amr.c revision 52543
151974Smsmith/*- 251974Smsmith * Copyright (c) 1999 Michael Smith 351974Smsmith * All rights reserved. 451974Smsmith * 551974Smsmith * Redistribution and use in source and binary forms, with or without 651974Smsmith * modification, are permitted provided that the following conditions 751974Smsmith * are met: 851974Smsmith * 1. Redistributions of source code must retain the above copyright 951974Smsmith * notice, this list of conditions and the following disclaimer. 1051974Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1151974Smsmith * notice, this list of conditions and the following disclaimer in the 1251974Smsmith * documentation and/or other materials provided with the distribution. 1351974Smsmith * 1451974Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1551974Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1651974Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1751974Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1851974Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1951974Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2051974Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2151974Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2251974Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2351974Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2451974Smsmith * SUCH DAMAGE. 2551974Smsmith * 2651974Smsmith * $FreeBSD: head/sys/dev/amr/amr.c 52543 1999-10-26 23:18:57Z msmith $ 2751974Smsmith */ 2851974Smsmith 2951974Smsmith/* 3051974Smsmith * Driver for the AMI MegaRaid family of controllers 3151974Smsmith */ 3251974Smsmith 3351974Smsmith#include <sys/param.h> 3451974Smsmith#include <sys/systm.h> 3551974Smsmith#include <sys/malloc.h> 3651974Smsmith#include <sys/kernel.h> 3751974Smsmith 3851974Smsmith#include <sys/buf.h> 3951974Smsmith#include <sys/bus.h> 4051974Smsmith#include <sys/conf.h> 4151974Smsmith#include <sys/devicestat.h> 4251974Smsmith#include <sys/disk.h> 4351974Smsmith 4451974Smsmith#include <machine/resource.h> 4551974Smsmith#include <machine/bus.h> 4651974Smsmith#include <machine/clock.h> 4751974Smsmith#include <sys/rman.h> 4851974Smsmith 4951974Smsmith#include <dev/amr/amrio.h> 5051974Smsmith#include <dev/amr/amrreg.h> 5151974Smsmith#include <dev/amr/amrvar.h> 5251974Smsmith 5351974Smsmith#if 0 5451974Smsmith#define debug(fmt, args...) printf("%s: " fmt "\n", __FUNCTION__ , ##args) 5551974Smsmith#else 5651974Smsmith#define debug(fmt, args...) 5751974Smsmith#endif 5851974Smsmith 5951974Smsmith#define AMR_CDEV_MAJOR 132 6051974Smsmith 6151974Smsmithstatic struct cdevsw amr_cdevsw = { 6251974Smsmith /* open */ amr_open, 6351974Smsmith /* close */ amr_close, 6451974Smsmith /* read */ noread, 6551974Smsmith /* write */ nowrite, 6651974Smsmith /* ioctl */ amr_ioctl, 6751974Smsmith /* poll */ nopoll, 6851974Smsmith /* mmap */ nommap, 6951974Smsmith /* strategy */ nostrategy, 7051974Smsmith /* name */ "amr", 7151974Smsmith /* maj */ AMR_CDEV_MAJOR, 7251974Smsmith /* dump */ nodump, 7351974Smsmith /* psize */ nopsize, 7451974Smsmith /* flags */ 0, 7551974Smsmith /* bmaj */ 254 /* XXX magic no-bdev */ 7651974Smsmith}; 7751974Smsmith 7851974Smsmithstatic int cdev_registered = 0; 7951974Smsmithdevclass_t amr_devclass; 8051974Smsmith 8151974Smsmith/* 8251974Smsmith * Command wrappers 8351974Smsmith */ 8451974Smsmithstatic int amr_query_controller(struct amr_softc *sc); 8551974Smsmithstatic void *amr_enquiry(struct amr_softc *sc, size_t bufsize, 8651974Smsmith u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual); 8751974Smsmithstatic int amr_flush(struct amr_softc *sc); 8851974Smsmithstatic void amr_startio(struct amr_softc *sc); 8951974Smsmithstatic void amr_completeio(struct amr_command *ac); 9051974Smsmith 9151974Smsmith/* 9251974Smsmith * Command processing. 9351974Smsmith */ 9451974Smsmithstatic int amr_wait_command(struct amr_command *ac); 9551974Smsmithstatic int amr_poll_command(struct amr_command *ac); 9651974Smsmithstatic int amr_getslot(struct amr_command *ac); 9751974Smsmithstatic void amr_mapcmd(struct amr_command *ac); 9851974Smsmithstatic void amr_unmapcmd(struct amr_command *ac); 9951974Smsmithstatic int amr_start(struct amr_command *ac); 10051974Smsmithstatic int amr_done(struct amr_softc *sc); 10151974Smsmithstatic void amr_complete(struct amr_softc *sc); 10251974Smsmith 10351974Smsmith/* 10451974Smsmith * Command buffer allocation. 10551974Smsmith */ 10651974Smsmithstatic struct amr_command *amr_alloccmd(struct amr_softc *sc); 10751974Smsmithstatic void amr_releasecmd(struct amr_command *ac); 10851974Smsmithstatic void amr_freecmd(struct amr_command *ac); 10951974Smsmith 11051974Smsmith/* 11151974Smsmith * Interface-specific shims 11251974Smsmith */ 11351974Smsmithstatic void amr_quartz_submit_command(struct amr_softc *sc); 11451974Smsmithstatic int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 11551974Smsmithstatic void amr_quartz_attach_mailbox(struct amr_softc *sc); 11651974Smsmith 11751974Smsmithstatic void amr_std_submit_command(struct amr_softc *sc); 11851974Smsmithstatic int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 11951974Smsmithstatic void amr_std_attach_mailbox(struct amr_softc *sc); 12051974Smsmith 12151974Smsmith/* 12251974Smsmith * Debugging 12351974Smsmith */ 12451974Smsmithstatic void amr_printcommand(struct amr_command *ac); 12551974Smsmith 12651974Smsmith/******************************************************************************** 12751974Smsmith ******************************************************************************** 12851974Smsmith Public Interfaces 12951974Smsmith ******************************************************************************** 13051974Smsmith ********************************************************************************/ 13151974Smsmith 13251974Smsmith/******************************************************************************** 13351974Smsmith * Free all of the resources associated with (sc) 13451974Smsmith * 13551974Smsmith * Should not be called if the controller is active. 13651974Smsmith */ 13751974Smsmithvoid 13851974Smsmithamr_free(struct amr_softc *sc) 13951974Smsmith{ 14051974Smsmith struct amr_command *ac; 14151974Smsmith u_int8_t *p; 14251974Smsmith 14351974Smsmith debug("called"); 14451974Smsmith 14551974Smsmith 14651974Smsmith /* throw away any command buffers */ 14751974Smsmith while ((ac = TAILQ_FIRST(&sc->amr_freecmds)) != NULL) { 14851974Smsmith TAILQ_REMOVE(&sc->amr_freecmds, ac, ac_link); 14951974Smsmith amr_freecmd(ac); 15051974Smsmith } 15151974Smsmith 15251974Smsmith /* destroy data-transfer DMA tag */ 15351974Smsmith if (sc->amr_buffer_dmat) 15451974Smsmith bus_dma_tag_destroy(sc->amr_buffer_dmat); 15551974Smsmith 15651974Smsmith /* free and destroy DMA memory and tag for s/g lists */ 15751974Smsmith if (sc->amr_sgtable) 15851974Smsmith bus_dmamem_free(sc->amr_sg_dmat, sc->amr_sgtable, sc->amr_sg_dmamap); 15951974Smsmith if (sc->amr_sg_dmat) 16051974Smsmith bus_dma_tag_destroy(sc->amr_sg_dmat); 16151974Smsmith 16251974Smsmith /* free and destroy DMA memory and tag for mailbox */ 16351974Smsmith if (sc->amr_mailbox) { 16451974Smsmith p = (u_int8_t *)sc->amr_mailbox; 16551974Smsmith bus_dmamem_free(sc->amr_sg_dmat, p - 16, sc->amr_sg_dmamap); 16651974Smsmith } 16751974Smsmith if (sc->amr_sg_dmat) 16851974Smsmith bus_dma_tag_destroy(sc->amr_sg_dmat); 16951974Smsmith 17051974Smsmith /* disconnect the interrupt handler */ 17151974Smsmith if (sc->amr_intr) 17251974Smsmith bus_teardown_intr(sc->amr_dev, sc->amr_irq, sc->amr_intr); 17351974Smsmith if (sc->amr_irq != NULL) 17451974Smsmith bus_release_resource(sc->amr_dev, SYS_RES_IRQ, 0, sc->amr_irq); 17551974Smsmith 17651974Smsmith /* destroy the parent DMA tag */ 17751974Smsmith if (sc->amr_parent_dmat) 17851974Smsmith bus_dma_tag_destroy(sc->amr_parent_dmat); 17951974Smsmith 18051974Smsmith /* release the register window mapping */ 18151974Smsmith if (sc->amr_reg != NULL) 18251974Smsmith bus_release_resource(sc->amr_dev, 18351974Smsmith (sc->amr_type == AMR_TYPE_QUARTZ) ? SYS_RES_MEMORY : SYS_RES_IOPORT, 18451974Smsmith AMR_CFG_BASE, sc->amr_reg); 18551974Smsmith} 18651974Smsmith 18751974Smsmith/******************************************************************************** 18851974Smsmith * Allocate and map the scatter/gather table in bus space. 18951974Smsmith */ 19051974Smsmithstatic void 19151974Smsmithamr_dma_map_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 19251974Smsmith{ 19351974Smsmith struct amr_softc *sc = (struct amr_softc *)arg; 19451974Smsmith 19551974Smsmith debug("called"); 19651974Smsmith 19751974Smsmith /* save base of s/g table's address in bus space */ 19851974Smsmith sc->amr_sgbusaddr = segs->ds_addr; 19951974Smsmith} 20051974Smsmith 20151974Smsmithstatic int 20251974Smsmithamr_sglist_map(struct amr_softc *sc) 20351974Smsmith{ 20451974Smsmith size_t segsize; 20551974Smsmith int error; 20651974Smsmith 20751974Smsmith debug("called"); 20851974Smsmith 20951974Smsmith /* destroy any existing mappings */ 21051974Smsmith if (sc->amr_sgtable) 21151974Smsmith bus_dmamem_free(sc->amr_sg_dmat, sc->amr_sgtable, sc->amr_sg_dmamap); 21251974Smsmith if (sc->amr_sg_dmat) 21351974Smsmith bus_dma_tag_destroy(sc->amr_sg_dmat); 21451974Smsmith 21551974Smsmith /* 21651974Smsmith * Create a single tag describing a region large enough to hold all of 21751974Smsmith * the s/g lists we will need. 21851974Smsmith */ 21951974Smsmith segsize = sizeof(struct amr_sgentry) * AMR_NSEG * sc->amr_maxio; 22051974Smsmith error = bus_dma_tag_create(sc->amr_parent_dmat, /* parent */ 22151974Smsmith 1, 0, /* alignment, boundary */ 22251974Smsmith BUS_SPACE_MAXADDR, /* lowaddr */ 22351974Smsmith BUS_SPACE_MAXADDR, /* highaddr */ 22451974Smsmith NULL, NULL, /* filter, filterarg */ 22551974Smsmith segsize, 1, /* maxsize, nsegments */ 22651974Smsmith BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 22751974Smsmith 0, /* flags */ 22851974Smsmith &sc->amr_sg_dmat); 22951974Smsmith if (error != 0) { 23051974Smsmith device_printf(sc->amr_dev, "can't allocate scatter/gather DMA tag\n"); 23151974Smsmith return(ENOMEM); 23251974Smsmith } 23351974Smsmith 23451974Smsmith /* 23551974Smsmith * Allocate enough s/g maps for all commands and permanently map them into 23651974Smsmith * controller-visible space. 23751974Smsmith * 23851974Smsmith * XXX this assumes we can get enough space for all the s/g maps in one 23951974Smsmith * contiguous slab. We may need to switch to a more complex arrangement where 24051974Smsmith * we allocate in smaller chunks and keep a lookup table from slot to bus address. 24151974Smsmith */ 24251974Smsmith error = bus_dmamem_alloc(sc->amr_sg_dmat, (void **)&sc->amr_sgtable, BUS_DMA_NOWAIT, &sc->amr_sg_dmamap); 24351974Smsmith if (error) { 24451974Smsmith device_printf(sc->amr_dev, "can't allocate s/g table\n"); 24551974Smsmith return(ENOMEM); 24651974Smsmith } 24751974Smsmith bus_dmamap_load(sc->amr_sg_dmat, sc->amr_sg_dmamap, sc->amr_sgtable, segsize, amr_dma_map_sg, sc, 0); 24851974Smsmith return(0); 24951974Smsmith} 25051974Smsmith 25151974Smsmith/******************************************************************************** 25251974Smsmith * Allocate and set up mailbox areas for the controller (sc) 25351974Smsmith * 25451974Smsmith * The basic mailbox structure should be 16-byte aligned. This means that the 25551974Smsmith * mailbox64 structure has 4 bytes hanging off the bottom. 25651974Smsmith */ 25751974Smsmithstatic void 25851974Smsmithamr_map_mailbox(void *arg, bus_dma_segment_t *segs, int nseg, int error) 25951974Smsmith{ 26051974Smsmith struct amr_softc *sc = (struct amr_softc *)arg; 26151974Smsmith 26251974Smsmith debug("called"); 26351974Smsmith 26451974Smsmith /* save phsyical base of the basic mailbox structure */ 26551974Smsmith sc->amr_mailboxphys = segs->ds_addr + 16; 26651974Smsmith} 26751974Smsmith 26851974Smsmithstatic int 26951974Smsmithamr_setup_mbox(struct amr_softc *sc) 27051974Smsmith{ 27151974Smsmith int error; 27251974Smsmith u_int8_t *p; 27351974Smsmith 27451974Smsmith debug("called"); 27551974Smsmith 27651974Smsmith /* 27751974Smsmith * Create a single tag describing a region large enough to hold the entire 27851974Smsmith * mailbox. 27951974Smsmith */ 28051974Smsmith error = bus_dma_tag_create(sc->amr_parent_dmat, /* parent */ 28151974Smsmith 16, 0, /* alignment, boundary */ 28251974Smsmith BUS_SPACE_MAXADDR, /* lowaddr */ 28351974Smsmith BUS_SPACE_MAXADDR, /* highaddr */ 28451974Smsmith NULL, NULL, /* filter, filterarg */ 28551974Smsmith sizeof(struct amr_mailbox) + 16, 1, /* maxsize, nsegments */ 28651974Smsmith BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 28751974Smsmith 0, /* flags */ 28851974Smsmith &sc->amr_mailbox_dmat); 28951974Smsmith if (error != 0) { 29051974Smsmith device_printf(sc->amr_dev, "can't allocate mailbox tag\n"); 29151974Smsmith return(ENOMEM); 29251974Smsmith } 29351974Smsmith 29451974Smsmith /* 29551974Smsmith * Allocate the mailbox structure and permanently map it into 29651974Smsmith * controller-visible space. 29751974Smsmith */ 29851974Smsmith error = bus_dmamem_alloc(sc->amr_mailbox_dmat, (void **)&p, BUS_DMA_NOWAIT, 29951974Smsmith &sc->amr_mailbox_dmamap); 30051974Smsmith if (error) { 30151974Smsmith device_printf(sc->amr_dev, "can't allocate mailbox memory\n"); 30251974Smsmith return(ENOMEM); 30351974Smsmith } 30451974Smsmith bus_dmamap_load(sc->amr_mailbox_dmat, sc->amr_mailbox_dmamap, p, 30551974Smsmith sizeof(struct amr_mailbox64), amr_map_mailbox, sc, 0); 30651974Smsmith /* 30751974Smsmith * Conventional mailbox is inside the mailbox64 region. 30851974Smsmith */ 30951974Smsmith bzero(p, sizeof(struct amr_mailbox64)); 31051974Smsmith sc->amr_mailbox64 = (struct amr_mailbox64 *)(p + 12); 31151974Smsmith sc->amr_mailbox = (struct amr_mailbox *)(p + 16); 31251974Smsmith 31351974Smsmith if (sc->amr_type == AMR_TYPE_STD) { 31451974Smsmith /* XXX we have to tell the controller where we put it */ 31551974Smsmith } 31651974Smsmith return(0); 31751974Smsmith} 31851974Smsmith 31951974Smsmith 32051974Smsmith/******************************************************************************** 32151974Smsmith * Initialise the controller and softc. 32251974Smsmith */ 32351974Smsmithint 32451974Smsmithamr_attach(struct amr_softc *sc) 32551974Smsmith{ 32651974Smsmith int rid, error; 32751974Smsmith 32851974Smsmith /* 32951974Smsmith * Initialise per-controller queues. 33051974Smsmith */ 33152543Smsmith TAILQ_INIT(&sc->amr_work); 33251974Smsmith TAILQ_INIT(&sc->amr_freecmds); 33351974Smsmith bufq_init(&sc->amr_bufq); 33451974Smsmith 33551974Smsmith /* 33651974Smsmith * Configure for this controller type. 33751974Smsmith */ 33851974Smsmith if (sc->amr_type == AMR_TYPE_QUARTZ) { 33951974Smsmith sc->amr_submit_command = amr_quartz_submit_command; 34051974Smsmith sc->amr_get_work = amr_quartz_get_work; 34151974Smsmith sc->amr_attach_mailbox = amr_quartz_attach_mailbox; 34251974Smsmith } else { 34351974Smsmith sc->amr_submit_command = amr_std_submit_command; 34451974Smsmith sc->amr_get_work = amr_std_get_work; 34551974Smsmith sc->amr_attach_mailbox = amr_std_attach_mailbox; 34651974Smsmith } 34751974Smsmith 34851974Smsmith /* 34951974Smsmith * Allocate and connect our interrupt. 35051974Smsmith */ 35151974Smsmith rid = 0; 35251974Smsmith sc->amr_irq = bus_alloc_resource(sc->amr_dev, SYS_RES_IRQ, &rid, 0, ~0, 1, RF_SHAREABLE | RF_ACTIVE); 35351974Smsmith if (sc->amr_irq == NULL) { 35451974Smsmith device_printf(sc->amr_dev, "couldn't allocate interrupt\n"); 35551974Smsmith amr_free(sc); 35651974Smsmith return(ENXIO); 35751974Smsmith } 35851974Smsmith error = bus_setup_intr(sc->amr_dev, sc->amr_irq, INTR_TYPE_BIO, amr_intr, sc, &sc->amr_intr); 35951974Smsmith if (error) { 36051974Smsmith device_printf(sc->amr_dev, "couldn't set up interrupt\n"); 36151974Smsmith amr_free(sc); 36251974Smsmith return(ENXIO); 36351974Smsmith } 36451974Smsmith 36551974Smsmith /* 36651974Smsmith * Create DMA tag for mapping buffers into controller-addressable space. 36751974Smsmith */ 36851974Smsmith error = bus_dma_tag_create(sc->amr_parent_dmat, /* parent */ 36951974Smsmith 1, 0, /* alignment, boundary */ 37051974Smsmith BUS_SPACE_MAXADDR, /* lowaddr */ 37151974Smsmith BUS_SPACE_MAXADDR, /* highaddr */ 37251974Smsmith NULL, NULL, /* filter, filterarg */ 37351974Smsmith MAXBSIZE, AMR_NSEG, /* maxsize, nsegments */ 37451974Smsmith BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 37551974Smsmith 0, /* flags */ 37651974Smsmith &sc->amr_buffer_dmat); 37751974Smsmith if (error != 0) { 37851974Smsmith device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n"); 37951974Smsmith return(ENOMEM); 38051974Smsmith } 38151974Smsmith 38251974Smsmith /* 38351974Smsmith * Allocate and set up mailbox in a bus-visible fashion, attach to controller. 38451974Smsmith */ 38551974Smsmith if ((error = amr_setup_mbox(sc)) != 0) 38651974Smsmith return(error); 38751974Smsmith sc->amr_attach_mailbox(sc); 38851974Smsmith 38951974Smsmith /* 39051974Smsmith * Build a temporary set of scatter/gather buffers. 39151974Smsmith */ 39251974Smsmith sc->amr_maxio = 2; 39351974Smsmith if (amr_sglist_map(sc)) 39451974Smsmith return(ENXIO); 39551974Smsmith 39651974Smsmith /* 39751974Smsmith * Quiz controller for features and limits. 39851974Smsmith */ 39951974Smsmith if (amr_query_controller(sc)) 40051974Smsmith return(ENXIO); 40151974Smsmith 40251974Smsmith /* 40351974Smsmith * Rebuild the scatter/gather buffers now we know how many we need. 40451974Smsmith */ 40551974Smsmith if (amr_sglist_map(sc)) 40651974Smsmith return(ENXIO); 40751974Smsmith 40851974Smsmith return(0); 40951974Smsmith} 41051974Smsmith 41151974Smsmith/******************************************************************************** 41251974Smsmith * Locate disk resources and attach children to them. 41351974Smsmith */ 41451974Smsmithvoid 41551974Smsmithamr_startup(struct amr_softc *sc) 41651974Smsmith{ 41751974Smsmith struct amr_logdrive *dr; 41851974Smsmith int i, error; 41951974Smsmith 42051974Smsmith debug("called"); 42151974Smsmith 42251974Smsmith /* get up-to-date drive information */ 42351974Smsmith if (amr_query_controller(sc)) { 42451974Smsmith device_printf(sc->amr_dev, "couldn't scan controller for drives\n"); 42551974Smsmith return; 42651974Smsmith } 42751974Smsmith 42851974Smsmith /* iterate over available drives */ 42951974Smsmith for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 43051974Smsmith /* are we already attached to this drive? */ 43151974Smsmith if (dr->al_disk == 0) { 43251974Smsmith /* generate geometry information */ 43351974Smsmith if (dr->al_size > 0x200000) { /* extended translation? */ 43451974Smsmith dr->al_heads = 255; 43551974Smsmith dr->al_sectors = 63; 43651974Smsmith } else { 43751974Smsmith dr->al_heads = 64; 43851974Smsmith dr->al_sectors = 32; 43951974Smsmith } 44051974Smsmith dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 44151974Smsmith 44251974Smsmith dr->al_disk = device_add_child(sc->amr_dev, NULL, -1, dr); 44351974Smsmith if (dr->al_disk == 0) 44451974Smsmith device_printf(sc->amr_dev, "device_add_child failed\n"); 44551974Smsmith } 44651974Smsmith } 44751974Smsmith 44851974Smsmith if ((error = bus_generic_attach(sc->amr_dev)) != 0) 44951974Smsmith device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 45051974Smsmith 45151974Smsmith /* mark controller back up */ 45251974Smsmith sc->amr_state &= ~AMR_STATE_SHUTDOWN; 45351974Smsmith 45451974Smsmith /* interrupts will be enabled before we do anything more */ 45551974Smsmith sc->amr_state |= AMR_STATE_INTEN; 45651974Smsmith} 45751974Smsmith 45851974Smsmith/******************************************************************************** 45951974Smsmith * Disconnect from the controller completely, in preparation for unload. 46051974Smsmith */ 46151974Smsmithint 46251974Smsmithamr_detach(device_t dev) 46351974Smsmith{ 46451974Smsmith struct amr_softc *sc = device_get_softc(dev); 46551974Smsmith int error; 46651974Smsmith 46751974Smsmith debug("called"); 46851974Smsmith 46951974Smsmith if (sc->amr_state & AMR_STATE_OPEN) 47051974Smsmith return(EBUSY); 47151974Smsmith 47251974Smsmith if ((error = amr_shutdown(dev))) 47351974Smsmith return(error); 47451974Smsmith 47551974Smsmith amr_free(sc); 47651974Smsmith 47751974Smsmith /* 47851974Smsmith * Deregister the control device on last detach. 47951974Smsmith */ 48051974Smsmith if (--cdev_registered == 0) 48151974Smsmith cdevsw_remove(&amr_cdevsw); 48251974Smsmith 48351974Smsmith return(0); 48451974Smsmith} 48551974Smsmith 48651974Smsmith/******************************************************************************** 48751974Smsmith * Bring the controller down to a dormant state and detach all child devices. 48851974Smsmith * 48951974Smsmith * This function is called before detach, system shutdown, or before performing 49051974Smsmith * an operation which may add or delete system disks. (Call amr_startup to 49151974Smsmith * resume normal operation.) 49251974Smsmith * 49351974Smsmith * Note that we can assume that the bufq on the controller is empty, as we won't 49451974Smsmith * allow shutdown if any device is open. 49551974Smsmith */ 49651974Smsmithint 49751974Smsmithamr_shutdown(device_t dev) 49851974Smsmith{ 49951974Smsmith struct amr_softc *sc = device_get_softc(dev); 50051974Smsmith struct amrd_softc *ad; 50151974Smsmith int i, s, error; 50251974Smsmith 50351974Smsmith debug("called"); 50451974Smsmith 50551974Smsmith s = splbio(); 50651974Smsmith error = 0; 50751974Smsmith 50851974Smsmith /* assume we're going to shut down */ 50951974Smsmith sc->amr_state |= AMR_STATE_SHUTDOWN; 51051974Smsmith for (i = 0; i < AMR_MAXLD; i++) { 51151974Smsmith if (sc->amr_drive[i].al_disk != 0) { 51251974Smsmith ad = device_get_softc(sc->amr_drive[i].al_disk); 51351974Smsmith if (ad->amrd_flags & AMRD_OPEN) { /* drive is mounted, abort shutdown */ 51451974Smsmith sc->amr_state &= ~AMR_STATE_SHUTDOWN; 51551974Smsmith device_printf(sc->amr_drive[i].al_disk, "still open, can't shutdown\n"); 51651974Smsmith error = EBUSY; 51751974Smsmith goto out; 51851974Smsmith } 51951974Smsmith } 52051974Smsmith } 52151974Smsmith 52251974Smsmith /* flush controller */ 52351974Smsmith device_printf(sc->amr_dev, "flushing cache..."); 52451974Smsmith if (amr_flush(sc)) { 52551974Smsmith printf("failed\n"); 52651974Smsmith } else { 52751974Smsmith printf("done\n"); 52851974Smsmith } 52951974Smsmith 53051974Smsmith /* delete all our child devices */ 53151974Smsmith for (i = 0; i < AMR_MAXLD; i++) { 53251974Smsmith if (sc->amr_drive[i].al_disk != 0) { 53351974Smsmith if ((error = device_delete_child(sc->amr_dev, sc->amr_drive[i].al_disk)) != 0) 53451974Smsmith goto out; 53551974Smsmith sc->amr_drive[i].al_disk = 0; 53651974Smsmith } 53751974Smsmith } 53851974Smsmith bus_generic_detach(sc->amr_dev); 53951974Smsmith 54051974Smsmith out: 54151974Smsmith splx(s); 54251974Smsmith return(error); 54351974Smsmith} 54451974Smsmith 54551974Smsmith/******************************************************************************** 54651974Smsmith * Bring the controller to a quiescent state, ready for system suspend. 54751974Smsmith */ 54851974Smsmithint 54951974Smsmithamr_suspend(device_t dev) 55051974Smsmith{ 55151974Smsmith struct amr_softc *sc = device_get_softc(dev); 55251974Smsmith 55351974Smsmith debug("called"); 55451974Smsmith 55551974Smsmith sc->amr_state |= AMR_STATE_SUSPEND; 55651974Smsmith 55751974Smsmith /* flush controller */ 55851974Smsmith device_printf(sc->amr_dev, "flushing cache..."); 55951974Smsmith printf("%s\n", amr_flush(sc) ? "failed" : "done"); 56051974Smsmith 56151974Smsmith return(0); 56251974Smsmith} 56351974Smsmith 56451974Smsmith/******************************************************************************** 56551974Smsmith * Bring the controller back to a state ready for operation. 56651974Smsmith */ 56751974Smsmithint 56851974Smsmithamr_resume(device_t dev) 56951974Smsmith{ 57051974Smsmith struct amr_softc *sc = device_get_softc(dev); 57151974Smsmith 57251974Smsmith debug("called"); 57351974Smsmith 57451974Smsmith sc->amr_state &= ~AMR_STATE_SUSPEND; 57551974Smsmith 57651974Smsmith return(0); 57751974Smsmith} 57851974Smsmith 57951974Smsmith/******************************************************************************* 58051974Smsmith * Take an interrupt, or be poked by other code to look for interrupt-worthy 58151974Smsmith * status. 58251974Smsmith */ 58351974Smsmithvoid 58451974Smsmithamr_intr(void *arg) 58551974Smsmith{ 58651974Smsmith struct amr_softc *sc = (struct amr_softc *)arg; 58751974Smsmith int worked; 58851974Smsmith 58951974Smsmith debug("called on %p", sc); 59051974Smsmith 59151974Smsmith /* spin collecting finished commands, process them if we find anything */ 59251974Smsmith worked = 0; 59351974Smsmith while (amr_done(sc)) 59451974Smsmith worked = 1; 59551974Smsmith if (worked) 59651974Smsmith amr_complete(sc); 59751974Smsmith}; 59851974Smsmith 59951974Smsmith/******************************************************************************* 60051974Smsmith * Receive a buf structure from a child device and queue it on a particular 60151974Smsmith * disk resource, then poke the disk resource to start as much work as it can. 60251974Smsmith */ 60351974Smsmithint 60451974Smsmithamr_submit_buf(struct amr_softc *sc, struct buf *bp) 60551974Smsmith{ 60652543Smsmith int s; 60752543Smsmith 60851974Smsmith debug("called"); 60951974Smsmith 61052543Smsmith s = splbio(); 61151974Smsmith bufq_insert_tail(&sc->amr_bufq, bp); 61252543Smsmith splx(s); 61351974Smsmith sc->amr_waitbufs++; 61451974Smsmith amr_startio(sc); 61551974Smsmith return(0); 61651974Smsmith} 61751974Smsmith 61851974Smsmith/******************************************************************************** 61951974Smsmith * Accept an open operation on the control device. 62051974Smsmith */ 62151974Smsmithint 62251974Smsmithamr_open(dev_t dev, int flags, int fmt, struct proc *p) 62351974Smsmith{ 62451974Smsmith int unit = minor(dev); 62551974Smsmith struct amr_softc *sc = devclass_get_softc(amr_devclass, unit); 62651974Smsmith 62751974Smsmith sc->amr_state |= AMR_STATE_OPEN; 62851974Smsmith return(0); 62951974Smsmith} 63051974Smsmith 63151974Smsmith/******************************************************************************** 63251974Smsmith * Accept the last close on the control device. 63351974Smsmith */ 63451974Smsmithint 63551974Smsmithamr_close(dev_t dev, int flags, int fmt, struct proc *p) 63651974Smsmith{ 63751974Smsmith int unit = minor(dev); 63851974Smsmith struct amr_softc *sc = devclass_get_softc(amr_devclass, unit); 63951974Smsmith 64051974Smsmith sc->amr_state &= ~AMR_STATE_OPEN; 64151974Smsmith return (0); 64251974Smsmith} 64351974Smsmith 64451974Smsmith/******************************************************************************** 64551974Smsmith * Handle controller-specific control operations. 64651974Smsmith */ 64751974Smsmithint 64851974Smsmithamr_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p) 64951974Smsmith{ 65051974Smsmith 65151974Smsmith switch(cmd) { 65251974Smsmith default: 65351974Smsmith return(ENOTTY); 65451974Smsmith } 65551974Smsmith} 65651974Smsmith 65751974Smsmith/******************************************************************************** 65851974Smsmith * Handle operations requested by a drive connected to this controller. 65951974Smsmith */ 66051974Smsmithint 66151974Smsmithamr_submit_ioctl(struct amr_softc *sc, struct amr_logdrive *drive, u_long cmd, 66251974Smsmith caddr_t addr, int32_t flag, struct proc *p) 66351974Smsmith{ 66451974Smsmith return(ENOTTY); 66551974Smsmith} 66651974Smsmith 66751974Smsmith/******************************************************************************** 66851974Smsmith ******************************************************************************** 66951974Smsmith Command Wrappers 67051974Smsmith ******************************************************************************** 67151974Smsmith ********************************************************************************/ 67251974Smsmith 67351974Smsmith/******************************************************************************** 67451974Smsmith * Interrogate the controller for the operational parameters we require. 67551974Smsmith */ 67651974Smsmithstatic int 67751974Smsmithamr_query_controller(struct amr_softc *sc) 67851974Smsmith{ 67951974Smsmith void *buf; 68051974Smsmith int i; 68151974Smsmith 68251974Smsmith /* try to issue an ENQUIRY3 command */ 68351974Smsmith if ((buf = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 68451974Smsmith AMR_CONFIG_ENQ3_SOLICITED_FULL)) == NULL) { 68551974Smsmith 68651974Smsmith struct amr_enquiry *ae; 68751974Smsmith 68851974Smsmith /* failed, try the old ENQUIRY command */ 68951974Smsmith if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 69051974Smsmith device_printf(sc->amr_dev, "could not obtain configuration data from controller\n"); 69151974Smsmith return(1); 69251974Smsmith } 69351974Smsmith /* first-time enquiry? */ 69451974Smsmith if (sc->amr_maxdrives == 0) { 69551974Smsmith device_printf(sc->amr_dev, "firmware %.4s bios %.4s %dMB memory, chipset %x\n", 69651974Smsmith ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 69751974Smsmith ae->ae_adapter.aa_memorysize, ae->ae_adapter.aa_chipsetvalue); 69851974Smsmith } 69951974Smsmith sc->amr_maxdrives = 8; 70051974Smsmith sc->amr_maxio = ae->ae_adapter.aa_maxio; 70151974Smsmith for (i = 0; i < ae->ae_ldrv.al_numdrives; i++) { 70251974Smsmith sc->amr_drive[i].al_size = ae->ae_ldrv.al_size[i]; 70351974Smsmith sc->amr_drive[i].al_state = ae->ae_ldrv.al_state[i]; 70451974Smsmith sc->amr_drive[i].al_properties = ae->ae_ldrv.al_properties[i]; 70551974Smsmith debug(" drive %d: %d state %x properties %x\n", i, sc->amr_drive[i].al_size, 70651974Smsmith sc->amr_drive[i].al_state, sc->amr_drive[i].al_properties); 70751974Smsmith } 70851974Smsmith for (; i < AMR_MAXLD; i++) 70951974Smsmith sc->amr_drive[i].al_size = 0xffffffff; 71051974Smsmith free(ae, M_DEVBUF); 71151974Smsmith } else { 71251974Smsmith free(buf, M_DEVBUF); 71351974Smsmith sc->amr_maxdrives = 40; 71451974Smsmith 71551974Smsmith /* get static product info */ 71651974Smsmith if ((buf = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODINFO, 0)) == NULL) { 71751974Smsmith device_printf(sc->amr_dev, "controller supports 40ld but CONFIG_PRODINFO failed\n"); 71851974Smsmith return(1); 71951974Smsmith } 72051974Smsmith free(buf, M_DEVBUF); 72151974Smsmith device_printf(sc->amr_dev, "40LD firmware unsupported; send controller to msmith@freebsd.org\n"); 72251974Smsmith return(1); 72351974Smsmith } 72451974Smsmith return(0); 72551974Smsmith} 72651974Smsmith 72751974Smsmith/******************************************************************************** 72851974Smsmith * Run a generic enquiry-style command. 72951974Smsmith */ 73051974Smsmithstatic void * 73151974Smsmithamr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 73251974Smsmith{ 73351974Smsmith struct amr_command *ac; 73451974Smsmith void *result; 73551974Smsmith u_int8_t *mbox; 73651974Smsmith int error; 73751974Smsmith 73851974Smsmith debug("called"); 73951974Smsmith 74051974Smsmith error = 1; 74151974Smsmith result = NULL; 74251974Smsmith 74351974Smsmith /* get ourselves a command buffer */ 74451974Smsmith if ((ac = amr_alloccmd(sc)) == NULL) 74551974Smsmith goto out; 74651974Smsmith /* allocate the response structure */ 74751974Smsmith if ((result = malloc(bufsize, M_DEVBUF, M_NOWAIT)) == NULL) 74851974Smsmith goto out; 74951974Smsmith /* get a command slot */ 75051974Smsmith ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 75151974Smsmith if (amr_getslot(ac)) 75251974Smsmith goto out; 75351974Smsmith 75451974Smsmith /* map the command so the controller can see it */ 75551974Smsmith ac->ac_data = result; 75651974Smsmith ac->ac_length = bufsize; 75751974Smsmith amr_mapcmd(ac); 75851974Smsmith 75951974Smsmith /* build the command proper */ 76051974Smsmith mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 76151974Smsmith mbox[0] = cmd; 76251974Smsmith mbox[2] = cmdsub; 76351974Smsmith mbox[3] = cmdqual; 76451974Smsmith ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 76551974Smsmith 76651974Smsmith /* run the command in polled/wait mode as suits the current mode */ 76751974Smsmith if ((sc->amr_state & AMR_STATE_INTEN) ? amr_wait_command(ac) : amr_poll_command(ac)) 76851974Smsmith goto out; 76951974Smsmith error = ac->ac_status; 77051974Smsmith 77151974Smsmith out: 77251974Smsmith if (ac != NULL) 77351974Smsmith amr_releasecmd(ac); 77451974Smsmith if ((error != 0) && (result != NULL)) { 77551974Smsmith free(result, M_DEVBUF); 77651974Smsmith result = NULL; 77751974Smsmith } 77851974Smsmith return(result); 77951974Smsmith} 78051974Smsmith 78151974Smsmith/******************************************************************************** 78251974Smsmith * Flush the controller's internal cache, return status. 78351974Smsmith */ 78451974Smsmithstatic int 78551974Smsmithamr_flush(struct amr_softc *sc) 78651974Smsmith{ 78751974Smsmith struct amr_command *ac; 78851974Smsmith int error; 78951974Smsmith 79051974Smsmith /* get ourselves a command buffer */ 79151974Smsmith error = 1; 79251974Smsmith if ((ac = amr_alloccmd(sc)) == NULL) 79351974Smsmith goto out; 79451974Smsmith /* get a command slot */ 79551974Smsmith ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 79651974Smsmith if (amr_getslot(ac)) 79751974Smsmith goto out; 79851974Smsmith 79951974Smsmith /* build the command proper */ 80051974Smsmith ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 80151974Smsmith 80251974Smsmith /* run the command in polled/wait mode as suits the current mode */ 80351974Smsmith if ((sc->amr_state & AMR_STATE_INTEN) ? amr_wait_command(ac) : amr_poll_command(ac)) 80451974Smsmith goto out; 80551974Smsmith error = ac->ac_status; 80651974Smsmith 80751974Smsmith out: 80851974Smsmith if (ac != NULL) 80951974Smsmith amr_releasecmd(ac); 81051974Smsmith return(error); 81151974Smsmith} 81251974Smsmith 81351974Smsmith/******************************************************************************** 81451974Smsmith * Pull as much work off the softc's work queue as possible and give it to the 81551974Smsmith * controller. Leave a couple of slots free for emergencies. 81651974Smsmith * 81752543Smsmith * We avoid running at splbio() whenever possible. 81851974Smsmith */ 81951974Smsmithstatic void 82051974Smsmithamr_startio(struct amr_softc *sc) 82151974Smsmith{ 82251974Smsmith struct amr_command *ac; 82351974Smsmith struct amrd_softc *amrd; 82451974Smsmith struct buf *bp; 82551974Smsmith int blkcount; 82651974Smsmith int driveno; 82751974Smsmith int cmd; 82852543Smsmith int s; 82951974Smsmith 83051974Smsmith /* spin until something prevents us from doing any work */ 83152543Smsmith s = splbio(); 83251974Smsmith for (;;) { 83351974Smsmith 83451974Smsmith /* see if there's work to be done */ 83551974Smsmith if ((bp = bufq_first(&sc->amr_bufq)) == NULL) 83651974Smsmith break; 83751974Smsmith /* get a command */ 83851974Smsmith if ((ac = amr_alloccmd(sc)) == NULL) 83951974Smsmith break; 84051974Smsmith /* get a slot for the command */ 84151974Smsmith if (amr_getslot(ac) != 0) { 84251974Smsmith amr_releasecmd(ac); 84351974Smsmith break; 84451974Smsmith } 84551974Smsmith /* get the buf containing our work */ 84651974Smsmith bufq_remove(&sc->amr_bufq, bp); 84751974Smsmith sc->amr_waitbufs--; 84852543Smsmith splx(s); 84951974Smsmith 85051974Smsmith /* connect the buf to the command */ 85151974Smsmith ac->ac_complete = amr_completeio; 85251974Smsmith ac->ac_private = bp; 85351974Smsmith ac->ac_data = bp->b_data; 85451974Smsmith ac->ac_length = bp->b_bcount; 85551974Smsmith if (bp->b_flags & B_READ) { 85651974Smsmith ac->ac_flags |= AMR_CMD_DATAIN; 85751974Smsmith cmd = AMR_CMD_LREAD; 85851974Smsmith } else { 85951974Smsmith ac->ac_flags |= AMR_CMD_DATAOUT; 86051974Smsmith cmd = AMR_CMD_LWRITE; 86151974Smsmith } 86251974Smsmith 86351974Smsmith /* map the command so the controller can work with it */ 86451974Smsmith amr_mapcmd(ac); 86551974Smsmith 86651974Smsmith /* build a suitable I/O command (assumes 512-byte rounded transfers) */ 86751974Smsmith amrd = (struct amrd_softc *)bp->b_driver1; 86851974Smsmith driveno = amrd->amrd_drive - &sc->amr_drive[0]; 86951974Smsmith blkcount = bp->b_bcount / AMR_BLKSIZE; 87051974Smsmith 87152439Smsmith if ((bp->b_pblkno + blkcount) > sc->amr_drive[driveno].al_size) 87251974Smsmith device_printf(sc->amr_dev, "I/O beyond end of unit (%u,%d > %u)\n", 87352439Smsmith bp->b_pblkno, blkcount, sc->amr_drive[driveno].al_size); 87451974Smsmith 87551974Smsmith /* 87651974Smsmith * Build the I/O command. 87751974Smsmith */ 87851974Smsmith ac->ac_mailbox.mb_command = cmd; 87951974Smsmith ac->ac_mailbox.mb_blkcount = blkcount; 88052439Smsmith ac->ac_mailbox.mb_lba = bp->b_pblkno; 88151974Smsmith ac->ac_mailbox.mb_physaddr = ac->ac_sgphys; 88251974Smsmith ac->ac_mailbox.mb_drive = driveno; 88351974Smsmith ac->ac_mailbox.mb_nsgelem = ac->ac_nsgent; 88451974Smsmith 88551974Smsmith /* try to give command to controller */ 88651974Smsmith if (amr_start(ac) != 0) { 88751974Smsmith /* fail the command */ 88851974Smsmith ac->ac_status = AMR_STATUS_WEDGED; 88951974Smsmith amr_completeio(ac); 89051974Smsmith } 89152543Smsmith s = splbio(); 89251974Smsmith } 89352543Smsmith splx(s); 89451974Smsmith} 89551974Smsmith 89651974Smsmith/******************************************************************************** 89751974Smsmith * Handle completion of an I/O command. 89851974Smsmith */ 89951974Smsmithstatic void 90051974Smsmithamr_completeio(struct amr_command *ac) 90151974Smsmith{ 90251974Smsmith struct amr_softc *sc = ac->ac_sc; 90351974Smsmith struct buf *bp = (struct buf *)ac->ac_private; 90451974Smsmith 90551974Smsmith if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 90651974Smsmith bp->b_error = EIO; 90751974Smsmith bp->b_flags |= B_ERROR; 90851974Smsmith 90951974Smsmith switch(ac->ac_status) { 91051974Smsmith /* XXX need more information on I/O error reasons */ 91151974Smsmith default: 91251974Smsmith device_printf(sc->amr_dev, "I/O error - %x\n", ac->ac_status); 91351974Smsmith amr_printcommand(ac); 91451974Smsmith break; 91551974Smsmith } 91651974Smsmith } 91751974Smsmith amr_releasecmd(ac); 91851974Smsmith amrd_intr(bp); 91951974Smsmith} 92051974Smsmith 92151974Smsmith/******************************************************************************** 92251974Smsmith ******************************************************************************** 92351974Smsmith Command Processing 92451974Smsmith ******************************************************************************** 92551974Smsmith ********************************************************************************/ 92651974Smsmith 92751974Smsmith/******************************************************************************** 92851974Smsmith * Take a command, submit it to the controller and sleep until it completes 92951974Smsmith * or fails. Interrupts must be enabled, returns nonzero on error. 93051974Smsmith */ 93151974Smsmithstatic int 93251974Smsmithamr_wait_command(struct amr_command *ac) 93351974Smsmith{ 93451974Smsmith struct amr_softc *sc = ac->ac_sc; 93551974Smsmith int error, count; 93651974Smsmith 93751974Smsmith debug("called"); 93851974Smsmith 93951974Smsmith ac->ac_complete = NULL; 94051974Smsmith ac->ac_private = ac; 94151974Smsmith if ((error = amr_start(ac)) != 0) 94251974Smsmith return(error); 94351974Smsmith 94451974Smsmith count = 0; 94551974Smsmith /* XXX better timeout? */ 94651974Smsmith while ((ac->ac_status == AMR_STATUS_BUSY) && (count < 30)) { 94751974Smsmith tsleep(ac->ac_private, PRIBIO | PCATCH, "amrwcmd", hz); 94851974Smsmith } 94951974Smsmith 95051974Smsmith if (ac->ac_status != 0) { 95151974Smsmith device_printf(sc->amr_dev, "I/O error 0x%x\n", ac->ac_status); 95251974Smsmith return(EIO); 95351974Smsmith } 95451974Smsmith return(0); 95551974Smsmith} 95651974Smsmith 95751974Smsmith/******************************************************************************** 95851974Smsmith * Take a command, submit it to the controller and busy-wait for it to return. 95951974Smsmith * Returns nonzero on error. Can be safely called with interrupts enabled. 96051974Smsmith */ 96151974Smsmithstatic int 96251974Smsmithamr_poll_command(struct amr_command *ac) 96351974Smsmith{ 96451974Smsmith struct amr_softc *sc = ac->ac_sc; 96551974Smsmith int error, count, s; 96651974Smsmith 96751974Smsmith debug("called"); 96851974Smsmith 96951974Smsmith ac->ac_complete = NULL; 97051974Smsmith ac->ac_private = NULL; 97151974Smsmith if ((error = amr_start(ac)) != 0) 97251974Smsmith return(error); 97351974Smsmith 97451974Smsmith count = 0; 97551974Smsmith do { 97651974Smsmith /* 97751974Smsmith * Poll for completion, although the interrupt handler may beat us to it. 97851974Smsmith * Note that the timeout here is somewhat arbitrary. 97951974Smsmith */ 98051974Smsmith amr_done(sc); 98151974Smsmith } while ((ac->ac_status == AMR_STATUS_BUSY) && (count++ < 100000)); 98251974Smsmith s = splbio(); 98351974Smsmith if (ac->ac_status != AMR_STATUS_BUSY) { 98452543Smsmith TAILQ_REMOVE(&sc->amr_work, ac, ac_link); 98552543Smsmith sc->amr_workcount--; 98651974Smsmith error = 0; 98751974Smsmith } else { 98851974Smsmith /* take the command out of the busy list, mark slot as bogus */ 98951974Smsmith sc->amr_busycmd[ac->ac_slot] = (struct amr_command *)sc; 99051974Smsmith error = EIO; 99151974Smsmith device_printf(sc->amr_dev, "I/O error 0x%x\n", ac->ac_status); 99251974Smsmith } 99351974Smsmith splx(s); 99451974Smsmith return(error); 99551974Smsmith} 99651974Smsmith 99751974Smsmith/******************************************************************************** 99851974Smsmith * Get a free command slot. 99951974Smsmith */ 100051974Smsmithstatic int 100151974Smsmithamr_getslot(struct amr_command *ac) 100251974Smsmith{ 100351974Smsmith struct amr_softc *sc = ac->ac_sc; 100451974Smsmith int s, slot, limit; 100551974Smsmith 100651974Smsmith debug("called"); 100751974Smsmith 100851974Smsmith /* enforce slot usage limit */ 100951974Smsmith limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 101051974Smsmith if (sc->amr_busycmdcount > limit) 101151974Smsmith return(EBUSY); 101251974Smsmith 101351974Smsmith /* 101451974Smsmith * Allocate a slot 101551974Smsmith */ 101651974Smsmith s = splbio(); 101751974Smsmith for (slot = 0; slot < sc->amr_maxio; slot++) { 101851974Smsmith if (sc->amr_busycmd[slot] == NULL) 101951974Smsmith break; 102051974Smsmith } 102151974Smsmith if (slot < sc->amr_maxio) { 102251974Smsmith sc->amr_busycmdcount++; 102351974Smsmith sc->amr_busycmd[slot] = ac; 102451974Smsmith } 102551974Smsmith splx(s); 102651974Smsmith 102751974Smsmith /* out of slots? */ 102851974Smsmith if (slot >= sc->amr_maxio) 102951974Smsmith return(EBUSY); 103051974Smsmith 103151974Smsmith ac->ac_slot = slot; 103251974Smsmith return(0); 103351974Smsmith} 103451974Smsmith 103551974Smsmith/******************************************************************************** 103651974Smsmith * Map/unmap (ac)'s data in the controller's addressable space. 103751974Smsmith */ 103851974Smsmithstatic void 103951974Smsmithamr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 104051974Smsmith{ 104151974Smsmith struct amr_command *ac = (struct amr_command *)arg; 104251974Smsmith struct amr_softc *sc = ac->ac_sc; 104351974Smsmith struct amr_sgentry *sg; 104451974Smsmith int i; 104551974Smsmith 104651974Smsmith debug("called"); 104751974Smsmith 104851974Smsmith /* get base address of s/g table */ 104951974Smsmith sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 105051974Smsmith 105151974Smsmith /* save s/g table information in command */ 105251974Smsmith ac->ac_nsgent = nsegments; 105351974Smsmith ac->ac_sgphys = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 105451974Smsmith ac->ac_dataphys = segs[0].ds_addr; 105551974Smsmith 105651974Smsmith /* populate s/g table */ 105751974Smsmith for (i = 0; i < nsegments; i++, sg++) { 105851974Smsmith sg->sg_addr = segs[i].ds_addr; 105951974Smsmith sg->sg_count = segs[i].ds_len; 106051974Smsmith } 106151974Smsmith} 106251974Smsmith 106351974Smsmithstatic void 106451974Smsmithamr_mapcmd(struct amr_command *ac) 106551974Smsmith{ 106651974Smsmith struct amr_softc *sc = ac->ac_sc; 106751974Smsmith 106851974Smsmith debug("called"); 106951974Smsmith 107051974Smsmith /* if the command involves data at all */ 107151974Smsmith if (ac->ac_data != NULL) { 107251974Smsmith 107351974Smsmith /* map the data buffer into bus space and build the s/g list */ 107451974Smsmith bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 107551974Smsmith amr_setup_dmamap, ac, 0); 107651974Smsmith if (ac->ac_flags & AMR_CMD_DATAIN) 107751974Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 107851974Smsmith if (ac->ac_flags & AMR_CMD_DATAOUT) 107951974Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 108051974Smsmith } 108151974Smsmith} 108251974Smsmith 108351974Smsmithstatic void 108451974Smsmithamr_unmapcmd(struct amr_command *ac) 108551974Smsmith{ 108651974Smsmith struct amr_softc *sc = ac->ac_sc; 108751974Smsmith 108851974Smsmith debug("called"); 108951974Smsmith 109051974Smsmith /* if the command involved data at all */ 109151974Smsmith if (ac->ac_data != NULL) { 109251974Smsmith 109351974Smsmith if (ac->ac_flags & AMR_CMD_DATAIN) 109451974Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 109551974Smsmith if (ac->ac_flags & AMR_CMD_DATAOUT) 109651974Smsmith bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 109751974Smsmith 109851974Smsmith bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 109951974Smsmith } 110051974Smsmith} 110151974Smsmith 110251974Smsmith/******************************************************************************** 110351974Smsmith * Take a command and give it to the controller. Take care of any completed 110451974Smsmith * commands we encouter while waiting. 110551974Smsmith */ 110651974Smsmithstatic int 110751974Smsmithamr_start(struct amr_command *ac) 110851974Smsmith{ 110951974Smsmith struct amr_softc *sc = ac->ac_sc; 111051974Smsmith int worked, done, s, i; 111151974Smsmith 111251974Smsmith debug("called"); 111351974Smsmith 111451974Smsmith /* 111551974Smsmith * Save the slot number so that we can locate this command when complete. 111651974Smsmith * Note that ident = 0 seems to be special, so we don't use it. 111751974Smsmith */ 111851974Smsmith ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 111951974Smsmith 112051974Smsmith /* set the busy flag when we copy the mailbox in */ 112151974Smsmith ac->ac_mailbox.mb_busy = 1; 112251974Smsmith 112351974Smsmith /* set impossible status so that a woken sleeper can tell the command is busy */ 112451974Smsmith ac->ac_status = AMR_STATUS_BUSY; 112551974Smsmith 112651974Smsmith /* spin waiting for the mailbox */ 112751974Smsmith debug("wait for mailbox"); 112851974Smsmith for (i = 10000, done = 0, worked = 0; (i > 0) && !done; i--) { 112951974Smsmith s = splbio(); 113051974Smsmith 113151974Smsmith /* is the mailbox free? */ 113251974Smsmith if (sc->amr_mailbox->mb_busy == 0) { 113351974Smsmith debug("got mailbox"); 113451974Smsmith sc->amr_mailbox64->mb64_segment = 0; 113551974Smsmith bcopy(&ac->ac_mailbox, sc->amr_mailbox, AMR_MBOX_CMDSIZE); 113651974Smsmith sc->amr_submit_command(sc); 113751974Smsmith done = 1; 113852543Smsmith sc->amr_workcount++; 113952543Smsmith TAILQ_INSERT_TAIL(&sc->amr_work, ac, ac_link); 114051974Smsmith 114151974Smsmith /* not free, try to clean up while we wait */ 114251974Smsmith } else { 114351974Smsmith debug("busy flag %x\n", sc->amr_mailbox->mb_busy); 114451974Smsmith worked = amr_done(sc); 114551974Smsmith } 114651974Smsmith splx(s); 114751974Smsmith } 114851974Smsmith 114951974Smsmith /* do completion processing if we picked anything up */ 115051974Smsmith if (worked) 115151974Smsmith amr_complete(sc); 115251974Smsmith 115351974Smsmith /* command is enqueued? */ 115451974Smsmith if (done) { 115551974Smsmith ac->ac_stamp = time_second; 115651974Smsmith debug("posted command"); 115751974Smsmith return(0); 115851974Smsmith } 115951974Smsmith 116051974Smsmith /* 116151974Smsmith * The controller wouldn't take the command. Revoke the slot 116251974Smsmith * that the command was given and return with a bad status. 116351974Smsmith */ 116451974Smsmith sc->amr_busycmd[ac->ac_slot] = NULL; 116551974Smsmith device_printf(sc->amr_dev, "controller wedged (not taking commands)\n"); 116651974Smsmith ac->ac_status = AMR_STATUS_WEDGED; 116751974Smsmith return(EIO); 116851974Smsmith} 116951974Smsmith 117051974Smsmith/******************************************************************************** 117151974Smsmith * Extract one or more completed commands from the controller (sc) 117251974Smsmith * 117352543Smsmith * Returns nonzero if any commands on the work queue were marked as completed. 117451974Smsmith */ 117551974Smsmithstatic int 117651974Smsmithamr_done(struct amr_softc *sc) 117751974Smsmith{ 117851974Smsmith struct amr_command *ac; 117951974Smsmith struct amr_mailbox mbox; 118052543Smsmith int i, idx, result; 118151974Smsmith 118251974Smsmith debug("called"); 118351974Smsmith 118451974Smsmith /* See if there's anything for us to do */ 118551974Smsmith result = 0; 118651974Smsmith if (sc->amr_get_work(sc, &mbox)) { 118751974Smsmith /* iterate over completed commands */ 118851974Smsmith for (i = 0; i < mbox.mb_nstatus; i++) { 118951974Smsmith /* get pointer to busy command */ 119051974Smsmith idx = mbox.mb_completed[i] - 1; 119151974Smsmith ac = sc->amr_busycmd[idx]; 119251974Smsmith 119351974Smsmith /* really a busy command? */ 119451974Smsmith if (ac != NULL) { 119551974Smsmith 119651974Smsmith /* pull the command from the busy index */ 119751974Smsmith sc->amr_busycmd[idx] = NULL; 119851974Smsmith sc->amr_busycmdcount--; 119951974Smsmith 120052543Smsmith /* unmap data buffer */ 120152543Smsmith amr_unmapcmd(ac); 120252543Smsmith 120351974Smsmith /* aborted command? */ 120451974Smsmith if (ac == (struct amr_command *)sc) { 120551974Smsmith device_printf(sc->amr_dev, "aborted command completed (%d)\n", idx); 120651974Smsmith ac = NULL; 120752543Smsmith 120852543Smsmith /* completed normally, save status */ 120951974Smsmith } else { 121051974Smsmith ac->ac_status = mbox.mb_status; 121151974Smsmith debug("completed command with status %x", mbox.mb_status); 121251974Smsmith } 121351974Smsmith result = 1; 121451974Smsmith } 121551974Smsmith } 121651974Smsmith } 121751974Smsmith return(result); 121851974Smsmith} 121951974Smsmith 122051974Smsmith/******************************************************************************** 122151974Smsmith * Do completion processing on done commands on (sc) 122251974Smsmith */ 122351974Smsmithstatic void 122451974Smsmithamr_complete(struct amr_softc *sc) 122551974Smsmith{ 122651974Smsmith struct amr_command *ac, *nc; 122751974Smsmith int s, count; 122851974Smsmith 122951974Smsmith debug("called"); 123051974Smsmith 123151974Smsmith count = 0; 123251974Smsmith 123351974Smsmith s = splbio(); 123452543Smsmith ac = TAILQ_FIRST(&sc->amr_work); 123551974Smsmith while (ac != NULL) { 123651974Smsmith nc = TAILQ_NEXT(ac, ac_link); 123751974Smsmith 123852543Smsmith /* Skip if command is still active */ 123952543Smsmith if (ac->ac_status != AMR_STATUS_BUSY) { 124051974Smsmith 124151974Smsmith /* 124252543Smsmith * Is there a completion handler? 124351974Smsmith */ 124452543Smsmith if (ac->ac_complete != NULL) { 124551974Smsmith 124652543Smsmith /* remove and give to completion handler */ 124752543Smsmith TAILQ_REMOVE(&sc->amr_work, ac, ac_link); 124852543Smsmith sc->amr_workcount--; 124952543Smsmith ac->ac_complete(ac); 125052543Smsmith 125152543Smsmith /* 125252543Smsmith * Is someone sleeping on this one? 125352543Smsmith */ 125452543Smsmith } else if (ac->ac_private != NULL) { 125551974Smsmith 125652543Smsmith /* remove and wake up */ 125752543Smsmith TAILQ_REMOVE(&sc->amr_work, ac, ac_link); 125852543Smsmith sc->amr_workcount--; 125952543Smsmith wakeup_one(ac->ac_private); 126052543Smsmith 126152543Smsmith /* 126252543Smsmith * Leave it for a polling caller. 126352543Smsmith */ 126452543Smsmith } else { 126552543Smsmith } 126651974Smsmith } 126751974Smsmith ac = nc; 126851974Smsmith } 126951974Smsmith splx(s); 127051974Smsmith 127151974Smsmith /* queue more work if we can */ 127251974Smsmith amr_startio(sc); 127351974Smsmith} 127451974Smsmith 127551974Smsmith/******************************************************************************** 127651974Smsmith ******************************************************************************** 127751974Smsmith Command Buffer Management 127851974Smsmith ******************************************************************************** 127951974Smsmith ********************************************************************************/ 128051974Smsmith 128151974Smsmith/******************************************************************************** 128251974Smsmith * Get a new command buffer. 128351974Smsmith * 128451974Smsmith * This may return NULL in low-memory cases. 128551974Smsmith * 128651974Smsmith * Note that using malloc() is expensive (the command buffer is << 1 page) but 128751974Smsmith * necessary if we are to be a loadable module before the zone allocator is fixed. 128851974Smsmith * 128951974Smsmith * If possible, we recycle a command buffer that's been used before. 129051974Smsmith * 129151974Smsmith * XXX Note that command buffers are not cleaned out - it is the caller's 129251974Smsmith * responsibility to ensure that all required fields are filled in before 129351974Smsmith * using a buffer. 129451974Smsmith */ 129551974Smsmithstatic struct amr_command * 129651974Smsmithamr_alloccmd(struct amr_softc *sc) 129751974Smsmith{ 129851974Smsmith struct amr_command *ac; 129951974Smsmith int error; 130051974Smsmith int s; 130151974Smsmith 130251974Smsmith debug("called"); 130351974Smsmith 130451974Smsmith s = splbio(); 130551974Smsmith if ((ac = TAILQ_FIRST(&sc->amr_freecmds)) != NULL) 130651974Smsmith TAILQ_REMOVE(&sc->amr_freecmds, ac, ac_link); 130751974Smsmith splx(s); 130851974Smsmith 130951974Smsmith /* allocate a new command buffer? */ 131051974Smsmith if (ac == NULL) { 131151974Smsmith ac = (struct amr_command *)malloc(sizeof(*ac), M_DEVBUF, M_NOWAIT); 131251974Smsmith if (ac != NULL) { 131351974Smsmith bzero(ac, sizeof(*ac)); 131451974Smsmith ac->ac_sc = sc; 131551974Smsmith error = bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap); 131651974Smsmith if (error) { 131751974Smsmith free(ac, M_DEVBUF); 131851974Smsmith return(NULL); 131951974Smsmith } 132051974Smsmith } 132151974Smsmith } 132251974Smsmith bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 132351974Smsmith return(ac); 132451974Smsmith} 132551974Smsmith 132651974Smsmith/******************************************************************************** 132751974Smsmith * Release a command buffer for recycling. 132851974Smsmith * 132951974Smsmith * XXX It might be a good idea to limit the number of commands we save for reuse 133051974Smsmith * if it's shown that this list bloats out massively. 133151974Smsmith */ 133251974Smsmithstatic void 133351974Smsmithamr_releasecmd(struct amr_command *ac) 133451974Smsmith{ 133551974Smsmith int s; 133651974Smsmith 133751974Smsmith debug("called"); 133851974Smsmith 133951974Smsmith s = splbio(); 134051974Smsmith TAILQ_INSERT_HEAD(&ac->ac_sc->amr_freecmds, ac, ac_link); 134151974Smsmith splx(s); 134251974Smsmith} 134351974Smsmith 134451974Smsmith/******************************************************************************** 134551974Smsmith * Permanently discard a command buffer. 134651974Smsmith */ 134751974Smsmithstatic void 134851974Smsmithamr_freecmd(struct amr_command *ac) 134951974Smsmith{ 135051974Smsmith struct amr_softc *sc = ac->ac_sc; 135151974Smsmith 135251974Smsmith debug("called"); 135351974Smsmith 135451974Smsmith bus_dmamap_destroy(sc->amr_buffer_dmat, ac->ac_dmamap); 135551974Smsmith free(ac, M_DEVBUF); 135651974Smsmith} 135751974Smsmith 135851974Smsmith/******************************************************************************** 135951974Smsmith ******************************************************************************** 136051974Smsmith Interface-specific Shims 136151974Smsmith ******************************************************************************** 136251974Smsmith ********************************************************************************/ 136351974Smsmith 136451974Smsmith/******************************************************************************** 136551974Smsmith * Tell the controller that the mailbox contains a valid command 136651974Smsmith */ 136751974Smsmithstatic void 136851974Smsmithamr_quartz_submit_command(struct amr_softc *sc) 136951974Smsmith{ 137051974Smsmith debug("called"); 137151974Smsmith 137251974Smsmith sc->amr_mailbox->mb_poll = 0; 137351974Smsmith sc->amr_mailbox->mb_ack = 0; 137451974Smsmith /* XXX write barrier? */ 137551974Smsmith while(AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 137651974Smsmith ; /* XXX aiee! what if it dies? */ 137751974Smsmith AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 137851974Smsmith} 137951974Smsmith 138051974Smsmithstatic void 138151974Smsmithamr_std_submit_command(struct amr_softc *sc) 138251974Smsmith{ 138351974Smsmith debug("called"); 138451974Smsmith 138551974Smsmith /* XXX write barrier? */ 138651974Smsmith while (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 138751974Smsmith ; /* XXX aiee! what if it dies? */ 138851974Smsmith AMR_SPOST_COMMAND(sc); 138951974Smsmith} 139051974Smsmith 139151974Smsmith/******************************************************************************** 139251974Smsmith * Claim any work that the controller has completed; acknowledge completion, 139351974Smsmith * save details of the completion in (mbsave) 139451974Smsmith */ 139551974Smsmithstatic int 139651974Smsmithamr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 139751974Smsmith{ 139851974Smsmith int s, worked; 139951974Smsmith u_int32_t outd; 140051974Smsmith 140151974Smsmith debug("called"); 140251974Smsmith 140351974Smsmith worked = 0; 140451974Smsmith s = splbio(); 140551974Smsmith 140651974Smsmith /* work waiting for us? */ 140751974Smsmith if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 140851974Smsmith AMR_QPUT_ODB(sc, AMR_QODB_READY); 140951974Smsmith 141051974Smsmith /* save mailbox, which contains a list of completed commands */ 141151974Smsmith /* XXX read barrier? */ 141251974Smsmith bcopy(sc->amr_mailbox, mbsave, sizeof(*mbsave)); 141351974Smsmith 141451974Smsmith /* acknowledge that we have the commands */ 141551974Smsmith AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 141651974Smsmith while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 141751974Smsmith ; /* XXX aiee! what if it dies? */ 141851974Smsmith worked = 1; /* got some work */ 141951974Smsmith } 142051974Smsmith 142151974Smsmith splx(s); 142251974Smsmith return(worked); 142351974Smsmith} 142451974Smsmith 142551974Smsmithstatic int 142651974Smsmithamr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 142751974Smsmith{ 142851974Smsmith int s, worked; 142951974Smsmith u_int8_t istat; 143051974Smsmith 143151974Smsmith debug("called"); 143251974Smsmith 143351974Smsmith worked = 0; 143451974Smsmith s = splbio(); 143551974Smsmith 143651974Smsmith /* check for valid interrupt status */ 143751974Smsmith istat = AMR_SGET_ISTAT(sc); 143851974Smsmith if ((istat & AMR_SINTR_VALID) != 0) { 143951974Smsmith AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 144051974Smsmith 144151974Smsmith /* save mailbox, which contains a list of completed commands */ 144251974Smsmith /* XXX read barrier? */ 144351974Smsmith bcopy(sc->amr_mailbox, mbsave, sizeof(*mbsave)); 144451974Smsmith 144551974Smsmith AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 144651974Smsmith worked = 1; 144751974Smsmith } 144851974Smsmith 144951974Smsmith splx(s); 145051974Smsmith return(worked); 145151974Smsmith} 145251974Smsmith 145351974Smsmith/******************************************************************************** 145451974Smsmith * Notify the controller of the mailbox location. 145551974Smsmith */ 145651974Smsmithstatic void 145751974Smsmithamr_quartz_attach_mailbox(struct amr_softc *sc) 145851974Smsmith{ 145951974Smsmith /* Quartz is given the mailbox location when a command is submitted */ 146051974Smsmith} 146151974Smsmith 146251974Smsmithstatic void 146351974Smsmithamr_std_attach_mailbox(struct amr_softc *sc) 146451974Smsmith{ 146551974Smsmith 146651974Smsmith /* program the mailbox physical address */ 146751974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 146851974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 146951974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 147051974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 147151974Smsmith AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 147251974Smsmith 147351974Smsmith /* clear any outstanding interrupt and enable interrupts proper */ 147451974Smsmith AMR_SACK_INTERRUPT(sc); 147551974Smsmith AMR_SENABLE_INTR(sc); 147651974Smsmith} 147751974Smsmith 147851974Smsmith/******************************************************************************** 147951974Smsmith ******************************************************************************** 148051974Smsmith Debugging 148151974Smsmith ******************************************************************************** 148251974Smsmith ********************************************************************************/ 148351974Smsmith 148451974Smsmith/******************************************************************************** 148551974Smsmith * Print the command (ac) in human-readable format 148651974Smsmith */ 148751974Smsmithstatic void 148851974Smsmithamr_printcommand(struct amr_command *ac) 148951974Smsmith{ 149051974Smsmith struct amr_softc *sc = ac->ac_sc; 149151974Smsmith struct amr_sgentry *sg; 149251974Smsmith int i; 149351974Smsmith 149451974Smsmith device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 149551974Smsmith ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 149651974Smsmith device_printf(sc->amr_dev, "blkcount %d lba %d\n", 149751974Smsmith ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 149851974Smsmith device_printf(sc->amr_dev, "virtaddr %p length %d\n", ac->ac_data, ac->ac_length); 149951974Smsmith device_printf(sc->amr_dev, "physaddr %08x nsg %d\n", 150051974Smsmith ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 150151974Smsmith 150251974Smsmith /* get base address of s/g table */ 150351974Smsmith sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 150451974Smsmith for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 150551974Smsmith device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 150651974Smsmith} 1507