1 files changed, 92 insertions, 681 deletions

diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index cac7a8a0825a..1afa891f488a 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -37,532 +37,25 @@
 #include <linux/spinlock.h>
 #include <linux/dma-resv.h>
 
+#include <drm/ttm/ttm_device.h>
+
 #include "ttm_bo_api.h"
-#include "ttm_memory.h"
-#include "ttm_module.h"
+#include "ttm_kmap_iter.h"
 #include "ttm_placement.h"
 #include "ttm_tt.h"
-
-#define TTM_MAX_BO_PRIORITY	4U
-
-#define TTM_MEMTYPE_FLAG_FIXED         (1 << 0)	/* Fixed (on-card) PCI memory */
-#define TTM_MEMTYPE_FLAG_MAPPABLE      (1 << 1)	/* Memory mappable */
-#define TTM_MEMTYPE_FLAG_CMA           (1 << 3)	/* Can't map aperture */
-
-struct ttm_mem_type_manager;
-
-struct ttm_mem_type_manager_func {
-	/**
-	 * struct ttm_mem_type_manager member init
-	 *
-	 * @man: Pointer to a memory type manager.
-	 * @p_size: Implementation dependent, but typically the size of the
-	 * range to be managed in pages.
-	 *
-	 * Called to initialize a private range manager. The function is
-	 * expected to initialize the man::priv member.
-	 * Returns 0 on success, negative error code on failure.
-	 */
-	int  (*init)(struct ttm_mem_type_manager *man, unsigned long p_size);
-
-	/**
-	 * struct ttm_mem_type_manager member takedown
-	 *
-	 * @man: Pointer to a memory type manager.
-	 *
-	 * Called to undo the setup done in init. All allocated resources
-	 * should be freed.
-	 */
-	int  (*takedown)(struct ttm_mem_type_manager *man);
-
-	/**
-	 * struct ttm_mem_type_manager member get_node
-	 *
-	 * @man: Pointer to a memory type manager.
-	 * @bo: Pointer to the buffer object we're allocating space for.
-	 * @placement: Placement details.
-	 * @flags: Additional placement flags.
-	 * @mem: Pointer to a struct ttm_mem_reg to be filled in.
-	 *
-	 * This function should allocate space in the memory type managed
-	 * by @man. Placement details if
-	 * applicable are given by @placement. If successful,
-	 * @mem::mm_node should be set to a non-null value, and
-	 * @mem::start should be set to a value identifying the beginning
-	 * of the range allocated, and the function should return zero.
-	 * If the memory region accommodate the buffer object, @mem::mm_node
-	 * should be set to NULL, and the function should return 0.
-	 * If a system error occurred, preventing the request to be fulfilled,
-	 * the function should return a negative error code.
-	 *
-	 * Note that @mem::mm_node will only be dereferenced by
-	 * struct ttm_mem_type_manager functions and optionally by the driver,
-	 * which has knowledge of the underlying type.
-	 *
-	 * This function may not be called from within atomic context, so
-	 * an implementation can and must use either a mutex or a spinlock to
-	 * protect any data structures managing the space.
-	 */
-	int  (*get_node)(struct ttm_mem_type_manager *man,
-			 struct ttm_buffer_object *bo,
-			 const struct ttm_place *place,
-			 struct ttm_mem_reg *mem);
-
-	/**
-	 * struct ttm_mem_type_manager member put_node
-	 *
-	 * @man: Pointer to a memory type manager.
-	 * @mem: Pointer to a struct ttm_mem_reg to be filled in.
-	 *
-	 * This function frees memory type resources previously allocated
-	 * and that are identified by @mem::mm_node and @mem::start. May not
-	 * be called from within atomic context.
-	 */
-	void (*put_node)(struct ttm_mem_type_manager *man,
-			 struct ttm_mem_reg *mem);
-
-	/**
-	 * struct ttm_mem_type_manager member debug
-	 *
-	 * @man: Pointer to a memory type manager.
-	 * @printer: Prefix to be used in printout to identify the caller.
-	 *
-	 * This function is called to print out the state of the memory
-	 * type manager to aid debugging of out-of-memory conditions.
-	 * It may not be called from within atomic context.
-	 */
-	void (*debug)(struct ttm_mem_type_manager *man,
-		      struct drm_printer *printer);
-};
-
-/**
- * struct ttm_mem_type_manager
- *
- * @has_type: The memory type has been initialized.
- * @use_type: The memory type is enabled.
- * @flags: TTM_MEMTYPE_XX flags identifying the traits of the memory
- * managed by this memory type.
- * @gpu_offset: If used, the GPU offset of the first managed page of
- * fixed memory or the first managed location in an aperture.
- * @size: Size of the managed region.
- * @available_caching: A mask of available caching types, TTM_PL_FLAG_XX,
- * as defined in ttm_placement_common.h
- * @default_caching: The default caching policy used for a buffer object
- * placed in this memory type if the user doesn't provide one.
- * @func: structure pointer implementing the range manager. See above
- * @priv: Driver private closure for @func.
- * @io_reserve_mutex: Mutex optionally protecting shared io_reserve structures
- * @use_io_reserve_lru: Use an lru list to try to unreserve io_mem_regions
- * reserved by the TTM vm system.
- * @io_reserve_lru: Optional lru list for unreserving io mem regions.
- * @io_reserve_fastpath: Only use bdev::driver::io_mem_reserve to obtain
- * @move_lock: lock for move fence
- * static information. bdev::driver::io_mem_free is never used.
- * @lru: The lru list for this memory type.
- * @move: The fence of the last pipelined move operation.
- *
- * This structure is used to identify and manage memory types for a device.
- * It's set up by the ttm_bo_driver::init_mem_type method.
- */
-
-
-
-struct ttm_mem_type_manager {
-	struct ttm_bo_device *bdev;
-
-	/*
-	 * No protection. Constant from start.
-	 */
-
-	bool has_type;
-	bool use_type;
-	uint32_t flags;
-	uint64_t gpu_offset; /* GPU address space is independent of CPU word size */
-	uint64_t size;
-	uint32_t available_caching;
-	uint32_t default_caching;
-	const struct ttm_mem_type_manager_func *func;
-	void *priv;
-	struct mutex io_reserve_mutex;
-	bool use_io_reserve_lru;
-	bool io_reserve_fastpath;
-	spinlock_t move_lock;
-
-	/*
-	 * Protected by @io_reserve_mutex:
-	 */
-
-	struct list_head io_reserve_lru;
-
-	/*
-	 * Protected by the global->lru_lock.
-	 */
-
-	struct list_head lru[TTM_MAX_BO_PRIORITY];
-
-	/*
-	 * Protected by @move_lock.
-	 */
-	struct dma_fence *move;
-};
-
-/**
- * struct ttm_bo_driver
- *
- * @create_ttm_backend_entry: Callback to create a struct ttm_backend.
- * @invalidate_caches: Callback to invalidate read caches when a buffer object
- * has been evicted.
- * @init_mem_type: Callback to initialize a struct ttm_mem_type_manager
- * structure.
- * @evict_flags: Callback to obtain placement flags when a buffer is evicted.
- * @move: Callback for a driver to hook in accelerated functions to
- * move a buffer.
- * If set to NULL, a potentially slow memcpy() move is used.
- */
-
-struct ttm_bo_driver {
-	/**
-	 * ttm_tt_create
-	 *
-	 * @bo: The buffer object to create the ttm for.
-	 * @page_flags: Page flags as identified by TTM_PAGE_FLAG_XX flags.
-	 *
-	 * Create a struct ttm_tt to back data with system memory pages.
-	 * No pages are actually allocated.
-	 * Returns:
-	 * NULL: Out of memory.
-	 */
-	struct ttm_tt *(*ttm_tt_create)(struct ttm_buffer_object *bo,
-					uint32_t page_flags);
-
-	/**
-	 * ttm_tt_populate
-	 *
-	 * @ttm: The struct ttm_tt to contain the backing pages.
-	 *
-	 * Allocate all backing pages
-	 * Returns:
-	 * -ENOMEM: Out of memory.
-	 */
-	int (*ttm_tt_populate)(struct ttm_tt *ttm,
-			struct ttm_operation_ctx *ctx);
-
-	/**
-	 * ttm_tt_unpopulate
-	 *
-	 * @ttm: The struct ttm_tt to contain the backing pages.
-	 *
-	 * Free all backing page
-	 */
-	void (*ttm_tt_unpopulate)(struct ttm_tt *ttm);
-
-	/**
-	 * struct ttm_bo_driver member invalidate_caches
-	 *
-	 * @bdev: the buffer object device.
-	 * @flags: new placement of the rebound buffer object.
-	 *
-	 * A previosly evicted buffer has been rebound in a
-	 * potentially new location. Tell the driver that it might
-	 * consider invalidating read (texture) caches on the next command
-	 * submission as a consequence.
-	 */
-
-	int (*invalidate_caches)(struct ttm_bo_device *bdev, uint32_t flags);
-	int (*init_mem_type)(struct ttm_bo_device *bdev, uint32_t type,
-			     struct ttm_mem_type_manager *man);
-
-	/**
-	 * struct ttm_bo_driver member eviction_valuable
-	 *
-	 * @bo: the buffer object to be evicted
-	 * @place: placement we need room for
-	 *
-	 * Check with the driver if it is valuable to evict a BO to make room
-	 * for a certain placement.
-	 */
-	bool (*eviction_valuable)(struct ttm_buffer_object *bo,
-				  const struct ttm_place *place);
-	/**
-	 * struct ttm_bo_driver member evict_flags:
-	 *
-	 * @bo: the buffer object to be evicted
-	 *
-	 * Return the bo flags for a buffer which is not mapped to the hardware.
-	 * These will be placed in proposed_flags so that when the move is
-	 * finished, they'll end up in bo->mem.flags
-	 */
-
-	void (*evict_flags)(struct ttm_buffer_object *bo,
-			    struct ttm_placement *placement);
-
-	/**
-	 * struct ttm_bo_driver member move:
-	 *
-	 * @bo: the buffer to move
-	 * @evict: whether this motion is evicting the buffer from
-	 * the graphics address space
-	 * @ctx: context for this move with parameters
-	 * @new_mem: the new memory region receiving the buffer
-	 *
-	 * Move a buffer between two memory regions.
-	 */
-	int (*move)(struct ttm_buffer_object *bo, bool evict,
-		    struct ttm_operation_ctx *ctx,
-		    struct ttm_mem_reg *new_mem);
-
-	/**
-	 * struct ttm_bo_driver_member verify_access
-	 *
-	 * @bo: Pointer to a buffer object.
-	 * @filp: Pointer to a struct file trying to access the object.
-	 *
-	 * Called from the map / write / read methods to verify that the
-	 * caller is permitted to access the buffer object.
-	 * This member may be set to NULL, which will refuse this kind of
-	 * access for all buffer objects.
-	 * This function should return 0 if access is granted, -EPERM otherwise.
-	 */
-	int (*verify_access)(struct ttm_buffer_object *bo,
-			     struct file *filp);
-
-	/**
-	 * Hook to notify driver about a driver move so it
-	 * can do tiling things and book-keeping.
-	 *
-	 * @evict: whether this move is evicting the buffer from the graphics
-	 * address space
-	 */
-	void (*move_notify)(struct ttm_buffer_object *bo,
-			    bool evict,
-			    struct ttm_mem_reg *new_mem);
-	/* notify the driver we are taking a fault on this BO
-	 * and have reserved it */
-	int (*fault_reserve_notify)(struct ttm_buffer_object *bo);
-
-	/**
-	 * notify the driver that we're about to swap out this bo
-	 */
-	void (*swap_notify)(struct ttm_buffer_object *bo);
-
-	/**
-	 * Driver callback on when mapping io memory (for bo_move_memcpy
-	 * for instance). TTM will take care to call io_mem_free whenever
-	 * the mapping is not use anymore. io_mem_reserve & io_mem_free
-	 * are balanced.
-	 */
-	int (*io_mem_reserve)(struct ttm_bo_device *bdev,
-			      struct ttm_mem_reg *mem);
-	void (*io_mem_free)(struct ttm_bo_device *bdev,
-			    struct ttm_mem_reg *mem);
-
-	/**
-	 * Return the pfn for a given page_offset inside the BO.
-	 *
-	 * @bo: the BO to look up the pfn for
-	 * @page_offset: the offset to look up
-	 */
-	unsigned long (*io_mem_pfn)(struct ttm_buffer_object *bo,
-				    unsigned long page_offset);
-
-	/**
-	 * Read/write memory buffers for ptrace access
-	 *
-	 * @bo: the BO to access
-	 * @offset: the offset from the start of the BO
-	 * @buf: pointer to source/destination buffer
-	 * @len: number of bytes to copy
-	 * @write: whether to read (0) from or write (non-0) to BO
-	 *
-	 * If successful, this function should return the number of
-	 * bytes copied, -EIO otherwise. If the number of bytes
-	 * returned is < len, the function may be called again with
-	 * the remainder of the buffer to copy.
-	 */
-	int (*access_memory)(struct ttm_buffer_object *bo, unsigned long offset,
-			     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
-	 *
-	 * Gives the driver a chance to do any cleanup, including
-	 * adding fences that may force a delayed delete
-	 */
-	void (*release_notify)(struct ttm_buffer_object *bo);
-};
-
-/**
- * struct ttm_bo_global - Buffer object driver global data.
- *
- * @mem_glob: Pointer to a struct ttm_mem_global object for accounting.
- * @dummy_read_page: Pointer to a dummy page used for mapping requests
- * of unpopulated pages.
- * @shrink: A shrink callback object used for buffer object swap.
- * @device_list_mutex: Mutex protecting the device list.
- * This mutex is held while traversing the device list for pm options.
- * @lru_lock: Spinlock protecting the bo subsystem lru lists.
- * @device_list: List of buffer object devices.
- * @swap_lru: Lru list of buffer objects used for swapping.
- */
-
-extern struct ttm_bo_global {
-
-	/**
-	 * Constant after init.
-	 */
-
-	struct kobject kobj;
-	struct page *dummy_read_page;
-	spinlock_t lru_lock;
-
-	/**
-	 * Protected by ttm_global_mutex.
-	 */
-	struct list_head device_list;
-
-	/**
-	 * Protected by the lru_lock.
-	 */
-	struct list_head swap_lru[TTM_MAX_BO_PRIORITY];
-
-	/**
-	 * Internal protection.
-	 */
-	atomic_t bo_count;
-} ttm_bo_glob;
-
-
-#define TTM_NUM_MEM_TYPES 8
-
-/**
- * struct ttm_bo_device - Buffer object driver device-specific data.
- *
- * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver.
- * @man: An array of mem_type_managers.
- * @vma_manager: Address space manager (pointer)
- * lru_lock: Spinlock that protects the buffer+device lru lists and
- * ddestroy lists.
- * @dev_mapping: A pointer to the struct address_space representing the
- * device address space.
- * @wq: Work queue structure for the delayed delete workqueue.
- * @no_retry: Don't retry allocation if it fails
- *
- */
-
-struct ttm_bo_device {
-
-	/*
-	 * Constant after bo device init / atomic.
-	 */
-	struct list_head device_list;
-	struct ttm_bo_driver *driver;
-	struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES];
-
-	/*
-	 * Protected by internal locks.
-	 */
-	struct drm_vma_offset_manager *vma_manager;
-
-	/*
-	 * Protected by the global:lru lock.
-	 */
-	struct list_head ddestroy;
-
-	/*
-	 * Protected by load / firstopen / lastclose /unload sync.
-	 */
-
-	struct address_space *dev_mapping;
-
-	/*
-	 * Internal protection.
-	 */
-
-	struct delayed_work wq;
-
-	bool need_dma32;
-
-	bool no_retry;
-};
-
-/**
- * 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];
-	struct ttm_lru_bulk_move_pos swap[TTM_MAX_BO_PRIORITY];
-};
-
-/**
- * ttm_flag_masked
- *
- * @old: Pointer to the result and original value.
- * @new: New value of bits.
- * @mask: Mask of bits to change.
- *
- * Convenience function to change a number of bits identified by a mask.
- */
-
-static inline uint32_t
-ttm_flag_masked(uint32_t *old, uint32_t new, uint32_t mask)
-{
-	*old ^= (*old ^ new) & mask;
-	return *old;
-}
+#include "ttm_pool.h"
 
 /*
  * ttm_bo.c
  */
 
 /**
- * ttm_mem_reg_is_pci
- *
- * @bdev: Pointer to a struct ttm_bo_device.
- * @mem: A valid struct ttm_mem_reg.
- *
- * Returns true if the memory described by @mem is PCI memory,
- * false otherwise.
- */
-bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
-
-/**
  * ttm_bo_mem_space
  *
  * @bo: Pointer to a struct ttm_buffer_object. the data of which
  * we want to allocate space for.
  * @proposed_placement: Proposed new placement for the buffer object.
- * @mem: A struct ttm_mem_reg.
+ * @mem: A struct ttm_resource.
  * @interruptible: Sleep interruptible when sliping.
  * @no_wait_gpu: Return immediately if the GPU is busy.
  *
@@ -577,37 +70,9 @@ bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
  */
 int ttm_bo_mem_space(struct ttm_buffer_object *bo,
 		     struct ttm_placement *placement,
-		     struct ttm_mem_reg *mem,
+		     struct ttm_resource **mem,
 		     struct ttm_operation_ctx *ctx);
 
-void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem);
-void ttm_bo_mem_put_locked(struct ttm_buffer_object *bo,
-			   struct ttm_mem_reg *mem);
-
-int ttm_bo_device_release(struct ttm_bo_device *bdev);
-
-/**
- * ttm_bo_device_init
- *
- * @bdev: A pointer to a struct ttm_bo_device to initialize.
- * @glob: A pointer to an initialized struct ttm_bo_global.
- * @driver: A pointer to a struct ttm_bo_driver set up by the caller.
- * @mapping: The address space to use for this bo.
- * @vma_manager: A pointer to a vma manager.
- * @file_page_offset: Offset into the device address space that is available
- * for buffer data. This ensures compatibility with other users of the
- * address space.
- *
- * Initializes a struct ttm_bo_device:
- * Returns:
- * !0: Failure.
- */
-int ttm_bo_device_init(struct ttm_bo_device *bdev,
-		       struct ttm_bo_driver *driver,
-		       struct address_space *mapping,
-		       struct drm_vma_offset_manager *vma_manager,
-		       bool need_dma32);
-
 /**
  * ttm_bo_unmap_virtual
  *
@@ -616,45 +81,32 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev,
 void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo);
 
 /**
- * ttm_bo_unmap_virtual
- *
- * @bo: tear down the virtual mappings for this BO
- *
- * The caller must take ttm_mem_io_lock before calling this function.
- */
-void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo);
-
-int ttm_mem_io_reserve_vm(struct ttm_buffer_object *bo);
-void ttm_mem_io_free_vm(struct ttm_buffer_object *bo);
-int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible);
-void ttm_mem_io_unlock(struct ttm_mem_type_manager *man);
-
-/**
- * __ttm_bo_reserve:
+ * ttm_bo_reserve:
  *
  * @bo: A pointer to a struct ttm_buffer_object.
  * @interruptible: Sleep interruptible if waiting.
  * @no_wait: Don't sleep while trying to reserve, rather return -EBUSY.
  * @ticket: ticket used to acquire the ww_mutex.
  *
- * Will not remove reserved buffers from the lru lists.
- * Otherwise identical to ttm_bo_reserve.
+ * Locks a buffer object for validation. (Or prevents other processes from
+ * locking it for validation), while taking a number of measures to prevent
+ * deadlocks.
  *
  * Returns:
  * -EDEADLK: The reservation may cause a deadlock.
  * Release all buffer reservations, wait for @bo to become unreserved and
- * try again. (only if use_sequence == 1).
+ * try again.
  * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
  * a signal. Release all buffer reservations and return to user-space.
  * -EBUSY: The function needed to sleep, but @no_wait was true
  * -EALREADY: Bo already reserved using @ticket. This error code will only
  * be returned if @use_ticket is set to true.
  */
-static inline int __ttm_bo_reserve(struct ttm_buffer_object *bo,
-				   bool interruptible, bool no_wait,
-				   struct ww_acquire_ctx *ticket)
+static inline int ttm_bo_reserve(struct ttm_buffer_object *bo,
+				 bool interruptible, bool no_wait,
+				 struct ww_acquire_ctx *ticket)
 {
-	int ret = 0;
+	int ret;
 
 	if (no_wait) {
 		bool success;
@@ -675,59 +127,6 @@ static inline int __ttm_bo_reserve(struct ttm_buffer_object *bo,
 }
 
 /**
- * ttm_bo_reserve:
- *
- * @bo: A pointer to a struct ttm_buffer_object.
- * @interruptible: Sleep interruptible if waiting.
- * @no_wait: Don't sleep while trying to reserve, rather return -EBUSY.
- * @ticket: ticket used to acquire the ww_mutex.
- *
- * Locks a buffer object for validation. (Or prevents other processes from
- * locking it for validation) and removes it from lru lists, while taking
- * a number of measures to prevent deadlocks.
- *
- * Deadlocks may occur when two processes try to reserve multiple buffers in
- * different order, either by will or as a result of a buffer being evicted
- * to make room for a buffer already reserved. (Buffers are reserved before
- * they are evicted). The following algorithm prevents such deadlocks from
- * occurring:
- * Processes attempting to reserve multiple buffers other than for eviction,
- * (typically execbuf), should first obtain a unique 32-bit
- * validation sequence number,
- * and call this function with @use_ticket == 1 and @ticket->stamp == the unique
- * sequence number. If upon call of this function, the buffer object is already
- * reserved, the validation sequence is checked against the validation
- * sequence of the process currently reserving the buffer,
- * and if the current validation sequence is greater than that of the process
- * holding the reservation, the function returns -EDEADLK. Otherwise it sleeps
- * waiting for the buffer to become unreserved, after which it retries
- * reserving.
- * The caller should, when receiving an -EDEADLK error
- * release all its buffer reservations, wait for @bo to become unreserved, and
- * then rerun the validation with the same validation sequence. This procedure
- * will always guarantee that the process with the lowest validation sequence
- * will eventually succeed, preventing both deadlocks and starvation.
- *
- * Returns:
- * -EDEADLK: The reservation may cause a deadlock.
- * Release all buffer reservations, wait for @bo to become unreserved and
- * try again. (only if use_sequence == 1).
- * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
- * a signal. Release all buffer reservations and return to user-space.
- * -EBUSY: The function needed to sleep, but @no_wait was true
- * -EALREADY: Bo already reserved using @ticket. This error code will only
- * be returned if @use_ticket is set to true.
- */
-static inline int ttm_bo_reserve(struct ttm_buffer_object *bo,
-				 bool interruptible, bool no_wait,
-				 struct ww_acquire_ctx *ticket)
-{
-	WARN_ON(!kref_read(&bo->kref));
-
-	return __ttm_bo_reserve(bo, interruptible, no_wait, ticket);
-}
-
-/**
  * ttm_bo_reserve_slowpath:
  * @bo: A pointer to a struct ttm_buffer_object.
  * @interruptible: Sleep interruptible if waiting.
@@ -741,20 +140,44 @@ static inline int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo,
 					  bool interruptible,
 					  struct ww_acquire_ctx *ticket)
 {
-	int ret = 0;
-
-	WARN_ON(!kref_read(&bo->kref));
+	if (interruptible) {
+		int ret = dma_resv_lock_slow_interruptible(bo->base.resv,
+							   ticket);
+		if (ret == -EINTR)
+			ret = -ERESTARTSYS;
+		return ret;
+	}
+	dma_resv_lock_slow(bo->base.resv, ticket);
+	return 0;
+}
 
-	if (interruptible)
-		ret = dma_resv_lock_slow_interruptible(bo->base.resv,
-								 ticket);
-	else
-		dma_resv_lock_slow(bo->base.resv, ticket);
+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);
+	spin_unlock(&bo->bdev->lru_lock);
+}
 
-	if (ret == -EINTR)
-		ret = -ERESTARTSYS;
+static inline void ttm_bo_assign_mem(struct ttm_buffer_object *bo,
+				     struct ttm_resource *new_mem)
+{
+	WARN_ON(bo->resource);
+	bo->resource = new_mem;
+}
 
-	return ret;
+/**
+ * ttm_bo_move_null = assign memory for a buffer object.
+ * @bo: The bo to assign the memory to
+ * @new_mem: The memory to be assigned.
+ *
+ * Assign the memory from new_mem to the memory of the buffer object bo.
+ */
+static inline void ttm_bo_move_null(struct ttm_buffer_object *bo,
+				    struct ttm_resource *new_mem)
+{
+	ttm_resource_free(bo, &bo->resource);
+	ttm_bo_assign_mem(bo, new_mem);
 }
 
 /**
@@ -766,41 +189,17 @@ static inline int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo,
  */
 static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo)
 {
-	spin_lock(&ttm_bo_glob.lru_lock);
-	ttm_bo_move_to_lru_tail(bo, NULL);
-	spin_unlock(&ttm_bo_glob.lru_lock);
+	ttm_bo_move_to_lru_tail_unlocked(bo);
 	dma_resv_unlock(bo->base.resv);
 }
 
 /*
  * ttm_bo_util.c
  */
-
-int ttm_mem_io_reserve(struct ttm_bo_device *bdev,
-		       struct ttm_mem_reg *mem);
-void ttm_mem_io_free(struct ttm_bo_device *bdev,
-		     struct ttm_mem_reg *mem);
-/**
- * ttm_bo_move_ttm
- *
- * @bo: A pointer to a struct ttm_buffer_object.
- * @interruptible: Sleep interruptible if waiting.
- * @no_wait_gpu: Return immediately if the GPU is busy.
- * @new_mem: struct ttm_mem_reg indicating where to move.
- *
- * Optimized move function for a buffer object with both old and
- * new placement backed by a TTM. The function will, if successful,
- * free any old aperture space, and set (@new_mem)->mm_node to NULL,
- * and update the (@bo)->mem placement flags. If unsuccessful, the old
- * data remains untouched, and it's up to the caller to free the
- * memory space indicated by @new_mem.
- * Returns:
- * !0: Failure.
- */
-
-int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
-		    struct ttm_operation_ctx *ctx,
-		    struct ttm_mem_reg *new_mem);
+int ttm_mem_io_reserve(struct ttm_device *bdev,
+		       struct ttm_resource *mem);
+void ttm_mem_io_free(struct ttm_device *bdev,
+		     struct ttm_resource *mem);
 
 /**
  * ttm_bo_move_memcpy
@@ -808,7 +207,7 @@ int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
  * @bo: A pointer to a struct ttm_buffer_object.
  * @interruptible: Sleep interruptible if waiting.
  * @no_wait_gpu: Return immediately if the GPU is busy.
- * @new_mem: struct ttm_mem_reg indicating where to move.
+ * @new_mem: struct ttm_resource indicating where to move.
  *
  * Fallback move function for a mappable buffer object in mappable memory.
  * The function will, if successful,
@@ -822,16 +221,7 @@ int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
 
 int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
 		       struct ttm_operation_ctx *ctx,
-		       struct ttm_mem_reg *new_mem);
-
-/**
- * ttm_bo_free_old_node
- *
- * @bo: A pointer to a struct ttm_buffer_object.
- *
- * Utility function to free an old placement after a successful move.
- */
-void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
+		       struct ttm_resource *new_mem);
 
 /**
  * ttm_bo_move_accel_cleanup.
@@ -839,7 +229,8 @@ void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
  * @bo: A pointer to a struct ttm_buffer_object.
  * @fence: A fence object that signals when moving is complete.
  * @evict: This is an evict move. Don't return until the buffer is idle.
- * @new_mem: struct ttm_mem_reg indicating where to move.
+ * @pipeline: evictions are to be pipelined.
+ * @new_mem: struct ttm_resource indicating where to move.
  *
  * Accelerated move function to be called when an accelerated move
  * has been scheduled. The function will create a new temporary buffer object
@@ -850,22 +241,20 @@ void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
  */
 int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
 			      struct dma_fence *fence, bool evict,
-			      struct ttm_mem_reg *new_mem);
+			      bool pipeline,
+			      struct ttm_resource *new_mem);
 
 /**
- * ttm_bo_pipeline_move.
+ * ttm_bo_move_sync_cleanup.
  *
  * @bo: A pointer to a struct ttm_buffer_object.
- * @fence: A fence object that signals when moving is complete.
- * @evict: This is an evict move. Don't return until the buffer is idle.
- * @new_mem: struct ttm_mem_reg indicating where to move.
+ * @new_mem: struct ttm_resource indicating where to move.
  *
- * Function for pipelining accelerated moves. Either free the memory
- * immediately or hang it on a temporary buffer object.
+ * 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.
  */
-int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
-			 struct dma_fence *fence, bool evict,
-			 struct ttm_mem_reg *new_mem);
+void ttm_bo_move_sync_cleanup(struct ttm_buffer_object *bo,
+			      struct ttm_resource *new_mem);
 
 /**
  * ttm_bo_pipeline_gutting.
@@ -879,14 +268,36 @@ int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo);
 /**
  * ttm_io_prot
  *
- * @c_state: Caching state.
+ * bo: ttm buffer object
+ * res: ttm resource object
  * @tmp: Page protection flag for a normal, cached mapping.
  *
  * Utility function that returns the pgprot_t that should be used for
  * setting up a PTE with the caching model indicated by @c_state.
  */
-pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp);
+pgprot_t ttm_io_prot(struct ttm_buffer_object *bo, struct ttm_resource *res,
+		     pgprot_t tmp);
 
-extern const struct ttm_mem_type_manager_func ttm_bo_manager_func;
+/**
+ * ttm_bo_tt_bind
+ *
+ * Bind the object tt to a memory resource.
+ */
+int ttm_bo_tt_bind(struct ttm_buffer_object *bo, struct ttm_resource *mem);
 
+/**
+ * ttm_bo_tt_destroy.
+ */
+void ttm_bo_tt_destroy(struct ttm_buffer_object *bo);
+
+void ttm_move_memcpy(bool clear,
+		     u32 num_pages,
+		     struct ttm_kmap_iter *dst_iter,
+		     struct ttm_kmap_iter *src_iter);
+
+struct ttm_kmap_iter *
+ttm_kmap_iter_iomap_init(struct ttm_kmap_iter_iomap *iter_io,
+			 struct io_mapping *iomap,
+			 struct sg_table *st,
+			 resource_size_t start);
 #endif