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alistair23-linux/drivers/gpu/drm
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Tvrtko Ursulin ca82580c9c drm/i915: Do not call API requiring struct_mutex where it is not available 
LRC code was calling GEM API like i915_gem_obj_ggtt_offset from
places where the struct_mutex cannot be grabbed (irq handlers).

To avoid that this patch caches some interesting bits and values
in the engine and context structures.

Some usages are also removed where they are not needed like a
few asserts which are either impossible or have been checked
already during engine initialization.

Side benefit is also that interrupt handlers and command
submission stop evaluating invariant conditionals, like what
Gen we are running on, on every interrupt and every command
submitted.

This patch deals with logical ring context id and descriptors
while subsequent patches will deal with the remaining issues.

v2:
 * Cache the VMA instead of the address. (Chris Wilson)
 * Incorporate Dave Gordon's good comments and function name.

v3:
 * Extract ctx descriptor template to a function and group
   functions dealing with ctx descriptor & co together near
   top of the file. (Dave Gordon)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Gordon <david.s.gordon@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1452870629-13830-1-git-send-email-tvrtko.ursulin@linux.intel.com
2016-01-18 09:58:36 +00:00
..
amd drm/amdgpu: add missing irq.h include 2016-01-14 08:07:55 +10:00
armada Merge branch 'drm-armada-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next 2015-12-23 09:19:58 +10:00
ast drm: Pass 'name' to drm_encoder_init() 2015-12-11 09:13:20 +01:00
atmel-hlcdc drm: use dev_name as default unique name in drm_dev_alloc() 2015-12-15 13:56:06 +01:00
bochs drm/bochs: Constify function pointer structs 2015-12-15 13:42:36 +01:00
bridge Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
cirrus drm/cirrus: Constify function pointer structs 2015-12-15 13:43:59 +01:00
etnaviv drm/etnaviv: fix workaround for GC500 2016-01-07 11:57:57 +01:00
exynos drm/exynos: fix kernel panic issue at drm releasing 2016-01-13 00:16:39 +09:00
fsl-dcu drm: use dev_name as default unique name in drm_dev_alloc() 2015-12-15 13:56:06 +01:00
gma500 drm/gma500: use to_pci_dev() 2016-01-04 07:57:38 +01:00
i2c Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
i810
i915 drm/i915: Do not call API requiring struct_mutex where it is not available 2016-01-18 09:58:36 +00:00
imx drm/fb_cma_helper: Remove implicit call to disable_unused_functions 2016-01-15 11:16:15 +01:00
mga
mgag200 drm/mgag200: Constify function pointer structs 2015-12-15 13:46:35 +01:00
msm Merge tag 'topic/drm-misc-2015-12-14' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-12-15 10:40:15 +10:00
nouveau drm: nouveau: fix nouveau_debugfs_init prototype 2016-01-14 07:56:41 +10:00
omapdrm drm/omap: remove obsolete manager assignment 2015-12-31 11:25:48 +02:00
panel drm/panel: simple: Add QiaoDian qd43003c0-40 2015-12-16 18:15:26 +01:00
qxl drm/qxl: use to_qxl_bo macro 2015-12-15 13:39:40 +01:00
r128
radeon Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
rcar-du drm: Constify drm_encoder_slave_funcs 2015-12-15 13:41:17 +01:00
rockchip drm: rockchip: Support Synopsys DW MIPI DSI 2016-01-06 16:16:39 +08:00
savage
shmobile drm: Do not set connector->encoder in drivers 2016-01-13 13:30:53 +01:00
sis
sti drm/fb_cma_helper: Remove implicit call to disable_unused_functions 2016-01-15 11:16:15 +01:00
tdfx
tegra Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
tilcdc drm/fb_cma_helper: Remove implicit call to disable_unused_functions 2016-01-15 11:16:15 +01:00
ttm drm/ttm: add ttm_bo_move_to_lru_tail function v2 2016-01-13 12:21:21 -05:00
udl drm/udl: Constify function pointer structs 2015-12-15 13:48:54 +01:00
vc4 Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-01-18 07:01:16 +10:00
vgem
via
virtio drm: Drop drm_helper_probe_single_connector_modes_nomerge() 2015-12-11 09:32:53 +01:00
vmwgfx drm/vmwgfx: Fix a width / pitch mismatch on framebuffer updates 2016-01-14 07:56:46 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic.c drm/atomic: Remove drm_atomic_connectors_for_crtc. 2016-01-06 16:37:39 +01:00
drm_atomic_helper.c drm/atomic: Remove drm_atomic_connectors_for_crtc. 2016-01-06 16:37:39 +01:00
drm_auth.c
drm_bridge.c drm/bridge: Improve kerneldoc 2015-12-08 16:07:53 +01:00
drm_bufs.c
drm_cache.c
drm_context.c
drm_crtc.c drm: Do not set connector->encoder in drivers 2016-01-13 13:30:53 +01:00
drm_crtc_helper.c drm: Add crtc->name and use it in debug messages 2015-12-11 09:13:48 +01:00
drm_crtc_internal.h
drm_debugfs.c
drm_dma.c
drm_dp_helper.c
drm_dp_mst_topology.c drm/dp/mst: fix in RAD element access 2016-01-04 12:11:20 -05:00
drm_drv.c drm: move MODULE_PARM_DESC to other file 2016-01-08 15:32:29 +01:00
drm_edid.c drm/edid: index CEA/HDMI mode tables using the VIC 2016-01-08 15:30:28 +01:00
drm_edid_load.c
drm_encoder_slave.c drm: Constify drm_encoder_slave_funcs 2015-12-15 13:41:17 +01:00
drm_fb_cma_helper.c drm/fb_cma_helper: Remove implicit call to disable_unused_functions 2016-01-15 11:16:15 +01:00
drm_fb_helper.c drm/fb-helper: Use proper plane mask for fb cleanup 2015-12-21 09:54:49 +01:00
drm_flip_work.c
drm_fops.c Linux 4.4-rc4 2015-12-08 11:04:26 +10:00
drm_gem.c drm: Remove opencoded drm_gem_object_release_handle() 2016-01-05 16:23:09 +01:00
drm_gem_cma_helper.c drm: Use the driver's gem_object_free function from CMA helpers. 2015-12-15 10:23:44 +01:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h
drm_ioc32.c
drm_ioctl.c
drm_irq.c drm: move MODULE_PARM_DESC to other file 2016-01-08 15:32:29 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c drm/dsi: Add Turn On/Shutdown Peripheral command helpers 2015-11-24 10:25:14 +01:00
drm_mm.c
drm_modes.c drm/doc: Convert to markdown 2015-12-15 10:22:26 +01:00
drm_modeset_lock.c drm/doc: Convert to markdown 2015-12-15 10:22:26 +01:00
drm_of.c
drm_panel.c
drm_pci.c drm: add drm_pcie_get_max_link_width helper (v2) 2015-12-21 16:42:31 -05:00
drm_plane_helper.c drm: Pass 'name' to drm_universal_plane_init() 2015-12-11 09:13:10 +01:00
drm_platform.c
drm_prime.c drm/doc: Convert to markdown 2015-12-15 10:22:26 +01:00
drm_probe_helper.c drm: Don't overwrite UNVERFIED mode status to OK 2015-12-15 11:00:10 +10:00
drm_rect.c drm: Add "prefix" parameter to drm_rect_debug_print() 2015-11-24 11:47:46 +01:00
drm_scatter.c
drm_sysfs.c drm/sysfs: use kobj_to_dev() 2016-01-13 16:43:07 +01:00
drm_trace.h
drm_trace_points.c
drm_vm.c
drm_vma_manager.c
Kconfig Merge branch 'drm-next-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-next 2015-12-23 14:15:26 +10:00
Makefile drm/etnaviv: add initial etnaviv DRM driver 2015-12-15 14:48:02 +01:00