drivers/gpu/drm/amd/amdgpu/vcn_sw_ring.c

/*
 * 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.
 *
 */

#include "amdgpu.h"
#include "vcn_sw_ring.h"

void vcn_dec_sw_ring_emit_fence(struct amdgpu_ring *ring, u64 addr,
	u64 seq, uint32_t flags)
{
	WARN_ON(flags & AMDGPU_FENCE_FLAG_64BIT);

	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_FENCE);
	amdgpu_ring_write(ring, addr);
	amdgpu_ring_write(ring, upper_32_bits(addr));
	amdgpu_ring_write(ring, seq);
	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_TRAP);
}

void vcn_dec_sw_ring_insert_end(struct amdgpu_ring *ring)
{
	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_END);
}

void vcn_dec_sw_ring_emit_ib(struct amdgpu_ring *ring, struct amdgpu_job *job,
	struct amdgpu_ib *ib, uint32_t flags)
{
	uint32_t vmid = AMDGPU_JOB_GET_VMID(job);

	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_IB);
	amdgpu_ring_write(ring, vmid);
	amdgpu_ring_write(ring, lower_32_bits(ib->gpu_addr));
	amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr));
	amdgpu_ring_write(ring, ib->length_dw);
}

void vcn_dec_sw_ring_emit_reg_wait(struct amdgpu_ring *ring, uint32_t reg,
	uint32_t val, uint32_t mask)
{
	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_REG_WAIT);
	amdgpu_ring_write(ring, reg << 2);
	amdgpu_ring_write(ring, mask);
	amdgpu_ring_write(ring, val);
}

void vcn_dec_sw_ring_emit_vm_flush(struct amdgpu_ring *ring,
	uint32_t vmid, uint64_t pd_addr)
{
	struct amdgpu_vmhub *hub = &ring->adev->vmhub[ring->funcs->vmhub];
	uint32_t data0, data1, mask;

	pd_addr = amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);

	/* wait for register write */
	data0 = hub->ctx0_ptb_addr_lo32 + vmid * hub->ctx_addr_distance;
	data1 = lower_32_bits(pd_addr);
	mask = 0xffffffff;
	vcn_dec_sw_ring_emit_reg_wait(ring, data0, data1, mask);
}

void vcn_dec_sw_ring_emit_wreg(struct amdgpu_ring *ring, uint32_t reg,
	uint32_t val)
{
	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_REG_WRITE);
	amdgpu_ring_write(ring,	reg << 2);
	amdgpu_ring_write(ring, val);
}