anv: move common wsi code to x11/wayland common files.

Next task is to rename all the anv_ out of this,
and move to a common location

Reviewed-by: Jason Ekstrand <[email protected]>

1 files changed, 884 insertions, 0 deletions

diff --git a/src/intel/vulkan/wsi_common_x11.c b/src/intel/vulkan/wsi_common_x11.c
new file mode 100644
index 00000000000..b494740664e
--- /dev/null
+++ b/src/intel/vulkan/wsi_common_x11.c
@@ -0,0 +1,884 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 <X11/Xlib-xcb.h>
+#include <X11/xshmfence.h>
+#include <xcb/xcb.h>
+#include <xcb/dri3.h>
+#include <xcb/present.h>
+
+#include "util/hash_table.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include "wsi_common.h"
+#include "wsi_common_x11.h"
+
+#define typed_memcpy(dest, src, count) ({ \
+   static_assert(sizeof(*src) == sizeof(*dest), ""); \
+   memcpy((dest), (src), (count) * sizeof(*(src))); \
+})
+
+struct wsi_x11_connection {
+   bool has_dri3;
+   bool has_present;
+};
+
+struct wsi_x11 {
+   struct anv_wsi_interface base;
+
+   pthread_mutex_t                              mutex;
+   /* Hash table of xcb_connection -> wsi_x11_connection mappings */
+   struct hash_table *connections;
+};
+
+static struct wsi_x11_connection *
+wsi_x11_connection_create(const VkAllocationCallbacks *alloc,
+                          xcb_connection_t *conn)
+{
+   xcb_query_extension_cookie_t dri3_cookie, pres_cookie;
+   xcb_query_extension_reply_t *dri3_reply, *pres_reply;
+
+   struct wsi_x11_connection *wsi_conn =
+      vk_alloc(alloc, sizeof(*wsi_conn), 8,
+                VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
+   if (!wsi_conn)
+      return NULL;
+
+   dri3_cookie = xcb_query_extension(conn, 4, "DRI3");
+   pres_cookie = xcb_query_extension(conn, 7, "PRESENT");
+
+   dri3_reply = xcb_query_extension_reply(conn, dri3_cookie, NULL);
+   pres_reply = xcb_query_extension_reply(conn, pres_cookie, NULL);
+   if (dri3_reply == NULL || pres_reply == NULL) {
+      free(dri3_reply);
+      free(pres_reply);
+      vk_free(alloc, wsi_conn);
+      return NULL;
+   }
+
+   wsi_conn->has_dri3 = dri3_reply->present != 0;
+   wsi_conn->has_present = pres_reply->present != 0;
+
+   free(dri3_reply);
+   free(pres_reply);
+
+   return wsi_conn;
+}
+
+static void
+wsi_x11_connection_destroy(const VkAllocationCallbacks *alloc,
+                           struct wsi_x11_connection *conn)
+{
+   vk_free(alloc, conn);
+}
+
+static struct wsi_x11_connection *
+wsi_x11_get_connection(struct anv_wsi_device *wsi_dev,
+		       const VkAllocationCallbacks *alloc,
+                       xcb_connection_t *conn)
+{
+   struct wsi_x11 *wsi =
+      (struct wsi_x11 *)wsi_dev->wsi[VK_ICD_WSI_PLATFORM_XCB];
+
+   pthread_mutex_lock(&wsi->mutex);
+
+   struct hash_entry *entry = _mesa_hash_table_search(wsi->connections, conn);
+   if (!entry) {
+      /* We're about to make a bunch of blocking calls.  Let's drop the
+       * mutex for now so we don't block up too badly.
+       */
+      pthread_mutex_unlock(&wsi->mutex);
+
+      struct wsi_x11_connection *wsi_conn =
+         wsi_x11_connection_create(alloc, conn);
+
+      pthread_mutex_lock(&wsi->mutex);
+
+      entry = _mesa_hash_table_search(wsi->connections, conn);
+      if (entry) {
+         /* Oops, someone raced us to it */
+         wsi_x11_connection_destroy(alloc, wsi_conn);
+      } else {
+         entry = _mesa_hash_table_insert(wsi->connections, conn, wsi_conn);
+      }
+   }
+
+   pthread_mutex_unlock(&wsi->mutex);
+
+   return entry->data;
+}
+
+static const VkSurfaceFormatKHR formats[] = {
+   { .format = VK_FORMAT_B8G8R8A8_SRGB, },
+   { .format = VK_FORMAT_B8G8R8A8_UNORM, },
+};
+
+static const VkPresentModeKHR present_modes[] = {
+   VK_PRESENT_MODE_MAILBOX_KHR,
+};
+
+static xcb_screen_t *
+get_screen_for_root(xcb_connection_t *conn, xcb_window_t root)
+{
+   xcb_screen_iterator_t screen_iter =
+      xcb_setup_roots_iterator(xcb_get_setup(conn));
+
+   for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
+      if (screen_iter.data->root == root)
+         return screen_iter.data;
+   }
+
+   return NULL;
+}
+
+static xcb_visualtype_t *
+screen_get_visualtype(xcb_screen_t *screen, xcb_visualid_t visual_id,
+                      unsigned *depth)
+{
+   xcb_depth_iterator_t depth_iter =
+      xcb_screen_allowed_depths_iterator(screen);
+
+   for (; depth_iter.rem; xcb_depth_next (&depth_iter)) {
+      xcb_visualtype_iterator_t visual_iter =
+         xcb_depth_visuals_iterator (depth_iter.data);
+
+      for (; visual_iter.rem; xcb_visualtype_next (&visual_iter)) {
+         if (visual_iter.data->visual_id == visual_id) {
+            if (depth)
+               *depth = depth_iter.data->depth;
+            return visual_iter.data;
+         }
+      }
+   }
+
+   return NULL;
+}
+
+static xcb_visualtype_t *
+connection_get_visualtype(xcb_connection_t *conn, xcb_visualid_t visual_id,
+                          unsigned *depth)
+{
+   xcb_screen_iterator_t screen_iter =
+      xcb_setup_roots_iterator(xcb_get_setup(conn));
+
+   /* For this we have to iterate over all of the screens which is rather
+    * annoying.  Fortunately, there is probably only 1.
+    */
+   for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
+      xcb_visualtype_t *visual = screen_get_visualtype(screen_iter.data,
+                                                       visual_id, depth);
+      if (visual)
+         return visual;
+   }
+
+   return NULL;
+}
+
+static xcb_visualtype_t *
+get_visualtype_for_window(xcb_connection_t *conn, xcb_window_t window,
+                          unsigned *depth)
+{
+   xcb_query_tree_cookie_t tree_cookie;
+   xcb_get_window_attributes_cookie_t attrib_cookie;
+   xcb_query_tree_reply_t *tree;
+   xcb_get_window_attributes_reply_t *attrib;
+
+   tree_cookie = xcb_query_tree(conn, window);
+   attrib_cookie = xcb_get_window_attributes(conn, window);
+
+   tree = xcb_query_tree_reply(conn, tree_cookie, NULL);
+   attrib = xcb_get_window_attributes_reply(conn, attrib_cookie, NULL);
+   if (attrib == NULL || tree == NULL) {
+      free(attrib);
+      free(tree);
+      return NULL;
+   }
+
+   xcb_window_t root = tree->root;
+   xcb_visualid_t visual_id = attrib->visual;
+   free(attrib);
+   free(tree);
+
+   xcb_screen_t *screen = get_screen_for_root(conn, root);
+   if (screen == NULL)
+      return NULL;
+
+   return screen_get_visualtype(screen, visual_id, depth);
+}
+
+static bool
+visual_has_alpha(xcb_visualtype_t *visual, unsigned depth)
+{
+   uint32_t rgb_mask = visual->red_mask |
+                       visual->green_mask |
+                       visual->blue_mask;
+
+   uint32_t all_mask = 0xffffffff >> (32 - depth);
+
+   /* Do we have bits left over after RGB? */
+   return (all_mask & ~rgb_mask) != 0;
+}
+
+VkBool32 anv_get_physical_device_xcb_presentation_support(
+    struct anv_wsi_device *wsi_device,
+    VkAllocationCallbacks *alloc,
+    uint32_t                                    queueFamilyIndex,
+    xcb_connection_t*                           connection,
+    xcb_visualid_t                              visual_id)
+{
+   struct wsi_x11_connection *wsi_conn =
+      wsi_x11_get_connection(wsi_device, alloc, connection);
+
+   if (!wsi_conn->has_dri3) {
+      fprintf(stderr, "vulkan: No DRI3 support\n");
+      return false;
+   }
+
+   unsigned visual_depth;
+   if (!connection_get_visualtype(connection, visual_id, &visual_depth))
+      return false;
+
+   if (visual_depth != 24 && visual_depth != 32)
+      return false;
+
+   return true;
+}
+
+static xcb_connection_t*
+x11_surface_get_connection(VkIcdSurfaceBase *icd_surface)
+{
+   if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
+      return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy);
+   else
+      return ((VkIcdSurfaceXcb *)icd_surface)->connection;
+}
+
+static xcb_window_t
+x11_surface_get_window(VkIcdSurfaceBase *icd_surface)
+{
+   if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
+      return ((VkIcdSurfaceXlib *)icd_surface)->window;
+   else
+      return ((VkIcdSurfaceXcb *)icd_surface)->window;
+}
+
+static VkResult
+x11_surface_get_support(VkIcdSurfaceBase *icd_surface,
+                        struct anv_wsi_device *wsi_device,
+                        const VkAllocationCallbacks *alloc,
+                        uint32_t queueFamilyIndex,
+                        VkBool32* pSupported)
+{
+   xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
+   xcb_window_t window = x11_surface_get_window(icd_surface);
+
+   struct wsi_x11_connection *wsi_conn =
+      wsi_x11_get_connection(wsi_device, alloc, conn);
+   if (!wsi_conn)
+      return VK_ERROR_OUT_OF_HOST_MEMORY;
+
+   if (!wsi_conn->has_dri3) {
+      fprintf(stderr, "vulkan: No DRI3 support\n");
+      *pSupported = false;
+      return VK_SUCCESS;
+   }
+
+   unsigned visual_depth;
+   if (!get_visualtype_for_window(conn, window, &visual_depth)) {
+      *pSupported = false;
+      return VK_SUCCESS;
+   }
+
+   if (visual_depth != 24 && visual_depth != 32) {
+      *pSupported = false;
+      return VK_SUCCESS;
+   }
+
+   *pSupported = true;
+   return VK_SUCCESS;
+}
+
+static VkResult
+x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
+                             VkSurfaceCapabilitiesKHR *caps)
+{
+   xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
+   xcb_window_t window = x11_surface_get_window(icd_surface);
+   xcb_get_geometry_cookie_t geom_cookie;
+   xcb_generic_error_t *err;
+   xcb_get_geometry_reply_t *geom;
+   unsigned visual_depth;
+
+   geom_cookie = xcb_get_geometry(conn, window);
+
+   /* This does a round-trip.  This is why we do get_geometry first and
+    * wait to read the reply until after we have a visual.
+    */
+   xcb_visualtype_t *visual =
+      get_visualtype_for_window(conn, window, &visual_depth);
+
+   geom = xcb_get_geometry_reply(conn, geom_cookie, &err);
+   if (geom) {
+      VkExtent2D extent = { geom->width, geom->height };
+      caps->currentExtent = extent;
+      caps->minImageExtent = extent;
+      caps->maxImageExtent = extent;
+   } else {
+      /* This can happen if the client didn't wait for the configure event
+       * to come back from the compositor.  In that case, we don't know the
+       * size of the window so we just return valid "I don't know" stuff.
+       */
+      caps->currentExtent = (VkExtent2D) { -1, -1 };
+      caps->minImageExtent = (VkExtent2D) { 1, 1 };
+      caps->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX };
+   }
+   free(err);
+   free(geom);
+
+   if (visual_has_alpha(visual, visual_depth)) {
+      caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
+                                      VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
+   } else {
+      caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
+                                      VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
+   }
+
+   caps->minImageCount = 2;
+   caps->maxImageCount = 4;
+   caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
+   caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
+   caps->maxImageArrayLayers = 1;
+   caps->supportedUsageFlags =
+      VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
+      VK_IMAGE_USAGE_SAMPLED_BIT |
+      VK_IMAGE_USAGE_TRANSFER_DST_BIT |
+      VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
+
+   return VK_SUCCESS;
+}
+
+static VkResult
+x11_surface_get_formats(VkIcdSurfaceBase *surface,
+                        struct anv_wsi_device *wsi_device,
+                        uint32_t *pSurfaceFormatCount,
+                        VkSurfaceFormatKHR *pSurfaceFormats)
+{
+   if (pSurfaceFormats == NULL) {
+      *pSurfaceFormatCount = ARRAY_SIZE(formats);
+      return VK_SUCCESS;
+   }
+
+   assert(*pSurfaceFormatCount >= ARRAY_SIZE(formats));
+   typed_memcpy(pSurfaceFormats, formats, *pSurfaceFormatCount);
+   *pSurfaceFormatCount = ARRAY_SIZE(formats);
+
+   return VK_SUCCESS;
+}
+
+static VkResult
+x11_surface_get_present_modes(VkIcdSurfaceBase *surface,
+                              uint32_t *pPresentModeCount,
+                              VkPresentModeKHR *pPresentModes)
+{
+   if (pPresentModes == NULL) {
+      *pPresentModeCount = ARRAY_SIZE(present_modes);
+      return VK_SUCCESS;
+   }
+
+   assert(*pPresentModeCount >= ARRAY_SIZE(present_modes));
+   typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
+   *pPresentModeCount = ARRAY_SIZE(present_modes);
+
+   return VK_SUCCESS;
+}
+
+VkResult anv_create_xcb_surface(const VkAllocationCallbacks *pAllocator,
+				const VkXcbSurfaceCreateInfoKHR *pCreateInfo,
+				VkSurfaceKHR *pSurface)
+{
+   VkIcdSurfaceXcb *surface;
+
+   surface = vk_alloc(pAllocator, sizeof *surface, 8,
+                      VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
+   if (surface == NULL)
+      return VK_ERROR_OUT_OF_HOST_MEMORY;
+
+   surface->base.platform = VK_ICD_WSI_PLATFORM_XCB;
+   surface->connection = pCreateInfo->connection;
+   surface->window = pCreateInfo->window;
+
+   *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
+   return VK_SUCCESS;
+}
+
+VkResult anv_create_xlib_surface(const VkAllocationCallbacks *pAllocator,
+				 const VkXlibSurfaceCreateInfoKHR *pCreateInfo,
+				 VkSurfaceKHR *pSurface)
+{
+   VkIcdSurfaceXlib *surface;
+
+   surface = vk_alloc(pAllocator, sizeof *surface, 8,
+                      VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
+   if (surface == NULL)
+      return VK_ERROR_OUT_OF_HOST_MEMORY;
+
+   surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB;
+   surface->dpy = pCreateInfo->dpy;
+   surface->window = pCreateInfo->window;
+
+   *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
+   return VK_SUCCESS;
+}
+
+struct x11_image {
+   VkImage image;
+   VkDeviceMemory memory;
+   xcb_pixmap_t                              pixmap;
+   bool                                      busy;
+   struct xshmfence *                        shm_fence;
+   uint32_t                                  sync_fence;
+};
+
+struct x11_swapchain {
+   struct anv_swapchain                        base;
+
+   xcb_connection_t *                           conn;
+   xcb_window_t                                 window;
+   xcb_gc_t                                     gc;
+   VkExtent2D                                   extent;
+   uint32_t                                     image_count;
+
+   xcb_present_event_t                          event_id;
+   xcb_special_event_t *                        special_event;
+   uint64_t                                     send_sbc;
+   uint32_t                                     stamp;
+
+   struct x11_image                             images[0];
+};
+
+static VkResult
+x11_get_images(struct anv_swapchain *anv_chain,
+               uint32_t* pCount, VkImage *pSwapchainImages)
+{
+   struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
+
+   if (pSwapchainImages == NULL) {
+      *pCount = chain->image_count;
+      return VK_SUCCESS;
+   }
+
+   assert(chain->image_count <= *pCount);
+   for (uint32_t i = 0; i < chain->image_count; i++)
+      pSwapchainImages[i] = chain->images[i].image;
+
+   *pCount = chain->image_count;
+
+   return VK_SUCCESS;
+}
+
+static VkResult
+x11_handle_dri3_present_event(struct x11_swapchain *chain,
+                              xcb_present_generic_event_t *event)
+{
+   switch (event->evtype) {
+   case XCB_PRESENT_CONFIGURE_NOTIFY: {
+      xcb_present_configure_notify_event_t *config = (void *) event;
+
+      if (config->width != chain->extent.width ||
+          config->height != chain->extent.height)
+         return VK_ERROR_OUT_OF_DATE_KHR;
+
+      break;
+   }
+
+   case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
+      xcb_present_idle_notify_event_t *idle = (void *) event;
+
+      for (unsigned i = 0; i < chain->image_count; i++) {
+         if (chain->images[i].pixmap == idle->pixmap) {
+            chain->images[i].busy = false;
+            break;
+         }
+      }
+
+      break;
+   }
+
+   case XCB_PRESENT_COMPLETE_NOTIFY:
+   default:
+      break;
+   }
+
+   return VK_SUCCESS;
+}
+
+static VkResult
+x11_acquire_next_image(struct anv_swapchain *anv_chain,
+                       uint64_t timeout,
+                       VkSemaphore semaphore,
+                       uint32_t *image_index)
+{
+   struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
+
+   while (1) {
+      for (uint32_t i = 0; i < chain->image_count; i++) {
+         if (!chain->images[i].busy) {
+            /* We found a non-busy image */
+            xshmfence_await(chain->images[i].shm_fence);
+            *image_index = i;
+            chain->images[i].busy = true;
+            return VK_SUCCESS;
+         }
+      }
+
+      xcb_flush(chain->conn);
+      xcb_generic_event_t *event =
+         xcb_wait_for_special_event(chain->conn, chain->special_event);
+      if (!event)
+         return VK_ERROR_OUT_OF_DATE_KHR;
+
+      VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
+      free(event);
+      if (result != VK_SUCCESS)
+         return result;
+   }
+}
+
+static VkResult
+x11_queue_present(struct anv_swapchain *anv_chain,
+                  uint32_t image_index)
+{
+   struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
+   struct x11_image *image = &chain->images[image_index];
+
+   assert(image_index < chain->image_count);
+
+   uint32_t options = XCB_PRESENT_OPTION_NONE;
+
+   int64_t target_msc = 0;
+   int64_t divisor = 0;
+   int64_t remainder = 0;
+
+   options |= XCB_PRESENT_OPTION_ASYNC;
+
+   xshmfence_reset(image->shm_fence);
+
+   ++chain->send_sbc;
+   xcb_void_cookie_t cookie =
+      xcb_present_pixmap(chain->conn,
+                         chain->window,
+                         image->pixmap,
+                         (uint32_t) chain->send_sbc,
+                         0,                                    /* valid */
+                         0,                                    /* update */
+                         0,                                    /* x_off */
+                         0,                                    /* y_off */
+                         XCB_NONE,                             /* target_crtc */
+                         XCB_NONE,
+                         image->sync_fence,
+                         options,
+                         target_msc,
+                         divisor,
+                         remainder, 0, NULL);
+   xcb_discard_reply(chain->conn, cookie.sequence);
+   image->busy = true;
+
+   xcb_flush(chain->conn);
+
+   return VK_SUCCESS;
+}
+
+static VkResult
+x11_image_init(VkDevice device_h, struct x11_swapchain *chain,
+               const VkSwapchainCreateInfoKHR *pCreateInfo,
+               const VkAllocationCallbacks* pAllocator,
+               struct x11_image *image)
+{
+   xcb_void_cookie_t cookie;
+   VkResult result;
+   uint32_t row_pitch;
+   uint32_t offset;
+   uint32_t bpp = 32;
+   uint32_t depth = 24;
+   int fd;
+   uint32_t size;
+
+   result = chain->base.image_fns->create_wsi_image(device_h,
+                                                    pCreateInfo,
+                                                    pAllocator,
+                                                    &image->image,
+                                                    &image->memory,
+                                                    &size,
+                                                    &offset,
+                                                    &row_pitch,
+                                                    &fd);
+   if (result != VK_SUCCESS)
+      return result;
+
+   image->pixmap = xcb_generate_id(chain->conn);
+
+   cookie =
+      xcb_dri3_pixmap_from_buffer_checked(chain->conn,
+                                          image->pixmap,
+                                          chain->window,
+                                          size,
+                                          pCreateInfo->imageExtent.width,
+                                          pCreateInfo->imageExtent.height,
+                                          row_pitch,
+                                          depth, bpp, fd);
+   xcb_discard_reply(chain->conn, cookie.sequence);
+
+   int fence_fd = xshmfence_alloc_shm();
+   if (fence_fd < 0)
+      goto fail_pixmap;
+
+   image->shm_fence = xshmfence_map_shm(fence_fd);
+   if (image->shm_fence == NULL)
+      goto fail_shmfence_alloc;
+
+   image->sync_fence = xcb_generate_id(chain->conn);
+   xcb_dri3_fence_from_fd(chain->conn,
+                          image->pixmap,
+                          image->sync_fence,
+                          false,
+                          fence_fd);
+
+   image->busy = false;
+   xshmfence_trigger(image->shm_fence);
+
+   return VK_SUCCESS;
+
+fail_shmfence_alloc:
+   close(fence_fd);
+
+fail_pixmap:
+   cookie = xcb_free_pixmap(chain->conn, image->pixmap);
+   xcb_discard_reply(chain->conn, cookie.sequence);
+
+   chain->base.image_fns->free_wsi_image(device_h, pAllocator,
+                                        image->image, image->memory);
+
+   return result;
+}
+
+static void
+x11_image_finish(struct x11_swapchain *chain,
+                 const VkAllocationCallbacks* pAllocator,
+                 struct x11_image *image)
+{
+   xcb_void_cookie_t cookie;
+
+   cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence);
+   xcb_discard_reply(chain->conn, cookie.sequence);
+   xshmfence_unmap_shm(image->shm_fence);
+
+   cookie = xcb_free_pixmap(chain->conn, image->pixmap);
+   xcb_discard_reply(chain->conn, cookie.sequence);
+
+   chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
+                                        image->image, image->memory);
+}
+
+static VkResult
+x11_swapchain_destroy(struct anv_swapchain *anv_chain,
+                      const VkAllocationCallbacks *pAllocator)
+{
+   struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
+   for (uint32_t i = 0; i < chain->image_count; i++)
+      x11_image_finish(chain, pAllocator, &chain->images[i]);
+
+   xcb_unregister_for_special_event(chain->conn, chain->special_event);
+
+   vk_free(pAllocator, chain);
+
+   return VK_SUCCESS;
+}
+
+static VkResult
+x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
+                             VkDevice device,
+                             struct anv_wsi_device *wsi_device,
+                             const VkSwapchainCreateInfoKHR *pCreateInfo,
+                             const VkAllocationCallbacks* pAllocator,
+                             const struct anv_wsi_image_fns *image_fns,
+                             struct anv_swapchain **swapchain_out)
+{
+   struct x11_swapchain *chain;
+   xcb_void_cookie_t cookie;
+   VkResult result;
+
+   assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
+
+   int num_images = pCreateInfo->minImageCount;
+
+   /* For true mailbox mode, we need at least 4 images:
+    *  1) One to scan out from
+    *  2) One to have queued for scan-out
+    *  3) One to be currently held by the Wayland compositor
+    *  4) One to render to
+    */
+   if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
+      num_images = MAX2(num_images, 4);
+
+   size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
+   chain = vk_alloc(pAllocator, size, 8,
+                      VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
+   if (chain == NULL)
+      return VK_ERROR_OUT_OF_HOST_MEMORY;
+
+   chain->base.device = device;
+   chain->base.destroy = x11_swapchain_destroy;
+   chain->base.get_images = x11_get_images;
+   chain->base.acquire_next_image = x11_acquire_next_image;
+   chain->base.queue_present = x11_queue_present;
+   chain->base.image_fns = image_fns;
+   chain->conn = x11_surface_get_connection(icd_surface);
+   chain->window = x11_surface_get_window(icd_surface);
+   chain->extent = pCreateInfo->imageExtent;
+   chain->image_count = num_images;
+   chain->send_sbc = 0;
+
+   chain->event_id = xcb_generate_id(chain->conn);
+   xcb_present_select_input(chain->conn, chain->event_id, chain->window,
+                            XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
+                            XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
+                            XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
+
+   /* Create an XCB event queue to hold present events outside of the usual
+    * application event queue
+    */
+   chain->special_event =
+      xcb_register_for_special_xge(chain->conn, &xcb_present_id,
+                                   chain->event_id, NULL);
+
+   chain->gc = xcb_generate_id(chain->conn);
+   if (!chain->gc) {
+      /* FINISHME: Choose a better error. */
+      result = VK_ERROR_OUT_OF_HOST_MEMORY;
+      goto fail_register;
+   }
+
+   cookie = xcb_create_gc(chain->conn,
+                          chain->gc,
+                          chain->window,
+                          XCB_GC_GRAPHICS_EXPOSURES,
+                          (uint32_t []) { 0 });
+   xcb_discard_reply(chain->conn, cookie.sequence);
+
+   uint32_t image = 0;
+   for (; image < chain->image_count; image++) {
+      result = x11_image_init(device, chain, pCreateInfo, pAllocator,
+                              &chain->images[image]);
+      if (result != VK_SUCCESS)
+         goto fail_init_images;
+   }
+
+   *swapchain_out = &chain->base;
+
+   return VK_SUCCESS;
+
+fail_init_images:
+   for (uint32_t j = 0; j < image; j++)
+      x11_image_finish(chain, pAllocator, &chain->images[j]);
+
+fail_register:
+   xcb_unregister_for_special_event(chain->conn, chain->special_event);
+
+   vk_free(pAllocator, chain);
+
+   return result;
+}
+
+VkResult
+anv_x11_init_wsi(struct anv_wsi_device *wsi_device,
+                 const VkAllocationCallbacks *alloc)
+{
+   struct wsi_x11 *wsi;
+   VkResult result;
+
+   wsi = vk_alloc(alloc, sizeof(*wsi), 8,
+                   VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
+   if (!wsi) {
+      result = VK_ERROR_OUT_OF_HOST_MEMORY;
+      goto fail;
+   }
+
+   int ret = pthread_mutex_init(&wsi->mutex, NULL);
+   if (ret != 0) {
+      if (ret == ENOMEM) {
+         result = VK_ERROR_OUT_OF_HOST_MEMORY;
+      } else {
+         /* FINISHME: Choose a better error. */
+         result = VK_ERROR_OUT_OF_HOST_MEMORY;
+      }
+
+      goto fail_alloc;
+   }
+
+   wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
+                                              _mesa_key_pointer_equal);
+   if (!wsi->connections) {
+      result = VK_ERROR_OUT_OF_HOST_MEMORY;
+      goto fail_mutex;
+   }
+
+   wsi->base.get_support = x11_surface_get_support;
+   wsi->base.get_capabilities = x11_surface_get_capabilities;
+   wsi->base.get_formats = x11_surface_get_formats;
+   wsi->base.get_present_modes = x11_surface_get_present_modes;
+   wsi->base.create_swapchain = x11_surface_create_swapchain;
+
+   wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base;
+   wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base;
+
+   return VK_SUCCESS;
+
+fail_mutex:
+   pthread_mutex_destroy(&wsi->mutex);
+fail_alloc:
+   vk_free(alloc, wsi);
+fail:
+   wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL;
+   wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL;
+
+   return result;
+}
+
+void
+anv_x11_finish_wsi(struct anv_wsi_device *wsi_device,
+                   const VkAllocationCallbacks *alloc)
+{
+   struct wsi_x11 *wsi =
+      (struct wsi_x11 *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB];
+
+   if (wsi) {
+      _mesa_hash_table_destroy(wsi->connections, NULL);
+
+      pthread_mutex_destroy(&wsi->mutex);
+
+      vk_free(alloc, wsi);
+   }
+}