/* * Internal Header for the Direct Rendering Manager * * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * Copyright (c) 2009-2010, Code Aurora Forum. * All rights reserved. * * Author: Rickard E. (Rik) Faith <faith@valinux.com> * Author: Gareth Hughes <gareth@valinux.com> * * 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_P_H_ #define _DRM_P_H_ #include <linux/agp_backend.h> #include <linux/cdev.h> #include <linux/dma-mapping.h> #include <linux/file.h> #include <linux/fs.h> #include <linux/highmem.h> #include <linux/idr.h> #include <linux/init.h> #include <linux/io.h> #include <linux/jiffies.h> #include <linux/kernel.h> #include <linux/kref.h> #include <linux/miscdevice.h> #include <linux/mm.h> #include <linux/mutex.h> #include <linux/pci.h> #include <linux/platform_device.h> #include <linux/poll.h> #include <linux/ratelimit.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/vmalloc.h> #include <linux/workqueue.h> #include <asm/mman.h> #include <asm/pgalloc.h> #include <asm/uaccess.h> #include <uapi/drm/drm.h> #include <uapi/drm/drm_mode.h> #include <drm/drm_agpsupport.h> #include <drm/drm_crtc.h> #include <drm/drm_global.h> #include <drm/drm_hashtab.h> #include <drm/drm_mem_util.h> #include <drm/drm_mm.h> #include <drm/drm_os_linux.h> #include <drm/drm_sarea.h> #include <drm/drm_vma_manager.h> struct module; struct drm_file; struct drm_device; struct drm_agp_head; struct drm_local_map; struct drm_device_dma; struct drm_dma_handle; struct drm_gem_object; struct device_node; struct videomode; struct reservation_object; struct dma_buf_attachment; /* * 4 debug categories are defined: * * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... * This is the category used by the DRM_DEBUG() macro. * * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... * This is the category used by the DRM_DEBUG_DRIVER() macro. * * KMS: used in the modesetting code. * This is the category used by the DRM_DEBUG_KMS() macro. * * PRIME: used in the prime code. * This is the category used by the DRM_DEBUG_PRIME() macro. * * ATOMIC: used in the atomic code. * This is the category used by the DRM_DEBUG_ATOMIC() macro. * * VBL: used for verbose debug message in the vblank code * This is the category used by the DRM_DEBUG_VBL() macro. * * Enabling verbose debug messages is done through the drm.debug parameter, * each category being enabled by a bit. * * drm.debug=0x1 will enable CORE messages * drm.debug=0x2 will enable DRIVER messages * drm.debug=0x3 will enable CORE and DRIVER messages * ... * drm.debug=0x3f will enable all messages * * An interesting feature is that it's possible to enable verbose logging at * run-time by echoing the debug value in its sysfs node: * # echo 0xf > /sys/module/drm/parameters/debug */ #define DRM_UT_CORE 0x01 #define DRM_UT_DRIVER 0x02 #define DRM_UT_KMS 0x04 #define DRM_UT_PRIME 0x08 #define DRM_UT_ATOMIC 0x10 #define DRM_UT_VBL 0x20 extern __printf(2, 3) void drm_ut_debug_printk(const char *function_name, const char *format, ...); extern __printf(1, 2) void drm_err(const char *format, ...); /***********************************************************************/ /** \name DRM template customization defaults */ /*@{*/ /* driver capabilities and requirements mask */ #define DRIVER_USE_AGP 0x1 #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 /***********************************************************************/ /** \name Macros to make printk easier */ /*@{*/ /** * Error output. * * \param fmt printf() like format string. * \param arg arguments */ #define DRM_ERROR(fmt, ...) \ drm_err(fmt, ##__VA_ARGS__) /** * Rate limited error output. Like DRM_ERROR() but won't flood the log. * * \param fmt printf() like format string. * \param arg arguments */ #define DRM_ERROR_RATELIMITED(fmt, ...) \ ({ \ static DEFINE_RATELIMIT_STATE(_rs, \ DEFAULT_RATELIMIT_INTERVAL, \ DEFAULT_RATELIMIT_BURST); \ \ if (__ratelimit(&_rs)) \ drm_err(fmt, ##__VA_ARGS__); \ }) #define DRM_INFO(fmt, ...) \ printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) #define DRM_INFO_ONCE(fmt, ...) \ printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) /** * Debug output. * * \param fmt printf() like format string. * \param arg arguments */ #define DRM_DEBUG(fmt, args...) \ do { \ if (unlikely(drm_debug & DRM_UT_CORE)) \ drm_ut_debug_printk(__func__, fmt, ##args); \ } while (0) #define DRM_DEBUG_DRIVER(fmt, args...) \ do { \ if (unlikely(drm_debug & DRM_UT_DRIVER)) \ drm_ut_debug_printk(__func__, fmt, ##args); \ } while (0) #define DRM_DEBUG_KMS(fmt, args...) \ do { \ if (unlikely(drm_debug & DRM_UT_KMS)) \ drm_ut_debug_printk(__func__, fmt, ##args); \ } while (0) #define DRM_DEBUG_PRIME(fmt, args...) \ do { \ if (unlikely(drm_debug & DRM_UT_PRIME)) \ drm_ut_debug_printk(__func__, fmt, ##args); \ } while (0) #define DRM_DEBUG_ATOMIC(fmt, args...) \ do { \ if (unlikely(drm_debug & DRM_UT_ATOMIC)) \ drm_ut_debug_printk(__func__, fmt, ##args); \ } while (0) #define DRM_DEBUG_VBL(fmt, args...) \ do { \ if (unlikely(drm_debug & DRM_UT_VBL)) \ drm_ut_debug_printk(__func__, fmt, ##args); \ } while (0) /*@}*/ /***********************************************************************/ /** \name Internal types and structures */ /*@{*/ #define DRM_IF_VERSION(maj, min) (maj << 16 | min) /** * Ioctl function type. * * \param inode device inode. * \param file_priv DRM file private pointer. * \param cmd command. * \param arg argument. */ typedef int drm_ioctl_t(struct drm_device *dev, void *data, struct drm_file *file_priv); typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, unsigned long arg); #define DRM_IOCTL_NR(n) _IOC_NR(n) #define DRM_MAJOR 226 #define DRM_AUTH 0x1 #define DRM_MASTER 0x2 #define DRM_ROOT_ONLY 0x4 #define DRM_CONTROL_ALLOW 0x8 #define DRM_UNLOCKED 0x10 #define DRM_RENDER_ALLOW 0x20 struct drm_ioctl_desc { unsigned int cmd; int flags; drm_ioctl_t *func; const char *name; }; /** * Creates a driver or general drm_ioctl_desc array entry for the given * ioctl, for use by drm_ioctl(). */ #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \ .cmd = DRM_IOCTL_##ioctl, \ .func = _func, \ .flags = _flags, \ .name = #ioctl \ } /* Event queued up for userspace to read */ struct drm_pending_event { struct drm_event *event; struct list_head link; struct drm_file *file_priv; pid_t pid; /* pid of requester, no guarantee it's valid by the time we deliver the event, for tracing only */ void (*destroy)(struct drm_pending_event *event); }; /* initial implementaton using a linked list - todo hashtab */ struct drm_prime_file_private { struct list_head head; struct mutex lock; }; /** File private data */ struct drm_file { unsigned authenticated :1; /* Whether we're master for a minor. Protected by master_mutex */ unsigned is_master :1; /* true when the client has asked us to expose stereo 3D mode flags */ unsigned stereo_allowed :1; /* * true if client understands CRTC primary planes and cursor planes * in the plane list */ unsigned universal_planes:1; /* true if client understands atomic properties */ unsigned atomic:1; /* * This client is allowed to gain master privileges for @master. * Protected by struct drm_device::master_mutex. */ unsigned allowed_master:1; struct pid *pid; kuid_t uid; drm_magic_t magic; struct list_head lhead; struct drm_minor *minor; unsigned long lock_count; /** Mapping of mm object handles to object pointers. */ struct idr object_idr; /** Lock for synchronization of access to object_idr. */ spinlock_t table_lock; struct file *filp; void *driver_priv; struct drm_master *master; /* master this node is currently associated with N.B. not always minor->master */ /** * fbs - List of framebuffers associated with this file. * * Protected by fbs_lock. Note that the fbs list holds a reference on * the fb object to prevent it from untimely disappearing. */ struct list_head fbs; struct mutex fbs_lock; /** User-created blob properties; this retains a reference on the * property. */ struct list_head blobs; wait_queue_head_t event_wait; struct list_head event_list; int event_space; struct drm_prime_file_private prime; }; /** * Lock data. */ struct drm_lock_data { struct drm_hw_lock *hw_lock; /**< Hardware lock */ /** Private of lock holder's file (NULL=kernel) */ struct drm_file *file_priv; wait_queue_head_t lock_queue; /**< Queue of blocked processes */ unsigned long lock_time; /**< Time of last lock in jiffies */ spinlock_t spinlock; uint32_t kernel_waiters; uint32_t user_waiters; int idle_has_lock; }; /** * struct drm_master - drm master structure * * @refcount: Refcount for this master object. * @minor: Link back to minor char device we are master for. Immutable. * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. * @unique_len: Length of unique field. Protected by drm_global_mutex. * @magic_map: Map of used authentication tokens. Protected by struct_mutex. * @lock: DRI lock information. * @driver_priv: Pointer to driver-private information. */ struct drm_master { struct kref refcount; struct drm_minor *minor; char *unique; int unique_len; struct idr magic_map; struct drm_lock_data lock; void *driver_priv; }; /* Size of ringbuffer for vblank timestamps. Just double-buffer * in initial implementation. */ #define DRM_VBLANKTIME_RBSIZE 2 /* Flags and return codes for get_vblank_timestamp() driver function. */ #define DRM_CALLED_FROM_VBLIRQ 1 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) /* get_scanout_position() return flags */ #define DRM_SCANOUTPOS_VALID (1 << 0) #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) #define DRM_SCANOUTPOS_ACCURATE (1 << 2) /** * 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 */ struct drm_driver { int (*load) (struct drm_device *, unsigned long flags); int (*firstopen) (struct drm_device *); int (*open) (struct drm_device *, struct drm_file *); void (*preclose) (struct drm_device *, struct drm_file *file_priv); void (*postclose) (struct drm_device *, struct drm_file *); void (*lastclose) (struct drm_device *); int (*unload) (struct drm_device *); int (*suspend) (struct drm_device *, pm_message_t state); int (*resume) (struct drm_device *); 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 (*set_busid)(struct drm_device *dev, struct drm_master *master); /** * get_vblank_counter - get raw hardware vblank counter * @dev: DRM device * @pipe: counter to fetch * * Driver callback for fetching a raw hardware vblank counter for @crtc. * If a device doesn't have a hardware counter, the driver can simply * return the value of drm_vblank_count. 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. * * RETURNS * Raw vblank counter value. */ u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe); /** * enable_vblank - enable vblank interrupt events * @dev: DRM device * @pipe: which irq to enable * * Enable vblank interrupts for @crtc. If the device doesn't have * a hardware vblank counter, this routine should be a no-op, since * interrupts will have to stay on to keep the count accurate. * * 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 interrupt events * @dev: DRM device * @pipe: which irq to enable * * Disable vblank interrupts for @crtc. If the device doesn't have * a hardware vblank counter, this routine should be a no-op, since * interrupts will have to stay on to keep the count accurate. */ void (*disable_vblank) (struct drm_device *dev, unsigned int pipe); /** * Called by \c drm_device_is_agp. Typically used to determine if a * card is really attached to AGP or not. * * \param dev DRM device handle * * \returns * One of three values is returned depending on whether or not the * card is absolutely \b not AGP (return of 0), absolutely \b is AGP * (return of 1), or may or may not be AGP (return of 2). */ int (*device_is_agp) (struct drm_device *dev); /** * Called by vblank timestamping code. * * Return the current display scanout position from a crtc, and an * optional accurate ktime_get timestamp of when position was measured. * * \param dev DRM device. * \param pipe Id of the crtc to query. * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). * \param *vpos Target location for current vertical scanout position. * \param *hpos Target location for current horizontal scanout position. * \param *stime Target location for timestamp taken immediately before * scanout position query. Can be NULL to skip timestamp. * \param *etime Target location for timestamp taken immediately after * scanout position query. Can be NULL to skip timestamp. * \param 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." * * \return Flags, or'ed together as follows: * * DRM_SCANOUTPOS_VALID = Query successful. * DRM_SCANOUTPOS_INVBL = Inside vblank. * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of * this flag means that returned position may be offset by a constant * but unknown small number of scanlines wrt. real scanout position. * */ int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe, unsigned int flags, int *vpos, int *hpos, ktime_t *stime, ktime_t *etime, const struct drm_display_mode *mode); /** * Called by \c 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. * * \param dev dev DRM device handle. * \param pipe crtc for which timestamp should be returned. * \param *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. * \param *vblank_time Target location for returned vblank timestamp. * \param flags 0 = Defaults, no special treatment needed. * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank * irq handler. Some drivers need to apply some workarounds * for gpu-specific vblank irq quirks if flag is set. * * \returns * Zero if timestamping isn't supported in current display mode or a * negative number on failure. A positive status code on success, * which describes how the vblank_time timestamp was computed. */ int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe, int *max_error, struct timeval *vblank_time, unsigned flags); /* these have to be filled in */ irqreturn_t(*irq_handler) (int irq, void *arg); void (*irq_preinstall) (struct drm_device *dev); int (*irq_postinstall) (struct drm_device *dev); void (*irq_uninstall) (struct drm_device *dev); /* Master routines */ int (*master_create)(struct drm_device *dev, struct drm_master *master); void (*master_destroy)(struct drm_device *dev, struct drm_master *master); /** * master_set is called whenever the minor master is set. * master_drop is called whenever the minor master is dropped. */ int (*master_set)(struct drm_device *dev, struct drm_file *file_priv, bool from_open); void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv, bool from_release); int (*debugfs_init)(struct drm_minor *minor); void (*debugfs_cleanup)(struct drm_minor *minor); /** * Driver-specific constructor for drm_gem_objects, to set up * obj->driver_private. * * Returns 0 on success. */ void (*gem_free_object) (struct drm_gem_object *obj); int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); /* prime: */ /* 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); /* 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); /* export GEM -> dmabuf */ struct dma_buf * (*gem_prime_export)(struct drm_device *dev, struct drm_gem_object *obj, int flags); /* import dmabuf -> GEM */ struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, struct dma_buf *dma_buf); /* low-level interface used by drm_gem_prime_{import,export} */ 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); /* vga arb irq handler */ void (*vgaarb_irq)(struct drm_device *dev, bool state); /* dumb alloc support */ int (*dumb_create)(struct drm_file *file_priv, struct drm_device *dev, struct drm_mode_create_dumb *args); int (*dumb_map_offset)(struct drm_file *file_priv, struct drm_device *dev, uint32_t handle, uint64_t *offset); int (*dumb_destroy)(struct drm_file *file_priv, struct drm_device *dev, uint32_t handle); /* Driver private ops for this object */ const struct vm_operations_struct *gem_vm_ops; int major; int minor; int patchlevel; char *name; char *desc; char *date; u32 driver_features; int dev_priv_size; const struct drm_ioctl_desc *ioctls; int num_ioctls; const struct file_operations *fops; /* List of devices hanging off this driver with stealth attach. */ struct list_head legacy_dev_list; }; enum drm_minor_type { DRM_MINOR_LEGACY, DRM_MINOR_CONTROL, DRM_MINOR_RENDER, DRM_MINOR_CNT, }; /** * Info file list entry. This structure represents a debugfs or proc file to * be created by the drm core */ struct drm_info_list { const char *name; /** file name */ int (*show)(struct seq_file*, void*); /** show callback */ u32 driver_features; /**< Required driver features for this entry */ void *data; }; /** * debugfs node structure. This structure represents a debugfs file. */ struct drm_info_node { struct list_head list; struct drm_minor *minor; const struct drm_info_list *info_ent; struct dentry *dent; }; /** * DRM minor structure. This structure represents a drm minor number. */ struct drm_minor { int index; /**< Minor device number */ int type; /**< Control or render */ struct device *kdev; /**< Linux device */ struct drm_device *dev; struct dentry *debugfs_root; struct list_head debugfs_list; struct mutex debugfs_lock; /* Protects debugfs_list. */ /* currently active master for this node. Protected by master_mutex */ struct drm_master *master; }; struct drm_pending_vblank_event { struct drm_pending_event base; unsigned int pipe; struct drm_event_vblank event; }; struct drm_vblank_crtc { struct drm_device *dev; /* pointer to the drm_device */ wait_queue_head_t queue; /**< VBLANK wait queue */ struct timer_list disable_timer; /* delayed disable timer */ /* vblank counter, protected by dev->vblank_time_lock for writes */ u32 count; /* vblank timestamps, protected by dev->vblank_time_lock for writes */ struct timeval time[DRM_VBLANKTIME_RBSIZE]; atomic_t refcount; /* number of users of vblank interruptsper crtc */ u32 last; /* protected by dev->vbl_lock, used */ /* for wraparound handling */ u32 last_wait; /* Last vblank seqno waited per CRTC */ unsigned int inmodeset; /* Display driver is setting mode */ unsigned int pipe; /* crtc index */ int framedur_ns; /* frame/field duration in ns */ int linedur_ns; /* line duration in ns */ bool enabled; /* so we don't call enable more than once per disable */ }; /** * DRM device structure. This structure represent a complete card that * may contain multiple heads. */ struct drm_device { struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */ int if_version; /**< Highest interface version set */ /** \name Lifetime Management */ /*@{ */ struct kref ref; /**< Object ref-count */ struct device *dev; /**< Device structure of bus-device */ struct drm_driver *driver; /**< DRM driver managing the device */ void *dev_private; /**< DRM driver private data */ struct drm_minor *control; /**< Control node */ struct drm_minor *primary; /**< Primary node */ struct drm_minor *render; /**< Render node */ atomic_t unplugged; /**< Flag whether dev is dead */ struct inode *anon_inode; /**< inode for private address-space */ char *unique; /**< unique name of the device */ /*@} */ /** \name Locks */ /*@{ */ struct mutex struct_mutex; /**< For others */ struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */ /*@} */ /** \name Usage Counters */ /*@{ */ int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */ int buf_use; /**< Buffers in use -- cannot alloc */ atomic_t buf_alloc; /**< Buffer allocation in progress */ /*@} */ struct list_head filelist; /** \name Memory management */ /*@{ */ struct list_head maplist; /**< Linked list of regions */ struct drm_open_hash map_hash; /**< User token hash table for maps */ /** \name Context handle management */ /*@{ */ struct list_head ctxlist; /**< Linked list of context handles */ struct mutex ctxlist_mutex; /**< For ctxlist */ struct idr ctx_idr; struct list_head vmalist; /**< List of vmas (for debugging) */ /*@} */ /** \name DMA support */ /*@{ */ struct drm_device_dma *dma; /**< Optional pointer for DMA support */ /*@} */ /** \name Context support */ /*@{ */ __volatile__ long context_flag; /**< Context swapping flag */ int last_context; /**< Last current context */ /*@} */ /** \name VBLANK IRQ support */ /*@{ */ bool irq_enabled; int irq; /* * At load time, disabling the vblank interrupt won't be allowed since * old clients may not call the modeset ioctl and therefore misbehave. * Once the modeset ioctl *has* been called though, we can safely * disable them when unused. */ bool vblank_disable_allowed; /* * If true, vblank interrupt will be disabled immediately when the * refcount drops to zero, as opposed to via the vblank disable * timer. * This can be set to true it the hardware has a working vblank * counter and the driver uses drm_vblank_on() and drm_vblank_off() * appropriately. */ bool vblank_disable_immediate; /* array of size num_crtcs */ struct drm_vblank_crtc *vblank; spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ spinlock_t vbl_lock; u32 max_vblank_count; /**< size of vblank counter register */ /** * List of events */ struct list_head vblank_event_list; spinlock_t event_lock; /*@} */ struct drm_agp_head *agp; /**< AGP data */ struct pci_dev *pdev; /**< PCI device structure */ #ifdef __alpha__ struct pci_controller *hose; #endif struct platform_device *platformdev; /**< Platform device struture */ struct virtio_device *virtdev; struct drm_sg_mem *sg; /**< Scatter gather memory */ unsigned int num_crtcs; /**< Number of CRTCs on this device */ struct { int context; struct drm_hw_lock *lock; } sigdata; struct drm_local_map *agp_buffer_map; unsigned int agp_buffer_token; struct drm_mode_config mode_config; /**< Current mode config */ /** \name GEM information */ /*@{ */ struct mutex object_name_lock; struct idr object_name_idr; struct drm_vma_offset_manager *vma_offset_manager; /*@} */ int switch_power_state; }; #define DRM_SWITCH_POWER_ON 0 #define DRM_SWITCH_POWER_OFF 1 #define DRM_SWITCH_POWER_CHANGING 2 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 static __inline__ int drm_core_check_feature(struct drm_device *dev, int feature) { return ((dev->driver->driver_features & feature) ? 1 : 0); } static inline void drm_device_set_unplugged(struct drm_device *dev) { smp_wmb(); atomic_set(&dev->unplugged, 1); } static inline int drm_device_is_unplugged(struct drm_device *dev) { int ret = atomic_read(&dev->unplugged); smp_rmb(); return ret; } static inline bool drm_is_render_client(const struct drm_file *file_priv) { return file_priv->minor->type == DRM_MINOR_RENDER; } static inline bool drm_is_control_client(const struct drm_file *file_priv) { return file_priv->minor->type == DRM_MINOR_CONTROL; } static inline bool drm_is_primary_client(const struct drm_file *file_priv) { return file_priv->minor->type == DRM_MINOR_LEGACY; } /******************************************************************/ /** \name Internal function definitions */ /*@{*/ /* Driver support (drm_drv.h) */ extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv); extern long drm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); extern long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); /* Device support (drm_fops.h) */ extern int drm_open(struct inode *inode, struct file *filp); extern ssize_t drm_read(struct file *filp, char __user *buffer, size_t count, loff_t *offset); extern int drm_release(struct inode *inode, struct file *filp); extern int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv); /* Mapping support (drm_vm.h) */ extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait); /* Misc. IOCTL support (drm_ioctl.c) */ int drm_noop(struct drm_device *dev, void *data, struct drm_file *file_priv); int drm_invalid_op(struct drm_device *dev, void *data, struct drm_file *file_priv); /* Cache management (drm_cache.c) */ void drm_clflush_pages(struct page *pages[], unsigned long num_pages); void drm_clflush_sg(struct sg_table *st); void drm_clflush_virt_range(void *addr, unsigned long length); /* * These are exported to drivers so that they can implement fencing using * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. */ /* IRQ support (drm_irq.h) */ extern int drm_irq_install(struct drm_device *dev, int irq); extern int drm_irq_uninstall(struct drm_device *dev); extern int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs); extern int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *filp); extern u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe); extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc); extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe, struct timeval *vblanktime); extern u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc, struct timeval *vblanktime); extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe, struct drm_pending_vblank_event *e); extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc, struct drm_pending_vblank_event *e); extern void drm_arm_vblank_event(struct drm_device *dev, unsigned int pipe, struct drm_pending_vblank_event *e); extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc, struct drm_pending_vblank_event *e); extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe); extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc); extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe); extern void drm_vblank_put(struct drm_device *dev, unsigned int pipe); extern int drm_crtc_vblank_get(struct drm_crtc *crtc); extern void drm_crtc_vblank_put(struct drm_crtc *crtc); extern void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe); extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); extern void drm_vblank_off(struct drm_device *dev, unsigned int pipe); extern void drm_vblank_on(struct drm_device *dev, unsigned int pipe); extern void drm_crtc_vblank_off(struct drm_crtc *crtc); extern void drm_crtc_vblank_reset(struct drm_crtc *crtc); extern void drm_crtc_vblank_on(struct drm_crtc *crtc); extern void drm_vblank_cleanup(struct drm_device *dev); extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe); extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, unsigned int pipe, int *max_error, struct timeval *vblank_time, unsigned flags, const struct drm_display_mode *mode); extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, const struct drm_display_mode *mode); /** * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC * @crtc: which CRTC's vblank waitqueue to retrieve * * This function returns a pointer to the vblank waitqueue for the CRTC. * Drivers can use this to implement vblank waits using wait_event() & co. */ static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) { return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; } /* Modesetting support */ extern void drm_vblank_pre_modeset(struct drm_device *dev, unsigned int pipe); extern void drm_vblank_post_modeset(struct drm_device *dev, unsigned int pipe); /* Stub support (drm_stub.h) */ extern struct drm_master *drm_master_get(struct drm_master *master); extern void drm_master_put(struct drm_master **master); extern void drm_put_dev(struct drm_device *dev); extern void drm_unplug_dev(struct drm_device *dev); extern unsigned int drm_debug; extern bool drm_atomic; /* Debugfs support */ #if defined(CONFIG_DEBUG_FS) extern int drm_debugfs_create_files(const struct drm_info_list *files, int count, struct dentry *root, struct drm_minor *minor); extern int drm_debugfs_remove_files(const struct drm_info_list *files, int count, struct drm_minor *minor); #else static inline int drm_debugfs_create_files(const struct drm_info_list *files, int count, struct dentry *root, struct drm_minor *minor) { return 0; } static inline int drm_debugfs_remove_files(const struct drm_info_list *files, int count, struct drm_minor *minor) { return 0; } #endif extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev, struct drm_gem_object *obj, int flags); extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, struct drm_file *file_priv, uint32_t handle, uint32_t flags, int *prime_fd); extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf); extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, struct drm_file *file_priv, int prime_fd, uint32_t *handle); extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf); extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages, dma_addr_t *addrs, int max_pages); extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages); extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, size_t align); extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah); /* sysfs support (drm_sysfs.c) */ extern void drm_sysfs_hotplug_event(struct drm_device *dev); struct drm_device *drm_dev_alloc(struct drm_driver *driver, struct device *parent); void drm_dev_ref(struct drm_device *dev); void drm_dev_unref(struct drm_device *dev); int drm_dev_register(struct drm_device *dev, unsigned long flags); void drm_dev_unregister(struct drm_device *dev); int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); struct drm_minor *drm_minor_acquire(unsigned int minor_id); void drm_minor_release(struct drm_minor *minor); /*@}*/ /* PCI section */ static __inline__ int drm_pci_device_is_agp(struct drm_device *dev) { if (dev->driver->device_is_agp != NULL) { int err = (*dev->driver->device_is_agp) (dev); if (err != 2) { return err; } } return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP); } void drm_pci_agp_destroy(struct drm_device *dev); extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver); extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver); #ifdef CONFIG_PCI extern int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, struct drm_driver *driver); extern int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master); #else static inline int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, struct drm_driver *driver) { return -ENOSYS; } static inline int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master) { return -ENOSYS; } #endif #define DRM_PCIE_SPEED_25 1 #define DRM_PCIE_SPEED_50 2 #define DRM_PCIE_SPEED_80 4 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); /* platform section */ extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device); extern int drm_platform_set_busid(struct drm_device *d, struct drm_master *m); /* returns true if currently okay to sleep */ static __inline__ bool drm_can_sleep(void) { if (in_atomic() || in_dbg_master() || irqs_disabled()) return false; return true; } #endif