diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c | 572 |
1 files changed, 572 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..c4017c7a2 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c @@ -0,0 +1,572 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/************************************************************************** + * + * Copyright 2009-2015 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 <drm/drm_plane_helper.h> +#include <drm/drm_vblank.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); + vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); + + 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 + * + * 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_crtc_state *old_state) +{ +} + +/** + * vmw_ldu_crtc_atomic_disable - Turns off CRTC + * + * @crtc: CRTC to be turned off + */ +static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc, + struct drm_crtc_state *old_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, + .get_vblank_counter = vmw_get_vblank_counter, + .enable_vblank = vmw_enable_vblank, + .disable_vblank = vmw_disable_vblank, +}; + + +/* + * 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 = { +}; + +/* + * Legacy Display Plane Functions + */ + +static void +vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct vmw_private *dev_priv; + struct vmw_legacy_display_unit *ldu; + struct vmw_framebuffer *vfb; + struct drm_framebuffer *fb; + struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc; + + + ldu = vmw_crtc_to_ldu(crtc); + dev_priv = vmw_priv(plane->dev); + fb = plane->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); +} + + +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_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->dev; + struct drm_connector *connector; + struct drm_encoder *encoder; + struct drm_plane *primary, *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, &ldu->base.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); + + /* Initialize cursor plane */ + ret = drm_universal_plane_init(dev, &ldu->base.cursor, + 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, &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, &ldu->base.primary, + &ldu->base.cursor, + &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->dev; + int i, ret; + + if (dev_priv->ldu_priv) { + DRM_INFO("ldu system already on\n"); + 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; + + /* for old hardware without multimon only enable one display */ + if (dev_priv->capabilities & SVGA_CAP_MULTIMON) + ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); + else + ret = drm_vblank_init(dev, 1); + if (ret != 0) + goto err_free; + + vmw_kms_create_implicit_placement_property(dev_priv); + + if (dev_priv->capabilities & SVGA_CAP_MULTIMON) + for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) + vmw_ldu_init(dev_priv, i); + else + vmw_ldu_init(dev_priv, 0); + + dev_priv->active_display_unit = vmw_du_legacy; + + drm_mode_config_reset(dev); + + DRM_INFO("Legacy Display Unit initialized\n"); + + 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; +} + + +int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, + struct vmw_framebuffer *framebuffer, + unsigned int flags, unsigned int color, + struct drm_clip_rect *clips, + unsigned int num_clips, int increment) +{ + size_t fifo_size; + int i; + + struct { + uint32_t header; + SVGAFifoCmdUpdate body; + } *cmd; + + fifo_size = sizeof(*cmd) * num_clips; + cmd = VMW_FIFO_RESERVE(dev_priv, fifo_size); + if (unlikely(cmd == NULL)) + return -ENOMEM; + + memset(cmd, 0, fifo_size); + for (i = 0; i < num_clips; i++, clips += increment) { + 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_fifo_commit(dev_priv, fifo_size); + return 0; +} |