From 6922528a04a810b2889e82a4dc17eab920379117 Mon Sep 17 00:00:00 2001 From: Abdiel Janulgue Date: Tue, 16 Jun 2015 13:39:42 +0300 Subject: [PATCH] drm/i915: Enable resource streamer on Execlists GEN8 and above uses Execlists by default instead of the legacy ringbuffer for batch execution. This patch enables the resource streamer bits when required. Patch is based on the initial work by Minu Mathai This version also adds the required bits to enable GEN8 Resource Streamer context save and restore for Execlists. Cc: ville.syrjala@linux.intel.com Signed-off-by: Abdiel Janulgue Reviewed-by: Arun Siluvery Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_lrc.c | 8 ++++++-- drivers/gpu/drm/i915/intel_lrc.h | 1 + 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 22e9f85f40e4..0160bec1e7ba 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1426,7 +1426,10 @@ static int gen8_emit_bb_start(struct drm_i915_gem_request *req, return ret; /* FIXME(BDW): Address space and security selectors. */ - intel_logical_ring_emit(ringbuf, MI_BATCH_BUFFER_START_GEN8 | (ppgtt<<8)); + intel_logical_ring_emit(ringbuf, MI_BATCH_BUFFER_START_GEN8 | + (ppgtt<<8) | + (dispatch_flags & I915_DISPATCH_RS ? + MI_BATCH_RESOURCE_STREAMER : 0)); intel_logical_ring_emit(ringbuf, lower_32_bits(offset)); intel_logical_ring_emit(ringbuf, upper_32_bits(offset)); intel_logical_ring_emit(ringbuf, MI_NOOP); @@ -2019,7 +2022,8 @@ populate_lr_context(struct intel_context *ctx, struct drm_i915_gem_object *ctx_o reg_state[CTX_CONTEXT_CONTROL] = RING_CONTEXT_CONTROL(ring); reg_state[CTX_CONTEXT_CONTROL+1] = _MASKED_BIT_ENABLE(CTX_CTRL_INHIBIT_SYN_CTX_SWITCH | - CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT); + CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT | + CTX_CTRL_RS_CTX_ENABLE); reg_state[CTX_RING_HEAD] = RING_HEAD(ring->mmio_base); reg_state[CTX_RING_HEAD+1] = 0; reg_state[CTX_RING_TAIL] = RING_TAIL(ring->mmio_base); diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h index f59940ac1cfc..d3dd3ac33aef 100644 --- a/drivers/gpu/drm/i915/intel_lrc.h +++ b/drivers/gpu/drm/i915/intel_lrc.h @@ -32,6 +32,7 @@ #define RING_CONTEXT_CONTROL(ring) ((ring)->mmio_base+0x244) #define CTX_CTRL_INHIBIT_SYN_CTX_SWITCH (1 << 3) #define CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT (1 << 0) +#define CTX_CTRL_RS_CTX_ENABLE (1 << 1) #define RING_CONTEXT_STATUS_BUF(ring) ((ring)->mmio_base+0x370) #define RING_CONTEXT_STATUS_PTR(ring) ((ring)->mmio_base+0x3a0) -- 2.20.1