Release 4.12 drivers/gpu/drm/i915/intel_uc.h
/*
* Copyright © 2014 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_H_
#define _INTEL_UC_H_
#include "intel_guc_fwif.h"
#include "i915_guc_reg.h"
#include "intel_ringbuffer.h"
#include "i915_vma.h"
struct drm_i915_gem_request;
/*
* This structure primarily describes the GEM object shared with the GuC.
* The specs sometimes refer to this object as a "GuC context", but we use
* the term "client" to avoid confusion with hardware contexts. This
* GEM object is held for the entire lifetime of our interaction with
* the GuC, being allocated before the GuC is loaded with its firmware.
* Because there's no way to update the address used by the GuC after
* initialisation, the shared object must stay pinned into the GGTT as
* long as the GuC is in use. We also keep the first page (only) mapped
* into kernel address space, as it includes shared data that must be
* updated on every request submission.
*
* The single GEM object described here is actually made up of several
* separate areas, as far as the GuC is concerned. The first page (kept
* kmap'd) includes the "process descriptor" which holds sequence data for
* the doorbell, and one cacheline which actually *is* the doorbell; a
* write to this will "ring the doorbell" (i.e. send an interrupt to the
* GuC). The subsequent pages of the client object constitute the work
* queue (a circular array of work items), again described in the process
* descriptor. Work queue pages are mapped momentarily as required.
*
* We also keep a few statistics on failures. Ideally, these should all
* be zero!
* no_wq_space: times that the submission pre-check found no space was
* available in the work queue (note, the queue is shared,
* not per-engine). It is OK for this to be nonzero, but
* it should not be huge!
* b_fail: failed to ring the doorbell. This should never happen, unless
* somehow the hardware misbehaves, or maybe if the GuC firmware
* crashes? We probably need to reset the GPU to recover.
* retcode: errno from last guc_submit()
*/
struct i915_guc_client {
struct i915_vma *vma;
void *vaddr;
struct i915_gem_context *owner;
struct intel_guc *guc;
uint32_t engines; /* bitmap of (host) engine ids */
uint32_t priority;
u32 stage_id;
uint32_t proc_desc_offset;
u16 doorbell_id;
unsigned long doorbell_offset;
u32 doorbell_cookie;
spinlock_t wq_lock;
uint32_t wq_offset;
uint32_t wq_size;
uint32_t wq_tail;
uint32_t wq_rsvd;
uint32_t no_wq_space;
uint32_t b_fail;
int retcode;
/* Per-engine counts of GuC submissions */
uint64_t submissions[I915_NUM_ENGINES];
};
enum intel_uc_fw_status {
INTEL_UC_FIRMWARE_FAIL = -1,
INTEL_UC_FIRMWARE_NONE = 0,
INTEL_UC_FIRMWARE_PENDING,
INTEL_UC_FIRMWARE_SUCCESS
};
/* User-friendly representation of an enum */
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>";
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Michal Wajdeczko | 46 | 100.00% | 2 | 100.00% |
| Total | 46 | 100.00% | 2 | 100.00% |
enum intel_uc_fw_type {
INTEL_UC_FW_TYPE_GUC,
INTEL_UC_FW_TYPE_HUC
};
/* User-friendly representation of an enum */
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";
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Michal Wajdeczko | 34 | 100.00% | 2 | 100.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
/*
* This structure encapsulates all the data needed during the process
* of fetching, caching, and loading the firmware image into the GuC.
*/
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;
uint16_t major_ver_wanted;
uint16_t minor_ver_wanted;
uint16_t major_ver_found;
uint16_t minor_ver_found;
enum intel_uc_fw_type type;
uint32_t header_size;
uint32_t header_offset;
uint32_t rsa_size;
uint32_t rsa_offset;
uint32_t ucode_size;
uint32_t ucode_offset;
};
struct intel_guc_log {
uint32_t flags;
struct i915_vma *vma;
/* The runtime stuff gets created only when GuC logging gets enabled */
struct {
void *buf_addr;
struct workqueue_struct *flush_wq;
struct work_struct flush_work;
struct rchan *relay_chan;
} runtime;
/* logging related stats */
u32 capture_miss_count;
u32 flush_interrupt_count;
u32 prev_overflow_count[GUC_MAX_LOG_BUFFER];
u32 total_overflow_count[GUC_MAX_LOG_BUFFER];
u32 flush_count[GUC_MAX_LOG_BUFFER];
};
struct intel_guc {
struct intel_uc_fw fw;
struct intel_guc_log log;
/* intel_guc_recv interrupt related state */
bool interrupts_enabled;
struct i915_vma *ads_vma;
struct i915_vma *stage_desc_pool;
void *stage_desc_pool_vaddr;
struct ida stage_ids;
struct i915_guc_client *execbuf_client;
DECLARE_BITMAP(doorbell_bitmap, GUC_NUM_DOORBELLS);
uint32_t db_cacheline; /* Cyclic counter mod pagesize */
/* Action status & statistics */
uint64_t action_count; /* Total commands issued */
uint32_t action_cmd; /* Last command word */
uint32_t action_status; /* Last return status */
uint32_t action_fail; /* Total number of failures */
int32_t action_err; /* Last error code */
uint64_t submissions[I915_NUM_ENGINES];
uint32_t last_seqno[I915_NUM_ENGINES];
/* To serialize the intel_guc_send actions */
struct mutex send_mutex;
/* GuC's FW specific send function */
int (*send)(struct intel_guc *guc, const u32 *data, u32 len);
};
struct intel_huc {
/* Generic uC firmware management */
struct intel_uc_fw fw;
/* HuC-specific additions */
};
/* intel_uc.c */
void intel_uc_sanitize_options(struct drm_i915_private *dev_priv);
void intel_uc_init_early(struct drm_i915_private *dev_priv);
void intel_uc_init_fw(struct drm_i915_private *dev_priv);
void intel_uc_fini_fw(struct drm_i915_private *dev_priv);
int intel_uc_init_hw(struct drm_i915_private *dev_priv);
void intel_uc_fini_hw(struct drm_i915_private *dev_priv);
int intel_guc_sample_forcewake(struct intel_guc *guc);
int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len);
static inline int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len)
{
return guc->send(guc, action, len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Oscar Mateo | 25 | 78.12% | 1 | 50.00% |
| Arkadiusz Hiler | 7 | 21.88% | 1 | 50.00% |
| Total | 32 | 100.00% | 2 | 100.00% |
/* intel_guc_loader.c */
int intel_guc_select_fw(struct intel_guc *guc);
int intel_guc_init_hw(struct intel_guc *guc);
int intel_guc_suspend(struct drm_i915_private *dev_priv);
int intel_guc_resume(struct drm_i915_private *dev_priv);
u32 intel_guc_wopcm_size(struct drm_i915_private *dev_priv);
/* i915_guc_submission.c */
int i915_guc_submission_init(struct drm_i915_private *dev_priv);
int i915_guc_submission_enable(struct drm_i915_private *dev_priv);
int i915_guc_wq_reserve(struct drm_i915_gem_request *rq);
void i915_guc_wq_unreserve(struct drm_i915_gem_request *request);
void i915_guc_submission_disable(struct drm_i915_private *dev_priv);
void i915_guc_submission_fini(struct drm_i915_private *dev_priv);
struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size);
/* intel_guc_log.c */
int intel_guc_log_create(struct intel_guc *guc);
void intel_guc_log_destroy(struct intel_guc *guc);
int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val);
void i915_guc_log_register(struct drm_i915_private *dev_priv);
void i915_guc_log_unregister(struct drm_i915_private *dev_priv);
static inline u32 guc_ggtt_offset(struct i915_vma *vma)
{
u32 offset = i915_ggtt_offset(vma);
GEM_BUG_ON(offset < GUC_WOPCM_TOP);
GEM_BUG_ON(range_overflows_t(u64, offset, vma->size, GUC_GGTT_TOP));
return offset;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wilson | 46 | 100.00% | 2 | 100.00% |
| Total | 46 | 100.00% | 2 | 100.00% |
/* intel_huc.c */
void intel_huc_select_fw(struct intel_huc *huc);
int intel_huc_init_hw(struct intel_huc *huc);
void intel_guc_auth_huc(struct drm_i915_private *dev_priv);
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alex Dai | 137 | 17.02% | 8 | 13.33% |
| Dave Gordon | 133 | 16.52% | 8 | 13.33% |
| Oscar Mateo | 103 | 12.80% | 5 | 8.33% |
| Michal Wajdeczko | 96 | 11.93% | 5 | 8.33% |
| Arkadiusz Hiler | 80 | 9.94% | 11 | 18.33% |
| Chris Wilson | 75 | 9.32% | 9 | 15.00% |
| Anusha Srivatsa | 72 | 8.94% | 4 | 6.67% |
| Akash Goel | 63 | 7.83% | 4 | 6.67% |
| Sagar Arun Kamble | 34 | 4.22% | 4 | 6.67% |
| Joonas Lahtinen | 8 | 0.99% | 1 | 1.67% |
| Tvrtko A. Ursulin | 4 | 0.50% | 1 | 1.67% |
| Total | 805 | 100.00% | 60 | 100.00% |
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