diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/ttm/Makefile | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/Makefile | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/ttm_lock.c (renamed from drivers/gpu/drm/ttm/ttm_lock.c) | 13 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/ttm_lock.h | 248 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/ttm_object.c (renamed from drivers/gpu/drm/ttm/ttm_object.c) | 20 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/ttm_object.h | 353 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_bo.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_prime.c | 2 |
10 files changed, 615 insertions, 36 deletions
diff --git a/drivers/gpu/drm/ttm/Makefile b/drivers/gpu/drm/ttm/Makefile index a60e560804e0..01fc670ce7a2 100644 --- a/drivers/gpu/drm/ttm/Makefile +++ b/drivers/gpu/drm/ttm/Makefile @@ -4,8 +4,8 @@ ttm-y := ttm_memory.o ttm_tt.o ttm_bo.o \ ttm_bo_util.o ttm_bo_vm.o ttm_module.o \ - ttm_object.o ttm_lock.o ttm_execbuf_util.o ttm_page_alloc.o \ - ttm_bo_manager.o ttm_page_alloc_dma.o + ttm_execbuf_util.o ttm_page_alloc.o ttm_bo_manager.o \ + ttm_page_alloc_dma.o ttm-$(CONFIG_AGP) += ttm_agp_backend.o obj-$(CONFIG_DRM_TTM) += ttm.o diff --git a/drivers/gpu/drm/vmwgfx/Makefile b/drivers/gpu/drm/vmwgfx/Makefile index 09b2aa08363e..22fdc07e03ad 100644 --- a/drivers/gpu/drm/vmwgfx/Makefile +++ b/drivers/gpu/drm/vmwgfx/Makefile @@ -7,6 +7,7 @@ vmwgfx-y := vmwgfx_execbuf.o vmwgfx_gmr.o vmwgfx_kms.o vmwgfx_drv.o \ vmwgfx_surface.o vmwgfx_prime.o vmwgfx_mob.o vmwgfx_shader.o \ vmwgfx_cmdbuf_res.o vmwgfx_cmdbuf.o vmwgfx_stdu.o \ vmwgfx_cotable.o vmwgfx_so.o vmwgfx_binding.o vmwgfx_msg.o \ - vmwgfx_simple_resource.o vmwgfx_va.o vmwgfx_blit.o + vmwgfx_simple_resource.o vmwgfx_va.o vmwgfx_blit.o \ + ttm_object.o ttm_lock.o obj-$(CONFIG_DRM_VMWGFX) := vmwgfx.o diff --git a/drivers/gpu/drm/ttm/ttm_lock.c b/drivers/gpu/drm/vmwgfx/ttm_lock.c index 20694b8a01ca..0d59f5a19e17 100644 --- a/drivers/gpu/drm/ttm/ttm_lock.c +++ b/drivers/gpu/drm/vmwgfx/ttm_lock.c @@ -29,13 +29,13 @@ * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> */ -#include <drm/ttm/ttm_lock.h> #include <drm/ttm/ttm_module.h> #include <linux/atomic.h> #include <linux/errno.h> #include <linux/wait.h> #include <linux/sched/signal.h> -#include <linux/module.h> +#include "ttm_lock.h" +#include "ttm_object.h" #define TTM_WRITE_LOCK_PENDING (1 << 0) #define TTM_VT_LOCK_PENDING (1 << 1) @@ -52,7 +52,6 @@ void ttm_lock_init(struct ttm_lock *lock) lock->kill_takers = false; lock->signal = SIGKILL; } -EXPORT_SYMBOL(ttm_lock_init); void ttm_read_unlock(struct ttm_lock *lock) { @@ -61,7 +60,6 @@ void ttm_read_unlock(struct ttm_lock *lock) wake_up_all(&lock->queue); spin_unlock(&lock->lock); } -EXPORT_SYMBOL(ttm_read_unlock); static bool __ttm_read_lock(struct ttm_lock *lock) { @@ -92,7 +90,6 @@ int ttm_read_lock(struct ttm_lock *lock, bool interruptible) wait_event(lock->queue, __ttm_read_lock(lock)); return ret; } -EXPORT_SYMBOL(ttm_read_lock); static bool __ttm_read_trylock(struct ttm_lock *lock, bool *locked) { @@ -144,7 +141,6 @@ void ttm_write_unlock(struct ttm_lock *lock) wake_up_all(&lock->queue); spin_unlock(&lock->lock); } -EXPORT_SYMBOL(ttm_write_unlock); static bool __ttm_write_lock(struct ttm_lock *lock) { @@ -185,7 +181,6 @@ int ttm_write_lock(struct ttm_lock *lock, bool interruptible) return ret; } -EXPORT_SYMBOL(ttm_write_lock); static int __ttm_vt_unlock(struct ttm_lock *lock) { @@ -262,14 +257,12 @@ int ttm_vt_lock(struct ttm_lock *lock, return ret; } -EXPORT_SYMBOL(ttm_vt_lock); int ttm_vt_unlock(struct ttm_lock *lock) { return ttm_ref_object_base_unref(lock->vt_holder, lock->base.hash.key, TTM_REF_USAGE); } -EXPORT_SYMBOL(ttm_vt_unlock); void ttm_suspend_unlock(struct ttm_lock *lock) { @@ -278,7 +271,6 @@ void ttm_suspend_unlock(struct ttm_lock *lock) wake_up_all(&lock->queue); spin_unlock(&lock->lock); } -EXPORT_SYMBOL(ttm_suspend_unlock); static bool __ttm_suspend_lock(struct ttm_lock *lock) { @@ -300,4 +292,3 @@ void ttm_suspend_lock(struct ttm_lock *lock) { wait_event(lock->queue, __ttm_suspend_lock(lock)); } -EXPORT_SYMBOL(ttm_suspend_lock); diff --git a/drivers/gpu/drm/vmwgfx/ttm_lock.h b/drivers/gpu/drm/vmwgfx/ttm_lock.h new file mode 100644 index 000000000000..0c3af9836863 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/ttm_lock.h @@ -0,0 +1,248 @@ +/************************************************************************** + * + * Copyright (c) 2007-2009 VMware, Inc., Palo Alto, CA., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ +/* + * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> + */ + +/** @file ttm_lock.h + * This file implements a simple replacement for the buffer manager use + * of the DRM heavyweight hardware lock. + * The lock is a read-write lock. Taking it in read mode and write mode + * is relatively fast, and intended for in-kernel use only. + * + * The vt mode is used only when there is a need to block all + * user-space processes from validating buffers. + * It's allowed to leave kernel space with the vt lock held. + * If a user-space process dies while having the vt-lock, + * it will be released during the file descriptor release. The vt lock + * excludes write lock and read lock. + * + * The suspend mode is used to lock out all TTM users when preparing for + * and executing suspend operations. + * + */ + +#ifndef _TTM_LOCK_H_ +#define _TTM_LOCK_H_ + +#include <linux/wait.h> +#include <linux/atomic.h> + +#include "ttm_object.h" + +/** + * struct ttm_lock + * + * @base: ttm base object used solely to release the lock if the client + * holding the lock dies. + * @queue: Queue for processes waiting for lock change-of-status. + * @lock: Spinlock protecting some lock members. + * @rw: Read-write lock counter. Protected by @lock. + * @flags: Lock state. Protected by @lock. + * @kill_takers: Boolean whether to kill takers of the lock. + * @signal: Signal to send when kill_takers is true. + */ + +struct ttm_lock { + struct ttm_base_object base; + wait_queue_head_t queue; + spinlock_t lock; + int32_t rw; + uint32_t flags; + bool kill_takers; + int signal; + struct ttm_object_file *vt_holder; +}; + + +/** + * ttm_lock_init + * + * @lock: Pointer to a struct ttm_lock + * Initializes the lock. + */ +extern void ttm_lock_init(struct ttm_lock *lock); + +/** + * ttm_read_unlock + * + * @lock: Pointer to a struct ttm_lock + * + * Releases a read lock. + */ +extern void ttm_read_unlock(struct ttm_lock *lock); + +/** + * ttm_read_lock + * + * @lock: Pointer to a struct ttm_lock + * @interruptible: Interruptible sleeping while waiting for a lock. + * + * Takes the lock in read mode. + * Returns: + * -ERESTARTSYS If interrupted by a signal and interruptible is true. + */ +extern int ttm_read_lock(struct ttm_lock *lock, bool interruptible); + +/** + * ttm_read_trylock + * + * @lock: Pointer to a struct ttm_lock + * @interruptible: Interruptible sleeping while waiting for a lock. + * + * Tries to take the lock in read mode. If the lock is already held + * in write mode, the function will return -EBUSY. If the lock is held + * in vt or suspend mode, the function will sleep until these modes + * are unlocked. + * + * Returns: + * -EBUSY The lock was already held in write mode. + * -ERESTARTSYS If interrupted by a signal and interruptible is true. + */ +extern int ttm_read_trylock(struct ttm_lock *lock, bool interruptible); + +/** + * ttm_write_unlock + * + * @lock: Pointer to a struct ttm_lock + * + * Releases a write lock. + */ +extern void ttm_write_unlock(struct ttm_lock *lock); + +/** + * ttm_write_lock + * + * @lock: Pointer to a struct ttm_lock + * @interruptible: Interruptible sleeping while waiting for a lock. + * + * Takes the lock in write mode. + * Returns: + * -ERESTARTSYS If interrupted by a signal and interruptible is true. + */ +extern int ttm_write_lock(struct ttm_lock *lock, bool interruptible); + +/** + * ttm_lock_downgrade + * + * @lock: Pointer to a struct ttm_lock + * + * Downgrades a write lock to a read lock. + */ +extern void ttm_lock_downgrade(struct ttm_lock *lock); + +/** + * ttm_suspend_lock + * + * @lock: Pointer to a struct ttm_lock + * + * Takes the lock in suspend mode. Excludes read and write mode. + */ +extern void ttm_suspend_lock(struct ttm_lock *lock); + +/** + * ttm_suspend_unlock + * + * @lock: Pointer to a struct ttm_lock + * + * Releases a suspend lock + */ +extern void ttm_suspend_unlock(struct ttm_lock *lock); + +/** + * ttm_vt_lock + * + * @lock: Pointer to a struct ttm_lock + * @interruptible: Interruptible sleeping while waiting for a lock. + * @tfile: Pointer to a struct ttm_object_file to register the lock with. + * + * Takes the lock in vt mode. + * Returns: + * -ERESTARTSYS If interrupted by a signal and interruptible is true. + * -ENOMEM: Out of memory when locking. + */ +extern int ttm_vt_lock(struct ttm_lock *lock, bool interruptible, + struct ttm_object_file *tfile); + +/** + * ttm_vt_unlock + * + * @lock: Pointer to a struct ttm_lock + * + * Releases a vt lock. + * Returns: + * -EINVAL If the lock was not held. + */ +extern int ttm_vt_unlock(struct ttm_lock *lock); + +/** + * ttm_write_unlock + * + * @lock: Pointer to a struct ttm_lock + * + * Releases a write lock. + */ +extern void ttm_write_unlock(struct ttm_lock *lock); + +/** + * ttm_write_lock + * + * @lock: Pointer to a struct ttm_lock + * @interruptible: Interruptible sleeping while waiting for a lock. + * + * Takes the lock in write mode. + * Returns: + * -ERESTARTSYS If interrupted by a signal and interruptible is true. + */ +extern int ttm_write_lock(struct ttm_lock *lock, bool interruptible); + +/** + * ttm_lock_set_kill + * + * @lock: Pointer to a struct ttm_lock + * @val: Boolean whether to kill processes taking the lock. + * @signal: Signal to send to the process taking the lock. + * + * The kill-when-taking-lock functionality is used to kill processes that keep + * on using the TTM functionality when its resources has been taken down, for + * example when the X server exits. A typical sequence would look like this: + * - X server takes lock in write mode. + * - ttm_lock_set_kill() is called with @val set to true. + * - As part of X server exit, TTM resources are taken down. + * - X server releases the lock on file release. + * - Another dri client wants to render, takes the lock and is killed. + * + */ +static inline void ttm_lock_set_kill(struct ttm_lock *lock, bool val, + int signal) +{ + lock->kill_takers = val; + if (val) + lock->signal = signal; +} + +#endif diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/vmwgfx/ttm_object.c index 74f1b1eb1f8e..190e2591e1f5 100644 --- a/drivers/gpu/drm/ttm/ttm_object.c +++ b/drivers/gpu/drm/vmwgfx/ttm_object.c @@ -59,13 +59,12 @@ #define pr_fmt(fmt) "[TTM] " fmt -#include <drm/ttm/ttm_object.h> #include <drm/ttm/ttm_module.h> #include <linux/list.h> #include <linux/spinlock.h> #include <linux/slab.h> -#include <linux/module.h> #include <linux/atomic.h> +#include "ttm_object.h" struct ttm_object_file { struct ttm_object_device *tdev; @@ -194,7 +193,6 @@ out_err1: out_err0: return ret; } -EXPORT_SYMBOL(ttm_base_object_init); static void ttm_release_base(struct kref *kref) { @@ -225,7 +223,6 @@ void ttm_base_object_unref(struct ttm_base_object **p_base) kref_put(&base->refcount, ttm_release_base); } -EXPORT_SYMBOL(ttm_base_object_unref); struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile, uint32_t key) @@ -247,7 +244,6 @@ struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file *tfile, return base; } -EXPORT_SYMBOL(ttm_base_object_lookup); struct ttm_base_object * ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint32_t key) @@ -269,7 +265,6 @@ ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint32_t key) return base; } -EXPORT_SYMBOL(ttm_base_object_lookup_for_ref); /** * ttm_ref_object_exists - Check whether a caller has a valid ref object @@ -315,7 +310,6 @@ bool ttm_ref_object_exists(struct ttm_object_file *tfile, rcu_read_unlock(); return false; } -EXPORT_SYMBOL(ttm_ref_object_exists); int ttm_ref_object_add(struct ttm_object_file *tfile, struct ttm_base_object *base, @@ -391,9 +385,9 @@ int ttm_ref_object_add(struct ttm_object_file *tfile, return ret; } -EXPORT_SYMBOL(ttm_ref_object_add); -static void ttm_ref_object_release(struct kref *kref) +static void __releases(tfile->lock) __acquires(tfile->lock) +ttm_ref_object_release(struct kref *kref) { struct ttm_ref_object *ref = container_of(kref, struct ttm_ref_object, kref); @@ -435,7 +429,6 @@ int ttm_ref_object_base_unref(struct ttm_object_file *tfile, spin_unlock(&tfile->lock); return 0; } -EXPORT_SYMBOL(ttm_ref_object_base_unref); void ttm_object_file_release(struct ttm_object_file **p_tfile) { @@ -464,7 +457,6 @@ void ttm_object_file_release(struct ttm_object_file **p_tfile) ttm_object_file_unref(&tfile); } -EXPORT_SYMBOL(ttm_object_file_release); struct ttm_object_file *ttm_object_file_init(struct ttm_object_device *tdev, unsigned int hash_order) @@ -499,7 +491,6 @@ out_err: return NULL; } -EXPORT_SYMBOL(ttm_object_file_init); struct ttm_object_device * ttm_object_device_init(struct ttm_mem_global *mem_glob, @@ -530,7 +521,6 @@ out_no_object_hash: kfree(tdev); return NULL; } -EXPORT_SYMBOL(ttm_object_device_init); void ttm_object_device_release(struct ttm_object_device **p_tdev) { @@ -542,7 +532,6 @@ void ttm_object_device_release(struct ttm_object_device **p_tdev) kfree(tdev); } -EXPORT_SYMBOL(ttm_object_device_release); /** * get_dma_buf_unless_doomed - get a dma_buf reference if possible. @@ -648,7 +637,6 @@ int ttm_prime_fd_to_handle(struct ttm_object_file *tfile, return ret; } -EXPORT_SYMBOL_GPL(ttm_prime_fd_to_handle); /** * ttm_prime_handle_to_fd - Return a dma_buf fd from a ttm prime object @@ -739,7 +727,6 @@ out_unref: ttm_base_object_unref(&base); return ret; } -EXPORT_SYMBOL_GPL(ttm_prime_handle_to_fd); /** * ttm_prime_object_init - Initialize a ttm_prime_object @@ -772,4 +759,3 @@ int ttm_prime_object_init(struct ttm_object_file *tfile, size_t size, ttm_prime_refcount_release, ref_obj_release); } -EXPORT_SYMBOL(ttm_prime_object_init); diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.h b/drivers/gpu/drm/vmwgfx/ttm_object.h new file mode 100644 index 000000000000..1c1b9cc118f8 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/ttm_object.h @@ -0,0 +1,353 @@ +/************************************************************************** + * + * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ +/* + * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> + */ +/** @file ttm_object.h + * + * Base- and reference object implementation for the various + * ttm objects. Implements reference counting, minimal security checks + * and release on file close. + */ + +#ifndef _TTM_OBJECT_H_ +#define _TTM_OBJECT_H_ + +#include <linux/list.h> +#include <drm/drm_hashtab.h> +#include <linux/kref.h> +#include <linux/rcupdate.h> +#include <linux/dma-buf.h> +#include <drm/ttm/ttm_memory.h> + +/** + * enum ttm_ref_type + * + * Describes what type of reference a ref object holds. + * + * TTM_REF_USAGE is a simple refcount on a base object. + * + * TTM_REF_SYNCCPU_READ is a SYNCCPU_READ reference on a + * buffer object. + * + * TTM_REF_SYNCCPU_WRITE is a SYNCCPU_WRITE reference on a + * buffer object. + * + */ + +enum ttm_ref_type { + TTM_REF_USAGE, + TTM_REF_SYNCCPU_READ, + TTM_REF_SYNCCPU_WRITE, + TTM_REF_NUM +}; + +/** + * enum ttm_object_type + * + * One entry per ttm object type. + * Device-specific types should use the + * ttm_driver_typex types. + */ + +enum ttm_object_type { + ttm_fence_type, + ttm_buffer_type, + ttm_lock_type, + ttm_prime_type, + ttm_driver_type0 = 256, + ttm_driver_type1, + ttm_driver_type2, + ttm_driver_type3, + ttm_driver_type4, + ttm_driver_type5 +}; + +struct ttm_object_file; +struct ttm_object_device; + +/** + * struct ttm_base_object + * + * @hash: hash entry for the per-device object hash. + * @type: derived type this object is base class for. + * @shareable: Other ttm_object_files can access this object. + * + * @tfile: Pointer to ttm_object_file of the creator. + * NULL if the object was not created by a user request. + * (kernel object). + * + * @refcount: Number of references to this object, not + * including the hash entry. A reference to a base object can + * only be held by a ref object. + * + * @refcount_release: A function to be called when there are + * no more references to this object. This function should + * destroy the object (or make sure destruction eventually happens), + * and when it is called, the object has + * already been taken out of the per-device hash. The parameter + * "base" should be set to NULL by the function. + * + * @ref_obj_release: A function to be called when a reference object + * with another ttm_ref_type than TTM_REF_USAGE is deleted. + * This function may, for example, release a lock held by a user-space + * process. + * + * This struct is intended to be used as a base struct for objects that + * are visible to user-space. It provides a global name, race-safe + * access and refcounting, minimal access contol and hooks for unref actions. + */ + +struct ttm_base_object { + struct rcu_head rhead; + struct drm_hash_item hash; + enum ttm_object_type object_type; + bool shareable; + struct ttm_object_file *tfile; + struct kref refcount; + void (*refcount_release) (struct ttm_base_object **base); + void (*ref_obj_release) (struct ttm_base_object *base, + enum ttm_ref_type ref_type); +}; + + +/** + * struct ttm_prime_object - Modified base object that is prime-aware + * + * @base: struct ttm_base_object that we derive from + * @mutex: Mutex protecting the @dma_buf member. + * @size: Size of the dma_buf associated with this object + * @real_type: Type of the underlying object. Needed since we're setting + * the value of @base::object_type to ttm_prime_type + * @dma_buf: Non ref-coutned pointer to a struct dma_buf created from this + * object. + * @refcount_release: The underlying object's release method. Needed since + * we set @base::refcount_release to our own release method. + */ + +struct ttm_prime_object { + struct ttm_base_object base; + struct mutex mutex; + size_t size; + enum ttm_object_type real_type; + struct dma_buf *dma_buf; + void (*refcount_release) (struct ttm_base_object **); +}; + +/** + * ttm_base_object_init + * + * @tfile: Pointer to a struct ttm_object_file. + * @base: The struct ttm_base_object to initialize. + * @shareable: This object is shareable with other applcations. + * (different @tfile pointers.) + * @type: The object type. + * @refcount_release: See the struct ttm_base_object description. + * @ref_obj_release: See the struct ttm_base_object description. + * + * Initializes a struct ttm_base_object. + */ + +extern int ttm_base_object_init(struct ttm_object_file *tfile, + struct ttm_base_object *base, + bool shareable, + enum ttm_object_type type, + void (*refcount_release) (struct ttm_base_object + **), + void (*ref_obj_release) (struct ttm_base_object + *, + enum ttm_ref_type + ref_type)); + +/** + * ttm_base_object_lookup + * + * @tfile: Pointer to a struct ttm_object_file. + * @key: Hash key + * + * Looks up a struct ttm_base_object with the key @key. + */ + +extern struct ttm_base_object *ttm_base_object_lookup(struct ttm_object_file + *tfile, uint32_t key); + +/** + * ttm_base_object_lookup_for_ref + * + * @tdev: Pointer to a struct ttm_object_device. + * @key: Hash key + * + * Looks up a struct ttm_base_object with the key @key. + * This function should only be used when the struct tfile associated with the + * caller doesn't yet have a reference to the base object. + */ + +extern struct ttm_base_object * +ttm_base_object_lookup_for_ref(struct ttm_object_device *tdev, uint32_t key); + +/** + * ttm_base_object_unref + * + * @p_base: Pointer to a pointer referencing a struct ttm_base_object. + * + * Decrements the base object refcount and clears the pointer pointed to by + * p_base. + */ + +extern void ttm_base_object_unref(struct ttm_base_object **p_base); + +/** + * ttm_ref_object_add. + * + * @tfile: A struct ttm_object_file representing the application owning the + * ref_object. + * @base: The base object to reference. + * @ref_type: The type of reference. + * @existed: Upon completion, indicates that an identical reference object + * already existed, and the refcount was upped on that object instead. + * @require_existed: Fail with -EPERM if an identical ref object didn't + * already exist. + * + * Checks that the base object is shareable and adds a ref object to it. + * + * Adding a ref object to a base object is basically like referencing the + * base object, but a user-space application holds the reference. When the + * file corresponding to @tfile is closed, all its reference objects are + * deleted. A reference object can have different types depending on what + * it's intended for. It can be refcounting to prevent object destruction, + * When user-space takes a lock, it can add a ref object to that lock to + * make sure the lock is released if the application dies. A ref object + * will hold a single reference on a base object. + */ +extern int ttm_ref_object_add(struct ttm_object_file *tfile, + struct ttm_base_object *base, + enum ttm_ref_type ref_type, bool *existed, + bool require_existed); + +extern bool ttm_ref_object_exists(struct ttm_object_file *tfile, + struct ttm_base_object *base); + +/** + * ttm_ref_object_base_unref + * + * @key: Key representing the base object. + * @ref_type: Ref type of the ref object to be dereferenced. + * + * Unreference a ref object with type @ref_type + * on the base object identified by @key. If there are no duplicate + * references, the ref object will be destroyed and the base object + * will be unreferenced. + */ +extern int ttm_ref_object_base_unref(struct ttm_object_file *tfile, + unsigned long key, + enum ttm_ref_type ref_type); + +/** + * ttm_object_file_init - initialize a struct ttm_object file + * + * @tdev: A struct ttm_object device this file is initialized on. + * @hash_order: Order of the hash table used to hold the reference objects. + * + * This is typically called by the file_ops::open function. + */ + +extern struct ttm_object_file *ttm_object_file_init(struct ttm_object_device + *tdev, + unsigned int hash_order); + +/** + * ttm_object_file_release - release data held by a ttm_object_file + * + * @p_tfile: Pointer to pointer to the ttm_object_file object to release. + * *p_tfile will be set to NULL by this function. + * + * Releases all data associated by a ttm_object_file. + * Typically called from file_ops::release. The caller must + * ensure that there are no concurrent users of tfile. + */ + +extern void ttm_object_file_release(struct ttm_object_file **p_tfile); + +/** + * ttm_object device init - initialize a struct ttm_object_device + * + * @mem_glob: struct ttm_mem_global for memory accounting. + * @hash_order: Order of hash table used to hash the base objects. + * @ops: DMA buf ops for prime objects of this device. + * + * This function is typically called on device initialization to prepare + * data structures needed for ttm base and ref objects. + */ + +extern struct ttm_object_device * +ttm_object_device_init(struct ttm_mem_global *mem_glob, + unsigned int hash_order, + const struct dma_buf_ops *ops); + +/** + * ttm_object_device_release - release data held by a ttm_object_device + * + * @p_tdev: Pointer to pointer to the ttm_object_device object to release. + * *p_tdev will be set to NULL by this function. + * + * Releases all data associated by a ttm_object_device. + * Typically called from driver::unload before the destruction of the + * device private data structure. + */ + +extern void ttm_object_device_release(struct ttm_object_device **p_tdev); + +#define ttm_base_object_kfree(__object, __base)\ + kfree_rcu(__object, __base.rhead) + +extern int ttm_prime_object_init(struct ttm_object_file *tfile, + size_t size, + struct ttm_prime_object *prime, + bool shareable, + enum ttm_object_type type, + void (*refcount_release) + (struct ttm_base_object **), + void (*ref_obj_release) + (struct ttm_base_object *, + enum ttm_ref_type ref_type)); + +static inline enum ttm_object_type +ttm_base_object_type(struct ttm_base_object *base) +{ + return (base->object_type == ttm_prime_type) ? + container_of(base, struct ttm_prime_object, base)->real_type : + base->object_type; +} +extern int ttm_prime_fd_to_handle(struct ttm_object_file *tfile, + int fd, u32 *handle); +extern int ttm_prime_handle_to_fd(struct ttm_object_file *tfile, + uint32_t handle, uint32_t flags, + int *prime_fd); + +#define ttm_prime_object_kfree(__obj, __prime) \ + kfree_rcu(__obj, __prime.base.rhead) +#endif diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c index 2dda03345761..36e84acee3ea 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c @@ -30,7 +30,7 @@ #include <drm/drmP.h> #include "vmwgfx_drv.h" -#include "drm/ttm/ttm_object.h" +#include "ttm_object.h" /** diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index bb6dbbe18835..d9c178e235b4 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -30,9 +30,9 @@ #include <drm/drmP.h> #include "vmwgfx_drv.h" #include "vmwgfx_binding.h" +#include "ttm_object.h" #include <drm/ttm/ttm_placement.h> #include <drm/ttm/ttm_bo_driver.h> -#include <drm/ttm/ttm_object.h> #include <drm/ttm/ttm_module.h> #include <linux/dma_remapping.h> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index 1abe21758b0d..1aa11c39f07f 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -35,11 +35,11 @@ #include <drm/drm_auth.h> #include <linux/suspend.h> #include <drm/ttm/ttm_bo_driver.h> -#include <drm/ttm/ttm_object.h> -#include <drm/ttm/ttm_lock.h> #include <drm/ttm/ttm_execbuf_util.h> #include <drm/ttm/ttm_module.h> #include "vmwgfx_fence.h" +#include "ttm_object.h" +#include "ttm_lock.h" #include <linux/sync_file.h> #define VMWGFX_DRIVER_NAME "vmwgfx" diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c index 0861c821a7fe..e420675e8db3 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c @@ -31,8 +31,8 @@ */ #include "vmwgfx_drv.h" +#include "ttm_object.h" #include <linux/dma-buf.h> -#include <drm/ttm/ttm_object.h> /* * DMA-BUF attach- and mapping methods. No need to implement |