173 Commits

Author SHA1 Message Date
Daniel Verkamp
7dff719f7e nvme: optimize layout of struct nvme_payload
Rather than storing nvme_payload::type explicitly, use the SGL reset
function pointer as an indicator: if reset_sgl_fn is non-NULL, then the
payload is an SGL type; otherwise it is a contiguous buffer type.

This eliminates the one-byte type member from struct nvme_payload,
making it an even 32 bytes instead of 33, allowing the removal of the
awkward packing inside struct nvme_request.

Change-Id: If2a32437a23fe14eb5287e096ac060067296f1dd
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/413175
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2018-06-01 21:01:42 +00:00
Daniel Verkamp
caf85d8f23 nvme: add macros to populate nvme_payload
The definitions of these macros will change in an upcoming patch that
modifies the way nvme_payload is laid out.

Change-Id: Ic6edc18928542b07be7519a72bdbf6babbeb0131
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/413174
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2018-06-01 21:01:42 +00:00
Daniel Verkamp
5c2ccd0628 nvme: add helper function to get payload type
This will simplify upcoming patches that change the way nvme_payload
stores its type.

Change-Id: Idf0a5b8dfd7d66a10f89254d2c5c54fee2968a43
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/413173
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2018-06-01 21:01:42 +00:00
Daniel Verkamp
c4bb0ea600 nvme: add helper to wait for internal commands
Factor out the common pattern of waiting for an internally-submitted
command to complete.  This will give us a convenient central place to
add error checking.

Change-Id: I65334d654d294cfb208fc86d16fa387ac5432254
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/412545
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
2018-05-28 01:43:55 +00:00
Changpeng Liu
65e56caa17 nvme: wrapper request completion callback into a function
When IO is finished SPDK will trigger callback at controller layer,
while here, wrapper the completion callback into a function so
that we can add error injection at this function in following patch.

Change-Id: I7b7a6d278d87fd09a05f51f688398fdf2e9c4e05
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/411630
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-05-24 18:03:25 +00:00
Daniel Verkamp
955b295a58 nvme: make AER callback per-process
For the same reason as commit 31bf5d795e54 ("nvme: make timeout function
per process"), the AER callback also needs to be stored in the
per-process controller data structure.

Change-Id: I41425d81a2ab16c06ef9b900bef6a6128117fcb0
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/410953
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2018-05-22 18:17:43 +00:00
Daniel Verkamp
cbd9c241dc nvme: factor out process lookup into a function
Change-Id: I7598222db5d76c1a1578fbb5935d4348f7c62f54
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/410951
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2018-05-21 18:22:50 +00:00
Young Tack Jin
6442451b10 nvme: add a quirk for identify 0x2
Change-Id: I9cfc237a8514a1d323313851e14576ba2ba69077
Signed-off-by: Young Tack Jin <youngtack.jin@circuitblvd.com>
Reviewed-on: https://review.gerrithub.io/410529
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-05-10 19:38:54 +00:00
Daniel Verkamp
f7b58aea2b nvme: capture VS register at init time
This will be used later instead of retrieving VS (potentially via a Get
property command for Fabrics) multiple times.

The Active NS List code was previously depending on the VER field of the
Identify Controller data, but this was only added with NVMe 1.2, so we
can't rely on it to detect NVMe 1.1 controllers; it is changed to use
the new cache VS value instead.

Change-Id: Iba9ed5ecbc82b4654973438d119daba0c4cf0724
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/408895
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2018-04-30 17:19:07 +00:00
Pawel Wodkowski
f9fae3f3a9 nvme: change num_children to be wider type
uint8_t is too small to handle huge payloads. 32M payload already
overflow this.

Change-Id: I083ba7d3ded25b99571d422b7a3a4e7653a8d231
Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-on: https://review.gerrithub.io/408677
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-04-23 18:20:17 +00:00
Ziye Yang
31bf5d795e nvme: make timeout function per process
Change-Id: I6e58baaeb09580b5f70e1acf5323376ca0b26bbf
Signed-off-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-on: https://review.gerrithub.io/407382
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2018-04-13 12:30:51 -04:00
Changpeng Liu
2d192cf8fb nvme: use AER configuation structure when starting controller
Change-Id: I79dad84d1dc58e61eb36b461b41fbd7ee73631fc
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/406899
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-04-10 15:43:38 -04:00
Ed Rodriguez
06fbf4b34b nvme: Use active namespace list for enumerating namespaces
- Add support for multi page CNS 0x2
 - Use CNS value 0x02 (SPDK_NVME_IDENTIFY_ACTIVE_NS_LIST)
   to query active namespaces
 - Add an API to iterate the active list

Change-Id: Iea524881fa6e3610a7d85ab02a2005a92fd633df
Signed-off-by: John Meneghini <johnm@netapp.com>
Reviewed-on: https://review.gerrithub.io/401957
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-04-02 17:17:40 -04:00
Daniel Verkamp
15bd6999db nvme: add spdk_nvme_ns_get_uuid() function
This function retrieves the UUID from a namespace, if available.

Change-Id: I98c55375948b92eaf429b41fb36dfea4e2b780a2
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/404734
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-03-27 02:43:46 -04:00
Daniel Verkamp
3d57e4a8f4 nvme: unify Identify command helpers
Convert nvme_ctrlr_cmd_identify_controller() and
nvme_ctrlr_cmd_identify_namespace() into a single function,
nvme_ctrlr_cmd_identify(), with generic parameters that should be
suitable for all current callers as well as future users.

These functions were internal-only, so there is no public API change.

Change-Id: I3dbb3e6b00308b67ba1f161f8a6b11b6333fca57
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/404733
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-03-27 02:43:46 -04:00
Daniel Verkamp
c937fab3cb nvme: use uint32_t consistently for NSID values
A few places were accidentally storing namespace IDs in uint16_t.

Change-Id: Iae9d709fb20bc1ac0a584ccd9683b721ce5de961
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/403886
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-03-16 14:15:08 -04:00
Daniel Verkamp
4c06ce9b9d util: add uuid.h to wrap libuuid
This lets us have a common place to put definitions like the length of
the UUID string, as well as abstract away some of the API warts in
libuuid (non-const values, no size checking for uuid_unparse, etc.).

Change-Id: I80607fcd21ce57fdbb8729442fbb721bc71ccb98
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/402176
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
2018-03-08 10:49:51 -05:00
Ehud Naim
c83cd9375b nvme: fixing ctrlr mutex free
adding nvme_ctrlr_destruct_finish because nvme_transport_ctrlr_destruct may
use a destroyed mutex.

nvme_ctrlr_destruct() free "ctrlr_lock" and after that call
nvme_transport_ctrlr_destruct()->nvme_pcie_ctrlr_destruct()(with pci)->
nvme_ctrlr_proc_get_devhandle()->nvme_robust_mutex_lock(&ctrlr->ctrlr_lock);

Change-Id: I55714ea9097d2c9d844a00b5a88fa2d51a3f4469
Signed-off-by: Ehud Naim <ehudn@marvell.com>
Reviewed-on: https://review.gerrithub.io/399605
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2018-02-20 12:31:34 -05:00
Daniel Verkamp
3839639759 nvme: add API to allocate CMB I/O buffers
Change-Id: I2a3c7a272dc08be5a5ecb4339622816482c4cbb0
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Signed-off-by: Stephen Bates <sbates@raithlin.com>
Reviewed-on: https://review.gerrithub.io/397036
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
2018-02-12 19:11:44 -05:00
Changpeng Liu
7e3a11f98b nvme: add doorbell buffer config support
NVMe specification 1.3 added a new Admin command: Doorbell buffer config,
which is used to enhance the performance of host software running in
Virtual Machine, and the Doorbell buffer config feature is only used
for emulated NVMe controllers. There are two buffers: "shadow doorbell"
and "eventidx", host software running in VM will update appropriate
entry in the Shadow doorbell buffer instead of controller's doorbell
registers.

Change-Id: I639ddb5b9a0ca0305bf84035ca2a5e215be06b46
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/383042
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2017-12-06 17:25:54 -05:00
Daniel Verkamp
bb2444f474 nvme: add a per-process attached_ctrlrs list
Only multi-process shared controllers should be inserted into the shared
list in g_spdk_nvme_driver.  To accomplish this, create a second
per-process global list of attached controllers (g_nvme_attached_ctrlrs)
and rename the driver struct field to shared_attached_ctrlrs to clarify
its purpose.  Additionally, a new helper function, nvme_ctrlr_shared(),
returns whether a given controller should be on the shared or
per-process list.

Change-Id: I46d4e558ece8b7fc3d28868e32bb56d794f21aab
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/389190
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2017-11-28 16:21:07 -05:00
Daniel Verkamp
4525fc898f nvme/pcie: use common trid -> ctrlr function
Simplify the PCIe transport by using an existing function to look up a
controller by transport ID.

Change-Id: I261865df1ba23069b052ca64944b7637d70c85ba
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/388701
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2017-11-28 16:21:07 -05:00
Daniel Verkamp
1804f3c528 nvme: move init_ctrlrs out of multi-process struct
Each process should manage its own list of controllers that are
initializing; the list doesn't need to be shared between processes.

This is the first step toward preventing non-PCI controllers from being
added into the shared attached_ctrlrs list.

Change-Id: Ia6f85fe89e28a04f0950da5362bb2f49d1b76da9
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/388695
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2017-11-28 16:21:07 -05:00
GangCao
6368d6c0f5 nvme: add new spdk_nvme_connect() API to directly attach the ctrlr
With this new API, callers can attach one specific ctrlr identified by
the transport ID directly along with optional ctrlr opts. If connecting
to multiple controllers, it is still suggested to use spdk_nvme_probe()
and filter the requested controllers with the probe callback.

Two primary use cases:
1) connecting to the NVMe-oF discovery controller
2) more straightforward way to connect a specific controller (avoiding
the probe callback)

A typical usage of this API with specific ctrlr_opts:
1. struct spdk_nvme_ctrlr_opts user_opts = {}
2. Call spdk_nvme_ctrlr_get_default_ctrlr_opts(&user_opts, sizeof(user_opts))
3. Modify the content of the initialized user_opts with user required value like
   user_opts.num_io_queues = 8
4. Call spdk_nvme_connect(&trid, &user_opts, sizeof(user_opts))

Change-Id: Idf67ee5966f6753918c12604342c892d2f3bbe3a
Signed-off-by: GangCao <gang.cao@intel.com>
Reviewed-on: https://review.gerrithub.io/370634
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-10-09 12:31:12 -04:00
GangCao
dc2fb2ed39 nvme: add a public API to rename spdk_nvme_ctrlr_opts_set_defaults
This change is relating to add a new public API spdk_nvme_connect() under
include/spdk/nvme.h. This new spdk_nvme_connect() API will connect the user
specified trid and have a user optional ctlr opts. Rename this API and make
it as public.

A typical usage of this API as following:
1. struct spdk_nvme_ctrlr_opts user_opts = {}
2. Call spdk_nvme_ctrlr_get_default_ctrlr_opts(&user_opts, sizeof(user_opts))
3. Modify the content of the initialized user_opts with user required value like
   user_opts.num_io_queues = 8
4. Call spdk_nvme_connect(&trid, &user_opts, sizeof(user_opts))

Change-Id: Ideec8247365ebf7dd15069e29821be8ea27b08be
Signed-off-by: GangCao <gang.cao@intel.com>
Reviewed-on: https://review.gerrithub.io/380849
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-10-09 12:31:12 -04:00
GangCao
6f227249fa nvme: add a new opts_size parameter for default ctrlr opts
Add a new parameter for the default ctrlr opts initialization.
This is to make sure future compatibility when SPDK components
are built as a shared library. User's version and SPDK's version
may be in different size.

The change here is to make sure the backward compatibility when
new fields are added in the struct spdk_nvme_ctrlr_opts.

Change-Id: Icfc9640993cb06063b825d4df5835d920dd374e5
Signed-off-by: GangCao <gang.cao@intel.com>
Reviewed-on: https://review.gerrithub.io/380846
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2017-10-05 14:51:20 -04:00
Daniel Verkamp
8acc4ae5da nvme: add controller option to specify host ID
A random host ID is generated per SPDK application startup if the user
doesn't specify a host ID during controller startup.

This also changes the default host NQN for NVMe-oF connections to a
random UUID NQN based on the host ID.

Change-Id: Ib0f70dd63e53087716842b412a1f134a9991d4da
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/380528
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
2017-09-29 11:43:25 -04:00
Changpeng Liu
8181c59293 nvme: override the default queue depth if users specified the value
SPDK already uses DEFAULT_IO_QUEUE_SIZE and MQES to decide the correct
queue depth of NVMe queue pair, hardcoded it to NVME_IO_ENTRIES(512)
does not make sense if users want to set queue depth bigger than 512.

Change-Id: Iaa73fc79e055292ae9bd19af0c8c12f257ae5c46
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/379052
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2017-09-20 19:58:49 -04:00
Ziye Yang
5ea96e511a nvme: change the default hostnqn
Reason: In our default configuration, we use
nqn.2016-06.io.spdk:init

Change-Id: Ic840b41230f53d5d97166a38faf7c2109fa6b41a
Signed-off-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-on: https://review.gerrithub.io/377463
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2017-09-07 19:15:49 -04:00
Konstantin Vyshetsky
305088e594 nvme: Obtain number of queues controller allocated via "Get Features/Number of Queues"
Certain vendors do not report correct number of queues allocated in "Set Features/Number of Queues" completion CDW0 per spec.
As a work around, issue "Get Features/Number of Queues" and rely on the value provided there.

Change-Id: Ib9cc4dcf1bdb732413becc751883a7311c6f672f
Signed-off-by: Konstantin Vyshetsky <kon.vyshetsky@stellus.com>
Reviewed-on: https://review.gerrithub.io/375234
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2017-08-23 12:14:43 -04:00
Daniel Verkamp
2eec131e4d nvme: decouple NVMe memory page size from PAGE_SIZE
PAGE_SIZE is the host memory page size, which is irrelevant for the NVMe
driver; what we actually care about is the NVMe controller's memory page
size, CC.MPS.

This patch cleans up the uses of PAGE_SIZE in the NVMe driver; the
behavior is still the same in all cases today, since normal NVMe
controllers report a minimum page size of 4096.

Change-Id: I56fce2770862329a9ce25370722f44269234ed46
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/374371
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2017-08-17 12:52:12 -04:00
Daniel Verkamp
99f838a36a nvme: add support for NS Optimal IO Boundary
An optional field was added in NVMe 1.3 to indicate the optimal I/O
boundary that should not be crossed for best performance.  This is
equivalent to the existing Intel-specific stripe size quirk.

Add support for the new NOIOB field and move the current quirk-based
code so it is updated in nvme_ns_identify_update().

Change-Id: Ifc4974f51dcd59e7f24565d8d5159b036458c6e5
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/373132
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2017-08-16 15:55:29 -04:00
Seth Howell
5e79d6b8c6 lib/nvme: add a quirk for read zero after unmap
Unmapped blocks on some older nvme devices will read zero even if the
device does not explicitly define the unmap behavior.

Change-Id: Ia825a406cbd01f89192c300cfe35013fb4aed715
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/372006
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-08-07 18:00:51 -04:00
Jim Harris
002660c4f0 nvme: add transport get_max_sges abstraction
For pcie, this just equals the number of SGLs we can fit
into the per-tracker memory.

For rdma, this is just set to 1 for now since nvme_rdma.c
does not support multiple SGEs yet.  Once that support is
added, this will change to use MSDBD (Maximum SGL Data Block
Descriptors) instead from the controller identify data.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I34a4c546b5ff46918a296a73ed8cbcc6c9879d5a

Reviewed-on: https://review.gerrithub.io/372358
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2017-08-02 17:15:21 -04:00
Daniel Verkamp
ce4fcbce71 nvme: add I/O qpair creation options
Add a new struct spdk_nvme_io_qpair_opts to allow the user to override
controller options on a per-I/O qpair basis.

Existing callers with qprio == 0 can be updated to:

  ... = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, NULL, 0);

Callers that need to specify a non-default qprio should be updated to:

  struct spdk_nvme_io_qpair_opts opts;
  spdk_nvme_ctrlr_get_default_io_qpair_opts(ctrlr, &opts, sizeof(opts));
  opts.qprio = SPDK_NVME_QPRIO_...;
  ... = spdk_nvme_ctrlr_alloc_io_qpair(ctrlr, &opts, sizeof(opts));

Change-Id: I8ac3ea369535cfde759abbe75e1d974b6450a800
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/369676
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2017-07-18 18:33:20 -04:00
GangCao
619ab1a700 nvme: no need to send abort notification for died application
Change-Id: I7005159b2c4cc71c249cfdc4adbf8500f006fb1c
Signed-off-by: GangCao <gang.cao@intel.com>
Reviewed-on: https://review.gerrithub.io/365646
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-06-20 15:43:21 -04:00
GangCao
b347d551e8 nvme: detach the pci device with calling process's own devhandle
Change-Id: I2693b4bd29e0500379d5e399723aec7e44bffca3
Signed-off-by: GangCao <gang.cao@intel.com>
2017-05-16 10:35:29 -07:00
Ben Walker
b961d9cc12 include: Move the remainder of the code base to stdinc.h
Change-Id: I6a142feeaad3117bd3c75e7c5cb7231a1cfa78ae
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
2017-05-08 13:20:36 -07:00
Jim Harris
13f8cf1536 nvme: add NVME_QUIRK_DELAY_AFTER_QUEUE_ALLOC
The VirtualBox emulated NVMe device will intermittently
hang on the first read/write command after an I/O
qpair has been allocated.  The frequency of the hang
diminishes if a delay is added after allocating the I/O
qpair - until it disappears completely with a 100us delay.
So add a quirk to insert this delay.

Note - the 100us delay was tested by running
the hello_world example app 50000 times.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I237e31b1b8a1a1e28262851ae0a21cd7345f0f1a
2017-05-01 10:22:18 -07:00
Jim Harris
b5b9410da3 nvme: remove DELAY_BEFORE_ENABLE quirk and always wait 100us
A 100us is so small that applying the quirk to the specific
SSDs that require the delay is more trouble than it is worth.
So remove the quirk and always wait 100us before re-enabling
the NVMe SSD during initialization.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Id6a8cc6e35d103fffdf135580301fc3e5b27e722
2017-04-17 11:56:36 -07:00
Daniel Verkamp
5742e9b9e7 nvme: allocate requests on a per-queue basis
Change-Id: I7bec816e518a0a6f2e9fb719128c83d4b908d46c
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-04-12 21:05:24 -07:00
Daniel Verkamp
cd13f280f4 nvme: track qpair within nvme_request
Change-Id: Ia40a1e79db6327c4693731e9bb7a57810795429d
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-04-12 21:05:23 -07:00
Ben Walker
193f4f8392 nvme: Queue aborts beyond the abort command limit
Queue aborts that would exceed the abort command limit
in software as a convenience for the user.

Change-Id: I8c1f0380984cc6c0cdb453db961939a7f571b336
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
2017-04-12 13:11:01 -07:00
Ben Walker
36a793ad63 nvme: Add a quirk to delay before enabling
It has been discovered that some devices require
a very small delay before writing CC.EN to 1 after
CSTS.RDY goes to 0.

Change-Id: I73d31726d17ebf5bbec7ee528e2f98fcd05234dd
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
2017-04-03 11:18:15 -07:00
Daniel Verkamp
b55d837e7b nvme: only include x86intrin.h for x86 platforms
The actual uses of intrinsics are already guarded by feature-specific
ifdefs in nvme_pcie_copy_command(), but the header itself should also
only be included when it will actually be needed.

Change-Id: Ife65d6432b8dfd9d9db80fe4e385ab76491874c0
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-03-07 12:44:10 -07:00
Jim Harris
37ccb50c50 nvme: allow for deletion of I/O qpairs during their completion context
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ibc6566e9248cd7004aa5d4374f32b519062ed6d9
2017-03-06 14:01:25 -07:00
Isaac Otsiabah
687e93c4a5 nvme: export abort command as public API 2017-02-27 10:44:17 -07:00
Daniel Verkamp
59fc5ba613 nvme: fix extended LBA block size calculations
For namespaces with end-to-end protection information, metadata size
of exactly 8 bytes, and extended LBA configured, the NVMe driver would
calculate the size of the data block incorrectly.  The NVMe spec has a
special provision for this specific case (8-byte metadata only) and
PRACT = 1 that requires that the host does not send the metadata as part
of the host memory buffer.

To fix this, clean up the calculation of the per-block data transfer
size by adding a new extended_lba_size field in the namespace, which
represents the total size of data to be transferred per block based on
the namespace's configured metadata size and whether it transfers
metadata as part of the data buffer.  Then add the special case for
PRACT = 1 and PI configured and extended LBA in the R/W helper
functions.

Change-Id: I0b383a58c773cac06e6c018858b57129064c6059
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-02-10 10:24:26 -07:00
Daniel Verkamp
84d904841f util: move common helper functions to util.h
These were repeated a few different places, so pull them into a common
header file.

Change-Id: Id807fa2cfec0de2e0363aeb081510fb801781985
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-02-10 09:38:52 -07:00
Daniel Verkamp
018e6afff2 nvme: remove ctrlr_get_pci_id transport callback
The PCIe transport initializes the quirks directly, so the generic hook
to get PCI ID is no longer necessary.  This path was dead code.

Change-Id: I25bdaa598db53e4312a264d9d8356d1b416696e5
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-01-31 14:50:40 -07:00