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 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 #ifndef _INTEL_LRC_H_ 25 #define _INTEL_LRC_H_ 26 27 #define GEN8_LR_CONTEXT_ALIGN 4096 28 29 /* Execlists regs */ 30 #define RING_ELSP(ring) ((ring)->mmio_base+0x230) 31 #define RING_EXECLIST_STATUS(ring) ((ring)->mmio_base+0x234) 32 #define RING_CONTEXT_CONTROL(ring) ((ring)->mmio_base+0x244) 33 #define CTX_CTRL_INHIBIT_SYN_CTX_SWITCH (1 << 3) 34 #define CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT (1 << 0) 35 #define RING_CONTEXT_STATUS_BUF(ring) ((ring)->mmio_base+0x370) 36 #define RING_CONTEXT_STATUS_PTR(ring) ((ring)->mmio_base+0x3a0) 37 38 /* Logical Rings */ 39 void intel_logical_ring_stop(struct intel_engine_cs *ring); 40 void intel_logical_ring_cleanup(struct intel_engine_cs *ring); 41 int intel_logical_rings_init(struct drm_device *dev); 42 43 int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf, 44 struct intel_context *ctx); 45 /** 46 * intel_logical_ring_advance() - advance the ringbuffer tail 47 * @ringbuf: Ringbuffer to advance. 48 * 49 * The tail is only updated in our logical ringbuffer struct. 50 */ 51 static inline void intel_logical_ring_advance(struct intel_ringbuffer *ringbuf) 52 { 53 ringbuf->tail &= ringbuf->size - 1; 54 } 55 /** 56 * intel_logical_ring_emit() - write a DWORD to the ringbuffer. 57 * @ringbuf: Ringbuffer to write to. 58 * @data: DWORD to write. 59 */ 60 static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf, 61 u32 data) 62 { 63 iowrite32(data, ringbuf->virtual_start + ringbuf->tail); 64 ringbuf->tail += 4; 65 } 66 int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, 67 struct intel_context *ctx, 68 int num_dwords); 69 70 /* Logical Ring Contexts */ 71 void intel_lr_context_free(struct intel_context *ctx); 72 int intel_lr_context_deferred_create(struct intel_context *ctx, 73 struct intel_engine_cs *ring); 74 void intel_lr_context_unpin(struct intel_engine_cs *ring, 75 struct intel_context *ctx); 76 void intel_lr_context_reset(struct drm_device *dev, 77 struct intel_context *ctx); 78 79 /* Execlists */ 80 int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists); 81 int intel_execlists_submission(struct drm_device *dev, struct drm_file *file, 82 struct intel_engine_cs *ring, 83 struct intel_context *ctx, 84 struct drm_i915_gem_execbuffer2 *args, 85 struct list_head *vmas, 86 struct drm_i915_gem_object *batch_obj, 87 u64 exec_start, u32 dispatch_flags); 88 u32 intel_execlists_ctx_id(struct drm_i915_gem_object *ctx_obj); 89 90 void intel_lrc_irq_handler(struct intel_engine_cs *ring); 91 void intel_execlists_retire_requests(struct intel_engine_cs *ring); 92 93 #endif /* _INTEL_LRC_H_ */ 94