File manager

File manager - Edit - /usr/src/kernels/3.10.0-1160.15.2.el7.x86_64/include/drm/drm_drv.h

Back
/* * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * Copyright (c) 2009-2010, Code Aurora Forum. * Copyright 2016 Intel Corp. * * 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. / #ifndef _DRM_DRV_H_ #define _DRM_DRV_H_ #include <linux/list.h> #include <linux/irqreturn.h> #include <drm/drm_device.h> struct drm_file; struct drm_gem_object; struct drm_master; struct drm_minor; struct dma_buf_attachment; struct drm_display_mode; struct drm_mode_create_dumb; struct drm_printer; / driver capabilities and requirements mask / #define DRIVER_USE_AGP 0x1 #define DRIVER_LEGACY 0x2 #define DRIVER_PCI_DMA 0x8 #define DRIVER_SG 0x10 #define DRIVER_HAVE_DMA 0x20 #define DRIVER_HAVE_IRQ 0x40 #define DRIVER_IRQ_SHARED 0x80 #define DRIVER_GEM 0x1000 #define DRIVER_MODESET 0x2000 #define DRIVER_PRIME 0x4000 #define DRIVER_RENDER 0x8000 #define DRIVER_ATOMIC 0x10000 #define DRIVER_KMS_LEGACY_CONTEXT 0x20000 #define DRIVER_SYNCOBJ 0x40000 /* * struct drm_driver - DRM driver structure * * This structure represent the common code for a family of cards. There will * one drm_device for each card present in this family. It contains lots of * vfunc entries, and a pile of those probably should be moved to more * appropriate places like &drm_mode_config_funcs or into a new operations * structure for GEM drivers. / struct drm_driver { /* * @load: * * Backward-compatible driver callback to complete * initialization steps after the driver is registered. For * this reason, may suffer from race conditions and its use is * deprecated for new drivers. It is therefore only supported * for existing drivers not yet converted to the new scheme. * See drm_dev_init() and drm_dev_register() for proper and * race-free way to set up a &struct drm_device. * * This is deprecated, do not use! * * Returns: * * Zero on success, non-zero value on failure. / int (load) (struct drm_device , unsigned long flags); /* * @open: * * Driver callback when a new &struct drm_file is opened. Useful for * setting up driver-private data structures like buffer allocators, * execution contexts or similar things. Such driver-private resources * must be released again in @postclose. * * Since the display/modeset side of DRM can only be owned by exactly * one &struct drm_file (see &drm_file.is_master and &drm_device.master) * there should never be a need to set up any modeset related resources * in this callback. Doing so would be a driver design bug. * * Returns: * * 0 on success, a negative error code on failure, which will be * promoted to userspace as the result of the open() system call. / int (open) (struct drm_device , struct drm_file ); /** * @postclose: * * One of the driver callbacks when a new &struct drm_file is closed. * Useful for tearing down driver-private data structures allocated in * @open like buffer allocators, execution contexts or similar things. * * Since the display/modeset side of DRM can only be owned by exactly * one &struct drm_file (see &drm_file.is_master and &drm_device.master) * there should never be a need to tear down any modeset related * resources in this callback. Doing so would be a driver design bug. / void (postclose) (struct drm_device , struct drm_file ); /** * @lastclose: * * Called when the last &struct drm_file has been closed and there's * currently no userspace client for the &struct drm_device. * * Modern drivers should only use this to force-restore the fbdev * framebuffer using drm_fb_helper_restore_fbdev_mode_unlocked(). * Anything else would indicate there's something seriously wrong. * Modern drivers can also use this to execute delayed power switching * state changes, e.g. in conjunction with the :ref:`vga_switcheroo` * infrastructure. * * This is called after @postclose hook has been called. * * NOTE: * * All legacy drivers use this callback to de-initialize the hardware. * This is purely because of the shadow-attach model, where the DRM * kernel driver does not really own the hardware. Instead ownershipe is * handled with the help of userspace through an inheritedly racy dance * to set/unset the VT into raw mode. * * Legacy drivers initialize the hardware in the @firstopen callback, * which isn't even called for modern drivers. / void (lastclose) (struct drm_device ); /* * @unload: * * Reverse the effects of the driver load callback. Ideally, * the clean up performed by the driver should happen in the * reverse order of the initialization. Similarly to the load * hook, this handler is deprecated and its usage should be * dropped in favor of an open-coded teardown function at the * driver layer. See drm_dev_unregister() and drm_dev_put() * for the proper way to remove a &struct drm_device. * * The unload() hook is called right after unregistering * the device. * / void (unload) (struct drm_device ); /* * @release: * * Optional callback for destroying device data after the final * reference is released, i.e. the device is being destroyed. Drivers * using this callback are responsible for calling drm_dev_fini() * to finalize the device and then freeing the struct themselves. / void (release) (struct drm_device ); /* * @get_vblank_counter: * * Driver callback for fetching a raw hardware vblank counter for the * CRTC specified with the pipe argument. If a device doesn't have a * hardware counter, the driver can simply leave the hook as NULL. * The DRM core will account for missed vblank events while interrupts * where disabled based on system timestamps. * * Wraparound handling and loss of events due to modesetting is dealt * with in the DRM core code, as long as drivers call * drm_crtc_vblank_off() and drm_crtc_vblank_on() when disabling or * enabling a CRTC. * * This is deprecated and should not be used by new drivers. * Use &drm_crtc_funcs.get_vblank_counter instead. * * Returns: * * Raw vblank counter value. / u32 (get_vblank_counter) (struct drm_device dev, unsigned int pipe); /* * @enable_vblank: * * Enable vblank interrupts for the CRTC specified with the pipe * argument. * * This is deprecated and should not be used by new drivers. * Use &drm_crtc_funcs.enable_vblank instead. * * Returns: * * Zero on success, appropriate errno if the given @crtc's vblank * interrupt cannot be enabled. / int (enable_vblank) (struct drm_device dev, unsigned int pipe); /* * @disable_vblank: * * Disable vblank interrupts for the CRTC specified with the pipe * argument. * * This is deprecated and should not be used by new drivers. * Use &drm_crtc_funcs.disable_vblank instead. / void (disable_vblank) (struct drm_device dev, unsigned int pipe); /* * @get_scanout_position: * * Called by vblank timestamping code. * * Returns the current display scanout position from a crtc, and an * optional accurate ktime_get() timestamp of when position was * measured. Note that this is a helper callback which is only used if a * driver uses drm_calc_vbltimestamp_from_scanoutpos() for the * @get_vblank_timestamp callback. * * Parameters: * * dev: * DRM device. * pipe: * Id of the crtc to query. * in_vblank_irq: * True when called from drm_crtc_handle_vblank(). Some drivers * need to apply some workarounds for gpu-specific vblank irq quirks * if flag is set. * vpos: * Target location for current vertical scanout position. * hpos: * Target location for current horizontal scanout position. * stime: * Target location for timestamp taken immediately before * scanout position query. Can be NULL to skip timestamp. * etime: * Target location for timestamp taken immediately after * scanout position query. Can be NULL to skip timestamp. * mode: * Current display timings. * * Returns vpos as a positive number while in active scanout area. * Returns vpos as a negative number inside vblank, counting the number * of scanlines to go until end of vblank, e.g., -1 means "one scanline * until start of active scanout / end of vblank." * * Returns: * * True on success, false if a reliable scanout position counter could * not be read out. * * FIXME: * * Since this is a helper to implement @get_vblank_timestamp, we should * move it to &struct drm_crtc_helper_funcs, like all the other * helper-internal hooks. / bool (get_scanout_position) (struct drm_device dev, unsigned int pipe, bool in_vblank_irq, int vpos, int hpos, ktime_t stime, ktime_t etime, const struct drm_display_mode mode); /** * @get_vblank_timestamp: * * Called by drm_get_last_vbltimestamp(). Should return a precise * timestamp when the most recent VBLANK interval ended or will end. * * Specifically, the timestamp in @vblank_time should correspond as * closely as possible to the time when the first video scanline of * the video frame after the end of VBLANK will start scanning out, * the time immediately after end of the VBLANK interval. If the * @crtc is currently inside VBLANK, this will be a time in the future. * If the @crtc is currently scanning out a frame, this will be the * past start time of the current scanout. This is meant to adhere * to the OpenML OML_sync_control extension specification. * * Paramters: * * dev: * dev DRM device handle. * pipe: * crtc for which timestamp should be returned. * max_error: * Maximum allowable timestamp error in nanoseconds. * Implementation should strive to provide timestamp * with an error of at most max_error nanoseconds. * Returns true upper bound on error for timestamp. * vblank_time: * Target location for returned vblank timestamp. * in_vblank_irq: * True when called from drm_crtc_handle_vblank(). Some drivers * need to apply some workarounds for gpu-specific vblank irq quirks * if flag is set. * * Returns: * * True on success, false on failure, which means the core should * fallback to a simple timestamp taken in drm_crtc_handle_vblank(). * * FIXME: * * We should move this hook to &struct drm_crtc_funcs like all the other * vblank hooks. / bool (get_vblank_timestamp) (struct drm_device dev, unsigned int pipe, int max_error, ktime_t vblank_time, bool in_vblank_irq); /* * @irq_handler: * * Interrupt handler called when using drm_irq_install(). Not used by * drivers which implement their own interrupt handling. / irqreturn_t(irq_handler) (int irq, void arg); /* * @irq_preinstall: * * Optional callback used by drm_irq_install() which is called before * the interrupt handler is registered. This should be used to clear out * any pending interrupts (from e.g. firmware based drives) and reset * the interrupt handling registers. / void (irq_preinstall) (struct drm_device dev); /* * @irq_postinstall: * * Optional callback used by drm_irq_install() which is called after * the interrupt handler is registered. This should be used to enable * interrupt generation in the hardware. / int (irq_postinstall) (struct drm_device dev); /* * @irq_uninstall: * * Optional callback used by drm_irq_uninstall() which is called before * the interrupt handler is unregistered. This should be used to disable * interrupt generation in the hardware. / void (irq_uninstall) (struct drm_device dev); /* * @master_create: * * Called whenever a new master is created. Only used by vmwgfx. / int (master_create)(struct drm_device dev, struct drm_master master); /** * @master_destroy: * * Called whenever a master is destroyed. Only used by vmwgfx. / void (master_destroy)(struct drm_device dev, struct drm_master master); /** * @master_set: * * Called whenever the minor master is set. Only used by vmwgfx. / int (master_set)(struct drm_device dev, struct drm_file file_priv, bool from_open); /** * @master_drop: * * Called whenever the minor master is dropped. Only used by vmwgfx. / void (master_drop)(struct drm_device dev, struct drm_file file_priv); /** * @debugfs_init: * * Allows drivers to create driver-specific debugfs files. / int (debugfs_init)(struct drm_minor minor); /* * @gem_free_object: deconstructor for drm_gem_objects * * This is deprecated and should not be used by new drivers. Use * @gem_free_object_unlocked instead. / void (gem_free_object) (struct drm_gem_object obj); /* * @gem_free_object_unlocked: deconstructor for drm_gem_objects * * This is for drivers which are not encumbered with &drm_device.struct_mutex * legacy locking schemes. Use this hook instead of @gem_free_object. / void (gem_free_object_unlocked) (struct drm_gem_object obj); /* * @gem_open_object: * * Driver hook called upon gem handle creation / int (gem_open_object) (struct drm_gem_object , struct drm_file ); /** * @gem_close_object: * * Driver hook called upon gem handle release / void (gem_close_object) (struct drm_gem_object , struct drm_file ); /** * @gem_print_info: * * If driver subclasses struct &drm_gem_object, it can implement this * optional hook for printing additional driver specific info. * * drm_printf_indent() should be used in the callback passing it the * indent argument. * * This callback is called from drm_gem_print_info(). / void (gem_print_info)(struct drm_printer p, unsigned int indent, const struct drm_gem_object obj); /** * @gem_create_object: constructor for gem objects * * Hook for allocating the GEM object struct, for use by core * helpers. / struct drm_gem_object (gem_create_object)(struct drm_device dev, size_t size); /* prime: / /* * @prime_handle_to_fd: * * export handle -> fd (see drm_gem_prime_handle_to_fd() helper) / int (prime_handle_to_fd)(struct drm_device dev, struct drm_file file_priv, uint32_t handle, uint32_t flags, int prime_fd); /* * @prime_fd_to_handle: * * import fd -> handle (see drm_gem_prime_fd_to_handle() helper) / int (prime_fd_to_handle)(struct drm_device dev, struct drm_file file_priv, int prime_fd, uint32_t handle); /* * @gem_prime_export: * * export GEM -> dmabuf * * This defaults to drm_gem_prime_export() if not set. / struct dma_buf (gem_prime_export)(struct drm_device dev, struct drm_gem_object obj, int flags); /* * @gem_prime_import: * * import dmabuf -> GEM * * This defaults to drm_gem_prime_import() if not set. / struct drm_gem_object (gem_prime_import)(struct drm_device dev, struct dma_buf dma_buf); int (gem_prime_pin)(struct drm_gem_object obj); void (gem_prime_unpin)(struct drm_gem_object obj); struct reservation_object (gem_prime_res_obj)( struct drm_gem_object obj); struct sg_table (gem_prime_get_sg_table)(struct drm_gem_object obj); struct drm_gem_object (gem_prime_import_sg_table)( struct drm_device dev, struct dma_buf_attachment attach, struct sg_table sgt); void (gem_prime_vmap)(struct drm_gem_object obj); void (gem_prime_vunmap)(struct drm_gem_object obj, void vaddr); int (gem_prime_mmap)(struct drm_gem_object obj, struct vm_area_struct vma); /* * @dumb_create: * * This creates a new dumb buffer in the driver's backing storage manager (GEM, * TTM or something else entirely) and returns the resulting buffer handle. This * handle can then be wrapped up into a framebuffer modeset object. * * Note that userspace is not allowed to use such objects for render * acceleration - drivers must create their own private ioctls for such a use * case. * * Width, height and depth are specified in the &drm_mode_create_dumb * argument. The callback needs to fill the handle, pitch and size for * the created buffer. * * Called by the user via ioctl. * * Returns: * * Zero on success, negative errno on failure. / int (dumb_create)(struct drm_file file_priv, struct drm_device dev, struct drm_mode_create_dumb args); /* * @dumb_map_offset: * * Allocate an offset in the drm device node's address space to be able to * memory map a dumb buffer. * * The default implementation is drm_gem_create_mmap_offset(). GEM based * drivers must not overwrite this. * * Called by the user via ioctl. * * Returns: * * Zero on success, negative errno on failure. / int (dumb_map_offset)(struct drm_file file_priv, struct drm_device dev, uint32_t handle, uint64_t offset); /* * @dumb_destroy: * * This destroys the userspace handle for the given dumb backing storage buffer. * Since buffer objects must be reference counted in the kernel a buffer object * won't be immediately freed if a framebuffer modeset object still uses it. * * Called by the user via ioctl. * * The default implementation is drm_gem_dumb_destroy(). GEM based drivers * must not overwrite this. * * Returns: * * Zero on success, negative errno on failure. / int (dumb_destroy)(struct drm_file file_priv, struct drm_device dev, uint32_t handle); /** * @gem_vm_ops: Driver private ops for this object / const struct vm_operations_struct gem_vm_ops; /** @major: driver major number / int major; /* @minor: driver minor number / int minor; /* @patchlevel: driver patch level / int patchlevel; /* @name: driver name / char name; /** @desc: driver description / char desc; /** @date: driver date / char date; /** @driver_features: driver features / u32 driver_features; /* * @ioctls: * * Array of driver-private IOCTL description entries. See the chapter on * :ref:`IOCTL support in the userland interfaces * chapter<drm_driver_ioctl>` for the full details. / const struct drm_ioctl_desc ioctls; /** @num_ioctls: Number of entries in @ioctls. / int num_ioctls; /* * @fops: * * File operations for the DRM device node. See the discussion in * :ref:`file operations<drm_driver_fops>` for in-depth coverage and * some examples. / const struct file_operations fops; /* Everything below here is for legacy driver, never use! / / private: / / List of devices hanging off this driver with stealth attach. / struct list_head legacy_dev_list; int (firstopen) (struct drm_device ); void (preclose) (struct drm_device , struct drm_file file_priv); int (dma_ioctl) (struct drm_device dev, void data, struct drm_file file_priv); int (dma_quiescent) (struct drm_device ); int (context_dtor) (struct drm_device dev, int context); int dev_priv_size; }; extern unsigned int drm_debug; int drm_dev_init(struct drm_device dev, struct drm_driver driver, struct device parent); void drm_dev_fini(struct drm_device dev); struct drm_device drm_dev_alloc(struct drm_driver driver, struct device parent); int drm_dev_register(struct drm_device dev, unsigned long flags); void drm_dev_unregister(struct drm_device dev); void drm_dev_get(struct drm_device dev); void drm_dev_put(struct drm_device dev); void drm_put_dev(struct drm_device dev); bool drm_dev_enter(struct drm_device dev, int idx); void drm_dev_exit(int idx); void drm_dev_unplug(struct drm_device dev); /* * drm_dev_is_unplugged - is a DRM device unplugged * @dev: DRM device * * This function can be called to check whether a hotpluggable is unplugged. * Unplugging itself is singalled through drm_dev_unplug(). If a device is * unplugged, these two functions guarantee that any store before calling * drm_dev_unplug() is visible to callers of this function after it completes / static inline bool drm_dev_is_unplugged(struct drm_device dev) { int idx; if (drm_dev_enter(dev, &idx)) { drm_dev_exit(idx); return false; } return true; } /** * drm_core_check_feature - check driver feature flags * @dev: DRM device to check * @feature: feature flag * * This checks @dev for driver features, see &drm_driver.driver_features, * &drm_device.driver_features, and the various DRIVER_\* flags. * * Returns true if the @feature is supported, false otherwise. / static inline bool drm_core_check_feature(struct drm_device dev, u32 feature) { return dev->driver->driver_features & dev->driver_features & feature; } /** * drm_drv_uses_atomic_modeset - check if the driver implements * atomic_commit() * @dev: DRM device * * This check is useful if drivers do not have DRIVER_ATOMIC set but * have atomic modesetting internally implemented. / static inline bool drm_drv_uses_atomic_modeset(struct drm_device dev) { return drm_core_check_feature(dev, DRIVER_ATOMIC) \|\| (dev->mode_config.funcs && dev->mode_config.funcs->atomic_commit != NULL); } int drm_dev_set_unique(struct drm_device dev, const char name); #endif

| ver. 1.4 | Github | . | PHP 7.3.33 | Generation time: 0.01 | proxy | phpinfo | Settings