diff options
author | Mike Smith <msmith@FreeBSD.org> | 2001-11-27 23:08:37 +0000 |
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committer | Mike Smith <msmith@FreeBSD.org> | 2001-11-27 23:08:37 +0000 |
commit | 3a31b7eb32ad60e1e05b2b2e184ff47e4afbb874 (patch) | |
tree | 6ccf2d6ebb783d31cebcf97d6e43ba734d760a53 /sys/dev/ciss/ciss.c | |
parent | 0a79e75e5fecb66708b9572ed352212fed22c045 (diff) | |
download | src-3a31b7eb32ad60e1e05b2b2e184ff47e4afbb874.tar.gz src-3a31b7eb32ad60e1e05b2b2e184ff47e4afbb874.zip |
Add the 'ciss' driver, which supports the Compaq SmartRAID 5* family of
RAID controllers (5300, 532, 5i, etc.)
Thanks to Compaq and Yahoo! for support during the development of this
driver.
MFC after: 1 week
Notes
Notes:
svn path=/head/; revision=87011
Diffstat (limited to 'sys/dev/ciss/ciss.c')
-rw-r--r-- | sys/dev/ciss/ciss.c | 3368 |
1 files changed, 3368 insertions, 0 deletions
diff --git a/sys/dev/ciss/ciss.c b/sys/dev/ciss/ciss.c new file mode 100644 index 000000000000..69e03181f644 --- /dev/null +++ b/sys/dev/ciss/ciss.c @@ -0,0 +1,3368 @@ +/*- + * Copyright (c) 2001 Michael Smith + * 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. + */ + +#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/devicestat.h> +#include <sys/stat.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/clock.h> +#include <machine/bus_memio.h> +#include <machine/bus.h> +#include <machine/endian.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <pci/pcireg.h> +#include <pci/pcivar.h> + +#include <dev/ciss/cissreg.h> +#include <dev/ciss/cissvar.h> +#include <dev/ciss/cissio.h> + +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_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_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, int ldrive, int async); +static void ciss_accept_media_complete(struct ciss_request *cr); +static void ciss_free(struct ciss_softc *sc); + +/* request submission/completion */ +static int ciss_start(struct ciss_request *cr); +static void ciss_done(struct ciss_softc *sc); +static void ciss_intr(void *arg); +static void ciss_complete(struct ciss_softc *sc); +static int ciss_report_request(struct ciss_request *cr, int *command_status, + int *scsi_status); +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); +static int ciss_abort_request(struct ciss_request *cr); + +/* 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 target); +static void ciss_cam_rescan_all(struct ciss_softc *sc); +static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); +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 target); +static int ciss_name_device(struct ciss_softc *sc, int target); + +/* periodic status monitoring */ +static void ciss_periodic(void *arg); +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_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); + +/* + * Control device interface. + */ +static d_open_t ciss_open; +static d_close_t ciss_close; +static d_ioctl_t ciss_ioctl; + +#define CISS_CDEV_MAJOR 166 + +static struct cdevsw ciss_cdevsw = { + ciss_open, ciss_close, noread, nowrite, ciss_ioctl, + nopoll, nommap, nostrategy, "ciss", CISS_CDEV_MAJOR, + nodump, nopsize, 0, -1 +}; + +/************************************************************************ + * 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_SA5 (1<<0) +#define CISS_BOARD_SA5B (1<<1) + +static struct +{ + u_int16_t subvendor; + u_int16_t subdevice; + int flags; + char *desc; +} ciss_vendor_data[] = { + { 0x0e11, 0x4070, CISS_BOARD_SA5, "Compaq Smart Array 5300" }, + { 0x0e11, 0x4080, CISS_BOARD_SA5B, "Compaq Smart Array 5i" }, + { 0x0e11, 0x4082, CISS_BOARD_SA5B, "Compaq Smart Array 532" }, + { 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(-10); + } + return(ENOENT); +} + +/************************************************************************ + * Attach the driver to this adapter. + */ +static int +ciss_attach(device_t dev) +{ + struct ciss_softc *sc; + int i, 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; + + /* + * Work out adapter type. + */ + i = ciss_lookup(dev); + if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) { + sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5; + } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) { + sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5B; + } else { + /* really an error on our part */ + ciss_printf(sc, "unable to determine hardware type\n"); + error = ENXIO; + goto out; + } + + /* + * Do PCI-specific init. + */ + if ((error = ciss_init_pci(sc)) != 0) + goto out; + + /* + * Initialise driver queues. + */ + ciss_initq_free(sc); + ciss_initq_busy(sc); + ciss_initq_complete(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; + + /* + * 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; + + error = 0; + out: + if (error != 0) + 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); + + /* flush adapter cache */ + ciss_flush_adapter(sc); + + /* release all resources */ + 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); + + /* flush adapter cache */ + ciss_flush_adapter(sc); + + return(0); +} + +/************************************************************************ + * Perform PCI-specific attachment actions. + */ +static int +ciss_init_pci(struct ciss_softc *sc) +{ + uintptr_t cbase, csize, cofs; + int error; + + debug_called(1); + + /* + * 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(sc->ciss_dev, SYS_RES_MEMORY, &sc->ciss_regs_rid, + 0, ~0, 1, 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(sc->ciss_dev, SYS_RES_MEMORY, &sc->ciss_cfg_rid, + 0, ~0, 1, 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); + + /* + * 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); + } + if ((sc->ciss_cfg->valence < CISS_MIN_VALENCE) || + (sc->ciss_cfg->valence > CISS_MAX_VALENCE)) { + ciss_printf(sc, "adapter interface specification (%d) unsupported\n", + sc->ciss_cfg->valence); + return(ENXIO); + } + + /* + * Put the board into simple mode, and tell it we're using the low + * 4GB of RAM. Set the default interrupt coalescing options. + */ + if (!(sc->ciss_cfg->supported_methods & CISS_TRANSPORT_METHOD_SIMPLE)) { + ciss_printf(sc, "adapter does not support 'simple' transport layer\n"); + return(ENXIO); + } + sc->ciss_cfg->requested_method = CISS_TRANSPORT_METHOD_SIMPLE; + 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; + + 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 != CISS_TRANSPORT_METHOD_SIMPLE)) { + ciss_printf(sc, + "adapter refuses to go into 'simple' transport mode (0x%x, 0x%x)\n", + sc->ciss_cfg->supported_methods, sc->ciss_cfg->active_method); + return(ENXIO); + } + + /* + * Wait for the adapter to come ready. + */ + if ((error = ciss_wait_adapter(sc)) != 0) + return(error); + + /* + * Turn off interrupts before we go routing anything. + */ + CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc); + + /* + * Allocate and set up our interrupt. + */ + sc->ciss_irq_rid = 0; + if ((sc->ciss_irq_resource = + bus_alloc_resource(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid, 0, ~0, 1, + 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, ciss_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_32BIT, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + MAXBSIZE, CISS_COMMAND_SG_LENGTH, /* maxsize, nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + BUS_DMA_ALLOCNOW, /* flags */ + &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_COMMAND_SG_LENGTH, /* maxsize, nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + 0, /* flags */ + &sc->ciss_buffer_dmat)) { + ciss_printf(sc, "can't allocate buffer DMA tag\n"); + return(ENOMEM); + } + 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); +} + +/************************************************************************ + * 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); + + /* + * 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); + + if (1/*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 */ + 1, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* 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 */ + &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, + sizeof(struct ciss_command) * sc->ciss_max_requests, + ciss_command_map_helper, sc, 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; + ciss_enqueue_free(cr); + } + return(0); +} + +static void +ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + struct ciss_softc *sc = (struct ciss_softc *)arg; + + sc->ciss_command_phys = segs->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; + } + + /* XXX later revisions may not need this */ + sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH; + + /* XXX only really required for old 5300 adapters? */ + sc->ciss_flags |= CISS_FLAG_BMIC_ABORT; + + /* print information */ + if (1/*bootverbose*/) { + ciss_printf(sc, " %d logical drive%s configured\n", + sc->ciss_id->configured_logical_drives, + (sc->ciss_id->configured_logical_drives == 1) ? "" : "s"); + 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); +} + +/************************************************************************ + * Find logical drives on the adapter. + */ +static int +ciss_init_logical(struct ciss_softc *sc) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_report_cdb *crc; + struct ciss_lun_report *cll; + int error, i; + size_t report_size; + int ndrives; + int command_status; + + 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) + CISS_MAX_LOGICAL * 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 logical drive list\n"); + error = ENOMEM; + goto out; + } + + /* + * Build the Report Logical LUNs command. + */ + cc = CISS_FIND_COMMAND(cr); + 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 = CISS_OPCODE_REPORT_LOGICAL_LUNS; + 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 Report Logical LUNs command (%d)\n", 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 logical drives than driver limit (%d), adjust CISS_MAX_LOGICAL\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; + + /* 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); + return(ENXIO); + } + + /* + * Save logical drive information. + */ + if (1/*bootverbose*/) + ciss_printf(sc, "%d logical drive%s\n", ndrives, (ndrives > 1) ? "s" : ""); + if (ndrives != sc->ciss_id->configured_logical_drives) + ciss_printf(sc, "logical drive map claims %d drives, but adapter claims %d\n", + ndrives, sc->ciss_id->configured_logical_drives); + for (i = 0; i < CISS_MAX_LOGICAL; i++) { + if (i < ndrives) { + sc->ciss_logical[i].cl_address = cll->lun[i]; /* XXX endianness? */ + if (ciss_identify_logical(sc, &sc->ciss_logical[i]) != 0) + continue; + /* + * If the drive has had media exchanged, we should bring it online. + */ + if (sc->ciss_logical[i].cl_lstatus->media_exchanged) + ciss_accept_media(sc, i, 0); + + } else { + sc->ciss_logical[i].cl_status = CISS_LD_NONEXISTENT; + } + } + error = 0; + + out: + /* + * Note that if the error is a timeout, we are taking a slight + * risk here and assuming that the adapter will not respond at a + * later time, scribbling over host memory. + */ + if (cr != NULL) + ciss_release_request(cr); + if (cll != NULL) + free(cll, CISS_MALLOC_CLASS); + 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 = CISS_FIND_COMMAND(cr); + cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); + cbc->log_drive = 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; + + /* + * Print the drive's basic characteristics. + */ + if (1/*bootverbose*/) { + ciss_printf(sc, "logical drive %d: %s, %dMB ", + cbc->log_drive, 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 = CISS_FIND_COMMAND(cr); + cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); + cbc->log_drive = 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, int ldrive, int async) +{ + struct ciss_request *cr; + struct ciss_command *cc; + struct ciss_bmic_cdb *cbc; + int error; + + debug(0, "bringing logical drive %d back online %ssynchronously", + ldrive, async ? "a" : ""); + + /* + * 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 = CISS_FIND_COMMAND(cr); + cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); + cbc->log_drive = ldrive; + + /* + * Dispatch the request asynchronously if we can't sleep waiting + * for it to complete. + */ + if (async) { + cr->cr_complete = ciss_accept_media_complete; + if ((error = ciss_start(cr)) != 0) + goto out; + return(0); + } else { + /* + * 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; + } + } + + /* + * Call the completion callback manually. + */ + ciss_accept_media_complete(cr); + return(0); + +out: + if (cr != NULL) + ciss_release_request(cr); + return(error); +} + +static void +ciss_accept_media_complete(struct ciss_request *cr) +{ + int command_status; + + /* + * 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; + } + ciss_release_request(cr); +} + +/************************************************************************ + * Release adapter resources. + */ +static void +ciss_free(struct ciss_softc *sc) +{ + debug_called(1); + + /* we're going away */ + sc->ciss_flags |= CISS_FLAG_ABORTING; + + /* terminate the periodic heartbeat routine */ + untimeout(ciss_periodic, sc, sc->ciss_periodic); + + /* cancel the Event Notify chain */ + ciss_notify_abort(sc); + + /* 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, sc->ciss_irq_resource); + + /* destroy DMA tags */ + if (sc->ciss_parent_dmat) + bus_dma_tag_destroy(sc->ciss_parent_dmat); + 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_buffer_dmat) + bus_dma_tag_destroy(sc->ciss_command_dmat); + + /* disconnect from CAM */ + if (sc->ciss_cam_sim) { + xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim)); + cam_sim_free(sc->ciss_cam_sim, 0); + } + if (sc->ciss_cam_devq) + cam_simq_free(sc->ciss_cam_devq); + /* XXX what about ciss_cam_path? */ +} + +/************************************************************************ + * 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 = CISS_FIND_COMMAND(cr); + 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 + + /* + * Post the command to the adapter. + */ + ciss_enqueue_busy(cr); + CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); + + 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) +{ + struct ciss_request *cr; + struct ciss_command *cc; + u_int32_t tag, index; + int complete; + + debug_called(3); + + /* + * Loop quickly taking requests from the adapter and moving them + * from the busy queue to the completed queue. + */ + complete = 0; + for (;;) { + + /* see if the OPQ contains anything */ + if (!CISS_TL_SIMPLE_OPQ_INTERRUPT(sc)) + break; + + 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 = CISS_FIND_COMMAND(cr); + cc->header.host_tag = tag; /* not updated by adapter */ + if (ciss_remove_busy(cr)) { + /* assume this is garbage out of the adapter */ + ciss_printf(sc, "completed nonbusy request %d\n", index); + } else { + ciss_enqueue_complete(cr); + } + complete = 1; + } + + /* + * Invoke completion processing. If we can defer this out of + * interrupt context, that'd be good. + */ + if (complete) + ciss_complete(sc); +} + +/************************************************************************ + * Take an interrupt from the adapter. + */ +static void +ciss_intr(void *arg) +{ + struct ciss_softc *sc = (struct ciss_softc *)arg; + + /* + * The only interrupt we recognise indicates that there are + * entries in the outbound post queue. + */ + ciss_done(sc); +} + +/************************************************************************ + * 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) +{ + 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)) == NULL) + break; + ciss_unmap_request(cr); + + /* + * 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) +{ + struct ciss_command *cc; + struct ciss_error_info *ce; + + debug_called(2); + + cc = CISS_FIND_COMMAND(cr); + 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) && + ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) || + (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS))) { + 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\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); + } + } + 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) +{ + int error; + + debug_called(2); + + cr->cr_flags |= CISS_REQ_POLL; + if ((error = ciss_start(cr)) != 0) + return(error); + + do { + ciss_done(cr->cr_sc); + 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 s, error; + + debug_called(2); + + cr->cr_flags |= CISS_REQ_SLEEP; + if ((error = ciss_start(cr)) != 0) + return(error); + + s = splcam(); + while (cr->cr_flags & CISS_REQ_SLEEP) { + error = tsleep(cr, PCATCH, "cissREQ", (timeout * hz) / 1000); + /* + * On wakeup or interruption due to restartable activity, go + * back and check to see if we're done. + */ + if ((error == 0) || (error == ERESTART)) { + error = 0; + continue; + } + /* + * Timeout, interrupted system call, etc. + */ + break; + } + splx(s); + return(error); +} + +/************************************************************************ + * 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 = CISS_FIND_COMMAND(cr); + 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); +} + + +/************************************************************************ + * 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; + + 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 = CISS_FIND_COMMAND(cr); + 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 = CISS_FIND_COMMANDPHYS(cr); + 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 = CISS_FIND_COMMAND(cr); + 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); + if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL)) + free(buf, CISS_MALLOC_CLASS); + } 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; + + debug_called(1); + + cr = NULL; + + /* + * Get a request. + */ + if ((error = ciss_get_request(sc, &cr)) != 0) + goto out; + cc = CISS_FIND_COMMAND(cr); + + /* + * Allocate an in-kernel databuffer if required, copy in user data. + */ + cr->cr_length = ioc->buf_size; + if (ioc->buf_size > 0) { + if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_WAITOK)) == NULL) { + error = ENOMEM; + goto out; + } + 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; + } + } + + /* + * 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? */ + + /* + * Run the command. + */ + if ((error = ciss_synch_request(cr, 60 * 1000))) { + debug(0, "request failed - %d", error); + goto out; + } + + /* + * Copy the results back to the user. + */ + ce = (struct ciss_error_info *)&(cc->sg[0]); + bcopy(ce, &ioc->error_info, sizeof(*ce)); + 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; + } + + /* done OK */ + error = 0; + +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; + + debug_called(2); + + sc = cr->cr_sc; + + /* check that mapping is necessary */ + if ((cr->cr_flags & CISS_REQ_MAPPED) || (cr->cr_data == NULL)) + return(0); + + bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap, cr->cr_data, cr->cr_length, + ciss_request_map_helper, CISS_FIND_COMMAND(cr), 0); + + 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); + + cr->cr_flags |= CISS_REQ_MAPPED; + return(0); +} + +static void +ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + struct ciss_command *cc; + int i; + + debug_called(2); + + cc = (struct ciss_command *)arg; + 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; +} + +/************************************************************************ + * 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) || (cr->cr_data == NULL)) + return; + + 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); + 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) +{ + + 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)) == NULL) { + ciss_printf(sc, "can't allocate CAM SIM queue\n"); + return(ENOMEM); + } + + /* + * Create a SIM. + */ + if ((sc->ciss_cam_sim = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, "ciss", sc, + device_get_unit(sc->ciss_dev), 1, + sc->ciss_cfg->max_outstanding_commands, + sc->ciss_cam_devq)) == NULL) { + ciss_printf(sc, "can't allocate CAM SIM\n"); + return(ENOMEM); + } + + /* + * Register bus 0 (the 'logical drives' bus) with this SIM. + */ + if (xpt_bus_register(sc->ciss_cam_sim, 0) != 0) { + ciss_printf(sc, "can't register SCSI bus 0\n"); + return(ENXIO); + } + + /* + * Initiate a rescan of the bus. + */ + ciss_cam_rescan_all(sc); + + return(0); +} + +/************************************************************************ + * Initiate a rescan of the 'logical devices' SIM + */ +static void +ciss_cam_rescan_target(struct ciss_softc *sc, int target) +{ + union ccb *ccb; + + debug_called(1); + + if ((ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO)) == NULL) { + ciss_printf(sc, "rescan failed (can't allocate CCB)\n"); + return; + } + + if (xpt_create_path(&sc->ciss_cam_path, xpt_periph, cam_sim_path(sc->ciss_cam_sim), target, 0) + != CAM_REQ_CMP) { + ciss_printf(sc, "rescan failed (can't create path)\n"); + return; + } + + xpt_setup_ccb(&ccb->ccb_h, sc->ciss_cam_path, 5/*priority (low)*/); + ccb->ccb_h.func_code = XPT_SCAN_BUS; + ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback; + ccb->crcn.flags = CAM_FLAG_NONE; + xpt_action(ccb); + + /* scan is now in progress */ +} + +static void +ciss_cam_rescan_all(struct ciss_softc *sc) +{ + return(ciss_cam_rescan_target(sc, 0)); +} + +static void +ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) +{ + free(ccb, M_TEMP); +} + +/************************************************************************ + * Handle requests coming from CAM + */ +static void +ciss_cam_action(struct cam_sim *sim, union ccb *ccb) +{ + switch (ccb->ccb_h.func_code) { + + /* perform SCSI I/O */ + case XPT_SCSI_IO: + if (!ciss_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) + return; + break; + + /* perform geometry calculations */ + case XPT_CALC_GEOMETRY: + { + struct ccb_calc_geometry *ccg = &ccb->ccg; + u_int32_t secs_per_cylinder; + + debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); + + /* + * This is the default geometry; hopefully we will have + * successfully talked to the 'disk' and obtained its private + * settings. + */ + 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; + 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? */ + ccb->ccb_h.status = CAM_REQ_CMP; + break; + } + + case XPT_GET_TRAN_SETTINGS: + { + struct ccb_trans_settings *cts = &ccb->cts; + int bus, target; + + bus = cam_sim_bus(sim); + target = cts->ccb_h.target_id; + + debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); + cts->valid = 0; + + /* disconnect always OK */ + cts->flags |= CCB_TRANS_DISC_ENB; + cts->valid |= CCB_TRANS_DISC_VALID; + + 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 for I/O attempt to nonexistent device */ + if ((bus != 0) || + (target > CISS_MAX_LOGICAL) || + (sc->ciss_logical[target].cl_status == CISS_LD_NONEXISTENT)) { + debug(3, " device does not exist"); + csio->ccb_h.status = CAM_REQ_CMP_ERR; + } + + /* firmware does not support commands > 10 bytes */ + if (csio->cdb_len > 12/*CISS_CDB_BUFFER_SIZE*/) { + debug(3, " command too large (%d > %d)", csio->cdb_len, CISS_CDB_BUFFER_SIZE); + csio->ccb_h.status = CAM_REQ_CMP_ERR; + } + + /* 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(sc->ciss_cam_sim, 1); + csio->ccb_h.status |= CAM_REQUEUE_REQ; + return(error); + } + + /* + * Build the command. + */ + cc = CISS_FIND_COMMAND(cr); + cr->cr_data = csio->data_ptr; + cr->cr_length = csio->dxfer_len; + cr->cr_complete = ciss_cam_complete; + cr->cr_private = csio; + + cc->header.address.logical.mode = CISS_HDR_ADDRESS_MODE_LOGICAL; + cc->header.address.logical.lun = target; + 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(sc->ciss_cam_sim, 1); + 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 target; + u_int8_t opcode; + + + target = csio->ccb_h.target_id; + opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ? + *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]; + + /* + * Handle requests for volumes that don't exist. A selection timeout + * is slightly better than an illegal request. Other errors might be + * better. + */ + if (sc->ciss_logical[target].cl_status == CISS_LD_NONEXISTENT) { + csio->ccb_h.status = CAM_SEL_TIMEOUT; + xpt_done((union ccb *)csio); + return(1); + } + + /* + * Handle requests for volumes that exist but are offline. + * + * I/O operations should fail, everything else should work. + */ + if (sc->ciss_logical[target].cl_status == CISS_LD_OFFLINE) { + switch(opcode) { + case READ_6: + case READ_10: + case READ_12: + case WRITE_6: + case WRITE_10: + case WRITE_12: + 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) +{ + struct ciss_softc *sc = cam_sim_softc(sim); + + debug_called(2); + + ciss_done(sc); +} + +/************************************************************************ + * 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 = CISS_FIND_COMMAND(cr); + 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", + ce->sense_length, ce->residual_count); + bzero(&csio->sense_data, SSD_FULL_SIZE); + bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length); + csio->sense_len = ce->sense_length; + 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", sns->flags & SSD_KEY); + } +#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); + + xpt_done((union ccb *)csio); + ciss_release_request(cr); +} + +/******************************************************************************** + * 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; + int target; + + if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? + *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == INQUIRY) { + + inq = (struct scsi_inquiry_data *)csio->data_ptr; + target = csio->ccb_h.target_id; + cl = &sc->ciss_logical[target]; + + padstr(inq->vendor, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8); + padstr(inq->product, ciss_name_ldrive_status(cl->cl_lstatus->status), 16); + padstr(inq->revision, "", 4); + } +} + + +/******************************************************************************** + * Find a peripheral attahed at (target) + */ +static struct cam_periph * +ciss_find_periph(struct ciss_softc *sc, 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), 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? + */ +int +ciss_name_device(struct ciss_softc *sc, int target) +{ + struct cam_periph *periph; + + if ((periph = ciss_find_periph(sc, target)) != NULL) { + sprintf(sc->ciss_logical[target].cl_name, "%s%d", periph->periph_name, periph->unit_number); + return(0); + } + sc->ciss_logical[target].cl_name[0] = 0; + return(ENOENT); +} + +/************************************************************************ + * Periodic status monitoring. + */ +static void +ciss_periodic(void *arg) +{ + struct ciss_softc *sc; + + 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"); + /* XXX should reset adapter here */ + } + } else { + sc->ciss_heartbeat = sc->ciss_cfg->heartbeat; + sc->ciss_heart_attack = 0; + debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat); + } + + /* + * 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. + */ + if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) + sc->ciss_periodic = timeout(ciss_periodic, sc, CISS_HEARTBEAT_RATE * hz); +} + +/************************************************************************ + * 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 = CISS_FIND_COMMAND(cr); + 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; + 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 = CISS_FIND_COMMAND(cr); + 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 there's room, save the event for a user-level tool. + */ + if (((sc->ciss_notify_head + 1) % CISS_MAX_EVENTS) != sc->ciss_notify_tail) { + sc->ciss_notify[sc->ciss_notify_head] = *cn; + sc->ciss_notify_head = (sc->ciss_notify_head + 1) % CISS_MAX_EVENTS; + } + + /* + * Some events are directly of interest to us. + */ + switch (cn->class) { + case CISS_NOTIFY_LOGICAL: + ciss_notify_logical(sc, cn); + break; + case CISS_NOTIFY_PHYSICAL: + ciss_notify_physical(sc, cn); + break; + } + + /* + * 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); + } + + /* + * 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, s, 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 = CISS_FIND_COMMAND(cr); + 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. + */ + s = splcam(); + while (sc->ciss_periodic_notify != NULL) { + error = tsleep(&sc->ciss_periodic_notify, 0, "cissNEA", hz * 5); + if (error == EWOULDBLOCK) { + ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n"); + break; + } + } + splx(s); + + 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 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; + + debug_called(2); + + ld = &sc->ciss_logical[cn->data.logical_status.logical_drive]; + + switch (cn->subclass) { + case CISS_NOTIFY_LOGICAL_STATUS: + switch (cn->detail) { + case 0: + ciss_name_device(sc, cn->data.logical_status.logical_drive); + 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_status != NULL) + ld->cl_lstatus->status = cn->data.logical_status.new_state; + + break; + + case 1: /* logical drive has recognised new media, needs Accept Media Exchange */ + ciss_name_device(sc, cn->data.logical_status.logical_drive); + 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, cn->data.logical_status.logical_drive, 1); + 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, + sc->ciss_logical[cn->data.rebuild_aborted.logical_drive].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, + sc->ciss_logical[cn->data.io_error.logical_drive].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, + sc->ciss_logical[cn->data.consistency_completed.logical_drive].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) +{ + +} + +/************************************************************************ + * 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 = CISS_FIND_COMMAND(cr); + + 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; + + /* 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 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]); + } +} + +/************************************************************************ + * 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"); + case CISS_LDRIVE_RAID4: + return("RAID 4"); + case CISS_LDRIVE_RAID5: + return("RAID 5"); + } + 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(dev_t dev, int flags, int fmt, struct proc *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 */ + + sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN; + return(0); +} + +/************************************************************************ + * Handle the last close on the control device. + */ +static int +ciss_close(dev_t dev, int flags, int fmt, struct proc *p) +{ + struct ciss_softc *sc; + + debug_called(1); + + sc = (struct ciss_softc *)dev->si_drv1; + + sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN; + 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(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p) +{ + struct ciss_softc *sc; + int error; + + debug_called(1); + + sc = (struct ciss_softc *)dev->si_drv1; + error = 0; + + switch(cmd) { + 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; + + case CCISS_PASSTHRU: + error = ciss_user_command(sc, (IOCTL_Command_struct *)addr); + 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; + } + + return(error); +} |