diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.h new file mode 100644 index 000000000000..4be45fc14954 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.h @@ -0,0 +1,103 @@ +/* + * 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; +}; + +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. + */ +struct amdgpu_mux_chunk { + struct list_head entry; + uint32_t sync_seq; + u64 start; + u64 end; +}; + +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); +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); +const char *amdgpu_sw_ring_name(int idx); +unsigned int amdgpu_sw_ring_priority(int idx); + +#endif |