Oscar Mateo | b20385f | 2014-07-24 17:04:10 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2014 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Ben Widawsky <ben@bwidawsk.net> |
| 25 | * Michel Thierry <michel.thierry@intel.com> |
| 26 | * Thomas Daniel <thomas.daniel@intel.com> |
| 27 | * Oscar Mateo <oscar.mateo@intel.com> |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * GEN8 brings an expansion of the HW contexts: "Logical Ring Contexts". |
| 33 | * These expanded contexts enable a number of new abilities, especially |
| 34 | * "Execlists" (also implemented in this file). |
| 35 | * |
| 36 | * Execlists are the new method by which, on gen8+ hardware, workloads are |
| 37 | * submitted for execution (as opposed to the legacy, ringbuffer-based, method). |
| 38 | */ |
| 39 | |
| 40 | #include <drm/drmP.h> |
| 41 | #include <drm/i915_drm.h> |
| 42 | #include "i915_drv.h" |
Oscar Mateo | 127f100 | 2014-07-24 17:04:11 +0100 | [diff] [blame] | 43 | |
| 44 | int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists) |
| 45 | { |
Daniel Vetter | bd84b1e | 2014-08-11 15:57:57 +0200 | [diff] [blame^] | 46 | WARN_ON(i915.enable_ppgtt == -1); |
| 47 | |
Oscar Mateo | 127f100 | 2014-07-24 17:04:11 +0100 | [diff] [blame] | 48 | if (enable_execlists == 0) |
| 49 | return 0; |
| 50 | |
| 51 | if (HAS_LOGICAL_RING_CONTEXTS(dev) && USES_PPGTT(dev)) |
| 52 | return 1; |
| 53 | |
| 54 | return 0; |
| 55 | } |