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/*
* Copyright © 2014-2017 Intel Corporation
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
*/
#ifndef _INTEL_UC_FW_H_
#define _INTEL_UC_FW_H_
struct drm_printer;
struct drm_i915_private;
struct i915_vma;
/* Home of GuC, HuC and DMC firmwares */
#define INTEL_UC_FIRMWARE_URL "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915"
enum intel_uc_fw_status {
INTEL_UC_FIRMWARE_FAIL = -1,
INTEL_UC_FIRMWARE_NONE = 0,
INTEL_UC_FIRMWARE_PENDING,
INTEL_UC_FIRMWARE_SUCCESS
};
enum intel_uc_fw_type {
INTEL_UC_FW_TYPE_GUC,
INTEL_UC_FW_TYPE_HUC
};
/*
* This structure encapsulates all the data needed during the process
* of fetching, caching, and loading the firmware image into the uC.
*/
struct intel_uc_fw {
const char *path;
size_t size;
struct drm_i915_gem_object *obj;
enum intel_uc_fw_status fetch_status;
enum intel_uc_fw_status load_status;
/*
* The firmware build process will generate a version header file with major and
* minor version defined. The versions are built into CSS header of firmware.
* i915 kernel driver set the minimal firmware version required per platform.
*/
u16 major_ver_wanted;
u16 minor_ver_wanted;
u16 major_ver_found;
u16 minor_ver_found;
enum intel_uc_fw_type type;
u32 header_size;
u32 header_offset;
u32 rsa_size;
u32 rsa_offset;
u32 ucode_size;
u32 ucode_offset;
};
static inline
const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status)
{
switch (status) {
case INTEL_UC_FIRMWARE_FAIL:
return "FAIL";
case INTEL_UC_FIRMWARE_NONE:
return "NONE";
case INTEL_UC_FIRMWARE_PENDING:
return "PENDING";
case INTEL_UC_FIRMWARE_SUCCESS:
return "SUCCESS";
}
return "<invalid>";
}
static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type)
{
switch (type) {
case INTEL_UC_FW_TYPE_GUC:
return "GuC";
case INTEL_UC_FW_TYPE_HUC:
return "HuC";
}
return "uC";
}
static inline
void intel_uc_fw_init(struct intel_uc_fw *uc_fw, enum intel_uc_fw_type type)
{
uc_fw->path = NULL;
uc_fw->fetch_status = INTEL_UC_FIRMWARE_NONE;
uc_fw->load_status = INTEL_UC_FIRMWARE_NONE;
uc_fw->type = type;
}
static inline bool intel_uc_fw_is_selected(struct intel_uc_fw *uc_fw)
{
return uc_fw->path != NULL;
}
static inline bool intel_uc_fw_is_loaded(struct intel_uc_fw *uc_fw)
{
return uc_fw->load_status == INTEL_UC_FIRMWARE_SUCCESS;
}
static inline void intel_uc_fw_sanitize(struct intel_uc_fw *uc_fw)
{
if (intel_uc_fw_is_loaded(uc_fw))
uc_fw->load_status = INTEL_UC_FIRMWARE_PENDING;
}
/**
* intel_uc_fw_get_upload_size() - Get size of firmware needed to be uploaded.
* @uc_fw: uC firmware.
*
* Get the size of the firmware and header that will be uploaded to WOPCM.
*
* Return: Upload firmware size, or zero on firmware fetch failure.
*/
static inline u32 intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw)
{
if (uc_fw->fetch_status != INTEL_UC_FIRMWARE_SUCCESS)
return 0;
return uc_fw->header_size + uc_fw->ucode_size;
}
void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
struct intel_uc_fw *uc_fw);
int intel_uc_fw_upload(struct intel_uc_fw *uc_fw,
int (*xfer)(struct intel_uc_fw *uc_fw,
struct i915_vma *vma));
void intel_uc_fw_fini(struct intel_uc_fw *uc_fw);
void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p);
#endif
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