I want to move dumb buffer documentation into the right vfuncs, and
for that I first need to be able to pull that into kerneldoc without
having to clean up all of drmP.h. Also, header-splitting is nice.
While at it shuffle all the function declarations for drm_drv.c into
the right spots, and drop the kerneldoc for drm_minor_acquire/release
since it's only used internally.
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/drm_drv.c | 18 +--
drivers/gpu/drm/drm_internal.h | 4 +
include/drm/drmP.h | 299 +-----------------------------------
include/drm/drm_drv.h | 337 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 346 insertions(+), 312 deletions(-)
create mode 100644 include/drm/drm_drv.h
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 98a083d4b81e..cc6c2530764b 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -32,7 +32,10 @@
#include <linux/moduleparam.h>
#include <linux/mount.h>
#include <linux/slab.h>
+
+#include <drm/drm_drv.h>
#include <drm/drmP.h>
+
#include "drm_crtc_internal.h"
#include "drm_legacy.h"
#include "drm_internal.h"
@@ -257,10 +260,7 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
drm_debugfs_cleanup(minor);
}
-/**
- * drm_minor_acquire - Acquire a DRM minor
- * @minor_id: Minor ID of the DRM-minor
- *
+/*
* Looks up the given minor-ID and returns the respective DRM-minor object. The
* refence-count of the underlying device is increased so you must release this
* object with drm_minor_release().
@@ -268,10 +268,6 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
* As long as you hold this minor, it is guaranteed that the object and the
* minor->dev pointer will stay valid! However, the device may get unplugged and
* unregistered while you hold the minor.
- *
- * Returns:
- * Pointer to minor-object with increased device-refcount, or PTR_ERR on
- * failure.
*/
struct drm_minor *drm_minor_acquire(unsigned int minor_id)
{
@@ -294,12 +290,6 @@ struct drm_minor *drm_minor_acquire(unsigned int minor_id)
return minor;
}
-/**
- * drm_minor_release - Release DRM minor
- * @minor: Pointer to DRM minor object
- *
- * Release a minor that was previously acquired via drm_minor_acquire().
- */
void drm_minor_release(struct drm_minor *minor)
{
drm_dev_unref(minor->dev);
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index 1e29cbc556d5..db80ec860e33 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -43,6 +43,10 @@ void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv,
struct dma_buf *dma_buf);
+/* drm_drv.c */
+struct drm_minor *drm_minor_acquire(unsigned int minor_id);
+void drm_minor_release(struct drm_minor *minor);
+
/* drm_info.c */
int drm_name_info(struct seq_file *m, void *data);
int drm_clients_info(struct seq_file *m, void* data);
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index cfa4b80f0628..b352a7b812e6 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -76,6 +76,7 @@
#include <drm/drm_os_linux.h>
#include <drm/drm_sarea.h>
#include <drm/drm_vma_manager.h>
+#include <drm/drm_drv.h>
struct module;
@@ -137,34 +138,10 @@ struct dma_buf_attachment;
#define DRM_UT_VBL 0x20
#define DRM_UT_STATE 0x40
-extern __printf(6, 7)
-void drm_dev_printk(const struct device *dev, const char *level,
- unsigned int category, const char *function_name,
- const char *prefix, const char *format, ...);
-
-extern __printf(3, 4)
-void drm_printk(const char *level, unsigned int category,
- const char *format, ...);
-
/***********************************************************************/
/** \name DRM template customization defaults */
/*@{*/
-/* driver capabilities and requirements mask */
-#define DRIVER_USE_AGP 0x1
-#define DRIVER_LEGACY 0x2
-#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 */
/*@{*/
@@ -480,263 +457,6 @@ struct drm_lock_data {
#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 (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
- int (*dma_quiescent) (struct drm_device *);
- int (*context_dtor) (struct drm_device *dev, int context);
- int (*set_busid)(struct drm_device *dev, struct drm_master *master);
-
- /**
- * get_vblank_counter - get raw hardware vblank counter
- * @dev: DRM device
- * @pipe: counter to fetch
- *
- * Driver callback for fetching a raw hardware vblank counter for @crtc.
- * If a device doesn't have a hardware counter, the driver can simply
- * use drm_vblank_no_hw_counter() function. The DRM core will account for
- * missed vblank events while interrupts where disabled based on system
- * timestamps.
- *
- * Wraparound handling and loss of events due to modesetting is dealt
- * with in the DRM core code.
- *
- * RETURNS
- * Raw vblank counter value.
- */
- u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe);
-
- /**
- * enable_vblank - enable vblank interrupt events
- * @dev: DRM device
- * @pipe: which irq to enable
- *
- * Enable vblank interrupts for @crtc. If the device doesn't have
- * a hardware vblank counter, the driver should use the
- * drm_vblank_no_hw_counter() function that keeps a virtual counter.
- *
- * RETURNS
- * Zero on success, appropriate errno if the given @crtc's vblank
- * interrupt cannot be enabled.
- */
- int (*enable_vblank) (struct drm_device *dev, unsigned int pipe);
-
- /**
- * disable_vblank - disable vblank interrupt events
- * @dev: DRM device
- * @pipe: which irq to enable
- *
- * Disable vblank interrupts for @crtc. If the device doesn't have
- * a hardware vblank counter, the driver should use the
- * drm_vblank_no_hw_counter() function that keeps a virtual counter.
- */
- void (*disable_vblank) (struct drm_device *dev, unsigned int pipe);
-
- /**
- * Called by \c drm_device_is_agp. Typically used to determine if a
- * card is really attached to AGP or not.
- *
- * \param dev DRM device handle
- *
- * \returns
- * One of three values is returned depending on whether or not the
- * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
- * (return of 1), or may or may not be AGP (return of 2).
- */
- int (*device_is_agp) (struct drm_device *dev);
-
- /**
- * Called by vblank timestamping code.
- *
- * Return the current display scanout position from a crtc, and an
- * optional accurate ktime_get timestamp of when position was measured.
- *
- * \param dev DRM device.
- * \param pipe Id of the crtc to query.
- * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
- * \param *vpos Target location for current vertical scanout position.
- * \param *hpos Target location for current horizontal scanout position.
- * \param *stime Target location for timestamp taken immediately before
- * scanout position query. Can be NULL to skip timestamp.
- * \param *etime Target location for timestamp taken immediately after
- * scanout position query. Can be NULL to skip timestamp.
- * \param mode Current display timings.
- *
- * Returns vpos as a positive number while in active scanout area.
- * Returns vpos as a negative number inside vblank, counting the number
- * of scanlines to go until end of vblank, e.g., -1 means "one scanline
- * until start of active scanout / end of vblank."
- *
- * \return Flags, or'ed together as follows:
- *
- * DRM_SCANOUTPOS_VALID = Query successful.
- * DRM_SCANOUTPOS_INVBL = Inside vblank.
- * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
- * this flag means that returned position may be offset by a constant
- * but unknown small number of scanlines wrt. real scanout position.
- *
- */
- int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe,
- unsigned int flags, int *vpos, int *hpos,
- ktime_t *stime, ktime_t *etime,
- const struct drm_display_mode *mode);
-
- /**
- * Called by \c drm_get_last_vbltimestamp. Should return a precise
- * timestamp when the most recent VBLANK interval ended or will end.
- *
- * Specifically, the timestamp in @vblank_time should correspond as
- * closely as possible to the time when the first video scanline of
- * the video frame after the end of VBLANK will start scanning out,
- * the time immediately after end of the VBLANK interval. If the
- * @crtc is currently inside VBLANK, this will be a time in the future.
- * If the @crtc is currently scanning out a frame, this will be the
- * past start time of the current scanout. This is meant to adhere
- * to the OpenML OML_sync_control extension specification.
- *
- * \param dev dev DRM device handle.
- * \param pipe crtc for which timestamp should be returned.
- * \param *max_error Maximum allowable timestamp error in nanoseconds.
- * Implementation should strive to provide timestamp
- * with an error of at most *max_error nanoseconds.
- * Returns true upper bound on error for timestamp.
- * \param *vblank_time Target location for returned vblank timestamp.
- * \param flags 0 = Defaults, no special treatment needed.
- * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
- * irq handler. Some drivers need to apply some workarounds
- * for gpu-specific vblank irq quirks if flag is set.
- *
- * \returns
- * Zero if timestamping isn't supported in current display mode or a
- * negative number on failure. A positive status code on success,
- * which describes how the vblank_time timestamp was computed.
- */
- int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe,
- int *max_error,
- struct timeval *vblank_time,
- unsigned flags);
-
- /* these have to be filled in */
-
- irqreturn_t(*irq_handler) (int irq, void *arg);
- void (*irq_preinstall) (struct drm_device *dev);
- int (*irq_postinstall) (struct drm_device *dev);
- void (*irq_uninstall) (struct drm_device *dev);
-
- /* Master routines */
- int (*master_create)(struct drm_device *dev, struct drm_master *master);
- void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
- /**
- * master_set is called whenever the minor master is set.
- * master_drop is called whenever the minor master is dropped.
- */
-
- int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
- bool from_open);
- void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv);
-
- int (*debugfs_init)(struct drm_minor *minor);
- void (*debugfs_cleanup)(struct drm_minor *minor);
-
- /**
- * @gem_free_object: deconstructor for drm_gem_objects
- *
- * This is deprecated and should not be used by new drivers. Use
- * @gem_free_object_unlocked instead.
- */
- void (*gem_free_object) (struct drm_gem_object *obj);
-
- /**
- * @gem_free_object_unlocked: deconstructor for drm_gem_objects
- *
- * This is for drivers which are not encumbered with dev->struct_mutex
- * legacy locking schemes. Use this hook instead of @gem_free_object.
- */
- void (*gem_free_object_unlocked) (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 *);
-
- /**
- * Hook for allocating the GEM object struct, for use by core
- * helpers.
- */
- struct drm_gem_object *(*gem_create_object)(struct drm_device *dev,
- size_t size);
-
- /* 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_PRIMARY,
DRM_MINOR_CONTROL,
@@ -1007,11 +727,6 @@ void drm_clflush_virt_range(void *addr, unsigned long length);
* DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
*/
-/* drm_drv.c */
-void drm_put_dev(struct drm_device *dev);
-void drm_unplug_dev(struct drm_device *dev);
-extern unsigned int drm_debug;
-
/* Debugfs support */
#if defined(CONFIG_DEBUG_FS)
extern int drm_debugfs_create_files(const struct drm_info_list *files,
@@ -1064,18 +779,6 @@ extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);
extern void drm_sysfs_hotplug_event(struct drm_device *dev);
-struct drm_device *drm_dev_alloc(struct drm_driver *driver,
- struct device *parent);
-int drm_dev_init(struct drm_device *dev,
- 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);
-
-struct drm_minor *drm_minor_acquire(unsigned int minor_id);
-void drm_minor_release(struct drm_minor *minor);
/*@}*/
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
new file mode 100644
index 000000000000..98f930a76e6d
--- /dev/null
+++ b/include/drm/drm_drv.h
@@ -0,0 +1,337 @@
+/*
+ * Copyright 2016 Intel Corp.
+ *
+ * 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_DRV_H_
+#define _DRM_DRV_H_
+
+#include <linux/list.h>
+#include <linux/irqreturn.h>
+
+struct drm_device;
+struct drm_file;
+struct drm_gem_object;
+struct drm_master;
+struct drm_minor;
+struct dma_buf_attachment;
+struct drm_display_mode;
+struct drm_mode_create_dumb;
+
+/* driver capabilities and requirements mask */
+#define DRIVER_USE_AGP 0x1
+#define DRIVER_LEGACY 0x2
+#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
+
+/**
+ * struct drm_driver - 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. It contains lots of
+ * vfunc entries, and a pile of those probably should be moved to more
+ * appropriate places like &drm_mode_config_funcs or into a new operations
+ * structure for GEM drivers.
+ */
+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 (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
+ int (*dma_quiescent) (struct drm_device *);
+ int (*context_dtor) (struct drm_device *dev, int context);
+ int (*set_busid)(struct drm_device *dev, struct drm_master *master);
+
+ /**
+ * get_vblank_counter - get raw hardware vblank counter
+ * @dev: DRM device
+ * @pipe: counter to fetch
+ *
+ * Driver callback for fetching a raw hardware vblank counter for @crtc.
+ * If a device doesn't have a hardware counter, the driver can simply
+ * use drm_vblank_no_hw_counter() function. The DRM core will account for
+ * missed vblank events while interrupts where disabled based on system
+ * timestamps.
+ *
+ * Wraparound handling and loss of events due to modesetting is dealt
+ * with in the DRM core code.
+ *
+ * RETURNS
+ * Raw vblank counter value.
+ */
+ u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe);
+
+ /**
+ * enable_vblank - enable vblank interrupt events
+ * @dev: DRM device
+ * @pipe: which irq to enable
+ *
+ * Enable vblank interrupts for @crtc. If the device doesn't have
+ * a hardware vblank counter, the driver should use the
+ * drm_vblank_no_hw_counter() function that keeps a virtual counter.
+ *
+ * RETURNS
+ * Zero on success, appropriate errno if the given @crtc's vblank
+ * interrupt cannot be enabled.
+ */
+ int (*enable_vblank) (struct drm_device *dev, unsigned int pipe);
+
+ /**
+ * disable_vblank - disable vblank interrupt events
+ * @dev: DRM device
+ * @pipe: which irq to enable
+ *
+ * Disable vblank interrupts for @crtc. If the device doesn't have
+ * a hardware vblank counter, the driver should use the
+ * drm_vblank_no_hw_counter() function that keeps a virtual counter.
+ */
+ void (*disable_vblank) (struct drm_device *dev, unsigned int pipe);
+
+ /**
+ * Called by \c drm_device_is_agp. Typically used to determine if a
+ * card is really attached to AGP or not.
+ *
+ * \param dev DRM device handle
+ *
+ * \returns
+ * One of three values is returned depending on whether or not the
+ * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
+ * (return of 1), or may or may not be AGP (return of 2).
+ */
+ int (*device_is_agp) (struct drm_device *dev);
+
+ /**
+ * Called by vblank timestamping code.
+ *
+ * Return the current display scanout position from a crtc, and an
+ * optional accurate ktime_get timestamp of when position was measured.
+ *
+ * \param dev DRM device.
+ * \param pipe Id of the crtc to query.
+ * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
+ * \param *vpos Target location for current vertical scanout position.
+ * \param *hpos Target location for current horizontal scanout position.
+ * \param *stime Target location for timestamp taken immediately before
+ * scanout position query. Can be NULL to skip timestamp.
+ * \param *etime Target location for timestamp taken immediately after
+ * scanout position query. Can be NULL to skip timestamp.
+ * \param mode Current display timings.
+ *
+ * Returns vpos as a positive number while in active scanout area.
+ * Returns vpos as a negative number inside vblank, counting the number
+ * of scanlines to go until end of vblank, e.g., -1 means "one scanline
+ * until start of active scanout / end of vblank."
+ *
+ * \return Flags, or'ed together as follows:
+ *
+ * DRM_SCANOUTPOS_VALID = Query successful.
+ * DRM_SCANOUTPOS_INVBL = Inside vblank.
+ * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
+ * this flag means that returned position may be offset by a constant
+ * but unknown small number of scanlines wrt. real scanout position.
+ *
+ */
+ int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe,
+ unsigned int flags, int *vpos, int *hpos,
+ ktime_t *stime, ktime_t *etime,
+ const struct drm_display_mode *mode);
+
+ /**
+ * Called by \c drm_get_last_vbltimestamp. Should return a precise
+ * timestamp when the most recent VBLANK interval ended or will end.
+ *
+ * Specifically, the timestamp in @vblank_time should correspond as
+ * closely as possible to the time when the first video scanline of
+ * the video frame after the end of VBLANK will start scanning out,
+ * the time immediately after end of the VBLANK interval. If the
+ * @crtc is currently inside VBLANK, this will be a time in the future.
+ * If the @crtc is currently scanning out a frame, this will be the
+ * past start time of the current scanout. This is meant to adhere
+ * to the OpenML OML_sync_control extension specification.
+ *
+ * \param dev dev DRM device handle.
+ * \param pipe crtc for which timestamp should be returned.
+ * \param *max_error Maximum allowable timestamp error in nanoseconds.
+ * Implementation should strive to provide timestamp
+ * with an error of at most *max_error nanoseconds.
+ * Returns true upper bound on error for timestamp.
+ * \param *vblank_time Target location for returned vblank timestamp.
+ * \param flags 0 = Defaults, no special treatment needed.
+ * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
+ * irq handler. Some drivers need to apply some workarounds
+ * for gpu-specific vblank irq quirks if flag is set.
+ *
+ * \returns
+ * Zero if timestamping isn't supported in current display mode or a
+ * negative number on failure. A positive status code on success,
+ * which describes how the vblank_time timestamp was computed.
+ */
+ int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe,
+ int *max_error,
+ struct timeval *vblank_time,
+ unsigned flags);
+
+ /* these have to be filled in */
+
+ irqreturn_t(*irq_handler) (int irq, void *arg);
+ void (*irq_preinstall) (struct drm_device *dev);
+ int (*irq_postinstall) (struct drm_device *dev);
+ void (*irq_uninstall) (struct drm_device *dev);
+
+ /* Master routines */
+ int (*master_create)(struct drm_device *dev, struct drm_master *master);
+ void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
+ /**
+ * master_set is called whenever the minor master is set.
+ * master_drop is called whenever the minor master is dropped.
+ */
+
+ int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
+ bool from_open);
+ void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv);
+
+ int (*debugfs_init)(struct drm_minor *minor);
+ void (*debugfs_cleanup)(struct drm_minor *minor);
+
+ /**
+ * @gem_free_object: deconstructor for drm_gem_objects
+ *
+ * This is deprecated and should not be used by new drivers. Use
+ * @gem_free_object_unlocked instead.
+ */
+ void (*gem_free_object) (struct drm_gem_object *obj);
+
+ /**
+ * @gem_free_object_unlocked: deconstructor for drm_gem_objects
+ *
+ * This is for drivers which are not encumbered with dev->struct_mutex
+ * legacy locking schemes. Use this hook instead of @gem_free_object.
+ */
+ void (*gem_free_object_unlocked) (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 *);
+
+ /**
+ * Hook for allocating the GEM object struct, for use by core
+ * helpers.
+ */
+ struct drm_gem_object *(*gem_create_object)(struct drm_device *dev,
+ size_t size);
+
+ /* 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;
+};
+
+extern __printf(6, 7)
+void drm_dev_printk(const struct device *dev, const char *level,
+ unsigned int category, const char *function_name,
+ const char *prefix, const char *format, ...);
+extern __printf(3, 4)
+void drm_printk(const char *level, unsigned int category,
+ const char *format, ...);
+extern unsigned int drm_debug;
+
+int drm_dev_init(struct drm_device *dev,
+ struct drm_driver *driver,
+ struct device *parent);
+struct drm_device *drm_dev_alloc(struct drm_driver *driver,
+ struct device *parent);
+int drm_dev_register(struct drm_device *dev, unsigned long flags);
+void drm_dev_unregister(struct drm_device *dev);
+
+void drm_dev_ref(struct drm_device *dev);
+void drm_dev_unref(struct drm_device *dev);
+void drm_put_dev(struct drm_device *dev);
+void drm_unplug_dev(struct drm_device *dev);
+
+#endif
--
2.10.2
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