Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /**************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (c) 2007-2008, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  **************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #ifndef _PSB_GTT_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define _PSB_GTT_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <drm/drm_gem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /* This wants cleaning up with respect to the psb_dev and un-needed stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct psb_gtt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	uint32_t gatt_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	uint32_t mmu_gatt_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	uint32_t gtt_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	uint32_t gtt_phys_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	unsigned gtt_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	unsigned gatt_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	unsigned long stolen_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	unsigned long vram_stolen_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	struct rw_semaphore sem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /* Exported functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) extern int psb_gtt_init(struct drm_device *dev, int resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) extern void psb_gtt_takedown(struct drm_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* Each gtt_range describes an allocation in the GTT area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct gtt_range {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	struct resource resource;	/* Resource for our allocation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	u32 offset;			/* GTT offset of our object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	struct drm_gem_object gem;	/* GEM high level stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	int in_gart;			/* Currently in the GART (ref ct) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	bool stolen;			/* Backed from stolen RAM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	bool mmapping;			/* Is mmappable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct page **pages;		/* Backing pages if present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	int npage;			/* Number of backing pages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	int roll;			/* Roll applied to the GTT entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define to_gtt_range(x) container_of(x, struct gtt_range, gem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) extern struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 					     const char *name, int backed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 					     u32 align);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) extern void psb_gtt_kref_put(struct gtt_range *gt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) extern void psb_gtt_free_range(struct drm_device *dev, struct gtt_range *gt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) extern int psb_gtt_pin(struct gtt_range *gt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) extern void psb_gtt_unpin(struct gtt_range *gt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) extern void psb_gtt_roll(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 					struct gtt_range *gt, int roll);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) extern int psb_gtt_restore(struct drm_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #endif