[PATCH 12/33] drm/vmwgfx: Hook up guest-backed queries
Thomas Hellstrom
thellstrom at vmware.com
Thu Jan 16 12:39:00 PST 2014
Perform a translation of legacy query commands should they occur
in the command stream.
Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>
Reviewed-by: Brian Paul <brianp at vmware.com>
Reviewed-by: Zack Rusin <zackr at vmware.com>
---
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 1 +
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 215 +++++++++++++++++++++++++++++++-
drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c | 90 +++++++++++--
3 files changed, 292 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index a9a0d69..3d672ad 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -167,6 +167,7 @@ struct vmw_fifo_state {
};
struct vmw_relocation {
+ SVGAMobId *mob_loc;
SVGAGuestPtr *location;
uint32_t index;
};
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 9d7e49d..6583dd3 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -680,6 +680,66 @@ static void vmw_query_bo_switch_commit(struct vmw_private *dev_priv,
}
/**
+ * vmw_translate_mob_pointer - Prepare to translate a user-space buffer
+ * handle to a MOB id.
+ *
+ * @dev_priv: Pointer to a device private structure.
+ * @sw_context: The software context used for this command batch validation.
+ * @id: Pointer to the user-space handle to be translated.
+ * @vmw_bo_p: Points to a location that, on successful return will carry
+ * a reference-counted pointer to the DMA buffer identified by the
+ * user-space handle in @id.
+ *
+ * This function saves information needed to translate a user-space buffer
+ * handle to a MOB id. The translation does not take place immediately, but
+ * during a call to vmw_apply_relocations(). This function builds a relocation
+ * list and a list of buffers to validate. The former needs to be freed using
+ * either vmw_apply_relocations() or vmw_free_relocations(). The latter
+ * needs to be freed using vmw_clear_validations.
+ */
+static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
+ struct vmw_sw_context *sw_context,
+ SVGAMobId *id,
+ struct vmw_dma_buffer **vmw_bo_p)
+{
+ struct vmw_dma_buffer *vmw_bo = NULL;
+ struct ttm_buffer_object *bo;
+ uint32_t handle = *id;
+ struct vmw_relocation *reloc;
+ int ret;
+
+ ret = vmw_user_dmabuf_lookup(sw_context->tfile, handle, &vmw_bo);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Could not find or use MOB buffer.\n");
+ return -EINVAL;
+ }
+ bo = &vmw_bo->base;
+
+ if (unlikely(sw_context->cur_reloc >= VMWGFX_MAX_RELOCATIONS)) {
+ DRM_ERROR("Max number relocations per submission"
+ " exceeded\n");
+ ret = -EINVAL;
+ goto out_no_reloc;
+ }
+
+ reloc = &sw_context->relocs[sw_context->cur_reloc++];
+ reloc->mob_loc = id;
+ reloc->location = NULL;
+
+ ret = vmw_bo_to_validate_list(sw_context, bo, true, &reloc->index);
+ if (unlikely(ret != 0))
+ goto out_no_reloc;
+
+ *vmw_bo_p = vmw_bo;
+ return 0;
+
+out_no_reloc:
+ vmw_dmabuf_unreference(&vmw_bo);
+ vmw_bo_p = NULL;
+ return ret;
+}
+
+/**
* vmw_translate_guest_pointer - Prepare to translate a user-space buffer
* handle to a valid SVGAGuestPtr
*
@@ -740,6 +800,30 @@ out_no_reloc:
}
/**
+ * vmw_cmd_begin_gb_query - validate a SVGA_3D_CMD_BEGIN_GB_QUERY command.
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context used for this command submission.
+ * @header: Pointer to the command header in the command stream.
+ */
+static int vmw_cmd_begin_gb_query(struct vmw_private *dev_priv,
+ struct vmw_sw_context *sw_context,
+ SVGA3dCmdHeader *header)
+{
+ struct vmw_begin_gb_query_cmd {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdBeginGBQuery q;
+ } *cmd;
+
+ cmd = container_of(header, struct vmw_begin_gb_query_cmd,
+ header);
+
+ return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
+ user_context_converter, &cmd->q.cid,
+ NULL);
+}
+
+/**
* vmw_cmd_begin_query - validate a SVGA_3D_CMD_BEGIN_QUERY command.
*
* @dev_priv: Pointer to a device private struct.
@@ -758,12 +842,64 @@ static int vmw_cmd_begin_query(struct vmw_private *dev_priv,
cmd = container_of(header, struct vmw_begin_query_cmd,
header);
+ if (unlikely(dev_priv->has_mob)) {
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdBeginGBQuery q;
+ } gb_cmd;
+
+ BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
+
+ gb_cmd.header.id = SVGA_3D_CMD_BEGIN_GB_QUERY;
+ gb_cmd.header.size = cmd->header.size;
+ gb_cmd.q.cid = cmd->q.cid;
+ gb_cmd.q.type = cmd->q.type;
+
+ memcpy(cmd, &gb_cmd, sizeof(*cmd));
+ return vmw_cmd_begin_gb_query(dev_priv, sw_context, header);
+ }
+
return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
user_context_converter, &cmd->q.cid,
NULL);
}
/**
+ * vmw_cmd_end_gb_query - validate a SVGA_3D_CMD_END_GB_QUERY command.
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context used for this command submission.
+ * @header: Pointer to the command header in the command stream.
+ */
+static int vmw_cmd_end_gb_query(struct vmw_private *dev_priv,
+ struct vmw_sw_context *sw_context,
+ SVGA3dCmdHeader *header)
+{
+ struct vmw_dma_buffer *vmw_bo;
+ struct vmw_query_cmd {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdEndGBQuery q;
+ } *cmd;
+ int ret;
+
+ cmd = container_of(header, struct vmw_query_cmd, header);
+ ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = vmw_translate_mob_ptr(dev_priv, sw_context,
+ &cmd->q.mobid,
+ &vmw_bo);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = vmw_query_bo_switch_prepare(dev_priv, &vmw_bo->base, sw_context);
+
+ vmw_dmabuf_unreference(&vmw_bo);
+ return ret;
+}
+
+/**
* vmw_cmd_end_query - validate a SVGA_3D_CMD_END_QUERY command.
*
* @dev_priv: Pointer to a device private struct.
@@ -782,6 +918,25 @@ static int vmw_cmd_end_query(struct vmw_private *dev_priv,
int ret;
cmd = container_of(header, struct vmw_query_cmd, header);
+ if (dev_priv->has_mob) {
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdEndGBQuery q;
+ } gb_cmd;
+
+ BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
+
+ gb_cmd.header.id = SVGA_3D_CMD_END_GB_QUERY;
+ gb_cmd.header.size = cmd->header.size;
+ gb_cmd.q.cid = cmd->q.cid;
+ gb_cmd.q.type = cmd->q.type;
+ gb_cmd.q.mobid = cmd->q.guestResult.gmrId;
+ gb_cmd.q.offset = cmd->q.guestResult.offset;
+
+ memcpy(cmd, &gb_cmd, sizeof(*cmd));
+ return vmw_cmd_end_gb_query(dev_priv, sw_context, header);
+ }
+
ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
if (unlikely(ret != 0))
return ret;
@@ -798,7 +953,40 @@ static int vmw_cmd_end_query(struct vmw_private *dev_priv,
return ret;
}
-/*
+/**
+ * vmw_cmd_wait_gb_query - validate a SVGA_3D_CMD_WAIT_GB_QUERY command.
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context used for this command submission.
+ * @header: Pointer to the command header in the command stream.
+ */
+static int vmw_cmd_wait_gb_query(struct vmw_private *dev_priv,
+ struct vmw_sw_context *sw_context,
+ SVGA3dCmdHeader *header)
+{
+ struct vmw_dma_buffer *vmw_bo;
+ struct vmw_query_cmd {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdWaitForGBQuery q;
+ } *cmd;
+ int ret;
+
+ cmd = container_of(header, struct vmw_query_cmd, header);
+ ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
+ if (unlikely(ret != 0))
+ return ret;
+
+ ret = vmw_translate_mob_ptr(dev_priv, sw_context,
+ &cmd->q.mobid,
+ &vmw_bo);
+ if (unlikely(ret != 0))
+ return ret;
+
+ vmw_dmabuf_unreference(&vmw_bo);
+ return 0;
+}
+
+/**
* vmw_cmd_wait_query - validate a SVGA_3D_CMD_WAIT_QUERY command.
*
* @dev_priv: Pointer to a device private struct.
@@ -817,6 +1005,25 @@ static int vmw_cmd_wait_query(struct vmw_private *dev_priv,
int ret;
cmd = container_of(header, struct vmw_query_cmd, header);
+ if (dev_priv->has_mob) {
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdWaitForGBQuery q;
+ } gb_cmd;
+
+ BUG_ON(sizeof(gb_cmd) != sizeof(*cmd));
+
+ gb_cmd.header.id = SVGA_3D_CMD_WAIT_FOR_GB_QUERY;
+ gb_cmd.header.size = cmd->header.size;
+ gb_cmd.q.cid = cmd->q.cid;
+ gb_cmd.q.type = cmd->q.type;
+ gb_cmd.q.mobid = cmd->q.guestResult.gmrId;
+ gb_cmd.q.offset = cmd->q.guestResult.offset;
+
+ memcpy(cmd, &gb_cmd, sizeof(*cmd));
+ return vmw_cmd_wait_gb_query(dev_priv, sw_context, header);
+ }
+
ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
if (unlikely(ret != 0))
return ret;
@@ -1093,6 +1300,9 @@ static vmw_cmd_func vmw_cmd_funcs[SVGA_3D_CMD_MAX] = {
VMW_CMD_DEF(SVGA_3D_CMD_GENERATE_MIPMAPS, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_ACTIVATE_SURFACE, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_DEACTIVATE_SURFACE, &vmw_cmd_invalid),
+ VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_GB_QUERY, &vmw_cmd_begin_gb_query),
+ VMW_CMD_DEF(SVGA_3D_CMD_END_GB_QUERY, &vmw_cmd_end_gb_query),
+ VMW_CMD_DEF(SVGA_3D_CMD_WAIT_FOR_GB_QUERY, &vmw_cmd_wait_gb_query),
};
static int vmw_cmd_check(struct vmw_private *dev_priv,
@@ -1182,6 +1392,9 @@ static void vmw_apply_relocations(struct vmw_sw_context *sw_context)
case VMW_PL_GMR:
reloc->location->gmrId = bo->mem.start;
break;
+ case VMW_PL_MOB:
+ *reloc->mob_loc = bo->mem.start;
+ break;
default:
BUG();
}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index 3eb1486..01baffd 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -511,24 +511,16 @@ out_err:
}
/**
- * vmw_fifo_emit_dummy_query - emits a dummy query to the fifo.
+ * vmw_fifo_emit_dummy_legacy_query - emits a dummy query to the fifo using
+ * legacy query commands.
*
* @dev_priv: The device private structure.
* @cid: The hardware context id used for the query.
*
- * This function is used to emit a dummy occlusion query with
- * no primitives rendered between query begin and query end.
- * It's used to provide a query barrier, in order to know that when
- * this query is finished, all preceding queries are also finished.
- *
- * A Query results structure should have been initialized at the start
- * of the dev_priv->dummy_query_bo buffer object. And that buffer object
- * must also be either reserved or pinned when this function is called.
- *
- * Returns -ENOMEM on failure to reserve fifo space.
+ * See the vmw_fifo_emit_dummy_query documentation.
*/
-int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
- uint32_t cid)
+static int vmw_fifo_emit_dummy_legacy_query(struct vmw_private *dev_priv,
+ uint32_t cid)
{
/*
* A query wait without a preceding query end will
@@ -566,3 +558,75 @@ int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
return 0;
}
+
+/**
+ * vmw_fifo_emit_dummy_gb_query - emits a dummy query to the fifo using
+ * guest-backed resource query commands.
+ *
+ * @dev_priv: The device private structure.
+ * @cid: The hardware context id used for the query.
+ *
+ * See the vmw_fifo_emit_dummy_query documentation.
+ */
+static int vmw_fifo_emit_dummy_gb_query(struct vmw_private *dev_priv,
+ uint32_t cid)
+{
+ /*
+ * A query wait without a preceding query end will
+ * actually finish all queries for this cid
+ * without writing to the query result structure.
+ */
+
+ struct ttm_buffer_object *bo = dev_priv->dummy_query_bo;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdWaitForGBQuery body;
+ } *cmd;
+
+ cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
+
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("Out of fifo space for dummy query.\n");
+ return -ENOMEM;
+ }
+
+ cmd->header.id = SVGA_3D_CMD_WAIT_FOR_GB_QUERY;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = cid;
+ cmd->body.type = SVGA3D_QUERYTYPE_OCCLUSION;
+ BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
+ cmd->body.mobid = bo->mem.start;
+ cmd->body.offset = 0;
+
+ vmw_fifo_commit(dev_priv, sizeof(*cmd));
+
+ return 0;
+}
+
+
+/**
+ * vmw_fifo_emit_dummy_gb_query - emits a dummy query to the fifo using
+ * appropriate resource query commands.
+ *
+ * @dev_priv: The device private structure.
+ * @cid: The hardware context id used for the query.
+ *
+ * This function is used to emit a dummy occlusion query with
+ * no primitives rendered between query begin and query end.
+ * It's used to provide a query barrier, in order to know that when
+ * this query is finished, all preceding queries are also finished.
+ *
+ * A Query results structure should have been initialized at the start
+ * of the dev_priv->dummy_query_bo buffer object. And that buffer object
+ * must also be either reserved or pinned when this function is called.
+ *
+ * Returns -ENOMEM on failure to reserve fifo space.
+ */
+int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
+ uint32_t cid)
+{
+ if (dev_priv->has_mob)
+ return vmw_fifo_emit_dummy_gb_query(dev_priv, cid);
+
+ return vmw_fifo_emit_dummy_legacy_query(dev_priv, cid);
+}
--
1.8.3.2
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