Merge tag 'drm-misc-next-2023-07-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v6.6:

UAPI Changes:

 * fbdev:
   * Make fbdev userspace interfaces optional; only leaves the
     framebuffer console active

 * prime:
   * Support dma-buf self-import for all drivers automatically: improves
     support for many userspace compositors

Cross-subsystem Changes:

 * backlight:
   * Fix interaction with fbdev in several drivers

 * base: Convert struct platform.remove to return void; part of a larger,
   tree-wide effort

 * dma-buf: Acquire reservation lock for mmap() in exporters; part
   of an on-going effort to simplify locking around dma-bufs

 * fbdev:
   * Use Linux device instead of fbdev device in many places
   * Use deferred-I/O helper macros in various drivers

 * i2c: Convert struct i2c from .probe_new to .probe; part of a larger,
   tree-wide effort

 * video:
   * Avoid including <linux/screen_info.h>

Core Changes:

 * atomic:
   * Improve logging

 * prime:
   * Remove struct drm_driver.gem_prime_mmap plus driver updates: all
     drivers now implement this callback with drm_gem_prime_mmap()

 * gem:
   * Support execution contexts: provides locking over multiple GEM
     objects

 * ttm:
   * Support init_on_free
   * Swapout fixes

Driver Changes:

 * accel:
   * ivpu: MMU updates; Support debugfs

 * ast:
   * Improve device-model detection
   * Cleanups

 * bridge:
   * dw-hdmi: Improve support for YUV420 bus format
   * dw-mipi-dsi: Fix enable/disable of DSI controller
   * lt9611uxc: Use MODULE_FIRMWARE()
   * ps8640: Remove broken EDID code
   * samsung-dsim: Fix command transfer
   * tc358764: Handle HS/VS polarity; Use BIT() macro; Various cleanups
   * Cleanups

 * ingenic:
   * Kconfig REGMAP fixes

 * loongson:
   * Support display controller

 * mgag200:
   * Minor fixes

 * mxsfb:
   * Support disabling overlay planes

 * nouveau:
   * Improve VRAM detection
   * Various fixes and cleanups

 * panel:
   * panel-edp: Support AUO B116XAB01.4
   * Support Visionox R66451 plus DT bindings
   * Cleanups

 * ssd130x:
   * Support per-controller default resolution plus DT bindings
   * Reduce memory-allocation overhead
   * Cleanups

 * tidss:
   * Support TI AM625 plus DT bindings
   * Implement new connector model plus driver updates

 * vkms
   * Improve write-back support
   * Documentation fixes

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230713090830.GA23281@linux-uq9g

1 files changed, 99 insertions, 0 deletions

diff --git a/drivers/gpu/drm/loongson/lsdc_ttm.h b/drivers/gpu/drm/loongson/lsdc_ttm.h
new file mode 100644
index 000000000000..843e1475064e
--- /dev/null
+++ b/drivers/gpu/drm/loongson/lsdc_ttm.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+
+#ifndef __LSDC_TTM_H__
+#define __LSDC_TTM_H__
+
+#include <linux/container_of.h>
+#include <linux/iosys-map.h>
+#include <linux/list.h>
+
+#include <drm/drm_gem.h>
+#include <drm/ttm/ttm_bo.h>
+#include <drm/ttm/ttm_placement.h>
+#include <drm/ttm/ttm_range_manager.h>
+#include <drm/ttm/ttm_tt.h>
+
+#define LSDC_GEM_DOMAIN_SYSTEM          0x1
+#define LSDC_GEM_DOMAIN_GTT             0x2
+#define LSDC_GEM_DOMAIN_VRAM            0x4
+
+struct lsdc_bo {
+	struct ttm_buffer_object tbo;
+
+	/* Protected by gem.mutex */
+	struct list_head list;
+
+	struct iosys_map map;
+
+	unsigned int vmap_count;
+	/* cross device driver sharing reference count */
+	unsigned int sharing_count;
+
+	struct ttm_bo_kmap_obj kmap;
+	void *kptr;
+	bool is_iomem;
+
+	size_t size;
+
+	u32 initial_domain;
+
+	struct ttm_placement placement;
+	struct ttm_place placements[4];
+};
+
+static inline struct ttm_buffer_object *to_ttm_bo(struct drm_gem_object *gem)
+{
+	return container_of(gem, struct ttm_buffer_object, base);
+}
+
+static inline struct lsdc_bo *to_lsdc_bo(struct ttm_buffer_object *tbo)
+{
+	return container_of(tbo, struct lsdc_bo, tbo);
+}
+
+static inline struct lsdc_bo *gem_to_lsdc_bo(struct drm_gem_object *gem)
+{
+	return container_of(gem, struct lsdc_bo, tbo.base);
+}
+
+const char *lsdc_mem_type_to_str(uint32_t mem_type);
+const char *lsdc_domain_to_str(u32 domain);
+
+struct lsdc_bo *lsdc_bo_create(struct drm_device *ddev,
+			       u32 domain,
+			       size_t size,
+			       bool kernel,
+			       struct sg_table *sg,
+			       struct dma_resv *resv);
+
+struct lsdc_bo *lsdc_bo_create_kernel_pinned(struct drm_device *ddev,
+					     u32 domain,
+					     size_t size);
+
+void lsdc_bo_free_kernel_pinned(struct lsdc_bo *lbo);
+
+int lsdc_bo_reserve(struct lsdc_bo *lbo);
+void lsdc_bo_unreserve(struct lsdc_bo *lbo);
+
+int lsdc_bo_pin(struct lsdc_bo *lbo, u32 domain, u64 *gpu_addr);
+void lsdc_bo_unpin(struct lsdc_bo *lbo);
+
+void lsdc_bo_ref(struct lsdc_bo *lbo);
+void lsdc_bo_unref(struct lsdc_bo *lbo);
+
+u64 lsdc_bo_gpu_offset(struct lsdc_bo *lbo);
+size_t lsdc_bo_size(struct lsdc_bo *lbo);
+
+int lsdc_bo_kmap(struct lsdc_bo *lbo);
+void lsdc_bo_kunmap(struct lsdc_bo *lbo);
+void lsdc_bo_clear(struct lsdc_bo *lbo);
+
+int lsdc_bo_evict_vram(struct drm_device *ddev);
+
+int lsdc_ttm_init(struct lsdc_device *ldev);
+void lsdc_ttm_debugfs_init(struct lsdc_device *ldev);
+
+#endif