[PATCH 10/14] drm: Remove support for legacy drivers
Alex Deucher
alexdeucher at gmail.com
Mon Nov 27 21:05:25 UTC 2023
On Wed, Nov 22, 2023 at 7:25 AM Thomas Zimmermann <tzimmermann at suse.de> wrote:
>
> 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 at suse.de>
Acked-by: Alex Deucher <alexander.deucher at amd.com>
> ---
> drivers/gpu/drm/drm_auth.c | 8 +----
> drivers/gpu/drm/drm_drv.c | 17 ----------
> drivers/gpu/drm/drm_file.c | 64 ++----------------------------------
> drivers/gpu/drm/drm_vblank.c | 19 -----------
> 4 files changed, 3 insertions(+), 105 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c
> index 2ed2585ded378..252c105d614ff 100644
> --- a/drivers/gpu/drm/drm_auth.c
> +++ b/drivers/gpu/drm/drm_auth.c
> @@ -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);
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index 535f16e7882e7..979366e68dbb8 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -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) {
> @@ -990,9 +979,6 @@ 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);
> @@ -1003,9 +989,6 @@ 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);
> diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
> index 5ddaffd325865..987c1a5d1773b 100644
> --- a/drivers/gpu/drm/drm_file.c
> +++ b/drivers/gpu/drm/drm_file.c
> @@ -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);
> }
>
> diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c
> index a11f164b2384f..702a12bc93bd9 100644
> --- a/drivers/gpu/drm/drm_vblank.c
> +++ b/drivers/gpu/drm/drm_vblank.c
> @@ -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);
> }
>
> --
> 2.42.1
>
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