vgpu->resetting = true;
+ intel_vgpu_stop_schedule(vgpu);
if (scheduler->current_vgpu == vgpu) {
mutex_unlock(&vgpu->gvt->lock);
intel_gvt_wait_vgpu_idle(vgpu);
return 0;
}
+static int ring_mode_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
+ void *p_data, unsigned int bytes)
+{
+ u32 data = *(u32 *)p_data;
+ int ring_id = render_mmio_to_ring_id(vgpu->gvt, offset);
+ bool enable_execlist;
+
+ write_vreg(vgpu, offset, p_data, bytes);
+ if ((data & _MASKED_BIT_ENABLE(GFX_RUN_LIST_ENABLE))
+ || (data & _MASKED_BIT_DISABLE(GFX_RUN_LIST_ENABLE))) {
+ enable_execlist = !!(data & GFX_RUN_LIST_ENABLE);
+
+ gvt_dbg_core("EXECLIST %s on ring %d\n",
+ (enable_execlist ? "enabling" : "disabling"),
+ ring_id);
+
+ if (enable_execlist)
+ intel_vgpu_start_schedule(vgpu);
+ }
+ return 0;
+}
+
#define MMIO_F(reg, s, f, am, rm, d, r, w) do { \
ret = new_mmio_info(gvt, INTEL_GVT_MMIO_OFFSET(reg), \
f, s, am, rm, d, r, w); \
/* RING MODE */
#define RING_REG(base) (base + 0x29c)
- MMIO_RING_DFH(RING_REG, D_ALL, F_MODE_MASK, NULL, NULL);
+ MMIO_RING_DFH(RING_REG, D_ALL, F_MODE_MASK, NULL, ring_mode_mmio_write);
#undef RING_REG
MMIO_RING_DFH(RING_MI_MODE, D_ALL, F_MODE_MASK, NULL, NULL);
MMIO_D(RING_CTL(GEN8_BSD2_RING_BASE), D_BDW_PLUS);
MMIO_D(RING_ACTHD(GEN8_BSD2_RING_BASE), D_BDW_PLUS);
MMIO_D(RING_ACTHD_UDW(GEN8_BSD2_RING_BASE), D_BDW_PLUS);
- MMIO_DFH(0x1c29c, D_BDW_PLUS, F_MODE_MASK, NULL, NULL);
+ MMIO_DFH(0x1c29c, D_BDW_PLUS, F_MODE_MASK, NULL, ring_mode_mmio_write);
MMIO_DFH(RING_MI_MODE(GEN8_BSD2_RING_BASE), D_BDW_PLUS, F_MODE_MASK,
NULL, NULL);
MMIO_DFH(RING_INSTPM(GEN8_BSD2_RING_BASE), D_BDW_PLUS, F_MODE_MASK,
--- /dev/null
+/*
+ * 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:
+ * Anhua Xu
+ * Kevin Tian <kevin.tian@intel.com>
+ *
+ * Contributors:
+ * Min He <min.he@intel.com>
+ * Bing Niu <bing.niu@intel.com>
+ * Zhi Wang <zhi.a.wang@intel.com>
+ *
+ */
+
+#include "i915_drv.h"
+
+static bool vgpu_has_pending_workload(struct intel_vgpu *vgpu)
+{
+ struct intel_vgpu_execlist *execlist;
+ int i;
+
+ for (i = 0; i < I915_NUM_ENGINES; i++) {
+ execlist = &vgpu->execlist[i];
+ if (!list_empty(workload_q_head(vgpu, i)))
+ return true;
+ }
+
+ return false;
+}
+
+static void try_to_schedule_next_vgpu(struct intel_gvt *gvt)
+{
+ struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler;
+ int i;
+
+ /* no target to schedule */
+ if (!scheduler->next_vgpu)
+ return;
+
+ gvt_dbg_sched("try to schedule next vgpu %d\n",
+ scheduler->next_vgpu->id);
+
+ /*
+ * after the flag is set, workload dispatch thread will
+ * stop dispatching workload for current vgpu
+ */
+ scheduler->need_reschedule = true;
+
+ /* still have uncompleted workload? */
+ for (i = 0; i < I915_NUM_ENGINES; i++) {
+ if (scheduler->current_workload[i]) {
+ gvt_dbg_sched("still have running workload\n");
+ return;
+ }
+ }
+
+ gvt_dbg_sched("switch to next vgpu %d\n",
+ scheduler->next_vgpu->id);
+
+ /* switch current vgpu */
+ scheduler->current_vgpu = scheduler->next_vgpu;
+ scheduler->next_vgpu = NULL;
+
+ scheduler->need_reschedule = false;
+
+ /* wake up workload dispatch thread */
+ for (i = 0; i < I915_NUM_ENGINES; i++)
+ wake_up(&scheduler->waitq[i]);
+}
+
+struct tbs_vgpu_data {
+ struct list_head list;
+ struct intel_vgpu *vgpu;
+ /* put some per-vgpu sched stats here */
+};
+
+struct tbs_sched_data {
+ struct intel_gvt *gvt;
+ struct delayed_work work;
+ unsigned long period;
+ struct list_head runq_head;
+};
+
+#define GVT_DEFAULT_TIME_SLICE (1 * HZ / 1000)
+
+static void tbs_sched_func(struct work_struct *work)
+{
+ struct tbs_sched_data *sched_data = container_of(work,
+ struct tbs_sched_data, work.work);
+ struct tbs_vgpu_data *vgpu_data;
+
+ struct intel_gvt *gvt = sched_data->gvt;
+ struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler;
+
+ struct intel_vgpu *vgpu = NULL;
+ struct list_head *pos, *head;
+
+ mutex_lock(&gvt->lock);
+
+ /* no vgpu or has already had a target */
+ if (list_empty(&sched_data->runq_head) || scheduler->next_vgpu)
+ goto out;
+
+ if (scheduler->current_vgpu) {
+ vgpu_data = scheduler->current_vgpu->sched_data;
+ head = &vgpu_data->list;
+ } else {
+ gvt_dbg_sched("no current vgpu search from q head\n");
+ head = &sched_data->runq_head;
+ }
+
+ /* search a vgpu with pending workload */
+ list_for_each(pos, head) {
+ if (pos == &sched_data->runq_head)
+ continue;
+
+ vgpu_data = container_of(pos, struct tbs_vgpu_data, list);
+ if (!vgpu_has_pending_workload(vgpu_data->vgpu))
+ continue;
+
+ vgpu = vgpu_data->vgpu;
+ break;
+ }
+
+ if (vgpu) {
+ scheduler->next_vgpu = vgpu;
+ gvt_dbg_sched("pick next vgpu %d\n", vgpu->id);
+ }
+out:
+ if (scheduler->next_vgpu) {
+ gvt_dbg_sched("try to schedule next vgpu %d\n",
+ scheduler->next_vgpu->id);
+ try_to_schedule_next_vgpu(gvt);
+ }
+
+ /*
+ * still have vgpu on runq
+ * or last schedule haven't finished due to running workload
+ */
+ if (!list_empty(&sched_data->runq_head) || scheduler->next_vgpu)
+ schedule_delayed_work(&sched_data->work, sched_data->period);
+
+ mutex_unlock(&gvt->lock);
+}
+
+static int tbs_sched_init(struct intel_gvt *gvt)
+{
+ struct intel_gvt_workload_scheduler *scheduler =
+ &gvt->scheduler;
+
+ struct tbs_sched_data *data;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&data->runq_head);
+ INIT_DELAYED_WORK(&data->work, tbs_sched_func);
+ data->period = GVT_DEFAULT_TIME_SLICE;
+ data->gvt = gvt;
+
+ scheduler->sched_data = data;
+ return 0;
+}
+
+static void tbs_sched_clean(struct intel_gvt *gvt)
+{
+ struct intel_gvt_workload_scheduler *scheduler =
+ &gvt->scheduler;
+ struct tbs_sched_data *data = scheduler->sched_data;
+
+ cancel_delayed_work(&data->work);
+ kfree(data);
+ scheduler->sched_data = NULL;
+}
+
+static int tbs_sched_init_vgpu(struct intel_vgpu *vgpu)
+{
+ struct tbs_vgpu_data *data;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->vgpu = vgpu;
+ INIT_LIST_HEAD(&data->list);
+
+ vgpu->sched_data = data;
+ return 0;
+}
+
+static void tbs_sched_clean_vgpu(struct intel_vgpu *vgpu)
+{
+ kfree(vgpu->sched_data);
+ vgpu->sched_data = NULL;
+}
+
+static void tbs_sched_start_schedule(struct intel_vgpu *vgpu)
+{
+ struct tbs_sched_data *sched_data = vgpu->gvt->scheduler.sched_data;
+ struct tbs_vgpu_data *vgpu_data = vgpu->sched_data;
+
+ if (!list_empty(&vgpu_data->list))
+ return;
+
+ list_add_tail(&vgpu_data->list, &sched_data->runq_head);
+ schedule_delayed_work(&sched_data->work, sched_data->period);
+}
+
+static void tbs_sched_stop_schedule(struct intel_vgpu *vgpu)
+{
+ struct tbs_vgpu_data *vgpu_data = vgpu->sched_data;
+
+ list_del_init(&vgpu_data->list);
+}
+
+struct intel_gvt_sched_policy_ops tbs_schedule_ops = {
+ .init = tbs_sched_init,
+ .clean = tbs_sched_clean,
+ .init_vgpu = tbs_sched_init_vgpu,
+ .clean_vgpu = tbs_sched_clean_vgpu,
+ .start_schedule = tbs_sched_start_schedule,
+ .stop_schedule = tbs_sched_stop_schedule,
+};
+
+int intel_gvt_init_sched_policy(struct intel_gvt *gvt)
+{
+ gvt->scheduler.sched_ops = &tbs_schedule_ops;
+
+ return gvt->scheduler.sched_ops->init(gvt);
+}
+
+void intel_gvt_clean_sched_policy(struct intel_gvt *gvt)
+{
+ gvt->scheduler.sched_ops->clean(gvt);
+}
+
+int intel_vgpu_init_sched_policy(struct intel_vgpu *vgpu)
+{
+ return vgpu->gvt->scheduler.sched_ops->init_vgpu(vgpu);
+}
+
+void intel_vgpu_clean_sched_policy(struct intel_vgpu *vgpu)
+{
+ vgpu->gvt->scheduler.sched_ops->clean_vgpu(vgpu);
+}
+
+void intel_vgpu_start_schedule(struct intel_vgpu *vgpu)
+{
+ gvt_dbg_core("vgpu%d: start schedule\n", vgpu->id);
+
+ vgpu->gvt->scheduler.sched_ops->start_schedule(vgpu);
+}
+
+void intel_vgpu_stop_schedule(struct intel_vgpu *vgpu)
+{
+ struct intel_gvt_workload_scheduler *scheduler =
+ &vgpu->gvt->scheduler;
+
+ gvt_dbg_core("vgpu%d: stop schedule\n", vgpu->id);
+
+ scheduler->sched_ops->stop_schedule(vgpu);
+
+ if (scheduler->next_vgpu == vgpu)
+ scheduler->next_vgpu = NULL;
+
+ if (scheduler->current_vgpu == vgpu) {
+ /* stop workload dispatching */
+ scheduler->need_reschedule = true;
+ scheduler->current_vgpu = NULL;
+ }
+}
--- /dev/null
+/*
+ * 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:
+ * Anhua Xu
+ * Kevin Tian <kevin.tian@intel.com>
+ *
+ * Contributors:
+ * Min He <min.he@intel.com>
+ * Bing Niu <bing.niu@intel.com>
+ * Zhi Wang <zhi.a.wang@intel.com>
+ *
+ */
+
+#ifndef __GVT_SCHED_POLICY__
+#define __GVT_SCHED_POLICY__
+
+struct intel_gvt_sched_policy_ops {
+ int (*init)(struct intel_gvt *gvt);
+ void (*clean)(struct intel_gvt *gvt);
+ int (*init_vgpu)(struct intel_vgpu *vgpu);
+ void (*clean_vgpu)(struct intel_vgpu *vgpu);
+ void (*start_schedule)(struct intel_vgpu *vgpu);
+ void (*stop_schedule)(struct intel_vgpu *vgpu);
+};
+
+int intel_gvt_init_sched_policy(struct intel_gvt *gvt);
+
+void intel_gvt_clean_sched_policy(struct intel_gvt *gvt);
+
+int intel_vgpu_init_sched_policy(struct intel_vgpu *vgpu);
+
+void intel_vgpu_clean_sched_policy(struct intel_vgpu *vgpu);
+
+void intel_vgpu_start_schedule(struct intel_vgpu *vgpu);
+
+void intel_vgpu_stop_schedule(struct intel_vgpu *vgpu);
+
+#endif
projects / linux.git / commitdiff