LXR linux/drivers/gpu/drm/i915/gvt/mmio.h

   1/*
   2 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice (including the next
  12 * paragraph) shall be included in all copies or substantial portions of the
  13 * Software.
  14 *
  15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21 * SOFTWARE.
  22 *
  23 * Authors:
  24 *    Ke Yu
  25 *    Kevin Tian <kevin.tian@intel.com>
  26 *    Dexuan Cui
  27 *
  28 * Contributors:
  29 *    Tina Zhang <tina.zhang@intel.com>
  30 *    Min He <min.he@intel.com>
  31 *    Niu Bing <bing.niu@intel.com>
  32 *    Zhi Wang <zhi.a.wang@intel.com>
  33 *
  34 */
  35
  36#ifndef _GVT_MMIO_H_
  37#define _GVT_MMIO_H_
  38
  39struct intel_gvt;
  40struct intel_vgpu;
  41
  42#define D_BDW   (1 << 0)
  43#define D_SKL   (1 << 1)
  44#define D_KBL   (1 << 2)
  45
  46#define D_GEN9PLUS      (D_SKL | D_KBL)
  47#define D_GEN8PLUS      (D_BDW | D_SKL | D_KBL)
  48
  49#define D_SKL_PLUS      (D_SKL | D_KBL)
  50#define D_BDW_PLUS      (D_BDW | D_SKL | D_KBL)
  51
  52#define D_PRE_SKL       (D_BDW)
  53#define D_ALL           (D_BDW | D_SKL | D_KBL)
  54
  55typedef int (*gvt_mmio_func)(struct intel_vgpu *, unsigned int, void *,
  56                             unsigned int);
  57
  58struct intel_gvt_mmio_info {
  59        u32 offset;
  60        u64 ro_mask;
  61        u32 device;
  62        gvt_mmio_func read;
  63        gvt_mmio_func write;
  64        u32 addr_range;
  65        struct hlist_node node;
  66};
  67
  68unsigned long intel_gvt_get_device_type(struct intel_gvt *gvt);
  69bool intel_gvt_match_device(struct intel_gvt *gvt, unsigned long device);
  70
  71int intel_gvt_setup_mmio_info(struct intel_gvt *gvt);
  72void intel_gvt_clean_mmio_info(struct intel_gvt *gvt);
  73
  74#define INTEL_GVT_MMIO_OFFSET(reg) ({ \
  75        typeof(reg) __reg = reg; \
  76        u32 *offset = (u32 *)&__reg; \
  77        *offset; \
  78})
  79
  80int intel_vgpu_init_mmio(struct intel_vgpu *vgpu);
  81void intel_vgpu_reset_mmio(struct intel_vgpu *vgpu, bool dmlr);
  82void intel_vgpu_clean_mmio(struct intel_vgpu *vgpu);
  83
  84int intel_vgpu_gpa_to_mmio_offset(struct intel_vgpu *vgpu, u64 gpa);
  85
  86int intel_vgpu_emulate_mmio_read(struct intel_vgpu *vgpu, u64 pa,
  87                                void *p_data, unsigned int bytes);
  88int intel_vgpu_emulate_mmio_write(struct intel_vgpu *vgpu, u64 pa,
  89                                void *p_data, unsigned int bytes);
  90
  91int intel_vgpu_default_mmio_read(struct intel_vgpu *vgpu, unsigned int offset,
  92                                 void *p_data, unsigned int bytes);
  93int intel_vgpu_default_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
  94                                  void *p_data, unsigned int bytes);
  95
  96bool intel_gvt_in_force_nonpriv_whitelist(struct intel_gvt *gvt,
  97                                          unsigned int offset);
  98
  99int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset,
 100                           void *pdata, unsigned int bytes, bool is_read);
 101
 102#endif
 103