Author: imp
Date: Thu Jun 9 22:39:02 2016
New Revision: 301771
URL: https://svnweb.freebsd.org/changeset/base/301771
Log:
New NVMe front end (nda).
Added:
head/sys/cam/nvme/
head/sys/cam/nvme/nvme_all.c (contents, props changed)
head/sys/cam/nvme/nvme_all.h (contents, props changed)
head/sys/cam/nvme/nvme_da.c (contents, props changed)
head/sys/cam/nvme/nvme_xpt.c (contents, props changed)
Modified:
head/sys/cam/cam_ccb.h
head/sys/cam/cam_xpt_internal.h
head/sys/conf/files
head/sys/conf/files.amd64
Modified: head/sys/cam/cam_ccb.h
==============================================================================
--- head/sys/cam/cam_ccb.h Thu Jun 9 22:25:00 2016 (r301770)
+++ head/sys/cam/cam_ccb.h Thu Jun 9 22:39:02 2016 (r301771)
@@ -41,6 +41,7 @@
#include <cam/cam_debug.h>
#include <cam/scsi/scsi_all.h>
#include <cam/ata/ata_all.h>
+#include <cam/nvme/nvme_all.h>
/* General allocation length definitions for CCB structures */
#define IOCDBLEN CAM_MAX_CDBLEN /* Space for CDB bytes/pointer
*/
@@ -265,6 +266,7 @@ typedef enum {
PROTO_ATAPI, /* AT Attachment Packetized Interface */
PROTO_SATAPM, /* SATA Port Multiplier */
PROTO_SEMB, /* SATA Enclosure Management Bridge */
+ PROTO_NVME, /* NVME */
} cam_proto;
typedef enum {
@@ -280,6 +282,7 @@ typedef enum {
XPORT_SATA, /* Serial AT Attachment */
XPORT_ISCSI, /* iSCSI */
XPORT_SRP, /* SCSI RDMA Protocol */
+ XPORT_NVME, /* NVMe over PCIe */
} cam_xport;
#define XPORT_IS_ATA(t) ((t) == XPORT_ATA || (t) == XPORT_SATA)
@@ -783,6 +786,19 @@ struct ccb_relsim {
};
/*
+ * NVMe I/O Request CCB used for the XPT_NVME_IO function code.
+ */
+struct ccb_nvmeio {
+ struct ccb_hdr ccb_h;
+ union ccb *next_ccb; /* Ptr for next CCB for action */
+ struct nvme_command cmd; /* NVME command, per NVME standard */
+ struct nvme_completion cpl; /* NVME completion, per NVME standard */
+ uint8_t *data_ptr; /* Ptr to the data buf/SG list */
+ uint32_t dxfer_len; /* Data transfer length */
+ uint32_t resid; /* Transfer residual length: 2's comp
unused ?*/
+};
+
+/*
* Definitions for the asynchronous callback CCB fields.
*/
typedef enum {
@@ -1234,6 +1250,7 @@ union ccb {
struct ccb_ataio ataio;
struct ccb_dev_advinfo cdai;
struct ccb_async casync;
+ struct ccb_nvmeio nvmeio;
};
#define CCB_CLEAR_ALL_EXCEPT_HDR(ccbp) \
@@ -1250,6 +1267,12 @@ cam_fill_csio(struct ccb_scsiio *csio, u
u_int32_t timeout);
static __inline void
+cam_fill_nvmeio(struct ccb_nvmeio *nvmeio, u_int32_t retries,
+ void (*cbfcnp)(struct cam_periph *, union ccb *),
+ u_int32_t flags, u_int8_t *data_ptr, u_int32_t dxfer_len,
+ u_int32_t timeout);
+
+static __inline void
cam_fill_ctio(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int32_t flags, u_int tag_action, u_int tag_id,
@@ -1370,6 +1393,20 @@ cam_ccb_status(union ccb *ccb)
void cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended);
+static __inline void
+cam_fill_nvmeio(struct ccb_nvmeio *nvmeio, u_int32_t retries,
+ void (*cbfcnp)(struct cam_periph *, union ccb *),
+ u_int32_t flags, u_int8_t *data_ptr, u_int32_t dxfer_len,
+ u_int32_t timeout)
+{
+ nvmeio->ccb_h.func_code = XPT_NVME_IO;
+ nvmeio->ccb_h.flags = flags;
+ nvmeio->ccb_h.retry_count = retries;
+ nvmeio->ccb_h.cbfcnp = cbfcnp;
+ nvmeio->ccb_h.timeout = timeout;
+ nvmeio->data_ptr = data_ptr;
+ nvmeio->dxfer_len = dxfer_len;
+}
__END_DECLS
#endif /* _CAM_CAM_CCB_H */
Modified: head/sys/cam/cam_xpt_internal.h
==============================================================================
--- head/sys/cam/cam_xpt_internal.h Thu Jun 9 22:25:00 2016
(r301770)
+++ head/sys/cam/cam_xpt_internal.h Thu Jun 9 22:39:02 2016
(r301771)
@@ -117,6 +117,8 @@ struct cam_ed {
STAILQ_ENTRY(cam_ed) highpowerq_entry;
struct mtx device_mtx;
struct task device_destroy_task;
+ const struct nvme_controller_data *nvme_cdata;
+ const struct nvme_namespace_data *nvme_data;
};
/*
@@ -167,6 +169,7 @@ struct cam_path {
struct xpt_xport * scsi_get_xport(void);
struct xpt_xport * ata_get_xport(void);
+struct xpt_xport * nvme_get_xport(void);
struct cam_ed * xpt_alloc_device(struct cam_eb *bus,
struct cam_et *target,
Added: head/sys/cam/nvme/nvme_all.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/cam/nvme/nvme_all.c Thu Jun 9 22:39:02 2016
(r301771)
@@ -0,0 +1,124 @@
+/*-
+ * Copyright (c) 2015 Netflix, Inc
+ * 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,
+ * 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/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>
+
+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 = nsid;
+ nvmeio->cmd.cdw10 = cdw10;
+ nvmeio->cmd.cdw11 = cdw11;
+ nvmeio->cmd.cdw12 = cdw12;
+ nvmeio->cmd.cdw13 = cdw13;
+ nvmeio->cmd.cdw14 = cdw14;
+ nvmeio->cmd.cdw15 = 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)
+{
+ printf("I'm a pretty NVME drive\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;
+}
Added: head/sys/cam/nvme/nvme_all.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/cam/nvme/nvme_all.h Thu Jun 9 22:39:02 2016
(r301771)
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 2015 Netflix, Inc
+ * 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,
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef CAM_NVME_NVME_ALL_H
+#define CAM_NVME_NVME_ALL_H 1
+
+#include <dev/nvme/nvme.h>
+
+struct ccb_nvmeio;
+
+#define NVME_REV_1 1 /* Supports NVMe 1.2 or earlier */
+
+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);
+
+int nvme_identify_match(caddr_t identbuffer, caddr_t table_entry);
+
+void nvme_print_ident(const struct nvme_controller_data *, const struct
nvme_namespace_data *);
+const char *nvme_op_string(const struct nvme_command *);
+const char *nvme_cmd_string(const struct nvme_command *, char *, size_t);
+
+#endif /* CAM_NVME_NVME_ALL_H */
Added: head/sys/cam/nvme/nvme_da.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/cam/nvme/nvme_da.c Thu Jun 9 22:39:02 2016 (r301771)
@@ -0,0 +1,1152 @@
+/*-
+ * Copyright (c) 2015 Netflix, Inc
+ * 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,
+ * 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.
+ *
+ * Derived from ata_da.c:
+ * Copyright (c) 2009 Alexander Motin <m...@freebsd.org>
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+
+#ifdef _KERNEL
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/bio.h>
+#include <sys/sysctl.h>
+#include <sys/taskqueue.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/conf.h>
+#include <sys/devicestat.h>
+#include <sys/eventhandler.h>
+#include <sys/malloc.h>
+#include <sys/cons.h>
+#include <sys/proc.h>
+#include <sys/reboot.h>
+#include <geom/geom_disk.h>
+#endif /* _KERNEL */
+
+#ifndef _KERNEL
+#include <stdio.h>
+#include <string.h>
+#endif /* _KERNEL */
+
+#include <cam/cam.h>
+#include <cam/cam_ccb.h>
+#include <cam/cam_periph.h>
+#include <cam/cam_xpt_periph.h>
+#include <cam/cam_sim.h>
+#include <cam/cam_iosched.h>
+
+#include <cam/nvme/nvme_all.h>
+
+typedef enum {
+ NDA_STATE_NORMAL
+} nda_state;
+
+typedef enum {
+ NDA_FLAG_OPEN = 0x0001,
+ NDA_FLAG_DIRTY = 0x0002,
+ NDA_FLAG_SCTX_INIT = 0x0004,
+} nda_flags;
+
+typedef enum {
+ NDA_Q_4K = 0x01,
+ NDA_Q_NONE = 0x00,
+} nda_quirks;
+
+#define NDA_Q_BIT_STRING \
+ "\020" \
+ "\001Bit 0"
+
+typedef enum {
+ NDA_CCB_BUFFER_IO = 0x01,
+ NDA_CCB_DUMP = 0x02,
+ NDA_CCB_TRIM = 0x03,
+ NDA_CCB_TYPE_MASK = 0x0F,
+} nda_ccb_state;
+
+/* Offsets into our private area for storing information */
+#define ccb_state ppriv_field0
+#define ccb_bp ppriv_ptr1
+
+struct trim_request {
+ TAILQ_HEAD(, bio) bps;
+};
+struct nda_softc {
+ struct cam_iosched_softc *cam_iosched;
+ int outstanding_cmds; /* Number of active commands */
+ int refcount; /* Active xpt_action() calls */
+ nda_state state;
+ nda_flags flags;
+ nda_quirks quirks;
+ int unmappedio;
+ uint32_t nsid; /* Namespace ID for this nda device */
+ struct disk *disk;
+ struct task sysctl_task;
+ struct sysctl_ctx_list sysctl_ctx;
+ struct sysctl_oid *sysctl_tree;
+ struct trim_request trim_req;
+#ifdef CAM_IO_STATS
+ struct sysctl_ctx_list sysctl_stats_ctx;
+ struct sysctl_oid *sysctl_stats_tree;
+ u_int timeouts;
+ u_int errors;
+ u_int invalidations;
+#endif
+};
+
+/* Need quirk table */
+
+static disk_strategy_t ndastrategy;
+static dumper_t ndadump;
+static periph_init_t ndainit;
+static void ndaasync(void *callback_arg, u_int32_t code,
+ struct cam_path *path, void *arg);
+static void ndasysctlinit(void *context, int pending);
+static periph_ctor_t ndaregister;
+static periph_dtor_t ndacleanup;
+static periph_start_t ndastart;
+static periph_oninv_t ndaoninvalidate;
+static void ndadone(struct cam_periph *periph,
+ union ccb *done_ccb);
+static int ndaerror(union ccb *ccb, u_int32_t cam_flags,
+ u_int32_t sense_flags);
+static void ndashutdown(void *arg, int howto);
+static void ndasuspend(void *arg);
+
+#ifndef NDA_DEFAULT_SEND_ORDERED
+#define NDA_DEFAULT_SEND_ORDERED 1
+#endif
+#ifndef NDA_DEFAULT_TIMEOUT
+#define NDA_DEFAULT_TIMEOUT 30 /* Timeout in seconds */
+#endif
+#ifndef NDA_DEFAULT_RETRY
+#define NDA_DEFAULT_RETRY 4
+#endif
+
+
+//static int nda_retry_count = NDA_DEFAULT_RETRY;
+static int nda_send_ordered = NDA_DEFAULT_SEND_ORDERED;
+static int nda_default_timeout = NDA_DEFAULT_TIMEOUT;
+
+/*
+ * All NVMe media is non-rotational, so all nvme device instances
+ * share this to implement the sysctl.
+ */
+static int nda_rotating_media = 0;
+
+static SYSCTL_NODE(_kern_cam, OID_AUTO, nda, CTLFLAG_RD, 0,
+ "CAM Direct Access Disk driver");
+
+static struct periph_driver ndadriver =
+{
+ ndainit, "nda",
+ TAILQ_HEAD_INITIALIZER(ndadriver.units), /* generation */ 0
+};
+
+PERIPHDRIVER_DECLARE(nda, ndadriver);
+
+static MALLOC_DEFINE(M_NVMEDA, "nvme_da", "nvme_da buffers");
+
+/*
+ * nice wrappers. Maybe these belong in nvme_all.c instead of
+ * here, but this is the only place that uses these. Should
+ * we ever grow another NVME periph, we should move them
+ * all there wholesale.
+ */
+
+static void
+nda_nvme_flush(struct nda_softc *softc, struct ccb_nvmeio *nvmeio)
+{
+ cam_fill_nvmeio(nvmeio,
+ 0, /* retries */
+ ndadone, /* cbfcnp */
+ CAM_DIR_NONE, /* flags */
+ NULL, /* data_ptr */
+ 0, /* dxfer_len */
+ nda_default_timeout * 1000); /* timeout 5s */
+ nvme_ns_flush_cmd(&nvmeio->cmd, softc->nsid);
+}
+
+static void
+nda_nvme_trim(struct nda_softc *softc, struct ccb_nvmeio *nvmeio,
+ void *payload, uint32_t num_ranges)
+{
+ cam_fill_nvmeio(nvmeio,
+ 0, /* retries */
+ ndadone, /* cbfcnp */
+ CAM_DIR_OUT, /* flags */
+ payload, /* data_ptr */
+ num_ranges * sizeof(struct nvme_dsm_range), /* dxfer_len */
+ nda_default_timeout * 1000); /* timeout 5s */
+ nvme_ns_trim_cmd(&nvmeio->cmd, softc->nsid, num_ranges);
+}
+
+static void
+nda_nvme_write(struct nda_softc *softc, struct ccb_nvmeio *nvmeio,
+ void *payload, uint64_t lba, uint32_t len, uint32_t count)
+{
+ cam_fill_nvmeio(nvmeio,
+ 0, /* retries */
+ ndadone, /* cbfcnp */
+ CAM_DIR_OUT, /* flags */
+ payload, /* data_ptr */
+ len, /* dxfer_len */
+ nda_default_timeout * 1000); /* timeout 5s */
+ nvme_ns_write_cmd(&nvmeio->cmd, softc->nsid, lba, count);
+}
+
+static void
+nda_nvme_rw_bio(struct nda_softc *softc, struct ccb_nvmeio *nvmeio,
+ struct bio *bp, uint32_t rwcmd)
+{
+ int flags = rwcmd == NVME_OPC_READ ? CAM_DIR_IN : CAM_DIR_OUT;
+ void *payload;
+ uint64_t lba;
+ uint32_t count;
+
+ if (bp->bio_flags & BIO_UNMAPPED) {
+ flags |= CAM_DATA_BIO;
+ payload = bp;
+ } else {
+ payload = bp->bio_data;
+ }
+
+ lba = bp->bio_pblkno;
+ count = bp->bio_bcount / softc->disk->d_sectorsize;
+
+ cam_fill_nvmeio(nvmeio,
+ 0, /* retries */
+ ndadone, /* cbfcnp */
+ flags, /* flags */
+ payload, /* data_ptr */
+ bp->bio_bcount, /* dxfer_len */
+ nda_default_timeout * 1000); /* timeout 5s */
+ nvme_ns_rw_cmd(&nvmeio->cmd, rwcmd, softc->nsid, lba, count);
+}
+
+static int
+ndaopen(struct disk *dp)
+{
+ struct cam_periph *periph;
+ struct nda_softc *softc;
+ int error;
+
+ periph = (struct cam_periph *)dp->d_drv1;
+ if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
+ return(ENXIO);
+ }
+
+ cam_periph_lock(periph);
+ if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
+ cam_periph_unlock(periph);
+ cam_periph_release(periph);
+ return (error);
+ }
+
+ CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
+ ("ndaopen\n"));
+
+ softc = (struct nda_softc *)periph->softc;
+ softc->flags |= NDA_FLAG_OPEN;
+
+ cam_periph_unhold(periph);
+ cam_periph_unlock(periph);
+ return (0);
+}
+
+static int
+ndaclose(struct disk *dp)
+{
+ struct cam_periph *periph;
+ struct nda_softc *softc;
+ union ccb *ccb;
+ int error;
+
+ periph = (struct cam_periph *)dp->d_drv1;
+ softc = (struct nda_softc *)periph->softc;
+ cam_periph_lock(periph);
+
+ CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
+ ("ndaclose\n"));
+
+ if ((softc->flags & NDA_FLAG_DIRTY) != 0 &&
+ (periph->flags & CAM_PERIPH_INVALID) == 0 &&
+ cam_periph_hold(periph, PRIBIO) == 0) {
+
+ ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
+ nda_nvme_flush(softc, &ccb->nvmeio);
+ error = cam_periph_runccb(ccb, ndaerror, /*cam_flags*/0,
+ /*sense_flags*/0, softc->disk->d_devstat);
+
+ if (error != 0)
+ xpt_print(periph->path, "Synchronize cache failed\n");
+ else
+ softc->flags &= ~NDA_FLAG_DIRTY;
+ xpt_release_ccb(ccb);
+ cam_periph_unhold(periph);
+ }
+
+ softc->flags &= ~NDA_FLAG_OPEN;
+
+ while (softc->refcount != 0)
+ cam_periph_sleep(periph, &softc->refcount, PRIBIO, "ndaclose",
1);
+ cam_periph_unlock(periph);
+ cam_periph_release(periph);
+ return (0);
+}
+
+static void
+ndaschedule(struct cam_periph *periph)
+{
+ struct nda_softc *softc = (struct nda_softc *)periph->softc;
+
+ if (softc->state != NDA_STATE_NORMAL)
+ return;
+
+ cam_iosched_schedule(softc->cam_iosched, periph);
+}
+
+/*
+ * Actually translate the requested transfer into one the physical driver
+ * can understand. The transfer is described by a buf and will include
+ * only one physical transfer.
+ */
+static void
+ndastrategy(struct bio *bp)
+{
+ struct cam_periph *periph;
+ struct nda_softc *softc;
+
+ periph = (struct cam_periph *)bp->bio_disk->d_drv1;
+ softc = (struct nda_softc *)periph->softc;
+
+ cam_periph_lock(periph);
+
+ CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ndastrategy(%p)\n", bp));
+
+ /*
+ * If the device has been made invalid, error out
+ */
+ if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
+ cam_periph_unlock(periph);
+ biofinish(bp, NULL, ENXIO);
+ return;
+ }
+
+ /*
+ * Place it in the queue of disk activities for this disk
+ */
+ cam_iosched_queue_work(softc->cam_iosched, bp);
+
+ /*
+ * Schedule ourselves for performing the work.
+ */
+ ndaschedule(periph);
+ cam_periph_unlock(periph);
+
+ return;
+}
+
+static int
+ndadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t
length)
+{
+ struct cam_periph *periph;
+ struct nda_softc *softc;
+ u_int secsize;
+ union ccb ccb;
+ struct disk *dp;
+ uint64_t lba;
+ uint32_t count;
+ int error = 0;
+
+ dp = arg;
+ periph = dp->d_drv1;
+ softc = (struct nda_softc *)periph->softc;
+ cam_periph_lock(periph);
+ secsize = softc->disk->d_sectorsize;
+ lba = offset / secsize;
+ count = length / secsize;
+
+ if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
+ cam_periph_unlock(periph);
+ return (ENXIO);
+ }
+
+ if (length > 0) {
+ xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
+ ccb.ccb_h.ccb_state = NDA_CCB_DUMP;
+ nda_nvme_write(softc, &ccb.nvmeio, virtual, lba, length, count);
+ xpt_polled_action(&ccb);
+
+ error = cam_periph_error(&ccb,
+ 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
+ if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
+ cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0,
+ /*reduction*/0, /*timeout*/0, /*getcount_only*/0);
+ if (error != 0)
+ printf("Aborting dump due to I/O error.\n");
+
+ cam_periph_unlock(periph);
+ return (error);
+ }
+
+ /* Flush */
+ xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
+
+ ccb.ccb_h.ccb_state = NDA_CCB_DUMP;
+ nda_nvme_flush(softc, &ccb.nvmeio);
+ xpt_polled_action(&ccb);
+
+ error = cam_periph_error(&ccb,
+ 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
+ if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
+ cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0,
+ /*reduction*/0, /*timeout*/0, /*getcount_only*/0);
+ if (error != 0)
+ xpt_print(periph->path, "flush cmd failed\n");
+ cam_periph_unlock(periph);
+ return (error);
+}
+
+static void
+ndainit(void)
+{
+ cam_status status;
+
+ /*
+ * Install a global async callback. This callback will
+ * receive async callbacks like "new device found".
+ */
+ status = xpt_register_async(AC_FOUND_DEVICE, ndaasync, NULL, NULL);
+
+ if (status != CAM_REQ_CMP) {
+ printf("nda: Failed to attach master async callback "
+ "due to status 0x%x!\n", status);
+ } else if (nda_send_ordered) {
+
+ /* Register our event handlers */
+ if ((EVENTHANDLER_REGISTER(power_suspend, ndasuspend,
+ NULL, EVENTHANDLER_PRI_LAST)) ==
NULL)
+ printf("ndainit: power event registration failed!\n");
+ if ((EVENTHANDLER_REGISTER(shutdown_post_sync, ndashutdown,
+ NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
+ printf("ndainit: shutdown event registration failed!\n");
+ }
+}
+
+/*
+ * Callback from GEOM, called when it has finished cleaning up its
+ * resources.
+ */
+static void
+ndadiskgonecb(struct disk *dp)
+{
+ struct cam_periph *periph;
+
+ periph = (struct cam_periph *)dp->d_drv1;
+
+ cam_periph_release(periph);
+}
+
+static void
+ndaoninvalidate(struct cam_periph *periph)
+{
+ struct nda_softc *softc;
+
+ softc = (struct nda_softc *)periph->softc;
+
+ /*
+ * De-register any async callbacks.
+ */
+ xpt_register_async(0, ndaasync, periph, periph->path);
+#ifdef CAM_IO_STATS
+ softc->invalidations++;
+#endif
+
+ /*
+ * Return all queued I/O with ENXIO.
+ * XXX Handle any transactions queued to the card
+ * with XPT_ABORT_CCB.
+ */
+ cam_iosched_flush(softc->cam_iosched, NULL, ENXIO);
+
+ disk_gone(softc->disk);
+}
+
+static void
+ndacleanup(struct cam_periph *periph)
+{
+ struct nda_softc *softc;
+
+ softc = (struct nda_softc *)periph->softc;
+
+ cam_periph_unlock(periph);
+
+ cam_iosched_fini(softc->cam_iosched);
+
+ /*
+ * If we can't free the sysctl tree, oh well...
+ */
+ if ((softc->flags & NDA_FLAG_SCTX_INIT) != 0) {
+#ifdef CAM_IO_STATS
+ if (sysctl_ctx_free(&softc->sysctl_stats_ctx) != 0)
+ xpt_print(periph->path,
+ "can't remove sysctl stats context\n");
+#endif
+ if (sysctl_ctx_free(&softc->sysctl_ctx) != 0)
+ xpt_print(periph->path,
+ "can't remove sysctl context\n");
+ }
+
+ disk_destroy(softc->disk);
+ free(softc, M_DEVBUF);
+ cam_periph_lock(periph);
+}
+
+static void
+ndaasync(void *callback_arg, u_int32_t code,
+ struct cam_path *path, void *arg)
+{
+ struct cam_periph *periph;
+
+ periph = (struct cam_periph *)callback_arg;
+ switch (code) {
+ case AC_FOUND_DEVICE:
+ {
+ struct ccb_getdev *cgd;
+ cam_status status;
+
+ cgd = (struct ccb_getdev *)arg;
+ if (cgd == NULL)
+ break;
+
+ if (cgd->protocol != PROTO_NVME)
+ break;
+
+ /*
+ * Allocate a peripheral instance for
+ * this device and start the probe
+ * process.
+ */
+ status = cam_periph_alloc(ndaregister, ndaoninvalidate,
+ ndacleanup, ndastart,
+ "nda", CAM_PERIPH_BIO,
+ path, ndaasync,
+ AC_FOUND_DEVICE, cgd);
+
+ if (status != CAM_REQ_CMP
+ && status != CAM_REQ_INPROG)
+ printf("ndaasync: Unable to attach to new device "
+ "due to status 0x%x\n", status);
+ break;
+ }
+ case AC_ADVINFO_CHANGED:
+ {
+ uintptr_t buftype;
+
+ buftype = (uintptr_t)arg;
+ if (buftype == CDAI_TYPE_PHYS_PATH) {
+ struct nda_softc *softc;
+
+ softc = periph->softc;
+ disk_attr_changed(softc->disk, "GEOM::physpath",
+ M_NOWAIT);
+ }
+ break;
+ }
+ case AC_LOST_DEVICE:
+ default:
+ cam_periph_async(periph, code, path, arg);
+ break;
+ }
+}
+
+static void
+ndasysctlinit(void *context, int pending)
+{
+ struct cam_periph *periph;
+ struct nda_softc *softc;
+ char tmpstr[80], tmpstr2[80];
+
+ periph = (struct cam_periph *)context;
+
+ /* periph was held for us when this task was enqueued */
+ if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
+ cam_periph_release(periph);
+ return;
+ }
+
+ softc = (struct nda_softc *)periph->softc;
+ snprintf(tmpstr, sizeof(tmpstr), "CAM NDA unit %d",
periph->unit_number);
+ snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
+
+ sysctl_ctx_init(&softc->sysctl_ctx);
+ softc->flags |= NDA_FLAG_SCTX_INIT;
+ softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
+ SYSCTL_STATIC_CHILDREN(_kern_cam_nda), OID_AUTO, tmpstr2,
+ CTLFLAG_RD, 0, tmpstr);
+ if (softc->sysctl_tree == NULL) {
+ printf("ndasysctlinit: unable to allocate sysctl tree\n");
+ cam_periph_release(periph);
+ return;
+ }
+
+ SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
+ OID_AUTO, "unmapped_io", CTLFLAG_RD | CTLFLAG_MPSAFE,
+ &softc->unmappedio, 0, "Unmapped I/O leaf");
+
+ SYSCTL_ADD_INT(&softc->sysctl_ctx,
+ SYSCTL_CHILDREN(softc->sysctl_tree),
+ OID_AUTO,
+ "rotating",
+ CTLFLAG_RD | CTLFLAG_MPSAFE,
+ &nda_rotating_media,
+ 0,
+ "Rotating media");
+
+#ifdef CAM_IO_STATS
+ softc->sysctl_stats_tree = SYSCTL_ADD_NODE(&softc->sysctl_stats_ctx,
+ SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, "stats",
+ CTLFLAG_RD, 0, "Statistics");
+ if (softc->sysctl_stats_tree == NULL) {
+ printf("ndasysctlinit: unable to allocate sysctl tree for
stats\n");
+ cam_periph_release(periph);
+ return;
+ }
+ SYSCTL_ADD_INT(&softc->sysctl_stats_ctx,
+ SYSCTL_CHILDREN(softc->sysctl_stats_tree),
+ OID_AUTO, "timeouts", CTLFLAG_RD | CTLFLAG_MPSAFE,
+ &softc->timeouts, 0,
+ "Device timeouts reported by the SIM");
+ SYSCTL_ADD_INT(&softc->sysctl_stats_ctx,
+ SYSCTL_CHILDREN(softc->sysctl_stats_tree),
+ OID_AUTO, "errors", CTLFLAG_RD | CTLFLAG_MPSAFE,
+ &softc->errors, 0,
+ "Transport errors reported by the SIM.");
+ SYSCTL_ADD_INT(&softc->sysctl_stats_ctx,
+ SYSCTL_CHILDREN(softc->sysctl_stats_tree),
+ OID_AUTO, "pack_invalidations", CTLFLAG_RD | CTLFLAG_MPSAFE,
+ &softc->invalidations, 0,
+ "Device pack invalidations.");
+#endif
+
+ cam_iosched_sysctl_init(softc->cam_iosched, &softc->sysctl_ctx,
+ softc->sysctl_tree);
+
+ cam_periph_release(periph);
+}
+
+static int
+ndagetattr(struct bio *bp)
+{
+ int ret;
+ struct cam_periph *periph;
+
+ periph = (struct cam_periph *)bp->bio_disk->d_drv1;
+ cam_periph_lock(periph);
+ ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
+ periph->path);
+ cam_periph_unlock(periph);
+ if (ret == 0)
+ bp->bio_completed = bp->bio_length;
+ return ret;
+}
+
+static cam_status
+ndaregister(struct cam_periph *periph, void *arg)
+{
+ struct nda_softc *softc;
+ struct disk *disk;
+ struct ccb_pathinq cpi;
+ struct ccb_getdev *cgd;
+ const struct nvme_namespace_data *nsd;
+ const struct nvme_controller_data *cd;
+ char announce_buf[80];
+// caddr_t match;
+ u_int maxio;
+ int quirks;
+
+ cgd = (struct ccb_getdev *)arg;
+ if (cgd == NULL) {
+ printf("ndaregister: no getdev CCB, can't register device\n");
+ return(CAM_REQ_CMP_ERR);
+ }
+ nsd = cgd->nvme_data;
+ cd = cgd->nvme_cdata;
+
+ softc = (struct nda_softc *)malloc(sizeof(*softc), M_DEVBUF,
+ M_NOWAIT | M_ZERO);
+
+ if (softc == NULL) {
+ printf("ndaregister: Unable to probe new device. "
+ "Unable to allocate softc\n");
+ return(CAM_REQ_CMP_ERR);
+ }
+
+ if (cam_iosched_init(&softc->cam_iosched, periph) != 0) {
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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