Revision 0abfe7e2570d7c729a7662e82c09a23f00f29346 authored by Chris Wilson on 22 March 2017, 20:59:30 UTC, committed by Jani Nikula on 27 March 2017, 08:56:27 UTC
Commit e8a9c58fcd9a ("drm/i915: Unify active context tracking between legacy/execlists/guc") converted the legacy intel_ringbuffer submission to the same context pinning mechanism as execlists - that is to pin the context until the subsequent request is retired. Previously it used the vma retirement of the context object to keep itself pinned until the next request (after i915_vma_move_to_active()). In the conversion, I missed that the vma retirement was also responsible for marking the object as dirty. Mark the context object as dirty when pinning (equivalent to execlists) which ensures that if the context is swapped out due to mempressure or suspend/hibernation, when it is loaded back in it does so with the previous state (and not all zero). Fixes: e8a9c58fcd9a ("drm/i915: Unify active context tracking between legacy/execlists/guc") Reported-by: Dennis Gilmore <dennis@ausil.us> Reported-by: Mathieu Marquer <mathieu.marquer@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99993 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100181 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: <drm-intel-fixes@lists.freedesktop.org> # v4.11-rc1 Link: http://patchwork.freedesktop.org/patch/msgid/20170322205930.12762-1-chris@chris-wilson.co.uk Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> (cherry picked from commit 5d4bac5503fcc67dd7999571e243cee49371aef7) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
1 parent 69653f6
drm_bridge.h
/*
* Copyright (c) 2016 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifndef __DRM_BRIDGE_H__
#define __DRM_BRIDGE_H__
#include <linux/list.h>
#include <linux/ctype.h>
#include <drm/drm_mode_object.h>
#include <drm/drm_modes.h>
struct drm_bridge;
/**
* struct drm_bridge_funcs - drm_bridge control functions
*/
struct drm_bridge_funcs {
/**
* @attach:
*
* This callback is invoked whenever our bridge is being attached to a
* &drm_encoder.
*
* The attach callback is optional.
*
* RETURNS:
*
* Zero on success, error code on failure.
*/
int (*attach)(struct drm_bridge *bridge);
/**
* @detach:
*
* This callback is invoked whenever our bridge is being detached from a
* &drm_encoder.
*
* The detach callback is optional.
*/
void (*detach)(struct drm_bridge *bridge);
/**
* @mode_fixup:
*
* This callback is used to validate and adjust a mode. The paramater
* mode is the display mode that should be fed to the next element in
* the display chain, either the final &drm_connector or the next
* &drm_bridge. The parameter adjusted_mode is the input mode the bridge
* requires. It can be modified by this callback and does not need to
* match mode.
*
* This is the only hook that allows a bridge to reject a modeset. If
* this function passes all other callbacks must succeed for this
* configuration.
*
* The mode_fixup callback is optional.
*
* NOTE:
*
* This function is called in the check phase of atomic modesets, which
* can be aborted for any reason (including on userspace's request to
* just check whether a configuration would be possible). Drivers MUST
* NOT touch any persistent state (hardware or software) or data
* structures except the passed in @state parameter.
*
* RETURNS:
*
* True if an acceptable configuration is possible, false if the modeset
* operation should be rejected.
*/
bool (*mode_fixup)(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
/**
* @disable:
*
* This callback should disable the bridge. It is called right before
* the preceding element in the display pipe is disabled. If the
* preceding element is a bridge this means it's called before that
* bridge's @disable vfunc. If the preceding element is a &drm_encoder
* it's called right before the &drm_encoder_helper_funcs.disable,
* &drm_encoder_helper_funcs.prepare or &drm_encoder_helper_funcs.dpms
* hook.
*
* The bridge can assume that the display pipe (i.e. clocks and timing
* signals) feeding it is still running when this callback is called.
*
* The disable callback is optional.
*/
void (*disable)(struct drm_bridge *bridge);
/**
* @post_disable:
*
* This callback should disable the bridge. It is called right after the
* preceding element in the display pipe is disabled. If the preceding
* element is a bridge this means it's called after that bridge's
* @post_disable function. If the preceding element is a &drm_encoder
* it's called right after the encoder's
* &drm_encoder_helper_funcs.disable, &drm_encoder_helper_funcs.prepare
* or &drm_encoder_helper_funcs.dpms hook.
*
* The bridge must assume that the display pipe (i.e. clocks and timing
* singals) feeding it is no longer running when this callback is
* called.
*
* The post_disable callback is optional.
*/
void (*post_disable)(struct drm_bridge *bridge);
/**
* @mode_set:
*
* This callback should set the given mode on the bridge. It is called
* after the @mode_set callback for the preceding element in the display
* pipeline has been called already. If the bridge is the first element
* then this would be &drm_encoder_helper_funcs.mode_set. The display
* pipe (i.e. clocks and timing signals) is off when this function is
* called.
*/
void (*mode_set)(struct drm_bridge *bridge,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
/**
* @pre_enable:
*
* This callback should enable the bridge. It is called right before
* the preceding element in the display pipe is enabled. If the
* preceding element is a bridge this means it's called before that
* bridge's @pre_enable function. If the preceding element is a
* &drm_encoder it's called right before the encoder's
* &drm_encoder_helper_funcs.enable, &drm_encoder_helper_funcs.commit or
* &drm_encoder_helper_funcs.dpms hook.
*
* The display pipe (i.e. clocks and timing signals) feeding this bridge
* will not yet be running when this callback is called. The bridge must
* not enable the display link feeding the next bridge in the chain (if
* there is one) when this callback is called.
*
* The pre_enable callback is optional.
*/
void (*pre_enable)(struct drm_bridge *bridge);
/**
* @enable:
*
* This callback should enable the bridge. It is called right after
* the preceding element in the display pipe is enabled. If the
* preceding element is a bridge this means it's called after that
* bridge's @enable function. If the preceding element is a
* &drm_encoder it's called right after the encoder's
* &drm_encoder_helper_funcs.enable, &drm_encoder_helper_funcs.commit or
* &drm_encoder_helper_funcs.dpms hook.
*
* The bridge can assume that the display pipe (i.e. clocks and timing
* signals) feeding it is running when this callback is called. This
* callback must enable the display link feeding the next bridge in the
* chain if there is one.
*
* The enable callback is optional.
*/
void (*enable)(struct drm_bridge *bridge);
};
/**
* struct drm_bridge - central DRM bridge control structure
* @dev: DRM device this bridge belongs to
* @encoder: encoder to which this bridge is connected
* @next: the next bridge in the encoder chain
* @of_node: device node pointer to the bridge
* @list: to keep track of all added bridges
* @funcs: control functions
* @driver_private: pointer to the bridge driver's internal context
*/
struct drm_bridge {
struct drm_device *dev;
struct drm_encoder *encoder;
struct drm_bridge *next;
#ifdef CONFIG_OF
struct device_node *of_node;
#endif
struct list_head list;
const struct drm_bridge_funcs *funcs;
void *driver_private;
};
int drm_bridge_add(struct drm_bridge *bridge);
void drm_bridge_remove(struct drm_bridge *bridge);
struct drm_bridge *of_drm_find_bridge(struct device_node *np);
int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
struct drm_bridge *previous);
bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
void drm_bridge_disable(struct drm_bridge *bridge);
void drm_bridge_post_disable(struct drm_bridge *bridge);
void drm_bridge_mode_set(struct drm_bridge *bridge,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
void drm_bridge_pre_enable(struct drm_bridge *bridge);
void drm_bridge_enable(struct drm_bridge *bridge);
#endif
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