drivers/gpu/drm/i915/intel_guc_fwif.h - kernel/msm-4.19 - Gitiles

 /*
  * 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_MAX_GPU_CONTEXTS		1024
 #define	GUC_INVALID_CTX_ID		GUC_MAX_GPU_CONTEXTS

 /* 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_MASK		(0x7FF << 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_CTL_RSRVD			9

 #define GUC_CTL_MAX_DWORDS		(GUC_CTL_RSRVD + 1)

 /**
  * 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[I915_NUM_RINGS];

 	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

 /* 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
	/*
	* 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_MAX_GPU_CONTEXTS 1024
	#define GUC_INVALID_CTX_ID GUC_MAX_GPU_CONTEXTS

	/* 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_MASK (0x7FF << 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_CTL_RSRVD 9

	#define GUC_CTL_MAX_DWORDS (GUC_CTL_RSRVD + 1)

	/**
	* 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[I915_NUM_RINGS];

	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

	/* 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