| /* |
| * 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. |
| * |
| * 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=0xf 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 |
| |
| 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) |
| |
| /*@}*/ |
| |
| /***********************************************************************/ |
| /** \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; |
| |
| 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 |
| * @crtc: 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, int crtc); |
| |
| /** |
| * enable_vblank - enable vblank interrupt events |
| * @dev: DRM device |
| * @crtc: 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, int crtc); |
| |
| /** |
| * disable_vblank - disable vblank interrupt events |
| * @dev: DRM device |
| * @crtc: 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, int crtc); |
| |
| /** |
| * 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 crtc 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. |
| * |
| * 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, int crtc, |
| unsigned int flags, |
| int *vpos, int *hpos, ktime_t *stime, |
| ktime_t *etime); |
| |
| /** |
| * 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 crtc 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, int crtc, |
| 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 */ |
| int pixeldur_ns; /* pixel 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 */ |
| sigset_t sigmask; |
| |
| 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); |
| |
| /* 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); |
| |
| /* 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, 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 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 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 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 |