1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2021 Intel Corporation 4 */ 5 #ifndef _XE_LRC_H_ 6 #define _XE_LRC_H_ 7 8 #include <linux/types.h> 9 10 #include "xe_lrc_types.h" 11 12 struct drm_printer; 13 struct xe_bb; 14 struct xe_device; 15 struct xe_exec_queue; 16 enum xe_multi_queue_priority; 17 enum xe_engine_class; 18 struct xe_gt; 19 struct xe_hw_engine; 20 struct xe_lrc; 21 struct xe_vm; 22 23 struct xe_lrc_snapshot { 24 struct xe_bo *lrc_bo; 25 void *lrc_snapshot; 26 unsigned long lrc_size, lrc_offset; 27 unsigned long replay_size, replay_offset; 28 29 u32 context_desc; 30 u32 ring_addr; 31 u32 indirect_context_desc; 32 u32 head; 33 u32 start; 34 struct { 35 u32 internal; 36 u32 memory; 37 } tail; 38 u32 start_seqno; 39 u32 seqno; 40 u32 ctx_timestamp; 41 u32 ctx_job_timestamp; 42 }; 43 44 #define LRC_PPHWSP_FLUSH_INVAL_SCRATCH_ADDR (0x34 * 4) 45 #define LRC_PPHWSP_PXP_INVAL_SCRATCH_ADDR (0x40 * 4) 46 47 #define LRC_WA_BB_SIZE SZ_4K 48 49 #define XE_LRC_CREATE_RUNALONE BIT(0) 50 #define XE_LRC_CREATE_PXP BIT(1) 51 #define XE_LRC_CREATE_USER_CTX BIT(2) 52 53 struct xe_lrc *xe_lrc_create(struct xe_hw_engine *hwe, struct xe_vm *vm, 54 void *replay_state, u32 ring_size, u16 msix_vec, u32 flags); 55 void xe_lrc_destroy(struct kref *ref); 56 57 /** 58 * xe_lrc_get - Get reference to the LRC 59 * @lrc: Logical Ring Context 60 * 61 * Increment reference count of @lrc 62 */ 63 static inline struct xe_lrc *xe_lrc_get(struct xe_lrc *lrc) 64 { 65 kref_get(&lrc->refcount); 66 return lrc; 67 } 68 69 /** 70 * xe_lrc_put - Put reference of the LRC 71 * @lrc: Logical Ring Context 72 * 73 * Decrement reference count of @lrc, call xe_lrc_destroy when 74 * reference count reaches 0. 75 */ 76 static inline void xe_lrc_put(struct xe_lrc *lrc) 77 { 78 kref_put(&lrc->refcount, xe_lrc_destroy); 79 } 80 81 /** 82 * xe_lrc_ring_size() - Xe LRC ring size 83 * 84 * Return: Size of LRC ring buffer 85 */ 86 static inline size_t xe_lrc_ring_size(void) 87 { 88 return SZ_16K; 89 } 90 91 size_t xe_gt_lrc_hang_replay_size(struct xe_gt *gt, enum xe_engine_class class); 92 size_t xe_gt_lrc_size(struct xe_gt *gt, enum xe_engine_class class); 93 u32 xe_lrc_pphwsp_offset(struct xe_lrc *lrc); 94 u32 xe_lrc_regs_offset(struct xe_lrc *lrc); 95 96 void xe_lrc_set_ring_tail(struct xe_lrc *lrc, u32 tail); 97 u32 xe_lrc_ring_tail(struct xe_lrc *lrc); 98 void xe_lrc_set_ring_head(struct xe_lrc *lrc, u32 head); 99 u32 xe_lrc_ring_head(struct xe_lrc *lrc); 100 u32 xe_lrc_ring_space(struct xe_lrc *lrc); 101 void xe_lrc_write_ring(struct xe_lrc *lrc, const void *data, size_t size); 102 103 bool xe_lrc_ring_is_idle(struct xe_lrc *lrc); 104 105 u32 xe_lrc_indirect_ring_ggtt_addr(struct xe_lrc *lrc); 106 u32 xe_lrc_ggtt_addr(struct xe_lrc *lrc); 107 u32 *xe_lrc_regs(struct xe_lrc *lrc); 108 void xe_lrc_update_hwctx_regs_with_address(struct xe_lrc *lrc); 109 void xe_default_lrc_update_memirq_regs_with_address(struct xe_hw_engine *hwe); 110 void xe_lrc_update_memirq_regs_with_address(struct xe_lrc *lrc, struct xe_hw_engine *hwe, 111 u32 *regs); 112 113 u32 xe_lrc_read_ctx_reg(struct xe_lrc *lrc, int reg_nr); 114 void xe_lrc_write_ctx_reg(struct xe_lrc *lrc, int reg_nr, u32 val); 115 116 u64 xe_lrc_descriptor(struct xe_lrc *lrc); 117 118 u32 xe_lrc_seqno_ggtt_addr(struct xe_lrc *lrc); 119 struct dma_fence *xe_lrc_alloc_seqno_fence(void); 120 void xe_lrc_free_seqno_fence(struct dma_fence *fence); 121 void xe_lrc_init_seqno_fence(struct xe_lrc *lrc, struct dma_fence *fence); 122 s32 xe_lrc_seqno(struct xe_lrc *lrc); 123 124 u32 xe_lrc_start_seqno_ggtt_addr(struct xe_lrc *lrc); 125 s32 xe_lrc_start_seqno(struct xe_lrc *lrc); 126 127 u32 xe_lrc_parallel_ggtt_addr(struct xe_lrc *lrc); 128 struct iosys_map xe_lrc_parallel_map(struct xe_lrc *lrc); 129 130 size_t xe_lrc_reg_size(struct xe_device *xe); 131 size_t xe_lrc_skip_size(struct xe_device *xe); 132 133 void xe_lrc_dump_default(struct drm_printer *p, 134 struct xe_gt *gt, 135 enum xe_engine_class); 136 137 u32 *xe_lrc_emit_hwe_state_instructions(struct xe_exec_queue *q, u32 *cs); 138 139 void xe_lrc_set_multi_queue_priority(struct xe_lrc *lrc, enum xe_multi_queue_priority priority); 140 141 struct xe_lrc_snapshot *xe_lrc_snapshot_capture(struct xe_lrc *lrc); 142 void xe_lrc_snapshot_capture_delayed(struct xe_lrc_snapshot *snapshot); 143 void xe_lrc_snapshot_print(struct xe_lrc_snapshot *snapshot, struct drm_printer *p); 144 void xe_lrc_snapshot_free(struct xe_lrc_snapshot *snapshot); 145 146 u32 xe_lrc_ctx_timestamp_ggtt_addr(struct xe_lrc *lrc); 147 u32 xe_lrc_ctx_timestamp_udw_ggtt_addr(struct xe_lrc *lrc); 148 u32 xe_lrc_ctx_job_timestamp_ggtt_addr(struct xe_lrc *lrc); 149 u32 xe_lrc_ctx_job_timestamp(struct xe_lrc *lrc); 150 int xe_lrc_setup_wa_bb_with_scratch(struct xe_lrc *lrc, struct xe_hw_engine *hwe, 151 u32 *scratch); 152 153 /** 154 * xe_lrc_update_timestamp - readout LRC timestamp and update cached value 155 * @lrc: logical ring context for this exec queue 156 * @old_ts: pointer where to save the previous timestamp 157 * 158 * Read the current timestamp for this LRC and update the cached value. The 159 * previous cached value is also returned in @old_ts so the caller can calculate 160 * the delta between 2 updates. Note that this is not intended to be called from 161 * any place, but just by the paths updating the drm client utilization. 162 * 163 * Returns the current LRC timestamp 164 */ 165 u64 xe_lrc_update_timestamp(struct xe_lrc *lrc, u64 *old_ts); 166 167 u64 xe_lrc_timestamp(struct xe_lrc *lrc); 168 169 #endif 170