/* some bookkeeping */
static void i915_gem_info_add_obj(struct drm_i915_private *dev_priv,
- size_t size)
+ u64 size)
{
spin_lock(&dev_priv->mm.object_stat_lock);
dev_priv->mm.object_count++;
}
static void i915_gem_info_remove_obj(struct drm_i915_private *dev_priv,
- size_t size)
+ u64 size)
{
spin_lock(&dev_priv->mm.object_stat_lock);
dev_priv->mm.object_count--;
if (node.allocated) {
wmb();
ggtt->base.clear_range(&ggtt->base,
- node.start, node.size,
- true);
+ node.start, node.size);
i915_gem_object_unpin_pages(obj);
remove_mappable_node(&node);
} else {
if (node.allocated) {
wmb();
ggtt->base.clear_range(&ggtt->base,
- node.start, node.size,
- true);
+ node.start, node.size);
i915_gem_object_unpin_pages(obj);
remove_mappable_node(&node);
} else {
view.params.partial.offset = rounddown(page_offset, chunk_size);
view.params.partial.size =
min_t(unsigned int, chunk_size,
- (area->vm_end - area->vm_start) / PAGE_SIZE -
- view.params.partial.offset);
+ vma_pages(area) - view.params.partial.offset);
/* If the partial covers the entire object, just create a
* normal VMA.
return 0;
}
+static unsigned int swiotlb_max_size(void)
+{
+#if IS_ENABLED(CONFIG_SWIOTLB)
+ return rounddown(swiotlb_nr_tbl() << IO_TLB_SHIFT, PAGE_SIZE);
+#else
+ return 0;
+#endif
+}
+
static int
i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
{
struct sgt_iter sgt_iter;
struct page *page;
unsigned long last_pfn = 0; /* suppress gcc warning */
+ unsigned int max_segment;
int ret;
gfp_t gfp;
BUG_ON(obj->base.read_domains & I915_GEM_GPU_DOMAINS);
BUG_ON(obj->base.write_domain & I915_GEM_GPU_DOMAINS);
+ max_segment = swiotlb_max_size();
+ if (!max_segment)
+ max_segment = rounddown(UINT_MAX, PAGE_SIZE);
+
st = kmalloc(sizeof(*st), GFP_KERNEL);
if (st == NULL)
return -ENOMEM;
* our own buffer, now let the real VM do its job and
* go down in flames if truly OOM.
*/
- i915_gem_shrink_all(dev_priv);
page = shmem_read_mapping_page(mapping, i);
if (IS_ERR(page)) {
ret = PTR_ERR(page);
goto err_pages;
}
}
-#ifdef CONFIG_SWIOTLB
- if (swiotlb_nr_tbl()) {
- st->nents++;
- sg_set_page(sg, page, PAGE_SIZE, 0);
- sg = sg_next(sg);
- continue;
- }
-#endif
- if (!i || page_to_pfn(page) != last_pfn + 1) {
+ if (!i ||
+ sg->length >= max_segment ||
+ page_to_pfn(page) != last_pfn + 1) {
if (i)
sg = sg_next(sg);
st->nents++;
/* Check that the i965g/gm workaround works. */
WARN_ON((gfp & __GFP_DMA32) && (last_pfn >= 0x00100000UL));
}
-#ifdef CONFIG_SWIOTLB
- if (!swiotlb_nr_tbl())
-#endif
+ if (sg) /* loop terminated early; short sg table */
sg_mark_end(sg);
obj->pages = st;
struct i915_gem_context *incomplete_ctx;
bool ring_hung;
- /* Ensure irq handler finishes, and not run again. */
- tasklet_kill(&engine->irq_tasklet);
if (engine->irq_seqno_barrier)
engine->irq_seqno_barrier(engine);
return;
ring_hung = engine->hangcheck.score >= HANGCHECK_SCORE_RING_HUNG;
+ if (engine->hangcheck.seqno != intel_engine_get_seqno(engine))
+ ring_hung = false;
+
i915_set_reset_status(request->ctx, ring_hung);
if (!ring_hung)
return;
void i915_gem_reset(struct drm_i915_private *dev_priv)
{
struct intel_engine_cs *engine;
+ enum intel_engine_id id;
i915_gem_retire_requests(dev_priv);
- for_each_engine(engine, dev_priv)
+ for_each_engine(engine, dev_priv, id)
i915_gem_reset_engine(engine);
i915_gem_restore_fences(&dev_priv->drm);
void i915_gem_set_wedged(struct drm_i915_private *dev_priv)
{
struct intel_engine_cs *engine;
+ enum intel_engine_id id;
lockdep_assert_held(&dev_priv->drm.struct_mutex);
set_bit(I915_WEDGED, &dev_priv->gpu_error.flags);
i915_gem_context_lost(dev_priv);
- for_each_engine(engine, dev_priv)
+ for_each_engine(engine, dev_priv, id)
i915_gem_cleanup_engine(engine);
mod_delayed_work(dev_priv->wq, &dev_priv->gt.idle_work, 0);
container_of(work, typeof(*dev_priv), gt.idle_work.work);
struct drm_device *dev = &dev_priv->drm;
struct intel_engine_cs *engine;
+ enum intel_engine_id id;
bool rearm_hangcheck;
if (!READ_ONCE(dev_priv->gt.awake))
if (dev_priv->gt.active_engines)
goto out_unlock;
- for_each_engine(engine, dev_priv)
+ for_each_engine(engine, dev_priv, id)
i915_gem_batch_pool_fini(&engine->batch_pool);
GEM_BUG_ON(!dev_priv->gt.awake);
unsigned int flags)
{
struct intel_engine_cs *engine;
+ enum intel_engine_id id;
int ret;
- for_each_engine(engine, dev_priv) {
+ for_each_engine(engine, dev_priv, id) {
if (engine->last_context == NULL)
continue;
goto err_unpin;
}
+
+ GEM_BUG_ON(vma->node.start < start);
+ GEM_BUG_ON(vma->node.start + vma->node.size > end);
}
GEM_BUG_ON(!i915_gem_valid_gtt_space(vma, obj->cache_level));
*/
wmb();
if (INTEL_GEN(dev_priv) >= 6 && !HAS_LLC(dev_priv))
- POSTING_READ(RING_ACTHD(dev_priv->engine[RCS].mmio_base));
+ POSTING_READ(RING_ACTHD(dev_priv->engine[RCS]->mmio_base));
intel_fb_obj_flush(obj, false, write_origin(obj, I915_GEM_DOMAIN_GTT));
level = I915_CACHE_LLC;
break;
case I915_CACHING_DISPLAY:
- level = HAS_WT(dev) ? I915_CACHE_WT : I915_CACHE_NONE;
+ level = HAS_WT(dev_priv) ? I915_CACHE_WT : I915_CACHE_NONE;
break;
default:
return -EINVAL;
* with that bit in the PTE to main memory with just one PIPE_CONTROL.
*/
ret = i915_gem_object_set_cache_level(obj,
- HAS_WT(obj->base.dev) ? I915_CACHE_WT : I915_CACHE_NONE);
+ HAS_WT(to_i915(obj->base.dev)) ?
+ I915_CACHE_WT : I915_CACHE_NONE);
if (ret) {
vma = ERR_PTR(ret);
goto err_unpin_display;
u64 alignment,
u64 flags)
{
- struct i915_address_space *vm = &to_i915(obj->base.dev)->ggtt.base;
+ struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
+ struct i915_address_space *vm = &dev_priv->ggtt.base;
struct i915_vma *vma;
int ret;
(i915_vma_is_pinned(vma) || i915_vma_is_active(vma)))
return ERR_PTR(-ENOSPC);
+ if (flags & PIN_MAPPABLE) {
+ u32 fence_size;
+
+ fence_size = i915_gem_get_ggtt_size(dev_priv, vma->size,
+ i915_gem_object_get_tiling(obj));
+ /* If the required space is larger than the available
+ * aperture, we will not able to find a slot for the
+ * object and unbinding the object now will be in
+ * vain. Worse, doing so may cause us to ping-pong
+ * the object in and out of the Global GTT and
+ * waste a lot of cycles under the mutex.
+ */
+ if (fence_size > dev_priv->ggtt.mappable_end)
+ return ERR_PTR(-E2BIG);
+
+ /* If NONBLOCK is set the caller is optimistically
+ * trying to cache the full object within the mappable
+ * aperture, and *must* have a fallback in place for
+ * situations where we cannot bind the object. We
+ * can be a little more lax here and use the fallback
+ * more often to avoid costly migrations of ourselves
+ * and other objects within the aperture.
+ *
+ * Half-the-aperture is used as a simple heuristic.
+ * More interesting would to do search for a free
+ * block prior to making the commitment to unbind.
+ * That caters for the self-harm case, and with a
+ * little more heuristics (e.g. NOFAULT, NOEVICT)
+ * we could try to minimise harm to others.
+ */
+ if (flags & PIN_NONBLOCK &&
+ fence_size > dev_priv->ggtt.mappable_end / 2)
+ return ERR_PTR(-ENOSPC);
+ }
+
WARN(i915_vma_is_pinned(vma),
"bo is already pinned in ggtt with incorrect alignment:"
" offset=%08x, req.alignment=%llx,"
.put_pages = i915_gem_object_put_pages_gtt,
};
-struct drm_i915_gem_object *i915_gem_object_create(struct drm_device *dev,
- size_t size)
+/* Note we don't consider signbits :| */
+#define overflows_type(x, T) \
+ (sizeof(x) > sizeof(T) && (x) >> (sizeof(T) * BITS_PER_BYTE))
+
+struct drm_i915_gem_object *
+i915_gem_object_create(struct drm_device *dev, u64 size)
{
struct drm_i915_gem_object *obj;
struct address_space *mapping;
gfp_t mask;
int ret;
+ /* There is a prevalence of the assumption that we fit the object's
+ * page count inside a 32bit _signed_ variable. Let's document this and
+ * catch if we ever need to fix it. In the meantime, if you do spot
+ * such a local variable, please consider fixing!
+ */
+ if (WARN_ON(size >> PAGE_SHIFT > INT_MAX))
+ return ERR_PTR(-E2BIG);
+
+ if (overflows_type(size, obj->base.size))
+ return ERR_PTR(-E2BIG);
+
obj = i915_gem_object_alloc(dev);
if (obj == NULL)
return ERR_PTR(-ENOMEM);
*/
WARN_ON(dev_priv->gt.awake);
+ /*
+ * Neither the BIOS, ourselves or any other kernel
+ * expects the system to be in execlists mode on startup,
+ * so we need to reset the GPU back to legacy mode. And the only
+ * known way to disable logical contexts is through a GPU reset.
+ *
+ * So in order to leave the system in a known default configuration,
+ * always reset the GPU upon unload and suspend. Afterwards we then
+ * clean up the GEM state tracking, flushing off the requests and
+ * leaving the system in a known idle state.
+ *
+ * Note that is of the upmost importance that the GPU is idle and
+ * all stray writes are flushed *before* we dismantle the backing
+ * storage for the pinned objects.
+ *
+ * However, since we are uncertain that resetting the GPU on older
+ * machines is a good idea, we don't - just in case it leaves the
+ * machine in an unusable condition.
+ */
+ if (HAS_HW_CONTEXTS(dev)) {
+ int reset = intel_gpu_reset(dev_priv, ALL_ENGINES);
+ WARN_ON(reset && reset != -ENODEV);
+ }
+
return 0;
err:
I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |
DISP_TILE_SURFACE_SWIZZLING);
- if (IS_GEN5(dev))
+ if (IS_GEN5(dev_priv))
return;
I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_SWZCTL);
- if (IS_GEN6(dev))
+ if (IS_GEN6(dev_priv))
I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_SNB));
- else if (IS_GEN7(dev))
+ else if (IS_GEN7(dev_priv))
I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_IVB));
- else if (IS_GEN8(dev))
+ else if (IS_GEN8(dev_priv))
I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_BDW));
else
BUG();
}
-static void init_unused_ring(struct drm_device *dev, u32 base)
+static void init_unused_ring(struct drm_i915_private *dev_priv, u32 base)
{
- struct drm_i915_private *dev_priv = to_i915(dev);
-
I915_WRITE(RING_CTL(base), 0);
I915_WRITE(RING_HEAD(base), 0);
I915_WRITE(RING_TAIL(base), 0);
I915_WRITE(RING_START(base), 0);
}
-static void init_unused_rings(struct drm_device *dev)
-{
- if (IS_I830(dev)) {
- init_unused_ring(dev, PRB1_BASE);
- init_unused_ring(dev, SRB0_BASE);
- init_unused_ring(dev, SRB1_BASE);
- init_unused_ring(dev, SRB2_BASE);
- init_unused_ring(dev, SRB3_BASE);
- } else if (IS_GEN2(dev)) {
- init_unused_ring(dev, SRB0_BASE);
- init_unused_ring(dev, SRB1_BASE);
- } else if (IS_GEN3(dev)) {
- init_unused_ring(dev, PRB1_BASE);
- init_unused_ring(dev, PRB2_BASE);
+static void init_unused_rings(struct drm_i915_private *dev_priv)
+{
+ if (IS_I830(dev_priv)) {
+ init_unused_ring(dev_priv, PRB1_BASE);
+ init_unused_ring(dev_priv, SRB0_BASE);
+ init_unused_ring(dev_priv, SRB1_BASE);
+ init_unused_ring(dev_priv, SRB2_BASE);
+ init_unused_ring(dev_priv, SRB3_BASE);
+ } else if (IS_GEN2(dev_priv)) {
+ init_unused_ring(dev_priv, SRB0_BASE);
+ init_unused_ring(dev_priv, SRB1_BASE);
+ } else if (IS_GEN3(dev_priv)) {
+ init_unused_ring(dev_priv, PRB1_BASE);
+ init_unused_ring(dev_priv, PRB2_BASE);
}
}
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_engine_cs *engine;
+ enum intel_engine_id id;
int ret;
/* Double layer security blanket, see i915_gem_init() */
if (HAS_EDRAM(dev) && INTEL_GEN(dev_priv) < 9)
I915_WRITE(HSW_IDICR, I915_READ(HSW_IDICR) | IDIHASHMSK(0xf));
- if (IS_HASWELL(dev))
- I915_WRITE(MI_PREDICATE_RESULT_2, IS_HSW_GT3(dev) ?
+ if (IS_HASWELL(dev_priv))
+ I915_WRITE(MI_PREDICATE_RESULT_2, IS_HSW_GT3(dev_priv) ?
LOWER_SLICE_ENABLED : LOWER_SLICE_DISABLED);
- if (HAS_PCH_NOP(dev)) {
- if (IS_IVYBRIDGE(dev)) {
+ if (HAS_PCH_NOP(dev_priv)) {
+ if (IS_IVYBRIDGE(dev_priv)) {
u32 temp = I915_READ(GEN7_MSG_CTL);
temp &= ~(WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK);
I915_WRITE(GEN7_MSG_CTL, temp);
* will prevent c3 entry. Makes sure all unused rings
* are totally idle.
*/
- init_unused_rings(dev);
+ init_unused_rings(dev_priv);
BUG_ON(!dev_priv->kernel_context);
}
/* Need to do basic initialisation of all rings first: */
- for_each_engine(engine, dev_priv) {
+ for_each_engine(engine, dev_priv, id) {
ret = engine->init_hw(engine);
if (ret)
goto out;
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_engine_cs *engine;
+ enum intel_engine_id id;
- for_each_engine(engine, dev_priv)
+ for_each_engine(engine, dev_priv, id)
dev_priv->gt.cleanup_engine(engine);
}
-static void
-init_engine_lists(struct intel_engine_cs *engine)
-{
- INIT_LIST_HEAD(&engine->request_list);
-}
-
void
i915_gem_load_init_fences(struct drm_i915_private *dev_priv)
{
i915_gem_load_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
- int i;
dev_priv->objects =
kmem_cache_create("i915_gem_object",
INIT_LIST_HEAD(&dev_priv->mm.unbound_list);
INIT_LIST_HEAD(&dev_priv->mm.bound_list);
INIT_LIST_HEAD(&dev_priv->mm.fence_list);
- for (i = 0; i < I915_NUM_ENGINES; i++)
- init_engine_lists(&dev_priv->engine[i]);
INIT_DELAYED_WORK(&dev_priv->gt.retire_work,
i915_gem_retire_work_handler);
INIT_DELAYED_WORK(&dev_priv->gt.idle_work,
git.samba.org / sfrench / cifs-2.6.git / blobdiff