fa895cb8d2
The original NVMe API used bit-fields to represent fields in data structures defined by the specification (e.g. the op-code in the command data structure). The implementation targeted x86_64 processors and defined the bit fields for little endian dwords (i.e. 32 bits). This approach does not work as-is for big endian architectures and was changed to use a combination of bit shifts and masks to support PowerPC. Unfortunately, this changed the NVMe API and forces #ifdef's based on the OS revision level in user space code. This change reverts to something that looks like the original API, but it uses bytes instead of bit-fields inside the packed command structure. As a bonus, this works as-is for both big and little endian CPU architectures. Bump __FreeBSD_version to 1200081 due to API change Reviewed by: imp, kbowling, smh, mav Approved by: imp (mentor) Differential Revision: https://reviews.freebsd.org/D16404
164 lines
4.2 KiB
C
164 lines
4.2 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* 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,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 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 ``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 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), 0);
|
|
sbuf_printf(sb, " ");
|
|
cam_strvis_sbuf(sb, cdata->fr, sizeof(cdata->fr), 0);
|
|
sbuf_printf(sb, " ");
|
|
cam_strvis_sbuf(sb, cdata->sn, sizeof(cdata->sn), 0);
|
|
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",
|
|
"DATASET_MANAGEMENT"
|
|
};
|
|
|
|
const char *
|
|
nvme_op_string(const struct nvme_command *cmd)
|
|
{
|
|
|
|
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)
|
|
{
|
|
|
|
/*
|
|
* cid, rsvd areas and mptr not printed, since they are used
|
|
* only internally by the SIM.
|
|
*/
|
|
snprintf(cmd_string, len,
|
|
"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);
|
|
|
|
return cmd_string;
|
|
}
|
|
|
|
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;
|
|
}
|