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drm/radeon: make MMU_NOTIFIER optional

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In cases where MMU_NOTIFIER is not available, userptr will not be
available.  Similar to i915, although not making an exception for
CAP_SYS_ADMIN.

The proposed userspace patches for userptr seem to handle the fall-
back properly, so a userptr-less kernel should not be a problem.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rob Clark 2015-01-21 17:49:59 -05:00 committed by Alex Deucher
parent 308de41ba3
commit 5a1aa4b447
3 changed files with 11 additions and 2 deletions
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1
drivers/gpu/drm/Kconfig
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@ -110,7 +110,6 @@ config DRM_RADEON
select HWMON
select BACKLIGHT_CLASS_DEVICE
select INTERVAL_TREE
select MMU_NOTIFIER
help
Choose this option if you have an ATI Radeon graphics card. There
are both PCI and AGP versions. You don't need to choose this to

4
drivers/gpu/drm/radeon/Makefile
View File

@ -80,9 +80,11 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \
r600_dpm.o rs780_dpm.o rv6xx_dpm.o rv770_dpm.o rv730_dpm.o rv740_dpm.o \
rv770_smc.o cypress_dpm.o btc_dpm.o sumo_dpm.o sumo_smc.o trinity_dpm.o \
trinity_smc.o ni_dpm.o si_smc.o si_dpm.o kv_smc.o kv_dpm.o ci_smc.o \
ci_dpm.o dce6_afmt.o radeon_vm.o radeon_ucode.o radeon_ib.o radeon_mn.o \
ci_dpm.o dce6_afmt.o radeon_vm.o radeon_ucode.o radeon_ib.o \
radeon_sync.o radeon_audio.o
radeon-$(CONFIG_MMU_NOTIFIER) += radeon_mn.o
# add async DMA block
radeon-y += \
r600_dma.o \

8
drivers/gpu/drm/radeon/radeon.h
View File

@ -1780,8 +1780,16 @@ void radeon_test_syncing(struct radeon_device *rdev);
/*
* MMU Notifier
*/
#if defined(CONFIG_MMU_NOTIFIER)
int radeon_mn_register(struct radeon_bo *bo, unsigned long addr);
void radeon_mn_unregister(struct radeon_bo *bo);
#else
static inline int radeon_mn_register(struct radeon_bo *bo, unsigned long addr)
{
return -ENODEV;
}
static inline void radeon_mn_unregister(struct radeon_bo *bo) {}
#endif
/*
* Debugfs