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_FLUSH_INVAL_SCRATCH_ADDR (0x34 * 4) 43 #define LRC_PPHWSP_PXP_INVAL_SCRATCH_ADDR (0x40 * 4) 44 45 #define LRC_WA_BB_SIZE SZ_4K 46 47 #define XE_LRC_CREATE_RUNALONE BIT(0) 48 #define XE_LRC_CREATE_PXP BIT(1) 49 #define XE_LRC_CREATE_USER_CTX BIT(2) 50 51 struct xe_lrc *xe_lrc_create(struct xe_hw_engine *hwe, struct xe_vm *vm, 52 u32 ring_size, u16 msix_vec, u32 flags); 53 void xe_lrc_destroy(struct kref *ref); 54 55 /** 56 * xe_lrc_get - Get reference to the LRC 57 * @lrc: Logical Ring Context 58 * 59 * Increment reference count of @lrc 60 */ 61 static inline struct xe_lrc *xe_lrc_get(struct xe_lrc *lrc) 62 { 63 kref_get(&lrc->refcount); 64 return lrc; 65 } 66 67 /** 68 * xe_lrc_put - Put reference of the LRC 69 * @lrc: Logical Ring Context 70 * 71 * Decrement reference count of @lrc, call xe_lrc_destroy when 72 * reference count reaches 0. 73 */ 74 static inline void xe_lrc_put(struct xe_lrc *lrc) 75 { 76 kref_put(&lrc->refcount, xe_lrc_destroy); 77 } 78 79 /** 80 * xe_lrc_ring_size() - Xe LRC ring size 81 * 82 * Return: Size of LRC ring buffer 83 */ 84 static inline size_t xe_lrc_ring_size(void) 85 { 86 return SZ_16K; 87 } 88 89 size_t xe_gt_lrc_size(struct xe_gt *gt, enum xe_engine_class class); 90 u32 xe_lrc_pphwsp_offset(struct xe_lrc *lrc); 91 u32 xe_lrc_regs_offset(struct xe_lrc *lrc); 92 93 void xe_lrc_set_ring_tail(struct xe_lrc *lrc, u32 tail); 94 u32 xe_lrc_ring_tail(struct xe_lrc *lrc); 95 void xe_lrc_set_ring_head(struct xe_lrc *lrc, u32 head); 96 u32 xe_lrc_ring_head(struct xe_lrc *lrc); 97 u32 xe_lrc_ring_space(struct xe_lrc *lrc); 98 void xe_lrc_write_ring(struct xe_lrc *lrc, const void *data, size_t size); 99 100 bool xe_lrc_ring_is_idle(struct xe_lrc *lrc); 101 102 u32 xe_lrc_indirect_ring_ggtt_addr(struct xe_lrc *lrc); 103 u32 xe_lrc_ggtt_addr(struct xe_lrc *lrc); 104 u32 *xe_lrc_regs(struct xe_lrc *lrc); 105 void xe_lrc_update_hwctx_regs_with_address(struct xe_lrc *lrc); 106 void xe_default_lrc_update_memirq_regs_with_address(struct xe_hw_engine *hwe); 107 void xe_lrc_update_memirq_regs_with_address(struct xe_lrc *lrc, struct xe_hw_engine *hwe, 108 u32 *regs); 109 110 u32 xe_lrc_read_ctx_reg(struct xe_lrc *lrc, int reg_nr); 111 void xe_lrc_write_ctx_reg(struct xe_lrc *lrc, int reg_nr, u32 val); 112 113 u64 xe_lrc_descriptor(struct xe_lrc *lrc); 114 115 u32 xe_lrc_seqno_ggtt_addr(struct xe_lrc *lrc); 116 struct dma_fence *xe_lrc_alloc_seqno_fence(void); 117 void xe_lrc_free_seqno_fence(struct dma_fence *fence); 118 void xe_lrc_init_seqno_fence(struct xe_lrc *lrc, struct dma_fence *fence); 119 s32 xe_lrc_seqno(struct xe_lrc *lrc); 120 121 u32 xe_lrc_start_seqno_ggtt_addr(struct xe_lrc *lrc); 122 s32 xe_lrc_start_seqno(struct xe_lrc *lrc); 123 124 u32 xe_lrc_parallel_ggtt_addr(struct xe_lrc *lrc); 125 struct iosys_map xe_lrc_parallel_map(struct xe_lrc *lrc); 126 127 size_t xe_lrc_reg_size(struct xe_device *xe); 128 size_t xe_lrc_skip_size(struct xe_device *xe); 129 130 void xe_lrc_dump_default(struct drm_printer *p, 131 struct xe_gt *gt, 132 enum xe_engine_class); 133 134 u32 *xe_lrc_emit_hwe_state_instructions(struct xe_exec_queue *q, u32 *cs); 135 136 struct xe_lrc_snapshot *xe_lrc_snapshot_capture(struct xe_lrc *lrc); 137 void xe_lrc_snapshot_capture_delayed(struct xe_lrc_snapshot *snapshot); 138 void xe_lrc_snapshot_print(struct xe_lrc_snapshot *snapshot, struct drm_printer *p); 139 void xe_lrc_snapshot_free(struct xe_lrc_snapshot *snapshot); 140 141 u32 xe_lrc_ctx_timestamp_ggtt_addr(struct xe_lrc *lrc); 142 u32 xe_lrc_ctx_timestamp_udw_ggtt_addr(struct xe_lrc *lrc); 143 u64 xe_lrc_ctx_timestamp(struct xe_lrc *lrc); 144 u32 xe_lrc_ctx_job_timestamp_ggtt_addr(struct xe_lrc *lrc); 145 u32 xe_lrc_ctx_job_timestamp(struct xe_lrc *lrc); 146 int xe_lrc_setup_wa_bb_with_scratch(struct xe_lrc *lrc, struct xe_hw_engine *hwe, 147 u32 *scratch); 148 149 /** 150 * xe_lrc_update_timestamp - readout LRC timestamp and update cached value 151 * @lrc: logical ring context for this exec queue 152 * @old_ts: pointer where to save the previous timestamp 153 * 154 * Read the current timestamp for this LRC and update the cached value. The 155 * previous cached value is also returned in @old_ts so the caller can calculate 156 * the delta between 2 updates. Note that this is not intended to be called from 157 * any place, but just by the paths updating the drm client utilization. 158 * 159 * Returns the current LRC timestamp 160 */ 161 u64 xe_lrc_update_timestamp(struct xe_lrc *lrc, u64 *old_ts); 162 163 #endif 164