LXR linux/drivers/gpu/drm/i915/gvt/scheduler.h

   1/*
   2 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
   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 FROM,
  20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21 * SOFTWARE.
  22 *
  23 * Authors:
  24 *    Zhi Wang <zhi.a.wang@intel.com>
  25 *
  26 * Contributors:
  27 *    Ping Gao <ping.a.gao@intel.com>
  28 *    Tina Zhang <tina.zhang@intel.com>
  29 *    Chanbin Du <changbin.du@intel.com>
  30 *    Min He <min.he@intel.com>
  31 *    Bing Niu <bing.niu@intel.com>
  32 *    Zhenyu Wang <zhenyuw@linux.intel.com>
  33 *
  34 */
  35
  36#ifndef _GVT_SCHEDULER_H_
  37#define _GVT_SCHEDULER_H_
  38
  39struct intel_gvt_workload_scheduler {
  40        struct intel_vgpu *current_vgpu;
  41        struct intel_vgpu *next_vgpu;
  42        struct intel_vgpu_workload *current_workload[I915_NUM_ENGINES];
  43        bool need_reschedule;
  44
  45        spinlock_t mmio_context_lock;
  46        /* can be null when owner is host */
  47        struct intel_vgpu *engine_owner[I915_NUM_ENGINES];
  48
  49        wait_queue_head_t workload_complete_wq;
  50        struct task_struct *thread[I915_NUM_ENGINES];
  51        wait_queue_head_t waitq[I915_NUM_ENGINES];
  52
  53        void *sched_data;
  54        struct intel_gvt_sched_policy_ops *sched_ops;
  55};
  56
  57#define INDIRECT_CTX_ADDR_MASK 0xffffffc0
  58#define INDIRECT_CTX_SIZE_MASK 0x3f
  59struct shadow_indirect_ctx {
  60        struct drm_i915_gem_object *obj;
  61        unsigned long guest_gma;
  62        unsigned long shadow_gma;
  63        void *shadow_va;
  64        u32 size;
  65};
  66
  67#define PER_CTX_ADDR_MASK 0xfffff000
  68struct shadow_per_ctx {
  69        unsigned long guest_gma;
  70        unsigned long shadow_gma;
  71        unsigned valid;
  72};
  73
  74struct intel_shadow_wa_ctx {
  75        struct shadow_indirect_ctx indirect_ctx;
  76        struct shadow_per_ctx per_ctx;
  77
  78};
  79
  80struct intel_vgpu_workload {
  81        struct intel_vgpu *vgpu;
  82        const struct intel_engine_cs *engine;
  83        struct i915_request *req;
  84        /* if this workload has been dispatched to i915? */
  85        bool dispatched;
  86        bool shadow;      /* if workload has done shadow of guest request */
  87        int status;
  88
  89        struct intel_vgpu_mm *shadow_mm;
  90        struct list_head lri_shadow_mm; /* For PPGTT load cmd */
  91
  92        /* different submission model may need different handler */
  93        int (*prepare)(struct intel_vgpu_workload *);
  94        int (*complete)(struct intel_vgpu_workload *);
  95        struct list_head list;
  96
  97        DECLARE_BITMAP(pending_events, INTEL_GVT_EVENT_MAX);
  98        void *shadow_ring_buffer_va;
  99
 100        /* execlist context information */
 101        struct execlist_ctx_descriptor_format ctx_desc;
 102        struct execlist_ring_context *ring_context;
 103        unsigned long rb_head, rb_tail, rb_ctl, rb_start, rb_len;
 104        unsigned long guest_rb_head;
 105        bool restore_inhibit;
 106        struct intel_vgpu_elsp_dwords elsp_dwords;
 107        bool emulate_schedule_in;
 108        atomic_t shadow_ctx_active;
 109        wait_queue_head_t shadow_ctx_status_wq;
 110        u64 ring_context_gpa;
 111
 112        /* shadow batch buffer */
 113        struct list_head shadow_bb;
 114        struct intel_shadow_wa_ctx wa_ctx;
 115
 116        /* oa registers */
 117        u32 oactxctrl;
 118        u32 flex_mmio[7];
 119};
 120
 121struct intel_vgpu_shadow_bb {
 122        struct list_head list;
 123        struct drm_i915_gem_object *obj;
 124        struct i915_vma *vma;
 125        void *va;
 126        u32 *bb_start_cmd_va;
 127        unsigned long bb_offset;
 128        bool ppgtt;
 129};
 130
 131#define workload_q_head(vgpu, e) \
 132        (&(vgpu)->submission.workload_q_head[(e)->id])
 133
 134void intel_vgpu_queue_workload(struct intel_vgpu_workload *workload);
 135
 136int intel_gvt_init_workload_scheduler(struct intel_gvt *gvt);
 137
 138void intel_gvt_clean_workload_scheduler(struct intel_gvt *gvt);
 139
 140void intel_gvt_wait_vgpu_idle(struct intel_vgpu *vgpu);
 141
 142int intel_vgpu_setup_submission(struct intel_vgpu *vgpu);
 143
 144void intel_vgpu_reset_submission(struct intel_vgpu *vgpu,
 145                                 intel_engine_mask_t engine_mask);
 146
 147void intel_vgpu_clean_submission(struct intel_vgpu *vgpu);
 148
 149int intel_vgpu_select_submission_ops(struct intel_vgpu *vgpu,
 150                                     intel_engine_mask_t engine_mask,
 151                                     unsigned int interface);
 152
 153extern const struct intel_vgpu_submission_ops
 154intel_vgpu_execlist_submission_ops;
 155
 156struct intel_vgpu_workload *
 157intel_vgpu_create_workload(struct intel_vgpu *vgpu,
 158                           const struct intel_engine_cs *engine,
 159                           struct execlist_ctx_descriptor_format *desc);
 160
 161void intel_vgpu_destroy_workload(struct intel_vgpu_workload *workload);
 162
 163void intel_vgpu_clean_workloads(struct intel_vgpu *vgpu,
 164                                intel_engine_mask_t engine_mask);
 165
 166#endif
 167