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/*
* Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors:
* Zhi Wang <zhi.a.wang@intel.com>
*
* Contributors:
* Ping Gao <ping.a.gao@intel.com>
* Tina Zhang <tina.zhang@intel.com>
* Chanbin Du <changbin.du@intel.com>
* Min He <min.he@intel.com>
* Bing Niu <bing.niu@intel.com>
* Zhenyu Wang <zhenyuw@linux.intel.com>
*
*/
#ifndef _GVT_SCHEDULER_H_
#define _GVT_SCHEDULER_H_
struct intel_gvt_workload_scheduler {
struct intel_vgpu *current_vgpu;
struct intel_vgpu *next_vgpu;
struct intel_vgpu_workload *current_workload[I915_NUM_ENGINES];
bool need_reschedule;
spinlock_t mmio_context_lock;
/* can be null when owner is host */
struct intel_vgpu *engine_owner[I915_NUM_ENGINES];
wait_queue_head_t workload_complete_wq;
struct task_struct *thread[I915_NUM_ENGINES];
wait_queue_head_t waitq[I915_NUM_ENGINES];
void *sched_data;
struct intel_gvt_sched_policy_ops *sched_ops;
};
#define INDIRECT_CTX_ADDR_MASK 0xffffffc0
#define INDIRECT_CTX_SIZE_MASK 0x3f
struct shadow_indirect_ctx {
struct drm_i915_gem_object *obj;
unsigned long guest_gma;
unsigned long shadow_gma;
void *shadow_va;
uint32_t size;
};
#define PER_CTX_ADDR_MASK 0xfffff000
struct shadow_per_ctx {
unsigned long guest_gma;
unsigned long shadow_gma;
unsigned valid;
};
struct intel_shadow_wa_ctx {
struct shadow_indirect_ctx indirect_ctx;
struct shadow_per_ctx per_ctx;
};
struct intel_vgpu_workload {
struct intel_vgpu *vgpu;
int ring_id;
struct drm_i915_gem_request *req;
/* if this workload has been dispatched to i915? */
bool dispatched;
bool shadowed;
int status;
struct intel_vgpu_mm *shadow_mm;
/* different submission model may need different handler */
int (*prepare)(struct intel_vgpu_workload *);
int (*complete)(struct intel_vgpu_workload *);
struct list_head list;
DECLARE_BITMAP(pending_events, INTEL_GVT_EVENT_MAX);
void *shadow_ring_buffer_va;
/* execlist context information */
struct execlist_ctx_descriptor_format ctx_desc;
struct execlist_ring_context *ring_context;
unsigned long rb_head, rb_tail, rb_ctl, rb_start, rb_len;
bool restore_inhibit;
struct intel_vgpu_elsp_dwords elsp_dwords;
bool emulate_schedule_in;
atomic_t shadow_ctx_active;
wait_queue_head_t shadow_ctx_status_wq;
u64 ring_context_gpa;
/* shadow batch buffer */
struct list_head shadow_bb;
struct intel_shadow_wa_ctx wa_ctx;
};
/* Intel shadow batch buffer is a i915 gem object */
struct intel_shadow_bb_entry {
struct list_head list;
struct drm_i915_gem_object *obj;
void *va;
unsigned long len;
u32 *bb_start_cmd_va;
};
#define workload_q_head(vgpu, ring_id) \
(&(vgpu->workload_q_head[ring_id]))
#define queue_workload(workload) do { \
list_add_tail(&workload->list, \
workload_q_head(workload->vgpu, workload->ring_id)); \
wake_up(&workload->vgpu->gvt-> \
scheduler.waitq[workload->ring_id]); \
} while (0)
int intel_gvt_init_workload_scheduler(struct intel_gvt *gvt);
void intel_gvt_clean_workload_scheduler(struct intel_gvt *gvt);
void intel_gvt_wait_vgpu_idle(struct intel_vgpu *vgpu);
int intel_vgpu_init_gvt_context(struct intel_vgpu *vgpu);
void intel_vgpu_clean_gvt_context(struct intel_vgpu *vgpu);
void release_shadow_wa_ctx(struct intel_shadow_wa_ctx *wa_ctx);
int intel_gvt_generate_request(struct intel_vgpu_workload *workload);
#endif
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