drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
Extension
.c
Size
8769 bytes
Lines
319
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
 *
 * Copyright 2009-2022 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.
 *
 **************************************************************************/

#include "vmwgfx_drv.h"
#include "vmwgfx_devcaps.h"
#include "vmwgfx_kms.h"

#include <drm/vmwgfx_drm.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>

int vmw_getparam_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv)
{
	struct vmw_private *dev_priv = vmw_priv(dev);
	struct drm_vmw_getparam_arg *param =
	    (struct drm_vmw_getparam_arg *)data;
	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);

	switch (param->param) {
	case DRM_VMW_PARAM_NUM_STREAMS:
		param->value = vmw_overlay_num_overlays(dev_priv);
		break;
	case DRM_VMW_PARAM_NUM_FREE_STREAMS:
		param->value = vmw_overlay_num_free_overlays(dev_priv);
		break;
	case DRM_VMW_PARAM_3D:
		param->value = vmw_supports_3d(dev_priv) ? 1 : 0;
		break;
	case DRM_VMW_PARAM_HW_CAPS:
		param->value = dev_priv->capabilities;
		break;
	case DRM_VMW_PARAM_HW_CAPS2:
		param->value = dev_priv->capabilities2;
		break;
	case DRM_VMW_PARAM_FIFO_CAPS:
		param->value = vmw_fifo_caps(dev_priv);
		break;
	case DRM_VMW_PARAM_MAX_FB_SIZE:
		param->value = dev_priv->max_primary_mem;
		break;
	case DRM_VMW_PARAM_FIFO_HW_VERSION:
	{
		if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
			param->value = SVGA3D_HWVERSION_WS8_B1;
		else
			param->value = vmw_fifo_mem_read(
					       dev_priv,
					       ((vmw_fifo_caps(dev_priv) &
						 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
							SVGA_FIFO_3D_HWVERSION_REVISED :
							SVGA_FIFO_3D_HWVERSION));
		break;
	}
	case DRM_VMW_PARAM_MAX_SURF_MEMORY:
		if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
		    !vmw_fp->gb_aware)
			param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
		else
			param->value = dev_priv->memory_size;
		break;
	case DRM_VMW_PARAM_3D_CAPS_SIZE:
		param->value = vmw_devcaps_size(dev_priv, vmw_fp->gb_aware);
		break;
	case DRM_VMW_PARAM_MAX_MOB_MEMORY:
		vmw_fp->gb_aware = true;

Annotation

Implementation Notes