IABSD.fr/xenocara/driver/xf86-video-vmware/src/svga_limits.h

Branch : - branch - master - tag -

• Show log

  Commit

• Author : matthieu
  Date : 2022-06-28 10:09:44
  Hash : eaba5413
  Message : Update to xf86-video-vmware 13.3.0

• driver/xf86-video-vmware/src/svga_limits.h

• /* **********************************************************
   * Copyright (C) 1998-2001 VMware, Inc.
   * All Rights Reserved
   * **********************************************************/
  
  /*
   * svga_limits.h --
   *
   * SVGA limits
   */
  
  #ifndef _SVGA_LIMITS_H_
  #define _SVGA_LIMITS_H_
  
  #define INCLUDE_ALLOW_USERLEVEL
  #define INCLUDE_ALLOW_MONITOR
  #include "includeCheck.h"
  
  /*
   * Location and size of SVGA frame buffer and the FIFO.
   */
  #define SVGA_VRAM_SIZE         (16*1024*1024)
  #define SVGA_MEM_SIZE          (256*1024)
  
  /*
   * SVGA_FB_START is the default starting address of the SVGA frame
   * buffer in the guest's physical address space.
   * SVGA_FB_START_BIGMEM is the starting address of the SVGA frame
   * buffer for VMs that have a large amount of physical memory.
   *
   * The address of SVGA_FB_START is set to 2GB - (SVGA_FB_MAX_SIZE + SVGA_MEM_SIZE), 
   * thus the SVGA frame buffer sits at [SVGA_FB_START .. 2GB-1] in the
   * physical address space.  Our older SVGA drivers for NT treat the
   * address of the frame buffer as a signed integer.  For backwards
   * compatibility, we keep the default location of the frame buffer
   * at under 2GB in the address space.  This restricts VMs to have "only"
   * up to ~2031MB (i.e., up to SVGA_FB_START) of physical memory.
   *
   * For VMs that want more memory than the ~2031MB, we place the SVGA
   * frame buffer at SVGA_FB_START_BIGMEM.  This allows VMs to have up
   * to 3584MB, at least as far as the SVGA frame buffer is concerned
   * (note that there may be other issues that limit the VM memory
   * size).  PCI devices use high memory addresses, so we have to put
   * SVGA_FB_START_BIGMEM low enough so that it doesn't overlap with any
   * of these devices.  Placing SVGA_FB_START_BIGMEM at 0xE0000000
   * should leave plenty of room for the PCI devices.
   *
   * NOTE: All of that is only true for the 0710 chipset.  As of the 0405
   * chipset, the framebuffer start is determined solely based on the value
   * the guest BIOS or OS programs into the PCI base address registers.
   */
  #define SVGA_FB_LEGACY_START		0x7EFC0000
  #define SVGA_FB_LEGACY_START_BIGMEM	0xE0000000
  
  #endif