/* * 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/rbtree.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/vmalloc.h> #include <linux/workqueue.h> #include <linux/dma-fence.h> #include <asm/mman.h> #include <asm/pgalloc.h> #include <linux/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_fourcc.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> #include <drm/drm_drv.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 drm_master; struct drm_vblank_crtc; struct device_node; struct videomode; struct reservation_object; struct dma_buf_attachment; /* * The following 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_NONE 0x00 #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 #define DRM_UT_STATE 0x40 /***********************************************************************/ /** \name DRM template customization defaults */ /*@{*/ /***********************************************************************/ /** \name Macros to make printk easier */ /*@{*/ #define _DRM_PRINTK(once, level, fmt, ...) \ do { \ printk##once(KERN_##level "[" DRM_NAME "] " fmt, \ ##__VA_ARGS__); \ } while (0) #define DRM_INFO(fmt, ...) \ _DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__) #define DRM_NOTE(fmt, ...) \ _DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__) #define DRM_WARN(fmt, ...) \ _DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__) #define DRM_INFO_ONCE(fmt, ...) \ _DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__) #define DRM_NOTE_ONCE(fmt, ...) \ _DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__) #define DRM_WARN_ONCE(fmt, ...) \ _DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__) /** * Error output. * * \param fmt printf() like format string. * \param arg arguments */ #define DRM_DEV_ERROR(dev, fmt, ...) \ drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*",\ fmt, ##__VA_ARGS__) #define DRM_ERROR(fmt, ...) \ drm_printk(KERN_ERR, DRM_UT_NONE, 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_DEV_ERROR_RATELIMITED(dev, fmt, ...) \ ({ \ static DEFINE_RATELIMIT_STATE(_rs, \ DEFAULT_RATELIMIT_INTERVAL, \ DEFAULT_RATELIMIT_BURST); \ \ if (__ratelimit(&_rs)) \ DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__); \ }) #define DRM_ERROR_RATELIMITED(fmt, ...) \ DRM_DEV_ERROR_RATELIMITED(NULL, fmt, ##__VA_ARGS__) #define DRM_DEV_INFO(dev, fmt, ...) \ drm_dev_printk(dev, KERN_INFO, DRM_UT_NONE, __func__, "", fmt, \ ##__VA_ARGS__) #define DRM_DEV_INFO_ONCE(dev, fmt, ...) \ ({ \ static bool __print_once __read_mostly; \ if (!__print_once) { \ __print_once = true; \ DRM_DEV_INFO(dev, fmt, ##__VA_ARGS__); \ } \ }) /** * Debug output. * * \param fmt printf() like format string. * \param arg arguments */ #define DRM_DEV_DEBUG(dev, fmt, args...) \ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt, \ ##args) #define DRM_DEBUG(fmt, ...) \ drm_printk(KERN_DEBUG, DRM_UT_CORE, fmt, ##__VA_ARGS__) #define DRM_DEV_DEBUG_DRIVER(dev, fmt, args...) \ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, __func__, "", \ fmt, ##args) #define DRM_DEBUG_DRIVER(fmt, ...) \ drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) #define DRM_DEV_DEBUG_KMS(dev, fmt, args...) \ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt, \ ##args) #define DRM_DEBUG_KMS(fmt, ...) \ drm_printk(KERN_DEBUG, DRM_UT_KMS, fmt, ##__VA_ARGS__) #define DRM_DEV_DEBUG_PRIME(dev, fmt, args...) \ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, __func__, "", \ fmt, ##args) #define DRM_DEBUG_PRIME(fmt, ...) \ drm_printk(KERN_DEBUG, DRM_UT_PRIME, fmt, ##__VA_ARGS__) #define DRM_DEV_DEBUG_ATOMIC(dev, fmt, args...) \ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, __func__, "", \ fmt, ##args) #define DRM_DEBUG_ATOMIC(fmt, ...) \ drm_printk(KERN_DEBUG, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__) #define DRM_DEV_DEBUG_VBL(dev, fmt, args...) \ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt, \ ##args) #define DRM_DEBUG_VBL(fmt, ...) \ drm_printk(KERN_DEBUG, DRM_UT_VBL, fmt, ##__VA_ARGS__) #define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, args...) \ ({ \ static DEFINE_RATELIMIT_STATE(_rs, \ DEFAULT_RATELIMIT_INTERVAL, \ DEFAULT_RATELIMIT_BURST); \ if (__ratelimit(&_rs)) \ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ ## level, \ __func__, "", fmt, ##args); \ }) /** * Rate limited debug output. Like DRM_DEBUG() but won't flood the log. * * \param fmt printf() like format string. * \param arg arguments */ #define DRM_DEV_DEBUG_RATELIMITED(dev, fmt, args...) \ DEV__DRM_DEFINE_DEBUG_RATELIMITED(dev, CORE, fmt, ##args) #define DRM_DEBUG_RATELIMITED(fmt, args...) \ DRM_DEV_DEBUG_RATELIMITED(NULL, fmt, ##args) #define DRM_DEV_DEBUG_DRIVER_RATELIMITED(dev, fmt, args...) \ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, DRIVER, fmt, ##args) #define DRM_DEBUG_DRIVER_RATELIMITED(fmt, args...) \ DRM_DEV_DEBUG_DRIVER_RATELIMITED(NULL, fmt, ##args) #define DRM_DEV_DEBUG_KMS_RATELIMITED(dev, fmt, args...) \ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, KMS, fmt, ##args) #define DRM_DEBUG_KMS_RATELIMITED(fmt, args...) \ DRM_DEV_DEBUG_KMS_RATELIMITED(NULL, fmt, ##args) #define DRM_DEV_DEBUG_PRIME_RATELIMITED(dev, fmt, args...) \ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, PRIME, fmt, ##args) #define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...) \ DRM_DEV_DEBUG_PRIME_RATELIMITED(NULL, fmt, ##args) /* Format strings and argument splitters to simplify printing * various "complex" objects */ #define DRM_MODE_FMT "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x" #define DRM_MODE_ARG(m) \ (m)->base.id, (m)->name, (m)->vrefresh, (m)->clock, \ (m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \ (m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \ (m)->type, (m)->flags #define DRM_RECT_FMT "%dx%d%+d%+d" #define DRM_RECT_ARG(r) drm_rect_width(r), drm_rect_height(r), (r)->x1, (r)->y1 /* for rect's in fixed-point format: */ #define DRM_RECT_FP_FMT "%d.%06ux%d.%06u%+d.%06u%+d.%06u" #define DRM_RECT_FP_ARG(r) \ drm_rect_width(r) >> 16, ((drm_rect_width(r) & 0xffff) * 15625) >> 10, \ drm_rect_height(r) >> 16, ((drm_rect_height(r) & 0xffff) * 15625) >> 10, \ (r)->x1 >> 16, (((r)->x1 & 0xffff) * 15625) >> 10, \ (r)->y1 >> 16, (((r)->y1 & 0xffff) * 15625) >> 10 /*@}*/ /***********************************************************************/ /** \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 completion *completion; struct drm_event *event; struct dma_fence *fence; struct list_head link; struct list_head pending_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 */ }; struct drm_prime_file_private { struct mutex lock; struct rb_root dmabufs; struct rb_root handles; }; /** File private data */ struct drm_file { unsigned authenticated :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 the creator of @master. * Protected by struct drm_device::master_mutex. */ unsigned is_master:1; struct pid *pid; 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 dev->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 pending_event_list; struct list_head event_list; int event_space; struct mutex event_read_lock; 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; }; /* 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) enum drm_minor_type { DRM_MINOR_PRIMARY, 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. */ }; /** * 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 */ bool registered; /* currently active master for this device. Protected by master_mutex */ struct drm_master *master; 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 mutex filelist_mutex; 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; /* * 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; }; #include <drm/drm_irq.h> #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_PRIMARY; } /******************************************************************/ /** \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); #ifdef CONFIG_COMPAT extern long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); #else /* Let drm_compat_ioctl be assigned to .compat_ioctl unconditionally */ #define drm_compat_ioctl NULL #endif extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); /* File Operations (drm_fops.c) */ int drm_open(struct inode *inode, struct file *filp); ssize_t drm_read(struct file *filp, char __user *buffer, size_t count, loff_t *offset); int drm_release(struct inode *inode, struct file *filp); unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait); int drm_event_reserve_init_locked(struct drm_device *dev, struct drm_file *file_priv, struct drm_pending_event *p, struct drm_event *e); int drm_event_reserve_init(struct drm_device *dev, struct drm_file *file_priv, struct drm_pending_event *p, struct drm_event *e); void drm_event_cancel_free(struct drm_device *dev, struct drm_pending_event *p); void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e); void drm_send_event(struct drm_device *dev, struct drm_pending_event *e); /* 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. */ /* 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 struct dma_buf_export_info; 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); struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev, struct dma_buf_export_info *exp_info); 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); /*@}*/ /* 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); extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw); /* platform section */ extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device); /* 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; } /* helper for handling conditionals in various for_each macros */ #define for_each_if(condition) if (!(condition)) {} else #endif