FreeBSD/Linux Kernel Cross Reference
sys/dev/nvme/nvme_ctrlr_cmd.c

     /*-
      * Copyright (C) 2012-2013 Intel Corporation
      * 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.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/9.2/sys/dev/nvme/nvme_ctrlr_cmd.c 253296 2013-07-12 22:07:33Z jimharris $");
    
    #include "nvme_private.h"
    
    void
    nvme_ctrlr_cmd_identify_controller(struct nvme_controller *ctrlr, void *payload,
            nvme_cb_fn_t cb_fn, void *cb_arg)
    {
            struct nvme_request *req;
            struct nvme_command *cmd;
    
            req = nvme_allocate_request_vaddr(payload,
                sizeof(struct nvme_controller_data), cb_fn, cb_arg);
    
            cmd = &req->cmd;
            cmd->opc = NVME_OPC_IDENTIFY;
    
            /*
             * TODO: create an identify command data structure, which
             *  includes this CNS bit in cdw10.
             */
            cmd->cdw10 = 1;
    
            nvme_ctrlr_submit_admin_request(ctrlr, req);
    }
    
    void
    nvme_ctrlr_cmd_identify_namespace(struct nvme_controller *ctrlr, uint16_t nsid,
            void *payload, nvme_cb_fn_t cb_fn, void *cb_arg)
    {
            struct nvme_request *req;
            struct nvme_command *cmd;
    
            req = nvme_allocate_request_vaddr(payload,
                sizeof(struct nvme_namespace_data), cb_fn, cb_arg);
    
            cmd = &req->cmd;
            cmd->opc = NVME_OPC_IDENTIFY;
    
            /*
             * TODO: create an identify command data structure
             */
            cmd->nsid = nsid;
    
            nvme_ctrlr_submit_admin_request(ctrlr, req);
    }
    
    void
    nvme_ctrlr_cmd_create_io_cq(struct nvme_controller *ctrlr,
        struct nvme_qpair *io_que, uint16_t vector, nvme_cb_fn_t cb_fn,
        void *cb_arg)
    {
            struct nvme_request *req;
            struct nvme_command *cmd;
    
            req = nvme_allocate_request_null(cb_fn, cb_arg);
    
            cmd = &req->cmd;
            cmd->opc = NVME_OPC_CREATE_IO_CQ;
    
            /*
             * TODO: create a create io completion queue command data
             *  structure.
             */
            cmd->cdw10 = ((io_que->num_entries-1) << 16) | io_que->id;
            /* 0x3 = interrupts enabled | physically contiguous */
            cmd->cdw11 = (vector << 16) | 0x3;
            cmd->prp1 = io_que->cpl_bus_addr;
    
            nvme_ctrlr_submit_admin_request(ctrlr, req);
    }
    
   void
   nvme_ctrlr_cmd_create_io_sq(struct nvme_controller *ctrlr,
       struct nvme_qpair *io_que, nvme_cb_fn_t cb_fn, void *cb_arg)
   {
           struct nvme_request *req;
           struct nvme_command *cmd;
   
           req = nvme_allocate_request_null(cb_fn, cb_arg);
   
           cmd = &req->cmd;
           cmd->opc = NVME_OPC_CREATE_IO_SQ;
   
           /*
            * TODO: create a create io submission queue command data
            *  structure.
            */
           cmd->cdw10 = ((io_que->num_entries-1) << 16) | io_que->id;
           /* 0x1 = physically contiguous */
           cmd->cdw11 = (io_que->id << 16) | 0x1;
           cmd->prp1 = io_que->cmd_bus_addr;
   
           nvme_ctrlr_submit_admin_request(ctrlr, req);
   }
   
   void
   nvme_ctrlr_cmd_delete_io_cq(struct nvme_controller *ctrlr,
       struct nvme_qpair *io_que, nvme_cb_fn_t cb_fn, void *cb_arg)
   {
           struct nvme_request *req;
           struct nvme_command *cmd;
   
           req = nvme_allocate_request_null(cb_fn, cb_arg);
   
           cmd = &req->cmd;
           cmd->opc = NVME_OPC_DELETE_IO_CQ;
   
           /*
            * TODO: create a delete io completion queue command data
            *  structure.
            */
           cmd->cdw10 = io_que->id;
   
           nvme_ctrlr_submit_admin_request(ctrlr, req);
   }
   
   void
   nvme_ctrlr_cmd_delete_io_sq(struct nvme_controller *ctrlr,
       struct nvme_qpair *io_que, nvme_cb_fn_t cb_fn, void *cb_arg)
   {
           struct nvme_request *req;
           struct nvme_command *cmd;
   
           req = nvme_allocate_request_null(cb_fn, cb_arg);
   
           cmd = &req->cmd;
           cmd->opc = NVME_OPC_DELETE_IO_SQ;
   
           /*
            * TODO: create a delete io submission queue command data
            *  structure.
            */
           cmd->cdw10 = io_que->id;
   
           nvme_ctrlr_submit_admin_request(ctrlr, req);
   }
   
   void
   nvme_ctrlr_cmd_set_feature(struct nvme_controller *ctrlr, uint8_t feature,
       uint32_t cdw11, void *payload, uint32_t payload_size,
       nvme_cb_fn_t cb_fn, void *cb_arg)
   {
           struct nvme_request *req;
           struct nvme_command *cmd;
   
           req = nvme_allocate_request_null(cb_fn, cb_arg);
   
           cmd = &req->cmd;
           cmd->opc = NVME_OPC_SET_FEATURES;
           cmd->cdw10 = feature;
           cmd->cdw11 = cdw11;
   
           nvme_ctrlr_submit_admin_request(ctrlr, req);
   }
   
   void
   nvme_ctrlr_cmd_get_feature(struct nvme_controller *ctrlr, uint8_t feature,
       uint32_t cdw11, void *payload, uint32_t payload_size,
       nvme_cb_fn_t cb_fn, void *cb_arg)
   {
           struct nvme_request *req;
           struct nvme_command *cmd;
   
           req = nvme_allocate_request_null(cb_fn, cb_arg);
   
           cmd = &req->cmd;
           cmd->opc = NVME_OPC_GET_FEATURES;
           cmd->cdw10 = feature;
           cmd->cdw11 = cdw11;
   
           nvme_ctrlr_submit_admin_request(ctrlr, req);
   }
   
   void
   nvme_ctrlr_cmd_set_num_queues(struct nvme_controller *ctrlr,
       uint32_t num_queues, nvme_cb_fn_t cb_fn, void *cb_arg)
   {
           uint32_t cdw11;
   
           cdw11 = ((num_queues - 1) << 16) || (num_queues - 1);
           nvme_ctrlr_cmd_set_feature(ctrlr, NVME_FEAT_NUMBER_OF_QUEUES, cdw11,
               NULL, 0, cb_fn, cb_arg);
   }
   
   void
   nvme_ctrlr_cmd_set_async_event_config(struct nvme_controller *ctrlr,
       union nvme_critical_warning_state state, nvme_cb_fn_t cb_fn,
       void *cb_arg)
   {
           uint32_t cdw11;
   
           cdw11 = state.raw;
           nvme_ctrlr_cmd_set_feature(ctrlr,
               NVME_FEAT_ASYNC_EVENT_CONFIGURATION, cdw11, NULL, 0, cb_fn,
               cb_arg);
   }
   
   void
   nvme_ctrlr_cmd_set_interrupt_coalescing(struct nvme_controller *ctrlr,
       uint32_t microseconds, uint32_t threshold, nvme_cb_fn_t cb_fn, void *cb_arg)
   {
           uint32_t cdw11;
   
           if ((microseconds/100) >= 0x100) {
                   nvme_printf(ctrlr, "invalid coal time %d, disabling\n",
                       microseconds);
                   microseconds = 0;
                   threshold = 0;
           }
   
           if (threshold >= 0x100) {
                   nvme_printf(ctrlr, "invalid threshold %d, disabling\n",
                       threshold);
                   threshold = 0;
                   microseconds = 0;
           }
   
           cdw11 = ((microseconds/100) << 8) | threshold;
           nvme_ctrlr_cmd_set_feature(ctrlr, NVME_FEAT_INTERRUPT_COALESCING, cdw11,
               NULL, 0, cb_fn, cb_arg);
   }
   
   void
   nvme_ctrlr_cmd_get_log_page(struct nvme_controller *ctrlr, uint8_t log_page,
       uint32_t nsid, void *payload, uint32_t payload_size, nvme_cb_fn_t cb_fn,
       void *cb_arg)
   {
           struct nvme_request *req;
           struct nvme_command *cmd;
   
           req = nvme_allocate_request_vaddr(payload, payload_size, cb_fn, cb_arg);
   
           cmd = &req->cmd;
           cmd->opc = NVME_OPC_GET_LOG_PAGE;
           cmd->nsid = nsid;
           cmd->cdw10 = ((payload_size/sizeof(uint32_t)) - 1) << 16;
           cmd->cdw10 |= log_page;
   
           nvme_ctrlr_submit_admin_request(ctrlr, req);
   }
   
   void
   nvme_ctrlr_cmd_get_error_page(struct nvme_controller *ctrlr,
       struct nvme_error_information_entry *payload, uint32_t num_entries,
       nvme_cb_fn_t cb_fn, void *cb_arg)
   {
   
           KASSERT(num_entries > 0, ("%s called with num_entries==0\n", __func__));
   
           /* Controller's error log page entries is 0-based. */
           KASSERT(num_entries <= (ctrlr->cdata.elpe + 1),
               ("%s called with num_entries=%d but (elpe+1)=%d\n", __func__,
               num_entries, ctrlr->cdata.elpe + 1));
   
           if (num_entries > (ctrlr->cdata.elpe + 1))
                   num_entries = ctrlr->cdata.elpe + 1;
   
           nvme_ctrlr_cmd_get_log_page(ctrlr, NVME_LOG_ERROR,
               NVME_GLOBAL_NAMESPACE_TAG, payload, sizeof(*payload) * num_entries,
               cb_fn, cb_arg);
   }
   
   void
   nvme_ctrlr_cmd_get_health_information_page(struct nvme_controller *ctrlr,
       uint32_t nsid, struct nvme_health_information_page *payload,
       nvme_cb_fn_t cb_fn, void *cb_arg)
   {
   
           nvme_ctrlr_cmd_get_log_page(ctrlr, NVME_LOG_HEALTH_INFORMATION,
               nsid, payload, sizeof(*payload), cb_fn, cb_arg);
   }
   
   void
   nvme_ctrlr_cmd_get_firmware_page(struct nvme_controller *ctrlr,
       struct nvme_firmware_page *payload, nvme_cb_fn_t cb_fn, void *cb_arg)
   {
   
           nvme_ctrlr_cmd_get_log_page(ctrlr, NVME_LOG_FIRMWARE_SLOT, 
               NVME_GLOBAL_NAMESPACE_TAG, payload, sizeof(*payload), cb_fn,
               cb_arg);
   }
   
   void
   nvme_ctrlr_cmd_abort(struct nvme_controller *ctrlr, uint16_t cid,
       uint16_t sqid, nvme_cb_fn_t cb_fn, void *cb_arg)
   {
           struct nvme_request *req;
           struct nvme_command *cmd;
   
           req = nvme_allocate_request_null(cb_fn, cb_arg);
   
           cmd = &req->cmd;
           cmd->opc = NVME_OPC_ABORT;
           cmd->cdw10 = (cid << 16) | sqid;
   
           nvme_ctrlr_submit_admin_request(ctrlr, req);
   }

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