- 24 May, 2018 3 commits
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Yunwei Zhang authored
L3Bank could be fused off in hardware for debug purpose, and it is possible that subslice is enabled while its corresponding L3Bank pairs are disabled. In such case, if MCR packet control register(0xFDC) is programed to point to a disabled bank pair, a MMIO read into L3Bank range will return 0 instead of correct values. However, this is not going to be the case in any production silicon. Therefore, we only check at initialization and issue a warning should this really happen. References: HSDES#1405586840 v2: - use fls instead of find_last_bit (Chris) - use is_power_of_2() instead of counting bit set (Chris) v3: - rebase on latest tip v5: - Added references (Mika) - Move local variable into scope where they are used (Ursulin) - use a new local variable to reduce long line of code (Ursulin) v6: - Some coding style and use more local variables for clearer logic (Ursulin) Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Michel Thierry <michel.thierry@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Signed-off-by:
Yunwei Zhang <yunwei.zhang@intel.com> Reviewed-by:
Oscar Mateo <oscar.mateo@intel.com> Signed-off-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1526683285-24861-1-git-send-email-yunwei.zhang@intel.com
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Yunwei Zhang authored
WaProgramMgsrForCorrectSliceSpecificMmioReads applies for Icelake as well. References: HSD#1405586840, BSID#0575 v2: - GEN11 mask is different from its predecessors. (Oscar) - Better separate GEN10 and GEN11. (Oscar) Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Michel Thierry <michel.thierry@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Signed-off-by:
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Yunwei Zhang authored
WaProgramMgsrForCorrectSliceSpecificMmioReads dictate that before any MMIO read into Slice/Subslice specific registers, MCR packet control register(0xFDC) needs to be programmed to point to any enabled slice/subslice pair. Otherwise, incorrect value will be returned. However, that means each subsequent MMIO read will be forwarded to a specific slice/subslice combination as read is unicast. This is OK since slice/subslice specific register values are consistent in almost all cases across slice/subslice. There are rare occasions such as INSTDONE that this value will be dependent on slice/subslice combo, in such cases, we need to program 0xFDC and recover this after. This is already covered by read_subslice_reg. Also, 0xFDC will lose its information after TDR/engine reset/power state change. References: HSD#1405586840, BSID#0575 v2: - use fls() instead of find_last_bit() (Chris) - added INTEL_SSEU to extract sseu from device info. (Chris) v3: - rebase on latest tip v5: - Added references (Mika) - Change the ordered of passing arguments and etc. (Ursulin) v7: - Moved WA explanation Comments(Oscar) - Rebased. v8: - Renamed sanitize_mcr to calculate_s_ss_select. (Oscar) - calculate s/ss selector instead of whole mcr. (Oscar) v9: - Updated function name (Oscar) - Remove redundant variables (Oscar) v10: - Separate pre-GEN10 and GEN11 mask. (Oscar) Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Michel Thierry <michel.thierry@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Signed-off-by:
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- 23 May, 2018 9 commits
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José Roberto de Souza authored
'Pipe CSC enable' bit is more than just deprecated in ICL+, it was disabled in commit 077ef1f0 ("drm/i915/icl: Don't set pipe CSC/Gamma in PLANE_COLOR_CTL") for primary and sprite planes as it was causing those planes to be rendered as always black but it was not disabled in cursor plane, also causing it to be rendered as black. As mentioned in the commit referenced above, this is a workaround too and the CSC and gamma per plane values needs to be setup before enable CSC and gamma again. BSpec: 4278 and 7635 Cc: James Ausmus <james.ausmus@intel.com> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by:
José Roberto de Souza <jose.souza@intel.com> Signed-off-by:
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Chris Wilson authored
The driver assumes that the kernel context is pinned and always available for use from any process or atomic context. Make it so for selftesting as well! Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
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Ville Syrjälä authored
We don't support using the power sequencer with other ports besides LVDS on pre-ilk platforms. WARN if someone has mistakenly connected the power sequencer to the wrong port. Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180518152931.13104-7-ville.syrjala@linux.intel.comReviewed-by:
Jani Nikula <jani.nikula@intel.com>
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Ville Syrjälä authored
Add the missing eDP port handling into assert_panel_unlocked(). We now have intel_dp_port_enabled() which makes this trivial. Signed-off-by:
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Ville Syrjälä authored
The power sequencer has bits to allow DP C to be used for eDP. Currently we assume this will never happen, but I guess it could theoretically be a thing. Make the code do the right thing in that case, and toss in a MISSING_CASE() for any other port. Signed-off-by:
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Ville Syrjälä authored
Clean up the DP pipe select bits. To make the whole situation a bit less ugly we'll start to share the same code between .get_hw_state(), the port state asserts, and the VLV power sequencer code. v2: Return PIPE_A for cpt/ppt when the port isn't selected by any transcoder. Returning INVALID_PIPE explodes *somewhere* on some machines (can't immediately see where though). This now matches the old behaviour. v3: Order the defines shift,mask,value (Jani) Signed-off-by: -
Ville Syrjälä authored
for_each_encoder_on_crtc() is legacy and shouldn't be used by atomic drivers. Let's throw out intel_trans_dp_port_sel() and replace it with intel_get_crtc_new_encoder() which looks the atomic state instead. Since we now have to call intel_get_crtc_new_encoder() during the commit phase we'll need to plumb in the top level atomic state. The crtc_state->state pointers are no longer valid at that point. Signed-off-by:
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Ville Syrjälä authored
Parametrize the TRANS_DP_PORT_SEL macros. v2: WARN for bogus ports (Jani) Order the defines mask,value (Jani) Reviewed-by: -
Ville Syrjälä authored
The ddi code no longer uses intel_ddi_get_crtc_new_encoder(). Move it elsewhere where we have some users left. Reviewed-by:
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- 22 May, 2018 8 commits
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Chris Wilson authored
nospec quite reasonably asserts that it will never be used with an index larger than unsigned long (that being the largest possibly index into an C array). However, our ubi uses the convention of u64 for any large integer, running afoul of the assertion on 32b. Reduce our index to an unsigned long, checking for type overflow first. drivers/gpu/drm/i915/i915_query.c: In function 'i915_query_ioctl': include/linux/compiler.h:339:38: error: call to '__compiletime_assert_119' declared with attribute error: BUILD_BUG_ON failed: sizeof(_s) > sizeof(long) Reported-by: kbuild-all@01.org Fixes: 84b510e2 ("drm/i915/query: Protect tainted function pointer lookup") Signed-off-by:
Lionel Landwerlin <lionel.g.landwerlin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180522121018.15199-1-chris@chris-wilson.co.uk
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Ville Syrjälä authored
dev_priv->vbt.lvds_vbt is set but never actually used. Kill it. Signed-off-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180508124136.10969-3-ville.syrjala@linux.intel.com
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Ville Syrjälä authored
Replace dev_priv->vbt.edp.support with dev_priv->vbt.int_lvds_support. We'll want to extend its use beyond the LVDS vs. eDP case in the future. v2: Nuke the edp.support from parse_edp() (Jani) Only clear int_lvds_support for gen5+ to preserve the current behaviour (Jani) Cc: Jani Nikula <jani.nikula@intel.com> Cc: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: -
Chris Wilson authored
As we handle the allocation failure of the page directory and tables by propagating the failure back to userspace, allow it to fail if direct reclaim is unable to satisfy the request (i.e. disable the oomkiller). The premise being that if we are unable to allocate a single page for the pagetable, we will not be able to handle the multitude of pages required for the gfx operation and we should back off to allow the system to recover. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106609Signed-off-by:
Matthew Auld <matthew.william.auld@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180522083643.29601-1-chris@chris-wilson.co.uk
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Chris Wilson authored
Smatch identifies i915_query_ioctl() as being a potential victim of Spectre due to its use of a tainted user index into a function pointer array. Use array_index_nospec() to defang the user index before using it to lookup the function pointer. Fixes: a446ae2c ("drm/i915: add query uAPI") Signed-off-by:
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Jani Nikula authored
This reverts commit dc911f5b. Per the report, no matter what display mode you select with xrandr, the i915 driver will always select the alternate fixed mode. For the reporter this means that the display will always run at 40Hz which is quite annoying. This may be due to the mode comparison. But there are some other potential issues. The choice of alt_fixed_mode seems dubious. It's the first non-preferred mode, but there are no guarantees that the only difference would be refresh rate. Similarly, there may be more than one preferred mode in the probed modes list, and the commit changes the preferred mode selection to choose the last one on the list instead of the first. (Note that the probed modes list is the raw, unfiltered, unsorted list of modes from drm_add_edid_modes(), not the pretty result after a drm_helper_probe_single_connector_modes() call.) Finally, we already have eerily similar code in place to find the downclock mode for DRRS that seems like could be reused here. Back to the drawing board. Note: This is a hand-crafted revert due to conflicts. If it fails to backport, please just try reverting the original commit directly. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105469Reported-by:
Rune Petersen <rune@megahurts.dk> Reported-by:
Mark Spencer <n7u4722r35@ynzlx.anonbox.net> Fixes: dc911f5b ("drm/i915/edp: Allow alternate fixed mode for eDP if available.") Cc: Clint Taylor <clinton.a.taylor@intel.com> Cc: David Weinehall <david.weinehall@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Jim Bride <jim.bride@linux.intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: intel-gfx@lists.freedesktop.org Cc: <stable@vger.kernel.org> # v4.14+ Signed-off-by:
Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180516080110.22770-1-jani.nikula@intel.com
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Daniel Stone authored
Since drm_framebuffer can now store GEM objects directly, place them there rather than in our own subclass. v2: Only hold a single reference per framebuffer, not per plane. (Ville) v3: Drop NULL check in intel_fb_obj. (Ville) Signed-off-by:
Daniel Stone <daniels@collabora.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: intel-gfx@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20180518143008.4120-2-daniels@collabora.com
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Daniel Stone authored
We already have a macro to pull the GEM object from a FB, so use it everywhere. We'll make use of this later to move the object storage. Signed-off-by:
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- 21 May, 2018 1 commit
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Zhenyu Wang authored
When we do shadowing, workload's request might not be allocated yet, so we still require shadow context's object. And when complete workload, delay to zero workload's request pointer after used for update guest context. v2: Move request alloc earlier as already try to track shadow status depending on request state, which also facilitate to use request->hw_context for target engine context reference. Fixes: 1fc44d9b ("drm/i915: Store a pointer to intel_context in i915_request") Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Zhi Wang <zhi.a.wang@intel.com> Cc: Weinan Li <weinan.z.li@intel.com> Signed-off-by:
Zhenyu Wang <zhenyuw@linux.intel.com> Reviewed-by:
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- 19 May, 2018 6 commits
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Chris Wilson authored
When testing reset, we wait for 1s on the main thread for the hang to start. Meanwhile, we continue submitting requests on all the background threads, and we may have more threads than cores and so potentially starve the waiter from being woken within the timeout. As the hang timeout and the active timeouts are the same, it is hard to distinguish which caused the timeout. Bump the active thread timeouts to 5s, compared to the 1s timeout for the hang, so that we preferentially report the hang timing out, while hopefully ensuring that we do at least wake up the hang thread first before declaring the background active timeout. Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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Chris Wilson authored
In order to support engine reset from irq (timer) context, we need to be able to re-initialise the breadcrumbs. So we need to promote the plain spin_lock_irq to a safe spin_lock_irqsave. Signed-off-by:
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Chris Wilson authored
We want to be able to reset the GPU from inside a timer callback (hardirq context). One step requires us to copy the default context state over to the guilty context, which means we need to plan in advance to have that object accessible from within an atomic context. The atomic context prevents us from pinning the object or from peeking into the shmemfs backing store (all may sleep), so we choose to pin the default_state into memory when the engine becomes active. This compromise allows us to swap out the default state when idle, when required. References: 5692251c ("drm/i915/lrc: Scrub the GPU state of the guilty hanging request") Signed-off-by:
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Chris Wilson authored
To be useful later, enable intel_engine_dump() to be called from irq context (i.e. using saving and restoring irq start rather than assuming we enter with irqs enabled). Signed-off-by:
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Chris Wilson authored
We rely on ksoftirqd to run in a timely fashion in order to drain the execlists queue. Quite frequently, it does not. In some cases we may see latencies of over 200ms triggering our idle timeouts and forcing us to declare the driver wedged! Thus we can speed up idle detection by bypassing ksoftirqd in these cases and flush our tasklet to confirm if we are indeed still waiting for the ELSP to drain. v2: Put the execlists.first check back; it is required for handling reset! References: https://bugs.freedesktop.org/show_bug.cgi?id=106373Signed-off-by:
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Chris Wilson authored
Delay registering ourselves with the acpi lid notification mechanism until we are registering the connectors after initialisation is complete. This prevents a possibility of trying to handle the lid notification before we are ready with the danger of chasing uninitialised function pointers. BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 IP: (null) PGD 0 P4D 0 Oops: 0010 [#1] PREEMPT SMP PTI Modules linked in: arc4(+) iwldvm(+) i915(+) mac80211 i2c_algo_bit coretemp mei_wdt iwlwifi drm_kms_helper kvm_intel wmi_bmof iTCO_wdt iTCO_vendor_support kvm snd_hda_codec_conexant snd_hda_codec_generic drm psmouse cfg80211 irqbypass input_leds pcspkr i2c_i801 snd_hda_intel snd_hda_codec thinkpad_acpi snd_hda_core mei_me lpc_ich snd_hwdep e1000e wmi nvram snd_pcm mei snd_timer shpchp ptp pps_core rfkill syscopyarea snd intel_agp sysfillrect intel_gtt soundcore sysimgblt battery led_class fb_sys_fops ac rtc_cmos agpgart evdev mac_hid acpi_cpufreq ip_tables x_tables ext4 crc32c_generic crc16 mbcache jbd2 fscrypto crypto_simd glue_helper cryptd aes_x86_64 xts algif_skcipher af_alg dm_crypt dm_mod sd_mod uas usb_storage serio_raw atkbd libps2 ahci libahci uhci_hcd libata scsi_mod ehci_pci ehci_hcd usbcore usb_common i8042 serio CPU: 1 PID: 378 Comm: systemd-logind Not tainted 4.16.8-1-ARCH #1 Hardware name: LENOVO 7454CTO/7454CTO, BIOS 6DET72WW (3.22 ) 10/25/2012 RIP: 0010: (null) RSP: 0018:ffffaf4580c33a18 EFLAGS: 00010287 RAX: 0000000000000000 RBX: ffff947533558000 RCX: 000000000000003e RDX: ffffffffc0aa80c0 RSI: ffffaf4580c33a3c RDI: ffff947534e4c000 RBP: ffff947533558338 R08: ffff947534598930 R09: ffffffffc0a928b1 R10: ffffd8f181d5fd40 R11: 0000000000000000 R12: ffffffffc0a928b1 R13: ffff947533558368 R14: ffffffffc0a928a9 R15: ffff947534e4c000 FS: 00007f3dc4ddb940(0000) GS:ffff947539280000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000006e214000 CR4: 00000000000406e0 Call Trace: ? intel_modeset_setup_hw_state+0x385/0xf60 [i915] ? __intel_display_resume+0x1e/0xc0 [i915] ? intel_display_resume+0xcc/0x120 [i915] ? intel_lid_notify+0xbc/0xc0 [i915] ? notifier_call_chain+0x47/0x70 ? blocking_notifier_call_chain+0x3e/0x60 ? acpi_lid_notify_state+0x8f/0x1d0 ? acpi_lid_update_state+0x49/0x70 ? acpi_lid_input_open+0x60/0x90 ? input_open_device+0x5d/0xa0 ? evdev_open+0x1ba/0x1e0 [evdev] ? chrdev_open+0xa3/0x1b0 ? cdev_put.part.0+0x20/0x20 ? do_dentry_open+0x14c/0x300 ? path_openat+0x30c/0x1240 ? current_time+0x16/0x60 ? do_filp_open+0x93/0x100 ? __check_object_size+0xfb/0x180 ? do_sys_open+0x186/0x210 ? do_syscall_64+0x74/0x190 ? entry_SYSCALL_64_after_hwframe+0x3d/0xa2 Code: Bad RIP value. RIP: (null) RSP: ffffaf4580c33a18 CR2: 0000000000000000 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106559 Fixes: c1c7af60 ("drm/i915: force mode set at lid open time") Signed-off-by:
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- 18 May, 2018 10 commits
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Ville Syrjälä authored
i965 does not have native DP. Let's rename the remaining gen4 references in the DP code to g4x. Signed-off-by:
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Ville Syrjälä authored
To make the intent more clear, let's rename the signal level funcs for the SNB/IVB CPU eDP. Signed-off-by:
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Ville Syrjälä authored
Almost all of the GEN7 checks in the DP code are actually looking for IVB. HSW doesn't even take these codepaths, and VLV is excluded on account of not having port A. So let's change the checks to IS_IVB to make the code less confusing. Reviewed-by:
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Ville Syrjälä authored
All DDI platforms support the full set of preemph settings for each supported vswing, so let's use the same code for them. We'll also move the code into intel_ddi.c so that it sits closer to the actual buf trans tables. Signed-off-by:
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Ville Syrjälä authored
Use intel_ddi_dp_voltage_max() for HSW/BDW too instead of letting these fall through the if ladder in a weird way. This function will look at the actual buf trans tables we have for HSW/BDW to determine the max vswing level. It looks to me like the current code leads HSW port A down the IVB port A path, HSW port B+ and BDW fall through to the very end. Both cases do result in the correct max vswing level 2, but it's very hard to see that from the code. Signed-off-by:
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Ondrej Zary authored
Radiant P845 does not have LVDS, only VGA. Cc: stable@vger.kernel.org Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105468Signed-off-by:
Ondrej Zary <linux@rainbow-software.org> Signed-off-by:
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Chris Wilson authored
As all backends implement the same pin_count mechanism and do a dec-and-test as their first step, pull that into the common intel_context_unpin(). This also pulls into the caller, eliminating the indirect call in the usual steady state case. The intel_context_pin() side is a little more complicated as it combines the lookup/alloc as well as pinning the state, and so is left for a later date. Signed-off-by:
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Chris Wilson authored
To ease the frequent and ugly pointer dance of &request->gem_context->engine[request->engine->id] during request submission, store that pointer as request->hw_context. One major advantage that we will exploit later is that this decouples the logical context state from the engine itself. v2: Set mock_context->ops so we don't crash and burn in selftests. Cleanups from Tvrtko. Signed-off-by: -
Chris Wilson authored
Move the knowledge about resetting the current context tracking on the engine from inside i915_gem_context.c into intel_engine_cs.c Signed-off-by:
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Chris Wilson authored
In the next patch, we want to store the intel_context pointer inside i915_request, as it is frequently access via a convoluted dance when submitting the request to hw. Having two context pointers inside i915_request leads to confusion so first rename the existing i915_gem_context pointer to i915_request.gem_context. Signed-off-by:
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- 17 May, 2018 3 commits
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Paulo Zanoni authored
For all platforms that run haswell_crtc_enable, our spec tells us to configure the transcoder clocks and do link training before it tells us to set pipeconf and the other pipe/transcoder/plane registers. Starting from Icelake, we get machine hangs if we try to touch the pipe/transcoder registers without having the clocks configured and not having some chicken bits set. So this patch changes haswell_crtc_enable() to issue the calls at the appropriate order mandated by the spec. While setting the appropriate chicken bits would also work here, it's better if we actually program the hardware the way it is intended to be programmed. And the chicken bit also has some theoretical downsides that may or may not affect us. Also, correctly programming the hardware does not prevent us from setting the chicken bits in a later patch in case we decide to. v2: Don't forget link training (Ville). Cc: Arthur J Runyan <arthur.j.runyan@intel.com> Cc: James Ausmus <james.ausmus@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Manasi Navare <manasi.d.navare@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180502215851.30736-1-paulo.r.zanoni@intel.com
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Oscar Mateo authored
Stop reading some now deprecated interrupt registers in both debugfs and error state. Instead, read the new equivalents in the Gen11 interrupt repartitioning scheme. Note that the equivalent to the PM ISR & IIR cannot be read without affecting the current state of the system, so I've opted for leaving them out. See gen11_reset_one_iir() for more info. v2: else if !!! (Paulo) v3: another else if (Vinay) v4: - Rebased - Renamed patch - Improved the ordering of GENs - Improved the printing of per-GEN info v5: Avoid maybe-unitialized & add comment explaining the lack of PM ISR & IIR Suggested-by:Vinay Belgaumkar <vinay.belgaumkar@intel.com> [Paulo: fix commit message and coding style.] Signed-off-by:
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Chris Wilson authored
The command parser is feature complete, stable and required by userspace. In commit 41736a8e ("drm/i915: Use the precomputed value for whether to enable command parsing") I accidentally removed control from the modparam, and as no one has complained, remove the left over modparam completely! References: 41736a8e ("drm/i915: Use the precomputed value for whether to enable command parsing") Signed-off-by:
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