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 "soc15_ih_clientid.h" 29 #include "amdgpu_ih.h" 30 31 #define AMDGPU_MAX_IRQ_SRC_ID 0x100 32 #define AMDGPU_MAX_IRQ_CLIENT_ID 0x100 33 34 #define AMDGPU_IRQ_CLIENTID_LEGACY 0 35 #define AMDGPU_IRQ_CLIENTID_MAX SOC15_IH_CLIENTID_MAX 36 37 #define AMDGPU_IRQ_SRC_DATA_MAX_SIZE_DW 4 38 39 struct amdgpu_device; 40 41 enum amdgpu_interrupt_state { 42 AMDGPU_IRQ_STATE_DISABLE, 43 AMDGPU_IRQ_STATE_ENABLE, 44 }; 45 46 struct amdgpu_iv_entry { 47 struct amdgpu_ih_ring *ih; 48 unsigned client_id; 49 unsigned src_id; 50 unsigned ring_id; 51 unsigned vmid; 52 unsigned vmid_src; 53 uint64_t timestamp; 54 unsigned timestamp_src; 55 unsigned pasid; 56 unsigned pasid_src; 57 unsigned src_data[AMDGPU_IRQ_SRC_DATA_MAX_SIZE_DW]; 58 const uint32_t *iv_entry; 59 }; 60 61 struct amdgpu_irq_src { 62 unsigned num_types; 63 atomic_t *enabled_types; 64 const struct amdgpu_irq_src_funcs *funcs; 65 void *data; 66 }; 67 68 struct amdgpu_irq_client { 69 struct amdgpu_irq_src **sources; 70 }; 71 72 /* provided by interrupt generating IP blocks */ 73 struct amdgpu_irq_src_funcs { 74 int (*set)(struct amdgpu_device *adev, struct amdgpu_irq_src *source, 75 unsigned type, enum amdgpu_interrupt_state state); 76 77 int (*process)(struct amdgpu_device *adev, 78 struct amdgpu_irq_src *source, 79 struct amdgpu_iv_entry *entry); 80 }; 81 82 struct amdgpu_irq { 83 bool installed; 84 spinlock_t lock; 85 /* interrupt sources */ 86 struct amdgpu_irq_client client[AMDGPU_IRQ_CLIENTID_MAX]; 87 88 /* status, etc. */ 89 bool msi_enabled; /* msi enabled */ 90 91 /* interrupt rings */ 92 struct amdgpu_ih_ring ih, ih1, ih2, ih_soft; 93 const struct amdgpu_ih_funcs *ih_funcs; 94 struct work_struct ih1_work, ih2_work, ih_soft_work; 95 struct amdgpu_irq_src self_irq; 96 97 /* gen irq stuff */ 98 struct irq_domain *domain; /* GPU irq controller domain */ 99 unsigned virq[AMDGPU_MAX_IRQ_SRC_ID]; 100 uint32_t srbm_soft_reset; 101 }; 102 103 void amdgpu_irq_disable_all(struct amdgpu_device *adev); 104 irqreturn_t amdgpu_irq_handler(int irq, void *arg); 105 106 int amdgpu_irq_init(struct amdgpu_device *adev); 107 void amdgpu_irq_fini(struct amdgpu_device *adev); 108 int amdgpu_irq_add_id(struct amdgpu_device *adev, 109 unsigned client_id, unsigned src_id, 110 struct amdgpu_irq_src *source); 111 void amdgpu_irq_dispatch(struct amdgpu_device *adev, 112 struct amdgpu_ih_ring *ih); 113 void amdgpu_irq_delegate(struct amdgpu_device *adev, 114 struct amdgpu_iv_entry *entry, 115 unsigned int num_dw); 116 int amdgpu_irq_update(struct amdgpu_device *adev, struct amdgpu_irq_src *src, 117 unsigned type); 118 int amdgpu_irq_get(struct amdgpu_device *adev, struct amdgpu_irq_src *src, 119 unsigned type); 120 int amdgpu_irq_put(struct amdgpu_device *adev, struct amdgpu_irq_src *src, 121 unsigned type); 122 bool amdgpu_irq_enabled(struct amdgpu_device *adev, struct amdgpu_irq_src *src, 123 unsigned type); 124 void amdgpu_irq_gpu_reset_resume_helper(struct amdgpu_device *adev); 125 126 int amdgpu_irq_add_domain(struct amdgpu_device *adev); 127 void amdgpu_irq_remove_domain(struct amdgpu_device *adev); 128 unsigned amdgpu_irq_create_mapping(struct amdgpu_device *adev, unsigned src_id); 129 130 #endif 131