diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_lrc.h')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_lrc.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_lrc.h b/drivers/gpu/drm/xe/xe_lrc.h new file mode 100644 index 000000000000..2fb628da5c43 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_lrc.h @@ -0,0 +1,163 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2021 Intel Corporation + */ +#ifndef _XE_LRC_H_ +#define _XE_LRC_H_ + +#include <linux/types.h> + +#include "xe_lrc_types.h" + +struct drm_printer; +struct xe_bb; +struct xe_device; +struct xe_exec_queue; +enum xe_engine_class; +struct xe_gt; +struct xe_hw_engine; +struct xe_lrc; +struct xe_vm; + +struct xe_lrc_snapshot { + struct xe_bo *lrc_bo; + void *lrc_snapshot; + unsigned long lrc_size, lrc_offset; + + u32 context_desc; + u32 ring_addr; + u32 indirect_context_desc; + u32 head; + u32 start; + struct { + u32 internal; + u32 memory; + } tail; + u32 start_seqno; + u32 seqno; + u32 ctx_timestamp; + u32 ctx_job_timestamp; +}; + +#define LRC_PPHWSP_FLUSH_INVAL_SCRATCH_ADDR (0x34 * 4) +#define LRC_PPHWSP_PXP_INVAL_SCRATCH_ADDR (0x40 * 4) + +#define LRC_WA_BB_SIZE SZ_4K + +#define XE_LRC_CREATE_RUNALONE BIT(0) +#define XE_LRC_CREATE_PXP BIT(1) +#define XE_LRC_CREATE_USER_CTX BIT(2) + +struct xe_lrc *xe_lrc_create(struct xe_hw_engine *hwe, struct xe_vm *vm, + u32 ring_size, u16 msix_vec, u32 flags); +void xe_lrc_destroy(struct kref *ref); + +/** + * xe_lrc_get - Get reference to the LRC + * @lrc: Logical Ring Context + * + * Increment reference count of @lrc + */ +static inline struct xe_lrc *xe_lrc_get(struct xe_lrc *lrc) +{ + kref_get(&lrc->refcount); + return lrc; +} + +/** + * xe_lrc_put - Put reference of the LRC + * @lrc: Logical Ring Context + * + * Decrement reference count of @lrc, call xe_lrc_destroy when + * reference count reaches 0. + */ +static inline void xe_lrc_put(struct xe_lrc *lrc) +{ + kref_put(&lrc->refcount, xe_lrc_destroy); +} + +/** + * xe_lrc_ring_size() - Xe LRC ring size + * + * Return: Size of LRC ring buffer + */ +static inline size_t xe_lrc_ring_size(void) +{ + return SZ_16K; +} + +size_t xe_gt_lrc_size(struct xe_gt *gt, enum xe_engine_class class); +u32 xe_lrc_pphwsp_offset(struct xe_lrc *lrc); +u32 xe_lrc_regs_offset(struct xe_lrc *lrc); + +void xe_lrc_set_ring_tail(struct xe_lrc *lrc, u32 tail); +u32 xe_lrc_ring_tail(struct xe_lrc *lrc); +void xe_lrc_set_ring_head(struct xe_lrc *lrc, u32 head); +u32 xe_lrc_ring_head(struct xe_lrc *lrc); +u32 xe_lrc_ring_space(struct xe_lrc *lrc); +void xe_lrc_write_ring(struct xe_lrc *lrc, const void *data, size_t size); + +bool xe_lrc_ring_is_idle(struct xe_lrc *lrc); + +u32 xe_lrc_indirect_ring_ggtt_addr(struct xe_lrc *lrc); +u32 xe_lrc_ggtt_addr(struct xe_lrc *lrc); +u32 *xe_lrc_regs(struct xe_lrc *lrc); +void xe_lrc_update_hwctx_regs_with_address(struct xe_lrc *lrc); +void xe_default_lrc_update_memirq_regs_with_address(struct xe_hw_engine *hwe); +void xe_lrc_update_memirq_regs_with_address(struct xe_lrc *lrc, struct xe_hw_engine *hwe, + u32 *regs); + +u32 xe_lrc_read_ctx_reg(struct xe_lrc *lrc, int reg_nr); +void xe_lrc_write_ctx_reg(struct xe_lrc *lrc, int reg_nr, u32 val); + +u64 xe_lrc_descriptor(struct xe_lrc *lrc); + +u32 xe_lrc_seqno_ggtt_addr(struct xe_lrc *lrc); +struct dma_fence *xe_lrc_alloc_seqno_fence(void); +void xe_lrc_free_seqno_fence(struct dma_fence *fence); +void xe_lrc_init_seqno_fence(struct xe_lrc *lrc, struct dma_fence *fence); +s32 xe_lrc_seqno(struct xe_lrc *lrc); + +u32 xe_lrc_start_seqno_ggtt_addr(struct xe_lrc *lrc); +s32 xe_lrc_start_seqno(struct xe_lrc *lrc); + +u32 xe_lrc_parallel_ggtt_addr(struct xe_lrc *lrc); +struct iosys_map xe_lrc_parallel_map(struct xe_lrc *lrc); + +size_t xe_lrc_reg_size(struct xe_device *xe); +size_t xe_lrc_skip_size(struct xe_device *xe); + +void xe_lrc_dump_default(struct drm_printer *p, + struct xe_gt *gt, + enum xe_engine_class); + +u32 *xe_lrc_emit_hwe_state_instructions(struct xe_exec_queue *q, u32 *cs); + +struct xe_lrc_snapshot *xe_lrc_snapshot_capture(struct xe_lrc *lrc); +void xe_lrc_snapshot_capture_delayed(struct xe_lrc_snapshot *snapshot); +void xe_lrc_snapshot_print(struct xe_lrc_snapshot *snapshot, struct drm_printer *p); +void xe_lrc_snapshot_free(struct xe_lrc_snapshot *snapshot); + +u32 xe_lrc_ctx_timestamp_ggtt_addr(struct xe_lrc *lrc); +u32 xe_lrc_ctx_timestamp_udw_ggtt_addr(struct xe_lrc *lrc); +u64 xe_lrc_ctx_timestamp(struct xe_lrc *lrc); +u32 xe_lrc_ctx_job_timestamp_ggtt_addr(struct xe_lrc *lrc); +u32 xe_lrc_ctx_job_timestamp(struct xe_lrc *lrc); +int xe_lrc_setup_wa_bb_with_scratch(struct xe_lrc *lrc, struct xe_hw_engine *hwe, + u32 *scratch); + +/** + * xe_lrc_update_timestamp - readout LRC timestamp and update cached value + * @lrc: logical ring context for this exec queue + * @old_ts: pointer where to save the previous timestamp + * + * Read the current timestamp for this LRC and update the cached value. The + * previous cached value is also returned in @old_ts so the caller can calculate + * the delta between 2 updates. Note that this is not intended to be called from + * any place, but just by the paths updating the drm client utilization. + * + * Returns the current LRC timestamp + */ +u64 xe_lrc_update_timestamp(struct xe_lrc *lrc, u64 *old_ts); + +#endif |