![Dave Airlie](/assets/img/avatar_default.png)
This patch adds a kms driver for the virtio gpu. The xorg modesetting driver can handle the device just fine, the framebuffer for fbcon is there too. Qemu patches for the host side are under review currently. The pci version of the device comes in two variants: with and without vga compatibility. The former has a extra memory bar for the vga framebuffer, the later is a pure virtio device. The only concern for this driver is that in the virtio-vga case we have to kick out the firmware framebuffer. Initial revision has only 2d support, 3d (virgl) support requires some more work on the qemu side and will be added later. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com>
1095 lines
35 KiB
C
1095 lines
35 KiB
C
/*
|
|
* 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
|
|
|
|
/***********************************************************************/
|
|
/** \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;
|
|
|
|
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_mode_group mode_group;
|
|
};
|
|
|
|
|
|
struct drm_pending_vblank_event {
|
|
struct drm_pending_event base;
|
|
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 */
|
|
unsigned long 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 */
|
|
int crtc; /* crtc index */
|
|
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 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, 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 crtc);
|
|
extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);
|
|
extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
|
|
struct timeval *vblanktime);
|
|
extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
|
|
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, int crtc);
|
|
extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
|
|
extern int drm_vblank_get(struct drm_device *dev, int crtc);
|
|
extern void drm_vblank_put(struct drm_device *dev, int crtc);
|
|
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, int crtc);
|
|
extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc);
|
|
extern void drm_vblank_off(struct drm_device *dev, int crtc);
|
|
extern void drm_vblank_on(struct drm_device *dev, int crtc);
|
|
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,
|
|
int crtc, int *max_error,
|
|
struct timeval *vblank_time,
|
|
unsigned flags,
|
|
const struct drm_crtc *refcrtc,
|
|
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, int crtc);
|
|
extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
|
|
|
|
/* 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
|