1 /* 2 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. 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 (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 * 23 * Authors: 24 * Kevin Tian <kevin.tian@intel.com> 25 * Zhi Wang <zhi.a.wang@intel.com> 26 * 27 * Contributors: 28 * Min he <min.he@intel.com> 29 * 30 */ 31 32 #ifndef _GVT_INTERRUPT_H_ 33 #define _GVT_INTERRUPT_H_ 34 35 #include <linux/hrtimer.h> 36 #include <linux/kernel.h> 37 38 #include "i915_reg.h" 39 40 enum intel_gvt_event_type { 41 RCS_MI_USER_INTERRUPT = 0, 42 RCS_DEBUG, 43 RCS_MMIO_SYNC_FLUSH, 44 RCS_CMD_STREAMER_ERR, 45 RCS_PIPE_CONTROL, 46 RCS_L3_PARITY_ERR, 47 RCS_WATCHDOG_EXCEEDED, 48 RCS_PAGE_DIRECTORY_FAULT, 49 RCS_AS_CONTEXT_SWITCH, 50 RCS_MONITOR_BUFF_HALF_FULL, 51 52 VCS_MI_USER_INTERRUPT, 53 VCS_MMIO_SYNC_FLUSH, 54 VCS_CMD_STREAMER_ERR, 55 VCS_MI_FLUSH_DW, 56 VCS_WATCHDOG_EXCEEDED, 57 VCS_PAGE_DIRECTORY_FAULT, 58 VCS_AS_CONTEXT_SWITCH, 59 60 VCS2_MI_USER_INTERRUPT, 61 VCS2_MI_FLUSH_DW, 62 VCS2_AS_CONTEXT_SWITCH, 63 64 BCS_MI_USER_INTERRUPT, 65 BCS_MMIO_SYNC_FLUSH, 66 BCS_CMD_STREAMER_ERR, 67 BCS_MI_FLUSH_DW, 68 BCS_PAGE_DIRECTORY_FAULT, 69 BCS_AS_CONTEXT_SWITCH, 70 71 VECS_MI_USER_INTERRUPT, 72 VECS_MI_FLUSH_DW, 73 VECS_AS_CONTEXT_SWITCH, 74 75 PIPE_A_FIFO_UNDERRUN, 76 PIPE_B_FIFO_UNDERRUN, 77 PIPE_A_CRC_ERR, 78 PIPE_B_CRC_ERR, 79 PIPE_A_CRC_DONE, 80 PIPE_B_CRC_DONE, 81 PIPE_A_ODD_FIELD, 82 PIPE_B_ODD_FIELD, 83 PIPE_A_EVEN_FIELD, 84 PIPE_B_EVEN_FIELD, 85 PIPE_A_LINE_COMPARE, 86 PIPE_B_LINE_COMPARE, 87 PIPE_C_LINE_COMPARE, 88 PIPE_A_VBLANK, 89 PIPE_B_VBLANK, 90 PIPE_C_VBLANK, 91 PIPE_A_VSYNC, 92 PIPE_B_VSYNC, 93 PIPE_C_VSYNC, 94 PRIMARY_A_FLIP_DONE, 95 PRIMARY_B_FLIP_DONE, 96 PRIMARY_C_FLIP_DONE, 97 SPRITE_A_FLIP_DONE, 98 SPRITE_B_FLIP_DONE, 99 SPRITE_C_FLIP_DONE, 100 101 PCU_THERMAL, 102 PCU_PCODE2DRIVER_MAILBOX, 103 104 DPST_PHASE_IN, 105 DPST_HISTOGRAM, 106 GSE, 107 DP_A_HOTPLUG, 108 AUX_CHANNEL_A, 109 PERF_COUNTER, 110 POISON, 111 GTT_FAULT, 112 ERROR_INTERRUPT_COMBINED, 113 114 FDI_RX_INTERRUPTS_TRANSCODER_A, 115 AUDIO_CP_CHANGE_TRANSCODER_A, 116 AUDIO_CP_REQUEST_TRANSCODER_A, 117 FDI_RX_INTERRUPTS_TRANSCODER_B, 118 AUDIO_CP_CHANGE_TRANSCODER_B, 119 AUDIO_CP_REQUEST_TRANSCODER_B, 120 FDI_RX_INTERRUPTS_TRANSCODER_C, 121 AUDIO_CP_CHANGE_TRANSCODER_C, 122 AUDIO_CP_REQUEST_TRANSCODER_C, 123 ERR_AND_DBG, 124 GMBUS, 125 SDVO_B_HOTPLUG, 126 CRT_HOTPLUG, 127 DP_B_HOTPLUG, 128 DP_C_HOTPLUG, 129 DP_D_HOTPLUG, 130 AUX_CHANNEL_B, 131 AUX_CHANNEL_C, 132 AUX_CHANNEL_D, 133 AUDIO_POWER_STATE_CHANGE_B, 134 AUDIO_POWER_STATE_CHANGE_C, 135 AUDIO_POWER_STATE_CHANGE_D, 136 137 INTEL_GVT_EVENT_RESERVED, 138 INTEL_GVT_EVENT_MAX, 139 }; 140 141 struct intel_gvt_irq; 142 struct intel_gvt; 143 struct intel_vgpu; 144 145 typedef void (*gvt_event_virt_handler_t)(struct intel_gvt_irq *irq, 146 enum intel_gvt_event_type event, struct intel_vgpu *vgpu); 147 148 struct intel_gvt_irq_ops { 149 void (*init_irq)(struct intel_gvt_irq *irq); 150 void (*check_pending_irq)(struct intel_vgpu *vgpu); 151 }; 152 153 /* the list of physical interrupt control register groups */ 154 enum intel_gvt_irq_type { 155 INTEL_GVT_IRQ_INFO_GT, 156 INTEL_GVT_IRQ_INFO_DPY, 157 INTEL_GVT_IRQ_INFO_PCH, 158 INTEL_GVT_IRQ_INFO_PM, 159 160 INTEL_GVT_IRQ_INFO_MASTER, 161 INTEL_GVT_IRQ_INFO_GT0, 162 INTEL_GVT_IRQ_INFO_GT1, 163 INTEL_GVT_IRQ_INFO_GT2, 164 INTEL_GVT_IRQ_INFO_GT3, 165 INTEL_GVT_IRQ_INFO_DE_PIPE_A, 166 INTEL_GVT_IRQ_INFO_DE_PIPE_B, 167 INTEL_GVT_IRQ_INFO_DE_PIPE_C, 168 INTEL_GVT_IRQ_INFO_DE_PORT, 169 INTEL_GVT_IRQ_INFO_DE_MISC, 170 INTEL_GVT_IRQ_INFO_AUD, 171 INTEL_GVT_IRQ_INFO_PCU, 172 173 INTEL_GVT_IRQ_INFO_MAX, 174 }; 175 176 #define INTEL_GVT_IRQ_BITWIDTH 32 177 178 /* device specific interrupt bit definitions */ 179 struct intel_gvt_irq_info { 180 char *name; 181 i915_reg_t reg_base; 182 enum intel_gvt_event_type bit_to_event[INTEL_GVT_IRQ_BITWIDTH]; 183 unsigned long warned; 184 int group; 185 DECLARE_BITMAP(downstream_irq_bitmap, INTEL_GVT_IRQ_BITWIDTH); 186 bool has_upstream_irq; 187 }; 188 189 /* per-event information */ 190 struct intel_gvt_event_info { 191 int bit; /* map to register bit */ 192 int policy; /* forwarding policy */ 193 struct intel_gvt_irq_info *info; /* register info */ 194 gvt_event_virt_handler_t v_handler; /* for v_event */ 195 }; 196 197 struct intel_gvt_irq_map { 198 int up_irq_group; 199 int up_irq_bit; 200 int down_irq_group; 201 u32 down_irq_bitmask; 202 }; 203 204 /* structure containing device specific IRQ state */ 205 struct intel_gvt_irq { 206 struct intel_gvt_irq_ops *ops; 207 struct intel_gvt_irq_info *info[INTEL_GVT_IRQ_INFO_MAX]; 208 DECLARE_BITMAP(irq_info_bitmap, INTEL_GVT_IRQ_INFO_MAX); 209 struct intel_gvt_event_info events[INTEL_GVT_EVENT_MAX]; 210 DECLARE_BITMAP(pending_events, INTEL_GVT_EVENT_MAX); 211 struct intel_gvt_irq_map *irq_map; 212 }; 213 214 int intel_gvt_init_irq(struct intel_gvt *gvt); 215 216 void intel_vgpu_trigger_virtual_event(struct intel_vgpu *vgpu, 217 enum intel_gvt_event_type event); 218 219 int intel_vgpu_reg_iir_handler(struct intel_vgpu *vgpu, unsigned int reg, 220 void *p_data, unsigned int bytes); 221 int intel_vgpu_reg_ier_handler(struct intel_vgpu *vgpu, 222 unsigned int reg, void *p_data, unsigned int bytes); 223 int intel_vgpu_reg_master_irq_handler(struct intel_vgpu *vgpu, 224 unsigned int reg, void *p_data, unsigned int bytes); 225 int intel_vgpu_reg_imr_handler(struct intel_vgpu *vgpu, 226 unsigned int reg, void *p_data, unsigned int bytes); 227 228 int gvt_ring_id_to_pipe_control_notify_event(int ring_id); 229 int gvt_ring_id_to_mi_flush_dw_event(int ring_id); 230 int gvt_ring_id_to_mi_user_interrupt_event(int ring_id); 231 232 #endif /* _GVT_INTERRUPT_H_ */ 233