diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c')
| -rw-r--r-- | kernel/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c | 577 |
1 files changed, 577 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c b/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c new file mode 100644 index 000000000..7dc591d04 --- /dev/null +++ b/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c @@ -0,0 +1,577 @@ +/************************************************************************** + * + * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA + * 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, 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 "vmwgfx_kms.h" +#include <drm/drm_plane_helper.h> + + +#define vmw_crtc_to_sou(x) \ + container_of(x, struct vmw_screen_object_unit, base.crtc) +#define vmw_encoder_to_sou(x) \ + container_of(x, struct vmw_screen_object_unit, base.encoder) +#define vmw_connector_to_sou(x) \ + container_of(x, struct vmw_screen_object_unit, base.connector) + +struct vmw_screen_object_display { + unsigned num_implicit; + + struct vmw_framebuffer *implicit_fb; +}; + +/** + * Display unit using screen objects. + */ +struct vmw_screen_object_unit { + struct vmw_display_unit base; + + unsigned long buffer_size; /**< Size of allocated buffer */ + struct vmw_dma_buffer *buffer; /**< Backing store buffer */ + + bool defined; + bool active_implicit; +}; + +static void vmw_sou_destroy(struct vmw_screen_object_unit *sou) +{ + vmw_display_unit_cleanup(&sou->base); + kfree(sou); +} + + +/* + * Screen Object Display Unit CRTC functions + */ + +static void vmw_sou_crtc_destroy(struct drm_crtc *crtc) +{ + vmw_sou_destroy(vmw_crtc_to_sou(crtc)); +} + +static void vmw_sou_del_active(struct vmw_private *vmw_priv, + struct vmw_screen_object_unit *sou) +{ + struct vmw_screen_object_display *ld = vmw_priv->sou_priv; + + if (sou->active_implicit) { + if (--(ld->num_implicit) == 0) + ld->implicit_fb = NULL; + sou->active_implicit = false; + } +} + +static void vmw_sou_add_active(struct vmw_private *vmw_priv, + struct vmw_screen_object_unit *sou, + struct vmw_framebuffer *vfb) +{ + struct vmw_screen_object_display *ld = vmw_priv->sou_priv; + + BUG_ON(!ld->num_implicit && ld->implicit_fb); + + if (!sou->active_implicit && sou->base.is_implicit) { + ld->implicit_fb = vfb; + sou->active_implicit = true; + ld->num_implicit++; + } +} + +/** + * Send the fifo command to create a screen. + */ +static int vmw_sou_fifo_create(struct vmw_private *dev_priv, + struct vmw_screen_object_unit *sou, + uint32_t x, uint32_t y, + struct drm_display_mode *mode) +{ + size_t fifo_size; + + struct { + struct { + uint32_t cmdType; + } header; + SVGAScreenObject obj; + } *cmd; + + BUG_ON(!sou->buffer); + + fifo_size = sizeof(*cmd); + cmd = vmw_fifo_reserve(dev_priv, fifo_size); + /* The hardware has hung, nothing we can do about it here. */ + if (unlikely(cmd == NULL)) { + DRM_ERROR("Fifo reserve failed.\n"); + return -ENOMEM; + } + + memset(cmd, 0, fifo_size); + cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN; + cmd->obj.structSize = sizeof(SVGAScreenObject); + cmd->obj.id = sou->base.unit; + cmd->obj.flags = SVGA_SCREEN_HAS_ROOT | + (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0); + cmd->obj.size.width = mode->hdisplay; + cmd->obj.size.height = mode->vdisplay; + if (sou->base.is_implicit) { + cmd->obj.root.x = x; + cmd->obj.root.y = y; + } else { + cmd->obj.root.x = sou->base.gui_x; + cmd->obj.root.y = sou->base.gui_y; + } + + /* Ok to assume that buffer is pinned in vram */ + vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr); + cmd->obj.backingStore.pitch = mode->hdisplay * 4; + + vmw_fifo_commit(dev_priv, fifo_size); + + sou->defined = true; + + return 0; +} + +/** + * Send the fifo command to destroy a screen. + */ +static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv, + struct vmw_screen_object_unit *sou) +{ + size_t fifo_size; + int ret; + + struct { + struct { + uint32_t cmdType; + } header; + SVGAFifoCmdDestroyScreen body; + } *cmd; + + /* no need to do anything */ + if (unlikely(!sou->defined)) + return 0; + + fifo_size = sizeof(*cmd); + cmd = vmw_fifo_reserve(dev_priv, fifo_size); + /* the hardware has hung, nothing we can do about it here */ + if (unlikely(cmd == NULL)) { + DRM_ERROR("Fifo reserve failed.\n"); + return -ENOMEM; + } + + memset(cmd, 0, fifo_size); + cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN; + cmd->body.screenId = sou->base.unit; + + vmw_fifo_commit(dev_priv, fifo_size); + + /* Force sync */ + ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); + if (unlikely(ret != 0)) + DRM_ERROR("Failed to sync with HW"); + else + sou->defined = false; + + return ret; +} + +/** + * Free the backing store. + */ +static void vmw_sou_backing_free(struct vmw_private *dev_priv, + struct vmw_screen_object_unit *sou) +{ + struct ttm_buffer_object *bo; + + if (unlikely(sou->buffer == NULL)) + return; + + bo = &sou->buffer->base; + ttm_bo_unref(&bo); + sou->buffer = NULL; + sou->buffer_size = 0; +} + +/** + * Allocate the backing store for the buffer. + */ +static int vmw_sou_backing_alloc(struct vmw_private *dev_priv, + struct vmw_screen_object_unit *sou, + unsigned long size) +{ + int ret; + + if (sou->buffer_size == size) + return 0; + + if (sou->buffer) + vmw_sou_backing_free(dev_priv, sou); + + sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL); + if (unlikely(sou->buffer == NULL)) + return -ENOMEM; + + /* After we have alloced the backing store might not be able to + * resume the overlays, this is preferred to failing to alloc. + */ + vmw_overlay_pause_all(dev_priv); + ret = vmw_dmabuf_init(dev_priv, sou->buffer, size, + &vmw_vram_ne_placement, + false, &vmw_dmabuf_bo_free); + vmw_overlay_resume_all(dev_priv); + + if (unlikely(ret != 0)) + sou->buffer = NULL; /* vmw_dmabuf_init frees on error */ + else + sou->buffer_size = size; + + return ret; +} + +static int vmw_sou_crtc_set_config(struct drm_mode_set *set) +{ + struct vmw_private *dev_priv; + struct vmw_screen_object_unit *sou; + struct drm_connector *connector; + struct drm_display_mode *mode; + struct drm_encoder *encoder; + struct vmw_framebuffer *vfb; + struct drm_framebuffer *fb; + struct drm_crtc *crtc; + int ret = 0; + + if (!set) + return -EINVAL; + + if (!set->crtc) + return -EINVAL; + + /* get the sou */ + crtc = set->crtc; + sou = vmw_crtc_to_sou(crtc); + vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; + dev_priv = vmw_priv(crtc->dev); + + if (set->num_connectors > 1) { + DRM_ERROR("to many connectors\n"); + return -EINVAL; + } + + if (set->num_connectors == 1 && + set->connectors[0] != &sou->base.connector) { + DRM_ERROR("connector doesn't match %p %p\n", + set->connectors[0], &sou->base.connector); + return -EINVAL; + } + + /* sou only supports one fb active at the time */ + if (sou->base.is_implicit && + dev_priv->sou_priv->implicit_fb && vfb && + !(dev_priv->sou_priv->num_implicit == 1 && + sou->active_implicit) && + dev_priv->sou_priv->implicit_fb != vfb) { + DRM_ERROR("Multiple framebuffers not supported\n"); + return -EINVAL; + } + + /* since they always map one to one these are safe */ + connector = &sou->base.connector; + encoder = &sou->base.encoder; + + /* should we turn the crtc off */ + if (set->num_connectors == 0 || !set->mode || !set->fb) { + ret = vmw_sou_fifo_destroy(dev_priv, sou); + /* the hardware has hung don't do anything more */ + if (unlikely(ret != 0)) + return ret; + + connector->encoder = NULL; + encoder->crtc = NULL; + crtc->primary->fb = NULL; + crtc->x = 0; + crtc->y = 0; + crtc->enabled = false; + + vmw_sou_del_active(dev_priv, sou); + + vmw_sou_backing_free(dev_priv, sou); + + return 0; + } + + + /* we now know we want to set a mode */ + mode = set->mode; + fb = set->fb; + + if (set->x + mode->hdisplay > fb->width || + set->y + mode->vdisplay > fb->height) { + DRM_ERROR("set outside of framebuffer\n"); + return -EINVAL; + } + + vmw_fb_off(dev_priv); + + if (mode->hdisplay != crtc->mode.hdisplay || + mode->vdisplay != crtc->mode.vdisplay) { + /* no need to check if depth is different, because backing + * store depth is forced to 4 by the device. + */ + + ret = vmw_sou_fifo_destroy(dev_priv, sou); + /* the hardware has hung don't do anything more */ + if (unlikely(ret != 0)) + return ret; + + vmw_sou_backing_free(dev_priv, sou); + } + + if (!sou->buffer) { + /* forced to depth 4 by the device */ + size_t size = mode->hdisplay * mode->vdisplay * 4; + ret = vmw_sou_backing_alloc(dev_priv, sou, size); + if (unlikely(ret != 0)) + return ret; + } + + ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode); + if (unlikely(ret != 0)) { + /* + * We are in a bit of a situation here, the hardware has + * hung and we may or may not have a buffer hanging of + * the screen object, best thing to do is not do anything + * if we where defined, if not just turn the crtc of. + * Not what userspace wants but it needs to htfu. + */ + if (sou->defined) + return ret; + + connector->encoder = NULL; + encoder->crtc = NULL; + crtc->primary->fb = NULL; + crtc->x = 0; + crtc->y = 0; + crtc->enabled = false; + + return ret; + } + + vmw_sou_add_active(dev_priv, sou, vfb); + + connector->encoder = encoder; + encoder->crtc = crtc; + crtc->mode = *mode; + crtc->primary->fb = fb; + crtc->x = set->x; + crtc->y = set->y; + crtc->enabled = true; + + return 0; +} + +static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { + .save = vmw_du_crtc_save, + .restore = vmw_du_crtc_restore, + .cursor_set = vmw_du_crtc_cursor_set, + .cursor_move = vmw_du_crtc_cursor_move, + .gamma_set = vmw_du_crtc_gamma_set, + .destroy = vmw_sou_crtc_destroy, + .set_config = vmw_sou_crtc_set_config, + .page_flip = vmw_du_page_flip, +}; + +/* + * Screen Object Display Unit encoder functions + */ + +static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) +{ + vmw_sou_destroy(vmw_encoder_to_sou(encoder)); +} + +static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { + .destroy = vmw_sou_encoder_destroy, +}; + +/* + * Screen Object Display Unit connector functions + */ + +static void vmw_sou_connector_destroy(struct drm_connector *connector) +{ + vmw_sou_destroy(vmw_connector_to_sou(connector)); +} + +static struct drm_connector_funcs vmw_legacy_connector_funcs = { + .dpms = vmw_du_connector_dpms, + .save = vmw_du_connector_save, + .restore = vmw_du_connector_restore, + .detect = vmw_du_connector_detect, + .fill_modes = vmw_du_connector_fill_modes, + .set_property = vmw_du_connector_set_property, + .destroy = vmw_sou_connector_destroy, +}; + +static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) +{ + struct vmw_screen_object_unit *sou; + struct drm_device *dev = dev_priv->dev; + struct drm_connector *connector; + struct drm_encoder *encoder; + struct drm_crtc *crtc; + + sou = kzalloc(sizeof(*sou), GFP_KERNEL); + if (!sou) + return -ENOMEM; + + sou->base.unit = unit; + crtc = &sou->base.crtc; + encoder = &sou->base.encoder; + connector = &sou->base.connector; + + sou->active_implicit = false; + + sou->base.pref_active = (unit == 0); + sou->base.pref_width = dev_priv->initial_width; + sou->base.pref_height = dev_priv->initial_height; + sou->base.pref_mode = NULL; + sou->base.is_implicit = true; + + drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, + DRM_MODE_CONNECTOR_VIRTUAL); + connector->status = vmw_du_connector_detect(connector, true); + + drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs, + DRM_MODE_ENCODER_VIRTUAL); + drm_mode_connector_attach_encoder(connector, encoder); + encoder->possible_crtcs = (1 << unit); + encoder->possible_clones = 0; + + (void) drm_connector_register(connector); + + drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs); + + drm_mode_crtc_set_gamma_size(crtc, 256); + + drm_object_attach_property(&connector->base, + dev->mode_config.dirty_info_property, + 1); + + return 0; +} + +int vmw_kms_init_screen_object_display(struct vmw_private *dev_priv) +{ + struct drm_device *dev = dev_priv->dev; + int i, ret; + + if (dev_priv->sou_priv) { + DRM_INFO("sou system already on\n"); + return -EINVAL; + } + + if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) { + DRM_INFO("Not using screen objects," + " missing cap SCREEN_OBJECT_2\n"); + return -ENOSYS; + } + + ret = -ENOMEM; + dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL); + if (unlikely(!dev_priv->sou_priv)) + goto err_no_mem; + + dev_priv->sou_priv->num_implicit = 0; + dev_priv->sou_priv->implicit_fb = NULL; + + ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); + if (unlikely(ret != 0)) + goto err_free; + + ret = drm_mode_create_dirty_info_property(dev); + if (unlikely(ret != 0)) + goto err_vblank_cleanup; + + for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) + vmw_sou_init(dev_priv, i); + + DRM_INFO("Screen objects system initialized\n"); + + return 0; + +err_vblank_cleanup: + drm_vblank_cleanup(dev); +err_free: + kfree(dev_priv->sou_priv); + dev_priv->sou_priv = NULL; +err_no_mem: + return ret; +} + +int vmw_kms_close_screen_object_display(struct vmw_private *dev_priv) +{ + struct drm_device *dev = dev_priv->dev; + + if (!dev_priv->sou_priv) + return -ENOSYS; + + drm_vblank_cleanup(dev); + + kfree(dev_priv->sou_priv); + + return 0; +} + +/** + * Returns if this unit can be page flipped. + * Must be called with the mode_config mutex held. + */ +bool vmw_kms_screen_object_flippable(struct vmw_private *dev_priv, + struct drm_crtc *crtc) +{ + struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); + + if (!sou->base.is_implicit) + return true; + + if (dev_priv->sou_priv->num_implicit != 1) + return false; + + return true; +} + +/** + * Update the implicit fb to the current fb of this crtc. + * Must be called with the mode_config mutex held. + */ +void vmw_kms_screen_object_update_implicit_fb(struct vmw_private *dev_priv, + struct drm_crtc *crtc) +{ + struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); + + BUG_ON(!sou->base.is_implicit); + + dev_priv->sou_priv->implicit_fb = + vmw_framebuffer_to_vfb(sou->base.crtc.primary->fb); +} |