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authorSourab Gupta <sourab.gupta@intel.com>2014-06-02 16:47:17 +0530
committerDaniel Vetter <daniel.vetter@ffwll.ch>2014-06-17 16:16:20 +0200
commit84c33a64b4e29757d04ba1b285b96ee160d5ff93 (patch)
treef9f4db1e9ab6eac283676bb0c9ae0c2311802ef9 /drivers/gpu/drm/i915/intel_drv.h
parentf02a326e32edae40e7837824db6d1b3aae7c29b2 (diff)
downloadlinux-stericsson-84c33a64b4e29757d04ba1b285b96ee160d5ff93.tar.gz
drm/i915: Replaced Blitter ring based flips with MMIO flips
This patch enables the framework for using MMIO based flip calls, in contrast with the CS based flip calls which are being used currently. MMIO based flip calls can be enabled on architectures where Render and Blitter engines reside in different power wells. The decision to use MMIO flips can be made based on workloads to give 100% residency for Media power well. v2: The MMIO flips now use the interrupt driven mechanism for issuing the flips when target seqno is reached. (Incorporating Ville's idea) v3: Rebasing on latest code. Code restructuring after incorporating Damien's comments v4: Addressing Ville's review comments -general cleanup -updating only base addr instead of calling update_primary_plane -extending patch for gen5+ platforms v5: Addressed Ville's review comments -Making mmio flip vs cs flip selection based on module parameter -Adding check for DRIVER_MODESET feature in notify_ring before calling notify mmio flip. -Other changes mostly in function arguments v6: -Having a seperate function to check condition for using mmio flips (Ville) -propogating error code from i915_gem_check_olr (Ville) v7: -Adding __must_check with i915_gem_check_olr (Chris) -Renaming mmio_flip_data to mmio_flip (Chris) -Rebasing on latest nightly v8: -Rebasing on latest code -squash 3rd patch in series(mmio setbase vs page flip race) with this patch -Added new tiling mode update in intel_do_mmio_flip (Chris) v9: -check for obj->last_write_seqno being 0 instead of obj->ring being NULL in intel_postpone_flip, as this is a more restrictive condition (Chris) v10: -Applied Chris's suggestions for squashing patches 2,3 into this patch. These patches make the selection of CS vs MMIO flip at the page flip time, and make the module parameter for using mmio flips as tristate, the states being 'force CS flips', 'force mmio flips', 'driver discretion'. Changed the logic for driver discretion (Chris) v11: Minor code cleanup(better readability, fixing whitespace errors, using lockdep to check mutex locked status in postpone_flip, removal of __must_check in function definition) (Chris) Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Sourab Gupta <sourab.gupta@intel.com> Signed-off-by: Akash Goel <akash.goel@intel.com> Tested-by: Chris Wilson <chris@chris-wilson.co.uk> # snb, ivb [danvet: Fix up parameter alignement checkpatch spotted.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_drv.h')
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 9aa95f01b160..cac753932032 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -358,6 +358,11 @@ struct intel_pipe_wm {
bool sprites_scaled;
};
+struct intel_mmio_flip {
+ u32 seqno;
+ u32 ring_id;
+};
+
struct intel_crtc {
struct drm_crtc base;
enum pipe pipe;
@@ -411,6 +416,7 @@ struct intel_crtc {
wait_queue_head_t vbl_wait;
int scanline_offset;
+ struct intel_mmio_flip mmio_flip;
};
struct intel_plane_wm_parameters {