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Commit 4a3dd19d authored by Ben Widawsky's avatar Ben Widawsky Committed by Daniel Vetter
Browse files

drm/i915: Introduce VECS: the 4th ring 



The video enhancement command streamer is a new ring on HSW which does
what it sounds like it does. This patch provides the most minimal
inception of the ring.

In order to support a new ring, we need to bump the number. The patch
may look trivial to the untrained eye, but bumping the number of rings
is a bit scary. As such the patch is not terribly useful by itself, but
a pretty nice place to find issues during a bisection.

Reviewed-by: default avatarDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: default avatarBen Widawsky <ben@bwidawsk.net>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent ad776f8b

drivers/gpu/drm/i915/intel_ringbuffer.c

+2 −0
Original line number Diff line number Diff line
@@ -915,6 +915,8 @@ void intel_ring_setup_status_page(struct intel_ring_buffer *ring) 
		case VCS:

			mmio = BSD_HWS_PGA_GEN7;

			break;

		case VECS:

			BUG();

		}

	} else if (IS_GEN6(ring->dev)) {

		mmio = RING_HWS_PGA_GEN6(ring->mmio_base);

drivers/gpu/drm/i915/intel_ringbuffer.h

+2 −1
Original line number Diff line number Diff line
@@ -47,8 +47,9 @@ struct intel_ring_buffer { 
		RCS = 0x0,

		VCS,

		BCS,

		VECS,

	} id;

#define I915_NUM_RINGS 3

#define I915_NUM_RINGS 4

	u32		mmio_base;

	void		__iomem *virtual_start;

	struct		drm_device *dev;