drm/amdgpu: add initial support for UMSCH

Add basic data structure, dummy ring functions
and ip functions for UMSCH.

Implement sw_init(ring_init and init_microcodede) and
hw_init(load_microcode), UMSCH can boot up now.

Implement hw_init(ring_start) and hw_fini(ring_stop),
UMSCH is ready for command submission now.

Implement set_hw_resources and add/remove_queue,
UMSCH is ready for scheduling now.

Aggregated doorbell is used to notify UMSCH FW that
there is unmapped queue with corresponding priority level
(e.g., AGDB[0] for Real time band, etc.) is updating its job.

v2: squash together initial patches to avoid breaking the
    build (Alex)

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Veerabadhran Gopalakrishnan <Veerabadhran.Gopalakrishnan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 385 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c b/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c
new file mode 100644
index 000000000000..0683a8cb044d
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/umsch_mm_v4_0.c
@@ -0,0 +1,385 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright 2023 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 <linux/firmware.h>
+#include <linux/module.h>
+#include "amdgpu.h"
+#include "soc15_common.h"
+#include "soc21.h"
+#include "vcn/vcn_4_0_0_offset.h"
+#include "vcn/vcn_4_0_0_sh_mask.h"
+
+#include "amdgpu_umsch_mm.h"
+#include "umsch_mm_4_0_api_def.h"
+#include "umsch_mm_v4_0.h"
+
+static int umsch_mm_v4_0_load_microcode(struct amdgpu_umsch_mm *umsch)
+{
+	struct amdgpu_device *adev = umsch->ring.adev;
+	uint32_t data;
+	int r;
+
+	r = amdgpu_umsch_mm_allocate_ucode_buffer(umsch);
+	if (r)
+		return r;
+
+	r = amdgpu_umsch_mm_allocate_ucode_data_buffer(umsch);
+	if (r)
+		goto err_free_ucode_bo;
+
+	data = RREG32_SOC15(VCN, 0, regUMSCH_MES_RESET_CTRL);
+	data = REG_SET_FIELD(data, UMSCH_MES_RESET_CTRL, MES_CORE_SOFT_RESET, 0);
+	WREG32_SOC15(VCN, 0, regUMSCH_MES_RESET_CTRL, data);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_MES_CNTL);
+	data = REG_SET_FIELD(data, VCN_MES_CNTL, MES_INVALIDATE_ICACHE, 1);
+	data = REG_SET_FIELD(data, VCN_MES_CNTL, MES_PIPE0_RESET, 1);
+	data = REG_SET_FIELD(data, VCN_MES_CNTL, MES_PIPE0_ACTIVE, 0);
+	data = REG_SET_FIELD(data, VCN_MES_CNTL, MES_HALT, 1);
+	WREG32_SOC15(VCN, 0, regVCN_MES_CNTL, data);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_MES_IC_BASE_CNTL);
+	data = REG_SET_FIELD(data, VCN_MES_IC_BASE_CNTL, VMID, 0);
+	data = REG_SET_FIELD(data, VCN_MES_IC_BASE_CNTL, EXE_DISABLE, 0);
+	data = REG_SET_FIELD(data, VCN_MES_IC_BASE_CNTL, CACHE_POLICY, 0);
+	WREG32_SOC15(VCN, 0, regVCN_MES_IC_BASE_CNTL, data);
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_INTR_ROUTINE_START,
+		     lower_32_bits(adev->umsch_mm.irq_start_addr >> 2));
+	WREG32_SOC15(VCN, 0, regVCN_MES_INTR_ROUTINE_START_HI,
+		     upper_32_bits(adev->umsch_mm.irq_start_addr >> 2));
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_PRGRM_CNTR_START,
+		     lower_32_bits(adev->umsch_mm.uc_start_addr >> 2));
+	WREG32_SOC15(VCN, 0, regVCN_MES_PRGRM_CNTR_START_HI,
+		     upper_32_bits(adev->umsch_mm.uc_start_addr >> 2));
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_LOCAL_INSTR_BASE_LO, 0);
+	WREG32_SOC15(VCN, 0, regVCN_MES_LOCAL_INSTR_BASE_HI, 0);
+
+	data = adev->umsch_mm.uc_start_addr + adev->umsch_mm.ucode_size - 1;
+	WREG32_SOC15(VCN, 0, regVCN_MES_LOCAL_INSTR_MASK_LO, lower_32_bits(data));
+	WREG32_SOC15(VCN, 0, regVCN_MES_LOCAL_INSTR_MASK_HI, upper_32_bits(data));
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_IC_BASE_LO,
+		     lower_32_bits(adev->umsch_mm.ucode_fw_gpu_addr));
+	WREG32_SOC15(VCN, 0, regVCN_MES_IC_BASE_HI,
+		     upper_32_bits(adev->umsch_mm.ucode_fw_gpu_addr));
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_MIBOUND_LO, 0x1FFFFF);
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_LOCAL_BASE0_LO,
+		     lower_32_bits(adev->umsch_mm.data_start_addr));
+	WREG32_SOC15(VCN, 0, regVCN_MES_LOCAL_BASE0_HI,
+		     upper_32_bits(adev->umsch_mm.data_start_addr));
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_LOCAL_MASK0_LO,
+		     lower_32_bits(adev->umsch_mm.data_size - 1));
+	WREG32_SOC15(VCN, 0, regVCN_MES_LOCAL_MASK0_HI,
+		     upper_32_bits(adev->umsch_mm.data_size - 1));
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_DC_BASE_LO,
+		     lower_32_bits(adev->umsch_mm.data_fw_gpu_addr));
+	WREG32_SOC15(VCN, 0, regVCN_MES_DC_BASE_HI,
+		     upper_32_bits(adev->umsch_mm.data_fw_gpu_addr));
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_MDBOUND_LO, 0x3FFFF);
+
+	data = RREG32_SOC15(VCN, 0, regUVD_UMSCH_FORCE);
+	data = REG_SET_FIELD(data, UVD_UMSCH_FORCE, IC_FORCE_GPUVM, 1);
+	data = REG_SET_FIELD(data, UVD_UMSCH_FORCE, DC_FORCE_GPUVM, 1);
+	WREG32_SOC15(VCN, 0, regUVD_UMSCH_FORCE, data);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_MES_IC_OP_CNTL);
+	data = REG_SET_FIELD(data, VCN_MES_IC_OP_CNTL, PRIME_ICACHE, 0);
+	data = REG_SET_FIELD(data, VCN_MES_IC_OP_CNTL, INVALIDATE_CACHE, 1);
+	WREG32_SOC15(VCN, 0, regVCN_MES_IC_OP_CNTL, data);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_MES_IC_OP_CNTL);
+	data = REG_SET_FIELD(data, VCN_MES_IC_OP_CNTL, PRIME_ICACHE, 1);
+	WREG32_SOC15(VCN, 0, regVCN_MES_IC_OP_CNTL, data);
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_GP0_LO, 0);
+	WREG32_SOC15(VCN, 0, regVCN_MES_GP0_HI, 0);
+
+	WREG32_SOC15(VCN, 0, regVCN_MES_GP1_LO, 0);
+	WREG32_SOC15(VCN, 0, regVCN_MES_GP1_HI, 0);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_MES_CNTL);
+	data = REG_SET_FIELD(data, VCN_MES_CNTL, MES_INVALIDATE_ICACHE, 0);
+	data = REG_SET_FIELD(data, VCN_MES_CNTL, MES_PIPE0_RESET, 0);
+	data = REG_SET_FIELD(data, VCN_MES_CNTL, MES_HALT, 0);
+	data = REG_SET_FIELD(data, VCN_MES_CNTL, MES_PIPE0_ACTIVE, 1);
+	WREG32_SOC15(VCN, 0, regVCN_MES_CNTL, data);
+
+	r = SOC15_WAIT_ON_RREG(VCN, 0, regVCN_MES_MSTATUS_LO, 0xAAAAAAAA, 0xFFFFFFFF);
+	if (r) {
+		dev_err(adev->dev, "UMSCH FW Load: Failed, regVCN_MES_MSTATUS_LO: 0x%08x\n",
+			RREG32_SOC15(VCN, 0, regVCN_MES_MSTATUS_LO));
+		goto err_free_data_bo;
+	}
+
+	return 0;
+
+err_free_data_bo:
+	amdgpu_bo_free_kernel(&adev->umsch_mm.data_fw_obj,
+			      &adev->umsch_mm.data_fw_gpu_addr,
+			      (void **)&adev->umsch_mm.data_fw_ptr);
+err_free_ucode_bo:
+	amdgpu_bo_free_kernel(&adev->umsch_mm.ucode_fw_obj,
+			      &adev->umsch_mm.ucode_fw_gpu_addr,
+			      (void **)&adev->umsch_mm.ucode_fw_ptr);
+	return r;
+}
+
+static void umsch_mm_v4_0_aggregated_doorbell_init(struct amdgpu_umsch_mm *umsch)
+{
+	struct amdgpu_device *adev = umsch->ring.adev;
+	uint32_t data;
+
+	data = RREG32_SOC15(VCN, 0, regVCN_AGDB_CTRL0);
+	data = REG_SET_FIELD(data, VCN_AGDB_CTRL0, OFFSET,
+	       umsch->agdb_index[CONTEXT_PRIORITY_LEVEL_REALTIME]);
+	data = REG_SET_FIELD(data, VCN_AGDB_CTRL0, EN, 1);
+	WREG32_SOC15(VCN, 0, regVCN_AGDB_CTRL0, data);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_AGDB_CTRL1);
+	data = REG_SET_FIELD(data, VCN_AGDB_CTRL1, OFFSET,
+	       umsch->agdb_index[CONTEXT_PRIORITY_LEVEL_FOCUS]);
+	data = REG_SET_FIELD(data, VCN_AGDB_CTRL1, EN, 1);
+	WREG32_SOC15(VCN, 0, regVCN_AGDB_CTRL1, data);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_AGDB_CTRL2);
+	data = REG_SET_FIELD(data, VCN_AGDB_CTRL2, OFFSET,
+	       umsch->agdb_index[CONTEXT_PRIORITY_LEVEL_NORMAL]);
+	data = REG_SET_FIELD(data, VCN_AGDB_CTRL2, EN, 1);
+	WREG32_SOC15(VCN, 0, regVCN_AGDB_CTRL2, data);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_AGDB_CTRL3);
+	data = REG_SET_FIELD(data, VCN_AGDB_CTRL3, OFFSET,
+	       umsch->agdb_index[CONTEXT_PRIORITY_LEVEL_IDLE]);
+	data = REG_SET_FIELD(data, VCN_AGDB_CTRL3, EN, 1);
+	WREG32_SOC15(VCN, 0, regVCN_AGDB_CTRL3, data);
+}
+
+static int umsch_mm_v4_0_ring_start(struct amdgpu_umsch_mm *umsch)
+{
+	struct amdgpu_ring *ring = &umsch->ring;
+	struct amdgpu_device *adev = ring->adev;
+	uint32_t data;
+
+	data = RREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_DB_CTRL);
+	data = REG_SET_FIELD(data, VCN_UMSCH_RB_DB_CTRL, OFFSET, ring->doorbell_index);
+	data = REG_SET_FIELD(data, VCN_UMSCH_RB_DB_CTRL, EN, 1);
+	WREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_DB_CTRL, data);
+
+	adev->nbio.funcs->vcn_doorbell_range(adev, ring->use_doorbell, ring->doorbell_index, 0);
+
+	WREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_BASE_LO, lower_32_bits(ring->gpu_addr));
+	WREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
+
+	WREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_SIZE, ring->ring_size);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_RB_ENABLE);
+	data &= ~(VCN_RB_ENABLE__AUDIO_RB_EN_MASK);
+	WREG32_SOC15(VCN, 0, regVCN_RB_ENABLE, data);
+
+	umsch_mm_v4_0_aggregated_doorbell_init(umsch);
+
+	return 0;
+}
+
+static int umsch_mm_v4_0_ring_stop(struct amdgpu_umsch_mm *umsch)
+{
+	struct amdgpu_ring *ring = &umsch->ring;
+	struct amdgpu_device *adev = ring->adev;
+	uint32_t data;
+
+	data = RREG32_SOC15(VCN, 0, regVCN_RB_ENABLE);
+	data = REG_SET_FIELD(data, VCN_RB_ENABLE, UMSCH_RB_EN, 0);
+	WREG32_SOC15(VCN, 0, regVCN_RB_ENABLE, data);
+
+	data = RREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_DB_CTRL);
+	data = REG_SET_FIELD(data, VCN_UMSCH_RB_DB_CTRL, EN, 0);
+	WREG32_SOC15(VCN, 0, regVCN_UMSCH_RB_DB_CTRL, data);
+
+	return 0;
+}
+
+static int umsch_mm_v4_0_set_hw_resources(struct amdgpu_umsch_mm *umsch)
+{
+	union UMSCHAPI__SET_HW_RESOURCES set_hw_resources = {};
+	struct amdgpu_device *adev = umsch->ring.adev;
+	int r;
+
+	set_hw_resources.header.type = UMSCH_API_TYPE_SCHEDULER;
+	set_hw_resources.header.opcode = UMSCH_API_SET_HW_RSRC;
+	set_hw_resources.header.dwsize = API_FRAME_SIZE_IN_DWORDS;
+
+	set_hw_resources.vmid_mask_mm_vcn = umsch->vmid_mask_mm_vcn;
+	set_hw_resources.vmid_mask_mm_vpe = umsch->vmid_mask_mm_vpe;
+	set_hw_resources.engine_mask = umsch->engine_mask;
+
+	set_hw_resources.vcn0_hqd_mask[0] = umsch->vcn0_hqd_mask;
+	set_hw_resources.vcn1_hqd_mask[0] = umsch->vcn1_hqd_mask;
+	set_hw_resources.vcn_hqd_mask[0] = umsch->vcn_hqd_mask[0];
+	set_hw_resources.vcn_hqd_mask[1] = umsch->vcn_hqd_mask[1];
+	set_hw_resources.vpe_hqd_mask[0] = umsch->vpe_hqd_mask;
+
+	set_hw_resources.g_sch_ctx_gpu_mc_ptr = umsch->sch_ctx_gpu_addr;
+
+	set_hw_resources.enable_level_process_quantum_check = 1;
+
+	memcpy(set_hw_resources.mmhub_base, adev->reg_offset[MMHUB_HWIP][0],
+	       sizeof(uint32_t) * 5);
+	set_hw_resources.mmhub_version = adev->ip_versions[MMHUB_HWIP][0];
+
+	memcpy(set_hw_resources.osssys_base, adev->reg_offset[OSSSYS_HWIP][0],
+	       sizeof(uint32_t) * 5);
+	set_hw_resources.osssys_version = adev->ip_versions[OSSSYS_HWIP][0];
+
+	set_hw_resources.api_status.api_completion_fence_addr = umsch->ring.fence_drv.gpu_addr;
+	set_hw_resources.api_status.api_completion_fence_value = ++umsch->ring.fence_drv.sync_seq;
+
+	r = amdgpu_umsch_mm_submit_pkt(umsch, &set_hw_resources.max_dwords_in_api,
+				       API_FRAME_SIZE_IN_DWORDS);
+	if (r)
+		return r;
+
+	r = amdgpu_umsch_mm_query_fence(umsch);
+	if (r) {
+		dev_err(adev->dev, "UMSCH SET_HW_RESOURCES: Failed\n");
+		return r;
+	}
+
+	return 0;
+}
+
+static int umsch_mm_v4_0_add_queue(struct amdgpu_umsch_mm *umsch,
+				   struct umsch_mm_add_queue_input *input_ptr)
+{
+	struct amdgpu_device *adev = umsch->ring.adev;
+	union UMSCHAPI__ADD_QUEUE add_queue = {};
+	int r;
+
+	add_queue.header.type = UMSCH_API_TYPE_SCHEDULER;
+	add_queue.header.opcode = UMSCH_API_ADD_QUEUE;
+	add_queue.header.dwsize = API_FRAME_SIZE_IN_DWORDS;
+
+	add_queue.process_id = input_ptr->process_id;
+	add_queue.page_table_base_addr = input_ptr->page_table_base_addr;
+	add_queue.process_va_start = input_ptr->process_va_start;
+	add_queue.process_va_end = input_ptr->process_va_end;
+	add_queue.process_quantum = input_ptr->process_quantum;
+	add_queue.process_csa_addr = input_ptr->process_csa_addr;
+	add_queue.context_quantum = input_ptr->context_quantum;
+	add_queue.context_csa_addr = input_ptr->context_csa_addr;
+	add_queue.inprocess_context_priority = input_ptr->inprocess_context_priority;
+	add_queue.context_global_priority_level =
+		(enum UMSCH_AMD_PRIORITY_LEVEL)input_ptr->context_global_priority_level;
+	add_queue.doorbell_offset_0 = input_ptr->doorbell_offset_0;
+	add_queue.doorbell_offset_1 = input_ptr->doorbell_offset_1;
+	add_queue.affinity.u32All = input_ptr->affinity;
+	add_queue.mqd_addr = input_ptr->mqd_addr;
+	add_queue.engine_type = (enum UMSCH_ENGINE_TYPE)input_ptr->engine_type;
+	add_queue.h_context = input_ptr->h_context;
+	add_queue.h_queue = input_ptr->h_queue;
+	add_queue.vm_context_cntl = input_ptr->vm_context_cntl;
+	add_queue.is_context_suspended = input_ptr->is_context_suspended;
+
+	add_queue.api_status.api_completion_fence_addr = umsch->ring.fence_drv.gpu_addr;
+	add_queue.api_status.api_completion_fence_value = ++umsch->ring.fence_drv.sync_seq;
+
+	r = amdgpu_umsch_mm_submit_pkt(umsch, &add_queue.max_dwords_in_api,
+				       API_FRAME_SIZE_IN_DWORDS);
+	if (r)
+		return r;
+
+	r = amdgpu_umsch_mm_query_fence(umsch);
+	if (r) {
+		dev_err(adev->dev, "UMSCH ADD_QUEUE: Failed\n");
+		return r;
+	}
+
+	return 0;
+}
+
+static int umsch_mm_v4_0_remove_queue(struct amdgpu_umsch_mm *umsch,
+				      struct umsch_mm_remove_queue_input *input_ptr)
+{
+	union UMSCHAPI__REMOVE_QUEUE remove_queue = {};
+	struct amdgpu_device *adev = umsch->ring.adev;
+	int r;
+
+	remove_queue.header.type = UMSCH_API_TYPE_SCHEDULER;
+	remove_queue.header.opcode = UMSCH_API_REMOVE_QUEUE;
+	remove_queue.header.dwsize = API_FRAME_SIZE_IN_DWORDS;
+
+	remove_queue.doorbell_offset_0 = input_ptr->doorbell_offset_0;
+	remove_queue.doorbell_offset_1 = input_ptr->doorbell_offset_1;
+	remove_queue.context_csa_addr = input_ptr->context_csa_addr;
+
+	remove_queue.api_status.api_completion_fence_addr = umsch->ring.fence_drv.gpu_addr;
+	remove_queue.api_status.api_completion_fence_value = ++umsch->ring.fence_drv.sync_seq;
+
+	r = amdgpu_umsch_mm_submit_pkt(umsch, &remove_queue.max_dwords_in_api,
+				       API_FRAME_SIZE_IN_DWORDS);
+	if (r)
+		return r;
+
+	r = amdgpu_umsch_mm_query_fence(umsch);
+	if (r) {
+		dev_err(adev->dev, "UMSCH REMOVE_QUEUE: Failed\n");
+		return r;
+	}
+
+	return 0;
+}
+
+static int umsch_mm_v4_0_set_regs(struct amdgpu_umsch_mm *umsch)
+{
+	struct amdgpu_device *adev = container_of(umsch, struct amdgpu_device, umsch_mm);
+
+	umsch->rb_wptr = SOC15_REG_OFFSET(VCN, 0, regVCN_UMSCH_RB_WPTR);
+	umsch->rb_rptr = SOC15_REG_OFFSET(VCN, 0, regVCN_UMSCH_RB_RPTR);
+
+	return 0;
+}
+
+static const struct umsch_mm_funcs umsch_mm_v4_0_funcs = {
+	.set_hw_resources = umsch_mm_v4_0_set_hw_resources,
+	.add_queue = umsch_mm_v4_0_add_queue,
+	.remove_queue = umsch_mm_v4_0_remove_queue,
+	.set_regs = umsch_mm_v4_0_set_regs,
+	.init_microcode = amdgpu_umsch_mm_init_microcode,
+	.load_microcode = umsch_mm_v4_0_load_microcode,
+	.ring_init = amdgpu_umsch_mm_ring_init,
+	.ring_start = umsch_mm_v4_0_ring_start,
+	.ring_stop = umsch_mm_v4_0_ring_stop,
+};
+
+void umsch_mm_v4_0_set_funcs(struct amdgpu_umsch_mm *umsch)
+{
+	umsch->funcs = &umsch_mm_v4_0_funcs;
+}