Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 598 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
new file mode 100644
index 000000000..ac72c2071
--- /dev/null
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
@@ -0,0 +1,598 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/**************************************************************************
+ *
+ * Copyright 2009-2022 VMware, Inc., Palo Alto, CA., USA
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+
+#include "vmwgfx_kms.h"
+
+#define vmw_crtc_to_ldu(x) \
+	container_of(x, struct vmw_legacy_display_unit, base.crtc)
+#define vmw_encoder_to_ldu(x) \
+	container_of(x, struct vmw_legacy_display_unit, base.encoder)
+#define vmw_connector_to_ldu(x) \
+	container_of(x, struct vmw_legacy_display_unit, base.connector)
+
+struct vmw_legacy_display {
+	struct list_head active;
+
+	unsigned num_active;
+	unsigned last_num_active;
+
+	struct vmw_framebuffer *fb;
+};
+
+/*
+ * Display unit using the legacy register interface.
+ */
+struct vmw_legacy_display_unit {
+	struct vmw_display_unit base;
+
+	struct list_head active;
+};
+
+static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
+{
+	list_del_init(&ldu->active);
+	vmw_du_cleanup(&ldu->base);
+	kfree(ldu);
+}
+
+
+/*
+ * Legacy Display Unit CRTC functions
+ */
+
+static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
+{
+	vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
+}
+
+static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
+{
+	struct vmw_legacy_display *lds = dev_priv->ldu_priv;
+	struct vmw_legacy_display_unit *entry;
+	struct drm_framebuffer *fb = NULL;
+	struct drm_crtc *crtc = NULL;
+	int i;
+
+	/* If there is no display topology the host just assumes
+	 * that the guest will set the same layout as the host.
+	 */
+	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
+		int w = 0, h = 0;
+		list_for_each_entry(entry, &lds->active, active) {
+			crtc = &entry->base.crtc;
+			w = max(w, crtc->x + crtc->mode.hdisplay);
+			h = max(h, crtc->y + crtc->mode.vdisplay);
+		}
+
+		if (crtc == NULL)
+			return 0;
+		fb = crtc->primary->state->fb;
+
+		return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
+					  fb->format->cpp[0] * 8,
+					  fb->format->depth);
+	}
+
+	if (!list_empty(&lds->active)) {
+		entry = list_entry(lds->active.next, typeof(*entry), active);
+		fb = entry->base.crtc.primary->state->fb;
+
+		vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
+				   fb->format->cpp[0] * 8, fb->format->depth);
+	}
+
+	/* Make sure we always show something. */
+	vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
+		  lds->num_active ? lds->num_active : 1);
+
+	i = 0;
+	list_for_each_entry(entry, &lds->active, active) {
+		crtc = &entry->base.crtc;
+
+		vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
+		vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
+		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
+		vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
+		vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
+		vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
+
+		i++;
+	}
+
+	BUG_ON(i != lds->num_active);
+
+	lds->last_num_active = lds->num_active;
+
+	return 0;
+}
+
+static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
+			      struct vmw_legacy_display_unit *ldu)
+{
+	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
+	if (list_empty(&ldu->active))
+		return 0;
+
+	/* Must init otherwise list_empty(&ldu->active) will not work. */
+	list_del_init(&ldu->active);
+	if (--(ld->num_active) == 0) {
+		BUG_ON(!ld->fb);
+		if (ld->fb->unpin)
+			ld->fb->unpin(ld->fb);
+		ld->fb = NULL;
+	}
+
+	return 0;
+}
+
+static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
+			      struct vmw_legacy_display_unit *ldu,
+			      struct vmw_framebuffer *vfb)
+{
+	struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
+	struct vmw_legacy_display_unit *entry;
+	struct list_head *at;
+
+	BUG_ON(!ld->num_active && ld->fb);
+	if (vfb != ld->fb) {
+		if (ld->fb && ld->fb->unpin)
+			ld->fb->unpin(ld->fb);
+		vmw_svga_enable(vmw_priv);
+		if (vfb->pin)
+			vfb->pin(vfb);
+		ld->fb = vfb;
+	}
+
+	if (!list_empty(&ldu->active))
+		return 0;
+
+	at = &ld->active;
+	list_for_each_entry(entry, &ld->active, active) {
+		if (entry->base.unit > ldu->base.unit)
+			break;
+
+		at = &entry->active;
+	}
+
+	list_add(&ldu->active, at);
+
+	ld->num_active++;
+
+	return 0;
+}
+
+/**
+ * vmw_ldu_crtc_mode_set_nofb - Enable svga
+ *
+ * @crtc: CRTC associated with the new screen
+ *
+ * For LDU, just enable the svga
+ */
+static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
+{
+}
+
+/**
+ * vmw_ldu_crtc_atomic_enable - Noop
+ *
+ * @crtc: CRTC associated with the new screen
+ * @state: Unused
+ *
+ * This is called after a mode set has been completed.  Here's
+ * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
+ * but since for LDU the display plane is closely tied to the
+ * CRTC, it makes more sense to do those at plane update time.
+ */
+static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc,
+				       struct drm_atomic_state *state)
+{
+}
+
+/**
+ * vmw_ldu_crtc_atomic_disable - Turns off CRTC
+ *
+ * @crtc: CRTC to be turned off
+ * @state: Unused
+ */
+static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc,
+					struct drm_atomic_state *state)
+{
+}
+
+static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
+	.gamma_set = vmw_du_crtc_gamma_set,
+	.destroy = vmw_ldu_crtc_destroy,
+	.reset = vmw_du_crtc_reset,
+	.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
+	.atomic_destroy_state = vmw_du_crtc_destroy_state,
+	.set_config = drm_atomic_helper_set_config,
+	.page_flip = drm_atomic_helper_page_flip,
+};
+
+
+/*
+ * Legacy Display Unit encoder functions
+ */
+
+static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
+{
+	vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
+}
+
+static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
+	.destroy = vmw_ldu_encoder_destroy,
+};
+
+/*
+ * Legacy Display Unit connector functions
+ */
+
+static void vmw_ldu_connector_destroy(struct drm_connector *connector)
+{
+	vmw_ldu_destroy(vmw_connector_to_ldu(connector));
+}
+
+static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
+	.dpms = vmw_du_connector_dpms,
+	.detect = vmw_du_connector_detect,
+	.fill_modes = vmw_du_connector_fill_modes,
+	.destroy = vmw_ldu_connector_destroy,
+	.reset = vmw_du_connector_reset,
+	.atomic_duplicate_state = vmw_du_connector_duplicate_state,
+	.atomic_destroy_state = vmw_du_connector_destroy_state,
+};
+
+static const struct
+drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
+};
+
+static int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv,
+				   struct vmw_framebuffer *framebuffer,
+				   unsigned int flags, unsigned int color,
+				   struct drm_mode_rect *clips,
+				   unsigned int num_clips);
+
+/*
+ * Legacy Display Plane Functions
+ */
+
+static void
+vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
+				    struct drm_atomic_state *state)
+{
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct vmw_private *dev_priv;
+	struct vmw_legacy_display_unit *ldu;
+	struct vmw_framebuffer *vfb;
+	struct drm_framebuffer *fb;
+	struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc;
+
+	ldu = vmw_crtc_to_ldu(crtc);
+	dev_priv = vmw_priv(plane->dev);
+	fb       = new_state->fb;
+
+	vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
+
+	if (vfb)
+		vmw_ldu_add_active(dev_priv, ldu, vfb);
+	else
+		vmw_ldu_del_active(dev_priv, ldu);
+
+	vmw_ldu_commit_list(dev_priv);
+
+	if (vfb && vmw_cmd_supported(dev_priv)) {
+		struct drm_mode_rect fb_rect = {
+			.x1 = 0,
+			.y1 = 0,
+			.x2 = vfb->base.width,
+			.y2 = vfb->base.height
+		};
+		struct drm_mode_rect *damage_rects = drm_plane_get_damage_clips(new_state);
+		u32 rect_count = drm_plane_get_damage_clips_count(new_state);
+		int ret;
+
+		if (!damage_rects) {
+			damage_rects = &fb_rect;
+			rect_count = 1;
+		}
+
+		ret = vmw_kms_ldu_do_bo_dirty(dev_priv, vfb, 0, 0, damage_rects, rect_count);
+
+		drm_WARN_ONCE(plane->dev, ret,
+			"vmw_kms_ldu_do_bo_dirty failed with: ret=%d\n", ret);
+
+		vmw_cmd_flush(dev_priv, false);
+	}
+}
+
+static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = vmw_du_primary_plane_destroy,
+	.reset = vmw_du_plane_reset,
+	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
+	.atomic_destroy_state = vmw_du_plane_destroy_state,
+};
+
+static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = vmw_du_cursor_plane_destroy,
+	.reset = vmw_du_plane_reset,
+	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
+	.atomic_destroy_state = vmw_du_plane_destroy_state,
+};
+
+/*
+ * Atomic Helpers
+ */
+static const struct
+drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
+	.atomic_check = vmw_du_cursor_plane_atomic_check,
+	.atomic_update = vmw_du_cursor_plane_atomic_update,
+	.prepare_fb = vmw_du_cursor_plane_prepare_fb,
+	.cleanup_fb = vmw_du_cursor_plane_cleanup_fb,
+};
+
+static const struct
+drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
+	.atomic_check = vmw_du_primary_plane_atomic_check,
+	.atomic_update = vmw_ldu_primary_plane_atomic_update,
+};
+
+static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
+	.mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
+	.atomic_check = vmw_du_crtc_atomic_check,
+	.atomic_begin = vmw_du_crtc_atomic_begin,
+	.atomic_flush = vmw_du_crtc_atomic_flush,
+	.atomic_enable = vmw_ldu_crtc_atomic_enable,
+	.atomic_disable = vmw_ldu_crtc_atomic_disable,
+};
+
+
+static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
+{
+	struct vmw_legacy_display_unit *ldu;
+	struct drm_device *dev = &dev_priv->drm;
+	struct drm_connector *connector;
+	struct drm_encoder *encoder;
+	struct drm_plane *primary;
+	struct vmw_cursor_plane *cursor;
+	struct drm_crtc *crtc;
+	int ret;
+
+	ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
+	if (!ldu)
+		return -ENOMEM;
+
+	ldu->base.unit = unit;
+	crtc = &ldu->base.crtc;
+	encoder = &ldu->base.encoder;
+	connector = &ldu->base.connector;
+	primary = &ldu->base.primary;
+	cursor = &ldu->base.cursor;
+
+	INIT_LIST_HEAD(&ldu->active);
+
+	ldu->base.pref_active = (unit == 0);
+	ldu->base.pref_width = dev_priv->initial_width;
+	ldu->base.pref_height = dev_priv->initial_height;
+	ldu->base.pref_mode = NULL;
+
+	/*
+	 * Remove this after enabling atomic because property values can
+	 * only exist in a state object
+	 */
+	ldu->base.is_implicit = true;
+
+	/* Initialize primary plane */
+	ret = drm_universal_plane_init(dev, primary,
+				       0, &vmw_ldu_plane_funcs,
+				       vmw_primary_plane_formats,
+				       ARRAY_SIZE(vmw_primary_plane_formats),
+				       NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
+	if (ret) {
+		DRM_ERROR("Failed to initialize primary plane");
+		goto err_free;
+	}
+
+	drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);
+
+	/*
+	 * We're going to be using traces and software cursors
+	 */
+	if (vmw_cmd_supported(dev_priv)) {
+		/* Initialize cursor plane */
+		ret = drm_universal_plane_init(dev, &cursor->base,
+					       0, &vmw_ldu_cursor_funcs,
+					       vmw_cursor_plane_formats,
+					       ARRAY_SIZE(vmw_cursor_plane_formats),
+					       NULL, DRM_PLANE_TYPE_CURSOR, NULL);
+		if (ret) {
+			DRM_ERROR("Failed to initialize cursor plane");
+			drm_plane_cleanup(&ldu->base.primary);
+			goto err_free;
+		}
+
+		drm_plane_helper_add(&cursor->base, &vmw_ldu_cursor_plane_helper_funcs);
+	}
+
+	ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
+				 DRM_MODE_CONNECTOR_VIRTUAL);
+	if (ret) {
+		DRM_ERROR("Failed to initialize connector\n");
+		goto err_free;
+	}
+
+	drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
+	connector->status = vmw_du_connector_detect(connector, true);
+
+	ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
+			       DRM_MODE_ENCODER_VIRTUAL, NULL);
+	if (ret) {
+		DRM_ERROR("Failed to initialize encoder\n");
+		goto err_free_connector;
+	}
+
+	(void) drm_connector_attach_encoder(connector, encoder);
+	encoder->possible_crtcs = (1 << unit);
+	encoder->possible_clones = 0;
+
+	ret = drm_connector_register(connector);
+	if (ret) {
+		DRM_ERROR("Failed to register connector\n");
+		goto err_free_encoder;
+	}
+
+	ret = drm_crtc_init_with_planes(dev, crtc, primary,
+		      vmw_cmd_supported(dev_priv) ? &cursor->base : NULL,
+		      &vmw_legacy_crtc_funcs, NULL);
+	if (ret) {
+		DRM_ERROR("Failed to initialize CRTC\n");
+		goto err_free_unregister;
+	}
+
+	drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);
+
+	drm_mode_crtc_set_gamma_size(crtc, 256);
+
+	drm_object_attach_property(&connector->base,
+				   dev_priv->hotplug_mode_update_property, 1);
+	drm_object_attach_property(&connector->base,
+				   dev->mode_config.suggested_x_property, 0);
+	drm_object_attach_property(&connector->base,
+				   dev->mode_config.suggested_y_property, 0);
+	if (dev_priv->implicit_placement_property)
+		drm_object_attach_property
+			(&connector->base,
+			 dev_priv->implicit_placement_property,
+			 1);
+
+	return 0;
+
+err_free_unregister:
+	drm_connector_unregister(connector);
+err_free_encoder:
+	drm_encoder_cleanup(encoder);
+err_free_connector:
+	drm_connector_cleanup(connector);
+err_free:
+	kfree(ldu);
+	return ret;
+}
+
+int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->drm;
+	int i, ret;
+	int num_display_units = (dev_priv->capabilities & SVGA_CAP_MULTIMON) ?
+					VMWGFX_NUM_DISPLAY_UNITS : 1;
+
+	if (unlikely(dev_priv->ldu_priv)) {
+		return -EINVAL;
+	}
+
+	dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
+	if (!dev_priv->ldu_priv)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
+	dev_priv->ldu_priv->num_active = 0;
+	dev_priv->ldu_priv->last_num_active = 0;
+	dev_priv->ldu_priv->fb = NULL;
+
+	vmw_kms_create_implicit_placement_property(dev_priv);
+
+	for (i = 0; i < num_display_units; ++i) {
+		ret = vmw_ldu_init(dev_priv, i);
+		if (ret != 0)
+			goto err_free;
+	}
+
+	dev_priv->active_display_unit = vmw_du_legacy;
+
+	drm_mode_config_reset(dev);
+
+	return 0;
+
+err_free:
+	kfree(dev_priv->ldu_priv);
+	dev_priv->ldu_priv = NULL;
+	return ret;
+}
+
+int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
+{
+	if (!dev_priv->ldu_priv)
+		return -ENOSYS;
+
+	BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
+
+	kfree(dev_priv->ldu_priv);
+
+	return 0;
+}
+
+
+static int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv,
+				   struct vmw_framebuffer *framebuffer,
+				   unsigned int flags, unsigned int color,
+				   struct drm_mode_rect *clips,
+				   unsigned int num_clips)
+{
+	size_t fifo_size;
+	int i;
+
+	struct {
+		uint32_t header;
+		SVGAFifoCmdUpdate body;
+	} *cmd;
+
+	fifo_size = sizeof(*cmd) * num_clips;
+	cmd = VMW_CMD_RESERVE(dev_priv, fifo_size);
+	if (unlikely(cmd == NULL))
+		return -ENOMEM;
+
+	memset(cmd, 0, fifo_size);
+	for (i = 0; i < num_clips; i++, clips++) {
+		cmd[i].header = SVGA_CMD_UPDATE;
+		cmd[i].body.x = clips->x1;
+		cmd[i].body.y = clips->y1;
+		cmd[i].body.width = clips->x2 - clips->x1;
+		cmd[i].body.height = clips->y2 - clips->y1;
+	}
+
+	vmw_cmd_commit(dev_priv, fifo_size);
+	return 0;
+}