i915-y += i915_cmd_parser.o \
i915_gem_batch_pool.o \
i915_gem_context.o \
- i915_gem_debug.o \
i915_gem_dmabuf.o \
i915_gem_evict.o \
i915_gem_execbuffer.o \
#define DRIVER_MINOR 6
#define DRIVER_PATCHLEVEL 0
-#define WATCH_LISTS 0
-
struct opregion_header;
struct opregion_acpi;
struct opregion_swsci;
struct drm_mm_node *stolen;
struct list_head global_list;
- struct list_head engine_list[I915_NUM_ENGINES];
/** Used in execbuf to temporarily hold a ref */
struct list_head obj_exec_link;
obj->tiling_mode != I915_TILING_NONE;
}
-/* i915_gem_debug.c */
-#if WATCH_LISTS
-int i915_verify_lists(struct drm_device *dev);
-#else
-#define i915_verify_lists(dev) 0
-#endif
-
/* i915_debugfs.c */
#ifdef CONFIG_DEBUG_FS
int i915_debugfs_register(struct drm_i915_private *dev_priv);
static void i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj);
static void i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj);
-static void
-i915_gem_object_retire__write(struct drm_i915_gem_object *obj);
-static void
-i915_gem_object_retire__read(struct drm_i915_gem_object *obj, int engine);
static bool cpu_cache_is_coherent(struct drm_device *dev,
enum i915_cache_level level)
if (ret)
return ret;
- WARN_ON(i915_verify_lists(dev));
return 0;
}
return ret;
}
-static void
-i915_gem_object_retire_request(struct drm_i915_gem_object *obj,
- struct drm_i915_gem_request *req)
-{
- int idx = req->engine->id;
-
- if (i915_gem_active_peek(&obj->last_read[idx],
- &obj->base.dev->struct_mutex) == req)
- i915_gem_object_retire__read(obj, idx);
- else if (i915_gem_active_peek(&obj->last_write,
- &obj->base.dev->struct_mutex) == req)
- i915_gem_object_retire__write(obj);
-
- if (!i915_reset_in_progress(&req->i915->gpu_error))
- i915_gem_request_retire_upto(req);
-}
-
/**
* Ensures that all rendering to the object has completed and the object is
* safe to unbind from the GTT or access from the CPU.
}
for_each_active(active_mask, idx) {
- struct drm_i915_gem_request *request;
-
- request = i915_gem_active_peek(&active[idx],
- &obj->base.dev->struct_mutex);
- if (!request)
- continue;
-
- ret = i915_wait_request(request);
+ ret = i915_gem_active_wait(&active[idx],
+ &obj->base.dev->struct_mutex);
if (ret)
return ret;
-
- i915_gem_object_retire_request(obj, request);
}
resv = i915_gem_object_get_dmabuf_resv(obj);
ret = __i915_wait_request(requests[i], true, NULL, rps);
mutex_lock(&dev->struct_mutex);
- for (i = 0; i < n; i++) {
- if (ret == 0)
- i915_gem_object_retire_request(obj, requests[i]);
+ for (i = 0; i < n; i++)
i915_gem_request_put(requests[i]);
- }
return ret;
}
i915_gem_object_get(obj);
obj->active |= intel_engine_flag(engine);
- list_move_tail(&obj->engine_list[engine->id], &engine->active_list);
i915_gem_active_set(&obj->last_read[engine->id], req);
list_move_tail(&vma->vm_link, &vma->vm->active_list);
}
static void
-i915_gem_object_retire__write(struct drm_i915_gem_object *obj)
+i915_gem_object_retire__write(struct i915_gem_active *active,
+ struct drm_i915_gem_request *request)
{
- GEM_BUG_ON(!i915_gem_active_isset(&obj->last_write));
- GEM_BUG_ON(!(obj->active &
- intel_engine_flag(i915_gem_active_get_engine(&obj->last_write,
- &obj->base.dev->struct_mutex))));
+ struct drm_i915_gem_object *obj =
+ container_of(active, struct drm_i915_gem_object, last_write);
- i915_gem_active_set(&obj->last_write, NULL);
intel_fb_obj_flush(obj, true, ORIGIN_CS);
}
static void
-i915_gem_object_retire__read(struct drm_i915_gem_object *obj, int idx)
+i915_gem_object_retire__read(struct i915_gem_active *active,
+ struct drm_i915_gem_request *request)
{
- struct intel_engine_cs *engine;
+ int idx = request->engine->id;
+ struct drm_i915_gem_object *obj =
+ container_of(active, struct drm_i915_gem_object, last_read[idx]);
struct i915_vma *vma;
- GEM_BUG_ON(!i915_gem_active_isset(&obj->last_read[idx]));
- GEM_BUG_ON(!(obj->active & (1 << idx)));
-
- list_del_init(&obj->engine_list[idx]);
- i915_gem_active_set(&obj->last_read[idx], NULL);
-
- engine = i915_gem_active_get_engine(&obj->last_write,
- &obj->base.dev->struct_mutex);
- if (engine && engine->id == idx)
- i915_gem_object_retire__write(obj);
+ GEM_BUG_ON((obj->active & (1 << idx)) == 0);
obj->active &= ~(1 << idx);
if (obj->active)
* so that we don't steal from recently used but inactive objects
* (unless we are forced to ofc!)
*/
- list_move_tail(&obj->global_list,
- &to_i915(obj->base.dev)->mm.bound_list);
+ list_move_tail(&obj->global_list, &request->i915->mm.bound_list);
list_for_each_entry(vma, &obj->vma_list, obj_link) {
if (!list_empty(&vma->vm_link))
list_move_tail(&vma->vm_link, &vma->vm->inactive_list);
}
- i915_gem_active_set(&obj->last_fence, NULL);
i915_gem_object_put(obj);
}
{
struct intel_ring *ring;
- while (!list_empty(&engine->active_list)) {
- struct drm_i915_gem_object *obj;
-
- obj = list_first_entry(&engine->active_list,
- struct drm_i915_gem_object,
- engine_list[engine->id]);
-
- i915_gem_object_retire__read(obj, engine->id);
- }
-
/* Mark all pending requests as complete so that any concurrent
* (lockless) lookup doesn't try and wait upon the request as we
* reset it.
i915_gem_context_reset(dev);
i915_gem_restore_fences(dev);
-
- WARN_ON(i915_verify_lists(dev));
}
/**
void
i915_gem_retire_requests_ring(struct intel_engine_cs *engine)
{
- WARN_ON(i915_verify_lists(engine->dev));
-
- /* Retire requests first as we use it above for the early return.
- * If we retire requests last, we may use a later seqno and so clear
- * the requests lists without clearing the active list, leading to
- * confusion.
- */
while (!list_empty(&engine->request_list)) {
struct drm_i915_gem_request *request;
i915_gem_request_retire_upto(request);
}
-
- /* Move any buffers on the active list that are no longer referenced
- * by the ringbuffer to the flushing/inactive lists as appropriate,
- * before we free the context associated with the requests.
- */
- while (!list_empty(&engine->active_list)) {
- struct drm_i915_gem_object *obj;
-
- obj = list_first_entry(&engine->active_list,
- struct drm_i915_gem_object,
- engine_list[engine->id]);
-
- if (!list_empty(&i915_gem_active_peek(&obj->last_read[engine->id],
- &obj->base.dev->struct_mutex)->link))
- break;
-
- i915_gem_object_retire__read(obj, engine->id);
- }
-
- WARN_ON(i915_verify_lists(engine->dev));
}
void i915_gem_retire_requests(struct drm_i915_private *dev_priv)
}
static int
-__i915_gem_object_sync(struct drm_i915_gem_object *obj,
- struct drm_i915_gem_request *to,
+__i915_gem_object_sync(struct drm_i915_gem_request *to,
struct drm_i915_gem_request *from)
{
int ret;
if (to->engine == from->engine)
return 0;
- if (i915_gem_request_completed(from))
- return 0;
-
if (!i915.semaphores) {
ret = __i915_wait_request(from,
from->i915->mm.interruptible,
NO_WAITBOOST);
if (ret)
return ret;
-
- i915_gem_object_retire_request(obj, from);
} else {
int idx = intel_engine_sync_index(from->engine, to->engine);
if (from->fence.seqno <= from->engine->semaphore.sync_seqno[idx])
if (!request)
continue;
- ret = __i915_gem_object_sync(obj, to, request);
+ ret = __i915_gem_object_sync(to, request);
if (ret)
return ret;
}
return ret;
}
- WARN_ON(i915_verify_lists(dev));
return 0;
}
INIT_LIST_HEAD(&obj->global_list);
for (i = 0; i < I915_NUM_ENGINES; i++)
- INIT_LIST_HEAD(&obj->engine_list[i]);
+ init_request_active(&obj->last_read[i],
+ i915_gem_object_retire__read);
+ init_request_active(&obj->last_write,
+ i915_gem_object_retire__write);
+ init_request_active(&obj->last_fence, NULL);
INIT_LIST_HEAD(&obj->obj_exec_link);
INIT_LIST_HEAD(&obj->vma_list);
INIT_LIST_HEAD(&obj->batch_pool_link);
static void
init_engine_lists(struct intel_engine_cs *engine)
{
- INIT_LIST_HEAD(&engine->active_list);
INIT_LIST_HEAD(&engine->request_list);
}
+++ /dev/null
-/*
- * Copyright © 2008 Intel Corporation
- *
- * 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, sublicense,
- * 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS 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:
- * Keith Packard <keithp@keithp.com>
- *
- */
-
-#include <drm/drmP.h>
-#include <drm/i915_drm.h>
-#include "i915_drv.h"
-
-#if WATCH_LISTS
-int
-i915_verify_lists(struct drm_device *dev)
-{
- static int warned;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct drm_i915_gem_object *obj;
- struct intel_engine_cs *engine;
- int err = 0;
-
- if (warned)
- return 0;
-
- for_each_engine(engine, dev_priv) {
- list_for_each_entry(obj, &engine->active_list,
- engine_list[engine->id]) {
- if (obj->base.dev != dev ||
- !atomic_read(&obj->base.refcount.refcount)) {
- DRM_ERROR("%s: freed active obj %p\n",
- engine->name, obj);
- err++;
- break;
- } else if (!obj->active ||
- obj->last_read_req[engine->id] == NULL) {
- DRM_ERROR("%s: invalid active obj %p\n",
- engine->name, obj);
- err++;
- } else if (obj->base.write_domain) {
- DRM_ERROR("%s: invalid write obj %p (w %x)\n",
- engine->name,
- obj, obj->base.write_domain);
- err++;
- }
- }
- }
-
- return warned = err;
-}
-#endif /* WATCH_LIST */
static int
i915_gem_object_wait_fence(struct drm_i915_gem_object *obj)
{
- int ret;
-
- ret = i915_gem_active_wait(&obj->last_fence,
- &obj->base.dev->struct_mutex);
- if (ret)
- return ret;
-
- i915_gem_active_set(&obj->last_fence, NULL);
- return 0;
+ return i915_gem_active_retire(&obj->last_fence,
+ &obj->base.dev->struct_mutex);
}
/**
*
*/
+#include <linux/prefetch.h>
+
#include "i915_drv.h"
static const char *i915_fence_get_driver_name(struct fence *fence)
request->pid = NULL;
}
+void i915_gem_retire_noop(struct i915_gem_active *active,
+ struct drm_i915_gem_request *request)
+{
+ /* Space left intentionally blank */
+}
+
static void i915_gem_request_retire(struct drm_i915_gem_request *request)
{
+ struct i915_gem_active *active, *next;
+
trace_i915_gem_request_retire(request);
list_del_init(&request->link);
*/
request->ring->last_retired_head = request->postfix;
+ /* Walk through the active list, calling retire on each. This allows
+ * objects to track their GPU activity and mark themselves as idle
+ * when their *last* active request is completed (updating state
+ * tracking lists for eviction, active references for GEM, etc).
+ *
+ * As the ->retire() may free the node, we decouple it first and
+ * pass along the auxiliary information (to avoid dereferencing
+ * the node after the callback).
+ */
+ list_for_each_entry_safe(active, next, &request->active_list, link) {
+ /* In microbenchmarks or focusing upon time inside the kernel,
+ * we may spend an inordinate amount of time simply handling
+ * the retirement of requests and processing their callbacks.
+ * Of which, this loop itself is particularly hot due to the
+ * cache misses when jumping around the list of i915_gem_active.
+ * So we try to keep this loop as streamlined as possible and
+ * also prefetch the next i915_gem_active to try and hide
+ * the likely cache miss.
+ */
+ prefetchw(next);
+
+ INIT_LIST_HEAD(&active->link);
+ active->request = NULL;
+
+ active->retire(active, request);
+ }
+
i915_gem_request_remove_from_client(request);
if (request->previous_context) {
i915_gem_request_retire(tmp);
} while (tmp != req);
-
- WARN_ON(i915_verify_lists(engine->dev));
}
static int i915_gem_check_wedge(unsigned int reset_counter, bool interruptible)
engine->fence_context,
seqno);
+ INIT_LIST_HEAD(&req->active_list);
req->i915 = dev_priv;
req->engine = engine;
req->ctx = i915_gem_context_get(ctx);
might_sleep();
- if (list_empty(&req->link))
- return 0;
-
if (i915_gem_request_completed(req))
return 0;
{
int ret;
- GEM_BUG_ON(!req);
lockdep_assert_held(&req->i915->drm.struct_mutex);
+ GEM_BUG_ON(list_empty(&req->link));
- ret = __i915_wait_request(req, req->i915->mm.interruptible, NULL, NULL);
+ ret = __i915_wait_request(req,
+ req->i915->mm.interruptible,
+ NULL,
+ NULL);
if (ret)
return ret;
* error state dump only).
*/
struct drm_i915_gem_object *batch_obj;
+ struct list_head active_list;
/** Time at which this request was emitted, in jiffies. */
unsigned long emitted_jiffies;
int __i915_wait_request(struct drm_i915_gem_request *req,
bool interruptible,
s64 *timeout,
- struct intel_rps_client *rps);
-int __must_check i915_wait_request(struct drm_i915_gem_request *req);
+ struct intel_rps_client *rps)
+ __attribute__((nonnull(1)));
+
+int __must_check
+i915_wait_request(struct drm_i915_gem_request *req)
+ __attribute__((nonnull));
static inline u32 intel_engine_get_seqno(struct intel_engine_cs *engine);
* can then perform any action, such as delayed freeing of an active
* resource including itself.
*/
+struct i915_gem_active;
+
+typedef void (*i915_gem_retire_fn)(struct i915_gem_active *,
+ struct drm_i915_gem_request *);
+
struct i915_gem_active {
struct drm_i915_gem_request *request;
+ struct list_head link;
+ i915_gem_retire_fn retire;
};
+void i915_gem_retire_noop(struct i915_gem_active *,
+ struct drm_i915_gem_request *request);
+
+/**
+ * init_request_active - prepares the activity tracker for use
+ * @active - the active tracker
+ * @func - a callback when then the tracker is retired (becomes idle),
+ * can be NULL
+ *
+ * init_request_active() prepares the embedded @active struct for use as
+ * an activity tracker, that is for tracking the last known active request
+ * associated with it. When the last request becomes idle, when it is retired
+ * after completion, the optional callback @func is invoked.
+ */
+static inline void
+init_request_active(struct i915_gem_active *active,
+ i915_gem_retire_fn retire)
+{
+ INIT_LIST_HEAD(&active->link);
+ active->retire = retire ?: i915_gem_retire_noop;
+}
+
/**
* i915_gem_active_set - updates the tracker to watch the current request
* @active - the active tracker
i915_gem_active_set(struct i915_gem_active *active,
struct drm_i915_gem_request *request)
{
- i915_gem_request_assign(&active->request, request);
+ list_move(&active->link, &request->active_list);
+ active->request = request;
}
static inline struct drm_i915_gem_request *
}
/**
- * i915_gem_active_peek - report the request being monitored
+ * i915_gem_active_peek - report the active request being monitored
* @active - the active tracker
*
- * i915_gem_active_peek() returns the current request being tracked, or NULL.
- * It does not obtain a reference on the request for the caller, so the
- * caller must hold struct_mutex.
+ * i915_gem_active_peek() returns the current request being tracked if
+ * still active, or NULL. It does not obtain a reference on the request
+ * for the caller, so the caller must hold struct_mutex.
*/
static inline struct drm_i915_gem_request *
i915_gem_active_peek(const struct i915_gem_active *active, struct mutex *mutex)
{
- return active->request;
+ struct drm_i915_gem_request *request;
+
+ request = active->request;
+ if (!request || i915_gem_request_completed(request))
+ return NULL;
+
+ return request;
}
/**
static inline struct drm_i915_gem_request *
i915_gem_active_get(const struct i915_gem_active *active, struct mutex *mutex)
{
- struct drm_i915_gem_request *request;
-
- request = i915_gem_active_peek(active, mutex);
- if (!request || i915_gem_request_completed(request))
- return NULL;
-
- return i915_gem_request_get(request);
+ return i915_gem_request_get(i915_gem_active_peek(active, mutex));
}
/**
i915_gem_active_is_idle(const struct i915_gem_active *active,
struct mutex *mutex)
{
- struct drm_i915_gem_request *request;
-
- request = i915_gem_active_peek(active, mutex);
- if (!request || i915_gem_request_completed(request))
- return true;
-
- return false;
+ return !i915_gem_active_peek(active, mutex);
}
/**
* i915_gem_active_wait() waits until the request is completed before
* returning. Note that it does not guarantee that the request is
* retired first, see i915_gem_active_retire().
+ *
+ * i915_gem_active_wait() returns immediately if the active
+ * request is already complete.
*/
static inline int __must_check
i915_gem_active_wait(const struct i915_gem_active *active, struct mutex *mutex)
if (!request)
return 0;
- return i915_wait_request(request);
+ return __i915_wait_request(request, true, NULL, NULL);
}
/**
* tracker is idle, the function returns immediately.
*/
static inline int __must_check
-i915_gem_active_retire(const struct i915_gem_active *active,
+i915_gem_active_retire(struct i915_gem_active *active,
struct mutex *mutex)
{
- return i915_gem_active_wait(active, mutex);
+ struct drm_i915_gem_request *request;
+ int ret;
+
+ request = active->request;
+ if (!request)
+ return 0;
+
+ ret = __i915_wait_request(request, true, NULL, NULL);
+ if (ret)
+ return ret;
+
+ list_del_init(&active->link);
+ active->request = NULL;
+ active->retire(active, request);
+
+ return 0;
}
/* Convenience functions for peeking at state inside active's request whilst
*/
void intel_engine_setup_common(struct intel_engine_cs *engine)
{
- INIT_LIST_HEAD(&engine->active_list);
INIT_LIST_HEAD(&engine->request_list);
INIT_LIST_HEAD(&engine->buffers);
INIT_LIST_HEAD(&engine->execlist_queue);
bool disable_lite_restore_wa;
u32 ctx_desc_template;
- /**
- * List of objects currently involved in rendering from the
- * ringbuffer.
- *
- * Includes buffers having the contents of their GPU caches
- * flushed, not necessarily primitives. last_read_req
- * represents when the rendering involved will be completed.
- *
- * A reference is held on the buffer while on this list.
- */
- struct list_head active_list;
-
/**
* List of breadcrumbs associated with GPU requests currently
* outstanding.
projects / linux.git / commitdiff