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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c1266
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 000000000000..c22e2df1b336
--- /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;
+}