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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_surface.c350
1 files changed, 300 insertions, 50 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index e7a744dfcecf..7e281c3c6bc5 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -1,31 +1,13 @@
// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
- * Copyright 2009-2023 VMware, Inc., Palo Alto, CA., USA
- *
- * 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.
+ * Copyright (c) 2009-2025 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
*
**************************************************************************/
#include "vmwgfx_bo.h"
+#include "vmwgfx_cursor_plane.h"
#include "vmwgfx_drv.h"
#include "vmwgfx_resource_priv.h"
#include "vmwgfx_so.h"
@@ -36,9 +18,6 @@
#include <drm/ttm/ttm_placement.h>
#define SVGA3D_FLAGS_64(upper32, lower32) (((uint64_t)upper32 << 32) | lower32)
-#define SVGA3D_FLAGS_UPPER_32(svga3d_flags) (svga3d_flags >> 32)
-#define SVGA3D_FLAGS_LOWER_32(svga3d_flags) \
- (svga3d_flags & ((uint64_t)U32_MAX))
/**
* struct vmw_user_surface - User-space visible surface resource
@@ -660,7 +639,7 @@ static void vmw_user_surface_free(struct vmw_resource *res)
struct vmw_user_surface *user_srf =
container_of(srf, struct vmw_user_surface, srf);
- WARN_ON_ONCE(res->dirty);
+ WARN_ON(res->dirty);
if (user_srf->master)
drm_master_put(&user_srf->master);
kfree(srf->offsets);
@@ -686,6 +665,13 @@ static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
struct vmw_resource *res = &user_srf->srf.res;
*p_base = NULL;
+
+ /*
+ * Dumb buffers own the resource and they'll unref the
+ * resource themselves
+ */
+ WARN_ON(res && res->guest_memory_bo && res->guest_memory_bo->is_dumb);
+
vmw_resource_unreference(&res);
}
@@ -812,24 +798,11 @@ int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
}
}
res->guest_memory_size = cur_bo_offset;
- if (metadata->scanout &&
- metadata->num_sizes == 1 &&
- metadata->sizes[0].width == VMW_CURSOR_SNOOP_WIDTH &&
- metadata->sizes[0].height == VMW_CURSOR_SNOOP_HEIGHT &&
- metadata->format == VMW_CURSOR_SNOOP_FORMAT) {
- const struct SVGA3dSurfaceDesc *desc =
- vmw_surface_get_desc(VMW_CURSOR_SNOOP_FORMAT);
- const u32 cursor_size_bytes = VMW_CURSOR_SNOOP_WIDTH *
- VMW_CURSOR_SNOOP_HEIGHT *
- desc->pitchBytesPerBlock;
- srf->snooper.image = kzalloc(cursor_size_bytes, GFP_KERNEL);
- if (!srf->snooper.image) {
- DRM_ERROR("Failed to allocate cursor_image\n");
- ret = -ENOMEM;
- goto out_no_copy;
- }
- } else {
- srf->snooper.image = NULL;
+
+ srf->snooper.image = vmw_cursor_snooper_create(file_priv, metadata);
+ if (IS_ERR(srf->snooper.image)) {
+ ret = PTR_ERR(srf->snooper.image);
+ goto out_no_copy;
}
if (drm_is_primary_client(file_priv))
@@ -857,9 +830,13 @@ int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
.pin = false
};
- ret = vmw_gem_object_create(dev_priv,
- &params,
- &res->guest_memory_bo);
+ ret = vmw_bo_create(dev_priv, &params, &res->guest_memory_bo);
+ if (unlikely(ret != 0)) {
+ vmw_resource_unreference(&res);
+ goto out_unlock;
+ }
+
+ ret = vmw_bo_add_detached_resource(res->guest_memory_bo, res);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&res);
goto out_unlock;
@@ -892,6 +869,113 @@ out_unlock:
return ret;
}
+static struct vmw_user_surface *
+vmw_lookup_user_surface_for_buffer(struct vmw_private *vmw, struct vmw_bo *bo,
+ u32 handle)
+{
+ struct vmw_user_surface *user_srf = NULL;
+ struct vmw_surface *surf;
+ struct ttm_base_object *base;
+
+ surf = vmw_bo_surface(bo);
+ if (surf) {
+ rcu_read_lock();
+ user_srf = container_of(surf, struct vmw_user_surface, srf);
+ base = &user_srf->prime.base;
+ if (base && !kref_get_unless_zero(&base->refcount)) {
+ drm_dbg_driver(&vmw->drm,
+ "%s: referencing a stale surface handle %d\n",
+ __func__, handle);
+ base = NULL;
+ user_srf = NULL;
+ }
+ rcu_read_unlock();
+ }
+
+ return user_srf;
+}
+
+struct vmw_surface *vmw_lookup_surface_for_buffer(struct vmw_private *vmw,
+ struct vmw_bo *bo,
+ u32 handle)
+{
+ struct vmw_user_surface *user_srf =
+ vmw_lookup_user_surface_for_buffer(vmw, bo, handle);
+ struct vmw_surface *surf = NULL;
+ struct ttm_base_object *base;
+
+ if (user_srf) {
+ surf = vmw_surface_reference(&user_srf->srf);
+ base = &user_srf->prime.base;
+ ttm_base_object_unref(&base);
+ }
+ return surf;
+}
+
+u32 vmw_lookup_surface_handle_for_buffer(struct vmw_private *vmw,
+ struct vmw_bo *bo,
+ u32 handle)
+{
+ struct vmw_user_surface *user_srf =
+ vmw_lookup_user_surface_for_buffer(vmw, bo, handle);
+ int surf_handle = 0;
+ struct ttm_base_object *base;
+
+ if (user_srf) {
+ base = &user_srf->prime.base;
+ surf_handle = (u32)base->handle;
+ ttm_base_object_unref(&base);
+ }
+ return surf_handle;
+}
+
+static int vmw_buffer_prime_to_surface_base(struct vmw_private *dev_priv,
+ struct drm_file *file_priv,
+ u32 fd, u32 *handle,
+ struct ttm_base_object **base_p)
+{
+ struct ttm_base_object *base;
+ struct vmw_bo *bo;
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ struct vmw_user_surface *user_srf;
+ int ret;
+
+ ret = drm_gem_prime_fd_to_handle(&dev_priv->drm, file_priv, fd, handle);
+ if (ret) {
+ drm_warn(&dev_priv->drm,
+ "Wasn't able to find user buffer for fd = %u.\n", fd);
+ return ret;
+ }
+
+ ret = vmw_user_bo_lookup(file_priv, *handle, &bo);
+ if (ret) {
+ drm_warn(&dev_priv->drm,
+ "Wasn't able to lookup user buffer for handle = %u.\n", *handle);
+ return ret;
+ }
+
+ user_srf = vmw_lookup_user_surface_for_buffer(dev_priv, bo, *handle);
+ if (WARN_ON(!user_srf)) {
+ drm_warn(&dev_priv->drm,
+ "User surface fd %d (handle %d) is null.\n", fd, *handle);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ base = &user_srf->prime.base;
+ ret = ttm_ref_object_add(tfile, base, NULL, false);
+ if (ret) {
+ drm_warn(&dev_priv->drm,
+ "Couldn't add an object ref for the buffer (%d).\n", *handle);
+ goto out;
+ }
+
+ *base_p = base;
+out:
+ vmw_user_bo_unref(&bo);
+
+ return ret;
+}
static int
vmw_surface_handle_reference(struct vmw_private *dev_priv,
@@ -901,15 +985,19 @@ vmw_surface_handle_reference(struct vmw_private *dev_priv,
struct ttm_base_object **base_p)
{
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
- struct vmw_user_surface *user_srf;
+ struct vmw_user_surface *user_srf = NULL;
uint32_t handle;
struct ttm_base_object *base;
int ret;
if (handle_type == DRM_VMW_HANDLE_PRIME) {
ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
- if (unlikely(ret != 0))
- return ret;
+ if (ret)
+ return vmw_buffer_prime_to_surface_base(dev_priv,
+ file_priv,
+ u_handle,
+ &handle,
+ base_p);
} else {
handle = u_handle;
}
@@ -1503,7 +1591,12 @@ vmw_gb_surface_define_internal(struct drm_device *dev,
ret = vmw_user_bo_lookup(file_priv, req->base.buffer_handle,
&res->guest_memory_bo);
if (ret == 0) {
- if (res->guest_memory_bo->tbo.base.size < res->guest_memory_size) {
+ if (res->guest_memory_bo->is_dumb) {
+ VMW_DEBUG_USER("Can't backup surface with a dumb buffer.\n");
+ vmw_user_bo_unref(&res->guest_memory_bo);
+ ret = -EINVAL;
+ goto out_unlock;
+ } else if (res->guest_memory_bo->tbo.base.size < res->guest_memory_size) {
VMW_DEBUG_USER("Surface backup buffer too small.\n");
vmw_user_bo_unref(&res->guest_memory_bo);
ret = -EINVAL;
@@ -1546,6 +1639,14 @@ vmw_gb_surface_define_internal(struct drm_device *dev,
}
+ if (res->guest_memory_bo) {
+ ret = vmw_bo_add_detached_resource(res->guest_memory_bo, res);
+ if (unlikely(ret != 0)) {
+ vmw_resource_unreference(&res);
+ goto out_unlock;
+ }
+ }
+
tmp = vmw_resource_reference(res);
ret = ttm_prime_object_init(tfile, res->guest_memory_size, &user_srf->prime,
VMW_RES_SURFACE,
@@ -2100,3 +2201,152 @@ int vmw_gb_surface_define(struct vmw_private *dev_priv,
out_unlock:
return ret;
}
+
+static SVGA3dSurfaceFormat vmw_format_bpp_to_svga(struct vmw_private *vmw,
+ int bpp)
+{
+ switch (bpp) {
+ case 8: /* DRM_FORMAT_C8 */
+ return SVGA3D_P8;
+ case 16: /* DRM_FORMAT_RGB565 */
+ return SVGA3D_R5G6B5;
+ case 32: /* DRM_FORMAT_XRGB8888 */
+ if (has_sm4_context(vmw))
+ return SVGA3D_B8G8R8X8_UNORM;
+ return SVGA3D_X8R8G8B8;
+ default:
+ drm_warn(&vmw->drm, "Unsupported format bpp: %d\n", bpp);
+ return SVGA3D_X8R8G8B8;
+ }
+}
+
+/**
+ * vmw_dumb_create - Create a dumb kms buffer
+ *
+ * @file_priv: Pointer to a struct drm_file identifying the caller.
+ * @dev: Pointer to the drm device.
+ * @args: Pointer to a struct drm_mode_create_dumb structure
+ * Return: Zero on success, negative error code on failure.
+ *
+ * This is a driver callback for the core drm create_dumb functionality.
+ * Note that this is very similar to the vmw_bo_alloc ioctl, except
+ * that the arguments have a different format.
+ */
+int vmw_dumb_create(struct drm_file *file_priv,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ struct vmw_bo *vbo = NULL;
+ struct vmw_resource *res = NULL;
+ union drm_vmw_gb_surface_create_ext_arg arg = { 0 };
+ struct drm_vmw_gb_surface_create_ext_req *req = &arg.req;
+ int ret;
+ struct drm_vmw_size drm_size = {
+ .width = args->width,
+ .height = args->height,
+ .depth = 1,
+ };
+ SVGA3dSurfaceFormat format = vmw_format_bpp_to_svga(dev_priv, args->bpp);
+ const struct SVGA3dSurfaceDesc *desc = vmw_surface_get_desc(format);
+ SVGA3dSurfaceAllFlags flags = SVGA3D_SURFACE_HINT_TEXTURE |
+ SVGA3D_SURFACE_HINT_RENDERTARGET |
+ SVGA3D_SURFACE_SCREENTARGET;
+
+ if (vmw_surface_is_dx_screen_target_format(format)) {
+ flags |= SVGA3D_SURFACE_BIND_SHADER_RESOURCE |
+ SVGA3D_SURFACE_BIND_RENDER_TARGET;
+ }
+
+ /*
+ * Without mob support we're just going to use raw memory buffer
+ * because we wouldn't be able to support full surface coherency
+ * without mobs. There also no reason to support surface coherency
+ * without 3d (i.e. gpu usage on the host) because then all the
+ * contents is going to be rendered guest side.
+ */
+ if (!dev_priv->has_mob || !vmw_supports_3d(dev_priv)) {
+ int cpp = DIV_ROUND_UP(args->bpp, 8);
+
+ switch (cpp) {
+ case 1: /* DRM_FORMAT_C8 */
+ case 2: /* DRM_FORMAT_RGB565 */
+ case 4: /* DRM_FORMAT_XRGB8888 */
+ break;
+ default:
+ /*
+ * Dumb buffers don't allow anything else.
+ * This is tested via IGT's dumb_buffers
+ */
+ return -EINVAL;
+ }
+
+ args->pitch = args->width * cpp;
+ args->size = ALIGN(args->pitch * args->height, PAGE_SIZE);
+
+ ret = vmw_gem_object_create_with_handle(dev_priv, file_priv,
+ args->size, &args->handle,
+ &vbo);
+ /* drop reference from allocate - handle holds it now */
+ drm_gem_object_put(&vbo->tbo.base);
+ return ret;
+ }
+
+ req->version = drm_vmw_gb_surface_v1;
+ req->multisample_pattern = SVGA3D_MS_PATTERN_NONE;
+ req->quality_level = SVGA3D_MS_QUALITY_NONE;
+ req->buffer_byte_stride = 0;
+ req->must_be_zero = 0;
+ req->base.svga3d_flags = SVGA3D_FLAGS_LOWER_32(flags);
+ req->svga3d_flags_upper_32_bits = SVGA3D_FLAGS_UPPER_32(flags);
+ req->base.format = (uint32_t)format;
+ req->base.drm_surface_flags = drm_vmw_surface_flag_scanout;
+ req->base.drm_surface_flags |= drm_vmw_surface_flag_shareable;
+ req->base.drm_surface_flags |= drm_vmw_surface_flag_create_buffer;
+ req->base.drm_surface_flags |= drm_vmw_surface_flag_coherent;
+ req->base.base_size.width = args->width;
+ req->base.base_size.height = args->height;
+ req->base.base_size.depth = 1;
+ req->base.array_size = 0;
+ req->base.mip_levels = 1;
+ req->base.multisample_count = 0;
+ req->base.buffer_handle = SVGA3D_INVALID_ID;
+ req->base.autogen_filter = SVGA3D_TEX_FILTER_NONE;
+ ret = vmw_gb_surface_define_ext_ioctl(dev, &arg, file_priv);
+ if (ret) {
+ drm_warn(dev, "Unable to create a dumb buffer\n");
+ return ret;
+ }
+
+ args->handle = arg.rep.buffer_handle;
+ args->size = arg.rep.buffer_size;
+ args->pitch = vmw_surface_calculate_pitch(desc, &drm_size);
+
+ ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg.rep.handle,
+ user_surface_converter,
+ &res);
+ if (ret) {
+ drm_err(dev, "Created resource handle doesn't exist!\n");
+ goto err;
+ }
+
+ vbo = res->guest_memory_bo;
+ vbo->is_dumb = true;
+ vbo->dumb_surface = vmw_res_to_srf(res);
+ drm_gem_object_put(&vbo->tbo.base);
+ /*
+ * Unset the user surface dtor since this in not actually exposed
+ * to userspace. The suface is owned via the dumb_buffer's GEM handle
+ */
+ struct vmw_user_surface *usurf = container_of(vbo->dumb_surface,
+ struct vmw_user_surface, srf);
+ usurf->prime.base.refcount_release = NULL;
+err:
+ if (res)
+ vmw_resource_unreference(&res);
+
+ ttm_ref_object_base_unref(tfile, arg.rep.handle);
+
+ return ret;
+}
generated by cgit (git 2.34.1) at 2025-07-25 18:29:11 +0000