![Ben Widawsky](/assets/img/avatar_default.png)
This would have never worked. Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1039 lines
29 KiB
C
1039 lines
29 KiB
C
/* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
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*/
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/*
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*
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* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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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
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <linux/device.h>
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#include <drm/drmP.h>
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#include <drm/i915_drm.h>
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#include "i915_drv.h"
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#include "i915_trace.h"
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#include "intel_drv.h"
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#include <linux/console.h>
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#include <linux/module.h>
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#include <drm/drm_crtc_helper.h>
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static int i915_modeset __read_mostly = -1;
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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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unsigned int i915_fbpercrtc __always_unused = 0;
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module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
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int i915_panel_ignore_lid __read_mostly = 1;
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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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unsigned int i915_powersave __read_mostly = 1;
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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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int i915_semaphores __read_mostly = -1;
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module_param_named(semaphores, i915_semaphores, int, 0600);
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MODULE_PARM_DESC(semaphores,
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"Use semaphores for inter-ring sync (default: -1 (use per-chip defaults))");
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int i915_enable_rc6 __read_mostly = -1;
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module_param_named(i915_enable_rc6, i915_enable_rc6, int, 0400);
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MODULE_PARM_DESC(i915_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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int i915_enable_fbc __read_mostly = -1;
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module_param_named(i915_enable_fbc, i915_enable_fbc, int, 0600);
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MODULE_PARM_DESC(i915_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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unsigned int i915_lvds_downclock __read_mostly = 0;
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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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int i915_lvds_channel_mode __read_mostly;
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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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int i915_panel_use_ssc __read_mostly = -1;
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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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int i915_vbt_sdvo_panel_type __read_mostly = -1;
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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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static bool i915_try_reset __read_mostly = true;
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module_param_named(reset, i915_try_reset, bool, 0600);
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MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)");
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bool i915_enable_hangcheck __read_mostly = 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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int i915_enable_ppgtt __read_mostly = -1;
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module_param_named(i915_enable_ppgtt, i915_enable_ppgtt, int, 0400);
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MODULE_PARM_DESC(i915_enable_ppgtt,
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"Enable PPGTT (default: true)");
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int i915_enable_psr __read_mostly = 0;
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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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unsigned int i915_preliminary_hw_support __read_mostly = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT);
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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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int i915_disable_power_well __read_mostly = 1;
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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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int i915_enable_ips __read_mostly = 1;
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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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bool i915_fastboot __read_mostly = 0;
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module_param_named(fastboot, i915_fastboot, bool, 0600);
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MODULE_PARM_DESC(fastboot, "Try to skip unnecessary mode sets at boot time "
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"(default: false)");
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int i915_enable_pc8 __read_mostly = 1;
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module_param_named(enable_pc8, i915_enable_pc8, int, 0600);
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MODULE_PARM_DESC(enable_pc8, "Enable support for low power package C states (PC8+) (default: true)");
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int i915_pc8_timeout __read_mostly = 5000;
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module_param_named(pc8_timeout, i915_pc8_timeout, int, 0600);
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MODULE_PARM_DESC(pc8_timeout, "Number of msecs of idleness required to enter PC8+ (default: 5000)");
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bool i915_prefault_disable __read_mostly;
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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). For developers only.");
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static struct drm_driver driver;
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static const struct intel_device_info intel_i830_info = {
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.gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .num_pipes = 2,
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.has_overlay = 1, .overlay_needs_physical = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_845g_info = {
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.gen = 2, .num_pipes = 1,
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.has_overlay = 1, .overlay_needs_physical = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_i85x_info = {
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.gen = 2, .is_i85x = 1, .is_mobile = 1, .num_pipes = 2,
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.cursor_needs_physical = 1,
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.has_overlay = 1, .overlay_needs_physical = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_i865g_info = {
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.gen = 2, .num_pipes = 1,
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.has_overlay = 1, .overlay_needs_physical = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_i915g_info = {
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.gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, .num_pipes = 2,
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.has_overlay = 1, .overlay_needs_physical = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_i915gm_info = {
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.gen = 3, .is_mobile = 1, .num_pipes = 2,
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.cursor_needs_physical = 1,
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.has_overlay = 1, .overlay_needs_physical = 1,
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.supports_tv = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_i945g_info = {
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.gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, .num_pipes = 2,
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.has_overlay = 1, .overlay_needs_physical = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_i945gm_info = {
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.gen = 3, .is_i945gm = 1, .is_mobile = 1, .num_pipes = 2,
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.has_hotplug = 1, .cursor_needs_physical = 1,
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.has_overlay = 1, .overlay_needs_physical = 1,
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.supports_tv = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_i965g_info = {
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.gen = 4, .is_broadwater = 1, .num_pipes = 2,
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.has_hotplug = 1,
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.has_overlay = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_i965gm_info = {
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.gen = 4, .is_crestline = 1, .num_pipes = 2,
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.is_mobile = 1, .has_fbc = 1, .has_hotplug = 1,
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.has_overlay = 1,
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.supports_tv = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_g33_info = {
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.gen = 3, .is_g33 = 1, .num_pipes = 2,
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.need_gfx_hws = 1, .has_hotplug = 1,
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.has_overlay = 1,
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.ring_mask = RENDER_RING,
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};
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static const struct intel_device_info intel_g45_info = {
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.gen = 4, .is_g4x = 1, .need_gfx_hws = 1, .num_pipes = 2,
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.has_pipe_cxsr = 1, .has_hotplug = 1,
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.ring_mask = RENDER_RING | BSD_RING,
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};
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static const struct intel_device_info intel_gm45_info = {
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.gen = 4, .is_g4x = 1, .num_pipes = 2,
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.is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1,
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.has_pipe_cxsr = 1, .has_hotplug = 1,
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.supports_tv = 1,
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.ring_mask = RENDER_RING | BSD_RING,
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};
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static const struct intel_device_info intel_pineview_info = {
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.gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .num_pipes = 2,
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.need_gfx_hws = 1, .has_hotplug = 1,
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.has_overlay = 1,
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};
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static const struct intel_device_info intel_ironlake_d_info = {
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.gen = 5, .num_pipes = 2,
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.need_gfx_hws = 1, .has_hotplug = 1,
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.ring_mask = RENDER_RING | BSD_RING,
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};
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static const struct intel_device_info intel_ironlake_m_info = {
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.gen = 5, .is_mobile = 1, .num_pipes = 2,
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.need_gfx_hws = 1, .has_hotplug = 1,
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.has_fbc = 1,
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.ring_mask = RENDER_RING | BSD_RING,
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};
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static const struct intel_device_info intel_sandybridge_d_info = {
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.gen = 6, .num_pipes = 2,
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.need_gfx_hws = 1, .has_hotplug = 1,
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.has_fbc = 1,
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.ring_mask = RENDER_RING | BSD_RING | BLT_RING,
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.has_llc = 1,
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};
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static const struct intel_device_info intel_sandybridge_m_info = {
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.gen = 6, .is_mobile = 1, .num_pipes = 2,
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.need_gfx_hws = 1, .has_hotplug = 1,
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.has_fbc = 1,
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.ring_mask = RENDER_RING | BSD_RING | BLT_RING,
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.has_llc = 1,
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};
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#define GEN7_FEATURES \
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.gen = 7, .num_pipes = 3, \
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.need_gfx_hws = 1, .has_hotplug = 1, \
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.has_fbc = 1, \
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.ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
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.has_llc = 1
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static const struct intel_device_info intel_ivybridge_d_info = {
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GEN7_FEATURES,
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.is_ivybridge = 1,
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};
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static const struct intel_device_info intel_ivybridge_m_info = {
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GEN7_FEATURES,
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.is_ivybridge = 1,
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.is_mobile = 1,
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};
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static const struct intel_device_info intel_ivybridge_q_info = {
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GEN7_FEATURES,
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.is_ivybridge = 1,
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.num_pipes = 0, /* legal, last one wins */
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};
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static const struct intel_device_info intel_valleyview_m_info = {
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GEN7_FEATURES,
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.is_mobile = 1,
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.num_pipes = 2,
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.is_valleyview = 1,
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.display_mmio_offset = VLV_DISPLAY_BASE,
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.has_fbc = 0, /* legal, last one wins */
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.has_llc = 0, /* legal, last one wins */
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};
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static const struct intel_device_info intel_valleyview_d_info = {
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GEN7_FEATURES,
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.num_pipes = 2,
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.is_valleyview = 1,
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.display_mmio_offset = VLV_DISPLAY_BASE,
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.has_fbc = 0, /* legal, last one wins */
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.has_llc = 0, /* legal, last one wins */
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};
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static const struct intel_device_info intel_haswell_d_info = {
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GEN7_FEATURES,
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.is_haswell = 1,
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.has_ddi = 1,
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.has_fpga_dbg = 1,
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.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
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};
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static const struct intel_device_info intel_haswell_m_info = {
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GEN7_FEATURES,
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.is_haswell = 1,
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.is_mobile = 1,
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.has_ddi = 1,
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.has_fpga_dbg = 1,
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.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
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};
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static const struct intel_device_info intel_broadwell_d_info = {
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.is_preliminary = 1,
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.gen = 8, .num_pipes = 3,
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.need_gfx_hws = 1, .has_hotplug = 1,
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.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
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.has_llc = 1,
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.has_ddi = 1,
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};
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static const struct intel_device_info intel_broadwell_m_info = {
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.is_preliminary = 1,
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.gen = 8, .is_mobile = 1, .num_pipes = 3,
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.need_gfx_hws = 1, .has_hotplug = 1,
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.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
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.has_llc = 1,
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.has_ddi = 1,
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};
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/*
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* Make sure any device matches here are from most specific to most
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* general. For example, since the Quanta match is based on the subsystem
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* and subvendor IDs, we need it to come before the more general IVB
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* PCI ID matches, otherwise we'll use the wrong info struct above.
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*/
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#define INTEL_PCI_IDS \
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INTEL_I830_IDS(&intel_i830_info), \
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INTEL_I845G_IDS(&intel_845g_info), \
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INTEL_I85X_IDS(&intel_i85x_info), \
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INTEL_I865G_IDS(&intel_i865g_info), \
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INTEL_I915G_IDS(&intel_i915g_info), \
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INTEL_I915GM_IDS(&intel_i915gm_info), \
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INTEL_I945G_IDS(&intel_i945g_info), \
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INTEL_I945GM_IDS(&intel_i945gm_info), \
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INTEL_I965G_IDS(&intel_i965g_info), \
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INTEL_G33_IDS(&intel_g33_info), \
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INTEL_I965GM_IDS(&intel_i965gm_info), \
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INTEL_GM45_IDS(&intel_gm45_info), \
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INTEL_G45_IDS(&intel_g45_info), \
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INTEL_PINEVIEW_IDS(&intel_pineview_info), \
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INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \
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INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \
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INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \
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INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \
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INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \
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INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \
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INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \
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INTEL_HSW_D_IDS(&intel_haswell_d_info), \
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INTEL_HSW_M_IDS(&intel_haswell_m_info), \
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INTEL_VLV_M_IDS(&intel_valleyview_m_info), \
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INTEL_VLV_D_IDS(&intel_valleyview_d_info), \
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INTEL_BDW_M_IDS(&intel_broadwell_m_info), \
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INTEL_BDW_D_IDS(&intel_broadwell_d_info)
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static const struct pci_device_id pciidlist[] = { /* aka */
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INTEL_PCI_IDS,
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{0, 0, 0}
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};
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#if defined(CONFIG_DRM_I915_KMS)
|
|
MODULE_DEVICE_TABLE(pci, pciidlist);
|
|
#endif
|
|
|
|
void intel_detect_pch(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct pci_dev *pch;
|
|
|
|
/* In all current cases, num_pipes is equivalent to the PCH_NOP setting
|
|
* (which really amounts to a PCH but no South Display).
|
|
*/
|
|
if (INTEL_INFO(dev)->num_pipes == 0) {
|
|
dev_priv->pch_type = PCH_NOP;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The reason to probe ISA bridge instead of Dev31:Fun0 is to
|
|
* make graphics device passthrough work easy for VMM, that only
|
|
* need to expose ISA bridge to let driver know the real hardware
|
|
* underneath. This is a requirement from virtualization team.
|
|
*
|
|
* In some virtualized environments (e.g. XEN), there is irrelevant
|
|
* ISA bridge in the system. To work reliably, we should scan trhough
|
|
* all the ISA bridge devices and check for the first match, instead
|
|
* of only checking the first one.
|
|
*/
|
|
pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL);
|
|
while (pch) {
|
|
struct pci_dev *curr = pch;
|
|
if (pch->vendor == PCI_VENDOR_ID_INTEL) {
|
|
unsigned short id;
|
|
id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
|
|
dev_priv->pch_id = id;
|
|
|
|
if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
|
|
dev_priv->pch_type = PCH_IBX;
|
|
DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
|
|
WARN_ON(!IS_GEN5(dev));
|
|
} else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
|
|
dev_priv->pch_type = PCH_CPT;
|
|
DRM_DEBUG_KMS("Found CougarPoint PCH\n");
|
|
WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
|
|
} else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
|
|
/* PantherPoint is CPT compatible */
|
|
dev_priv->pch_type = PCH_CPT;
|
|
DRM_DEBUG_KMS("Found PantherPoint PCH\n");
|
|
WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
|
|
} else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
|
|
dev_priv->pch_type = PCH_LPT;
|
|
DRM_DEBUG_KMS("Found LynxPoint PCH\n");
|
|
WARN_ON(!IS_HASWELL(dev));
|
|
WARN_ON(IS_ULT(dev));
|
|
} else if (IS_BROADWELL(dev)) {
|
|
dev_priv->pch_type = PCH_LPT;
|
|
dev_priv->pch_id =
|
|
INTEL_PCH_LPT_LP_DEVICE_ID_TYPE;
|
|
DRM_DEBUG_KMS("This is Broadwell, assuming "
|
|
"LynxPoint LP PCH\n");
|
|
} else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
|
|
dev_priv->pch_type = PCH_LPT;
|
|
DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
|
|
WARN_ON(!IS_HASWELL(dev));
|
|
WARN_ON(!IS_ULT(dev));
|
|
} else {
|
|
goto check_next;
|
|
}
|
|
pci_dev_put(pch);
|
|
break;
|
|
}
|
|
check_next:
|
|
pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, curr);
|
|
pci_dev_put(curr);
|
|
}
|
|
if (!pch)
|
|
DRM_DEBUG_KMS("No PCH found?\n");
|
|
}
|
|
|
|
bool i915_semaphore_is_enabled(struct drm_device *dev)
|
|
{
|
|
if (INTEL_INFO(dev)->gen < 6)
|
|
return 0;
|
|
|
|
/* Until we get further testing... */
|
|
if (IS_GEN8(dev)) {
|
|
WARN_ON(!i915_preliminary_hw_support);
|
|
return 0;
|
|
}
|
|
|
|
if (i915_semaphores >= 0)
|
|
return i915_semaphores;
|
|
|
|
#ifdef CONFIG_INTEL_IOMMU
|
|
/* Enable semaphores on SNB when IO remapping is off */
|
|
if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped)
|
|
return false;
|
|
#endif
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int i915_drm_freeze(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_crtc *crtc;
|
|
|
|
/* ignore lid events during suspend */
|
|
mutex_lock(&dev_priv->modeset_restore_lock);
|
|
dev_priv->modeset_restore = MODESET_SUSPENDED;
|
|
mutex_unlock(&dev_priv->modeset_restore_lock);
|
|
|
|
/* We do a lot of poking in a lot of registers, make sure they work
|
|
* properly. */
|
|
hsw_disable_package_c8(dev_priv);
|
|
intel_display_set_init_power(dev, true);
|
|
|
|
drm_kms_helper_poll_disable(dev);
|
|
|
|
pci_save_state(dev->pdev);
|
|
|
|
/* If KMS is active, we do the leavevt stuff here */
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
int error;
|
|
|
|
error = i915_gem_suspend(dev);
|
|
if (error) {
|
|
dev_err(&dev->pdev->dev,
|
|
"GEM idle failed, resume might fail\n");
|
|
return error;
|
|
}
|
|
|
|
cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work);
|
|
|
|
drm_irq_uninstall(dev);
|
|
dev_priv->enable_hotplug_processing = false;
|
|
/*
|
|
* Disable CRTCs directly since we want to preserve sw state
|
|
* for _thaw.
|
|
*/
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
|
|
dev_priv->display.crtc_disable(crtc);
|
|
|
|
intel_modeset_suspend_hw(dev);
|
|
}
|
|
|
|
i915_gem_suspend_gtt_mappings(dev);
|
|
|
|
i915_save_state(dev);
|
|
|
|
intel_opregion_fini(dev);
|
|
|
|
console_lock();
|
|
intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED);
|
|
console_unlock();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int i915_suspend(struct drm_device *dev, pm_message_t state)
|
|
{
|
|
int error;
|
|
|
|
if (!dev || !dev->dev_private) {
|
|
DRM_ERROR("dev: %p\n", dev);
|
|
DRM_ERROR("DRM not initialized, aborting suspend.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (state.event == PM_EVENT_PRETHAW)
|
|
return 0;
|
|
|
|
|
|
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
error = i915_drm_freeze(dev);
|
|
if (error)
|
|
return error;
|
|
|
|
if (state.event == PM_EVENT_SUSPEND) {
|
|
/* Shut down the device */
|
|
pci_disable_device(dev->pdev);
|
|
pci_set_power_state(dev->pdev, PCI_D3hot);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void intel_console_resume(struct work_struct *work)
|
|
{
|
|
struct drm_i915_private *dev_priv =
|
|
container_of(work, struct drm_i915_private,
|
|
console_resume_work);
|
|
struct drm_device *dev = dev_priv->dev;
|
|
|
|
console_lock();
|
|
intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
|
|
console_unlock();
|
|
}
|
|
|
|
static void intel_resume_hotplug(struct drm_device *dev)
|
|
{
|
|
struct drm_mode_config *mode_config = &dev->mode_config;
|
|
struct intel_encoder *encoder;
|
|
|
|
mutex_lock(&mode_config->mutex);
|
|
DRM_DEBUG_KMS("running encoder hotplug functions\n");
|
|
|
|
list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
|
|
if (encoder->hot_plug)
|
|
encoder->hot_plug(encoder);
|
|
|
|
mutex_unlock(&mode_config->mutex);
|
|
|
|
/* Just fire off a uevent and let userspace tell us what to do */
|
|
drm_helper_hpd_irq_event(dev);
|
|
}
|
|
|
|
static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int error = 0;
|
|
|
|
intel_uncore_early_sanitize(dev);
|
|
|
|
intel_uncore_sanitize(dev);
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET) &&
|
|
restore_gtt_mappings) {
|
|
mutex_lock(&dev->struct_mutex);
|
|
i915_gem_restore_gtt_mappings(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
|
|
intel_power_domains_init_hw(dev);
|
|
|
|
i915_restore_state(dev);
|
|
intel_opregion_setup(dev);
|
|
|
|
/* KMS EnterVT equivalent */
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
intel_init_pch_refclk(dev);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
error = i915_gem_init_hw(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
/* We need working interrupts for modeset enabling ... */
|
|
drm_irq_install(dev);
|
|
|
|
intel_modeset_init_hw(dev);
|
|
|
|
drm_modeset_lock_all(dev);
|
|
intel_modeset_setup_hw_state(dev, true);
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
/*
|
|
* ... but also need to make sure that hotplug processing
|
|
* doesn't cause havoc. Like in the driver load code we don't
|
|
* bother with the tiny race here where we might loose hotplug
|
|
* notifications.
|
|
* */
|
|
intel_hpd_init(dev);
|
|
dev_priv->enable_hotplug_processing = true;
|
|
/* Config may have changed between suspend and resume */
|
|
intel_resume_hotplug(dev);
|
|
}
|
|
|
|
intel_opregion_init(dev);
|
|
|
|
/*
|
|
* The console lock can be pretty contented on resume due
|
|
* to all the printk activity. Try to keep it out of the hot
|
|
* path of resume if possible.
|
|
*/
|
|
if (console_trylock()) {
|
|
intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
|
|
console_unlock();
|
|
} else {
|
|
schedule_work(&dev_priv->console_resume_work);
|
|
}
|
|
|
|
/* Undo what we did at i915_drm_freeze so the refcount goes back to the
|
|
* expected level. */
|
|
hsw_enable_package_c8(dev_priv);
|
|
|
|
mutex_lock(&dev_priv->modeset_restore_lock);
|
|
dev_priv->modeset_restore = MODESET_DONE;
|
|
mutex_unlock(&dev_priv->modeset_restore_lock);
|
|
return error;
|
|
}
|
|
|
|
static int i915_drm_thaw(struct drm_device *dev)
|
|
{
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET))
|
|
i915_check_and_clear_faults(dev);
|
|
|
|
return __i915_drm_thaw(dev, true);
|
|
}
|
|
|
|
int i915_resume(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int ret;
|
|
|
|
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
if (pci_enable_device(dev->pdev))
|
|
return -EIO;
|
|
|
|
pci_set_master(dev->pdev);
|
|
|
|
/*
|
|
* Platforms with opregion should have sane BIOS, older ones (gen3 and
|
|
* earlier) need to restore the GTT mappings since the BIOS might clear
|
|
* all our scratch PTEs.
|
|
*/
|
|
ret = __i915_drm_thaw(dev, !dev_priv->opregion.header);
|
|
if (ret)
|
|
return ret;
|
|
|
|
drm_kms_helper_poll_enable(dev);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i915_reset - reset chip after a hang
|
|
* @dev: drm device to reset
|
|
*
|
|
* Reset the chip. Useful if a hang is detected. Returns zero on successful
|
|
* reset or otherwise an error code.
|
|
*
|
|
* Procedure is fairly simple:
|
|
* - reset the chip using the reset reg
|
|
* - re-init context state
|
|
* - re-init hardware status page
|
|
* - re-init ring buffer
|
|
* - re-init interrupt state
|
|
* - re-init display
|
|
*/
|
|
int i915_reset(struct drm_device *dev)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
bool simulated;
|
|
int ret;
|
|
|
|
if (!i915_try_reset)
|
|
return 0;
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
i915_gem_reset(dev);
|
|
|
|
simulated = dev_priv->gpu_error.stop_rings != 0;
|
|
|
|
ret = intel_gpu_reset(dev);
|
|
|
|
/* Also reset the gpu hangman. */
|
|
if (simulated) {
|
|
DRM_INFO("Simulated gpu hang, resetting stop_rings\n");
|
|
dev_priv->gpu_error.stop_rings = 0;
|
|
if (ret == -ENODEV) {
|
|
DRM_INFO("Reset not implemented, but ignoring "
|
|
"error for simulated gpu hangs\n");
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
if (ret) {
|
|
DRM_ERROR("Failed to reset chip: %i\n", ret);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
return ret;
|
|
}
|
|
|
|
/* Ok, now get things going again... */
|
|
|
|
/*
|
|
* Everything depends on having the GTT running, so we need to start
|
|
* there. Fortunately we don't need to do this unless we reset the
|
|
* chip at a PCI level.
|
|
*
|
|
* Next we need to restore the context, but we don't use those
|
|
* yet either...
|
|
*
|
|
* Ring buffer needs to be re-initialized in the KMS case, or if X
|
|
* was running at the time of the reset (i.e. we weren't VT
|
|
* switched away).
|
|
*/
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET) ||
|
|
!dev_priv->ums.mm_suspended) {
|
|
dev_priv->ums.mm_suspended = 0;
|
|
|
|
ret = i915_gem_init_hw(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
if (ret) {
|
|
DRM_ERROR("Failed hw init on reset %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
drm_irq_uninstall(dev);
|
|
drm_irq_install(dev);
|
|
intel_hpd_init(dev);
|
|
} else {
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
struct intel_device_info *intel_info =
|
|
(struct intel_device_info *) ent->driver_data;
|
|
|
|
if (IS_PRELIMINARY_HW(intel_info) && !i915_preliminary_hw_support) {
|
|
DRM_INFO("This hardware requires preliminary hardware support.\n"
|
|
"See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Only bind to function 0 of the device. Early generations
|
|
* used function 1 as a placeholder for multi-head. This causes
|
|
* us confusion instead, especially on the systems where both
|
|
* functions have the same PCI-ID!
|
|
*/
|
|
if (PCI_FUNC(pdev->devfn))
|
|
return -ENODEV;
|
|
|
|
driver.driver_features &= ~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP);
|
|
|
|
return drm_get_pci_dev(pdev, ent, &driver);
|
|
}
|
|
|
|
static void
|
|
i915_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
struct drm_device *dev = pci_get_drvdata(pdev);
|
|
|
|
drm_put_dev(dev);
|
|
}
|
|
|
|
static int i915_pm_suspend(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct drm_device *drm_dev = pci_get_drvdata(pdev);
|
|
int error;
|
|
|
|
if (!drm_dev || !drm_dev->dev_private) {
|
|
dev_err(dev, "DRM not initialized, aborting suspend.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
|
|
return 0;
|
|
|
|
error = i915_drm_freeze(drm_dev);
|
|
if (error)
|
|
return error;
|
|
|
|
pci_disable_device(pdev);
|
|
pci_set_power_state(pdev, PCI_D3hot);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i915_pm_resume(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct drm_device *drm_dev = pci_get_drvdata(pdev);
|
|
|
|
return i915_resume(drm_dev);
|
|
}
|
|
|
|
static int i915_pm_freeze(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct drm_device *drm_dev = pci_get_drvdata(pdev);
|
|
|
|
if (!drm_dev || !drm_dev->dev_private) {
|
|
dev_err(dev, "DRM not initialized, aborting suspend.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
return i915_drm_freeze(drm_dev);
|
|
}
|
|
|
|
static int i915_pm_thaw(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct drm_device *drm_dev = pci_get_drvdata(pdev);
|
|
|
|
return i915_drm_thaw(drm_dev);
|
|
}
|
|
|
|
static int i915_pm_poweroff(struct device *dev)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct drm_device *drm_dev = pci_get_drvdata(pdev);
|
|
|
|
return i915_drm_freeze(drm_dev);
|
|
}
|
|
|
|
static const struct dev_pm_ops i915_pm_ops = {
|
|
.suspend = i915_pm_suspend,
|
|
.resume = i915_pm_resume,
|
|
.freeze = i915_pm_freeze,
|
|
.thaw = i915_pm_thaw,
|
|
.poweroff = i915_pm_poweroff,
|
|
.restore = i915_pm_resume,
|
|
};
|
|
|
|
static const struct vm_operations_struct i915_gem_vm_ops = {
|
|
.fault = i915_gem_fault,
|
|
.open = drm_gem_vm_open,
|
|
.close = drm_gem_vm_close,
|
|
};
|
|
|
|
static const struct file_operations i915_driver_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = drm_open,
|
|
.release = drm_release,
|
|
.unlocked_ioctl = drm_ioctl,
|
|
.mmap = drm_gem_mmap,
|
|
.poll = drm_poll,
|
|
.read = drm_read,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = i915_compat_ioctl,
|
|
#endif
|
|
.llseek = noop_llseek,
|
|
};
|
|
|
|
static struct drm_driver driver = {
|
|
/* Don't use MTRRs here; the Xserver or userspace app should
|
|
* deal with them for Intel hardware.
|
|
*/
|
|
.driver_features =
|
|
DRIVER_USE_AGP | DRIVER_REQUIRE_AGP |
|
|
DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
|
|
DRIVER_RENDER,
|
|
.load = i915_driver_load,
|
|
.unload = i915_driver_unload,
|
|
.open = i915_driver_open,
|
|
.lastclose = i915_driver_lastclose,
|
|
.preclose = i915_driver_preclose,
|
|
.postclose = i915_driver_postclose,
|
|
|
|
/* Used in place of i915_pm_ops for non-DRIVER_MODESET */
|
|
.suspend = i915_suspend,
|
|
.resume = i915_resume,
|
|
|
|
.device_is_agp = i915_driver_device_is_agp,
|
|
.master_create = i915_master_create,
|
|
.master_destroy = i915_master_destroy,
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
.debugfs_init = i915_debugfs_init,
|
|
.debugfs_cleanup = i915_debugfs_cleanup,
|
|
#endif
|
|
.gem_free_object = i915_gem_free_object,
|
|
.gem_vm_ops = &i915_gem_vm_ops,
|
|
|
|
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
|
|
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
|
|
.gem_prime_export = i915_gem_prime_export,
|
|
.gem_prime_import = i915_gem_prime_import,
|
|
|
|
.dumb_create = i915_gem_dumb_create,
|
|
.dumb_map_offset = i915_gem_mmap_gtt,
|
|
.dumb_destroy = drm_gem_dumb_destroy,
|
|
.ioctls = i915_ioctls,
|
|
.fops = &i915_driver_fops,
|
|
.name = DRIVER_NAME,
|
|
.desc = DRIVER_DESC,
|
|
.date = DRIVER_DATE,
|
|
.major = DRIVER_MAJOR,
|
|
.minor = DRIVER_MINOR,
|
|
.patchlevel = DRIVER_PATCHLEVEL,
|
|
};
|
|
|
|
static struct pci_driver i915_pci_driver = {
|
|
.name = DRIVER_NAME,
|
|
.id_table = pciidlist,
|
|
.probe = i915_pci_probe,
|
|
.remove = i915_pci_remove,
|
|
.driver.pm = &i915_pm_ops,
|
|
};
|
|
|
|
static int __init i915_init(void)
|
|
{
|
|
driver.num_ioctls = i915_max_ioctl;
|
|
|
|
/*
|
|
* If CONFIG_DRM_I915_KMS is set, default to KMS unless
|
|
* explicitly disabled with the module pararmeter.
|
|
*
|
|
* Otherwise, just follow the parameter (defaulting to off).
|
|
*
|
|
* Allow optional vga_text_mode_force boot option to override
|
|
* the default behavior.
|
|
*/
|
|
#if defined(CONFIG_DRM_I915_KMS)
|
|
if (i915_modeset != 0)
|
|
driver.driver_features |= DRIVER_MODESET;
|
|
#endif
|
|
if (i915_modeset == 1)
|
|
driver.driver_features |= DRIVER_MODESET;
|
|
|
|
#ifdef CONFIG_VGA_CONSOLE
|
|
if (vgacon_text_force() && i915_modeset == -1)
|
|
driver.driver_features &= ~DRIVER_MODESET;
|
|
#endif
|
|
|
|
if (!(driver.driver_features & DRIVER_MODESET)) {
|
|
driver.get_vblank_timestamp = NULL;
|
|
#ifndef CONFIG_DRM_I915_UMS
|
|
/* Silently fail loading to not upset userspace. */
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
return drm_pci_init(&driver, &i915_pci_driver);
|
|
}
|
|
|
|
static void __exit i915_exit(void)
|
|
{
|
|
#ifndef CONFIG_DRM_I915_UMS
|
|
if (!(driver.driver_features & DRIVER_MODESET))
|
|
return; /* Never loaded a driver. */
|
|
#endif
|
|
|
|
drm_pci_exit(&driver, &i915_pci_driver);
|
|
}
|
|
|
|
module_init(i915_init);
|
|
module_exit(i915_exit);
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL and additional rights");
|