FreeBSD/Linux Kernel Cross Reference
sys/dev/twa/twa_externs.h

     /*-
      * Copyright (c) 2003-04 3ware, Inc.
      * 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.
     *
     *      $FreeBSD$
     */
    
    /*
     * 3ware driver for 9000 series storage controllers.
     *
     * Author: Vinod Kashyap
     */
    
    
    /* Global data structures */
    extern char                     twa_fw_img[];
    extern int                      twa_fw_img_size;
    extern struct twa_message       twa_aen_table[];
    extern char                     *twa_aen_severity_table[];
    extern struct twa_message       twa_error_table[];
    
    
    /* Functions in twa.c */
    extern int      twa_setup(struct twa_softc *sc);                /* do early driver/controller setup */
    extern int      twa_deinit_ctlr(struct twa_softc *sc);          /* stop controller */
    extern void     twa_interrupt(struct twa_softc *sc);            /* ISR */
    extern int      twa_ioctl(struct twa_softc *sc, int cmd, void *addr);/* handle user request */
    extern void     twa_enable_interrupts(struct twa_softc *sc);    /* enable controller interrupts */
    extern void     twa_disable_interrupts(struct twa_softc *sc);   /* disable controller interrupts */
    extern void     twa_complete_io(struct twa_request *tr);        /* I/O completion callback */
    extern int      twa_reset(struct twa_softc *sc);                /* (soft) reset controller */
    extern int      twa_submit_io(struct twa_request *tr);          /* wrapper to twa_start */
    extern int      twa_start(struct twa_request *tr);              /* submit command to controller */
    extern char     *twa_find_msg_string(struct twa_message *table, u_int16_t code);/* lookup a msg */
    extern struct twa_request *twa_get_request(struct twa_softc *sc);/* get a req pkt from free pool */
    extern void     twa_release_request(struct twa_request *tr);    /* put a req pkt back into free pool */
    extern void     twa_describe_controller(struct twa_softc *sc);  /* describe controller info */
    extern void     twa_print_controller(struct twa_softc *sc);     /* print controller state */
    
    /* Functions in twa_freebsd.c */
    extern void     twa_write_pci_config(struct twa_softc *sc, u_int32_t value, int size);/* write to pci config space */
    extern int      twa_alloc_req_pkts(struct twa_softc *sc, int num_reqs); /* alloc req & cmd pkts */
    extern int      twa_map_request(struct twa_request *tr);        /* copy cmd pkt & data to DMA'able memory */
    extern void     twa_unmap_request(struct twa_request *tr);      /* undo mapping */
    
    /* Functions in twa_cam.c */
    extern void     twa_request_bus_scan(struct twa_softc *sc);     /* request CAM for a bus scan */
    extern int      twa_send_scsi_cmd(struct twa_request *tr, int cmd);/* send down a SCSI cmd */
    extern void     twa_scsi_complete(struct twa_request *tr);      /* complete a SCSI cmd by calling CAM */
    extern void     twa_drain_busy_queue(struct twa_softc *sc);     /* drain busy queue (during reset) */
    
    extern int      twa_cam_setup(struct twa_softc *sc);            /* attach to CAM */
    extern void     twa_cam_detach(struct twa_softc *sc);           /* detach from CAM */
    extern void     twa_allow_new_requests(struct twa_softc *sc, void *ccb);/* unfreeze ccb flow from CAM */
    extern void     twa_disallow_new_requests(struct twa_softc *sc);/* freeze ccb flow from CAM */
    extern void     twa_set_timer(struct twa_request *tr);  /* Set a timer to time a given request */
    extern void     twa_unset_timer(struct twa_request *tr);/* Unset a previously set timer */
    

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