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_engine_class; 17 struct xe_gt; 18 struct xe_hw_engine; 19 struct xe_lrc; 20 struct xe_vm; 21 22 struct xe_lrc_snapshot { 23 struct xe_bo *lrc_bo; 24 void *lrc_snapshot; 25 unsigned long lrc_size, lrc_offset; 26 27 u32 context_desc; 28 u32 indirect_context_desc; 29 u32 head; 30 struct { 31 u32 internal; 32 u32 memory; 33 } tail; 34 u32 start_seqno; 35 u32 seqno; 36 u32 ctx_timestamp; 37 u32 ctx_job_timestamp; 38 }; 39 40 #define LRC_PPHWSP_SCRATCH_ADDR (0x34 * 4) 41 42 struct xe_lrc *xe_lrc_create(struct xe_hw_engine *hwe, struct xe_vm *vm, 43 u32 ring_size); 44 void xe_lrc_destroy(struct kref *ref); 45 46 /** 47 * xe_lrc_get - Get reference to the LRC 48 * @lrc: Logical Ring Context 49 * 50 * Increment reference count of @lrc 51 */ 52 static inline struct xe_lrc *xe_lrc_get(struct xe_lrc *lrc) 53 { 54 kref_get(&lrc->refcount); 55 return lrc; 56 } 57 58 /** 59 * xe_lrc_put - Put reference of the LRC 60 * @lrc: Logical Ring Context 61 * 62 * Decrement reference count of @lrc, call xe_lrc_destroy when 63 * reference count reaches 0. 64 */ 65 static inline void xe_lrc_put(struct xe_lrc *lrc) 66 { 67 kref_put(&lrc->refcount, xe_lrc_destroy); 68 } 69 70 size_t xe_gt_lrc_size(struct xe_gt *gt, enum xe_engine_class class); 71 u32 xe_lrc_pphwsp_offset(struct xe_lrc *lrc); 72 u32 xe_lrc_regs_offset(struct xe_lrc *lrc); 73 74 void xe_lrc_set_ring_tail(struct xe_lrc *lrc, u32 tail); 75 u32 xe_lrc_ring_tail(struct xe_lrc *lrc); 76 void xe_lrc_set_ring_head(struct xe_lrc *lrc, u32 head); 77 u32 xe_lrc_ring_head(struct xe_lrc *lrc); 78 u32 xe_lrc_ring_space(struct xe_lrc *lrc); 79 void xe_lrc_write_ring(struct xe_lrc *lrc, const void *data, size_t size); 80 81 u32 xe_lrc_indirect_ring_ggtt_addr(struct xe_lrc *lrc); 82 u32 xe_lrc_ggtt_addr(struct xe_lrc *lrc); 83 u32 *xe_lrc_regs(struct xe_lrc *lrc); 84 85 u32 xe_lrc_read_ctx_reg(struct xe_lrc *lrc, int reg_nr); 86 void xe_lrc_write_ctx_reg(struct xe_lrc *lrc, int reg_nr, u32 val); 87 88 u64 xe_lrc_descriptor(struct xe_lrc *lrc); 89 90 u32 xe_lrc_seqno_ggtt_addr(struct xe_lrc *lrc); 91 struct dma_fence *xe_lrc_alloc_seqno_fence(void); 92 void xe_lrc_free_seqno_fence(struct dma_fence *fence); 93 void xe_lrc_init_seqno_fence(struct xe_lrc *lrc, struct dma_fence *fence); 94 s32 xe_lrc_seqno(struct xe_lrc *lrc); 95 96 u32 xe_lrc_start_seqno_ggtt_addr(struct xe_lrc *lrc); 97 s32 xe_lrc_start_seqno(struct xe_lrc *lrc); 98 99 u32 xe_lrc_parallel_ggtt_addr(struct xe_lrc *lrc); 100 struct iosys_map xe_lrc_parallel_map(struct xe_lrc *lrc); 101 102 size_t xe_lrc_skip_size(struct xe_device *xe); 103 104 void xe_lrc_dump_default(struct drm_printer *p, 105 struct xe_gt *gt, 106 enum xe_engine_class); 107 108 void xe_lrc_emit_hwe_state_instructions(struct xe_exec_queue *q, struct xe_bb *bb); 109 110 struct xe_lrc_snapshot *xe_lrc_snapshot_capture(struct xe_lrc *lrc); 111 void xe_lrc_snapshot_capture_delayed(struct xe_lrc_snapshot *snapshot); 112 void xe_lrc_snapshot_print(struct xe_lrc_snapshot *snapshot, struct drm_printer *p); 113 void xe_lrc_snapshot_free(struct xe_lrc_snapshot *snapshot); 114 115 u32 xe_lrc_ctx_timestamp_ggtt_addr(struct xe_lrc *lrc); 116 u32 xe_lrc_ctx_timestamp(struct xe_lrc *lrc); 117 u32 xe_lrc_ctx_job_timestamp_ggtt_addr(struct xe_lrc *lrc); 118 u32 xe_lrc_ctx_job_timestamp(struct xe_lrc *lrc); 119 120 /** 121 * xe_lrc_update_timestamp - readout LRC timestamp and update cached value 122 * @lrc: logical ring context for this exec queue 123 * @old_ts: pointer where to save the previous timestamp 124 * 125 * Read the current timestamp for this LRC and update the cached value. The 126 * previous cached value is also returned in @old_ts so the caller can calculate 127 * the delta between 2 updates. Note that this is not intended to be called from 128 * any place, but just by the paths updating the drm client utilization. 129 * 130 * Returns the current LRC timestamp 131 */ 132 u32 xe_lrc_update_timestamp(struct xe_lrc *lrc, u32 *old_ts); 133 134 #endif 135