diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c | 1266 |
1 files changed, 1266 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c new file mode 100644 index 000000000..c22e2df1b --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c @@ -0,0 +1,1266 @@ +/****************************************************************************** + * + * COPYRIGHT © 2014-2015 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 "device_include/svga3d_surfacedefs.h" +#include <drm/drm_plane_helper.h> + +#define vmw_crtc_to_stdu(x) \ + container_of(x, struct vmw_screen_target_display_unit, base.crtc) +#define vmw_encoder_to_stdu(x) \ + container_of(x, struct vmw_screen_target_display_unit, base.encoder) +#define vmw_connector_to_stdu(x) \ + container_of(x, struct vmw_screen_target_display_unit, base.connector) + + + +enum stdu_content_type { + SAME_AS_DISPLAY = 0, + SEPARATE_SURFACE, + SEPARATE_DMA +}; + +/** + * struct vmw_stdu_dirty - closure structure for the update functions + * + * @base: The base type we derive from. Used by vmw_kms_helper_dirty(). + * @transfer: Transfer direction for DMA command. + * @left: Left side of bounding box. + * @right: Right side of bounding box. + * @top: Top side of bounding box. + * @bottom: Bottom side of bounding box. + * @buf: DMA buffer when DMA-ing between buffer and screen targets. + * @sid: Surface ID when copying between surface and screen targets. + */ +struct vmw_stdu_dirty { + struct vmw_kms_dirty base; + SVGA3dTransferType transfer; + s32 left, right, top, bottom; + u32 pitch; + union { + struct vmw_dma_buffer *buf; + u32 sid; + }; +}; + +/* + * SVGA commands that are used by this code. Please see the device headers + * for explanation. + */ +struct vmw_stdu_update { + SVGA3dCmdHeader header; + SVGA3dCmdUpdateGBScreenTarget body; +}; + +struct vmw_stdu_dma { + SVGA3dCmdHeader header; + SVGA3dCmdSurfaceDMA body; +}; + +struct vmw_stdu_surface_copy { + SVGA3dCmdHeader header; + SVGA3dCmdSurfaceCopy body; +}; + + +/** + * struct vmw_screen_target_display_unit + * + * @base: VMW specific DU structure + * @display_srf: surface to be displayed. The dimension of this will always + * match the display mode. If the display mode matches + * content_vfbs dimensions, then this is a pointer into the + * corresponding field in content_vfbs. If not, then this + * is a separate buffer to which content_vfbs will blit to. + * @content_fb: holds the rendered content, can be a surface or DMA buffer + * @content_type: content_fb type + * @defined: true if the current display unit has been initialized + */ +struct vmw_screen_target_display_unit { + struct vmw_display_unit base; + + struct vmw_surface *display_srf; + struct drm_framebuffer *content_fb; + + enum stdu_content_type content_fb_type; + + bool defined; +}; + + + +static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu); + + + +/****************************************************************************** + * Screen Target Display Unit helper Functions + *****************************************************************************/ + +/** + * vmw_stdu_pin_display - pins the resource associated with the display surface + * + * @stdu: contains the display surface + * + * Since the display surface can either be a private surface allocated by us, + * or it can point to the content surface, we use this function to not pin the + * same resource twice. + */ +static int vmw_stdu_pin_display(struct vmw_screen_target_display_unit *stdu) +{ + return vmw_resource_pin(&stdu->display_srf->res, false); +} + + + +/** + * vmw_stdu_unpin_display - unpins the resource associated with display surface + * + * @stdu: contains the display surface + * + * If the display surface was privatedly allocated by + * vmw_surface_gb_priv_define() and not registered as a framebuffer, then it + * won't be automatically cleaned up when all the framebuffers are freed. As + * such, we have to explicitly call vmw_resource_unreference() to get it freed. + */ +static void vmw_stdu_unpin_display(struct vmw_screen_target_display_unit *stdu) +{ + if (stdu->display_srf) { + struct vmw_resource *res = &stdu->display_srf->res; + + vmw_resource_unpin(res); + + if (stdu->content_fb_type != SAME_AS_DISPLAY) { + vmw_resource_unreference(&res); + stdu->content_fb_type = SAME_AS_DISPLAY; + } + + stdu->display_srf = NULL; + } +} + + + +/****************************************************************************** + * Screen Target Display Unit CRTC Functions + *****************************************************************************/ + + +/** + * vmw_stdu_crtc_destroy - cleans up the STDU + * + * @crtc: used to get a reference to the containing STDU + */ +static void vmw_stdu_crtc_destroy(struct drm_crtc *crtc) +{ + vmw_stdu_destroy(vmw_crtc_to_stdu(crtc)); +} + +/** + * vmw_stdu_define_st - Defines a Screen Target + * + * @dev_priv: VMW DRM device + * @stdu: display unit to create a Screen Target for + * + * Creates a STDU that we can used later. This function is called whenever the + * framebuffer size changes. + * + * RETURNs: + * 0 on success, error code on failure + */ +static int vmw_stdu_define_st(struct vmw_private *dev_priv, + struct vmw_screen_target_display_unit *stdu) +{ + struct { + SVGA3dCmdHeader header; + SVGA3dCmdDefineGBScreenTarget body; + } *cmd; + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + + if (unlikely(cmd == NULL)) { + DRM_ERROR("Out of FIFO space defining Screen Target\n"); + return -ENOMEM; + } + + cmd->header.id = SVGA_3D_CMD_DEFINE_GB_SCREENTARGET; + cmd->header.size = sizeof(cmd->body); + + cmd->body.stid = stdu->base.unit; + cmd->body.width = stdu->display_srf->base_size.width; + cmd->body.height = stdu->display_srf->base_size.height; + cmd->body.flags = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0; + cmd->body.dpi = 0; + cmd->body.xRoot = stdu->base.crtc.x; + cmd->body.yRoot = stdu->base.crtc.y; + + if (!stdu->base.is_implicit) { + cmd->body.xRoot = stdu->base.gui_x; + cmd->body.yRoot = stdu->base.gui_y; + } + + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + + stdu->defined = true; + + return 0; +} + + + +/** + * vmw_stdu_bind_st - Binds a surface to a Screen Target + * + * @dev_priv: VMW DRM device + * @stdu: display unit affected + * @res: Buffer to bind to the screen target. Set to NULL to blank screen. + * + * Binding a surface to a Screen Target the same as flipping + */ +static int vmw_stdu_bind_st(struct vmw_private *dev_priv, + struct vmw_screen_target_display_unit *stdu, + struct vmw_resource *res) +{ + SVGA3dSurfaceImageId image; + + struct { + SVGA3dCmdHeader header; + SVGA3dCmdBindGBScreenTarget body; + } *cmd; + + + if (!stdu->defined) { + DRM_ERROR("No screen target defined\n"); + return -EINVAL; + } + + /* Set up image using information in vfb */ + memset(&image, 0, sizeof(image)); + image.sid = res ? res->id : SVGA3D_INVALID_ID; + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + + if (unlikely(cmd == NULL)) { + DRM_ERROR("Out of FIFO space binding a screen target\n"); + return -ENOMEM; + } + + cmd->header.id = SVGA_3D_CMD_BIND_GB_SCREENTARGET; + cmd->header.size = sizeof(cmd->body); + + cmd->body.stid = stdu->base.unit; + cmd->body.image = image; + + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + + return 0; +} + +/** + * vmw_stdu_populate_update - populate an UPDATE_GB_SCREENTARGET command with a + * bounding box. + * + * @cmd: Pointer to command stream. + * @unit: Screen target unit. + * @left: Left side of bounding box. + * @right: Right side of bounding box. + * @top: Top side of bounding box. + * @bottom: Bottom side of bounding box. + */ +static void vmw_stdu_populate_update(void *cmd, int unit, + s32 left, s32 right, s32 top, s32 bottom) +{ + struct vmw_stdu_update *update = cmd; + + update->header.id = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET; + update->header.size = sizeof(update->body); + + update->body.stid = unit; + update->body.rect.x = left; + update->body.rect.y = top; + update->body.rect.w = right - left; + update->body.rect.h = bottom - top; +} + +/** + * vmw_stdu_update_st - Full update of a Screen Target + * + * @dev_priv: VMW DRM device + * @stdu: display unit affected + * + * This function needs to be called whenever the content of a screen + * target has changed completely. Typically as a result of a backing + * surface change. + * + * RETURNS: + * 0 on success, error code on failure + */ +static int vmw_stdu_update_st(struct vmw_private *dev_priv, + struct vmw_screen_target_display_unit *stdu) +{ + struct vmw_stdu_update *cmd; + struct drm_crtc *crtc = &stdu->base.crtc; + + if (!stdu->defined) { + DRM_ERROR("No screen target defined"); + return -EINVAL; + } + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + + if (unlikely(cmd == NULL)) { + DRM_ERROR("Out of FIFO space updating a Screen Target\n"); + return -ENOMEM; + } + + vmw_stdu_populate_update(cmd, stdu->base.unit, 0, crtc->mode.hdisplay, + 0, crtc->mode.vdisplay); + + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + + return 0; +} + + + +/** + * vmw_stdu_destroy_st - Destroy a Screen Target + * + * @dev_priv: VMW DRM device + * @stdu: display unit to destroy + */ +static int vmw_stdu_destroy_st(struct vmw_private *dev_priv, + struct vmw_screen_target_display_unit *stdu) +{ + int ret; + + struct { + SVGA3dCmdHeader header; + SVGA3dCmdDestroyGBScreenTarget body; + } *cmd; + + + /* Nothing to do if not successfully defined */ + if (unlikely(!stdu->defined)) + return 0; + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + + if (unlikely(cmd == NULL)) { + DRM_ERROR("Out of FIFO space, screen target not destroyed\n"); + return -ENOMEM; + } + + cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SCREENTARGET; + cmd->header.size = sizeof(cmd->body); + + cmd->body.stid = stdu->base.unit; + + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + + /* 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"); + + stdu->defined = false; + + return ret; +} + + + +/** + * vmw_stdu_crtc_set_config - Sets a mode + * + * @set: mode parameters + * + * This function is the device-specific portion of the DRM CRTC mode set. + * For the SVGA device, we do this by defining a Screen Target, binding a + * GB Surface to that target, and finally update the screen target. + * + * RETURNS: + * 0 on success, error code otherwise + */ +static int vmw_stdu_crtc_set_config(struct drm_mode_set *set) +{ + struct vmw_private *dev_priv; + struct vmw_screen_target_display_unit *stdu; + struct vmw_framebuffer *vfb; + struct vmw_framebuffer_surface *new_vfbs; + struct drm_display_mode *mode; + struct drm_framebuffer *new_fb; + struct drm_crtc *crtc; + struct drm_encoder *encoder; + struct drm_connector *connector; + int ret; + + + if (!set || !set->crtc) + return -EINVAL; + + crtc = set->crtc; + crtc->x = set->x; + crtc->y = set->y; + stdu = vmw_crtc_to_stdu(crtc); + mode = set->mode; + new_fb = set->fb; + dev_priv = vmw_priv(crtc->dev); + + + if (set->num_connectors > 1) { + DRM_ERROR("Too many connectors\n"); + return -EINVAL; + } + + if (set->num_connectors == 1 && + set->connectors[0] != &stdu->base.connector) { + DRM_ERROR("Connectors don't match %p %p\n", + set->connectors[0], &stdu->base.connector); + return -EINVAL; + } + + + /* Since they always map one to one these are safe */ + connector = &stdu->base.connector; + encoder = &stdu->base.encoder; + + + /* + * After this point the CRTC will be considered off unless a new fb + * is bound + */ + if (stdu->defined) { + /* Unbind current surface by binding an invalid one */ + ret = vmw_stdu_bind_st(dev_priv, stdu, NULL); + if (unlikely(ret != 0)) + return ret; + + /* Update Screen Target, display will now be blank */ + if (crtc->primary->fb) { + vmw_stdu_update_st(dev_priv, stdu); + if (unlikely(ret != 0)) + return ret; + } + + crtc->primary->fb = NULL; + crtc->enabled = false; + encoder->crtc = NULL; + connector->encoder = NULL; + + vmw_stdu_unpin_display(stdu); + stdu->content_fb = NULL; + stdu->content_fb_type = SAME_AS_DISPLAY; + + ret = vmw_stdu_destroy_st(dev_priv, stdu); + /* The hardware is hung, give up */ + if (unlikely(ret != 0)) + return ret; + } + + + /* Any of these conditions means the caller wants CRTC off */ + if (set->num_connectors == 0 || !mode || !new_fb) + return 0; + + + if (set->x + mode->hdisplay > new_fb->width || + set->y + mode->vdisplay > new_fb->height) { + DRM_ERROR("Set outside of framebuffer\n"); + return -EINVAL; + } + + stdu->content_fb = new_fb; + vfb = vmw_framebuffer_to_vfb(stdu->content_fb); + + if (vfb->dmabuf) + stdu->content_fb_type = SEPARATE_DMA; + + /* + * If the requested mode is different than the width and height + * of the FB or if the content buffer is a DMA buf, then allocate + * a display FB that matches the dimension of the mode + */ + if (mode->hdisplay != new_fb->width || + mode->vdisplay != new_fb->height || + stdu->content_fb_type != SAME_AS_DISPLAY) { + struct vmw_surface content_srf; + struct drm_vmw_size display_base_size = {0}; + struct vmw_surface *display_srf; + + + display_base_size.width = mode->hdisplay; + display_base_size.height = mode->vdisplay; + display_base_size.depth = 1; + + /* + * If content buffer is a DMA buf, then we have to construct + * surface info + */ + if (stdu->content_fb_type == SEPARATE_DMA) { + + switch (new_fb->bits_per_pixel) { + case 32: + content_srf.format = SVGA3D_X8R8G8B8; + break; + + case 16: + content_srf.format = SVGA3D_R5G6B5; + break; + + case 8: + content_srf.format = SVGA3D_P8; + break; + + default: + DRM_ERROR("Invalid format\n"); + ret = -EINVAL; + goto err_unref_content; + } + + content_srf.flags = 0; + content_srf.mip_levels[0] = 1; + content_srf.multisample_count = 0; + } else { + + stdu->content_fb_type = SEPARATE_SURFACE; + + new_vfbs = vmw_framebuffer_to_vfbs(new_fb); + content_srf = *new_vfbs->surface; + } + + + ret = vmw_surface_gb_priv_define(crtc->dev, + 0, /* because kernel visible only */ + content_srf.flags, + content_srf.format, + true, /* a scanout buffer */ + content_srf.mip_levels[0], + content_srf.multisample_count, + 0, + display_base_size, + &display_srf); + if (unlikely(ret != 0)) { + DRM_ERROR("Cannot allocate a display FB.\n"); + goto err_unref_content; + } + + stdu->display_srf = display_srf; + } else { + new_vfbs = vmw_framebuffer_to_vfbs(new_fb); + stdu->display_srf = new_vfbs->surface; + } + + + ret = vmw_stdu_pin_display(stdu); + if (unlikely(ret != 0)) { + stdu->display_srf = NULL; + goto err_unref_content; + } + + vmw_svga_enable(dev_priv); + + /* + * Steps to displaying a surface, assume surface is already + * bound: + * 1. define a screen target + * 2. bind a fb to the screen target + * 3. update that screen target (this is done later by + * vmw_kms_stdu_do_surface_dirty_or_present) + */ + ret = vmw_stdu_define_st(dev_priv, stdu); + if (unlikely(ret != 0)) + goto err_unpin_display_and_content; + + ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res); + if (unlikely(ret != 0)) + goto err_unpin_destroy_st; + + + connector->encoder = encoder; + encoder->crtc = crtc; + + crtc->mode = *mode; + crtc->primary->fb = new_fb; + crtc->enabled = true; + + return ret; + +err_unpin_destroy_st: + vmw_stdu_destroy_st(dev_priv, stdu); +err_unpin_display_and_content: + vmw_stdu_unpin_display(stdu); +err_unref_content: + stdu->content_fb = NULL; + return ret; +} + + + +/** + * vmw_stdu_crtc_page_flip - Binds a buffer to a screen target + * + * @crtc: CRTC to attach FB to + * @fb: FB to attach + * @event: Event to be posted. This event should've been alloced + * using k[mz]alloc, and should've been completely initialized. + * @page_flip_flags: Input flags. + * + * If the STDU uses the same display and content buffers, i.e. a true flip, + * this function will replace the existing display buffer with the new content + * buffer. + * + * If the STDU uses different display and content buffers, i.e. a blit, then + * only the content buffer will be updated. + * + * RETURNS: + * 0 on success, error code on failure + */ +static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc, + struct drm_framebuffer *new_fb, + struct drm_pending_vblank_event *event, + uint32_t flags) + +{ + struct vmw_private *dev_priv = vmw_priv(crtc->dev); + struct vmw_screen_target_display_unit *stdu; + int ret; + + if (crtc == NULL) + return -EINVAL; + + dev_priv = vmw_priv(crtc->dev); + stdu = vmw_crtc_to_stdu(crtc); + crtc->primary->fb = new_fb; + stdu->content_fb = new_fb; + + if (stdu->display_srf) { + /* + * If the display surface is the same as the content surface + * then remove the reference + */ + if (stdu->content_fb_type == SAME_AS_DISPLAY) { + if (stdu->defined) { + /* Unbind the current surface */ + ret = vmw_stdu_bind_st(dev_priv, stdu, NULL); + if (unlikely(ret != 0)) + goto err_out; + } + vmw_stdu_unpin_display(stdu); + stdu->display_srf = NULL; + } + } + + + if (!new_fb) { + /* Blanks the display */ + (void) vmw_stdu_update_st(dev_priv, stdu); + + return 0; + } + + + if (stdu->content_fb_type == SAME_AS_DISPLAY) { + stdu->display_srf = vmw_framebuffer_to_vfbs(new_fb)->surface; + ret = vmw_stdu_pin_display(stdu); + if (ret) { + stdu->display_srf = NULL; + goto err_out; + } + + /* Bind display surface */ + ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res); + if (unlikely(ret != 0)) + goto err_unpin_display_and_content; + } + + /* Update display surface: after this point everything is bound */ + ret = vmw_stdu_update_st(dev_priv, stdu); + if (unlikely(ret != 0)) + return ret; + + if (event) { + struct vmw_fence_obj *fence = NULL; + struct drm_file *file_priv = event->base.file_priv; + + vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL); + if (!fence) + return -ENOMEM; + + ret = vmw_event_fence_action_queue(file_priv, fence, + &event->base, + &event->event.tv_sec, + &event->event.tv_usec, + true); + vmw_fence_obj_unreference(&fence); + } + + return ret; + +err_unpin_display_and_content: + vmw_stdu_unpin_display(stdu); +err_out: + crtc->primary->fb = NULL; + stdu->content_fb = NULL; + return ret; +} + + +/** + * vmw_stdu_dmabuf_clip - Callback to encode a suface DMA command cliprect + * + * @dirty: The closure structure. + * + * Encodes a surface DMA command cliprect and updates the bounding box + * for the DMA. + */ +static void vmw_stdu_dmabuf_clip(struct vmw_kms_dirty *dirty) +{ + struct vmw_stdu_dirty *ddirty = + container_of(dirty, struct vmw_stdu_dirty, base); + struct vmw_stdu_dma *cmd = dirty->cmd; + struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1]; + + blit += dirty->num_hits; + blit->srcx = dirty->fb_x; + blit->srcy = dirty->fb_y; + blit->x = dirty->unit_x1; + blit->y = dirty->unit_y1; + blit->d = 1; + blit->w = dirty->unit_x2 - dirty->unit_x1; + blit->h = dirty->unit_y2 - dirty->unit_y1; + dirty->num_hits++; + + if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM) + return; + + /* Destination bounding box */ + ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1); + ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1); + ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2); + ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2); +} + +/** + * vmw_stdu_dmabuf_fifo_commit - Callback to fill in and submit a DMA command. + * + * @dirty: The closure structure. + * + * Fills in the missing fields in a DMA command, and optionally encodes + * a screen target update command, depending on transfer direction. + */ +static void vmw_stdu_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty) +{ + struct vmw_stdu_dirty *ddirty = + container_of(dirty, struct vmw_stdu_dirty, base); + struct vmw_screen_target_display_unit *stdu = + container_of(dirty->unit, typeof(*stdu), base); + struct vmw_stdu_dma *cmd = dirty->cmd; + struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1]; + SVGA3dCmdSurfaceDMASuffix *suffix = + (SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits]; + size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix); + + if (!dirty->num_hits) { + vmw_fifo_commit(dirty->dev_priv, 0); + return; + } + + cmd->header.id = SVGA_3D_CMD_SURFACE_DMA; + cmd->header.size = sizeof(cmd->body) + blit_size; + vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr); + cmd->body.guest.pitch = ddirty->pitch; + cmd->body.host.sid = stdu->display_srf->res.id; + cmd->body.host.face = 0; + cmd->body.host.mipmap = 0; + cmd->body.transfer = ddirty->transfer; + suffix->suffixSize = sizeof(*suffix); + suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE; + + if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) { + blit_size += sizeof(struct vmw_stdu_update); + + vmw_stdu_populate_update(&suffix[1], stdu->base.unit, + ddirty->left, ddirty->right, + ddirty->top, ddirty->bottom); + } + + vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size); + + ddirty->left = ddirty->top = S32_MAX; + ddirty->right = ddirty->bottom = S32_MIN; +} + +/** + * vmw_kms_stdu_dma - Perform a DMA transfer between a dma-buffer backed + * framebuffer and the screen target system. + * + * @dev_priv: Pointer to the device private structure. + * @file_priv: Pointer to a struct drm-file identifying the caller. May be + * set to NULL, but then @user_fence_rep must also be set to NULL. + * @vfb: Pointer to the dma-buffer backed framebuffer. + * @clips: Array of clip rects. Either @clips or @vclips must be NULL. + * @vclips: Alternate array of clip rects. Either @clips or @vclips must + * be NULL. + * @num_clips: Number of clip rects in @clips or @vclips. + * @increment: Increment to use when looping over @clips or @vclips. + * @to_surface: Whether to DMA to the screen target system as opposed to + * from the screen target system. + * @interruptible: Whether to perform waits interruptible if possible. + * + * If DMA-ing till the screen target system, the function will also notify + * the screen target system that a bounding box of the cliprects has been + * updated. + * Returns 0 on success, negative error code on failure. -ERESTARTSYS if + * interrupted. + */ +int vmw_kms_stdu_dma(struct vmw_private *dev_priv, + struct drm_file *file_priv, + struct vmw_framebuffer *vfb, + struct drm_vmw_fence_rep __user *user_fence_rep, + struct drm_clip_rect *clips, + struct drm_vmw_rect *vclips, + uint32_t num_clips, + int increment, + bool to_surface, + bool interruptible) +{ + struct vmw_dma_buffer *buf = + container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer; + struct vmw_stdu_dirty ddirty; + int ret; + + ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible, + false); + if (ret) + return ret; + + ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM : + SVGA3D_READ_HOST_VRAM; + ddirty.left = ddirty.top = S32_MAX; + ddirty.right = ddirty.bottom = S32_MIN; + ddirty.pitch = vfb->base.pitches[0]; + ddirty.buf = buf; + ddirty.base.fifo_commit = vmw_stdu_dmabuf_fifo_commit; + ddirty.base.clip = vmw_stdu_dmabuf_clip; + ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) + + num_clips * sizeof(SVGA3dCopyBox) + + sizeof(SVGA3dCmdSurfaceDMASuffix); + if (to_surface) + ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update); + + ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips, + 0, 0, num_clips, increment, &ddirty.base); + vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL, + user_fence_rep); + + return ret; +} + +/** + * vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect + * + * @dirty: The closure structure. + * + * Encodes a surface copy command cliprect and updates the bounding box + * for the copy. + */ +static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty) +{ + struct vmw_stdu_dirty *sdirty = + container_of(dirty, struct vmw_stdu_dirty, base); + struct vmw_stdu_surface_copy *cmd = dirty->cmd; + struct vmw_screen_target_display_unit *stdu = + container_of(dirty->unit, typeof(*stdu), base); + + if (sdirty->sid != stdu->display_srf->res.id) { + struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1]; + + blit += dirty->num_hits; + blit->srcx = dirty->fb_x; + blit->srcy = dirty->fb_y; + blit->x = dirty->unit_x1; + blit->y = dirty->unit_y1; + blit->d = 1; + blit->w = dirty->unit_x2 - dirty->unit_x1; + blit->h = dirty->unit_y2 - dirty->unit_y1; + } + + dirty->num_hits++; + + /* Destination bounding box */ + sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1); + sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1); + sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2); + sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2); +} + +/** + * vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface + * copy command. + * + * @dirty: The closure structure. + * + * Fills in the missing fields in a surface copy command, and encodes a screen + * target update command. + */ +static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty) +{ + struct vmw_stdu_dirty *sdirty = + container_of(dirty, struct vmw_stdu_dirty, base); + struct vmw_screen_target_display_unit *stdu = + container_of(dirty->unit, typeof(*stdu), base); + struct vmw_stdu_surface_copy *cmd = dirty->cmd; + struct vmw_stdu_update *update; + size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits; + size_t commit_size; + + if (!dirty->num_hits) { + vmw_fifo_commit(dirty->dev_priv, 0); + return; + } + + if (sdirty->sid != stdu->display_srf->res.id) { + struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1]; + + cmd->header.id = SVGA_3D_CMD_SURFACE_COPY; + cmd->header.size = sizeof(cmd->body) + blit_size; + cmd->body.src.sid = sdirty->sid; + cmd->body.dest.sid = stdu->display_srf->res.id; + update = (struct vmw_stdu_update *) &blit[dirty->num_hits]; + commit_size = sizeof(*cmd) + blit_size + sizeof(*update); + } else { + update = dirty->cmd; + commit_size = sizeof(*update); + } + + vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left, + sdirty->right, sdirty->top, sdirty->bottom); + + vmw_fifo_commit(dirty->dev_priv, commit_size); + + sdirty->left = sdirty->top = S32_MAX; + sdirty->right = sdirty->bottom = S32_MIN; +} + +/** + * vmw_kms_stdu_surface_dirty - Dirty part of a surface backed framebuffer + * + * @dev_priv: Pointer to the device private structure. + * @framebuffer: Pointer to the surface-buffer backed framebuffer. + * @clips: Array of clip rects. Either @clips or @vclips must be NULL. + * @vclips: Alternate array of clip rects. Either @clips or @vclips must + * be NULL. + * @srf: Pointer to surface to blit from. If NULL, the surface attached + * to @framebuffer will be used. + * @dest_x: X coordinate offset to align @srf with framebuffer coordinates. + * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates. + * @num_clips: Number of clip rects in @clips. + * @inc: Increment to use when looping over @clips. + * @out_fence: If non-NULL, will return a ref-counted pointer to a + * struct vmw_fence_obj. The returned fence pointer may be NULL in which + * case the device has already synchronized. + * + * Returns 0 on success, negative error code on failure. -ERESTARTSYS if + * interrupted. + */ +int vmw_kms_stdu_surface_dirty(struct vmw_private *dev_priv, + struct vmw_framebuffer *framebuffer, + struct drm_clip_rect *clips, + struct drm_vmw_rect *vclips, + struct vmw_resource *srf, + s32 dest_x, + s32 dest_y, + unsigned num_clips, int inc, + struct vmw_fence_obj **out_fence) +{ + struct vmw_framebuffer_surface *vfbs = + container_of(framebuffer, typeof(*vfbs), base); + struct vmw_stdu_dirty sdirty; + int ret; + + if (!srf) + srf = &vfbs->surface->res; + + ret = vmw_kms_helper_resource_prepare(srf, true); + if (ret) + return ret; + + if (vfbs->is_dmabuf_proxy) { + ret = vmw_kms_update_proxy(srf, clips, num_clips, inc); + if (ret) + goto out_finish; + } + + sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit; + sdirty.base.clip = vmw_kms_stdu_surface_clip; + sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) + + sizeof(SVGA3dCopyBox) * num_clips + + sizeof(struct vmw_stdu_update); + sdirty.sid = srf->id; + sdirty.left = sdirty.top = S32_MAX; + sdirty.right = sdirty.bottom = S32_MIN; + + ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips, + dest_x, dest_y, num_clips, inc, + &sdirty.base); +out_finish: + vmw_kms_helper_resource_finish(srf, out_fence); + + return ret; +} + + +/* + * Screen Target CRTC dispatch table + */ +static struct drm_crtc_funcs vmw_stdu_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_stdu_crtc_destroy, + .set_config = vmw_stdu_crtc_set_config, + .page_flip = vmw_stdu_crtc_page_flip, +}; + + + +/****************************************************************************** + * Screen Target Display Unit Encoder Functions + *****************************************************************************/ + +/** + * vmw_stdu_encoder_destroy - cleans up the STDU + * + * @encoder: used the get the containing STDU + * + * vmwgfx cleans up crtc/encoder/connector all at the same time so technically + * this can be a no-op. Nevertheless, it doesn't hurt of have this in case + * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't + * get called. + */ +static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder) +{ + vmw_stdu_destroy(vmw_encoder_to_stdu(encoder)); +} + +static struct drm_encoder_funcs vmw_stdu_encoder_funcs = { + .destroy = vmw_stdu_encoder_destroy, +}; + + + +/****************************************************************************** + * Screen Target Display Unit Connector Functions + *****************************************************************************/ + +/** + * vmw_stdu_connector_destroy - cleans up the STDU + * + * @connector: used to get the containing STDU + * + * vmwgfx cleans up crtc/encoder/connector all at the same time so technically + * this can be a no-op. Nevertheless, it doesn't hurt of have this in case + * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't + * get called. + */ +static void vmw_stdu_connector_destroy(struct drm_connector *connector) +{ + vmw_stdu_destroy(vmw_connector_to_stdu(connector)); +} + + + +static struct drm_connector_funcs vmw_stdu_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_stdu_connector_destroy, +}; + + + +/** + * vmw_stdu_init - Sets up a Screen Target Display Unit + * + * @dev_priv: VMW DRM device + * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS + * + * This function is called once per CRTC, and allocates one Screen Target + * display unit to represent that CRTC. Since the SVGA device does not separate + * out encoder and connector, they are represented as part of the STDU as well. + */ +static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit) +{ + struct vmw_screen_target_display_unit *stdu; + struct drm_device *dev = dev_priv->dev; + struct drm_connector *connector; + struct drm_encoder *encoder; + struct drm_crtc *crtc; + + + stdu = kzalloc(sizeof(*stdu), GFP_KERNEL); + if (!stdu) + return -ENOMEM; + + stdu->base.unit = unit; + crtc = &stdu->base.crtc; + encoder = &stdu->base.encoder; + connector = &stdu->base.connector; + + stdu->base.pref_active = (unit == 0); + stdu->base.pref_width = dev_priv->initial_width; + stdu->base.pref_height = dev_priv->initial_height; + stdu->base.is_implicit = true; + + drm_connector_init(dev, connector, &vmw_stdu_connector_funcs, + DRM_MODE_CONNECTOR_VIRTUAL); + connector->status = vmw_du_connector_detect(connector, false); + + drm_encoder_init(dev, encoder, &vmw_stdu_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_stdu_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; +} + + + +/** + * vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit + * + * @stdu: Screen Target Display Unit to be destroyed + * + * Clean up after vmw_stdu_init + */ +static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu) +{ + vmw_stdu_unpin_display(stdu); + + vmw_du_cleanup(&stdu->base); + kfree(stdu); +} + + + +/****************************************************************************** + * Screen Target Display KMS Functions + * + * These functions are called by the common KMS code in vmwgfx_kms.c + *****************************************************************************/ + +/** + * vmw_kms_stdu_init_display - Initializes a Screen Target based display + * + * @dev_priv: VMW DRM device + * + * This function initialize a Screen Target based display device. It checks + * the capability bits to make sure the underlying hardware can support + * screen targets, and then creates the maximum number of CRTCs, a.k.a Display + * Units, as supported by the display hardware. + * + * RETURNS: + * 0 on success, error code otherwise + */ +int vmw_kms_stdu_init_display(struct vmw_private *dev_priv) +{ + struct drm_device *dev = dev_priv->dev; + int i, ret; + + + /* Do nothing if Screen Target support is turned off */ + if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE) + return -ENOSYS; + + if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) + return -ENOSYS; + + ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); + if (unlikely(ret != 0)) + return ret; + + ret = drm_mode_create_dirty_info_property(dev); + if (unlikely(ret != 0)) + goto err_vblank_cleanup; + + dev_priv->active_display_unit = vmw_du_screen_target; + + for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) { + ret = vmw_stdu_init(dev_priv, i); + + if (unlikely(ret != 0)) { + DRM_ERROR("Failed to initialize STDU %d", i); + goto err_vblank_cleanup; + } + } + + DRM_INFO("Screen Target Display device initialized\n"); + + return 0; + +err_vblank_cleanup: + drm_vblank_cleanup(dev); + return ret; +} + + + +/** + * vmw_kms_stdu_close_display - Cleans up after vmw_kms_stdu_init_display + * + * @dev_priv: VMW DRM device + * + * Frees up any resources allocated by vmw_kms_stdu_init_display + * + * RETURNS: + * 0 on success + */ +int vmw_kms_stdu_close_display(struct vmw_private *dev_priv) +{ + struct drm_device *dev = dev_priv->dev; + + drm_vblank_cleanup(dev); + + return 0; +} |