Merge drm/drm-next into drm-intel-next

Need to bring commit d8bb92e70a43 ("drm/dp: Factor out a function to
probe a DPCD address") back as a dependency to further work in
drm-intel-next.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

16 files changed, 139 insertions, 127 deletions

diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 2a1f85f9a8a3..f668e75fbabe 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -143,6 +143,11 @@ struct dw_hdmi_plat_data {
 					   const struct drm_display_info *info,
 					   const struct drm_display_mode *mode);
 
+	/* Platform-specific audio enable/disable (optional) */
+	void (*enable_audio)(struct dw_hdmi *hdmi, int channel,
+			     int width, int rate, int non_pcm);
+	void (*disable_audio)(struct dw_hdmi *hdmi);
+
 	/* Vendor PHY support */
 	const struct dw_hdmi_phy_ops *phy_ops;
 	const char *phy_name;
@@ -173,6 +178,8 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense);
 
 int dw_hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn,
 			   struct device *codec_dev);
+void dw_hdmi_set_sample_non_pcm(struct dw_hdmi *hdmi, unsigned int non_pcm);
+void dw_hdmi_set_sample_width(struct dw_hdmi *hdmi, unsigned int width);
 void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate);
 void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt);
 void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, u8 *channel_status);
@@ -187,9 +194,11 @@ void dw_hdmi_phy_i2c_set_addr(struct dw_hdmi *hdmi, u8 address);
 void dw_hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data,
 			   unsigned char addr);
 
+void dw_hdmi_phy_gen1_reset(struct dw_hdmi *hdmi);
+
 void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable);
 void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, u8 enable);
-void dw_hdmi_phy_reset(struct dw_hdmi *hdmi);
+void dw_hdmi_phy_gen2_reset(struct dw_hdmi *hdmi);
 
 enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi,
 					       void *data);
diff --git a/include/drm/dp/drm_dp_helper.h b/include/drm/dp/drm_dp_helper.h
index 1eccd9741943..91af98e6617c 100644
--- a/include/drm/dp/drm_dp_helper.h
+++ b/include/drm/dp/drm_dp_helper.h
@@ -2053,6 +2053,7 @@ struct drm_dp_aux {
 	bool is_remote;
 };
 
+int drm_dp_dpcd_probe(struct drm_dp_aux *aux, unsigned int offset);
 ssize_t drm_dp_dpcd_read(struct drm_dp_aux *aux, unsigned int offset,
 			 void *buffer, size_t size);
 ssize_t drm_dp_dpcd_write(struct drm_dp_aux *aux, unsigned int offset,
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 1701c2128a5c..0777725085df 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -227,6 +227,18 @@ struct drm_private_state_funcs {
 	 */
 	void (*atomic_destroy_state)(struct drm_private_obj *obj,
 				     struct drm_private_state *state);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses &struct drm_private_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_private_obj_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_private_state *state);
 };
 
 /**
@@ -311,14 +323,21 @@ struct drm_private_obj {
 
 /**
  * struct drm_private_state - base struct for driver private object state
- * @state: backpointer to global drm_atomic_state
  *
- * Currently only contains a backpointer to the overall atomic update, but in
- * the future also might hold synchronization information similar to e.g.
- * &drm_crtc.commit.
+ * Currently only contains a backpointer to the overall atomic update,
+ * and the relevant private object but in the future also might hold
+ * synchronization information similar to e.g. &drm_crtc.commit.
  */
 struct drm_private_state {
+	/**
+	 * @state: backpointer to global drm_atomic_state
+	 */
 	struct drm_atomic_state *state;
+
+	/**
+	 * @obj: backpointer to the private object
+	 */
+	struct drm_private_obj *obj;
 };
 
 struct __drm_private_objs_state {
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index 144c495b99c4..b7e170584000 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -372,8 +372,8 @@ struct drm_connector;
 struct drm_connector_state;
 struct drm_display_mode;
 
-int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads);
-int drm_edid_to_speaker_allocation(struct edid *edid, u8 **sadb);
+int drm_edid_to_sad(const struct edid *edid, struct cea_sad **sads);
+int drm_edid_to_speaker_allocation(const struct edid *edid, u8 **sadb);
 int drm_av_sync_delay(struct drm_connector *connector,
 		      const struct drm_display_mode *mode);
 
@@ -569,8 +569,8 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
 int drm_add_override_edid_modes(struct drm_connector *connector);
 
 u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
-bool drm_detect_hdmi_monitor(struct edid *edid);
-bool drm_detect_monitor_audio(struct edid *edid);
+bool drm_detect_hdmi_monitor(const struct edid *edid);
+bool drm_detect_monitor_audio(const struct edid *edid);
 enum hdmi_quantization_range
 drm_default_rgb_quant_range(const struct drm_display_mode *mode);
 int drm_add_modes_noedid(struct drm_connector *connector,
@@ -578,11 +578,11 @@ int drm_add_modes_noedid(struct drm_connector *connector,
 void drm_set_preferred_mode(struct drm_connector *connector,
 			    int hpref, int vpref);
 
-int drm_edid_header_is_valid(const u8 *raw_edid);
+int drm_edid_header_is_valid(const void *edid);
 bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid,
 			  bool *edid_corrupt);
 bool drm_edid_is_valid(struct edid *edid);
-void drm_edid_get_monitor_name(struct edid *edid, char *name,
+void drm_edid_get_monitor_name(const struct edid *edid, char *name,
 			       int buflen);
 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
 					   int hsize, int vsize, int fresh,
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index a3acb7ac3550..e0a73a1e2df7 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -248,7 +248,7 @@ struct drm_file {
 	 */
 	struct drm_master *master;
 
-	/** @master_lock: Serializes @master. */
+	/** @master_lookup_lock: Serializes @master. */
 	spinlock_t master_lookup_lock;
 
 	/** @pid: Process that opened this file. */
diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
index 0b0937c0b2f6..55145eca0782 100644
--- a/include/drm/drm_format_helper.h
+++ b/include/drm/drm_format_helper.h
@@ -43,8 +43,7 @@ int drm_fb_blit_toio(void __iomem *dst, unsigned int dst_pitch, uint32_t dst_for
 		     const void *vmap, const struct drm_framebuffer *fb,
 		     const struct drm_rect *rect);
 
-void drm_fb_xrgb8888_to_mono_reversed(void *dst, unsigned int dst_pitch, const void *src,
-				      const struct drm_framebuffer *fb,
-				      const struct drm_rect *clip);
+void drm_fb_xrgb8888_to_mono(void *dst, unsigned int dst_pitch, const void *src,
+			     const struct drm_framebuffer *fb, const struct drm_rect *clip);
 
 #endif /* __LINUX_DRM_FORMAT_HELPER_H */
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index e2941cee14b6..9d7c61a122dc 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -407,11 +407,6 @@ int drm_gem_lock_reservations(struct drm_gem_object **objs, int count,
 			      struct ww_acquire_ctx *acquire_ctx);
 void drm_gem_unlock_reservations(struct drm_gem_object **objs, int count,
 				 struct ww_acquire_ctx *acquire_ctx);
-int drm_gem_fence_array_add(struct xarray *fence_array,
-			    struct dma_fence *fence);
-int drm_gem_fence_array_add_implicit(struct xarray *fence_array,
-				     struct drm_gem_object *obj,
-				     bool write);
 int drm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
 			    u32 handle, u64 *offset);
 
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 147e51b6d241..51e09a1a106a 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -137,6 +137,8 @@ struct mipi_dsi_host *of_find_mipi_dsi_host_by_node(struct device_node *node);
 #define MIPI_DSI_CLOCK_NON_CONTINUOUS	BIT(10)
 /* transmit data in low power */
 #define MIPI_DSI_MODE_LPM		BIT(11)
+/* transmit data ending at the same time for all lanes within one hsync */
+#define MIPI_DSI_HS_PKT_END_ALIGNED	BIT(12)
 
 enum mipi_dsi_pixel_format {
 	MIPI_DSI_FMT_RGB888,
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 2fa6b2c33b3f..a80ae9639e96 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -492,6 +492,8 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p,
 			   int adjust_flags);
 void drm_mode_copy(struct drm_display_mode *dst,
 		   const struct drm_display_mode *src);
+void drm_mode_init(struct drm_display_mode *dst,
+		   const struct drm_display_mode *src);
 struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
 					    const struct drm_display_mode *mode);
 bool drm_mode_match(const struct drm_display_mode *mode1,
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index fdfa9f37ce05..fafa70ac1337 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -1384,7 +1384,7 @@ struct drm_mode_config_helper_funcs {
 	 * starting to commit the update to the hardware.
 	 *
 	 * After the atomic update is committed to the hardware this hook needs
-	 * to call drm_atomic_helper_commit_hw_done(). Then wait for the upate
+	 * to call drm_atomic_helper_commit_hw_done(). Then wait for the update
 	 * to be executed by the hardware, for example using
 	 * drm_atomic_helper_wait_for_vblanks() or
 	 * drm_atomic_helper_wait_for_flip_done(), and then clean up the old
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
index 944f83ef9f2e..0fca8f38bee4 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -270,6 +270,7 @@ struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f);
  * @sched: the scheduler instance on which this job is scheduled.
  * @s_fence: contains the fences for the scheduling of job.
  * @finish_cb: the callback for the finished fence.
+ * @work: Helper to reschdeule job kill to different context.
  * @id: a unique id assigned to each job scheduled on the scheduler.
  * @karma: increment on every hang caused by this job. If this exceeds the hang
  *         limit of the scheduler then the job is marked guilty and will not
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index 155b19ee12fb..2d524f8b0802 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -55,8 +55,6 @@ struct ttm_placement;
 
 struct ttm_place;
 
-struct ttm_lru_bulk_move;
-
 /**
  * enum ttm_bo_type
  *
@@ -94,10 +92,8 @@ struct ttm_tt;
  * @ttm: TTM structure holding system pages.
  * @evicted: Whether the object was evicted without user-space knowing.
  * @deleted: True if the object is only a zombie and already deleted.
- * @lru: List head for the lru list.
  * @ddestroy: List head for the delayed destroy list.
  * @swap: List head for swap LRU list.
- * @moving: Fence set when BO is moving
  * @offset: The current GPU offset, which can have different meanings
  * depending on the memory type. For SYSTEM type memory, it should be 0.
  * @cur_placement: Hint of current placement.
@@ -138,19 +134,18 @@ struct ttm_buffer_object {
 	struct ttm_resource *resource;
 	struct ttm_tt *ttm;
 	bool deleted;
+	struct ttm_lru_bulk_move *bulk_move;
 
 	/**
 	 * Members protected by the bdev::lru_lock.
 	 */
 
-	struct list_head lru;
 	struct list_head ddestroy;
 
 	/**
 	 * Members protected by a bo reservation.
 	 */
 
-	struct dma_fence *moving;
 	unsigned priority;
 	unsigned pin_count;
 
@@ -291,30 +286,9 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
  */
 void ttm_bo_put(struct ttm_buffer_object *bo);
 
-/**
- * ttm_bo_move_to_lru_tail
- *
- * @bo: The buffer object.
- * @mem: Resource object.
- * @bulk: optional bulk move structure to remember BO positions
- *
- * Move this BO to the tail of all lru lists used to lookup and reserve an
- * object. This function must be called with struct ttm_global::lru_lock
- * held, and is used to make a BO less likely to be considered for eviction.
- */
-void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo,
-			     struct ttm_resource *mem,
-			     struct ttm_lru_bulk_move *bulk);
-
-/**
- * ttm_bo_bulk_move_lru_tail
- *
- * @bulk: bulk move structure
- *
- * Bulk move BOs to the LRU tail, only valid to use when driver makes sure that
- * BO order never changes. Should be called with ttm_global::lru_lock held.
- */
-void ttm_bo_bulk_move_lru_tail(struct ttm_lru_bulk_move *bulk);
+void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo);
+void ttm_bo_set_bulk_move(struct ttm_buffer_object *bo,
+			  struct ttm_lru_bulk_move *bulk);
 
 /**
  * ttm_bo_lock_delayed_workqueue
@@ -540,34 +514,8 @@ ssize_t ttm_bo_io(struct ttm_device *bdev, struct file *filp,
 int ttm_bo_swapout(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx,
 		   gfp_t gfp_flags);
 
-/**
- * ttm_bo_pin - Pin the buffer object.
- * @bo: The buffer object to pin
- *
- * Make sure the buffer is not evicted any more during memory pressure.
- */
-static inline void ttm_bo_pin(struct ttm_buffer_object *bo)
-{
-	dma_resv_assert_held(bo->base.resv);
-	WARN_ON_ONCE(!kref_read(&bo->kref));
-	++bo->pin_count;
-}
-
-/**
- * ttm_bo_unpin - Unpin the buffer object.
- * @bo: The buffer object to unpin
- *
- * Allows the buffer object to be evicted again during memory pressure.
- */
-static inline void ttm_bo_unpin(struct ttm_buffer_object *bo)
-{
-	dma_resv_assert_held(bo->base.resv);
-	WARN_ON_ONCE(!kref_read(&bo->kref));
-	if (bo->pin_count)
-		--bo->pin_count;
-	else
-		WARN_ON_ONCE(true);
-}
+void ttm_bo_pin(struct ttm_buffer_object *bo);
+void ttm_bo_unpin(struct ttm_buffer_object *bo);
 
 int ttm_mem_evict_first(struct ttm_device *bdev,
 			struct ttm_resource_manager *man,
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 5f087575194b..897b88f0bd59 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -45,33 +45,6 @@
 #include "ttm_tt.h"
 #include "ttm_pool.h"
 
-/**
- * struct ttm_lru_bulk_move_pos
- *
- * @first: first BO in the bulk move range
- * @last: last BO in the bulk move range
- *
- * Positions for a lru bulk move.
- */
-struct ttm_lru_bulk_move_pos {
-	struct ttm_buffer_object *first;
-	struct ttm_buffer_object *last;
-};
-
-/**
- * struct ttm_lru_bulk_move
- *
- * @tt: first/last lru entry for BOs in the TT domain
- * @vram: first/last lru entry for BOs in the VRAM domain
- * @swap: first/last lru entry for BOs on the swap list
- *
- * Helper structure for bulk moves on the LRU list.
- */
-struct ttm_lru_bulk_move {
-	struct ttm_lru_bulk_move_pos tt[TTM_MAX_BO_PRIORITY];
-	struct ttm_lru_bulk_move_pos vram[TTM_MAX_BO_PRIORITY];
-};
-
 /*
  * ttm_bo.c
  */
@@ -182,7 +155,7 @@ static inline void
 ttm_bo_move_to_lru_tail_unlocked(struct ttm_buffer_object *bo)
 {
 	spin_lock(&bo->bdev->lru_lock);
-	ttm_bo_move_to_lru_tail(bo, bo->resource, NULL);
+	ttm_bo_move_to_lru_tail(bo);
 	spin_unlock(&bo->bdev->lru_lock);
 }
 
@@ -272,7 +245,7 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
 			      struct ttm_resource *new_mem);
 
 /**
- * ttm_bo_move_accel_cleanup.
+ * ttm_bo_move_sync_cleanup.
  *
  * @bo: A pointer to a struct ttm_buffer_object.
  * @new_mem: struct ttm_resource indicating where to move.
@@ -280,13 +253,8 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
  * Special case of ttm_bo_move_accel_cleanup where the bo is guaranteed
  * by the caller to be idle. Typically used after memcpy buffer moves.
  */
-static inline void ttm_bo_move_sync_cleanup(struct ttm_buffer_object *bo,
-					    struct ttm_resource *new_mem)
-{
-	int ret = ttm_bo_move_accel_cleanup(bo, NULL, true, false, new_mem);
-
-	WARN_ON(ret);
-}
+void ttm_bo_move_sync_cleanup(struct ttm_buffer_object *bo,
+			      struct ttm_resource *new_mem);
 
 /**
  * ttm_bo_pipeline_gutting.
diff --git a/include/drm/ttm/ttm_device.h b/include/drm/ttm/ttm_device.h
index 0a4ddec78d8f..95b3c04b1ab9 100644
--- a/include/drm/ttm/ttm_device.h
+++ b/include/drm/ttm/ttm_device.h
@@ -30,8 +30,6 @@
 #include <drm/ttm/ttm_resource.h>
 #include <drm/ttm/ttm_pool.h>
 
-#define TTM_NUM_MEM_TYPES 8
-
 struct ttm_device;
 struct ttm_placement;
 struct ttm_buffer_object;
@@ -201,15 +199,6 @@ struct ttm_device_funcs {
 			     void *buf, int len, int write);
 
 	/**
-	 * struct ttm_bo_driver member del_from_lru_notify
-	 *
-	 * @bo: the buffer object deleted from lru
-	 *
-	 * notify driver that a BO was deleted from LRU.
-	 */
-	void (*del_from_lru_notify)(struct ttm_buffer_object *bo);
-
-	/**
 	 * Notify the driver that we're about to release a BO
 	 *
 	 * @bo: BO that is about to be released
diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h
index 0f1d55262c68..441653693970 100644
--- a/include/drm/ttm/ttm_resource.h
+++ b/include/drm/ttm/ttm_resource.h
@@ -26,14 +26,17 @@
 #define _TTM_RESOURCE_H_
 
 #include <linux/types.h>
+#include <linux/list.h>
 #include <linux/mutex.h>
 #include <linux/iosys-map.h>
 #include <linux/dma-fence.h>
+
 #include <drm/drm_print.h>
 #include <drm/ttm/ttm_caching.h>
 #include <drm/ttm/ttm_kmap_iter.h>
 
 #define TTM_MAX_BO_PRIORITY	4U
+#define TTM_NUM_MEM_TYPES 8
 
 struct ttm_device;
 struct ttm_resource_manager;
@@ -178,6 +181,47 @@ struct ttm_resource {
 	uint32_t placement;
 	struct ttm_bus_placement bus;
 	struct ttm_buffer_object *bo;
+
+	/**
+	 * @lru: Least recently used list, see &ttm_resource_manager.lru
+	 */
+	struct list_head lru;
+};
+
+/**
+ * struct ttm_resource_cursor
+ *
+ * @priority: the current priority
+ *
+ * Cursor to iterate over the resources in a manager.
+ */
+struct ttm_resource_cursor {
+	unsigned int priority;
+};
+
+/**
+ * struct ttm_lru_bulk_move_pos
+ *
+ * @first: first res in the bulk move range
+ * @last: last res in the bulk move range
+ *
+ * Range of resources for a lru bulk move.
+ */
+struct ttm_lru_bulk_move_pos {
+	struct ttm_resource *first;
+	struct ttm_resource *last;
+};
+
+/**
+ * struct ttm_lru_bulk_move
+ *
+ * @pos: first/last lru entry for resources in the each domain/priority
+ *
+ * Container for the current bulk move state. Should be used with
+ * ttm_lru_bulk_move_init() and ttm_bo_set_bulk_move().
+ */
+struct ttm_lru_bulk_move {
+	struct ttm_lru_bulk_move_pos pos[TTM_NUM_MEM_TYPES][TTM_MAX_BO_PRIORITY];
 };
 
 /**
@@ -266,6 +310,15 @@ ttm_resource_manager_cleanup(struct ttm_resource_manager *man)
 	man->move = NULL;
 }
 
+void ttm_lru_bulk_move_init(struct ttm_lru_bulk_move *bulk);
+void ttm_lru_bulk_move_add(struct ttm_lru_bulk_move *bulk,
+			   struct ttm_resource *res);
+void ttm_lru_bulk_move_del(struct ttm_lru_bulk_move *bulk,
+			   struct ttm_resource *res);
+void ttm_lru_bulk_move_tail(struct ttm_lru_bulk_move *bulk);
+
+void ttm_resource_move_to_lru_tail(struct ttm_resource *res);
+
 void ttm_resource_init(struct ttm_buffer_object *bo,
                        const struct ttm_place *place,
                        struct ttm_resource *res);
@@ -292,6 +345,26 @@ uint64_t ttm_resource_manager_usage(struct ttm_resource_manager *man);
 void ttm_resource_manager_debug(struct ttm_resource_manager *man,
 				struct drm_printer *p);
 
+struct ttm_resource *
+ttm_resource_manager_first(struct ttm_resource_manager *man,
+			   struct ttm_resource_cursor *cursor);
+struct ttm_resource *
+ttm_resource_manager_next(struct ttm_resource_manager *man,
+			  struct ttm_resource_cursor *cursor,
+			  struct ttm_resource *res);
+
+/**
+ * ttm_resource_manager_for_each_res - iterate over all resources
+ * @man: the resource manager
+ * @cursor: struct ttm_resource_cursor for the current position
+ * @res: the current resource
+ *
+ * Iterate over all the evictable resources in a resource manager.
+ */
+#define ttm_resource_manager_for_each_res(man, cursor, res)		\
+	for (res = ttm_resource_manager_first(man, cursor); res;	\
+	     res = ttm_resource_manager_next(man, cursor, res))
+
 struct ttm_kmap_iter *
 ttm_kmap_iter_iomap_init(struct ttm_kmap_iter_iomap *iter_io,
 			 struct io_mapping *iomap,
@@ -308,4 +381,8 @@ ttm_kmap_iter_linear_io_init(struct ttm_kmap_iter_linear_io *iter_io,
 void ttm_kmap_iter_linear_io_fini(struct ttm_kmap_iter_linear_io *iter_io,
 				  struct ttm_device *bdev,
 				  struct ttm_resource *mem);
+
+void ttm_resource_manager_create_debugfs(struct ttm_resource_manager *man,
+					 struct dentry * parent,
+					 const char *name);
 #endif
diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h
index f20832139815..17a0310e8aaa 100644
--- a/include/drm/ttm/ttm_tt.h
+++ b/include/drm/ttm/ttm_tt.h
@@ -140,6 +140,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc);
  * @bo: The buffer object we create the ttm for.
  * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags.
  * @caching: the desired caching state of the pages
+ * @extra_pages: Extra pages needed for the driver.
  *
  * Create a struct ttm_tt to back data with system memory pages.
  * No pages are actually allocated.
@@ -147,7 +148,8 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc);
  * NULL: Out of memory.
  */
 int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo,
-		uint32_t page_flags, enum ttm_caching caching);
+		uint32_t page_flags, enum ttm_caching caching,
+		unsigned long extra_pages);
 int ttm_sg_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo,
 		   uint32_t page_flags, enum ttm_caching caching);