Merge tag 'drm-for-v4.17' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "Cannonlake and Vega12 support are probably the two major things. This
  pull lacks nouveau, Ben had some unforseen leave and a few other
  blockers so we'll see how things look or maybe leave it for this merge
  window.

  core:
   - Device links to handle sound/gpu pm dependency
   - Color encoding/range properties
   - Plane clipping into plane check helper
   - Backlight helpers
   - DP TP4 + HBR3 helper support

  amdgpu:
   - Vega12 support
   - Enable DC by default on all supported GPUs
   - Powerplay restructuring and cleanup
   - DC bandwidth calc updates
   - DC backlight on pre-DCE11
   - TTM backing store dropping support
   - SR-IOV fixes
   - Adding "wattman" like functionality
   - DC crc support
   - Improved DC dual-link handling

  amdkfd:
   - GPUVM support for dGPU
   - KFD events for dGPU
   - Enable PCIe atomics for dGPUs
   - HSA process eviction support
   - Live-lock fixes for process eviction
   - VM page table allocation fix for large-bar systems

  panel:
   - Raydium RM68200
   - AUO G104SN02 V2
   - KEO TX31D200VM0BAA
   - ARM Versatile panels

  i915:
   - Cannonlake support enabled
   - AUX-F port support added
   - Icelake base enabling until internal milestone of forcewake support
   - Query uAPI interface (used for GPU topology information currently)
   - Compressed framebuffer support for sprites
   - kmem cache shrinking when GPU is idle
   - Avoid boosting GPU when waited item is being processed already
   - Avoid retraining LSPCON link unnecessarily
   - Decrease request signaling latency
   - Deprecation of I915_SET_COLORKEY_NONE
   - Kerneldoc and compiler warning cleanup for upcoming CI enforcements
   - Full range ycbcr toggling
   - HDCP support

  i915/gvt:
   - Big refactor for shadow ppgtt
   - KBL context save/restore via LRI cmd (Weinan)
   - Properly unmap dma for guest page (Changbin)

  vmwgfx:
   - Lots of various improvements

  etnaviv:
   - Use the drm gpu scheduler
   - prep work for GC7000L support

  vc4:
   - fix alpha blending
   - Expose perf counters to userspace

  pl111:
   - Bandwidth checking/limiting
   - Versatile panel support

  sun4i:
   - A83T HDMI support
   - A80 support
   - YUV plane support
   - H3/H5 HDMI support

  omapdrm:
   - HPD support for DVI connector
   - remove lots of static variables

  msm:
   - DSI updates from 10nm / SDM845
   - fix for race condition with a3xx/a4xx fence completion irq
   - some refactoring/prep work for eventual a6xx support (ie. when we
     have a userspace)
   - a5xx debugfs enhancements
   - some mdp5 fixes/cleanups to prepare for eventually merging
     writeback
   - support (ie. when we have a userspace)

  tegra:
   - mmap() fixes for fbdev devices
   - Overlay plane for hw cursor fix
   - dma-buf cache maintenance support

  mali-dp:
   - YUV->RGB conversion support

  rockchip:
   - rk3399/chromebook fixes and improvements

  rcar-du:
   - LVDS support move to drm bridge
   - DT bindings for R8A77995
   - Driver/DT support for R8A77970

  tilcdc:
   - DRM panel support"

* tag 'drm-for-v4.17' of git://people.freedesktop.org/~airlied/linux: (1646 commits)
  drm/i915: Fix hibernation with ACPI S0 target state
  drm/i915/execlists: Use a locked clear_bit() for synchronisation with interrupt
  drm/i915: Specify which engines to reset following semaphore/event lockups
  drm/i915/dp: Write to SET_POWER dpcd to enable MST hub.
  drm/amdkfd: Use ordered workqueue to restore processes
  drm/amdgpu: Fix acquiring VM on large-BAR systems
  drm/amd/pp: clean header file hwmgr.h
  drm/amd/pp: use mlck_table.count for array loop index limit
  drm: Fix uabi regression by allowing garbage mode->type from userspace
  drm/amdgpu: Add an ATPX quirk for hybrid laptop
  drm/amdgpu: fix spelling mistake: "asssert" -> "assert"
  drm/amd/pp: Add new asic support in pp_psm.c
  drm/amd/pp: Clean up powerplay code on Vega12
  drm/amd/pp: Add smu irq handlers for legacy asics
  drm/amd/pp: Fix set wrong temperature range on smu7
  drm/amdgpu: Don't change preferred domian when fallback GTT v5
  drm/vmwgfx: Bump version patchlevel and date
  drm/vmwgfx: use monotonic event timestamps
  drm/vmwgfx: Unpin the screen object backup buffer when not used
  drm/vmwgfx: Stricter count of legacy surface device resources
  ...

1 files changed, 24 insertions, 22 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
index a88051552ace..8a25d1974385 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
@@ -210,6 +210,7 @@ static ssize_t ttm_pool_store(struct kobject *kobj, struct attribute *attr,
 		container_of(kobj, struct ttm_pool_manager, kobj);
 	int chars;
 	unsigned val;
+
 	chars = sscanf(buffer, "%u", &val);
 	if (chars == 0)
 		return size;
@@ -217,11 +218,11 @@ static ssize_t ttm_pool_store(struct kobject *kobj, struct attribute *attr,
 	/* Convert kb to number of pages */
 	val = val / (PAGE_SIZE >> 10);
 
-	if (attr == &ttm_page_pool_max)
+	if (attr == &ttm_page_pool_max) {
 		m->options.max_size = val;
-	else if (attr == &ttm_page_pool_small)
+	} else if (attr == &ttm_page_pool_small) {
 		m->options.small = val;
-	else if (attr == &ttm_page_pool_alloc_size) {
+	} else if (attr == &ttm_page_pool_alloc_size) {
 		if (val > NUM_PAGES_TO_ALLOC*8) {
 			pr_err("Setting allocation size to %lu is not allowed. Recommended size is %lu\n",
 			       NUM_PAGES_TO_ALLOC*(PAGE_SIZE >> 7),
@@ -389,14 +390,12 @@ static void ttm_dma_page_put(struct dma_pool *pool, struct dma_page *d_page)
 {
 	struct page *page = d_page->p;
 	unsigned i, num_pages;
-	int ret;
 
 	/* Don't set WB on WB page pool. */
 	if (!(pool->type & IS_CACHED)) {
 		num_pages = pool->size / PAGE_SIZE;
 		for (i = 0; i < num_pages; ++i, ++page) {
-			ret = set_pages_array_wb(&page, 1);
-			if (ret) {
+			if (set_pages_array_wb(&page, 1)) {
 				pr_err("%s: Failed to set %d pages to wb!\n",
 				       pool->dev_name, 1);
 			}
@@ -681,10 +680,10 @@ err_mem:
 static struct dma_pool *ttm_dma_find_pool(struct device *dev,
 					  enum pool_type type)
 {
-	struct dma_pool *pool, *tmp, *found = NULL;
+	struct dma_pool *pool, *tmp;
 
 	if (type == IS_UNDEFINED)
-		return found;
+		return NULL;
 
 	/* NB: We iterate on the 'struct dev' which has no spinlock, but
 	 * it does have a kref which we have taken. The kref is taken during
@@ -697,13 +696,10 @@ static struct dma_pool *ttm_dma_find_pool(struct device *dev,
 	 * thing is at that point of time there are no pages associated with the
 	 * driver so this function will not be called.
 	 */
-	list_for_each_entry_safe(pool, tmp, &dev->dma_pools, pools) {
-		if (pool->type != type)
-			continue;
-		found = pool;
-		break;
-	}
-	return found;
+	list_for_each_entry_safe(pool, tmp, &dev->dma_pools, pools)
+		if (pool->type == type)
+			return pool;
+	return NULL;
 }
 
 /*
@@ -765,10 +761,9 @@ static int ttm_dma_pool_alloc_new_pages(struct dma_pool *pool,
 		return -ENOMEM;
 	}
 
-	if (count > 1) {
+	if (count > 1)
 		pr_debug("%s: (%s:%d) Getting %d pages\n",
 			 pool->dev_name, pool->name, current->pid, count);
-	}
 
 	for (i = 0, cpages = 0; i < count; ++i) {
 		dma_p = __ttm_dma_alloc_page(pool);
@@ -920,6 +915,9 @@ static gfp_t ttm_dma_pool_gfp_flags(struct ttm_dma_tt *ttm_dma, bool huge)
 		gfp_flags &= ~__GFP_COMP;
 	}
 
+	if (ttm->page_flags & TTM_PAGE_FLAG_NO_RETRY)
+		gfp_flags |= __GFP_RETRY_MAYFAIL;
+
 	return gfp_flags;
 }
 
@@ -931,7 +929,7 @@ int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev,
 			struct ttm_operation_ctx *ctx)
 {
 	struct ttm_tt *ttm = &ttm_dma->ttm;
-	struct ttm_mem_global *mem_glob = ttm->glob->mem_glob;
+	struct ttm_mem_global *mem_glob = ttm->bdev->glob->mem_glob;
 	unsigned long num_pages = ttm->num_pages;
 	struct dma_pool *pool;
 	struct dma_page *d_page;
@@ -942,6 +940,9 @@ int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev,
 	if (ttm->state != tt_unpopulated)
 		return 0;
 
+	if (ttm_check_under_lowerlimit(mem_glob, num_pages, ctx))
+		return -ENOMEM;
+
 	INIT_LIST_HEAD(&ttm_dma->pages_list);
 	i = 0;
 
@@ -1033,6 +1034,7 @@ EXPORT_SYMBOL_GPL(ttm_dma_populate);
 void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev)
 {
 	struct ttm_tt *ttm = &ttm_dma->ttm;
+	struct ttm_mem_global *mem_glob = ttm->bdev->glob->mem_glob;
 	struct dma_pool *pool;
 	struct dma_page *d_page, *next;
 	enum pool_type type;
@@ -1053,8 +1055,8 @@ void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev)
 
 			count++;
 			if (d_page->vaddr & VADDR_FLAG_UPDATED_COUNT) {
-				ttm_mem_global_free_page(ttm->glob->mem_glob,
-							 d_page->p, pool->size);
+				ttm_mem_global_free_page(mem_glob, d_page->p,
+							 pool->size);
 				d_page->vaddr &= ~VADDR_FLAG_UPDATED_COUNT;
 			}
 			ttm_dma_page_put(pool, d_page);
@@ -1082,8 +1084,8 @@ void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev)
 		count++;
 
 		if (d_page->vaddr & VADDR_FLAG_UPDATED_COUNT) {
-			ttm_mem_global_free_page(ttm->glob->mem_glob,
-						 d_page->p, pool->size);
+			ttm_mem_global_free_page(mem_glob, d_page->p,
+						 pool->size);
 			d_page->vaddr &= ~VADDR_FLAG_UPDATED_COUNT;
 		}