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amdgpu_irq.h revision 1.1 
      1 /*	$NetBSD: amdgpu_irq.h,v 1.1 2018/08/27 01:34:44 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2014 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  */
     25 
     26 #ifndef __AMDGPU_IRQ_H__
     27 #define __AMDGPU_IRQ_H__
     28 
     29 #include "amdgpu_ih.h"
     30 
     31 #define AMDGPU_MAX_IRQ_SRC_ID	0x100
     32 
     33 struct amdgpu_device;
     34 struct amdgpu_iv_entry;
     35 
     36 enum amdgpu_interrupt_state {
     37 	AMDGPU_IRQ_STATE_DISABLE,
     38 	AMDGPU_IRQ_STATE_ENABLE,
     39 };
     40 
     41 struct amdgpu_irq_src {
     42 	unsigned				num_types;
     43 	atomic_t				*enabled_types;
     44 	const struct amdgpu_irq_src_funcs	*funcs;
     45 	void *data;
     46 };
     47 
     48 /* provided by interrupt generating IP blocks */
     49 struct amdgpu_irq_src_funcs {
     50 	int (*set)(struct amdgpu_device *adev, struct amdgpu_irq_src *source,
     51 		   unsigned type, enum amdgpu_interrupt_state state);
     52 
     53 	int (*process)(struct amdgpu_device *adev,
     54 		       struct amdgpu_irq_src *source,
     55 		       struct amdgpu_iv_entry *entry);
     56 };
     57 
     58 struct amdgpu_irq {
     59 	bool				installed;
     60 	spinlock_t			lock;
     61 	/* interrupt sources */
     62 	struct amdgpu_irq_src		*sources[AMDGPU_MAX_IRQ_SRC_ID];
     63 
     64 	/* status, etc. */
     65 	bool				msi_enabled; /* msi enabled */
     66 
     67 	/* interrupt ring */
     68 	struct amdgpu_ih_ring		ih;
     69 	const struct amdgpu_ih_funcs	*ih_funcs;
     70 };
     71 
     72 void amdgpu_irq_preinstall(struct drm_device *dev);
     73 int amdgpu_irq_postinstall(struct drm_device *dev);
     74 void amdgpu_irq_uninstall(struct drm_device *dev);
     75 irqreturn_t amdgpu_irq_handler(int irq, void *arg);
     76 
     77 int amdgpu_irq_init(struct amdgpu_device *adev);
     78 void amdgpu_irq_fini(struct amdgpu_device *adev);
     79 int amdgpu_irq_add_id(struct amdgpu_device *adev, unsigned src_id,
     80 		      struct amdgpu_irq_src *source);
     81 void amdgpu_irq_dispatch(struct amdgpu_device *adev,
     82 			 struct amdgpu_iv_entry *entry);
     83 int amdgpu_irq_update(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
     84 		      unsigned type);
     85 int amdgpu_irq_get(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
     86 		   unsigned type);
     87 bool amdgpu_irq_get_delayed(struct amdgpu_device *adev,
     88 			    struct amdgpu_irq_src *src,
     89 			    unsigned type);
     90 int amdgpu_irq_put(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
     91 		   unsigned type);
     92 bool amdgpu_irq_enabled(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
     93 			unsigned type);
     94 
     95 #endif
     96