/* * Header for the Direct Rendering Manager * * Author: Rickard E. (Rik) Faith <faith@valinux.com> * * Acknowledgments: * Dec 1999, Richard Henderson <rth@twiddle.net>, move to generic cmpxchg.
*/
/* * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE.
*/
#define DRM_NAME "drm"/**< Name in kernel, /dev, and /proc */ #define DRM_MIN_ORDER 5 /**< At least 2^5 bytes = 32 bytes */ #define DRM_MAX_ORDER 22 /**< Up to 2^22 bytes = 4MB */ #define DRM_RAM_PERCENT 10 /**< How much system ram can we lock? */
/* * Cliprect. * * \warning: If you change this structure, make sure you change * XF86DRIClipRectRec in the server as well * * \note KW: Actually it's illegal to change either for * backwards-compatibility reasons.
*/ struct drm_clip_rect { unsignedshort x1; unsignedshort y1; unsignedshort x2; unsignedshort y2;
};
/* * Hardware lock. * * The lock structure is a simple cache-line aligned integer. To avoid * processor bus contention on a multiprocessor system, there should not be any * other data stored in the same cache line.
*/ struct drm_hw_lock {
__volatile__ unsignedint lock; /**< lock variable */ char padding[60]; /**< Pad to cache line */
};
/* * DRM_IOCTL_VERSION ioctl argument type. * * \sa drmGetVersion().
*/ struct drm_version { int version_major; /**< Major version */ int version_minor; /**< Minor version */ int version_patchlevel; /**< Patch level */
__kernel_size_t name_len; /**< Length of name buffer */ char __user *name; /**< Name of driver */
__kernel_size_t date_len; /**< Length of date buffer */ char __user *date; /**< User-space buffer to hold date */
__kernel_size_t desc_len; /**< Length of desc buffer */ char __user *desc; /**< User-space buffer to hold desc */
};
/* * DRM_IOCTL_GET_UNIQUE ioctl argument type. * * \sa drmGetBusid() and drmSetBusId().
*/ struct drm_unique {
__kernel_size_t unique_len; /**< Length of unique */ char __user *unique; /**< Unique name for driver instantiation */
};
struct drm_list { int count; /**< Length of user-space structures */ struct drm_version __user *version;
};
/* * Hardware locking flags.
*/ enum drm_lock_flags {
_DRM_LOCK_READY = 0x01, /**< Wait until hardware is ready for DMA */
_DRM_LOCK_QUIESCENT = 0x02, /**< Wait until hardware quiescent */
_DRM_LOCK_FLUSH = 0x04, /**< Flush this context's DMA queue first */
_DRM_LOCK_FLUSH_ALL = 0x08, /**< Flush all DMA queues first */ /* These *HALT* flags aren't supported yet -- they will be used to support the
full-screen DGA-like mode. */
_DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
_DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */
};
/* * DRM_IOCTL_LOCK, DRM_IOCTL_UNLOCK and DRM_IOCTL_FINISH ioctl argument type. * * \sa drmGetLock() and drmUnlock().
*/ struct drm_lock { int context; enum drm_lock_flags flags;
};
/* * DMA flags * * \warning * These values \e must match xf86drm.h. * * \sa drm_dma.
*/ enum drm_dma_flags { /* Flags for DMA buffer dispatch */
_DRM_DMA_BLOCK = 0x01, /**< * Block until buffer dispatched. * * \note The buffer may not yet have * been processed by the hardware -- * getting a hardware lock with the * hardware quiescent will ensure * that the buffer has been * processed.
*/
_DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
_DRM_DMA_PRIORITY = 0x04, /**< High priority dispatch */
/* Flags for DMA buffer request */
_DRM_DMA_WAIT = 0x10, /**< Wait for free buffers */
_DRM_DMA_SMALLER_OK = 0x20, /**< Smaller-than-requested buffers OK */
_DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers OK */
};
/* * DRM_IOCTL_ADD_BUFS and DRM_IOCTL_MARK_BUFS ioctl argument type. * * \sa drmAddBufs().
*/ struct drm_buf_desc { int count; /**< Number of buffers of this size */ int size; /**< Size in bytes */ int low_mark; /**< Low water mark */ int high_mark; /**< High water mark */ enum {
_DRM_PAGE_ALIGN = 0x01, /**< Align on page boundaries for DMA */
_DRM_AGP_BUFFER = 0x02, /**< Buffer is in AGP space */
_DRM_SG_BUFFER = 0x04, /**< Scatter/gather memory buffer */
_DRM_FB_BUFFER = 0x08, /**< Buffer is in frame buffer */
_DRM_PCI_BUFFER_RO = 0x10 /**< Map PCI DMA buffer read-only */
} flags; unsignedlong agp_start; /**< * Start address of where the AGP buffers are * in the AGP aperture
*/
};
/* * DRM_IOCTL_INFO_BUFS ioctl argument type.
*/ struct drm_buf_info { int count; /**< Entries in list */ struct drm_buf_desc __user *list;
};
/* * DRM_IOCTL_FREE_BUFS ioctl argument type.
*/ struct drm_buf_free { int count; int __user *list;
};
/* * Buffer information * * \sa drm_buf_map.
*/ struct drm_buf_pub { int idx; /**< Index into the master buffer list */ int total; /**< Buffer size */ int used; /**< Amount of buffer in use (for DMA) */ void __user *address; /**< Address of buffer */
};
/* * DRM_IOCTL_MAP_BUFS ioctl argument type.
*/ struct drm_buf_map { int count; /**< Length of the buffer list */ #ifdef __cplusplus void __user *virt; #else void __user *virtual; /**< Mmap'd area in user-virtual */ #endif struct drm_buf_pub __user *list; /**< Buffer information */
};
/* * DRM_IOCTL_DMA ioctl argument type. * * Indices here refer to the offset into the buffer list in drm_buf_get. * * \sa drmDMA().
*/ struct drm_dma { int context; /**< Context handle */ int send_count; /**< Number of buffers to send */ int __user *send_indices; /**< List of handles to buffers */ int __user *send_sizes; /**< Lengths of data to send */ enum drm_dma_flags flags; /**< Flags */ int request_count; /**< Number of buffers requested */ int request_size; /**< Desired size for buffers */ int __user *request_indices; /**< Buffer information */ int __user *request_sizes; int granted_count; /**< Number of buffers granted */
};
/* * DRM_IOCTL_IRQ_BUSID ioctl argument type. * * \sa drmGetInterruptFromBusID().
*/ struct drm_irq_busid { int irq; /**< IRQ number */ int busnum; /**< bus number */ int devnum; /**< device number */ int funcnum; /**< function number */
};
enum drm_vblank_seq_type {
_DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
_DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */ /* bits 1-6 are reserved for high crtcs */
_DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
_DRM_VBLANK_EVENT = 0x4000000, /**< Send event instead of blocking */
_DRM_VBLANK_FLIP = 0x8000000, /**< Scheduled buffer swap should flip */
_DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
_DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
_DRM_VBLANK_SIGNAL = 0x40000000 /**< Send signal instead of blocking, unsupported */
}; #define _DRM_VBLANK_HIGH_CRTC_SHIFT 1
/* * DRM_IOCTL_AGP_ALLOC and DRM_IOCTL_AGP_FREE ioctls argument type. * * \sa drmAgpAlloc() and drmAgpFree().
*/ struct drm_agp_buffer { unsignedlong size; /**< In bytes -- will round to page boundary */ unsignedlong handle; /**< Used for binding / unbinding */ unsignedlong type; /**< Type of memory to allocate */ unsignedlong physical; /**< Physical used by i810 */
};
/* * DRM_IOCTL_AGP_BIND and DRM_IOCTL_AGP_UNBIND ioctls argument type. * * \sa drmAgpBind() and drmAgpUnbind().
*/ struct drm_agp_binding { unsignedlong handle; /**< From drm_agp_buffer */ unsignedlong offset; /**< In bytes -- will round to page boundary */
};
/* PCI information */ unsignedshort id_vendor; unsignedshort id_device;
};
/* * DRM_IOCTL_SG_ALLOC ioctl argument type.
*/ struct drm_scatter_gather { unsignedlong size; /**< In bytes -- will round to page boundary */ unsignedlong handle; /**< Used for mapping / unmapping */
};
/* * DRM_IOCTL_SET_VERSION ioctl argument type.
*/ struct drm_set_version { int drm_di_major; int drm_di_minor; int drm_dd_major; int drm_dd_minor;
};
/* DRM_IOCTL_GEM_CLOSE ioctl argument type */ struct drm_gem_close { /** Handle of the object to be closed. */
__u32 handle;
__u32 pad;
};
/* DRM_IOCTL_GEM_FLINK ioctl argument type */ struct drm_gem_flink { /** Handle for the object being named */
__u32 handle;
/** Returned global name */
__u32 name;
};
/* DRM_IOCTL_GEM_OPEN ioctl argument type */ struct drm_gem_open { /** Name of object being opened */
__u32 name;
/** Returned handle for the object */
__u32 handle;
/** Returned size of the object */
__u64 size;
};
/** * DRM_CAP_DUMB_BUFFER * * If set to 1, the driver supports creating dumb buffers via the * &DRM_IOCTL_MODE_CREATE_DUMB ioctl.
*/ #define DRM_CAP_DUMB_BUFFER 0x1 /** * DRM_CAP_VBLANK_HIGH_CRTC * * If set to 1, the kernel supports specifying a :ref:`CRTC index<crtc_index>` * in the high bits of &drm_wait_vblank_request.type. * * Starting kernel version 2.6.39, this capability is always set to 1.
*/ #define DRM_CAP_VBLANK_HIGH_CRTC 0x2 /** * DRM_CAP_DUMB_PREFERRED_DEPTH * * The preferred bit depth for dumb buffers. * * The bit depth is the number of bits used to indicate the color of a single * pixel excluding any padding. This is different from the number of bits per * pixel. For instance, XRGB8888 has a bit depth of 24 but has 32 bits per * pixel. * * Note that this preference only applies to dumb buffers, it's irrelevant for * other types of buffers.
*/ #define DRM_CAP_DUMB_PREFERRED_DEPTH 0x3 /** * DRM_CAP_DUMB_PREFER_SHADOW * * If set to 1, the driver prefers userspace to render to a shadow buffer * instead of directly rendering to a dumb buffer. For best speed, userspace * should do streaming ordered memory copies into the dumb buffer and never * read from it. * * Note that this preference only applies to dumb buffers, it's irrelevant for * other types of buffers.
*/ #define DRM_CAP_DUMB_PREFER_SHADOW 0x4 /** * DRM_CAP_PRIME * * Bitfield of supported PRIME sharing capabilities. See &DRM_PRIME_CAP_IMPORT * and &DRM_PRIME_CAP_EXPORT. * * Starting from kernel version 6.6, both &DRM_PRIME_CAP_IMPORT and * &DRM_PRIME_CAP_EXPORT are always advertised. * * PRIME buffers are exposed as dma-buf file descriptors. * See :ref:`prime_buffer_sharing`.
*/ #define DRM_CAP_PRIME 0x5 /** * DRM_PRIME_CAP_IMPORT * * If this bit is set in &DRM_CAP_PRIME, the driver supports importing PRIME * buffers via the &DRM_IOCTL_PRIME_FD_TO_HANDLE ioctl. * * Starting from kernel version 6.6, this bit is always set in &DRM_CAP_PRIME.
*/ #define DRM_PRIME_CAP_IMPORT 0x1 /** * DRM_PRIME_CAP_EXPORT * * If this bit is set in &DRM_CAP_PRIME, the driver supports exporting PRIME * buffers via the &DRM_IOCTL_PRIME_HANDLE_TO_FD ioctl. * * Starting from kernel version 6.6, this bit is always set in &DRM_CAP_PRIME.
*/ #define DRM_PRIME_CAP_EXPORT 0x2 /** * DRM_CAP_TIMESTAMP_MONOTONIC * * If set to 0, the kernel will report timestamps with ``CLOCK_REALTIME`` in * struct drm_event_vblank. If set to 1, the kernel will report timestamps with * ``CLOCK_MONOTONIC``. See ``clock_gettime(2)`` for the definition of these * clocks. * * Starting from kernel version 2.6.39, the default value for this capability * is 1. Starting kernel version 4.15, this capability is always set to 1.
*/ #define DRM_CAP_TIMESTAMP_MONOTONIC 0x6 /** * DRM_CAP_ASYNC_PAGE_FLIP * * If set to 1, the driver supports &DRM_MODE_PAGE_FLIP_ASYNC for legacy * page-flips.
*/ #define DRM_CAP_ASYNC_PAGE_FLIP 0x7 /** * DRM_CAP_CURSOR_WIDTH * * The ``CURSOR_WIDTH`` and ``CURSOR_HEIGHT`` capabilities return a valid * width x height combination for the hardware cursor. The intention is that a * hardware agnostic userspace can query a cursor plane size to use. * * Note that the cross-driver contract is to merely return a valid size; * drivers are free to attach another meaning on top, eg. i915 returns the * maximum plane size.
*/ #define DRM_CAP_CURSOR_WIDTH 0x8 /** * DRM_CAP_CURSOR_HEIGHT * * See &DRM_CAP_CURSOR_WIDTH.
*/ #define DRM_CAP_CURSOR_HEIGHT 0x9 /** * DRM_CAP_ADDFB2_MODIFIERS * * If set to 1, the driver supports supplying modifiers in the * &DRM_IOCTL_MODE_ADDFB2 ioctl.
*/ #define DRM_CAP_ADDFB2_MODIFIERS 0x10 /** * DRM_CAP_PAGE_FLIP_TARGET * * If set to 1, the driver supports the &DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE and * &DRM_MODE_PAGE_FLIP_TARGET_RELATIVE flags in * &drm_mode_crtc_page_flip_target.flags for the &DRM_IOCTL_MODE_PAGE_FLIP * ioctl.
*/ #define DRM_CAP_PAGE_FLIP_TARGET 0x11 /** * DRM_CAP_CRTC_IN_VBLANK_EVENT * * If set to 1, the kernel supports reporting the CRTC ID in * &drm_event_vblank.crtc_id for the &DRM_EVENT_VBLANK and * &DRM_EVENT_FLIP_COMPLETE events. * * Starting kernel version 4.12, this capability is always set to 1.
*/ #define DRM_CAP_CRTC_IN_VBLANK_EVENT 0x12 /** * DRM_CAP_SYNCOBJ * * If set to 1, the driver supports sync objects. See :ref:`drm_sync_objects`.
*/ #define DRM_CAP_SYNCOBJ 0x13 /** * DRM_CAP_SYNCOBJ_TIMELINE * * If set to 1, the driver supports timeline operations on sync objects. See * :ref:`drm_sync_objects`.
*/ #define DRM_CAP_SYNCOBJ_TIMELINE 0x14 /** * DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP * * If set to 1, the driver supports &DRM_MODE_PAGE_FLIP_ASYNC for atomic * commits.
*/ #define DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP 0x15
/** * DRM_CLIENT_CAP_STEREO_3D * * If set to 1, the DRM core will expose the stereo 3D capabilities of the * monitor by advertising the supported 3D layouts in the flags of struct * drm_mode_modeinfo. See ``DRM_MODE_FLAG_3D_*``. * * This capability is always supported for all drivers starting from kernel * version 3.13.
*/ #define DRM_CLIENT_CAP_STEREO_3D 1
/** * DRM_CLIENT_CAP_UNIVERSAL_PLANES * * If set to 1, the DRM core will expose all planes (overlay, primary, and * cursor) to userspace. * * This capability has been introduced in kernel version 3.15. Starting from * kernel version 3.17, this capability is always supported for all drivers.
*/ #define DRM_CLIENT_CAP_UNIVERSAL_PLANES 2
/** * DRM_CLIENT_CAP_ATOMIC * * If set to 1, the DRM core will expose atomic properties to userspace. This * implicitly enables &DRM_CLIENT_CAP_UNIVERSAL_PLANES and * &DRM_CLIENT_CAP_ASPECT_RATIO. * * If the driver doesn't support atomic mode-setting, enabling this capability * will fail with -EOPNOTSUPP. * * This capability has been introduced in kernel version 4.0. Starting from * kernel version 4.2, this capability is always supported for atomic-capable * drivers.
*/ #define DRM_CLIENT_CAP_ATOMIC 3
/** * DRM_CLIENT_CAP_ASPECT_RATIO * * If set to 1, the DRM core will provide aspect ratio information in modes. * See ``DRM_MODE_FLAG_PIC_AR_*``. * * This capability is always supported for all drivers starting from kernel * version 4.18.
*/ #define DRM_CLIENT_CAP_ASPECT_RATIO 4
/** * DRM_CLIENT_CAP_WRITEBACK_CONNECTORS * * If set to 1, the DRM core will expose special connectors to be used for * writing back to memory the scene setup in the commit. The client must enable * &DRM_CLIENT_CAP_ATOMIC first. * * This capability is always supported for atomic-capable drivers starting from * kernel version 4.19.
*/ #define DRM_CLIENT_CAP_WRITEBACK_CONNECTORS 5
/** * DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT * * Drivers for para-virtualized hardware (e.g. vmwgfx, qxl, virtio and * virtualbox) have additional restrictions for cursor planes (thus * making cursor planes on those drivers not truly universal,) e.g. * they need cursor planes to act like one would expect from a mouse * cursor and have correctly set hotspot properties. * If this client cap is not set the DRM core will hide cursor plane on * those virtualized drivers because not setting it implies that the * client is not capable of dealing with those extra restictions. * Clients which do set cursor hotspot and treat the cursor plane * like a mouse cursor should set this property. * The client must enable &DRM_CLIENT_CAP_ATOMIC first. * * Setting this property on drivers which do not special case * cursor planes (i.e. non-virtualized drivers) will return * EOPNOTSUPP, which can be used by userspace to gauge * requirements of the hardware/drivers they're running on. * * This capability is always supported for atomic-capable virtualized * drivers starting from kernel version 6.6.
*/ #define DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT 6
#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0) #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1) #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE (1 << 2) /* wait for time point to become available */ #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_DEADLINE (1 << 3) /* set fence deadline to deadline_nsec */ struct drm_syncobj_wait {
__u64 handles; /* absolute timeout */
__s64 timeout_nsec;
__u32 count_handles;
__u32 flags;
__u32 first_signaled; /* only valid when not waiting all */
__u32 pad; /** * @deadline_nsec - fence deadline hint * * Deadline hint, in absolute CLOCK_MONOTONIC, to set on backing * fence(s) if the DRM_SYNCOBJ_WAIT_FLAGS_WAIT_DEADLINE flag is * set.
*/
__u64 deadline_nsec;
};
struct drm_syncobj_timeline_wait {
__u64 handles; /* wait on specific timeline point for every handles*/
__u64 points; /* absolute timeout */
__s64 timeout_nsec;
__u32 count_handles;
__u32 flags;
__u32 first_signaled; /* only valid when not waiting all */
__u32 pad; /** * @deadline_nsec - fence deadline hint * * Deadline hint, in absolute CLOCK_MONOTONIC, to set on backing * fence(s) if the DRM_SYNCOBJ_WAIT_FLAGS_WAIT_DEADLINE flag is * set.
*/
__u64 deadline_nsec;
};
/** * struct drm_syncobj_eventfd * @handle: syncobj handle. * @flags: Zero to wait for the point to be signalled, or * &DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE to wait for a fence to be * available for the point. * @point: syncobj timeline point (set to zero for binary syncobjs). * @fd: Existing eventfd to sent events to. * @pad: Must be zero. * * Register an eventfd to be signalled by a syncobj. The eventfd counter will * be incremented by one.
*/ struct drm_syncobj_eventfd {
__u32 handle;
__u32 flags;
__u64 point;
__s32 fd;
__u32 pad;
};
#define DRM_SYNCOBJ_QUERY_FLAGS_LAST_SUBMITTED (1 << 0) /* last available point on timeline syncobj */ struct drm_syncobj_timeline_array {
__u64 handles;
__u64 points;
__u32 count_handles;
__u32 flags;
};
/* Query current scanout sequence number */ struct drm_crtc_get_sequence {
__u32 crtc_id; /* requested crtc_id */
__u32 active; /* return: crtc output is active */
__u64 sequence; /* return: most recent vblank sequence */
__s64 sequence_ns; /* return: most recent time of first pixel out */
};
/* Queue event to be delivered at specified sequence. Time stamp marks * when the first pixel of the refresh cycle leaves the display engine * for the display
*/ #define DRM_CRTC_SEQUENCE_RELATIVE 0x00000001 /* sequence is relative to current */ #define DRM_CRTC_SEQUENCE_NEXT_ON_MISS 0x00000002 /* Use next sequence if we've missed */
struct drm_crtc_queue_sequence {
__u32 crtc_id;
__u32 flags;
__u64 sequence; /* on input, target sequence. on output, actual sequence */
__u64 user_data; /* user data passed to event */
};
#define DRM_IOCTL_VERSION DRM_IOWR(0x00, struct drm_version) #define DRM_IOCTL_GET_UNIQUE DRM_IOWR(0x01, struct drm_unique) #define DRM_IOCTL_GET_MAGIC DRM_IOR( 0x02, struct drm_auth) #define DRM_IOCTL_IRQ_BUSID DRM_IOWR(0x03, struct drm_irq_busid) #define DRM_IOCTL_GET_MAP DRM_IOWR(0x04, struct drm_map) #define DRM_IOCTL_GET_CLIENT DRM_IOWR(0x05, struct drm_client) #define DRM_IOCTL_GET_STATS DRM_IOR( 0x06, struct drm_stats) #define DRM_IOCTL_SET_VERSION DRM_IOWR(0x07, struct drm_set_version) #define DRM_IOCTL_MODESET_CTL DRM_IOW(0x08, struct drm_modeset_ctl) /** * DRM_IOCTL_GEM_CLOSE - Close a GEM handle. * * GEM handles are not reference-counted by the kernel. User-space is * responsible for managing their lifetime. For example, if user-space imports * the same memory object twice on the same DRM file description, the same GEM * handle is returned by both imports, and user-space needs to ensure * &DRM_IOCTL_GEM_CLOSE is performed once only. The same situation can happen * when a memory object is allocated, then exported and imported again on the * same DRM file description. The &DRM_IOCTL_MODE_GETFB2 IOCTL is an exception * and always returns fresh new GEM handles even if an existing GEM handle * already refers to the same memory object before the IOCTL is performed.
*/ #define DRM_IOCTL_GEM_CLOSE DRM_IOW (0x09, struct drm_gem_close) #define DRM_IOCTL_GEM_FLINK DRM_IOWR(0x0a, struct drm_gem_flink) #define DRM_IOCTL_GEM_OPEN DRM_IOWR(0x0b, struct drm_gem_open) #define DRM_IOCTL_GET_CAP DRM_IOWR(0x0c, struct drm_get_cap) #define DRM_IOCTL_SET_CLIENT_CAP DRM_IOW( 0x0d, struct drm_set_client_cap)
/** * DRM_IOCTL_PRIME_HANDLE_TO_FD - Convert a GEM handle to a DMA-BUF FD. * * User-space sets &drm_prime_handle.handle with the GEM handle to export and * &drm_prime_handle.flags, and gets back a DMA-BUF file descriptor in * &drm_prime_handle.fd. * * The export can fail for any driver-specific reason, e.g. because export is * not supported for this specific GEM handle (but might be for others). * * Support for exporting DMA-BUFs is advertised via &DRM_PRIME_CAP_EXPORT.
*/ #define DRM_IOCTL_PRIME_HANDLE_TO_FD DRM_IOWR(0x2d, struct drm_prime_handle) /** * DRM_IOCTL_PRIME_FD_TO_HANDLE - Convert a DMA-BUF FD to a GEM handle. * * User-space sets &drm_prime_handle.fd with a DMA-BUF file descriptor to * import, and gets back a GEM handle in &drm_prime_handle.handle. * &drm_prime_handle.flags is unused. * * If an existing GEM handle refers to the memory object backing the DMA-BUF, * that GEM handle is returned. Therefore user-space which needs to handle * arbitrary DMA-BUFs must have a user-space lookup data structure to manually * reference-count duplicated GEM handles. For more information see * &DRM_IOCTL_GEM_CLOSE. * * The import can fail for any driver-specific reason, e.g. because import is * only supported for DMA-BUFs allocated on this DRM device. * * Support for importing DMA-BUFs is advertised via &DRM_PRIME_CAP_IMPORT.
*/ #define DRM_IOCTL_PRIME_FD_TO_HANDLE DRM_IOWR(0x2e, struct drm_prime_handle)
#define DRM_IOCTL_MODE_GETPROPERTY DRM_IOWR(0xAA, struct drm_mode_get_property) #define DRM_IOCTL_MODE_SETPROPERTY DRM_IOWR(0xAB, struct drm_mode_connector_set_property) #define DRM_IOCTL_MODE_GETPROPBLOB DRM_IOWR(0xAC, struct drm_mode_get_blob) #define DRM_IOCTL_MODE_GETFB DRM_IOWR(0xAD, struct drm_mode_fb_cmd) #define DRM_IOCTL_MODE_ADDFB DRM_IOWR(0xAE, struct drm_mode_fb_cmd) /** * DRM_IOCTL_MODE_RMFB - Remove a framebuffer. * * This removes a framebuffer previously added via ADDFB/ADDFB2. The IOCTL * argument is a framebuffer object ID. * * Warning: removing a framebuffer currently in-use on an enabled plane will * disable that plane. The CRTC the plane is linked to may also be disabled * (depending on driver capabilities).
*/ #define DRM_IOCTL_MODE_RMFB DRM_IOWR(0xAF, unsignedint) #define DRM_IOCTL_MODE_PAGE_FLIP DRM_IOWR(0xB0, struct drm_mode_crtc_page_flip) #define DRM_IOCTL_MODE_DIRTYFB DRM_IOWR(0xB1, struct drm_mode_fb_dirty_cmd)
/** * DRM_IOCTL_MODE_CREATE_DUMB - Create a new dumb buffer object. * * KMS dumb buffers provide a very primitive way to allocate a buffer object * suitable for scanout and map it for software rendering. KMS dumb buffers are * not suitable for hardware-accelerated rendering nor video decoding. KMS dumb * buffers are not suitable to be displayed on any other device than the KMS * device where they were allocated from. Also see * :ref:`kms_dumb_buffer_objects`. * * The IOCTL argument is a struct drm_mode_create_dumb. * * User-space is expected to create a KMS dumb buffer via this IOCTL, then add * it as a KMS framebuffer via &DRM_IOCTL_MODE_ADDFB and map it via * &DRM_IOCTL_MODE_MAP_DUMB. * * &DRM_CAP_DUMB_BUFFER indicates whether this IOCTL is supported. * &DRM_CAP_DUMB_PREFERRED_DEPTH and &DRM_CAP_DUMB_PREFER_SHADOW indicate * driver preferences for dumb buffers.
*/ #define DRM_IOCTL_MODE_CREATE_DUMB DRM_IOWR(0xB2, struct drm_mode_create_dumb) #define DRM_IOCTL_MODE_MAP_DUMB DRM_IOWR(0xB3, struct drm_mode_map_dumb) #define DRM_IOCTL_MODE_DESTROY_DUMB DRM_IOWR(0xB4, struct drm_mode_destroy_dumb) #define DRM_IOCTL_MODE_GETPLANERESOURCES DRM_IOWR(0xB5, struct drm_mode_get_plane_res) #define DRM_IOCTL_MODE_GETPLANE DRM_IOWR(0xB6, struct drm_mode_get_plane) #define DRM_IOCTL_MODE_SETPLANE DRM_IOWR(0xB7, struct drm_mode_set_plane) #define DRM_IOCTL_MODE_ADDFB2 DRM_IOWR(0xB8, struct drm_mode_fb_cmd2) #define DRM_IOCTL_MODE_OBJ_GETPROPERTIES DRM_IOWR(0xB9, struct drm_mode_obj_get_properties) #define DRM_IOCTL_MODE_OBJ_SETPROPERTY DRM_IOWR(0xBA, struct drm_mode_obj_set_property) #define DRM_IOCTL_MODE_CURSOR2 DRM_IOWR(0xBB, struct drm_mode_cursor2) #define DRM_IOCTL_MODE_ATOMIC DRM_IOWR(0xBC, struct drm_mode_atomic) #define DRM_IOCTL_MODE_CREATEPROPBLOB DRM_IOWR(0xBD, struct drm_mode_create_blob) #define DRM_IOCTL_MODE_DESTROYPROPBLOB DRM_IOWR(0xBE, struct drm_mode_destroy_blob)
/** * DRM_IOCTL_MODE_GETFB2 - Get framebuffer metadata. * * This queries metadata about a framebuffer. User-space fills * &drm_mode_fb_cmd2.fb_id as the input, and the kernels fills the rest of the * struct as the output. * * If the client is DRM master or has &CAP_SYS_ADMIN, &drm_mode_fb_cmd2.handles * will be filled with GEM buffer handles. Fresh new GEM handles are always * returned, even if another GEM handle referring to the same memory object * already exists on the DRM file description. The caller is responsible for * removing the new handles, e.g. via the &DRM_IOCTL_GEM_CLOSE IOCTL. The same * new handle will be returned for multiple planes in case they use the same * memory object. Planes are valid until one has a zero handle -- this can be * used to compute the number of planes. * * Otherwise, &drm_mode_fb_cmd2.handles will be zeroed and planes are valid * until one has a zero &drm_mode_fb_cmd2.pitches. * * If the framebuffer has a format modifier, &DRM_MODE_FB_MODIFIERS will be set * in &drm_mode_fb_cmd2.flags and &drm_mode_fb_cmd2.modifier will contain the * modifier. Otherwise, user-space must ignore &drm_mode_fb_cmd2.modifier. * * To obtain DMA-BUF FDs for each plane without leaking GEM handles, user-space * can export each handle via &DRM_IOCTL_PRIME_HANDLE_TO_FD, then immediately * close each unique handle via &DRM_IOCTL_GEM_CLOSE, making sure to not * double-close handles which are specified multiple times in the array.
*/ #define DRM_IOCTL_MODE_GETFB2 DRM_IOWR(0xCE, struct drm_mode_fb_cmd2)
/** * DRM_IOCTL_MODE_CLOSEFB - Close a framebuffer. * * This closes a framebuffer previously added via ADDFB/ADDFB2. The IOCTL * argument is a framebuffer object ID. * * This IOCTL is similar to &DRM_IOCTL_MODE_RMFB, except it doesn't disable * planes and CRTCs. As long as the framebuffer is used by a plane, it's kept * alive. When the plane no longer uses the framebuffer (because the * framebuffer is replaced with another one, or the plane is disabled), the * framebuffer is cleaned up. * * This is useful to implement flicker-free transitions between two processes. * * Depending on the threat model, user-space may want to ensure that the * framebuffer doesn't expose any sensitive user information: closed * framebuffers attached to a plane can be read back by the next DRM master.
*/ #define DRM_IOCTL_MODE_CLOSEFB DRM_IOWR(0xD0, struct drm_mode_closefb)
/** * DRM_IOCTL_SET_CLIENT_NAME - Attach a name to a drm_file * * Having a name allows for easier tracking and debugging. * The length of the name (without null ending char) must be * <= DRM_CLIENT_NAME_MAX_LEN. * The call will fail if the name contains whitespaces or non-printable chars.
*/ #define DRM_IOCTL_SET_CLIENT_NAME DRM_IOWR(0xD1, struct drm_set_client_name)
/* * Device specific ioctls should only be in their respective headers * The device specific ioctl range is from 0x40 to 0x9f. * Generic IOCTLS restart at 0xA0. * * \sa drmCommandNone(), drmCommandRead(), drmCommandWrite(), and * drmCommandReadWrite().
*/ #define DRM_COMMAND_BASE 0x40 #define DRM_COMMAND_END 0xA0
/** * struct drm_event - Header for DRM events * @type: event type. * @length: total number of payload bytes (including header). * * This struct is a header for events written back to user-space on the DRM FD. * A read on the DRM FD will always only return complete events: e.g. if the * read buffer is 100 bytes large and there are two 64 byte events pending, * only one will be returned. * * Event types 0 - 0x7fffffff are generic DRM events, 0x80000000 and * up are chipset specific. Generic DRM events include &DRM_EVENT_VBLANK, * &DRM_EVENT_FLIP_COMPLETE and &DRM_EVENT_CRTC_SEQUENCE.
*/ struct drm_event {
__u32 type;
__u32 length;
};
/** * DRM_EVENT_VBLANK - vertical blanking event * * This event is sent in response to &DRM_IOCTL_WAIT_VBLANK with the * &_DRM_VBLANK_EVENT flag set. * * The event payload is a struct drm_event_vblank.
*/ #define DRM_EVENT_VBLANK 0x01 /** * DRM_EVENT_FLIP_COMPLETE - page-flip completion event * * This event is sent in response to an atomic commit or legacy page-flip with * the &DRM_MODE_PAGE_FLIP_EVENT flag set. * * The event payload is a struct drm_event_vblank.
*/ #define DRM_EVENT_FLIP_COMPLETE 0x02 /** * DRM_EVENT_CRTC_SEQUENCE - CRTC sequence event * * This event is sent in response to &DRM_IOCTL_CRTC_QUEUE_SEQUENCE. * * The event payload is a struct drm_event_crtc_sequence.
*/ #define DRM_EVENT_CRTC_SEQUENCE 0x03
struct drm_event_vblank { struct drm_event base;
__u64 user_data;
__u32 tv_sec;
__u32 tv_usec;
__u32 sequence;
__u32 crtc_id; /* 0 on older kernels that do not support this */
};
/* Event delivered at sequence. Time stamp marks when the first pixel * of the refresh cycle leaves the display engine for the display
*/ struct drm_event_crtc_sequence { struct drm_event base;
__u64 user_data;
__s64 time_ns;
__u64 sequence;
};
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