drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23
  24 #ifndef __AMDGPU_IRQ_H__
  25 #define __AMDGPU_IRQ_H__
  26
  27 #include <linux/irqdomain.h>
  28 #include "amdgpu_ih.h"
  29
  30 #define AMDGPU_MAX_IRQ_SRC_ID   0x100
  31 #define AMDGPU_MAX_IRQ_CLIENT_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 struct amdgpu_irq_client {
  49         struct amdgpu_irq_src **sources;
  50 };
  51
  52 /* provided by interrupt generating IP blocks */
  53 struct amdgpu_irq_src_funcs {
  54         int (*set)(struct amdgpu_device *adev, struct amdgpu_irq_src *source,
  55                    unsigned type, enum amdgpu_interrupt_state state);
  56
  57         int (*process)(struct amdgpu_device *adev,
  58                        struct amdgpu_irq_src *source,
  59                        struct amdgpu_iv_entry *entry);
  60 };
  61
  62 struct amdgpu_irq {
  63         bool                            installed;
  64         spinlock_t                      lock;
  65         /* interrupt sources */
  66         struct amdgpu_irq_client        client[AMDGPU_IH_CLIENTID_MAX];
  67
  68         /* status, etc. */
  69         bool                            msi_enabled; /* msi enabled */
  70
  71         /* interrupt ring */
  72         struct amdgpu_ih_ring           ih;
  73         const struct amdgpu_ih_funcs    *ih_funcs;
  74
  75         /* gen irq stuff */
  76         struct irq_domain               *domain; /* GPU irq controller domain */
  77         unsigned                        virq[AMDGPU_MAX_IRQ_SRC_ID];
  78         uint32_t                        srbm_soft_reset;
  79 };
  80
  81 void amdgpu_irq_preinstall(struct drm_device *dev);
  82 int amdgpu_irq_postinstall(struct drm_device *dev);
  83 void amdgpu_irq_uninstall(struct drm_device *dev);
  84 irqreturn_t amdgpu_irq_handler(int irq, void *arg);
  85
  86 int amdgpu_irq_init(struct amdgpu_device *adev);
  87 void amdgpu_irq_fini(struct amdgpu_device *adev);
  88 int amdgpu_irq_add_id(struct amdgpu_device *adev,
  89                       unsigned client_id, unsigned src_id,
  90                       struct amdgpu_irq_src *source);
  91 void amdgpu_irq_dispatch(struct amdgpu_device *adev,
  92                          struct amdgpu_iv_entry *entry);
  93 int amdgpu_irq_update(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
  94                       unsigned type);
  95 int amdgpu_irq_get(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
  96                    unsigned type);
  97 int amdgpu_irq_put(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
  98                    unsigned type);
  99 bool amdgpu_irq_enabled(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
 100                         unsigned type);
 101 void amdgpu_irq_gpu_reset_resume_helper(struct amdgpu_device *adev);
 102
 103 int amdgpu_irq_add_domain(struct amdgpu_device *adev);
 104 void amdgpu_irq_remove_domain(struct amdgpu_device *adev);
 105 unsigned amdgpu_irq_create_mapping(struct amdgpu_device *adev, unsigned src_id);
 106
 107 #endif