Gecko [ v99win.today ]

Name	Size	Permission
bridge	[ DIR ]	drwxr-xr-x
i2c	[ DIR ]	drwxr-xr-x
ttm	[ DIR ]	drwxr-xr-x
amd_asic_type.h	2.15 KB	-rw-r--r--
drm_aperture.h	1.13 KB	-rw-r--r--
drm_atomic.h	40.7 KB	-rw-r--r--
drm_atomic_helper.h	9.27 KB	-rw-r--r--
drm_atomic_state_helper.h	4.21 KB	-rw-r--r--
drm_atomic_uapi.h	2.17 KB	-rw-r--r--
drm_audio_component.h	3.79 KB	-rw-r--r--
drm_auth.h	4.64 KB	-rw-r--r--
drm_blend.h	2.35 KB	-rw-r--r--
drm_bridge.h	33.19 KB	-rw-r--r--
drm_bridge_connector.h	548 B	-rw-r--r--
drm_cache.h	3.01 KB	-rw-r--r--
drm_client.h	4.94 KB	-rw-r--r--
drm_color_mgmt.h	3.79 KB	-rw-r--r--
drm_connector.h	55.15 KB	-rw-r--r--
drm_crtc.h	44.48 KB	-rw-r--r--
drm_crtc_helper.h	2.39 KB	-rw-r--r--
drm_damage_helper.h	3.33 KB	-rw-r--r--
drm_debugfs.h	3.4 KB	-rw-r--r--
drm_debugfs_crc.h	2.66 KB	-rw-r--r--
drm_device.h	8.52 KB	-rw-r--r--
drm_displayid.h	3.32 KB	-rw-r--r--
drm_dp_aux_bus.h	1.7 KB	-rw-r--r--
drm_dp_dual_mode_helper.h	4.62 KB	-rw-r--r--
drm_dp_helper.h	87.62 KB	-rw-r--r--
drm_dp_mst_helper.h	27.73 KB	-rw-r--r--
drm_drv.h	18.67 KB	-rw-r--r--
drm_dsc.h	16.29 KB	-rw-r--r--
drm_edid.h	17.16 KB	-rw-r--r--
drm_encoder.h	10.64 KB	-rw-r--r--
drm_encoder_slave.h	6.44 KB	-rw-r--r--
drm_fb_cma_helper.h	575 B	-rw-r--r--
drm_fb_helper.h	12.71 KB	-rw-r--r--
drm_file.h	12.12 KB	-rw-r--r--
drm_fixed.h	4.71 KB	-rw-r--r--
drm_flip_work.h	3.01 KB	-rw-r--r--
drm_format_helper.h	1.49 KB	-rw-r--r--
drm_fourcc.h	9.7 KB	-rw-r--r--
drm_framebuffer.h	10.4 KB	-rw-r--r--
drm_gem.h	11.8 KB	-rw-r--r--
drm_gem_atomic_helper.h	4.61 KB	-rw-r--r--
drm_gem_cma_helper.h	6.83 KB	-rw-r--r--
drm_gem_framebuffer_helper.h	2.06 KB	-rw-r--r--
drm_gem_shmem_helper.h	4.23 KB	-rw-r--r--
drm_gem_ttm_helper.h	861 B	-rw-r--r--
drm_gem_vram_helper.h	6.17 KB	-rw-r--r--
drm_hashtab.h	3.01 KB	-rw-r--r--
drm_hdcp.h	8.79 KB	-rw-r--r--
drm_ioctl.h	6.23 KB	-rw-r--r--
drm_lease.h	1010 B	-rw-r--r--
drm_legacy.h	9.26 KB	-rw-r--r--
drm_managed.h	3.35 KB	-rw-r--r--
drm_mipi_dbi.h	4.72 KB	-rw-r--r--
drm_mipi_dsi.h	10.79 KB	-rw-r--r--
drm_mm.h	17.5 KB	-rw-r--r--
drm_mode_config.h	32.24 KB	-rw-r--r--
drm_mode_object.h	5.17 KB	-rw-r--r--
drm_modes.h	18.18 KB	-rw-r--r--
drm_modeset_helper.h	1.77 KB	-rw-r--r--
drm_modeset_helper_vtables.h	55.98 KB	-rw-r--r--
drm_modeset_lock.h	6.8 KB	-rw-r--r--
drm_of.h	4.11 KB	-rw-r--r--
drm_panel.h	6.26 KB	-rw-r--r--
drm_pciids.h	66.47 KB	-rw-r--r--
drm_plane.h	28.48 KB	-rw-r--r--
drm_plane_helper.h	1.75 KB	-rw-r--r--
drm_prime.h	4.07 KB	-rw-r--r--
drm_print.h	16.09 KB	-rw-r--r--
drm_probe_helper.h	848 B	-rw-r--r--
drm_property.h	11.76 KB	-rw-r--r--
drm_rect.h	6.86 KB	-rw-r--r--
drm_scdc_helper.h	4.34 KB	-rw-r--r--
drm_self_refresh_helper.h	594 B	-rw-r--r--
drm_simple_kms_helper.h	8.91 KB	-rw-r--r--
drm_syncobj.h	3.85 KB	-rw-r--r--
drm_sysfs.h	442 B	-rw-r--r--
drm_util.h	2.58 KB	-rw-r--r--
drm_utils.h	504 B	-rw-r--r--
drm_vblank.h	9.04 KB	-rw-r--r--
drm_vblank_work.h	1.91 KB	-rw-r--r--
drm_vma_manager.h	8.15 KB	-rw-r--r--
drm_writeback.h	4.05 KB	-rw-r--r--
gma_drm.h	413 B	-rw-r--r--
gpu_scheduler.h	15.44 KB	-rw-r--r--
gud.h	11.58 KB	-rw-r--r--
i915_component.h	1.76 KB	-rw-r--r--
i915_drm.h	3.6 KB	-rw-r--r--
i915_mei_hdcp_interface.h	5.76 KB	-rw-r--r--
i915_pciids.h	21.38 KB	-rw-r--r--
intel-gtt.h	996 B	-rw-r--r--
intel_lpe_audio.h	1.72 KB	-rw-r--r--
spsc_queue.h	3.06 KB	-rw-r--r--
task_barrier.h	2.95 KB	-rw-r--r--

Code Editor : drm_gem_vram_helper.h

/* SPDX-License-Identifier: GPL-2.0-or-later */

#ifndef DRM_GEM_VRAM_HELPER_H
#define DRM_GEM_VRAM_HELPER_H

#include <drm/drm_file.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_ttm_helper.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_modes.h>
#include <drm/ttm/ttm_bo_api.h>
#include <drm/ttm/ttm_bo_driver.h>

#include <linux/dma-buf-map.h>
#include <linux/kernel.h> /* for container_of() */

struct drm_mode_create_dumb;
struct drm_plane;
struct drm_plane_state;
struct drm_simple_display_pipe;
struct filp;
struct vm_area_struct;

#define DRM_GEM_VRAM_PL_FLAG_SYSTEM	(1 << 0)
#define DRM_GEM_VRAM_PL_FLAG_VRAM	(1 << 1)
#define DRM_GEM_VRAM_PL_FLAG_TOPDOWN	(1 << 2)

/*
 * Buffer-object helpers
 */

/**
 * struct drm_gem_vram_object - GEM object backed by VRAM
 * @bo:		TTM buffer object
 * @map:	Mapping information for @bo
 * @placement:	TTM placement information. Supported placements are \
	%TTM_PL_VRAM and %TTM_PL_SYSTEM
 * @placements:	TTM placement information.
 *
 * The type struct drm_gem_vram_object represents a GEM object that is
 * backed by VRAM. It can be used for simple framebuffer devices with
 * dedicated memory. The buffer object can be evicted to system memory if
 * video memory becomes scarce.
 *
 * GEM VRAM objects perform reference counting for pin and mapping
 * operations. So a buffer object that has been pinned N times with
 * drm_gem_vram_pin() must be unpinned N times with
 * drm_gem_vram_unpin(). The same applies to pairs of
 * drm_gem_vram_kmap() and drm_gem_vram_kunmap(), as well as pairs of
 * drm_gem_vram_vmap() and drm_gem_vram_vunmap().
 */
struct drm_gem_vram_object {
	struct ttm_buffer_object bo;
	struct dma_buf_map map;

/**
	 * @vmap_use_count:
	 *
	 * Reference count on the virtual address.
	 * The address are un-mapped when the count reaches zero.
	 */
	unsigned int vmap_use_count;

/* Supported placements are %TTM_PL_VRAM and %TTM_PL_SYSTEM */
	struct ttm_placement placement;
	struct ttm_place placements[2];
};

/**
 * drm_gem_vram_of_bo - Returns the container of type
 * &struct drm_gem_vram_object for field bo.
 * @bo:		the VRAM buffer object
 * Returns:	The containing GEM VRAM object
 */
static inline struct drm_gem_vram_object *drm_gem_vram_of_bo(
	struct ttm_buffer_object *bo)
{
	return container_of(bo, struct drm_gem_vram_object, bo);
}

/**
 * drm_gem_vram_of_gem - Returns the container of type
 * &struct drm_gem_vram_object for field gem.
 * @gem:	the GEM object
 * Returns:	The containing GEM VRAM object
 */
static inline struct drm_gem_vram_object *drm_gem_vram_of_gem(
	struct drm_gem_object *gem)
{
	return container_of(gem, struct drm_gem_vram_object, bo.base);
}

struct drm_gem_vram_object *drm_gem_vram_create(struct drm_device *dev,
						size_t size,
						unsigned long pg_align);
void drm_gem_vram_put(struct drm_gem_vram_object *gbo);
s64 drm_gem_vram_offset(struct drm_gem_vram_object *gbo);
int drm_gem_vram_pin(struct drm_gem_vram_object *gbo, unsigned long pl_flag);
int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo);
int drm_gem_vram_vmap(struct drm_gem_vram_object *gbo, struct dma_buf_map *map);
void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo, struct dma_buf_map *map);

int drm_gem_vram_fill_create_dumb(struct drm_file *file,
				  struct drm_device *dev,
				  unsigned long pg_align,
				  unsigned long pitch_align,
				  struct drm_mode_create_dumb *args);

/*
 * Helpers for struct drm_driver
 */

int drm_gem_vram_driver_dumb_create(struct drm_file *file,
				    struct drm_device *dev,
				    struct drm_mode_create_dumb *args);

/*
 * Helpers for struct drm_plane_helper_funcs
 */
int
drm_gem_vram_plane_helper_prepare_fb(struct drm_plane *plane,
				     struct drm_plane_state *new_state);
void
drm_gem_vram_plane_helper_cleanup_fb(struct drm_plane *plane,
				     struct drm_plane_state *old_state);

/**
 * DRM_GEM_VRAM_PLANE_HELPER_FUNCS -
 *	Initializes struct drm_plane_helper_funcs for VRAM handling
 *
 * Drivers may use GEM BOs as VRAM helpers for the framebuffer memory. This
 * macro initializes struct drm_plane_helper_funcs to use the respective helper
 * functions.
 */
#define DRM_GEM_VRAM_PLANE_HELPER_FUNCS \
	.prepare_fb = drm_gem_vram_plane_helper_prepare_fb, \
	.cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb

/*
 * Helpers for struct drm_simple_display_pipe_funcs
 */

int drm_gem_vram_simple_display_pipe_prepare_fb(
	struct drm_simple_display_pipe *pipe,
	struct drm_plane_state *new_state);

void drm_gem_vram_simple_display_pipe_cleanup_fb(
	struct drm_simple_display_pipe *pipe,
	struct drm_plane_state *old_state);

/**
 * define DRM_GEM_VRAM_DRIVER - default callback functions for \
	&struct drm_driver
 *
 * Drivers that use VRAM MM and GEM VRAM can use this macro to initialize
 * &struct drm_driver with default functions.
 */
#define DRM_GEM_VRAM_DRIVER \
	.debugfs_init             = drm_vram_mm_debugfs_init, \
	.dumb_create		  = drm_gem_vram_driver_dumb_create, \
	.dumb_map_offset	  = drm_gem_ttm_dumb_map_offset, \
	.gem_prime_mmap		  = drm_gem_prime_mmap

/*
 *  VRAM memory manager
 */

/**
 * struct drm_vram_mm - An instance of VRAM MM
 * @vram_base:	Base address of the managed video memory
 * @vram_size:	Size of the managed video memory in bytes
 * @bdev:	The TTM BO device.
 * @funcs:	TTM BO functions
 *
 * The fields &struct drm_vram_mm.vram_base and
 * &struct drm_vram_mm.vrm_size are managed by VRAM MM, but are
 * available for public read access. Use the field
 * &struct drm_vram_mm.bdev to access the TTM BO device.
 */
struct drm_vram_mm {
	uint64_t vram_base;
	size_t vram_size;

struct ttm_device bdev;
};

/**
 * drm_vram_mm_of_bdev() - \
	Returns the container of type &struct ttm_device for field bdev.
 * @bdev:	the TTM BO device
 *
 * Returns:
 * The containing instance of &struct drm_vram_mm
 */
static inline struct drm_vram_mm *drm_vram_mm_of_bdev(
	struct ttm_device *bdev)
{
	return container_of(bdev, struct drm_vram_mm, bdev);
}

void drm_vram_mm_debugfs_init(struct drm_minor *minor);

/*
 * Helpers for integration with struct drm_device
 */

int drmm_vram_helper_init(struct drm_device *dev, uint64_t vram_base,
			  size_t vram_size);

/*
 * Mode-config helpers
 */

enum drm_mode_status
drm_vram_helper_mode_valid(struct drm_device *dev,
			   const struct drm_display_mode *mode);

#endif

${this.title}

Code Editor : drm_gem_vram_helper.h