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-rw-r--r--drivers/gpu/drm/i915/gvt/Makefile3
-rw-r--r--drivers/gpu/drm/i915/gvt/debug.h3
-rw-r--r--drivers/gpu/drm/i915/gvt/execlist.c386
-rw-r--r--drivers/gpu/drm/i915/gvt/execlist.h137
-rw-r--r--drivers/gpu/drm/i915/gvt/gvt.h3
-rw-r--r--drivers/gpu/drm/i915/gvt/vgpu.c6
6 files changed, 537 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
index f87cd7fe9574..f15197390d76 100644
--- a/drivers/gpu/drm/i915/gvt/Makefile
+++ b/drivers/gpu/drm/i915/gvt/Makefile
@@ -1,6 +1,7 @@
GVT_DIR := gvt
GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \
- interrupt.o gtt.o cfg_space.o opregion.o mmio.o display.o edid.o
+ interrupt.o gtt.o cfg_space.o opregion.o mmio.o display.o edid.o \
+ execlist.o
ccflags-y += -I$(src) -I$(src)/$(GVT_DIR) -Wall
i915-y += $(addprefix $(GVT_DIR)/, $(GVT_SOURCE))
diff --git a/drivers/gpu/drm/i915/gvt/debug.h b/drivers/gpu/drm/i915/gvt/debug.h
index 5c21c585ac00..a7e0e7956ee9 100644
--- a/drivers/gpu/drm/i915/gvt/debug.h
+++ b/drivers/gpu/drm/i915/gvt/debug.h
@@ -42,4 +42,7 @@
#define gvt_dbg_dpy(fmt, args...) \
DRM_DEBUG_DRIVER("gvt: dpy: "fmt, ##args)
+#define gvt_dbg_el(fmt, args...) \
+ DRM_DEBUG_DRIVER("gvt: el: "fmt, ##args)
+
#endif
diff --git a/drivers/gpu/drm/i915/gvt/execlist.c b/drivers/gpu/drm/i915/gvt/execlist.c
new file mode 100644
index 000000000000..3c38e2a2dba3
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/execlist.c
@@ -0,0 +1,386 @@
+/*
+ * 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:
+ * Zhiyuan Lv <zhiyuan.lv@intel.com>
+ * Zhi Wang <zhi.a.wang@intel.com>
+ *
+ * Contributors:
+ * Min He <min.he@intel.com>
+ * Bing Niu <bing.niu@intel.com>
+ * Ping Gao <ping.a.gao@intel.com>
+ * Tina Zhang <tina.zhang@intel.com>
+ *
+ */
+
+#include "i915_drv.h"
+
+#define _EL_OFFSET_STATUS 0x234
+#define _EL_OFFSET_STATUS_BUF 0x370
+#define _EL_OFFSET_STATUS_PTR 0x3A0
+
+#define execlist_ring_mmio(gvt, ring_id, offset) \
+ (gvt->dev_priv->engine[ring_id].mmio_base + (offset))
+
+#define valid_context(ctx) ((ctx)->valid)
+#define same_context(a, b) (((a)->context_id == (b)->context_id) && \
+ ((a)->lrca == (b)->lrca))
+
+static int context_switch_events[] = {
+ [RCS] = RCS_AS_CONTEXT_SWITCH,
+ [BCS] = BCS_AS_CONTEXT_SWITCH,
+ [VCS] = VCS_AS_CONTEXT_SWITCH,
+ [VCS2] = VCS2_AS_CONTEXT_SWITCH,
+ [VECS] = VECS_AS_CONTEXT_SWITCH,
+};
+
+static int ring_id_to_context_switch_event(int ring_id)
+{
+ if (WARN_ON(ring_id < RCS && ring_id >
+ ARRAY_SIZE(context_switch_events)))
+ return -EINVAL;
+
+ return context_switch_events[ring_id];
+}
+
+static void switch_virtual_execlist_slot(struct intel_vgpu_execlist *execlist)
+{
+ gvt_dbg_el("[before] running slot %d/context %x pending slot %d\n",
+ execlist->running_slot ?
+ execlist->running_slot->index : -1,
+ execlist->running_context ?
+ execlist->running_context->context_id : 0,
+ execlist->pending_slot ?
+ execlist->pending_slot->index : -1);
+
+ execlist->running_slot = execlist->pending_slot;
+ execlist->pending_slot = NULL;
+ execlist->running_context = execlist->running_context ?
+ &execlist->running_slot->ctx[0] : NULL;
+
+ gvt_dbg_el("[after] running slot %d/context %x pending slot %d\n",
+ execlist->running_slot ?
+ execlist->running_slot->index : -1,
+ execlist->running_context ?
+ execlist->running_context->context_id : 0,
+ execlist->pending_slot ?
+ execlist->pending_slot->index : -1);
+}
+
+static void emulate_execlist_status(struct intel_vgpu_execlist *execlist)
+{
+ struct intel_vgpu_execlist_slot *running = execlist->running_slot;
+ struct intel_vgpu_execlist_slot *pending = execlist->pending_slot;
+ struct execlist_ctx_descriptor_format *desc = execlist->running_context;
+ struct intel_vgpu *vgpu = execlist->vgpu;
+ struct execlist_status_format status;
+ int ring_id = execlist->ring_id;
+ u32 status_reg = execlist_ring_mmio(vgpu->gvt,
+ ring_id, _EL_OFFSET_STATUS);
+
+ status.ldw = vgpu_vreg(vgpu, status_reg);
+ status.udw = vgpu_vreg(vgpu, status_reg + 4);
+
+ if (running) {
+ status.current_execlist_pointer = !!running->index;
+ status.execlist_write_pointer = !!!running->index;
+ status.execlist_0_active = status.execlist_0_valid =
+ !!!(running->index);
+ status.execlist_1_active = status.execlist_1_valid =
+ !!(running->index);
+ } else {
+ status.context_id = 0;
+ status.execlist_0_active = status.execlist_0_valid = 0;
+ status.execlist_1_active = status.execlist_1_valid = 0;
+ }
+
+ status.context_id = desc ? desc->context_id : 0;
+ status.execlist_queue_full = !!(pending);
+
+ vgpu_vreg(vgpu, status_reg) = status.ldw;
+ vgpu_vreg(vgpu, status_reg + 4) = status.udw;
+
+ gvt_dbg_el("vgpu%d: status reg offset %x ldw %x udw %x\n",
+ vgpu->id, status_reg, status.ldw, status.udw);
+}
+
+static void emulate_csb_update(struct intel_vgpu_execlist *execlist,
+ struct execlist_context_status_format *status,
+ bool trigger_interrupt_later)
+{
+ struct intel_vgpu *vgpu = execlist->vgpu;
+ int ring_id = execlist->ring_id;
+ struct execlist_context_status_pointer_format ctx_status_ptr;
+ u32 write_pointer;
+ u32 ctx_status_ptr_reg, ctx_status_buf_reg, offset;
+
+ ctx_status_ptr_reg = execlist_ring_mmio(vgpu->gvt, ring_id,
+ _EL_OFFSET_STATUS_PTR);
+ ctx_status_buf_reg = execlist_ring_mmio(vgpu->gvt, ring_id,
+ _EL_OFFSET_STATUS_BUF);
+
+ ctx_status_ptr.dw = vgpu_vreg(vgpu, ctx_status_ptr_reg);
+
+ write_pointer = ctx_status_ptr.write_ptr;
+
+ if (write_pointer == 0x7)
+ write_pointer = 0;
+ else {
+ ++write_pointer;
+ write_pointer %= 0x6;
+ }
+
+ offset = ctx_status_buf_reg + write_pointer * 8;
+
+ vgpu_vreg(vgpu, offset) = status->ldw;
+ vgpu_vreg(vgpu, offset + 4) = status->udw;
+
+ ctx_status_ptr.write_ptr = write_pointer;
+ vgpu_vreg(vgpu, ctx_status_ptr_reg) = ctx_status_ptr.dw;
+
+ gvt_dbg_el("vgpu%d: w pointer %u reg %x csb l %x csb h %x\n",
+ vgpu->id, write_pointer, offset, status->ldw, status->udw);
+
+ if (trigger_interrupt_later)
+ return;
+
+ intel_vgpu_trigger_virtual_event(vgpu,
+ ring_id_to_context_switch_event(execlist->ring_id));
+}
+
+int emulate_execlist_ctx_schedule_out(
+ struct intel_vgpu_execlist *execlist,
+ struct execlist_ctx_descriptor_format *ctx)
+{
+ struct intel_vgpu_execlist_slot *running = execlist->running_slot;
+ struct intel_vgpu_execlist_slot *pending = execlist->pending_slot;
+ struct execlist_ctx_descriptor_format *ctx0 = &running->ctx[0];
+ struct execlist_ctx_descriptor_format *ctx1 = &running->ctx[1];
+ struct execlist_context_status_format status;
+
+ memset(&status, 0, sizeof(status));
+
+ gvt_dbg_el("schedule out context id %x\n", ctx->context_id);
+
+ if (WARN_ON(!same_context(ctx, execlist->running_context))) {
+ gvt_err("schedule out context is not running context,"
+ "ctx id %x running ctx id %x\n",
+ ctx->context_id,
+ execlist->running_context->context_id);
+ return -EINVAL;
+ }
+
+ /* ctx1 is valid, ctx0/ctx is scheduled-out -> element switch */
+ if (valid_context(ctx1) && same_context(ctx0, ctx)) {
+ gvt_dbg_el("ctx 1 valid, ctx/ctx 0 is scheduled-out\n");
+
+ execlist->running_context = ctx1;
+
+ emulate_execlist_status(execlist);
+
+ status.context_complete = status.element_switch = 1;
+ status.context_id = ctx->context_id;
+
+ emulate_csb_update(execlist, &status, false);
+ /*
+ * ctx1 is not valid, ctx == ctx0
+ * ctx1 is valid, ctx1 == ctx
+ * --> last element is finished
+ * emulate:
+ * active-to-idle if there is *no* pending execlist
+ * context-complete if there *is* pending execlist
+ */
+ } else if ((!valid_context(ctx1) && same_context(ctx0, ctx))
+ || (valid_context(ctx1) && same_context(ctx1, ctx))) {
+ gvt_dbg_el("need to switch virtual execlist slot\n");
+
+ switch_virtual_execlist_slot(execlist);
+
+ emulate_execlist_status(execlist);
+
+ status.context_complete = status.active_to_idle = 1;
+ status.context_id = ctx->context_id;
+
+ if (!pending) {
+ emulate_csb_update(execlist, &status, false);
+ } else {
+ emulate_csb_update(execlist, &status, true);
+
+ memset(&status, 0, sizeof(status));
+
+ status.idle_to_active = 1;
+ status.context_id = 0;
+
+ emulate_csb_update(execlist, &status, false);
+ }
+ } else {
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct intel_vgpu_execlist_slot *get_next_execlist_slot(
+ struct intel_vgpu_execlist *execlist)
+{
+ struct intel_vgpu *vgpu = execlist->vgpu;
+ int ring_id = execlist->ring_id;
+ u32 status_reg = execlist_ring_mmio(vgpu->gvt, ring_id,
+ _EL_OFFSET_STATUS);
+ struct execlist_status_format status;
+
+ status.ldw = vgpu_vreg(vgpu, status_reg);
+ status.udw = vgpu_vreg(vgpu, status_reg + 4);
+
+ if (status.execlist_queue_full) {
+ gvt_err("virtual execlist slots are full\n");
+ return NULL;
+ }
+
+ return &execlist->slot[status.execlist_write_pointer];
+}
+
+int emulate_execlist_schedule_in(struct intel_vgpu_execlist *execlist,
+ struct execlist_ctx_descriptor_format ctx[2])
+{
+ struct intel_vgpu_execlist_slot *running = execlist->running_slot;
+ struct intel_vgpu_execlist_slot *slot =
+ get_next_execlist_slot(execlist);
+
+ struct execlist_ctx_descriptor_format *ctx0, *ctx1;
+ struct execlist_context_status_format status;
+
+ gvt_dbg_el("emulate schedule-in\n");
+
+ if (!slot) {
+ gvt_err("no available execlist slot\n");
+ return -EINVAL;
+ }
+
+ memset(&status, 0, sizeof(status));
+ memset(slot->ctx, 0, sizeof(slot->ctx));
+
+ slot->ctx[0] = ctx[0];
+ slot->ctx[1] = ctx[1];
+
+ gvt_dbg_el("alloc slot index %d ctx 0 %x ctx 1 %x\n",
+ slot->index, ctx[0].context_id,
+ ctx[1].context_id);
+
+ /*
+ * no running execlist, make this write bundle as running execlist
+ * -> idle-to-active
+ */
+ if (!running) {
+ gvt_dbg_el("no current running execlist\n");
+
+ execlist->running_slot = slot;
+ execlist->pending_slot = NULL;
+ execlist->running_context = &slot->ctx[0];
+
+ gvt_dbg_el("running slot index %d running context %x\n",
+ execlist->running_slot->index,
+ execlist->running_context->context_id);
+
+ emulate_execlist_status(execlist);
+
+ status.idle_to_active = 1;
+ status.context_id = 0;
+
+ emulate_csb_update(execlist, &status, false);
+ return 0;
+ }
+
+ ctx0 = &running->ctx[0];
+ ctx1 = &running->ctx[1];
+
+ gvt_dbg_el("current running slot index %d ctx 0 %x ctx 1 %x\n",
+ running->index, ctx0->context_id, ctx1->context_id);
+
+ /*
+ * already has an running execlist
+ * a. running ctx1 is valid,
+ * ctx0 is finished, and running ctx1 == new execlist ctx[0]
+ * b. running ctx1 is not valid,
+ * ctx0 == new execlist ctx[0]
+ * ----> lite-restore + preempted
+ */
+ if ((valid_context(ctx1) && same_context(ctx1, &slot->ctx[0]) &&
+ /* condition a */
+ (!same_context(ctx0, execlist->running_context))) ||
+ (!valid_context(ctx1) &&
+ same_context(ctx0, &slot->ctx[0]))) { /* condition b */
+ gvt_dbg_el("need to switch virtual execlist slot\n");
+
+ execlist->pending_slot = slot;
+ switch_virtual_execlist_slot(execlist);
+
+ emulate_execlist_status(execlist);
+
+ status.lite_restore = status.preempted = 1;
+ status.context_id = ctx[0].context_id;
+
+ emulate_csb_update(execlist, &status, false);
+ } else {
+ gvt_dbg_el("emulate as pending slot\n");
+ /*
+ * otherwise
+ * --> emulate pending execlist exist + but no preemption case
+ */
+ execlist->pending_slot = slot;
+ emulate_execlist_status(execlist);
+ }
+ return 0;
+}
+
+static void init_vgpu_execlist(struct intel_vgpu *vgpu, int ring_id)
+{
+ struct intel_vgpu_execlist *execlist = &vgpu->execlist[ring_id];
+ struct execlist_context_status_pointer_format ctx_status_ptr;
+ u32 ctx_status_ptr_reg;
+
+ memset(execlist, 0, sizeof(*execlist));
+
+ execlist->vgpu = vgpu;
+ execlist->ring_id = ring_id;
+ execlist->slot[0].index = 0;
+ execlist->slot[1].index = 1;
+
+ ctx_status_ptr_reg = execlist_ring_mmio(vgpu->gvt, ring_id,
+ _EL_OFFSET_STATUS_PTR);
+
+ ctx_status_ptr.dw = vgpu_vreg(vgpu, ctx_status_ptr_reg);
+ ctx_status_ptr.read_ptr = ctx_status_ptr.write_ptr = 0x7;
+ vgpu_vreg(vgpu, ctx_status_ptr_reg) = ctx_status_ptr.dw;
+}
+
+int intel_vgpu_init_execlist(struct intel_vgpu *vgpu)
+{
+ int i;
+
+ /* each ring has a virtual execlist engine */
+ for (i = 0; i < I915_NUM_ENGINES; i++)
+ init_vgpu_execlist(vgpu, i);
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/i915/gvt/execlist.h b/drivers/gpu/drm/i915/gvt/execlist.h
new file mode 100644
index 000000000000..428f54358ae8
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/execlist.h
@@ -0,0 +1,137 @@
+/*
+ * 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:
+ * Zhiyuan Lv <zhiyuan.lv@intel.com>
+ * Zhi Wang <zhi.a.wang@intel.com>
+ *
+ * Contributors:
+ * Min He <min.he@intel.com>
+ * Bing Niu <bing.niu@intel.com>
+ * Ping Gao <ping.a.gao@intel.com>
+ * Tina Zhang <tina.zhang@intel.com>
+ *
+ */
+
+#ifndef _GVT_EXECLIST_H_
+#define _GVT_EXECLIST_H_
+
+struct execlist_ctx_descriptor_format {
+ union {
+ u32 udw;
+ u32 context_id;
+ };
+ union {
+ u32 ldw;
+ struct {
+ u32 valid : 1;
+ u32 force_pd_restore : 1;
+ u32 force_restore : 1;
+ u32 addressing_mode : 2;
+ u32 llc_coherency : 1;
+ u32 fault_handling : 2;
+ u32 privilege_access : 1;
+ u32 reserved : 3;
+ u32 lrca : 20;
+ };
+ };
+};
+
+struct execlist_status_format {
+ union {
+ u32 ldw;
+ struct {
+ u32 current_execlist_pointer :1;
+ u32 execlist_write_pointer :1;
+ u32 execlist_queue_full :1;
+ u32 execlist_1_valid :1;
+ u32 execlist_0_valid :1;
+ u32 last_ctx_switch_reason :9;
+ u32 current_active_elm_status :2;
+ u32 arbitration_enable :1;
+ u32 execlist_1_active :1;
+ u32 execlist_0_active :1;
+ u32 reserved :13;
+ };
+ };
+ union {
+ u32 udw;
+ u32 context_id;
+ };
+};
+
+struct execlist_context_status_pointer_format {
+ union {
+ u32 dw;
+ struct {
+ u32 write_ptr :3;
+ u32 reserved :5;
+ u32 read_ptr :3;
+ u32 reserved2 :5;
+ u32 mask :16;
+ };
+ };
+};
+
+struct execlist_context_status_format {
+ union {
+ u32 ldw;
+ struct {
+ u32 idle_to_active :1;
+ u32 preempted :1;
+ u32 element_switch :1;
+ u32 active_to_idle :1;
+ u32 context_complete :1;
+ u32 wait_on_sync_flip :1;
+ u32 wait_on_vblank :1;
+ u32 wait_on_semaphore :1;
+ u32 wait_on_scanline :1;
+ u32 reserved :2;
+ u32 semaphore_wait_mode :1;
+ u32 display_plane :3;
+ u32 lite_restore :1;
+ u32 reserved_2 :16;
+ };
+ };
+ union {
+ u32 udw;
+ u32 context_id;
+ };
+};
+
+struct intel_vgpu_execlist_slot {
+ struct execlist_ctx_descriptor_format ctx[2];
+ u32 index;
+};
+
+struct intel_vgpu_execlist {
+ struct intel_vgpu_execlist_slot slot[2];
+ struct intel_vgpu_execlist_slot *running_slot;
+ struct intel_vgpu_execlist_slot *pending_slot;
+ struct execlist_ctx_descriptor_format *running_context;
+ int ring_id;
+ struct intel_vgpu *vgpu;
+};
+
+int intel_vgpu_init_execlist(struct intel_vgpu *vgpu);
+
+#endif /*_GVT_EXECLIST_H_*/
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 1619881dbd51..82f932a24e7d 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -41,6 +41,7 @@
#include "gtt.h"
#include "display.h"
#include "edid.h"
+#include "execlist.h"
#define GVT_MAX_VGPU 8
@@ -146,6 +147,8 @@ struct intel_vgpu {
struct intel_vgpu_gtt gtt;
struct intel_vgpu_opregion opregion;
struct intel_vgpu_display display;
+ /* TODO: move the declaration of intel_gvt.h to a proper place. */
+ struct intel_vgpu_execlist execlist[I915_NUM_ENGINES];
};
struct intel_gvt_gm {
diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c
index 47ed0a085e4c..e806b0e4035a 100644
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -221,11 +221,17 @@ struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt,
if (ret)
goto out_clean_opregion;
+ ret = intel_vgpu_init_execlist(vgpu);
+ if (ret)
+ goto out_clean_display;
+
vgpu->active = true;
mutex_unlock(&gvt->lock);
return vgpu;
+out_clean_display:
+ intel_vgpu_clean_display(vgpu);
out_clean_opregion:
intel_vgpu_clean_opregion(vgpu);
out_clean_gtt:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 06:34:49 +0000