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 #define GEN8_CSB_ENTRIES 6 29 #define GEN8_CSB_PTR_MASK 0x07 30 31 /* Execlists regs */ 32 #define RING_ELSP(ring) ((ring)->mmio_base+0x230) 33 #define RING_EXECLIST_STATUS(ring) ((ring)->mmio_base+0x234) 34 #define RING_CONTEXT_CONTROL(ring) ((ring)->mmio_base+0x244) 35 #define CTX_CTRL_INHIBIT_SYN_CTX_SWITCH (1 << 3) 36 #define CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT (1 << 0) 37 #define CTX_CTRL_RS_CTX_ENABLE (1 << 1) 38 #define RING_CONTEXT_STATUS_BUF(ring) ((ring)->mmio_base+0x370) 39 #define RING_CONTEXT_STATUS_PTR(ring) ((ring)->mmio_base+0x3a0) 40 41 /* Logical Rings */ 42 int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request); 43 int intel_logical_ring_reserve_space(struct drm_i915_gem_request *request); 44 void intel_logical_ring_stop(struct intel_engine_cs *ring); 45 void intel_logical_ring_cleanup(struct intel_engine_cs *ring); 46 int intel_logical_rings_init(struct drm_device *dev); 47 int intel_logical_ring_begin(struct drm_i915_gem_request *req, int num_dwords); 48 49 int logical_ring_flush_all_caches(struct drm_i915_gem_request *req); 50 /** 51 * intel_logical_ring_advance() - advance the ringbuffer tail 52 * @ringbuf: Ringbuffer to advance. 53 * 54 * The tail is only updated in our logical ringbuffer struct. 55 */ 56 static inline void intel_logical_ring_advance(struct intel_ringbuffer *ringbuf) 57 { 58 ringbuf->tail &= ringbuf->size - 1; 59 } 60 /** 61 * intel_logical_ring_emit() - write a DWORD to the ringbuffer. 62 * @ringbuf: Ringbuffer to write to. 63 * @data: DWORD to write. 64 */ 65 static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf, 66 u32 data) 67 { 68 iowrite32(data, ringbuf->virtual_start + ringbuf->tail); 69 ringbuf->tail += 4; 70 } 71 72 /* Logical Ring Contexts */ 73 void intel_lr_context_free(struct intel_context *ctx); 74 int intel_lr_context_deferred_create(struct intel_context *ctx, 75 struct intel_engine_cs *ring); 76 void intel_lr_context_unpin(struct drm_i915_gem_request *req); 77 void intel_lr_context_reset(struct drm_device *dev, 78 struct intel_context *ctx); 79 80 /* Execlists */ 81 int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists); 82 struct i915_execbuffer_params; 83 int intel_execlists_submission(struct i915_execbuffer_params *params, 84 struct drm_i915_gem_execbuffer2 *args, 85 struct list_head *vmas); 86 u32 intel_execlists_ctx_id(struct drm_i915_gem_object *ctx_obj); 87 88 void intel_lrc_irq_handler(struct intel_engine_cs *ring); 89 void intel_execlists_retire_requests(struct intel_engine_cs *ring); 90 91 #endif /* _INTEL_LRC_H_ */ 92