--- /dev/null
+/******************************************************************************
+ *
+ * Copyright © 2014 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 "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_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);
+}
+
+
+
+/**
+ * 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_content_copy - copies an area from the content to display surface
+ *
+ * @dev_priv: VMW DRM device
+ * @file_priv: Pointer to a drm file private structure
+ * @stdu: STDU whose display surface will be blitted to
+ * @content_x: top/left corner of the content area to blit from
+ * @content_y: top/left corner of the content area to blit from
+ * @width: width of the blit area
+ * @height: height of the blit area
+ * @display_x: top/left corner of the display area to blit to
+ * @display_y: top/left corner of the display area to blit to
+ *
+ * Copies an area from the content surface to the display surface.
+ *
+ * RETURNs:
+ * 0 on success, error code on failure
+ */
+static int vmw_stdu_content_copy(struct vmw_private *dev_priv,
+ struct drm_file *file_priv,
+ struct vmw_screen_target_display_unit *stdu,
+ uint32_t content_x, uint32_t content_y,
+ uint32_t width, uint32_t height,
+ uint32_t display_x, uint32_t display_y)
+{
+ size_t fifo_size;
+ int ret;
+ void *cmd;
+
+ struct vmw_surface_dma {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdSurfaceDMA body;
+ SVGA3dCopyBox area;
+ SVGA3dCmdSurfaceDMASuffix suffix;
+ } surface_dma_cmd;
+
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdSurfaceCopy body;
+ SVGA3dCopyBox area;
+ } surface_cpy_cmd;
+
+
+ /*
+ * Can only copy if content and display surfaces exist and are not
+ * the same surface
+ */
+ if (stdu->display_srf == NULL || stdu->content_fb == NULL ||
+ stdu->content_fb_type == SAME_AS_DISPLAY) {
+ return -EINVAL;
+ }
+
+ if (stdu->content_fb_type == SEPARATE_DMA) {
+ struct vmw_framebuffer *content_vfb;
+ struct vmw_framebuffer_dmabuf *content_vfbd;
+ struct vmw_framebuffer_surface *content_vfbs;
+ struct drm_vmw_size cur_size = {0};
+ const struct svga3d_surface_desc *desc;
+ SVGA3dCmdSurfaceDMASuffix *suffix;
+ SVGAGuestPtr ptr;
+
+ content_vfb = vmw_framebuffer_to_vfb(stdu->content_fb);
+ content_vfbd = vmw_framebuffer_to_vfbd(stdu->content_fb);
+ content_vfbs = vmw_framebuffer_to_vfbs(stdu->content_fb);
+
+ cur_size.width = width;
+ cur_size.height = height;
+ cur_size.depth = 1;
+
+ desc = svga3dsurface_get_desc(content_vfbs->surface->format);
+
+
+ fifo_size = sizeof(surface_dma_cmd);
+
+ memset(&surface_dma_cmd, 0, fifo_size);
+
+ ptr.gmrId = content_vfb->user_handle;
+ ptr.offset = 0;
+
+ surface_dma_cmd.header.id = SVGA_3D_CMD_SURFACE_DMA;
+ surface_dma_cmd.header.size = sizeof(surface_dma_cmd.body) +
+ sizeof(surface_dma_cmd.area) +
+ sizeof(surface_dma_cmd.suffix);
+
+ surface_dma_cmd.body.guest.ptr = ptr;
+ surface_dma_cmd.body.guest.pitch = stdu->content_fb->pitches[0];
+ surface_dma_cmd.body.host.sid = stdu->display_srf->res.id;
+ surface_dma_cmd.body.host.face = 0;
+ surface_dma_cmd.body.host.mipmap = 0;
+ surface_dma_cmd.body.transfer = SVGA3D_WRITE_HOST_VRAM;
+
+ surface_dma_cmd.area.srcx = content_x;
+ surface_dma_cmd.area.srcy = content_y;
+ surface_dma_cmd.area.x = display_x;
+ surface_dma_cmd.area.y = display_y;
+ surface_dma_cmd.area.d = 1;
+ surface_dma_cmd.area.w = width;
+ surface_dma_cmd.area.h = height;
+
+ suffix = &surface_dma_cmd.suffix;
+
+ suffix->suffixSize = sizeof(*suffix);
+ suffix->maximumOffset = svga3dsurface_get_image_buffer_size(
+ desc,
+ &cur_size,
+ stdu->content_fb->pitches[0]);
+
+ cmd = (void *) &surface_dma_cmd;
+ } else {
+ struct vmw_framebuffer *content_vfb;
+
+ content_vfb = vmw_framebuffer_to_vfb(stdu->content_fb);
+
+ fifo_size = sizeof(surface_cpy_cmd);
+
+ memset(&surface_cpy_cmd, 0, sizeof(surface_cpy_cmd));
+
+ surface_cpy_cmd.header.id = SVGA_3D_CMD_SURFACE_COPY;
+ surface_cpy_cmd.header.size = sizeof(surface_cpy_cmd.body) +
+ sizeof(surface_cpy_cmd.area);
+
+ surface_cpy_cmd.body.src.sid = content_vfb->user_handle;
+ surface_cpy_cmd.body.dest.sid = stdu->display_srf->res.id;
+
+ surface_cpy_cmd.area.srcx = content_x;
+ surface_cpy_cmd.area.srcy = content_y;
+ surface_cpy_cmd.area.x = display_x;
+ surface_cpy_cmd.area.y = display_y;
+ surface_cpy_cmd.area.d = 1;
+ surface_cpy_cmd.area.w = width;
+ surface_cpy_cmd.area.h = height;
+
+ cmd = (void *) &surface_cpy_cmd;
+ }
+
+ ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
+ fifo_size, 0, VMW_QUIRK_SCREENTARGET,
+ NULL, NULL);
+
+ return ret;
+}
+
+
+
+/**
+ * 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_update_st - Updates a Screen Target
+ *
+ * @dev_priv: VMW DRM device
+ * @file_priv: Pointer to a drm file private structure
+ * @stdu: display unit affected
+ * @update_area: area that needs to be updated
+ *
+ * This function needs to be called whenever the content of a screen
+ * target changes.
+ * If the display and content buffers are different, then this function does
+ * a blit first from the content buffer to the display buffer before issuing
+ * the Screen Target update command.
+ *
+ * RETURNS:
+ * 0 on success, error code on failure
+ */
+static int vmw_stdu_update_st(struct vmw_private *dev_priv,
+ struct drm_file *file_priv,
+ struct vmw_screen_target_display_unit *stdu,
+ struct drm_clip_rect *update_area)
+{
+ u32 width, height;
+ u32 display_update_x, display_update_y;
+ unsigned short display_x1, display_y1, display_x2, display_y2;
+
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdUpdateGBScreenTarget body;
+ } *cmd;
+
+
+ if (!stdu->defined) {
+ DRM_ERROR("No screen target defined");
+ return -EINVAL;
+ }
+
+ /* Display coordinates relative to its position in content surface */
+ display_x1 = stdu->base.crtc.x;
+ display_y1 = stdu->base.crtc.y;
+ display_x2 = display_x1 + stdu->display_srf->base_size.width;
+ display_y2 = display_y1 + stdu->display_srf->base_size.height;
+
+ /* Do nothing if the update area is outside of the display surface */
+ if (update_area->x2 <= display_x1 || update_area->x1 >= display_x2 ||
+ update_area->y2 <= display_y1 || update_area->y1 >= display_y2)
+ return 0;
+
+ /* The top-left hand corner of the update area in display surface */
+ display_update_x = max(update_area->x1 - display_x1, 0);
+ display_update_y = max(update_area->y1 - display_y1, 0);
+
+ width = min(update_area->x2, display_x2) -
+ max(update_area->x1, display_x1);
+ height = min(update_area->y2, display_y2) -
+ max(update_area->y1, display_y1);
+
+ if (file_priv && stdu->content_fb_type != SAME_AS_DISPLAY) {
+ int ret;
+
+ ret = vmw_stdu_content_copy(dev_priv, file_priv,
+ stdu,
+ max(update_area->x1, display_x1),
+ max(update_area->y1, display_y1),
+ width, height,
+ display_update_x, display_update_y);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Failed to blit content\n");
+ return ret;
+ }
+ }
+
+ 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;
+ }
+
+ cmd->header.id = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET;
+ cmd->header.size = sizeof(cmd->body);
+
+ cmd->body.stid = stdu->base.unit;
+ cmd->body.rect.x = display_update_x;
+ cmd->body.rect.y = display_update_y;
+ cmd->body.rect.w = width;
+ cmd->body.rect.h = height;
+
+ 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;
+ struct drm_clip_rect update_area = {0};
+ 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) {
+ update_area.x2 = crtc->primary->fb->width;
+ update_area.y2 = crtc->primary->fb->height;
+
+ ret = vmw_stdu_update_st(dev_priv, NULL,
+ stdu,
+ &update_area);
+ 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,
+ 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_fb_off(dev_priv);
+ 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;
+ struct drm_file *file_priv;
+ struct drm_clip_rect update_area = {0};
+ int ret;
+
+ /*
+ * Temporarily don't support event == NULL. We need the
+ * @file_priv pointer!
+ */
+ if (event == NULL)
+ return -EINVAL;
+
+ 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) {
+ update_area.x2 = stdu->display_srf->base_size.width;
+ update_area.y2 = stdu->display_srf->base_size.height;
+
+ /*
+ * 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, NULL, stdu, &update_area);
+
+ 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 */
+ update_area.x2 = stdu->display_srf->base_size.width;
+ update_area.y2 = stdu->display_srf->base_size.height;
+
+ file_priv = event->base.file_priv;
+ ret = vmw_stdu_update_st(dev_priv, file_priv, stdu, &update_area);
+ if (unlikely(ret != 0))
+ return ret;
+
+ if (event) {
+ struct vmw_fence_obj *fence = NULL;
+
+ 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;
+}
+
+
+
+/*
+ * 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.pref_mode = NULL;
+ 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) ||
+ !(dev_priv->capabilities & SVGA_CAP_3D))
+ 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;
+
+ 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;
+ }
+ }
+
+ dev_priv->active_display_unit = vmw_du_screen_target;
+
+ 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;
+}
+
+
+
+/**
+ * vmw_kms_stdu_do_surface_dirty - updates a dirty rectange to SVGA device
+ *
+ * @dev_priv: VMW DRM device
+ * @file_priv: Pointer to a drm file private structure
+ * @framebuffer: FB with the new content to be copied to SVGA device
+ * @clip_rects: array of dirty rectanges
+ * @num_of_clip_rects: number of rectanges in @clips
+ * @increment: increment to the next dirty rect in @clips
+ *
+ * This function sends an Update command to the SVGA device. This will notify
+ * the device that a region needs to be copied to the screen. At this time
+ * we are not coalescing clip rects into one large clip rect because the SVGA
+ * device will do it for us.
+ *
+ * RETURNS:
+ * 0 on success, error code otherwise
+ */
+int vmw_kms_stdu_do_surface_dirty(struct vmw_private *dev_priv,
+ struct drm_file *file_priv,
+ struct vmw_framebuffer *framebuffer,
+ struct drm_clip_rect *clip_rects,
+ unsigned num_of_clip_rects, int increment)
+{
+ struct vmw_screen_target_display_unit *stdu[VMWGFX_NUM_DISPLAY_UNITS];
+ struct drm_clip_rect *cur_rect;
+ struct drm_crtc *crtc;
+
+ unsigned num_of_du = 0, cur_du, count = 0;
+ int ret = 0;
+
+
+ BUG_ON(!clip_rects || !num_of_clip_rects);
+
+ /* Figure out all the DU affected by this surface */
+ list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list,
+ head) {
+ if (crtc->primary->fb != &framebuffer->base)
+ continue;
+
+ stdu[num_of_du++] = vmw_crtc_to_stdu(crtc);
+ }
+
+ for (cur_du = 0; cur_du < num_of_du; cur_du++)
+ for (cur_rect = clip_rects, count = 0;
+ count < num_of_clip_rects && ret == 0;
+ cur_rect += increment, count++) {
+ ret = vmw_stdu_update_st(dev_priv, file_priv,
+ stdu[cur_du],
+ cur_rect);
+ }
+
+ return ret;
+}
+
+
+
+/**
+ * vmw_kms_stdu_present - present a surface to the display surface
+ *
+ * @dev_priv: VMW DRM device
+ * @file_priv: Pointer to a drm file private structure
+ * @vfb: Used to pick which STDU(s) is affected
+ * @user_handle: user handle for the source surface
+ * @dest_x: top/left corner of the display area to blit to
+ * @dest_y: top/left corner of the display area to blit to
+ * @clip_rects: array of dirty rectanges
+ * @num_of_clip_rects: number of rectanges in @clips
+ *
+ * This function copies a surface onto the display surface, and
+ * updates the screen target. Strech blit is currently not
+ * supported.
+ *
+ * RETURNS:
+ * 0 on success, error code otherwise
+ */
+int vmw_kms_stdu_present(struct vmw_private *dev_priv,
+ struct drm_file *file_priv,
+ struct vmw_framebuffer *vfb,
+ uint32_t user_handle,
+ int32_t dest_x, int32_t dest_y,
+ struct drm_vmw_rect *clip_rects,
+ uint32_t num_of_clip_rects)
+{
+ struct vmw_screen_target_display_unit *stdu[VMWGFX_NUM_DISPLAY_UNITS];
+ struct drm_clip_rect *update_area;
+ struct drm_crtc *crtc;
+ size_t fifo_size;
+ int num_of_du = 0, cur_du, i;
+ int ret = 0;
+ struct vmw_clip_rect src_bb;
+
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdSurfaceCopy body;
+ } *cmd;
+ SVGA3dCopyBox *blits;
+
+
+ BUG_ON(!clip_rects || !num_of_clip_rects);
+
+ list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
+ if (crtc->primary->fb != &vfb->base)
+ continue;
+
+ stdu[num_of_du++] = vmw_crtc_to_stdu(crtc);
+ }
+
+
+ update_area = kcalloc(num_of_clip_rects, sizeof(*update_area),
+ GFP_KERNEL);
+ if (unlikely(update_area == NULL)) {
+ DRM_ERROR("Temporary clip rect memory alloc failed.\n");
+ return -ENOMEM;
+ }
+
+
+ fifo_size = sizeof(*cmd) + sizeof(SVGA3dCopyBox) * num_of_clip_rects;
+
+ cmd = kmalloc(fifo_size, GFP_KERNEL);
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("Failed to allocate memory for surface copy.\n");
+ ret = -ENOMEM;
+ goto out_free_update_area;
+ }
+
+ memset(cmd, 0, fifo_size);
+ cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
+
+ blits = (SVGA3dCopyBox *)&cmd[1];
+
+
+ /* Figure out the source bounding box */
+ src_bb.x1 = clip_rects->x;
+ src_bb.y1 = clip_rects->y;
+ src_bb.x2 = clip_rects->x + clip_rects->w;
+ src_bb.y2 = clip_rects->y + clip_rects->h;
+
+ for (i = 1; i < num_of_clip_rects; i++) {
+ src_bb.x1 = min_t(int, src_bb.x1, clip_rects[i].x);
+ src_bb.x2 = max_t(int, src_bb.x2,
+ clip_rects[i].x + (int) clip_rects[i].w);
+ src_bb.y1 = min_t(int, src_bb.y1, clip_rects[i].y);
+ src_bb.y2 = max_t(int, src_bb.y2,
+ clip_rects[i].y + (int) clip_rects[i].h);
+ }
+
+ for (i = 0; i < num_of_clip_rects; i++) {
+ update_area[i].x1 = clip_rects[i].x - src_bb.x1;
+ update_area[i].x2 = update_area[i].x1 + clip_rects[i].w;
+ update_area[i].y1 = clip_rects[i].y - src_bb.y1;
+ update_area[i].y2 = update_area[i].y1 + clip_rects[i].h;
+ }
+
+
+ for (cur_du = 0; cur_du < num_of_du; cur_du++) {
+ struct vmw_clip_rect dest_bb;
+ int num_of_blits;
+
+ crtc = &stdu[cur_du]->base.crtc;
+
+ dest_bb.x1 = src_bb.x1 + dest_x - crtc->x;
+ dest_bb.y1 = src_bb.y1 + dest_y - crtc->y;
+ dest_bb.x2 = src_bb.x2 + dest_x - crtc->x;
+ dest_bb.y2 = src_bb.y2 + dest_y - crtc->y;
+
+ /* Skip any STDU outside of the destination bounding box */
+ if (dest_bb.x1 >= crtc->mode.hdisplay ||
+ dest_bb.y1 >= crtc->mode.vdisplay ||
+ dest_bb.x2 <= 0 || dest_bb.y2 <= 0)
+ continue;
+
+ /* Normalize to top-left of src bounding box in dest coord */
+ dest_bb.x2 = crtc->mode.hdisplay - dest_bb.x1;
+ dest_bb.y2 = crtc->mode.vdisplay - dest_bb.y1;
+ dest_bb.x1 = 0 - dest_bb.x1;
+ dest_bb.y1 = 0 - dest_bb.y1;
+
+ for (i = 0, num_of_blits = 0; i < num_of_clip_rects; i++) {
+ int x1 = max_t(int, dest_bb.x1, (int)update_area[i].x1);
+ int y1 = max_t(int, dest_bb.y1, (int)update_area[i].y1);
+ int x2 = min_t(int, dest_bb.x2, (int)update_area[i].x2);
+ int y2 = min_t(int, dest_bb.y2, (int)update_area[i].y2);
+
+ if (x1 >= x2)
+ continue;
+
+ if (y1 >= y2)
+ continue;
+
+ blits[num_of_blits].srcx = src_bb.x1 + x1;
+ blits[num_of_blits].srcy = src_bb.y1 + y1;
+ blits[num_of_blits].x = -dest_bb.x1 + x1;
+ blits[num_of_blits].y = -dest_bb.y1 + y1;
+ blits[num_of_blits].d = 1;
+ blits[num_of_blits].w = x2 - x1;
+ blits[num_of_blits].h = y2 - y1;
+ num_of_blits++;
+ }
+
+ if (num_of_blits == 0)
+ continue;
+
+ /* Calculate new command size */
+ fifo_size = sizeof(*cmd) + sizeof(SVGA3dCopyBox) * num_of_blits;
+
+ cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
+
+ cmd->body.src.sid = user_handle;
+ cmd->body.dest.sid = stdu[cur_du]->display_srf->res.id;
+
+ ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
+ fifo_size, 0, VMW_QUIRK_SCREENTARGET,
+ NULL, NULL);
+
+ if (unlikely(ret != 0))
+ break;
+
+ for (i = 0; i < num_of_blits; i++) {
+ struct drm_clip_rect blit_area;
+
+ /*
+ * Add crtc offset because vmw_stdu_update_st expects
+ * desktop coordinates
+ */
+ blit_area.x1 = blits[i].x + crtc->x;
+ blit_area.x2 = blit_area.x1 + blits[i].w;
+ blit_area.y1 = blits[i].y + crtc->y;
+ blit_area.y2 = blit_area.y1 + blits[i].h;
+ (void) vmw_stdu_update_st(dev_priv, NULL, stdu[cur_du],
+ &blit_area);
+ }
+ }
+
+ kfree(cmd);
+
+out_free_update_area:
+ kfree(update_area);
+
+ return ret;
+}
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