drivers/gpu/drm/i915/intel_uc_fw.h

   1 /*
   2  * Copyright © 2014-2017 Intel Corporation
   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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef _INTEL_UC_FW_H_
  26 #define _INTEL_UC_FW_H_
  27
  28 struct drm_printer;
  29 struct drm_i915_private;
  30 struct i915_vma;
  31
  32 /* Home of GuC, HuC and DMC firmwares */
  33 #define INTEL_UC_FIRMWARE_URL "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915"
  34
  35 enum intel_uc_fw_status {
  36         INTEL_UC_FIRMWARE_FAIL = -1,
  37         INTEL_UC_FIRMWARE_NONE = 0,
  38         INTEL_UC_FIRMWARE_PENDING,
  39         INTEL_UC_FIRMWARE_SUCCESS
  40 };
  41
  42 enum intel_uc_fw_type {
  43         INTEL_UC_FW_TYPE_GUC,
  44         INTEL_UC_FW_TYPE_HUC
  45 };
  46
  47 /*
  48  * This structure encapsulates all the data needed during the process
  49  * of fetching, caching, and loading the firmware image into the uC.
  50  */
  51 struct intel_uc_fw {
  52         const char *path;
  53         size_t size;
  54         struct drm_i915_gem_object *obj;
  55         enum intel_uc_fw_status fetch_status;
  56         enum intel_uc_fw_status load_status;
  57
  58         /*
  59          * The firmware build process will generate a version header file with major and
  60          * minor version defined. The versions are built into CSS header of firmware.
  61          * i915 kernel driver set the minimal firmware version required per platform.
  62          */
  63         u16 major_ver_wanted;
  64         u16 minor_ver_wanted;
  65         u16 major_ver_found;
  66         u16 minor_ver_found;
  67
  68         enum intel_uc_fw_type type;
  69         u32 header_size;
  70         u32 header_offset;
  71         u32 rsa_size;
  72         u32 rsa_offset;
  73         u32 ucode_size;
  74         u32 ucode_offset;
  75 };
  76
  77 static inline
  78 const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status)
  79 {
  80         switch (status) {
  81         case INTEL_UC_FIRMWARE_FAIL:
  82                 return "FAIL";
  83         case INTEL_UC_FIRMWARE_NONE:
  84                 return "NONE";
  85         case INTEL_UC_FIRMWARE_PENDING:
  86                 return "PENDING";
  87         case INTEL_UC_FIRMWARE_SUCCESS:
  88                 return "SUCCESS";
  89         }
  90         return "<invalid>";
  91 }
  92
  93 static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type)
  94 {
  95         switch (type) {
  96         case INTEL_UC_FW_TYPE_GUC:
  97                 return "GuC";
  98         case INTEL_UC_FW_TYPE_HUC:
  99                 return "HuC";
 100         }
 101         return "uC";
 102 }
 103
 104 static inline
 105 void intel_uc_fw_init(struct intel_uc_fw *uc_fw, enum intel_uc_fw_type type)
 106 {
 107         uc_fw->path = NULL;
 108         uc_fw->fetch_status = INTEL_UC_FIRMWARE_NONE;
 109         uc_fw->load_status = INTEL_UC_FIRMWARE_NONE;
 110         uc_fw->type = type;
 111 }
 112
 113 static inline bool intel_uc_fw_is_selected(struct intel_uc_fw *uc_fw)
 114 {
 115         return uc_fw->path != NULL;
 116 }
 117
 118 static inline void intel_uc_fw_sanitize(struct intel_uc_fw *uc_fw)
 119 {
 120         if (uc_fw->load_status == INTEL_UC_FIRMWARE_SUCCESS)
 121                 uc_fw->load_status = INTEL_UC_FIRMWARE_PENDING;
 122 }
 123
 124 /**
 125  * intel_uc_fw_get_upload_size() - Get size of firmware needed to be uploaded.
 126  * @uc_fw: uC firmware.
 127  *
 128  * Get the size of the firmware and header that will be uploaded to WOPCM.
 129  *
 130  * Return: Upload firmware size, or zero on firmware fetch failure.
 131  */
 132 static inline u32 intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw)
 133 {
 134         if (uc_fw->fetch_status != INTEL_UC_FIRMWARE_SUCCESS)
 135                 return 0;
 136
 137         return uc_fw->header_size + uc_fw->ucode_size;
 138 }
 139
 140 void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
 141                        struct intel_uc_fw *uc_fw);
 142 int intel_uc_fw_upload(struct intel_uc_fw *uc_fw,
 143                        int (*xfer)(struct intel_uc_fw *uc_fw,
 144                                    struct i915_vma *vma));
 145 void intel_uc_fw_fini(struct intel_uc_fw *uc_fw);
 146 void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p);
 147
 148 #endif