command from it. It's very inefficient, and we shouldn't do it, 149765245Smsmith * but if we remove this code, we stop completing commands under 149865245Smsmith * load. 149965245Smsmith * 150065245Smsmith * Peter J says we shouldn't do this. The documentation says we 150165245Smsmith * should. Who is right? 150265245Smsmith */ 150351974Smsmith while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 150451974Smsmith ; /* XXX aiee! what if it dies? */ 150565245Smsmith#endif 150665245Smsmith 150751974Smsmith worked = 1; /* got some work */ 150851974Smsmith } 150951974Smsmith 151051974Smsmith splx(s); 151151974Smsmith return(worked); 151251974Smsmith} 151351974Smsmith 151451974Smsmithstatic int 151551974Smsmithamr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 151651974Smsmith{ 151751974Smsmith int s, worked; 151851974Smsmith u_int8_t istat; 151951974Smsmith 152065245Smsmith debug_called(3); 152151974Smsmith 152251974Smsmith worked = 0; 152351974Smsmith s = splbio(); 152451974Smsmith 152551974Smsmith /* check for valid interrupt status */ 152651974Smsmith istat = AMR_SGET_ISTAT(sc); 152751974Smsmith if ((istat & AMR_SINTR_VALID) != 0) { 152851974Smsmith AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 152951974Smsmith 153051974Smsmith /* save mailbox, which contains a list of completed commands */ 153165245Smsmith bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 153251974Smsmith 153351974Smsmith AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 153451974Smsmith worked = 1; 153551974Smsmith } 153651974Smsmith 153751974Smsmith splx(s); 153851974Smsmith return(worked); 153951974Smsmith} 154051974Smsmith 154151974Smsmith/******************************************************************************** 154251974Smsmith * Notify the controller of the mailbox location. 154351974Smsmith */ 154451974Smsmithstatic void 154551974Smsmithamr_std_attach_mailbox(struct amr_softc *sc) 154651974Smsmith{ 154751974Smsmith 154851974Smsmith /* program the mailbox physical address */ 154951974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 155051974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 155151974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 155251974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 155351974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 155451974Smsmith 155551974Smsmith /* clear any outstanding interrupt and enable interrupts proper */ 155651974Smsmith AMR_SACK_INTERRUPT(sc); 155751974Smsmith AMR_SENABLE_INTR(sc); 155851974Smsmith} 155951974Smsmith 156065245Smsmith#ifdef AMR_BOARD_INIT 156151974Smsmith/******************************************************************************** 156265245Smsmith * Initialise the controller 156365245Smsmith */ 156465245Smsmithstatic int 156565245Smsmithamr_quartz_init(struct amr_softc *sc) 156665245Smsmith{ 156765245Smsmith int status, ostatus; 156865245Smsmith 156965245Smsmith device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc)); 157065245Smsmith 157165245Smsmith AMR_QRESET(sc); 157265245Smsmith 157365245Smsmith ostatus = 0xff; 157465245Smsmith while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) { 157565245Smsmith if (status != ostatus) { 157665245Smsmith device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status)); 157765245Smsmith ostatus = status; 157865245Smsmith } 157965245Smsmith switch (status) { 158065245Smsmith case AMR_QINIT_NOMEM: 158165245Smsmith return(ENOMEM); 158265245Smsmith 158365245Smsmith case AMR_QINIT_SCAN: 158465245Smsmith /* XXX we could print channel/target here */ 158565245Smsmith break; 158665245Smsmith } 158765245Smsmith } 158865245Smsmith return(0); 158965245Smsmith} 159065245Smsmith 159165245Smsmithstatic int 159265245Smsmithamr_std_init(struct amr_softc *sc) 159365245Smsmith{ 159465245Smsmith int status, ostatus; 159565245Smsmith 159665245Smsmith device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc)); 159765245Smsmith 159865245Smsmith AMR_SRESET(sc); 159965245Smsmith 160065245Smsmith ostatus = 0xff; 160165245Smsmith while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) { 160265245Smsmith if (status != ostatus) { 160365245Smsmith device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status)); 160465245Smsmith ostatus = status; 160565245Smsmith } 160665245Smsmith switch (status) { 160765245Smsmith case AMR_SINIT_NOMEM: 160865245Smsmith return(ENOMEM); 160965245Smsmith 161065245Smsmith case AMR_SINIT_INPROG: 161165245Smsmith /* XXX we could print channel/target here? */ 161265245Smsmith break; 161365245Smsmith } 161465245Smsmith } 161565245Smsmith return(0); 161665245Smsmith} 161765245Smsmith#endif 161865245Smsmith 161965245Smsmith/******************************************************************************** 162051974Smsmith ******************************************************************************** 162151974Smsmith Debugging 162251974Smsmith ******************************************************************************** 162351974Smsmith ********************************************************************************/ 162451974Smsmith 162551974Smsmith/******************************************************************************** 162665245Smsmith * Identify the controller and print some information about it. 162765245Smsmith */ 162865245Smsmithstatic void 162965245Smsmithamr_describe_controller(struct amr_softc *sc) 163065245Smsmith{ 163165245Smsmith struct amr_prodinfo *ap; 163265245Smsmith struct amr_enquiry *ae; 163365245Smsmith char *prod; 163465245Smsmith 163565245Smsmith /* 163665245Smsmith * Try to get 40LD product info, which tells us what the card is labelled as. 163765245Smsmith */ 163865245Smsmith if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) { 1639105419Semoore device_printf(sc->amr_dev, "<LSILogic %.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n", 164065245Smsmith ap->ap_product, ap->ap_firmware, ap->ap_bios, 164165245Smsmith ap->ap_memsize); 164265245Smsmith 164365245Smsmith free(ap, M_DEVBUF); 164465245Smsmith return; 164565245Smsmith } 164665245Smsmith 164765245Smsmith /* 164865245Smsmith * Try 8LD extended ENQUIRY to get controller signature, and use lookup table. 164965245Smsmith */ 165065245Smsmith if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) { 165165245Smsmith prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature); 165265245Smsmith 165365245Smsmith } else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) { 165465245Smsmith 165565245Smsmith /* 165665245Smsmith * Try to work it out based on the PCI signatures. 165765245Smsmith */ 165865245Smsmith switch (pci_get_device(sc->amr_dev)) { 165965245Smsmith case 0x9010: 166065245Smsmith prod = "Series 428"; 166165245Smsmith break; 166265245Smsmith case 0x9060: 166365245Smsmith prod = "Series 434"; 166465245Smsmith break; 166565245Smsmith default: 166665245Smsmith prod = "unknown controller"; 166765245Smsmith break; 166865245Smsmith } 166965245Smsmith } else { 167065245Smsmith prod = "unsupported controller"; 167165245Smsmith } 167274936Shm 167374936Shm /* 167474936Shm * HP NetRaid controllers have a special encoding of the firmware and 167574936Shm * BIOS versions. The AMI version seems to have it as strings whereas 167674936Shm * the HP version does it with a leading uppercase character and two 167774936Shm * binary numbers. 167874936Shm */ 167974936Shm 168074936Shm if(ae->ae_adapter.aa_firmware[2] >= 'A' && 168174936Shm ae->ae_adapter.aa_firmware[2] <= 'Z' && 168274936Shm ae->ae_adapter.aa_firmware[1] < ' ' && 168374936Shm ae->ae_adapter.aa_firmware[0] < ' ' && 168474936Shm ae->ae_adapter.aa_bios[2] >= 'A' && 168574936Shm ae->ae_adapter.aa_bios[2] <= 'Z' && 168674936Shm ae->ae_adapter.aa_bios[1] < ' ' && 168774936Shm ae->ae_adapter.aa_bios[0] < ' ') { 168874936Shm 168974936Shm /* this looks like we have an HP NetRaid version of the MegaRaid */ 169074936Shm 169174936Shm if(ae->ae_signature == AMR_SIG_438) { 169274936Shm /* the AMI 438 is an NetRaid 3si in HP-land */ 169374936Shm prod = "HP NetRaid 3si"; 169474936Shm } 169574936Shm 169674936Shm device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n", 169774936Shm prod, ae->ae_adapter.aa_firmware[2], 169874936Shm ae->ae_adapter.aa_firmware[1], 169974936Shm ae->ae_adapter.aa_firmware[0], 170074936Shm ae->ae_adapter.aa_bios[2], 170174936Shm ae->ae_adapter.aa_bios[1], 170274936Shm ae->ae_adapter.aa_bios[0], 170374936Shm ae->ae_adapter.aa_memorysize); 170474936Shm } else { 170574936Shm device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n", 170674936Shm prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 170774936Shm ae->ae_adapter.aa_memorysize); 170874936Shm } 170965245Smsmith free(ae, M_DEVBUF); 171065245Smsmith} 171165245Smsmith 171265245Smsmith#ifdef AMR_DEBUG 171365245Smsmith/******************************************************************************** 171451974Smsmith * Print the command (ac) in human-readable format 171551974Smsmith */ 171651974Smsmithstatic void 171751974Smsmithamr_printcommand(struct amr_command *ac) 171851974Smsmith{ 171951974Smsmith struct amr_softc *sc = ac->ac_sc; 172051974Smsmith struct amr_sgentry *sg; 172151974Smsmith int i; 172251974Smsmith 172351974Smsmith device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 172451974Smsmith ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 172551974Smsmith device_printf(sc->amr_dev, "blkcount %d lba %d\n", 172651974Smsmith ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 172754512Speter device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 172858883Smsmith device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 172951974Smsmith ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 173065245Smsmith device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 173151974Smsmith 173251974Smsmith /* get base address of s/g table */ 173351974Smsmith sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 173451974Smsmith for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 173551974Smsmith device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 173651974Smsmith} 173765245Smsmith#endif 1738