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drm: Remove support for legacy drivers

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Remove all hooks and calls into code for user-space mode setting from
the DRM core. Without the drivers and ioctl entry points, none of this
is required any longer.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: David Airlie <airlied@gmail.com>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231122122449.11588-11-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2023-11-22 13:09:39 +01:00
parent 6bb0814be4
commit 2722ac1ce1
4 changed files with 3 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/drm_auth.c
+1 -7
View File
@@ -37,13 +37,12 @@
#include <drm/drm_print.h>
#include "drm_internal.h"
#include "drm_legacy.h"
/**
* DOC: master and authentication
*
* &struct drm_master is used to track groups of clients with open
* primary/legacy device nodes. For every &struct drm_file which has had at
* primary device nodes. For every &struct drm_file which has had at
* least once successfully became the device master (either through the
* SET_MASTER IOCTL, or implicitly through opening the primary device node when
* no one else is the current master that time) there exists one &drm_master.
@@ -139,7 +138,6 @@ struct drm_master *drm_master_create(struct drm_device *dev)
return NULL;
kref_init(&master->refcount);
drm_master_legacy_init(master);
idr_init_base(&master->magic_map, 1);
master->dev = dev;
@@ -365,8 +363,6 @@ void drm_master_release(struct drm_file *file_priv)
if (!drm_is_current_master_locked(file_priv))
goto out;
drm_legacy_lock_master_cleanup(dev, master);
if (dev->master == file_priv->master)
drm_drop_master(dev, file_priv);
out:
@@ -429,8 +425,6 @@ static void drm_master_destroy(struct kref *kref)
if (drm_core_check_feature(dev, DRIVER_MODESET))
drm_lease_destroy(master);
drm_legacy_master_rmmaps(dev, master);
idr_destroy(&master->magic_map);
idr_destroy(&master->leases);
idr_destroy(&master->lessee_idr);
drivers/gpu/drm/drm_drv.c
-17
View File
@@ -48,7 +48,6 @@
#include "drm_crtc_internal.h"
#include "drm_internal.h"
#include "drm_legacy.h"
MODULE_AUTHOR("Gareth Hughes, Leif Delgass, José Fonseca, Jon Smirl");
MODULE_DESCRIPTION("DRM shared core routines");
@@ -585,8 +584,6 @@ static void drm_fs_inode_free(struct inode *inode)
static void drm_dev_init_release(struct drm_device *dev, void *res)
{
drm_legacy_ctxbitmap_cleanup(dev);
drm_legacy_remove_map_hash(dev);
drm_fs_inode_free(dev->anon_inode);
put_device(dev->dev);
@@ -597,7 +594,6 @@ static void drm_dev_init_release(struct drm_device *dev, void *res)
mutex_destroy(&dev->clientlist_mutex);
mutex_destroy(&dev->filelist_mutex);
mutex_destroy(&dev->struct_mutex);
drm_legacy_destroy_members(dev);
}
static int drm_dev_init(struct drm_device *dev,
@@ -632,7 +628,6 @@ static int drm_dev_init(struct drm_device *dev,
return -EINVAL;
}
drm_legacy_init_members(dev);
INIT_LIST_HEAD(&dev->filelist);
INIT_LIST_HEAD(&dev->filelist_internal);
INIT_LIST_HEAD(&dev->clientlist);
@@ -673,12 +668,6 @@ static int drm_dev_init(struct drm_device *dev,
goto err;
}
ret = drm_legacy_create_map_hash(dev);
if (ret)
goto err;
drm_legacy_ctxbitmap_init(dev);
if (drm_core_check_feature(dev, DRIVER_GEM)) {
ret = drm_gem_init(dev);
if (ret) {
@@ -996,9 +985,6 @@ EXPORT_SYMBOL(drm_dev_register);
*/
void drm_dev_unregister(struct drm_device *dev)
{
if (drm_core_check_feature(dev, DRIVER_LEGACY))
drm_lastclose(dev);
dev->registered = false;
drm_client_dev_unregister(dev);
@@ -1009,9 +995,6 @@ void drm_dev_unregister(struct drm_device *dev)
if (dev->driver->unload)
dev->driver->unload(dev);
drm_legacy_pci_agp_destroy(dev);
drm_legacy_rmmaps(dev);
remove_compat_control_link(dev);
drm_minor_unregister(dev, DRM_MINOR_ACCEL);
drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
drivers/gpu/drm/drm_file.c
+2 -62
View File
@@ -47,21 +47,12 @@
#include "drm_crtc_internal.h"
#include "drm_internal.h"
#include "drm_legacy.h"
/* from BKL pushdown */
DEFINE_MUTEX(drm_global_mutex);
bool drm_dev_needs_global_mutex(struct drm_device *dev)
{
/*
* Legacy drivers rely on all kinds of BKL locking semantics, don't
* bother. They also still need BKL locking for their ioctls, so better
* safe than sorry.
*/
if (drm_core_check_feature(dev, DRIVER_LEGACY))
return true;
/*
* The deprecated ->load callback must be called after the driver is
* already registered. This means such drivers rely on the BKL to make
@@ -107,9 +98,7 @@ bool drm_dev_needs_global_mutex(struct drm_device *dev)
* drm_send_event() as the main starting points.
*
* The memory mapping implementation will vary depending on how the driver
* manages memory. Legacy drivers will use the deprecated drm_legacy_mmap()
* function, modern drivers should use one of the provided memory-manager
* specific implementations. For GEM-based drivers this is drm_gem_mmap().
* manages memory. For GEM-based drivers this is drm_gem_mmap().
*
* No other file operations are supported by the DRM userspace API. Overall the
* following is an example &file_operations structure::
@@ -254,18 +243,6 @@ void drm_file_free(struct drm_file *file)
(long)old_encode_dev(file->minor->kdev->devt),
atomic_read(&dev->open_count));
#ifdef CONFIG_DRM_LEGACY
if (drm_core_check_feature(dev, DRIVER_LEGACY) &&
dev->driver->preclose)
dev->driver->preclose(dev, file);
#endif
if (drm_core_check_feature(dev, DRIVER_LEGACY))
drm_legacy_lock_release(dev, file->filp);
if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
drm_legacy_reclaim_buffers(dev, file);
drm_events_release(file);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
@@ -279,8 +256,6 @@ void drm_file_free(struct drm_file *file)
if (drm_core_check_feature(dev, DRIVER_GEM))
drm_gem_release(dev, file);
drm_legacy_ctxbitmap_flush(dev, file);
if (drm_is_primary_client(file))
drm_master_release(file);
@@ -367,29 +342,6 @@ int drm_open_helper(struct file *filp, struct drm_minor *minor)
list_add(&priv->lhead, &dev->filelist);
mutex_unlock(&dev->filelist_mutex);
#ifdef CONFIG_DRM_LEGACY
#ifdef __alpha__
/*
* Default the hose
*/
if (!dev->hose) {
struct pci_dev *pci_dev;
pci_dev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, NULL);
if (pci_dev) {
dev->hose = pci_dev->sysdata;
pci_dev_put(pci_dev);
}
if (!dev->hose) {
struct pci_bus *b = list_entry(pci_root_buses.next,
struct pci_bus, node);
if (b)
dev->hose = b->sysdata;
}
}
#endif
#endif
return 0;
}
@@ -411,7 +363,6 @@ int drm_open(struct inode *inode, struct file *filp)
struct drm_device *dev;
struct drm_minor *minor;
int retcode;
int need_setup = 0;
minor = drm_minor_acquire(iminor(inode));
if (IS_ERR(minor))
@@ -421,8 +372,7 @@ int drm_open(struct inode *inode, struct file *filp)
if (drm_dev_needs_global_mutex(dev))
mutex_lock(&drm_global_mutex);
if (!atomic_fetch_inc(&dev->open_count))
need_setup = 1;
atomic_fetch_inc(&dev->open_count);
/* share address_space across all char-devs of a single device */
filp->f_mapping = dev->anon_inode->i_mapping;
@@ -430,13 +380,6 @@ int drm_open(struct inode *inode, struct file *filp)
retcode = drm_open_helper(filp, minor);
if (retcode)
goto err_undo;
if (need_setup) {
retcode = drm_legacy_setup(dev);
if (retcode) {
drm_close_helper(filp);
goto err_undo;
}
}
if (drm_dev_needs_global_mutex(dev))
mutex_unlock(&drm_global_mutex);
@@ -460,9 +403,6 @@ void drm_lastclose(struct drm_device * dev)
dev->driver->lastclose(dev);
drm_dbg_core(dev, "driver lastclose completed\n");
if (drm_core_check_feature(dev, DRIVER_LEGACY))
drm_legacy_dev_reinit(dev);
drm_client_dev_restore(dev);
}
drivers/gpu/drm/drm_vblank.c
-19
View File
@@ -210,11 +210,6 @@ static u32 __get_vblank_counter(struct drm_device *dev, unsigned int pipe)
if (crtc->funcs->get_vblank_counter)
return crtc->funcs->get_vblank_counter(crtc);
}
#ifdef CONFIG_DRM_LEGACY
else if (dev->driver->get_vblank_counter) {
return dev->driver->get_vblank_counter(dev, pipe);
}
#endif
return drm_vblank_no_hw_counter(dev, pipe);
}
@@ -433,11 +428,6 @@ static void __disable_vblank(struct drm_device *dev, unsigned int pipe)
if (crtc->funcs->disable_vblank)
crtc->funcs->disable_vblank(crtc);
}
#ifdef CONFIG_DRM_LEGACY
else {
dev->driver->disable_vblank(dev, pipe);
}
#endif
}
/*
@@ -1151,11 +1141,6 @@ static int __enable_vblank(struct drm_device *dev, unsigned int pipe)
if (crtc->funcs->enable_vblank)
return crtc->funcs->enable_vblank(crtc);
}
#ifdef CONFIG_DRM_LEGACY
else if (dev->driver->enable_vblank) {
return dev->driver->enable_vblank(dev, pipe);
}
#endif
return -EINVAL;
}
@@ -1698,10 +1683,6 @@ static void drm_wait_vblank_reply(struct drm_device *dev, unsigned int pipe,
static bool drm_wait_vblank_supported(struct drm_device *dev)
{
#if IS_ENABLED(CONFIG_DRM_LEGACY)
if (unlikely(drm_core_check_feature(dev, DRIVER_LEGACY)))
return dev->irq_enabled;
#endif
return drm_dev_has_vblank(dev);
}