linux/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c

// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
 *
 * Copyright 2009-2015 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,
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#include "vmwgfx_drv.h"

#define VMW_PPN_SIZE …
/* A future safe maximum remap size. */
#define VMW_PPN_PER_REMAP …
#define DMA_ADDR_INVALID …
#define DMA_PAGE_INVALID …

static int vmw_gmr2_bind(struct vmw_private *dev_priv,
			 struct vmw_piter *iter,
			 unsigned long num_pages,
			 int gmr_id)
{ … }

static void vmw_gmr2_unbind(struct vmw_private *dev_priv,
			    int gmr_id)
{ … }


int vmw_gmr_bind(struct vmw_private *dev_priv,
		 const struct vmw_sg_table *vsgt,
		 unsigned long num_pages,
		 int gmr_id)
{ … }


void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id)
{ … }