Commit Graph

17879 Commits

Author SHA1 Message Date
Xinyun Liu
606a745944 drm/i915/gvt: correct mask setting for CSFE_CHICKEN1
CSFE_CHICKEN1(0x20d4) needs access with mask. This is caught in AcrnGT
conformance check test:

[drm:intel_gvt_vgpu_conformance_check]
	*ERROR* gvt: vgpu1 unconformance mmio 0x20d4:0x40004,0x4

Signed-off-by: Xinyun Liu <xinyun.liu@intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-10-31 17:09:01 +08:00
Hang Yuan
bc0686ff5f drm/i915/gvt: support inconsecutive partial gtt entry write
Previously we assumed two 4-byte writes to the same PTE coming in sequence.
But recently we observed inconsecutive partial write happening as well. So
this patch enhances the previous solution. It now uses a list to save more
partial writes. If one partial write can be combined with another one in
the list to construct a full PTE, update its shadow entry. Otherwise, save
the partial write in the list.

v2: invalidate old entry and flush ggtt (Zhenyu)
v3: split old ggtt page unmap to another patch (Zhenyu)
v4: refine codes (Zhenyu)

Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Cc: Yan Zhao <yan.y.zhao@intel.com>
Cc: Xiaolin Zhang <xiaolin.zhang@intel.com>
Cc: Zhenyu Wang <zhenyu.z.wang@intel.com>
Reviewed-by: Xiaolin Zhang <xiaolin.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-10-31 17:08:45 +08:00
Hang Yuan
f42259ef81 drm/i915/gvt: invalidate old ggtt page when update ggtt entry
Previously only cancelled dma map of a ggtt page when the ggtt entry was
cleared. This patch will cancel dma map of an old ggtt page as well when
the ggtt entry is updated with new page address.

Fixes: 7598e8700e9a(drm/i915/gvt: Missed to cancel dma map for ggtt entries)
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-10-08 17:41:22 +08:00
Zhipeng Gong
7759ca3aac drm/i915/gvt: clear ggtt entries when destroy vgpu
When one vgpu is destroyed, its ggtt entries are not cleared.
This patch clears ggtt entries to avoid information leak.

v2: add 'Fixes' tag (Zhenyu)

Fixes: 2707e44466 ("drm/i915/gvt: vGPU graphics memory virtualization")
Signed-off-by: Zhipeng Gong <zhipeng.gong@intel.com>
Reviewed-by: Hang Yuan <hang.yuan@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-09-18 10:39:44 +08:00
Weinan Li
a1ac5f0943 drm/i915/gvt: request srcu_read_lock before checking if one gfn is valid
Fix the suspicious RCU usage issue in intel_vgpu_emulate_mmio_write.
Here need to request the srcu read lock of kvm->srcu before doing
gfn_to_memslot(). The detailed log is as below:
[  218.710688] =============================
[  218.710690] WARNING: suspicious RCU usage
[  218.710693] 4.14.15-dd+ #314 Tainted: G     U
[  218.710695] -----------------------------
[  218.710697] ./include/linux/kvm_host.h:575 suspicious rcu_dereference_check() usage!
[  218.710699]
               other info that might help us debug this:

[  218.710702]
               rcu_scheduler_active = 2, debug_locks = 1
[  218.710704] 1 lock held by qemu-system-x86/2144:
[  218.710706]  #0:  (&gvt->lock){+.+.}, at: [<ffffffff816a1eea>] intel_vgpu_emulate_mmio_write+0x5a/0x2d0
[  218.710721]
               stack backtrace:
[  218.710724] CPU: 0 PID: 2144 Comm: qemu-system-x86 Tainted: G     U 4.14.15-dd+ #314
[  218.710727] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.1.1 10/07/2015
[  218.710729] Call Trace:
[  218.710734]  dump_stack+0x7c/0xb3
[  218.710739]  gfn_to_memslot+0x15f/0x170
[  218.710743]  kvm_is_visible_gfn+0xa/0x30
[  218.710746]  intel_vgpu_emulate_gtt_mmio_write+0x267/0x3c0
[  218.710751]  ? __mutex_unlock_slowpath+0x3b/0x260
[  218.710754]  intel_vgpu_emulate_mmio_write+0x182/0x2d0
[  218.710759]  intel_vgpu_rw+0xba/0x170 [kvmgt]
[  218.710763]  intel_vgpu_write+0x14d/0x1a0 [kvmgt]
[  218.710767]  __vfs_write+0x23/0x130
[  218.710770]  vfs_write+0xb0/0x1b0
[  218.710774]  SyS_pwrite64+0x73/0x90
[  218.710777]  entry_SYSCALL_64_fastpath+0x25/0x9c
[  218.710780] RIP: 0033:0x7f33e8a91da3
[  218.710783] RSP: 002b:00007f33dddc8700 EFLAGS: 00000293

v2: add 'Fixes' tag, refine log format.(Zhenyu)
Fixes: cc753fbe1a ("drm/i915/gvt: validate gfn before set shadow page")
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Weinan Li <weinan.z.li@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-09-18 10:37:55 +08:00
Colin Xu
d817de3bc1 drm/i915/gvt: Add GEN9_CLKGATE_DIS_4 to default BXT mmio handler
Host prints lots of untracked MMIO at 0x4653c when creating linux guest.
"gvt: vgpu 2: untracked MMIO 0004653c len 4"

GEN9_CLKGATE_DIS_4 (0x4653c) is accessed by i915 for gmbus clockgating.
However vgpu doesn't support any clockgating powergating operations
on related mmio access trap so need add it to default handler.
GEN9_CLKGATE_DIS_4 is accessed in bxt_gmbus_clock_gating() which only
applies to GEN9_LP so doens't show the warning on other platforms.

The solution is to add it to default handler init_bxt_mmio_info().

Reviewed-by: He, Min <min.he@intel.com>
Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-09-18 10:37:44 +08:00
Colin Xu
db7c8f1e5f drm/i915/gvt: Init PHY related registers for BXT
Recent patch fixed the call trace
"ERROR Port B enabled but PHY powered down? (PHY_CTL 00000000)".
but introduced another similar call trace shown as:
"ERROR Port C enabled but PHY powered down? (PHY_CTL 00000200)".
The call trace will appear when host and guest enabled different ports,
i.e. host using PORT C or neither PORT is enabled, while guest is always
using PORT B as simulated by gvt. The issue is actually covered previously
before the commit and reverals now when the commit do the right thing.

On BXT, some PHY registers are initialized by vbios, before i915 loaded.
Later i915 will re-program some, or skip some based on the implementation.
The initialized mmio for guest i915 is done by gvt, based on the snapshot
taken from host. If host and guest have different PORT enabled, some
DPIO PHY mmios that gvt initialized for guest i915 will not match the
simualted monitor for guest, which leads to guest i915 print the calltrace
when it's trying to enable PHY and PORT.

The solution is to init these DPIO PHY registers to default value, then
guest i915 will program them to reasonable value based on the default
powerwell table and enabled PORT. Together with the old patch, all similar
call trace in guest kernel on BXT can be resolved.

v2: Move PHY register init to intel_vgpu_reset_mmio (Min)
v3: Do not delete empty line in issue fix patch. (zhenyu)

Fixes: c8ab5ac30c ("drm/i915/gvt: Make correct handling to vreg
BXT_PHY_CTL_FAMILY")
Reviewed-by: He, Min <min.he@intel.com>
Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-09-18 10:37:29 +08:00
Weinan Li
792fab2c0d drm/i915/gvt: Fix the incorrect length of child_device_config issue
GVT-g emualte the opregion for guest with bdb version as '186' which
child_device_config length should be '33'.

v2: split into 2 patch. 1st for issue fix, 2nd for code clean up.(Zhenyu)
v3: add fixes tag.(Zhenyu)

Fixes: 4023f301d2 ("drm/i915/gvt: opregion virtualization for win")
CC: Xiaolin Zhang <xiaolin.zhang@intel.com>
Reviewed-by: Xiaolin Zhang <xiaolin.zhang@intel.com>
Signed-off-by: Weinan Li <weinan.z.li@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-09-06 11:17:38 +08:00
Zhenyu Wang
0a1b60d76b drm/i915/gvt: Fix life cycle reference on KVM mm
Handle guest mm access life cycle properly with mmget()/mmput().
As noted by Linus, use_mm() depends on valid live page table but
KVM's mmgrab() doesn't guarantee that. As vGPU usage depends on
guest VM life cycle, need to make sure to use mmget()/mmput() to
guarantee VM address access.

v3: fix build

v2: v1 caused a weird dependence issue which failed for vfio
device release, which result invalid mdev vgpu and kvm state
without proper release taken. This trys to put right reference
around VM address space access instead.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-09-04 14:55:23 +08:00
Zhenyu Wang
54ff01fd0d drm/i915/gvt: Give new born vGPU higher scheduling chance
This trys to give new born vGPU with higher scheduling chance
not only with adding to sched list head and also have higher
priority for workload sched for 2 seconds after starting to
schedule it. In order for fast GPU execution during VM boot,
and ensure guest driver setup with required state given in time.

This fixes recent failure seen on one VM with multiple linux VMs
running on kernel with commit 2621cefaa42b3("drm/i915: Provide a timeout to i915_gem_wait_for_idle() on setup"),
which had shorter setup timeout that caused context state init failed.

v2: change to 2s for higher scheduling period

Cc: Yuan Hang <hang.yuan@intel.com>
Reviewed-by: Hang Yuan <hang.yuan@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-09-03 14:28:23 +08:00
Zhenyu Wang
b244ffa15c drm/i915/gvt: Fix drm_format_mod value for vGPU plane
Physical plane's tiling mode value is given directly as
drm_format_mod for plane query, which is not correct fourcc
code. Fix it by using correct intel tiling fourcc mod definition.

Current qemu seems also doesn't correctly utilize drm_format_mod
for plane object setting. Anyway this is required to fix the usage.

v3: use DRM_FORMAT_MOD_LINEAR, fix comment

v2: Fix missed old 'tiled' use for stride calculation

Fixes: e546e281d3 ("drm/i915/gvt: Dmabuf support for GVT-g")
Cc: Tina Zhang <tina.zhang@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Colin Xu <Colin.Xu@intel.com>
Reviewed-by: Colin Xu <Colin.Xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-30 12:56:33 +08:00
Hang Yuan
b2b599fb54 drm/i915/gvt: move intel_runtime_pm_get out of spin_lock in stop_schedule
pm_runtime_get_sync in intel_runtime_pm_get might sleep if i915
device is not active. When stop vgpu schedule, the device may be
inactive. So need to move runtime_pm_get out of spin_lock/unlock.

Fixes: b24881e0b0b6("drm/i915/gvt: Add runtime_pm_get/put into gvt_switch_mmio
Cc: <stable@vger.kernel.org>
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-30 12:54:32 +08:00
Colin Xu
b9b824a558 drm/i915/gvt: Handle GEN9_WM_CHICKEN3 with F_CMD_ACCESS.
Recent patch introduce strict check on scanning cmd:
Commit 8d458ea0ec ("drm/i915/gvt: return error on cmd access")

Before 8d458ea0ec, if cmd_reg_handler() checks that a cmd access a mmio
that not marked as F_CMD_ACCESS, it simply returns 0 and log an error.
Now it will return -EBADRQC which will cause the workload fail to submit.

On BXT, i915 applies WaClearHIZ_WM_CHICKEN3 which will program
GEN9_WM_CHICKEN3 by LRI when init wa ctx. If it has no F_CMD_ACCESS flag,
vgpu will fail to start. Also add F_MODE_MASK since it's mode mask reg.

v2: Refresh commit message to elaborate issue symptom in detail.
v3: Make SKL_PLUS share same handling since GEN9_WM_CHICKEN3 should be
    F_CMD_ACCESS from HW aspect. (yan, zhenyu)

Signed-off-by: Colin Xu <colin.xu@intel.com>
Acked-by: Zhao Yan <yan.y.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-30 12:54:09 +08:00
Colin Xu
c8ab5ac30c drm/i915/gvt: Make correct handling to vreg BXT_PHY_CTL_FAMILY
Guest kernel will write to BXT_PHY_CTL_FAMILY to reset DDI PHY
and pull BXT_PHY_CTL to check PHY status. Previous handling will
set/reset BXT_PHY_CTL of all PHYs at same time on receiving vreg
write to some BXT_PHY_CTL_FAMILY. If some BXT_PHY_CTL is already
enabled, following reset to another BXT_PHY_CTL_FAMILY will clear
the enabled BXT_PHY_CTL, which result in guest kernel print:

-----------------------------------
[drm:intel_ddi_get_hw_state [i915]]
*ERROR* Port B enabled but PHY powered down? (PHY_CTL 00000000)
-----------------------------------

The correct handling should operate BXT_PHY_CTL_FAMILY and
BXT_PHY_CTL on the same DDI.

v2: Use correct reg define. The naming looks confusing, however
    current i915_reg.h bind DPIO_PHY0 to _PHY_CTL_FAMILY_DDI and
    bind DPIO_PHY1 to _PHY_CTL_FAMILY_EDP, pairing to
    _BXT_PHY_CTL_DDI_A and _BXT_PHY_CTL_DDI_B respectively.
v3: v2 incorrectly map _PHY_CTL_FAMILY_EDP to _BXT_PHY_CTL_DDI_A.
    BXT_PHY_CTL() looks up DDI using PORTx but not PHYx. Based on
    DPIO_PHY to DDI mapping, make correct vreg handle to BXT_PHY_CTL
    on receiving vreg write to BXT_PHY_CTL_FAMILY. (He, Min)

Current mapping according to bxt_power_wells:
dpio-common-a:
    >>> DPIO_PHY1
    >>> BXT_DPIO_CMN_A_POWER_DOMAINS
    >>> POWER_DOMAIN_PORT_DDI_A_LANES
    >>> PORT_A

dpio-common-bc:
    >>> DPIO_PHY0
    >>> BXT_DPIO_CMN_BC_POWER_DOMAINS
    >>> POWER_DOMAIN_PORT_DDI_B_LANES | POWER_DOMAIN_PORT_DDI_C_LANES
    >>> PORT_B or PORT_C

Signed-off-by: Colin Xu <colin.xu@intel.com>
Reviewed-by: He, Min <min.he@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-30 12:54:08 +08:00
Xiaolin Zhang
9174c1d619 drm/i915/gvt: emulate gen9 dbuf ctl register access
there is below call track at boot time when booting guest
with kabylake vgpu with specifal configuration and this try to fix it.

[drm:gen9_dbuf_enable [i915]] *ERROR* DBuf power enable timeout
------------[ cut here ]------------
WARNING: gen9_dc_off_power_well_enable+0x224/0x230 [i915]
Unexpected DBuf power power state (0x8000000a)
Hardware name: Red Hat KVM, BIOS 1.11.0-2.el7 04/01/2014
Call Trace:
 [<ffffffff99d24408>] dump_stack+0x19/0x1b
 [<ffffffff996926d8>] __warn+0xd8/0x100
 [<ffffffff9969275f>] warn_slowpath_fmt+0x5f/0x80
 [<ffffffffc07bbae4>] gen9_dc_off_power_well_enable+0x224/0x230 [i915]
 [<ffffffffc07ba9d2>] intel_power_well_enable+0x42/0x50 [i915]
 [<ffffffffc07baa6a>] __intel_display_power_get_domain+0x8a/0xb0 [i915]
 [<ffffffffc07bdb93>] intel_display_power_get+0x33/0x50 [i915]
 [<ffffffffc07bdf95>] intel_display_set_init_power+0x45/0x50 [i915]
 [<ffffffffc07be003>] intel_power_domains_init_hw+0x63/0x8a0 [i915]
 [<ffffffffc07995c3>] i915_driver_load+0xae3/0x1760 [i915]
 [<ffffffff99bd6580>] ? nvmem_register+0x500/0x500
 [<ffffffffc07a476c>] i915_pci_probe+0x2c/0x50 [i915]
 [<ffffffff9999cfea>] local_pci_probe+0x4a/0xb0
 [<ffffffff9999e729>] pci_device_probe+0x109/0x160
 [<ffffffff99a79aa5>] driver_probe_device+0xc5/0x3e0
 [<ffffffff99a79ea3>] __driver_attach+0x93/0xa0
 [<ffffffff99a79e10>] ? __device_attach+0x50/0x50
 [<ffffffff99a77645>] bus_for_each_dev+0x75/0xc0
 [<ffffffff99a7941e>] driver_attach+0x1e/0x20
 [<ffffffff99a78ec0>] bus_add_driver+0x200/0x2d0
 [<ffffffff99a7a534>] driver_register+0x64/0xf0
 [<ffffffff9999df65>] __pci_register_driver+0xa5/0xc0
 [<ffffffffc0929000>] ? 0xffffffffc0928fff
 [<ffffffffc0929059>] i915_init+0x59/0x5c [i915]
 [<ffffffff9960210a>] do_one_initcall+0xba/0x240
 [<ffffffff9971108c>] load_module+0x272c/0x2bc0
 [<ffffffff9997b990>] ? ddebug_proc_write+0xf0/0xf0
 [<ffffffff997115e5>] SyS_init_module+0xc5/0x110
 [<ffffffff99d36795>] system_call_fastpath+0x1c/0x21

Signed-off-by: Xiaolin Zhang <xiaolin.zhang@intel.com>

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-30 12:54:08 +08:00
Chris Wilson
80ab316901 drm/i915/audio: Hook up component bindings even if displays are disabled
If the display has been disabled by modparam, we still want to connect
together the HW bits and bobs with the associated drivers so that we can
continue to manage their runtime power gating.

Fixes: 108109444f ("drm/i915: Check num_pipes before initializing audio component")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Elaine Wang <elaine.wang@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180817100241.4628-1-chris@chris-wilson.co.uk
(cherry picked from commit 35a5fd9ebf)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-29 14:11:53 -07:00
Fredrik Schön
299c2a904b drm/i915: Increase LSPCON timeout
100 ms is not enough time for the LSPCON adapter on Intel NUC devices to
settle. This causes dropped display modes at boot or screen reconfiguration.
Empirical testing can reproduce the error up to a timeout of 190 ms. Basic
boot and stress testing at 200 ms has not (yet) failed.

Increase timeout to 400 ms to get some margin of error.

Changes from v1:
The initial suggestion of 1000 ms was lowered due to concerns about delaying
valid timeout cases.
Update patch metadata.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107503
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1570392
Fixes: 357c0ae919 ("drm/i915/lspcon: Wait for expected LSPCON mode to settle")
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: <stable@vger.kernel.org> # v4.11+
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Fredrik Schön <fredrik.schon@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180817200728.8154-1-fredrik.schon@gmail.com
(cherry picked from commit 59f1c8ab30)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-29 14:11:53 -07:00
Chris Wilson
f013027e26 drm/i915: Stop holding a ref to the ppgtt from each vma
The context owns both the ppgtt and the vma within it, and our activity
tracking on the context ensures that we do not release active ppgtt. As
the context fulfils our obligations for active memory tracking, we can
relinquish the reference from the vma.

This fixes a silly transient refleak from closed vma being kept alive
until the entire system was idle, keeping all vm alive as well.

Reported-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Testcase: igt/gem_ctx_create/files
Fixes: 3365e2268b ("drm/i915: Lazily unbind vma on close")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Tested-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180816073448.19396-1-chris@chris-wilson.co.uk
(cherry picked from commit a4417b7b41)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-29 14:11:53 -07:00
Rodrigo Vivi
1b1b116274 drm/i915: Free write_buf that we allocated with kzalloc.
We use kzalloc to allocate the write_buf that we use for
i2c transfer on hdcp write. But it seems that we are forgetting
to free the memory that is not needed after i2c transfer is
completed.

Reported-by: Brian J Wood <brian.j.wood@intel.com>
Fixes: 2320175feb ("drm/i915: Implement HDCP for HDMI")
Cc: Ramalingam C <ramalingam.c@intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: <stable@vger.kernel.org> # v4.17+
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180823205136.31310-1-rodrigo.vivi@intel.com
(cherry picked from commit 62d3a8deaa)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-28 12:50:43 -07:00
Ville Syrjälä
5b2695fd4b drm/i915: Fix glk/cnl display w/a #1175
The workaround was supposed to look at the plane destination
coordinates. Currently it's looking at some mixture of src
and dst coordinates that doesn't make sense. Fix it up.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180719182214.4323-2-ville.syrjala@linux.intel.com
Fixes: 394676f05b (drm/i915: Add WA for planes ending close to left screen edge)
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit b1f1c2c11f)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-28 12:50:37 -07:00
Nick Desaulniers
815f0ddb34 include/linux/compiler*.h: make compiler-*.h mutually exclusive
Commit cafa0010cd ("Raise the minimum required gcc version to 4.6")
recently exposed a brittle part of the build for supporting non-gcc
compilers.

Both Clang and ICC define __GNUC__, __GNUC_MINOR__, and
__GNUC_PATCHLEVEL__ for quick compatibility with code bases that haven't
added compiler specific checks for __clang__ or __INTEL_COMPILER.

This is brittle, as they happened to get compatibility by posing as a
certain version of GCC.  This broke when upgrading the minimal version
of GCC required to build the kernel, to a version above what ICC and
Clang claim to be.

Rather than always including compiler-gcc.h then undefining or
redefining macros in compiler-intel.h or compiler-clang.h, let's
separate out the compiler specific macro definitions into mutually
exclusive headers, do more proper compiler detection, and keep shared
definitions in compiler_types.h.

Fixes: cafa0010cd ("Raise the minimum required gcc version to 4.6")
Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Suggested-by: Eli Friedman <efriedma@codeaurora.org>
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-22 17:31:34 -07:00
Michal Hocko
93065ac753 mm, oom: distinguish blockable mode for mmu notifiers
There are several blockable mmu notifiers which might sleep in
mmu_notifier_invalidate_range_start and that is a problem for the
oom_reaper because it needs to guarantee a forward progress so it cannot
depend on any sleepable locks.

Currently we simply back off and mark an oom victim with blockable mmu
notifiers as done after a short sleep.  That can result in selecting a new
oom victim prematurely because the previous one still hasn't torn its
memory down yet.

We can do much better though.  Even if mmu notifiers use sleepable locks
there is no reason to automatically assume those locks are held.  Moreover
majority of notifiers only care about a portion of the address space and
there is absolutely zero reason to fail when we are unmapping an unrelated
range.  Many notifiers do really block and wait for HW which is harder to
handle and we have to bail out though.

This patch handles the low hanging fruit.
__mmu_notifier_invalidate_range_start gets a blockable flag and callbacks
are not allowed to sleep if the flag is set to false.  This is achieved by
using trylock instead of the sleepable lock for most callbacks and
continue as long as we do not block down the call chain.

I think we can improve that even further because there is a common pattern
to do a range lookup first and then do something about that.  The first
part can be done without a sleeping lock in most cases AFAICS.

The oom_reaper end then simply retries if there is at least one notifier
which couldn't make any progress in !blockable mode.  A retry loop is
already implemented to wait for the mmap_sem and this is basically the
same thing.

The simplest way for driver developers to test this code path is to wrap
userspace code which uses these notifiers into a memcg and set the hard
limit to hit the oom.  This can be done e.g.  after the test faults in all
the mmu notifier managed memory and set the hard limit to something really
small.  Then we are looking for a proper process tear down.

[akpm@linux-foundation.org: coding style fixes]
[akpm@linux-foundation.org: minor code simplification]
Link: http://lkml.kernel.org/r/20180716115058.5559-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Christian König <christian.koenig@amd.com> # AMD notifiers
Acked-by: Leon Romanovsky <leonro@mellanox.com> # mlx and umem_odp
Reported-by: David Rientjes <rientjes@google.com>
Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
Cc: Dennis Dalessandro <dennis.dalessandro@intel.com>
Cc: Sudeep Dutt <sudeep.dutt@intel.com>
Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-22 10:52:44 -07:00
Linus Torvalds
532c2b926d - New Drivers
- Add Cirrus Logic Madera Codec (CS47L35, CS47L85 and CS47L90/91) driver
    - Add ChromeOS EC CEC driver
    - Add ROHM BD71837 PMIC driver
 
  - New Device Support
    - Add support for Dialog Semi DA9063L PMIC variant to DA9063
    - Add support for Intel Ice Lake to Intel-PLSS-PCI
    - Add support for X-Powers AXP806 to AXP20x
 
  - New Functionality
    - Add support for USB Charging to the ChromeOS Embedded Controller
    - Add support for HDMI CEC to the ChromeOS Embedded Controller
    - Add support for HDMI CEC to Intel HDMI
    - Add support for accessory detection to Madera devices
    - Allow individual pins to be configured via DT' wlf,csnaddr-pd
    - Provide legacy platform specific EEPROM/Watchdog commands; rave-sp
 
  - Fix-ups
    - Trivial renaming/spelling fixes; cros_ec, da9063-*
    - Convert to Managed Resources (devm_*); da9063-*, ti_am335x_tscadc
    - Transition to helper macros/functions; da9063-*
    - Constify; kempld-core
    - Improve error path/messages; wm8994-core
    - Disable IRQs locally instead of relying on USB subsystem; dln2
    - Remove unused code; rave-sp
    - New exports; sec-core
 
  - Bug Fixes
    - Fix possible false I2C transaction error; arizona-core
    - Fix declared memory area size; hi655x-pmic
    - Fix checksum type; rave-sp
    - Fix incorrect default serial port configuration: rave-sp
    - Fix incorrect coherent DMA mask for sub-devices; sm501
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Merge tag 'mfd-next-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers:
   - Add Cirrus Logic Madera Codec (CS47L35, CS47L85 and CS47L90/91) driver
   - Add ChromeOS EC CEC driver
   - Add ROHM BD71837 PMIC driver

  New Device Support:
   - Add support for Dialog Semi DA9063L PMIC variant to DA9063
   - Add support for Intel Ice Lake to Intel-PLSS-PCI
   - Add support for X-Powers AXP806 to AXP20x

  New Functionality:
   - Add support for USB Charging to the ChromeOS Embedded Controller
   - Add support for HDMI CEC to the ChromeOS Embedded Controller
   - Add support for HDMI CEC to Intel HDMI
   - Add support for accessory detection to Madera devices
   - Allow individual pins to be configured via DT' wlf,csnaddr-pd
   - Provide legacy platform specific EEPROM/Watchdog commands; rave-sp

  Fix-upsL
   - Trivial renaming/spelling fixes; cros_ec, da9063-*
   - Convert to Managed Resources (devm_*); da9063-*, ti_am335x_tscadc
   - Transition to helper macros/functions; da9063-*
   - Constify; kempld-core
   - Improve error path/messages; wm8994-core
   - Disable IRQs locally instead of relying on USB subsystem; dln2
   - Remove unused code; rave-sp
   - New exports; sec-core

  Bug Fixes:
   - Fix possible false I2C transaction error; arizona-core
   - Fix declared memory area size; hi655x-pmic
   - Fix checksum type; rave-sp
   - Fix incorrect default serial port configuration: rave-sp
   - Fix incorrect coherent DMA mask for sub-devices; sm501"

* tag 'mfd-next-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (60 commits)
  mfd: madera: Add register definitions for accessory detect
  mfd: sm501: Set coherent_dma_mask when creating subdevices
  mfd: bd71837: Devicetree bindings for ROHM BD71837 PMIC
  mfd: bd71837: Core driver for ROHM BD71837 PMIC
  media: platform: cros-ec-cec: Fix dependency on MFD_CROS_EC
  mfd: sec-core: Export OF module alias table
  mfd: as3722: Disable auto-power-on when AC OK
  mfd: axp20x: Support AXP806 in I2C mode
  mfd: axp20x: Add self-working mode support for AXP806
  dt-bindings: mfd: axp20x: Add "self-working" mode for AXP806
  mfd: wm8994: Allow to configure CS/ADDR Pulldown from dts
  mfd: wm8994: Allow to configure Speaker Mode Pullup from dts
  mfd: rave-sp: Emulate CMD_GET_STATUS on device that don't support it
  mfd: rave-sp: Add legacy watchdog ping command translation
  mfd: rave-sp: Add legacy EEPROM access command translation
  mfd: rave-sp: Initialize flow control and parity of the port
  mfd: rave-sp: Fix incorrectly specified checksum type
  mfd: rave-sp: Remove unused defines
  mfd: hi655x: Fix regmap area declared size for hi655x
  mfd: ti_am335x_tscadc: Fix struct clk memory leak
  ...
2018-08-20 15:38:44 -07:00
Linus Torvalds
f80a71b0c4 msm, i915 and amdgpu fixes
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Merge tag 'drm-next-2018-08-17' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "First round of fixes for -rc1. I'll follow this up with the msm new hw
  support pull request.

  This just has three sets of fixes, some for msm before the new hw, a
  bunch of AMD fixes (includiing some required firmware changes for new
  hw), and a set of i915 (+gvt) fixes"

* tag 'drm-next-2018-08-17' of git://anongit.freedesktop.org/drm/drm: (30 commits)
  drm/amdgpu: Use kvmalloc for allocating UVD/VCE/VCN BO backup memory
  drm/i915: set DP Main Stream Attribute for color range on DDI platforms
  drm/i915/selftests: Hold rpm for unparking
  drm/i915: Restore user forcewake domains across suspend
  drm/i915: Unmask user interrupts writes into HWSP on snb/ivb/vlv/hsw
  drm/i915/gvt: fix memory leak in intel_vgpu_ioctl()
  drm/i915/gvt: Off by one in intel_vgpu_write_fence()
  drm/i915/kvmgt: Fix potential Spectre v1
  drm/i915/gvt: return error on cmd access
  drm/i915/gvt: initialize dmabuf mutex in vgpu_create
  drm/i915/gvt: fix cleanup sequence in intel_gvt_clean_device
  drm/amd/display: Guard against null crtc in CRC IRQ
  drm/amd/display: Pass connector id when executing VBIOS CT
  drm/amd/display: Check if clock source in use before disabling
  drm/amd/display: Allow clock sharing b/w HDMI and DVI
  drm/amd/display: Fix warning observed in mode change on Vega
  drm/amd/display: fix single link DVI has no display
  drm/amdgpu/vce: VCE entity initialization relies on ring initializtion
  drm/amdgpu/uvd: UVD entity initialization relys on ring initialization
  drm/amdgpu:add VCN booting with firmware loaded by PSP
  ...
2018-08-17 12:10:22 -07:00
Linus Torvalds
54dbe75bbf drm pull for 4.19-rc1
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Merge tag 'drm-next-2018-08-15' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "This is the main drm pull request for 4.19.

  Rob has some new hardware support for new qualcomm hw that I'll send
  along separately. This has the display part of it, the remaining pull
  is for the acceleration engine.

  This also contains a wound-wait/wait-die mutex rework, Peter has acked
  it for merging via my tree.

  Otherwise mostly the usual level of activity. Summary:

  core:
   - Wound-wait/wait-die mutex rework
   - Add writeback connector type
   - Add "content type" property for HDMI
   - Move GEM bo to drm_framebuffer
   - Initial gpu scheduler documentation
   - GPU scheduler fixes for dying processes
   - Console deferred fbcon takeover support
   - Displayport support for CEC tunneling over AUX

  panel:
   - otm8009a panel driver fixes
   - Innolux TV123WAM and G070Y2-L01 panel driver
   - Ilitek ILI9881c panel driver
   - Rocktech RK070ER9427 LCD
   - EDT ETM0700G0EDH6 and EDT ETM0700G0BDH6
   - DLC DLC0700YZG-1
   - BOE HV070WSA-100
   - newhaven, nhd-4.3-480272ef-atxl LCD
   - DataImage SCF0700C48GGU18
   - Sharp LQ035Q7DB03
   - p079zca: Refactor to support multiple panels

  tinydrm:
   - ILI9341 display panel

  New driver:
   - vkms - virtual kms driver to testing.

  i915:
   - Icelake:
        Display enablement
        DSI support
        IRQ support
        Powerwell support
   - GPU reset fixes and improvements
   - Full ppgtt support refactoring
   - PSR fixes and improvements
   - Execlist improvments
   - GuC related fixes

  amdgpu:
   - Initial amdgpu documentation
   - JPEG engine support on VCN
   - CIK uses powerplay by default
   - Move to using core PCIE functionality for gens/lanes
   - DC/Powerplay interface rework
   - Stutter mode support for RV
   - Vega12 Powerplay updates
   - GFXOFF fixes
   - GPUVM fault debugging
   - Vega12 GFXOFF
   - DC improvements
   - DC i2c/aux changes
   - UVD 7.2 fixes
   - Powerplay fixes for Polaris12, CZ/ST
   - command submission bo_list fixes

  amdkfd:
   - Raven support
   - Power management fixes

  udl:
   - Cleanups and fixes

  nouveau:
   - misc fixes and cleanups.

  msm:
   - DPU1 support display controller in sdm845
   - GPU coredump support.

  vmwgfx:
   - Atomic modesetting validation fixes
   - Support for multisample surfaces

  armada:
   - Atomic modesetting support completed.

  exynos:
   - IPPv2 fixes
   - Move g2d to component framework
   - Suspend/resume support cleanups
   - Driver cleanups

  imx:
   - CSI configuration improvements
   - Driver cleanups
   - Use atomic suspend/resume helpers
   - ipu-v3 V4L2 XRGB32/XBGR32 support

  pl111:
   - Add Nomadik LCDC variant

  v3d:
   - GPU scheduler jobs management

  sun4i:
   - R40 display engine support
   - TCON TOP driver

  mediatek:
   - MT2712 SoC support

  rockchip:
   - vop fixes

  omapdrm:
   - Workaround for DRA7 errata i932
   - Fix mm_list locking

  mali-dp:
   - Writeback implementation
        PM improvements
   - Internal error reporting debugfs

  tilcdc:
   - Single fix for deferred probing

  hdlcd:
   - Teardown fixes

  tda998x:
   - Converted to a bridge driver.

  etnaviv:
   - Misc fixes"

* tag 'drm-next-2018-08-15' of git://anongit.freedesktop.org/drm/drm: (1506 commits)
  drm/amdgpu/sriov: give 8s for recover vram under RUNTIME
  drm/scheduler: fix param documentation
  drm/i2c: tda998x: correct PLL divider calculation
  drm/i2c: tda998x: get rid of private fill_modes function
  drm/i2c: tda998x: move mode_valid() to bridge
  drm/i2c: tda998x: register bridge outside of component helper
  drm/i2c: tda998x: cleanup from previous changes
  drm/i2c: tda998x: allocate tda998x_priv inside tda998x_create()
  drm/i2c: tda998x: convert to bridge driver
  drm/scheduler: fix timeout worker setup for out of order job completions
  drm/amd/display: display connected to dp-1 does not light up
  drm/amd/display: update clk for various HDMI color depths
  drm/amd/display: program display clock on cache match
  drm/amd/display: Add NULL check for enabling dp ss
  drm/amd/display: add vbios table check for enabling dp ss
  drm/amd/display: Don't share clk source between DP and HDMI
  drm/amd/display: Fix DP HBR2 Eye Diagram Pattern on Carrizo
  drm/amd/display: Use calculated disp_clk_khz value for dce110
  drm/amd/display: Implement custom degamma lut on dcn
  drm/amd/display: Destroy aux_engines only once
  ...
2018-08-15 17:39:07 -07:00
Rodrigo Vivi
4795ac626a Merge tag 'gvt-next-fixes-2018-08-14' of https://github.com/intel/gvt-linux into drm-intel-next-fixes
gvt-next-fixes-2018-08-14

- Fix an error code in gvt_dma_map_page() (Dan)
- Fix off by one error in intel_vgpu_write_fence() (Dan)
- Fix potential Spectre v1 (Gustavo)
- Fix workload free in vgpu release (Henry)
- Fix cleanup sequence in intel_gvt_clean_device (Henry)
- dmabuf mutex init place fix (Henry)
- possible memory leak in intel_vgpu_ioctl() err path (Yi)
- return error on cmd access check failure (Yan)

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180814073140.GJ22630@zhen-hp.sh.intel.com
2018-08-15 13:42:32 -07:00
Jani Nikula
6209c285e7 drm/i915: set DP Main Stream Attribute for color range on DDI platforms
Since Haswell we have no color range indication either in the pipe or
port registers for DP. Instead, there's a separate register for setting
the DP Main Stream Attributes (MSA) directly. The MSA register
definition makes no references to colorimetry, just a vague reference to
the DP spec. The connection to the color range was lost.

Apparently we've failed to set the proper MSA bit for limited, or CEA,
range ever since the first DDI platforms. We've started setting other
MSA parameters since commit dae847991a ("drm/i915: add
intel_ddi_set_pipe_settings").

Without the crucial bit of information, the DP sink has no way of
knowing the source is actually transmitting limited range RGB, leading
to "washed out" colors. With the colorimetry information, compliant
sinks should be able to handle the limited range properly. Native
(i.e. non-LSPCON) HDMI was not affected because we do pass the color
range via AVI infoframes.

Though not the root cause, the problem was made worse for DDI platforms
with commit 55bc60db59 ("drm/i915: Add "Automatic" mode for the
"Broadcast RGB" property"), which selects limited range RGB
automatically based on the mode, as per the DP, HDMI and CEA specs.

After all these years, the fix boils down to flipping one bit.

[Per testing reports, this fixes DP sinks, but not the LSPCON. My
 educated guess is that the LSPCON fails to turn the CEA range MSA into
 AVI infoframes for HDMI.]

Reported-by: Michał Kopeć <mkopec12@gmail.com>
Reported-by: N. W. <nw9165-3201@yahoo.com>
Reported-by: Nicholas Stommel <nicholas.stommel@gmail.com>
Reported-by: Tom Yan <tom.ty89@gmail.com>
Tested-by: Nicholas Stommel <nicholas.stommel@gmail.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=100023
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107476
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=94921
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.9+
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180814060001.18224-1-jani.nikula@intel.com
(cherry picked from commit dc5977da99)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-15 13:41:10 -07:00
Chris Wilson
3012ea60c5 drm/i915/selftests: Hold rpm for unparking
The call to i915_gem_unpark() checks that we hold a rpm wakeref before
taking a long term wakeref for i915->gt.awake. We should therefore make
sure we do hold the wakeref when directly calling unpark to disable
the retire worker.

Fixes: 932cac10c8 ("drm/i915/selftests: Prevent background reaping of active objects")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180809063449.4474-1-chris@chris-wilson.co.uk
(cherry picked from commit 7b5ee80a5d)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-15 13:41:08 -07:00
Chris Wilson
3af71f649d drm/i915: Restore user forcewake domains across suspend
On suspend, we cancel the automatic forcewake and clear all other sources
of forcewake so the machine can sleep before we do suspend. However, we
expose the forcewake to userspace (only via debugfs, but nevertheless we
do) and want to restore that upon resume or else our accounting will be
off and we may not acquire the forcewake before we use it. So record
which domains we cleared on suspend and reacquire them early on resume.

v2: Hold the spinlock to appease our sanitychecks
v3: s/fw_domains_user/fw_domains_saved/ to convey intent more clearly

Reported-by: Imre Deak <imre.deak@linux.intel.com>
Fixes: b847305080 ("drm/i915: Fix forcewake active domain tracking")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Imre Deak <imre.deak@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180808210842.3555-1-chris@chris-wilson.co.uk
(cherry picked from commit d60996ab43)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-15 13:41:05 -07:00
Chris Wilson
341a15bb91 drm/i915: Unmask user interrupts writes into HWSP on snb/ivb/vlv/hsw
An oddity occurs on Sandybridge, Ivybridge and Haswell (and presumably
Valleyview) in that for the period following the GPU restart after a
reset, there are no GT interrupts received. From Ville's notes, bit 0 in
the HWSTAM corresponds to the render interrupt, and if we unmask it we
do see immediate resumption of GT interrupt delivery (via the master irq
handler) after the reset.

v2: Limit the w/a to the render interrupt from rcs

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107500
Fixes: c549808946 ("drm/i915: Mask everything in ring HWSTAM on gen6+ in ringbuffer mode")
References: d420a50c21 ("drm/i915: Clean up the HWSTAM mess")
Testcase: igt/gem_eio/reset-stress
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180808105101.913-2-chris@chris-wilson.co.uk
(cherry picked from commit a4a717010f)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-15 13:41:01 -07:00
Linus Torvalds
747f62305d sound updates for 4.19
It's been busy summer weeks and hence lots of changes, partly for a
 few new drivers and partly for a wide range of fixes.
 Here are highlights:
 
 ALSA Core:
  - Fix rawmidi buffer management, code cleanup / refactoring
  - Fix the SG-buffer page handling with incorrect fallback size
  - Fix the stall at virmidi trigger callback with a large buffer;
    also offloading and code-refactoring along with it
  - Various ALSA sequencer code cleanups
 
 ASoC:
  - Deploy the standard snd_pcm_stop_xrun() helper in several drivers
  - Support for providing name prefixes to generic component nodes
  - Quite a few fixes for DPCM as it gains a bit wider use and more
    robust testing
  - Generalization of the DIO2125 support to a simple amplifier driver
  - Accessory detection support for the audio graph card
  - DT support for PXA AC'97 devices
  - Quirks for a number of new x86 systems
  - Support for AM Logic Meson, Everest ES7154, Intel systems with
    RT5682, Qualcomm QDSP6 and WCD9335, Realtek RT5682 and TI TAS5707
 
 HD-audio:
  - Code refactoring in HD-audio ext codec codes to drop own classes;
    preliminary works for the upcoming legacy codec support
  - Generalized DRM audio component for the upcoming radeon / amdgpu
    support
  - Unification of mic mute-LED and GPIO support for various codecs
  - Further improvement of CA0132 codec support including Recon3D
  - Proper vga_switcheroo handling for AMD i-GPU
  - Update of model list in documentation
  - Fixups for another HP Spectre x360, Conexant codecs, power-save
    blacklist update
 
 USB-audio:
  - Fix the invalid sample rate setup with external clock
  - Support of UAC3 selector units and processing units
  - Basic UAC3 power-domain support
  - Support for Encore mDSD and Thesycon-based DSD devices
  - Preparation for future complete callback changes
 
 Firewire:
  - Add support for MOTU Traveler
 
 Misc:
  - The endianess notation fixes in various drivers
  - Add fall-through comment in lots of drivers
  - Various sparse warning fixes, e.g. about PCM format types
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Merge tag 'sound-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "It's been busy summer weeks and hence lots of changes, partly for a
  few new drivers and partly for a wide range of fixes.

  Here are highlights:

  ALSA Core:
   - Fix rawmidi buffer management, code cleanup / refactoring
   - Fix the SG-buffer page handling with incorrect fallback size
   - Fix the stall at virmidi trigger callback with a large buffer; also
     offloading and code-refactoring along with it
   - Various ALSA sequencer code cleanups

  ASoC:
   - Deploy the standard snd_pcm_stop_xrun() helper in several drivers
   - Support for providing name prefixes to generic component nodes
   - Quite a few fixes for DPCM as it gains a bit wider use and more
     robust testing
   - Generalization of the DIO2125 support to a simple amplifier driver
   - Accessory detection support for the audio graph card
   - DT support for PXA AC'97 devices
   - Quirks for a number of new x86 systems
   - Support for AM Logic Meson, Everest ES7154, Intel systems with
     RT5682, Qualcomm QDSP6 and WCD9335, Realtek RT5682 and TI TAS5707

  HD-audio:
   - Code refactoring in HD-audio ext codec codes to drop own classes;
     preliminary works for the upcoming legacy codec support
   - Generalized DRM audio component for the upcoming radeon / amdgpu
     support
   - Unification of mic mute-LED and GPIO support for various codecs
   - Further improvement of CA0132 codec support including Recon3D
   - Proper vga_switcheroo handling for AMD i-GPU
   - Update of model list in documentation
   - Fixups for another HP Spectre x360, Conexant codecs, power-save
     blacklist update

  USB-audio:
   - Fix the invalid sample rate setup with external clock
   - Support of UAC3 selector units and processing units
   - Basic UAC3 power-domain support
   - Support for Encore mDSD and Thesycon-based DSD devices
   - Preparation for future complete callback changes

  Firewire:
   - Add support for MOTU Traveler

  Misc:
   - The endianess notation fixes in various drivers
   - Add fall-through comment in lots of drivers
   - Various sparse warning fixes, e.g. about PCM format types"

* tag 'sound-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (529 commits)
  ASoC: adav80x: mark expected switch fall-through
  ASoC: da7219: Add delays to capture path to remove DC offset noise
  ALSA: usb-audio: Mark expected switch fall-through
  ALSA: mixart: Mark expected switch fall-through
  ALSA: opl3: Mark expected switch fall-through
  ALSA: hda/ca0132 - Add exit commands for Recon3D
  ALSA: hda/ca0132 - Change mixer controls for Recon3D
  ALSA: hda/ca0132 - Add Recon3D input and output select commands
  ALSA: hda/ca0132 - Add DSP setup defaults for Recon3D
  ALSA: hda/ca0132 - Add Recon3D startup functions and setup
  ALSA: hda/ca0132 - Add bool variable to enable/disable pci region2 mmio
  ALSA: hda/ca0132 - Add Recon3D pincfg
  ALSA: hda/ca0132 - Add quirk ID and enum for Recon3D
  ALSA: hda/ca0132 - Add alt_functions unsolicited response
  ALSA: hda/ca0132 - Clean up ca0132_init function.
  ALSA: hda/ca0132 - Create mmio gpio function to make code clearer
  ASoC: wm_adsp: Make DSP name configurable by codec driver
  ASoC: wm_adsp: Declare firmware controls from codec driver
  ASoC: max98373: Added software reset register to readable registers
  ASoC: wm_adsp: Correct DSP pointer for preloader control
  ...
2018-08-14 14:10:30 -07:00
Yi Wang
7590ebb8b4 drm/i915/gvt: fix memory leak in intel_vgpu_ioctl()
The 'sparse' variable may leak when return in function
intel_vgpu_ioctl(), and this patch fix this.

Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reviewed-by: Jiang Biao <jiang.biao2@zte.com.cn>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-14 15:27:12 +08:00
Dan Carpenter
4b25e737cf drm/i915/gvt: Off by one in intel_vgpu_write_fence()
The > should be >= here so that we don't read one element beyond the
end of the array.

Fixes: 28a60dee2c ("drm/i915/gvt: vGPU HW resource management")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-14 15:26:59 +08:00
Gustavo A. R. Silva
de5372da60 drm/i915/kvmgt: Fix potential Spectre v1
info.index can be indirectly controlled by user-space, hence leading
to a potential exploitation of the Spectre variant 1 vulnerability.

This issue was detected with the help of Smatch:

drivers/gpu/drm/i915/gvt/kvmgt.c:1232 intel_vgpu_ioctl() warn:
potential spectre issue 'vgpu->vdev.region' [r]

Fix this by sanitizing info.index before indirectly using it to index
vgpu->vdev.region

Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].

[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2

Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-14 15:26:49 +08:00
Zhao Yan
8d458ea0ec drm/i915/gvt: return error on cmd access
If a register is not cmd accessible, should not just print error
message. Return error here so as not to deliver this cmd.

v2: return -EBADRQC to align with return value elsewhere. (kevin tian)

Signed-off-by: Zhao Yan <yan.y.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-14 15:26:39 +08:00
Hang Yuan
d6c6113bfe drm/i915/gvt: initialize dmabuf mutex in vgpu_create
Currently, the mutex used in GVT dmabuf support is not initialized until
vgpu device is opened. If one vgpu device is opened and then removed, the
mutex will be used in vgpu remove operation without initialization. This
patch initializes the mutex in vgpu create operation to avoid the problem.

Fixes: e546e281d33d("drm/i915/gvt: Dmabuf support for GVT-g")
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-14 15:26:09 +08:00
Hang Yuan
3fd34ac02a drm/i915/gvt: fix cleanup sequence in intel_gvt_clean_device
Create one vGPU and then unbind IGD device from i915 driver. The following
oops will happen. This patch will free vgpu resource first and then gvt
resource to remove these oops.

BUG: unable to handle kernel NULL pointer dereference at       00000000000000a8
  PGD 80000003c9d2c067 P4D 80000003c9d2c067 PUD 3c817c067 P      MD 0
  Oops: 0002 [#1] SMP PTI
  RIP: 0010:down_write+0x1b/0x40
Call Trace:
  debugfs_remove_recursive+0x46/0x1a0
  intel_gvt_debugfs_remove_vgpu+0x15/0x30 [i915]
  intel_gvt_destroy_vgpu+0x2d/0xf0 [i915]
  intel_vgpu_remove+0x2c/0x30 [kvmgt]
  mdev_device_remove_ops+0x23/0x50 [mdev]
  mdev_device_remove+0xdb/0x190 [mdev]
  mdev_device_remove+0x190/0x190 [mdev]
  device_for_each_child+0x47/0x90
  mdev_unregister_device+0xd5/0x120 [mdev]
  intel_gvt_clean_device+0x91/0x120 [i915]
  i915_driver_unload+0x9d/0x120 [i915]
  i915_pci_remove+0x15/0x20 [i915]
  pci_device_remove+0x3b/0xc0
  device_release_driver_internal+0x157/0x230
  unbind_store+0xfc/0x150
  kernfs_fop_write+0x10f/0x180
  __vfs_write+0x36/0x180
  ? common_file_perm+0x41/0x130
  ? _cond_resched+0x16/0x40
  vfs_write+0xb3/0x1a0
  ksys_write+0x52/0xc0
  do_syscall_64+0x55/0x100
  entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: unable to handle kernel NULL pointer dereference at 0      000000000000038
  PGD 8000000405bce067 P4D 8000000405bce067 PUD 405bcd067 PM      D 0
  Oops: 0000 [#1] SMP PTI
  RIP: 0010:hrtimer_active+0x5/0x40
Call Trace:
  hrtimer_try_to_cancel+0x25/0x120
  ? tbs_sched_clean_vgpu+0x1f/0x50 [i915]
  hrtimer_cancel+0x15/0x20
  intel_gvt_destroy_vgpu+0x4c/0xf0 [i915]
  intel_vgpu_remove+0x2c/0x30 [kvmgt]
  mdev_device_remove_ops+0x23/0x50 [mdev]
  mdev_device_remove+0xdb/0x190 [mdev]
  ? mdev_device_remove+0x190/0x190 [mdev]
  device_for_each_child+0x47/0x90
  mdev_unregister_device+0xd5/0x120 [mdev]
  intel_gvt_clean_device+0x89/0x120 [i915]
  i915_driver_unload+0x9d/0x120 [i915]
  i915_pci_remove+0x15/0x20 [i915]
  pci_device_remove+0x3b/0xc0
  device_release_driver_internal+0x157/0x230
  unbind_store+0xfc/0x150
  kernfs_fop_write+0x10f/0x180
  __vfs_write+0x36/0x180
  ? common_file_perm+0x41/0x130
  ? _cond_resched+0x16/0x40
  vfs_write+0xb3/0x1a0
  ksys_write+0x52/0xc0
  do_syscall_64+0x55/0x100
  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: bc7b0be316ae("drm/i915/gvt: Add basic debugfs infrastructure")
Fixes: afe04fbe6c52("drm/i915/gvt: create an idle vGPU")
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-14 15:25:32 +08:00
Hang Yuan
f9090d4c22 drm/i915/gvt: free workload in vgpu release
Some workloads may be prepared in vgpu's queue but not be scheduled
to run yet. If vgpu is released at this time, they will not be freed
in workload complete callback and so need to be freed in vgpu release
operation.

Add new vgpu_release operation in gvt_ops to stop vgpu and release
runtime resources. gvt_ops vgpu_deactivate operation will only stop
vgpu.

v2: add new gvt ops to clean vgpu running status (Xiong Zhang)

Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Reviewed-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-13 12:32:57 +08:00
Mark Brown
4aa5db22d3
Merge branch 'asoc-4.19' into asoc-next 2018-08-09 14:47:05 +01:00
Dan Carpenter
13bdff337e drm/i915/kvmgt: fix an error code in gvt_dma_map_page()
The dma_mapping_error() returns true on error but we want to return
-ENOMEM here.

Fixes: 79e542f5af ("drm/i915/kvmgt: Support setting dma map for huge pages")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-07 10:42:54 +08:00
Michał Winiarski
3237c0dbe2 drm/i915/kvmgt: Fix compilation error
gvt_pin_guest_page extracted some of the gvt_dma_map_page functionality:
commit 79e542f5af ("drm/i915/kvmgt: Support setting dma map for huge pages")

And yet, part of it was reintroduced in:
commit 39b4cbadb9 ("drm/i915/kvmgt: Check the pfn got from vfio_pin_pages")

Causing kvmgt part to no longer build. Let's remove it.

Reported-by: Tomasz Lis <tomasz.lis@intel.com>
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Changbin Du <changbin.du@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180712155330.32055-1-michal.winiarski@intel.com
(cherry picked from commit 4eaf317a60)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-06 11:28:35 -07:00
Chris Wilson
75eef0f1ed drm/i915/lpe: Mark LPE audio runtime pm as "no callbacks"
The LPE audio is a child device of i915, it is powered up and down
alongside the igfx and presents no independent runtime interface. This
aptly fulfils the description of a "No-Callback" Device, so mark it
thus.

Fixes: 183c00350c ("drm/i915: Fix runtime PM for LPE audio")
Testcase: igt/pm_rpm/basic-pci-d3-state
Testcase: igt/pm_rpm/basic-rte
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180802140416.6062-1-chris@chris-wilson.co.uk
(cherry picked from commit 46e831abe8)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-06 11:18:09 -07:00
Mika Kuoppala
497bfb7068 Revert "drm/i915/icl: WaEnableFloatBlendOptimization"
The register for 0xe420 is unable to hold any value, including
this bit. The documentation is also mixed between having a
register bit for toggle and having a state command setup
for it. Apparently the register toggle is deprecated.

Remove the register toggle as evidence shows it's futile.

The thing remaining is an apology and humble request for
Mesa folks to resurrect their state setup for this as they
were on right track from start.

This reverts commit 0bf059f353.

Fixes: 0bf059f353 ("drm/i915/icl: WaEnableFloatBlendOptimization")
References: HSDES#1406393558
Cc: Oscar Mateo <oscar.mateo@intel.com>
Cc: Anuj Phogat <anuj.phogat@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180730120636.26958-1-mika.kuoppala@linux.intel.com
(cherry picked from commit c358514ba8)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-06 11:18:04 -07:00
Chris Wilson
027063b160 drm/i915: Interactive RPS mode
RPS provides a feedback loop where we use the load during the previous
evaluation interval to decide whether to up or down clock the GPU
frequency. Our responsiveness is split into 3 regimes, a high and low
plateau with the intent to keep the gpu clocked high to cover occasional
stalls under high load, and low despite occasional glitches under steady
low load, and inbetween. However, we run into situations like kodi where
we want to stay at low power (video decoding is done efficiently
inside the fixed function HW and doesn't need high clocks even for high
bitrate streams), but just occasionally the pipeline is more complex
than a video decode and we need a smidgen of extra GPU power to present
on time. In the high power regime, we sample at sub frame intervals with
a bias to upclocking, and conversely at low power we sample over a few
frames worth to provide what we consider to be the right levels of
responsiveness respectively. At low power, we more or less expect to be
kicked out to high power at the start of a busy sequence by waitboosting.

Prior to commit e9af4ea2b9 ("drm/i915: Avoid waitboosting on the active
request") whenever we missed the frame or stalled, we would immediate go
full throttle and upclock the GPU to max. But in commit e9af4ea2b9, we
relaxed the waitboosting to only apply if the pipeline was deep to avoid
over-committing resources for a near miss. Sadly though, a near miss is
still a miss, and perceptible as jitter in the frame delivery.

To try and prevent the near miss before having to resort to boosting
after the fact, we use the pageflip queue as an indication that we are
in an "interactive" regime and so should sample the load more frequently
to provide power before the frame misses it vblank. This will make us
more favorable to providing a small power increase (one or two bins) as
required rather than going all the way to maximum and then having to
work back down again. (We still keep the waitboosting mechanism around
just in case a dramatic change in system load requires urgent uplocking,
faster than we can provide in a few evaluation intervals.)

v2: Reduce rps_set_interactive to a boolean parameter to avoid the
confusion of what if they wanted a new power mode after pinning to a
different mode (which to choose?)
v3: Only reprogram RPS while the GT is awake, it will be set when we
wake the GT, and while off warns about being used outside of rpm.
v4: Fix deferred application of interactive mode
v5: s/state/interactive/
v6: Group the mutex with its principle in a substruct

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107111
Fixes: e9af4ea2b9 ("drm/i915: Avoid waitboosting on the active request")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180731132629.3381-1-chris@chris-wilson.co.uk
(cherry picked from commit 60548c554b)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-06 11:18:01 -07:00
Rodrigo Vivi
656921a512 drm/i915: Fix psr sink status report.
First of all don't try to read dpcd if PSR is not even supported.

But also, if read failed return -EIO instead of reporting via a
backchannel.

v2: fix dev_priv: At this level m->private is the connector. (CI/DK)
    don't convert dpcd read errors to EIO. (DK)

Fixes: 5b7b30864d ("drm/i915/psr: Split sink status into a separate debugfs node")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180720003155.16290-1-rodrigo.vivi@intel.com
(cherry picked from commit 7a72c78bdd)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-08-06 11:17:52 -07:00
Thomas Gleixner
f2701b77bb Merge 4.18-rc7 into master to pick up the KVM dependcy
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2018-08-05 16:39:29 +02:00
Nicolai Stange
447ae31667 x86: Don't include linux/irq.h from asm/hardirq.h
The next patch in this series will have to make the definition of
irq_cpustat_t available to entering_irq().

Inclusion of asm/hardirq.h into asm/apic.h would cause circular header
dependencies like

  asm/smp.h
    asm/apic.h
      asm/hardirq.h
        linux/irq.h
          linux/topology.h
            linux/smp.h
              asm/smp.h

or

  linux/gfp.h
    linux/mmzone.h
      asm/mmzone.h
        asm/mmzone_64.h
          asm/smp.h
            asm/apic.h
              asm/hardirq.h
                linux/irq.h
                  linux/irqdesc.h
                    linux/kobject.h
                      linux/sysfs.h
                        linux/kernfs.h
                          linux/idr.h
                            linux/gfp.h

and others.

This causes compilation errors because of the header guards becoming
effective in the second inclusion: symbols/macros that had been defined
before wouldn't be available to intermediate headers in the #include chain
anymore.

A possible workaround would be to move the definition of irq_cpustat_t
into its own header and include that from both, asm/hardirq.h and
asm/apic.h.

However, this wouldn't solve the real problem, namely asm/harirq.h
unnecessarily pulling in all the linux/irq.h cruft: nothing in
asm/hardirq.h itself requires it. Also, note that there are some other
archs, like e.g. arm64, which don't have that #include in their
asm/hardirq.h.

Remove the linux/irq.h #include from x86' asm/hardirq.h.

Fix resulting compilation errors by adding appropriate #includes to *.c
files as needed.

Note that some of these *.c files could be cleaned up a bit wrt. to their
set of #includes, but that should better be done from separate patches, if
at all.

Signed-off-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2018-08-05 09:53:13 +02:00
Dave Airlie
f8f15c34ac Merge tag 'drm-msm-next-2018-07-30' of git://people.freedesktop.org/~robclark/linux into drm-next
A bit larger this time around, due to introduction of "dpu1" support
for the display controller in sdm845 and beyond.  This has been on
list and undergoing refactoring since Feb (going from ~110kloc to
~30kloc), and all my review complaints have been addressed, so I'd be
happy to see this upstream so further feature work can procede on top
of upstream.

Also includes the gpu coredump support, which should be useful for
debugging gpu crashes.  And various other misc fixes and such.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGv-8y3zguY0Mj1vh=o+vrv_bJ8AwZ96wBXYPvMeQT2XcA@mail.gmail.com
2018-08-01 08:52:19 +10:00
Jordan Crouse
489cae632f include: Move ascii85 functions from i915 to linux/ascii85.h
The i915 DRM driver very cleverly used ascii85 encoding for their
GPU state file. Move the encode functions to a general header file to
support other drivers that might be interested in the same
functionality.

v4: Make the return value const char * as suggested by Chris Wilson
v3: Fix error_puts -> err_puts pointed out by the 01.org bot
v2: Update API to be cleaner for the caller as suggested by Chris Wilson

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-07-30 08:49:02 -04:00
Dave Airlie
3fce461827 BackMerge v4.18-rc7 into drm-next
rmk requested this for armada and I think we've had a few
conflicts build up.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2018-07-30 10:39:22 +10:00