From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt
---
kernel/include/drm/ttm/ttm_bo_driver.h | 587 ++++++++++++++++++++++------------------------------------
1 files changed, 220 insertions(+), 367 deletions(-)
diff --git a/kernel/include/drm/ttm/ttm_bo_driver.h b/kernel/include/drm/ttm/ttm_bo_driver.h
index 3234cc3..864afa8 100644
--- a/kernel/include/drm/ttm/ttm_bo_driver.h
+++ b/kernel/include/drm/ttm/ttm_bo_driver.h
@@ -31,12 +31,11 @@
#define _TTM_BO_DRIVER_H_
#include <drm/drm_mm.h>
-#include <drm/drm_global.h>
#include <drm/drm_vma_manager.h>
#include <linux/workqueue.h>
#include <linux/fs.h>
#include <linux/spinlock.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include "ttm_bo_api.h"
#include "ttm_memory.h"
@@ -44,177 +43,10 @@
#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.
@@ -245,8 +77,9 @@
* Returns:
* -ENOMEM: Out of memory.
*/
- int (*ttm_tt_populate)(struct ttm_tt *ttm,
- struct ttm_operation_ctx *ctx);
+ int (*ttm_tt_populate)(struct ttm_bo_device *bdev,
+ struct ttm_tt *ttm,
+ struct ttm_operation_ctx *ctx);
/**
* ttm_tt_unpopulate
@@ -255,23 +88,43 @@
*
* Free all backing page
*/
- void (*ttm_tt_unpopulate)(struct ttm_tt *ttm);
+ void (*ttm_tt_unpopulate)(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
/**
- * struct ttm_bo_driver member invalidate_caches
+ * ttm_tt_bind
*
- * @bdev: the buffer object device.
- * @flags: new placement of the rebound buffer object.
+ * @bdev: Pointer to a ttm device
+ * @ttm: Pointer to a struct ttm_tt.
+ * @bo_mem: Pointer to a struct ttm_resource describing the
+ * memory type and location for binding.
*
- * 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.
+ * Bind the backend pages into the aperture in the location
+ * indicated by @bo_mem. This function should be able to handle
+ * differences between aperture and system page sizes.
*/
+ int (*ttm_tt_bind)(struct ttm_bo_device *bdev, struct ttm_tt *ttm, struct ttm_resource *bo_mem);
- 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);
+ /**
+ * ttm_tt_unbind
+ *
+ * @bdev: Pointer to a ttm device
+ * @ttm: Pointer to a struct ttm_tt.
+ *
+ * Unbind previously bound backend pages. This function should be
+ * able to handle differences between aperture and system page sizes.
+ */
+ void (*ttm_tt_unbind)(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
+
+ /**
+ * ttm_tt_destroy
+ *
+ * @bdev: Pointer to a ttm device
+ * @ttm: Pointer to a struct ttm_tt.
+ *
+ * Destroy the backend. This will be call back from ttm_tt_destroy so
+ * don't call ttm_tt_destroy from the callback or infinite loop.
+ */
+ void (*ttm_tt_destroy)(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
/**
* struct ttm_bo_driver member eviction_valuable
@@ -310,7 +163,7 @@
*/
int (*move)(struct ttm_buffer_object *bo, bool evict,
struct ttm_operation_ctx *ctx,
- struct ttm_mem_reg *new_mem);
+ struct ttm_resource *new_mem);
/**
* struct ttm_bo_driver_member verify_access
@@ -336,7 +189,7 @@
*/
void (*move_notify)(struct ttm_buffer_object *bo,
bool evict,
- struct ttm_mem_reg *new_mem);
+ struct ttm_resource *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);
@@ -353,9 +206,9 @@
* are balanced.
*/
int (*io_mem_reserve)(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem);
+ struct ttm_resource *mem);
void (*io_mem_free)(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem);
+ struct ttm_resource *mem);
/**
* Return the pfn for a given page_offset inside the BO.
@@ -382,21 +235,30 @@
*/
int (*access_memory)(struct ttm_buffer_object *bo, unsigned long offset,
void *buf, int len, int write);
-};
-/**
- * struct ttm_bo_global_ref - Argument to initialize a struct ttm_bo_global.
- */
+ /**
+ * 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);
-struct ttm_bo_global_ref {
- struct drm_global_reference ref;
- struct ttm_mem_global *mem_glob;
+ /**
+ * 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.
@@ -407,20 +269,18 @@
* @swap_lru: Lru list of buffer objects used for swapping.
*/
-struct ttm_bo_global {
+extern struct ttm_bo_global {
/**
* Constant after init.
*/
struct kobject kobj;
- struct ttm_mem_global *mem_glob;
struct page *dummy_read_page;
- struct mutex device_list_mutex;
spinlock_t lru_lock;
/**
- * Protected by device_list_mutex.
+ * Protected by ttm_global_mutex.
*/
struct list_head device_list;
@@ -433,7 +293,7 @@
* Internal protection.
*/
atomic_t bo_count;
-};
+} ttm_bo_glob;
#define TTM_NUM_MEM_TYPES 8
@@ -442,8 +302,8 @@
* 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
+ * @man: An array of resource_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
@@ -459,14 +319,16 @@
* Constant after bo device init / atomic.
*/
struct list_head device_list;
- struct ttm_bo_global *glob;
struct ttm_bo_driver *driver;
- struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES];
-
+ /*
+ * access via ttm_manager_type.
+ */
+ struct ttm_resource_manager sysman;
+ struct ttm_resource_manager *man_drv[TTM_NUM_MEM_TYPES];
/*
* Protected by internal locks.
*/
- struct drm_vma_offset_manager vma_manager;
+ struct drm_vma_offset_manager *vma_manager;
/*
* Protected by the global:lru lock.
@@ -490,37 +352,50 @@
bool no_retry;
};
-/**
- * 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)
+static inline struct ttm_resource_manager *ttm_manager_type(struct ttm_bo_device *bdev,
+ int mem_type)
{
- *old ^= (*old ^ new) & mask;
- return *old;
+ return bdev->man_drv[mem_type];
}
+
+static inline void ttm_set_driver_manager(struct ttm_bo_device *bdev,
+ int type,
+ struct ttm_resource_manager *manager)
+{
+ bdev->man_drv[type] = manager;
+}
+
+/**
+ * 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_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
@@ -528,7 +403,7 @@
* @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.
*
@@ -543,15 +418,8 @@
*/
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);
-
-void ttm_bo_global_release(struct drm_global_reference *ref);
-int ttm_bo_global_init(struct drm_global_reference *ref);
int ttm_bo_device_release(struct ttm_bo_device *bdev);
@@ -562,6 +430,7 @@
* @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.
@@ -570,10 +439,11 @@
* Returns:
* !0: Failure.
*/
-int ttm_bo_device_init(struct ttm_bo_device *bdev, struct ttm_bo_global *glob,
+int ttm_bo_device_init(struct ttm_bo_device *bdev,
struct ttm_bo_driver *driver,
struct address_space *mapping,
- uint64_t file_page_offset, bool need_dma32);
+ struct drm_vma_offset_manager *vma_manager,
+ bool need_dma32);
/**
* ttm_bo_unmap_virtual
@@ -591,59 +461,6 @@
*/
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);
-
-void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo);
-void ttm_bo_add_to_lru(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.
- *
- * Will not remove reserved buffers from the lru lists.
- * Otherwise identical to ttm_bo_reserve.
- *
- * 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)
-{
- int ret = 0;
-
- if (no_wait) {
- bool success;
- if (WARN_ON(ticket))
- return -EBUSY;
-
- success = reservation_object_trylock(bo->resv);
- return success ? 0 : -EBUSY;
- }
-
- if (interruptible)
- ret = reservation_object_lock_interruptible(bo->resv, ticket);
- else
- ret = reservation_object_lock(bo->resv, ticket);
- if (ret == -EINTR)
- return -ERESTARTSYS;
- return ret;
-}
-
/**
* ttm_bo_reserve:
*
@@ -653,35 +470,13 @@
* @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.
+ * 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
@@ -692,14 +487,23 @@
bool interruptible, bool no_wait,
struct ww_acquire_ctx *ticket)
{
- int ret;
+ int ret = 0;
- WARN_ON(!kref_read(&bo->kref));
+ if (no_wait) {
+ bool success;
+ if (WARN_ON(ticket))
+ return -EBUSY;
- ret = __ttm_bo_reserve(bo, interruptible, no_wait, ticket);
- if (likely(ret == 0))
- ttm_bo_del_sub_from_lru(bo);
+ success = dma_resv_trylock(bo->base.resv);
+ return success ? 0 : -EBUSY;
+ }
+ if (interruptible)
+ ret = dma_resv_lock_interruptible(bo->base.resv, ticket);
+ else
+ ret = dma_resv_lock(bo->base.resv, ticket);
+ if (ret == -EINTR)
+ return -ERESTARTSYS;
return ret;
}
@@ -717,22 +521,45 @@
bool interruptible,
struct ww_acquire_ctx *ticket)
{
- int ret = 0;
+ 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;
+}
- WARN_ON(!kref_read(&bo->kref));
+static inline void ttm_bo_move_to_lru_tail_unlocked(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);
+}
- if (interruptible)
- ret = ww_mutex_lock_slow_interruptible(&bo->resv->lock,
- ticket);
- else
- ww_mutex_lock_slow(&bo->resv->lock, ticket);
+static inline void ttm_bo_assign_mem(struct ttm_buffer_object *bo,
+ struct ttm_resource *new_mem)
+{
+ bo->mem = *new_mem;
+ new_mem->mm_node = NULL;
+}
- if (likely(ret == 0))
- ttm_bo_del_sub_from_lru(bo);
- else if (ret == -EINTR)
- ret = -ERESTARTSYS;
+/**
+ * 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)
+{
+ struct ttm_resource *old_mem = &bo->mem;
- return ret;
+ WARN_ON(old_mem->mm_node != NULL);
+ ttm_bo_assign_mem(bo, new_mem);
}
/**
@@ -744,12 +571,8 @@
*/
static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo)
{
- if (!(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) {
- spin_lock(&bo->bdev->glob->lru_lock);
- ttm_bo_add_to_lru(bo);
- spin_unlock(&bo->bdev->glob->lru_lock);
- }
- reservation_object_unlock(bo->resv);
+ ttm_bo_move_to_lru_tail_unlocked(bo);
+ dma_resv_unlock(bo->base.resv);
}
/*
@@ -757,16 +580,16 @@
*/
int ttm_mem_io_reserve(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem);
+ struct ttm_resource *mem);
void ttm_mem_io_free(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem);
+ struct ttm_resource *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.
+ * @new_mem: struct ttm_resource 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,
@@ -780,7 +603,7 @@
int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
struct ttm_operation_ctx *ctx,
- struct ttm_mem_reg *new_mem);
+ struct ttm_resource *new_mem);
/**
* ttm_bo_move_memcpy
@@ -788,7 +611,7 @@
* @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,
@@ -802,7 +625,7 @@
int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
struct ttm_operation_ctx *ctx,
- struct ttm_mem_reg *new_mem);
+ struct ttm_resource *new_mem);
/**
* ttm_bo_free_old_node
@@ -819,7 +642,8 @@
* @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
@@ -830,29 +654,15 @@
*/
int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
struct dma_fence *fence, bool evict,
- struct ttm_mem_reg *new_mem);
-
-/**
- * ttm_bo_pipeline_move.
- *
- * @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.
- *
- * Function for pipelining accelerated moves. Either free the memory
- * immediately or hang it on a temporary buffer object.
- */
-int ttm_bo_pipeline_move(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_gutting.
*
* @bo: A pointer to a struct ttm_buffer_object.
*
- * Pipelined gutting a BO of it's backing store.
+ * Pipelined gutting a BO of its backing store.
*/
int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo);
@@ -867,6 +677,49 @@
*/
pgprot_t ttm_io_prot(uint32_t caching_flags, 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_bind
+ *
+ * Unbind the object tt from a memory resource.
+ */
+void ttm_bo_tt_unbind(struct ttm_buffer_object *bo);
+
+/**
+ * ttm_bo_tt_destroy.
+ */
+void ttm_bo_tt_destroy(struct ttm_buffer_object *bo);
+
+/**
+ * ttm_range_man_init
+ *
+ * @bdev: ttm device
+ * @type: memory manager type
+ * @use_tt: if the memory manager uses tt
+ * @p_size: size of area to be managed in pages.
+ *
+ * Initialise a generic range manager for the selected memory type.
+ * The range manager is installed for this device in the type slot.
+ */
+int ttm_range_man_init(struct ttm_bo_device *bdev,
+ unsigned type, bool use_tt,
+ unsigned long p_size);
+
+/**
+ * ttm_range_man_fini
+ *
+ * @bdev: ttm device
+ * @type: memory manager type
+ *
+ * Remove the generic range manager from a slot and tear it down.
+ */
+int ttm_range_man_fini(struct ttm_bo_device *bdev,
+ unsigned type);
#endif
--
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