drivers/gpu/drm/i915/gvt/interrupt.h - linux - Git at Google

 /*
  * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
  *
  * 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.
  *
  * Authors:
  *    Kevin Tian <kevin.tian@intel.com>
  *    Zhi Wang <zhi.a.wang@intel.com>
  *
  * Contributors:
  *    Min he <min.he@intel.com>
  *
  */

 #ifndef _GVT_INTERRUPT_H_
 #define _GVT_INTERRUPT_H_

 enum intel_gvt_event_type {
 	RCS_MI_USER_INTERRUPT = 0,
 	RCS_DEBUG,
 	RCS_MMIO_SYNC_FLUSH,
 	RCS_CMD_STREAMER_ERR,
 	RCS_PIPE_CONTROL,
 	RCS_L3_PARITY_ERR,
 	RCS_WATCHDOG_EXCEEDED,
 	RCS_PAGE_DIRECTORY_FAULT,
 	RCS_AS_CONTEXT_SWITCH,
 	RCS_MONITOR_BUFF_HALF_FULL,

 	VCS_MI_USER_INTERRUPT,
 	VCS_MMIO_SYNC_FLUSH,
 	VCS_CMD_STREAMER_ERR,
 	VCS_MI_FLUSH_DW,
 	VCS_WATCHDOG_EXCEEDED,
 	VCS_PAGE_DIRECTORY_FAULT,
 	VCS_AS_CONTEXT_SWITCH,

 	VCS2_MI_USER_INTERRUPT,
 	VCS2_MI_FLUSH_DW,
 	VCS2_AS_CONTEXT_SWITCH,

 	BCS_MI_USER_INTERRUPT,
 	BCS_MMIO_SYNC_FLUSH,
 	BCS_CMD_STREAMER_ERR,
 	BCS_MI_FLUSH_DW,
 	BCS_PAGE_DIRECTORY_FAULT,
 	BCS_AS_CONTEXT_SWITCH,

 	VECS_MI_USER_INTERRUPT,
 	VECS_MI_FLUSH_DW,
 	VECS_AS_CONTEXT_SWITCH,

 	PIPE_A_FIFO_UNDERRUN,
 	PIPE_B_FIFO_UNDERRUN,
 	PIPE_A_CRC_ERR,
 	PIPE_B_CRC_ERR,
 	PIPE_A_CRC_DONE,
 	PIPE_B_CRC_DONE,
 	PIPE_A_ODD_FIELD,
 	PIPE_B_ODD_FIELD,
 	PIPE_A_EVEN_FIELD,
 	PIPE_B_EVEN_FIELD,
 	PIPE_A_LINE_COMPARE,
 	PIPE_B_LINE_COMPARE,
 	PIPE_C_LINE_COMPARE,
 	PIPE_A_VBLANK,
 	PIPE_B_VBLANK,
 	PIPE_C_VBLANK,
 	PIPE_A_VSYNC,
 	PIPE_B_VSYNC,
 	PIPE_C_VSYNC,
 	PRIMARY_A_FLIP_DONE,
 	PRIMARY_B_FLIP_DONE,
 	PRIMARY_C_FLIP_DONE,
 	SPRITE_A_FLIP_DONE,
 	SPRITE_B_FLIP_DONE,
 	SPRITE_C_FLIP_DONE,

 	PCU_THERMAL,
 	PCU_PCODE2DRIVER_MAILBOX,

 	DPST_PHASE_IN,
 	DPST_HISTOGRAM,
 	GSE,
 	DP_A_HOTPLUG,
 	AUX_CHANNEL_A,
 	PERF_COUNTER,
 	POISON,
 	GTT_FAULT,
 	ERROR_INTERRUPT_COMBINED,

 	FDI_RX_INTERRUPTS_TRANSCODER_A,
 	AUDIO_CP_CHANGE_TRANSCODER_A,
 	AUDIO_CP_REQUEST_TRANSCODER_A,
 	FDI_RX_INTERRUPTS_TRANSCODER_B,
 	AUDIO_CP_CHANGE_TRANSCODER_B,
 	AUDIO_CP_REQUEST_TRANSCODER_B,
 	FDI_RX_INTERRUPTS_TRANSCODER_C,
 	AUDIO_CP_CHANGE_TRANSCODER_C,
 	AUDIO_CP_REQUEST_TRANSCODER_C,
 	ERR_AND_DBG,
 	GMBUS,
 	SDVO_B_HOTPLUG,
 	CRT_HOTPLUG,
 	DP_B_HOTPLUG,
 	DP_C_HOTPLUG,
 	DP_D_HOTPLUG,
 	AUX_CHANNEL_B,
 	AUX_CHANNEL_C,
 	AUX_CHANNEL_D,
 	AUDIO_POWER_STATE_CHANGE_B,
 	AUDIO_POWER_STATE_CHANGE_C,
 	AUDIO_POWER_STATE_CHANGE_D,

 	INTEL_GVT_EVENT_RESERVED,
 	INTEL_GVT_EVENT_MAX,
 };

 struct intel_gvt_irq;
 struct intel_gvt;

 typedef void (*gvt_event_virt_handler_t)(struct intel_gvt_irq *irq,
 	enum intel_gvt_event_type event, struct intel_vgpu *vgpu);

 struct intel_gvt_irq_ops {
 	void (*init_irq)(struct intel_gvt_irq *irq);
 	void (*check_pending_irq)(struct intel_vgpu *vgpu);
 };

 /* the list of physical interrupt control register groups */
 enum intel_gvt_irq_type {
 	INTEL_GVT_IRQ_INFO_GT,
 	INTEL_GVT_IRQ_INFO_DPY,
 	INTEL_GVT_IRQ_INFO_PCH,
 	INTEL_GVT_IRQ_INFO_PM,

 	INTEL_GVT_IRQ_INFO_MASTER,
 	INTEL_GVT_IRQ_INFO_GT0,
 	INTEL_GVT_IRQ_INFO_GT1,
 	INTEL_GVT_IRQ_INFO_GT2,
 	INTEL_GVT_IRQ_INFO_GT3,
 	INTEL_GVT_IRQ_INFO_DE_PIPE_A,
 	INTEL_GVT_IRQ_INFO_DE_PIPE_B,
 	INTEL_GVT_IRQ_INFO_DE_PIPE_C,
 	INTEL_GVT_IRQ_INFO_DE_PORT,
 	INTEL_GVT_IRQ_INFO_DE_MISC,
 	INTEL_GVT_IRQ_INFO_AUD,
 	INTEL_GVT_IRQ_INFO_PCU,

 	INTEL_GVT_IRQ_INFO_MAX,
 };

 #define INTEL_GVT_IRQ_BITWIDTH	32

 /* device specific interrupt bit definitions */
 struct intel_gvt_irq_info {
 	char *name;
 	i915_reg_t reg_base;
 	enum intel_gvt_event_type bit_to_event[INTEL_GVT_IRQ_BITWIDTH];
 	unsigned long warned;
 	int group;
 	DECLARE_BITMAP(downstream_irq_bitmap, INTEL_GVT_IRQ_BITWIDTH);
 	bool has_upstream_irq;
 };

 /* per-event information */
 struct intel_gvt_event_info {
 	int bit;				/* map to register bit */
 	int policy;				/* forwarding policy */
 	struct intel_gvt_irq_info *info;	/* register info */
 	gvt_event_virt_handler_t v_handler;	/* for v_event */
 };

 struct intel_gvt_irq_map {
 	int up_irq_group;
 	int up_irq_bit;
 	int down_irq_group;
 	u32 down_irq_bitmask;
 };

 struct intel_gvt_vblank_timer {
 	struct hrtimer timer;
 	u64 period;
 };

 /* structure containing device specific IRQ state */
 struct intel_gvt_irq {
 	struct intel_gvt_irq_ops *ops;
 	struct intel_gvt_irq_info *info[INTEL_GVT_IRQ_INFO_MAX];
 	DECLARE_BITMAP(irq_info_bitmap, INTEL_GVT_IRQ_INFO_MAX);
 	struct intel_gvt_event_info events[INTEL_GVT_EVENT_MAX];
 	DECLARE_BITMAP(pending_events, INTEL_GVT_EVENT_MAX);
 	struct intel_gvt_irq_map *irq_map;
 	struct intel_gvt_vblank_timer vblank_timer;
 };

 int intel_gvt_init_irq(struct intel_gvt *gvt);
 void intel_gvt_clean_irq(struct intel_gvt *gvt);

 void intel_vgpu_trigger_virtual_event(struct intel_vgpu *vgpu,
 	enum intel_gvt_event_type event);

 int intel_vgpu_reg_iir_handler(struct intel_vgpu *vgpu, unsigned int reg,
 	void *p_data, unsigned int bytes);
 int intel_vgpu_reg_ier_handler(struct intel_vgpu *vgpu,
 	unsigned int reg, void *p_data, unsigned int bytes);
 int intel_vgpu_reg_master_irq_handler(struct intel_vgpu *vgpu,
 	unsigned int reg, void *p_data, unsigned int bytes);
 int intel_vgpu_reg_imr_handler(struct intel_vgpu *vgpu,
 	unsigned int reg, void *p_data, unsigned int bytes);

 int gvt_ring_id_to_pipe_control_notify_event(int ring_id);
 int gvt_ring_id_to_mi_flush_dw_event(int ring_id);
 int gvt_ring_id_to_mi_user_interrupt_event(int ring_id);

 #endif /* _GVT_INTERRUPT_H_ */
	/*
	* Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
	*
	* 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.
	*
	* Authors:
	* Kevin Tian <kevin.tian@intel.com>
	* Zhi Wang <zhi.a.wang@intel.com>
	*
	* Contributors:
	* Min he <min.he@intel.com>
	*
	*/

	#ifndef _GVT_INTERRUPT_H_
	#define _GVT_INTERRUPT_H_

	enum intel_gvt_event_type {
	RCS_MI_USER_INTERRUPT = 0,
	RCS_DEBUG,
	RCS_MMIO_SYNC_FLUSH,
	RCS_CMD_STREAMER_ERR,
	RCS_PIPE_CONTROL,
	RCS_L3_PARITY_ERR,
	RCS_WATCHDOG_EXCEEDED,
	RCS_PAGE_DIRECTORY_FAULT,
	RCS_AS_CONTEXT_SWITCH,
	RCS_MONITOR_BUFF_HALF_FULL,

	VCS_MI_USER_INTERRUPT,
	VCS_MMIO_SYNC_FLUSH,
	VCS_CMD_STREAMER_ERR,
	VCS_MI_FLUSH_DW,
	VCS_WATCHDOG_EXCEEDED,
	VCS_PAGE_DIRECTORY_FAULT,
	VCS_AS_CONTEXT_SWITCH,

	VCS2_MI_USER_INTERRUPT,
	VCS2_MI_FLUSH_DW,
	VCS2_AS_CONTEXT_SWITCH,

	BCS_MI_USER_INTERRUPT,
	BCS_MMIO_SYNC_FLUSH,
	BCS_CMD_STREAMER_ERR,
	BCS_MI_FLUSH_DW,
	BCS_PAGE_DIRECTORY_FAULT,
	BCS_AS_CONTEXT_SWITCH,

	VECS_MI_USER_INTERRUPT,
	VECS_MI_FLUSH_DW,
	VECS_AS_CONTEXT_SWITCH,

	PIPE_A_FIFO_UNDERRUN,
	PIPE_B_FIFO_UNDERRUN,
	PIPE_A_CRC_ERR,
	PIPE_B_CRC_ERR,
	PIPE_A_CRC_DONE,
	PIPE_B_CRC_DONE,
	PIPE_A_ODD_FIELD,
	PIPE_B_ODD_FIELD,
	PIPE_A_EVEN_FIELD,
	PIPE_B_EVEN_FIELD,
	PIPE_A_LINE_COMPARE,
	PIPE_B_LINE_COMPARE,
	PIPE_C_LINE_COMPARE,
	PIPE_A_VBLANK,
	PIPE_B_VBLANK,
	PIPE_C_VBLANK,
	PIPE_A_VSYNC,
	PIPE_B_VSYNC,
	PIPE_C_VSYNC,
	PRIMARY_A_FLIP_DONE,
	PRIMARY_B_FLIP_DONE,
	PRIMARY_C_FLIP_DONE,
	SPRITE_A_FLIP_DONE,
	SPRITE_B_FLIP_DONE,
	SPRITE_C_FLIP_DONE,

	PCU_THERMAL,
	PCU_PCODE2DRIVER_MAILBOX,

	DPST_PHASE_IN,
	DPST_HISTOGRAM,
	GSE,
	DP_A_HOTPLUG,
	AUX_CHANNEL_A,
	PERF_COUNTER,
	POISON,
	GTT_FAULT,
	ERROR_INTERRUPT_COMBINED,

	FDI_RX_INTERRUPTS_TRANSCODER_A,
	AUDIO_CP_CHANGE_TRANSCODER_A,
	AUDIO_CP_REQUEST_TRANSCODER_A,
	FDI_RX_INTERRUPTS_TRANSCODER_B,
	AUDIO_CP_CHANGE_TRANSCODER_B,
	AUDIO_CP_REQUEST_TRANSCODER_B,
	FDI_RX_INTERRUPTS_TRANSCODER_C,
	AUDIO_CP_CHANGE_TRANSCODER_C,
	AUDIO_CP_REQUEST_TRANSCODER_C,
	ERR_AND_DBG,
	GMBUS,
	SDVO_B_HOTPLUG,
	CRT_HOTPLUG,
	DP_B_HOTPLUG,
	DP_C_HOTPLUG,
	DP_D_HOTPLUG,
	AUX_CHANNEL_B,
	AUX_CHANNEL_C,
	AUX_CHANNEL_D,
	AUDIO_POWER_STATE_CHANGE_B,
	AUDIO_POWER_STATE_CHANGE_C,
	AUDIO_POWER_STATE_CHANGE_D,

	INTEL_GVT_EVENT_RESERVED,
	INTEL_GVT_EVENT_MAX,
	};

	struct intel_gvt_irq;
	struct intel_gvt;

	typedef void (gvt_event_virt_handler_t)(struct intel_gvt_irq irq,
	enum intel_gvt_event_type event, struct intel_vgpu *vgpu);

	struct intel_gvt_irq_ops {
	void (init_irq)(struct intel_gvt_irq irq);
	void (check_pending_irq)(struct intel_vgpu vgpu);
	};

	/* the list of physical interrupt control register groups */
	enum intel_gvt_irq_type {
	INTEL_GVT_IRQ_INFO_GT,
	INTEL_GVT_IRQ_INFO_DPY,
	INTEL_GVT_IRQ_INFO_PCH,
	INTEL_GVT_IRQ_INFO_PM,

	INTEL_GVT_IRQ_INFO_MASTER,
	INTEL_GVT_IRQ_INFO_GT0,
	INTEL_GVT_IRQ_INFO_GT1,
	INTEL_GVT_IRQ_INFO_GT2,
	INTEL_GVT_IRQ_INFO_GT3,
	INTEL_GVT_IRQ_INFO_DE_PIPE_A,
	INTEL_GVT_IRQ_INFO_DE_PIPE_B,
	INTEL_GVT_IRQ_INFO_DE_PIPE_C,
	INTEL_GVT_IRQ_INFO_DE_PORT,
	INTEL_GVT_IRQ_INFO_DE_MISC,
	INTEL_GVT_IRQ_INFO_AUD,
	INTEL_GVT_IRQ_INFO_PCU,

	INTEL_GVT_IRQ_INFO_MAX,
	};

	#define INTEL_GVT_IRQ_BITWIDTH 32

	/* device specific interrupt bit definitions */
	struct intel_gvt_irq_info {
	char *name;
	i915_reg_t reg_base;
	enum intel_gvt_event_type bit_to_event[INTEL_GVT_IRQ_BITWIDTH];
	unsigned long warned;
	int group;
	DECLARE_BITMAP(downstream_irq_bitmap, INTEL_GVT_IRQ_BITWIDTH);
	bool has_upstream_irq;
	};

	/* per-event information */
	struct intel_gvt_event_info {
	int bit; /* map to register bit */
	int policy; /* forwarding policy */
	struct intel_gvt_irq_info info; / register info */
	gvt_event_virt_handler_t v_handler; /* for v_event */
	};

	struct intel_gvt_irq_map {
	int up_irq_group;
	int up_irq_bit;
	int down_irq_group;
	u32 down_irq_bitmask;
	};

	struct intel_gvt_vblank_timer {
	struct hrtimer timer;
	u64 period;
	};

	/* structure containing device specific IRQ state */
	struct intel_gvt_irq {
	struct intel_gvt_irq_ops *ops;
	struct intel_gvt_irq_info *info[INTEL_GVT_IRQ_INFO_MAX];
	DECLARE_BITMAP(irq_info_bitmap, INTEL_GVT_IRQ_INFO_MAX);
	struct intel_gvt_event_info events[INTEL_GVT_EVENT_MAX];
	DECLARE_BITMAP(pending_events, INTEL_GVT_EVENT_MAX);
	struct intel_gvt_irq_map *irq_map;
	struct intel_gvt_vblank_timer vblank_timer;
	};

	int intel_gvt_init_irq(struct intel_gvt *gvt);
	void intel_gvt_clean_irq(struct intel_gvt *gvt);

	void intel_vgpu_trigger_virtual_event(struct intel_vgpu *vgpu,
	enum intel_gvt_event_type event);

	int intel_vgpu_reg_iir_handler(struct intel_vgpu *vgpu, unsigned int reg,
	void *p_data, unsigned int bytes);
	int intel_vgpu_reg_ier_handler(struct intel_vgpu *vgpu,
	unsigned int reg, void *p_data, unsigned int bytes);
	int intel_vgpu_reg_master_irq_handler(struct intel_vgpu *vgpu,
	unsigned int reg, void *p_data, unsigned int bytes);
	int intel_vgpu_reg_imr_handler(struct intel_vgpu *vgpu,
	unsigned int reg, void *p_data, unsigned int bytes);

	int gvt_ring_id_to_pipe_control_notify_event(int ring_id);
	int gvt_ring_id_to_mi_flush_dw_event(int ring_id);
	int gvt_ring_id_to_mi_user_interrupt_event(int ring_id);

	#endif /* _GVT_INTERRUPT_H_ */