/*
* Copyright 2022 Advanced Micro Devices , Inc .
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) BE LIABLE FOR ANY CLAIM , DAMAGES OR
* OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE ,
* ARISING FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE .
*
*/
#ifndef __AMDGPU_RING_MUX__
#define __AMDGPU_RING_MUX__
#include <linux/timer.h>
#include <linux/spinlock.h>
#include "amdgpu_ring.h"
struct amdgpu_ring;
/**
* struct amdgpu_mux_entry - the entry recording software rings copying information .
* @ ring : the pointer to the software ring .
* @ start_ptr_in_hw_ring : last start location copied to in the hardware ring .
* @ end_ptr_in_hw_ring : last end location copied to in the hardware ring .
* @ sw_cptr : the position of the copy pointer in the sw ring .
* @ sw_rptr : the read pointer in software ring .
* @ sw_wptr : the write pointer in software ring .
* @ list : list head for amdgpu_mux_chunk
*/
struct amdgpu_mux_entry {
struct amdgpu_ring *ring;
u64 start_ptr_in_hw_ring;
u64 end_ptr_in_hw_ring;
u64 sw_cptr;
u64 sw_rptr;
u64 sw_wptr;
struct list_head list;
};
enum amdgpu_ring_mux_offset_type {
AMDGPU_MUX_OFFSET_TYPE_CONTROL,
AMDGPU_MUX_OFFSET_TYPE_DE,
AMDGPU_MUX_OFFSET_TYPE_CE,
};
enum ib_complete_status {
/* IB not started/reset value, default value. */
IB_COMPLETION_STATUS_DEFAULT = 0 ,
/* IB preempted, started but not completed. */
IB_COMPLETION_STATUS_PREEMPTED = 1 ,
/* IB completed. */
IB_COMPLETION_STATUS_COMPLETED = 2 ,
};
struct amdgpu_ring_mux {
struct amdgpu_ring *real_ring;
struct amdgpu_mux_entry *ring_entry;
unsigned int num_ring_entries;
unsigned int ring_entry_size;
/*the lock for copy data from different software rings*/
spinlock_t lock;
bool s_resubmit;
uint32_t seqno_to_resubmit;
u64 wptr_resubmit;
struct timer_list resubmit_timer;
bool pending_trailing_fence_signaled;
};
/**
* struct amdgpu_mux_chunk - save the location of indirect buffer ' s package on softare rings .
* @ entry : the list entry .
* @ sync_seq : the fence seqno related with the saved IB .
* @ start : - start location on the software ring .
* @ end : - end location on the software ring .
* @ control_offset : - the PRE_RESUME bit position used for resubmission .
* @ de_offset : - the anchor in write_data for de meta of resubmission .
* @ ce_offset : - the anchor in write_data for ce meta of resubmission .
*/
struct amdgpu_mux_chunk {
struct list_head entry;
uint32_t sync_seq;
u64 start;
u64 end;
u64 cntl_offset;
u64 de_offset;
u64 ce_offset;
};
int amdgpu_ring_mux_init(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring,
unsigned int entry_size);
void amdgpu_ring_mux_fini(struct amdgpu_ring_mux *mux);
int amdgpu_ring_mux_add_sw_ring(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring);
void amdgpu_ring_mux_set_wptr(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring, u64 wptr);
u64 amdgpu_ring_mux_get_wptr(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring);
u64 amdgpu_ring_mux_get_rptr(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring);
void amdgpu_ring_mux_start_ib(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring);
void amdgpu_ring_mux_end_ib(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring);
void amdgpu_ring_mux_ib_mark_offset(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring,
u64 offset, enum amdgpu_ring_mux_offset_type type);
bool amdgpu_mcbp_handle_trailing_fence_irq(struct amdgpu_ring_mux *mux);
u64 amdgpu_sw_ring_get_rptr_gfx(struct amdgpu_ring *ring);
u64 amdgpu_sw_ring_get_wptr_gfx(struct amdgpu_ring *ring);
void amdgpu_sw_ring_set_wptr_gfx(struct amdgpu_ring *ring);
void amdgpu_sw_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count);
void amdgpu_sw_ring_ib_begin(struct amdgpu_ring *ring);
void amdgpu_sw_ring_ib_end(struct amdgpu_ring *ring);
void amdgpu_sw_ring_ib_mark_offset(struct amdgpu_ring *ring, enum amdgpu_ring_mux_offset_type type);
const char *amdgpu_sw_ring_name(int idx);
unsigned int amdgpu_sw_ring_priority(int idx);
#endif
Messung V0.5 in Prozent C=95 H=100 G=97
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-10-02)
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