FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/isci_sysctl.c

     /*-
      * BSD LICENSE
      *
      * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     *
     *   * Redistributions of source code must retain the above copyright
     *     notice, this list of conditions and the following disclaimer.
     *   * 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 COPYRIGHT HOLDERS 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 COPYRIGHT
     * OWNER 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.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/8.4/sys/dev/isci/isci_sysctl.c 231688 2012-02-14 15:56:01Z jimharris $");
    
    #include <dev/isci/isci.h>
    
    #include <sys/sysctl.h>
    
    #include <dev/isci/scil/scif_controller.h>
    #include <dev/isci/scil/scic_phy.h>
    
    static int
    isci_sysctl_coalesce_timeout(SYSCTL_HANDLER_ARGS)
    {
            struct isci_softc *isci = (struct isci_softc *)arg1;
            int error = sysctl_handle_int(oidp, &isci->coalesce_timeout, 0, req);
            int i;
    
            if (error)
                    return (error);
    
            for (i = 0; i < isci->controller_count; i++)
                    scif_controller_set_interrupt_coalescence(
                        isci->controllers[i].scif_controller_handle,
                        isci->coalesce_number, isci->coalesce_timeout);
    
            return (0);
    }
    
    static int
    isci_sysctl_coalesce_number(SYSCTL_HANDLER_ARGS)
    {
            struct isci_softc *isci = (struct isci_softc *)arg1;
            int error = sysctl_handle_int(oidp, &isci->coalesce_number, 0, req);
            int i;
    
            if (error)
                    return (error);
    
            for (i = 0; i < isci->controller_count; i++)
                    scif_controller_set_interrupt_coalescence(
                        isci->controllers[i].scif_controller_handle,
                        isci->coalesce_number, isci->coalesce_timeout);
    
            return (0);
    }
    
    static void
    isci_sysctl_reset_remote_devices(struct ISCI_CONTROLLER *controller,
        uint32_t remote_devices_to_be_reset)
    {
            uint32_t i = 0;
    
            while (remote_devices_to_be_reset != 0) {
                    if (remote_devices_to_be_reset & 0x1) {
                            struct ISCI_REMOTE_DEVICE *remote_device =
                                    controller->remote_device[i];
    
                            if (remote_device != NULL) {
                                    mtx_lock(&controller->lock);
                                    isci_remote_device_reset(remote_device, NULL);
                                    mtx_unlock(&controller->lock);
                            }
                    }
                    remote_devices_to_be_reset >>= 1;
                    i++;
            }
    }
    
    static int
   isci_sysctl_reset_remote_device_on_controller0(SYSCTL_HANDLER_ARGS)
   {
           struct isci_softc *isci = (struct isci_softc *)arg1;
           uint32_t remote_devices_to_be_reset = 0;
           struct ISCI_CONTROLLER *controller = &isci->controllers[0];
           int error = sysctl_handle_int(oidp, &remote_devices_to_be_reset, 0, req);
   
           if (error || remote_devices_to_be_reset == 0)
                   return (error);
   
           isci_sysctl_reset_remote_devices(controller, remote_devices_to_be_reset);
   
           return (0);
   }
   
   static int
   isci_sysctl_reset_remote_device_on_controller1(SYSCTL_HANDLER_ARGS)
   {
           struct isci_softc *isci = (struct isci_softc *)arg1;
           uint32_t remote_devices_to_be_reset = 0;
           struct ISCI_CONTROLLER *controller = &isci->controllers[1];
           int error =
               sysctl_handle_int(oidp, &remote_devices_to_be_reset, 0, req);
   
           if (error || remote_devices_to_be_reset == 0)
                   return (error);
   
           isci_sysctl_reset_remote_devices(controller,
               remote_devices_to_be_reset);
   
           return (0);
   }
   
   static void
   isci_sysctl_stop(struct ISCI_CONTROLLER *controller, uint32_t phy_to_be_stopped)
   {
           SCI_PHY_HANDLE_T phy_handle = NULL;
   
           scic_controller_get_phy_handle(
               scif_controller_get_scic_handle(controller->scif_controller_handle),
               phy_to_be_stopped, &phy_handle);
   
           scic_phy_stop(phy_handle);
   }
   
   static int
   isci_sysctl_stop_phy(SYSCTL_HANDLER_ARGS)
   {
           struct isci_softc *isci = (struct isci_softc *)arg1;
           uint32_t phy_to_be_stopped = 0xff;
           uint32_t controller_index, phy_index;
           int error = sysctl_handle_int(oidp, &phy_to_be_stopped, 0, req);
   
           controller_index = phy_to_be_stopped / SCI_MAX_PHYS;
           phy_index = phy_to_be_stopped % SCI_MAX_PHYS;
   
           if(error || controller_index >= isci->controller_count)
                   return (error);
   
           isci_sysctl_stop(&isci->controllers[controller_index], phy_index);
   
           return (0);
   }
   
   static void
   isci_sysctl_start(struct ISCI_CONTROLLER *controller,
       uint32_t phy_to_be_started)
   {
           SCI_PHY_HANDLE_T phy_handle = NULL;
   
           scic_controller_get_phy_handle(
               scif_controller_get_scic_handle(controller->scif_controller_handle),
               phy_to_be_started, &phy_handle);
   
           scic_phy_start(phy_handle);
   }
   
   static int
   isci_sysctl_start_phy(SYSCTL_HANDLER_ARGS)
   {
           struct isci_softc *isci = (struct isci_softc *)arg1;
           uint32_t phy_to_be_started = 0xff;
           uint32_t controller_index, phy_index;
           int error = sysctl_handle_int(oidp, &phy_to_be_started, 0, req);
   
           controller_index = phy_to_be_started / SCI_MAX_PHYS;
           phy_index = phy_to_be_started % SCI_MAX_PHYS;
   
           if(error || controller_index >= isci->controller_count)
                   return error;
   
           isci_sysctl_start(&isci->controllers[controller_index], phy_index);
   
           return 0;
   }
   
   void isci_sysctl_initialize(struct isci_softc *isci)
   {
           struct sysctl_ctx_list *sysctl_ctx = device_get_sysctl_ctx(isci->device);
           struct sysctl_oid *sysctl_tree = device_get_sysctl_tree(isci->device);
   
           SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO,
               "coalesce_timeout", CTLTYPE_UINT | CTLFLAG_RW, isci, 0,
               isci_sysctl_coalesce_timeout, "IU",
               "Interrupt coalescing timeout (in microseconds)");
   
           SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO,
               "coalesce_number", CTLTYPE_UINT | CTLFLAG_RW, isci, 0,
               isci_sysctl_coalesce_number, "IU",
               "Interrupt coalescing number");
   
           SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO,
               "reset_remote_device_on_controller0", CTLTYPE_UINT| CTLFLAG_RW,
               isci, 0, isci_sysctl_reset_remote_device_on_controller0, "IU",
               "Reset remote device on controller 0");
   
           SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO,
               "reset_remote_device_on_controller1", CTLTYPE_UINT| CTLFLAG_RW,
               isci, 0, isci_sysctl_reset_remote_device_on_controller1, "IU",
               "Reset remote device on controller 1");
   
           SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO,
               "stop_phy", CTLTYPE_UINT| CTLFLAG_RW, isci, 0, isci_sysctl_stop_phy,
               "IU", "Stop PHY on a controller");
   
           SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO,
               "start_phy", CTLTYPE_UINT| CTLFLAG_RW, isci, 0,
               isci_sysctl_start_phy, "IU", "Start PHY on a controller");
   }
   

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