84c33a64b4
This patch enables the framework for using MMIO based flip calls,
in contrast with the CS based flip calls which are being used currently.
MMIO based flip calls can be enabled on architectures where
Render and Blitter engines reside in different power wells. The
decision to use MMIO flips can be made based on workloads to give
100% residency for Media power well.
v2: The MMIO flips now use the interrupt driven mechanism for issuing the
flips when target seqno is reached. (Incorporating Ville's idea)
v3: Rebasing on latest code. Code restructuring after incorporating
Damien's comments
v4: Addressing Ville's review comments
-general cleanup
-updating only base addr instead of calling update_primary_plane
-extending patch for gen5+ platforms
v5: Addressed Ville's review comments
-Making mmio flip vs cs flip selection based on module parameter
-Adding check for DRIVER_MODESET feature in notify_ring before calling
notify mmio flip.
-Other changes mostly in function arguments
v6: -Having a seperate function to check condition for using mmio flips (Ville)
-propogating error code from i915_gem_check_olr (Ville)
v7: -Adding __must_check with i915_gem_check_olr (Chris)
-Renaming mmio_flip_data to mmio_flip (Chris)
-Rebasing on latest nightly
v8: -Rebasing on latest code
-squash 3rd patch in series(mmio setbase vs page flip race) with this patch
-Added new tiling mode update in intel_do_mmio_flip (Chris)
v9: -check for obj->last_write_seqno being 0 instead of obj->ring being NULL in
intel_postpone_flip, as this is a more restrictive condition (Chris)
v10: -Applied Chris's suggestions for squashing patches 2,3 into this patch.
These patches make the selection of CS vs MMIO flip at the page flip time, and
make the module parameter for using mmio flips as tristate, the states being
'force CS flips', 'force mmio flips', 'driver discretion'.
Changed the logic for driver discretion (Chris)
v11: Minor code cleanup(better readability, fixing whitespace errors, using
lockdep to check mutex locked status in postpone_flip, removal of __must_check
in function definition) (Chris)
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Sourab Gupta <sourab.gupta@intel.com>
Signed-off-by: Akash Goel <akash.goel@intel.com>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk> # snb, ivb
[danvet: Fix up parameter alignement checkpatch spotted.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
164 lines
6.3 KiB
C
164 lines
6.3 KiB
C
/*
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "i915_drv.h"
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struct i915_params i915 __read_mostly = {
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.modeset = -1,
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.panel_ignore_lid = 1,
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.powersave = 1,
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.semaphores = -1,
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.lvds_downclock = 0,
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.lvds_channel_mode = 0,
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.panel_use_ssc = -1,
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.vbt_sdvo_panel_type = -1,
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.enable_rc6 = -1,
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.enable_fbc = -1,
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.enable_hangcheck = true,
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.enable_ppgtt = -1,
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.enable_psr = 0,
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.preliminary_hw_support = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT),
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.disable_power_well = 1,
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.enable_ips = 1,
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.fastboot = 0,
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.prefault_disable = 0,
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.reset = true,
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.invert_brightness = 0,
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.disable_display = 0,
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.enable_cmd_parser = 1,
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.disable_vtd_wa = 0,
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.use_mmio_flip = 0,
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};
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module_param_named(modeset, i915.modeset, int, 0400);
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MODULE_PARM_DESC(modeset,
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"Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, "
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"1=on, -1=force vga console preference [default])");
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module_param_named(panel_ignore_lid, i915.panel_ignore_lid, int, 0600);
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MODULE_PARM_DESC(panel_ignore_lid,
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"Override lid status (0=autodetect, 1=autodetect disabled [default], "
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"-1=force lid closed, -2=force lid open)");
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module_param_named(powersave, i915.powersave, int, 0600);
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MODULE_PARM_DESC(powersave,
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"Enable powersavings, fbc, downclocking, etc. (default: true)");
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module_param_named(semaphores, i915.semaphores, int, 0400);
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MODULE_PARM_DESC(semaphores,
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"Use semaphores for inter-ring sync "
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"(default: -1 (use per-chip defaults))");
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module_param_named(enable_rc6, i915.enable_rc6, int, 0400);
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MODULE_PARM_DESC(enable_rc6,
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"Enable power-saving render C-state 6. "
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"Different stages can be selected via bitmask values "
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"(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
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"For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
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"default: -1 (use per-chip default)");
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module_param_named(enable_fbc, i915.enable_fbc, int, 0600);
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MODULE_PARM_DESC(enable_fbc,
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"Enable frame buffer compression for power savings "
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"(default: -1 (use per-chip default))");
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module_param_named(lvds_downclock, i915.lvds_downclock, int, 0400);
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MODULE_PARM_DESC(lvds_downclock,
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"Use panel (LVDS/eDP) downclocking for power savings "
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"(default: false)");
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module_param_named(lvds_channel_mode, i915.lvds_channel_mode, int, 0600);
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MODULE_PARM_DESC(lvds_channel_mode,
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"Specify LVDS channel mode "
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"(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
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module_param_named(lvds_use_ssc, i915.panel_use_ssc, int, 0600);
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MODULE_PARM_DESC(lvds_use_ssc,
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"Use Spread Spectrum Clock with panels [LVDS/eDP] "
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"(default: auto from VBT)");
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module_param_named(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0600);
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MODULE_PARM_DESC(vbt_sdvo_panel_type,
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"Override/Ignore selection of SDVO panel mode in the VBT "
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"(-2=ignore, -1=auto [default], index in VBT BIOS table)");
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module_param_named(reset, i915.reset, bool, 0600);
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MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)");
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module_param_named(enable_hangcheck, i915.enable_hangcheck, bool, 0644);
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MODULE_PARM_DESC(enable_hangcheck,
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"Periodically check GPU activity for detecting hangs. "
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"WARNING: Disabling this can cause system wide hangs. "
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"(default: true)");
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module_param_named(enable_ppgtt, i915.enable_ppgtt, int, 0400);
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MODULE_PARM_DESC(enable_ppgtt,
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"Override PPGTT usage. "
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"(-1=auto [default], 0=disabled, 1=aliasing, 2=full)");
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module_param_named(enable_psr, i915.enable_psr, int, 0600);
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MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)");
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module_param_named(preliminary_hw_support, i915.preliminary_hw_support, int, 0600);
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MODULE_PARM_DESC(preliminary_hw_support,
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"Enable preliminary hardware support.");
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module_param_named(disable_power_well, i915.disable_power_well, int, 0600);
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MODULE_PARM_DESC(disable_power_well,
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"Disable the power well when possible (default: true)");
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module_param_named(enable_ips, i915.enable_ips, int, 0600);
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MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");
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module_param_named(fastboot, i915.fastboot, bool, 0600);
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MODULE_PARM_DESC(fastboot,
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"Try to skip unnecessary mode sets at boot time (default: false)");
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module_param_named(prefault_disable, i915.prefault_disable, bool, 0600);
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MODULE_PARM_DESC(prefault_disable,
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"Disable page prefaulting for pread/pwrite/reloc (default:false). "
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"For developers only.");
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module_param_named(invert_brightness, i915.invert_brightness, int, 0600);
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MODULE_PARM_DESC(invert_brightness,
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"Invert backlight brightness "
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"(-1 force normal, 0 machine defaults, 1 force inversion), please "
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"report PCI device ID, subsystem vendor and subsystem device ID "
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"to dri-devel@lists.freedesktop.org, if your machine needs it. "
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"It will then be included in an upcoming module version.");
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module_param_named(disable_display, i915.disable_display, bool, 0600);
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MODULE_PARM_DESC(disable_display, "Disable display (default: false)");
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module_param_named(disable_vtd_wa, i915.disable_vtd_wa, bool, 0600);
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MODULE_PARM_DESC(disable_vtd_wa, "Disable all VT-d workarounds (default: false)");
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module_param_named(enable_cmd_parser, i915.enable_cmd_parser, int, 0600);
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MODULE_PARM_DESC(enable_cmd_parser,
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"Enable command parsing (1=enabled [default], 0=disabled)");
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module_param_named(use_mmio_flip, i915.use_mmio_flip, int, 0600);
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MODULE_PARM_DESC(use_mmio_flip,
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"use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
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