1 files changed, 526 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/dri/drm/dri1.c b/src/gallium/state_trackers/dri/drm/dri1.c
new file mode 100644
index 0000000000..98bdb2936a
--- /dev/null
+++ b/src/gallium/state_trackers/dri/drm/dri1.c
@@ -0,0 +1,526 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * 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 VMWARE 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.
+ *
+ **************************************************************************/
+/*
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+/* XXX DRI1 is untested after the switch to st_api.h */
+
+#include "util/u_memory.h"
+#include "util/u_rect.h"
+#include "util/u_inlines.h"
+#include "pipe/p_context.h"
+#include "state_tracker/dri1_api.h"
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_drawable.h"
+#include "dri_st_api.h"
+#include "dri1_helper.h"
+#include "dri1.h"
+
+static INLINE void
+dri1_lock(struct dri_context *ctx)
+{
+   drm_context_t hw_context = ctx->cPriv->hHWContext;
+   char ret = 0;
+
+   DRM_CAS(ctx->lock, hw_context, DRM_LOCK_HELD | hw_context, ret);
+   if (ret) {
+      drmGetLock(ctx->sPriv->fd, hw_context, 0);
+      ctx->stLostLock = TRUE;
+      ctx->wsLostLock = TRUE;
+   }
+   ctx->isLocked = TRUE;
+}
+
+static INLINE void
+dri1_unlock(struct dri_context *ctx)
+{
+   ctx->isLocked = FALSE;
+   DRM_UNLOCK(ctx->sPriv->fd, ctx->lock, ctx->cPriv->hHWContext);
+}
+
+static void
+dri1_update_drawables_locked(struct dri_context *ctx,
+			     __DRIdrawable * driDrawPriv,
+			     __DRIdrawable * driReadPriv)
+{
+   if (ctx->stLostLock) {
+      ctx->stLostLock = FALSE;
+      if (driDrawPriv == driReadPriv)
+	 DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
+      else
+	 DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
+					 driReadPriv);
+   }
+}
+
+/**
+ * This ensures all contexts which bind to a drawable pick up the
+ * drawable change and signal new buffer state.
+ */
+static void
+dri1_propagate_drawable_change(struct dri_context *ctx)
+{
+   __DRIdrawable *dPriv = ctx->dPriv;
+   __DRIdrawable *rPriv = ctx->rPriv;
+   struct dri_drawable *draw = dri_drawable(dPriv);
+   struct dri_drawable *read = dri_drawable(rPriv);
+   boolean flushed = FALSE;
+
+   if (dPriv && draw->texture_stamp != dPriv->lastStamp) {
+      ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+      flushed = TRUE;
+      ctx->st->notify_invalid_framebuffer(ctx->st, draw->stfb);
+   }
+
+   if (rPriv && dPriv != rPriv && read->texture_stamp != rPriv->lastStamp) {
+      if (!flushed)
+	 ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+      ctx->st->notify_invalid_framebuffer(ctx->st, read->stfb);
+   }
+}
+
+static INLINE boolean
+dri1_intersect_src_bbox(struct drm_clip_rect *dst,
+			int dst_x,
+			int dst_y,
+			const struct drm_clip_rect *src,
+			const struct drm_clip_rect *bbox)
+{
+   int xy1;
+   int xy2;
+
+   xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
+      (int)bbox->x1 + dst_x;
+   xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
+      (int)bbox->x2 + dst_x;
+   if (xy1 >= xy2 || xy1 < 0)
+      return FALSE;
+
+   dst->x1 = xy1;
+   dst->x2 = xy2;
+
+   xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
+      (int)bbox->y1 + dst_y;
+   xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
+      (int)bbox->y2 + dst_y;
+   if (xy1 >= xy2 || xy1 < 0)
+      return FALSE;
+
+   dst->y1 = xy1;
+   dst->y2 = xy2;
+   return TRUE;
+}
+
+static void
+dri1_swap_copy(struct pipe_context *pipe,
+	       struct pipe_surface *dst,
+	       struct pipe_surface *src,
+	       __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
+{
+   struct drm_clip_rect clip;
+   struct drm_clip_rect *cur;
+   int i;
+
+   cur = dPriv->pClipRects;
+
+   for (i = 0; i < dPriv->numClipRects; ++i) {
+      if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
+         if (pipe->surface_copy) {
+            pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
+                               src,
+                               (int)clip.x1 - dPriv->x,
+                               (int)clip.y1 - dPriv->y,
+                               clip.x2 - clip.x1, clip.y2 - clip.y1);
+         } else {
+            util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
+                              src,
+                              (int)clip.x1 - dPriv->x,
+                              (int)clip.y1 - dPriv->y,
+                              clip.x2 - clip.x1, clip.y2 - clip.y1);
+         }
+      }
+   }
+}
+
+static void
+dri1_present_texture_locked(__DRIdrawable * dPriv,
+                            struct pipe_texture *ptex,
+                            const struct drm_clip_rect *sub_box,
+                            struct pipe_fence_handle **fence)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct dri_screen *screen = dri_screen(drawable->sPriv);
+   struct pipe_context *pipe;
+   struct pipe_surface *psurf;
+   struct drm_clip_rect bbox;
+   boolean visible = TRUE;
+
+   *fence = NULL;
+
+   bbox.x1 = 0;
+   bbox.x2 = ptex->width0;
+   bbox.y1 = 0;
+   bbox.y2 = ptex->height0;
+
+   if (sub_box)
+      visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
+   if (!visible)
+      return;
+
+   pipe = dri1_get_pipe_context(screen);
+   psurf = dri1_get_pipe_surface(drawable, ptex);
+   if (!pipe || !psurf)
+      return;
+
+   if (__dri1_api_hooks->present_locked) {
+      __dri1_api_hooks->present_locked(pipe, psurf,
+                                       dPriv->pClipRects, dPriv->numClipRects,
+                                       dPriv->x, dPriv->y, &bbox, fence);
+   } else if (__dri1_api_hooks->front_srf_locked) {
+      struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
+
+      if (front)
+         dri1_swap_copy(pipe, front, psurf, dPriv, &bbox);
+
+      pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, fence);
+   }
+}
+
+static void
+dri1_copy_to_front(struct dri_context *ctx,
+		   struct pipe_texture *ptex,
+		   __DRIdrawable * dPriv,
+		   const struct drm_clip_rect *sub_box,
+		   struct pipe_fence_handle **fence)
+{
+   boolean save_lost_lock;
+
+   dri1_lock(ctx);
+   save_lost_lock = ctx->stLostLock;
+   dri1_update_drawables_locked(ctx, dPriv, dPriv);
+
+   dri1_present_texture_locked(dPriv, ptex, sub_box, fence);
+
+   ctx->stLostLock = save_lost_lock;
+
+   /**
+    * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
+    */
+
+   if (!sub_box)
+      dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
+
+   dri1_unlock(ctx);
+   dri1_propagate_drawable_change(ctx);
+}
+
+/*
+ * Backend functions for st_framebuffer interface and swap_buffers.
+ */
+
+void
+dri1_flush_frontbuffer(struct dri_drawable *draw,
+                       enum st_attachment_type statt)
+{
+   struct dri_context *ctx = dri_get_current();
+   struct dri_screen *screen = dri_screen(draw->sPriv);
+   struct pipe_screen *pipe_screen = screen->pipe_screen;
+   struct pipe_fence_handle *dummy_fence;
+   struct pipe_texture *ptex;
+
+   if (!ctx)
+      return;			       /* For now */
+
+   ptex = draw->textures[statt];
+   if (ptex) {
+      dri1_copy_to_front(ctx, ptex, ctx->dPriv, NULL, &dummy_fence);
+      pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
+   }
+
+   /**
+    * FIXME: Do we need swap throttling here?
+    */
+}
+
+void
+dri1_swap_buffers(__DRIdrawable * dPriv)
+{
+   struct dri_context *ctx = dri_get_current();
+   struct dri_drawable *draw = dri_drawable(dPriv);
+   struct dri_screen *screen = dri_screen(draw->sPriv);
+   struct pipe_screen *pipe_screen = screen->pipe_screen;
+   struct pipe_fence_handle *fence;
+   struct pipe_texture *ptex;
+
+   assert(__dri1_api_hooks != NULL);
+
+   if (!ctx)
+      return;			       /* For now */
+
+   ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
+   if (ptex) {
+      ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+      fence = dri1_swap_fences_pop_front(draw);
+      if (fence) {
+	 (void)pipe_screen->fence_finish(pipe_screen, fence, 0);
+	 pipe_screen->fence_reference(pipe_screen, &fence, NULL);
+      }
+      dri1_copy_to_front(ctx, ptex, dPriv, NULL, &fence);
+      dri1_swap_fences_push_back(draw, fence);
+      pipe_screen->fence_reference(pipe_screen, &fence, NULL);
+   }
+}
+
+void
+dri1_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
+{
+   struct dri_context *ctx = dri_get_current();
+   struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
+   struct pipe_screen *pipe_screen = screen->pipe_screen;
+   struct drm_clip_rect sub_bbox;
+   struct dri_drawable *draw = dri_drawable(dPriv);
+   struct pipe_fence_handle *dummy_fence;
+   struct pipe_texture *ptex;
+
+   assert(__dri1_api_hooks != NULL);
+
+   if (!ctx)
+      return;
+
+   sub_bbox.x1 = x;
+   sub_bbox.x2 = x + w;
+   sub_bbox.y1 = y;
+   sub_bbox.y2 = y + h;
+
+   ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
+   if (ptex) {
+      ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+      dri1_copy_to_front(ctx, ptex, dPriv, &sub_bbox, &dummy_fence);
+      pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
+   }
+}
+
+/**
+ * Allocate framebuffer attachments.
+ *
+ * During fixed-size operation, the function keeps allocating new attachments
+ * as they are requested. Unused attachments are not removed, not until the
+ * framebuffer is resized or destroyed.
+ */
+void
+dri1_allocate_textures(struct dri_drawable *drawable,
+                       unsigned mask)
+{
+   struct dri_screen *screen = dri_screen(drawable->sPriv);
+   struct pipe_texture templ;
+   unsigned width, height;
+   boolean resized;
+   int i;
+
+   width  = drawable->dPriv->w;
+   height = drawable->dPriv->h;
+
+   resized = (drawable->old_w != width ||
+              drawable->old_h != height);
+
+   /* remove outdated textures */
+   if (resized) {
+      for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
+         pipe_texture_reference(&drawable->textures[i], NULL);
+   }
+
+   memset(&templ, 0, sizeof(templ));
+   templ.target = PIPE_TEXTURE_2D;
+   templ.width0 = width;
+   templ.height0 = height;
+   templ.depth0 = 1;
+   templ.last_level = 0;
+
+   for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+      enum pipe_format format;
+      unsigned tex_usage;
+
+      /* the texture already exists or not requested */
+      if (drawable->textures[i] || !(mask & (1 << i))) {
+         continue;
+      }
+
+      switch (i) {
+      case ST_ATTACHMENT_FRONT_LEFT:
+      case ST_ATTACHMENT_BACK_LEFT:
+      case ST_ATTACHMENT_FRONT_RIGHT:
+      case ST_ATTACHMENT_BACK_RIGHT:
+         format = drawable->stvis.color_format;
+         tex_usage = PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
+                     PIPE_TEXTURE_USAGE_RENDER_TARGET;
+         break;
+      case ST_ATTACHMENT_DEPTH_STENCIL:
+         format = drawable->stvis.depth_stencil_format;
+         tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
+         break;
+      default:
+         format = PIPE_FORMAT_NONE;
+         break;
+      }
+
+      if (format != PIPE_FORMAT_NONE) {
+         templ.format = format;
+         templ.tex_usage = tex_usage;
+
+         drawable->textures[i] =
+            screen->pipe_screen->texture_create(screen->pipe_screen, &templ);
+      }
+   }
+
+   drawable->old_w = width;
+   drawable->old_h = height;
+}
+
+static void
+st_dri_lock(struct pipe_context *pipe)
+{
+   dri1_lock((struct dri_context *)pipe->priv);
+}
+
+static void
+st_dri_unlock(struct pipe_context *pipe)
+{
+   dri1_unlock((struct dri_context *)pipe->priv);
+}
+
+static boolean
+st_dri_is_locked(struct pipe_context *pipe)
+{
+   return ((struct dri_context *)pipe->priv)->isLocked;
+}
+
+static boolean
+st_dri_lost_lock(struct pipe_context *pipe)
+{
+   return ((struct dri_context *)pipe->priv)->wsLostLock;
+}
+
+static void
+st_dri_clear_lost_lock(struct pipe_context *pipe)
+{
+   ((struct dri_context *)pipe->priv)->wsLostLock = FALSE;
+}
+
+static struct dri1_api_lock_funcs dri1_lf = {
+   .lock = st_dri_lock,
+   .unlock = st_dri_unlock,
+   .is_locked = st_dri_is_locked,
+   .is_lock_lost = st_dri_lost_lock,
+   .clear_lost_lock = st_dri_clear_lost_lock
+};
+
+/*
+ * Backend function for init_screen.
+ */
+
+static const __DRIextension *dri1_screen_extensions[] = {
+   &driReadDrawableExtension,
+   &driCopySubBufferExtension.base,
+   &driSwapControlExtension.base,
+   &driFrameTrackingExtension.base,
+   &driMediaStreamCounterExtension.base,
+   NULL
+};
+
+struct dri1_api *__dri1_api_hooks = NULL;
+
+static INLINE void
+dri1_copy_version(struct dri1_api_version *dst,
+		  const struct __DRIversionRec *src)
+{
+   dst->major = src->major;
+   dst->minor = src->minor;
+   dst->patch_level = src->patch;
+}
+
+const __DRIconfig **
+dri1_init_screen(__DRIscreen * sPriv)
+{
+   struct dri_screen *screen;
+   const __DRIconfig **configs;
+   struct dri1_create_screen_arg arg;
+
+   screen = CALLOC_STRUCT(dri_screen);
+   if (!screen)
+      return NULL;
+
+   screen->api = drm_api_create();
+   screen->sPriv = sPriv;
+   screen->fd = sPriv->fd;
+   screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
+
+   sPriv->private = (void *)screen;
+   sPriv->extensions = dri1_screen_extensions;
+
+   arg.base.mode = DRM_CREATE_DRI1;
+   arg.lf = &dri1_lf;
+   arg.ddx_info = sPriv->pDevPriv;
+   arg.ddx_info_size = sPriv->devPrivSize;
+   arg.sarea = sPriv->pSAREA;
+   dri1_copy_version(&arg.ddx_version, &sPriv->ddx_version);
+   dri1_copy_version(&arg.dri_version, &sPriv->dri_version);
+   dri1_copy_version(&arg.drm_version, &sPriv->drm_version);
+   arg.api = NULL;
+
+   screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
+
+   if (!screen->pipe_screen || !arg.api) {
+      debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
+      goto out_no_screen;
+   }
+
+   __dri1_api_hooks = arg.api;
+
+   driParseOptionInfo(&screen->optionCache,
+		      __driConfigOptions, __driNConfigOptions);
+
+   /**
+    * FIXME: If the driver supports format conversion swapbuffer blits, we might
+    * want to support other color bit depths than the server is currently
+    * using.
+    */
+
+   configs = dri_fill_in_modes(screen, sPriv->fbBPP);
+   if (!configs)
+      goto out_no_configs;
+
+   return configs;
+ out_no_configs:
+   screen->pipe_screen->destroy(screen->pipe_screen);
+ out_no_screen:
+   FREE(screen);
+   return NULL;
+}