amd_shared.h

/*
 * Copyright 2015 Advanced Micro Devices, Inc.
 *
 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 __AMD_SHARED_H__
#define __AMD_SHARED_H__

#include <drm/amd_asic_type.h>
#include <drm/drm_print.h>


#define AMD_MAX_USEC_TIMEOUT		1000000  /* 1000 ms */
struct amdgpu_ip_block;


/*
 * Chip flags
 */
enum amd_chip_flags {
	AMD_ASIC_MASK = 0x0000ffffUL,
	AMD_FLAGS_MASK  = 0xffff0000UL,
	AMD_IS_MOBILITY = 0x00010000UL,
	AMD_IS_APU      = 0x00020000UL,
	AMD_IS_PX       = 0x00040000UL,
	AMD_EXP_HW_SUPPORT = 0x00080000UL,
};

enum amd_apu_flags {
	AMD_APU_IS_RAVEN = 0x00000001UL,
	AMD_APU_IS_RAVEN2 = 0x00000002UL,
	AMD_APU_IS_PICASSO = 0x00000004UL,
	AMD_APU_IS_RENOIR = 0x00000008UL,
	AMD_APU_IS_GREEN_SARDINE = 0x00000010UL,
	AMD_APU_IS_VANGOGH = 0x00000020UL,
	AMD_APU_IS_CYAN_SKILLFISH2 = 0x00000040UL,
};

/**
* DOC: IP Blocks
*
* GPUs are composed of IP (intellectual property) blocks. These
* IP blocks provide various functionalities: display, graphics,
* video decode, etc. The IP blocks that comprise a particular GPU
* are listed in the GPU's respective SoC file. amdgpu_device.c
* acquires the list of IP blocks for the GPU in use on initialization.
* It can then operate on this list to perform standard driver operations
* such as: init, fini, suspend, resume, etc.
*
*
* IP block implementations are named using the following convention:
* <functionality>_v<version> (E.g.: gfx_v6_0).
*/

/**
* enum amd_ip_block_type - Used to classify IP blocks by functionality.
*
* @AMD_IP_BLOCK_TYPE_COMMON: GPU Family
* @AMD_IP_BLOCK_TYPE_GMC: Graphics Memory Controller
* @AMD_IP_BLOCK_TYPE_IH: Interrupt Handler
* @AMD_IP_BLOCK_TYPE_SMC: System Management Controller
* @AMD_IP_BLOCK_TYPE_PSP: Platform Security Processor
* @AMD_IP_BLOCK_TYPE_DCE: Display and Compositing Engine
* @AMD_IP_BLOCK_TYPE_GFX: Graphics and Compute Engine
* @AMD_IP_BLOCK_TYPE_SDMA: System DMA Engine
* @AMD_IP_BLOCK_TYPE_UVD: Unified Video Decoder
* @AMD_IP_BLOCK_TYPE_VCE: Video Compression Engine
* @AMD_IP_BLOCK_TYPE_ACP: Audio Co-Processor
* @AMD_IP_BLOCK_TYPE_VCN: Video Core/Codec Next
* @AMD_IP_BLOCK_TYPE_MES: Micro-Engine Scheduler
* @AMD_IP_BLOCK_TYPE_JPEG: JPEG Engine
* @AMD_IP_BLOCK_TYPE_VPE: Video Processing Engine
* @AMD_IP_BLOCK_TYPE_UMSCH_MM: User Mode Scheduler for Multimedia
* @AMD_IP_BLOCK_TYPE_ISP: Image Signal Processor
* @AMD_IP_BLOCK_TYPE_NUM: Total number of IP block types
*/
enum amd_ip_block_type {
	AMD_IP_BLOCK_TYPE_COMMON,
	AMD_IP_BLOCK_TYPE_GMC,
	AMD_IP_BLOCK_TYPE_IH,
	AMD_IP_BLOCK_TYPE_SMC,
	AMD_IP_BLOCK_TYPE_PSP,
	AMD_IP_BLOCK_TYPE_DCE,
	AMD_IP_BLOCK_TYPE_GFX,
	AMD_IP_BLOCK_TYPE_SDMA,
	AMD_IP_BLOCK_TYPE_UVD,
	AMD_IP_BLOCK_TYPE_VCE,
	AMD_IP_BLOCK_TYPE_ACP,
	AMD_IP_BLOCK_TYPE_VCN,
	AMD_IP_BLOCK_TYPE_MES,
	AMD_IP_BLOCK_TYPE_JPEG,
	AMD_IP_BLOCK_TYPE_VPE,
	AMD_IP_BLOCK_TYPE_UMSCH_MM,
	AMD_IP_BLOCK_TYPE_ISP,
	AMD_IP_BLOCK_TYPE_NUM,
};

enum amd_clockgating_state {
	AMD_CG_STATE_GATE = 0,
	AMD_CG_STATE_UNGATE,
};


enum amd_powergating_state {
	AMD_PG_STATE_GATE = 0,
	AMD_PG_STATE_UNGATE,
};


/* CG flags */
#define AMD_CG_SUPPORT_GFX_MGCG			(1ULL << 0)
#define AMD_CG_SUPPORT_GFX_MGLS			(1ULL << 1)
#define AMD_CG_SUPPORT_GFX_CGCG			(1ULL << 2)
#define AMD_CG_SUPPORT_GFX_CGLS			(1ULL << 3)
#define AMD_CG_SUPPORT_GFX_CGTS			(1ULL << 4)
#define AMD_CG_SUPPORT_GFX_CGTS_LS		(1ULL << 5)
#define AMD_CG_SUPPORT_GFX_CP_LS		(1ULL << 6)
#define AMD_CG_SUPPORT_GFX_RLC_LS		(1ULL << 7)
#define AMD_CG_SUPPORT_MC_LS			(1ULL << 8)
#define AMD_CG_SUPPORT_MC_MGCG			(1ULL << 9)
#define AMD_CG_SUPPORT_SDMA_LS			(1ULL << 10)
#define AMD_CG_SUPPORT_SDMA_MGCG		(1ULL << 11)
#define AMD_CG_SUPPORT_BIF_LS			(1ULL << 12)
#define AMD_CG_SUPPORT_UVD_MGCG			(1ULL << 13)
#define AMD_CG_SUPPORT_VCE_MGCG			(1ULL << 14)
#define AMD_CG_SUPPORT_HDP_LS			(1ULL << 15)
#define AMD_CG_SUPPORT_HDP_MGCG			(1ULL << 16)
#define AMD_CG_SUPPORT_ROM_MGCG			(1ULL << 17)
#define AMD_CG_SUPPORT_DRM_LS			(1ULL << 18)
#define AMD_CG_SUPPORT_BIF_MGCG			(1ULL << 19)
#define AMD_CG_SUPPORT_GFX_3D_CGCG		(1ULL << 20)
#define AMD_CG_SUPPORT_GFX_3D_CGLS		(1ULL << 21)
#define AMD_CG_SUPPORT_DRM_MGCG			(1ULL << 22)
#define AMD_CG_SUPPORT_DF_MGCG			(1ULL << 23)
#define AMD_CG_SUPPORT_VCN_MGCG			(1ULL << 24)
#define AMD_CG_SUPPORT_HDP_DS			(1ULL << 25)
#define AMD_CG_SUPPORT_HDP_SD			(1ULL << 26)
#define AMD_CG_SUPPORT_IH_CG			(1ULL << 27)
#define AMD_CG_SUPPORT_ATHUB_LS			(1ULL << 28)
#define AMD_CG_SUPPORT_ATHUB_MGCG		(1ULL << 29)
#define AMD_CG_SUPPORT_JPEG_MGCG		(1ULL << 30)
#define AMD_CG_SUPPORT_GFX_FGCG			(1ULL << 31)
#define AMD_CG_SUPPORT_REPEATER_FGCG		(1ULL << 32)
#define AMD_CG_SUPPORT_GFX_PERF_CLK		(1ULL << 33)
/* PG flags */
#define AMD_PG_SUPPORT_GFX_PG			(1 << 0)
#define AMD_PG_SUPPORT_GFX_SMG			(1 << 1)
#define AMD_PG_SUPPORT_GFX_DMG			(1 << 2)
#define AMD_PG_SUPPORT_UVD			(1 << 3)
#define AMD_PG_SUPPORT_VCE			(1 << 4)
#define AMD_PG_SUPPORT_CP			(1 << 5)
#define AMD_PG_SUPPORT_GDS			(1 << 6)
#define AMD_PG_SUPPORT_RLC_SMU_HS		(1 << 7)
#define AMD_PG_SUPPORT_SDMA			(1 << 8)
#define AMD_PG_SUPPORT_ACP			(1 << 9)
#define AMD_PG_SUPPORT_SAMU			(1 << 10)
#define AMD_PG_SUPPORT_GFX_QUICK_MG		(1 << 11)
#define AMD_PG_SUPPORT_GFX_PIPELINE		(1 << 12)
#define AMD_PG_SUPPORT_MMHUB			(1 << 13)
#define AMD_PG_SUPPORT_VCN			(1 << 14)
#define AMD_PG_SUPPORT_VCN_DPG			(1 << 15)
#define AMD_PG_SUPPORT_ATHUB			(1 << 16)
#define AMD_PG_SUPPORT_JPEG			(1 << 17)
#define AMD_PG_SUPPORT_IH_SRAM_PG		(1 << 18)
#define AMD_PG_SUPPORT_JPEG_DPG		(1 << 19)

/**
 * enum PP_FEATURE_MASK - Used to mask power play features.
 *
 * @PP_SCLK_DPM_MASK: Dynamic adjustment of the system (graphics) clock.
 * @PP_MCLK_DPM_MASK: Dynamic adjustment of the memory clock.
 * @PP_PCIE_DPM_MASK: Dynamic adjustment of PCIE clocks and lanes.
 * @PP_SCLK_DEEP_SLEEP_MASK: System (graphics) clock deep sleep.
 * @PP_POWER_CONTAINMENT_MASK: Power containment.
 * @PP_UVD_HANDSHAKE_MASK: Unified video decoder handshake.
 * @PP_SMC_VOLTAGE_CONTROL_MASK: Dynamic voltage control.
 * @PP_VBI_TIME_SUPPORT_MASK: Vertical blank interval support.
 * @PP_ULV_MASK: Ultra low voltage.
 * @PP_ENABLE_GFX_CG_THRU_SMU: SMU control of GFX engine clockgating.
 * @PP_CLOCK_STRETCH_MASK: Clock stretching.
 * @PP_OD_FUZZY_FAN_CONTROL_MASK: Overdrive fuzzy fan control.
 * @PP_SOCCLK_DPM_MASK: Dynamic adjustment of the SoC clock.
 * @PP_DCEFCLK_DPM_MASK: Dynamic adjustment of the Display Controller Engine Fabric clock.
 * @PP_OVERDRIVE_MASK: Over- and under-clocking support.
 * @PP_GFXOFF_MASK: Dynamic graphics engine power control.
 * @PP_ACG_MASK: Adaptive clock generator.
 * @PP_STUTTER_MODE: Stutter mode.
 * @PP_AVFS_MASK: Adaptive voltage and frequency scaling.
 * @PP_GFX_DCS_MASK: GFX Async DCS.
 *
 * To override these settings on boot, append amdgpu.ppfeaturemask=<mask> to
 * the kernel's command line parameters. This is usually done through a system's
 * boot loader (E.g. GRUB). If manually loading the driver, pass
 * ppfeaturemask=<mask> as a modprobe parameter.
 */
enum PP_FEATURE_MASK {
	PP_SCLK_DPM_MASK = 0x1,
	PP_MCLK_DPM_MASK = 0x2,
	PP_PCIE_DPM_MASK = 0x4,
	PP_SCLK_DEEP_SLEEP_MASK = 0x8,
	PP_POWER_CONTAINMENT_MASK = 0x10,
	PP_UVD_HANDSHAKE_MASK = 0x20,
	PP_SMC_VOLTAGE_CONTROL_MASK = 0x40,
	PP_VBI_TIME_SUPPORT_MASK = 0x80,
	PP_ULV_MASK = 0x100,
	PP_ENABLE_GFX_CG_THRU_SMU = 0x200,
	PP_CLOCK_STRETCH_MASK = 0x400,
	PP_OD_FUZZY_FAN_CONTROL_MASK = 0x800,
	PP_SOCCLK_DPM_MASK = 0x1000,
	PP_DCEFCLK_DPM_MASK = 0x2000,
	PP_OVERDRIVE_MASK = 0x4000,
	PP_GFXOFF_MASK = 0x8000,
	PP_ACG_MASK = 0x10000,
	PP_STUTTER_MODE = 0x20000,
	PP_AVFS_MASK = 0x40000,
	PP_GFX_DCS_MASK = 0x80000,
};

enum amd_harvest_ip_mask {
    AMD_HARVEST_IP_VCN_MASK = 0x1,
    AMD_HARVEST_IP_JPEG_MASK = 0x2,
    AMD_HARVEST_IP_DMU_MASK = 0x4,
};

enum DC_FEATURE_MASK {
	//Default value can be found at "uint amdgpu_dc_feature_mask"
	DC_FBC_MASK = (1 << 0), //0x1, disabled by default
	DC_MULTI_MON_PP_MCLK_SWITCH_MASK = (1 << 1), //0x2, enabled by default
	DC_DISABLE_FRACTIONAL_PWM_MASK = (1 << 2), //0x4, disabled by default
	DC_PSR_MASK = (1 << 3), //0x8, disabled by default for dcn < 3.1
	DC_EDP_NO_POWER_SEQUENCING = (1 << 4), //0x10, disabled by default
	DC_DISABLE_LTTPR_DP1_4A = (1 << 5), //0x20, disabled by default
	DC_DISABLE_LTTPR_DP2_0 = (1 << 6), //0x40, disabled by default
	DC_PSR_ALLOW_SMU_OPT = (1 << 7), //0x80, disabled by default
	DC_PSR_ALLOW_MULTI_DISP_OPT = (1 << 8), //0x100, disabled by default
	DC_REPLAY_MASK = (1 << 9), //0x200, disabled by default for dcn < 3.1.4
};

/**
 * enum DC_DEBUG_MASK - Bits that are useful for debugging the Display Core IP
 */
enum DC_DEBUG_MASK {
	/**
	 * @DC_DISABLE_PIPE_SPLIT: If set, disable pipe-splitting
	 */
	DC_DISABLE_PIPE_SPLIT = 0x1,

	/**
	 * @DC_DISABLE_STUTTER: If set, disable memory stutter mode
	 */
	DC_DISABLE_STUTTER = 0x2,

	/**
	 * @DC_DISABLE_DSC: If set, disable display stream compression
	 */
	DC_DISABLE_DSC = 0x4,

	/**
	 * @DC_DISABLE_CLOCK_GATING: If set, disable clock gating optimizations
	 */
	DC_DISABLE_CLOCK_GATING = 0x8,

	/**
	 * @DC_DISABLE_PSR: If set, disable Panel self refresh v1 and PSR-SU
	 */
	DC_DISABLE_PSR = 0x10,

	/**
	 * @DC_FORCE_SUBVP_MCLK_SWITCH: If set, force mclk switch in subvp, even
	 * if mclk switch in vblank is possible
	 */
	DC_FORCE_SUBVP_MCLK_SWITCH = 0x20,

	/**
	 * @DC_DISABLE_MPO: If set, disable multi-plane offloading
	 */
	DC_DISABLE_MPO = 0x40,

	/**
	 * @DC_ENABLE_DPIA_TRACE: If set, enable trace logging for DPIA
	 */
	DC_ENABLE_DPIA_TRACE = 0x80,

	/**
	 * @DC_ENABLE_DML2: If set, force usage of DML2, even if the DCN version
	 * does not default to it.
	 */
	DC_ENABLE_DML2 = 0x100,

	/**
	 * @DC_DISABLE_PSR_SU: If set, disable PSR SU
	 */
	DC_DISABLE_PSR_SU = 0x200,

	/**
	 * @DC_DISABLE_REPLAY: If set, disable Panel Replay
	 */
	DC_DISABLE_REPLAY = 0x400,

	/**
	 * @DC_DISABLE_IPS: If set, disable all Idle Power States, all the time.
	 * If more than one IPS debug bit is set, the lowest bit takes
	 * precedence. For example, if DC_FORCE_IPS_ENABLE and
	 * DC_DISABLE_IPS_DYNAMIC are set, then DC_DISABLE_IPS_DYNAMIC takes
	 * precedence.
	 */
	DC_DISABLE_IPS = 0x800,

	/**
	 * @DC_DISABLE_IPS_DYNAMIC: If set, disable all IPS, all the time,
	 * *except* when driver goes into suspend.
	 */
	DC_DISABLE_IPS_DYNAMIC = 0x1000,

	/**
	 * @DC_DISABLE_IPS2_DYNAMIC: If set, disable IPS2 (IPS1 allowed) if
	 * there is an enabled display. Otherwise, enable all IPS.
	 */
	DC_DISABLE_IPS2_DYNAMIC = 0x2000,

	/**
	 * @DC_FORCE_IPS_ENABLE: If set, force enable all IPS, all the time.
	 */
	DC_FORCE_IPS_ENABLE = 0x4000,
	/**
	 * @DC_DISABLE_ACPI_EDID: If set, don't attempt to fetch EDID for
	 * eDP display from ACPI _DDC method.
	 */
	DC_DISABLE_ACPI_EDID = 0x8000,

	/**
	 * @DC_DISABLE_HDMI_CEC: If set, disable HDMI-CEC feature in amdgpu driver.
	 */
	DC_DISABLE_HDMI_CEC = 0x10000,

	/**
	 * @DC_DISABLE_SUBVP_FAMS: If set, disable DCN Sub-Viewport & Firmware Assisted
	 * Memory Clock Switching (FAMS) feature in amdgpu driver.
	 */
	DC_DISABLE_SUBVP_FAMS = 0x20000,
	/**
	 * @DC_DISABLE_CUSTOM_BRIGHTNESS_CURVE: If set, disable support for custom brightness curves
	 */
	DC_DISABLE_CUSTOM_BRIGHTNESS_CURVE = 0x40000,

	/**
	 * @DC_HDCP_LC_FORCE_FW_ENABLE: If set, use HDCP Locality Check FW
	 * path regardless of reported HW capabilities.
	 */
	DC_HDCP_LC_FORCE_FW_ENABLE = 0x80000,

	/**
	 * @DC_HDCP_LC_ENABLE_SW_FALLBACK: If set, upon HDCP Locality Check FW
	 * path failure, retry using legacy SW path.
	 */
	DC_HDCP_LC_ENABLE_SW_FALLBACK = 0x100000,

	/**
	 * @DC_SKIP_DETECTION_LT: If set, skip detection link training
	 */
	DC_SKIP_DETECTION_LT = 0x200000,
};

enum amd_dpm_forced_level;

/**
 * struct amd_ip_funcs - general hooks for managing amdgpu IP Blocks
 * @name: Name of IP block
 * @early_init: sets up early driver state (pre sw_init),
 *              does not configure hw - Optional
 * @late_init: sets up late driver/hw state (post hw_init) - Optional
 * @sw_init: sets up driver state, does not configure hw
 * @sw_fini: tears down driver state, does not configure hw
 * @early_fini: tears down stuff before dev detached from driver
 * @hw_init: sets up the hw state
 * @hw_fini: tears down the hw state
 * @late_fini: final cleanup
 * @prepare_suspend: handle IP specific changes to prepare for suspend
 *                   (such as allocating any required memory)
 * @suspend: handles IP specific hw/sw changes for suspend
 * @resume: handles IP specific hw/sw changes for resume
 * @complete: handles IP specific changes after resume
 * @is_idle: returns current IP block idle status
 * @wait_for_idle: poll for idle
 * @check_soft_reset: check soft reset the IP block
 * @pre_soft_reset: pre soft reset the IP block
 * @soft_reset: soft reset the IP block
 * @post_soft_reset: post soft reset the IP block
 * @set_clockgating_state: enable/disable cg for the IP block
 * @set_powergating_state: enable/disable pg for the IP block
 * @get_clockgating_state: get current clockgating status
 * @dump_ip_state: dump the IP state of the ASIC during a gpu hang
 * @print_ip_state: print the IP state in devcoredump for each IP of the ASIC
 *
 * These hooks provide an interface for controlling the operational state
 * of IP blocks. After acquiring a list of IP blocks for the GPU in use,
 * the driver can make chip-wide state changes by walking this list and
 * making calls to hooks from each IP block. This list is ordered to ensure
 * that the driver initializes the IP blocks in a safe sequence.
 */
struct amd_ip_funcs {
	char *name;
	int (*early_init)(struct amdgpu_ip_block *ip_block);
	int (*late_init)(struct amdgpu_ip_block *ip_block);
	int (*sw_init)(struct amdgpu_ip_block *ip_block);
	int (*sw_fini)(struct amdgpu_ip_block *ip_block);
	int (*early_fini)(struct amdgpu_ip_block *ip_block);
	int (*hw_init)(struct amdgpu_ip_block *ip_block);
	int (*hw_fini)(struct amdgpu_ip_block *ip_block);
	void (*late_fini)(struct amdgpu_ip_block *ip_block);
	int (*prepare_suspend)(struct amdgpu_ip_block *ip_block);
	int (*suspend)(struct amdgpu_ip_block *ip_block);
	int (*resume)(struct amdgpu_ip_block *ip_block);
	void (*complete)(struct amdgpu_ip_block *ip_block);
	bool (*is_idle)(struct amdgpu_ip_block *ip_block);
	int (*wait_for_idle)(struct amdgpu_ip_block *ip_block);
	bool (*check_soft_reset)(struct amdgpu_ip_block *ip_block);
	int (*pre_soft_reset)(struct amdgpu_ip_block *ip_block);
	int (*soft_reset)(struct amdgpu_ip_block *ip_block);
	int (*post_soft_reset)(struct amdgpu_ip_block *ip_block);
	int (*set_clockgating_state)(struct amdgpu_ip_block *ip_block,
				     enum amd_clockgating_state state);
	int (*set_powergating_state)(struct amdgpu_ip_block *ip_block,
				     enum amd_powergating_state state);
	void (*get_clockgating_state)(struct amdgpu_ip_block *ip_block, u64 *flags);
	void (*dump_ip_state)(struct amdgpu_ip_block *ip_block);
	void (*print_ip_state)(struct amdgpu_ip_block *ip_block, struct drm_printer *p);
};


#endif /* __AMD_SHARED_H__ */