Merge tag 'drm-intel-next-2022-02-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

Linux core:
-----------
iosys-map: Add offset to iosys_map_memcpy_to() (Lucas)
iosys-map: Add a few more helpers (Lucas)

i915 (display and core changes on drm-intel-next):
--------------------------------------------------

- Display's DBuf and watermark related fixes and improvements (Ville)
- More i915 header and other code clean-up (Jani)
- Display IPS fixes and improvements (Ville)
- OPRegion fixes and cleanups (Jani)
- Fix the plane end Y offset check for FBC (Ville)
- DP 128b/132b updates (Jani)
- Disable runtime pm wakeref tracking for the mock device selftest (Ville)
- Many display code clean-up while targeting to fix up DP DFP 4:2:0 handling (Ville)
- Bigjoiner state tracking and more bigjoiner related work (Ville)
- Update DMC_DEBUG3 register for DG1 (Chuansheng)
- SAGV fixes (Ville)
- More GT register cleanup (Matt)
- Fix build issue when using clang (Tong)
- Display DG2 fixes (Matt)
- ADL-P PHY related fixes (Imre)
- PSR2 fixes (Jose)
- Add PCH Support for Alder Lake N (Tejas)

drm-intel-gt-next (drm-intel-gt-next-2022-02-17):
-------------------------------------------------
UAPI Changes:

- Weak parallel submission support for execlists

  Minimal implementation of the parallel submission support for
  execlists backend that was previously only implemented for GuC.
  Support one sibling non-virtual engine.

Core Changes:

- Two backmerges of drm/drm-next for header file renames/changes and
  i915_regs reorganization

Driver Changes:

- Add new DG2 subplatform: DG2-G12 (Matt R)
- Add new DG2 workarounds (Matt R, Ram, Bruce)
- Handle pre-programmed WOPCM registers for DG2+ (Daniele)
- Update guc shim control programming on XeHP SDV+ (Daniele)
- Add RPL-S C0/D0 stepping information (Anusha)
- Improve GuC ADS initialization to work on ARM64 on dGFX (Lucas)

- Fix KMD and GuC race on accessing PMU busyness (Umesh)
- Use PM timestamp instead of RING TIMESTAMP for reference in PMU with GuC (Umesh)
- Report error on invalid reset notification from GuC (John)
- Avoid WARN splat by holding RPM wakelock during PXP unbind (Juston)
- Fixes to parallel submission implementation (Matt B.)
- Improve GuC loading status check/error reports (John)
- Tweak TTM LRU priority hint selection (Matt A.)
- Align the plane_vma to min_page_size of stolen mem (Ram)

- Introduce vma resources and implement async unbinding (Thomas)
- Use struct vma_resource instead of struct vma_snapshot (Thomas)
- Return some TTM accel move errors instead of trying memcpy move (Thomas)
- Fix a race between vma / object destruction and unbinding (Thomas)
- Remove short-term pins from execbuf (Maarten)
- Update to GuC version 69.0.3 (John, Michal Wa.)
- Improvements to GT reset paths in GuC backend (Matt B.)
- Use shrinker_release_pages instead of writeback in shmem object hooks (Matt A., Tvrtko)
- Use trylock instead of blocking lock when freeing GEM objects (Maarten)
- Allocate intel_engine_coredump_alloc with ALLOW_FAIL (Matt B.)
- Fixes to object unmapping and purging (Matt A)
- Check for wedged device in GuC backend (John)
- Avoid lockdep splat by locking dpt_obj around set_cache_level (Maarten)
- Allow dead vm to unbind vma's without lock (Maarten)
- s/engine->i915/i915/ for DG2 engine workarounds (Matt R)

- Use to_gt() helper for GGTT accesses (Michal Wi.)
- Selftest improvements (Matt B., Thomas, Ram)
- Coding style and compiler warning fixes (Matt B., Jasmine, Andi, Colin, Gustavo, Dan)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YhbDan8wNZBR6FzF@intel.com

1 files changed, 234 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_vma_resource.h b/drivers/gpu/drm/i915/i915_vma_resource.h
new file mode 100644
index 000000000000..25913913baa6
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_vma_resource.h
@@ -0,0 +1,234 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __I915_VMA_RESOURCE_H__
+#define __I915_VMA_RESOURCE_H__
+
+#include <linux/dma-fence.h>
+#include <linux/refcount.h>
+
+#include "i915_gem.h"
+#include "i915_scatterlist.h"
+#include "i915_sw_fence.h"
+#include "intel_runtime_pm.h"
+
+struct intel_memory_region;
+
+struct i915_page_sizes {
+	/**
+	 * The sg mask of the pages sg_table. i.e the mask of
+	 * the lengths for each sg entry.
+	 */
+	unsigned int phys;
+
+	/**
+	 * The gtt page sizes we are allowed to use given the
+	 * sg mask and the supported page sizes. This will
+	 * express the smallest unit we can use for the whole
+	 * object, as well as the larger sizes we may be able
+	 * to use opportunistically.
+	 */
+	unsigned int sg;
+};
+
+/**
+ * struct i915_vma_resource - Snapshotted unbind information.
+ * @unbind_fence: Fence to mark unbinding complete. Note that this fence
+ * is not considered published until unbind is scheduled, and as such it
+ * is illegal to access this fence before scheduled unbind other than
+ * for refcounting.
+ * @lock: The @unbind_fence lock.
+ * @hold_count: Number of holders blocking the fence from finishing.
+ * The vma itself is keeping a hold, which is released when unbind
+ * is scheduled.
+ * @work: Work struct for deferred unbind work.
+ * @chain: Pointer to struct i915_sw_fence used to await dependencies.
+ * @rb: Rb node for the vm's pending unbind interval tree.
+ * @__subtree_last: Interval tree private member.
+ * @vm: non-refcounted pointer to the vm. This is for internal use only and
+ * this member is cleared after vm_resource unbind.
+ * @mr: The memory region of the object pointed to by the vma.
+ * @ops: Pointer to the backend i915_vma_ops.
+ * @private: Bind backend private info.
+ * @start: Offset into the address space of bind range start.
+ * @node_size: Size of the allocated range manager node.
+ * @vma_size: Bind size.
+ * @page_sizes_gtt: Resulting page sizes from the bind operation.
+ * @bound_flags: Flags indicating binding status.
+ * @allocated: Backend private data. TODO: Should move into @private.
+ * @immediate_unbind: Unbind can be done immediately and doesn't need to be
+ * deferred to a work item awaiting unsignaled fences. This is a hack.
+ * (dma_fence_work uses a fence flag for this, but this seems slightly
+ * cleaner).
+ *
+ * The lifetime of a struct i915_vma_resource is from a binding request to
+ * the actual possible asynchronous unbind has completed.
+ */
+struct i915_vma_resource {
+	struct dma_fence unbind_fence;
+	/* See above for description of the lock. */
+	spinlock_t lock;
+	refcount_t hold_count;
+	struct work_struct work;
+	struct i915_sw_fence chain;
+	struct rb_node rb;
+	u64 __subtree_last;
+	struct i915_address_space *vm;
+	intel_wakeref_t wakeref;
+
+	/**
+	 * struct i915_vma_bindinfo - Information needed for async bind
+	 * only but that can be dropped after the bind has taken place.
+	 * Consider making this a separate argument to the bind_vma
+	 * op, coalescing with other arguments like vm, stash, cache_level
+	 * and flags
+	 * @pages: The pages sg-table.
+	 * @page_sizes: Page sizes of the pages.
+	 * @pages_rsgt: Refcounted sg-table when delayed object destruction
+	 * is supported. May be NULL.
+	 * @readonly: Whether the vma should be bound read-only.
+	 * @lmem: Whether the vma points to lmem.
+	 */
+	struct i915_vma_bindinfo {
+		struct sg_table *pages;
+		struct i915_page_sizes page_sizes;
+		struct i915_refct_sgt *pages_rsgt;
+		bool readonly:1;
+		bool lmem:1;
+	} bi;
+
+#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
+	struct intel_memory_region *mr;
+#endif
+	const struct i915_vma_ops *ops;
+	void *private;
+	u64 start;
+	u64 node_size;
+	u64 vma_size;
+	u32 page_sizes_gtt;
+
+	u32 bound_flags;
+	bool allocated:1;
+	bool immediate_unbind:1;
+	bool needs_wakeref:1;
+};
+
+bool i915_vma_resource_hold(struct i915_vma_resource *vma_res,
+			    bool *lockdep_cookie);
+
+void i915_vma_resource_unhold(struct i915_vma_resource *vma_res,
+			      bool lockdep_cookie);
+
+struct i915_vma_resource *i915_vma_resource_alloc(void);
+
+void i915_vma_resource_free(struct i915_vma_resource *vma_res);
+
+struct dma_fence *i915_vma_resource_unbind(struct i915_vma_resource *vma_res);
+
+void __i915_vma_resource_init(struct i915_vma_resource *vma_res);
+
+/**
+ * i915_vma_resource_get - Take a reference on a vma resource
+ * @vma_res: The vma resource on which to take a reference.
+ *
+ * Return: The @vma_res pointer
+ */
+static inline struct i915_vma_resource
+*i915_vma_resource_get(struct i915_vma_resource *vma_res)
+{
+	dma_fence_get(&vma_res->unbind_fence);
+	return vma_res;
+}
+
+/**
+ * i915_vma_resource_put - Release a reference to a struct i915_vma_resource
+ * @vma_res: The resource
+ */
+static inline void i915_vma_resource_put(struct i915_vma_resource *vma_res)
+{
+	dma_fence_put(&vma_res->unbind_fence);
+}
+
+/**
+ * i915_vma_resource_init - Initialize a vma resource.
+ * @vma_res: The vma resource to initialize
+ * @vm: Pointer to the vm.
+ * @pages: The pages sg-table.
+ * @page_sizes: Page sizes of the pages.
+ * @pages_rsgt: Pointer to a struct i915_refct_sgt of an object with
+ * delayed destruction.
+ * @readonly: Whether the vma should be bound read-only.
+ * @lmem: Whether the vma points to lmem.
+ * @mr: The memory region of the object the vma points to.
+ * @ops: The backend ops.
+ * @private: Bind backend private info.
+ * @start: Offset into the address space of bind range start.
+ * @node_size: Size of the allocated range manager node.
+ * @size: Bind size.
+ *
+ * Initializes a vma resource allocated using i915_vma_resource_alloc().
+ * The reason for having separate allocate and initialize function is that
+ * initialization may need to be performed from under a lock where
+ * allocation is not allowed.
+ */
+static inline void i915_vma_resource_init(struct i915_vma_resource *vma_res,
+					  struct i915_address_space *vm,
+					  struct sg_table *pages,
+					  const struct i915_page_sizes *page_sizes,
+					  struct i915_refct_sgt *pages_rsgt,
+					  bool readonly,
+					  bool lmem,
+					  struct intel_memory_region *mr,
+					  const struct i915_vma_ops *ops,
+					  void *private,
+					  u64 start,
+					  u64 node_size,
+					  u64 size)
+{
+	__i915_vma_resource_init(vma_res);
+	vma_res->vm = vm;
+	vma_res->bi.pages = pages;
+	vma_res->bi.page_sizes = *page_sizes;
+	if (pages_rsgt)
+		vma_res->bi.pages_rsgt = i915_refct_sgt_get(pages_rsgt);
+	vma_res->bi.readonly = readonly;
+	vma_res->bi.lmem = lmem;
+#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
+	vma_res->mr = mr;
+#endif
+	vma_res->ops = ops;
+	vma_res->private = private;
+	vma_res->start = start;
+	vma_res->node_size = node_size;
+	vma_res->vma_size = size;
+}
+
+static inline void i915_vma_resource_fini(struct i915_vma_resource *vma_res)
+{
+	GEM_BUG_ON(refcount_read(&vma_res->hold_count) != 1);
+	if (vma_res->bi.pages_rsgt)
+		i915_refct_sgt_put(vma_res->bi.pages_rsgt);
+	i915_sw_fence_fini(&vma_res->chain);
+}
+
+int i915_vma_resource_bind_dep_sync(struct i915_address_space *vm,
+				    u64 first,
+				    u64 last,
+				    bool intr);
+
+int i915_vma_resource_bind_dep_await(struct i915_address_space *vm,
+				     struct i915_sw_fence *sw_fence,
+				     u64 first,
+				     u64 last,
+				     bool intr,
+				     gfp_t gfp);
+
+void i915_vma_resource_bind_dep_sync_all(struct i915_address_space *vm);
+
+void i915_vma_resource_module_exit(void);
+
+int i915_vma_resource_module_init(void);
+
+#endif