# SPDX-License-Identifier: GPL-2.0-only
obj-y := dma-buf.o dma-fence.o dma-fence-array.o dma-fence-chain.o \
- reservation.o seqno-fence.o
+ dma-resv.o seqno-fence.o
obj-$(CONFIG_SYNC_FILE) += sync_file.o
obj-$(CONFIG_SW_SYNC) += sw_sync.o sync_debug.o
obj-$(CONFIG_UDMABUF) += udmabuf.o
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/poll.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <linux/mm.h>
#include <linux/mount.h>
#include <linux/pseudo_fs.h>
list_del(&dmabuf->list_node);
mutex_unlock(&db_list.lock);
- if (dmabuf->resv == (struct reservation_object *)&dmabuf[1])
- reservation_object_fini(dmabuf->resv);
+ if (dmabuf->resv == (struct dma_resv *)&dmabuf[1])
+ dma_resv_fini(dmabuf->resv);
module_put(dmabuf->owner);
kfree(dmabuf);
* To support cross-device and cross-driver synchronization of buffer access
* implicit fences (represented internally in the kernel with &struct fence) can
* be attached to a &dma_buf. The glue for that and a few related things are
- * provided in the &reservation_object structure.
+ * provided in the &dma_resv structure.
*
* Userspace can query the state of these implicitly tracked fences using poll()
* and related system calls:
static __poll_t dma_buf_poll(struct file *file, poll_table *poll)
{
struct dma_buf *dmabuf;
- struct reservation_object *resv;
- struct reservation_object_list *fobj;
+ struct dma_resv *resv;
+ struct dma_resv_list *fobj;
struct dma_fence *fence_excl;
__poll_t events;
unsigned shared_count;
return 0;
rcu_read_lock();
- reservation_object_fences(resv, &fence_excl, &fobj, &shared_count);
+ dma_resv_fences(resv, &fence_excl, &fobj, &shared_count);
if (fence_excl && (!(events & EPOLLOUT) || shared_count == 0)) {
struct dma_buf_poll_cb_t *dcb = &dmabuf->cb_excl;
__poll_t pevents = EPOLLIN;
struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
{
struct dma_buf *dmabuf;
- struct reservation_object *resv = exp_info->resv;
+ struct dma_resv *resv = exp_info->resv;
struct file *file;
size_t alloc_size = sizeof(struct dma_buf);
int ret;
if (!exp_info->resv)
- alloc_size += sizeof(struct reservation_object);
+ alloc_size += sizeof(struct dma_resv);
else
/* prevent &dma_buf[1] == dma_buf->resv */
alloc_size += 1;
dmabuf->cb_excl.active = dmabuf->cb_shared.active = 0;
if (!resv) {
- resv = (struct reservation_object *)&dmabuf[1];
- reservation_object_init(resv);
+ resv = (struct dma_resv *)&dmabuf[1];
+ dma_resv_init(resv);
}
dmabuf->resv = resv;
{
bool write = (direction == DMA_BIDIRECTIONAL ||
direction == DMA_TO_DEVICE);
- struct reservation_object *resv = dmabuf->resv;
+ struct dma_resv *resv = dmabuf->resv;
long ret;
/* Wait on any implicit rendering fences */
- ret = reservation_object_wait_timeout_rcu(resv, write, true,
+ ret = dma_resv_wait_timeout_rcu(resv, write, true,
MAX_SCHEDULE_TIMEOUT);
if (ret < 0)
return ret;
int ret;
struct dma_buf *buf_obj;
struct dma_buf_attachment *attach_obj;
- struct reservation_object *robj;
- struct reservation_object_list *fobj;
+ struct dma_resv *robj;
+ struct dma_resv_list *fobj;
struct dma_fence *fence;
int count = 0, attach_count, shared_count, i;
size_t size = 0;
robj = buf_obj->resv;
rcu_read_lock();
- reservation_object_fences(robj, &fence, &fobj, &shared_count);
+ dma_resv_fences(robj, &fence, &fobj, &shared_count);
rcu_read_unlock();
if (fence)
*
* - Then there's also implicit fencing, where the synchronization points are
* implicitly passed around as part of shared &dma_buf instances. Such
- * implicit fences are stored in &struct reservation_object through the
+ * implicit fences are stored in &struct dma_resv through the
* &dma_buf.resv pointer.
*/
--- /dev/null
+/*
+ * Copyright (C) 2012-2014 Canonical Ltd (Maarten Lankhorst)
+ *
+ * Based on bo.c which bears the following copyright notice,
+ * but is dual licensed:
+ *
+ * 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>
+ */
+
+#include <linux/dma-resv.h>
+#include <linux/export.h>
+
+/**
+ * DOC: Reservation Object Overview
+ *
+ * The reservation object provides a mechanism to manage shared and
+ * exclusive fences associated with a buffer. A reservation object
+ * can have attached one exclusive fence (normally associated with
+ * write operations) or N shared fences (read operations). The RCU
+ * mechanism is used to protect read access to fences from locked
+ * write-side updates.
+ */
+
+DEFINE_WD_CLASS(reservation_ww_class);
+EXPORT_SYMBOL(reservation_ww_class);
+
+/**
+ * dma_resv_list_alloc - allocate fence list
+ * @shared_max: number of fences we need space for
+ *
+ * Allocate a new dma_resv_list and make sure to correctly initialize
+ * shared_max.
+ */
+static struct dma_resv_list *dma_resv_list_alloc(unsigned int shared_max)
+{
+ struct dma_resv_list *list;
+
+ list = kmalloc(offsetof(typeof(*list), shared[shared_max]), GFP_KERNEL);
+ if (!list)
+ return NULL;
+
+ list->shared_max = (ksize(list) - offsetof(typeof(*list), shared)) /
+ sizeof(*list->shared);
+
+ return list;
+}
+
+/**
+ * dma_resv_list_free - free fence list
+ * @list: list to free
+ *
+ * Free a dma_resv_list and make sure to drop all references.
+ */
+static void dma_resv_list_free(struct dma_resv_list *list)
+{
+ unsigned int i;
+
+ if (!list)
+ return;
+
+ for (i = 0; i < list->shared_count; ++i)
+ dma_fence_put(rcu_dereference_protected(list->shared[i], true));
+
+ kfree_rcu(list, rcu);
+}
+
+/**
+ * dma_resv_init - initialize a reservation object
+ * @obj: the reservation object
+ */
+void dma_resv_init(struct dma_resv *obj)
+{
+ ww_mutex_init(&obj->lock, &reservation_ww_class);
+ RCU_INIT_POINTER(obj->fence, NULL);
+ RCU_INIT_POINTER(obj->fence_excl, NULL);
+}
+EXPORT_SYMBOL(dma_resv_init);
+
+/**
+ * dma_resv_fini - destroys a reservation object
+ * @obj: the reservation object
+ */
+void dma_resv_fini(struct dma_resv *obj)
+{
+ struct dma_resv_list *fobj;
+ struct dma_fence *excl;
+
+ /*
+ * This object should be dead and all references must have
+ * been released to it, so no need to be protected with rcu.
+ */
+ excl = rcu_dereference_protected(obj->fence_excl, 1);
+ if (excl)
+ dma_fence_put(excl);
+
+ fobj = rcu_dereference_protected(obj->fence, 1);
+ dma_resv_list_free(fobj);
+ ww_mutex_destroy(&obj->lock);
+}
+EXPORT_SYMBOL(dma_resv_fini);
+
+/**
+ * dma_resv_reserve_shared - Reserve space to add shared fences to
+ * a dma_resv.
+ * @obj: reservation object
+ * @num_fences: number of fences we want to add
+ *
+ * Should be called before dma_resv_add_shared_fence(). Must
+ * be called with obj->lock held.
+ *
+ * RETURNS
+ * Zero for success, or -errno
+ */
+int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences)
+{
+ struct dma_resv_list *old, *new;
+ unsigned int i, j, k, max;
+
+ dma_resv_assert_held(obj);
+
+ old = dma_resv_get_list(obj);
+
+ if (old && old->shared_max) {
+ if ((old->shared_count + num_fences) <= old->shared_max)
+ return 0;
+ else
+ max = max(old->shared_count + num_fences,
+ old->shared_max * 2);
+ } else {
+ max = 4;
+ }
+
+ new = dma_resv_list_alloc(max);
+ if (!new)
+ return -ENOMEM;
+
+ /*
+ * no need to bump fence refcounts, rcu_read access
+ * requires the use of kref_get_unless_zero, and the
+ * references from the old struct are carried over to
+ * the new.
+ */
+ for (i = 0, j = 0, k = max; i < (old ? old->shared_count : 0); ++i) {
+ struct dma_fence *fence;
+
+ fence = rcu_dereference_protected(old->shared[i],
+ dma_resv_held(obj));
+ if (dma_fence_is_signaled(fence))
+ RCU_INIT_POINTER(new->shared[--k], fence);
+ else
+ RCU_INIT_POINTER(new->shared[j++], fence);
+ }
+ new->shared_count = j;
+
+ /*
+ * We are not changing the effective set of fences here so can
+ * merely update the pointer to the new array; both existing
+ * readers and new readers will see exactly the same set of
+ * active (unsignaled) shared fences. Individual fences and the
+ * old array are protected by RCU and so will not vanish under
+ * the gaze of the rcu_read_lock() readers.
+ */
+ rcu_assign_pointer(obj->fence, new);
+
+ if (!old)
+ return 0;
+
+ /* Drop the references to the signaled fences */
+ for (i = k; i < max; ++i) {
+ struct dma_fence *fence;
+
+ fence = rcu_dereference_protected(new->shared[i],
+ dma_resv_held(obj));
+ dma_fence_put(fence);
+ }
+ kfree_rcu(old, rcu);
+
+ return 0;
+}
+EXPORT_SYMBOL(dma_resv_reserve_shared);
+
+/**
+ * dma_resv_add_shared_fence - Add a fence to a shared slot
+ * @obj: the reservation object
+ * @fence: the shared fence to add
+ *
+ * Add a fence to a shared slot, obj->lock must be held, and
+ * dma_resv_reserve_shared() has been called.
+ */
+void dma_resv_add_shared_fence(struct dma_resv *obj, struct dma_fence *fence)
+{
+ struct dma_resv_list *fobj;
+ struct dma_fence *old;
+ unsigned int i, count;
+
+ dma_fence_get(fence);
+
+ dma_resv_assert_held(obj);
+
+ fobj = dma_resv_get_list(obj);
+ count = fobj->shared_count;
+
+ for (i = 0; i < count; ++i) {
+
+ old = rcu_dereference_protected(fobj->shared[i],
+ dma_resv_held(obj));
+ if (old->context == fence->context ||
+ dma_fence_is_signaled(old))
+ goto replace;
+ }
+
+ BUG_ON(fobj->shared_count >= fobj->shared_max);
+ old = NULL;
+ count++;
+
+replace:
+ RCU_INIT_POINTER(fobj->shared[i], fence);
+ /* pointer update must be visible before we extend the shared_count */
+ smp_store_mb(fobj->shared_count, count);
+ dma_fence_put(old);
+}
+EXPORT_SYMBOL(dma_resv_add_shared_fence);
+
+/**
+ * dma_resv_add_excl_fence - Add an exclusive fence.
+ * @obj: the reservation object
+ * @fence: the shared fence to add
+ *
+ * Add a fence to the exclusive slot. The obj->lock must be held.
+ */
+void dma_resv_add_excl_fence(struct dma_resv *obj, struct dma_fence *fence)
+{
+ struct dma_fence *old_fence = dma_resv_get_excl(obj);
+ struct dma_resv_list *old;
+ u32 i = 0;
+
+ dma_resv_assert_held(obj);
+
+ old = dma_resv_get_list(obj);
+ if (old)
+ i = old->shared_count;
+
+ if (fence)
+ dma_fence_get(fence);
+
+ preempt_disable();
+ rcu_assign_pointer(obj->fence_excl, fence);
+ /* pointer update must be visible before we modify the shared_count */
+ if (old)
+ smp_store_mb(old->shared_count, 0);
+ preempt_enable();
+
+ /* inplace update, no shared fences */
+ while (i--)
+ dma_fence_put(rcu_dereference_protected(old->shared[i],
+ dma_resv_held(obj)));
+
+ dma_fence_put(old_fence);
+}
+EXPORT_SYMBOL(dma_resv_add_excl_fence);
+
+/**
+* dma_resv_copy_fences - Copy all fences from src to dst.
+* @dst: the destination reservation object
+* @src: the source reservation object
+*
+* Copy all fences from src to dst. dst-lock must be held.
+*/
+int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src)
+{
+ struct dma_resv_list *src_list, *dst_list;
+ struct dma_fence *old, *new;
+ unsigned int i, shared_count;
+
+ dma_resv_assert_held(dst);
+
+ rcu_read_lock();
+
+retry:
+ dma_resv_fences(src, &new, &src_list, &shared_count);
+ if (shared_count) {
+ rcu_read_unlock();
+
+ dst_list = dma_resv_list_alloc(shared_count);
+ if (!dst_list)
+ return -ENOMEM;
+
+ rcu_read_lock();
+ dma_resv_fences(src, &new, &src_list, &shared_count);
+ if (!src_list || shared_count > dst_list->shared_max) {
+ kfree(dst_list);
+ goto retry;
+ }
+
+ dst_list->shared_count = 0;
+ for (i = 0; i < shared_count; ++i) {
+ struct dma_fence *fence;
+
+ fence = rcu_dereference(src_list->shared[i]);
+ if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
+ &fence->flags))
+ continue;
+
+ if (!dma_fence_get_rcu(fence)) {
+ dma_resv_list_free(dst_list);
+ goto retry;
+ }
+
+ if (dma_fence_is_signaled(fence)) {
+ dma_fence_put(fence);
+ continue;
+ }
+
+ rcu_assign_pointer(dst_list->shared[dst_list->shared_count++], fence);
+ }
+ } else {
+ dst_list = NULL;
+ }
+
+ if (new && !dma_fence_get_rcu(new)) {
+ dma_resv_list_free(dst_list);
+ goto retry;
+ }
+ rcu_read_unlock();
+
+ src_list = dma_resv_get_list(dst);
+ old = dma_resv_get_excl(dst);
+
+ preempt_disable();
+ rcu_assign_pointer(dst->fence_excl, new);
+ rcu_assign_pointer(dst->fence, dst_list);
+ preempt_enable();
+
+ dma_resv_list_free(src_list);
+ dma_fence_put(old);
+
+ return 0;
+}
+EXPORT_SYMBOL(dma_resv_copy_fences);
+
+/**
+ * dma_resv_get_fences_rcu - Get an object's shared and exclusive
+ * fences without update side lock held
+ * @obj: the reservation object
+ * @pfence_excl: the returned exclusive fence (or NULL)
+ * @pshared_count: the number of shared fences returned
+ * @pshared: the array of shared fence ptrs returned (array is krealloc'd to
+ * the required size, and must be freed by caller)
+ *
+ * Retrieve all fences from the reservation object. If the pointer for the
+ * exclusive fence is not specified the fence is put into the array of the
+ * shared fences as well. Returns either zero or -ENOMEM.
+ */
+int dma_resv_get_fences_rcu(struct dma_resv *obj,
+ struct dma_fence **pfence_excl,
+ unsigned *pshared_count,
+ struct dma_fence ***pshared)
+{
+ struct dma_fence **shared = NULL;
+ struct dma_fence *fence_excl;
+ unsigned int shared_count;
+ int ret = 1;
+
+ do {
+ struct dma_resv_list *fobj;
+ unsigned int i;
+ size_t sz = 0;
+
+ i = 0;
+
+ rcu_read_lock();
+ dma_resv_fences(obj, &fence_excl, &fobj,
+ &shared_count);
+
+ if (fence_excl && !dma_fence_get_rcu(fence_excl))
+ goto unlock;
+
+ if (fobj)
+ sz += sizeof(*shared) * fobj->shared_max;
+
+ if (!pfence_excl && fence_excl)
+ sz += sizeof(*shared);
+
+ if (sz) {
+ struct dma_fence **nshared;
+
+ nshared = krealloc(shared, sz,
+ GFP_NOWAIT | __GFP_NOWARN);
+ if (!nshared) {
+ rcu_read_unlock();
+
+ dma_fence_put(fence_excl);
+ fence_excl = NULL;
+
+ nshared = krealloc(shared, sz, GFP_KERNEL);
+ if (nshared) {
+ shared = nshared;
+ continue;
+ }
+
+ ret = -ENOMEM;
+ break;
+ }
+ shared = nshared;
+ for (i = 0; i < shared_count; ++i) {
+ shared[i] = rcu_dereference(fobj->shared[i]);
+ if (!dma_fence_get_rcu(shared[i]))
+ break;
+ }
+ }
+
+ if (i != shared_count) {
+ while (i--)
+ dma_fence_put(shared[i]);
+ dma_fence_put(fence_excl);
+ goto unlock;
+ }
+
+ ret = 0;
+unlock:
+ rcu_read_unlock();
+ } while (ret);
+
+ if (pfence_excl)
+ *pfence_excl = fence_excl;
+ else if (fence_excl)
+ shared[++shared_count] = fence_excl;
+
+ if (!shared_count) {
+ kfree(shared);
+ shared = NULL;
+ }
+
+ *pshared_count = shared_count;
+ *pshared = shared;
+ return ret;
+}
+EXPORT_SYMBOL_GPL(dma_resv_get_fences_rcu);
+
+/**
+ * dma_resv_wait_timeout_rcu - Wait on reservation's objects
+ * shared and/or exclusive fences.
+ * @obj: the reservation object
+ * @wait_all: if true, wait on all fences, else wait on just exclusive fence
+ * @intr: if true, do interruptible wait
+ * @timeout: timeout value in jiffies or zero to return immediately
+ *
+ * RETURNS
+ * Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or
+ * greater than zer on success.
+ */
+long dma_resv_wait_timeout_rcu(struct dma_resv *obj,
+ bool wait_all, bool intr,
+ unsigned long timeout)
+{
+ struct dma_resv_list *fobj;
+ struct dma_fence *fence;
+ unsigned shared_count;
+ long ret = timeout ? timeout : 1;
+ int i;
+
+retry:
+ rcu_read_lock();
+ i = -1;
+
+ dma_resv_fences(obj, &fence, &fobj, &shared_count);
+ if (fence && !test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) {
+ if (!dma_fence_get_rcu(fence))
+ goto unlock_retry;
+
+ if (dma_fence_is_signaled(fence)) {
+ dma_fence_put(fence);
+ fence = NULL;
+ }
+
+ } else {
+ fence = NULL;
+ }
+
+ if (wait_all) {
+ for (i = 0; !fence && i < shared_count; ++i) {
+ struct dma_fence *lfence = rcu_dereference(fobj->shared[i]);
+
+ if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
+ &lfence->flags))
+ continue;
+
+ if (!dma_fence_get_rcu(lfence))
+ goto unlock_retry;
+
+ if (dma_fence_is_signaled(lfence)) {
+ dma_fence_put(lfence);
+ continue;
+ }
+
+ fence = lfence;
+ break;
+ }
+ }
+
+ rcu_read_unlock();
+ if (fence) {
+ ret = dma_fence_wait_timeout(fence, intr, ret);
+ dma_fence_put(fence);
+ if (ret > 0 && wait_all && (i + 1 < shared_count))
+ goto retry;
+ }
+ return ret;
+
+unlock_retry:
+ rcu_read_unlock();
+ goto retry;
+}
+EXPORT_SYMBOL_GPL(dma_resv_wait_timeout_rcu);
+
+
+static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence)
+{
+ struct dma_fence *fence, *lfence = passed_fence;
+ int ret = 1;
+
+ if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &lfence->flags)) {
+ fence = dma_fence_get_rcu(lfence);
+ if (!fence)
+ return -1;
+
+ ret = !!dma_fence_is_signaled(fence);
+ dma_fence_put(fence);
+ }
+ return ret;
+}
+
+/**
+ * dma_resv_test_signaled_rcu - Test if a reservation object's
+ * fences have been signaled.
+ * @obj: the reservation object
+ * @test_all: if true, test all fences, otherwise only test the exclusive
+ * fence
+ *
+ * RETURNS
+ * true if all fences signaled, else false
+ */
+bool dma_resv_test_signaled_rcu(struct dma_resv *obj, bool test_all)
+{
+ struct dma_resv_list *fobj;
+ struct dma_fence *fence_excl;
+ unsigned shared_count;
+ int ret;
+
+ rcu_read_lock();
+retry:
+ ret = true;
+
+ dma_resv_fences(obj, &fence_excl, &fobj, &shared_count);
+ if (test_all) {
+ unsigned i;
+
+ for (i = 0; i < shared_count; ++i) {
+ struct dma_fence *fence = rcu_dereference(fobj->shared[i]);
+
+ ret = dma_resv_test_signaled_single(fence);
+ if (ret < 0)
+ goto retry;
+ else if (!ret)
+ break;
+ }
+ }
+
+ if (!shared_count && fence_excl) {
+ ret = dma_resv_test_signaled_single(fence_excl);
+ if (ret < 0)
+ goto retry;
+ }
+
+ rcu_read_unlock();
+ return ret;
+}
+EXPORT_SYMBOL_GPL(dma_resv_test_signaled_rcu);
+++ /dev/null
-/*
- * Copyright (C) 2012-2014 Canonical Ltd (Maarten Lankhorst)
- *
- * Based on bo.c which bears the following copyright notice,
- * but is dual licensed:
- *
- * 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>
- */
-
-#include <linux/reservation.h>
-#include <linux/export.h>
-
-/**
- * DOC: Reservation Object Overview
- *
- * The reservation object provides a mechanism to manage shared and
- * exclusive fences associated with a buffer. A reservation object
- * can have attached one exclusive fence (normally associated with
- * write operations) or N shared fences (read operations). The RCU
- * mechanism is used to protect read access to fences from locked
- * write-side updates.
- */
-
-DEFINE_WD_CLASS(reservation_ww_class);
-EXPORT_SYMBOL(reservation_ww_class);
-
-/**
- * reservation_object_list_alloc - allocate fence list
- * @shared_max: number of fences we need space for
- *
- * Allocate a new reservation_object_list and make sure to correctly initialize
- * shared_max.
- */
-static struct reservation_object_list *
-reservation_object_list_alloc(unsigned int shared_max)
-{
- struct reservation_object_list *list;
-
- list = kmalloc(offsetof(typeof(*list), shared[shared_max]), GFP_KERNEL);
- if (!list)
- return NULL;
-
- list->shared_max = (ksize(list) - offsetof(typeof(*list), shared)) /
- sizeof(*list->shared);
-
- return list;
-}
-
-/**
- * reservation_object_list_free - free fence list
- * @list: list to free
- *
- * Free a reservation_object_list and make sure to drop all references.
- */
-static void reservation_object_list_free(struct reservation_object_list *list)
-{
- unsigned int i;
-
- if (!list)
- return;
-
- for (i = 0; i < list->shared_count; ++i)
- dma_fence_put(rcu_dereference_protected(list->shared[i], true));
-
- kfree_rcu(list, rcu);
-}
-
-/**
- * reservation_object_init - initialize a reservation object
- * @obj: the reservation object
- */
-void reservation_object_init(struct reservation_object *obj)
-{
- ww_mutex_init(&obj->lock, &reservation_ww_class);
- RCU_INIT_POINTER(obj->fence, NULL);
- RCU_INIT_POINTER(obj->fence_excl, NULL);
-}
-EXPORT_SYMBOL(reservation_object_init);
-
-/**
- * reservation_object_fini - destroys a reservation object
- * @obj: the reservation object
- */
-void reservation_object_fini(struct reservation_object *obj)
-{
- struct reservation_object_list *fobj;
- struct dma_fence *excl;
-
- /*
- * This object should be dead and all references must have
- * been released to it, so no need to be protected with rcu.
- */
- excl = rcu_dereference_protected(obj->fence_excl, 1);
- if (excl)
- dma_fence_put(excl);
-
- fobj = rcu_dereference_protected(obj->fence, 1);
- reservation_object_list_free(fobj);
- ww_mutex_destroy(&obj->lock);
-}
-EXPORT_SYMBOL(reservation_object_fini);
-
-/**
- * reservation_object_reserve_shared - Reserve space to add shared fences to
- * a reservation_object.
- * @obj: reservation object
- * @num_fences: number of fences we want to add
- *
- * Should be called before reservation_object_add_shared_fence(). Must
- * be called with obj->lock held.
- *
- * RETURNS
- * Zero for success, or -errno
- */
-int reservation_object_reserve_shared(struct reservation_object *obj,
- unsigned int num_fences)
-{
- struct reservation_object_list *old, *new;
- unsigned int i, j, k, max;
-
- reservation_object_assert_held(obj);
-
- old = reservation_object_get_list(obj);
-
- if (old && old->shared_max) {
- if ((old->shared_count + num_fences) <= old->shared_max)
- return 0;
- else
- max = max(old->shared_count + num_fences,
- old->shared_max * 2);
- } else {
- max = 4;
- }
-
- new = reservation_object_list_alloc(max);
- if (!new)
- return -ENOMEM;
-
- /*
- * no need to bump fence refcounts, rcu_read access
- * requires the use of kref_get_unless_zero, and the
- * references from the old struct are carried over to
- * the new.
- */
- for (i = 0, j = 0, k = max; i < (old ? old->shared_count : 0); ++i) {
- struct dma_fence *fence;
-
- fence = rcu_dereference_protected(old->shared[i],
- reservation_object_held(obj));
- if (dma_fence_is_signaled(fence))
- RCU_INIT_POINTER(new->shared[--k], fence);
- else
- RCU_INIT_POINTER(new->shared[j++], fence);
- }
- new->shared_count = j;
-
- /*
- * We are not changing the effective set of fences here so can
- * merely update the pointer to the new array; both existing
- * readers and new readers will see exactly the same set of
- * active (unsignaled) shared fences. Individual fences and the
- * old array are protected by RCU and so will not vanish under
- * the gaze of the rcu_read_lock() readers.
- */
- rcu_assign_pointer(obj->fence, new);
-
- if (!old)
- return 0;
-
- /* Drop the references to the signaled fences */
- for (i = k; i < max; ++i) {
- struct dma_fence *fence;
-
- fence = rcu_dereference_protected(new->shared[i],
- reservation_object_held(obj));
- dma_fence_put(fence);
- }
- kfree_rcu(old, rcu);
-
- return 0;
-}
-EXPORT_SYMBOL(reservation_object_reserve_shared);
-
-/**
- * reservation_object_add_shared_fence - Add a fence to a shared slot
- * @obj: the reservation object
- * @fence: the shared fence to add
- *
- * Add a fence to a shared slot, obj->lock must be held, and
- * reservation_object_reserve_shared() has been called.
- */
-void reservation_object_add_shared_fence(struct reservation_object *obj,
- struct dma_fence *fence)
-{
- struct reservation_object_list *fobj;
- struct dma_fence *old;
- unsigned int i, count;
-
- dma_fence_get(fence);
-
- reservation_object_assert_held(obj);
-
- fobj = reservation_object_get_list(obj);
- count = fobj->shared_count;
-
- for (i = 0; i < count; ++i) {
-
- old = rcu_dereference_protected(fobj->shared[i],
- reservation_object_held(obj));
- if (old->context == fence->context ||
- dma_fence_is_signaled(old))
- goto replace;
- }
-
- BUG_ON(fobj->shared_count >= fobj->shared_max);
- old = NULL;
- count++;
-
-replace:
- RCU_INIT_POINTER(fobj->shared[i], fence);
- /* pointer update must be visible before we extend the shared_count */
- smp_store_mb(fobj->shared_count, count);
- dma_fence_put(old);
-}
-EXPORT_SYMBOL(reservation_object_add_shared_fence);
-
-/**
- * reservation_object_add_excl_fence - Add an exclusive fence.
- * @obj: the reservation object
- * @fence: the shared fence to add
- *
- * Add a fence to the exclusive slot. The obj->lock must be held.
- */
-void reservation_object_add_excl_fence(struct reservation_object *obj,
- struct dma_fence *fence)
-{
- struct dma_fence *old_fence = reservation_object_get_excl(obj);
- struct reservation_object_list *old;
- u32 i = 0;
-
- reservation_object_assert_held(obj);
-
- old = reservation_object_get_list(obj);
- if (old)
- i = old->shared_count;
-
- if (fence)
- dma_fence_get(fence);
-
- preempt_disable();
- rcu_assign_pointer(obj->fence_excl, fence);
- /* pointer update must be visible before we modify the shared_count */
- if (old)
- smp_store_mb(old->shared_count, 0);
- preempt_enable();
-
- /* inplace update, no shared fences */
- while (i--)
- dma_fence_put(rcu_dereference_protected(old->shared[i],
- reservation_object_held(obj)));
-
- dma_fence_put(old_fence);
-}
-EXPORT_SYMBOL(reservation_object_add_excl_fence);
-
-/**
-* reservation_object_copy_fences - Copy all fences from src to dst.
-* @dst: the destination reservation object
-* @src: the source reservation object
-*
-* Copy all fences from src to dst. dst-lock must be held.
-*/
-int reservation_object_copy_fences(struct reservation_object *dst,
- struct reservation_object *src)
-{
- struct reservation_object_list *src_list, *dst_list;
- struct dma_fence *old, *new;
- unsigned int i, shared_count;
-
- reservation_object_assert_held(dst);
-
- rcu_read_lock();
-
-retry:
- reservation_object_fences(src, &new, &src_list, &shared_count);
- if (shared_count) {
- rcu_read_unlock();
-
- dst_list = reservation_object_list_alloc(shared_count);
- if (!dst_list)
- return -ENOMEM;
-
- rcu_read_lock();
- reservation_object_fences(src, &new, &src_list, &shared_count);
- if (!src_list || shared_count > dst_list->shared_max) {
- kfree(dst_list);
- goto retry;
- }
-
- dst_list->shared_count = 0;
- for (i = 0; i < shared_count; ++i) {
- struct dma_fence *fence;
-
- fence = rcu_dereference(src_list->shared[i]);
- if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
- &fence->flags))
- continue;
-
- if (!dma_fence_get_rcu(fence)) {
- reservation_object_list_free(dst_list);
- goto retry;
- }
-
- if (dma_fence_is_signaled(fence)) {
- dma_fence_put(fence);
- continue;
- }
-
- rcu_assign_pointer(dst_list->shared[dst_list->shared_count++], fence);
- }
- } else {
- dst_list = NULL;
- }
-
- if (new && !dma_fence_get_rcu(new)) {
- reservation_object_list_free(dst_list);
- goto retry;
- }
- rcu_read_unlock();
-
- src_list = reservation_object_get_list(dst);
- old = reservation_object_get_excl(dst);
-
- preempt_disable();
- rcu_assign_pointer(dst->fence_excl, new);
- rcu_assign_pointer(dst->fence, dst_list);
- preempt_enable();
-
- reservation_object_list_free(src_list);
- dma_fence_put(old);
-
- return 0;
-}
-EXPORT_SYMBOL(reservation_object_copy_fences);
-
-/**
- * reservation_object_get_fences_rcu - Get an object's shared and exclusive
- * fences without update side lock held
- * @obj: the reservation object
- * @pfence_excl: the returned exclusive fence (or NULL)
- * @pshared_count: the number of shared fences returned
- * @pshared: the array of shared fence ptrs returned (array is krealloc'd to
- * the required size, and must be freed by caller)
- *
- * Retrieve all fences from the reservation object. If the pointer for the
- * exclusive fence is not specified the fence is put into the array of the
- * shared fences as well. Returns either zero or -ENOMEM.
- */
-int reservation_object_get_fences_rcu(struct reservation_object *obj,
- struct dma_fence **pfence_excl,
- unsigned *pshared_count,
- struct dma_fence ***pshared)
-{
- struct dma_fence **shared = NULL;
- struct dma_fence *fence_excl;
- unsigned int shared_count;
- int ret = 1;
-
- do {
- struct reservation_object_list *fobj;
- unsigned int i;
- size_t sz = 0;
-
- i = 0;
-
- rcu_read_lock();
- reservation_object_fences(obj, &fence_excl, &fobj,
- &shared_count);
-
- if (fence_excl && !dma_fence_get_rcu(fence_excl))
- goto unlock;
-
- if (fobj)
- sz += sizeof(*shared) * fobj->shared_max;
-
- if (!pfence_excl && fence_excl)
- sz += sizeof(*shared);
-
- if (sz) {
- struct dma_fence **nshared;
-
- nshared = krealloc(shared, sz,
- GFP_NOWAIT | __GFP_NOWARN);
- if (!nshared) {
- rcu_read_unlock();
-
- dma_fence_put(fence_excl);
- fence_excl = NULL;
-
- nshared = krealloc(shared, sz, GFP_KERNEL);
- if (nshared) {
- shared = nshared;
- continue;
- }
-
- ret = -ENOMEM;
- break;
- }
- shared = nshared;
- for (i = 0; i < shared_count; ++i) {
- shared[i] = rcu_dereference(fobj->shared[i]);
- if (!dma_fence_get_rcu(shared[i]))
- break;
- }
- }
-
- if (i != shared_count) {
- while (i--)
- dma_fence_put(shared[i]);
- dma_fence_put(fence_excl);
- goto unlock;
- }
-
- ret = 0;
-unlock:
- rcu_read_unlock();
- } while (ret);
-
- if (pfence_excl)
- *pfence_excl = fence_excl;
- else if (fence_excl)
- shared[++shared_count] = fence_excl;
-
- if (!shared_count) {
- kfree(shared);
- shared = NULL;
- }
-
- *pshared_count = shared_count;
- *pshared = shared;
- return ret;
-}
-EXPORT_SYMBOL_GPL(reservation_object_get_fences_rcu);
-
-/**
- * reservation_object_wait_timeout_rcu - Wait on reservation's objects
- * shared and/or exclusive fences.
- * @obj: the reservation object
- * @wait_all: if true, wait on all fences, else wait on just exclusive fence
- * @intr: if true, do interruptible wait
- * @timeout: timeout value in jiffies or zero to return immediately
- *
- * RETURNS
- * Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or
- * greater than zer on success.
- */
-long reservation_object_wait_timeout_rcu(struct reservation_object *obj,
- bool wait_all, bool intr,
- unsigned long timeout)
-{
- struct reservation_object_list *fobj;
- struct dma_fence *fence;
- unsigned shared_count;
- long ret = timeout ? timeout : 1;
- int i;
-
-retry:
- rcu_read_lock();
- i = -1;
-
- reservation_object_fences(obj, &fence, &fobj, &shared_count);
- if (fence && !test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) {
- if (!dma_fence_get_rcu(fence))
- goto unlock_retry;
-
- if (dma_fence_is_signaled(fence)) {
- dma_fence_put(fence);
- fence = NULL;
- }
-
- } else {
- fence = NULL;
- }
-
- if (wait_all) {
- for (i = 0; !fence && i < shared_count; ++i) {
- struct dma_fence *lfence = rcu_dereference(fobj->shared[i]);
-
- if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
- &lfence->flags))
- continue;
-
- if (!dma_fence_get_rcu(lfence))
- goto unlock_retry;
-
- if (dma_fence_is_signaled(lfence)) {
- dma_fence_put(lfence);
- continue;
- }
-
- fence = lfence;
- break;
- }
- }
-
- rcu_read_unlock();
- if (fence) {
- ret = dma_fence_wait_timeout(fence, intr, ret);
- dma_fence_put(fence);
- if (ret > 0 && wait_all && (i + 1 < shared_count))
- goto retry;
- }
- return ret;
-
-unlock_retry:
- rcu_read_unlock();
- goto retry;
-}
-EXPORT_SYMBOL_GPL(reservation_object_wait_timeout_rcu);
-
-
-static inline int
-reservation_object_test_signaled_single(struct dma_fence *passed_fence)
-{
- struct dma_fence *fence, *lfence = passed_fence;
- int ret = 1;
-
- if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &lfence->flags)) {
- fence = dma_fence_get_rcu(lfence);
- if (!fence)
- return -1;
-
- ret = !!dma_fence_is_signaled(fence);
- dma_fence_put(fence);
- }
- return ret;
-}
-
-/**
- * reservation_object_test_signaled_rcu - Test if a reservation object's
- * fences have been signaled.
- * @obj: the reservation object
- * @test_all: if true, test all fences, otherwise only test the exclusive
- * fence
- *
- * RETURNS
- * true if all fences signaled, else false
- */
-bool reservation_object_test_signaled_rcu(struct reservation_object *obj,
- bool test_all)
-{
- struct reservation_object_list *fobj;
- struct dma_fence *fence_excl;
- unsigned shared_count;
- int ret;
-
- rcu_read_lock();
-retry:
- ret = true;
-
- reservation_object_fences(obj, &fence_excl, &fobj, &shared_count);
- if (test_all) {
- unsigned i;
-
- for (i = 0; i < shared_count; ++i) {
- struct dma_fence *fence = rcu_dereference(fobj->shared[i]);
-
- ret = reservation_object_test_signaled_single(fence);
- if (ret < 0)
- goto retry;
- else if (!ret)
- break;
- }
- }
-
- if (!shared_count && fence_excl) {
- ret = reservation_object_test_signaled_single(fence_excl);
- if (ret < 0)
- goto retry;
- }
-
- rcu_read_unlock();
- return ret;
-}
-EXPORT_SYMBOL_GPL(reservation_object_test_signaled_rcu);
static int amdgpu_amdkfd_remove_eviction_fence(struct amdgpu_bo *bo,
struct amdgpu_amdkfd_fence *ef)
{
- struct reservation_object *resv = bo->tbo.base.resv;
- struct reservation_object_list *old, *new;
+ struct dma_resv *resv = bo->tbo.base.resv;
+ struct dma_resv_list *old, *new;
unsigned int i, j, k;
if (!ef)
return -EINVAL;
- old = reservation_object_get_list(resv);
+ old = dma_resv_get_list(resv);
if (!old)
return 0;
struct dma_fence *f;
f = rcu_dereference_protected(old->shared[i],
- reservation_object_held(resv));
+ dma_resv_held(resv));
if (f->context == ef->base.context)
RCU_INIT_POINTER(new->shared[--j], f);
struct dma_fence *f;
f = rcu_dereference_protected(new->shared[i],
- reservation_object_held(resv));
+ dma_resv_held(resv));
dma_fence_put(f);
}
kfree_rcu(old, rcu);
AMDGPU_FENCE_OWNER_KFD, false);
if (ret)
goto wait_pd_fail;
- ret = reservation_object_reserve_shared(vm->root.base.bo->tbo.base.resv, 1);
+ ret = dma_resv_reserve_shared(vm->root.base.bo->tbo.base.resv, 1);
if (ret)
goto reserve_shared_fail;
amdgpu_bo_fence(vm->root.base.bo,
* Add process eviction fence to bo so they can
* evict each other.
*/
- ret = reservation_object_reserve_shared(gws_bo->tbo.base.resv, 1);
+ ret = dma_resv_reserve_shared(gws_bo->tbo.base.resv, 1);
if (ret)
goto reserve_shared_fail;
amdgpu_bo_fence(gws_bo, &process_info->eviction_fence->base, true);
list_for_each_entry(e, &p->validated, tv.head) {
struct amdgpu_bo *bo = ttm_to_amdgpu_bo(e->tv.bo);
- struct reservation_object *resv = bo->tbo.base.resv;
+ struct dma_resv *resv = bo->tbo.base.resv;
r = amdgpu_sync_resv(p->adev, &p->job->sync, resv, p->filp,
amdgpu_bo_explicit_sync(bo));
*map = mapping;
/* Double check that the BO is reserved by this CS */
- if (reservation_object_locking_ctx((*bo)->tbo.base.resv) != &parser->ticket)
+ if (dma_resv_locking_ctx((*bo)->tbo.base.resv) != &parser->ticket)
return -EINVAL;
if (!((*bo)->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)) {
goto unpin;
}
- r = reservation_object_get_fences_rcu(new_abo->tbo.base.resv, &work->excl,
+ r = dma_resv_get_fences_rcu(new_abo->tbo.base.resv, &work->excl,
&work->shared_count,
&work->shared);
if (unlikely(r != 0)) {
}
static int
-__reservation_object_make_exclusive(struct reservation_object *obj)
+__dma_resv_make_exclusive(struct dma_resv *obj)
{
struct dma_fence **fences;
unsigned int count;
int r;
- if (!reservation_object_get_list(obj)) /* no shared fences to convert */
+ if (!dma_resv_get_list(obj)) /* no shared fences to convert */
return 0;
- r = reservation_object_get_fences_rcu(obj, NULL, &count, &fences);
+ r = dma_resv_get_fences_rcu(obj, NULL, &count, &fences);
if (r)
return r;
if (count == 0) {
/* Now that was unexpected. */
} else if (count == 1) {
- reservation_object_add_excl_fence(obj, fences[0]);
+ dma_resv_add_excl_fence(obj, fences[0]);
dma_fence_put(fences[0]);
kfree(fences);
} else {
if (!array)
goto err_fences_put;
- reservation_object_add_excl_fence(obj, &array->base);
+ dma_resv_add_excl_fence(obj, &array->base);
dma_fence_put(&array->base);
}
* fences on the reservation object into a single exclusive
* fence.
*/
- r = __reservation_object_make_exclusive(bo->tbo.base.resv);
+ r = __dma_resv_make_exclusive(bo->tbo.base.resv);
if (r)
goto error_unreserve;
}
struct dma_buf_attachment *attach,
struct sg_table *sg)
{
- struct reservation_object *resv = attach->dmabuf->resv;
+ struct dma_resv *resv = attach->dmabuf->resv;
struct amdgpu_device *adev = dev->dev_private;
struct amdgpu_bo *bo;
struct amdgpu_bo_param bp;
bp.flags = 0;
bp.type = ttm_bo_type_sg;
bp.resv = resv;
- reservation_object_lock(resv, NULL);
+ dma_resv_lock(resv, NULL);
ret = amdgpu_bo_create(adev, &bp, &bo);
if (ret)
goto error;
if (attach->dmabuf->ops != &amdgpu_dmabuf_ops)
bo->prime_shared_count = 1;
- reservation_object_unlock(resv);
+ dma_resv_unlock(resv);
return &bo->tbo.base;
error:
- reservation_object_unlock(resv);
+ dma_resv_unlock(resv);
return ERR_PTR(ret);
}
int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
int alignment, u32 initial_domain,
u64 flags, enum ttm_bo_type type,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct drm_gem_object **obj)
{
struct amdgpu_bo *bo;
union drm_amdgpu_gem_create *args = data;
uint64_t flags = args->in.domain_flags;
uint64_t size = args->in.bo_size;
- struct reservation_object *resv = NULL;
+ struct dma_resv *resv = NULL;
struct drm_gem_object *gobj;
uint32_t handle;
int r;
return -ENOENT;
}
robj = gem_to_amdgpu_bo(gobj);
- ret = reservation_object_wait_timeout_rcu(robj->tbo.base.resv, true, true,
+ ret = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true,
timeout);
/* ret == 0 means not signaled,
int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
int alignment, u32 initial_domain,
u64 flags, enum ttm_bo_type type,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct drm_gem_object **obj);
int amdgpu_mode_dumb_create(struct drm_file *file_priv,
*
* Free the pasid only after all the fences in resv are signaled.
*/
-void amdgpu_pasid_free_delayed(struct reservation_object *resv,
+void amdgpu_pasid_free_delayed(struct dma_resv *resv,
unsigned int pasid)
{
struct dma_fence *fence, **fences;
unsigned count;
int r;
- r = reservation_object_get_fences_rcu(resv, NULL, &count, &fences);
+ r = dma_resv_get_fences_rcu(resv, NULL, &count, &fences);
if (r)
goto fallback;
/* Not enough memory for the delayed delete, as last resort
* block for all the fences to complete.
*/
- reservation_object_wait_timeout_rcu(resv, true, false,
+ dma_resv_wait_timeout_rcu(resv, true, false,
MAX_SCHEDULE_TIMEOUT);
amdgpu_pasid_free(pasid);
}
int amdgpu_pasid_alloc(unsigned int bits);
void amdgpu_pasid_free(unsigned int pasid);
-void amdgpu_pasid_free_delayed(struct reservation_object *resv,
+void amdgpu_pasid_free_delayed(struct dma_resv *resv,
unsigned int pasid);
bool amdgpu_vmid_had_gpu_reset(struct amdgpu_device *adev,
if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, start, end))
continue;
- r = reservation_object_wait_timeout_rcu(bo->tbo.base.resv,
+ r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv,
true, false, MAX_SCHEDULE_TIMEOUT);
if (r <= 0)
DRM_ERROR("(%ld) failed to wait for user bo\n", r);
fail_unreserve:
if (!bp->resv)
- reservation_object_unlock(bo->tbo.base.resv);
+ dma_resv_unlock(bo->tbo.base.resv);
amdgpu_bo_unref(&bo);
return r;
}
if ((flags & AMDGPU_GEM_CREATE_SHADOW) && !(adev->flags & AMD_IS_APU)) {
if (!bp->resv)
- WARN_ON(reservation_object_lock((*bo_ptr)->tbo.base.resv,
+ WARN_ON(dma_resv_lock((*bo_ptr)->tbo.base.resv,
NULL));
r = amdgpu_bo_create_shadow(adev, bp->size, *bo_ptr);
if (!bp->resv)
- reservation_object_unlock((*bo_ptr)->tbo.base.resv);
+ dma_resv_unlock((*bo_ptr)->tbo.base.resv);
if (r)
amdgpu_bo_unref(bo_ptr);
return 0;
}
- r = reservation_object_wait_timeout_rcu(bo->tbo.base.resv, false, false,
+ r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv, false, false,
MAX_SCHEDULE_TIMEOUT);
if (r < 0)
return r;
*/
void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
{
- reservation_object_assert_held(bo->tbo.base.resv);
+ dma_resv_assert_held(bo->tbo.base.resv);
if (tiling_flags)
*tiling_flags = bo->tiling_flags;
void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
bool shared)
{
- struct reservation_object *resv = bo->tbo.base.resv;
+ struct dma_resv *resv = bo->tbo.base.resv;
if (shared)
- reservation_object_add_shared_fence(resv, fence);
+ dma_resv_add_shared_fence(resv, fence);
else
- reservation_object_add_excl_fence(resv, fence);
+ dma_resv_add_excl_fence(resv, fence);
}
/**
u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
{
WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_SYSTEM);
- WARN_ON_ONCE(!reservation_object_is_locked(bo->tbo.base.resv) &&
+ WARN_ON_ONCE(!dma_resv_is_locked(bo->tbo.base.resv) &&
!bo->pin_count && bo->tbo.type != ttm_bo_type_kernel);
WARN_ON_ONCE(bo->tbo.mem.start == AMDGPU_BO_INVALID_OFFSET);
WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_VRAM &&
u32 preferred_domain;
u64 flags;
enum ttm_bo_type type;
- struct reservation_object *resv;
+ struct dma_resv *resv;
};
/* bo virtual addresses in a vm */
*/
int amdgpu_sync_resv(struct amdgpu_device *adev,
struct amdgpu_sync *sync,
- struct reservation_object *resv,
+ struct dma_resv *resv,
void *owner, bool explicit_sync)
{
- struct reservation_object_list *flist;
+ struct dma_resv_list *flist;
struct dma_fence *f;
void *fence_owner;
unsigned i;
return -EINVAL;
/* always sync to the exclusive fence */
- f = reservation_object_get_excl(resv);
+ f = dma_resv_get_excl(resv);
r = amdgpu_sync_fence(adev, sync, f, false);
- flist = reservation_object_get_list(resv);
+ flist = dma_resv_get_list(resv);
if (!flist || r)
return r;
for (i = 0; i < flist->shared_count; ++i) {
f = rcu_dereference_protected(flist->shared[i],
- reservation_object_held(resv));
+ dma_resv_held(resv));
/* We only want to trigger KFD eviction fences on
* evict or move jobs. Skip KFD fences otherwise.
*/
#include <linux/hashtable.h>
struct dma_fence;
-struct reservation_object;
+struct dma_resv;
struct amdgpu_device;
struct amdgpu_ring;
struct dma_fence *f, bool explicit);
int amdgpu_sync_resv(struct amdgpu_device *adev,
struct amdgpu_sync *sync,
- struct reservation_object *resv,
+ struct dma_resv *resv,
void *owner,
bool explicit_sync);
struct dma_fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
struct amdgpu_copy_mem *src,
struct amdgpu_copy_mem *dst,
uint64_t size,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct dma_fence **f)
{
struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
{
unsigned long num_pages = bo->mem.num_pages;
struct drm_mm_node *node = bo->mem.mm_node;
- struct reservation_object_list *flist;
+ struct dma_resv_list *flist;
struct dma_fence *f;
int i;
* cleanly handle page faults.
*/
if (bo->type == ttm_bo_type_kernel &&
- !reservation_object_test_signaled_rcu(bo->base.resv, true))
+ !dma_resv_test_signaled_rcu(bo->base.resv, true))
return false;
/* If bo is a KFD BO, check if the bo belongs to the current process.
* If true, then return false as any KFD process needs all its BOs to
* be resident to run successfully
*/
- flist = reservation_object_get_list(bo->base.resv);
+ flist = dma_resv_get_list(bo->base.resv);
if (flist) {
for (i = 0; i < flist->shared_count; ++i) {
f = rcu_dereference_protected(flist->shared[i],
- reservation_object_held(bo->base.resv));
+ dma_resv_held(bo->base.resv));
if (amdkfd_fence_check_mm(f, current->mm))
return false;
}
int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
uint64_t dst_offset, uint32_t byte_count,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct dma_fence **fence, bool direct_submit,
bool vm_needs_flush)
{
int amdgpu_fill_buffer(struct amdgpu_bo *bo,
uint32_t src_data,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct dma_fence **fence)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
uint64_t dst_offset, uint32_t byte_count,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct dma_fence **fence, bool direct_submit,
bool vm_needs_flush);
int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
struct amdgpu_copy_mem *src,
struct amdgpu_copy_mem *dst,
uint64_t size,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct dma_fence **f);
int amdgpu_fill_buffer(struct amdgpu_bo *bo,
uint32_t src_data,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct dma_fence **fence);
int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma);
ib->length_dw = 16;
if (direct) {
- r = reservation_object_wait_timeout_rcu(bo->tbo.base.resv,
+ r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv,
true, false,
msecs_to_jiffies(10));
if (r == 0)
ttm = container_of(bo->tbo.ttm, struct ttm_dma_tt, ttm);
pages_addr = ttm->dma_address;
}
- exclusive = reservation_object_get_excl(bo->tbo.base.resv);
+ exclusive = dma_resv_get_excl(bo->tbo.base.resv);
}
if (bo) {
*/
static void amdgpu_vm_prt_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
{
- struct reservation_object *resv = vm->root.base.bo->tbo.base.resv;
+ struct dma_resv *resv = vm->root.base.bo->tbo.base.resv;
struct dma_fence *excl, **shared;
unsigned i, shared_count;
int r;
- r = reservation_object_get_fences_rcu(resv, &excl,
+ r = dma_resv_get_fences_rcu(resv, &excl,
&shared_count, &shared);
if (r) {
/* Not enough memory to grab the fence list, as last resort
* block for all the fences to complete.
*/
- reservation_object_wait_timeout_rcu(resv, true, false,
+ dma_resv_wait_timeout_rcu(resv, true, false,
MAX_SCHEDULE_TIMEOUT);
return;
}
struct amdgpu_vm *vm)
{
struct amdgpu_bo_va *bo_va, *tmp;
- struct reservation_object *resv;
+ struct dma_resv *resv;
bool clear;
int r;
spin_unlock(&vm->invalidated_lock);
/* Try to reserve the BO to avoid clearing its ptes */
- if (!amdgpu_vm_debug && reservation_object_trylock(resv))
+ if (!amdgpu_vm_debug && dma_resv_trylock(resv))
clear = false;
/* Somebody else is using the BO right now */
else
return r;
if (!clear)
- reservation_object_unlock(resv);
+ dma_resv_unlock(resv);
spin_lock(&vm->invalidated_lock);
}
spin_unlock(&vm->invalidated_lock);
struct amdgpu_bo *bo;
bo = mapping->bo_va->base.bo;
- if (reservation_object_locking_ctx(bo->tbo.base.resv) !=
+ if (dma_resv_locking_ctx(bo->tbo.base.resv) !=
ticket)
continue;
}
*/
long amdgpu_vm_wait_idle(struct amdgpu_vm *vm, long timeout)
{
- return reservation_object_wait_timeout_rcu(vm->root.base.bo->tbo.base.resv,
+ return dma_resv_wait_timeout_rcu(vm->root.base.bo->tbo.base.resv,
true, true, timeout);
}
if (r)
goto error_free_root;
- r = reservation_object_reserve_shared(root->tbo.base.resv, 1);
+ r = dma_resv_reserve_shared(root->tbo.base.resv, 1);
if (r)
goto error_unreserve;
* deadlock during GPU reset when this fence will not signal
* but we hold reservation lock for the BO.
*/
- r = reservation_object_wait_timeout_rcu(abo->tbo.base.resv, true,
+ r = dma_resv_wait_timeout_rcu(abo->tbo.base.resv, true,
false,
msecs_to_jiffies(5000));
if (unlikely(r <= 0))
* As a contrast, with implicit fencing the kernel keeps track of any
* ongoing rendering, and automatically ensures that the atomic update waits
* for any pending rendering to complete. For shared buffers represented with
- * a &struct dma_buf this is tracked in &struct reservation_object.
+ * a &struct dma_buf this is tracked in &struct dma_resv.
* Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
* whereas explicit fencing is what Android wants.
*
kref_init(&obj->refcount);
obj->handle_count = 0;
obj->size = size;
- reservation_object_init(&obj->_resv);
+ dma_resv_init(&obj->_resv);
if (!obj->resv)
obj->resv = &obj->_resv;
EXPORT_SYMBOL(drm_gem_object_lookup);
/**
- * drm_gem_reservation_object_wait - Wait on GEM object's reservation's objects
+ * drm_gem_dma_resv_wait - Wait on GEM object's reservation's objects
* shared and/or exclusive fences.
* @filep: DRM file private date
* @handle: userspace handle
* Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or
* greater than 0 on success.
*/
-long drm_gem_reservation_object_wait(struct drm_file *filep, u32 handle,
+long drm_gem_dma_resv_wait(struct drm_file *filep, u32 handle,
bool wait_all, unsigned long timeout)
{
long ret;
return -EINVAL;
}
- ret = reservation_object_wait_timeout_rcu(obj->resv, wait_all,
+ ret = dma_resv_wait_timeout_rcu(obj->resv, wait_all,
true, timeout);
if (ret == 0)
ret = -ETIME;
return ret;
}
-EXPORT_SYMBOL(drm_gem_reservation_object_wait);
+EXPORT_SYMBOL(drm_gem_dma_resv_wait);
/**
* drm_gem_close_ioctl - implementation of the GEM_CLOSE ioctl
if (obj->filp)
fput(obj->filp);
- reservation_object_fini(&obj->_resv);
+ dma_resv_fini(&obj->_resv);
drm_gem_free_mmap_offset(obj);
}
EXPORT_SYMBOL(drm_gem_object_release);
if (contended != -1) {
struct drm_gem_object *obj = objs[contended];
- ret = reservation_object_lock_slow_interruptible(obj->resv,
+ ret = dma_resv_lock_slow_interruptible(obj->resv,
acquire_ctx);
if (ret) {
ww_acquire_done(acquire_ctx);
if (i == contended)
continue;
- ret = reservation_object_lock_interruptible(objs[i]->resv,
+ ret = dma_resv_lock_interruptible(objs[i]->resv,
acquire_ctx);
if (ret) {
int j;
for (j = 0; j < i; j++)
- reservation_object_unlock(objs[j]->resv);
+ dma_resv_unlock(objs[j]->resv);
if (contended != -1 && contended >= i)
- reservation_object_unlock(objs[contended]->resv);
+ dma_resv_unlock(objs[contended]->resv);
if (ret == -EDEADLK) {
contended = i;
int i;
for (i = 0; i < count; i++)
- reservation_object_unlock(objs[i]->resv);
+ dma_resv_unlock(objs[i]->resv);
ww_acquire_fini(acquire_ctx);
}
if (!write) {
struct dma_fence *fence =
- reservation_object_get_excl_rcu(obj->resv);
+ dma_resv_get_excl_rcu(obj->resv);
return drm_gem_fence_array_add(fence_array, fence);
}
- ret = reservation_object_get_fences_rcu(obj->resv, NULL,
+ ret = dma_resv_get_fences_rcu(obj->resv, NULL,
&fence_count, &fences);
if (ret || !fence_count)
return ret;
#include <linux/dma-buf.h>
#include <linux/dma-fence.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <linux/slab.h>
#include <drm/drm_atomic.h>
return 0;
obj = drm_gem_fb_get_obj(state->fb, 0);
- fence = reservation_object_get_excl_rcu(obj->resv);
+ fence = dma_resv_get_excl_rcu(obj->resv);
drm_atomic_set_fence_for_plane(state, fence);
return 0;
}
if (op & ETNA_PREP_NOSYNC) {
- if (!reservation_object_test_signaled_rcu(obj->resv,
+ if (!dma_resv_test_signaled_rcu(obj->resv,
write))
return -EBUSY;
} else {
unsigned long remain = etnaviv_timeout_to_jiffies(timeout);
- ret = reservation_object_wait_timeout_rcu(obj->resv,
+ ret = dma_resv_wait_timeout_rcu(obj->resv,
write, true, remain);
if (ret <= 0)
return ret == 0 ? -ETIMEDOUT : ret;
static void etnaviv_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
{
struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
- struct reservation_object *robj = obj->resv;
- struct reservation_object_list *fobj;
+ struct dma_resv *robj = obj->resv;
+ struct dma_resv_list *fobj;
struct dma_fence *fence;
unsigned long off = drm_vma_node_start(&obj->vma_node);
#ifndef __ETNAVIV_GEM_H__
#define __ETNAVIV_GEM_H__
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include "etnaviv_cmdbuf.h"
#include "etnaviv_drv.h"
*/
#include <linux/dma-fence-array.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <linux/sync_file.h>
#include "etnaviv_cmdbuf.h"
#include "etnaviv_drv.h"
for (i = 0; i < submit->nr_bos; i++) {
struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
- struct reservation_object *robj = bo->obj->base.resv;
+ struct dma_resv *robj = bo->obj->base.resv;
if (!(bo->flags & ETNA_SUBMIT_BO_WRITE)) {
- ret = reservation_object_reserve_shared(robj, 1);
+ ret = dma_resv_reserve_shared(robj, 1);
if (ret)
return ret;
}
continue;
if (bo->flags & ETNA_SUBMIT_BO_WRITE) {
- ret = reservation_object_get_fences_rcu(robj, &bo->excl,
+ ret = dma_resv_get_fences_rcu(robj, &bo->excl,
&bo->nr_shared,
&bo->shared);
if (ret)
return ret;
} else {
- bo->excl = reservation_object_get_excl_rcu(robj);
+ bo->excl = dma_resv_get_excl_rcu(robj);
}
}
struct drm_gem_object *obj = &submit->bos[i].obj->base;
if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
- reservation_object_add_excl_fence(obj->resv,
+ dma_resv_add_excl_fence(obj->resv,
submit->out_fence);
else
- reservation_object_add_shared_fence(obj->resv,
+ dma_resv_add_shared_fence(obj->resv,
submit->out_fence);
submit_unlock_object(submit, i);
#include <linux/intel-iommu.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <linux/slab.h>
#include <linux/vgaarb.h>
if (ret < 0)
return ret;
- fence = reservation_object_get_excl_rcu(obj->base.resv);
+ fence = dma_resv_get_excl_rcu(obj->base.resv);
if (fence) {
add_rps_boost_after_vblank(new_state->crtc, fence);
dma_fence_put(fence);
{
struct drm_i915_gem_busy *args = data;
struct drm_i915_gem_object *obj;
- struct reservation_object_list *list;
+ struct dma_resv_list *list;
unsigned int i, shared_count;
struct dma_fence *excl;
int err;
* Alternatively, we can trade that extra information on read/write
* activity with
* args->busy =
- * !reservation_object_test_signaled_rcu(obj->resv, true);
+ * !dma_resv_test_signaled_rcu(obj->resv, true);
* to report the overall busyness. This is what the wait-ioctl does.
*
*/
- reservation_object_fences(obj->base.resv, &excl, &list, &shared_count);
+ dma_resv_fences(obj->base.resv, &excl, &list, &shared_count);
/* Translate the exclusive fence to the READ *and* WRITE engine */
args->busy = busy_check_writer(excl);
true, I915_FENCE_TIMEOUT,
I915_FENCE_GFP);
- reservation_object_add_excl_fence(obj->base.resv,
+ dma_resv_add_excl_fence(obj->base.resv,
&clflush->dma);
i915_sw_fence_commit(&clflush->wait);
if (err < 0) {
dma_fence_set_error(&work->dma, err);
} else {
- reservation_object_add_excl_fence(obj->base.resv, &work->dma);
+ dma_resv_add_excl_fence(obj->base.resv, &work->dma);
err = 0;
}
i915_gem_object_unlock(obj);
#include <linux/dma-buf.h>
#include <linux/highmem.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include "i915_drv.h"
#include "i915_gem_object.h"
*/
#include <linux/intel-iommu.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <linux/sync_file.h>
#include <linux/uaccess.h>
goto skip_request;
i915_vma_lock(batch);
- GEM_BUG_ON(!reservation_object_test_signaled_rcu(batch->resv, true));
+ GEM_BUG_ON(!dma_resv_test_signaled_rcu(batch->resv, true));
err = i915_vma_move_to_active(batch, rq, 0);
i915_vma_unlock(batch);
if (err)
if (!eb->reloc_cache.vaddr &&
(DBG_FORCE_RELOC == FORCE_GPU_RELOC ||
- !reservation_object_test_signaled_rcu(vma->resv, true))) {
+ !dma_resv_test_signaled_rcu(vma->resv, true))) {
const unsigned int gen = eb->reloc_cache.gen;
unsigned int len;
u32 *batch;
I915_FENCE_GFP) < 0)
goto err;
- reservation_object_add_excl_fence(obj->base.resv, &stub->dma);
+ dma_resv_add_excl_fence(obj->base.resv, &stub->dma);
return &stub->dma;
__drm_gem_object_put(&obj->base);
}
-#define assert_object_held(obj) reservation_object_assert_held((obj)->base.resv)
+#define assert_object_held(obj) dma_resv_assert_held((obj)->base.resv)
static inline void i915_gem_object_lock(struct drm_i915_gem_object *obj)
{
- reservation_object_lock(obj->base.resv, NULL);
+ dma_resv_lock(obj->base.resv, NULL);
}
static inline int
i915_gem_object_lock_interruptible(struct drm_i915_gem_object *obj)
{
- return reservation_object_lock_interruptible(obj->base.resv, NULL);
+ return dma_resv_lock_interruptible(obj->base.resv, NULL);
}
static inline void i915_gem_object_unlock(struct drm_i915_gem_object *obj)
{
- reservation_object_unlock(obj->base.resv);
+ dma_resv_unlock(obj->base.resv);
}
struct dma_fence *
struct dma_fence *fence;
rcu_read_lock();
- fence = reservation_object_get_excl_rcu(obj->base.resv);
+ fence = dma_resv_get_excl_rcu(obj->base.resv);
rcu_read_unlock();
if (fence && dma_fence_is_i915(fence) && !dma_fence_is_signaled(fence))
}
static long
-i915_gem_object_wait_reservation(struct reservation_object *resv,
+i915_gem_object_wait_reservation(struct dma_resv *resv,
unsigned int flags,
long timeout)
{
unsigned int count, i;
int ret;
- ret = reservation_object_get_fences_rcu(resv,
+ ret = dma_resv_get_fences_rcu(resv,
&excl, &count, &shared);
if (ret)
return ret;
*/
prune_fences = count && timeout >= 0;
} else {
- excl = reservation_object_get_excl_rcu(resv);
+ excl = dma_resv_get_excl_rcu(resv);
}
if (excl && timeout >= 0)
* Opportunistically prune the fences iff we know they have *all* been
* signaled.
*/
- if (prune_fences && reservation_object_trylock(resv)) {
- if (reservation_object_test_signaled_rcu(resv, true))
- reservation_object_add_excl_fence(resv, NULL);
- reservation_object_unlock(resv);
+ if (prune_fences && dma_resv_trylock(resv)) {
+ if (dma_resv_test_signaled_rcu(resv, true))
+ dma_resv_add_excl_fence(resv, NULL);
+ dma_resv_unlock(resv);
}
return timeout;
unsigned int count, i;
int ret;
- ret = reservation_object_get_fences_rcu(obj->base.resv,
+ ret = dma_resv_get_fences_rcu(obj->base.resv,
&excl, &count, &shared);
if (ret)
return ret;
kfree(shared);
} else {
- excl = reservation_object_get_excl_rcu(obj->base.resv);
+ excl = dma_resv_get_excl_rcu(obj->base.resv);
}
if (excl) {
#include <linux/mm_types.h>
#include <linux/perf_event.h>
#include <linux/pm_qos.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <linux/shmem_fs.h>
#include <linux/stackdepot.h>
#include <drm/i915_drm.h>
#include <linux/dma-fence-array.h>
#include <linux/kthread.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <linux/shmem_fs.h>
#include <linux/slab.h>
#include <linux/stop_machine.h>
list_for_each_entry(obj, list, batch_pool_link) {
/* The batches are strictly LRU ordered */
if (i915_gem_object_is_active(obj)) {
- struct reservation_object *resv = obj->base.resv;
+ struct dma_resv *resv = obj->base.resv;
- if (!reservation_object_test_signaled_rcu(resv, true))
+ if (!dma_resv_test_signaled_rcu(resv, true))
break;
i915_retire_requests(pool->engine->i915);
* than replace the existing fence.
*/
if (rcu_access_pointer(resv->fence)) {
- reservation_object_lock(resv, NULL);
- reservation_object_add_excl_fence(resv, NULL);
- reservation_object_unlock(resv);
+ dma_resv_lock(resv, NULL);
+ dma_resv_add_excl_fence(resv, NULL);
+ dma_resv_unlock(resv);
}
}
- GEM_BUG_ON(!reservation_object_test_signaled_rcu(obj->base.resv,
+ GEM_BUG_ON(!dma_resv_test_signaled_rcu(obj->base.resv,
true));
if (obj->base.size >= size)
struct dma_fence **shared;
unsigned int count, i;
- ret = reservation_object_get_fences_rcu(obj->base.resv,
+ ret = dma_resv_get_fences_rcu(obj->base.resv,
&excl, &count, &shared);
if (ret)
return ret;
dma_fence_put(shared[i]);
kfree(shared);
} else {
- excl = reservation_object_get_excl_rcu(obj->base.resv);
+ excl = dma_resv_get_excl_rcu(obj->base.resv);
}
if (excl) {
#include <linux/slab.h>
#include <linux/dma-fence.h>
#include <linux/irq_work.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include "i915_sw_fence.h"
#include "i915_selftest.h"
}
int i915_sw_fence_await_reservation(struct i915_sw_fence *fence,
- struct reservation_object *resv,
+ struct dma_resv *resv,
const struct dma_fence_ops *exclude,
bool write,
unsigned long timeout,
struct dma_fence **shared;
unsigned int count, i;
- ret = reservation_object_get_fences_rcu(resv,
+ ret = dma_resv_get_fences_rcu(resv,
&excl, &count, &shared);
if (ret)
return ret;
dma_fence_put(shared[i]);
kfree(shared);
} else {
- excl = reservation_object_get_excl_rcu(resv);
+ excl = dma_resv_get_excl_rcu(resv);
}
if (ret >= 0 && excl && excl->ops != exclude) {
#include <linux/wait.h>
struct completion;
-struct reservation_object;
+struct dma_resv;
struct i915_sw_fence {
wait_queue_head_t wait;
gfp_t gfp);
int i915_sw_fence_await_reservation(struct i915_sw_fence *fence,
- struct reservation_object *resv,
+ struct dma_resv *resv,
const struct dma_fence_ops *exclude,
bool write,
unsigned long timeout,
return;
/* Prune the shared fence arrays iff completely idle (inc. external) */
- if (reservation_object_trylock(obj->base.resv)) {
- if (reservation_object_test_signaled_rcu(obj->base.resv, true))
- reservation_object_add_excl_fence(obj->base.resv, NULL);
- reservation_object_unlock(obj->base.resv);
+ if (dma_resv_trylock(obj->base.resv)) {
+ if (dma_resv_test_signaled_rcu(obj->base.resv, true))
+ dma_resv_add_excl_fence(obj->base.resv, NULL);
+ dma_resv_unlock(obj->base.resv);
}
/*
struct i915_request *rq,
unsigned int flags)
{
- struct reservation_object *resv = vma->resv;
+ struct dma_resv *resv = vma->resv;
/*
* Ignore errors from failing to allocate the new fence, we can't
* synchronisation leading to rendering corruption.
*/
if (flags & EXEC_OBJECT_WRITE)
- reservation_object_add_excl_fence(resv, &rq->fence);
- else if (reservation_object_reserve_shared(resv, 1) == 0)
- reservation_object_add_shared_fence(resv, &rq->fence);
+ dma_resv_add_excl_fence(resv, &rq->fence);
+ else if (dma_resv_reserve_shared(resv, 1) == 0)
+ dma_resv_add_shared_fence(resv, &rq->fence);
}
int i915_vma_move_to_active(struct i915_vma *vma,
struct i915_address_space *vm;
const struct i915_vma_ops *ops;
struct i915_fence_reg *fence;
- struct reservation_object *resv; /** Alias of obj->resv */
+ struct dma_resv *resv; /** Alias of obj->resv */
struct sg_table *pages;
void __iomem *iomap;
void *private; /* owned by creator */
void i915_vma_reopen(struct i915_vma *vma);
void i915_vma_destroy(struct i915_vma *vma);
-#define assert_vma_held(vma) reservation_object_assert_held((vma)->resv)
+#define assert_vma_held(vma) dma_resv_assert_held((vma)->resv)
static inline void i915_vma_lock(struct i915_vma *vma)
{
- reservation_object_lock(vma->resv, NULL);
+ dma_resv_lock(vma->resv, NULL);
}
static inline void i915_vma_unlock(struct i915_vma *vma)
{
- reservation_object_unlock(vma->resv);
+ dma_resv_unlock(vma->resv);
}
int __i915_vma_do_pin(struct i915_vma *vma,
int err = 0;
if (!write) {
- err = reservation_object_reserve_shared(bo->gem.resv, 1);
+ err = dma_resv_reserve_shared(bo->gem.resv, 1);
if (err)
return err;
}
for (i = 0; i < submit->nr_bos; i++) {
if (submit->bos[i].flags & LIMA_SUBMIT_BO_WRITE)
- reservation_object_add_excl_fence(bos[i]->gem.resv, fence);
+ dma_resv_add_excl_fence(bos[i]->gem.resv, fence);
else
- reservation_object_add_shared_fence(bos[i]->gem.resv, fence);
+ dma_resv_add_shared_fence(bos[i]->gem.resv, fence);
}
lima_gem_unlock_bos(bos, submit->nr_bos, &ctx);
timeout = drm_timeout_abs_to_jiffies(timeout_ns);
- ret = drm_gem_reservation_object_wait(file, handle, write, timeout);
+ ret = drm_gem_dma_resv_wait(file, handle, write, timeout);
if (ret == 0)
ret = timeout ? -ETIMEDOUT : -EBUSY;
*/
#include <linux/dma-buf.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <drm/drm_modeset_helper.h>
#include <drm/drm_fb_helper.h>
int msm_gem_sync_object(struct drm_gem_object *obj,
struct msm_fence_context *fctx, bool exclusive)
{
- struct reservation_object_list *fobj;
+ struct dma_resv_list *fobj;
struct dma_fence *fence;
int i, ret;
- fobj = reservation_object_get_list(obj->resv);
+ fobj = dma_resv_get_list(obj->resv);
if (!fobj || (fobj->shared_count == 0)) {
- fence = reservation_object_get_excl(obj->resv);
+ fence = dma_resv_get_excl(obj->resv);
/* don't need to wait on our own fences, since ring is fifo */
if (fence && (fence->context != fctx->context)) {
ret = dma_fence_wait(fence, true);
for (i = 0; i < fobj->shared_count; i++) {
fence = rcu_dereference_protected(fobj->shared[i],
- reservation_object_held(obj->resv));
+ dma_resv_held(obj->resv));
if (fence->context != fctx->context) {
ret = dma_fence_wait(fence, true);
if (ret)
WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED);
msm_obj->gpu = gpu;
if (exclusive)
- reservation_object_add_excl_fence(obj->resv, fence);
+ dma_resv_add_excl_fence(obj->resv, fence);
else
- reservation_object_add_shared_fence(obj->resv, fence);
+ dma_resv_add_shared_fence(obj->resv, fence);
list_del_init(&msm_obj->mm_list);
list_add_tail(&msm_obj->mm_list, &gpu->active_list);
}
op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout);
long ret;
- ret = reservation_object_wait_timeout_rcu(obj->resv, write,
+ ret = dma_resv_wait_timeout_rcu(obj->resv, write,
true, remain);
if (ret == 0)
return remain == 0 ? -EBUSY : -ETIMEDOUT;
void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
- struct reservation_object *robj = obj->resv;
- struct reservation_object_list *fobj;
+ struct dma_resv *robj = obj->resv;
+ struct dma_resv_list *fobj;
struct dma_fence *fence;
struct msm_gem_vma *vma;
uint64_t off = drm_vma_node_start(&obj->vma_node);
#define __MSM_GEM_H__
#include <linux/kref.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include "msm_drv.h"
/* Additional internal-use only BO flags: */
* strange place to call it. OTOH this is a
* convenient can-fail point to hook it in.
*/
- ret = reservation_object_reserve_shared(msm_obj->base.resv,
+ ret = dma_resv_reserve_shared(msm_obj->base.resv,
1);
if (ret)
return ret;
#include <linux/of_graph.h>
#include <linux/of_reserved_mem.h>
#include <linux/pm_runtime.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <linux/spinlock.h>
#include <drm/drm_atomic.h>
asyw->image.handle[0] = ctxdma->object.handle;
}
- asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.base.resv);
+ asyw->state.fence = dma_resv_get_excl_rcu(fb->nvbo->bo.base.resv);
asyw->image.offset[0] = fb->nvbo->bo.offset;
if (wndw->func->prepare) {
int
nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align,
uint32_t flags, uint32_t tile_mode, uint32_t tile_flags,
- struct sg_table *sg, struct reservation_object *robj,
+ struct sg_table *sg, struct dma_resv *robj,
struct nouveau_bo **pnvbo)
{
struct nouveau_drm *drm = cli->drm;
{
struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
struct drm_device *dev = drm->dev;
- struct dma_fence *fence = reservation_object_get_excl(bo->base.resv);
+ struct dma_fence *fence = dma_resv_get_excl(bo->base.resv);
nv10_bo_put_tile_region(dev, *old_tile, fence);
*old_tile = new_tile;
void
nouveau_bo_fence(struct nouveau_bo *nvbo, struct nouveau_fence *fence, bool exclusive)
{
- struct reservation_object *resv = nvbo->bo.base.resv;
+ struct dma_resv *resv = nvbo->bo.base.resv;
if (exclusive)
- reservation_object_add_excl_fence(resv, &fence->base);
+ dma_resv_add_excl_fence(resv, &fence->base);
else if (fence)
- reservation_object_add_shared_fence(resv, &fence->base);
+ dma_resv_add_shared_fence(resv, &fence->base);
}
struct ttm_bo_driver nouveau_bo_driver = {
void nouveau_bo_move_init(struct nouveau_drm *);
int nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags,
u32 tile_mode, u32 tile_flags, struct sg_table *sg,
- struct reservation_object *robj,
+ struct dma_resv *robj,
struct nouveau_bo **);
int nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
int nouveau_bo_unpin(struct nouveau_bo *);
{
struct nouveau_fence_chan *fctx = chan->fence;
struct dma_fence *fence;
- struct reservation_object *resv = nvbo->bo.base.resv;
- struct reservation_object_list *fobj;
+ struct dma_resv *resv = nvbo->bo.base.resv;
+ struct dma_resv_list *fobj;
struct nouveau_fence *f;
int ret = 0, i;
if (!exclusive) {
- ret = reservation_object_reserve_shared(resv, 1);
+ ret = dma_resv_reserve_shared(resv, 1);
if (ret)
return ret;
}
- fobj = reservation_object_get_list(resv);
- fence = reservation_object_get_excl(resv);
+ fobj = dma_resv_get_list(resv);
+ fence = dma_resv_get_excl(resv);
if (fence && (!exclusive || !fobj || !fobj->shared_count)) {
struct nouveau_channel *prev = NULL;
bool must_wait = true;
fence = rcu_dereference_protected(fobj->shared[i],
- reservation_object_held(resv));
+ dma_resv_held(resv));
f = nouveau_local_fence(fence, chan->drm);
if (f) {
return -ENOENT;
nvbo = nouveau_gem_object(gem);
- lret = reservation_object_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
+ lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
no_wait ? 0 : 30 * HZ);
if (!lret)
ret = -EBUSY;
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_bo *nvbo;
- struct reservation_object *robj = attach->dmabuf->resv;
+ struct dma_resv *robj = attach->dmabuf->resv;
u32 flags = 0;
int ret;
flags = TTM_PL_FLAG_TT;
- reservation_object_lock(robj, NULL);
+ dma_resv_lock(robj, NULL);
ret = nouveau_bo_new(&drm->client, attach->dmabuf->size, 0, flags, 0, 0,
sg, robj, &nvbo);
- reservation_object_unlock(robj);
+ dma_resv_unlock(robj);
if (ret)
return ERR_PTR(ret);
if (!gem_obj)
return -ENOENT;
- ret = reservation_object_wait_timeout_rcu(gem_obj->resv, true,
+ ret = dma_resv_wait_timeout_rcu(gem_obj->resv, true,
true, timeout);
if (!ret)
ret = timeout ? -ETIMEDOUT : -EBUSY;
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <drm/gpu_scheduler.h>
#include <drm/panfrost_drm.h>
int i;
for (i = 0; i < bo_count; i++)
- implicit_fences[i] = reservation_object_get_excl_rcu(bos[i]->resv);
+ implicit_fences[i] = dma_resv_get_excl_rcu(bos[i]->resv);
}
static void panfrost_attach_object_fences(struct drm_gem_object **bos,
int i;
for (i = 0; i < bo_count; i++)
- reservation_object_add_excl_fence(bos[i]->resv, fence);
+ dma_resv_add_excl_fence(bos[i]->resv, fence);
}
int panfrost_job_push(struct panfrost_job *job)
struct qxl_bo *bo;
list_for_each_entry(bo, &qdev->gem.objects, list) {
- struct reservation_object_list *fobj;
+ struct dma_resv_list *fobj;
int rel;
rcu_read_lock();
return ret;
}
- ret = reservation_object_reserve_shared(bo->tbo.base.resv, 1);
+ ret = dma_resv_reserve_shared(bo->tbo.base.resv, 1);
if (ret)
return ret;
list_for_each_entry(entry, &release->bos, head) {
bo = entry->bo;
- reservation_object_add_shared_fence(bo->base.resv, &release->base);
+ dma_resv_add_shared_fence(bo->base.resv, &release->base);
ttm_bo_add_to_lru(bo);
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
}
spin_unlock(&glob->lru_lock);
ww_acquire_fini(&release->ticket);
struct radeon_fence *cik_copy_cpdma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_fence *fence;
struct radeon_sync sync;
struct radeon_fence *cik_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_fence *fence;
struct radeon_sync sync;
uint64_t src_offset,
uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_fence *fence;
struct radeon_sync sync;
uint64_t src_offset,
uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
struct radeon_fence *fence;
uint64_t src_offset,
uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
struct radeon_fence *fence;
struct radeon_fence *r600_copy_cpdma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_fence *fence;
struct radeon_sync sync;
struct radeon_fence *r600_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_fence *fence;
struct radeon_sync sync;
struct radeon_fence *fence);
int radeon_sync_resv(struct radeon_device *rdev,
struct radeon_sync *sync,
- struct reservation_object *resv,
+ struct dma_resv *resv,
bool shared);
int radeon_sync_rings(struct radeon_device *rdev,
struct radeon_sync *sync,
uint64_t src_offset,
uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
u32 blit_ring_index;
struct radeon_fence *(*dma)(struct radeon_device *rdev,
uint64_t src_offset,
uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
u32 dma_ring_index;
/* method used for bo copy */
struct radeon_fence *(*copy)(struct radeon_device *rdev,
uint64_t src_offset,
uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
/* ring used for bo copies */
u32 copy_ring_index;
} copy;
uint64_t src_offset,
uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
int r100_set_surface_reg(struct radeon_device *rdev, int reg,
uint32_t tiling_flags, uint32_t pitch,
uint32_t offset, uint32_t obj_size);
uint64_t src_offset,
uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
void r200_set_safe_registers(struct radeon_device *rdev);
/*
struct radeon_fence *r600_copy_cpdma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
struct radeon_fence *r600_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
void r600_hpd_init(struct radeon_device *rdev);
void r600_hpd_fini(struct radeon_device *rdev);
bool r600_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd);
struct radeon_fence *rv770_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
u32 rv770_get_xclk(struct radeon_device *rdev);
int rv770_set_uvd_clocks(struct radeon_device *rdev, u32 vclk, u32 dclk);
int rv770_get_temp(struct radeon_device *rdev);
struct radeon_fence *evergreen_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
int evergreen_get_temp(struct radeon_device *rdev);
int evergreen_get_allowed_info_register(struct radeon_device *rdev,
u32 reg, u32 *val);
struct radeon_fence *si_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
void si_dma_vm_copy_pages(struct radeon_device *rdev,
struct radeon_ib *ib,
struct radeon_fence *cik_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
struct radeon_fence *cik_copy_cpdma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv);
+ struct dma_resv *resv);
int cik_sdma_ring_test(struct radeon_device *rdev, struct radeon_ring *ring);
int cik_sdma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring);
bool cik_sdma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring);
static int radeon_benchmark_do_move(struct radeon_device *rdev, unsigned size,
uint64_t saddr, uint64_t daddr,
int flag, int n,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
unsigned long start_jiffies;
unsigned long end_jiffies;
int r;
list_for_each_entry(reloc, &p->validated, tv.head) {
- struct reservation_object *resv;
+ struct dma_resv *resv;
resv = reloc->robj->tbo.base.resv;
r = radeon_sync_resv(p->rdev, &p->ib.sync, resv,
DRM_ERROR("failed to pin new rbo buffer before flip\n");
goto cleanup;
}
- work->fence = dma_fence_get(reservation_object_get_excl(new_rbo->tbo.base.resv));
+ work->fence = dma_fence_get(dma_resv_get_excl(new_rbo->tbo.base.resv));
radeon_bo_get_tiling_flags(new_rbo, &tiling_flags, NULL);
radeon_bo_unreserve(new_rbo);
}
if (domain == RADEON_GEM_DOMAIN_CPU) {
/* Asking for cpu access wait for object idle */
- r = reservation_object_wait_timeout_rcu(robj->tbo.base.resv, true, true, 30 * HZ);
+ r = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true, 30 * HZ);
if (!r)
r = -EBUSY;
}
robj = gem_to_radeon_bo(gobj);
- r = reservation_object_test_signaled_rcu(robj->tbo.base.resv, true);
+ r = dma_resv_test_signaled_rcu(robj->tbo.base.resv, true);
if (r == 0)
r = -EBUSY;
else
}
robj = gem_to_radeon_bo(gobj);
- ret = reservation_object_wait_timeout_rcu(robj->tbo.base.resv, true, true, 30 * HZ);
+ ret = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true, 30 * HZ);
if (ret == 0)
r = -EBUSY;
else if (ret < 0)
continue;
}
- r = reservation_object_wait_timeout_rcu(bo->tbo.base.resv,
+ r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv,
true, false, MAX_SCHEDULE_TIMEOUT);
if (r <= 0)
DRM_ERROR("(%ld) failed to wait for user bo\n", r);
int radeon_bo_create(struct radeon_device *rdev,
unsigned long size, int byte_align, bool kernel,
u32 domain, u32 flags, struct sg_table *sg,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct radeon_bo **bo_ptr)
{
struct radeon_bo *bo;
int steal;
int i;
- reservation_object_assert_held(bo->tbo.base.resv);
+ dma_resv_assert_held(bo->tbo.base.resv);
if (!bo->tiling_flags)
return 0;
uint32_t *tiling_flags,
uint32_t *pitch)
{
- reservation_object_assert_held(bo->tbo.base.resv);
+ dma_resv_assert_held(bo->tbo.base.resv);
if (tiling_flags)
*tiling_flags = bo->tiling_flags;
bool force_drop)
{
if (!force_drop)
- reservation_object_assert_held(bo->tbo.base.resv);
+ dma_resv_assert_held(bo->tbo.base.resv);
if (!(bo->tiling_flags & RADEON_TILING_SURFACE))
return 0;
void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
bool shared)
{
- struct reservation_object *resv = bo->tbo.base.resv;
+ struct dma_resv *resv = bo->tbo.base.resv;
if (shared)
- reservation_object_add_shared_fence(resv, &fence->base);
+ dma_resv_add_shared_fence(resv, &fence->base);
else
- reservation_object_add_excl_fence(resv, &fence->base);
+ dma_resv_add_excl_fence(resv, &fence->base);
}
unsigned long size, int byte_align,
bool kernel, u32 domain, u32 flags,
struct sg_table *sg,
- struct reservation_object *resv,
+ struct dma_resv *resv,
struct radeon_bo **bo_ptr);
extern int radeon_bo_kmap(struct radeon_bo *bo, void **ptr);
extern void radeon_bo_kunmap(struct radeon_bo *bo);
struct dma_buf_attachment *attach,
struct sg_table *sg)
{
- struct reservation_object *resv = attach->dmabuf->resv;
+ struct dma_resv *resv = attach->dmabuf->resv;
struct radeon_device *rdev = dev->dev_private;
struct radeon_bo *bo;
int ret;
- reservation_object_lock(resv, NULL);
+ dma_resv_lock(resv, NULL);
ret = radeon_bo_create(rdev, attach->dmabuf->size, PAGE_SIZE, false,
RADEON_GEM_DOMAIN_GTT, 0, sg, resv, &bo);
- reservation_object_unlock(resv);
+ dma_resv_unlock(resv);
if (ret)
return ERR_PTR(ret);
*/
int radeon_sync_resv(struct radeon_device *rdev,
struct radeon_sync *sync,
- struct reservation_object *resv,
+ struct dma_resv *resv,
bool shared)
{
- struct reservation_object_list *flist;
+ struct dma_resv_list *flist;
struct dma_fence *f;
struct radeon_fence *fence;
unsigned i;
int r = 0;
/* always sync to the exclusive fence */
- f = reservation_object_get_excl(resv);
+ f = dma_resv_get_excl(resv);
fence = f ? to_radeon_fence(f) : NULL;
if (fence && fence->rdev == rdev)
radeon_sync_fence(sync, fence);
else if (f)
r = dma_fence_wait(f, true);
- flist = reservation_object_get_list(resv);
+ flist = dma_resv_get_list(resv);
if (shared || !flist || r)
return r;
for (i = 0; i < flist->shared_count; ++i) {
f = rcu_dereference_protected(flist->shared[i],
- reservation_object_held(resv));
+ dma_resv_held(resv));
fence = to_radeon_fence(f);
if (fence && fence->rdev == rdev)
radeon_sync_fence(sync, fence);
return -EINVAL;
}
- f = reservation_object_get_excl(bo->tbo.base.resv);
+ f = dma_resv_get_excl(bo->tbo.base.resv);
if (f) {
r = radeon_fence_wait((struct radeon_fence *)f, false);
if (r) {
int r;
radeon_sync_resv(rdev, &ib->sync, pt->tbo.base.resv, true);
- r = reservation_object_reserve_shared(pt->tbo.base.resv, 1);
+ r = dma_resv_reserve_shared(pt->tbo.base.resv, 1);
if (r)
return r;
struct radeon_fence *rv770_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_fence *fence;
struct radeon_sync sync;
struct radeon_fence *si_copy_dma(struct radeon_device *rdev,
uint64_t src_offset, uint64_t dst_offset,
unsigned num_gpu_pages,
- struct reservation_object *resv)
+ struct dma_resv *resv)
{
struct radeon_fence *fence;
struct radeon_sync sync;
#include <linux/file.h>
#include <linux/module.h>
#include <linux/atomic.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
static void ttm_bo_global_kobj_release(struct kobject *kobj);
atomic_dec(&bo->bdev->glob->bo_count);
dma_fence_put(bo->moving);
if (!ttm_bo_uses_embedded_gem_object(bo))
- reservation_object_fini(&bo->base._resv);
+ dma_resv_fini(&bo->base._resv);
mutex_destroy(&bo->wu_mutex);
bo->destroy(bo);
ttm_mem_global_free(bdev->glob->mem_glob, acc_size);
struct ttm_bo_device *bdev = bo->bdev;
struct ttm_mem_type_manager *man;
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
if (!list_empty(&bo->lru))
return;
void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo,
struct ttm_lru_bulk_move *bulk)
{
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
ttm_bo_del_from_lru(bo);
ttm_bo_add_to_lru(bo);
if (!pos->first)
continue;
- reservation_object_assert_held(pos->first->base.resv);
- reservation_object_assert_held(pos->last->base.resv);
+ dma_resv_assert_held(pos->first->base.resv);
+ dma_resv_assert_held(pos->last->base.resv);
man = &pos->first->bdev->man[TTM_PL_TT];
list_bulk_move_tail(&man->lru[i], &pos->first->lru,
if (!pos->first)
continue;
- reservation_object_assert_held(pos->first->base.resv);
- reservation_object_assert_held(pos->last->base.resv);
+ dma_resv_assert_held(pos->first->base.resv);
+ dma_resv_assert_held(pos->last->base.resv);
man = &pos->first->bdev->man[TTM_PL_VRAM];
list_bulk_move_tail(&man->lru[i], &pos->first->lru,
if (!pos->first)
continue;
- reservation_object_assert_held(pos->first->base.resv);
- reservation_object_assert_held(pos->last->base.resv);
+ dma_resv_assert_held(pos->first->base.resv);
+ dma_resv_assert_held(pos->last->base.resv);
lru = &pos->first->bdev->glob->swap_lru[i];
list_bulk_move_tail(lru, &pos->first->swap, &pos->last->swap);
if (bo->base.resv == &bo->base._resv)
return 0;
- BUG_ON(!reservation_object_trylock(&bo->base._resv));
+ BUG_ON(!dma_resv_trylock(&bo->base._resv));
- r = reservation_object_copy_fences(&bo->base._resv, bo->base.resv);
+ r = dma_resv_copy_fences(&bo->base._resv, bo->base.resv);
if (r)
- reservation_object_unlock(&bo->base._resv);
+ dma_resv_unlock(&bo->base._resv);
return r;
}
static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo)
{
- struct reservation_object_list *fobj;
+ struct dma_resv_list *fobj;
struct dma_fence *fence;
int i;
- fobj = reservation_object_get_list(&bo->base._resv);
- fence = reservation_object_get_excl(&bo->base._resv);
+ fobj = dma_resv_get_list(&bo->base._resv);
+ fence = dma_resv_get_excl(&bo->base._resv);
if (fence && !fence->ops->signaled)
dma_fence_enable_sw_signaling(fence);
for (i = 0; fobj && i < fobj->shared_count; ++i) {
fence = rcu_dereference_protected(fobj->shared[i],
- reservation_object_held(bo->base.resv));
+ dma_resv_held(bo->base.resv));
if (!fence->ops->signaled)
dma_fence_enable_sw_signaling(fence);
/* Last resort, if we fail to allocate memory for the
* fences block for the BO to become idle
*/
- reservation_object_wait_timeout_rcu(bo->base.resv, true, false,
+ dma_resv_wait_timeout_rcu(bo->base.resv, true, false,
30 * HZ);
spin_lock(&glob->lru_lock);
goto error;
}
spin_lock(&glob->lru_lock);
- ret = reservation_object_trylock(bo->base.resv) ? 0 : -EBUSY;
+ ret = dma_resv_trylock(bo->base.resv) ? 0 : -EBUSY;
if (!ret) {
- if (reservation_object_test_signaled_rcu(&bo->base._resv, true)) {
+ if (dma_resv_test_signaled_rcu(&bo->base._resv, true)) {
ttm_bo_del_from_lru(bo);
spin_unlock(&glob->lru_lock);
if (bo->base.resv != &bo->base._resv)
- reservation_object_unlock(&bo->base._resv);
+ dma_resv_unlock(&bo->base._resv);
ttm_bo_cleanup_memtype_use(bo);
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
return;
}
ttm_bo_add_to_lru(bo);
}
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
}
if (bo->base.resv != &bo->base._resv)
- reservation_object_unlock(&bo->base._resv);
+ dma_resv_unlock(&bo->base._resv);
error:
kref_get(&bo->list_kref);
bool unlock_resv)
{
struct ttm_bo_global *glob = bo->bdev->glob;
- struct reservation_object *resv;
+ struct dma_resv *resv;
int ret;
if (unlikely(list_empty(&bo->ddestroy)))
else
resv = &bo->base._resv;
- if (reservation_object_test_signaled_rcu(resv, true))
+ if (dma_resv_test_signaled_rcu(resv, true))
ret = 0;
else
ret = -EBUSY;
long lret;
if (unlock_resv)
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
spin_unlock(&glob->lru_lock);
- lret = reservation_object_wait_timeout_rcu(resv, true,
+ lret = dma_resv_wait_timeout_rcu(resv, true,
interruptible,
30 * HZ);
return -EBUSY;
spin_lock(&glob->lru_lock);
- if (unlock_resv && !reservation_object_trylock(bo->base.resv)) {
+ if (unlock_resv && !dma_resv_trylock(bo->base.resv)) {
/*
* We raced, and lost, someone else holds the reservation now,
* and is probably busy in ttm_bo_cleanup_memtype_use.
if (ret || unlikely(list_empty(&bo->ddestroy))) {
if (unlock_resv)
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
spin_unlock(&glob->lru_lock);
return ret;
}
ttm_bo_cleanup_memtype_use(bo);
if (unlock_resv)
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
return 0;
}
if (remove_all || bo->base.resv != &bo->base._resv) {
spin_unlock(&glob->lru_lock);
- reservation_object_lock(bo->base.resv, NULL);
+ dma_resv_lock(bo->base.resv, NULL);
spin_lock(&glob->lru_lock);
ttm_bo_cleanup_refs(bo, false, !remove_all, true);
- } else if (reservation_object_trylock(bo->base.resv)) {
+ } else if (dma_resv_trylock(bo->base.resv)) {
ttm_bo_cleanup_refs(bo, false, !remove_all, true);
} else {
spin_unlock(&glob->lru_lock);
struct ttm_placement placement;
int ret = 0;
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
placement.num_placement = 0;
placement.num_busy_placement = 0;
bool ret = false;
if (bo->base.resv == ctx->resv) {
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
if (ctx->flags & TTM_OPT_FLAG_ALLOW_RES_EVICT
|| !list_empty(&bo->ddestroy))
ret = true;
if (busy)
*busy = false;
} else {
- ret = reservation_object_trylock(bo->base.resv);
+ ret = dma_resv_trylock(bo->base.resv);
*locked = ret;
if (busy)
*busy = !ret;
return -EBUSY;
if (ctx->interruptible)
- r = reservation_object_lock_interruptible(busy_bo->base.resv,
+ r = dma_resv_lock_interruptible(busy_bo->base.resv,
ticket);
else
- r = reservation_object_lock(busy_bo->base.resv, ticket);
+ r = dma_resv_lock(busy_bo->base.resv, ticket);
/*
* TODO: It would be better to keep the BO locked until allocation is at
* of TTM.
*/
if (!r)
- reservation_object_unlock(busy_bo->base.resv);
+ dma_resv_unlock(busy_bo->base.resv);
return r == -EDEADLK ? -EBUSY : r;
}
if (!ttm_bo_evict_swapout_allowable(bo, ctx, &locked,
&busy)) {
if (busy && !busy_bo && ticket !=
- reservation_object_locking_ctx(bo->base.resv))
+ dma_resv_locking_ctx(bo->base.resv))
busy_bo = bo;
continue;
}
if (place && !bdev->driver->eviction_valuable(bo,
place)) {
if (locked)
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
continue;
}
break;
spin_unlock(&man->move_lock);
if (fence) {
- reservation_object_add_shared_fence(bo->base.resv, fence);
+ dma_resv_add_shared_fence(bo->base.resv, fence);
- ret = reservation_object_reserve_shared(bo->base.resv, 1);
+ ret = dma_resv_reserve_shared(bo->base.resv, 1);
if (unlikely(ret)) {
dma_fence_put(fence);
return ret;
struct ww_acquire_ctx *ticket;
int ret;
- ticket = reservation_object_locking_ctx(bo->base.resv);
+ ticket = dma_resv_locking_ctx(bo->base.resv);
do {
ret = (*man->func->get_node)(man, bo, place, mem);
if (unlikely(ret != 0))
bool type_found = false;
int i, ret;
- ret = reservation_object_reserve_shared(bo->base.resv, 1);
+ ret = dma_resv_reserve_shared(bo->base.resv, 1);
if (unlikely(ret))
return ret;
int ret = 0;
struct ttm_mem_reg mem;
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
mem.num_pages = bo->num_pages;
mem.size = mem.num_pages << PAGE_SHIFT;
int ret;
uint32_t new_flags;
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
/*
* Check whether we need to move buffer.
*/
struct ttm_operation_ctx *ctx,
size_t acc_size,
struct sg_table *sg,
- struct reservation_object *resv,
+ struct dma_resv *resv,
void (*destroy) (struct ttm_buffer_object *))
{
int ret = 0;
bo->sg = sg;
if (resv) {
bo->base.resv = resv;
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
} else {
bo->base.resv = &bo->base._resv;
}
* bo.gem is not initialized, so we have to setup the
* struct elements we want use regardless.
*/
- reservation_object_init(&bo->base._resv);
+ dma_resv_init(&bo->base._resv);
drm_vma_node_reset(&bo->base.vma_node);
}
atomic_inc(&bo->bdev->glob->bo_count);
* since otherwise lockdep will be angered in radeon.
*/
if (!resv) {
- locked = reservation_object_trylock(bo->base.resv);
+ locked = dma_resv_trylock(bo->base.resv);
WARN_ON(!locked);
}
bool interruptible,
size_t acc_size,
struct sg_table *sg,
- struct reservation_object *resv,
+ struct dma_resv *resv,
void (*destroy) (struct ttm_buffer_object *))
{
struct ttm_operation_ctx ctx = { interruptible, false };
long timeout = 15 * HZ;
if (no_wait) {
- if (reservation_object_test_signaled_rcu(bo->base.resv, true))
+ if (dma_resv_test_signaled_rcu(bo->base.resv, true))
return 0;
else
return -EBUSY;
}
- timeout = reservation_object_wait_timeout_rcu(bo->base.resv, true,
+ timeout = dma_resv_wait_timeout_rcu(bo->base.resv, true,
interruptible, timeout);
if (timeout < 0)
return timeout;
if (timeout == 0)
return -EBUSY;
- reservation_object_add_excl_fence(bo->base.resv, NULL);
+ dma_resv_add_excl_fence(bo->base.resv, NULL);
return 0;
}
EXPORT_SYMBOL(ttm_bo_wait);
* already swapped buffer.
*/
if (locked)
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
kref_put(&bo->list_kref, ttm_bo_release_list);
return ret;
}
ret = mutex_lock_interruptible(&bo->wu_mutex);
if (unlikely(ret != 0))
return -ERESTARTSYS;
- if (!reservation_object_is_locked(bo->base.resv))
+ if (!dma_resv_is_locked(bo->base.resv))
goto out_unlock;
- ret = reservation_object_lock_interruptible(bo->base.resv, NULL);
+ ret = dma_resv_lock_interruptible(bo->base.resv, NULL);
if (ret == -EINTR)
ret = -ERESTARTSYS;
if (unlikely(ret != 0))
goto out_unlock;
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
out_unlock:
mutex_unlock(&bo->wu_mutex);
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/module.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
struct ttm_transfer_obj {
struct ttm_buffer_object base;
fbo->base.destroy = &ttm_transfered_destroy;
fbo->base.acc_size = 0;
fbo->base.base.resv = &fbo->base.base._resv;
- reservation_object_init(fbo->base.base.resv);
- ret = reservation_object_trylock(fbo->base.base.resv);
+ dma_resv_init(fbo->base.base.resv);
+ ret = dma_resv_trylock(fbo->base.base.resv);
WARN_ON(!ret);
*new_obj = &fbo->base;
int ret;
struct ttm_buffer_object *ghost_obj;
- reservation_object_add_excl_fence(bo->base.resv, fence);
+ dma_resv_add_excl_fence(bo->base.resv, fence);
if (evict) {
ret = ttm_bo_wait(bo, false, false);
if (ret)
if (ret)
return ret;
- reservation_object_add_excl_fence(ghost_obj->base.resv, fence);
+ dma_resv_add_excl_fence(ghost_obj->base.resv, fence);
/**
* If we're not moving to fixed memory, the TTM object
int ret;
- reservation_object_add_excl_fence(bo->base.resv, fence);
+ dma_resv_add_excl_fence(bo->base.resv, fence);
if (!evict) {
struct ttm_buffer_object *ghost_obj;
if (ret)
return ret;
- reservation_object_add_excl_fence(ghost_obj->base.resv, fence);
+ dma_resv_add_excl_fence(ghost_obj->base.resv, fence);
/**
* If we're not moving to fixed memory, the TTM object
if (ret)
return ret;
- ret = reservation_object_copy_fences(ghost->base.resv, bo->base.resv);
+ ret = dma_resv_copy_fences(ghost->base.resv, bo->base.resv);
/* Last resort, wait for the BO to be idle when we are OOM */
if (ret)
ttm_bo_wait(bo, false, false);
ttm_bo_get(bo);
up_read(&vmf->vma->vm_mm->mmap_sem);
(void) dma_fence_wait(bo->moving, true);
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
ttm_bo_put(bo);
goto out_unlock;
}
* for reserve, and if it fails, retry the fault after waiting
* for the buffer to become unreserved.
*/
- if (unlikely(!reservation_object_trylock(bo->base.resv))) {
+ if (unlikely(!dma_resv_trylock(bo->base.resv))) {
if (vmf->flags & FAULT_FLAG_ALLOW_RETRY) {
if (!(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) {
ttm_bo_get(bo);
out_io_unlock:
ttm_mem_io_unlock(man);
out_unlock:
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
return ret;
}
list_for_each_entry_continue_reverse(entry, list, head) {
struct ttm_buffer_object *bo = entry->bo;
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
}
}
if (list_empty(&bo->lru))
ttm_bo_add_to_lru(bo);
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
}
spin_unlock(&glob->lru_lock);
ret = __ttm_bo_reserve(bo, intr, (ticket == NULL), ticket);
if (!ret && unlikely(atomic_read(&bo->cpu_writers) > 0)) {
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
ret = -EBUSY;
if (!entry->num_shared)
continue;
- ret = reservation_object_reserve_shared(bo->base.resv,
+ ret = dma_resv_reserve_shared(bo->base.resv,
entry->num_shared);
if (!ret)
continue;
if (ret == -EDEADLK) {
if (intr) {
- ret = reservation_object_lock_slow_interruptible(bo->base.resv,
+ ret = dma_resv_lock_slow_interruptible(bo->base.resv,
ticket);
} else {
- reservation_object_lock_slow(bo->base.resv, ticket);
+ dma_resv_lock_slow(bo->base.resv, ticket);
ret = 0;
}
}
if (!ret && entry->num_shared)
- ret = reservation_object_reserve_shared(bo->base.resv,
+ ret = dma_resv_reserve_shared(bo->base.resv,
entry->num_shared);
if (unlikely(ret != 0)) {
list_for_each_entry(entry, list, head) {
bo = entry->bo;
if (entry->num_shared)
- reservation_object_add_shared_fence(bo->base.resv, fence);
+ dma_resv_add_shared_fence(bo->base.resv, fence);
else
- reservation_object_add_excl_fence(bo->base.resv, fence);
+ dma_resv_add_excl_fence(bo->base.resv, fence);
if (list_empty(&bo->lru))
ttm_bo_add_to_lru(bo);
else
ttm_bo_move_to_lru_tail(bo, NULL);
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
}
spin_unlock(&glob->lru_lock);
if (ticket)
struct ttm_bo_device *bdev = bo->bdev;
uint32_t page_flags = 0;
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
if (bdev->need_dma32)
page_flags |= TTM_PAGE_FLAG_DMA32;
if (args->pad != 0)
return -EINVAL;
- ret = drm_gem_reservation_object_wait(file_priv, args->handle,
+ ret = drm_gem_dma_resv_wait(file_priv, args->handle,
true, timeout_jiffies);
/* Decrement the user's timeout, in case we got interrupted
for (i = 0; i < job->bo_count; i++) {
/* XXX: Use shared fences for read-only objects. */
- reservation_object_add_excl_fence(job->bo[i]->resv,
+ dma_resv_add_excl_fence(job->bo[i]->resv,
job->done_fence);
}
bo = to_vc4_bo(&exec->bo[i]->base);
bo->seqno = seqno;
- reservation_object_add_shared_fence(bo->base.base.resv, exec->fence);
+ dma_resv_add_shared_fence(bo->base.base.resv, exec->fence);
}
list_for_each_entry(bo, &exec->unref_list, unref_head) {
bo = to_vc4_bo(&exec->rcl_write_bo[i]->base);
bo->write_seqno = seqno;
- reservation_object_add_excl_fence(bo->base.base.resv, exec->fence);
+ dma_resv_add_excl_fence(bo->base.base.resv, exec->fence);
}
}
for (i = 0; i < exec->bo_count; i++) {
bo = &exec->bo[i]->base;
- ret = reservation_object_reserve_shared(bo->resv, 1);
+ ret = dma_resv_reserve_shared(bo->resv, 1);
if (ret) {
vc4_unlock_bo_reservations(dev, exec, acquire_ctx);
return ret;
*/
#include <linux/dma-buf.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <drm/drm_file.h>
{
struct drm_vgem_fence_attach *arg = data;
struct vgem_file *vfile = file->driver_priv;
- struct reservation_object *resv;
+ struct dma_resv *resv;
struct drm_gem_object *obj;
struct dma_fence *fence;
int ret;
/* Check for a conflicting fence */
resv = obj->resv;
- if (!reservation_object_test_signaled_rcu(resv,
+ if (!dma_resv_test_signaled_rcu(resv,
arg->flags & VGEM_FENCE_WRITE)) {
ret = -EBUSY;
goto err_fence;
/* Expose the fence via the dma-buf */
ret = 0;
- reservation_object_lock(resv, NULL);
+ dma_resv_lock(resv, NULL);
if (arg->flags & VGEM_FENCE_WRITE)
- reservation_object_add_excl_fence(resv, fence);
- else if ((ret = reservation_object_reserve_shared(resv, 1)) == 0)
- reservation_object_add_shared_fence(resv, fence);
- reservation_object_unlock(resv);
+ dma_resv_add_excl_fence(resv, fence);
+ else if ((ret = dma_resv_reserve_shared(resv, 1)) == 0)
+ dma_resv_add_shared_fence(resv, fence);
+ dma_resv_unlock(resv);
/* Record the fence in our idr for later signaling */
if (ret == 0) {
(vgdev, qobj->hw_res_handle,
vfpriv->ctx_id, offset, args->level,
&box, fence);
- reservation_object_add_excl_fence(qobj->tbo.base.resv,
+ dma_resv_add_excl_fence(qobj->tbo.base.resv,
&fence->f);
dma_fence_put(&fence->f);
(vgdev, qobj,
vfpriv ? vfpriv->ctx_id : 0, offset,
args->level, &box, fence);
- reservation_object_add_excl_fence(qobj->tbo.base.resv,
+ dma_resv_add_excl_fence(qobj->tbo.base.resv,
&fence->f);
dma_fence_put(&fence->f);
}
0, 0, vgfb->fence);
ret = virtio_gpu_object_reserve(bo, false);
if (!ret) {
- reservation_object_add_excl_fence(bo->tbo.base.resv,
+ dma_resv_add_excl_fence(bo->tbo.base.resv,
&vgfb->fence->f);
dma_fence_put(&vgfb->fence->f);
vgfb->fence = NULL;
/* Buffer objects need to be either pinned or reserved: */
if (!(dst->mem.placement & TTM_PL_FLAG_NO_EVICT))
- reservation_object_assert_held(dst->base.resv);
+ dma_resv_assert_held(dst->base.resv);
if (!(src->mem.placement & TTM_PL_FLAG_NO_EVICT))
- reservation_object_assert_held(src->base.resv);
+ dma_resv_assert_held(src->base.resv);
if (dst->ttm->state == tt_unpopulated) {
ret = dst->ttm->bdev->driver->ttm_tt_populate(dst->ttm, &ctx);
uint32_t old_mem_type = bo->mem.mem_type;
int ret;
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
if (pin) {
if (vbo->pin_count++ > 0)
bool nonblock = !!(flags & drm_vmw_synccpu_dontblock);
long lret;
- lret = reservation_object_wait_timeout_rcu
+ lret = dma_resv_wait_timeout_rcu
(bo->base.resv, true, true,
nonblock ? 0 : MAX_SCHEDULE_TIMEOUT);
if (!lret)
if (fence == NULL) {
vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
- reservation_object_add_excl_fence(bo->base.resv, &fence->base);
+ dma_resv_add_excl_fence(bo->base.resv, &fence->base);
dma_fence_put(&fence->base);
} else
- reservation_object_add_excl_fence(bo->base.resv, &fence->base);
+ dma_resv_add_excl_fence(bo->base.resv, &fence->base);
}
} *cmd;
WARN_ON_ONCE(bo->mem.mem_type != VMW_PL_MOB);
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
if (!cmd)
return 0;
WARN_ON_ONCE(bo->mem.mem_type != VMW_PL_MOB);
- reservation_object_assert_held(bo->base.resv);
+ dma_resv_assert_held(bo->base.resv);
mutex_lock(&dev_priv->binding_mutex);
if (!vcotbl->scrubbed)
if (switch_backup && new_backup != res->backup) {
if (res->backup) {
- reservation_object_assert_held(res->backup->base.base.resv);
+ dma_resv_assert_held(res->backup->base.base.resv);
list_del_init(&res->mob_head);
vmw_bo_unreference(&res->backup);
}
if (new_backup) {
res->backup = vmw_bo_reference(new_backup);
- reservation_object_assert_held(new_backup->base.base.resv);
+ dma_resv_assert_held(new_backup->base.base.resv);
list_add_tail(&res->mob_head, &new_backup->res_list);
} else {
res->backup = NULL;
.num_shared = 0
};
- reservation_object_assert_held(vbo->base.base.resv);
+ dma_resv_assert_held(vbo->base.base.resv);
list_for_each_entry_safe(res, next, &vbo->res_list, mob_head) {
if (!res->func->unbind)
continue;
struct device_node;
struct videomode;
-struct reservation_object;
+struct dma_resv;
struct dma_buf_attachment;
struct pci_dev;
*/
#include <linux/kref.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
#include <drm/drm_vma_manager.h>
*
* Normally (@resv == &@_resv) except for imported GEM objects.
*/
- struct reservation_object *resv;
+ struct dma_resv *resv;
/**
* @_resv:
*
* This is unused for imported GEM objects.
*/
- struct reservation_object _resv;
+ struct dma_resv _resv;
/**
* @funcs:
int drm_gem_objects_lookup(struct drm_file *filp, void __user *bo_handles,
int count, struct drm_gem_object ***objs_out);
struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
-long drm_gem_reservation_object_wait(struct drm_file *filep, u32 handle,
+long drm_gem_dma_resv_wait(struct drm_file *filep, u32 handle,
bool wait_all, unsigned long timeout);
int drm_gem_lock_reservations(struct drm_gem_object **objs, int count,
struct ww_acquire_ctx *acquire_ctx);
#include <linux/mutex.h>
#include <linux/mm.h>
#include <linux/bitmap.h>
-#include <linux/reservation.h>
+#include <linux/dma-resv.h>
struct ttm_bo_global;
struct ttm_operation_ctx {
bool interruptible;
bool no_wait_gpu;
- struct reservation_object *resv;
+ struct dma_resv *resv;
uint64_t bytes_moved;
uint32_t flags;
};
* @page_alignment: Data alignment in pages.
* @ctx: TTM operation context for memory allocation.
* @acc_size: Accounted size for this object.
- * @resv: Pointer to a reservation_object, or NULL to let ttm allocate one.
+ * @resv: Pointer to a dma_resv, or NULL to let ttm allocate one.
* @destroy: Destroy function. Use NULL for kfree().
*
* This function initializes a pre-allocated struct ttm_buffer_object.
struct ttm_operation_ctx *ctx,
size_t acc_size,
struct sg_table *sg,
- struct reservation_object *resv,
+ struct dma_resv *resv,
void (*destroy) (struct ttm_buffer_object *));
/**
* point to the shmem object backing a GEM object if TTM is used to back a
* GEM user interface.
* @acc_size: Accounted size for this object.
- * @resv: Pointer to a reservation_object, or NULL to let ttm allocate one.
+ * @resv: Pointer to a dma_resv, or NULL to let ttm allocate one.
* @destroy: Destroy function. Use NULL for kfree().
*
* This function initializes a pre-allocated struct ttm_buffer_object.
unsigned long size, enum ttm_bo_type type,
struct ttm_placement *placement,
uint32_t page_alignment, bool interrubtible, size_t acc_size,
- struct sg_table *sg, struct reservation_object *resv,
+ struct sg_table *sg, struct dma_resv *resv,
void (*destroy) (struct ttm_buffer_object *));
/**
#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"
if (WARN_ON(ticket))
return -EBUSY;
- success = reservation_object_trylock(bo->base.resv);
+ success = dma_resv_trylock(bo->base.resv);
return success ? 0 : -EBUSY;
}
if (interruptible)
- ret = reservation_object_lock_interruptible(bo->base.resv, ticket);
+ ret = dma_resv_lock_interruptible(bo->base.resv, ticket);
else
- ret = reservation_object_lock(bo->base.resv, ticket);
+ ret = dma_resv_lock(bo->base.resv, ticket);
if (ret == -EINTR)
return -ERESTARTSYS;
return ret;
WARN_ON(!kref_read(&bo->kref));
if (interruptible)
- ret = reservation_object_lock_slow_interruptible(bo->base.resv,
+ ret = dma_resv_lock_slow_interruptible(bo->base.resv,
ticket);
else
- reservation_object_lock_slow(bo->base.resv, ticket);
+ dma_resv_lock_slow(bo->base.resv, ticket);
if (likely(ret == 0))
ttm_bo_del_sub_from_lru(bo);
else
ttm_bo_move_to_lru_tail(bo, NULL);
spin_unlock(&bo->bdev->glob->lru_lock);
- reservation_object_unlock(bo->base.resv);
+ dma_resv_unlock(bo->base.resv);
}
/*
struct module *owner;
struct list_head list_node;
void *priv;
- struct reservation_object *resv;
+ struct dma_resv *resv;
/* poll support */
wait_queue_head_t poll;
const struct dma_buf_ops *ops;
size_t size;
int flags;
- struct reservation_object *resv;
+ struct dma_resv *resv;
void *priv;
};
}
/**
- * dma_fence_get_rcu - get a fence from a reservation_object_list with
+ * dma_fence_get_rcu - get a fence from a dma_resv_list with
* rcu read lock
* @fence: fence to increase refcount of
*
* so long as the caller is using RCU on the pointer to the fence.
*
* An alternative mechanism is to employ a seqlock to protect a bunch of
- * fences, such as used by struct reservation_object. When using a seqlock,
+ * fences, such as used by struct dma_resv. When using a seqlock,
* the seqlock must be taken before and checked after a reference to the
* fence is acquired (as shown here).
*
--- /dev/null
+/*
+ * Header file for reservations for dma-buf and ttm
+ *
+ * Copyright(C) 2011 Linaro Limited. All rights reserved.
+ * Copyright (C) 2012-2013 Canonical Ltd
+ * Copyright (C) 2012 Texas Instruments
+ *
+ * Authors:
+ * Rob Clark <robdclark@gmail.com>
+ * Maarten Lankhorst <maarten.lankhorst@canonical.com>
+ * Thomas Hellstrom <thellstrom-at-vmware-dot-com>
+ *
+ * Based on bo.c which bears the following copyright notice,
+ * but is dual licensed:
+ *
+ * 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.
+ */
+#ifndef _LINUX_RESERVATION_H
+#define _LINUX_RESERVATION_H
+
+#include <linux/ww_mutex.h>
+#include <linux/dma-fence.h>
+#include <linux/slab.h>
+#include <linux/seqlock.h>
+#include <linux/rcupdate.h>
+
+extern struct ww_class reservation_ww_class;
+
+/**
+ * struct dma_resv_list - a list of shared fences
+ * @rcu: for internal use
+ * @shared_count: table of shared fences
+ * @shared_max: for growing shared fence table
+ * @shared: shared fence table
+ */
+struct dma_resv_list {
+ struct rcu_head rcu;
+ u32 shared_count, shared_max;
+ struct dma_fence __rcu *shared[];
+};
+
+/**
+ * struct dma_resv - a reservation object manages fences for a buffer
+ * @lock: update side lock
+ * @seq: sequence count for managing RCU read-side synchronization
+ * @fence_excl: the exclusive fence, if there is one currently
+ * @fence: list of current shared fences
+ */
+struct dma_resv {
+ struct ww_mutex lock;
+
+ struct dma_fence __rcu *fence_excl;
+ struct dma_resv_list __rcu *fence;
+};
+
+#define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base)
+#define dma_resv_assert_held(obj) lockdep_assert_held(&(obj)->lock.base)
+
+/**
+ * dma_resv_get_excl - get the reservation object's
+ * exclusive fence, with update-side lock held
+ * @obj: the reservation object
+ *
+ * Returns the exclusive fence (if any). Does NOT take a
+ * reference. Writers must hold obj->lock, readers may only
+ * hold a RCU read side lock.
+ *
+ * RETURNS
+ * The exclusive fence or NULL
+ */
+static inline struct dma_fence *dma_resv_get_excl(struct dma_resv *obj)
+{
+ return rcu_dereference_protected(obj->fence_excl,
+ dma_resv_held(obj));
+}
+
+/**
+ * dma_resv_get_list - get the reservation object's
+ * shared fence list, with update-side lock held
+ * @obj: the reservation object
+ *
+ * Returns the shared fence list. Does NOT take references to
+ * the fence. The obj->lock must be held.
+ */
+static inline struct dma_resv_list *dma_resv_get_list(struct dma_resv *obj)
+{
+ return rcu_dereference_protected(obj->fence,
+ dma_resv_held(obj));
+}
+
+/**
+ * dma_resv_fences - read consistent fence pointers
+ * @obj: reservation object where we get the fences from
+ * @excl: pointer for the exclusive fence
+ * @list: pointer for the shared fence list
+ *
+ * Make sure we have a consisten exclusive fence and shared fence list.
+ * Must be called with rcu read side lock held.
+ */
+static inline void dma_resv_fences(struct dma_resv *obj,
+ struct dma_fence **excl,
+ struct dma_resv_list **list,
+ u32 *shared_count)
+{
+ do {
+ *excl = rcu_dereference(obj->fence_excl);
+ *list = rcu_dereference(obj->fence);
+ *shared_count = *list ? (*list)->shared_count : 0;
+ smp_rmb(); /* See dma_resv_add_excl_fence */
+ } while (rcu_access_pointer(obj->fence_excl) != *excl);
+}
+
+/**
+ * dma_resv_get_excl_rcu - get the reservation object's
+ * exclusive fence, without lock held.
+ * @obj: the reservation object
+ *
+ * If there is an exclusive fence, this atomically increments it's
+ * reference count and returns it.
+ *
+ * RETURNS
+ * The exclusive fence or NULL if none
+ */
+static inline struct dma_fence *dma_resv_get_excl_rcu(struct dma_resv *obj)
+{
+ struct dma_fence *fence;
+
+ if (!rcu_access_pointer(obj->fence_excl))
+ return NULL;
+
+ rcu_read_lock();
+ fence = dma_fence_get_rcu_safe(&obj->fence_excl);
+ rcu_read_unlock();
+
+ return fence;
+}
+
+/**
+ * dma_resv_lock - lock the reservation object
+ * @obj: the reservation object
+ * @ctx: the locking context
+ *
+ * Locks the reservation object for exclusive access and modification. Note,
+ * that the lock is only against other writers, readers will run concurrently
+ * with a writer under RCU. The seqlock is used to notify readers if they
+ * overlap with a writer.
+ *
+ * As the reservation object may be locked by multiple parties in an
+ * undefined order, a #ww_acquire_ctx is passed to unwind if a cycle
+ * is detected. See ww_mutex_lock() and ww_acquire_init(). A reservation
+ * object may be locked by itself by passing NULL as @ctx.
+ */
+static inline int dma_resv_lock(struct dma_resv *obj,
+ struct ww_acquire_ctx *ctx)
+{
+ return ww_mutex_lock(&obj->lock, ctx);
+}
+
+/**
+ * dma_resv_lock_interruptible - lock the reservation object
+ * @obj: the reservation object
+ * @ctx: the locking context
+ *
+ * Locks the reservation object interruptible for exclusive access and
+ * modification. Note, that the lock is only against other writers, readers
+ * will run concurrently with a writer under RCU. The seqlock is used to
+ * notify readers if they overlap with a writer.
+ *
+ * As the reservation object may be locked by multiple parties in an
+ * undefined order, a #ww_acquire_ctx is passed to unwind if a cycle
+ * is detected. See ww_mutex_lock() and ww_acquire_init(). A reservation
+ * object may be locked by itself by passing NULL as @ctx.
+ */
+static inline int dma_resv_lock_interruptible(struct dma_resv *obj,
+ struct ww_acquire_ctx *ctx)
+{
+ return ww_mutex_lock_interruptible(&obj->lock, ctx);
+}
+
+/**
+ * dma_resv_lock_slow - slowpath lock the reservation object
+ * @obj: the reservation object
+ * @ctx: the locking context
+ *
+ * Acquires the reservation object after a die case. This function
+ * will sleep until the lock becomes available. See dma_resv_lock() as
+ * well.
+ */
+static inline void dma_resv_lock_slow(struct dma_resv *obj,
+ struct ww_acquire_ctx *ctx)
+{
+ ww_mutex_lock_slow(&obj->lock, ctx);
+}
+
+/**
+ * dma_resv_lock_slow_interruptible - slowpath lock the reservation
+ * object, interruptible
+ * @obj: the reservation object
+ * @ctx: the locking context
+ *
+ * Acquires the reservation object interruptible after a die case. This function
+ * will sleep until the lock becomes available. See
+ * dma_resv_lock_interruptible() as well.
+ */
+static inline int dma_resv_lock_slow_interruptible(struct dma_resv *obj,
+ struct ww_acquire_ctx *ctx)
+{
+ return ww_mutex_lock_slow_interruptible(&obj->lock, ctx);
+}
+
+/**
+ * dma_resv_trylock - trylock the reservation object
+ * @obj: the reservation object
+ *
+ * Tries to lock the reservation object for exclusive access and modification.
+ * Note, that the lock is only against other writers, readers will run
+ * concurrently with a writer under RCU. The seqlock is used to notify readers
+ * if they overlap with a writer.
+ *
+ * Also note that since no context is provided, no deadlock protection is
+ * possible.
+ *
+ * Returns true if the lock was acquired, false otherwise.
+ */
+static inline bool __must_check dma_resv_trylock(struct dma_resv *obj)
+{
+ return ww_mutex_trylock(&obj->lock);
+}
+
+/**
+ * dma_resv_is_locked - is the reservation object locked
+ * @obj: the reservation object
+ *
+ * Returns true if the mutex is locked, false if unlocked.
+ */
+static inline bool dma_resv_is_locked(struct dma_resv *obj)
+{
+ return ww_mutex_is_locked(&obj->lock);
+}
+
+/**
+ * dma_resv_locking_ctx - returns the context used to lock the object
+ * @obj: the reservation object
+ *
+ * Returns the context used to lock a reservation object or NULL if no context
+ * was used or the object is not locked at all.
+ */
+static inline struct ww_acquire_ctx *dma_resv_locking_ctx(struct dma_resv *obj)
+{
+ return READ_ONCE(obj->lock.ctx);
+}
+
+/**
+ * dma_resv_unlock - unlock the reservation object
+ * @obj: the reservation object
+ *
+ * Unlocks the reservation object following exclusive access.
+ */
+static inline void dma_resv_unlock(struct dma_resv *obj)
+{
+#ifdef CONFIG_DEBUG_MUTEXES
+ /* Test shared fence slot reservation */
+ if (rcu_access_pointer(obj->fence)) {
+ struct dma_resv_list *fence = dma_resv_get_list(obj);
+
+ fence->shared_max = fence->shared_count;
+ }
+#endif
+ ww_mutex_unlock(&obj->lock);
+}
+
+void dma_resv_init(struct dma_resv *obj);
+void dma_resv_fini(struct dma_resv *obj);
+int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences);
+void dma_resv_add_shared_fence(struct dma_resv *obj, struct dma_fence *fence);
+
+void dma_resv_add_excl_fence(struct dma_resv *obj, struct dma_fence *fence);
+
+int dma_resv_get_fences_rcu(struct dma_resv *obj,
+ struct dma_fence **pfence_excl,
+ unsigned *pshared_count,
+ struct dma_fence ***pshared);
+
+int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src);
+
+long dma_resv_wait_timeout_rcu(struct dma_resv *obj, bool wait_all, bool intr,
+ unsigned long timeout);
+
+bool dma_resv_test_signaled_rcu(struct dma_resv *obj, bool test_all);
+
+#endif /* _LINUX_RESERVATION_H */
+++ /dev/null
-/*
- * Header file for reservations for dma-buf and ttm
- *
- * Copyright(C) 2011 Linaro Limited. All rights reserved.
- * Copyright (C) 2012-2013 Canonical Ltd
- * Copyright (C) 2012 Texas Instruments
- *
- * Authors:
- * Rob Clark <robdclark@gmail.com>
- * Maarten Lankhorst <maarten.lankhorst@canonical.com>
- * Thomas Hellstrom <thellstrom-at-vmware-dot-com>
- *
- * Based on bo.c which bears the following copyright notice,
- * but is dual licensed:
- *
- * 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.
- */
-#ifndef _LINUX_RESERVATION_H
-#define _LINUX_RESERVATION_H
-
-#include <linux/ww_mutex.h>
-#include <linux/dma-fence.h>
-#include <linux/slab.h>
-#include <linux/seqlock.h>
-#include <linux/rcupdate.h>
-
-extern struct ww_class reservation_ww_class;
-
-/**
- * struct reservation_object_list - a list of shared fences
- * @rcu: for internal use
- * @shared_count: table of shared fences
- * @shared_max: for growing shared fence table
- * @shared: shared fence table
- */
-struct reservation_object_list {
- struct rcu_head rcu;
- u32 shared_count, shared_max;
- struct dma_fence __rcu *shared[];
-};
-
-/**
- * struct reservation_object - a reservation object manages fences for a buffer
- * @lock: update side lock
- * @seq: sequence count for managing RCU read-side synchronization
- * @fence_excl: the exclusive fence, if there is one currently
- * @fence: list of current shared fences
- */
-struct reservation_object {
- struct ww_mutex lock;
-
- struct dma_fence __rcu *fence_excl;
- struct reservation_object_list __rcu *fence;
-};
-
-#define reservation_object_held(obj) lockdep_is_held(&(obj)->lock.base)
-#define reservation_object_assert_held(obj) \
- lockdep_assert_held(&(obj)->lock.base)
-
-/**
- * reservation_object_get_excl - get the reservation object's
- * exclusive fence, with update-side lock held
- * @obj: the reservation object
- *
- * Returns the exclusive fence (if any). Does NOT take a
- * reference. Writers must hold obj->lock, readers may only
- * hold a RCU read side lock.
- *
- * RETURNS
- * The exclusive fence or NULL
- */
-static inline struct dma_fence *
-reservation_object_get_excl(struct reservation_object *obj)
-{
- return rcu_dereference_protected(obj->fence_excl,
- reservation_object_held(obj));
-}
-
-/**
- * reservation_object_get_list - get the reservation object's
- * shared fence list, with update-side lock held
- * @obj: the reservation object
- *
- * Returns the shared fence list. Does NOT take references to
- * the fence. The obj->lock must be held.
- */
-static inline struct reservation_object_list *
-reservation_object_get_list(struct reservation_object *obj)
-{
- return rcu_dereference_protected(obj->fence,
- reservation_object_held(obj));
-}
-
-/**
- * reservation_object_fences - read consistent fence pointers
- * @obj: reservation object where we get the fences from
- * @excl: pointer for the exclusive fence
- * @list: pointer for the shared fence list
- *
- * Make sure we have a consisten exclusive fence and shared fence list.
- * Must be called with rcu read side lock held.
- */
-static inline void
-reservation_object_fences(struct reservation_object *obj,
- struct dma_fence **excl,
- struct reservation_object_list **list,
- u32 *shared_count)
-{
- do {
- *excl = rcu_dereference(obj->fence_excl);
- *list = rcu_dereference(obj->fence);
- *shared_count = *list ? (*list)->shared_count : 0;
- smp_rmb(); /* See reservation_object_add_excl_fence */
- } while (rcu_access_pointer(obj->fence_excl) != *excl);
-}
-
-/**
- * reservation_object_get_excl_rcu - get the reservation object's
- * exclusive fence, without lock held.
- * @obj: the reservation object
- *
- * If there is an exclusive fence, this atomically increments it's
- * reference count and returns it.
- *
- * RETURNS
- * The exclusive fence or NULL if none
- */
-static inline struct dma_fence *
-reservation_object_get_excl_rcu(struct reservation_object *obj)
-{
- struct dma_fence *fence;
-
- if (!rcu_access_pointer(obj->fence_excl))
- return NULL;
-
- rcu_read_lock();
- fence = dma_fence_get_rcu_safe(&obj->fence_excl);
- rcu_read_unlock();
-
- return fence;
-}
-
-/**
- * reservation_object_lock - lock the reservation object
- * @obj: the reservation object
- * @ctx: the locking context
- *
- * Locks the reservation object for exclusive access and modification. Note,
- * that the lock is only against other writers, readers will run concurrently
- * with a writer under RCU. The seqlock is used to notify readers if they
- * overlap with a writer.
- *
- * As the reservation object may be locked by multiple parties in an
- * undefined order, a #ww_acquire_ctx is passed to unwind if a cycle
- * is detected. See ww_mutex_lock() and ww_acquire_init(). A reservation
- * object may be locked by itself by passing NULL as @ctx.
- */
-static inline int
-reservation_object_lock(struct reservation_object *obj,
- struct ww_acquire_ctx *ctx)
-{
- return ww_mutex_lock(&obj->lock, ctx);
-}
-
-/**
- * reservation_object_lock_interruptible - lock the reservation object
- * @obj: the reservation object
- * @ctx: the locking context
- *
- * Locks the reservation object interruptible for exclusive access and
- * modification. Note, that the lock is only against other writers, readers
- * will run concurrently with a writer under RCU. The seqlock is used to
- * notify readers if they overlap with a writer.
- *
- * As the reservation object may be locked by multiple parties in an
- * undefined order, a #ww_acquire_ctx is passed to unwind if a cycle
- * is detected. See ww_mutex_lock() and ww_acquire_init(). A reservation
- * object may be locked by itself by passing NULL as @ctx.
- */
-static inline int
-reservation_object_lock_interruptible(struct reservation_object *obj,
- struct ww_acquire_ctx *ctx)
-{
- return ww_mutex_lock_interruptible(&obj->lock, ctx);
-}
-
-/**
- * reservation_object_lock_slow - slowpath lock the reservation object
- * @obj: the reservation object
- * @ctx: the locking context
- *
- * Acquires the reservation object after a die case. This function
- * will sleep until the lock becomes available. See reservation_object_lock() as
- * well.
- */
-static inline void
-reservation_object_lock_slow(struct reservation_object *obj,
- struct ww_acquire_ctx *ctx)
-{
- ww_mutex_lock_slow(&obj->lock, ctx);
-}
-
-/**
- * reservation_object_lock_slow_interruptible - slowpath lock the reservation
- * object, interruptible
- * @obj: the reservation object
- * @ctx: the locking context
- *
- * Acquires the reservation object interruptible after a die case. This function
- * will sleep until the lock becomes available. See
- * reservation_object_lock_interruptible() as well.
- */
-static inline int
-reservation_object_lock_slow_interruptible(struct reservation_object *obj,
- struct ww_acquire_ctx *ctx)
-{
- return ww_mutex_lock_slow_interruptible(&obj->lock, ctx);
-}
-
-/**
- * reservation_object_trylock - trylock the reservation object
- * @obj: the reservation object
- *
- * Tries to lock the reservation object for exclusive access and modification.
- * Note, that the lock is only against other writers, readers will run
- * concurrently with a writer under RCU. The seqlock is used to notify readers
- * if they overlap with a writer.
- *
- * Also note that since no context is provided, no deadlock protection is
- * possible.
- *
- * Returns true if the lock was acquired, false otherwise.
- */
-static inline bool __must_check
-reservation_object_trylock(struct reservation_object *obj)
-{
- return ww_mutex_trylock(&obj->lock);
-}
-
-/**
- * reservation_object_is_locked - is the reservation object locked
- * @obj: the reservation object
- *
- * Returns true if the mutex is locked, false if unlocked.
- */
-static inline bool
-reservation_object_is_locked(struct reservation_object *obj)
-{
- return ww_mutex_is_locked(&obj->lock);
-}
-
-/**
- * reservation_object_locking_ctx - returns the context used to lock the object
- * @obj: the reservation object
- *
- * Returns the context used to lock a reservation object or NULL if no context
- * was used or the object is not locked at all.
- */
-static inline struct ww_acquire_ctx *
-reservation_object_locking_ctx(struct reservation_object *obj)
-{
- return READ_ONCE(obj->lock.ctx);
-}
-
-/**
- * reservation_object_unlock - unlock the reservation object
- * @obj: the reservation object
- *
- * Unlocks the reservation object following exclusive access.
- */
-static inline void
-reservation_object_unlock(struct reservation_object *obj)
-{
-#ifdef CONFIG_DEBUG_MUTEXES
- /* Test shared fence slot reservation */
- if (rcu_access_pointer(obj->fence)) {
- struct reservation_object_list *fence =
- reservation_object_get_list(obj);
-
- fence->shared_max = fence->shared_count;
- }
-#endif
- ww_mutex_unlock(&obj->lock);
-}
-
-void reservation_object_init(struct reservation_object *obj);
-void reservation_object_fini(struct reservation_object *obj);
-int reservation_object_reserve_shared(struct reservation_object *obj,
- unsigned int num_fences);
-void reservation_object_add_shared_fence(struct reservation_object *obj,
- struct dma_fence *fence);
-
-void reservation_object_add_excl_fence(struct reservation_object *obj,
- struct dma_fence *fence);
-
-int reservation_object_get_fences_rcu(struct reservation_object *obj,
- struct dma_fence **pfence_excl,
- unsigned *pshared_count,
- struct dma_fence ***pshared);
-
-int reservation_object_copy_fences(struct reservation_object *dst,
- struct reservation_object *src);
-
-long reservation_object_wait_timeout_rcu(struct reservation_object *obj,
- bool wait_all, bool intr,
- unsigned long timeout);
-
-bool reservation_object_test_signaled_rcu(struct reservation_object *obj,
- bool test_all);
-
-#endif /* _LINUX_RESERVATION_H */
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