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Diffstat (limited to 'sys/dev/ciss/ciss.c')
| -rw-r--r-- | sys/dev/ciss/ciss.c | 4651 |
1 files changed, 4651 insertions, 0 deletions
diff --git a/sys/dev/ciss/ciss.c b/sys/dev/ciss/ciss.c new file mode 100644 index 0000000..b530de1 --- /dev/null +++ b/sys/dev/ciss/ciss.c @@ -0,0 +1,4651 @@ +/*- + * Copyright (c) 2001 Michael Smith + * Copyright (c) 2004 Paul Saab + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +/* + * Common Interface for SCSI-3 Support driver. + * + * CISS claims to provide a common interface between a generic SCSI + * transport and an intelligent host adapter. + * + * This driver supports CISS as defined in the document "CISS Command + * Interface for SCSI-3 Support Open Specification", Version 1.04, + * Valence Number 1, dated 20001127, produced by Compaq Computer + * Corporation. This document appears to be a hastily and somewhat + * arbitrarlily cut-down version of a larger (and probably even more + * chaotic and inconsistent) Compaq internal document. Various + * details were also gleaned from Compaq's "cciss" driver for Linux. + * + * We provide a shim layer between the CISS interface and CAM, + * offloading most of the queueing and being-a-disk chores onto CAM. + * Entry to the driver is via the PCI bus attachment (ciss_probe, + * ciss_attach, etc) and via the CAM interface (ciss_cam_action, + * ciss_cam_poll). The Compaq CISS adapters are, however, poor SCSI + * citizens and we have to fake up some responses to get reasonable + * behaviour out of them. In addition, the CISS command set is by no + * means adequate to support the functionality of a RAID controller, + * and thus the supported Compaq adapters utilise portions of the + * control protocol from earlier Compaq adapter families. + * + * Note that we only support the "simple" transport layer over PCI. + * This interface (ab)uses the I2O register set (specifically the post + * queues) to exchange commands with the adapter. Other interfaces + * are available, but we aren't supposed to know about them, and it is + * dubious whether they would provide major performance improvements + * except under extreme load. + * + * Currently the only supported CISS adapters are the Compaq Smart + * Array 5* series (5300, 5i, 532). Even with only three adapters, + * Compaq still manage to have interface variations. + * + * + * Thanks must go to Fred Harris and Darryl DeVinney at Compaq, as + * well as Paul Saab at Yahoo! for their assistance in making this + * driver happen. + * + * More thanks must go to John Cagle at HP for the countless hours + * spent making this driver "work" with the MSA* series storage + * enclosures. Without his help (and nagging), this driver could not + * be used with these enclosures. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/kernel.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/stat.h> +#include <sys/kthread.h> +#include <sys/queue.h> +#include <sys/sysctl.h> + +#include <cam/cam.h> +#include <cam/cam_ccb.h> +#include <cam/cam_periph.h> +#include <cam/cam_sim.h> +#include <cam/cam_xpt_sim.h> +#include <cam/scsi/scsi_all.h> +#include <cam/scsi/scsi_message.h> + +#include <machine/bus.h> +#include <machine/endian.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <dev/pci/pcireg.h> +#include <dev/pci/pcivar.h> + +#include <dev/ciss/cissreg.h> +#include <dev/ciss/cissio.h> +#include <dev/ciss/cissvar.h> + +static MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data", + "ciss internal data buffers"); + +/* pci interface */ +static int ciss_lookup(device_t dev); +static int ciss_probe(device_t dev); +static int ciss_attach(device_t dev); +static int ciss_detach(device_t dev); +static int ciss_shutdown(device_t dev); + +/* (de)initialisation functions, control wrappers */ +static int ciss_init_pci(struct ciss_softc *sc); +static int ciss_setup_msix(struct ciss_softc *sc); +static int ciss_init_perf(struct ciss_softc *sc); +static int ciss_wait_adapter(struct ciss_softc *sc); +static int ciss_flush_adapter(struct ciss_softc *sc); +static int ciss_init_requests(struct ciss_softc *sc); +static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, + int nseg, int error); +static int ciss_identify_adapter(struct ciss_softc *sc); +static int ciss_init_logical(struct ciss_softc *sc); +static int ciss_init_physical(struct ciss_softc *sc); +static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll); +static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld); +static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld); +static int ciss_update_config(struct ciss_softc *sc); +static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld); +static void ciss_init_sysctl(struct ciss_softc *sc); +static void ciss_soft_reset(struct ciss_softc *sc); +static void ciss_free(struct ciss_softc *sc); +static void ciss_spawn_notify_thread(struct ciss_softc *sc); +static void ciss_kill_notify_thread(struct ciss_softc *sc); + +/* request submission/completion */ +static int ciss_start(struct ciss_request *cr); +static void ciss_done(struct ciss_softc *sc, cr_qhead_t *qh); +static void ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh); +static void ciss_intr(void *arg); +static void ciss_perf_intr(void *arg); +static void ciss_perf_msi_intr(void *arg); +static void ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh); +static int _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func); +static int ciss_synch_request(struct ciss_request *cr, int timeout); +static int ciss_poll_request(struct ciss_request *cr, int timeout); +static int ciss_wait_request(struct ciss_request *cr, int timeout); +#if 0 +static int ciss_abort_request(struct ciss_request *cr); +#endif + +/* request queueing */ +static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp); +static void ciss_preen_command(struct ciss_request *cr); +static void ciss_release_request(struct ciss_request *cr); + +/* request helpers */ +static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, + int opcode, void **bufp, size_t bufsize); +static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc); + +/* DMA map/unmap */ +static int ciss_map_request(struct ciss_request *cr); +static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, + int nseg, int error); +static void ciss_unmap_request(struct ciss_request *cr); + +/* CAM interface */ +static int ciss_cam_init(struct ciss_softc *sc); +static void ciss_cam_rescan_target(struct ciss_softc *sc, + int bus, int target); +static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb); +static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); +static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio); +static void ciss_cam_poll(struct cam_sim *sim); +static void ciss_cam_complete(struct ciss_request *cr); +static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio); +static struct cam_periph *ciss_find_periph(struct ciss_softc *sc, + int bus, int target); +static int ciss_name_device(struct ciss_softc *sc, int bus, int target); + +/* periodic status monitoring */ +static void ciss_periodic(void *arg); +static void ciss_nop_complete(struct ciss_request *cr); +static void ciss_disable_adapter(struct ciss_softc *sc); +static void ciss_notify_event(struct ciss_softc *sc); +static void ciss_notify_complete(struct ciss_request *cr); +static int ciss_notify_abort(struct ciss_softc *sc); +static int ciss_notify_abort_bmic(struct ciss_softc *sc); +static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn); +static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn); +static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn); + +/* debugging output */ +static void ciss_print_request(struct ciss_request *cr); +static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld); +static const char *ciss_name_ldrive_status(int status); +static int ciss_decode_ldrive_status(int status); +static const char *ciss_name_ldrive_org(int org); +static const char *ciss_name_command_status(int status); + +/* + * PCI bus interface. + */ +static device_method_t ciss_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, ciss_probe), + DEVMETHOD(device_attach, ciss_attach), + DEVMETHOD(device_detach, ciss_detach), + DEVMETHOD(device_shutdown, ciss_shutdown), + { 0, 0 } +}; + +static driver_t ciss_pci_driver = { + "ciss", + ciss_methods, + sizeof(struct ciss_softc) +}; + +static devclass_t ciss_devclass; +DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0); +MODULE_DEPEND(ciss, cam, 1, 1, 1); +MODULE_DEPEND(ciss, pci, 1, 1, 1); + +/* + * Control device interface. + */ +static d_open_t ciss_open; +static d_close_t ciss_close; +static d_ioctl_t ciss_ioctl; + +static struct cdevsw ciss_cdevsw = { + .d_version = D_VERSION, + .d_flags = 0, + .d_open = ciss_open, + .d_close = ciss_close, + .d_ioctl = ciss_ioctl, + .d_name = "ciss", +}; + +/* + * This tunable can be set at boot time and controls whether physical devices + * that are marked hidden by the firmware should be exposed anyways. + */ +static unsigned int ciss_expose_hidden_physical = 0; +TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical); + +static unsigned int ciss_nop_message_heartbeat = 0; +TUNABLE_INT("hw.ciss.nop_message_heartbeat", &ciss_nop_message_heartbeat); + +/* + * This tunable can force a particular transport to be used: + * <= 0 : use default + * 1 : force simple + * 2 : force performant + */ +static int ciss_force_transport = 0; +TUNABLE_INT("hw.ciss.force_transport", &ciss_force_transport); + +/* + * This tunable can force a particular interrupt delivery method to be used: + * <= 0 : use default + * 1 : force INTx + * 2 : force MSIX + */ +static int ciss_force_interrupt = 0; +TUNABLE_INT("hw.ciss.force_interrupt", &ciss_force_interrupt); + +/************************************************************************ + * CISS adapters amazingly don't have a defined programming interface + * value. (One could say some very despairing things about PCI and + * people just not getting the general idea.) So we are forced to + * stick with matching against subvendor/subdevice, and thus have to + * be updated for every new CISS adapter that appears. + */ +#define CISS_BOARD_UNKNWON 0 +#define CISS_BOARD_SA5 1 +#define CISS_BOARD_SA5B 2 +#define CISS_BOARD_NOMSI (1<<4) + +static struct +{ + u_int16_t subvendor; + u_int16_t subdevice; + int flags; + char *desc; +} ciss_vendor_data[] = { + { 0x0e11, 0x4070, CISS_BOARD_SA5|CISS_BOARD_NOMSI, "Compaq Smart Array 5300" }, + { 0x0e11, 0x4080, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "Compaq Smart Array 5i" }, + { 0x0e11, 0x4082, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "Compaq Smart Array 532" }, + { 0x0e11, 0x4083, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "HP Smart Array 5312" }, + { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" }, + { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" }, + { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" }, + { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" }, + { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" }, + { 0x103C, 0x3211, CISS_BOARD_SA5, "HP Smart Array E200i" }, + { 0x103C, 0x3212, CISS_BOARD_SA5, "HP Smart Array E200" }, + { 0x103C, 0x3213, CISS_BOARD_SA5, "HP Smart Array E200i" }, + { 0x103C, 0x3214, CISS_BOARD_SA5, "HP Smart Array E200i" }, + { 0x103C, 0x3215, CISS_BOARD_SA5, "HP Smart Array E200i" }, + { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" }, + { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" }, + { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array P400" }, + { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array P400i" }, + { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array E500" }, + { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" }, + { 0x103C, 0x323D, CISS_BOARD_SA5, "HP Smart Array P700m" }, + { 0x103C, 0x3241, CISS_BOARD_SA5, "HP Smart Array P212" }, + { 0x103C, 0x3243, CISS_BOARD_SA5, "HP Smart Array P410" }, + { 0x103C, 0x3245, CISS_BOARD_SA5, "HP Smart Array P410i" }, + { 0x103C, 0x3247, CISS_BOARD_SA5, "HP Smart Array P411" }, + { 0x103C, 0x3249, CISS_BOARD_SA5, "HP Smart Array P812" }, + { 0x103C, 0x324A, CISS_BOARD_SA5, "HP Smart Array P712m" }, + { 0x103C, 0x324B, CISS_BOARD_SA5, "HP Smart Array" }, + { 0, 0, 0, NULL } +}; + +/************************************************************************ + * Find a match for the device in our list of known adapters. + */ +static int +ciss_lookup(device_t dev) +{ + int i; + + for (i = 0; ciss_vendor_data[i].desc != NULL; i++) + if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) && + (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) { + return(i); + } + return(-1); +} + +/************************************************************************ + * Match a known CISS adapter. + */ +static int +ciss_probe(device_t dev) +{ + int i; + + i = ciss_lookup(dev); + if (i != -1) { + device_set_desc(dev, ciss_vendor_data[i].desc); + return(BUS_PROBE_DEFAULT); + } + return(ENOENT); +} + +/************************************************************************ + * Attach the driver to this adapter. + */ +static int +ciss_attach(device_t dev) +{ + struct ciss_softc *sc; + int error; + + debug_called(1); + +#ifdef CISS_DEBUG + /* print structure/union sizes */ + debug_struct(ciss_command); + debug_struct(ciss_header); + debug_union(ciss_device_address); + debug_struct(ciss_cdb); + debug_struct(ciss_report_cdb); + debug_struct(ciss_notify_cdb); + debug_struct(ciss_notify); + debug_struct(ciss_message_cdb); + debug_struct(ciss_error_info_pointer); + debug_struct(ciss_error_info); + debug_struct(ciss_sg_entry); + debug_struct(ciss_config_table); + debug_struct(ciss_bmic_cdb); + debug_struct(ciss_bmic_id_ldrive); + debug_struct(ciss_bmic_id_lstatus); + debug_struct(ciss_bmic_id_table); + debug_struct(ciss_bmic_id_pdrive); + debug_struct(ciss_bmic_blink_pdrive); + debug_struct(ciss_bmic_flush_cache); + debug_const(CISS_MAX_REQUESTS); + debug_const(CISS_MAX_LOGICAL); + debug_const(CISS_INTERRUPT_COALESCE_DELAY); + debug_const(CISS_INTERRUPT_COALESCE_COUNT); + debug_const(CISS_COMMAND_ALLOC_SIZE); + debug_const(CISS_COMMAND_SG_LENGTH); + + debug_type(cciss_pci_info_struct); + debug_type(cciss_coalint_struct); + debug_type(cciss_coalint_struct); + debug_type(NodeName_type); + debug_type(NodeName_type); + debug_type(Heartbeat_type); + debug_type(BusTypes_type); + debug_type(FirmwareVer_type); + debug_type(DriverVer_type); + debug_type(IOCTL_Command_struct); +#endif + + sc = device_get_softc(dev); + sc->ciss_dev = dev; + mtx_init(&sc->ciss_mtx, "cissmtx", NULL, MTX_DEF); + callout_init_mtx(&sc->ciss_periodic, &sc->ciss_mtx, 0); + + /* + * Do PCI-specific init. + */ + if ((error = ciss_init_pci(sc)) != 0) + goto out; + + /* + * Initialise driver queues. + */ + ciss_initq_free(sc); + ciss_initq_notify(sc); + + /* + * Initalize device sysctls. + */ + ciss_init_sysctl(sc); + + /* + * Initialise command/request pool. + */ + if ((error = ciss_init_requests(sc)) != 0) + goto out; + + /* + * Get adapter information. + */ + if ((error = ciss_identify_adapter(sc)) != 0) + goto out; + + /* + * Find all the physical devices. + */ + if ((error = ciss_init_physical(sc)) != 0) + goto out; + + /* + * Build our private table of logical devices. + */ + if ((error = ciss_init_logical(sc)) != 0) + goto out; + + /* + * Enable interrupts so that the CAM scan can complete. + */ + CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc); + + /* + * Initialise the CAM interface. + */ + if ((error = ciss_cam_init(sc)) != 0) + goto out; + + /* + * Start the heartbeat routine and event chain. + */ + ciss_periodic(sc); + + /* + * Create the control device. + */ + sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev), + UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, + "ciss%d", device_get_unit(sc->ciss_dev)); + sc->ciss_dev_t->si_drv1 = sc; + + /* + * The adapter is running; synchronous commands can now sleep + * waiting for an interrupt to signal completion. + */ + sc->ciss_flags |= CISS_FLAG_RUNNING; + + ciss_spawn_notify_thread(sc); + + error = 0; + out: + if (error != 0) { + /* ciss_free() expects the mutex to be held */ + mtx_lock(&sc->ciss_mtx); + ciss_free(sc); + } + return(error); +} + +/************************************************************************ + * Detach the driver from this adapter. + */ +static int +ciss_detach(device_t dev) +{ + struct ciss_softc *sc = device_get_softc(dev); + + debug_called(1); + + mtx_lock(&sc->ciss_mtx); + if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) { + mtx_unlock(&sc->ciss_mtx); + return (EBUSY); + } + + /* flush adapter cache */ + ciss_flush_adapter(sc); + + /* release all resources. The mutex is released and freed here too. */ + ciss_free(sc); + + return(0); +} + +/************************************************************************ + * Prepare adapter for system shutdown. + */ +static int +ciss_shutdown(device_t dev) +{ + struct ciss_softc *sc = device_get_softc(dev); + + debug_called(1); + + mtx_lock(&sc->ciss_mtx); + /* flush adapter cache */ + ciss_flush_adapter(sc); + + if (sc->ciss_soft_reset) + ciss_soft_reset(sc); + mtx_unlock(&sc->ciss_mtx); + + return(0); +} + +static void +ciss_init_sysctl(struct ciss_softc *sc) +{ + + SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev), + SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)), + OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, ""); +} + +/************************************************************************ + * Perform PCI-specific attachment actions. + */ +static int +ciss_init_pci(struct ciss_softc *sc) +{ + uintptr_t cbase, csize, cofs; + uint32_t method, supported_methods; + int error, sqmask, i; + void *intr; + + debug_called(1); + + /* + * Work out adapter type. + */ + i = ciss_lookup(sc->ciss_dev); + if (i < 0) { + ciss_printf(sc, "unknown adapter type\n"); + return (ENXIO); + } + + if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) { + sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5; + } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) { + sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5B; + } else { + /* + * XXX Big hammer, masks/unmasks all possible interrupts. This should + * work on all hardware variants. Need to add code to handle the + * "controller crashed" interupt bit that this unmasks. + */ + sqmask = ~0; + } + + /* + * Allocate register window first (we need this to find the config + * struct). + */ + error = ENXIO; + sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS; + if ((sc->ciss_regs_resource = + bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY, + &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) { + ciss_printf(sc, "can't allocate register window\n"); + return(ENXIO); + } + sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource); + sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource); + + /* + * Find the BAR holding the config structure. If it's not the one + * we already mapped for registers, map it too. + */ + sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff; + if (sc->ciss_cfg_rid != sc->ciss_regs_rid) { + if ((sc->ciss_cfg_resource = + bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY, + &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) { + ciss_printf(sc, "can't allocate config window\n"); + return(ENXIO); + } + cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource); + csize = rman_get_end(sc->ciss_cfg_resource) - + rman_get_start(sc->ciss_cfg_resource) + 1; + } else { + cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource); + csize = rman_get_end(sc->ciss_regs_resource) - + rman_get_start(sc->ciss_regs_resource) + 1; + } + cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF); + + /* + * Use the base/size/offset values we just calculated to + * sanity-check the config structure. If it's OK, point to it. + */ + if ((cofs + sizeof(struct ciss_config_table)) > csize) { + ciss_printf(sc, "config table outside window\n"); + return(ENXIO); + } + sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs); + debug(1, "config struct at %p", sc->ciss_cfg); + + /* + * Calculate the number of request structures/commands we are + * going to provide for this adapter. + */ + sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands); + + /* + * Validate the config structure. If we supported other transport + * methods, we could select amongst them at this point in time. + */ + if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) { + ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n", + sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1], + sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]); + return(ENXIO); + } + + /* + * Select the mode of operation, prefer Performant. + */ + if (!(sc->ciss_cfg->supported_methods & + (CISS_TRANSPORT_METHOD_SIMPLE | CISS_TRANSPORT_METHOD_PERF))) { + ciss_printf(sc, "No supported transport layers: 0x%x\n", + sc->ciss_cfg->supported_methods); + } + + switch (ciss_force_transport) { + case 1: + supported_methods = CISS_TRANSPORT_METHOD_SIMPLE; + break; + case 2: + supported_methods = CISS_TRANSPORT_METHOD_PERF; + break; + default: + supported_methods = sc->ciss_cfg->supported_methods; + break; + } + +setup: + if ((supported_methods & CISS_TRANSPORT_METHOD_PERF) != 0) { + method = CISS_TRANSPORT_METHOD_PERF; + sc->ciss_perf = (struct ciss_perf_config *)(cbase + cofs + + sc->ciss_cfg->transport_offset); + if (ciss_init_perf(sc)) { + supported_methods &= ~method; + goto setup; + } + } else if (supported_methods & CISS_TRANSPORT_METHOD_SIMPLE) { + method = CISS_TRANSPORT_METHOD_SIMPLE; + } else { + ciss_printf(sc, "No supported transport methods: 0x%x\n", + sc->ciss_cfg->supported_methods); + return(ENXIO); + } + + /* + * Tell it we're using the low 4GB of RAM. Set the default interrupt + * coalescing options. + */ + sc->ciss_cfg->requested_method = method; + sc->ciss_cfg->command_physlimit = 0; + sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY; + sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT; + +#ifdef __i386__ + sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH; +#endif + + if (ciss_update_config(sc)) { + ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n", + CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR)); + return(ENXIO); + } + if ((sc->ciss_cfg->active_method & method) == 0) { + supported_methods &= ~method; + if (supported_methods == 0) { + ciss_printf(sc, "adapter refuses to go into available transports " + "mode (0x%x, 0x%x)\n", supported_methods, + sc->ciss_cfg->active_method); + return(ENXIO); + } else + goto setup; + } + + /* + * Wait for the adapter to come ready. + */ + if ((error = ciss_wait_adapter(sc)) != 0) + return(error); + + /* Prepare to possibly use MSIX and/or PERFORMANT interrupts. Normal + * interrupts have a rid of 0, this will be overridden if MSIX is used. + */ + sc->ciss_irq_rid[0] = 0; + if (method == CISS_TRANSPORT_METHOD_PERF) { + ciss_printf(sc, "PERFORMANT Transport\n"); + if ((ciss_force_interrupt != 1) && (ciss_setup_msix(sc) == 0)) { + intr = ciss_perf_msi_intr; + } else { + intr = ciss_perf_intr; + } + /* XXX The docs say that the 0x01 bit is only for SAS controllers. + * Unfortunately, there is no good way to know if this is a SAS + * controller. Hopefully enabling this bit universally will work OK. + * It seems to work fine for SA6i controllers. + */ + sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_OPQ | CISS_TL_PERF_INTR_MSI; + + } else { + ciss_printf(sc, "SIMPLE Transport\n"); + /* MSIX doesn't seem to work in SIMPLE mode, only enable if it forced */ + if (ciss_force_interrupt == 2) + /* If this fails, we automatically revert to INTx */ + ciss_setup_msix(sc); + sc->ciss_perf = NULL; + intr = ciss_intr; + sc->ciss_interrupt_mask = sqmask; + } + + /* + * Turn off interrupts before we go routing anything. + */ + CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc); + + /* + * Allocate and set up our interrupt. + */ + if ((sc->ciss_irq_resource = + bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid[0], + RF_ACTIVE | RF_SHAREABLE)) == NULL) { + ciss_printf(sc, "can't allocate interrupt\n"); + return(ENXIO); + } + + if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource, + INTR_TYPE_CAM|INTR_MPSAFE, NULL, intr, sc, + &sc->ciss_intr)) { + ciss_printf(sc, "can't set up interrupt\n"); + return(ENXIO); + } + + /* + * Allocate the parent bus DMA tag appropriate for our PCI + * interface. + * + * Note that "simple" adapters can only address within a 32-bit + * span. + */ + if (bus_dma_tag_create(NULL, /* parent */ + 1, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ + CISS_MAX_SG_ELEMENTS, /* nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->ciss_parent_dmat)) { + ciss_printf(sc, "can't allocate parent DMA tag\n"); + return(ENOMEM); + } + + /* + * Create DMA tag for mapping buffers into adapter-addressable + * space. + */ + if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ + 1, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + MAXBSIZE, CISS_MAX_SG_ELEMENTS, /* maxsize, nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + BUS_DMA_ALLOCNOW, /* flags */ + busdma_lock_mutex, &sc->ciss_mtx, /* lockfunc, lockarg */ + &sc->ciss_buffer_dmat)) { + ciss_printf(sc, "can't allocate buffer DMA tag\n"); + return(ENOMEM); + } + return(0); +} + +/************************************************************************ + * Setup MSI/MSIX operation (Performant only) + * Four interrupts are available, but we only use 1 right now. If MSI-X + * isn't avaialble, try using MSI instead. + */ +static int +ciss_setup_msix(struct ciss_softc *sc) +{ + int val, i; + + /* Weed out devices that don't actually support MSI */ + i = ciss_lookup(sc->ciss_dev); + if (ciss_vendor_data[i].flags & CISS_BOARD_NOMSI) + return (EINVAL); + + /* + * Only need to use the minimum number of MSI vectors, as the driver + * doesn't support directed MSIX interrupts. + */ + val = pci_msix_count(sc->ciss_dev); + if (val < CISS_MSI_COUNT) { + val = pci_msi_count(sc->ciss_dev); + device_printf(sc->ciss_dev, "got %d MSI messages]\n", val); + if (val < CISS_MSI_COUNT) + return (EINVAL); + } + val = MIN(val, CISS_MSI_COUNT); + if (pci_alloc_msix(sc->ciss_dev, &val) != 0) { + if (pci_alloc_msi(sc->ciss_dev, &val) != 0) + return (EINVAL); + } + + sc->ciss_msi = val; + if (bootverbose) + ciss_printf(sc, "Using %d MSIX interrupt%s\n", val, + (val != 1) ? "s" : ""); + + for (i = 0; i < val; i++) + sc->ciss_irq_rid[i] = i + 1; + + return (0); + +} + +/************************************************************************ + * Setup the Performant structures. + */ +static int +ciss_init_perf(struct ciss_softc *sc) +{ + struct ciss_perf_config *pc = sc->ciss_perf; + int reply_size; + + /* + * Create the DMA tag for the reply queue. + */ + reply_size = sizeof(uint64_t) * sc->ciss_max_requests; + if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ + 1, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + reply_size, 1, /* maxsize, nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->ciss_reply_dmat)) { + ciss_printf(sc, "can't allocate reply DMA tag\n"); + return(ENOMEM); + } + /* + * Allocate memory and make it available for DMA. + */ + if (bus_dmamem_alloc(sc->ciss_reply_dmat, (void **)&sc->ciss_reply, + BUS_DMA_NOWAIT, &sc->ciss_reply_map)) { + ciss_printf(sc, "can't allocate reply memory\n"); + return(ENOMEM); + } + bus_dmamap_load(sc->ciss_reply_dmat, sc->ciss_reply_map, sc->ciss_reply, + reply_size, ciss_command_map_helper, &sc->ciss_reply_phys, 0); + bzero(sc->ciss_reply, reply_size); + + sc->ciss_cycle = 0x1; + sc->ciss_rqidx = 0; + + /* + * Preload the fetch table with common command sizes. This allows the + * hardware to not waste bus cycles for typical i/o commands, but also not + * tax the driver to be too exact in choosing sizes. The table is optimized + * for page-aligned i/o's, but since most i/o comes from the various pagers, + * it's a reasonable assumption to make. + */ + pc->fetch_count[CISS_SG_FETCH_NONE] = (sizeof(struct ciss_command) + 15) / 16; + pc->fetch_count[CISS_SG_FETCH_1] = + (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 1 + 15) / 16; + pc->fetch_count[CISS_SG_FETCH_2] = + (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 2 + 15) / 16; + pc->fetch_count[CISS_SG_FETCH_4] = + (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 4 + 15) / 16; + pc->fetch_count[CISS_SG_FETCH_8] = + (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 8 + 15) / 16; + pc->fetch_count[CISS_SG_FETCH_16] = + (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 16 + 15) / 16; + pc->fetch_count[CISS_SG_FETCH_32] = + (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 32 + 15) / 16; + pc->fetch_count[CISS_SG_FETCH_MAX] = (CISS_COMMAND_ALLOC_SIZE + 15) / 16; + + pc->rq_size = sc->ciss_max_requests; /* XXX less than the card supports? */ + pc->rq_count = 1; /* XXX Hardcode for a single queue */ + pc->rq_bank_hi = 0; + pc->rq_bank_lo = 0; + pc->rq[0].rq_addr_hi = 0x0; + pc->rq[0].rq_addr_lo = sc->ciss_reply_phys; + + return(0); +} + +/************************************************************************ + * Wait for the adapter to come ready. + */ +static int +ciss_wait_adapter(struct ciss_softc *sc) +{ + int i; + + debug_called(1); + + /* + * Wait for the adapter to come ready. + */ + if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) { + ciss_printf(sc, "waiting for adapter to come ready...\n"); + for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) { + DELAY(1000000); /* one second */ + if (i > 30) { + ciss_printf(sc, "timed out waiting for adapter to come ready\n"); + return(EIO); + } + } + } + return(0); +} + +/************************************************************************ + * Flush the adapter cache. + */ +static int +ciss_flush_adapter(struct ciss_softc *sc) +{ + struct ciss_request *cr; + struct ciss_bmic_flush_cache *cbfc; + int error, command_status; + + debug_called(1); + + cr = NULL; + cbfc = NULL; + + /* + * Build a BMIC request to flush the cache. We don't disable + * it, as we may be going to do more I/O (eg. we are emulating + * the Synchronise Cache command). + */ + if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { + error = ENOMEM; + goto out; + } + if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE, + (void **)&cbfc, sizeof(*cbfc))) != 0) + goto out; + + /* + * Submit the request and wait for it to complete. + */ + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error); + goto out; + } + + /* + * Check response. + */ + ciss_report_request(cr, &command_status, NULL); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: + break; + default: + ciss_printf(sc, "error flushing cache (%s)\n", + ciss_name_command_status(command_status)); + error = EIO; + goto out; + } + +out: + if (cbfc != NULL) + free(cbfc, CISS_MALLOC_CLASS); + if (cr != NULL) + ciss_release_request(cr); + return(error); +} + +static void +ciss_soft_reset(struct ciss_softc *sc) +{ + struct ciss_request *cr = NULL; + struct ciss_command *cc; + int i, error = 0; + + for (i = 0; i < sc->ciss_max_logical_bus; i++) { + /* only reset proxy controllers */ + if (sc->ciss_controllers[i].physical.bus == 0) + continue; + + if ((error = ciss_get_request(sc, &cr)) != 0) + break; + + if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET, + NULL, 0)) != 0) + break; + + cc = cr->cr_cc; + cc->header.address = sc->ciss_controllers[i]; + + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) + break; + + ciss_release_request(cr); + } + + if (error) + ciss_printf(sc, "error resetting controller (%d)\n", error); + + if (cr != NULL) + ciss_release_request(cr); +} + +/************************************************************************ + * Allocate memory for the adapter command structures, initialise + * the request structures. + * + * Note that the entire set of commands are allocated in a single + * contiguous slab. + */ +static int +ciss_init_requests(struct ciss_softc *sc) +{ + struct ciss_request *cr; + int i; + + debug_called(1); + + if (bootverbose) + ciss_printf(sc, "using %d of %d available commands\n", + sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands); + + /* + * Create the DMA tag for commands. + */ + if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ + 32, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + CISS_COMMAND_ALLOC_SIZE * + sc->ciss_max_requests, 1, /* maxsize, nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->ciss_command_dmat)) { + ciss_printf(sc, "can't allocate command DMA tag\n"); + return(ENOMEM); + } + /* + * Allocate memory and make it available for DMA. + */ + if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command, + BUS_DMA_NOWAIT, &sc->ciss_command_map)) { + ciss_printf(sc, "can't allocate command memory\n"); + return(ENOMEM); + } + bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map,sc->ciss_command, + CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests, + ciss_command_map_helper, &sc->ciss_command_phys, 0); + bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests); + + /* + * Set up the request and command structures, push requests onto + * the free queue. + */ + for (i = 1; i < sc->ciss_max_requests; i++) { + cr = &sc->ciss_request[i]; + cr->cr_sc = sc; + cr->cr_tag = i; + cr->cr_cc = (struct ciss_command *)((uintptr_t)sc->ciss_command + + CISS_COMMAND_ALLOC_SIZE * i); + cr->cr_ccphys = sc->ciss_command_phys + CISS_COMMAND_ALLOC_SIZE * i; + bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap); + ciss_enqueue_free(cr); + } + return(0); +} + +static void +ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + uint32_t *addr; + + addr = arg; + *addr = segs[0].ds_addr; +} + +/************************************************************************ + * Identify the adapter, print some information about it. + */ +static int +ciss_identify_adapter(struct ciss_softc *sc) +{ + struct ciss_request *cr; + int error, command_status; + + debug_called(1); + + cr = NULL; + + /* + * Get a request, allocate storage for the adapter data. + */ + if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR, + (void **)&sc->ciss_id, + sizeof(*sc->ciss_id))) != 0) + goto out; + + /* + * Submit the request and wait for it to complete. + */ + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error); + goto out; + } + + /* + * Check response. + */ + ciss_report_request(cr, &command_status, NULL); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ + break; + case CISS_CMD_STATUS_DATA_UNDERRUN: + case CISS_CMD_STATUS_DATA_OVERRUN: + ciss_printf(sc, "data over/underrun reading adapter information\n"); + default: + ciss_printf(sc, "error reading adapter information (%s)\n", + ciss_name_command_status(command_status)); + error = EIO; + goto out; + } + + /* sanity-check reply */ + if (!sc->ciss_id->big_map_supported) { + ciss_printf(sc, "adapter does not support BIG_MAP\n"); + error = ENXIO; + goto out; + } + +#if 0 + /* XXX later revisions may not need this */ + sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH; +#endif + + /* XXX only really required for old 5300 adapters? */ + sc->ciss_flags |= CISS_FLAG_BMIC_ABORT; + + /* print information */ + if (bootverbose) { +#if 0 /* XXX proxy volumes??? */ + ciss_printf(sc, " %d logical drive%s configured\n", + sc->ciss_id->configured_logical_drives, + (sc->ciss_id->configured_logical_drives == 1) ? "" : "s"); +#endif + ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision); + ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count); + + ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature); + ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence); + ciss_printf(sc, " supported I/O methods 0x%b\n", + sc->ciss_cfg->supported_methods, + "\20\1READY\2simple\3performant\4MEMQ\n"); + ciss_printf(sc, " active I/O method 0x%b\n", + sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n"); + ciss_printf(sc, " 4G page base 0x%08x\n", + sc->ciss_cfg->command_physlimit); + ciss_printf(sc, " interrupt coalesce delay %dus\n", + sc->ciss_cfg->interrupt_coalesce_delay); + ciss_printf(sc, " interrupt coalesce count %d\n", + sc->ciss_cfg->interrupt_coalesce_count); + ciss_printf(sc, " max outstanding commands %d\n", + sc->ciss_cfg->max_outstanding_commands); + ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types, + "\20\1ultra2\2ultra3\10fibre1\11fibre2\n"); + ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name); + ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat); + } + +out: + if (error) { + if (sc->ciss_id != NULL) { + free(sc->ciss_id, CISS_MALLOC_CLASS); + sc->ciss_id = NULL; + } + } + if (cr != NULL) + ciss_release_request(cr); + return(error); +} + +/************************************************************************ + * Helper routine for generating a list of logical and physical luns. + */ +static struct ciss_lun_report * +ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_report_cdb *crc; + struct ciss_lun_report *cll; + int command_status; + int report_size; + int error = 0; + + debug_called(1); + + cr = NULL; + cll = NULL; + + /* + * Get a request, allocate storage for the address list. + */ + if ((error = ciss_get_request(sc, &cr)) != 0) + goto out; + report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address); + if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { + ciss_printf(sc, "can't allocate memory for lun report\n"); + error = ENOMEM; + goto out; + } + + /* + * Build the Report Logical/Physical LUNs command. + */ + cc = cr->cr_cc; + cr->cr_data = cll; + cr->cr_length = report_size; + cr->cr_flags = CISS_REQ_DATAIN; + + cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; + cc->header.address.physical.bus = 0; + cc->header.address.physical.target = 0; + cc->cdb.cdb_length = sizeof(*crc); + cc->cdb.type = CISS_CDB_TYPE_COMMAND; + cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; + cc->cdb.direction = CISS_CDB_DIRECTION_READ; + cc->cdb.timeout = 30; /* XXX better suggestions? */ + + crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]); + bzero(crc, sizeof(*crc)); + crc->opcode = opcode; + crc->length = htonl(report_size); /* big-endian field */ + cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */ + + /* + * Submit the request and wait for it to complete. (timeout + * here should be much greater than above) + */ + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error); + goto out; + } + + /* + * Check response. Note that data over/underrun is OK. + */ + ciss_report_request(cr, &command_status, NULL); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ + case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */ + break; + case CISS_CMD_STATUS_DATA_OVERRUN: + ciss_printf(sc, "WARNING: more units than driver limit (%d)\n", + CISS_MAX_LOGICAL); + break; + default: + ciss_printf(sc, "error detecting logical drive configuration (%s)\n", + ciss_name_command_status(command_status)); + error = EIO; + goto out; + } + ciss_release_request(cr); + cr = NULL; + +out: + if (cr != NULL) + ciss_release_request(cr); + if (error && cll != NULL) { + free(cll, CISS_MALLOC_CLASS); + cll = NULL; + } + return(cll); +} + +/************************************************************************ + * Find logical drives on the adapter. + */ +static int +ciss_init_logical(struct ciss_softc *sc) +{ + struct ciss_lun_report *cll; + int error = 0, i, j; + int ndrives; + + debug_called(1); + + cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS, + CISS_MAX_LOGICAL); + if (cll == NULL) { + error = ENXIO; + goto out; + } + + /* sanity-check reply */ + ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); + if ((ndrives < 0) || (ndrives > CISS_MAX_LOGICAL)) { + ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n", + ndrives, CISS_MAX_LOGICAL); + error = ENXIO; + goto out; + } + + /* + * Save logical drive information. + */ + if (bootverbose) { + ciss_printf(sc, "%d logical drive%s\n", + ndrives, (ndrives > 1 || ndrives == 0) ? "s" : ""); + } + + sc->ciss_logical = + malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *), + CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); + if (sc->ciss_logical == NULL) { + error = ENXIO; + goto out; + } + + for (i = 0; i <= sc->ciss_max_logical_bus; i++) { + sc->ciss_logical[i] = + malloc(CISS_MAX_LOGICAL * sizeof(struct ciss_ldrive), + CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); + if (sc->ciss_logical[i] == NULL) { + error = ENXIO; + goto out; + } + + for (j = 0; j < CISS_MAX_LOGICAL; j++) + sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT; + } + + + for (i = 0; i < CISS_MAX_LOGICAL; i++) { + if (i < ndrives) { + struct ciss_ldrive *ld; + int bus, target; + + bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun); + target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun); + ld = &sc->ciss_logical[bus][target]; + + ld->cl_address = cll->lun[i]; + ld->cl_controller = &sc->ciss_controllers[bus]; + if (ciss_identify_logical(sc, ld) != 0) + continue; + /* + * If the drive has had media exchanged, we should bring it online. + */ + if (ld->cl_lstatus->media_exchanged) + ciss_accept_media(sc, ld); + + } + } + + out: + if (cll != NULL) + free(cll, CISS_MALLOC_CLASS); + return(error); +} + +static int +ciss_init_physical(struct ciss_softc *sc) +{ + struct ciss_lun_report *cll; + int error = 0, i; + int nphys; + int bus, target; + + debug_called(1); + + bus = 0; + target = 0; + + cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS, + CISS_MAX_PHYSICAL); + if (cll == NULL) { + error = ENXIO; + goto out; + } + + nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); + + if (bootverbose) { + ciss_printf(sc, "%d physical device%s\n", + nphys, (nphys > 1 || nphys == 0) ? "s" : ""); + } + + /* + * Figure out the bus mapping. + * Logical buses include both the local logical bus for local arrays and + * proxy buses for remote arrays. Physical buses are numbered by the + * controller and represent physical buses that hold physical devices. + * We shift these bus numbers so that everything fits into a single flat + * numbering space for CAM. Logical buses occupy the first 32 CAM bus + * numbers, and the physical bus numbers are shifted to be above that. + * This results in the various driver arrays being indexed as follows: + * + * ciss_controllers[] - indexed by logical bus + * ciss_cam_sim[] - indexed by both logical and physical, with physical + * being shifted by 32. + * ciss_logical[][] - indexed by logical bus + * ciss_physical[][] - indexed by physical bus + * + * XXX This is getting more and more hackish. CISS really doesn't play + * well with a standard SCSI model; devices are addressed via magic + * cookies, not via b/t/l addresses. Since there is no way to store + * the cookie in the CAM device object, we have to keep these lookup + * tables handy so that the devices can be found quickly at the cost + * of wasting memory and having a convoluted lookup scheme. This + * driver should probably be converted to block interface. + */ + /* + * If the L2 and L3 SCSI addresses are 0, this signifies a proxy + * controller. A proxy controller is another physical controller + * behind the primary PCI controller. We need to know about this + * so that BMIC commands can be properly targeted. There can be + * proxy controllers attached to a single PCI controller, so + * find the highest numbered one so the array can be properly + * sized. + */ + sc->ciss_max_logical_bus = 1; + for (i = 0; i < nphys; i++) { + if (cll->lun[i].physical.extra_address == 0) { + bus = cll->lun[i].physical.bus; + sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1; + } else { + bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address); + sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus); + } + } + + sc->ciss_controllers = + malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address), + CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); + + if (sc->ciss_controllers == NULL) { + ciss_printf(sc, "Could not allocate memory for controller map\n"); + error = ENOMEM; + goto out; + } + + /* setup a map of controller addresses */ + for (i = 0; i < nphys; i++) { + if (cll->lun[i].physical.extra_address == 0) { + sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i]; + } + } + + sc->ciss_physical = + malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *), + CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); + if (sc->ciss_physical == NULL) { + ciss_printf(sc, "Could not allocate memory for physical device map\n"); + error = ENOMEM; + goto out; + } + + for (i = 0; i < sc->ciss_max_physical_bus; i++) { + sc->ciss_physical[i] = + malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT, + CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); + if (sc->ciss_physical[i] == NULL) { + ciss_printf(sc, "Could not allocate memory for target map\n"); + error = ENOMEM; + goto out; + } + } + + ciss_filter_physical(sc, cll); + +out: + if (cll != NULL) + free(cll, CISS_MALLOC_CLASS); + + return(error); +} + +static int +ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll) +{ + u_int32_t ea; + int i, nphys; + int bus, target; + + nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); + for (i = 0; i < nphys; i++) { + if (cll->lun[i].physical.extra_address == 0) + continue; + + /* + * Filter out devices that we don't want. Level 3 LUNs could + * probably be supported, but the docs don't give enough of a + * hint to know how. + * + * The mode field of the physical address is likely set to have + * hard disks masked out. Honor it unless the user has overridden + * us with the tunable. We also munge the inquiry data for these + * disks so that they only show up as passthrough devices. Keeping + * them visible in this fashion is useful for doing things like + * flashing firmware. + */ + ea = cll->lun[i].physical.extra_address; + if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) || + (CISS_EXTRA_MODE2(ea) == 0x3)) + continue; + if ((ciss_expose_hidden_physical == 0) && + (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL)) + continue; + + /* + * Note: CISS firmware numbers physical busses starting at '1', not + * '0'. This numbering is internal to the firmware and is only + * used as a hint here. + */ + bus = CISS_EXTRA_BUS2(ea) - 1; + target = CISS_EXTRA_TARGET2(ea); + sc->ciss_physical[bus][target].cp_address = cll->lun[i]; + sc->ciss_physical[bus][target].cp_online = 1; + } + + return (0); +} + +static int +ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct scsi_inquiry *inq; + int error; + int command_status; + + cr = NULL; + + bzero(&ld->cl_geometry, sizeof(ld->cl_geometry)); + + if ((error = ciss_get_request(sc, &cr)) != 0) + goto out; + + cc = cr->cr_cc; + cr->cr_data = &ld->cl_geometry; + cr->cr_length = sizeof(ld->cl_geometry); + cr->cr_flags = CISS_REQ_DATAIN; + + cc->header.address = ld->cl_address; + cc->cdb.cdb_length = 6; + cc->cdb.type = CISS_CDB_TYPE_COMMAND; + cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; + cc->cdb.direction = CISS_CDB_DIRECTION_READ; + cc->cdb.timeout = 30; + + inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]); + inq->opcode = INQUIRY; + inq->byte2 = SI_EVPD; + inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY; + inq->length = sizeof(ld->cl_geometry); + + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "error getting geometry (%d)\n", error); + goto out; + } + + ciss_report_request(cr, &command_status, NULL); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: + case CISS_CMD_STATUS_DATA_UNDERRUN: + break; + case CISS_CMD_STATUS_DATA_OVERRUN: + ciss_printf(sc, "WARNING: Data overrun\n"); + break; + default: + ciss_printf(sc, "Error detecting logical drive geometry (%s)\n", + ciss_name_command_status(command_status)); + break; + } + +out: + if (cr != NULL) + ciss_release_request(cr); + return(error); +} +/************************************************************************ + * Identify a logical drive, initialise state related to it. + */ +static int +ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_bmic_cdb *cbc; + int error, command_status; + + debug_called(1); + + cr = NULL; + + /* + * Build a BMIC request to fetch the drive ID. + */ + if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE, + (void **)&ld->cl_ldrive, + sizeof(*ld->cl_ldrive))) != 0) + goto out; + cc = cr->cr_cc; + cc->header.address = *ld->cl_controller; /* target controller */ + cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); + cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); + + /* + * Submit the request and wait for it to complete. + */ + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error); + goto out; + } + + /* + * Check response. + */ + ciss_report_request(cr, &command_status, NULL); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ + break; + case CISS_CMD_STATUS_DATA_UNDERRUN: + case CISS_CMD_STATUS_DATA_OVERRUN: + ciss_printf(sc, "data over/underrun reading logical drive ID\n"); + default: + ciss_printf(sc, "error reading logical drive ID (%s)\n", + ciss_name_command_status(command_status)); + error = EIO; + goto out; + } + ciss_release_request(cr); + cr = NULL; + + /* + * Build a CISS BMIC command to get the logical drive status. + */ + if ((error = ciss_get_ldrive_status(sc, ld)) != 0) + goto out; + + /* + * Get the logical drive geometry. + */ + if ((error = ciss_inquiry_logical(sc, ld)) != 0) + goto out; + + /* + * Print the drive's basic characteristics. + */ + if (bootverbose) { + ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ", + CISS_LUN_TO_BUS(ld->cl_address.logical.lun), + CISS_LUN_TO_TARGET(ld->cl_address.logical.lun), + ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance), + ((ld->cl_ldrive->blocks_available / (1024 * 1024)) * + ld->cl_ldrive->block_size)); + + ciss_print_ldrive(sc, ld); + } +out: + if (error != 0) { + /* make the drive not-exist */ + ld->cl_status = CISS_LD_NONEXISTENT; + if (ld->cl_ldrive != NULL) { + free(ld->cl_ldrive, CISS_MALLOC_CLASS); + ld->cl_ldrive = NULL; + } + if (ld->cl_lstatus != NULL) { + free(ld->cl_lstatus, CISS_MALLOC_CLASS); + ld->cl_lstatus = NULL; + } + } + if (cr != NULL) + ciss_release_request(cr); + + return(error); +} + +/************************************************************************ + * Get status for a logical drive. + * + * XXX should we also do this in response to Test Unit Ready? + */ +static int +ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_bmic_cdb *cbc; + int error, command_status; + + /* + * Build a CISS BMIC command to get the logical drive status. + */ + if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS, + (void **)&ld->cl_lstatus, + sizeof(*ld->cl_lstatus))) != 0) + goto out; + cc = cr->cr_cc; + cc->header.address = *ld->cl_controller; /* target controller */ + cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); + cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); + + /* + * Submit the request and wait for it to complete. + */ + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error); + goto out; + } + + /* + * Check response. + */ + ciss_report_request(cr, &command_status, NULL); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ + break; + case CISS_CMD_STATUS_DATA_UNDERRUN: + case CISS_CMD_STATUS_DATA_OVERRUN: + ciss_printf(sc, "data over/underrun reading logical drive status\n"); + default: + ciss_printf(sc, "error reading logical drive status (%s)\n", + ciss_name_command_status(command_status)); + error = EIO; + goto out; + } + + /* + * Set the drive's summary status based on the returned status. + * + * XXX testing shows that a failed JBOD drive comes back at next + * boot in "queued for expansion" mode. WTF? + */ + ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status); + +out: + if (cr != NULL) + ciss_release_request(cr); + return(error); +} + +/************************************************************************ + * Notify the adapter of a config update. + */ +static int +ciss_update_config(struct ciss_softc *sc) +{ + int i; + + debug_called(1); + + CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE); + for (i = 0; i < 1000; i++) { + if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) & + CISS_TL_SIMPLE_IDBR_CFG_TABLE)) { + return(0); + } + DELAY(1000); + } + return(1); +} + +/************************************************************************ + * Accept new media into a logical drive. + * + * XXX The drive has previously been offline; it would be good if we + * could make sure it's not open right now. + */ +static int +ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_bmic_cdb *cbc; + int command_status; + int error = 0, ldrive; + + ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); + + debug(0, "bringing logical drive %d back online"); + + /* + * Build a CISS BMIC command to bring the drive back online. + */ + if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA, + NULL, 0)) != 0) + goto out; + cc = cr->cr_cc; + cc->header.address = *ld->cl_controller; /* target controller */ + cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); + cbc->log_drive = ldrive; + + /* + * Submit the request and wait for it to complete. + */ + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error); + goto out; + } + + /* + * Check response. + */ + ciss_report_request(cr, &command_status, NULL); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: /* all OK */ + /* we should get a logical drive status changed event here */ + break; + default: + ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n", + ciss_name_command_status(command_status)); + break; + } + +out: + if (cr != NULL) + ciss_release_request(cr); + return(error); +} + +/************************************************************************ + * Release adapter resources. + */ +static void +ciss_free(struct ciss_softc *sc) +{ + struct ciss_request *cr; + int i, j; + + debug_called(1); + + /* we're going away */ + sc->ciss_flags |= CISS_FLAG_ABORTING; + + /* terminate the periodic heartbeat routine */ + callout_stop(&sc->ciss_periodic); + + /* cancel the Event Notify chain */ + ciss_notify_abort(sc); + + ciss_kill_notify_thread(sc); + + /* disconnect from CAM */ + if (sc->ciss_cam_sim) { + for (i = 0; i < sc->ciss_max_logical_bus; i++) { + if (sc->ciss_cam_sim[i]) { + xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i])); + cam_sim_free(sc->ciss_cam_sim[i], 0); + } + } + for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + + CISS_PHYSICAL_BASE; i++) { + if (sc->ciss_cam_sim[i]) { + xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i])); + cam_sim_free(sc->ciss_cam_sim[i], 0); + } + } + free(sc->ciss_cam_sim, CISS_MALLOC_CLASS); + } + if (sc->ciss_cam_devq) + cam_simq_free(sc->ciss_cam_devq); + + /* remove the control device */ + mtx_unlock(&sc->ciss_mtx); + if (sc->ciss_dev_t != NULL) + destroy_dev(sc->ciss_dev_t); + + /* Final cleanup of the callout. */ + callout_drain(&sc->ciss_periodic); + mtx_destroy(&sc->ciss_mtx); + + /* free the controller data */ + if (sc->ciss_id != NULL) + free(sc->ciss_id, CISS_MALLOC_CLASS); + + /* release I/O resources */ + if (sc->ciss_regs_resource != NULL) + bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, + sc->ciss_regs_rid, sc->ciss_regs_resource); + if (sc->ciss_cfg_resource != NULL) + bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, + sc->ciss_cfg_rid, sc->ciss_cfg_resource); + if (sc->ciss_intr != NULL) + bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr); + if (sc->ciss_irq_resource != NULL) + bus_release_resource(sc->ciss_dev, SYS_RES_IRQ, + sc->ciss_irq_rid[0], sc->ciss_irq_resource); + if (sc->ciss_msi) + pci_release_msi(sc->ciss_dev); + + while ((cr = ciss_dequeue_free(sc)) != NULL) + bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap); + if (sc->ciss_buffer_dmat) + bus_dma_tag_destroy(sc->ciss_buffer_dmat); + + /* destroy command memory and DMA tag */ + if (sc->ciss_command != NULL) { + bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map); + bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map); + } + if (sc->ciss_command_dmat) + bus_dma_tag_destroy(sc->ciss_command_dmat); + + if (sc->ciss_reply) { + bus_dmamap_unload(sc->ciss_reply_dmat, sc->ciss_reply_map); + bus_dmamem_free(sc->ciss_reply_dmat, sc->ciss_reply, sc->ciss_reply_map); + } + if (sc->ciss_reply_dmat) + bus_dma_tag_destroy(sc->ciss_reply_dmat); + + /* destroy DMA tags */ + if (sc->ciss_parent_dmat) + bus_dma_tag_destroy(sc->ciss_parent_dmat); + if (sc->ciss_logical) { + for (i = 0; i <= sc->ciss_max_logical_bus; i++) { + for (j = 0; j < CISS_MAX_LOGICAL; j++) { + if (sc->ciss_logical[i][j].cl_ldrive) + free(sc->ciss_logical[i][j].cl_ldrive, CISS_MALLOC_CLASS); + if (sc->ciss_logical[i][j].cl_lstatus) + free(sc->ciss_logical[i][j].cl_lstatus, CISS_MALLOC_CLASS); + } + free(sc->ciss_logical[i], CISS_MALLOC_CLASS); + } + free(sc->ciss_logical, CISS_MALLOC_CLASS); + } + + if (sc->ciss_physical) { + for (i = 0; i < sc->ciss_max_physical_bus; i++) + free(sc->ciss_physical[i], CISS_MALLOC_CLASS); + free(sc->ciss_physical, CISS_MALLOC_CLASS); + } + + if (sc->ciss_controllers) + free(sc->ciss_controllers, CISS_MALLOC_CLASS); + +} + +/************************************************************************ + * Give a command to the adapter. + * + * Note that this uses the simple transport layer directly. If we + * want to add support for other layers, we'll need a switch of some + * sort. + * + * Note that the simple transport layer has no way of refusing a + * command; we only have as many request structures as the adapter + * supports commands, so we don't have to check (this presumes that + * the adapter can handle commands as fast as we throw them at it). + */ +static int +ciss_start(struct ciss_request *cr) +{ + struct ciss_command *cc; /* XXX debugging only */ + int error; + + cc = cr->cr_cc; + debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag); + + /* + * Map the request's data. + */ + if ((error = ciss_map_request(cr))) + return(error); + +#if 0 + ciss_print_request(cr); +#endif + + return(0); +} + +/************************************************************************ + * Fetch completed request(s) from the adapter, queue them for + * completion handling. + * + * Note that this uses the simple transport layer directly. If we + * want to add support for other layers, we'll need a switch of some + * sort. + * + * Note that the simple transport mechanism does not require any + * reentrancy protection; the OPQ read is atomic. If there is a + * chance of a race with something else that might move the request + * off the busy list, then we will have to lock against that + * (eg. timeouts, etc.) + */ +static void +ciss_done(struct ciss_softc *sc, cr_qhead_t *qh) +{ + struct ciss_request *cr; + struct ciss_command *cc; + u_int32_t tag, index; + + debug_called(3); + + /* + * Loop quickly taking requests from the adapter and moving them + * to the completed queue. + */ + for (;;) { + + tag = CISS_TL_SIMPLE_FETCH_CMD(sc); + if (tag == CISS_TL_SIMPLE_OPQ_EMPTY) + break; + index = tag >> 2; + debug(2, "completed command %d%s", index, + (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : ""); + if (index >= sc->ciss_max_requests) { + ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag); + continue; + } + cr = &(sc->ciss_request[index]); + cc = cr->cr_cc; + cc->header.host_tag = tag; /* not updated by adapter */ + ciss_enqueue_complete(cr, qh); + } + +} + +static void +ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh) +{ + struct ciss_request *cr; + struct ciss_command *cc; + u_int32_t tag, index; + + debug_called(3); + + /* + * Loop quickly taking requests from the adapter and moving them + * to the completed queue. + */ + for (;;) { + tag = sc->ciss_reply[sc->ciss_rqidx]; + if ((tag & CISS_CYCLE_MASK) != sc->ciss_cycle) + break; + index = tag >> 2; + debug(2, "completed command %d%s\n", index, + (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : ""); + if (index < sc->ciss_max_requests) { + cr = &(sc->ciss_request[index]); + cc = cr->cr_cc; + cc->header.host_tag = tag; /* not updated by adapter */ + ciss_enqueue_complete(cr, qh); + } else { + ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag); + } + if (++sc->ciss_rqidx == sc->ciss_max_requests) { + sc->ciss_rqidx = 0; + sc->ciss_cycle ^= 1; + } + } + +} + +/************************************************************************ + * Take an interrupt from the adapter. + */ +static void +ciss_intr(void *arg) +{ + cr_qhead_t qh; + struct ciss_softc *sc = (struct ciss_softc *)arg; + + /* + * The only interrupt we recognise indicates that there are + * entries in the outbound post queue. + */ + STAILQ_INIT(&qh); + ciss_done(sc, &qh); + mtx_lock(&sc->ciss_mtx); + ciss_complete(sc, &qh); + mtx_unlock(&sc->ciss_mtx); +} + +static void +ciss_perf_intr(void *arg) +{ + struct ciss_softc *sc = (struct ciss_softc *)arg; + + /* Clear the interrupt and flush the bridges. Docs say that the flush + * needs to be done twice, which doesn't seem right. + */ + CISS_TL_PERF_CLEAR_INT(sc); + CISS_TL_PERF_FLUSH_INT(sc); + + ciss_perf_msi_intr(sc); +} + +static void +ciss_perf_msi_intr(void *arg) +{ + cr_qhead_t qh; + struct ciss_softc *sc = (struct ciss_softc *)arg; + + STAILQ_INIT(&qh); + ciss_perf_done(sc, &qh); + mtx_lock(&sc->ciss_mtx); + ciss_complete(sc, &qh); + mtx_unlock(&sc->ciss_mtx); +} + + +/************************************************************************ + * Process completed requests. + * + * Requests can be completed in three fashions: + * + * - by invoking a callback function (cr_complete is non-null) + * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set) + * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context + */ +static void +ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh) +{ + struct ciss_request *cr; + + debug_called(2); + + /* + * Loop taking requests off the completed queue and performing + * completion processing on them. + */ + for (;;) { + if ((cr = ciss_dequeue_complete(sc, qh)) == NULL) + break; + ciss_unmap_request(cr); + + if ((cr->cr_flags & CISS_REQ_BUSY) == 0) + ciss_printf(sc, "WARNING: completing non-busy request\n"); + cr->cr_flags &= ~CISS_REQ_BUSY; + + /* + * If the request has a callback, invoke it. + */ + if (cr->cr_complete != NULL) { + cr->cr_complete(cr); + continue; + } + + /* + * If someone is sleeping on this request, wake them up. + */ + if (cr->cr_flags & CISS_REQ_SLEEP) { + cr->cr_flags &= ~CISS_REQ_SLEEP; + wakeup(cr); + continue; + } + + /* + * If someone is polling this request for completion, signal. + */ + if (cr->cr_flags & CISS_REQ_POLL) { + cr->cr_flags &= ~CISS_REQ_POLL; + continue; + } + + /* + * Give up and throw the request back on the free queue. This + * should never happen; resources will probably be lost. + */ + ciss_printf(sc, "WARNING: completed command with no submitter\n"); + ciss_enqueue_free(cr); + } +} + +/************************************************************************ + * Report on the completion status of a request, and pass back SCSI + * and command status values. + */ +static int +_ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func) +{ + struct ciss_command *cc; + struct ciss_error_info *ce; + + debug_called(2); + + cc = cr->cr_cc; + ce = (struct ciss_error_info *)&(cc->sg[0]); + + /* + * We don't consider data under/overrun an error for the Report + * Logical/Physical LUNs commands. + */ + if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) && + ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) || + (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) && + ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) || + (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) || + (cc->cdb.cdb[0] == INQUIRY))) { + cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR; + debug(2, "ignoring irrelevant under/overrun error"); + } + + /* + * Check the command's error bit, if clear, there's no status and + * everything is OK. + */ + if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) { + if (scsi_status != NULL) + *scsi_status = SCSI_STATUS_OK; + if (command_status != NULL) + *command_status = CISS_CMD_STATUS_SUCCESS; + return(0); + } else { + if (command_status != NULL) + *command_status = ce->command_status; + if (scsi_status != NULL) { + if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) { + *scsi_status = ce->scsi_status; + } else { + *scsi_status = -1; + } + } + if (bootverbose) + ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n", + ce->command_status, ciss_name_command_status(ce->command_status), + ce->scsi_status); + if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) { + ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x, function %s\n", + ce->additional_error_info.invalid_command.offense_size, + ce->additional_error_info.invalid_command.offense_offset, + ce->additional_error_info.invalid_command.offense_value, + func); + } + } +#if 0 + ciss_print_request(cr); +#endif + return(1); +} + +/************************************************************************ + * Issue a request and don't return until it's completed. + * + * Depending on adapter status, we may poll or sleep waiting for + * completion. + */ +static int +ciss_synch_request(struct ciss_request *cr, int timeout) +{ + if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) { + return(ciss_wait_request(cr, timeout)); + } else { + return(ciss_poll_request(cr, timeout)); + } +} + +/************************************************************************ + * Issue a request and poll for completion. + * + * Timeout in milliseconds. + */ +static int +ciss_poll_request(struct ciss_request *cr, int timeout) +{ + cr_qhead_t qh; + struct ciss_softc *sc; + int error; + + debug_called(2); + + STAILQ_INIT(&qh); + sc = cr->cr_sc; + cr->cr_flags |= CISS_REQ_POLL; + if ((error = ciss_start(cr)) != 0) + return(error); + + do { + if (sc->ciss_perf) + ciss_perf_done(sc, &qh); + else + ciss_done(sc, &qh); + ciss_complete(sc, &qh); + if (!(cr->cr_flags & CISS_REQ_POLL)) + return(0); + DELAY(1000); + } while (timeout-- >= 0); + return(EWOULDBLOCK); +} + +/************************************************************************ + * Issue a request and sleep waiting for completion. + * + * Timeout in milliseconds. Note that a spurious wakeup will reset + * the timeout. + */ +static int +ciss_wait_request(struct ciss_request *cr, int timeout) +{ + int error; + + debug_called(2); + + cr->cr_flags |= CISS_REQ_SLEEP; + if ((error = ciss_start(cr)) != 0) + return(error); + + while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) { + error = msleep(cr, &cr->cr_sc->ciss_mtx, PRIBIO, "cissREQ", (timeout * hz) / 1000); + } + return(error); +} + +#if 0 +/************************************************************************ + * Abort a request. Note that a potential exists here to race the + * request being completed; the caller must deal with this. + */ +static int +ciss_abort_request(struct ciss_request *ar) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_message_cdb *cmc; + int error; + + debug_called(1); + + /* get a request */ + if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0) + return(error); + + /* build the abort command */ + cc = cr->cr_cc; + cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */ + cc->header.address.physical.target = 0; + cc->header.address.physical.bus = 0; + cc->cdb.cdb_length = sizeof(*cmc); + cc->cdb.type = CISS_CDB_TYPE_MESSAGE; + cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; + cc->cdb.direction = CISS_CDB_DIRECTION_NONE; + cc->cdb.timeout = 30; + + cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]); + cmc->opcode = CISS_OPCODE_MESSAGE_ABORT; + cmc->type = CISS_MESSAGE_ABORT_TASK; + cmc->abort_tag = ar->cr_tag; /* endianness?? */ + + /* + * Send the request and wait for a response. If we believe we + * aborted the request OK, clear the flag that indicates it's + * running. + */ + error = ciss_synch_request(cr, 35 * 1000); + if (!error) + error = ciss_report_request(cr, NULL, NULL); + ciss_release_request(cr); + + return(error); +} +#endif + + +/************************************************************************ + * Fetch and initialise a request + */ +static int +ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp) +{ + struct ciss_request *cr; + + debug_called(2); + + /* + * Get a request and clean it up. + */ + if ((cr = ciss_dequeue_free(sc)) == NULL) + return(ENOMEM); + + cr->cr_data = NULL; + cr->cr_flags = 0; + cr->cr_complete = NULL; + cr->cr_private = NULL; + cr->cr_sg_tag = CISS_SG_MAX; /* Backstop to prevent accidents */ + + ciss_preen_command(cr); + *crp = cr; + return(0); +} + +static void +ciss_preen_command(struct ciss_request *cr) +{ + struct ciss_command *cc; + u_int32_t cmdphys; + + /* + * Clean up the command structure. + * + * Note that we set up the error_info structure here, since the + * length can be overwritten by any command. + */ + cc = cr->cr_cc; + cc->header.sg_in_list = 0; /* kinda inefficient this way */ + cc->header.sg_total = 0; + cc->header.host_tag = cr->cr_tag << 2; + cc->header.host_tag_zeroes = 0; + cmdphys = cr->cr_ccphys; + cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command); + cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command); +} + +/************************************************************************ + * Release a request to the free list. + */ +static void +ciss_release_request(struct ciss_request *cr) +{ + struct ciss_softc *sc; + + debug_called(2); + + sc = cr->cr_sc; + + /* release the request to the free queue */ + ciss_requeue_free(cr); +} + +/************************************************************************ + * Allocate a request that will be used to send a BMIC command. Do some + * of the common setup here to avoid duplicating it everywhere else. + */ +static int +ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, + int opcode, void **bufp, size_t bufsize) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_bmic_cdb *cbc; + void *buf; + int error; + int dataout; + + debug_called(2); + + cr = NULL; + buf = NULL; + + /* + * Get a request. + */ + if ((error = ciss_get_request(sc, &cr)) != 0) + goto out; + + /* + * Allocate data storage if requested, determine the data direction. + */ + dataout = 0; + if ((bufsize > 0) && (bufp != NULL)) { + if (*bufp == NULL) { + if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { + error = ENOMEM; + goto out; + } + } else { + buf = *bufp; + dataout = 1; /* we are given a buffer, so we are writing */ + } + } + + /* + * Build a CISS BMIC command to get the logical drive ID. + */ + cr->cr_data = buf; + cr->cr_length = bufsize; + if (!dataout) + cr->cr_flags = CISS_REQ_DATAIN; + + cc = cr->cr_cc; + cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; + cc->header.address.physical.bus = 0; + cc->header.address.physical.target = 0; + cc->cdb.cdb_length = sizeof(*cbc); + cc->cdb.type = CISS_CDB_TYPE_COMMAND; + cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; + cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ; + cc->cdb.timeout = 0; + + cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); + bzero(cbc, sizeof(*cbc)); + cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ; + cbc->bmic_opcode = opcode; + cbc->size = htons((u_int16_t)bufsize); + +out: + if (error) { + if (cr != NULL) + ciss_release_request(cr); + } else { + *crp = cr; + if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL)) + *bufp = buf; + } + return(error); +} + +/************************************************************************ + * Handle a command passed in from userspace. + */ +static int +ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_error_info *ce; + int error = 0; + + debug_called(1); + + cr = NULL; + + /* + * Get a request. + */ + while (ciss_get_request(sc, &cr) != 0) + msleep(sc, &sc->ciss_mtx, PPAUSE, "cissREQ", hz); + cc = cr->cr_cc; + + /* + * Allocate an in-kernel databuffer if required, copy in user data. + */ + mtx_unlock(&sc->ciss_mtx); + cr->cr_length = ioc->buf_size; + if (ioc->buf_size > 0) { + if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { + error = ENOMEM; + goto out_unlocked; + } + if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) { + debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size); + goto out_unlocked; + } + } + + /* + * Build the request based on the user command. + */ + bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address)); + bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb)); + + /* XXX anything else to populate here? */ + mtx_lock(&sc->ciss_mtx); + + /* + * Run the command. + */ + if ((error = ciss_synch_request(cr, 60 * 1000))) { + debug(0, "request failed - %d", error); + goto out; + } + + /* + * Check to see if the command succeeded. + */ + ce = (struct ciss_error_info *)&(cc->sg[0]); + if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0) + bzero(ce, sizeof(*ce)); + + /* + * Copy the results back to the user. + */ + bcopy(ce, &ioc->error_info, sizeof(*ce)); + mtx_unlock(&sc->ciss_mtx); + if ((ioc->buf_size > 0) && + (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) { + debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size); + goto out_unlocked; + } + + /* done OK */ + error = 0; + +out_unlocked: + mtx_lock(&sc->ciss_mtx); + +out: + if ((cr != NULL) && (cr->cr_data != NULL)) + free(cr->cr_data, CISS_MALLOC_CLASS); + if (cr != NULL) + ciss_release_request(cr); + return(error); +} + +/************************************************************************ + * Map a request into bus-visible space, initialise the scatter/gather + * list. + */ +static int +ciss_map_request(struct ciss_request *cr) +{ + struct ciss_softc *sc; + int error = 0; + + debug_called(2); + + sc = cr->cr_sc; + + /* check that mapping is necessary */ + if (cr->cr_flags & CISS_REQ_MAPPED) + return(0); + + cr->cr_flags |= CISS_REQ_MAPPED; + + bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, + BUS_DMASYNC_PREWRITE); + + if (cr->cr_data != NULL) { + error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap, + cr->cr_data, cr->cr_length, + ciss_request_map_helper, cr, 0); + if (error != 0) + return (error); + } else { + /* + * Post the command to the adapter. + */ + cr->cr_sg_tag = CISS_SG_NONE; + cr->cr_flags |= CISS_REQ_BUSY; + if (sc->ciss_perf) + CISS_TL_PERF_POST_CMD(sc, cr); + else + CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys); + } + + return(0); +} + +static void +ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + struct ciss_command *cc; + struct ciss_request *cr; + struct ciss_softc *sc; + int i; + + debug_called(2); + + cr = (struct ciss_request *)arg; + sc = cr->cr_sc; + cc = cr->cr_cc; + + for (i = 0; i < nseg; i++) { + cc->sg[i].address = segs[i].ds_addr; + cc->sg[i].length = segs[i].ds_len; + cc->sg[i].extension = 0; + } + /* we leave the s/g table entirely within the command */ + cc->header.sg_in_list = nseg; + cc->header.sg_total = nseg; + + if (cr->cr_flags & CISS_REQ_DATAIN) + bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD); + if (cr->cr_flags & CISS_REQ_DATAOUT) + bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE); + + if (nseg == 0) + cr->cr_sg_tag = CISS_SG_NONE; + else if (nseg == 1) + cr->cr_sg_tag = CISS_SG_1; + else if (nseg == 2) + cr->cr_sg_tag = CISS_SG_2; + else if (nseg <= 4) + cr->cr_sg_tag = CISS_SG_4; + else if (nseg <= 8) + cr->cr_sg_tag = CISS_SG_8; + else if (nseg <= 16) + cr->cr_sg_tag = CISS_SG_16; + else if (nseg <= 32) + cr->cr_sg_tag = CISS_SG_32; + else + cr->cr_sg_tag = CISS_SG_MAX; + + /* + * Post the command to the adapter. + */ + cr->cr_flags |= CISS_REQ_BUSY; + if (sc->ciss_perf) + CISS_TL_PERF_POST_CMD(sc, cr); + else + CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys); +} + +/************************************************************************ + * Unmap a request from bus-visible space. + */ +static void +ciss_unmap_request(struct ciss_request *cr) +{ + struct ciss_softc *sc; + + debug_called(2); + + sc = cr->cr_sc; + + /* check that unmapping is necessary */ + if ((cr->cr_flags & CISS_REQ_MAPPED) == 0) + return; + + bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, + BUS_DMASYNC_POSTWRITE); + + if (cr->cr_data == NULL) + goto out; + + if (cr->cr_flags & CISS_REQ_DATAIN) + bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD); + if (cr->cr_flags & CISS_REQ_DATAOUT) + bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE); + + bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap); +out: + cr->cr_flags &= ~CISS_REQ_MAPPED; +} + +/************************************************************************ + * Attach the driver to CAM. + * + * We put all the logical drives on a single SCSI bus. + */ +static int +ciss_cam_init(struct ciss_softc *sc) +{ + int i, maxbus; + + debug_called(1); + + /* + * Allocate a devq. We can reuse this for the masked physical + * devices if we decide to export these as well. + */ + if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests - 2)) == NULL) { + ciss_printf(sc, "can't allocate CAM SIM queue\n"); + return(ENOMEM); + } + + /* + * Create a SIM. + * + * This naturally wastes a bit of memory. The alternative is to allocate + * and register each bus as it is found, and then track them on a linked + * list. Unfortunately, the driver has a few places where it needs to + * look up the SIM based solely on bus number, and it's unclear whether + * a list traversal would work for these situations. + */ + maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus + + CISS_PHYSICAL_BASE); + sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*), + CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); + if (sc->ciss_cam_sim == NULL) { + ciss_printf(sc, "can't allocate memory for controller SIM\n"); + return(ENOMEM); + } + + for (i = 0; i < sc->ciss_max_logical_bus; i++) { + if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, + "ciss", sc, + device_get_unit(sc->ciss_dev), + &sc->ciss_mtx, + 2, + sc->ciss_max_requests - 2, + sc->ciss_cam_devq)) == NULL) { + ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i); + return(ENOMEM); + } + + /* + * Register bus with this SIM. + */ + mtx_lock(&sc->ciss_mtx); + if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) { + if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) { + ciss_printf(sc, "can't register SCSI bus %d\n", i); + mtx_unlock(&sc->ciss_mtx); + return (ENXIO); + } + } + mtx_unlock(&sc->ciss_mtx); + } + + for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + + CISS_PHYSICAL_BASE; i++) { + if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, + "ciss", sc, + device_get_unit(sc->ciss_dev), + &sc->ciss_mtx, 1, + sc->ciss_max_requests - 2, + sc->ciss_cam_devq)) == NULL) { + ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i); + return (ENOMEM); + } + + mtx_lock(&sc->ciss_mtx); + if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) { + ciss_printf(sc, "can't register SCSI bus %d\n", i); + mtx_unlock(&sc->ciss_mtx); + return (ENXIO); + } + mtx_unlock(&sc->ciss_mtx); + } + + return(0); +} + +/************************************************************************ + * Initiate a rescan of the 'logical devices' SIM + */ +static void +ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target) +{ + union ccb *ccb; + + debug_called(1); + + if ((ccb = xpt_alloc_ccb_nowait()) == NULL) { + ciss_printf(sc, "rescan failed (can't allocate CCB)\n"); + return; + } + + if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, + cam_sim_path(sc->ciss_cam_sim[bus]), + target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { + ciss_printf(sc, "rescan failed (can't create path)\n"); + xpt_free_ccb(ccb); + return; + } + xpt_rescan(ccb); + /* scan is now in progress */ +} + +/************************************************************************ + * Handle requests coming from CAM + */ +static void +ciss_cam_action(struct cam_sim *sim, union ccb *ccb) +{ + struct ciss_softc *sc; + struct ccb_scsiio *csio; + int bus, target; + int physical; + + sc = cam_sim_softc(sim); + bus = cam_sim_bus(sim); + csio = (struct ccb_scsiio *)&ccb->csio; + target = csio->ccb_h.target_id; + physical = CISS_IS_PHYSICAL(bus); + + switch (ccb->ccb_h.func_code) { + + /* perform SCSI I/O */ + case XPT_SCSI_IO: + if (!ciss_cam_action_io(sim, csio)) + return; + break; + + /* perform geometry calculations */ + case XPT_CALC_GEOMETRY: + { + struct ccb_calc_geometry *ccg = &ccb->ccg; + struct ciss_ldrive *ld; + + debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); + + ld = NULL; + if (!physical) + ld = &sc->ciss_logical[bus][target]; + + /* + * Use the cached geometry settings unless the fault tolerance + * is invalid. + */ + if (physical || ld->cl_geometry.fault_tolerance == 0xFF) { + u_int32_t secs_per_cylinder; + + ccg->heads = 255; + ccg->secs_per_track = 32; + secs_per_cylinder = ccg->heads * ccg->secs_per_track; + ccg->cylinders = ccg->volume_size / secs_per_cylinder; + } else { + ccg->heads = ld->cl_geometry.heads; + ccg->secs_per_track = ld->cl_geometry.sectors; + ccg->cylinders = ntohs(ld->cl_geometry.cylinders); + } + ccb->ccb_h.status = CAM_REQ_CMP; + break; + } + + /* handle path attribute inquiry */ + case XPT_PATH_INQ: + { + struct ccb_pathinq *cpi = &ccb->cpi; + + debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); + + cpi->version_num = 1; + cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */ + cpi->target_sprt = 0; + cpi->hba_misc = 0; + cpi->max_target = CISS_MAX_LOGICAL; + cpi->max_lun = 0; /* 'logical drive' channel only */ + cpi->initiator_id = CISS_MAX_LOGICAL; + strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); + strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN); + strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); + cpi->unit_number = cam_sim_unit(sim); + cpi->bus_id = cam_sim_bus(sim); + cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ + cpi->transport = XPORT_SPI; + cpi->transport_version = 2; + cpi->protocol = PROTO_SCSI; + cpi->protocol_version = SCSI_REV_2; + cpi->maxio = (CISS_MAX_SG_ELEMENTS - 1) * PAGE_SIZE; + ccb->ccb_h.status = CAM_REQ_CMP; + break; + } + + case XPT_GET_TRAN_SETTINGS: + { + struct ccb_trans_settings *cts = &ccb->cts; + int bus, target; + struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; + struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; + + bus = cam_sim_bus(sim); + target = cts->ccb_h.target_id; + + debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); + /* disconnect always OK */ + cts->protocol = PROTO_SCSI; + cts->protocol_version = SCSI_REV_2; + cts->transport = XPORT_SPI; + cts->transport_version = 2; + + spi->valid = CTS_SPI_VALID_DISC; + spi->flags = CTS_SPI_FLAGS_DISC_ENB; + + scsi->valid = CTS_SCSI_VALID_TQ; + scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; + + cts->ccb_h.status = CAM_REQ_CMP; + break; + } + + default: /* we can't do this */ + debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code); + ccb->ccb_h.status = CAM_REQ_INVALID; + break; + } + + xpt_done(ccb); +} + +/************************************************************************ + * Handle a CAM SCSI I/O request. + */ +static int +ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) +{ + struct ciss_softc *sc; + int bus, target; + struct ciss_request *cr; + struct ciss_command *cc; + int error; + + sc = cam_sim_softc(sim); + bus = cam_sim_bus(sim); + target = csio->ccb_h.target_id; + + debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); + + /* check that the CDB pointer is not to a physical address */ + if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { + debug(3, " CDB pointer is to physical address"); + csio->ccb_h.status = CAM_REQ_CMP_ERR; + } + + /* if there is data transfer, it must be to/from a virtual address */ + if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { + if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ + debug(3, " data pointer is to physical address"); + csio->ccb_h.status = CAM_REQ_CMP_ERR; + } + if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ + debug(3, " data has premature s/g setup"); + csio->ccb_h.status = CAM_REQ_CMP_ERR; + } + } + + /* abandon aborted ccbs or those that have failed validation */ + if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { + debug(3, "abandoning CCB due to abort/validation failure"); + return(EINVAL); + } + + /* handle emulation of some SCSI commands ourself */ + if (ciss_cam_emulate(sc, csio)) + return(0); + + /* + * Get a request to manage this command. If we can't, return the + * ccb, freeze the queue and flag so that we unfreeze it when a + * request completes. + */ + if ((error = ciss_get_request(sc, &cr)) != 0) { + xpt_freeze_simq(sim, 1); + sc->ciss_flags |= CISS_FLAG_BUSY; + csio->ccb_h.status |= CAM_REQUEUE_REQ; + return(error); + } + + /* + * Build the command. + */ + cc = cr->cr_cc; + cr->cr_data = csio->data_ptr; + cr->cr_length = csio->dxfer_len; + cr->cr_complete = ciss_cam_complete; + cr->cr_private = csio; + + /* + * Target the right logical volume. + */ + if (CISS_IS_PHYSICAL(bus)) + cc->header.address = + sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address; + else + cc->header.address = + sc->ciss_logical[bus][target].cl_address; + cc->cdb.cdb_length = csio->cdb_len; + cc->cdb.type = CISS_CDB_TYPE_COMMAND; + cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */ + if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { + cr->cr_flags = CISS_REQ_DATAOUT; + cc->cdb.direction = CISS_CDB_DIRECTION_WRITE; + } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { + cr->cr_flags = CISS_REQ_DATAIN; + cc->cdb.direction = CISS_CDB_DIRECTION_READ; + } else { + cr->cr_flags = 0; + cc->cdb.direction = CISS_CDB_DIRECTION_NONE; + } + cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1; + if (csio->ccb_h.flags & CAM_CDB_POINTER) { + bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len); + } else { + bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len); + } + + /* + * Submit the request to the adapter. + * + * Note that this may fail if we're unable to map the request (and + * if we ever learn a transport layer other than simple, may fail + * if the adapter rejects the command). + */ + if ((error = ciss_start(cr)) != 0) { + xpt_freeze_simq(sim, 1); + csio->ccb_h.status |= CAM_RELEASE_SIMQ; + if (error == EINPROGRESS) { + error = 0; + } else { + csio->ccb_h.status |= CAM_REQUEUE_REQ; + ciss_release_request(cr); + } + return(error); + } + + return(0); +} + +/************************************************************************ + * Emulate SCSI commands the adapter doesn't handle as we might like. + */ +static int +ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio) +{ + int bus, target; + u_int8_t opcode; + + target = csio->ccb_h.target_id; + bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path)); + opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ? + *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]; + + if (CISS_IS_PHYSICAL(bus)) { + if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) { + csio->ccb_h.status |= CAM_SEL_TIMEOUT; + xpt_done((union ccb *)csio); + return(1); + } else + return(0); + } + + /* + * Handle requests for volumes that don't exist or are not online. + * A selection timeout is slightly better than an illegal request. + * Other errors might be better. + */ + if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) { + csio->ccb_h.status |= CAM_SEL_TIMEOUT; + xpt_done((union ccb *)csio); + return(1); + } + + /* if we have to fake Synchronise Cache */ + if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) { + /* + * If this is a Synchronise Cache command, typically issued when + * a device is closed, flush the adapter and complete now. + */ + if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? + *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) { + ciss_flush_adapter(sc); + csio->ccb_h.status |= CAM_REQ_CMP; + xpt_done((union ccb *)csio); + return(1); + } + } + + return(0); +} + +/************************************************************************ + * Check for possibly-completed commands. + */ +static void +ciss_cam_poll(struct cam_sim *sim) +{ + cr_qhead_t qh; + struct ciss_softc *sc = cam_sim_softc(sim); + + debug_called(2); + + STAILQ_INIT(&qh); + if (sc->ciss_perf) + ciss_perf_done(sc, &qh); + else + ciss_done(sc, &qh); + ciss_complete(sc, &qh); +} + +/************************************************************************ + * Handle completion of a command - pass results back through the CCB + */ +static void +ciss_cam_complete(struct ciss_request *cr) +{ + struct ciss_softc *sc; + struct ciss_command *cc; + struct ciss_error_info *ce; + struct ccb_scsiio *csio; + int scsi_status; + int command_status; + + debug_called(2); + + sc = cr->cr_sc; + cc = cr->cr_cc; + ce = (struct ciss_error_info *)&(cc->sg[0]); + csio = (struct ccb_scsiio *)cr->cr_private; + + /* + * Extract status values from request. + */ + ciss_report_request(cr, &command_status, &scsi_status); + csio->scsi_status = scsi_status; + + /* + * Handle specific SCSI status values. + */ + switch(scsi_status) { + /* no status due to adapter error */ + case -1: + debug(0, "adapter error"); + csio->ccb_h.status |= CAM_REQ_CMP_ERR; + break; + + /* no status due to command completed OK */ + case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */ + debug(2, "SCSI_STATUS_OK"); + csio->ccb_h.status |= CAM_REQ_CMP; + break; + + /* check condition, sense data included */ + case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */ + debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n", + ce->sense_length, ce->residual_count); + bzero(&csio->sense_data, SSD_FULL_SIZE); + bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length); + if (csio->sense_len > ce->sense_length) + csio->sense_resid = csio->sense_len - ce->sense_length; + else + csio->sense_resid = 0; + csio->resid = ce->residual_count; + csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; +#ifdef CISS_DEBUG + { + struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0]; + debug(0, "sense key %x", scsi_get_sense_key(sns, csio->sense_len - + csio->sense_resid, /*show_errors*/ 1)); + } +#endif + break; + + case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */ + debug(0, "SCSI_STATUS_BUSY"); + csio->ccb_h.status |= CAM_SCSI_BUSY; + break; + + default: + debug(0, "unknown status 0x%x", csio->scsi_status); + csio->ccb_h.status |= CAM_REQ_CMP_ERR; + break; + } + + /* handle post-command fixup */ + ciss_cam_complete_fixup(sc, csio); + + ciss_release_request(cr); + if (sc->ciss_flags & CISS_FLAG_BUSY) { + sc->ciss_flags &= ~CISS_FLAG_BUSY; + if (csio->ccb_h.status & CAM_RELEASE_SIMQ) + xpt_release_simq(xpt_path_sim(csio->ccb_h.path), 0); + else + csio->ccb_h.status |= CAM_RELEASE_SIMQ; + } + xpt_done((union ccb *)csio); +} + +/******************************************************************************** + * Fix up the result of some commands here. + */ +static void +ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio) +{ + struct scsi_inquiry_data *inq; + struct ciss_ldrive *cl; + uint8_t *cdb; + int bus, target; + + cdb = (csio->ccb_h.flags & CAM_CDB_POINTER) ? + (uint8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes; + if (cdb[0] == INQUIRY && + (cdb[1] & SI_EVPD) == 0 && + (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN && + csio->dxfer_len >= SHORT_INQUIRY_LENGTH) { + + inq = (struct scsi_inquiry_data *)csio->data_ptr; + target = csio->ccb_h.target_id; + bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path)); + + /* + * Don't let hard drives be seen by the DA driver. They will still be + * attached by the PASS driver. + */ + if (CISS_IS_PHYSICAL(bus)) { + if (SID_TYPE(inq) == T_DIRECT) + inq->device = (inq->device & 0xe0) | T_NODEVICE; + return; + } + + cl = &sc->ciss_logical[bus][target]; + + padstr(inq->vendor, "COMPAQ", 8); + padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8); + padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16); + } +} + + +/******************************************************************************** + * Find a peripheral attached at (target) + */ +static struct cam_periph * +ciss_find_periph(struct ciss_softc *sc, int bus, int target) +{ + struct cam_periph *periph; + struct cam_path *path; + int status; + + status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]), + target, 0); + if (status == CAM_REQ_CMP) { + periph = cam_periph_find(path, NULL); + xpt_free_path(path); + } else { + periph = NULL; + } + return(periph); +} + +/******************************************************************************** + * Name the device at (target) + * + * XXX is this strictly correct? + */ +static int +ciss_name_device(struct ciss_softc *sc, int bus, int target) +{ + struct cam_periph *periph; + + if (CISS_IS_PHYSICAL(bus)) + return (0); + if ((periph = ciss_find_periph(sc, bus, target)) != NULL) { + sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d", + periph->periph_name, periph->unit_number); + return(0); + } + sc->ciss_logical[bus][target].cl_name[0] = 0; + return(ENOENT); +} + +/************************************************************************ + * Periodic status monitoring. + */ +static void +ciss_periodic(void *arg) +{ + struct ciss_softc *sc; + struct ciss_request *cr = NULL; + struct ciss_command *cc = NULL; + int error = 0; + + debug_called(1); + + sc = (struct ciss_softc *)arg; + + /* + * Check the adapter heartbeat. + */ + if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) { + sc->ciss_heart_attack++; + debug(0, "adapter heart attack in progress 0x%x/%d", + sc->ciss_heartbeat, sc->ciss_heart_attack); + if (sc->ciss_heart_attack == 3) { + ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n"); + ciss_disable_adapter(sc); + return; + } + } else { + sc->ciss_heartbeat = sc->ciss_cfg->heartbeat; + sc->ciss_heart_attack = 0; + debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat); + } + + /* + * Send the NOP message and wait for a response. + */ + if (ciss_nop_message_heartbeat != 0 && (error = ciss_get_request(sc, &cr)) == 0) { + cc = cr->cr_cc; + cr->cr_complete = ciss_nop_complete; + cc->cdb.cdb_length = 1; + cc->cdb.type = CISS_CDB_TYPE_MESSAGE; + cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; + cc->cdb.direction = CISS_CDB_DIRECTION_WRITE; + cc->cdb.timeout = 0; + cc->cdb.cdb[0] = CISS_OPCODE_MESSAGE_NOP; + + if ((error = ciss_start(cr)) != 0) { + ciss_printf(sc, "SENDING NOP MESSAGE FAILED\n"); + } + } + + /* + * If the notify event request has died for some reason, or has + * not started yet, restart it. + */ + if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) { + debug(0, "(re)starting Event Notify chain"); + ciss_notify_event(sc); + } + + /* + * Reschedule. + */ + callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz, ciss_periodic, sc); +} + +static void +ciss_nop_complete(struct ciss_request *cr) +{ + struct ciss_softc *sc; + static int first_time = 1; + + sc = cr->cr_sc; + if (ciss_report_request(cr, NULL, NULL) != 0) { + if (first_time == 1) { + first_time = 0; + ciss_printf(sc, "SENDING NOP MESSAGE FAILED (not logging anymore)\n"); + } + } + + ciss_release_request(cr); +} + +/************************************************************************ + * Disable the adapter. + * + * The all requests in completed queue is failed with hardware error. + * This will cause failover in a multipath configuration. + */ +static void +ciss_disable_adapter(struct ciss_softc *sc) +{ + cr_qhead_t qh; + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_error_info *ce; + int i; + + CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc); + pci_disable_busmaster(sc->ciss_dev); + sc->ciss_flags &= ~CISS_FLAG_RUNNING; + + for (i = 1; i < sc->ciss_max_requests; i++) { + cr = &sc->ciss_request[i]; + if ((cr->cr_flags & CISS_REQ_BUSY) == 0) + continue; + + cc = cr->cr_cc; + ce = (struct ciss_error_info *)&(cc->sg[0]); + ce->command_status = CISS_CMD_STATUS_HARDWARE_ERROR; + ciss_enqueue_complete(cr, &qh); + } + + for (;;) { + if ((cr = ciss_dequeue_complete(sc, &qh)) == NULL) + break; + + /* + * If the request has a callback, invoke it. + */ + if (cr->cr_complete != NULL) { + cr->cr_complete(cr); + continue; + } + + /* + * If someone is sleeping on this request, wake them up. + */ + if (cr->cr_flags & CISS_REQ_SLEEP) { + cr->cr_flags &= ~CISS_REQ_SLEEP; + wakeup(cr); + continue; + } + } +} + +/************************************************************************ + * Request a notification response from the adapter. + * + * If (cr) is NULL, this is the first request of the adapter, so + * reset the adapter's message pointer and start with the oldest + * message available. + */ +static void +ciss_notify_event(struct ciss_softc *sc) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_notify_cdb *cnc; + int error; + + debug_called(1); + + cr = sc->ciss_periodic_notify; + + /* get a request if we don't already have one */ + if (cr == NULL) { + if ((error = ciss_get_request(sc, &cr)) != 0) { + debug(0, "can't get notify event request"); + goto out; + } + sc->ciss_periodic_notify = cr; + cr->cr_complete = ciss_notify_complete; + debug(1, "acquired request %d", cr->cr_tag); + } + + /* + * Get a databuffer if we don't already have one, note that the + * adapter command wants a larger buffer than the actual + * structure. + */ + if (cr->cr_data == NULL) { + if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { + debug(0, "can't get notify event request buffer"); + error = ENOMEM; + goto out; + } + cr->cr_length = CISS_NOTIFY_DATA_SIZE; + } + + /* re-setup the request's command (since we never release it) XXX overkill*/ + ciss_preen_command(cr); + + /* (re)build the notify event command */ + cc = cr->cr_cc; + cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; + cc->header.address.physical.bus = 0; + cc->header.address.physical.target = 0; + + cc->cdb.cdb_length = sizeof(*cnc); + cc->cdb.type = CISS_CDB_TYPE_COMMAND; + cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; + cc->cdb.direction = CISS_CDB_DIRECTION_READ; + cc->cdb.timeout = 0; /* no timeout, we hope */ + + cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); + bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE); + cnc->opcode = CISS_OPCODE_READ; + cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT; + cnc->timeout = 0; /* no timeout, we hope */ + cnc->synchronous = 0; + cnc->ordered = 0; + cnc->seek_to_oldest = 0; + if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0) + cnc->new_only = 1; + else + cnc->new_only = 0; + cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); + + /* submit the request */ + error = ciss_start(cr); + + out: + if (error) { + if (cr != NULL) { + if (cr->cr_data != NULL) + free(cr->cr_data, CISS_MALLOC_CLASS); + ciss_release_request(cr); + } + sc->ciss_periodic_notify = NULL; + debug(0, "can't submit notify event request"); + sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; + } else { + debug(1, "notify event submitted"); + sc->ciss_flags |= CISS_FLAG_NOTIFY_OK; + } +} + +static void +ciss_notify_complete(struct ciss_request *cr) +{ + struct ciss_command *cc; + struct ciss_notify *cn; + struct ciss_softc *sc; + int scsi_status; + int command_status; + debug_called(1); + + cc = cr->cr_cc; + cn = (struct ciss_notify *)cr->cr_data; + sc = cr->cr_sc; + + /* + * Report request results, decode status. + */ + ciss_report_request(cr, &command_status, &scsi_status); + + /* + * Abort the chain on a fatal error. + * + * XXX which of these are actually errors? + */ + if ((command_status != CISS_CMD_STATUS_SUCCESS) && + (command_status != CISS_CMD_STATUS_TARGET_STATUS) && + (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */ + ciss_printf(sc, "fatal error in Notify Event request (%s)\n", + ciss_name_command_status(command_status)); + ciss_release_request(cr); + sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; + return; + } + + /* + * If the adapter gave us a text message, print it. + */ + if (cn->message[0] != 0) + ciss_printf(sc, "*** %.80s\n", cn->message); + + debug(0, "notify event class %d subclass %d detail %d", + cn->class, cn->subclass, cn->detail); + + /* + * If the response indicates that the notifier has been aborted, + * release the notifier command. + */ + if ((cn->class == CISS_NOTIFY_NOTIFIER) && + (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) && + (cn->detail == 1)) { + debug(0, "notifier exiting"); + sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; + ciss_release_request(cr); + sc->ciss_periodic_notify = NULL; + wakeup(&sc->ciss_periodic_notify); + } else { + /* Handle notify events in a kernel thread */ + ciss_enqueue_notify(cr); + sc->ciss_periodic_notify = NULL; + wakeup(&sc->ciss_periodic_notify); + wakeup(&sc->ciss_notify); + } + /* + * Send a new notify event command, if we're not aborting. + */ + if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) { + ciss_notify_event(sc); + } +} + +/************************************************************************ + * Abort the Notify Event chain. + * + * Note that we can't just abort the command in progress; we have to + * explicitly issue an Abort Notify Event command in order for the + * adapter to clean up correctly. + * + * If we are called with CISS_FLAG_ABORTING set in the adapter softc, + * the chain will not restart itself. + */ +static int +ciss_notify_abort(struct ciss_softc *sc) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_notify_cdb *cnc; + int error, command_status, scsi_status; + + debug_called(1); + + cr = NULL; + error = 0; + + /* verify that there's an outstanding command */ + if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) + goto out; + + /* get a command to issue the abort with */ + if ((error = ciss_get_request(sc, &cr))) + goto out; + + /* get a buffer for the result */ + if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { + debug(0, "can't get notify event request buffer"); + error = ENOMEM; + goto out; + } + cr->cr_length = CISS_NOTIFY_DATA_SIZE; + + /* build the CDB */ + cc = cr->cr_cc; + cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; + cc->header.address.physical.bus = 0; + cc->header.address.physical.target = 0; + cc->cdb.cdb_length = sizeof(*cnc); + cc->cdb.type = CISS_CDB_TYPE_COMMAND; + cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; + cc->cdb.direction = CISS_CDB_DIRECTION_READ; + cc->cdb.timeout = 0; /* no timeout, we hope */ + + cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); + bzero(cnc, sizeof(*cnc)); + cnc->opcode = CISS_OPCODE_WRITE; + cnc->command = CISS_COMMAND_ABORT_NOTIFY; + cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); + + ciss_print_request(cr); + + /* + * Submit the request and wait for it to complete. + */ + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error); + goto out; + } + + /* + * Check response. + */ + ciss_report_request(cr, &command_status, &scsi_status); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: + break; + case CISS_CMD_STATUS_INVALID_COMMAND: + /* + * Some older adapters don't support the CISS version of this + * command. Fall back to using the BMIC version. + */ + error = ciss_notify_abort_bmic(sc); + if (error != 0) + goto out; + break; + + case CISS_CMD_STATUS_TARGET_STATUS: + /* + * This can happen if the adapter thinks there wasn't an outstanding + * Notify Event command but we did. We clean up here. + */ + if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) { + if (sc->ciss_periodic_notify != NULL) + ciss_release_request(sc->ciss_periodic_notify); + error = 0; + goto out; + } + /* FALLTHROUGH */ + + default: + ciss_printf(sc, "Abort Notify Event command failed (%s)\n", + ciss_name_command_status(command_status)); + error = EIO; + goto out; + } + + /* + * Sleep waiting for the notifier command to complete. Note + * that if it doesn't, we may end up in a bad situation, since + * the adapter may deliver it later. Also note that the adapter + * requires the Notify Event command to be cancelled in order to + * maintain internal bookkeeping. + */ + while (sc->ciss_periodic_notify != NULL) { + error = msleep(&sc->ciss_periodic_notify, &sc->ciss_mtx, PRIBIO, "cissNEA", hz * 5); + if (error == EWOULDBLOCK) { + ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n"); + break; + } + } + + out: + /* release the cancel request */ + if (cr != NULL) { + if (cr->cr_data != NULL) + free(cr->cr_data, CISS_MALLOC_CLASS); + ciss_release_request(cr); + } + if (error == 0) + sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; + return(error); +} + +/************************************************************************ + * Abort the Notify Event chain using a BMIC command. + */ +static int +ciss_notify_abort_bmic(struct ciss_softc *sc) +{ + struct ciss_request *cr; + int error, command_status; + + debug_called(1); + + cr = NULL; + error = 0; + + /* verify that there's an outstanding command */ + if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) + goto out; + + /* + * Build a BMIC command to cancel the Notify on Event command. + * + * Note that we are sending a CISS opcode here. Odd. + */ + if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY, + NULL, 0)) != 0) + goto out; + + /* + * Submit the request and wait for it to complete. + */ + if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { + ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error); + goto out; + } + + /* + * Check response. + */ + ciss_report_request(cr, &command_status, NULL); + switch(command_status) { + case CISS_CMD_STATUS_SUCCESS: + break; + default: + ciss_printf(sc, "error cancelling Notify on Event (%s)\n", + ciss_name_command_status(command_status)); + error = EIO; + goto out; + } + +out: + if (cr != NULL) + ciss_release_request(cr); + return(error); +} + +/************************************************************************ + * Handle rescanning all the logical volumes when a notify event + * causes the drives to come online or offline. + */ +static void +ciss_notify_rescan_logical(struct ciss_softc *sc) +{ + struct ciss_lun_report *cll; + struct ciss_ldrive *ld; + int i, j, ndrives; + + /* + * We must rescan all logical volumes to get the right logical + * drive address. + */ + cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS, + CISS_MAX_LOGICAL); + if (cll == NULL) + return; + + ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); + + /* + * Delete any of the drives which were destroyed by the + * firmware. + */ + for (i = 0; i < sc->ciss_max_logical_bus; i++) { + for (j = 0; j < CISS_MAX_LOGICAL; j++) { + ld = &sc->ciss_logical[i][j]; + + if (ld->cl_update == 0) + continue; + + if (ld->cl_status != CISS_LD_ONLINE) { + ciss_cam_rescan_target(sc, i, j); + ld->cl_update = 0; + if (ld->cl_ldrive) + free(ld->cl_ldrive, CISS_MALLOC_CLASS); + if (ld->cl_lstatus) + free(ld->cl_lstatus, CISS_MALLOC_CLASS); + + ld->cl_ldrive = NULL; + ld->cl_lstatus = NULL; + } + } + } + + /* + * Scan for new drives. + */ + for (i = 0; i < ndrives; i++) { + int bus, target; + + bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun); + target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun); + ld = &sc->ciss_logical[bus][target]; + + if (ld->cl_update == 0) + continue; + + ld->cl_update = 0; + ld->cl_address = cll->lun[i]; + ld->cl_controller = &sc->ciss_controllers[bus]; + if (ciss_identify_logical(sc, ld) == 0) { + ciss_cam_rescan_target(sc, bus, target); + } + } + free(cll, CISS_MALLOC_CLASS); +} + +/************************************************************************ + * Handle a notify event relating to the status of a logical drive. + * + * XXX need to be able to defer some of these to properly handle + * calling the "ID Physical drive" command, unless the 'extended' + * drive IDs are always in BIG_MAP format. + */ +static void +ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn) +{ + struct ciss_ldrive *ld; + int ostatus, bus, target; + + debug_called(2); + + bus = cn->device.physical.bus; + target = cn->data.logical_status.logical_drive; + ld = &sc->ciss_logical[bus][target]; + + switch (cn->subclass) { + case CISS_NOTIFY_LOGICAL_STATUS: + switch (cn->detail) { + case 0: + ciss_name_device(sc, bus, target); + ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n", + cn->data.logical_status.logical_drive, ld->cl_name, + ciss_name_ldrive_status(cn->data.logical_status.previous_state), + ciss_name_ldrive_status(cn->data.logical_status.new_state), + cn->data.logical_status.spare_state, + "\20\1configured\2rebuilding\3failed\4in use\5available\n"); + + /* + * Update our idea of the drive's status. + */ + ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state); + ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); + if (ld->cl_lstatus != NULL) + ld->cl_lstatus->status = cn->data.logical_status.new_state; + + /* + * Have CAM rescan the drive if its status has changed. + */ + if (ostatus != ld->cl_status) { + ld->cl_update = 1; + ciss_notify_rescan_logical(sc); + } + + break; + + case 1: /* logical drive has recognised new media, needs Accept Media Exchange */ + ciss_name_device(sc, bus, target); + ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n", + cn->data.logical_status.logical_drive, ld->cl_name); + ciss_accept_media(sc, ld); + + ld->cl_update = 1; + ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); + ciss_notify_rescan_logical(sc); + break; + + case 2: + case 3: + ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n", + cn->data.rebuild_aborted.logical_drive, + ld->cl_name, + (cn->detail == 2) ? "read" : "write"); + break; + } + break; + + case CISS_NOTIFY_LOGICAL_ERROR: + if (cn->detail == 0) { + ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n", + cn->data.io_error.logical_drive, + ld->cl_name, + cn->data.io_error.failure_bus, + cn->data.io_error.failure_drive); + /* XXX should we take the drive down at this point, or will we be told? */ + } + break; + + case CISS_NOTIFY_LOGICAL_SURFACE: + if (cn->detail == 0) + ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n", + cn->data.consistency_completed.logical_drive, + ld->cl_name); + break; + } +} + +/************************************************************************ + * Handle a notify event relating to the status of a physical drive. + */ +static void +ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn) +{ +} + +/************************************************************************ + * Handle a notify event relating to the status of a physical drive. + */ +static void +ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn) +{ + struct ciss_lun_report *cll = NULL; + int bus, target; + + switch (cn->subclass) { + case CISS_NOTIFY_HOTPLUG_PHYSICAL: + case CISS_NOTIFY_HOTPLUG_NONDISK: + bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number); + target = + CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number); + + if (cn->detail == 0) { + /* + * Mark the device offline so that it'll start producing selection + * timeouts to the upper layer. + */ + if ((bus >= 0) && (target >= 0)) + sc->ciss_physical[bus][target].cp_online = 0; + } else { + /* + * Rescan the physical lun list for new items + */ + cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS, + CISS_MAX_PHYSICAL); + if (cll == NULL) { + ciss_printf(sc, "Warning, cannot get physical lun list\n"); + break; + } + ciss_filter_physical(sc, cll); + } + break; + + default: + ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass); + return; + } + + if (cll != NULL) + free(cll, CISS_MALLOC_CLASS); +} + +/************************************************************************ + * Handle deferred processing of notify events. Notify events may need + * sleep which is unsafe during an interrupt. + */ +static void +ciss_notify_thread(void *arg) +{ + struct ciss_softc *sc; + struct ciss_request *cr; + struct ciss_notify *cn; + + sc = (struct ciss_softc *)arg; +#if __FreeBSD_version >= 500000 + mtx_lock(&sc->ciss_mtx); +#endif + + for (;;) { + if (STAILQ_EMPTY(&sc->ciss_notify) != 0 && + (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) { + msleep(&sc->ciss_notify, &sc->ciss_mtx, PUSER, "idle", 0); + } + + if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) + break; + + cr = ciss_dequeue_notify(sc); + + if (cr == NULL) + panic("cr null"); + cn = (struct ciss_notify *)cr->cr_data; + + switch (cn->class) { + case CISS_NOTIFY_HOTPLUG: + ciss_notify_hotplug(sc, cn); + break; + case CISS_NOTIFY_LOGICAL: + ciss_notify_logical(sc, cn); + break; + case CISS_NOTIFY_PHYSICAL: + ciss_notify_physical(sc, cn); + break; + } + + ciss_release_request(cr); + + } + sc->ciss_notify_thread = NULL; + wakeup(&sc->ciss_notify_thread); + +#if __FreeBSD_version >= 500000 + mtx_unlock(&sc->ciss_mtx); +#endif + kproc_exit(0); +} + +/************************************************************************ + * Start the notification kernel thread. + */ +static void +ciss_spawn_notify_thread(struct ciss_softc *sc) +{ + +#if __FreeBSD_version > 500005 + if (kproc_create((void(*)(void *))ciss_notify_thread, sc, + &sc->ciss_notify_thread, 0, 0, "ciss_notify%d", + device_get_unit(sc->ciss_dev))) +#else + if (kproc_create((void(*)(void *))ciss_notify_thread, sc, + &sc->ciss_notify_thread, "ciss_notify%d", + device_get_unit(sc->ciss_dev))) +#endif + panic("Could not create notify thread\n"); +} + +/************************************************************************ + * Kill the notification kernel thread. + */ +static void +ciss_kill_notify_thread(struct ciss_softc *sc) +{ + + if (sc->ciss_notify_thread == NULL) + return; + + sc->ciss_flags |= CISS_FLAG_THREAD_SHUT; + wakeup(&sc->ciss_notify); + msleep(&sc->ciss_notify_thread, &sc->ciss_mtx, PUSER, "thtrm", 0); +} + +/************************************************************************ + * Print a request. + */ +static void +ciss_print_request(struct ciss_request *cr) +{ + struct ciss_softc *sc; + struct ciss_command *cc; + int i; + + sc = cr->cr_sc; + cc = cr->cr_cc; + + ciss_printf(sc, "REQUEST @ %p\n", cr); + ciss_printf(sc, " data %p/%d tag %d flags %b\n", + cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags, + "\20\1mapped\2sleep\3poll\4dataout\5datain\n"); + ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n", + cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag); + switch(cc->header.address.mode.mode) { + case CISS_HDR_ADDRESS_MODE_PERIPHERAL: + case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL: + ciss_printf(sc, " physical bus %d target %d\n", + cc->header.address.physical.bus, cc->header.address.physical.target); + break; + case CISS_HDR_ADDRESS_MODE_LOGICAL: + ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun); + break; + } + ciss_printf(sc, " %s cdb length %d type %s attribute %s\n", + (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" : + (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" : + (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??", + cc->cdb.cdb_length, + (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" : + (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??", + (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" : + (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" : + (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" : + (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" : + (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??"); + ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " "); + + if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) { + /* XXX print error info */ + } else { + /* since we don't use chained s/g, don't support it here */ + for (i = 0; i < cc->header.sg_in_list; i++) { + if ((i % 4) == 0) + ciss_printf(sc, " "); + printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length); + if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1))) + printf("\n"); + } + } +} + +/************************************************************************ + * Print information about the status of a logical drive. + */ +static void +ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld) +{ + int bus, target, i; + + if (ld->cl_lstatus == NULL) { + printf("does not exist\n"); + return; + } + + /* print drive status */ + switch(ld->cl_lstatus->status) { + case CISS_LSTATUS_OK: + printf("online\n"); + break; + case CISS_LSTATUS_INTERIM_RECOVERY: + printf("in interim recovery mode\n"); + break; + case CISS_LSTATUS_READY_RECOVERY: + printf("ready to begin recovery\n"); + break; + case CISS_LSTATUS_RECOVERING: + bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); + target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); + printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n", + bus, target, ld->cl_lstatus->blocks_to_recover); + break; + case CISS_LSTATUS_EXPANDING: + printf("being expanded, %u blocks remaining\n", + ld->cl_lstatus->blocks_to_recover); + break; + case CISS_LSTATUS_QUEUED_FOR_EXPANSION: + printf("queued for expansion\n"); + break; + case CISS_LSTATUS_FAILED: + printf("queued for expansion\n"); + break; + case CISS_LSTATUS_WRONG_PDRIVE: + printf("wrong physical drive inserted\n"); + break; + case CISS_LSTATUS_MISSING_PDRIVE: + printf("missing a needed physical drive\n"); + break; + case CISS_LSTATUS_BECOMING_READY: + printf("becoming ready\n"); + break; + } + + /* print failed physical drives */ + for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) { + bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]); + target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]); + if (bus == -1) + continue; + ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target, + ld->cl_lstatus->drive_failure_map[i]); + } +} + +#ifdef CISS_DEBUG +/************************************************************************ + * Print information about the controller/driver. + */ +static void +ciss_print_adapter(struct ciss_softc *sc) +{ + int i, j; + + ciss_printf(sc, "ADAPTER:\n"); + for (i = 0; i < CISSQ_COUNT; i++) { + ciss_printf(sc, "%s %d/%d\n", + i == 0 ? "free" : + i == 1 ? "busy" : "complete", + sc->ciss_qstat[i].q_length, + sc->ciss_qstat[i].q_max); + } + ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests); + ciss_printf(sc, "flags %b\n", sc->ciss_flags, + "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n"); + + for (i = 0; i < sc->ciss_max_logical_bus; i++) { + for (j = 0; j < CISS_MAX_LOGICAL; j++) { + ciss_printf(sc, "LOGICAL DRIVE %d: ", i); + ciss_print_ldrive(sc, &sc->ciss_logical[i][j]); + } + } + + /* XXX Should physical drives be printed out here? */ + + for (i = 1; i < sc->ciss_max_requests; i++) + ciss_print_request(sc->ciss_request + i); +} + +/* DDB hook */ +static void +ciss_print0(void) +{ + struct ciss_softc *sc; + + sc = devclass_get_softc(devclass_find("ciss"), 0); + if (sc == NULL) { + printf("no ciss controllers\n"); + } else { + ciss_print_adapter(sc); + } +} +#endif + +/************************************************************************ + * Return a name for a logical drive status value. + */ +static const char * +ciss_name_ldrive_status(int status) +{ + switch (status) { + case CISS_LSTATUS_OK: + return("OK"); + case CISS_LSTATUS_FAILED: + return("failed"); + case CISS_LSTATUS_NOT_CONFIGURED: + return("not configured"); + case CISS_LSTATUS_INTERIM_RECOVERY: + return("interim recovery"); + case CISS_LSTATUS_READY_RECOVERY: + return("ready for recovery"); + case CISS_LSTATUS_RECOVERING: + return("recovering"); + case CISS_LSTATUS_WRONG_PDRIVE: + return("wrong physical drive inserted"); + case CISS_LSTATUS_MISSING_PDRIVE: + return("missing physical drive"); + case CISS_LSTATUS_EXPANDING: + return("expanding"); + case CISS_LSTATUS_BECOMING_READY: + return("becoming ready"); + case CISS_LSTATUS_QUEUED_FOR_EXPANSION: + return("queued for expansion"); + } + return("unknown status"); +} + +/************************************************************************ + * Return an online/offline/nonexistent value for a logical drive + * status value. + */ +static int +ciss_decode_ldrive_status(int status) +{ + switch(status) { + case CISS_LSTATUS_NOT_CONFIGURED: + return(CISS_LD_NONEXISTENT); + + case CISS_LSTATUS_OK: + case CISS_LSTATUS_INTERIM_RECOVERY: + case CISS_LSTATUS_READY_RECOVERY: + case CISS_LSTATUS_RECOVERING: + case CISS_LSTATUS_EXPANDING: + case CISS_LSTATUS_QUEUED_FOR_EXPANSION: + return(CISS_LD_ONLINE); + + case CISS_LSTATUS_FAILED: + case CISS_LSTATUS_WRONG_PDRIVE: + case CISS_LSTATUS_MISSING_PDRIVE: + case CISS_LSTATUS_BECOMING_READY: + default: + return(CISS_LD_OFFLINE); + } +} + + +/************************************************************************ + * Return a name for a logical drive's organisation. + */ +static const char * +ciss_name_ldrive_org(int org) +{ + switch(org) { + case CISS_LDRIVE_RAID0: + return("RAID 0"); + case CISS_LDRIVE_RAID1: + return("RAID 1(1+0)"); + case CISS_LDRIVE_RAID4: + return("RAID 4"); + case CISS_LDRIVE_RAID5: + return("RAID 5"); + case CISS_LDRIVE_RAID51: + return("RAID 5+1"); + case CISS_LDRIVE_RAIDADG: + return("RAID ADG"); + } + return("unkown"); +} + +/************************************************************************ + * Return a name for a command status value. + */ +static const char * +ciss_name_command_status(int status) +{ + switch(status) { + case CISS_CMD_STATUS_SUCCESS: + return("success"); + case CISS_CMD_STATUS_TARGET_STATUS: + return("target status"); + case CISS_CMD_STATUS_DATA_UNDERRUN: + return("data underrun"); + case CISS_CMD_STATUS_DATA_OVERRUN: + return("data overrun"); + case CISS_CMD_STATUS_INVALID_COMMAND: + return("invalid command"); + case CISS_CMD_STATUS_PROTOCOL_ERROR: + return("protocol error"); + case CISS_CMD_STATUS_HARDWARE_ERROR: + return("hardware error"); + case CISS_CMD_STATUS_CONNECTION_LOST: + return("connection lost"); + case CISS_CMD_STATUS_ABORTED: + return("aborted"); + case CISS_CMD_STATUS_ABORT_FAILED: + return("abort failed"); + case CISS_CMD_STATUS_UNSOLICITED_ABORT: + return("unsolicited abort"); + case CISS_CMD_STATUS_TIMEOUT: + return("timeout"); + case CISS_CMD_STATUS_UNABORTABLE: + return("unabortable"); + } + return("unknown status"); +} + +/************************************************************************ + * Handle an open on the control device. + */ +static int +ciss_open(struct cdev *dev, int flags, int fmt, struct thread *p) +{ + struct ciss_softc *sc; + + debug_called(1); + + sc = (struct ciss_softc *)dev->si_drv1; + + /* we might want to veto if someone already has us open */ + + mtx_lock(&sc->ciss_mtx); + sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN; + mtx_unlock(&sc->ciss_mtx); + return(0); +} + +/************************************************************************ + * Handle the last close on the control device. + */ +static int +ciss_close(struct cdev *dev, int flags, int fmt, struct thread *p) +{ + struct ciss_softc *sc; + + debug_called(1); + + sc = (struct ciss_softc *)dev->si_drv1; + + mtx_lock(&sc->ciss_mtx); + sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN; + mtx_unlock(&sc->ciss_mtx); + return (0); +} + +/******************************************************************************** + * Handle adapter-specific control operations. + * + * Note that the API here is compatible with the Linux driver, in order to + * simplify the porting of Compaq's userland tools. + */ +static int +ciss_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *p) +{ + struct ciss_softc *sc; + IOCTL_Command_struct *ioc = (IOCTL_Command_struct *)addr; +#ifdef __amd64__ + IOCTL_Command_struct32 *ioc32 = (IOCTL_Command_struct32 *)addr; + IOCTL_Command_struct ioc_swab; +#endif + int error; + + debug_called(1); + + sc = (struct ciss_softc *)dev->si_drv1; + error = 0; + mtx_lock(&sc->ciss_mtx); + + switch(cmd) { + case CCISS_GETQSTATS: + { + union ciss_statrequest *cr = (union ciss_statrequest *)addr; + + switch (cr->cs_item) { + case CISSQ_FREE: + case CISSQ_NOTIFY: + bcopy(&sc->ciss_qstat[cr->cs_item], &cr->cs_qstat, + sizeof(struct ciss_qstat)); + break; + default: + error = ENOIOCTL; + break; + } + + break; + } + + case CCISS_GETPCIINFO: + { + cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr; + + pis->bus = pci_get_bus(sc->ciss_dev); + pis->dev_fn = pci_get_slot(sc->ciss_dev); + pis->board_id = pci_get_devid(sc->ciss_dev); + + break; + } + + case CCISS_GETINTINFO: + { + cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; + + cis->delay = sc->ciss_cfg->interrupt_coalesce_delay; + cis->count = sc->ciss_cfg->interrupt_coalesce_count; + + break; + } + + case CCISS_SETINTINFO: + { + cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; + + if ((cis->delay == 0) && (cis->count == 0)) { + error = EINVAL; + break; + } + + /* + * XXX apparently this is only safe if the controller is idle, + * we should suspend it before doing this. + */ + sc->ciss_cfg->interrupt_coalesce_delay = cis->delay; + sc->ciss_cfg->interrupt_coalesce_count = cis->count; + + if (ciss_update_config(sc)) + error = EIO; + + /* XXX resume the controller here */ + break; + } + + case CCISS_GETNODENAME: + bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr, + sizeof(NodeName_type)); + break; + + case CCISS_SETNODENAME: + bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name, + sizeof(NodeName_type)); + if (ciss_update_config(sc)) + error = EIO; + break; + + case CCISS_GETHEARTBEAT: + *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat; + break; + + case CCISS_GETBUSTYPES: + *(BusTypes_type *)addr = sc->ciss_cfg->bus_types; + break; + + case CCISS_GETFIRMVER: + bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr, + sizeof(FirmwareVer_type)); + break; + + case CCISS_GETDRIVERVER: + *(DriverVer_type *)addr = CISS_DRIVER_VERSION; + break; + + case CCISS_REVALIDVOLS: + /* + * This is a bit ugly; to do it "right" we really need + * to find any disks that have changed, kick CAM off them, + * then rescan only these disks. It'd be nice if they + * a) told us which disk(s) they were going to play with, + * and b) which ones had arrived. 8( + */ + break; + +#ifdef __amd64__ + case CCISS_PASSTHRU32: + ioc_swab.LUN_info = ioc32->LUN_info; + ioc_swab.Request = ioc32->Request; + ioc_swab.error_info = ioc32->error_info; + ioc_swab.buf_size = ioc32->buf_size; + ioc_swab.buf = (u_int8_t *)(uintptr_t)ioc32->buf; + ioc = &ioc_swab; + /* FALLTHROUGH */ +#endif + + case CCISS_PASSTHRU: + error = ciss_user_command(sc, ioc); + break; + + default: + debug(0, "unknown ioctl 0x%lx", cmd); + + debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO); + debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO); + debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO); + debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME); + debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME); + debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT); + debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES); + debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER); + debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER); + debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS); + debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU); + + error = ENOIOCTL; + break; + } + + mtx_unlock(&sc->ciss_mtx); + return(error); +} |
