Commit Graph

663188 Commits

Author SHA1 Message Date
Dave Airlie
65d1086c44 Linux 4.11-rc3
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BackMerge tag 'v4.11-rc3' into drm-next

Linux 4.11-rc3 as requested by Daniel
2017-03-23 12:05:13 +10:00
Dave Airlie
edd849e544 Merge tag 'drm-misc-next-2017-03-21' of git://anongit.freedesktop.org/git/drm-misc into drm-next
drm-misc for 4.12, 2nd attempt this week:

- topic branch from Jon Corbet for the new graph kerneldoc support
- lots of graphs for kms/atomic things using the above
- some vblank query tuning from Chris
- gem/cma_fops macros
- moar docs

Driver stuff:
- vc4 hdmi audio, yay (Eric)
- dw-hdmi polish from a bunch of people
- some rockchip dp updates that didn't make last week (Chris Zhong)
- misc bridge&driver updates

* tag 'drm-misc-next-2017-03-21' of git://anongit.freedesktop.org/git/drm-misc: (37 commits)
  drm/edid: detect SCDC support in HF-VSDB
  drm/edid: detect SCDC support in HF-VSDB
  drm/edid: check for HF-VSDB block
  drm: Add SCDC helpers
  drm: bridge: dw-hdmi: add HDMI vendor specific infoframe config
  drm/bridge: dw_hdmi: support i2c extended read mode
  drm/msm: add stubs for msm_{perf,rd}_debugfs_cleanup
  drm: bochs: Don't remove uninitialized fbdev framebuffer
  drm: vc4: remove redundant check of plane being non-null
  drm/vc4: use platform_register_drivers
  dma-fence: add dma_fence_match_context helper
  drm/vc4: Add HDMI audio support
  dt-bindings: Document the dmas and dma-names properties for VC4 HDMI
  drm/atmel-hlcdc: Fix suspend/resume implementation
  drm: Skip the waitqueue setup for vblank queries
  drm: Defer disabling the vblank IRQ until the next interrupt (for instant-off)
  drm/doc: atomic overview, with graph
  drm/doc: diagram for mode objects and properties
  drm/doc: Consistent kerneldoc include order
  drm/doc: Add KMS overview graphs
  ...
2017-03-23 08:53:41 +10:00
Dave Airlie
be5df20a34 Merge tag 'drm-intel-next-2017-03-20' of git://anongit.freedesktop.org/git/drm-intel into drm-next
More in i915 for 4.12:

- designware i2c fixes from Hans de Goede, in a topic branch shared
  with other subsystems (maybe, they didn't confirm, but requested the
  pull)
- drop drm_panel usage from the intel dsi vbt panel (Jani)
- vblank evasion improvements and tracing (Maarten and Ville)
- clarify spinlock irq semantics again a bit (Tvrtko)
- new ->pwrite backend hook (right now just for shmem pageche writes),
  from Chris
- more planar/ccs work from Ville
- hotplug safe connector iterators everywhere
- userptr fixes (Chris)
- selftests for cache coloring eviction (Matthew Auld)
- extend debugfs drop_caches interface for shrinker testing (Chris)
- baytrail "the rps kills the machine" fix (Chris)
- use new atomic state iterators, a lot (Maarten)
- refactor guc/huc code some (Arkadiusz Hiler)
- tighten breadcrumbs rbtree a bit (Chris)
- improve wrap-around and time handling in rps residency counters
  (Mika)
- split reset-in-progress in two flags, backoff and handoff (Chris)
- other misc reset improvements from a few people
- bunch of vgpu interaction fixes with recent code changes
- misc stuff all over, as usual

* tag 'drm-intel-next-2017-03-20' of git://anongit.freedesktop.org/git/drm-intel: (144 commits)
  drm/i915: Update DRIVER_DATE to 20170320
  drm/i915: Initialise i915_gem_object_create_from_data() directly
  drm/i915: Correct error handling for i915_gem_object_create_from_data()
  drm/i915: i915_gem_object_create_from_data() doesn't require struct_mutex
  drm/i915: Retire an active batch pool object rather than allocate new
  drm/i915: Add i810/i815 pci-ids for completeness
  drm/i915: Skip execlists_dequeue() early if the list is empty
  drm/i915: Stop using obj->obj_exec_link outside of execbuf
  drm/i915: Squelch WARN for VLV_COUNTER_CONTROL
  drm/i915/glk: Enable pooled EUs for Geminilake
  drm/i915: Remove superfluous i915_add_request_no_flush() helper
  drm/i915/vgpu: Neuter forcewakes for VGPU more thoroughly
  drm/i915: Fix vGPU balloon for ggtt guard page
  drm/i915: Avoid use-after-free of ctx in request tracepoints
  drm/i915: Assert that the context pin_counts do not overflow
  drm/i915: Wait for reset to complete before returning from debugfs/i915_wedged
  drm/i915: Restore engine->submit_request before unwedging
  drm/i915: Move engine->submit_request selection to a vfunc
  drm/i915: Split I915_RESET_IN_PROGRESS into two flags
  drm/i915: make context status notifier head be per engine
  ...
2017-03-23 08:47:23 +10:00
Shashank Sharma
62c58af32c drm/edid: detect SCDC support in HF-VSDB
This patch does following:
- Adds a new structure (drm_hdmi_info) in drm_display_info.
  This structure will be used to save and indicate if sink
  supports advanced HDMI 2.0 features
- Adds another structure drm_scdc within drm_hdmi_info, to
  reflect scdc support and capabilities in connected HDMI 2.0 sink.
- Checks the HF-VSDB block for presence of SCDC, and marks it
  in scdc structure
- If SCDC is present, checks if sink is capable of generating
  SCDC read request, and marks it in scdc structure.

V2: Addressed review comments
  Thierry:
  - Fix typos in commit message and make abbreviation consistent
    across the commit message.
  - Change structure object name from hdmi_info -> hdmi
  - Fix typos and abbreviations in description of structure drm_hdmi_info
    end the description with a full stop.
  - Create a structure drm_scdc, and keep all information related to SCDC
    register set (supported, read request supported) etc in it.

  Ville:
  - Change rr -> read_request
  - Call drm_detect_scrambling function drm_parse_hf_vsdb so that all
    of HF-VSDB parsing can be kept in same function, in incremental
    patches.

V3: Rebase.
V4: Rebase.
V5: Rebase.
V6: Addressed review comments from Ville
  - Add clock rate calculations for 1/10 and 1/40 ratios
  - Remove leftovers from old patchset
V7: Added R-B from Jose.
V8: Rebase.
V9: Rebase.
V10: Rebase.

Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1489404244-16608-5-git-send-email-shashank.sharma@intel.com
2017-03-21 10:15:56 +02:00
Shashank Sharma
afa1c76365 drm/edid: detect SCDC support in HF-VSDB
This patch does following:
- Adds a new structure (drm_hdmi_info) in drm_display_info.
  This structure will be used to save and indicate if sink
  supports advanced HDMI 2.0 features
- Adds another structure drm_scdc within drm_hdmi_info, to
  reflect scdc support and capabilities in connected HDMI 2.0 sink.
- Checks the HF-VSDB block for presence of SCDC, and marks it
  in scdc structure
- If SCDC is present, checks if sink is capable of generating
  SCDC read request, and marks it in scdc structure.

V2: Addressed review comments
 Thierry:
 - Fix typos in commit message and make abbreviation consistent
   across the commit message.
 - Change structure object name from hdmi_info -> hdmi
 - Fix typos and abbreviations in description of structure drm_hdmi_info
   end the description with a full stop.
 - Create a structure drm_scdc, and keep all information related to SCDC
   register set (supported, read request supported) etc in it.

Ville:
 - Change rr -> read_request
 - Call drm_detect_scrambling function drm_parse_hf_vsdb so that all
   of HF-VSDB parsing can be kept in same function, in incremental
   patches.

V3: Rebase.
V4: Rebase.
V5: Rebase.
V6: Rebase.
V7: Added R-B from Jose.
V8: Rebase.
V9: Rebase.
V10: Rebase.

Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1489404244-16608-4-git-send-email-shashank.sharma@intel.com
2017-03-21 10:15:51 +02:00
Thierry Reding
50dd1bd1e2 drm/edid: check for HF-VSDB block
This patch implements a small function that finds if a
given CEA db is hdmi-forum vendor specific data block
or not.

V2: Rebase.
V3: Added R-B from Jose.
V4: Rebase
V5: Rebase
V6: Rebase
V7: Rebase
V8: Rebase
V9: Rebase
V10: Rebase

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1489404244-16608-3-git-send-email-shashank.sharma@intel.com
2017-03-21 10:15:47 +02:00
Thierry Reding
3ad33ae2bc drm: Add SCDC helpers
SCDC is a mechanism defined in the HDMI 2.0 specification that allows
the source and sink devices to communicate.

This commit introduces helpers to access the SCDC and provides the
symbolic names for the various registers defined in the specification.

V2: Rebase.
V3: Added R-B from Jose.
V4: Rebase
V5: Addressed review comments from Ville
 - Handle the I2c return values in a better way (dp_dual_mode)
 - Make the macros for SCDC Major/Minor more readable, by adding
   a 'GET' in the macro names
V6: Rebase
V7: Rebase
V8: Rebase
V9: Rebase
V10: Rebase

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1489404244-16608-2-git-send-email-shashank.sharma@intel.com
2017-03-21 10:15:39 +02:00
Nickey Yang
9aa1eca095 drm: bridge: dw-hdmi: add HDMI vendor specific infoframe config
Vendor specific infoframe is mandatory for 4K2K resolution.
Without this, the HDMI protocol compliance fails.

Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1490081777-2232-1-git-send-email-nickey.yang@rock-chips.com
2017-03-21 13:16:32 +05:30
Nickey Yang
94bb4dc132 drm/bridge: dw_hdmi: support i2c extended read mode
"I2C Master Interface Extended Read Mode" implements a segment
pointer-based read operation using the Special Register configuration.

This patch fix https://patchwork.kernel.org/patch/7098101/ mentioned
"The current implementation does not support "I2C Master Interface
Extended Read Mode" to read data addressed by non-zero segment
pointer, this means that if EDID has more than 1 extension blocks,
EDID reading operation won't succeed"

With this patch, dw-hdmi can read EDID data with 1/2/4 blocks.

Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1489978651-16647-1-git-send-email-nickey.yang@rock-chips.com
2017-03-21 13:15:32 +05:30
Arnd Bergmann
3a270e4dcc drm/msm: add stubs for msm_{perf,rd}_debugfs_cleanup
We now call those two functions even when they are not defined
or declared anywhere because DEBUG_FS is disabled:

drivers/gpu/drm/msm/msm_drv.c: In function 'msm_drm_uninit':
drivers/gpu/drm/msm/msm_drv.c:244:2: error: implicit declaration of function 'msm_perf_debugfs_cleanup';did you mean 'msm_framebuffer_cleanup'? [-Werror=implicit-function-declaration]
drivers/gpu/drm/msm/msm_drv.c:245:2: error: implicit declaration of function 'msm_rd_debugfs_cleanup';did you mean 'msm_framebuffer_cleanup'? [-Werror=implicit-function-declaration]

This adds empty stub implementations for that case.

Fixes: 85eac4700e ("drm/msm: Remove msm_debugfs_cleanup()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170320093936.1255573-1-arnd@arndb.de
2017-03-20 15:34:01 +01:00
Gabriel Krisman Bertazi
4fa13dbe8c drm: bochs: Don't remove uninitialized fbdev framebuffer
In the same spirit of the fix for QXL in commit 861078381b ("drm: qxl:
Don't alloc fbdev if emulation is not supported"), prevent the Oops in
the unbind path of Bochs if fbdev emulation is disabled.

[  112.176009] Oops: 0002 [#1] SMP
[  112.176009] Modules linked in: bochs_drm
[  112.176009] CPU: 0 PID: 3002 Comm: bash Not tainted 4.11.0-rc1+ #111
[  112.176009] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[  112.176009] task: ffff8800743bbac0 task.stack: ffffc90000b5c000
[  112.176009] RIP: 0010:mutex_lock+0x18/0x30
[  112.176009] RSP: 0018:ffffc90000b5fc78 EFLAGS: 00010246
[  112.176009] RAX: 0000000000000000 RBX: 0000000000000260 RCX: 0000000000000000
[  112.176009] RDX: ffff8800743bbac0 RSI: ffff8800787176e0 RDI: 0000000000000260
[  112.176009] RBP: ffffc90000b5fc80 R08: ffffffff00000000 R09: 00000000ffffffff
[  112.176009] R10: ffff88007b463650 R11: 0000000000000000 R12: 0000000000000260
[  112.176009] R13: ffff8800787176e0 R14: ffffffffa0003068 R15: 0000000000000060
[  112.176009] FS:  00007f20564c7b40(0000) GS:ffff88007ce00000(0000) knlGS:0000000000000000
[  112.176009] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.176009] CR2: 0000000000000260 CR3: 000000006b89c000 CR4: 00000000000006f0
[  112.176009] Call Trace:
[  112.176009]  drm_mode_object_unregister+0x1e/0x50
[  112.176009]  drm_framebuffer_unregister_private+0x15/0x20
[  112.176009]  bochs_fbdev_fini+0x57/0x70 [bochs_drm]
[  112.176009]  bochs_unload+0x16/0x50 [bochs_drm]
[  112.176009]  drm_dev_unregister+0x37/0xd0
[  112.176009]  drm_put_dev+0x31/0x60
[  112.176009]  bochs_pci_remove+0x10/0x20 [bochs_drm]
[  112.176009]  pci_device_remove+0x34/0xb0
[  112.176009]  device_release_driver_internal+0x150/0x200
[  112.176009]  device_release_driver+0xd/0x10
[  112.176009]  unbind_store+0x108/0x150
[  112.176009]  drv_attr_store+0x20/0x30
[  112.176009]  sysfs_kf_write+0x32/0x40
[  112.176009]  kernfs_fop_write+0x10b/0x190
[  112.176009]  __vfs_write+0x23/0x120
[  112.176009]  ? security_file_permission+0x36/0xb0
[  112.176009]  ? rw_verify_area+0x49/0xb0
[  112.176009]  vfs_write+0xb0/0x190
[  112.176009]  SyS_write+0x41/0xa0
[  112.176009]  entry_SYSCALL_64_fastpath+0x1a/0xa9
[  112.176009] RIP: 0033:0x7f2055bd5620
[  112.176009] RSP: 002b:00007ffed2f487d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  112.176009] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2055bd5620
[  112.176009] RDX: 000000000000000d RSI: 0000000000ee0008 RDI: 0000000000000001
[  112.176009] RBP: 0000000000000001 R08: 00007f2055e94760 R09: 00007f20564c7b40
[  112.176009] R10: 0000000000000073 R11: 0000000000000246 R12: 0000000000000000
[  112.176009] R13: 00007ffed2f48d70 R14: 0000000000000000 R15: 0000000000000000
[  112.176009] Code: 00 00 00 55 be 02 00 00 00 48 89 e5 e8 62 fb ff ff 5d c3 55 48 89 e5 53 48 89 fb e8 53 e9 ff ff 65 48 8b 14 25 40 c4 00 00 31 c0 <f0> 48 0f b1 13 48 85 c0 74 08 48 89 df e8c6 ff ff ff 5b 5d c3
[  112.176009] RIP: mutex_lock+0x18/0x30 RSP: ffffc90000b5fc78
[  112.176009] CR2: 0000000000000260
[  112.205622] ---[ end trace 76189cd7a9bdd155 ]---

Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170317181409.4183-1-krisman@collabora.co.uk
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-20 10:51:39 +01:00
Daniel Vetter
c5bd2e14e8 drm/i915: Update DRIVER_DATE to 20170320
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-03-20 08:21:05 +01:00
Dave Airlie
33d5f513c6 imx-drm PRE/PRG support, deferred plane disabling, separate alpha support
- Initial support for the Prefetch Resolve Engine/Gasket on i.MX6QP,
   improving linear scanout buffer memory bandwidth utilization. This
   will in the future grow reordering support and allow direct scanout
   of Vivante tiled renderbuffers from the GPU.
 - Deferred plane disabling gets rid of some busy waiting in the atomic
   plane disable and crtc disable paths that lead to wait_for_vblank
   timeouts.
 - Add support for RGBA formats with a separate alpha plane, that can
   reduce memory bandwidth utilization for mostly transparent overlay
   planes by skipping color reads for completely transparent regions.
 - Allow moving an active overlay plane without enforcing a modeset.
 - Add 8-bit and 16-bit bayer formats to ipu_cpmem_set_image.
 - Set the base address in ipu_cpmem_set_image even for invalid formats
   to increase robustness against errors.
 - Use drm_plane_helper_check_state in plane atomic_check.
 - Some cleanup.
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Merge tag 'imx-drm-next-2017-03-17' of git://git.pengutronix.de/git/pza/linux into drm-next

imx-drm PRE/PRG support, deferred plane disabling, separate alpha support

- Initial support for the Prefetch Resolve Engine/Gasket on i.MX6QP,
  improving linear scanout buffer memory bandwidth utilization. This
  will in the future grow reordering support and allow direct scanout
  of Vivante tiled renderbuffers from the GPU.
- Deferred plane disabling gets rid of some busy waiting in the atomic
  plane disable and crtc disable paths that lead to wait_for_vblank
  timeouts.
- Add support for RGBA formats with a separate alpha plane, that can
  reduce memory bandwidth utilization for mostly transparent overlay
  planes by skipping color reads for completely transparent regions.
- Allow moving an active overlay plane without enforcing a modeset.
- Add 8-bit and 16-bit bayer formats to ipu_cpmem_set_image.
- Set the base address in ipu_cpmem_set_image even for invalid formats
  to increase robustness against errors.
- Use drm_plane_helper_check_state in plane atomic_check.
- Some cleanup.

* tag 'imx-drm-next-2017-03-17' of git://git.pengutronix.de/git/pza/linux: (22 commits)
  drm/imx: Remove unneeded definition for structure imx_drm_component
  drm/imx: use PRG/PRE when possible
  drm/imx: enable/disable PRG on CRTC enable/disable
  gpu: ipu-v3: only set non-zero AXI ID for IC when PRG is absent
  gpu: ipu-v3: hook up PRG unit
  gpu: ipu-v3: document valid IPUv3 compatibles and extend for i.MX6 QuadPlus
  gpu: ipu-v3: add driver for Prefetch Resolve Gasket
  gpu: ipu-v3: add DT binding for the Prefetch Resolve Gasket
  gpu: ipu-v3: add driver for Prefetch Resolve Engine
  gpu: ipu-v3: add DT binding for the Prefetch Resolve Engine
  drm/imx: ipuv3-plane: add support for separate alpha planes
  drm/imx: extend drm_plane_state_to_eba for separate channel support
  gpu: ipu-v3: add support for separate alpha channels
  drm: add RGB formats with separate alpha plane
  drm/imx: add deferred plane disabling
  drm/imx: don't wait for vblank and stop calling cleanup_planes in commit_tail
  gpu: ipu-v3: add unsynchronised DP channel disabling
  gpu: ipu-v3: remove IRQ dance on DC channel disable
  gpu: ipu-cpmem: add bayer formats to ipu_cpmem_set_image
  gpu: ipu-cpmem: set image base address even for incorrect formats
  ...
2017-03-20 16:49:20 +10:00
Linus Torvalds
97da3854c5 Linux 4.11-rc3 2017-03-19 19:09:39 -07:00
Linus Torvalds
452b94b8c8 mm/swap: don't BUG_ON() due to uninitialized swap slot cache
This BUG_ON() triggered for me once at shutdown, and I don't see a
reason for the check.  The code correctly checks whether the swap slot
cache is usable or not, so an uninitialized swap slot cache is not
actually problematic afaik.

I've temporarily just switched the BUG_ON() to a WARN_ON_ONCE(), since
I'm not sure why that seemingly pointless check was there.  I suspect
the real fix is to just remove it entirely, but for now we'll warn about
it but not bring the machine down.

Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-03-19 19:00:47 -07:00
Linus Torvalds
a07a6e4121 powerpc fixes for 4.11 #5
- Wire up statx() syscall
  - Don't print a warning on memory hotplug when HPT resizing isn't available
 
 Thanks to:
   David Gibson, Chandan Rajendra.
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Merge tag 'powerpc-4.11-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull more powerpc fixes from Michael Ellerman:
 "A couple of minor powerpc fixes for 4.11:

   - wire up statx() syscall

   - don't print a warning on memory hotplug when HPT resizing isn't
     available

  Thanks to: David Gibson, Chandan Rajendra"

* tag 'powerpc-4.11-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries: Don't give a warning when HPT resizing isn't available
  powerpc: Wire up statx() syscall
2017-03-19 18:49:28 -07:00
Linus Torvalds
4571bc5abf Merge branch 'parisc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:

 - Mikulas Patocka added support for R_PARISC_SECREL32 relocations in
   modules with CONFIG_MODVERSIONS.

 - Dave Anglin optimized the cache flushing for vmap ranges.

 - Arvind Yadav provided a fix for a potential NULL pointer dereference
   in the parisc perf code (and some code cleanups).

 - I wired up the new statx system call, fixed some compiler warnings
   with the access_ok() macro and fixed shutdown code to really halt a
   system at shutdown instead of crashing & rebooting.

* 'parisc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix system shutdown halt
  parisc: perf: Fix potential NULL pointer dereference
  parisc: Avoid compiler warnings with access_ok()
  parisc: Wire up statx system call
  parisc: Optimize flush_kernel_vmap_range and invalidate_kernel_vmap_range
  parisc: support R_PARISC_SECREL32 relocation in modules
2017-03-19 18:11:13 -07:00
Linus Torvalds
8aa3417255 Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
 "The bulk of the changes are in qla2xxx target driver code to address
  various issues found during Cavium/QLogic's internal testing (stable
  CC's included), along with a few other stability and smaller
  miscellaneous improvements.

  There are also a couple of different patch sets from Mike Christie,
  which have been a result of his work to use target-core ALUA logic
  together with tcm-user backend driver.

  Finally, a patch to address some long standing issues with
  pass-through SCSI export of TYPE_TAPE + TYPE_MEDIUM_CHANGER devices,
  which will make folks using physical (or virtual) magnetic tape happy"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (28 commits)
  qla2xxx: Update driver version to 9.00.00.00-k
  qla2xxx: Fix delayed response to command for loop mode/direct connect.
  qla2xxx: Change scsi host lookup method.
  qla2xxx: Add DebugFS node to display Port Database
  qla2xxx: Use IOCB interface to submit non-critical MBX.
  qla2xxx: Add async new target notification
  qla2xxx: Export DIF stats via debugfs
  qla2xxx: Improve T10-DIF/PI handling in driver.
  qla2xxx: Allow relogin to proceed if remote login did not finish
  qla2xxx: Fix sess_lock & hardware_lock lock order problem.
  qla2xxx: Fix inadequate lock protection for ABTS.
  qla2xxx: Fix request queue corruption.
  qla2xxx: Fix memory leak for abts processing
  qla2xxx: Allow vref count to timeout on vport delete.
  tcmu: Convert cmd_time_out into backend device attribute
  tcmu: make cmd timeout configurable
  tcmu: add helper to check if dev was configured
  target: fix race during implicit transition work flushes
  target: allow userspace to set state to transitioning
  target: fix ALUA transition timeout handling
  ...
2017-03-19 18:06:31 -07:00
Linus Torvalds
1b8df61908 Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull device-dax fixes from Dan Williams:
 "The device-dax driver was not being careful to handle falling back to
  smaller fault-granularity sizes.

  The driver already fails fault attempts that are smaller than the
  device's alignment, but it also needs to handle the cases where a
  larger page mapping could be established. For simplicity of the
  immediate fix the implementation just signals VM_FAULT_FALLBACK until
  fault-size == device-alignment.

  One fix is for -stable to address pmd-to-pte fallback from the
  original implementation, another fix is for the new (introduced in
  4.11-rc1) pud-to-pmd regression, and a typo fix comes along for the
  ride.

  These have received a build success notification from the kbuild
  robot"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: fix debug output typo
  device-dax: fix pud fault fallback handling
  device-dax: fix pmd/pte fault fallback handling
2017-03-19 15:45:02 -07:00
Himanshu Madhani
6c611d18f3 qla2xxx: Update driver version to 9.00.00.00-k
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:38 -07:00
Quinn Tran
ec7193e260 qla2xxx: Fix delayed response to command for loop mode/direct connect.
Current driver wait for FW to be in the ready state before
processing in-coming commands. For Arbitrated Loop or
Point-to- Point (not switch), FW Ready state can take a while.
FW will transition to ready state after all Nports have been
logged in. In the mean time, certain initiators have completed
the login and starts IO. Driver needs to start processing all
queues if FW is already started.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:38 -07:00
Quinn Tran
482c9dc792 qla2xxx: Change scsi host lookup method.
For target mode, when new scsi command arrive, driver first performs
a look up of the SCSI Host. The current look up method is based on
the ALPA portion of the NPort ID. For Cisco switch, the ALPA can
not be used as the index. Instead, the new search method is based
on the full value of the Nport_ID via btree lib.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:37 -07:00
Himanshu Madhani
c423437e3f qla2xxx: Add DebugFS node to display Port Database
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:37 -07:00
Quinn Tran
15f30a5752 qla2xxx: Use IOCB interface to submit non-critical MBX.
The Mailbox interface is currently over subscribed. We like
to reserve the Mailbox interface for the chip managment and
link initialization. Any non essential Mailbox command will
be routed through the IOCB interface. The IOCB interface is
able to absorb more commands.

Following commands are being routed through IOCB interface

- Get ID List (007Ch)
- Get Port DB (0064h)
- Get Link Priv Stats (006Dh)

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:37 -07:00
Quinn Tran
f1443eebca qla2xxx: Add async new target notification
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:37 -07:00
Anil Gurumurthy
54b9993c8c qla2xxx: Export DIF stats via debugfs
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:36 -07:00
Quinn Tran
be25152c0d qla2xxx: Improve T10-DIF/PI handling in driver.
Add routines to support T10 DIF tag.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:36 -07:00
Quinn Tran
5b33469a05 qla2xxx: Allow relogin to proceed if remote login did not finish
If the remote port have started the login process, then the
PLOGI and PRLI should be back to back. Driver will allow
the remote port to complete the process. For the case where
the remote port decide to back off from sending PRLI, this
local port sets an expiration timer for the PRLI. Once the
expiration time passes, the relogin retry logic is allowed
to go through and perform login with the remote port.

Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:36 -07:00
Quinn Tran
f159b3c7cd qla2xxx: Fix sess_lock & hardware_lock lock order problem.
The main lock that needs to be held for CMD or TMR submission
to upper layer is the sess_lock. The sess_lock is used to
serialize cmd submission and session deletion. The addition
of hardware_lock being held is not necessary. This patch removes
hardware_lock dependency from CMD/TMR submission.

Use hardware_lock only for error response in this case.

Path1
       CPU0                    CPU1
       ----                    ----
  lock(&(&ha->tgt.sess_lock)->rlock);
                               lock(&(&ha->hardware_lock)->rlock);
                               lock(&(&ha->tgt.sess_lock)->rlock);
  lock(&(&ha->hardware_lock)->rlock);

Path2/deadlock
*** DEADLOCK ***
Call Trace:
dump_stack+0x85/0xc2
print_circular_bug+0x1e3/0x250
__lock_acquire+0x1425/0x1620
lock_acquire+0xbf/0x210
_raw_spin_lock_irqsave+0x53/0x70
qlt_sess_work_fn+0x21d/0x480 [qla2xxx]
process_one_work+0x1f4/0x6e0

Cc: <stable@vger.kernel.org>
Cc: Bart Van Assche <Bart.VanAssche@sandisk.com>
Reported-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:08 -07:00
Quinn Tran
8f6fc8d4e7 qla2xxx: Fix inadequate lock protection for ABTS.
Normally, ABTS is sent to Target Core as Task MGMT command.
In the case of error, qla2xxx needs to send response, hardware_lock
is required to prevent request queue corruption.

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:08 -07:00
Quinn Tran
8b666809e1 qla2xxx: Fix request queue corruption.
When FW notify driver or driver detects low FW resource,
driver tries to send out Busy SCSI Status to tell Initiator
side to back off. During the send process, the lock was not held.

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:08 -07:00
Quinn Tran
ae940f2c47 qla2xxx: Fix memory leak for abts processing
Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:08 -07:00
Joe Carnuccio
c4a9b538ab qla2xxx: Allow vref count to timeout on vport delete.
Cc: <stable@vger.kernel.org>
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:27:56 -07:00
Nicholas Bellinger
7d7a743543 tcmu: Convert cmd_time_out into backend device attribute
Instead of putting cmd_time_out under ../target/core/user_0/foo/control,
which has historically been used by parameters needed for initial
backend device configuration, go ahead and move cmd_time_out into
a backend device attribute.

In order to do this, tcmu_module_init() has been updated to create
a local struct configfs_attribute **tcmu_attrs, that is based upon
the existing passthrough_attrib_attrs along with the new cmd_time_out
attribute.  Once **tcm_attrs has been setup, go ahead and point
it at tcmu_ops->tb_dev_attrib_attrs so it's picked up by target-core.

Also following MNC's previous change, ->cmd_time_out is stored in
milliseconds but exposed via configfs in seconds.  Also, note this
patch restricts the modification of ->cmd_time_out to before +
after the TCMU device has been configured, but not while it has
active fabric exports.

Cc: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 16:32:30 -07:00
Mike Christie
af980e46a2 tcmu: make cmd timeout configurable
A single daemon could implement multiple types of devices
using multuple types of real devices that may not support
restarting from crashes and/or handling tcmu timeouts. This
makes the cmd timeout configurable, so handlers that do not
support it can turn if off for now.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 16:32:27 -07:00
Mike Christie
972c7f1679 tcmu: add helper to check if dev was configured
This adds a helper to check if the dev was configured. It
will be used in the next patch to prevent updates to some
config settings after the device has been setup.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 16:32:19 -07:00
Linus Torvalds
93afaa4513 OpenRISC fixes for 4.11
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Merge tag 'openrisc-for-linus' of git://github.com/openrisc/linux

Pull OpenRISC fixes from Stafford Horne:
 "OpenRISC fixes for build issues that were exposed by kbuild robots
  after 4.11 merge. All from allmodconfig builds. This includes:

   - bug in the handling of 8-byte get_user() calls

   - module build failure due to multile missing symbol exports"

* tag 'openrisc-for-linus' of git://github.com/openrisc/linux:
  openrisc: Export symbols needed by modules
  openrisc: fix issue handling 8 byte get_user calls
  openrisc: xchg: fix `computed is not used` warning
2017-03-18 15:50:39 -07:00
Mike Christie
760bf578ed target: fix race during implicit transition work flushes
This fixes the following races:

1. core_alua_do_transition_tg_pt could have read
tg_pt_gp_alua_access_state and gone into this if chunk:

if (!explicit &&
        atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state) ==
           ALUA_ACCESS_STATE_TRANSITION) {

and then core_alua_do_transition_tg_pt_work could update the
state. core_alua_do_transition_tg_pt would then only set
tg_pt_gp_alua_pending_state and the tg_pt_gp_alua_access_state would
not get updated with the second calls state.

2. core_alua_do_transition_tg_pt could be setting
tg_pt_gp_transition_complete while the tg_pt_gp_transition_work
is already completing. core_alua_do_transition_tg_pt then waits on the
completion that will never be called.

To handle these issues, we just call flush_work which will return when
core_alua_do_transition_tg_pt_work has completed so there is no need
to do the complete/wait. And, if core_alua_do_transition_tg_pt_work
was running, instead of trying to sneak in the state change, we just
schedule up another core_alua_do_transition_tg_pt_work call.

Note that this does not handle a possible race where there are multiple
threads call core_alua_do_transition_tg_pt at the same time. I think
we need a mutex in target_tg_pt_gp_alua_access_state_store.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:29 -07:00
Mike Christie
1ca4d4fa3b target: allow userspace to set state to transitioning
Userspace target_core_user handlers like tcmu-runner may want to set the
ALUA state to transitioning while it does implicit transitions. This
patch allows that state when set from configfs.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:28 -07:00
Mike Christie
d7175373f2 target: fix ALUA transition timeout handling
The implicit transition time tells initiators the min time
to wait before timing out a transition. We currently schedule
the transition to occur in tg_pt_gp_implicit_trans_secs
seconds so there is no room for delays. If
core_alua_do_transition_tg_pt_work->core_alua_update_tpg_primary_metadata
needs to write out info to a remote file, then the initiator can
easily time out the operation.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:28 -07:00
Mike Christie
207ee84133 target: Use system workqueue for ALUA transitions
If tcmu-runner is processing a STPG and needs to change the kernel's
ALUA state then we cannot use the same work queue for task management
requests and ALUA transitions, because we could deadlock. The problem
occurs when a STPG times out before tcmu-runner is able to
call into target_tg_pt_gp_alua_access_state_store->
core_alua_do_port_transition -> core_alua_do_transition_tg_pt ->
queue_work. In this case, the tmr is on the work queue waiting for
the STPG to complete, but the STPG transition is now queued behind
the waiting tmr.

Note:
This bug will also be fixed by this patch:
http://www.spinics.net/lists/target-devel/msg14560.html
which switches the tmr code to use the system workqueues.

For both, I am not sure if we need a dedicated workqueue since
it is not a performance path and I do not think we need WQ_MEM_RECLAIM
to make forward progress to free up memory like the block layer does.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:27 -07:00
Mike Christie
0a41457298 target: fail ALUA transitions for pscsi
We do not setup the LU group for pscsi devices, so if you write
a state to alua_access_state that will cause a transition you will
get a NULL pointer dereference.

This patch will fail attempts to try and transition the path
for backend devices that set the TRANSPORT_FLAG_PASSTHROUGH_ALUA
flag.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:26 -07:00
Mike Christie
530c6891b1 target: allow ALUA setup for some passthrough backends
This patch allows passthrough backends to use the core/base LIO
ALUA setup and state checks, but still handle the execution of
commands.

This will allow the target_core_user module to execute STPG and RTPG
in userspace, and not have to duplicate the ALUA state checks, path
information (needed so we can check if command is executable on
specific paths) and setup (rtslib sets/updates the configfs ALUA
interface like it does for iblock or file).

For STPG, the target_core_user userspace daemon, tcmu-runner will
still execute the STPG, and to update the core/base LIO state it
will use the existing configfs interface. For RTPG, tcmu-runner
will loop over configfs and/or cache the state.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:25 -07:00
Mike Christie
2579325ca0 tcmu: return on first Opt parse failure
We only were returing failure if the last opt to be parsed failed.
This has a return failure when we first detect a failure.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:25 -07:00
Mike Christie
3abaa2bfdb tcmu: allow hw_max_sectors greater than 128
tcmu hard codes the hw_max_sectors to 128 which is a litle small.
Userspace uses the max_sectors to report the optimal IO size and
some initiators perform better with larger IOs (open-iscsi seems
to do better with 256 to 512 depending on the test).

(Fix do not display hw max sectors twice - MNC)

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:46:52 -07:00
Nicholas Bellinger
9c28ca4ff8 target: Drop pointless tfo->check_stop_free check
All in-tree fabric drivers provide a tfo->check_stop_free(),
so there is no need to do the extra check within existing
transport_cmd_check_stop_to_fabric() code.

Just to be sure, add a check in target_fabric_tf_ops_check()
to notify any out-of-tree drivers that might be missing it.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:42:50 -07:00
Helge Deller
73580dac76 parisc: Fix system shutdown halt
On those parisc machines which don't provide a software power off
function, the system currently kills the init process at the end of a
shutdown and unexpectedly restarts insteads of halting.
Fix it by adding a loop which will not return.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.9+
2017-03-18 17:27:45 +01:00
Arvind Yadav
74e3f6e63d parisc: perf: Fix potential NULL pointer dereference
Fix potential NULL pointer dereference and clean up
coding style errors (code indent, trailing whitespaces).

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2017-03-18 17:24:43 +01:00
Linus Torvalds
3e51f893de Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU hotplug fix from Thomas Gleixner:
 "A single fix preventing the concurrent execution of the CPU hotplug
  callback install/invocation machinery. Long standing bug caused by a
  massive brain slip of that Gleixner dude, which went unnoticed for
  almost a year"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Serialize callback invocations proper
2017-03-18 08:33:44 -07:00
Linus Torvalds
8d940990f5 Power management fixes for v4.11-rc3
- Fix breakage in the intel_pstate's debugfs interface for PID
    controller tuning (Rafael Wysocki).
 
  - Fix computations related to P-state limits in intel_pstate to
    avoid excessive rounding errors leading to visible inaccuracies
    (Srinivas Pandruvada, Rafael Wysocki).
 
  - Add a missing newline to a message printed by one function in
    the cpufreq core and clean up that function (Rafael Wysocki).
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Merge tag 'pm-4.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix a few more intel_pstate issues and one small issue in the
  cpufreq core.

  Specifics:

   - Fix breakage in the intel_pstate's debugfs interface for PID
     controller tuning (Rafael Wysocki)

   - Fix computations related to P-state limits in intel_pstate to avoid
     excessive rounding errors leading to visible inaccuracies (Srinivas
     Pandruvada, Rafael Wysocki)

   - Add a missing newline to a message printed by one function in the
     cpufreq core and clean up that function (Rafael Wysocki)"

* tag 'pm-4.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: Fix and clean up show_cpuinfo_cur_freq()
  cpufreq: intel_pstate: Avoid percentages in limits-related computations
  cpufreq: intel_pstate: Correct frequency setting in the HWP mode
  cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()
2017-03-17 17:25:14 -07:00