1 files changed, 229 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
new file mode 100644
index 000000000000..d6f2d2b882e9
--- /dev/null
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
@@ -0,0 +1,229 @@
+/**************************************************************************
+ *
+ * Copyright © 2009 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_drv.h"
+#include "ttm/ttm_bo_driver.h"
+#include "ttm/ttm_placement.h"
+
+static uint32_t vram_placement_flags = TTM_PL_FLAG_VRAM |
+        TTM_PL_FLAG_CACHED;
+
+static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM |
+        TTM_PL_FLAG_CACHED |
+        TTM_PL_FLAG_NO_EVICT;
+
+static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM |
+        TTM_PL_FLAG_CACHED;
+
+struct ttm_placement vmw_vram_placement = {
+        .fpfn = 0,
+        .lpfn = 0,
+        .num_placement = 1,
+        .placement = &vram_placement_flags,
+        .num_busy_placement = 1,
+        .busy_placement = &vram_placement_flags
+};
+
+struct ttm_placement vmw_vram_ne_placement = {
+        .fpfn = 0,
+        .lpfn = 0,
+        .num_placement = 1,
+        .placement = &vram_ne_placement_flags,
+        .num_busy_placement = 1,
+        .busy_placement = &vram_ne_placement_flags
+};
+
+struct ttm_placement vmw_sys_placement = {
+        .fpfn = 0,
+        .lpfn = 0,
+        .num_placement = 1,
+        .placement = &sys_placement_flags,
+        .num_busy_placement = 1,
+        .busy_placement = &sys_placement_flags
+};
+
+struct vmw_ttm_backend {
+        struct ttm_backend backend;
+};
+
+static int vmw_ttm_populate(struct ttm_backend *backend,
+                            unsigned long num_pages, struct page **pages,
+                            struct page *dummy_read_page)
+{
+        return 0;
+}
+
+static int vmw_ttm_bind(struct ttm_backend *backend, struct ttm_mem_reg *bo_mem)
+{
+        return 0;
+}
+
+static int vmw_ttm_unbind(struct ttm_backend *backend)
+{
+        return 0;
+}
+
+static void vmw_ttm_clear(struct ttm_backend *backend)
+{
+}
+
+static void vmw_ttm_destroy(struct ttm_backend *backend)
+{
+        struct vmw_ttm_backend *vmw_be =
+            container_of(backend, struct vmw_ttm_backend, backend);
+
+        kfree(vmw_be);
+}
+
+static struct ttm_backend_func vmw_ttm_func = {
+        .populate = vmw_ttm_populate,
+        .clear = vmw_ttm_clear,
+        .bind = vmw_ttm_bind,
+        .unbind = vmw_ttm_unbind,
+        .destroy = vmw_ttm_destroy,
+};
+
+struct ttm_backend *vmw_ttm_backend_init(struct ttm_bo_device *bdev)
+{
+        struct vmw_ttm_backend *vmw_be;
+
+        vmw_be = kmalloc(sizeof(*vmw_be), GFP_KERNEL);
+        if (!vmw_be)
+                return NULL;
+
+        vmw_be->backend.func = &vmw_ttm_func;
+
+        return &vmw_be->backend;
+}
+
+int vmw_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
+{
+        return 0;
+}
+
+int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
+                      struct ttm_mem_type_manager *man)
+{
+        struct vmw_private *dev_priv =
+            container_of(bdev, struct vmw_private, bdev);
+
+        switch (type) {
+        case TTM_PL_SYSTEM:
+                /* System memory */
+
+                man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
+                man->available_caching = TTM_PL_MASK_CACHING;
+                man->default_caching = TTM_PL_FLAG_CACHED;
+                break;
+        case TTM_PL_VRAM:
+                /* "On-card" video ram */
+                man->gpu_offset = 0;
+                man->io_offset = dev_priv->vram_start;
+                man->io_size = dev_priv->vram_size;
+                man->flags = TTM_MEMTYPE_FLAG_FIXED |
+                    TTM_MEMTYPE_FLAG_NEEDS_IOREMAP | TTM_MEMTYPE_FLAG_MAPPABLE;
+                man->io_addr = NULL;
+                man->available_caching = TTM_PL_MASK_CACHING;
+                man->default_caching = TTM_PL_FLAG_WC;
+                break;
+        default:
+                DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
+                return -EINVAL;
+        }
+        return 0;
+}
+
+void vmw_evict_flags(struct ttm_buffer_object *bo,
+                     struct ttm_placement *placement)
+{
+        *placement = vmw_sys_placement;
+}
+
+/**
+ * FIXME: Proper access checks on buffers.
+ */
+
+static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp)
+{
+        return 0;
+}
+
+/**
+ * FIXME: We're using the old vmware polling method to sync.
+ * Do this with fences instead.
+ */
+
+static void *vmw_sync_obj_ref(void *sync_obj)
+{
+        return sync_obj;
+}
+
+static void vmw_sync_obj_unref(void **sync_obj)
+{
+        *sync_obj = NULL;
+}
+
+static int vmw_sync_obj_flush(void *sync_obj, void *sync_arg)
+{
+        struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;
+
+        mutex_lock(&dev_priv->hw_mutex);
+        vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC);
+        mutex_unlock(&dev_priv->hw_mutex);
+        return 0;
+}
+
+static bool vmw_sync_obj_signaled(void *sync_obj, void *sync_arg)
+{
+        struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;
+        uint32_t sequence = (unsigned long) sync_obj;
+
+        return vmw_fence_signaled(dev_priv, sequence);
+}
+
+static int vmw_sync_obj_wait(void *sync_obj, void *sync_arg,
+                             bool lazy, bool interruptible)
+{
+        struct vmw_private *dev_priv = (struct vmw_private *)sync_arg;
+        uint32_t sequence = (unsigned long) sync_obj;
+
+        return vmw_wait_fence(dev_priv, false, sequence, false, 3*HZ);
+}
+
+struct ttm_bo_driver vmw_bo_driver = {
+        .create_ttm_backend_entry = vmw_ttm_backend_init,
+        .invalidate_caches = vmw_invalidate_caches,
+        .init_mem_type = vmw_init_mem_type,
+        .evict_flags = vmw_evict_flags,
+        .move = NULL,
+        .verify_access = vmw_verify_access,
+        .sync_obj_signaled = vmw_sync_obj_signaled,
+        .sync_obj_wait = vmw_sync_obj_wait,
+        .sync_obj_flush = vmw_sync_obj_flush,
+        .sync_obj_unref = vmw_sync_obj_unref,
+        .sync_obj_ref = vmw_sync_obj_ref
+};