linux-toradex.git/arch/s390/include/asm/ccwdev.h, branch v5.18

s390/cio: remove duplicate struct ccw1 declaration

2021-04-05T09:30:57+00:00

struct ccw1 is declared twice. One has been declared
at 21st line. Remove the duplicate.

Signed-off-by: Wan Jiabing 
Acked-by: Vineeth Vijayan 
Signed-off-by: Heiko Carstens

Merge tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block

2020-12-16T21:09:32+00:00

Pull block driver updates from Jens Axboe:
 "Nothing major in here:

   - NVMe pull request from Christoph:
        - nvmet passthrough improvements (Chaitanya Kulkarni)
        - fcloop error injection support (James Smart)
        - read-only support for zoned namespaces without Zone Append
          (Javier González)
        - improve some error message (Minwoo Im)
        - reject I/O to offline fabrics namespaces (Victor Gladkov)
        - PCI queue allocation cleanups (Niklas Schnelle)
        - remove an unused allocation in nvmet (Amit Engel)
        - a Kconfig spelling fix (Colin Ian King)
        - nvme_req_qid simplication (Baolin Wang)

   - MD pull request from Song:
        - Fix race condition in md_ioctl() (Dae R. Jeong)
        - Initialize read_slot properly for raid10 (Kevin Vigor)
        - Code cleanup (Pankaj Gupta)
        - md-cluster resync/reshape fix (Zhao Heming)

   - Move null_blk into its own directory (Damien Le Moal)

   - null_blk zone and discard improvements (Damien Le Moal)

   - bcache race fix (Dongsheng Yang)

   - Set of rnbd fixes/improvements (Gioh Kim, Guoqing Jiang, Jack Wang,
     Lutz Pogrell, Md Haris Iqbal)

   - lightnvm NULL pointer deref fix (tangzhenhao)

   - sr in_interrupt() removal (Sebastian Andrzej Siewior)

   - FC endpoint security support for s390/dasd (Jan Höppner, Sebastian
     Ott, Vineeth Vijayan). From the s390 arch guys, arch bits included
     as it made it easier for them to funnel the feature through the
     block driver tree.

   - Follow up fixes (Colin Ian King)"

* tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block: (64 commits)
  block: drop dead assignments in loop_init()
  sr: Remove in_interrupt() usage in sr_init_command().
  sr: Switch the sector size back to 2048 if sr_read_sector() changed it.
  cdrom: Reset sector_size back it is not 2048.
  drivers/lightnvm: fix a null-ptr-deref bug in pblk-core.c
  null_blk: Move driver into its own directory
  null_blk: Allow controlling max_hw_sectors limit
  null_blk: discard zones on reset
  null_blk: cleanup discard handling
  null_blk: Improve implicit zone close
  null_blk: improve zone locking
  block: Align max_hw_sectors to logical blocksize
  null_blk: Fail zone append to conventional zones
  null_blk: Fix zone size initialization
  bcache: fix race between setting bdev state to none and new write request direct to backing
  block/rnbd: fix a null pointer dereference on dev->blk_symlink_name
  block/rnbd-clt: Dynamically alloc buffer for pathname & blk_symlink_name
  block/rnbd: call kobject_put in the failure path
  Documentation/ABI/rnbd-srv: add document for force_close
  block/rnbd-srv: close a mapped device from server side.
  ...

s390/cio: remove pm support from ccw bus driver

2020-12-02T17:19:25+00:00

As part of removing broken pm-support from s390 arch, remove
the pm callbacks from ccw-bus driver.The power-management functions
are unused since the 'commit 394216275c7d ("s390: remove broken
hibernate / power management support")'.

Signed-off-by: Vineeth Vijayan 
Reviewed-by: Peter Oberparleiter 
Signed-off-by: Heiko Carstens

s390/cio: fix kernel-doc markups in cio driver.

2020-11-20T18:19:10+00:00

Fix typo in the kernel-doc markups
	1. ccw driver -> ccw_driver
	2. ccw_device_id_is_equal() -> ccw_dev_id_is_equal

Signed-off-by: Mauro Carvalho Chehab 
Reviewed-by: Cornelia Huck 
[vneethv@linux.ibm.com: slight modification in the changelog]
Reviewed-by: Vineeth Vijayan 
Signed-off-by: Heiko Carstens

s390/cio: Add support for FCES status notification

2020-11-16T15:14:38+00:00

Fibre Channel Endpoint-Security event is received as an sei:nt0 type
in the CIO layer. This information needs to be shared with the
CCW device drivers using the path_events callback.

Co-developed-by: Sebastian Ott 
Signed-off-by: Vineeth Vijayan 
Signed-off-by: Sebastian Ott 
Signed-off-by: Stefan Haberland 
Reviewed-by: Peter Oberparleiter 
Acked-by: Vasily Gorbik 
Signed-off-by: Jens Axboe

s390/cio: Helper functions to read CSSID, IID, and CHID

2020-09-15T20:21:46+00:00

Add helper functions to expose Channel Subsystem ID (CSSID), MIF Image Id
(IID), Channel ID (CHID) and Channel Path ID (CHPID).
These values are required by the qeth driver's exploitation of network-
address-change-notifications to determine which entries belong to this
interface.

Store the Partition identifier in System log, as this may be used to map
a Linux view to a Hardware view for debugging purpose.

Signed-off-by: Alexandra Winter 
Reviewed-by: Vineeth Vijayan 
Signed-off-by: Julian Wiedmann 
Acked-by: Heiko Carstens 
Signed-off-by: David S. Miller

s390/cio: Add new Operation Code OC3 to PNSO

2020-09-15T20:21:46+00:00

Add support for operation code 3 (OC3) of the
Perform-Network-Subchannel-Operations (PNSO) function
of the Channel-Subsystem-Call (CHSC) instruction.

PNSO provides 2 operation codes:
OC0 - BRIDGE_INFO
OC3 - ADDR_INFO (new)

Extend the function calls to *pnso* to pass the OC and
add new response code 0108.

Support for OC3 is indicated by a flag in the css_general_characteristics.

Signed-off-by: Alexandra Winter 
Reviewed-by: Julian Wiedmann 
Reviewed-by: Peter Oberparleiter 
Reviewed-by: Vineeth Vijayan 
Signed-off-by: Julian Wiedmann 
Acked-by: Heiko Carstens 
Signed-off-by: David S. Miller

s390/cio, s390/qeth: cleanup PNSO CHSC

2020-05-28T10:21:55+00:00

CHSC3D (PNSO - perform network subchannel operation) is used for
OC0 (Store-network-bridging-information) as well as for
OC3 (Store-network-address-information). So common fields are renamed
from *brinfo* to *pnso*.
Also *_bridge_host_* is changed into *_addr_change_*, e.g.
qeth_bridge_host_event to qeth_addr_change_event, for the
same reasons.
The keywords in the card traces are changed accordingly.

Remove unused L3 types, as PNSO will only return Layer2 entries.

Make PNSO CHSC implementation more consistent with existing API usage:
Add new function ccw_device_pnso() to drivers/s390/cio/device_ops.c and
the function declaration to arch/s390/include/asm/ccwdev.h, which takes
a struct ccw_device * as parameter instead of schid and calls
chsc_pnso().

PNSO CHSC has no strict relationship to qdio. So move the calling
function from qdio to qeth_l2 and move the necessary structures to a
new file arch/s390/include/asm/chsc.h.

Do response code evaluation only in chsc_error_from_response() and
use return code in all other places. qeth_anset_makerc() was meant to
evaluate the PNSO response code, but never did, because pnso_rc was
already non-zero.

Indentation was corrected in some places.

Signed-off-by: Alexandra Winter 
Reviewed-by: Peter Oberparleiter 
Reviewed-by: Vineeth Vijayan 
Reviewed-by: Julian Wiedmann 
Signed-off-by: Vasily Gorbik

s390/cio: add basic protected virtualization support

2019-06-15T10:25:00+00:00

As virtio-ccw devices are channel devices, we need to use the
dma area within the common I/O layer for any communication with
the hypervisor.

Note that we do not need to use that area for control blocks
directly referenced by instructions, e.g. the orb.

It handles neither QDIO in the common code, nor any device type specific
stuff (like channel programs constructed by the DASD driver).

An interesting side effect is that virtio structures are now going to
get allocated in 31 bit addressable storage.

Signed-off-by: Halil Pasic 
Reviewed-by: Sebastian Ott 
Reviewed-by: Cornelia Huck 
Reviewed-by: Michael Mueller 
Tested-by: Michael Mueller 
Signed-off-by: Heiko Carstens

s390/cio: add helper to query utility strings per given ccw device

2018-05-23T06:06:56+00:00

Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky