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path: root/drivers/gpu/drm/i915/i915_gem.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c1276
1 files changed, 737 insertions, 539 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index aad26851c..a77ce9983 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -54,12 +54,33 @@ static bool cpu_cache_is_coherent(struct drm_device *dev,
static bool cpu_write_needs_clflush(struct drm_i915_gem_object *obj)
{
+ if (obj->base.write_domain == I915_GEM_DOMAIN_CPU)
+ return false;
+
if (!cpu_cache_is_coherent(obj->base.dev, obj->cache_level))
return true;
return obj->pin_display;
}
+static int
+insert_mappable_node(struct drm_i915_private *i915,
+ struct drm_mm_node *node, u32 size)
+{
+ memset(node, 0, sizeof(*node));
+ return drm_mm_insert_node_in_range_generic(&i915->ggtt.base.mm, node,
+ size, 0, 0, 0,
+ i915->ggtt.mappable_end,
+ DRM_MM_SEARCH_DEFAULT,
+ DRM_MM_CREATE_DEFAULT);
+}
+
+static void
+remove_mappable_node(struct drm_mm_node *node)
+{
+ drm_mm_remove_node(node);
+}
+
/* some bookkeeping */
static void i915_gem_info_add_obj(struct drm_i915_private *dev_priv,
size_t size)
@@ -107,7 +128,7 @@ i915_gem_wait_for_error(struct i915_gpu_error *error)
int i915_mutex_lock_interruptible(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
int ret;
ret = i915_gem_wait_for_error(&dev_priv->gpu_error);
@@ -151,7 +172,7 @@ i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
static int
i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj)
{
- struct address_space *mapping = file_inode(obj->base.filp)->i_mapping;
+ struct address_space *mapping = obj->base.filp->f_mapping;
char *vaddr = obj->phys_handle->vaddr;
struct sg_table *st;
struct scatterlist *sg;
@@ -177,7 +198,7 @@ i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj)
vaddr += PAGE_SIZE;
}
- i915_gem_chipset_flush(obj->base.dev);
+ i915_gem_chipset_flush(to_i915(obj->base.dev));
st = kmalloc(sizeof(*st), GFP_KERNEL);
if (st == NULL)
@@ -218,7 +239,7 @@ i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj)
obj->dirty = 0;
if (obj->dirty) {
- struct address_space *mapping = file_inode(obj->base.filp)->i_mapping;
+ struct address_space *mapping = obj->base.filp->f_mapping;
char *vaddr = obj->phys_handle->vaddr;
int i;
@@ -347,7 +368,7 @@ i915_gem_phys_pwrite(struct drm_i915_gem_object *obj,
}
drm_clflush_virt_range(vaddr, args->size);
- i915_gem_chipset_flush(dev);
+ i915_gem_chipset_flush(to_i915(dev));
out:
intel_fb_obj_flush(obj, false, ORIGIN_CPU);
@@ -356,13 +377,13 @@ out:
void *i915_gem_object_alloc(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
return kmem_cache_zalloc(dev_priv->objects, GFP_KERNEL);
}
void i915_gem_object_free(struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
kmem_cache_free(dev_priv->objects, obj);
}
@@ -381,9 +402,9 @@ i915_gem_create(struct drm_file *file,
return -EINVAL;
/* Allocate the new object */
- obj = i915_gem_alloc_object(dev, size);
- if (obj == NULL)
- return -ENOMEM;
+ obj = i915_gem_object_create(dev, size);
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
ret = drm_gem_handle_create(file, &obj->base, &handle);
/* drop reference from allocate - handle holds it now */
@@ -409,6 +430,9 @@ i915_gem_dumb_create(struct drm_file *file,
/**
* Creates a new mm object and returns a handle to it.
+ * @dev: drm device pointer
+ * @data: ioctl data blob
+ * @file: drm file pointer
*/
int
i915_gem_create_ioctl(struct drm_device *dev, void *data,
@@ -484,7 +508,7 @@ int i915_gem_obj_prepare_shmem_read(struct drm_i915_gem_object *obj,
*needs_clflush = 0;
- if (WARN_ON((obj->ops->flags & I915_GEM_OBJECT_HAS_STRUCT_PAGE) == 0))
+ if (WARN_ON(!i915_gem_object_has_struct_page(obj)))
return -EINVAL;
if (!(obj->base.read_domains & I915_GEM_DOMAIN_CPU)) {
@@ -585,6 +609,142 @@ shmem_pread_slow(struct page *page, int shmem_page_offset, int page_length,
return ret ? - EFAULT : 0;
}
+static inline unsigned long
+slow_user_access(struct io_mapping *mapping,
+ uint64_t page_base, int page_offset,
+ char __user *user_data,
+ unsigned long length, bool pwrite)
+{
+ void __iomem *ioaddr;
+ void *vaddr;
+ uint64_t unwritten;
+
+ ioaddr = io_mapping_map_wc(mapping, page_base, PAGE_SIZE);
+ /* We can use the cpu mem copy function because this is X86. */
+ vaddr = (void __force *)ioaddr + page_offset;
+ if (pwrite)
+ unwritten = __copy_from_user(vaddr, user_data, length);
+ else
+ unwritten = __copy_to_user(user_data, vaddr, length);
+
+ io_mapping_unmap(ioaddr);
+ return unwritten;
+}
+
+static int
+i915_gem_gtt_pread(struct drm_device *dev,
+ struct drm_i915_gem_object *obj, uint64_t size,
+ uint64_t data_offset, uint64_t data_ptr)
+{
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ struct i915_ggtt *ggtt = &dev_priv->ggtt;
+ struct drm_mm_node node;
+ char __user *user_data;
+ uint64_t remain;
+ uint64_t offset;
+ int ret;
+
+ ret = i915_gem_obj_ggtt_pin(obj, 0, PIN_MAPPABLE);
+ if (ret) {
+ ret = insert_mappable_node(dev_priv, &node, PAGE_SIZE);
+ if (ret)
+ goto out;
+
+ ret = i915_gem_object_get_pages(obj);
+ if (ret) {
+ remove_mappable_node(&node);
+ goto out;
+ }
+
+ i915_gem_object_pin_pages(obj);
+ } else {
+ node.start = i915_gem_obj_ggtt_offset(obj);
+ node.allocated = false;
+ ret = i915_gem_object_put_fence(obj);
+ if (ret)
+ goto out_unpin;
+ }
+
+ ret = i915_gem_object_set_to_gtt_domain(obj, false);
+ if (ret)
+ goto out_unpin;
+
+ user_data = u64_to_user_ptr(data_ptr);
+ remain = size;
+ offset = data_offset;
+
+ mutex_unlock(&dev->struct_mutex);
+ if (likely(!i915.prefault_disable)) {
+ ret = fault_in_multipages_writeable(user_data, remain);
+ if (ret) {
+ mutex_lock(&dev->struct_mutex);
+ goto out_unpin;
+ }
+ }
+
+ while (remain > 0) {
+ /* Operation in this page
+ *
+ * page_base = page offset within aperture
+ * page_offset = offset within page
+ * page_length = bytes to copy for this page
+ */
+ u32 page_base = node.start;
+ unsigned page_offset = offset_in_page(offset);
+ unsigned page_length = PAGE_SIZE - page_offset;
+ page_length = remain < page_length ? remain : page_length;
+ if (node.allocated) {
+ wmb();
+ ggtt->base.insert_page(&ggtt->base,
+ i915_gem_object_get_dma_address(obj, offset >> PAGE_SHIFT),
+ node.start,
+ I915_CACHE_NONE, 0);
+ wmb();
+ } else {
+ page_base += offset & PAGE_MASK;
+ }
+ /* This is a slow read/write as it tries to read from
+ * and write to user memory which may result into page
+ * faults, and so we cannot perform this under struct_mutex.
+ */
+ if (slow_user_access(ggtt->mappable, page_base,
+ page_offset, user_data,
+ page_length, false)) {
+ ret = -EFAULT;
+ break;
+ }
+
+ remain -= page_length;
+ user_data += page_length;
+ offset += page_length;
+ }
+
+ mutex_lock(&dev->struct_mutex);
+ if (ret == 0 && (obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) {
+ /* The user has modified the object whilst we tried
+ * reading from it, and we now have no idea what domain
+ * the pages should be in. As we have just been touching
+ * them directly, flush everything back to the GTT
+ * domain.
+ */
+ ret = i915_gem_object_set_to_gtt_domain(obj, false);
+ }
+
+out_unpin:
+ if (node.allocated) {
+ wmb();
+ ggtt->base.clear_range(&ggtt->base,
+ node.start, node.size,
+ true);
+ i915_gem_object_unpin_pages(obj);
+ remove_mappable_node(&node);
+ } else {
+ i915_gem_object_ggtt_unpin(obj);
+ }
+out:
+ return ret;
+}
+
static int
i915_gem_shmem_pread(struct drm_device *dev,
struct drm_i915_gem_object *obj,
@@ -600,6 +760,9 @@ i915_gem_shmem_pread(struct drm_device *dev,
int needs_clflush = 0;
struct sg_page_iter sg_iter;
+ if (!i915_gem_object_has_struct_page(obj))
+ return -ENODEV;
+
user_data = u64_to_user_ptr(args->data_ptr);
remain = args->size;
@@ -672,6 +835,9 @@ out:
/**
* Reads data from the object referenced by handle.
+ * @dev: drm device pointer
+ * @data: ioctl data blob
+ * @file: drm file pointer
*
* On error, the contents of *data are undefined.
*/
@@ -708,18 +874,18 @@ i915_gem_pread_ioctl(struct drm_device *dev, void *data,
goto out;
}
- /* prime objects have no backing filp to GEM pread/pwrite
- * pages from.
- */
- if (!obj->base.filp) {
- ret = -EINVAL;
- goto out;
- }
-
trace_i915_gem_object_pread(obj, args->offset, args->size);
ret = i915_gem_shmem_pread(dev, obj, args, file);
+ /* pread for non shmem backed objects */
+ if (ret == -EFAULT || ret == -ENODEV) {
+ intel_runtime_pm_get(to_i915(dev));
+ ret = i915_gem_gtt_pread(dev, obj, args->size,
+ args->offset, args->data_ptr);
+ intel_runtime_pm_put(to_i915(dev));
+ }
+
out:
drm_gem_object_unreference(&obj->base);
unlock:
@@ -753,60 +919,99 @@ fast_user_write(struct io_mapping *mapping,
/**
* This is the fast pwrite path, where we copy the data directly from the
* user into the GTT, uncached.
+ * @dev: drm device pointer
+ * @obj: i915 gem object
+ * @args: pwrite arguments structure
+ * @file: drm file pointer
*/
static int
-i915_gem_gtt_pwrite_fast(struct drm_device *dev,
+i915_gem_gtt_pwrite_fast(struct drm_i915_private *i915,
struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args,
struct drm_file *file)
{
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct i915_ggtt *ggtt = &dev_priv->ggtt;
- ssize_t remain;
- loff_t offset, page_base;
+ struct i915_ggtt *ggtt = &i915->ggtt;
+ struct drm_device *dev = obj->base.dev;
+ struct drm_mm_node node;
+ uint64_t remain, offset;
char __user *user_data;
- int page_offset, page_length, ret;
+ int ret;
+ bool hit_slow_path = false;
+
+ if (obj->tiling_mode != I915_TILING_NONE)
+ return -EFAULT;
ret = i915_gem_obj_ggtt_pin(obj, 0, PIN_MAPPABLE | PIN_NONBLOCK);
- if (ret)
- goto out;
+ if (ret) {
+ ret = insert_mappable_node(i915, &node, PAGE_SIZE);
+ if (ret)
+ goto out;
+
+ ret = i915_gem_object_get_pages(obj);
+ if (ret) {
+ remove_mappable_node(&node);
+ goto out;
+ }
+
+ i915_gem_object_pin_pages(obj);
+ } else {
+ node.start = i915_gem_obj_ggtt_offset(obj);
+ node.allocated = false;
+ ret = i915_gem_object_put_fence(obj);
+ if (ret)
+ goto out_unpin;
+ }
ret = i915_gem_object_set_to_gtt_domain(obj, true);
if (ret)
goto out_unpin;
- ret = i915_gem_object_put_fence(obj);
- if (ret)
- goto out_unpin;
+ intel_fb_obj_invalidate(obj, ORIGIN_GTT);
+ obj->dirty = true;
user_data = u64_to_user_ptr(args->data_ptr);
+ offset = args->offset;
remain = args->size;
-
- offset = i915_gem_obj_ggtt_offset(obj) + args->offset;
-
- intel_fb_obj_invalidate(obj, ORIGIN_GTT);
-
- while (remain > 0) {
+ while (remain) {
/* Operation in this page
*
* page_base = page offset within aperture
* page_offset = offset within page
* page_length = bytes to copy for this page
*/
- page_base = offset & PAGE_MASK;
- page_offset = offset_in_page(offset);
- page_length = remain;
- if ((page_offset + remain) > PAGE_SIZE)
- page_length = PAGE_SIZE - page_offset;
-
+ u32 page_base = node.start;
+ unsigned page_offset = offset_in_page(offset);
+ unsigned page_length = PAGE_SIZE - page_offset;
+ page_length = remain < page_length ? remain : page_length;
+ if (node.allocated) {
+ wmb(); /* flush the write before we modify the GGTT */
+ ggtt->base.insert_page(&ggtt->base,
+ i915_gem_object_get_dma_address(obj, offset >> PAGE_SHIFT),
+ node.start, I915_CACHE_NONE, 0);
+ wmb(); /* flush modifications to the GGTT (insert_page) */
+ } else {
+ page_base += offset & PAGE_MASK;
+ }
/* If we get a fault while copying data, then (presumably) our
* source page isn't available. Return the error and we'll
* retry in the slow path.
+ * If the object is non-shmem backed, we retry again with the
+ * path that handles page fault.
*/
if (fast_user_write(ggtt->mappable, page_base,
page_offset, user_data, page_length)) {
- ret = -EFAULT;
- goto out_flush;
+ hit_slow_path = true;
+ mutex_unlock(&dev->struct_mutex);
+ if (slow_user_access(ggtt->mappable,
+ page_base,
+ page_offset, user_data,
+ page_length, true)) {
+ ret = -EFAULT;
+ mutex_lock(&dev->struct_mutex);
+ goto out_flush;
+ }
+
+ mutex_lock(&dev->struct_mutex);
}
remain -= page_length;
@@ -815,9 +1020,31 @@ i915_gem_gtt_pwrite_fast(struct drm_device *dev,
}
out_flush:
+ if (hit_slow_path) {
+ if (ret == 0 &&
+ (obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) {
+ /* The user has modified the object whilst we tried
+ * reading from it, and we now have no idea what domain
+ * the pages should be in. As we have just been touching
+ * them directly, flush everything back to the GTT
+ * domain.
+ */
+ ret = i915_gem_object_set_to_gtt_domain(obj, false);
+ }
+ }
+
intel_fb_obj_flush(obj, false, ORIGIN_GTT);
out_unpin:
- i915_gem_object_ggtt_unpin(obj);
+ if (node.allocated) {
+ wmb();
+ ggtt->base.clear_range(&ggtt->base,
+ node.start, node.size,
+ true);
+ i915_gem_object_unpin_pages(obj);
+ remove_mappable_node(&node);
+ } else {
+ i915_gem_object_ggtt_unpin(obj);
+ }
out:
return ret;
}
@@ -1006,7 +1233,7 @@ out:
}
if (needs_clflush_after)
- i915_gem_chipset_flush(dev);
+ i915_gem_chipset_flush(to_i915(dev));
else
obj->cache_dirty = true;
@@ -1016,6 +1243,9 @@ out:
/**
* Writes data to the object referenced by handle.
+ * @dev: drm device
+ * @data: ioctl data blob
+ * @file: drm file
*
* On error, the contents of the buffer that were to be modified are undefined.
*/
@@ -1023,7 +1253,7 @@ int
i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_pwrite *args = data;
struct drm_i915_gem_object *obj;
int ret;
@@ -1062,14 +1292,6 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
goto out;
}
- /* prime objects have no backing filp to GEM pread/pwrite
- * pages from.
- */
- if (!obj->base.filp) {
- ret = -EINVAL;
- goto out;
- }
-
trace_i915_gem_object_pwrite(obj, args->offset, args->size);
ret = -EFAULT;
@@ -1079,10 +1301,9 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
* pread/pwrite currently are reading and writing from the CPU
* perspective, requiring manual detiling by the client.
*/
- if (obj->tiling_mode == I915_TILING_NONE &&
- obj->base.write_domain != I915_GEM_DOMAIN_CPU &&
+ if (!i915_gem_object_has_struct_page(obj) ||
cpu_write_needs_clflush(obj)) {
- ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file);
+ ret = i915_gem_gtt_pwrite_fast(dev_priv, obj, args, file);
/* Note that the gtt paths might fail with non-page-backed user
* pointers (e.g. gtt mappings when moving data between
* textures). Fallback to the shmem path in that case. */
@@ -1091,8 +1312,10 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
if (ret == -EFAULT || ret == -ENOSPC) {
if (obj->phys_handle)
ret = i915_gem_phys_pwrite(obj, args, file);
- else
+ else if (i915_gem_object_has_struct_page(obj))
ret = i915_gem_shmem_pwrite(dev, obj, args, file);
+ else
+ ret = -ENODEV;
}
out:
@@ -1123,17 +1346,6 @@ i915_gem_check_wedge(unsigned reset_counter, bool interruptible)
return 0;
}
-static void fake_irq(unsigned long data)
-{
- wake_up_process((struct task_struct *)data);
-}
-
-static bool missed_irq(struct drm_i915_private *dev_priv,
- struct intel_engine_cs *engine)
-{
- return test_bit(engine->id, &dev_priv->gpu_error.missed_irq_rings);
-}
-
static unsigned long local_clock_us(unsigned *cpu)
{
unsigned long t;
@@ -1166,9 +1378,9 @@ static bool busywait_stop(unsigned long timeout, unsigned cpu)
return this_cpu != cpu;
}
-static int __i915_spin_request(struct drm_i915_gem_request *req, int state)
+bool __i915_spin_request(const struct drm_i915_gem_request *req,
+ int state, unsigned long timeout_us)
{
- unsigned long timeout;
unsigned cpu;
/* When waiting for high frequency requests, e.g. during synchronous
@@ -1181,31 +1393,21 @@ static int __i915_spin_request(struct drm_i915_gem_request *req, int state)
* takes to sleep on a request, on the order of a microsecond.
*/
- if (req->engine->irq_refcount)
- return -EBUSY;
-
- /* Only spin if we know the GPU is processing this request */
- if (!i915_gem_request_started(req, true))
- return -EAGAIN;
-
- timeout = local_clock_us(&cpu) + 5;
- while (!need_resched()) {
- if (i915_gem_request_completed(req, true))
- return 0;
+ timeout_us += local_clock_us(&cpu);
+ do {
+ if (i915_gem_request_completed(req))
+ return true;
if (signal_pending_state(state, current))
break;
- if (busywait_stop(timeout, cpu))
+ if (busywait_stop(timeout_us, cpu))
break;
cpu_relax_lowlatency();
- }
+ } while (!need_resched());
- if (i915_gem_request_completed(req, false))
- return 0;
-
- return -EAGAIN;
+ return false;
}
/**
@@ -1213,6 +1415,7 @@ static int __i915_spin_request(struct drm_i915_gem_request *req, int state)
* @req: duh!
* @interruptible: do an interruptible wait (normally yes)
* @timeout: in - how long to wait (NULL forever); out - how much time remaining
+ * @rps: RPS client
*
* Note: It is of utmost importance that the passed in seqno and reset_counter
* values have been read by the caller in an smp safe manner. Where read-side
@@ -1229,26 +1432,22 @@ int __i915_wait_request(struct drm_i915_gem_request *req,
s64 *timeout,
struct intel_rps_client *rps)
{
- struct intel_engine_cs *engine = i915_gem_request_get_engine(req);
- struct drm_device *dev = engine->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- const bool irq_test_in_progress =
- ACCESS_ONCE(dev_priv->gpu_error.test_irq_rings) & intel_engine_flag(engine);
int state = interruptible ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE;
- DEFINE_WAIT(wait);
- unsigned long timeout_expire;
+ DEFINE_WAIT(reset);
+ struct intel_wait wait;
+ unsigned long timeout_remain;
s64 before = 0; /* Only to silence a compiler warning. */
- int ret;
+ int ret = 0;
- WARN(!intel_irqs_enabled(dev_priv), "IRQs disabled");
+ might_sleep();
if (list_empty(&req->list))
return 0;
- if (i915_gem_request_completed(req, true))
+ if (i915_gem_request_completed(req))
return 0;
- timeout_expire = 0;
+ timeout_remain = MAX_SCHEDULE_TIMEOUT;
if (timeout) {
if (WARN_ON(*timeout < 0))
return -EINVAL;
@@ -1256,7 +1455,7 @@ int __i915_wait_request(struct drm_i915_gem_request *req,
if (*timeout == 0)
return -ETIME;
- timeout_expire = jiffies + nsecs_to_jiffies_timeout(*timeout);
+ timeout_remain = nsecs_to_jiffies_timeout(*timeout);
/*
* Record current time in case interrupted by signal, or wedged.
@@ -1264,75 +1463,76 @@ int __i915_wait_request(struct drm_i915_gem_request *req,
before = ktime_get_raw_ns();
}
- if (INTEL_INFO(dev_priv)->gen >= 6)
- gen6_rps_boost(dev_priv, rps, req->emitted_jiffies);
-
trace_i915_gem_request_wait_begin(req);
- /* Optimistic spin for the next jiffie before touching IRQs */
- ret = __i915_spin_request(req, state);
- if (ret == 0)
- goto out;
-
- if (!irq_test_in_progress && WARN_ON(!engine->irq_get(engine))) {
- ret = -ENODEV;
- goto out;
- }
+ /* This client is about to stall waiting for the GPU. In many cases
+ * this is undesirable and limits the throughput of the system, as
+ * many clients cannot continue processing user input/output whilst
+ * blocked. RPS autotuning may take tens of milliseconds to respond
+ * to the GPU load and thus incurs additional latency for the client.
+ * We can circumvent that by promoting the GPU frequency to maximum
+ * before we wait. This makes the GPU throttle up much more quickly
+ * (good for benchmarks and user experience, e.g. window animations),
+ * but at a cost of spending more power processing the workload
+ * (bad for battery). Not all clients even want their results
+ * immediately and for them we should just let the GPU select its own
+ * frequency to maximise efficiency. To prevent a single client from
+ * forcing the clocks too high for the whole system, we only allow
+ * each client to waitboost once in a busy period.
+ */
+ if (INTEL_INFO(req->i915)->gen >= 6)
+ gen6_rps_boost(req->i915, rps, req->emitted_jiffies);
- for (;;) {
- struct timer_list timer;
+ /* Optimistic spin for the next ~jiffie before touching IRQs */
+ if (i915_spin_request(req, state, 5))
+ goto complete;
- prepare_to_wait(&engine->irq_queue, &wait, state);
+ set_current_state(state);
+ add_wait_queue(&req->i915->gpu_error.wait_queue, &reset);
- /* We need to check whether any gpu reset happened in between
- * the request being submitted and now. If a reset has occurred,
- * the request is effectively complete (we either are in the
- * process of or have discarded the rendering and completely
- * reset the GPU. The results of the request are lost and we
- * are free to continue on with the original operation.
+ intel_wait_init(&wait, req->seqno);
+ if (intel_engine_add_wait(req->engine, &wait))
+ /* In order to check that we haven't missed the interrupt
+ * as we enabled it, we need to kick ourselves to do a
+ * coherent check on the seqno before we sleep.
*/
- if (req->reset_counter != i915_reset_counter(&dev_priv->gpu_error)) {
- ret = 0;
- break;
- }
-
- if (i915_gem_request_completed(req, false)) {
- ret = 0;
- break;
- }
+ goto wakeup;
+ for (;;) {
if (signal_pending_state(state, current)) {
ret = -ERESTARTSYS;
break;
}
- if (timeout && time_after_eq(jiffies, timeout_expire)) {
+ timeout_remain = io_schedule_timeout(timeout_remain);
+ if (timeout_remain == 0) {
ret = -ETIME;
break;
}
- timer.function = NULL;
- if (timeout || missed_irq(dev_priv, engine)) {
- unsigned long expire;
+ if (intel_wait_complete(&wait))
+ break;
- setup_timer_on_stack(&timer, fake_irq, (unsigned long)current);
- expire = missed_irq(dev_priv, engine) ? jiffies + 1 : timeout_expire;
- mod_timer(&timer, expire);
- }
+ set_current_state(state);
- io_schedule();
+wakeup:
+ /* Carefully check if the request is complete, giving time
+ * for the seqno to be visible following the interrupt.
+ * We also have to check in case we are kicked by the GPU
+ * reset in order to drop the struct_mutex.
+ */
+ if (__i915_request_irq_complete(req))
+ break;
- if (timer.function) {
- del_singleshot_timer_sync(&timer);
- destroy_timer_on_stack(&timer);
- }
+ /* Only spin if we know the GPU is processing this request */
+ if (i915_spin_request(req, state, 2))
+ break;
}
- if (!irq_test_in_progress)
- engine->irq_put(engine);
+ remove_wait_queue(&req->i915->gpu_error.wait_queue, &reset);
- finish_wait(&engine->irq_queue, &wait);
-
-out:
+ intel_engine_remove_wait(req->engine, &wait);
+ __set_current_state(TASK_RUNNING);
+complete:
trace_i915_gem_request_wait_end(req);
if (timeout) {
@@ -1351,6 +1551,22 @@ out:
*timeout = 0;
}
+ if (rps && req->seqno == req->engine->last_submitted_seqno) {
+ /* The GPU is now idle and this client has stalled.
+ * Since no other client has submitted a request in the
+ * meantime, assume that this client is the only one
+ * supplying work to the GPU but is unable to keep that
+ * work supplied because it is waiting. Since the GPU is
+ * then never kept fully busy, RPS autoclocking will
+ * keep the clocks relatively low, causing further delays.
+ * Compensate by giving the synchronous client credit for
+ * a waitboost next time.
+ */
+ spin_lock(&req->i915->rps.client_lock);
+ list_del_init(&rps->link);
+ spin_unlock(&req->i915->rps.client_lock);
+ }
+
return ret;
}
@@ -1413,6 +1629,13 @@ static void i915_gem_request_retire(struct drm_i915_gem_request *request)
list_del_init(&request->list);
i915_gem_request_remove_from_client(request);
+ if (request->previous_context) {
+ if (i915.enable_execlists)
+ intel_lr_context_unpin(request->previous_context,
+ request->engine);
+ }
+
+ i915_gem_context_unreference(request->ctx);
i915_gem_request_unreference(request);
}
@@ -1422,7 +1645,7 @@ __i915_gem_request_retire__upto(struct drm_i915_gem_request *req)
struct intel_engine_cs *engine = req->engine;
struct drm_i915_gem_request *tmp;
- lockdep_assert_held(&engine->dev->struct_mutex);
+ lockdep_assert_held(&engine->i915->drm.struct_mutex);
if (list_empty(&req->list))
return;
@@ -1440,6 +1663,7 @@ __i915_gem_request_retire__upto(struct drm_i915_gem_request *req)
/**
* Waits for a request to be signaled, and cleans up the
* request and object lists appropriately for that event.
+ * @req: request to wait on
*/
int
i915_wait_request(struct drm_i915_gem_request *req)
@@ -1450,14 +1674,14 @@ i915_wait_request(struct drm_i915_gem_request *req)
interruptible = dev_priv->mm.interruptible;
- BUG_ON(!mutex_is_locked(&dev_priv->dev->struct_mutex));
+ BUG_ON(!mutex_is_locked(&dev_priv->drm.struct_mutex));
ret = __i915_wait_request(req, interruptible, NULL, NULL);
if (ret)
return ret;
/* If the GPU hung, we want to keep the requests to find the guilty. */
- if (req->reset_counter == i915_reset_counter(&dev_priv->gpu_error))
+ if (!i915_reset_in_progress(&dev_priv->gpu_error))
__i915_gem_request_retire__upto(req);
return 0;
@@ -1466,6 +1690,8 @@ i915_wait_request(struct drm_i915_gem_request *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.
+ * @obj: i915 gem object
+ * @readonly: waiting for read access or write
*/
int
i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj,
@@ -1516,7 +1742,7 @@ i915_gem_object_retire_request(struct drm_i915_gem_object *obj,
else if (obj->last_write_req == req)
i915_gem_object_retire__write(obj);
- if (req->reset_counter == i915_reset_counter(&req->i915->gpu_error))
+ if (!i915_reset_in_progress(&req->i915->gpu_error))
__i915_gem_request_retire__upto(req);
}
@@ -1529,7 +1755,7 @@ i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj,
bool readonly)
{
struct drm_device *dev = obj->base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_request *requests[I915_NUM_ENGINES];
int ret, i, n = 0;
@@ -1580,9 +1806,19 @@ static struct intel_rps_client *to_rps_client(struct drm_file *file)
return &fpriv->rps;
}
+static enum fb_op_origin
+write_origin(struct drm_i915_gem_object *obj, unsigned domain)
+{
+ return domain == I915_GEM_DOMAIN_GTT && !obj->has_wc_mmap ?
+ ORIGIN_GTT : ORIGIN_CPU;
+}
+
/**
* Called when user space prepares to use an object with the CPU, either
* through the mmap ioctl's mapping or a GTT mapping.
+ * @dev: drm device
+ * @data: ioctl data blob
+ * @file: drm file
*/
int
i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
@@ -1633,9 +1869,7 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0);
if (write_domain != 0)
- intel_fb_obj_invalidate(obj,
- write_domain == I915_GEM_DOMAIN_GTT ?
- ORIGIN_GTT : ORIGIN_CPU);
+ intel_fb_obj_invalidate(obj, write_origin(obj, write_domain));
unref:
drm_gem_object_unreference(&obj->base);
@@ -1646,6 +1880,9 @@ unlock:
/**
* Called when user space has done writes to this buffer
+ * @dev: drm device
+ * @data: ioctl data blob
+ * @file: drm file
*/
int
i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
@@ -1676,8 +1913,11 @@ unlock:
}
/**
- * Maps the contents of an object, returning the address it is mapped
- * into.
+ * i915_gem_mmap_ioctl - Maps the contents of an object, returning the address
+ * it is mapped to.
+ * @dev: drm device
+ * @data: ioctl data blob
+ * @file: drm file
*
* While the mapping holds a reference on the contents of the object, it doesn't
* imply a ref on the object itself.
@@ -1736,6 +1976,9 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
else
addr = -ENOMEM;
up_write(&mm->mmap_sem);
+
+ /* This may race, but that's ok, it only gets set */
+ WRITE_ONCE(to_intel_bo(obj)->has_wc_mmap, true);
}
drm_gem_object_unreference_unlocked(obj);
if (IS_ERR((void *)addr))
@@ -1982,7 +2225,7 @@ i915_gem_get_gtt_size(struct drm_device *dev, uint32_t size, int tiling_mode)
return size;
/* Previous chips need a power-of-two fence region when tiling */
- if (INTEL_INFO(dev)->gen == 3)
+ if (IS_GEN3(dev))
gtt_size = 1024*1024;
else
gtt_size = 512*1024;
@@ -1995,7 +2238,10 @@ i915_gem_get_gtt_size(struct drm_device *dev, uint32_t size, int tiling_mode)
/**
* i915_gem_get_gtt_alignment - return required GTT alignment for an object
- * @obj: object to check
+ * @dev: drm device
+ * @size: object size
+ * @tiling_mode: tiling mode
+ * @fenced: is fenced alignemned required or not
*
* Return the required GTT alignment for an object, taking into account
* potential fence register mapping.
@@ -2021,7 +2267,7 @@ i915_gem_get_gtt_alignment(struct drm_device *dev, uint32_t size,
static int i915_gem_object_create_mmap_offset(struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
int ret;
dev_priv->mm.shrinker_no_lock_stealing = true;
@@ -2155,14 +2401,15 @@ i915_gem_object_invalidate(struct drm_i915_gem_object *obj)
if (obj->base.filp == NULL)
return;
- mapping = file_inode(obj->base.filp)->i_mapping,
+ mapping = obj->base.filp->f_mapping,
invalidate_mapping_pages(mapping, 0, (loff_t)-1);
}
static void
i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj)
{
- struct sg_page_iter sg_iter;
+ struct sgt_iter sgt_iter;
+ struct page *page;
int ret;
BUG_ON(obj->madv == __I915_MADV_PURGED);
@@ -2184,9 +2431,7 @@ i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj)
if (obj->madv == I915_MADV_DONTNEED)
obj->dirty = 0;
- for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) {
- struct page *page = sg_page_iter_page(&sg_iter);
-
+ for_each_sgt_page(page, sgt_iter, obj->pages) {
if (obj->dirty)
set_page_dirty(page);
@@ -2238,12 +2483,12 @@ i915_gem_object_put_pages(struct drm_i915_gem_object *obj)
static int
i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
int page_count, i;
struct address_space *mapping;
struct sg_table *st;
struct scatterlist *sg;
- struct sg_page_iter sg_iter;
+ struct sgt_iter sgt_iter;
struct page *page;
unsigned long last_pfn = 0; /* suppress gcc warning */
int ret;
@@ -2271,7 +2516,7 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
*
* Fail silently without starting the shrinker
*/
- mapping = file_inode(obj->base.filp)->i_mapping;
+ mapping = obj->base.filp->f_mapping;
gfp = mapping_gfp_constraint(mapping, ~(__GFP_IO | __GFP_RECLAIM));
gfp |= __GFP_NORETRY | __GFP_NOWARN;
sg = st->sgl;
@@ -2340,8 +2585,8 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
err_pages:
sg_mark_end(sg);
- for_each_sg_page(st->sgl, &sg_iter, st->nents, 0)
- put_page(sg_page_iter_page(&sg_iter));
+ for_each_sgt_page(page, sgt_iter, st)
+ put_page(page);
sg_free_table(st);
kfree(st);
@@ -2369,7 +2614,7 @@ err_pages:
int
i915_gem_object_get_pages(struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
const struct drm_i915_gem_object_ops *ops = obj->ops;
int ret;
@@ -2395,6 +2640,44 @@ i915_gem_object_get_pages(struct drm_i915_gem_object *obj)
return 0;
}
+/* The 'mapping' part of i915_gem_object_pin_map() below */
+static void *i915_gem_object_map(const struct drm_i915_gem_object *obj)
+{
+ unsigned long n_pages = obj->base.size >> PAGE_SHIFT;
+ struct sg_table *sgt = obj->pages;
+ struct sgt_iter sgt_iter;
+ struct page *page;
+ struct page *stack_pages[32];
+ struct page **pages = stack_pages;
+ unsigned long i = 0;
+ void *addr;
+
+ /* A single page can always be kmapped */
+ if (n_pages == 1)
+ return kmap(sg_page(sgt->sgl));
+
+ if (n_pages > ARRAY_SIZE(stack_pages)) {
+ /* Too big for stack -- allocate temporary array instead */
+ pages = drm_malloc_gfp(n_pages, sizeof(*pages), GFP_TEMPORARY);
+ if (!pages)
+ return NULL;
+ }
+
+ for_each_sgt_page(page, sgt_iter, sgt)
+ pages[i++] = page;
+
+ /* Check that we have the expected number of pages */
+ GEM_BUG_ON(i != n_pages);
+
+ addr = vmap(pages, n_pages, 0, PAGE_KERNEL);
+
+ if (pages != stack_pages)
+ drm_free_large(pages);
+
+ return addr;
+}
+
+/* get, pin, and map the pages of the object into kernel space */
void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj)
{
int ret;
@@ -2407,29 +2690,9 @@ void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj)
i915_gem_object_pin_pages(obj);
- if (obj->mapping == NULL) {
- struct page **pages;
-
- pages = NULL;
- if (obj->base.size == PAGE_SIZE)
- obj->mapping = kmap(sg_page(obj->pages->sgl));
- else
- pages = drm_malloc_gfp(obj->base.size >> PAGE_SHIFT,
- sizeof(*pages),
- GFP_TEMPORARY);
- if (pages != NULL) {
- struct sg_page_iter sg_iter;
- int n;
-
- n = 0;
- for_each_sg_page(obj->pages->sgl, &sg_iter,
- obj->pages->nents, 0)
- pages[n++] = sg_page_iter_page(&sg_iter);
-
- obj->mapping = vmap(pages, n, 0, PAGE_KERNEL);
- drm_free_large(pages);
- }
- if (obj->mapping == NULL) {
+ if (!obj->mapping) {
+ obj->mapping = i915_gem_object_map(obj);
+ if (!obj->mapping) {
i915_gem_object_unpin_pages(obj);
return ERR_PTR(-ENOMEM);
}
@@ -2502,9 +2765,8 @@ i915_gem_object_retire__read(struct drm_i915_gem_object *obj, int ring)
}
static int
-i915_gem_init_seqno(struct drm_device *dev, u32 seqno)
+i915_gem_init_seqno(struct drm_i915_private *dev_priv, u32 seqno)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_engine_cs *engine;
int ret;
@@ -2514,7 +2776,14 @@ i915_gem_init_seqno(struct drm_device *dev, u32 seqno)
if (ret)
return ret;
}
- i915_gem_retire_requests(dev);
+ i915_gem_retire_requests(dev_priv);
+
+ /* If the seqno wraps around, we need to clear the breadcrumb rbtree */
+ if (!i915_seqno_passed(seqno, dev_priv->next_seqno)) {
+ while (intel_kick_waiters(dev_priv) ||
+ intel_kick_signalers(dev_priv))
+ yield();
+ }
/* Finally reset hw state */
for_each_engine(engine, dev_priv)
@@ -2525,7 +2794,7 @@ i915_gem_init_seqno(struct drm_device *dev, u32 seqno)
int i915_gem_set_seqno(struct drm_device *dev, u32 seqno)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
int ret;
if (seqno == 0)
@@ -2534,7 +2803,7 @@ int i915_gem_set_seqno(struct drm_device *dev, u32 seqno)
/* HWS page needs to be set less than what we
* will inject to ring
*/
- ret = i915_gem_init_seqno(dev, seqno - 1);
+ ret = i915_gem_init_seqno(dev_priv, seqno - 1);
if (ret)
return ret;
@@ -2550,13 +2819,11 @@ int i915_gem_set_seqno(struct drm_device *dev, u32 seqno)
}
int
-i915_gem_get_seqno(struct drm_device *dev, u32 *seqno)
+i915_gem_get_seqno(struct drm_i915_private *dev_priv, u32 *seqno)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
/* reserve 0 for non-seqno */
if (dev_priv->next_seqno == 0) {
- int ret = i915_gem_init_seqno(dev, 0);
+ int ret = i915_gem_init_seqno(dev_priv, 0);
if (ret)
return ret;
@@ -2567,6 +2834,26 @@ i915_gem_get_seqno(struct drm_device *dev, u32 *seqno)
return 0;
}
+static void i915_gem_mark_busy(const struct intel_engine_cs *engine)
+{
+ struct drm_i915_private *dev_priv = engine->i915;
+
+ dev_priv->gt.active_engines |= intel_engine_flag(engine);
+ if (dev_priv->gt.awake)
+ return;
+
+ intel_runtime_pm_get_noresume(dev_priv);
+ dev_priv->gt.awake = true;
+
+ i915_update_gfx_val(dev_priv);
+ if (INTEL_GEN(dev_priv) >= 6)
+ gen6_rps_busy(dev_priv);
+
+ queue_delayed_work(dev_priv->wq,
+ &dev_priv->gt.retire_work,
+ round_jiffies_up_relative(HZ));
+}
+
/*
* NB: This function is not allowed to fail. Doing so would mean the the
* request is not being tracked for completion but the work itself is
@@ -2577,16 +2864,15 @@ void __i915_add_request(struct drm_i915_gem_request *request,
bool flush_caches)
{
struct intel_engine_cs *engine;
- struct drm_i915_private *dev_priv;
struct intel_ringbuffer *ringbuf;
u32 request_start;
+ u32 reserved_tail;
int ret;
if (WARN_ON(request == NULL))
return;
engine = request->engine;
- dev_priv = request->i915;
ringbuf = request->ringbuf;
/*
@@ -2594,9 +2880,10 @@ void __i915_add_request(struct drm_i915_gem_request *request,
* should already have been reserved in the ring buffer. Let the ring
* know that it is time to use that space up.
*/
- intel_ring_reserved_space_use(ringbuf);
-
request_start = intel_ring_get_tail(ringbuf);
+ reserved_tail = request->reserved_space;
+ request->reserved_space = 0;
+
/*
* Emit any outstanding flushes - execbuf can fail to emit the flush
* after having emitted the batchbuffer command. Hence we need to fix
@@ -2651,56 +2938,42 @@ void __i915_add_request(struct drm_i915_gem_request *request,
}
/* Not allowed to fail! */
WARN(ret, "emit|add_request failed: %d!\n", ret);
-
- i915_queue_hangcheck(engine->dev);
-
- queue_delayed_work(dev_priv->wq,
- &dev_priv->mm.retire_work,
- round_jiffies_up_relative(HZ));
- intel_mark_busy(dev_priv->dev);
-
/* Sanity check that the reserved size was large enough. */
- intel_ring_reserved_space_end(ringbuf);
+ ret = intel_ring_get_tail(ringbuf) - request_start;
+ if (ret < 0)
+ ret += ringbuf->size;
+ WARN_ONCE(ret > reserved_tail,
+ "Not enough space reserved (%d bytes) "
+ "for adding the request (%d bytes)\n",
+ reserved_tail, ret);
+
+ i915_gem_mark_busy(engine);
}
-static bool i915_context_is_banned(struct drm_i915_private *dev_priv,
- const struct intel_context *ctx)
+static bool i915_context_is_banned(const struct i915_gem_context *ctx)
{
unsigned long elapsed;
- elapsed = get_seconds() - ctx->hang_stats.guilty_ts;
-
if (ctx->hang_stats.banned)
return true;
+ elapsed = get_seconds() - ctx->hang_stats.guilty_ts;
if (ctx->hang_stats.ban_period_seconds &&
elapsed <= ctx->hang_stats.ban_period_seconds) {
- if (!i915_gem_context_is_default(ctx)) {
- DRM_DEBUG("context hanging too fast, banning!\n");
- return true;
- } else if (i915_stop_ring_allow_ban(dev_priv)) {
- if (i915_stop_ring_allow_warn(dev_priv))
- DRM_ERROR("gpu hanging too fast, banning!\n");
- return true;
- }
+ DRM_DEBUG("context hanging too fast, banning!\n");
+ return true;
}
return false;
}
-static void i915_set_reset_status(struct drm_i915_private *dev_priv,
- struct intel_context *ctx,
+static void i915_set_reset_status(struct i915_gem_context *ctx,
const bool guilty)
{
- struct i915_ctx_hang_stats *hs;
-
- if (WARN_ON(!ctx))
- return;
-
- hs = &ctx->hang_stats;
+ struct i915_ctx_hang_stats *hs = &ctx->hang_stats;
if (guilty) {
- hs->banned = i915_context_is_banned(dev_priv, ctx);
+ hs->banned = i915_context_is_banned(ctx);
hs->batch_active++;
hs->guilty_ts = get_seconds();
} else {
@@ -2712,27 +2985,15 @@ void i915_gem_request_free(struct kref *req_ref)
{
struct drm_i915_gem_request *req = container_of(req_ref,
typeof(*req), ref);
- struct intel_context *ctx = req->ctx;
-
- if (req->file_priv)
- i915_gem_request_remove_from_client(req);
-
- if (ctx) {
- if (i915.enable_execlists && ctx != req->i915->kernel_context)
- intel_lr_context_unpin(ctx, req->engine);
-
- i915_gem_context_unreference(ctx);
- }
-
kmem_cache_free(req->i915->requests, req);
}
static inline int
__i915_gem_request_alloc(struct intel_engine_cs *engine,
- struct intel_context *ctx,
+ struct i915_gem_context *ctx,
struct drm_i915_gem_request **req_out)
{
- struct drm_i915_private *dev_priv = to_i915(engine->dev);
+ struct drm_i915_private *dev_priv = engine->i915;
unsigned reset_counter = i915_reset_counter(&dev_priv->gpu_error);
struct drm_i915_gem_request *req;
int ret;
@@ -2754,26 +3015,16 @@ __i915_gem_request_alloc(struct intel_engine_cs *engine,
if (req == NULL)
return -ENOMEM;
- ret = i915_gem_get_seqno(engine->dev, &req->seqno);
+ ret = i915_gem_get_seqno(engine->i915, &req->seqno);
if (ret)
goto err;
kref_init(&req->ref);
req->i915 = dev_priv;
req->engine = engine;
- req->reset_counter = reset_counter;
req->ctx = ctx;
i915_gem_context_reference(req->ctx);
- if (i915.enable_execlists)
- ret = intel_logical_ring_alloc_request_extras(req);
- else
- ret = intel_ring_alloc_request_extras(req);
- if (ret) {
- i915_gem_context_unreference(req->ctx);
- goto err;
- }
-
/*
* Reserve space in the ring buffer for all the commands required to
* eventually emit this request. This is to guarantee that the
@@ -2781,24 +3032,20 @@ __i915_gem_request_alloc(struct intel_engine_cs *engine,
* to be redone if the request is not actually submitted straight
* away, e.g. because a GPU scheduler has deferred it.
*/
+ req->reserved_space = MIN_SPACE_FOR_ADD_REQUEST;
+
if (i915.enable_execlists)
- ret = intel_logical_ring_reserve_space(req);
+ ret = intel_logical_ring_alloc_request_extras(req);
else
- ret = intel_ring_reserve_space(req);
- if (ret) {
- /*
- * At this point, the request is fully allocated even if not
- * fully prepared. Thus it can be cleaned up using the proper
- * free code.
- */
- intel_ring_reserved_space_cancel(req->ringbuf);
- i915_gem_request_unreference(req);
- return ret;
- }
+ ret = intel_ring_alloc_request_extras(req);
+ if (ret)
+ goto err_ctx;
*req_out = req;
return 0;
+err_ctx:
+ i915_gem_context_unreference(ctx);
err:
kmem_cache_free(dev_priv->requests, req);
return ret;
@@ -2818,13 +3065,13 @@ err:
*/
struct drm_i915_gem_request *
i915_gem_request_alloc(struct intel_engine_cs *engine,
- struct intel_context *ctx)
+ struct i915_gem_context *ctx)
{
struct drm_i915_gem_request *req;
int err;
if (ctx == NULL)
- ctx = to_i915(engine->dev)->kernel_context;
+ ctx = engine->i915->kernel_context;
err = __i915_gem_request_alloc(engine, ctx, &req);
return err ? ERR_PTR(err) : req;
}
@@ -2834,8 +3081,16 @@ i915_gem_find_active_request(struct intel_engine_cs *engine)
{
struct drm_i915_gem_request *request;
+ /* We are called by the error capture and reset at a random
+ * point in time. In particular, note that neither is crucially
+ * ordered with an interrupt. After a hang, the GPU is dead and we
+ * assume that no more writes can happen (we waited long enough for
+ * all writes that were in transaction to be flushed) - adding an
+ * extra delay for a recent interrupt is pointless. Hence, we do
+ * not need an engine->irq_seqno_barrier() before the seqno reads.
+ */
list_for_each_entry(request, &engine->request_list, list) {
- if (i915_gem_request_completed(request, false))
+ if (i915_gem_request_completed(request))
continue;
return request;
@@ -2844,27 +3099,23 @@ i915_gem_find_active_request(struct intel_engine_cs *engine)
return NULL;
}
-static void i915_gem_reset_engine_status(struct drm_i915_private *dev_priv,
- struct intel_engine_cs *engine)
+static void i915_gem_reset_engine_status(struct intel_engine_cs *engine)
{
struct drm_i915_gem_request *request;
bool ring_hung;
request = i915_gem_find_active_request(engine);
-
if (request == NULL)
return;
ring_hung = engine->hangcheck.score >= HANGCHECK_SCORE_RING_HUNG;
- i915_set_reset_status(dev_priv, request->ctx, ring_hung);
-
+ i915_set_reset_status(request->ctx, ring_hung);
list_for_each_entry_continue(request, &engine->request_list, list)
- i915_set_reset_status(dev_priv, request->ctx, false);
+ i915_set_reset_status(request->ctx, false);
}
-static void i915_gem_reset_engine_cleanup(struct drm_i915_private *dev_priv,
- struct intel_engine_cs *engine)
+static void i915_gem_reset_engine_cleanup(struct intel_engine_cs *engine)
{
struct intel_ringbuffer *buffer;
@@ -2888,13 +3139,7 @@ static void i915_gem_reset_engine_cleanup(struct drm_i915_private *dev_priv,
/* Ensure irq handler finishes or is cancelled. */
tasklet_kill(&engine->irq_tasklet);
- spin_lock_bh(&engine->execlist_lock);
- /* list_splice_tail_init checks for empty lists */
- list_splice_tail_init(&engine->execlist_queue,
- &engine->execlist_retired_req_list);
- spin_unlock_bh(&engine->execlist_lock);
-
- intel_execlists_retire_requests(engine);
+ intel_execlists_cancel_requests(engine);
}
/*
@@ -2927,11 +3172,13 @@ static void i915_gem_reset_engine_cleanup(struct drm_i915_private *dev_priv,
}
intel_ring_init_seqno(engine, engine->last_submitted_seqno);
+
+ engine->i915->gt.active_engines &= ~intel_engine_flag(engine);
}
void i915_gem_reset(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_engine_cs *engine;
/*
@@ -2940,10 +3187,11 @@ void i915_gem_reset(struct drm_device *dev)
* their reference to the objects, the inspection must be done first.
*/
for_each_engine(engine, dev_priv)
- i915_gem_reset_engine_status(dev_priv, engine);
+ i915_gem_reset_engine_status(engine);
for_each_engine(engine, dev_priv)
- i915_gem_reset_engine_cleanup(dev_priv, engine);
+ i915_gem_reset_engine_cleanup(engine);
+ mod_delayed_work(dev_priv->wq, &dev_priv->gt.idle_work, 0);
i915_gem_context_reset(dev);
@@ -2954,6 +3202,7 @@ void i915_gem_reset(struct drm_device *dev)
/**
* This function clears the request list as sequence numbers are passed.
+ * @engine: engine to retire requests on
*/
void
i915_gem_retire_requests_ring(struct intel_engine_cs *engine)
@@ -2972,7 +3221,7 @@ i915_gem_retire_requests_ring(struct intel_engine_cs *engine)
struct drm_i915_gem_request,
list);
- if (!i915_gem_request_completed(request, true))
+ if (!i915_gem_request_completed(request))
break;
i915_gem_request_retire(request);
@@ -2995,58 +3244,52 @@ i915_gem_retire_requests_ring(struct intel_engine_cs *engine)
i915_gem_object_retire__read(obj, engine->id);
}
- if (unlikely(engine->trace_irq_req &&
- i915_gem_request_completed(engine->trace_irq_req, true))) {
- engine->irq_put(engine);
- i915_gem_request_assign(&engine->trace_irq_req, NULL);
- }
-
WARN_ON(i915_verify_lists(engine->dev));
}
-bool
-i915_gem_retire_requests(struct drm_device *dev)
+void i915_gem_retire_requests(struct drm_i915_private *dev_priv)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_engine_cs *engine;
- bool idle = true;
+
+ lockdep_assert_held(&dev_priv->drm.struct_mutex);
+
+ if (dev_priv->gt.active_engines == 0)
+ return;
+
+ GEM_BUG_ON(!dev_priv->gt.awake);
for_each_engine(engine, dev_priv) {
i915_gem_retire_requests_ring(engine);
- idle &= list_empty(&engine->request_list);
- if (i915.enable_execlists) {
- spin_lock_bh(&engine->execlist_lock);
- idle &= list_empty(&engine->execlist_queue);
- spin_unlock_bh(&engine->execlist_lock);
-
- intel_execlists_retire_requests(engine);
- }
+ if (list_empty(&engine->request_list))
+ dev_priv->gt.active_engines &= ~intel_engine_flag(engine);
}
- if (idle)
- mod_delayed_work(dev_priv->wq,
- &dev_priv->mm.idle_work,
+ if (dev_priv->gt.active_engines == 0)
+ queue_delayed_work(dev_priv->wq,
+ &dev_priv->gt.idle_work,
msecs_to_jiffies(100));
-
- return idle;
}
static void
i915_gem_retire_work_handler(struct work_struct *work)
{
struct drm_i915_private *dev_priv =
- container_of(work, typeof(*dev_priv), mm.retire_work.work);
- struct drm_device *dev = dev_priv->dev;
- bool idle;
+ container_of(work, typeof(*dev_priv), gt.retire_work.work);
+ struct drm_device *dev = &dev_priv->drm;
/* Come back later if the device is busy... */
- idle = false;
if (mutex_trylock(&dev->struct_mutex)) {
- idle = i915_gem_retire_requests(dev);
+ i915_gem_retire_requests(dev_priv);
mutex_unlock(&dev->struct_mutex);
}
- if (!idle)
- queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work,
+
+ /* Keep the retire handler running until we are finally idle.
+ * We do not need to do this test under locking as in the worst-case
+ * we queue the retire worker once too often.
+ */
+ if (READ_ONCE(dev_priv->gt.awake))
+ queue_delayed_work(dev_priv->wq,
+ &dev_priv->gt.retire_work,
round_jiffies_up_relative(HZ));
}
@@ -3054,25 +3297,55 @@ static void
i915_gem_idle_work_handler(struct work_struct *work)
{
struct drm_i915_private *dev_priv =
- container_of(work, typeof(*dev_priv), mm.idle_work.work);
- struct drm_device *dev = dev_priv->dev;
+ container_of(work, typeof(*dev_priv), gt.idle_work.work);
+ struct drm_device *dev = &dev_priv->drm;
struct intel_engine_cs *engine;
+ unsigned int stuck_engines;
+ bool rearm_hangcheck;
+
+ if (!READ_ONCE(dev_priv->gt.awake))
+ return;
+
+ if (READ_ONCE(dev_priv->gt.active_engines))
+ return;
+
+ rearm_hangcheck =
+ cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work);
+
+ if (!mutex_trylock(&dev->struct_mutex)) {
+ /* Currently busy, come back later */
+ mod_delayed_work(dev_priv->wq,
+ &dev_priv->gt.idle_work,
+ msecs_to_jiffies(50));
+ goto out_rearm;
+ }
+
+ if (dev_priv->gt.active_engines)
+ goto out_unlock;
for_each_engine(engine, dev_priv)
- if (!list_empty(&engine->request_list))
- return;
+ i915_gem_batch_pool_fini(&engine->batch_pool);
- /* we probably should sync with hangcheck here, using cancel_work_sync.
- * Also locking seems to be fubar here, engine->request_list is protected
- * by dev->struct_mutex. */
+ GEM_BUG_ON(!dev_priv->gt.awake);
+ dev_priv->gt.awake = false;
+ rearm_hangcheck = false;
- intel_mark_idle(dev);
+ stuck_engines = intel_kick_waiters(dev_priv);
+ if (unlikely(stuck_engines)) {
+ DRM_DEBUG_DRIVER("kicked stuck waiters...missed irq\n");
+ dev_priv->gpu_error.missed_irq_rings |= stuck_engines;
+ }
- if (mutex_trylock(&dev->struct_mutex)) {
- for_each_engine(engine, dev_priv)
- i915_gem_batch_pool_fini(&engine->batch_pool);
+ if (INTEL_GEN(dev_priv) >= 6)
+ gen6_rps_idle(dev_priv);
+ intel_runtime_pm_put(dev_priv);
+out_unlock:
+ mutex_unlock(&dev->struct_mutex);
- mutex_unlock(&dev->struct_mutex);
+out_rearm:
+ if (rearm_hangcheck) {
+ GEM_BUG_ON(!dev_priv->gt.awake);
+ i915_queue_hangcheck(dev_priv);
}
}
@@ -3080,6 +3353,7 @@ i915_gem_idle_work_handler(struct work_struct *work)
* Ensures that an object will eventually get non-busy by flushing any required
* write domains, emitting any outstanding lazy request and retiring and
* completed requests.
+ * @obj: object to flush
*/
static int
i915_gem_object_flush_active(struct drm_i915_gem_object *obj)
@@ -3096,14 +3370,8 @@ i915_gem_object_flush_active(struct drm_i915_gem_object *obj)
if (req == NULL)
continue;
- if (list_empty(&req->list))
- goto retire;
-
- if (i915_gem_request_completed(req, true)) {
- __i915_gem_request_retire__upto(req);
-retire:
+ if (i915_gem_request_completed(req))
i915_gem_object_retire__read(obj, i);
- }
}
return 0;
@@ -3111,7 +3379,9 @@ retire:
/**
* i915_gem_wait_ioctl - implements DRM_IOCTL_I915_GEM_WAIT
- * @DRM_IOCTL_ARGS: standard ioctl arguments
+ * @dev: drm device pointer
+ * @data: ioctl data blob
+ * @file: drm file pointer
*
* Returns 0 if successful, else an error is returned with the remaining time in
* the timeout parameter.
@@ -3185,7 +3455,7 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
ret = __i915_wait_request(req[i], true,
args->timeout_ns > 0 ? &args->timeout_ns : NULL,
to_rps_client(file));
- i915_gem_request_unreference__unlocked(req[i]);
+ i915_gem_request_unreference(req[i]);
}
return ret;
@@ -3208,10 +3478,10 @@ __i915_gem_object_sync(struct drm_i915_gem_object *obj,
if (to == from)
return 0;
- if (i915_gem_request_completed(from_req, true))
+ if (i915_gem_request_completed(from_req))
return 0;
- if (!i915_semaphore_is_enabled(obj->base.dev)) {
+ if (!i915_semaphore_is_enabled(to_i915(obj->base.dev))) {
struct drm_i915_private *i915 = to_i915(obj->base.dev);
ret = __i915_wait_request(from_req,
i915->mm.interruptible,
@@ -3345,10 +3615,21 @@ static void i915_gem_object_finish_gtt(struct drm_i915_gem_object *obj)
old_write_domain);
}
+static void __i915_vma_iounmap(struct i915_vma *vma)
+{
+ GEM_BUG_ON(vma->pin_count);
+
+ if (vma->iomap == NULL)
+ return;
+
+ io_mapping_unmap(vma->iomap);
+ vma->iomap = NULL;
+}
+
static int __i915_vma_unbind(struct i915_vma *vma, bool wait)
{
struct drm_i915_gem_object *obj = vma->obj;
- struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
int ret;
if (list_empty(&vma->obj_link))
@@ -3377,6 +3658,8 @@ static int __i915_vma_unbind(struct i915_vma *vma, bool wait)
ret = i915_gem_object_put_fence(obj);
if (ret)
return ret;
+
+ __i915_vma_iounmap(vma);
}
trace_i915_vma_unbind(vma);
@@ -3422,26 +3705,16 @@ int __i915_vma_unbind_no_wait(struct i915_vma *vma)
return __i915_vma_unbind(vma, false);
}
-int i915_gpu_idle(struct drm_device *dev)
+int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_engine_cs *engine;
int ret;
- /* Flush everything onto the inactive list. */
- for_each_engine(engine, dev_priv) {
- if (!i915.enable_execlists) {
- struct drm_i915_gem_request *req;
+ lockdep_assert_held(&dev_priv->drm.struct_mutex);
- req = i915_gem_request_alloc(engine, NULL);
- if (IS_ERR(req))
- return PTR_ERR(req);
-
- ret = i915_switch_context(req);
- i915_add_request_no_flush(req);
- if (ret)
- return ret;
- }
+ for_each_engine(engine, dev_priv) {
+ if (engine->last_context == NULL)
+ continue;
ret = intel_engine_idle(engine);
if (ret)
@@ -3488,6 +3761,11 @@ static bool i915_gem_valid_gtt_space(struct i915_vma *vma,
/**
* Finds free space in the GTT aperture and binds the object or a view of it
* there.
+ * @obj: object to bind
+ * @vm: address space to bind into
+ * @ggtt_view: global gtt view if applicable
+ * @alignment: requested alignment
+ * @flags: mask of PIN_* flags to use
*/
static struct i915_vma *
i915_gem_object_bind_to_vm(struct drm_i915_gem_object *obj,
@@ -3731,7 +4009,7 @@ i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj)
return;
if (i915_gem_clflush_object(obj, obj->pin_display))
- i915_gem_chipset_flush(obj->base.dev);
+ i915_gem_chipset_flush(to_i915(obj->base.dev));
old_write_domain = obj->base.write_domain;
obj->base.write_domain = 0;
@@ -3745,6 +4023,8 @@ i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj)
/**
* Moves a single object to the GTT read, and possibly write domain.
+ * @obj: object to act on
+ * @write: ask for write access or read only
*
* This function returns when the move is complete, including waiting on
* flushes to occur.
@@ -3816,6 +4096,8 @@ i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write)
/**
* Changes the cache-level of an object across all VMA.
+ * @obj: object to act on
+ * @cache_level: new cache level to set for the object
*
* After this function returns, the object will be in the new cache-level
* across all GTT and the contents of the backing storage will be coherent,
@@ -3925,11 +4207,9 @@ out:
* object is now coherent at its new cache level (with respect
* to the access domain).
*/
- if (obj->cache_dirty &&
- obj->base.write_domain != I915_GEM_DOMAIN_CPU &&
- cpu_write_needs_clflush(obj)) {
+ if (obj->cache_dirty && cpu_write_needs_clflush(obj)) {
if (i915_gem_clflush_object(obj, true))
- i915_gem_chipset_flush(obj->base.dev);
+ i915_gem_chipset_flush(to_i915(obj->base.dev));
}
return 0;
@@ -3967,7 +4247,7 @@ int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data,
int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_caching *args = data;
struct drm_i915_gem_object *obj;
enum i915_cache_level level;
@@ -4097,6 +4377,8 @@ i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj,
/**
* Moves a single object to the CPU read, and possibly write domain.
+ * @obj: object to act on
+ * @write: requesting write or read-only access
*
* This function returns when the move is complete, including waiting on
* flushes to occur.
@@ -4159,7 +4441,7 @@ i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write)
static int
i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_file_private *file_priv = file->driver_priv;
unsigned long recent_enough = jiffies - DRM_I915_THROTTLE_JIFFIES;
struct drm_i915_gem_request *request, *target = NULL;
@@ -4195,10 +4477,7 @@ i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file)
return 0;
ret = __i915_wait_request(target, true, NULL, NULL);
- if (ret == 0)
- queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0);
-
- i915_gem_request_unreference__unlocked(target);
+ i915_gem_request_unreference(target);
return ret;
}
@@ -4256,7 +4535,7 @@ i915_gem_object_do_pin(struct drm_i915_gem_object *obj,
uint32_t alignment,
uint64_t flags)
{
- struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
struct i915_vma *vma;
unsigned bound;
int ret;
@@ -4420,7 +4699,7 @@ int
i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_madvise *args = data;
struct drm_i915_gem_object *obj;
int ret;
@@ -4490,7 +4769,7 @@ void i915_gem_object_init(struct drm_i915_gem_object *obj,
obj->fence_reg = I915_FENCE_REG_NONE;
obj->madv = I915_MADV_WILLNEED;
- i915_gem_info_add_obj(obj->base.dev->dev_private, obj->base.size);
+ i915_gem_info_add_obj(to_i915(obj->base.dev), obj->base.size);
}
static const struct drm_i915_gem_object_ops i915_gem_object_ops = {
@@ -4499,21 +4778,21 @@ static const struct drm_i915_gem_object_ops i915_gem_object_ops = {
.put_pages = i915_gem_object_put_pages_gtt,
};
-struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
+struct drm_i915_gem_object *i915_gem_object_create(struct drm_device *dev,
size_t size)
{
struct drm_i915_gem_object *obj;
struct address_space *mapping;
gfp_t mask;
+ int ret;
obj = i915_gem_object_alloc(dev);
if (obj == NULL)
- return NULL;
+ return ERR_PTR(-ENOMEM);
- if (drm_gem_object_init(dev, &obj->base, size) != 0) {
- i915_gem_object_free(obj);
- return NULL;
- }
+ ret = drm_gem_object_init(dev, &obj->base, size);
+ if (ret)
+ goto fail;
mask = GFP_HIGHUSER | __GFP_RECLAIMABLE;
if (IS_CRESTLINE(dev) || IS_BROADWATER(dev)) {
@@ -4522,7 +4801,7 @@ struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
mask |= __GFP_DMA32;
}
- mapping = file_inode(obj->base.filp)->i_mapping;
+ mapping = obj->base.filp->f_mapping;
mapping_set_gfp_mask(mapping, mask);
i915_gem_object_init(obj, &i915_gem_object_ops);
@@ -4550,6 +4829,11 @@ struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
trace_i915_gem_object_create(obj);
return obj;
+
+fail:
+ i915_gem_object_free(obj);
+
+ return ERR_PTR(ret);
}
static bool discard_backing_storage(struct drm_i915_gem_object *obj)
@@ -4580,7 +4864,7 @@ void i915_gem_free_object(struct drm_gem_object *gem_obj)
{
struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
struct drm_device *dev = obj->base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct i915_vma *vma, *next;
intel_runtime_pm_get(dev_priv);
@@ -4655,16 +4939,12 @@ struct i915_vma *i915_gem_obj_to_vma(struct drm_i915_gem_object *obj,
struct i915_vma *i915_gem_obj_to_ggtt_view(struct drm_i915_gem_object *obj,
const struct i915_ggtt_view *view)
{
- struct drm_device *dev = obj->base.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct i915_vma *vma;
- BUG_ON(!view);
+ GEM_BUG_ON(!view);
list_for_each_entry(vma, &obj->vma_list, obj_link)
- if (vma->vm == &ggtt->base &&
- i915_ggtt_view_equal(&vma->ggtt_view, view))
+ if (vma->is_ggtt && i915_ggtt_view_equal(&vma->ggtt_view, view))
return vma;
return NULL;
}
@@ -4688,7 +4968,7 @@ void i915_gem_vma_destroy(struct i915_vma *vma)
static void
i915_gem_stop_engines(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_engine_cs *engine;
for_each_engine(engine, dev_priv)
@@ -4698,27 +4978,28 @@ i915_gem_stop_engines(struct drm_device *dev)
int
i915_gem_suspend(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
int ret = 0;
mutex_lock(&dev->struct_mutex);
- ret = i915_gpu_idle(dev);
+ ret = i915_gem_wait_for_idle(dev_priv);
if (ret)
goto err;
- i915_gem_retire_requests(dev);
+ i915_gem_retire_requests(dev_priv);
i915_gem_stop_engines(dev);
+ i915_gem_context_lost(dev_priv);
mutex_unlock(&dev->struct_mutex);
cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work);
- cancel_delayed_work_sync(&dev_priv->mm.retire_work);
- flush_delayed_work(&dev_priv->mm.idle_work);
+ cancel_delayed_work_sync(&dev_priv->gt.retire_work);
+ flush_delayed_work(&dev_priv->gt.idle_work);
/* Assert that we sucessfully flushed all the work and
* reset the GPU back to its idle, low power state.
*/
- WARN_ON(dev_priv->mm.busy);
+ WARN_ON(dev_priv->gt.awake);
return 0;
@@ -4727,40 +5008,9 @@ err:
return ret;
}
-int i915_gem_l3_remap(struct drm_i915_gem_request *req, int slice)
-{
- struct intel_engine_cs *engine = req->engine;
- struct drm_device *dev = engine->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 *remap_info = dev_priv->l3_parity.remap_info[slice];
- int i, ret;
-
- if (!HAS_L3_DPF(dev) || !remap_info)
- return 0;
-
- ret = intel_ring_begin(req, GEN7_L3LOG_SIZE / 4 * 3);
- if (ret)
- return ret;
-
- /*
- * Note: We do not worry about the concurrent register cacheline hang
- * here because no other code should access these registers other than
- * at initialization time.
- */
- for (i = 0; i < GEN7_L3LOG_SIZE / 4; i++) {
- intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(1));
- intel_ring_emit_reg(engine, GEN7_L3LOG(slice, i));
- intel_ring_emit(engine, remap_info[i]);
- }
-
- intel_ring_advance(engine);
-
- return ret;
-}
-
void i915_gem_init_swizzling(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
if (INTEL_INFO(dev)->gen < 5 ||
dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_NONE)
@@ -4785,7 +5035,7 @@ void i915_gem_init_swizzling(struct drm_device *dev)
static void init_unused_ring(struct drm_device *dev, u32 base)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
I915_WRITE(RING_CTL(base), 0);
I915_WRITE(RING_HEAD(base), 0);
@@ -4812,7 +5062,7 @@ static void init_unused_rings(struct drm_device *dev)
int i915_gem_init_engines(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
int ret;
ret = intel_init_render_ring_buffer(dev);
@@ -4860,9 +5110,9 @@ cleanup_render_ring:
int
i915_gem_init_hw(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_engine_cs *engine;
- int ret, j;
+ int ret;
/* Double layer security blanket, see i915_gem_init() */
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
@@ -4914,59 +5164,10 @@ i915_gem_init_hw(struct drm_device *dev)
intel_mocs_init_l3cc_table(dev);
/* We can't enable contexts until all firmware is loaded */
- if (HAS_GUC_UCODE(dev)) {
- ret = intel_guc_ucode_load(dev);
- if (ret) {
- DRM_ERROR("Failed to initialize GuC, error %d\n", ret);
- ret = -EIO;
- goto out;
- }
- }
-
- /*
- * Increment the next seqno by 0x100 so we have a visible break
- * on re-initialisation
- */
- ret = i915_gem_set_seqno(dev, dev_priv->next_seqno+0x100);
+ ret = intel_guc_setup(dev);
if (ret)
goto out;
- /* Now it is safe to go back round and do everything else: */
- for_each_engine(engine, dev_priv) {
- struct drm_i915_gem_request *req;
-
- req = i915_gem_request_alloc(engine, NULL);
- if (IS_ERR(req)) {
- ret = PTR_ERR(req);
- break;
- }
-
- if (engine->id == RCS) {
- for (j = 0; j < NUM_L3_SLICES(dev); j++) {
- ret = i915_gem_l3_remap(req, j);
- if (ret)
- goto err_request;
- }
- }
-
- ret = i915_ppgtt_init_ring(req);
- if (ret)
- goto err_request;
-
- ret = i915_gem_context_enable(req);
- if (ret)
- goto err_request;
-
-err_request:
- i915_add_request_no_flush(req);
- if (ret) {
- DRM_ERROR("Failed to enable %s, error=%d\n",
- engine->name, ret);
- i915_gem_cleanup_engines(dev);
- break;
- }
- }
-
out:
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
return ret;
@@ -4974,12 +5175,9 @@ out:
int i915_gem_init(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
int ret;
- i915.enable_execlists = intel_sanitize_enable_execlists(dev,
- i915.enable_execlists);
-
mutex_lock(&dev->struct_mutex);
if (!i915.enable_execlists) {
@@ -5002,10 +5200,7 @@ int i915_gem_init(struct drm_device *dev)
*/
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
- ret = i915_gem_init_userptr(dev);
- if (ret)
- goto out_unlock;
-
+ i915_gem_init_userptr(dev_priv);
i915_gem_init_ggtt(dev);
ret = i915_gem_context_init(dev);
@@ -5037,19 +5232,11 @@ out_unlock:
void
i915_gem_cleanup_engines(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_engine_cs *engine;
for_each_engine(engine, dev_priv)
dev_priv->gt.cleanup_engine(engine);
-
- if (i915.enable_execlists)
- /*
- * 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.
- */
- intel_gpu_reset(dev, ALL_ENGINES);
}
static void
@@ -5062,7 +5249,7 @@ init_engine_lists(struct intel_engine_cs *engine)
void
i915_gem_load_init_fences(struct drm_i915_private *dev_priv)
{
- struct drm_device *dev = dev_priv->dev;
+ struct drm_device *dev = &dev_priv->drm;
if (INTEL_INFO(dev_priv)->gen >= 7 && !IS_VALLEYVIEW(dev_priv) &&
!IS_CHERRYVIEW(dev_priv))
@@ -5073,7 +5260,7 @@ i915_gem_load_init_fences(struct drm_i915_private *dev_priv)
else
dev_priv->num_fence_regs = 8;
- if (intel_vgpu_active(dev))
+ if (intel_vgpu_active(dev_priv))
dev_priv->num_fence_regs =
I915_READ(vgtif_reg(avail_rs.fence_num));
@@ -5086,7 +5273,7 @@ i915_gem_load_init_fences(struct drm_i915_private *dev_priv)
void
i915_gem_load_init(struct drm_device *dev)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(dev);
int i;
dev_priv->objects =
@@ -5114,22 +5301,15 @@ i915_gem_load_init(struct drm_device *dev)
init_engine_lists(&dev_priv->engine[i]);
for (i = 0; i < I915_MAX_NUM_FENCES; i++)
INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list);
- INIT_DELAYED_WORK(&dev_priv->mm.retire_work,
+ INIT_DELAYED_WORK(&dev_priv->gt.retire_work,
i915_gem_retire_work_handler);
- INIT_DELAYED_WORK(&dev_priv->mm.idle_work,
+ INIT_DELAYED_WORK(&dev_priv->gt.idle_work,
i915_gem_idle_work_handler);
+ init_waitqueue_head(&dev_priv->gpu_error.wait_queue);
init_waitqueue_head(&dev_priv->gpu_error.reset_queue);
dev_priv->relative_constants_mode = I915_EXEC_CONSTANTS_REL_GENERAL;
- /*
- * Set initial sequence number for requests.
- * Using this number allows the wraparound to happen early,
- * catching any obvious problems.
- */
- dev_priv->next_seqno = ((u32)~0 - 0x1100);
- dev_priv->last_seqno = ((u32)~0 - 0x1101);
-
INIT_LIST_HEAD(&dev_priv->mm.fence_list);
init_waitqueue_head(&dev_priv->pending_flip_queue);
@@ -5148,6 +5328,34 @@ void i915_gem_load_cleanup(struct drm_device *dev)
kmem_cache_destroy(dev_priv->objects);
}
+int i915_gem_freeze_late(struct drm_i915_private *dev_priv)
+{
+ struct drm_i915_gem_object *obj;
+
+ /* Called just before we write the hibernation image.
+ *
+ * We need to update the domain tracking to reflect that the CPU
+ * will be accessing all the pages to create and restore from the
+ * hibernation, and so upon restoration those pages will be in the
+ * CPU domain.
+ *
+ * To make sure the hibernation image contains the latest state,
+ * we update that state just before writing out the image.
+ */
+
+ list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
+ obj->base.read_domains = I915_GEM_DOMAIN_CPU;
+ obj->base.write_domain = I915_GEM_DOMAIN_CPU;
+ }
+
+ list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
+ obj->base.read_domains = I915_GEM_DOMAIN_CPU;
+ obj->base.write_domain = I915_GEM_DOMAIN_CPU;
+ }
+
+ return 0;
+}
+
void i915_gem_release(struct drm_device *dev, struct drm_file *file)
{
struct drm_i915_file_private *file_priv = file->driver_priv;
@@ -5187,7 +5395,7 @@ int i915_gem_open(struct drm_device *dev, struct drm_file *file)
return -ENOMEM;
file->driver_priv = file_priv;
- file_priv->dev_priv = dev->dev_private;
+ file_priv->dev_priv = to_i915(dev);
file_priv->file = file;
INIT_LIST_HEAD(&file_priv->rps.link);
@@ -5233,7 +5441,7 @@ void i915_gem_track_fb(struct drm_i915_gem_object *old,
u64 i915_gem_obj_offset(struct drm_i915_gem_object *o,
struct i915_address_space *vm)
{
- struct drm_i915_private *dev_priv = o->base.dev->dev_private;
+ struct drm_i915_private *dev_priv = to_i915(o->base.dev);
struct i915_vma *vma;
WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base);
@@ -5254,13 +5462,10 @@ u64 i915_gem_obj_offset(struct drm_i915_gem_object *o,
u64 i915_gem_obj_ggtt_offset_view(struct drm_i915_gem_object *o,
const struct i915_ggtt_view *view)
{
- struct drm_i915_private *dev_priv = to_i915(o->base.dev);
- struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct i915_vma *vma;
list_for_each_entry(vma, &o->vma_list, obj_link)
- if (vma->vm == &ggtt->base &&
- i915_ggtt_view_equal(&vma->ggtt_view, view))
+ if (vma->is_ggtt && i915_ggtt_view_equal(&vma->ggtt_view, view))
return vma->node.start;
WARN(1, "global vma for this object not found. (view=%u)\n", view->type);
@@ -5286,12 +5491,10 @@ bool i915_gem_obj_bound(struct drm_i915_gem_object *o,
bool i915_gem_obj_ggtt_bound_view(struct drm_i915_gem_object *o,
const struct i915_ggtt_view *view)
{
- struct drm_i915_private *dev_priv = to_i915(o->base.dev);
- struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct i915_vma *vma;
list_for_each_entry(vma, &o->vma_list, obj_link)
- if (vma->vm == &ggtt->base &&
+ if (vma->is_ggtt &&
i915_ggtt_view_equal(&vma->ggtt_view, view) &&
drm_mm_node_allocated(&vma->node))
return true;
@@ -5310,23 +5513,18 @@ bool i915_gem_obj_bound_any(struct drm_i915_gem_object *o)
return false;
}
-unsigned long i915_gem_obj_size(struct drm_i915_gem_object *o,
- struct i915_address_space *vm)
+unsigned long i915_gem_obj_ggtt_size(struct drm_i915_gem_object *o)
{
- struct drm_i915_private *dev_priv = o->base.dev->dev_private;
struct i915_vma *vma;
- WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base);
-
- BUG_ON(list_empty(&o->vma_list));
+ GEM_BUG_ON(list_empty(&o->vma_list));
list_for_each_entry(vma, &o->vma_list, obj_link) {
if (vma->is_ggtt &&
- vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL)
- continue;
- if (vma->vm == vm)
+ vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL)
return vma->node.size;
}
+
return 0;
}
@@ -5347,7 +5545,7 @@ i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj, int n)
struct page *page;
/* Only default objects have per-page dirty tracking */
- if (WARN_ON((obj->ops->flags & I915_GEM_OBJECT_HAS_STRUCT_PAGE) == 0))
+ if (WARN_ON(!i915_gem_object_has_struct_page(obj)))
return NULL;
page = i915_gem_object_get_page(obj, n);
@@ -5365,8 +5563,8 @@ i915_gem_object_create_from_data(struct drm_device *dev,
size_t bytes;
int ret;
- obj = i915_gem_alloc_object(dev, round_up(size, PAGE_SIZE));
- if (IS_ERR_OR_NULL(obj))
+ obj = i915_gem_object_create(dev, round_up(size, PAGE_SIZE));
+ if (IS_ERR(obj))
return obj;
ret = i915_gem_object_set_to_cpu_domain(obj, true);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-12 08:53:12 +0000