drm: hide legacy drivers with CONFIG_DRM_LEGACY

Lets move forward and hide the remaining DRI1 drivers behind a config
option, so we have a central place to disable them all. Furthermore, we
can provide a clear warning to anyone enabling them.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160804080657.9664-1-dh.herrmann@gmail.com

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index fe1e86e..cf1609b 100644 (file)
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -108,24 +108,8 @@ config DRM_KMS_CMA_HELPER
 
 source "drivers/gpu/drm/i2c/Kconfig"
 
-config DRM_TDFX
-       tristate "3dfx Banshee/Voodoo3+"
-       depends on DRM && PCI
-       help
-         Choose this option if you have a 3dfx Banshee or Voodoo3 (or later),
-         graphics card.  If M is selected, the module will be called tdfx.
-
 source "drivers/gpu/drm/arm/Kconfig"
 
-config DRM_R128
-       tristate "ATI Rage 128"
-       depends on DRM && PCI
-       select FW_LOADER
-       help
-         Choose this option if you have an ATI Rage 128 graphics card.  If M
-         is selected, the module will be called r128.  AGP support for
-         this card is strongly suggested (unless you have a PCI version).
-
 config DRM_RADEON
        tristate "ATI Radeon"
        depends on DRM && PCI
@@ -169,49 +153,8 @@ source "drivers/gpu/drm/amd/acp/Kconfig"
 
 source "drivers/gpu/drm/nouveau/Kconfig"
 
-config DRM_I810
-       tristate "Intel I810"
-       # !PREEMPT because of missing ioctl locking
-       depends on DRM && AGP && AGP_INTEL && (!PREEMPT || BROKEN)
-       help
-         Choose this option if you have an Intel I810 graphics card.  If M is
-         selected, the module will be called i810.  AGP support is required
-         for this driver to work.
-
 source "drivers/gpu/drm/i915/Kconfig"
 
-config DRM_MGA
-       tristate "Matrox g200/g400"
-       depends on DRM && PCI
-       select FW_LOADER
-       help
-         Choose this option if you have a Matrox G200, G400 or G450 graphics
-         card.  If M is selected, the module will be called mga.  AGP
-         support is required for this driver to work.
-
-config DRM_SIS
-       tristate "SiS video cards"
-       depends on DRM && AGP
-       depends on FB_SIS || FB_SIS=n
-       help
-         Choose this option if you have a SiS 630 or compatible video
-          chipset. If M is selected the module will be called sis. AGP
-          support is required for this driver to work.
-
-config DRM_VIA
-       tristate "Via unichrome video cards"
-       depends on DRM && PCI
-       help
-         Choose this option if you have a Via unichrome or compatible video
-         chipset. If M is selected the module will be called via.
-
-config DRM_SAVAGE
-       tristate "Savage video cards"
-       depends on DRM && PCI
-       help
-         Choose this option if you have a Savage3D/4/SuperSavage/Pro/Twister
-         chipset. If M is selected the module will be called savage.
-
 config DRM_VGEM
        tristate "Virtual GEM provider"
        depends on DRM
@@ -282,3 +225,81 @@ source "drivers/gpu/drm/arc/Kconfig"
 source "drivers/gpu/drm/hisilicon/Kconfig"
 
 source "drivers/gpu/drm/mediatek/Kconfig"
+
+# Keep legacy drivers last
+
+menuconfig DRM_LEGACY
+       bool "Enable legacy drivers (DANGEROUS)"
+       depends on DRM
+       help
+         Enable legacy DRI1 drivers. Those drivers expose unsafe and dangerous
+         APIs to user-space, which can be used to circumvent access
+         restrictions and other security measures. For backwards compatibility
+         those drivers are still available, but their use is highly
+         inadvisable and might harm your system.
+
+         You are recommended to use the safe modeset-only drivers instead, and
+         perform 3D emulation in user-space.
+
+         Unless you have strong reasons to go rogue, say "N".
+
+if DRM_LEGACY
+
+config DRM_TDFX
+       tristate "3dfx Banshee/Voodoo3+"
+       depends on DRM && PCI
+       help
+         Choose this option if you have a 3dfx Banshee or Voodoo3 (or later),
+         graphics card.  If M is selected, the module will be called tdfx.
+
+config DRM_R128
+       tristate "ATI Rage 128"
+       depends on DRM && PCI
+       select FW_LOADER
+       help
+         Choose this option if you have an ATI Rage 128 graphics card.  If M
+         is selected, the module will be called r128.  AGP support for
+         this card is strongly suggested (unless you have a PCI version).
+
+config DRM_I810
+       tristate "Intel I810"
+       # !PREEMPT because of missing ioctl locking
+       depends on DRM && AGP && AGP_INTEL && (!PREEMPT || BROKEN)
+       help
+         Choose this option if you have an Intel I810 graphics card.  If M is
+         selected, the module will be called i810.  AGP support is required
+         for this driver to work.
+
+config DRM_MGA
+       tristate "Matrox g200/g400"
+       depends on DRM && PCI
+       select FW_LOADER
+       help
+         Choose this option if you have a Matrox G200, G400 or G450 graphics
+         card.  If M is selected, the module will be called mga.  AGP
+         support is required for this driver to work.
+
+config DRM_SIS
+       tristate "SiS video cards"
+       depends on DRM && AGP
+       depends on FB_SIS || FB_SIS=n
+       help
+         Choose this option if you have a SiS 630 or compatible video
+         chipset. If M is selected the module will be called sis. AGP
+         support is required for this driver to work.
+
+config DRM_VIA
+       tristate "Via unichrome video cards"
+       depends on DRM && PCI
+       help
+         Choose this option if you have a Via unichrome or compatible video
+         chipset. If M is selected the module will be called via.
+
+config DRM_SAVAGE
+       tristate "Savage video cards"
+       depends on DRM && PCI
+       help
+         Choose this option if you have a Savage3D/4/SuperSavage/Pro/Twister
+         chipset. If M is selected the module will be called savage.
+
+endif # DRM_LEGACY