FreeBSD/Linux Kernel Cross Reference
sys/cam/nvme/nvme_all.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause
      *
      * Copyright (c) 2015 Netflix, Inc.
      *
      * 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("$FreeBSD$");
    
    #include <sys/param.h>
    
    #ifdef _KERNEL
    #include "opt_scsi.h"
    
    #include <sys/systm.h>
    #include <sys/libkern.h>
    #include <sys/kernel.h>
    #include <sys/malloc.h>
    #include <sys/sysctl.h>
    #else
    #include <errno.h>
    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #ifndef min
    #define min(a,b) (((a)<(b))?(a):(b))
    #endif
    #endif
    
    #include <cam/cam.h>
    #include <cam/cam_ccb.h>
    #include <cam/cam_queue.h>
    #include <cam/cam_xpt.h>
    #include <cam/nvme/nvme_all.h>
    #include <sys/sbuf.h>
    #include <sys/endian.h>
    
    #ifdef _KERNEL
    #include <cam/cam_periph.h>
    #include <cam/cam_xpt_sim.h>
    #include <cam/cam_xpt_periph.h>
    #include <cam/cam_xpt_internal.h>
    #endif
    
    void
    nvme_ns_cmd(struct ccb_nvmeio *nvmeio, uint8_t cmd, uint32_t nsid,
        uint32_t cdw10, uint32_t cdw11, uint32_t cdw12, uint32_t cdw13,
        uint32_t cdw14, uint32_t cdw15)
    {
            bzero(&nvmeio->cmd, sizeof(struct nvme_command));
            nvmeio->cmd.opc = cmd;
            nvmeio->cmd.nsid = htole32(nsid);
            nvmeio->cmd.cdw10 = htole32(cdw10);
            nvmeio->cmd.cdw11 = htole32(cdw11);
            nvmeio->cmd.cdw12 = htole32(cdw12);
            nvmeio->cmd.cdw13 = htole32(cdw13);
            nvmeio->cmd.cdw14 = htole32(cdw14);
            nvmeio->cmd.cdw15 = htole32(cdw15);
    }
    
    int
    nvme_identify_match(caddr_t identbuffer, caddr_t table_entry)
    {
            return 0;
    }
    
    void
    nvme_print_ident(const struct nvme_controller_data *cdata,
        const struct nvme_namespace_data *data, struct sbuf *sb)
    {
    
            sbuf_printf(sb, "<");
            cam_strvis_sbuf(sb, cdata->mn, sizeof(cdata->mn),
                CAM_STRVIS_FLAG_NONASCII_SPC);
            sbuf_printf(sb, " ");
            cam_strvis_sbuf(sb, cdata->fr, sizeof(cdata->fr),
                CAM_STRVIS_FLAG_NONASCII_SPC);
            sbuf_printf(sb, " ");
           cam_strvis_sbuf(sb, cdata->sn, sizeof(cdata->sn),
               CAM_STRVIS_FLAG_NONASCII_SPC);
           sbuf_printf(sb, ">\n");
   }
   
   /* XXX need to do nvme admin opcodes too, but those aren't used yet by nda */
   static const char *
   nvme_opc2str[] = {
           "FLUSH",
           "WRITE",
           "READ",
           "RSVD-3",
           "WRITE_UNCORRECTABLE",
           "COMPARE",
           "RSVD-6",
           "RSVD-7",
           "WRITE_ZEROES",
           "DATASET_MANAGEMENT",
           "RSVD-a",
           "RSVD-b",
           "RSVD-c",
           "RESERVATION_REGISTER",
           "RESERVATION_REPORT",
           "RSVD-f",
           "RSVD-10",
           "RESERVATION_ACQUIRE",
           "RSVD-12",
           "RSVD-13",
           "RSVD-14",
           "RESERVATION_RELEASE",
   };
   
   const char *
   nvme_op_string(const struct nvme_command *cmd, int admin)
   {
   
           if (admin) {
                   return "ADMIN";
           } else {
                   if (cmd->opc >= nitems(nvme_opc2str))
                           return "UNKNOWN";
                   return nvme_opc2str[cmd->opc];
           }
   }
   
   const char *
   nvme_cmd_string(const struct nvme_command *cmd, char *cmd_string, size_t len)
   {
           struct sbuf sb;
           int error;
   
           if (len == 0)
                   return ("");
   
           sbuf_new(&sb, cmd_string, len, SBUF_FIXEDLEN);
           nvme_cmd_sbuf(cmd, &sb);
   
           error = sbuf_finish(&sb);
           if (error != 0 &&
   #ifdef _KERNEL
               error != ENOMEM)
   #else
               errno != ENOMEM)
   #endif
                   return ("");
   
           return(sbuf_data(&sb));
   }
   
   void
   nvme_cmd_sbuf(const struct nvme_command *cmd, struct sbuf *sb)
   {
   
           /*
            * cid, rsvd areas and mptr not printed, since they are used
            * only internally by the SIM.
            */
           sbuf_printf(sb,
               "opc=%x fuse=%x nsid=%x prp1=%llx prp2=%llx cdw=%x %x %x %x %x %x",
               cmd->opc, cmd->fuse, cmd->nsid,
               (unsigned long long)cmd->prp1, (unsigned long long)cmd->prp2,
               cmd->cdw10, cmd->cdw11, cmd->cdw12,
               cmd->cdw13, cmd->cdw14, cmd->cdw15);
   }
   
   /*
    * nvme_command_sbuf() returns 0 for success and -1 for failure.
    */
   int
   nvme_command_sbuf(struct ccb_nvmeio *nvmeio, struct sbuf *sb)
   {
   
           sbuf_printf(sb, "%s. NCB: ", nvme_op_string(&nvmeio->cmd,
               nvmeio->ccb_h.func_code == XPT_NVME_ADMIN));
           nvme_cmd_sbuf(&nvmeio->cmd, sb);
           return(0);
   }
   
   #ifdef _KERNEL
   const void *
   nvme_get_identify_cntrl(struct cam_periph *periph)
   {
           struct cam_ed *device;
   
           device = periph->path->device;
   
           return device->nvme_cdata;
   }
   
   const void *
   nvme_get_identify_ns(struct cam_periph *periph)
   {
           struct cam_ed *device;
   
           device = periph->path->device;
   
           return device->nvme_data;
   }
   #endif

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