drm/xe: Introduce a new DRM driver for Intel GPUs

Xe, is a new driver for Intel GPUs that supports both integrated and
discrete platforms starting with Tiger Lake (first Intel Xe Architecture).

The code is at a stage where it is already functional and has experimental
support for multiple platforms starting from Tiger Lake, with initial
support implemented in Mesa (for Iris and Anv, our OpenGL and Vulkan
drivers), as well as in NEO (for OpenCL and Level0).

The new Xe driver leverages a lot from i915.

As for display, the intent is to share the display code with the i915
driver so that there is maximum reuse there. But it is not added
in this patch.

This initial work is a collaboration of many people and unfortunately
the big squashed patch won't fully honor the proper credits. But let's
get some git quick stats so we can at least try to preserve some of the
credits:

Co-developed-by: Matthew Brost <matthew.brost@intel.com>
Co-developed-by: Matthew Auld <matthew.auld@intel.com>
Co-developed-by: Matt Roper <matthew.d.roper@intel.com>
Co-developed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Co-developed-by: Francois Dugast <francois.dugast@intel.com>
Co-developed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Co-developed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Co-developed-by: Philippe Lecluse <philippe.lecluse@intel.com>
Co-developed-by: Nirmoy Das <nirmoy.das@intel.com>
Co-developed-by: Jani Nikula <jani.nikula@intel.com>
Co-developed-by: José Roberto de Souza <jose.souza@intel.com>
Co-developed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Co-developed-by: Dave Airlie <airlied@redhat.com>
Co-developed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Co-developed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Co-developed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/gpu/drm/xe/xe_bo_types.h b/drivers/gpu/drm/xe/xe_bo_types.h
new file mode 100644
index 000000000000..06de3330211d
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_bo_types.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef _XE_BO_TYPES_H_
+#define _XE_BO_TYPES_H_
+
+#include <linux/iosys-map.h>
+
+#include <drm/drm_mm.h>
+#include <drm/ttm/ttm_bo.h>
+#include <drm/ttm/ttm_device.h>
+#include <drm/ttm/ttm_execbuf_util.h>
+#include <drm/ttm/ttm_placement.h>
+
+struct xe_device;
+struct xe_vm;
+
+#define XE_BO_MAX_PLACEMENTS	3
+
+/** @xe_bo: XE buffer object */
+struct xe_bo {
+	/** @ttm: TTM base buffer object */
+	struct ttm_buffer_object ttm;
+	/** @size: Size of this buffer object */
+	size_t size;
+	/** @flags: flags for this buffer object */
+	u32 flags;
+	/** @vm: VM this BO is attached to, for extobj this will be NULL */
+	struct xe_vm *vm;
+	/** @gt: GT this BO is attached to (kernel BO only) */
+	struct xe_gt *gt;
+	/** @vmas: List of VMAs for this BO */
+	struct list_head vmas;
+	/** @placements: valid placements for this BO */
+	struct ttm_place placements[XE_BO_MAX_PLACEMENTS];
+	/** @placement: current placement for this BO */
+	struct ttm_placement placement;
+	/** @ggtt_node: GGTT node if this BO is mapped in the GGTT */
+	struct drm_mm_node ggtt_node;
+	/** @vmap: iosys map of this buffer */
+	struct iosys_map vmap;
+	/** @ttm_kmap: TTM bo kmap object for internal use only. Keep off. */
+	struct ttm_bo_kmap_obj kmap;
+	/** @pinned_link: link to present / evicted list of pinned BO */
+	struct list_head pinned_link;
+	/** @props: BO user controlled properties */
+	struct {
+		/** @preferred_mem: preferred memory class for this BO */
+		s16 preferred_mem_class;
+		/** @prefered_gt: preferred GT for this BO */
+		s16 preferred_gt;
+		/** @preferred_mem_type: preferred memory type */
+		s32 preferred_mem_type;
+		/**
+		 * @cpu_atomic: the CPU expects to do atomics operations to
+		 * this BO
+		 */
+		bool cpu_atomic;
+		/**
+		 * @device_atomic: the device expects to do atomics operations
+		 * to this BO
+		 */
+		bool device_atomic;
+	} props;
+	/** @freed: List node for delayed put. */
+	struct llist_node freed;
+	/** @created: Whether the bo has passed initial creation */
+	bool created;
+};
+
+#endif