9f8ed7e40b
This patch changes the way XPT_GDEV_TYPE works for NVMe. The current ccb_getdev structure includes pointers to the NVMe Identify Controller and Namespace structures, but these are kernel virtual addresses which are not accessible from user space. As an alternative, the patch changes the pointers into padding in ccb_getdev and adds two new types to ccb_dev_advinfo to retrieve the Identify Controller (CDAI_TYPE_NVME_CNTRL) and Namespace (CDAI_TYPE_NVME_NS) data structures. Reviewed By: rpokala, imp Differential Revision: https://reviews.freebsd.org/D10466 Submitted by: Chuck Tuffli
153 lines
3.9 KiB
C
153 lines
3.9 KiB
C
/*-
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* Copyright (c) 2015 Netflix, Inc
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#ifdef _KERNEL
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#include "opt_scsi.h"
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#include <sys/systm.h>
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#include <sys/libkern.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/sysctl.h>
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#else
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef min
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#define min(a,b) (((a)<(b))?(a):(b))
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#endif
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#endif
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_queue.h>
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#include <cam/cam_xpt.h>
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#include <cam/nvme/nvme_all.h>
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#include <sys/sbuf.h>
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#include <sys/endian.h>
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#ifdef _KERNEL
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#include <cam/cam_periph.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/cam_xpt_periph.h>
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#include <cam/cam_xpt_internal.h>
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#endif
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void
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nvme_ns_cmd(struct ccb_nvmeio *nvmeio, uint8_t cmd, uint32_t nsid,
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uint32_t cdw10, uint32_t cdw11, uint32_t cdw12, uint32_t cdw13,
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uint32_t cdw14, uint32_t cdw15)
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{
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bzero(&nvmeio->cmd, sizeof(struct nvme_command));
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nvmeio->cmd.opc = cmd;
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nvmeio->cmd.nsid = nsid;
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nvmeio->cmd.cdw10 = cdw10;
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nvmeio->cmd.cdw11 = cdw11;
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nvmeio->cmd.cdw12 = cdw12;
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nvmeio->cmd.cdw13 = cdw13;
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nvmeio->cmd.cdw14 = cdw14;
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nvmeio->cmd.cdw15 = cdw15;
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}
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int
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nvme_identify_match(caddr_t identbuffer, caddr_t table_entry)
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{
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return 0;
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}
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void
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nvme_print_ident(const struct nvme_controller_data *cdata,
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const struct nvme_namespace_data *data)
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{
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printf("I'm a pretty NVME drive\n");
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}
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/* XXX need to do nvme admin opcodes too, but those aren't used yet by nda */
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static const char *
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nvme_opc2str[] = {
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"FLUSH",
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"WRITE",
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"READ",
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"RSVD-3",
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"WRITE_UNCORRECTABLE",
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"COMPARE",
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"RSVD-6",
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"RSVD-7",
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"DATASET_MANAGEMENT"
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};
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const char *
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nvme_op_string(const struct nvme_command *cmd)
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{
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if (cmd->opc > nitems(nvme_opc2str))
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return "UNKNOWN";
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return nvme_opc2str[cmd->opc];
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}
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const char *
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nvme_cmd_string(const struct nvme_command *cmd, char *cmd_string, size_t len)
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{
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/*
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* cid, rsvd areas and mptr not printed, since they are used
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* only internally by the SIM.
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*/
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snprintf(cmd_string, len,
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"opc=%x fuse=%x nsid=%x prp1=%llx prp2=%llx cdw=%x %x %x %x %x %x",
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cmd->opc, cmd->fuse, cmd->nsid,
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(unsigned long long)cmd->prp1, (unsigned long long)cmd->prp2,
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cmd->cdw10, cmd->cdw11, cmd->cdw12, cmd->cdw13, cmd->cdw14, cmd->cdw15);
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return cmd_string;
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}
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const void *
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nvme_get_identify_cntrl(struct cam_periph *periph)
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{
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struct cam_ed *device;
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device = periph->path->device;
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return device->nvme_cdata;
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}
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const void *
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nvme_get_identify_ns(struct cam_periph *periph)
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{
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struct cam_ed *device;
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device = periph->path->device;
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return device->nvme_data;
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}
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