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 ring_addr; 29 u32 indirect_context_desc; 30 u32 head; 31 u32 start; 32 struct { 33 u32 internal; 34 u32 memory; 35 } tail; 36 u32 start_seqno; 37 u32 seqno; 38 u32 ctx_timestamp; 39 u32 ctx_job_timestamp; 40 }; 41 42 #define LRC_PPHWSP_SCRATCH_ADDR (0x34 * 4) 43 44 struct xe_lrc *xe_lrc_create(struct xe_hw_engine *hwe, struct xe_vm *vm, 45 u32 ring_size, u16 msix_vec); 46 void xe_lrc_destroy(struct kref *ref); 47 48 /** 49 * xe_lrc_get - Get reference to the LRC 50 * @lrc: Logical Ring Context 51 * 52 * Increment reference count of @lrc 53 */ 54 static inline struct xe_lrc *xe_lrc_get(struct xe_lrc *lrc) 55 { 56 kref_get(&lrc->refcount); 57 return lrc; 58 } 59 60 /** 61 * xe_lrc_put - Put reference of the LRC 62 * @lrc: Logical Ring Context 63 * 64 * Decrement reference count of @lrc, call xe_lrc_destroy when 65 * reference count reaches 0. 66 */ 67 static inline void xe_lrc_put(struct xe_lrc *lrc) 68 { 69 kref_put(&lrc->refcount, xe_lrc_destroy); 70 } 71 72 size_t xe_gt_lrc_size(struct xe_gt *gt, enum xe_engine_class class); 73 u32 xe_lrc_pphwsp_offset(struct xe_lrc *lrc); 74 u32 xe_lrc_regs_offset(struct xe_lrc *lrc); 75 76 void xe_lrc_set_ring_tail(struct xe_lrc *lrc, u32 tail); 77 u32 xe_lrc_ring_tail(struct xe_lrc *lrc); 78 void xe_lrc_set_ring_head(struct xe_lrc *lrc, u32 head); 79 u32 xe_lrc_ring_head(struct xe_lrc *lrc); 80 u32 xe_lrc_ring_space(struct xe_lrc *lrc); 81 void xe_lrc_write_ring(struct xe_lrc *lrc, const void *data, size_t size); 82 83 bool xe_lrc_ring_is_idle(struct xe_lrc *lrc); 84 85 u32 xe_lrc_indirect_ring_ggtt_addr(struct xe_lrc *lrc); 86 u32 xe_lrc_ggtt_addr(struct xe_lrc *lrc); 87 u32 *xe_lrc_regs(struct xe_lrc *lrc); 88 89 u32 xe_lrc_read_ctx_reg(struct xe_lrc *lrc, int reg_nr); 90 void xe_lrc_write_ctx_reg(struct xe_lrc *lrc, int reg_nr, u32 val); 91 92 u64 xe_lrc_descriptor(struct xe_lrc *lrc); 93 94 u32 xe_lrc_seqno_ggtt_addr(struct xe_lrc *lrc); 95 struct dma_fence *xe_lrc_alloc_seqno_fence(void); 96 void xe_lrc_free_seqno_fence(struct dma_fence *fence); 97 void xe_lrc_init_seqno_fence(struct xe_lrc *lrc, struct dma_fence *fence); 98 s32 xe_lrc_seqno(struct xe_lrc *lrc); 99 100 u32 xe_lrc_start_seqno_ggtt_addr(struct xe_lrc *lrc); 101 s32 xe_lrc_start_seqno(struct xe_lrc *lrc); 102 103 u32 xe_lrc_parallel_ggtt_addr(struct xe_lrc *lrc); 104 struct iosys_map xe_lrc_parallel_map(struct xe_lrc *lrc); 105 106 size_t xe_lrc_skip_size(struct xe_device *xe); 107 108 void xe_lrc_dump_default(struct drm_printer *p, 109 struct xe_gt *gt, 110 enum xe_engine_class); 111 112 void xe_lrc_emit_hwe_state_instructions(struct xe_exec_queue *q, struct xe_bb *bb); 113 114 struct xe_lrc_snapshot *xe_lrc_snapshot_capture(struct xe_lrc *lrc); 115 void xe_lrc_snapshot_capture_delayed(struct xe_lrc_snapshot *snapshot); 116 void xe_lrc_snapshot_print(struct xe_lrc_snapshot *snapshot, struct drm_printer *p); 117 void xe_lrc_snapshot_free(struct xe_lrc_snapshot *snapshot); 118 119 u32 xe_lrc_ctx_timestamp_ggtt_addr(struct xe_lrc *lrc); 120 u32 xe_lrc_ctx_timestamp(struct xe_lrc *lrc); 121 u32 xe_lrc_ctx_job_timestamp_ggtt_addr(struct xe_lrc *lrc); 122 u32 xe_lrc_ctx_job_timestamp(struct xe_lrc *lrc); 123 124 /** 125 * xe_lrc_update_timestamp - readout LRC timestamp and update cached value 126 * @lrc: logical ring context for this exec queue 127 * @old_ts: pointer where to save the previous timestamp 128 * 129 * Read the current timestamp for this LRC and update the cached value. The 130 * previous cached value is also returned in @old_ts so the caller can calculate 131 * the delta between 2 updates. Note that this is not intended to be called from 132 * any place, but just by the paths updating the drm client utilization. 133 * 134 * Returns the current LRC timestamp 135 */ 136 u32 xe_lrc_update_timestamp(struct xe_lrc *lrc, u32 *old_ts); 137 138 #endif 139