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linux/drivers/gpu/drm/i915/intel_guc_fwif.h
Dave Gordon 0a31afbc0f drm/i915/guc: rework guc_add_workqueue_item() 
Mostly little optimisations and future-proofing against code breakage.
For instance, if the driver is correctly following the submission
protocol, the "out of space" condition is impossible, so the previous
runtime WARN_ON() is promoted to a GEM_BUG_ON() for a more dramatic
effect in development and less impact in end-user systems.

Similarly we can make alignment checking more stringent and replace
other WARN_ON() conditions that don't relate to the runtime hardware
state with either BUILD_BUG_ON() for compile-time-detectable issues, or
GEM_BUG_ON() for logical "can't happen" errors.

With those changes, we can convert it to void, as suggested by Chris
Wilson, and update the calling code appropriately.

v2:
    Note that we're now putting the request seqno in the "fence_id"
    field of each GuC-work-item, in case it turns up somewhere useful
    (e.g. in a GuC log) [Tvrtko Ursulin].

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
2016-05-23 14:21:53 +01:00

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/*
* 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_GUC_FWIF_H
#define _INTEL_GUC_FWIF_H
/*
* This file is partially autogenerated, although currently with some manual
* fixups afterwards. In future, it should be entirely autogenerated, in order
* to ensure that the definitions herein remain in sync with those used by the
* GuC's own firmware.
*
* EDITING THIS FILE IS THEREFORE NOT RECOMMENDED - YOUR CHANGES MAY BE LOST.
*/
#define GFXCORE_FAMILY_GEN9 12
#define GFXCORE_FAMILY_UNKNOWN 0x7fffffff
#define GUC_CTX_PRIORITY_KMD_HIGH 0
#define GUC_CTX_PRIORITY_HIGH 1
#define GUC_CTX_PRIORITY_KMD_NORMAL 2
#define GUC_CTX_PRIORITY_NORMAL 3
#define GUC_CTX_PRIORITY_NUM 4
#define GUC_MAX_GPU_CONTEXTS 1024
#define GUC_INVALID_CTX_ID GUC_MAX_GPU_CONTEXTS
#define GUC_RENDER_ENGINE 0
#define GUC_VIDEO_ENGINE 1
#define GUC_BLITTER_ENGINE 2
#define GUC_VIDEOENHANCE_ENGINE 3
#define GUC_VIDEO_ENGINE2 4
#define GUC_MAX_ENGINES_NUM (GUC_VIDEO_ENGINE2 + 1)
/* Work queue item header definitions */
#define WQ_STATUS_ACTIVE 1
#define WQ_STATUS_SUSPENDED 2
#define WQ_STATUS_CMD_ERROR 3
#define WQ_STATUS_ENGINE_ID_NOT_USED 4
#define WQ_STATUS_SUSPENDED_FROM_RESET 5
#define WQ_TYPE_SHIFT 0
#define WQ_TYPE_BATCH_BUF (0x1 << WQ_TYPE_SHIFT)
#define WQ_TYPE_PSEUDO (0x2 << WQ_TYPE_SHIFT)
#define WQ_TYPE_INORDER (0x3 << WQ_TYPE_SHIFT)
#define WQ_TARGET_SHIFT 10
#define WQ_LEN_SHIFT 16
#define WQ_NO_WCFLUSH_WAIT (1 << 27)
#define WQ_PRESENT_WORKLOAD (1 << 28)
#define WQ_WORKLOAD_SHIFT 29
#define WQ_WORKLOAD_GENERAL (0 << WQ_WORKLOAD_SHIFT)
#define WQ_WORKLOAD_GPGPU (1 << WQ_WORKLOAD_SHIFT)
#define WQ_WORKLOAD_TOUCH (2 << WQ_WORKLOAD_SHIFT)
#define WQ_RING_TAIL_SHIFT 20
#define WQ_RING_TAIL_MAX 0x7FF /* 2^11 QWords */
#define WQ_RING_TAIL_MASK (WQ_RING_TAIL_MAX << WQ_RING_TAIL_SHIFT)
#define GUC_DOORBELL_ENABLED 1
#define GUC_DOORBELL_DISABLED 0
#define GUC_CTX_DESC_ATTR_ACTIVE (1 << 0)
#define GUC_CTX_DESC_ATTR_PENDING_DB (1 << 1)
#define GUC_CTX_DESC_ATTR_KERNEL (1 << 2)
#define GUC_CTX_DESC_ATTR_PREEMPT (1 << 3)
#define GUC_CTX_DESC_ATTR_RESET (1 << 4)
#define GUC_CTX_DESC_ATTR_WQLOCKED (1 << 5)
#define GUC_CTX_DESC_ATTR_PCH (1 << 6)
#define GUC_CTX_DESC_ATTR_TERMINATED (1 << 7)
/* The guc control data is 10 DWORDs */
#define GUC_CTL_CTXINFO 0
#define GUC_CTL_CTXNUM_IN16_SHIFT 0
#define GUC_CTL_BASE_ADDR_SHIFT 12
#define GUC_CTL_ARAT_HIGH 1
#define GUC_CTL_ARAT_LOW 2
#define GUC_CTL_DEVICE_INFO 3
#define GUC_CTL_GTTYPE_SHIFT 0
#define GUC_CTL_COREFAMILY_SHIFT 7
#define GUC_CTL_LOG_PARAMS 4
#define GUC_LOG_VALID (1 << 0)
#define GUC_LOG_NOTIFY_ON_HALF_FULL (1 << 1)
#define GUC_LOG_ALLOC_IN_MEGABYTE (1 << 3)
#define GUC_LOG_CRASH_PAGES 1
#define GUC_LOG_CRASH_SHIFT 4
#define GUC_LOG_DPC_PAGES 3
#define GUC_LOG_DPC_SHIFT 6
#define GUC_LOG_ISR_PAGES 3
#define GUC_LOG_ISR_SHIFT 9
#define GUC_LOG_BUF_ADDR_SHIFT 12
#define GUC_CTL_PAGE_FAULT_CONTROL 5
#define GUC_CTL_WA 6
#define GUC_CTL_WA_UK_BY_DRIVER (1 << 3)
#define GUC_CTL_FEATURE 7
#define GUC_CTL_VCS2_ENABLED (1 << 0)
#define GUC_CTL_KERNEL_SUBMISSIONS (1 << 1)
#define GUC_CTL_FEATURE2 (1 << 2)
#define GUC_CTL_POWER_GATING (1 << 3)
#define GUC_CTL_DISABLE_SCHEDULER (1 << 4)
#define GUC_CTL_PREEMPTION_LOG (1 << 5)
#define GUC_CTL_ENABLE_SLPC (1 << 7)
#define GUC_CTL_RESET_ON_PREMPT_FAILURE (1 << 8)
#define GUC_CTL_DEBUG 8
#define GUC_LOG_VERBOSITY_SHIFT 0
#define GUC_LOG_VERBOSITY_LOW (0 << GUC_LOG_VERBOSITY_SHIFT)
#define GUC_LOG_VERBOSITY_MED (1 << GUC_LOG_VERBOSITY_SHIFT)
#define GUC_LOG_VERBOSITY_HIGH (2 << GUC_LOG_VERBOSITY_SHIFT)
#define GUC_LOG_VERBOSITY_ULTRA (3 << GUC_LOG_VERBOSITY_SHIFT)
/* Verbosity range-check limits, without the shift */
#define GUC_LOG_VERBOSITY_MIN 0
#define GUC_LOG_VERBOSITY_MAX 3
#define GUC_LOG_VERBOSITY_MASK 0x0000000f
#define GUC_LOG_DESTINATION_MASK (3 << 4)
#define GUC_LOG_DISABLED (1 << 6)
#define GUC_PROFILE_ENABLED (1 << 7)
#define GUC_WQ_TRACK_ENABLED (1 << 8)
#define GUC_ADS_ENABLED (1 << 9)
#define GUC_DEBUG_RESERVED (1 << 10)
#define GUC_ADS_ADDR_SHIFT 11
#define GUC_ADS_ADDR_MASK 0xfffff800
#define GUC_CTL_RSRVD 9
#define GUC_CTL_MAX_DWORDS (SOFT_SCRATCH_COUNT - 2) /* [1..14] */
/**
* DOC: GuC Firmware Layout
*
* The GuC firmware layout looks like this:
*
* +-------------------------------+
* | guc_css_header |
* | contains major/minor version |
* +-------------------------------+
* | uCode |
* +-------------------------------+
* | RSA signature |
* +-------------------------------+
* | modulus key |
* +-------------------------------+
* | exponent val |
* +-------------------------------+
*
* The firmware may or may not have modulus key and exponent data. The header,
* uCode and RSA signature are must-have components that will be used by driver.
* Length of each components, which is all in dwords, can be found in header.
* In the case that modulus and exponent are not present in fw, a.k.a truncated
* image, the length value still appears in header.
*
* Driver will do some basic fw size validation based on the following rules:
*
* 1. Header, uCode and RSA are must-have components.
* 2. All firmware components, if they present, are in the sequence illustrated
* in the layout table above.
* 3. Length info of each component can be found in header, in dwords.
* 4. Modulus and exponent key are not required by driver. They may not appear
* in fw. So driver will load a truncated firmware in this case.
*/
struct guc_css_header {
uint32_t module_type;
/* header_size includes all non-uCode bits, including css_header, rsa
* key, modulus key and exponent data. */
uint32_t header_size_dw;
uint32_t header_version;
uint32_t module_id;
uint32_t module_vendor;
union {
struct {
uint8_t day;
uint8_t month;
uint16_t year;
};
uint32_t date;
};
uint32_t size_dw; /* uCode plus header_size_dw */
uint32_t key_size_dw;
uint32_t modulus_size_dw;
uint32_t exponent_size_dw;
union {
struct {
uint8_t hour;
uint8_t min;
uint16_t sec;
};
uint32_t time;
};
char username[8];
char buildnumber[12];
uint32_t device_id;
uint32_t guc_sw_version;
uint32_t prod_preprod_fw;
uint32_t reserved[12];
uint32_t header_info;
} __packed;
struct guc_doorbell_info {
u32 db_status;
u32 cookie;
u32 reserved[14];
} __packed;
union guc_doorbell_qw {
struct {
u32 db_status;
u32 cookie;
};
u64 value_qw;
} __packed;
#define GUC_MAX_DOORBELLS 256
#define GUC_INVALID_DOORBELL_ID (GUC_MAX_DOORBELLS)
#define GUC_DB_SIZE (PAGE_SIZE)
#define GUC_WQ_SIZE (PAGE_SIZE * 2)
/* Work item for submitting workloads into work queue of GuC. */
struct guc_wq_item {
u32 header;
u32 context_desc;
u32 ring_tail;
u32 fence_id;
} __packed;
struct guc_process_desc {
u32 context_id;
u64 db_base_addr;
u32 head;
u32 tail;
u32 error_offset;
u64 wq_base_addr;
u32 wq_size_bytes;
u32 wq_status;
u32 engine_presence;
u32 priority;
u32 reserved[30];
} __packed;
/* engine id and context id is packed into guc_execlist_context.context_id*/
#define GUC_ELC_CTXID_OFFSET 0
#define GUC_ELC_ENGINE_OFFSET 29
/* The execlist context including software and HW information */
struct guc_execlist_context {
u32 context_desc;
u32 context_id;
u32 ring_status;
u32 ring_lcra;
u32 ring_begin;
u32 ring_end;
u32 ring_next_free_location;
u32 ring_current_tail_pointer_value;
u8 engine_state_submit_value;
u8 engine_state_wait_value;
u16 pagefault_count;
u16 engine_submit_queue_count;
} __packed;
/*Context descriptor for communicating between uKernel and Driver*/
struct guc_context_desc {
u32 sched_common_area;
u32 context_id;
u32 pas_id;
u8 engines_used;
u64 db_trigger_cpu;
u32 db_trigger_uk;
u64 db_trigger_phy;
u16 db_id;
struct guc_execlist_context lrc[GUC_MAX_ENGINES_NUM];
u8 attribute;
u32 priority;
u32 wq_sampled_tail_offset;
u32 wq_total_submit_enqueues;
u32 process_desc;
u32 wq_addr;
u32 wq_size;
u32 engine_presence;
u8 engine_suspended;
u8 reserved0[3];
u64 reserved1[1];
u64 desc_private;
} __packed;
#define GUC_FORCEWAKE_RENDER (1 << 0)
#define GUC_FORCEWAKE_MEDIA (1 << 1)
#define GUC_POWER_UNSPECIFIED 0
#define GUC_POWER_D0 1
#define GUC_POWER_D1 2
#define GUC_POWER_D2 3
#define GUC_POWER_D3 4
/* Scheduling policy settings */
/* Reset engine upon preempt failure */
#define POLICY_RESET_ENGINE (1<<0)
/* Preempt to idle on quantum expiry */
#define POLICY_PREEMPT_TO_IDLE (1<<1)
#define POLICY_MAX_NUM_WI 15
struct guc_policy {
/* Time for one workload to execute. (in micro seconds) */
u32 execution_quantum;
u32 reserved1;
/* Time to wait for a preemption request to completed before issuing a
* reset. (in micro seconds). */
u32 preemption_time;
/* How much time to allow to run after the first fault is observed.
* Then preempt afterwards. (in micro seconds) */
u32 fault_time;
u32 policy_flags;
u32 reserved[2];
} __packed;
struct guc_policies {
struct guc_policy policy[GUC_CTX_PRIORITY_NUM][GUC_MAX_ENGINES_NUM];
/* In micro seconds. How much time to allow before DPC processing is
* called back via interrupt (to prevent DPC queue drain starving).
* Typically 1000s of micro seconds (example only, not granularity). */
u32 dpc_promote_time;
/* Must be set to take these new values. */
u32 is_valid;
/* Max number of WIs to process per call. A large value may keep CS
* idle. */
u32 max_num_work_items;
u32 reserved[19];
} __packed;
/* GuC MMIO reg state struct */
#define GUC_REGSET_FLAGS_NONE 0x0
#define GUC_REGSET_POWERCYCLE 0x1
#define GUC_REGSET_MASKED 0x2
#define GUC_REGSET_ENGINERESET 0x4
#define GUC_REGSET_SAVE_DEFAULT_VALUE 0x8
#define GUC_REGSET_SAVE_CURRENT_VALUE 0x10
#define GUC_REGSET_MAX_REGISTERS 25
#define GUC_MMIO_WHITE_LIST_START 0x24d0
#define GUC_MMIO_WHITE_LIST_MAX 12
#define GUC_S3_SAVE_SPACE_PAGES 10
struct guc_mmio_regset {
struct __packed {
u32 offset;
u32 value;
u32 flags;
} registers[GUC_REGSET_MAX_REGISTERS];
u32 values_valid;
u32 number_of_registers;
} __packed;
struct guc_mmio_reg_state {
struct guc_mmio_regset global_reg;
struct guc_mmio_regset engine_reg[GUC_MAX_ENGINES_NUM];
/* MMIO registers that are set as non privileged */
struct __packed {
u32 mmio_start;
u32 offsets[GUC_MMIO_WHITE_LIST_MAX];
u32 count;
} mmio_white_list[GUC_MAX_ENGINES_NUM];
} __packed;
/* GuC Additional Data Struct */
struct guc_ads {
u32 reg_state_addr;
u32 reg_state_buffer;
u32 golden_context_lrca;
u32 scheduler_policies;
u32 reserved0[3];
u32 eng_state_size[GUC_MAX_ENGINES_NUM];
u32 reserved2[4];
} __packed;
/* This Action will be programmed in C180 - SOFT_SCRATCH_O_REG */
enum host2guc_action {
HOST2GUC_ACTION_DEFAULT = 0x0,
HOST2GUC_ACTION_SAMPLE_FORCEWAKE = 0x6,
HOST2GUC_ACTION_ALLOCATE_DOORBELL = 0x10,
HOST2GUC_ACTION_DEALLOCATE_DOORBELL = 0x20,
HOST2GUC_ACTION_ENTER_S_STATE = 0x501,
HOST2GUC_ACTION_EXIT_S_STATE = 0x502,
HOST2GUC_ACTION_SLPC_REQUEST = 0x3003,
HOST2GUC_ACTION_LIMIT
};
/*
* The GuC sends its response to a command by overwriting the
* command in SS0. The response is distinguishable from a command
* by the fact that all the MASK bits are set. The remaining bits
* give more detail.
*/
#define GUC2HOST_RESPONSE_MASK ((u32)0xF0000000)
#define GUC2HOST_IS_RESPONSE(x) ((u32)(x) >= GUC2HOST_RESPONSE_MASK)
#define GUC2HOST_STATUS(x) (GUC2HOST_RESPONSE_MASK | (x))
/* GUC will return status back to SOFT_SCRATCH_O_REG */
enum guc2host_status {
GUC2HOST_STATUS_SUCCESS = GUC2HOST_STATUS(0x0),
GUC2HOST_STATUS_ALLOCATE_DOORBELL_FAIL = GUC2HOST_STATUS(0x10),
GUC2HOST_STATUS_DEALLOCATE_DOORBELL_FAIL = GUC2HOST_STATUS(0x20),
GUC2HOST_STATUS_GENERIC_FAIL = GUC2HOST_STATUS(0x0000F000)
};
#endif
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