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drmP.h
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/**
* \file drmP.h
* Private header for Direct Rendering Manager
*
* \author Rickard E. (Rik) Faith <[email protected]>
* \author Gareth Hughes <[email protected]>
*/
/*
* 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.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef _DRM_P_H_
#define _DRM_P_H_
#if defined(_KERNEL) || defined(__KERNEL__)
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/sglist.h>
#include <sys/stat.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/fcntl.h>
#include <sys/uio.h>
#include <sys/filio.h>
#include <sys/rwlock.h>
#include <sys/selinfo.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <sys/queue.h>
#include <sys/signalvar.h>
#include <sys/poll.h>
#include <sys/sbuf.h>
#include <sys/taskqueue.h>
#include <sys/tree.h>
#include <sys/vmmeter.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <vm/vm_kern.h>
#include <vm/vm_map.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>
#include <vm/vm_param.h>
#include <vm/vm_phys.h>
#include <machine/bus.h>
#include <machine/resource.h>
#if defined(__i386__) || defined(__amd64__)
#include <machine/specialreg.h>
#endif
#include <machine/sysarch.h>
#include <sys/endian.h>
#include <sys/mman.h>
#include <sys/rman.h>
#include <sys/memrange.h>
#include <dev/agp/agpvar.h>
#include <sys/agpio.h>
#include <sys/mutex.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <sys/selinfo.h>
#include <sys/bus.h>
#include <dev/drm2/drm.h>
#include <dev/drm2/drm_sarea.h>
#include <dev/drm2/drm_atomic.h>
#include <dev/drm2/drm_linux_list.h>
#include <dev/drm2/drm_gem_names.h>
#include <dev/drm2/drm_os_freebsd.h>
#if defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE))
#define __OS_HAS_AGP 1
#else
#define __OS_HAS_AGP 0
#endif
#if defined(CONFIG_MTRR)
#define __OS_HAS_MTRR 1
#else
#define __OS_HAS_MTRR 0
#endif
struct drm_file;
struct drm_device;
#include <dev/drm2/drm_hashtab.h>
#include <dev/drm2/drm_mm.h>
#include "opt_drm.h"
#include "opt_syscons.h"
#ifdef DRM_DEBUG
#undef DRM_DEBUG
#define DRM_DEBUG_DEFAULT_ON 1
#endif /* DRM_DEBUG */
#define DRM_DEBUGBITS_DEBUG 0x1
#define DRM_DEBUGBITS_KMS 0x2
#define DRM_DEBUGBITS_FAILED_IOCTL 0x4
#undef DRM_LINUX
#define DRM_LINUX 0
/***********************************************************************/
/** \name DRM template customization defaults */
/*@{*/
/* driver capabilities and requirements mask */
#define DRIVER_USE_AGP 0x1
#define DRIVER_REQUIRE_AGP 0x2
#define DRIVER_USE_MTRR 0x4
#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_IRQ_VBL 0x100
#define DRIVER_DMA_QUEUE 0x200
#define DRIVER_FB_DMA 0x400
#define DRIVER_IRQ_VBL2 0x800
#define DRIVER_GEM 0x1000
#define DRIVER_MODESET 0x2000
#define DRIVER_PRIME 0x4000
#define DRIVER_BUS_PCI 0x1
#define DRIVER_BUS_PLATFORM 0x2
#define DRIVER_BUS_USB 0x3
/***********************************************************************/
/** \name Begin the DRM... */
/*@{*/
#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
also include looping detection. */
#define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
#define DRM_LOOPING_LIMIT 5000000
#define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
#define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
#define DRM_FLAG_DEBUG 0x01
#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
#define DRM_MAP_HASH_OFFSET 0x10000000
/*@}*/
/***********************************************************************/
/** \name Macros to make printk easier */
/*@{*/
/**
* Error output.
*
* \param fmt printf() like format string.
* \param arg arguments
*/
#define DRM_ERROR(fmt, ...) \
printf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt, \
DRM_CURRENTPID, __func__ , ##__VA_ARGS__)
#define DRM_WARNING(fmt, ...) printf("warning: [" DRM_NAME "] " fmt , ##__VA_ARGS__)
#define DRM_INFO(fmt, ...) printf("info: [" DRM_NAME "] " fmt , ##__VA_ARGS__)
/**
* Debug output.
*
* \param fmt printf() like format string.
* \param arg arguments
*/
#define DRM_DEBUG(fmt, ...) do { \
if ((drm_debug & DRM_DEBUGBITS_DEBUG) != 0) \
printf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \
__func__ , ##__VA_ARGS__); \
} while (0)
#define DRM_DEBUG_DRIVER(fmt, ...) do { \
if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \
printf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\
__func__ , ##__VA_ARGS__); \
} while (0)
#define DRM_DEBUG_KMS(fmt, ...) do { \
if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \
printf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\
__func__ , ##__VA_ARGS__); \
} while (0)
#define DRM_LOG(fmt, ...) do { \
if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \
printf("[" DRM_NAME "]:pid%d:%s]" fmt, DRM_CURRENTPID, \
__func__ , ##__VA_ARGS__); \
} while (0)
#define DRM_LOG_KMS(fmt, ...) do { \
if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \
printf("[" DRM_NAME "]:KMS:pid%d:%s]" fmt, DRM_CURRENTPID,\
__func__ , ##__VA_ARGS__); \
} while (0)
#define DRM_LOG_MODE(fmt, ...) do { \
if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \
printf("[" DRM_NAME "]:pid%d:%s]" fmt, DRM_CURRENTPID, \
__func__ , ##__VA_ARGS__); \
} while (0)
#define DRM_LOG_DRIVER(fmt, ...) do { \
if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \
printf("[" DRM_NAME "]:KMS:pid%d:%s]" fmt, DRM_CURRENTPID,\
__func__ , ##__VA_ARGS__); \
} while (0)
/*@}*/
/***********************************************************************/
/** \name Internal types and structures */
/*@{*/
#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
/**
* Test that the hardware lock is held by the caller, returning otherwise.
*
* \param dev DRM device.
* \param filp file pointer of the caller.
*/
#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
do { \
if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
_file_priv->master->lock.file_priv != _file_priv) { \
DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
__func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
_file_priv->master->lock.file_priv, _file_priv); \
return -EINVAL; \
} \
} while (0)
/**
* 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);
#define DRM_IOCTL_NR(n) ((n) & 0xff)
#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
struct drm_ioctl_desc {
unsigned long cmd;
int flags;
drm_ioctl_t *func;
unsigned int cmd_drv;
};
/**
* Creates a driver or general drm_ioctl_desc array entry for the given
* ioctl, for use by drm_ioctl().
*/
#define DRM_IOCTL_DEF(ioctl, _func, _flags) \
[DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0}
#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
[DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
struct drm_magic_entry {
struct list_head head;
struct drm_hash_item hash_item;
struct drm_file *priv;
};
/**
* DMA buffer.
*/
struct drm_buf {
int idx; /**< Index into master buflist */
int total; /**< Buffer size */
int order; /**< log-base-2(total) */
int used; /**< Amount of buffer in use (for DMA) */
unsigned long offset; /**< Byte offset (used internally) */
void *address; /**< Address of buffer */
unsigned long bus_address; /**< Bus address of buffer */
struct drm_buf *next; /**< Kernel-only: used for free list */
__volatile__ int waiting; /**< On kernel DMA queue */
__volatile__ int pending; /**< On hardware DMA queue */
struct drm_file *file_priv; /**< Private of holding file descr */
int context; /**< Kernel queue for this buffer */
int while_locked; /**< Dispatch this buffer while locked */
enum {
DRM_LIST_NONE = 0,
DRM_LIST_FREE = 1,
DRM_LIST_WAIT = 2,
DRM_LIST_PEND = 3,
DRM_LIST_PRIO = 4,
DRM_LIST_RECLAIM = 5
} list; /**< Which list we're on */
int dev_priv_size; /**< Size of buffer private storage */
void *dev_private; /**< Per-buffer private storage */
};
struct drm_freelist {
int initialized; /**< Freelist in use */
atomic_t count; /**< Number of free buffers */
struct drm_buf *next; /**< End pointer */
#ifdef FREEBSD_NOTYET
wait_queue_head_t waiting; /**< Processes waiting on free bufs */
#endif /* defined(FREEBSD_NOTYET) */
int low_mark; /**< Low water mark */
int high_mark; /**< High water mark */
#ifdef FREEBSD_NOTYET
atomic_t wfh; /**< If waiting for high mark */
spinlock_t lock;
#endif /* defined(FREEBSD_NOTYET) */
};
typedef struct drm_dma_handle {
void *vaddr;
bus_addr_t busaddr;
bus_dma_tag_t tag;
bus_dmamap_t map;
} drm_dma_handle_t;
/**
* Buffer entry. There is one of this for each buffer size order.
*/
struct drm_buf_entry {
int buf_size; /**< size */
int buf_count; /**< number of buffers */
struct drm_buf *buflist; /**< buffer list */
int seg_count;
int page_order;
struct drm_dma_handle **seglist;
struct drm_freelist freelist;
};
/* 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 mtx lock;
};
struct drm_file {
int authenticated;
pid_t pid;
uid_t uid;
drm_magic_t magic;
unsigned long ioctl_count;
struct list_head lhead;
struct drm_minor *minor;
unsigned long lock_count;
void *driver_priv;
struct drm_gem_names object_names;
int is_master; /* this file private is a master for a minor */
struct drm_master *master; /* master this node is currently associated with
N.B. not always minor->master */
struct list_head fbs;
struct selinfo event_poll;
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 */
struct mtx spinlock;
uint32_t kernel_waiters;
uint32_t user_waiters;
int idle_has_lock;
};
/**
* DMA data.
*/
struct drm_device_dma {
struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
int buf_count; /**< total number of buffers */
struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
int seg_count;
int page_count; /**< number of pages */
unsigned long *pagelist; /**< page list */
unsigned long byte_count;
enum {
_DRM_DMA_USE_AGP = 0x01,
_DRM_DMA_USE_SG = 0x02,
_DRM_DMA_USE_FB = 0x04,
_DRM_DMA_USE_PCI_RO = 0x08
} flags;
};
/**
* AGP memory entry. Stored as a doubly linked list.
*/
struct drm_agp_mem {
unsigned long handle; /**< handle */
DRM_AGP_MEM *memory;
unsigned long bound; /**< address */
int pages;
struct list_head head;
};
/**
* AGP data.
*
* \sa drm_agp_init() and drm_device::agp.
*/
struct drm_agp_head {
DRM_AGP_KERN agp_info; /**< AGP device information */
struct list_head memory;
unsigned long mode; /**< AGP mode */
device_t bridge;
int enabled; /**< whether the AGP bus as been enabled */
int acquired; /**< whether the AGP device has been acquired */
unsigned long base;
int agp_mtrr;
int cant_use_aperture;
};
/**
* Scatter-gather memory.
*/
struct drm_sg_mem {
vm_offset_t vaddr;
vm_paddr_t *busaddr;
vm_pindex_t pages;
};
struct drm_sigdata {
int context;
struct drm_hw_lock *lock;
};
/**
* Kernel side of a mapping
*/
#define DRM_MAP_HANDLE_BITS (sizeof(void *) == 4 ? 4 : 24)
#define DRM_MAP_HANDLE_SHIFT (sizeof(void *) * 8 - DRM_MAP_HANDLE_BITS)
struct drm_local_map {
resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
unsigned long size; /**< Requested physical size (bytes) */
enum drm_map_type type; /**< Type of memory to map */
enum drm_map_flags flags; /**< Flags */
void *handle; /**< User-space: "Handle" to pass to mmap() */
/**< Kernel-space: kernel-virtual address */
int mtrr; /**< MTRR slot used */
/* Private data */
drm_dma_handle_t *dmah;
};
typedef struct drm_local_map drm_local_map_t;
/**
* Mappings list
*/
struct drm_map_list {
struct list_head head; /**< list head */
struct drm_hash_item hash;
struct drm_local_map *map; /**< mapping */
uint64_t user_token;
struct drm_master *master;
struct drm_mm_node *file_offset_node; /**< fake offset */
};
/**
* Context handle list
*/
struct drm_ctx_list {
struct list_head head; /**< list head */
drm_context_t handle; /**< context handle */
struct drm_file *tag; /**< associated fd private data */
};
/* location of GART table */
#define DRM_ATI_GART_MAIN 1
#define DRM_ATI_GART_FB 2
#define DRM_ATI_GART_PCI 1
#define DRM_ATI_GART_PCIE 2
#define DRM_ATI_GART_IGP 3
struct drm_ati_pcigart_info {
int gart_table_location;
int gart_reg_if;
void *addr;
dma_addr_t bus_addr;
dma_addr_t table_mask;
struct drm_dma_handle *table_handle;
struct drm_local_map mapping;
int table_size;
struct drm_dma_handle *dmah; /* handle for ATI PCIGART table FIXME */
};
/**
* GEM specific mm private for tracking GEM objects
*/
struct drm_gem_mm {
struct unrhdr *idxunr;
struct drm_open_hash offset_hash; /**< User token hash table for maps */
};
/**
* This structure defines the drm_mm memory object, which will be used by the
* DRM for its buffer objects.
*/
struct drm_gem_object {
/** Reference count of this object */
u_int refcount;
/** Handle count of this object. Each handle also holds a reference */
atomic_t handle_count; /* number of handles on this object */
/** Related drm device */
struct drm_device *dev;
/** File representing the shmem storage: filp in Linux parlance */
vm_object_t vm_obj;
/* Mapping info for this object */
bool on_map;
struct drm_hash_item map_list;
/**
* Size of the object, in bytes. Immutable over the object's
* lifetime.
*/
size_t size;
/**
* Global name for this object, starts at 1. 0 means unnamed.
* Access is covered by the object_name_lock in the related drm_device
*/
int name;
/**
* Memory domains. These monitor which caches contain read/write data
* related to the object. When transitioning from one set of domains
* to another, the driver is called to ensure that caches are suitably
* flushed and invalidated
*/
uint32_t read_domains;
uint32_t write_domain;
/**
* While validating an exec operation, the
* new read/write domain values are computed here.
* They will be transferred to the above values
* at the point that any cache flushing occurs
*/
uint32_t pending_read_domains;
uint32_t pending_write_domain;
void *driver_private;
#ifdef FREEBSD_NOTYET
/* dma buf exported from this GEM object */
struct dma_buf *export_dma_buf;
/* dma buf attachment backing this object */
struct dma_buf_attachment *import_attach;
#endif /* FREEBSD_NOTYET */
};
#include <dev/drm2/drm_crtc.h>
/* per-master structure */
struct drm_master {
u_int refcount; /* refcount for this master */
struct list_head head; /**< each minor contains a list of masters */
struct drm_minor *minor; /**< link back to minor we are a master for */
char *unique; /**< Unique identifier: e.g., busid */
int unique_len; /**< Length of unique field */
int unique_size; /**< amount allocated */
int blocked; /**< Blocked due to VC switch? */
/** \name Authentication */
/*@{ */
struct drm_open_hash magiclist;
struct list_head magicfree;
/*@} */
struct drm_lock_data lock; /**< Information on hardware lock */
void *driver_priv; /**< Private structure for driver to use */
};
/* 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_INVBL (1 << 1)
/* get_scanout_position() return flags */
#define DRM_SCANOUTPOS_VALID (1 << 0)
#define DRM_SCANOUTPOS_INVBL (1 << 1)
#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
struct drm_bus {
int bus_type;
int (*get_irq)(struct drm_device *dev);
void (*free_irq)(struct drm_device *dev);
const char *(*get_name)(struct drm_device *dev);
int (*set_busid)(struct drm_device *dev, struct drm_master *master);
int (*set_unique)(struct drm_device *dev, struct drm_master *master,
struct drm_unique *unique);
int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
/* hooks that are for PCI */
int (*agp_init)(struct drm_device *dev);
};
/**
* 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);
/**
* 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.
*
* \param dev DRM device.
* \param crtc Id of the crtc to query.
* \param *vpos Target location for current vertical scanout position.
* \param *hpos Target location for current horizontal scanout position.
*
* 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,
int *vpos, int *hpos);
/**
* 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) (DRM_IRQ_ARGS);
void (*irq_preinstall) (struct drm_device *dev);
int (*irq_postinstall) (struct drm_device *dev);
void (*irq_uninstall) (struct drm_device *dev);
void (*set_version) (struct drm_device *dev,
struct drm_set_version *sv);
/* 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);
/**
* Driver-specific constructor for drm_gem_objects, to set up
* obj->driver_private.
*
* Returns 0 on success.
*/
int (*gem_init_object) (struct drm_gem_object *obj);
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 *);
#ifdef FREEBSD_NOTYET
/* 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);
#endif /* defined(FREEBSD_NOTYET) */
/* 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 */
struct cdev_pager_ops *gem_pager_ops;
int (*sysctl_init)(struct drm_device *dev,
struct sysctl_ctx_list *ctx, struct sysctl_oid *top);
void (*sysctl_cleanup)(struct drm_device *dev);
int major;
int minor;
int patchlevel;
char *name;
char *desc;
char *date;
u32 driver_features;
int dev_priv_size;
struct drm_ioctl_desc *ioctls;
int num_ioctls;
struct drm_bus *bus;
#ifdef COMPAT_FREEBSD32
struct drm_ioctl_desc *compat_ioctls;
int *num_compat_ioctls;
#endif
int buf_priv_size;
};
#define DRM_MINOR_UNASSIGNED 0
#define DRM_MINOR_LEGACY 1
#define DRM_MINOR_CONTROL 2
#define DRM_MINOR_RENDER 3
/**
* DRM minor structure. This structure represents a drm minor number.
*/
struct drm_minor {
int index; /**< Minor device number */
int type; /**< Control or render */
struct cdev *device; /**< Device number for mknod */
device_t kdev; /**< OS device */
struct drm_device *dev;
struct drm_master *master; /* currently active master for this node */
struct list_head master_list;
struct drm_mode_group mode_group;
struct sigio *buf_sigio; /* Processes waiting for SIGIO */
};
/* mode specified on the command line */
struct drm_cmdline_mode {
bool specified;
bool refresh_specified;
bool bpp_specified;
int xres, yres;
int bpp;
int refresh;
bool rb;
bool interlace;
bool cvt;
bool margins;
enum drm_connector_force force;
};
struct drm_pending_vblank_event {
struct drm_pending_event base;
int pipe;
struct drm_event_vblank event;
};
/**
* DRM device structure. This structure represent a complete card that
* may contain multiple heads.
*/
struct drm_device {
int if_version; /**< Highest interface version set */
/** \name Locks */
/*@{ */
struct mtx count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
struct sx dev_struct_lock; /**< For others */
/*@} */
/** \name Usage Counters */
/*@{ */
int open_count; /**< Outstanding files open */
atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
atomic_t vma_count; /**< Outstanding vma areas open */
int buf_use; /**< Buffers in use -- cannot alloc */
atomic_t buf_alloc; /**< Buffer allocation in progress */
/*@} */
/** \name Performance counters */
/*@{ */
unsigned long counters;
enum drm_stat_type types[15];
atomic_t counts[15];
/*@} */
struct list_head filelist;
/** \name Memory management */
/*@{ */